WO1999064455A1 - Peptides a activite de transport du noyau - Google Patents
Peptides a activite de transport du noyau Download PDFInfo
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- WO1999064455A1 WO1999064455A1 PCT/JP1999/003015 JP9903015W WO9964455A1 WO 1999064455 A1 WO1999064455 A1 WO 1999064455A1 JP 9903015 W JP9903015 W JP 9903015W WO 9964455 A1 WO9964455 A1 WO 9964455A1
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- peptide
- seq
- oligonucleotide
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- nuclear
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Classifications
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- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
- C12N15/09—Recombinant DNA-technology
- C12N15/63—Introduction of foreign genetic material using vectors; Vectors; Use of hosts therefor; Regulation of expression
- C12N15/79—Vectors or expression systems specially adapted for eukaryotic hosts
- C12N15/80—Vectors or expression systems specially adapted for eukaryotic hosts for fungi
- C12N15/81—Vectors or expression systems specially adapted for eukaryotic hosts for fungi for yeasts
- C12N15/815—Vectors or expression systems specially adapted for eukaryotic hosts for fungi for yeasts for yeasts other than Saccharomyces
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2319/00—Fusion polypeptide
Definitions
- the present invention relates to a peptide having an activity of translocating to a nucleus in a cell, and a DNA encoding the peptide. Since the peptide can be used as a carrier for transporting a substance to the nucleus, the present invention mainly belongs to the field of drug delivery (drug 'Delino, Li).
- Delivering the drug specifically to the target site and maintaining the optimal concentration at the target site is very important for effectively exhibiting the efficacy and reducing the side effects of the drug. For this reason, various systems have been developed for delivering drugs to specific target sites.
- a number of methods have been developed for transporting substances to the nucleus, including microinjection, transfection, antibody, and peptide methods.
- the microinjection method is a method for reliably and directly introducing a sample into the nucleus through a small injection needle. Usually, it is frequently used to introduce high molecular substances such as nucleic acids and proteins. However, the amount that can be injected into the nucleus is very small, and especially when the sample does not have the property of being stably retained in the nucleus, the sample rapidly diffuses out of the nucleus at the same time as the injection. It is also conceivable.
- the transfusion method (Experimental Medicine Separate Volume, New Handbook of Genetic Engineering, Yodosha, 155-168 [1996]) has been widely used especially for the introduction of foreign genes.
- Methods such as the DEAM dextran method, the ribosome method, and the lipofection method, are known. In these methods, after a complex is formed between the sample and the carrier, it is taken up into cells by phagocytosis or membrane fusion, and the detailed mechanism is not yet clear, but finally the sample is introduced into the nucleus. That's how it works.
- An object of the present invention is to provide a novel peptide having a nuclear transport activity and a DNA encoding the peptide. It is also an object to provide a nuclear mass transport system using these.
- NTT method a method for easily isolating DNA encoding a peptide having nuclear translocation activity by utilizing the properties of a transcription factor.
- This method was named "NTT method").
- the principle of the NTT method is as follows. Eukaryotic transcription factors translocate into the nucleus and interact with the promoter region of certain genes. It has a function of inducing the expression of the specific gene by acting, and it is considered that the nuclear translocation ability of the transcription factor is caused by a nuclear translocation signal present in the transcription factor.
- a region having a nuclear translocation ability in a transcription factor is removed and a fusion protein in which an unknown peptide is introduced is expressed in a cell instead, an unknown peptide in the fusion protein is expressed. If has the ability to translocate to the nucleus, the fusion protein translocates into the nucleus and acts with a specific promoter region, thereby inducing the expression of a specific gene downstream thereof. On the other hand, if the unknown peptide in the fusion protein does not have nuclear translocation ability, the fusion protein will not translocate into the nucleus, and the expression of a specific gene downstream of the promoter region will not be induced.
- the unknown peptide in the fusion protein has a nuclear translocation ability. It is possible to determine whether or not to have it.
- the present inventors have prepared a fusion DNA of a DNA encoding a transcription factor from which a region having nuclear translocation ability has been removed and a test DNA, and have prepared a promoter that is activated when the transcription factor binds.
- the region and the repo overnight gene whose expression is induced by the activation of the promoter region were introduced into a eukaryotic host holding the nucleus, and the expression of the repo overnight gene was detected.
