JPH03224479A - Novel bioactive polypeptide - Google Patents
Novel bioactive polypeptideInfo
- Publication number
- JPH03224479A JPH03224479A JP2019074A JP1907490A JPH03224479A JP H03224479 A JPH03224479 A JP H03224479A JP 2019074 A JP2019074 A JP 2019074A JP 1907490 A JP1907490 A JP 1907490A JP H03224479 A JPH03224479 A JP H03224479A
- Authority
- JP
- Japan
- Prior art keywords
- plasmid
- polypeptide
- amino acid
- novel
- gene
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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Landscapes
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
- Peptides Or Proteins (AREA)
Abstract
Description
【発明の詳細な説明】
(1) 産業上の利用分野
本発明は新規生理活性ポリペプチド、該ポリペプチドを
コードするDNA領域を含む組換えプラスミド、該プラ
スミドによって形質転換された組換え微生物細胞及び該
微生物細胞を用いた新規生理活性ポリペプチドの製造方
法に関する。更に詳しくは、抗腫瘍活性を有する新規ポ
リペプチド(以下、新規抗腫瘍活性ポリペプチドと略す
こともある)、該ポリペプチドをコードするDNA領域
を含む組換えプラスミド、該プラスミドによって形質転
換された組換え微生物細胞及び該微生物細胞を用いた新
規抗腫瘍活性ポリペプチドの製造方法、該新規抗腫瘍活
性ポリペプチドを含有する医薬組成物に関する。Detailed Description of the Invention (1) Industrial Application Field The present invention relates to a novel physiologically active polypeptide, a recombinant plasmid containing a DNA region encoding the polypeptide, a recombinant microbial cell transformed with the plasmid, and a recombinant microbial cell transformed with the plasmid. The present invention relates to a method for producing a novel physiologically active polypeptide using the microbial cells. More specifically, novel polypeptides having antitumor activity (hereinafter sometimes abbreviated as novel antitumor activity polypeptides), recombinant plasmids containing a DNA region encoding the polypeptides, and constructs transformed with the plasmids. The present invention relates to a modified microbial cell, a method for producing a novel antitumor active polypeptide using the microbial cell, and a pharmaceutical composition containing the novel antitumor active polypeptide.
本明りIl書において、アミノ酸、ポリペプチドはIU
PAC−IUB生化学委員会(CBN)で採用された方
法により略記するものとし、たとえば下記の略号を用い
る。In this specification, amino acids and polypeptides are IU
It shall be abbreviated according to the method adopted by the PAC-IUB Committee on Biochemistry (CBN), for example, the following abbreviations are used.
AIaL−アラニン
Arg L−アルギニン
AsnL−アスパラギン
AspL−アスパラギン酸
CVS L−システィン
Gln L−グルタミン
Qlu l−グルタミン酸
Gly グリシン
1−1isl−−ヒスチジン
11eL−イソロイシン
1−eul−ロイシン
LysL−リジン
Met L−メチオニン
Phe L−フェニルアラニン
prol−プロリン
5erl−−セリン
Thr L−スレオニン
TrpL−トリプトファン
Tyr L−チロシン
Val L−バリン
また、DNAの配列はそれを構成する各デオキシリボヌ
クレオチドに含まれる塩基の種類で略記するものとし、
たとえば下記の略号を用いる。AIaL-Alanine Arg L-Arginine AsnL-Asparagine AspL-Aspartic acid CVS L-Cystine Gln L-Glutamine Qlu l-Glutamate Gly Glycine 1-1isl--Histidine 11eL-Isoleucine 1-eul-Leucine LysL-Lysine Met L-Methionine Phe L-phenylalanine prol-proline 5erl--serine Thr L-threonine TrpL-tryptophan Tyr L-tyrosine Val L-valine Furthermore, the sequence of DNA shall be abbreviated by the type of base contained in each deoxyribonucleotide constituting it,
For example, use the following abbreviations.
A アデニン(デオキシアデニル酸を示す。)Cシトシ
ン(デオキシシチジル酸を示す。)G グアニン(デオ
キシグアニル酸を示す。)T チミン (デオキシチミ
ジル酸を示す。)さらに、(H2N)−及び−(COO
H)はそれぞれアミノ酸配列のアミノ末端側及びカルボ
キシ末端側を示すものであり、(5′ )−及び(3′
)はそれぞれDNA配列の5′末端側及び3′末端側
を示すものである。A Adenine (represents deoxyadenylic acid) C Cytosine (represents deoxycytidylic acid) G Guanine (represents deoxyguanylic acid) T Thymine (represents deoxythymidylic acid) Furthermore, (H2N) - and -( COO
H) indicates the amino terminal side and carboxy terminal side of the amino acid sequence, respectively, (5')- and (3'
) indicate the 5' end and 3' end of the DNA sequence, respectively.
(2) 発明の前景
Carswell らは、Bacillus Ca1
llette −Querin (BCG>などで前
もって刺激をうけたマウスにエンドトキシンを投与した
後に採取した血清中に、移植したMethA肉腫による
癌を出血壊死させる物質が含まれていることを見出し、
この物質を腫瘍壊死因子(T umor N ecr
osisl”actor 、以下TNFと略記すること
もある)と名づけだ[E、 A、 Carswellら
、 P roc、Natl。(2) Foreground of the invention Carswell et al.
They discovered that serum collected after administering endotoxin to mice that had been previously stimulated with llette-Querin (BCG) contained a substance that caused hemorrhagic necrosis of transplanted cancer caused by MethA sarcoma.
This substance is called tumor necrosis factor (tumor necrosis factor).
[E, A. Carswell et al., Proc. Natl.
A cad、S ci、、LI S A 、 72.3
666 (1975)コ。このTNFはマウス、ウサギ
、ヒト等多くの動物中に見られ、腫瘍細胞に特異的に、
しかも種を越えで働くことから、制癌剤としての利用が
期待されてきた。A cad, Sci,, LISA, 72.3
666 (1975) Ko. This TNF is found in many animals such as mice, rabbits, and humans, and is specific to tumor cells.
Moreover, since it works across species, it has been expected to be used as an anticancer drug.
最近になッテ、P ennicaらは、ヒトTNFのc
D N Aクローニングを行ない、ヒトTNF蛋白質の
一次構造を明らかにすると共に、大腸菌におけるヒトT
NF遺伝子の発現について報告したFD、 Penn
1Caら、 Nature 、 312. 724
(1984) ] 、その後、自弁ら[T、 5hir
aiら。Recently, Nitte, Pennica et al.
We carried out DNA cloning to clarify the primary structure of human TNF protein and to
FD, Penn, who reported on the expression of the NF gene.
1Ca et al., Nature, 312. 724
(1984)], then Jiben et al.
ai et al.
N ature 、 313. 803 < 198
5)コ、宗村ら[宗村ら、癌と化学療法、 12. 1
60(1985) ] 、Wan(1ら[A、M、Wa
ngら、 5cience、 228. 149(1
985) ]及びM armenoutら[A 、
M armenoutら。Nature, 313. 803 < 198
5) Koh, Munemura et al. [Monemura et al., Cancer and Chemotherapy, 12. 1
60 (1985)], Wan (1 et al. [A, M, Wa
ng et al., 5science, 228. 149 (1
985)] and Marmenout et al. [A,
M armenout et al.
Eur、 J、 Biochen、、 152.
515(1985) ] が、ヒトTNF遺伝
子の大腸菌における発現について相ついで報告している
。Eur, J., Biochen, 152.
515 (1985)] subsequently reported on the expression of the human TNF gene in E. coli.
このように遺伝子操作技術を用いることによって、純粋
なヒトTNF蛋白質が多部に入手できるようになるに及
び、TNFの有する抗腫瘍活性以外の生理活性が明らか
になりつつある。たとえば、癌末期や重症感染症患者に
見られる悪液質を引き起こす原因の一つであるカケクチ
ンがTNFに非常に類似しており[13、3eulte
rら、 NBure 。Through the use of genetic engineering techniques, pure human TNF protein has become available in large quantities, and the physiological activities of TNF other than its antitumor activity are becoming clearer. For example, cachectin, which is one of the causes of cachexia seen in patients with terminal cancer or severe infections, is very similar to TNF [13, 3 eult
r et al., NBure.
316、 552<1985) ] 、カケクチンがリ
ポプロティン・リパーゼ阻害活性を有することから、T
NFの投与により血中のトリグリセリド量が増大し、そ
の結果として高脂血症のような副作用を引き起こす可能
性のあることが示唆された。また、それ以外にも、血管
内皮細胞への影響[J、R。316, 552<1985)], and since cachectin has lipoprotein lipase inhibitory activity, T
It has been suggested that administration of NF increases the amount of triglyceride in the blood, which may result in side effects such as hyperlipidemia. In addition, there are also effects on vascular endothelial cells [J, R.
Qalbleら、J、Exp、Med、162.216
3(1985) ] 、骨吸収作用[D、 R,Be1
toliniら、Nature 、 319. 51
6(1986) 1等が報告されている。Qalble et al., J. Exp. Med, 162.216
3 (1985)], bone resorption effect [D, R, Be1
tolini et al., Nature, 319. 51
6 (1986) 1st prize has been reported.
一方、近年の遺伝子操作技術の進歩は、蛋白質中の任意
のアミノ酸を他のアミノ酸に置換したり、付加したり、
または欠失させることを可能にした。On the other hand, recent advances in genetic engineering technology have enabled the substitution or addition of arbitrary amino acids in proteins with other amino acids,
or allowed to be deleted.
このようにして、天然に存在する蛋白質を改変して、特
定の目的にかなった新しい蛋白質を創製する研究が、数
多く成されている。In this way, many studies have been carried out to create new proteins that serve specific purposes by modifying naturally occurring proteins.
ヒトTNF蛋白質の改変についてもいくつかの研究が成
されており、第1図記載のヒトT N F蛋白質のアミ
ノ酸配列において、Cys#及びCv s /’/のい
ずれか又は両方のアミノ酸残基の他のアミノ酸残基への
置換(PCT出願公開WO36/ 04606号、特願
昭6l−106772) 、G 1y”の他のアミノ酸
残基への置換(特願昭61−106772号、特願昭6
1−238048号) 、 A 1a1Bの他のアミノ
酸残基への置換(特願昭61〜233337号)が報告
されている。また、アミノ末端側のアミノ酸残基の欠失
についても、6アミノ酸欠失TNFが細胞障害活性を有
していること(特開昭61−50923号)、7アミノ
酸欠失TNFが細胞障害活性を有していること(特願昭
6190087号)、1〜10アミノ酸欠失TNFが細
胞障害活性を有しており、その比活性は6〜8アミノ酸
欠失TNFにおいて極大になること(PCT出願公開W
O36/ 02381号)、10アミノ酸欠失TNFが
細胞障害活性を有していること〈特願昭61−1147
54号)、11アミノ酸欠失TNFが細胞障害活性を有
していること(特願昭61−173822号)、及び7
アミノ酸欠失TNFを基盤として、p ro8Ser9
ASp10をA rgL ysA r(lへ置換を行な
うと、その比活性が大きく上昇することが報告されてい
る。Several studies have also been conducted on the modification of human TNF protein, and in the amino acid sequence of human TNF protein shown in Figure 1, either or both of the amino acid residues Cys# and Cv s /'/ have been modified. Substitution of G 1y” with other amino acid residues (PCT Application Publication No. WO 36/04606, Patent Application No. 1983-106772), Substitution of G 1y” with other amino acid residues (Patent Application No. 106772-1981, Patent Application No. 1983)
1-238048) and substitution of A 1a1B with other amino acid residues (Japanese Patent Application Nos. 61-233337). Regarding the deletion of amino acid residues on the amino terminal side, it has been shown that 6-amino acid-deleted TNF has cytotoxic activity (JP-A-61-50923), and that 7-amino acid deleted TNF has cytotoxic activity. (Japanese Patent Application No. 6190087), 1-10 amino acid deletion TNF has cytotoxic activity, and the specific activity is maximum in 6-8 amino acid deletion TNF (PCT application publication W
036/02381) and that 10 amino acid deleted TNF has cytotoxic activity (Patent Application No. 1147-1982).
54), that 11 amino acid deleted TNF has cytotoxic activity (Patent Application No. 173822/1982), and 7.
