JP6301258B2 - 免疫染色試料を調製するための方法および構成物 - Google Patents
免疫染色試料を調製するための方法および構成物 Download PDFInfo
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- JP6301258B2 JP6301258B2 JP2014540113A JP2014540113A JP6301258B2 JP 6301258 B2 JP6301258 B2 JP 6301258B2 JP 2014540113 A JP2014540113 A JP 2014540113A JP 2014540113 A JP2014540113 A JP 2014540113A JP 6301258 B2 JP6301258 B2 JP 6301258B2
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/30—Staining; Impregnating ; Fixation; Dehydration; Multistep processes for preparing samples of tissue, cell or nucleic acid material and the like for analysis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
- G01N33/569—Immunoassay; Biospecific binding assay; Materials therefor for microorganisms, e.g. protozoa, bacteria, viruses
- G01N33/56966—Animal cells
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
- G01N33/574—Immunoassay; Biospecific binding assay; Materials therefor for cancer
- G01N33/57484—Immunoassay; Biospecific binding assay; Materials therefor for cancer involving compounds serving as markers for tumor, cancer, neoplasia, e.g. cellular determinants, receptors, heat shock/stress proteins, A-protein, oligosaccharides, metabolites
- G01N33/57492—Immunoassay; Biospecific binding assay; Materials therefor for cancer involving compounds serving as markers for tumor, cancer, neoplasia, e.g. cellular determinants, receptors, heat shock/stress proteins, A-protein, oligosaccharides, metabolites involving compounds localized on the membrane of tumor or cancer cells
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Immunology (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Cell Biology (AREA)
- General Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Hematology (AREA)
- Pathology (AREA)
- General Physics & Mathematics (AREA)
- Urology & Nephrology (AREA)
- Biochemistry (AREA)
- Analytical Chemistry (AREA)
- Medicinal Chemistry (AREA)
- Biotechnology (AREA)
- Food Science & Technology (AREA)
- Microbiology (AREA)
- Oncology (AREA)
- Tropical Medicine & Parasitology (AREA)
- Virology (AREA)
- Zoology (AREA)
- Hospice & Palliative Care (AREA)
- Investigating Or Analysing Biological Materials (AREA)
- Sampling And Sample Adjustment (AREA)
- Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
Description
1.a)界面活性剤を含む第1の溶液と、b)カオトロピック剤を含む第2の溶液とを含むキット。
a)試料を界面活性剤を含む第1の溶液に接触させるステップと、
b)試料をカオトロピック剤を含む第2の溶液に接触させるステップと
を含む方法。
歴史的に、組織を主体にした大部分の抗原賦活化(AR)技法は、高熱、約100℃および/または種々の溶液を用いる処理を利用してきた。SurePath(登録商標)(TriPath Imaging、Inc.)の子宮頸部細胞診試料中の抗原MCM2およびMCM7を検出するためのAR手順を、全体が引用により本明細書に組込まれる米国特許第7,595,380号(27C5.6および26H6.19抗MCM2抗体)および第7,632,498号(2E6.2抗MCM7抗体)に開示された3種の抗体のカクテルを使用して、細胞形態を維持するために、複数のAR溶液およびインキュベーション温度を調べることにより、細胞診検体の適当な免疫染色を確保しつつ、本明細書において以下に記載したように最適化した。
・酸および塩基(n=4) 実質的免疫活性は観察されない。
・有機溶媒/その他(n=9) 実質的免疫活性は観察されない。
・緩衝剤(例えばEDTA、クエン酸塩)およびカオトロピック塩(n=15) 強いカオトロピック塩、特に過塩素酸リチウム(LiClO4)の単独、および幾つかの界面活性剤との組合せが、形態を保存して強い免疫活性を示した。他のものは免疫活性の限られた上昇を示した。
・界面活性剤(例えばTween20、Brij35)(n=9) 大部分は免疫染色における実質的増大を示さなかった。ドデシル硫酸ナトリウム(SDS)およびノニルフェノキシポリエトキシエタノール(NP−40)は、単独で、および幾つかのカオトロピック塩溶液の活性との組合せで、免疫染色において、中程度の上昇を示した。
この試験では、第2のインキュベーションステップのために2種の異なったカオトロピック塩溶液を使用する2ステップ前処理法を、互いにおよび高熱を利用する前処理方法(すなわち、例1に記載したスチーマー法)と比較した。
これらの実験で、SurePath(登録商標)の子宮頸部細胞診検体を、内部で開発したPrepStain Plus(登録商標)Instrument(Tripath Imaging、Inc.)を使用して加工処理し、染色のために沈着させた。細胞沈着に続いて、特別にデザインしたスライド加熱トレイ上でスライドを50℃に加熱してAR溶液1(0.1%のSDS)を適用し、スライドを50℃で19分間インキュベートした。細胞を標準的トリス緩衝生理食塩水(TBS)溶液で洗浄した。次にAR溶液2(3M LiC1O4/0.1%NP−40)を加えて、細胞をさらに19分50℃でインキュベートした。このインキュベーションに続いて、スライドを再びTBSで洗浄し、免疫染色のために加工処理して、PrepStain Plus(登録商標)InstrumentでPAP対比染色した。次にスライドのカバーを外して細胞学者および/または細胞病理学者が検査した。抗Ki67または抗p16抗体で免疫染色した子宮頸部細胞診試料の代表的結果を、図1および3に、それぞれ示す。SiHa細胞を同様に処理して抗Ki67(図2)または抗p16抗体で免疫染色した(図4)。
扁桃および子宮頸部組織試料を10%ホルムアルデヒド中で少なくとも24時間固定して、次にパラフィン中に包埋した後切片にした。組織切片を溶液1(0.1%のSDS)と50℃で19分間インキュベートした。切片をTBSで洗浄し、次に溶液2(3MのLiClO4/0.1%NP−40)中において50℃で19分間インキュベートした。このインキュベーションに続いて、組織切片を再びTBSで洗浄し、3種抗体カクテル(27C5.6および26H6.19抗MCM2抗体および2E6.2抗MCM7抗体)を用いる免疫染色およびPrepStain Plus(登録商標)Instrument上のPAP対比染色のために加工処理した。免疫染色した代表的な扁桃組織および子宮頸部組織を図5および6に、それぞれ示す。これらの結果は、本明細書において開示した2ステップ前処理プロセスが、組織試料からの抗原を効果的に回復させることができて、効果的な免疫染色が生じることを示す。
SurePath(登録商標)の低度扁平上皮内病変(LSIL)および高度扁平上皮内病変(HSIL)子宮頸部細胞診検体を、抗原賦活化のために、例3で記載したように試料を前処理溶液1(0.1%のSDS)中で19分間インキュベートし、続いてTBSで洗浄し、前処理溶液2(3MのLiClO4/0.1%のSDS)中で19分間インキュベートすることにより加工処理した。しかしながら、例3で記載した実験と対照的に、2種の前処理溶液でのインキュベーションステップ中、外部からの加熱は試料に適用しなかった。それ故、前処理溶液1および2を用いるインキュベーションステップは、室温で実施した。
Claims (29)
- a)アニオン性界面活性剤を含む第1の水溶液と、