- MA encoding a peptide having nuclear translocation ability is used as the test DNA, expression of the reporter gene is induced, while the test DNA does not have nuclear translocation ability.
- the DNA encoding the peptide was used, no reporter gene expression was induced. That is, it has been found that, based on the above principle, a DNA encoding a peptide having nuclear translocation activity can be actually isolated specifically.
- the present inventors next prepared a library of cDNAs encoding a fusion protein of a transcription factor from which a region having nuclear translocation ability was removed and another peptide, and introduced this into a cell.
- a cDNA encoding a peptide having nuclear translocation ability was screened using the expression of the repo overnight as an index.
- the core from the cMA library Several new DNAs encoding peptides having translocation activity were successfully isolated.
- the present invention relates to a novel DNA encoding a peptide having nuclear translocation activity isolated by the NTT method, which was uniquely developed by the present inventors, a peptide encoded by the DNA, and uses thereof. More specifically,
- a peptide comprising the amino acid sequence of any one of SEQ ID NOs: 1 to 21 and 101 to 107 and having nuclear translocation activity
- a peptide according to (1) or (2) which is a fusion peptide containing a desired peptide for translocation to the nucleus;
- peptide refers to a compound in which amino acids are bonded to each other via peptide bonds. Therefore, “polypeptides” and “proteins” that are peptides having a long chain length are also included in the “peptide” of the present invention.
- DNAs encoding peptides having nuclear translocation activity isolated by the NTT method and developed by the present inventors are shown in SEQ ID NOs: 22 to 42 and 92 to 100.
- the peptides encoded by these DNAs included in the peptides of the present invention are shown in SEQ ID NOs: 1 to 21 and 101 to 107, respectively.
- the peptides of the present invention have a common feature of having nuclear transport activity. For this reason, the peptide of the present invention is required to transport a substance desired to be transported to the nucleus to the nucleus. It can be used as a body. As the peptide of the present invention used for transporting a substance to the nucleus, a peptide containing an amino acid sequence described in any one of SEQ ID NOs: 1 to 21 and 101 to 107 is preferable.
- peptides having an amino acid sequence in which one or more amino acids have been substituted, deleted, and / or added in the amino acid sequence of these peptides can be used as long as they have nuclear translocation activity.
- Such amino acid modifications can be performed by methods known to those skilled in the art, for example, site-directed mutagenesis (Curretnt Protocols in Molecular Biology edit. Ausubel et al. (1987) Publich. Jhon Wily & Sons Section 8.1-8.5). ) And PCR (PCR Primer A Laboratory Manual, Cold Spring Harbor Laboratory Press, 1995, 581-621).
- the amino acid modification site and the number of modifications are not particularly limited as long as the modified peptide retains nuclear translocation activity.
- the number of modified amino acids is usually within 20 amino acids, preferably within 10 amino acids, more preferably within 5 amino acids, and further preferably within 3 amino acids.
- the substance for transporting the peptide of the present invention to a nucleus as a carrier is not particularly limited.
- peptides, nucleic acids, polysaccharides, metals, synthetic compounds and the like can be mentioned.
- These substances can be, but are not limited to, drugs for treating, preventing, or diagnosing a disease.
- the substance may be used for purposes other than clinical application, for example, for biological analysis.
- the bond may be a chemical cross-linking using a cross-linking agent (Biochemical Experiment Lecture 2, edited by The Biochemical Society of Japan 2, Protein Chemistry (below), Tokyo Kagaku Dojin, 604-618).
- the DNA encoding the peptide and the DNA encoding the peptide of the present invention are linked to each other by expressing these peptides as fusion peptides. It is also possible to bind peptides.
- the connection may be through a spacer region.
- a binding utilizing mutual affinity generated between the peptide of the present invention and a substance for transporting to the nucleus may be used.
- binding forms include, for example, binding using electrostatic affinity, binding using hydrophobic affinity, binding using a binding motif such as protein-protein or protein-nucleic acid, and enzyme-substrate binding. Binding using affinity can be mentioned. When the peptide of the present invention and the substance for transporting to the nucleus have essentially no binding ability, a functional domain having these binding ability may be newly added and used.
- the target cells for transporting a substance using the peptide of the present invention as a carrier are not particularly limited, and various cells can be used depending on the purpose of using the peptide of the present invention.