Based on amino acid deletion TNF, pro8Ser9
It has been reported that substitution of Asp10 with ArgLysA r(l) greatly increases its specific activity.
そこで、本発明者らは比活性の向上、安定性の向上1反
応スペクトルの広域化、副作用の低減化等を目的として
、ヒトTNF蛋白質の改変について鋭意研究を行ない、
本発明を完成するに至った。Therefore, the present inventors have conducted intensive research on modification of human TNF protein with the aim of improving specific activity, improving stability, broadening the reaction spectrum, and reducing side effects.
The present invention has now been completed.
(3)発明の目的
本発明の目的は、新規抗腫瘍活性ポリペプチドを提供す
ることにある。(3) Purpose of the Invention The purpose of the present invention is to provide a novel polypeptide with antitumor activity.
本発明の他の目的は、新規抗腫瘍活性ポリペプチドをコ
ードするDNA領域を含む組換えプラスミドを提供する
ことにある。Another object of the present invention is to provide a recombinant plasmid containing a DNA region encoding a novel antitumor active polypeptide.
本発明の更に他の目的は、上記組換えプラスミドによっ
て形質転換された組換え微生物、その組換え微生物細胞
を用いて新規抗腫瘍活性ポリペプチドを製造する方法、
該新規抗腫瘍性ポリペプチドを含有する医薬組成物を提
供することにある。Still other objects of the present invention are a recombinant microorganism transformed with the above recombinant plasmid, a method for producing a novel antitumor active polypeptide using the recombinant microorganism cells,
An object of the present invention is to provide a pharmaceutical composition containing the novel antitumor polypeptide.
本発明の更に他の目的は、以下の説明から一層明らかと
なるであろう。Still other objects of the present invention will become clearer from the following description.
(4)発明の構成
本発明者らの研究によれば、前記本発明の目的は、次の
アミノ酸配列
(82N ) −Arg−Lys−Arlj cys
−Pro −Val −A la −His −Vat
−Vat −A la −A sn −P ro −
G In −A la −G Iu −G Iy −G
In −L ell −G ln−T rl)−L
eLI−A Sn−A rO−A r+1−A la−
A sn−A la−L eu −L eu−A la
−A sn −G Iy −V al −G lu −
L eu −A ro −A sp −A sn −G
ln−Leu−Val−Val−Pro−8er−Gl
u−Gly−Leu−Tyr−Leu −11e−Ty
r−3er −G In−Val−Leu−Phe−L
ys−G Iy−G In−G IV−Cvs−P r
o−S et−T hr−1−1is−V al−Le
u −Leu−Thr −His −Thr −1le
−Ser −A rg−I le −A la−Vat
−Ser −Tyr−G InThr −Lys−V
at−Asn −Leu −Leu−8er −A l
a −11e −L ys−S er −P ro −
Cys −G InA rQ−G tu−Thr−Pr
o−G Iu−G ly−A 1a−G lu −A
Ia −L ys−P ro −T rp −T yr
−G 1uPro −1le −TVr −Leu −
G Iy −G Iy−Vat −P he −G I
n −L eu −G Iu −L VS −G ly
−A St) −ArQ−Leu−3er−Thr−
Glu−11e−Asn−A rQ−P rO−A S
t)−T Vr−L eLI−A 5l)−P he−
A 1a−G Iu −S er −G ly−G I
n −V al−T yr −Phe −G ly −
11e −11e −Phe −L eu −(COO
H)
で表わされる新規生理活性ポリペプチドまたはそのアミ
ノ末端にMetが結合しているポリペプチド、また上記
新規抗腫瘍活性ポリペプチドをコードするDNA領域を
含む組換えプラスミドを提供することによって達成され
、更にかくして得られた組換えプラスミドによって形質
転換された組換え微生物細胞、その微生物細胞を用いて
目的とする新規抗腫瘍活性ポリペプチドを産生ずる方法
及びこの新規抗腫1m活性ポリペプチドを含有する医薬
組成物を提供することによって達成されることがわかっ
た。(4) Structure of the Invention According to the research conducted by the present inventors, the object of the present invention is to obtain the following amino acid sequence (82N) -Arg-Lys-Arlj cys
-Pro -Val -A la -His -Vat
-Vat -A la -A sn -Pro -
G In -A la -G Iu -G Iy -G
In-Lell-Gln-Trl)-L
eLI-A Sn-A rO-A r+1-A la-
A sn-A la-L eu-L eu-A la
-A sn -G Iy -V al -G lu -
L eu -A ro -A sp -A sn -G
ln-Leu-Val-Val-Pro-8er-Gl
u-Gly-Leu-Tyr-Leu -11e-Ty
r-3er-G In-Val-Leu-Phe-L
ys-G Iy-G In-G IV-Cvs-P r
o-S et-T hr-1-1is-V al-Le
u -Leu-Thr -His -Thr -1le
-Ser -A rg-I le -A la-Vat
-Ser -Tyr-G InThr -Lys-V
at-Asn-Leu-Leu-8er-A l
a-11e-Lys-Ser-Pro-
Cys -G InA rQ-G tu-Thr-Pr
o-G Iu-G ly-A 1a-G lu -A
Ia-Lys-Pro-Trp-Tyr
-G 1uPro -1le -TVr -Leu -
G Iy -G Iy-Vat -P he -G I
n -L eu -G Iu -L VS -G ly
-A St) -ArQ-Leu-3er-Thr-
Glu-11e-Asn-A rQ-P rO-A S
t)-T Vr-L eLI-A 5l)-P he-
A1a-GIu-Ser-Gly-GI
n -V al-T yr -Phe -G ly -
11e -11e -Phe -L eu -(COO
H) by providing a recombinant plasmid containing a novel physiologically active polypeptide represented by or a polypeptide having Met bound to its amino terminus, and a DNA region encoding the novel antitumor active polypeptide, Furthermore, recombinant microbial cells transformed with the thus obtained recombinant plasmid, a method for producing the desired novel antitumor active polypeptide using the microbial cell, and a medicament containing this novel antitumor 1m active polypeptide. It has been found that this can be achieved by providing a composition.
以下本発明について更に詳細に説明する。The present invention will be explained in more detail below.
(A)ヒトTNF遺伝子のクローン化:ヒトTNF遺伝
子は、ヒトTNF蛋白質を構成するアミノ酸[D、 P
enn1caら、前出〕を指定するいくつかのコドンの
中から適当なものを選び、それを化学合成することによ
って取得できる。ヒトTNF遺伝子の設計に際しては、
用いる宿主細胞に最も適したコドンを選択することが望
ましく、後にクローン化及び遺伝子改変を容易に行なえ
るように適当な位置に適当な制限酵素による切断部位を
設けることが望ましい。(A) Cloning of the human TNF gene: The human TNF gene consists of amino acids [D, P
It can be obtained by selecting an appropriate codon from among several codons specifying [enn1ca et al., supra] and chemically synthesizing it. When designing the human TNF gene,
It is desirable to select the most suitable codon for the host cell to be used, and it is desirable to provide a cleavage site with an appropriate restriction enzyme at an appropriate position to facilitate subsequent cloning and genetic modification.
また、ヒトTNF蛋白質をコードするDNA領域は、そ
の上流に読みとりフレームを一致させた形での翻訳開始
コドン(ATG)を有することが好ましく、その下流方
向に読みとりフレームを一致させた形での翻訳終止コド
ン(TGA。Furthermore, the DNA region encoding the human TNF protein preferably has a translation initiation codon (ATG) with matching reading frames upstream thereof, and a translation initiation codon (ATG) with matching reading frames in the downstream direction. Stop codon (TGA).
TAGまたはTAA)を有することが好ましい上記翻訳
終止コドンは、発現効率の向上を目的として、2つ以上
タンデムに連結することがとりわけ好ましい。さらに、
このヒトTNF遺伝子は、その上流及び下流に作用する
制限酵素の切断部位を用いることにより、適当なベクタ
ーへのクローン化が可能になる。このようなヒトTNF
遺伝子の塩基配列の例を、第1図に示した。It is especially preferable that two or more of the above-mentioned translation stop codons, which preferably have TAG or TAA), are linked in tandem for the purpose of improving expression efficiency. moreover,
This human TNF gene can be cloned into an appropriate vector by using the cleavage sites of restriction enzymes that act upstream and downstream thereof. Such human TNF
An example of a gene base sequence is shown in FIG.
上記のように設計したヒトTNF遺伝子の取得は、上側
の鎖、下側の鎖のそれぞれについてたとえば第2図に示
したような何本かのオリゴヌクレオチドに分けて、それ
らを化学合成し、各々のオリゴヌクレオチドを連結する
方法をとるのが望ましい。各オリゴヌクレオチドの合成
法としてはジエステル法[H,G、 Khorana。To obtain the human TNF gene designed as described above, each of the upper and lower strands is divided into several oligonucleotides as shown in Figure 2, and these are chemically synthesized. It is preferable to use a method in which oligonucleotides of two types are linked. The synthesis method for each oligonucleotide is the diester method [H, G, Khorana.
“Some Recent Developmen
ts inChelllistrV of P
host)hate E 5terS ofB i
ological I ntereSt ” 、
J ohn W 1leyand 5ons 、
Inc、、New York (1961) ]
。“Some Recent Developments
ts in ChellistrV of P
host)hate E 5terS of B i
Logical IntereSt”,
John W 1leyand 5ons,
Inc., New York (1961)]
.
トリエステル法[R,L、 Letsingerら、J
。Triester method [R,L, Letsinger et al., J
.
Am、 Chew、 Soc、、89.4801(
1967) ]及びホスファイト法[M、 D、 Ma
tteucciら。Am, Chew, Soc,, 89.4801 (
1967)] and the phosphite method [M, D, Ma
tteucci et al.
Tetrahedron L ett、、 21.
719(1980) ]があるが、合成時間、収率、操
作の簡便さ等の点から、全自動DNA合成機を用いたホ
スファイト法による合成が好ましい。合成したオリゴヌ
クレオチドの精製は、ゲル濾過、イオン交換クロマトグ
ラフィー、ゲル電気泳動、逆相カラムによる高速液体ク
ロマトグラフィー等を、適宜単独もしくは組合せて用い
ることができる。Tetrahedron Lett, 21.
719 (1980)], but synthesis by the phosphite method using a fully automatic DNA synthesizer is preferred from the viewpoints of synthesis time, yield, simplicity of operation, etc. To purify the synthesized oligonucleotide, gel filtration, ion-exchange chromatography, gel electrophoresis, high-performance liquid chromatography using a reversed phase column, etc. can be used individually or in combination as appropriate.
こうして得られた合成オリゴヌクレオチドの5′末端側
の水酸基を、たとえばT4−ポリヌクレオチドキナーゼ
を用いてリン酸化した優、アニーリングさせ、たとえば
T4−DNAリガーゼを用いて連結する。合成オリゴヌ
クレオチドを連結してヒトTNF遺伝子を作成する方法
としては、合成オリゴヌクレオチドをいくつかのブロッ
クに分けて連結し、たとえばpBR322[F 、
B olivarら、 Gene 、 2. 95
(1977) ]のようなベクターに一度クローン化し
た後、それらの各ブロックのDNA断片を連結する方法
が好ましい。このようなヒトTNF遺伝子を構成するブ
ロックのDNA断片を含むプラスミドとして、好ましく
はpTNFIBR。The hydroxyl group at the 5' end of the synthetic oligonucleotide thus obtained is phosphorylated using, for example, T4-polynucleotide kinase, annealed, and ligated using, for example, T4-DNA ligase. A method for constructing the human TNF gene by ligating synthetic oligonucleotides involves dividing the synthetic oligonucleotides into several blocks and ligating them, for example, pBR322[F,
Bolivar et al., Gene, 2. 95
(1977)] and then ligating the DNA fragments of each block is preferred. A plasmid containing a DNA fragment of a block constituting the human TNF gene is preferably pTNFIBR.
pTNF2NまたはDTNF3が用いられる。pTNF2N or DTNF3 is used.
上記のようにしてクローン化したヒトTNF遺伝子を構
成する各ブロックのDNA断片を連結した後、適当なプ
ロモーター、SO<シャイン・ダルガーノ)配列の下流
につなぐことにより、発現型遺伝子とすることができる
。使用可能なプロモーターとして、トリプトファン・オ
ペロン・プロモーター(trpプロモーター)。After ligating the DNA fragments of each block constituting the human TNF gene cloned as described above, an expressed gene can be obtained by ligating the DNA fragments downstream of an appropriate promoter and SO<Shine-Dalgarno) sequence. . A usable promoter is the tryptophan operon promoter (trp promoter).