b)カオトロピック塩および非イオン性界面活性剤または双性イオン性界面活性剤の少なくとも一方を含む第2の水溶液と、
c)免疫学的染色のための細胞診試料の調製における使用説明書と
を含むキット。 - d)前記細胞診試料中の抗原に特異的に結合する抗体、
e)ペルオキシダーゼブロッキング剤;タンパク質ブロッキング剤;抗体の前記抗原に対する結合を検出するための化学物質;対比染色剤;ブルーイング剤、
f)陽性対照試料、および/または、
g)パパニコロウ(Pap)染色のための試薬
をさらに含む、請求項1に記載のキット。 - 前記アニオン性界面活性剤が、ドデシル硫酸ナトリウム(SDS)である、請求項2に記載のキット。
- 前記第1の水溶液が、約0.1%のSDSを含む、請求項2に記載のキット。
- 前記カオトロピック塩が、チオシアン酸塩または過塩素酸塩である、請求項2に記載のキット。
- 前記抗原が、核抗原である、請求項2に記載のキット。
- 前記対比染色剤がヘマトキシリンを含む、請求項2に記載のキット。
- 前記ブルーイング剤が、トリス緩衝生理食塩水(pH7.4)、Tween−20およびアジ化ナトリウムを含む溶液を含む、請求項2に記載のキット。
- 前記パパニコロウ(Pap)染色のための試薬が、EA50およびオレンジGを含む、請求項2に記載のキット。
- 前記チオシアン酸塩が、チオシアン酸グアニジンであり、または、前記過塩素酸塩が、過塩素酸リチウムである、請求項5に記載のキット。
- 前記第2の水溶液が、約3Mのチオシアン酸グアニジンまたは過塩素酸リチウムを含む、請求項2に記載のキット。
- 前記非イオン性界面活性剤が、ノニルフェノキシポリエトキシエタノール(NP−40)である、請求項2に記載のキット。
- 前記第2の水溶液が、約0.1%のNP−40を含む、請求項2に記載のキット。
- 前記抗原が、MCM2、MCM7、p16、およびKi67からなる群から選択される、請求項2に記載のキット。
- 抗体結合を検出するための前記化学物質が、色原体と、標識されたポリマーにコンジュゲートされた二次抗体とを含み、色原体は3’,3’−ジアミノベンジジンを含み、標識されたポリマーはデキストランポリマーにコンジュゲートされた西洋ワサビペルオキシダーゼを含む、請求項2に記載のキット。
- 免疫学的染色のための細胞診試料を調製する方法であって、
a)細胞診試料をアニオン性界面活性剤を含む第1の水溶液に接触させるステップと、
b)前記細胞診試料をカオトロピック塩および非イオン性界面活性剤または双性イオン性界面活性剤の少なくとも一方を含む第2の水溶液に接触させるステップと
を含む方法。 - 前記方法が、
前記カオトロピック塩が好ましくはチオシアン酸塩または過塩素酸塩であり、
前記試料を、前記第1の水溶液中において室温でインキュベートするか、または、前記試料を、前記第1の水溶液と共に約50℃でインキュベートし、
前記試料を、前記第2の水溶液と共に少なくとも1分間インキュベートし、
前記試料を、前記第2の水溶液中において室温でインキュベートするか、または、前記試料を、前記第2の水溶液と共に約50℃でインキュベートし、
前記試料を、第1の水溶液と接触させた後、第2の水溶液と接触させる前に洗浄するものであり、かつ、
前記方法が、抗体を使用して前記細胞診試料中の抗原を検出するステップをさらに含み、ここで、
前記細胞診試料が、子宮頸部の試料であり、
前記細胞診試料が、細胞または組織を含み、
前記方法が、前記細胞診試料の形態学的分析を実行するステップをさらに含み、および/または、
前記方法が、細胞診試料をパパニコロウ(Pap)染色するステップをさらに含む、
請求項16に記載の方法。 - 前記アニオン性界面活性剤が、ドデシル硫酸ナトリウム(SDS)である、請求項17に記載の方法。
- 前記第1の水溶液が、約0.1%のSDSを含む、請求項17に記載の方法。
- 前記カオトロピック塩が、チオシアン酸塩または過塩素酸塩である、請求項17に記載の方法。
- 前記細胞診試料を、前記第1の水溶液と共に約19分間インキュベートする、請求項17に記載の方法。
- 前記細胞診試料を、前記第2の水溶液と共に約19分間インキュベートする、請求項17に記載の方法。
- 前記細胞診試料を、緩衝生理食塩水で洗浄する、請求項17に記載の方法。
- 前記チオシアン酸塩が、チオシアン酸グアニジンであり、または、前記過塩素酸塩が、過塩素酸リチウムである、請求項20に記載の方法。
- 前記第2の水溶液が、約3Mのチオシアン酸グアニジンまたは過塩素酸リチウムを含む、請求項20に記載の方法。
- 前記非イオン性界面活性剤が、ノニルフェノキシポリエトキシエタノール(NP−40)である、請求項17に記載の方法。
- 前記第2の水溶液が、約0.1%のNP−40を含む、請求項17に記載の方法。
- 前記緩衝生理食塩水が、トリス緩衝生理食塩水である、請求項23に記載の方法。
- 前記抗原が、MCM2、MCM7、p16、およびKi67からなる群から選択される、請求項17に記載の方法。
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