- the target cell can be, for example, a cell in a living body or a cultured cell in vitro. These cells can be, for example, animal cells including humans, plant cells, and microbial cells.
- the present invention also relates to a DNA encoding the peptide of the present invention.
- the DNA of the present invention is not particularly limited as long as it can encode the peptide of the present invention, and includes, for example, cDNA, genomic DNA, and synthetic MA.
- the DNA of the present invention may be, for example, a human fetal brain-derived cDNA library or a genomic DNA library using, as a probe, a DNA consisting of all or a part of the nucleotide sequence of SEQ ID NOS: 22 to 42 and 92 to 100. One can be prepared by screening one.
- fflRNA, cDNA, or genomic DNA derived from human fetal brain is used as a primer as an oligonucleotide that specifically hybridizes to MA consisting of the nucleotide sequences of SEQ ID NOS: 22 to 42 and 92 to 100. It can also be prepared by a polymerase chain reaction.
- the DNA of the present invention can be used, for example, for producing the peptide of the present invention.
- the production of the peptide of the present invention is generally carried out by inserting the DNA of the present invention into an appropriate vector, introducing it into an appropriate host cell, culturing the obtained transformed cell, The purification is performed by purifying the recombinant protein expressed in the recombinant cell.
- a conventional general expression system can be used for expression of the recombinant peptide.
- Escherichia coli, Bacillus subtilis, and yeast In vitro expression systems using insect cells, plant cells, animal cells, etc., as well as test tubes using cell extracts such as Escherichia coli, wheat germ, or rabbit reticulosite.
- Recombinant peptides expressed in this way can be used, for example, by combining conventional chromatography steps such as ion exchange, gel filtration, partitioning, and affinity, or by using appropriate fillers. It can be purified to high purity by using HPLC or the like.
- the peptide of the present invention can be used as a "nuclear transport indicator" if it can be visually recognized by modification with an appropriate substance. That is, by introducing such a modified peptide into a cell, it becomes possible to monitor the mass transfer from the cytoplasm to the nucleus in real time.
- the peptide may be directly labeled with a fluorescent dye or the like, or a fusion peptide with a fluorescent protein such as EGFP may be prepared.
- a “nuclear transport indicator” can be applied, for example, to a screening system for developing a nuclear transport inhibitor or the like.
- Figure 1 shows the plasmid “pLexAD”.
- Figure 2 shows the plasmid “pLexADrev”.
- FIG. 3 shows the plasmid "pRSlF”.
- FIG. 4 shows the plasmid “pRS3F”.
- FIG. 5 shows the nuclear translocation ability of a transcription factor used for fusion with a test peptide.
- FIG. 6 shows the nuclear translocation ability of a transcription factor fused with a test peptide.
- FIG. 7 shows the plasmid “pNS”.
- FIG. 8 is a micrograph showing the result of detecting the nuclear translocation activity of 21 genes isolated by the NTT method.
- the numbers in the figure correspond to the order of the gene clones in Tables 1 and 2 (the first clone in Table 1 is 1 and the last clone in Table 2 is 21).
- the Taq polymerase used was “TaKaRa Ex Taqj (TaKaRa)” and the reaction conditions were in accordance with the product manual.
- the amplified DNA fragment was purified by ethanol precipitation and digested with the restriction enzymes EcoRI and Ncol. After that, 6% polyacrylamide gel electrophoresis was performed, and the target DNA fragment was excised from the gel and recovered by electroelution.
- the nuclear export signal (SEQ ID NO: 47) of the HIV Rev protein was synthesized as follows, and inserted into the Hpal site near the N-terminus of the LexA protein encoded by “pLexAD”. "NU9” (SEQ ID NO: 48) as the sense strand, "NU10" as the antisense strand
- Plasmid ⁇ pRSlF '' which has CEN / ARS region for replication protein expression at the origin of replication, and LexA protein inserted with NES and GAL4 transcriptional activity Of pRS3F, a plasmid that has a CEN / ARS region at the origin of replication for expressing a fusion protein with an activation domain
- a fusion protein between a normal LexA protein that does not insert a nuclear export signal (NES) and a GAL4 transcription activation domain and a fusion protein between a LexA protein that has NES inserted at the N-terminus and a GAL4 transcription activation domain
- NES nuclear export signal
- a fusion protein between a LexA protein that has NES inserted at the N-terminus and a GAL4 transcription activation domain eg, The nucleotide sequence including the amino acid sequence of the fusion protein is shown in SEQ ID NO: 50
- the minimum unit required for expression in yeast is “pLexAD” in the former case and “pLexAD” in the latter case.