ラクトース・オペロン・プロモーター(Iacプロモー
ター) 、 tacプロモーター、P−プロモーター、
+ppプロモーター等があげられるが、とりわけtr
pプロモーターが好適である。trpプロモーターを有
するプラスミドとして、好ましくは1)YS31N、又
はl)A A 41が用いられる。Lactose operon promoter (Iac promoter), tac promoter, P-promoter,
+pp promoter etc., but especially tr
The p promoter is preferred. As a plasmid having a trp promoter, 1) YS31N or 1) AA41 is preferably used.
さらに、発現効率向上を目的として、ヒトTNF遺伝子
下流に大腸菌で効率良く機能するターミネータ−を付与
することができる。このようなターミネータ−として、
1ppターミネータ−trpターミネータ−等があげら
れるが、とりわけtrp Aターミネータ−が好適であ
り、trp Aターミネータ−を有するプラスミドとし
て、好ましくはpA A 41が用いられる。この発現
型ヒトTNF遺伝子を、たとえばpBR322由来のベ
クターにクローン化することにより、発現型プラスミド
が作成できる。ヒトTNF遺伝子発現型プラスミドとし
て、好ましくはDTNF401NN又はDTNF 40
1Aが用いられる。Furthermore, for the purpose of improving expression efficiency, a terminator that functions efficiently in E. coli can be added downstream of the human TNF gene. As such a terminator,
Examples include 1pp terminator, trp terminator, etc., but trp A terminator is particularly suitable, and pA A 41 is preferably used as the plasmid having trp A terminator. By cloning this expressed human TNF gene into a pBR322-derived vector, for example, an expression plasmid can be created. As a human TNF gene expression plasmid, preferably DTNF401NN or DTNF40
1A is used.
(B)新規抗腫瘍活性ポリペプチド遺伝子のクローン化
:
こうして得られたヒトTNF遺伝子発現型プラスミドを
適当な制限酵素で切断し、ヒトTNF31仏子内の特定
な領域を除去した後、適当な塩基配列を有する合成オリ
ゴヌクレオチドを用いた遺伝子の修復を行なう。かかる
手法を用いることにより、ヒトTNF蛋白質中の任意の
アミノ酸を他のアミノ酸に置換したり、付加したり、ま
たは欠失させた形の新規抗腫瘍活性ポリペプチドをコー
ドする遺伝子を含む発現型プラスミドの作成が可能にな
る。このような新規抗腫瘍活性ポリペプチド遺伝子発現
型プラスミドとして、好ましくはI)TNF668が用
いられる。(B) Cloning of a novel antitumor active polypeptide gene: The human TNF gene expression plasmid thus obtained is cut with an appropriate restriction enzyme to remove a specific region within the human TNF31 gene, and then an appropriate base sequence is extracted. We perform gene repair using synthetic oligonucleotides with By using such a method, an expression plasmid containing a gene encoding a novel anti-tumor active polypeptide in which any amino acid in the human TNF protein is replaced with another amino acid, added, or deleted is obtained. It becomes possible to create I) TNF668 is preferably used as such a novel antitumor active polypeptide gene expression plasmid.
(C)発現確認及び活性評価;
ヒトTNF遺伝子及び新規抗腫瘍活性ポリペプチド遺伝
子を発現させるための微生物宿主としては、大腸菌、枯
草菌、酵母等があげられるが、とりわけ大腸菌[エシェ
リヒア・コリ(Escherichia coli)
]が好ましい。前記ヒトTNF遺伝子発現型プラスミ
ド及び新規抗腫瘍活性ポリペプチド遺伝子発現型プラス
ミドは、たとえば公知の方法[M、 V、 Norga
rdら。(C) Expression confirmation and activity evaluation; Examples of microbial hosts for expressing the human TNF gene and the novel antitumor active polypeptide gene include Escherichia coli, Bacillus subtilis, and yeast, but especially Escherichia coli [Escherichia coli] coli)
] is preferred. The human TNF gene expression plasmid and the novel antitumor active polypeptide gene expression plasmid can be obtained by, for example, known methods [M, V, Norga et al.
rd et al.
Gene 、 3. 279<1978) ]を用イテ
、微生物宿主、たとえばエシェリヒア・コリC600r
−s−株(ATCC33525)に導入することができ
る。Gene, 3. 279<1978)], microbial hosts, such as Escherichia coli C600r.
-s- strain (ATCC33525).
このようにして得られた組換え微生物細胞を、それ自体
は公知の方法で培養する。培地としては、たとえばグル
コースとカザミノ酸を含むM9培地[T、 Mania
tisら編、” M olecularCloning
” 、 P 440. Co1d SpringHa
rbor LaboratorV 、 New Y
ork (1982)参照]があげられ、必要に応じ
て、たとえばアンピシリン等を添加するのが望ましい。The recombinant microbial cells thus obtained are cultured in a manner known per se. As a medium, for example, M9 medium containing glucose and casamino acids [T, Mania
tis et al., eds., “Molecular Cloning”
”, P 440. Co1d SpringHa
rbor Laborator V, New Y
(1982)], and it is desirable to add, for example, ampicillin, if necessary.
培養は目的の組換え微生物に適した条件、たとえば振と
うによる通気、撹拌を加えながら、37℃で2〜3Gv
g間行なう。また、培養開始時または培養中に、プロモ
ーターを効率良く機能させる目的で、3−β−インドー
ルアクリル酸等の薬剤を加えることもできる。Cultivation is carried out under conditions suitable for the target recombinant microorganism, such as aeration by shaking and stirring at 37°C at 2 to 3 Gv.
Do this for g. Furthermore, a drug such as 3-β-indole acrylic acid can be added at the start of culture or during culture in order to make the promoter function efficiently.
培養後、たとえば遠心分離により組換え微生物細胞を集
め、たとえばリン酸バッファーに懸濁させ、たとえば超
音波処理により組換え微生物細胞を破砕し、遠心分離に
より組換え微生物細胞のライゼートを得る。得られたラ
イゼート中の蛋白質を、ラウリル硫酸ナトリウム(以下
、SO8と略すこともある)を含むポリアクリルアミド
ゲルを用いた電気泳動によって分離し、ゲル中の蛋白質
を適当な方法を用いて染色する。After culturing, the recombinant microbial cells are collected by, for example, centrifugation, suspended in, for example, a phosphate buffer, the recombinant microbial cells are disrupted by, for example, sonication, and a lysate of the recombinant microbial cells is obtained by centrifugation. Proteins in the obtained lysate are separated by electrophoresis using a polyacrylamide gel containing sodium lauryl sulfate (hereinafter sometimes abbreviated as SO8), and the proteins in the gel are stained using an appropriate method.
発現型プラスミドを含まない微生物細胞のライゼートを
対照として泳動パターンを比較することにより、ヒトT
NF遺伝子または新規抗腫瘍活性ポリペプチド遺伝子の
発現を確認する。Human T
Confirm the expression of the NF gene or the novel antitumor active polypeptide gene.
このようにして得られたヒトTNF蛋白質及び新規抗腫
瘍活性ポリペプチドの抗癌活性の評価は、マウスに移植
したMethA肉腫を壊死させる効果を見るin v
ivo活性測定法(Carswe l lら、前出)、
マウスL細胞に対する細胞障害性を見るin Vit
rO活性測定法[Ruff 、 J、 Ia+mun
ol、、 126. 235(1981) ]等により
行なえる。The anticancer activity of the human TNF protein and the novel antitumor active polypeptide thus obtained was evaluated by in v
ivo activity assay (Carsweil et al., supra),
In Vit to see cytotoxicity to mouse L cells
rO activity measurement method [Ruff, J, Ia+mun
ol,, 126. 235 (1981)], etc.
ヒトTNF蛋白質及び新規抗腫瘍活性ポリペプチドの大
腸菌ライゼートからの分離・精製は、公知の通常知られ
ている蛋白質の分離・精製法に従えばよいが、ヒトTN
F蛋白質等に対する抗体を用いたアフィニティー・カラ
ム・りaマドグラフィーが有利である。なかでも、ヒト
TNF蛋白質等に対するマウス・モノクローナル抗体を
用いたアフィニティー・カラム・クロマトグラフィーが
とりわけ好適である。こうして得られたヒトTNF蛋白
質及び新規抗腫瘍活性ポリペプチド精製品を用いること
により、in vivo抗癌活性(#i出)及び副作用
に関する検討が可能となる。The human TNF protein and the novel anti-tumor active polypeptide can be isolated and purified from E. coli lysate according to known and commonly known protein separation and purification methods.
Affinity column chromatography using antibodies against F protein and the like is advantageous. Among these, affinity column chromatography using a mouse monoclonal antibody against human TNF protein or the like is particularly suitable. By using the purified human TNF protein and the novel antitumor active polypeptide thus obtained, it becomes possible to study the in vivo anticancer activity (output #i) and side effects.
ヒトTNF蛋白質及び新規抗腫瘍活性ポリペプチドの副
作用の評価は、カケクチン活性測定に代表されるin
vitro法、マウス等の実験動物に投与してその致死
量や面圧の降下程度等を測定するin vivo法等に
より行なうことができる。Evaluation of side effects of human TNF protein and novel anti-tumor active polypeptides is carried out using in-house methods such as measurement of cachectin activity.
This can be carried out by an in vitro method or an in vivo method in which the lethal dose, degree of reduction in surface pressure, etc. are measured by administering to experimental animals such as mice.
(5)発明の効果
かくして本発明によれば、従来公知のヒトTNF蛋白質
とは異なる新規生理活性ポリペプチドを得ることが可能
になり、この新規抗腫瘍活性ポリペプチドを用いること
によって抗腫瘍のためのすぐれた医薬組成物を提供する
ことが可能になった。(5) Effects of the invention Thus, according to the present invention, it is possible to obtain a novel physiologically active polypeptide that is different from the conventionally known human TNF protein, and by using this novel antitumor active polypeptide, It has now become possible to provide an excellent pharmaceutical composition.
(6)実施例
以下、実施例を掲げて本発明について詳細に説明するが
、本発明は以下の実施例に限定されるものではない。(6) Examples Hereinafter, the present invention will be explained in detail with reference to Examples, but the present invention is not limited to the following Examples.
実施例1(ヒトTNF遺伝子の設計)
第1図に示した塩基配列のヒトTNF遺伝子を設計した
。設計に際しては、P ennicaら[D。Example 1 (Design of human TNF gene) A human TNF gene having the base sequence shown in FIG. 1 was designed. For the design, Pennica et al. [D.
Penn1caら、 Nature 、 ユ12.
724 (1984) コの報告したヒトTNF前駆
体CD N Aの構造遺伝子部分の塩基配列を基盤とし
て、適当な、ill限酵素による切断部位を適当な位置
に設け、5′側に翻訳開始コドン(ATG)を、そして
3′側に2個の翻訳終止コドン(TGA及びTAA)を
それぞれ付与した。また、5′側翻訳開始コドン上流に
は制限酵素CfaIによる切断部位を設け、SD配列と
翻訳開始コドン間を適切な状態に保った形でのプロモー
ターとの連結を可能にした。更に、3′側翻訳終止コド
ン下流には制限酵素HindI[[による切断部位を設
け、ベクター・プラスミドと容易に連結できるようにし
た。Penn1ca et al., Nature, Yu12.
724 (1984) Based on the nucleotide sequence of the structural gene portion of the human TNF precursor CD N A reported by Ko, a suitable cleavage site by an ill restriction enzyme was set at an appropriate position, and a translation initiation codon ( ATG) and two translation stop codons (TGA and TAA) on the 3' side. Furthermore, a cleavage site using the restriction enzyme CfaI was provided upstream of the 5' translation initiation codon, allowing for ligation to the promoter while maintaining an appropriate state between the SD sequence and the translation initiation codon. Furthermore, a cleavage site with the restriction enzyme HindI was provided downstream of the 3' translation stop codon to facilitate ligation with a vector/plasmid.
実施例2(オリゴヌクレオチドの化学合成)実施例1で
設計したヒトTNF遺伝子は、第2図に示したように1
7本のオリゴヌクレオチドに分けて合成する。オリゴヌ
クレオチドの合成は全自動DNA合成機(アプライド・
バイオシステムズ。Example 2 (Chemical synthesis of oligonucleotide) The human TNF gene designed in Example 1 was
Synthesize it in seven oligonucleotides. Oligonucleotide synthesis was performed using a fully automatic DNA synthesizer (Applied).
Biosystems.
モデル380A >を用いて、ホスファイト法により行
なった。合成オリゴヌクレオチドの精製は、アプライド
・バイオシステムズ社のマニュアルに準じて行なった。The test was carried out by the phosphite method using Model 380A. Purification of the synthetic oligonucleotide was performed according to the manual of Applied Biosystems.
すなわち、合成オリゴヌクレオチドを含むアンモニア水
溶液を55℃で一晩保つことにより、DNA塩基の保護
基をはずし、セファデックスG−50フアイン・ゲル(
ファルマシア)を用いたゲル濾過によって、高分子量の
合成オリゴヌクレオチド画分を分取する。ついで、7M
[iR素を含むポリアクリルアミドゲル電気泳動くゲル
濃度20%)の後、紫外線シャドウィング法により泳動
パターンの観察を行なう。目的とする大きさのバンド部
分を切出して、そのポリアクリルアミドゲル断片を細か
く破砕した後、2〜5−の溶出用バッファー[500m
M NH40AC−111MEDTA−0,1%SD
S (1)H7,5> ]を加え、37℃で一晩撮とう
した。遠心分離により、目的のDNAを含む水相の回収
を行なった。最後に合成オリゴヌクレオチドを含む溶液
をゲル濾過カラム(セファデックス(3−50)にかけ
ることにより、合成オリゴヌクレオチドの精製品を得た
。なお、必要に応じて、ポリアクリルアミドゲル電気泳
動を繰り返し、合成オリゴヌクレオチドの純度の向上を
はかった。That is, by keeping an ammonia aqueous solution containing synthetic oligonucleotides at 55°C overnight, the protecting groups of the DNA bases are removed, and the DNA bases are removed from the ammonia solution containing Sephadex G-50 Fine Gel (
A high-molecular-weight synthetic oligonucleotide fraction is collected by gel filtration using a high-molecular-weight synthetic oligonucleotide (Pharmacia). Next, 7M
After [polyacrylamide gel electrophoresis containing iR element at a gel concentration of 20%], the migration pattern is observed by ultraviolet shadowing method. After cutting out a band of the desired size and crushing the polyacrylamide gel fragments finely, add 2-5-elution buffer [500 m
M NH40AC-111MEDTA-0,1%SD
S(1)H7,5>] was added and photographed overnight at 37°C. The aqueous phase containing the target DNA was recovered by centrifugation. Finally, a purified product of the synthetic oligonucleotide was obtained by applying the solution containing the synthetic oligonucleotide to a gel filtration column (Sephadex (3-50). If necessary, polyacrylamide gel electrophoresis was repeated. We aimed to improve the purity of synthetic oligonucleotides.
実施例3(化学合成ヒトTNF遺伝子のクローン化)
実施例2で作成した17本の合成オリゴヌクレオチド(
TNF−1〜TNF−17)を用いて、ヒトTNF遺伝
子を3つのブロックに分けてクローン化した。Example 3 (Cloning of chemically synthesized human TNF gene) The 17 synthetic oligonucleotides prepared in Example 2 (
The human TNF gene was divided into three blocks and cloned using TNF-1 to TNF-17).
0.1〜1.0μ9の合成オリゴヌクレオチドTNF−
2〜TNF−6の5′末端側を、5〜15ユニツトのT
4−ポリヌクレオチドキナーゼ(E。0.1-1.0 μ9 synthetic oligonucleotide TNF-
2 to 5' to 15 units of T on the 5' end of TNF-6.
4-polynucleotide kinase (E.
coli3タイプ、宝酒造)を用いて、それぞれ別々に
リン酸化する。リン酸化反応は10〜20μ旦の50m
MTr1s−H(J (1)H9,5) 、 101M
MIJ Cjz 。E. coli type 3, Takara Shuzo) to phosphorylate each separately. Phosphorylation reaction takes place at 50 m for 10-20 μm.
MTr1s-H(J(1)H9,5), 101M
MIJ Cjz.
5 mMジチオスレイトール、10mM ATP水
溶液中で、37℃で、30分間行なった。反応終了後、
すべての合成オリゴヌクレオチド水溶液をすべて混合し
、フェノール抽出、エーテル抽出によりT4−ポリヌク
レオチドキナーゼを失活、除去する。The test was carried out in an aqueous solution of 5 mM dithiothreitol and 10 mM ATP at 37° C. for 30 minutes. After the reaction is complete,
All synthetic oligonucleotide aqueous solutions are mixed together, and T4-polynucleotide kinase is inactivated and removed by phenol extraction and ether extraction.
この合成オリゴヌクレオチド混合液に、新たに0.1〜
1.0μ9の合成オリゴヌクレオチドTNF1及びTN
F−7を加え、90℃で5分間加熱したI’J温まで徐
冷して、アニーリングを行なう。To this synthetic oligonucleotide mixture, add 0.1~
1.0μ9 synthetic oligonucleotides TNF1 and TN
Annealing is performed by adding F-7 and heating at 90° C. for 5 minutes, then slowly cooling to I'J temperature.
次に、これを減圧乾固した後に、30μ文の66 mM
Tris−HCf (pH7,6> 、 6.
6 1M MCl C12。Next, after drying this under reduced pressure, 30μ of 66mM
Tris-HCf (pH 7,6>, 6.
6 1M MCl C12.
101Mジチオスレイトール、1mMATP水溶液に溶
解させ、300ユニツトのT4−DNAリガーゼ(宝酒
造)を加えて、11℃で15時間連結反応を行なった。It was dissolved in 101M dithiothreitol and 1mM ATP aqueous solution, 300 units of T4-DNA ligase (Takara Shuzo) was added, and a ligation reaction was carried out at 11°C for 15 hours.
反応終了後、ポリアクリルアミドゲル電気泳動くゲル濃
度5%)を行ない、エチジウムブロマイド染色法により
泳動パターンの観察を行なう。目的とする大きさく約2
20bp )のバンド部分を切出して、実施例2の方法
に従ってポリアクリルアミドゲルよりDNAを回収する
。After the reaction is completed, polyacrylamide gel electrophoresis (gel concentration 5%) is performed, and the migration pattern is observed by ethidium bromide staining. The desired size is about 2
A band portion of 20 bp) is cut out, and the DNA is recovered from the polyacrylamide gel according to the method of Example 2.
一方、3μ9の大腸菌用プラスミドDBR322(約4
,4K bp)を30μ文の10 mM T r+s
−HCR(pH7,5) 、 60 iM Na C
L 71MMgCfz水溶液に溶解させ、10ユニツト
の制限酵素C1aI<ニューイングランド・バイオラブ
ズ)を添加して、37℃で1時間切断反応を行なった。On the other hand, 3 μ9 E. coli plasmid DBR322 (approximately 4
, 4K bp) in 30 μg of 10 mM T r+s
-HCR (pH 7,5), 60 iM NaC
The residue was dissolved in an aqueous L71MMgCfz solution, 10 units of restriction enzyme C1aI (New England Biolabs) was added, and a cleavage reaction was carried out at 37°C for 1 hour.
制限酵素(JaIによる切断の後、フェノール抽出。After cleavage with restriction enzyme (JaI), phenol extraction.
エーテル抽出を行ない、エタノール沈澱によりDNAを
回収する。このDNAを30μ磨の50 mMTris
−H(J (pH7,4) 、 100 a+M
Na C1,101M M(lsO+水溶液に溶解さ
せ、10ユニツトの制限酵素5alI(宝酒造)を添加
して、37℃で1時間切断反応を行なった。反応終了後
、アガロースゲル電気泳動(ゲル濃度0.8%)を行な
い、エチジウムブロマイド染色法により切断パターンの
観察を行なう。プラスミドpBR322の大部分を含む
約3.7KbpのDNAの部分に相当するバンドを切出
し、そのアガロースゲル断片を3倍量(vol /wt
)のaM NaCf0+水溶液に溶解させた。Che
nらのグラスフィルター法[C,W。Ether extraction is performed and DNA is recovered by ethanol precipitation. This DNA was washed 30μ with 50mM Tris.
-H(J (pH7,4), 100 a+M
NaCl was dissolved in 1,101M M (lsO) + aqueous solution, 10 units of restriction enzyme 5alI (Takara Shuzo) was added, and the cleavage reaction was carried out at 37°C for 1 hour. After the reaction was completed, agarose gel electrophoresis (gel concentration 0. 8%) and observe the cleavage pattern using ethidium bromide staining.The band corresponding to the approximately 3.7 Kbp DNA portion containing most of the plasmid pBR322 is cut out, and the agarose gel fragment is divided into three volumes (vol. /wt
) was dissolved in an aM NaCf0+ aqueous solution. Che
The glass filter method of n et al. [C, W.
Chenら、 Anal 、 8iochem、 1
01. 339<1980) ]により、約3.7K
boのDNA断片(CfaI→5alI>をアガロース
ゲルより回収した。Chen et al., Anal, 8iochem, 1
01. 339<1980) ], approximately 3.7K
A DNA fragment of bo (CfaI→5alI>) was recovered from the agarose gel.
先に得られたヒトTNF遺伝子の一部を含む約220b
pのDNA断片について、前記の方法に準じて末端のリ
ン酸化反応を行なった後、プラスミドpBR322の大
部分を含む約3,7K bpのD N A水溶液と混合
する。エタノール沈澱の後、前記の方法に準じて両DN
A断片の連結反応を行なった。Approximately 220b containing part of the previously obtained human TNF gene
The DNA fragment of p is subjected to a terminal phosphorylation reaction according to the method described above, and then mixed with an aqueous DNA solution of approximately 3.7 Kbp containing most of plasmid pBR322. After ethanol precipitation, both DNs were prepared according to the method described above.
A ligation reaction of the A fragment was performed.
エシェリヒア・コリC600r−1株の形質転換は、通
常のCaCIz法(M、 V、 Norgardらの方
法)の改良法で行なった。すなわち、5Idlのし培地
(1%トリプトン、0.5%酵母エキス、0.5%Na
C夕、 E)H7,2)にエシェリヒア−mlすC6
00r1−株の18時間培養基を接種し、菌体を含む培
養液の600nmにおける濁度(ODtpty>が0.
3に達するまで生育させる。菌体を冷たいマグネシウム
・バッフy−[0,IM Na C1,51M M
gCjz 。Transformation of the Escherichia coli C600r-1 strain was carried out by a modification of the conventional CaCIz method (method of M. V. Norgard et al.). That is, 5Idl medium (1% tryptone, 0.5% yeast extract, 0.5% Na
C evening, E) H7, 2) Escherichia-ml C6
An 18-hour culture medium of 00r1- strain was inoculated, and the turbidity (ODtpty> at 600 nm of the culture solution containing bacterial cells was 0.
Grow until it reaches 3. The bacterial cells were soaked in cold magnesium buffer y-[0,IM Na C1,51M M
gCjz.
5 mM Tris−HCj (pH7,6,0℃)
]中で2回洗い、2Idlの冷したカルシウム・バッフ
ァー[1001MCa C12,250IBM KC
f、 5 nMMQ C1z 、 51M Tris
−HCf (pt−+ 7.6゜0℃)]中に再懸濁さ
せ、0℃で25分間放置する。5 mM Tris-HCj (pH 7, 6, 0°C)
] in 2 Idl of cold calcium buffer [1001 MCa C12, 250 IBM KC
f, 5 nMMQ C1z, 51M Tris
-HCf (pt-+ 7.6° 0°C)] and left at 0°C for 25 minutes.
次に菌体をこの容量の1/10にカルシウム・バッファ
ーの中で濃縮し、連結後のDNA水溶液と2=1 (V
Ol、: vol、)混合する。この混合物を60分間
。Next, the bacterial cells were concentrated in a calcium buffer to 1/10 of this volume, and the DNA aqueous solution after ligation and 2=1 (V
Ol,: vol,) mix. Stir this mixture for 60 minutes.