- a DNA fragment of about 1.7 kb obtained by digesting pLexADrevj with Sphl This expression unit contains the ADH1 motor region, the coding region of the expressed protein, the multiple cloning site, the ADH1
- the plasmid “pRS413” manufactured by STRATAGENE
- yeast shuttle vector 1, CEN / ARS origin was prepared in advance.
- a Pseudomonas aeruginosa branched-chain amino acid binding protein ('BraC) from which the secretory signal recognized to be localized in the cytoplasm has been removed (base sequence including the amino acid sequence of the protein is also shown).
- 'BraC Pseudomonas aeruginosa branched-chain amino acid binding protein
- PRS3FN was similarly constructed. The nucleotide sequence was confirmed to confirm that the target fragment was inserted correctly.
- nuclear fragmentation is achieved by in-frame fusion of a DNA fragment encoding a peptide to the C-terminus of the transcription factor encoded by pRS3F and expression in yeast.
- the presence or absence of the function could be easily detected by checking the expression of the reporter gene.
- PRS3F was improved. There are three improvements: (1) The EcoRI site at the junction between LexA and GAL4AD has been removed. (2) A new EcoRI site was introduced at the multi-cloning site. (3) Unnecessary regions derived from “pRS413” were removed and minimized as much as possible.
- This pLexADrev-dE was digested with the restriction enzyme Sphl, and the obtained DNA fragment containing the ADH1 expression unit of about 1.7 kb was subcloned into the Sphl site of the universal plasmid pUC19, and the plasmid ⁇ pULexADrev-dE '' And Next, a synthetic phosphoric acid having an EcoRI site between the Nhel site and the Ncol site of “pULexADrev-dE”, “NU28” (SEQ ID NO: 58) as the sense strand, and “ ⁇ 29 ⁇ ” as the antisense strand (SEQ ID NO: 59) was inserted to give a plasmid “pULexADrev-E”.
- pRS413 was digested with Drall and PvuII to remove the MA fragment containing the 757 bp multicloning site, and a synthetic linker with Sphl site and “NU25” as the sense strand (SEQ ID NO: 60), insert “Book 26” (SEQ ID NO: 61) as the antisense strand, and add plasmid
- PRS-S The DM fragment containing the 1.7 kb ADH1 expression unit obtained by Sphl digestion of the above-mentioned “pULexADrev-E” was inserted into the Sphl site of this “pRS-S” to prepare a cDNA library.
- a vector-pNS (Fig. 7) was constructed (the direction of transcription by ADH1 is the same as the direction of transcription by HIS3).
- mRNA is a protocol attached to human cultured cells NT2 progenitor cells (Stratagene)
- cDNA library was prepared using a part (3 ⁇ g) of the cDNA library using a commercially available cDNA synthesis kit (Pharmacia). Specifically, cDNA synthesis was performed using oligo (dT) 12-18 primers and inserted into the EcoRI / Notl site of the NS vector. The introduction of cMA was made unidirectional by using Directional Cloning Toolbox (Pharmacia).
- E. coli ElectroMAX DH10B Cel ls manufactured by GibcoBRL
- the obtained transformant was cultured on an LB agar medium containing ampicillin (100 g / ml) at 30 ° C. for 16 hours, and after collecting cells, a plasmid was prepared (QIAGEN axi kit manufactured by QIAGEN).
- transform EGY48 strain by a conventional method (CL0NTECH3 ⁇ 4, Yeast Protocols Handbook, PT3024-1: 17-20). Converted. After culturing at 30 ° C for 3 to 7 days on SD agar medium (-His / -Leu) for the purpose of selecting clones by expressing the reporter gene LEU2, about 1000 positive clones were obtained.
- a part (12 clones) of the positive clones thus obtained was subjected to nucleotide sequence determination of the cDNA fragment inserted therein.
- template DNA was first prepared from each clone by colony PCR.
- template DNA was obtained by desalting and removing unreacted primer with Microcon-100 (manufactured by Millipore). Using a part (100 to 200 ng) of the template thus obtained, the nucleotide sequence was determined by a method according to the product manual of ABI.