0℃で保った後、1dのLBG培地(1%トリプトン、
0.5%酵母エキス、1%NaC1,0,08%グルコ
ース、 ph 7.2)を添加し、37℃で1時間振
とう培養する。培養液を、選択培地[アンピシリン(シ
グマ) 30Mg/−を含むし培地プレート]に100
μρ/プレートの割合で接種する。プレートを37℃で
1晩培養して、形質転換株を生育させる。得られたアン
ピシリン耐性のコロニーより、公知の方法を用いてDN
Aを調製し、アガロースゲル電気泳動により、目的のプ
ラスミドpTNFIBR(約4.0K bp)の取得を
確認した。第3図に、プラスミドpTNF1BRの作成
方法を示す。After keeping at 0°C, 1 d of LBG medium (1% tryptone,
Add 0.5% yeast extract, 1% NaCl, 0.08% glucose, pH 7.2), and culture with shaking at 37°C for 1 hour. The culture solution was transferred to a selective medium [medium plate containing 30 Mg/- of ampicillin (Sigma)] at 100%
Inoculate at a ratio of μρ/plate. The plates are incubated overnight at 37°C to grow the transformants. From the obtained ampicillin-resistant colonies, DN was isolated using a known method.
A was prepared, and acquisition of the target plasmid pTNFIBR (approximately 4.0 K bp) was confirmed by agarose gel electrophoresis. FIG. 3 shows the method for constructing plasmid pTNF1BR.
以上と同様な手法により、合成オリゴヌクレオチドTN
F−8〜TNF−13を用いてプラスミドpTNF2N
(約3.IKbl))を、合成オリゴヌクレオチドTN
F−14〜TNF−17を用いてプラスミドpTNF3
(約2.4K log)を、それぞれ作成した。第4図
及び第5図に、プラスミドpTNF2N及びpTNF3
の作成方法を、それぞれ示す。By the same method as above, synthetic oligonucleotide TN
Plasmid pTNF2N using F-8 to TNF-13
(approximately 3.IKbl)), the synthetic oligonucleotide TN
Plasmid pTNF3 using F-14 to TNF-17
(approximately 2.4K log) were created, respectively. Figures 4 and 5 show plasmids pTNF2N and pTNF3.
We will show how to create each.
こうして得られたヒトTNF遺伝子の一部を含むプラス
ミドpTNF1BR,pRNF2N及びpT N F
3の、合成オリゴヌクレオチド使用部分の塩基配列が設
計通りであることは、マキサム・ギルバート法[A、
M、 Maxai+ら、 MethOdSEnzymo
l、、65. 499(1980) ]によって確認し
た。Plasmids pTNF1BR, pRNF2N and pTNF containing part of the human TNF gene thus obtained
3, the base sequence of the synthetic oligonucleotide used part was as designed, using the Maxam-Gilbert method [A,
M, Maxai+ et al., MethOdSEnzymo
l,,65. 499 (1980)].
実施例4(ヒトTNF遺伝子発現型プラスミドの作成)
実施例3で得られたプラスミドpTNFIBR10μ9
を、実施例3と同様にして制限酵素CjaI及び5al
Iで切断し、ポリアクリルアミドゲル電気泳動(ゲル濃
度5%)の後、実施例2の方法に準じて、ヒトTNF遺
伝子の一部を含む約220bl)のDNA断片<C1a
I”5alI )をポリアクIJ ルアミドゲルより
回収した。Example 4 (Creation of human TNF gene expression plasmid) Plasmid pTNFIBR10μ9 obtained in Example 3
was added to the restriction enzymes CjaI and 5al in the same manner as in Example 3.
After cutting with I and polyacrylamide gel electrophoresis (gel concentration 5%), a DNA fragment of about 220 bl containing part of the human TNF gene <C1a> was obtained according to the method of Example 2.
I''5alI) was recovered from polyacrylamide gel.
次に、実施例3で得られたプラスミドE)TNF2 1
0u9を100μNの1001M T ris−HC
I(f)H7,5> 、 60 mM Na C1,
7g+MMgCI2水溶液に溶解させ、40ユニツトの
制限酵素PVul(宝酒造)を添加し、37℃で1時間
切断反応を行なった。そして、実施例3の方法に準じて
制限酵素5alIによる切断、ポリアクリルアミドゲル
電気泳動(ゲル濃度5%)の後、実施例2の方法に準じ
て、ヒトTNF遺伝子の一部を含む約170bpのDN
A断片<5alI+PvuII)をポリアクリルアミド
ゲルより回収した。Next, plasmid E) TNF2 1 obtained in Example 3
0u9 to 100μN of 1001M Tris-HC
I(f)H7,5>, 60 mM Na C1,
It was dissolved in 7g+MMgCI2 aqueous solution, 40 units of restriction enzyme PVul (Takara Shuzo) was added, and a cleavage reaction was carried out at 37°C for 1 hour. After digestion with the restriction enzyme 5alI and polyacrylamide gel electrophoresis (gel concentration 5%) according to the method of Example 3, about 170 bp containing part of the human TNF gene was extracted according to the method of Example 2. D.N.
The A fragment <5alI+PvuII) was recovered from the polyacrylamide gel.
また、実施例3で得られたプラスミドpTNF3 10
μ9も100μlの10 iM T ris−H(J
(1)H7,5) 、 60111M Na (J、
71MM1llCf2水溶液に溶解させ、40ユニツ
トの制限酵素PvulI及び40ユニツトの制限酵素H
indI[[(宝酒造)を添加し、37℃で1時間切断
反応を行なった。そして、ポリアクリルアミドゲル電気
泳動(ゲル濃度5%)の侵、実施例2の方法に準じて、
ヒトTNF遺伝子の一部を含む約110bpのDNA断
片(PvuI[4−48ind Tl>ヲホ’)7’)
’))Lt7ミ’r’ゲルより回収した。In addition, plasmid pTNF3 obtained in Example 3 10
μ9 also contained 100 μl of 10 iM Tris-H (J
(1)H7,5), 60111M Na (J,
Dissolve in 71MM1llCf2 aqueous solution and add 40 units of restriction enzyme PvulI and 40 units of restriction enzyme H.
indI[[(Takara Shuzo) was added, and the cleavage reaction was carried out at 37°C for 1 hour. Then, polyacrylamide gel electrophoresis (gel concentration 5%) was carried out according to the method of Example 2.
Approximately 110 bp DNA fragment containing part of the human TNF gene (PvuI[4-48ind Tl>woho')7')
')) Recovered from Lt7mi'r' gel.
一方、大腸菌trpプロモーターを有するプラスミドp
Ys31N(約4.7Kbp) 5μ9を、上記と同様
に制限酵素(JaI及びHindI[で切断し、アガロ
ースゲル電気泳動くゲル濃度0.8%)の後、実施例3
の方法に準じて、プラスミドDYS31Nの大部分を含
む約4.7K bpのDNA断片((JaIH)−1i
ndll[)をアガロースゲルより回収した。On the other hand, plasmid p with E. coli trp promoter
Ys31N (approximately 4.7 Kbp) 5μ9 was digested with restriction enzymes (JaI and HindI) in the same manner as above, and after agarose gel electrophoresis (gel concentration 0.8%), Example 3
An approximately 4.7K bp DNA fragment ((JaIH)-1i
ndll[) was recovered from the agarose gel.
こうして得られた、ヒトTNF遺伝子の一部を含む約2
20bl)、約1yobp及び約110bl)の3つの
DNA断片とプラスミドpY831Nの大部分を含む約
4.7K bpのDNA断片とを混合し、エタノール沈
澱の後、実施例3の方法に準じて、T4−DNAリガー
ゼによる連結反応を行なった。反応終了後、実施例3の
方法に準じてエシェリヒア・コリC600r−+e−株
に導入し、形質転換株の中より目的のヒトTNF遺伝子
発現型プラスミドpTNF401NN(約5.2K b
p)を有するクローンを選択した。第6図に、そのプラ
スミドDTNF401NNの作成方法を示した。Approximately 2 cells containing part of the human TNF gene obtained in this way
20bl), about 1yobp and about 110bl) and a DNA fragment of about 4.7K bp containing most of plasmid pY831N, and after ethanol precipitation, T4 was prepared according to the method of Example 3. - A ligation reaction using DNA ligase was performed. After completion of the reaction, it was introduced into Escherichia coli C600r-+e- strain according to the method of Example 3, and the desired human TNF gene expression plasmid pTNF401NN (approximately 5.2K b
Clones with p) were selected. FIG. 6 shows the method for creating the plasmid DTNF401NN.
また、上記プラスミドpYs31N5μ9を、上記の方
法に準じて制限酵素pvu■で部分分解した後、さらに
制限酵素)(indllで切断し、アガロースゲル電気
泳動(ゲル1度0.8%)の後、実施例3の方法に準じ
て、trpプロモーターを含む約2.7K bpのDN
A断片[PvulI(21−Hind m ] ]1F
i−アガロースゲより回収した。In addition, the above plasmid pYs31N5μ9 was partially digested with the restriction enzyme pvu■ according to the above method, further cut with the restriction enzyme (indll), and after agarose gel electrophoresis (gel 1 degree 0.8%), According to the method of Example 3, approximately 2.7K bp of DNA containing the trp promoter was prepared.
A fragment [PvulI(21-Hind m ]] 1F
It was recovered from i-agarose gel.
次に第7図記載の塩基配列を有するオリゴヌクレオチド
を、実施例2の方法に準じて、合成・精製した。得られ
た2本の合成オリゴヌクレオチドそれぞれ0.5μ9に
ついて、実施例3の方法に準じて、末端のリン酸化を行
ない、アニーリングの後、先に得られた約2.7K b
oのDNA断片[pvuI(214−Hind m ]
トm合シ、I’51/−ル沈11(F)11、実施例3
の方法に準じて、T4−DNAリガーゼによる連結反応
を行なった。反応終了後、実施例3の方法に準じてエシ
ェリヒア・コリC600r−m−株に導入し、形質転換
株の中より目的のプラスミドpAA41(約2.7K
bp)を有するクローンを選択した。このようなプラス
ミドは、プラスミドDY S 31Nからコピー数制a
S域を除去し、trpプロモーター下流に存在するクロ
ーニング・サイトの下流に大腸菌trp Aターミネー
タ−を付与した形の、多コピー・高効率発現ベクターで
あり、第7図にその作成方法を示した。Next, an oligonucleotide having the base sequence shown in FIG. 7 was synthesized and purified according to the method of Example 2. The ends of each of the two synthetic oligonucleotides (0.5 μ9) obtained were phosphorylated according to the method of Example 3, and after annealing, the previously obtained approximately 2.7 K b
o DNA fragment [pvuI (214-Hind m ]
Tomaishi, I'51/-le Precipitation 11 (F) 11, Example 3
A ligation reaction using T4-DNA ligase was performed according to the method of . After the reaction was completed, it was introduced into Escherichia coli C600r-m- strain according to the method of Example 3, and the target plasmid pAA41 (approximately 2.7K
bp) was selected. Such plasmids can be obtained from plasmid DY S 31N by copy number control a
This is a multi-copy, high-efficiency expression vector in which the S region has been removed and the E. coli TRP A terminator has been added downstream of the cloning site located downstream of the trp promoter, and the method for its construction is shown in FIG.
このプラスミド1)AA41 2μ9を、上記と同様に
制限酵素CjaI及びl−1indlで切断し、アガロ
ースゲル電気法III(ゲル濃@ 0.8%)の後、実
施例3の方法に準じて、プラスミドDA A 41の大
部分ヲ含ム約2,7K bpのDNA断片(CfaI−
Hindll)を7ガロースゲルより回収した。This plasmid 1) AA41 2μ9 was cut with the restriction enzymes CjaI and l-1indl in the same manner as above, and after agarose gel electrolysis III (gel concentration @ 0.8%), the plasmid was extracted according to the method of Example 3. A DNA fragment of approximately 2.7 Kbp containing most of DA A41 (CfaI-
Hindll) was recovered from the 7 galose gel.
また、先に得られたヒトTNF遺伝子発現型プラスミド
pTNF 401NN5μ9を、上記と同様に制限酵素
CfaI及びl−1indll!で切断し、ポリアクリ
ルアミドゲル電気泳動くゲル濃度5%)の後、実施例2
の方法に準じて、ヒトTNF遺伝子全域を含む約49o
MのDNA断片(Cfa I←Hind m )をポリ
アクリルアミドゲルより回収した。Further, the previously obtained human TNF gene expression plasmid pTNF 401NN5μ9 was added to the restriction enzymes CfaI and l-1indll! in the same manner as above. Example 2
According to the method of
A DNA fragment of M (Cfa I←Hind m ) was recovered from the polyacrylamide gel.
こうして得られた、プラスミドDA A 41の大部分
を含む約2.7K bpのDNA断片とヒトTNF遺伝
子全域を含む約490bpのDNA断片とを混合し、エ
タノール沈澱の後、実施例3の方法に準じて、T4−D
NAリガーゼによる連結反応を行なった。The approximately 2.7K bp DNA fragment containing most of the plasmid DA A 41 thus obtained and the approximately 490 bp DNA fragment containing the entire human TNF gene were mixed, and after ethanol precipitation, the method of Example 3 was performed. Accordingly, T4-D
A ligation reaction using NA ligase was performed.
反応終了後、実施例3の方法に準じて、エシェリヒア・
コリ600r−m−株に導入し、形質転換株の中より目
的のプラスミドpT N F 401A (約3.2K
bp)を有するクローンを選択した。このプラスミドは
、ヒトTNF遺伝子をより効率良く発現させる能力を有
しており、第8図にその作成方法を示した。After completion of the reaction, according to the method of Example 3, Escherichia
The target plasmid pT NF 401A (approximately 3.2K
bp) was selected. This plasmid has the ability to express the human TNF gene more efficiently, and the method for its construction is shown in FIG.
実施例5(新規抗腫瘍活性ポリペプチド遺伝子発現型プ
ラスミドの作成)
実施例4で得られたヒトTNF遺伝子発現型プラスミド
pTNF 401A20μ9を、実施例4の方法に準じ
て制限酵素CIaI及びl−1indl[で切断し、ポ
リアクリルアミドゲル電気泳動(ゲル濃度5%)及びア
ガロースゲル電気泳動(ゲル濃度0.8%)の後、それ
ぞれ実施例2及び3の方法に準じて、生成する2つのD
NA断片(約490bD及び約2.7K bp、両方共
Cfa I”Hind 11 )をゲルより回収した。Example 5 (Creation of a novel antitumor active polypeptide gene expression plasmid) The human TNF gene expression plasmid pTNF 401A20μ9 obtained in Example 4 was treated with restriction enzymes CIaI and l-1indl according to the method of Example 4. After polyacrylamide gel electrophoresis (gel concentration 5%) and agarose gel electrophoresis (gel concentration 0.8%), two D
The NA fragment (approximately 490 bD and approximately 2.7 K bp, both Cfa I''Hind 11 ) was recovered from the gel.
ここで得られたヒトTNF遺伝子全域を含む約490b
pのDNA断片を50μ磨の10 aM T ris
−)−1(J (1)H7,4) 。 10 m
M M g 804 、 1 −Mジチオ
スレイトール水溶液に溶解させ、10ユニツトの制限酵
素HapI[(宝酒造)を添加して、37℃で1時間切
断反応を行なった。反応終了後、ボリアクリルアミドゲ
ル電気泳動(ゲル濃度5%)を行ない、実施例2の方法
に準じて、ヒトTNF遺伝子の大部分を含む約390b
pのDNA断片(Hap■←Hindll[)をポリア
クリルアミドゲルより回収した。Approximately 490b including the entire human TNF gene obtained here
Polish the DNA fragment of p with 10 aM Tris
-)-1(J(1)H7,4). 10 m
M M g 804 was dissolved in a 1-M dithiothreitol aqueous solution, 10 units of the restriction enzyme HapI (Takara Shuzo Co., Ltd.) was added, and a cleavage reaction was carried out at 37°C for 1 hour. After completion of the reaction, polyacrylamide gel electrophoresis (gel concentration 5%) was performed according to the method of Example 2, and approximately 390 b
A DNA fragment of p (Hap■←Hindll[) was recovered from the polyacrylamide gel.
また、第9図記載の塩基配列を有するオリゴヌクレオチ
ドを、実施例2の方法に準じて、合成。Furthermore, an oligonucleotide having the base sequence shown in FIG. 9 was synthesized according to the method of Example 2.
精製した。得られた4本の合成オリゴヌクレオチドそれ
ぞれ0.5μ9について、実施例3の方法に準じて、末
端のリン酸化を行ない、アニーリングの後、T4−DN
Aリガーゼによる連結反応を行なった。Purified. The terminals of 0.5μ9 of each of the four synthetic oligonucleotides obtained were phosphorylated according to the method of Example 3, and after annealing, T4-DN
A ligation reaction using A ligase was performed.
反応終了後、得られた2本鎖オリゴヌクレオチドを、先
に得られた約2,7K bpのDNA断片(Cja I
”Hind I[[)及びヒトTNF遺伝子の大部分ヲ
含ム約390bpノDNA断片(HapI HHind
n[)と混合し、エタノール沈澱の優、実施例3の方法
に準じて、T4−DNAリガーゼによる連結反応を行な
った。反応終了後、実施例3の方法に準じてエシェリヒ
ア・コリC600r−i−株に導入し、形質転換株の中
より目的のプラスミド1)TNF471(約3.2Kb
+))を有するクローンを選択した。このプラスミドは
、次のアミノ酸配列(82N ) −Ar(] −Ly
s−Ar(1−Lys−P ro −V al−A l
a −His −V at −V al−A 1a−A
sn −P ro −G In −A la −G
Iu −G ly −G In −L eu−G ln
−T rll−L eu−A Sn−A rO−A r
lJA Ia −A sn −A Ia −L eu
−L eu −A la −A snG ly−Val
−G lu−Leu−Aro−Asl Asn−Gln
−Leu−Val−Val−Pro−8er−Glu
−G IV−Leu−Tyr −Leu−11e−Ty
r−Ser −G ln−V al−L eu−P h
e−L ys−G ly−G 1n−G ly −CV
s −P ro −S er −T hr −His
−V at −1eu −Leu−Thr−)−1is
−Thr−11e−8erAra−11e−A Ia−
Val−5er−Tyr−G In −T hr −L
ys −V at −A sn −L eu −L
eu −S er −A la −11e−Lys −
Ser −P ro −Cys −G In −A r
a −G lu −T hr−P ro−G Iu−G
ly −A la −G lu −A la−L y
s −P ro −T rp −T yr−G 1uP
ro −11e −Tyr −Leu −G ly −
G Iy −VatP he −G ln−L eu
−G lu−L yS−G ly−A Sfl −Ar
g−Leu−8er−Ala−Glu−I 1e−As
nA rQ−P rO−A 5EI−T Vr−L e
u−A 5l)−P he−A Ia −G lu −
S er −G II/ −G In −V al −
T Vr −Phe−Gly −I Ie −11e−
Ala−Leu −(COOH)
で表わされる抗腫瘍性ポリペプチドまたはそのアミノ末
端にMetが結合しているポリペプチドをコードする発
現型プラスミドであり、第9図にその作成方法を示した
。After the reaction was completed, the obtained double-stranded oligonucleotide was mixed with the approximately 2.7K bp DNA fragment (Cja I
"An approximately 390 bp DNA fragment containing Hind I[[) and most of the human TNF gene (HapI HHind
n[), followed by ethanol precipitation, and a ligation reaction using T4-DNA ligase was performed according to the method of Example 3. After the reaction was completed, it was introduced into Escherichia coli C600r-i strain according to the method of Example 3, and the target plasmid 1) TNF471 (approximately 3.2 Kb) was selected from the transformed strain.
+)) were selected. This plasmid has the following amino acid sequence (82N) -Ar(]-Ly
s-Ar(1-Lys-Pro-V al-A l
a -His -V at -V al-A 1a-A
sn -Pro -G In -A la -G
Iu −G ly −G In −L eu−G ln
-T rll-L eu-A Sn-A rO-A r
lJA Ia -A sn -A Ia -L eu
-L eu -A la -A snG ly-Val
-G lu-Leu-Aro-Asl Asn-Gln
-Leu-Val-Val-Pro-8er-Glu
-G IV-Leu-Tyr -Leu-11e-Ty
r-Ser -G ln-V al-L eu-P h
e-Lys-Gly-G 1n-Gly-CV
s -Pro -S er -T hr -His
-V at -1eu -Leu-Thr-)-1is
-Thr-11e-8erAra-11e-A Ia-
Val-5er-Tyr-G In-Thr-L
ys −V at −A sn −L eu −L
eu -S er -A la -11e-Lys -
Ser -Pro -Cys -G In -A r
a -G lu -T hr-Pro-G Iu-G
ly -A la -G lu -A la-L y
s -Pro -Trp -Tyr-G 1uP
ro -11e -Tyr -Leu -G ly -
G Iy -VatP he -G ln-L eu
-G lu-L yS-G ly-A Sfl -Ar
g-Leu-8er-Ala-Glu-I 1e-As
nA rQ-P rO-A 5EI-T Vr-L e
u-A 5l)-Phe-A Ia-Glu-
S er −G II/ −G In −V al −
T Vr -Phe-Gly -I Ie -11e-
This is an expression plasmid encoding an antitumor polypeptide represented by Ala-Leu-(COOH) or a polypeptide having Met bound to its amino terminus, and the method for its construction is shown in FIG.
一方、上記で得られた発現型プラスミドpTNF 47
1 20μ9を、実施例4の方法に準じて制限111H
indllrで切断した後、50 sM Tris
−HCj (pH7,4) 、 100 mM N
a C1,10iMM(II 804水溶液中で制限酵
素NcoI(宝酒造)による切断反応を37℃で1時間
行なう。反応終了後、アガロースゲル電気泳動(ゲル濃
度0.7%)及びポリアクリルアミドゲル電気泳動(ゲ
ル濃度5%)を行ない、実施例2の方法に準じて、ヒト
TNF遺伝子の一部を含む約140bl)のDNA断片
(NcoI4−41−1i口dll[)をポリアクリル
アミドゲルより、そして実施例3の方法に準じて、pT
NF471の大部分を含む約3.0K bpのDNA断
片(NcoI+Hind II[)をアガロースゲルよ
り、それぞれ回収した。On the other hand, the expression plasmid pTNF47 obtained above
1 20μ9 is limited to 111H according to the method of Example 4.
After cutting with indllr, 50 sM Tris
-HCj (pH 7,4), 100 mM N
a A cleavage reaction using the restriction enzyme NcoI (Takara Shuzo) in a C1,10iMM (II 804 aqueous solution) was performed at 37°C for 1 hour. After the reaction was completed, agarose gel electrophoresis (gel concentration 0.7%) and polyacrylamide gel electrophoresis ( A DNA fragment of about 140 bl) containing a part of the human TNF gene (NcoI4-41-1i dll [)] was extracted from a polyacrylamide gel according to the method of Example 2. According to method 3, pT
A DNA fragment of approximately 3.0 Kbp (NcoI+Hind II [) containing most of NF471 was recovered from the agarose gel.
さらに、上で得られた約140bpのDNA断片(Nc
oI+Hind I[I)を50μ交の10+M T
ris−HCI (tlH7,4) 、 10 a+M
MQ 804 、111Mジチオスレイトール水溶
液に溶解させ、10ユニツトの制限酵素ACC■(宝酒
造)を添加して、37℃で1時間切断反応を行なった。Furthermore, the approximately 140 bp DNA fragment obtained above (Nc
oI+Hind I[I] 10+M T with 50μ intersection
ris-HCI (tlH7,4), 10a+M
MQ 804 was dissolved in a 111M dithiothreitol aqueous solution, 10 units of restriction enzyme ACC (Takara Shuzo) was added, and a cleavage reaction was carried out at 37°C for 1 hour.
反応終了後、ポリアクリルアミドゲル電気泳動(ゲル濃
度8%)を行ない、実施例2の方法に準じて、ヒトTN
F遺伝子の一部を含む約110bpのDNA断片(N
c。After the reaction, polyacrylamide gel electrophoresis (gel concentration 8%) was performed, and human TN was analyzed according to the method of Example 2.
Approximately 110 bp DNA fragment containing part of the F gene (N
c.
工←ACCI)をポリアクリルアミドゲルより回収した
。ACCI) was recovered from the polyacrylamide gel.
また、第10図記載の塩基配列を有するオリゴヌクレオ
チドを、実施例2の方法に準じて、合成。Furthermore, an oligonucleotide having the base sequence shown in FIG. 10 was synthesized according to the method of Example 2.