- a fusion protein expression library was prepared by amplifying a commercially available human fetal brain cDNA library (SUPERSCRIPT library 1 manufactured by GibcoBRL) according to the attached protocol and then purifying a plasmid purified by QIAGEN.
- the plasmid containing the cDNA fragment as an insert was purified using the method described above.
- a DNA fragment excised from a part (30 zg) using two kinds of restriction enzymes EcoR I and Not I was selected by agarose electrophoresis of 0.8 into cDNA of 0.7 kb to 4 kb in length. Purified.
- the cDNA fragment thus obtained is inserted into the EcoRI / Notl site of the pNS vector described above to prepare a fusion protein expression library, and a part of the library is used by a conventional method (new cell engineering experiment protocol).
- Escherichia coli (ElectroMAX DH10B Cels, manufactured by GibcoBRL) was transformed by electroporation (Gene Pulser, manufactured by BIORAD) according to Shujunsha, 114-115).
- the obtained transformant was cultured on an LB agar medium containing ambicillin (100 / g / ml) at 30 ° C for 16 hours, and after collecting the cells, a plasmid was prepared (QIAGEN Maxi kit manufactured by QIAGEN).
- EGY48 strain was transformed by a conventional method (CLONTECH, Yeast Protocols Handbook, PT3024-1: 17-20) using 60 ⁇ g of the plasmid of the prepared fusion protein expression library. After culturing at 30 ° C for 3-7 days on SD agar medium (-His / -Leu) for the purpose of selecting clones based on the expression of the repo overnight gene LEU2, about 1000 positive clones were obtained.
- CLONTECH Yeast Protocols Handbook, PT3024-1: 17-20
- the nucleotide sequence of the cDNA fragment inserted into the vector was determined.
- template DNA was prepared from each clone by colony PCR.
- template DNA was obtained by desalting and removing unreacted primers using Microcon-100 (manufactured by Millipore). Using a part (100 to 200 ng) of the template thus obtained, a partial nucleotide sequence was determined by a method according to the ABI product manual.
- the base sequence of 489 clones is available from the National Center for Biotechnology Information (NCBI), Basic BLAST, a public database.
- the base sequence was determined for 21 of 172 genes which are candidates for novel nuclear localization proteins.
- the nucleotide sequence was determined in accordance with the product manual of ABI, and appropriate primers were designed and primer-walking was performed. Structural features were also analyzed based on the determined sequences. Specifically, (1) A region in which four or more basic amino acids (lysine or arginine) appear within a class of six consecutive amino acids is defined as “putative nuclear translocation signal (NLS)” It was examined whether such an NLS exists in the amino acid sequence predicted from the above. (2) We also examined the presence of known typical motif structures (eg, Zinc Finger and Leucine Zipper), repeat regions, or certain amino acid-rich regions in the amino acid sequence.
- NLS putative nuclear translocation signal
- Nuclear localization was predicted using “PS0RT,” a program that predicts the intracellular localization of proteins.
- the coil structure in the protein was predicted using “Coils” (Lupas, A. Methods Enzymol., 1996, 266: 513-525), a program for predicting the coiled-coil structure. The results are shown in Tables 1 and 2.
- clones hfb030, hfb044, hfb060, hfb066, hfblOl, and hfb341 were isolated in the same manner as in Example 5.
- the full length cDNA of the NTT clone was obtained using the GENE TRPPER TM cDNA Positive Selection System (Gibco BRL) with the Superscript TM Human Fetal Brain cDNA Library (Gibco BRL) as the source.
- GENE TRPPER The principle of GENE TRPPER is to hybridize a single-stranded cDNA library with a specific oligonucleotide of a target cDNA and to separate and obtain a target cDNA using a biotin-avidin bond.
- Kits and reagents used are shown below.
- ElectroMAX DH10B TM Cells (Gibco BRL)
- Oligonucleotides A, B, C, D sequences are described below
- Hybond TM -N + (Amersham Pharmacia Biotech)
- Superscript TM Human Fetal Brain cDNA Library (Gibco BRL) was used as a source for obtaining full-length cDNA.
- a nick was generated in the sense strand of the fl intergenic region present on the library vector pCMV SP0RT2 by Gene I I, and the same strand was digested by Exonuclease I II.
- the Superscript TM Human Fetal Brain cDNA Library has a unidirectional cDNA inserted into pCMV SP0RT2. Since the fl intergenic region and the sense strand of the inserted cDNA are on the same strand, the sense strand is digested by Gene II and Exonuclease II treatment, leaving only the antisense strand as a single strand.
- a cDNA library single-stranded to only the antisense strand was obtained.
- the confirmation of single-strand formation was performed by agarose electrophoresis in comparison with an untreated cDNA library and a Gene II-treated cDNA library.
- Oligonucleotides A, B, and C specific to the nucleotide sequence of the cDNA fragment cloned by the NTT method were designed. CDNA cloned by NTT method (5, one pass) The nucleotide sequences of the fragments hfb030, hfb044, hfb060, hfb066, hfblOK and hfb341 are shown in SEQ ID NOs: 66 to 71 in order (Tables 3 and 4). The oligonucleotides A, B, and C designed for each clone are shown in Tables 3 and 4 (SEQ ID NOs: 72 to 89).
- Oligonucleotide A is shown with a solid underline
- oligonucleotide B is shown with a double underline
- oligonucleotide C is shown with a dotted underline.
- oligonucleotide C is an antisense oligonucleotide, it is an annealing sequence in the cDNA sequence.
- Oligonucleotide B (HFB030-S2) (SEQ ID NO: 73) rrTAACCGGCTGTTTTATGC
- Oligonucleotide C (HFB030-A1) (SEQ ID NO: 74) CACTCCnACTncCATCTCnCCAGTGCC
- Oligonucleotide B (HFB04-S2) (SEQ ID NO: 76) GTCnCACCTCTCCACAACC
- Oligonucleotide C (HFB0 "-A1) (SEQ ID NO: 77) GCCTGHGGAGGTAnTGGAGTAncnGC
- rmr ⁇ TR (3 ⁇ 4GGnc ⁇ GGAGCGCTTGGACCCCGGCHCT (mCGCGTCAGGAGAAAGGAGCACTGGCTTTGCnrCAT CAGGCCAAAGATGCCTnCTnGGGAATACG CAGTCCGAAGAAGACACCTCCTCGGAAGTCGGCATCTCTCTCCAACC TGCATTCTTTGGATCGATCAACCCGGGAGGTGGAGCTGGGCTT ⁇ I ⁇ ; ⁇ ( ⁇ pJ ⁇ ⁇ p.g.TGGCAGGGCAA AGCCT ⁇ GTTTGAAAATGGCCAGTGGATAGCAGAGACAGGGGnAGTGGCGGTGTGGACCGGAGGGAAGnCAGCGCCT TCGCAGGCGGMCCAGCAGnGGAGG GAl ⁇ CMTCTCnKGGCTGAMGTGGACATCTTAnAGACATGCnTCAG AGTCCACTGCCGAATCCCACnAATGGAGAAGGAACTGGATGAACTGAGGATC oligonucleotide A (HFB06
- Oligonucleotide B (HFB060-S2) (SEQ ID NO: 79) CCAAAGATGCC1TTCTTTGG
- Oligonucleotide C (HFB060-A4) (SEQ ID NO: 80) GGTTCATAGTCGGGGATCCGTAHCC [Table 4]
- A66CCGC6C6CCA ( ⁇ 6nCCG6CAGnCCGnATMGGACAT ( »CAGGTCCCCGGGAGGCCCTGGACCAGCTCCGAGAG CTGTGTCACCAGTGGCTACAGCCT GGCACGCTCCAAGGAGCAGATCCTGGAGCTGCTGGTGCTGGAGCAGnCCTMG TGCACTGCCTGTGAAACTCCCGACATGGGTGGAATCGCNGCACCCAAAAAATGCCAANAAGTGGTGGCCCTGGTAAAAGG TGTGACCTGGAnCTGAAGAAGAAGTACnCCTGCAGGANAACTGCCNAGGGCACCNCTGCTGCTCAAGGTCNCTGCCCN CAGGAAGAAAAACANAAG
- Oligonucleotide A (HFB101-S1) (SEQ ID NO: S: 8) TTGA6GTCCTCACACTGAACC Oligonucleotide B (HFB101-S2) (SEQ ID NO: 85) TCCGHATAAGGACATGACAGG Oligonucleotide C (HFB101-A1) (K column number: 86) CACTCAGGCHCCATCnCAGCATATAGGG hfb (Number: 71)
- Oligonucleotide A (HFB341-S1) (SEQ ID NO: 87) CTAHCCCncCCAAAAAAGC Oligonucleotide B (HFB341-S2) (SEQ ID NO: 88) CCCATTCCGTTTGnGATCC Oligonucleotide C (HFB341-A1) (SEQ ID NO: 89) CGTCTCACGACACAGTGGACAAGTGG pCMVsp-S3) (SEQ ID NO: 90); CGCTGTTTTGACCTCCATAGAAGACACC (common) Cloning site of cloning vector pCW SP0RT2 Upper row (SEQ ID NO: 91)
- Oligonucleotides ⁇ and ⁇ were sense strands, and oligonucleotide C was an antisense strand. Oligonucleotide ⁇ was designed for hybridization and B was designed for repair to increase stringency. Oligonucleotide C was used for colony hybridization and colony PCR.