精製した。得られた2本の合成オリゴヌクレオチドそれ
ぞれ0.5μ9について、実施例3の方法に準じて、末
端のリン酸化を行ない、アニーリングを行なった。Purified. 0.5 μ9 of each of the two synthetic oligonucleotides obtained were subjected to terminal phosphorylation and annealing according to the method of Example 3.
アニーリングの後、得られた2本鎖オリゴヌクレオチド
を、先に得られた約3.OK bpのDNA断片(Nc
oI +Hind I[I )及びヒトTNF遺伝子の
部含む約110bpのDNA断片(NcoI MACC
I )と混合し、エタノール沈殿の後、実施例3の方法
に準じて、T4−DNAリガーゼによる連結反応を行な
った。反応終了後、実施例3の方法に準じてエシェリヒ
ア・コリC600r−111−株に導入し、形質転換株
の中より目的のプラスミドpTNF619(約3.2K
bp)を有するクローンを選択した。このプラスミド
は、次のアミノ酸配列
(H2N)−Arg−Lys−Arg LyS−P r
o −V at −A la −His −V al
−V al −A la −A sn −P ro−Q
ln−A ta −Q lu −G ly −Q I
n −L eu −G ln−T ro−L eu −
A Sn −Arg −A rg −A la−A s
n−A la−1eu−L eu−A la−Asn
−G ly−V al−G Iu−L eLl−A r
Q−A 5l)−A 5n−G ln−L eu−V
al−V al−P ro −S er−(31uG+
y−Leu−Tyr−Leu−I 1e−Tyr−5e
r−G In−Val −Leu −Phe −L y
s −G ly −G In −G Iy −Cys−
P ro −S er −T hr−His−V al
−1eu−Leu−Thr−His−Thr−I I
e−5er−ArQ−11e=AIa−Val−8er
−Tyr−GlnT hr−L ys−V al−A
sn−L eu −L eu −S er−A la−
t Ie−L”/S−5er−P rO−cys−G
1n−A rg−G lu−Thr−P ro−G l
u−G ly−A Ia−Q ll−A Ia−LVS
−P rO−T rl)−T’/r−G 1u−P r
o−11e −Tyr−Leu −G Iy −G l
y −Val −P he−G ln−L eu−G
lu−L ys−G ly−A 5p−ArO−Leu
−8er−Ala−Glu −11e−Asn −A
rg−P ro−A sp −T yr −L eu
−A sp−P he −A Ia−G lu−5er
−G IV−G In−V al−Tyr−Phe−G
ly−I le−I le−Phe−l eu−(C
OOH)
で表わされる抗腫瘍性ポリペプチドまたはそのアミノ末
端にMetが結合しているポリペプチドをコードする抗
腫瘍活性ポリペプチド遺伝子発現型プラスミドであり、
第10図にその作成方法を示した。After annealing, the resulting double-stranded oligonucleotide is combined with the previously obtained approximately 3. OK bp DNA fragment (Nc
oI + Hind I[I] and an approximately 110 bp DNA fragment containing a portion of the human TNF gene (NcoI MACC
I), and after ethanol precipitation, a ligation reaction using T4-DNA ligase was performed according to the method of Example 3. After the reaction was completed, it was introduced into Escherichia coli C600r-111- strain according to the method of Example 3, and the target plasmid pTNF619 (approximately 3.2K
bp) was selected. This plasmid has the following amino acid sequence (H2N)-Arg-Lys-ArgLyS-Pr
o -V at -A la -His -V al
-V al -A la -A sn -Pro-Q
ln-A ta -Q lu -G ly -Q I
n -L eu -G ln-T ro -L eu -
A Sn -Arg -A rg -A la-A s
n-A la-1eu-L eu-A la-Asn
-G ly-V al-G Iu-L eLl-A r
Q-A 5l)-A 5n-G ln-L eu-V
al-V al-Pro-Ser-(31uG+
y-Leu-Tyr-Leu-I 1e-Tyr-5e
r-G In-Val -Leu -Phe -L y
s -G ly -G In -G Iy -Cys-
Pro-Ser-Thr-His-Val
-1eu-Leu-Thr-His-Thr-I I
e-5er-ArQ-11e=AIa-Val-8er
-Tyr-GlnT hr-Lys-V al-A
sn-Leu-Leu-Ser-Ala-
t Ie-L”/S-5er-P rO-cys-G
1n-A rg-G lu-Thr-Pro-G l
u-G ly-A Ia-Q ll-A Ia-LVS
-P rO-T rl)-T'/r-G 1u-P r
o-11e -Tyr-Leu -G Iy -G l
y -Val -P he-G ln-L eu-G
lu-Lys-Gly-A 5p-ArO-Leu
-8er-Ala-Glu -11e-Asn -A
rg-Pro-Asp-Tyr-Leu
-A sp-P he -A Ia-G lu-5er
-G IV-G In-V al-Tyr-Phe-G
ly-I le-I le-Phe-le eu-(C
An antitumor active polypeptide gene expression plasmid encoding an antitumor polypeptide represented by OOH) or a polypeptide having Met bound to its amino terminus,
Fig. 10 shows the method for making it.
上記で得られた発現型プラスミドI)T N F 61
920μ9を、実施例4の方法に準じて制限酵素Hin
dI[Iで切断した後、50 mM Trys −H
(J(pH7,4) 、 100 mM
Na Cj、 10 sM M g804水
溶液中で制限酵素BstEII(東洋紡)による切断反
応を60℃で1時間行なう。反応終了後、アガロースゲ
ル電気泳動くゲル濃度0.7%)を行ない、実施例3の
方法に準じて、DTNF619の大部分を含む約3.O
K bl)のDNA断片(BstEI[←HindI[
[)をアガロースゲルより回収した。Expression type plasmid I) TN F 61 obtained above
920μ9 was treated with the restriction enzyme Hin according to the method of Example 4.
After cutting with dI[I, 50 mM Trys-H
(J(pH7,4), 100mM
A cleavage reaction using the restriction enzyme BstEII (Toyobo) is carried out at 60° C. for 1 hour in an aqueous solution of Na Cj, 10 sM M g804. After completion of the reaction, agarose gel electrophoresis (gel concentration: 0.7%) was performed according to the method of Example 3, and approximately 3.0% of DTNF619 containing the majority of DTNF619 was analyzed. O
Kbl) DNA fragment (BstEI[←HindI[
[) was recovered from the agarose gel.
また、第11図記載の塩基配列を有するオリゴヌクレオ
チドを、実施例2の方法に準じて、合成。Furthermore, an oligonucleotide having the base sequence shown in FIG. 11 was synthesized according to the method of Example 2.
精製した。得られた2本の合成オリゴヌクレオチドそれ
ぞれ0.5μ9について、実施例3の方法に準じて、末
端のリン酸化を行ない、アニーリングを行なった。Purified. 0.5 μ9 of each of the two synthetic oligonucleotides obtained were subjected to terminal phosphorylation and annealing according to the method of Example 3.
アニーリングの後、得られた2本鎖オリゴヌクレオチド
を、先に得られた約3.0K bpのDNA断片(Bs
tE If HHind I[[) ト共に1り/−4
沈殿した後、実施例3の方法に準じて、T4−DNAリ
ガーゼによる連結反応を行なった。反応終了後、実施例
3の方法に準じてエシェリヒア・コリC600r−i−
株に導入し、形質転換株の中より目的のプラスミドI)
TNF66B(約3.2Kbp)を有するクローンを選
択した。このプラスミドは、次のアミノ酸配列
(82N ) Arg−Lys−Argiys−P
ro −Vat −A !a−l−1iS−Val−V
al−A laA sn −P ro −G In −
A Ia −G tu −G Iy −G In −L
etl−Gln−TrCl−LelJ−ASn−A、r
(J−ArU−A la −A sn −A la −
1eu −L eu −A la −A sn −Gl
y−Val−Glu−1,、−eu−Arg−Asp−
Asn −Gln−Leu−Val−Val−Pro−
8er−Glu −G Iy −Leu−Tyr −L
eu −11e −Tyr −Ser −G In −
V al−L eu −P he−L vs−G lv
−G InG IV −CyS−P ro −S er
−T hr −His−V at −Leu −Le
u −Thr −His −Thr −11e−8er
−Ar(1−[1e−Ala−vat−8er−TV
r−Gln −Thr−Lys−Val−Asn −L
eu −l eu−8er −A la −[le −
Lys −Ser −Pro −Cys−G In −
A rg−G lu−T hr−P ro−G lu−
G ly−A Ia−G lu−A la−L ys−
P ro−T rp−T yr−G Iu −P ro
−1le −TVr −Leu −G ly−G l
y−Val −P he−G In−L eu−G I
u−L ys−G ly −A Sp −Arg −L
eu−3er−Thr−Glu−11e−Asn −A
rQ−P rO−A 5l)−T Vr−L eu−
A 5l)−P he−A la −G Iu −S
er −G ly −G In −V at −T y
r −Phe−Gly −1le −11g−Phe−
1eu−(COOH”)
で表わされる抗腫瘍性ポリペプチドまたはそのアミノ末
端にMetが結合しているポリペプチドをコードする抗
腫瘍活性ポリペプチド遺伝子発現型プラスミドであり、
第11図にその作成方法を示した。After annealing, the obtained double-stranded oligonucleotide was combined with the previously obtained approximately 3.0K bp DNA fragment (Bs
tE If HHind I[[] Both are 1/-4
After precipitation, a ligation reaction using T4-DNA ligase was performed according to the method of Example 3. After the reaction, Escherichia coli C600r-i-
The desired plasmid I) is introduced into the strain and selected from among the transformed strains.
A clone with TNF66B (approximately 3.2 Kbp) was selected. This plasmid has the following amino acid sequence (82N) Arg-Lys-Argiys-P
ro-Vat-A! a-l-1iS-Val-V
al-A laA sn -Pro -G In -
A Ia -G tu -G Iy -G In -L
etl-Gln-TrCl-LelJ-ASn-A, r
(J-ArU-A la -A sn -A la -
1eu -L eu -A la -A sn -Gl
y-Val-Glu-1, -eu-Arg-Asp-
Asn -Gln-Leu-Val-Val-Pro-
8er-Glu-G Iy-Leu-Tyr-L
eu -11e -Tyr -Ser -G In -
V al-L eu -P he-L vs-G lv
-G InG IV -CyS-Pro -Ser
-T hr -His-V at -Leu -Le
u -Thr -His -Thr -11e-8er
-Ar(1-[1e-Ala-vat-8er-TV
r-Gln-Thr-Lys-Val-Asn-L
eu -l eu-8er -A la -[le -
Lys-Ser-Pro-Cys-G In-
A rg-G lu-T hr-Pro-G lu-
G ly-A Ia-G lu-A la-L ys-
Pro-Trp-Tyr-G Iu-Pro
-1le -TVr -Leu -G ly-G l
y-Val -P he-G In-L eu-G I
u-L ys-G ly -A Sp -Arg -L
eu-3er-Thr-Glu-11e-Asn-A
rQ-P rO-A 5l)-T Vr-L eu-
A5l)-Phe-Ala-GIu-S
er −G ly −G In −V at −T y
r -Phe-Gly -1le -11g-Phe-
An antitumor active polypeptide gene expression plasmid encoding an antitumor polypeptide represented by 1eu-(COOH") or a polypeptide having Met bound to its amino terminus,
FIG. 11 shows the method for making it.