- a sense strand oligonucleotide D specific to the upstream of the cDNA insertion site of pCMV SP0RT2 was designed.
- the sequence of oligonucleotide D is shown in SEQ ID NO: 90, and the sequence upstream of the cMA insertion site of pCMV SP0RT2 corresponding to oligonucleotide D is shown in SEQ ID NO: 91.
- Oligonucleotide synthesis was relied on Toagosei.
- Oligonucleotide A was added with biotin-14-dCTP to the 3 'end using terminal deoxynucleotidyl transferase to check for the presence of c- biotin labeled with biotin, by acrylamide electrophoresis.
- the single-stranded cDNA library in (2) and the oligonucleotide A that had been biotinylated in (4) were hybridized. Unhybridized cDNA was isolated by adding streptavidin-paramagnetic beads to the hybridization solution, fixing to a magnetic stand and removing the supernatant. After washing several times with the washing buffer attached to the kit, the target cDNA library hybridized with the elution buffer was eluted.
- the eluted cDNA was repaired into a double-stranded cDNA library using dNTPs and a repair enzyme using oligonucleotide B as a primer.
- the repaired double-stranded cDNA library was electroporated into ElectroMAX DHlOBTM Cells (Gibco BRL), and then spread on an agar medium to form colonies.
- the presence or absence of the target cDNA was determined by (7) colony hybridization or (8) colony PCR. (7) Colony hybridization
- the colonies formed on the agar medium were transferred to a nylon membrane Hybond TM -N + (manufactured by Amersham Pharmacia Biotech), and colony hybridization was performed using DIG-labeled oligonucleotide C.
- DIG labeling of oligonucleotides was performed using a DIG Oligonucleotide Tailing Kit (manufactured by BOEHRINGER MANNHEIM), and hybridization was performed using DIG Easy Hyb (manufactured by BOEHRINGER MANNHEIM).
- Detection was performed using a DIG Wash and Block Buffer Set (manufactured by BOEHRINGER MANNHEIM) and a DIG Nucleic Acid Detection Kit (manufactured by BOEHRINGER MAHEIM).
- a colony formed on the agar medium was subjected to PCR using KOD Dash (manufactured by T0Y0B0) as type I. Oligonucleotide C specific to the target cDNA and oligonucleotide D specific to the cloning vector were used as primers.
- the PCR reaction solution was subjected to agarose electrophoresis to confirm the presence or absence of a band.
- a colony determined to have the target cDNA according to (7) or (8) was cultured, a plasmid was extracted, and the nucleotide sequence was determined.
- the extraction of plasmid was performed using QIAprep Spin Miniprep Kit (manufactured by QIAGEN).
- the nucleotide sequence can be determined using BigDye Terminator Cycle Sequencing FS Ready Reaction Kit (Perkin-Elmer Applied Biosystems) or dRhodamine Terminator Cycle Sequencing FS Ready Reaction Kit
- Total length 3041 bp, putative translation region 48-2735 hfb044-2 (total length 3060 bp, putative translation region 69-2756), hfb060-1, hfb060-2, hfb066 (total length is estimated to be part of the translation region), hfblOl-1 (total length 2565 bp, putative translation region 474-2120), hfblOl-2 (total length 2694 bp, putative)
- the nucleotide sequences of translation region 402-2267) and hfb341 (total length 6193 bp, putative translation region 466-3873) are shown in SEQ ID NOs: 92 to 100, respectively.
- a peptide having a nuclear transport activity is provided.