実施例6(発現の確認)
前記実施例5で得られた新規抗腫瘍活性ポリペプチド遺
伝子発現型プラスミドEITNF668を有するエシェ
リヒアφコリC600r−m−株を、30μ9/I11
のアンピシリン、0.2%のグルコース及び4Jl/a
ltのカザミノ酸を含むM9培地[0,6%N8 2
8PO4−0,3%に2 HPO4−0,05%Na
cf−0,1%NH*Cj水溶液(1)87.4)をオ
ートクレーブ滅菌した後に、別途にオートクレーブ滅菌
したMg5on水溶液及びCaCl2水溶液をそれぞれ
最終濃度211M及び0.1 iMになるように加える
。] 200dに接種し、ODoρが0.1に達する
まで、37℃で振どう培養を行なった。次いで、最終濃
度50μ9/dの3−β−インドールアクリル酸を培養
液中に添加し、さらに37℃で12時間振どう培養を続
けた。Example 6 (Confirmation of expression) Escherichia φ coli C600r-m- strain having the novel anti-tumor active polypeptide gene expression plasmid EITNF668 obtained in Example 5 was incubated at 30μ9/I11.
of ampicillin, 0.2% glucose and 4 Jl/a
M9 medium containing lt of casamino acids [0,6% N8 2
8PO4-0,3% to 2HPO4-0,05%Na
After sterilizing the cf-0, 1% NH*Cj aqueous solution (1) 87.4) in an autoclave, separately sterilized Mg5on aqueous solution and CaCl2 aqueous solution are added to final concentrations of 211 M and 0.1 iM, respectively. ] The cells were inoculated at 200 d, and cultured with shaking at 37° C. until ODoρ reached 0.1. Next, 3-β-indoleacrylic acid at a final concentration of 50 μ9/d was added to the culture solution, and the culture was further continued with shaking at 37° C. for 12 hours.
遠心分離により大腸菌国体を集めた後、PBSバッフ?
−(150g+M Na C1を含む20 sMリ
ン酸バッファー、 EIH7,4>を用いて菌体の洗
浄を行なった。洗浄後の菌体を10I11のPBSバッ
ファーに懸濁させ、超音波発生装置(久保田、 20
0M型)を用いて菌体を破壊した後、遠心分離により菌
体残漬の除去を行なった。After collecting Escherichia coli by centrifugation, PBS buffer?
- (20 sM phosphate buffer containing 150 g+M NaCl, EIH7,4>) was used to wash the bacterial cells.The washed bacterial cells were suspended in 10I11 PBS buffer and placed in an ultrasonic generator (Kubota, 20
After the bacterial cells were disrupted using 0M type), residual bacterial cells were removed by centrifugation.
得られた大腸菌ライゼートの一部に対して、Tris−
HCfバッファー (pH6,8> 、 SDS、 2
−メルカプトエタノール、グリセロールを、それぞれ最
終部1!160eM、2%、 4%、 10%Gi:ナ
ルヨうに加え、5DS−ポリアクリルアミドゲル電気泳
動[鈴木、遺伝、 31.43 (1977) ]を行
なった。A portion of the obtained E. coli lysate was treated with Tris-
HCf buffer (pH 6,8>, SDS, 2
- Mercaptoethanol and glycerol were added to the final portions of 1!160 eM, 2%, 4%, and 10% Gi:Naruyo, respectively, and 5DS-polyacrylamide gel electrophoresis [Suzuki, Genetics, 31.43 (1977)] was performed. .
分離用ゲルは15%とし、泳動バッファーはSOS。The separation gel was 15%, and the running buffer was SOS.
T ris−グリシン系[U、 K、 Lae+u+l
i。Tris-glycine system [U, K, Lae+u+l
i.
Nature 、 227. 680(1970)
]を用いた。電気泳動終了後、ゲル中の蛋白質をクーマ
シープルーR−250(バイオ・ランド)で染色し、新
規抗腫瘍活性ポリペプチド遺伝子の発現の確認を行なっ
た。Nature, 227. 680 (1970)
] was used. After the electrophoresis was completed, the proteins in the gel were stained with Coomassie Blue R-250 (Bio-Rand) to confirm the expression of the novel antitumor active polypeptide gene.
実施例7(活性の評価)
新規抗腫瘍活性ポリペプチドのin VitrO抗癌活
性測定は、前記Ruffの方法に準じて行なった。Example 7 (Evaluation of Activity) The in VitrO anticancer activity of the novel antitumor active polypeptide was measured according to the method of Ruff.
すなわち、実施例6で得られた新規抗腫瘍活性ポリペプ
チドを含む大腸菌ライゼートを順次培地で希釈した試料
100μ文と、4 X 105個/dの濃度のマウスL
−9291維芽細胞(ATCCCCL929)懸濁液1
00μρを、96穴の組織培養用マイクロプレート(コ
ースタ−)内で混合した。なおこの際に、最終濃度1μ
g/ldのアクチノマイシンD(コスメゲン、萬有製薬
)を添加しておく。That is, 100μ of the E. coli lysate containing the novel antitumor active polypeptide obtained in Example 6 was diluted in a medium, and mouse L at a concentration of 4 x 105 cells/d.
-9291 fibroblast (ATCCCCCL929) suspension 1
00 μρ was mixed in a 96-well tissue culture microplate (Coaster). At this time, the final concentration is 1μ
g/ld of actinomycin D (Cosmegen, Banyu Pharmaceutical) is added.
培地としては、5%(vol /vol )のウシ胎児
血清を含むイーグルのミニマム・エッセンシャル培地(
日永製薬)を用いた。上記マイクロプレートを、5%炭
酸ガスを含む空気中、37℃で18〜20時間培養した
後、クリスタル・バイオレット溶液[5%(vol/v
at )メタノール水溶液に、0.5%(wt/vol
)のクリスタル・バイオレットを溶解させたもの]を
用いて生細胞を染色した。余分なりリスタル・バイオレ
ットを洗い流し乾燥した後、残ったクリスタル・バイオ
レットを100μ文の0.5%SDS水溶液で抽出し、
その595nmにおける吸光度をELISAアナライザ
ー(東洋側器。The medium used was Eagle's Minimum Essential Medium containing 5% (vol/vol) fetal bovine serum.
Hinaga Pharmaceutical) was used. After culturing the above microplate at 37°C for 18 to 20 hours in air containing 5% carbon dioxide, a crystal violet solution [5% (vol/v
at) 0.5% (wt/vol) in methanol aqueous solution
) was used to stain living cells. After washing away the excess crystal violet and drying it, the remaining crystal violet was extracted with 100μ of 0.5% SDS aqueous solution.
The absorbance at 595 nm was measured using an ELISA analyzer (Toyo sideki).
ETY−96型)で測定する。この吸光度は、生き残っ
た細胞数に比例する。そこで、抗腫瘍活性ポリペプチド
等を含む大腸菌ライゼートの希釈溶液を加えない対照の
吸光度の50%の値に相当する大腸菌ライゼートの希釈
倍率をグラフ(たとえば第12図)によって求め、その
希釈倍率をユニットと定義する。第12図より、発現型
プラスミドpTNF668にコードされる新規抗腫瘍活
性ポリペプチドを含む大鵬菌ライゼート100μ隻は3
.5X 105ユニツトの活性を有していることが用ら
かになった。ETY-96 model). This absorbance is proportional to the number of surviving cells. Therefore, the dilution factor of E. coli lysate containing antitumor active polypeptide, etc., which corresponds to 50% of the absorbance of the control to which no diluted solution is added, is calculated using a graph (for example, Fig. 12), and the dilution factor is calculated by unit. It is defined as From Figure 12, 100μ of the Taiho bacterium lysate containing the novel antitumor active polypeptide encoded by the expression plasmid pTNF668 is 3
.. It was found that the compound had an activity of 5×105 units.
第1図は設計したヒトTNF遺伝子の塩基配列を、第2
図は化学合成した合成オリゴヌクレオチドの塩基配列を
、それぞれ示したものである。第3図、第4図及び第5
図は、ヒトTNF遺伝子の一部を有するプラスミドpT
NFIBR,pTNF2N及びpTNF3の作成方法を
、それぞれ示したものである。第6図はヒトTNF遺伝
子発現型プラスミドpTNF 401NNの作成方法を
、第7図は発現ベクターpA A 41の作成方法を、
そして第8図はヒトTNF遺伝子発現型プラスミド1)
TNF401Aの作成方法を、それぞれ示したものであ
る。第9図は抗腫瘍活性ポリペプチド遺伝子発現型プラ
スミド1)TNF471の作成方法を示したものである
。第10図は抗腫瘍活性ポリペプチド遺伝子発現型プラ
スミド1lTNF619の作成方法を示したものである
。第11図は新規抗腫瘍活性ポリペプチド遺伝子発現型
プラスミドpTNF668の作成方法を示したものであ
る。第12図は新規抗腫瘍活性ポリペプチドのin V
itrO抗癌活性測定結果を示したものである。Figure 1 shows the nucleotide sequence of the designed human TNF gene, and
The figures show the base sequences of chemically synthesized synthetic oligonucleotides. Figures 3, 4 and 5
The figure shows plasmid pT containing part of the human TNF gene.
The methods for producing NFIBR, pTNF2N, and pTNF3 are shown. Figure 6 shows the method for creating the human TNF gene expression plasmid pTNF401NN, and Figure 7 shows the method for creating the expression vector pA A41.
Figure 8 shows human TNF gene expression plasmid 1)
Each method for creating TNF401A is shown. FIG. 9 shows the method for producing the antitumor active polypeptide gene expression plasmid 1) TNF471. FIG. 10 shows the method for constructing the antitumor active polypeptide gene expression plasmid 11TNF619. FIG. 11 shows the method for constructing the novel antitumor active polypeptide gene expression plasmid pTNF668. Figure 12 shows the in V
This figure shows the results of itrO anticancer activity measurement.
Claims (10)
する請求項1記載のポリペプチド。(2) The polypeptide according to claim 1, characterized in that Met is bound to the amino terminus.
ノ末端にMetが結合しているポリペプチドをコードす
るDNA領域を含む組換えプラスミド。(3) A recombinant plasmid containing a DNA region encoding a novel physiologically active polypeptide represented by the following amino acid sequence (gene sequence available) or a polypeptide with Met bound to its amino terminus.
Aとから成る二本鎖DNAを含むことを特徴とする請求
項3記載のプラスミド。(4) Single-stranded DNA whose DNA region is represented by the following base sequence [there is a gene sequence] and its complementary single-stranded DNA
The plasmid according to claim 3, characterized in that it contains a double-stranded DNA consisting of A.
Aとから成る二本鎖DNAを含むことを特徴とする請求
項3記載のプラスミド。(5) Single-stranded DNA whose DNA region is represented by the following base sequence [there is a gene sequence] and its complementary single-stranded DNA
The plasmid according to claim 3, characterized in that it contains a double-stranded DNA consisting of A.
請求項3記載のプラスミド。(6) The plasmid according to claim 3, wherein the plasmid is plasmid pTNF668.
ノ末端にMetが結合しているポリペプチドをコードす
るDNA領域を含む組換えプラスミドにより形質転換さ
れた組換え微生物細胞。(7) A recombinant transformed with a recombinant plasmid containing a DNA region encoding a novel physiologically active polypeptide represented by the following amino acid sequence [gene sequence is available] or a polypeptide with Met bound to its amino terminus. modified microbial cells.
とする請求項7記載の微生物細胞。(8) The microbial cell according to claim 7, wherein the microbial cell is Escherichia coli.
ノ末端にMetが結合しているポリペプトチドをコード
するDNA領域を含む組換えプラスミドにより形質転換
された組換え微生物細胞を培養し、培養物中に新規生理
活性ポリペプチドを生成蓄積せしめ、得られた培養物か
ら新規生理活性ポリペプチドを分離することを特徴とす
る、新規生理活性ポリペプチドの製造方法。(9) Recombinant transformation with a recombinant plasmid containing a DNA region encoding a novel physiologically active polypeptide represented by the following amino acid sequence [gene sequence is available] or a polypeptide with Met attached to its amino terminus. 1. A method for producing a novel bioactive polypeptide, which comprises culturing microbial cells, producing and accumulating a novel bioactive polypeptide in the culture, and isolating the novel bioactive polypeptide from the resulting culture.
配列があります】 で表わされる新規生理活性ポリペプチドまたはそのアミ
ノ末端にMetが結合しているポリペプチドを含有する
医薬組成物。(10) A pharmaceutical composition containing an antitumor-effective amount of a novel physiologically active polypeptide represented by the following amino acid sequence (gene sequence is available) or a polypeptide having Met bound to its amino terminus.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2019074A JPH03224479A (en) | 1990-01-31 | 1990-01-31 | Novel bioactive polypeptide |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2019074A JPH03224479A (en) | 1990-01-31 | 1990-01-31 | Novel bioactive polypeptide |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH03224479A true JPH03224479A (en) | 1991-10-03 |
Family
ID=11989292
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2019074A Pending JPH03224479A (en) | 1990-01-31 | 1990-01-31 | Novel bioactive polypeptide |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH03224479A (en) |
-
1990
- 1990-01-31 JP JP2019074A patent/JPH03224479A/en active Pending
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