- the peptide of the present invention is useful as a carrier for transporting a desired substance to be transferred to the nucleus into the nucleus. It can also be used as a nuclear transport indicator if it can be visually recognized by modifying it with an appropriate substance.
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EP99923926A EP1085024A1 (en) | 1998-06-05 | 1999-06-04 | Peptides having nuclear transport activity |
CA002330548A CA2330548A1 (en) | 1998-06-05 | 1999-06-04 | Peptides having nuclear transport activity |
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JP11107262A JP2000050882A (ja) | 1998-06-05 | 1999-04-14 | 核移行活性を有するペプチド |
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CA (1) | CA2330548A1 (ja) |
WO (1) | WO1999064455A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2357084A (en) * | 1999-12-06 | 2001-06-13 | Amersham Pharm Biotech Uk Ltd | A hydrophobic carrier peptide |
FR2811681A1 (fr) * | 2000-07-17 | 2002-01-18 | Commissariat Energie Atomique | Procede de criblage de la translocation nucleo-cytoplasmique de proteines sous l'effet d'un stimulus, d'elements y etant impliques et kits de mise en oeuvre |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5021143B2 (ja) | 2000-09-14 | 2012-09-05 | 株式会社リバース・プロテオミクス研究所 | 医療および他の用途に用いる化合物の発見および創製のための方法 |
AUPR121300A0 (en) * | 2000-11-03 | 2000-11-30 | Monash University | Cell division autoantigen (CDA) polypeptides, gene sequences and uses thereof |
JP2002325573A (ja) * | 2001-04-27 | 2002-11-12 | Japan Science & Technology Corp | ベクター |
GB0125784D0 (en) * | 2001-10-26 | 2001-12-19 | Syngenta Ltd | Novel expression system |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09322779A (ja) * | 1996-04-01 | 1997-12-16 | Nippon Steel Corp | Dna結合性タンパク質のスクリーニング法およびそれに用いられるプラスミド並びにdna結合性タンパク質 |
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1999
- 1999-04-14 JP JP11107262A patent/JP2000050882A/ja active Pending
- 1999-06-04 WO PCT/JP1999/003015 patent/WO1999064455A1/ja not_active Application Discontinuation
- 1999-06-04 EP EP99923926A patent/EP1085024A1/en not_active Withdrawn
- 1999-06-04 CA CA002330548A patent/CA2330548A1/en not_active Abandoned
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09322779A (ja) * | 1996-04-01 | 1997-12-16 | Nippon Steel Corp | Dna結合性タンパク質のスクリーニング法およびそれに用いられるプラスミド並びにdna結合性タンパク質 |
Non-Patent Citations (3)
Title |
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GENBANK, Accession No. AA014446, 21 January 1997, MARRA M. et al., "mh09e05.rl Soares mouse placenta 4NbMP13.5 14.5 Mus musculus cDNA clone IMAGE:442016 5', mRNA sequence". * |
GENBANK, Accession No. N40788, 22 January 1996, HILLIER L. et al., "yw62b06.rl Soares_placenta_8to9weeks_2NbHP8to9W Homo Sapiens cDNA clone IMAGE:256787 5', mRNA sequence". * |
TAKEDA S., ET AL.: "ISOLATION AND MAPPING OF KARYOPHERIN A3 (KPNA3), A HUMAN GENE THAT IS HIGHLY HOMOLOGOUS TO GENES ENCODING XENOPUS IMPORTIN, YEAST SRP1AND HUMAN RCH1.", CYTOGENETICS AND CELL GENETICS., S. KARGER AG, CH, vol. 76., 1 January 1997 (1997-01-01), CH, pages 87 - 93., XP002922753, ISSN: 0301-0171 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2357084A (en) * | 1999-12-06 | 2001-06-13 | Amersham Pharm Biotech Uk Ltd | A hydrophobic carrier peptide |
FR2811681A1 (fr) * | 2000-07-17 | 2002-01-18 | Commissariat Energie Atomique | Procede de criblage de la translocation nucleo-cytoplasmique de proteines sous l'effet d'un stimulus, d'elements y etant impliques et kits de mise en oeuvre |
Also Published As
Publication number | Publication date |
---|---|
CA2330548A1 (en) | 1999-12-16 |
JP2000050882A (ja) | 2000-02-22 |
EP1085024A1 (en) | 2001-03-21 |
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