JP6345610B2 - インサイツハイブリダイゼーションを使用した生物学試料の遺伝子コピー数のスコアリング法 - Google Patents
インサイツハイブリダイゼーションを使用した生物学試料の遺伝子コピー数のスコアリング法 Download PDFInfo
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Description
本明細書では、2009年5月29日に出願した米国仮出願番号第61/217316号の優先権を主張する。その全体がここに援用される。
本開示は、癌の分野、特に癌患者の予後を決定するための方法に関する。本開示は、インサイツハイブリダイゼーションで検出される遺伝子コピー数のスコアリング法にも関する。
CISH:発色インサイツハイブリダイゼーション
FISH:蛍光インサイツハイブリダイゼーション
IGF1R:インスリン様成長因子1受容体
IHC:免疫組織化学
ISH:インサイツハイブリダイゼーション
NSCLC:非小細胞肺癌
OS:全生存
PFS:無増悪生存
SISH:銀インサイツハイブリダイゼーション
TMA:組織マイクロアレイ
他に説明なき場合、本明細書で使用する全ての技術的及び科学的用語は、開示される発明が属す当業者により一般的に理解されるのと同じ意味を持つ。単数用語の“a,”“an,”及び“the”は文中で明確に別途示されない限り複数形の指示対象を含む。同様に、単語“or”は文中で明確に別途示されない限り“and”を含むことを意図している。それゆえ、「A又はBを含む(“comprising A or B”)」は「Aを含む(“including A”)」又は「Bを含む(“including B”)」又は「A及びBを含む(“including A and B”)」を意味する。
本明細書では、腫瘍性疾患を持つ患者から得た生物学試料のIGF1R遺伝子コピー数を決定することで、腫瘍性疾患(肺癌、例えば、NSCLC等)の予後を決定し、又は予測するための方法が提供される。本開示方法は、生物学試料(腫瘍試料、例えば、NSCLC試料)のIGF1R遺伝子のコピー数を決定することを含む。特定の例においては、IGF1Rコピー数の増加は、患者の腫瘍性疾患の良好な予後を予測する。他の例では、IGF1Rコピー数の実質的な無変化又は減少は、患者の腫瘍性疾患の予後不良を予測する。
典型的な試料は、限定しないが、血液塗抹、細胞遠心調製、細胞診塗抹、コア生検、微細針吸引液、及び/又は組織片(例えば、クライオスタット組織片、及び/又はパラフィン包埋組織片)を含む。被験者から生物学試料を得る方法は技術的に知られている。例えば、肺組織又は肺細胞を得る方法はルーチン的である。典型的な生物学試料は正常な細胞又は組織、又は腫瘍の細胞又は組織からから単離され得る。新生物とは、一以上の細胞が分化を喪失し、成長速度が増加し、周辺組織の浸潤による特徴的退形成を受け、かつ細胞が転移する能力がある生物学的状態である。特定の例では、生物学試料は腫瘍細胞等の腫瘍試料を含む。
本開示方法は生物学試料中の(腫瘍試料、例えばNSCLC試料等)IGF1R遺伝子のコピー数を決定することを含む。試料がコントロールに対して増加したIGF1R遺伝子コピー数を持つ場合(正常な非腫瘍性試料又は参照値に対して約1.5倍、2倍、3倍、5倍、10倍、20倍、又はそれ以上等)、あるいはその代わりに、IGF1R遺伝子コピー数が約2より大きい場合(約2、3、4、5、10、20、又はそれ以上等)、又はIGF1R遺伝子コピー数の第15番染色体コピー数に対する比率が約2より大きい場合(約2,3、4、5、10、20、又はそれ以上等)、試料は増加したIGF1R遺伝子コピー数を持ち、良好な予後を有すると見なされる。逆に、試料がコントロール(正常な非腫瘍性試料又は参照値等)に対してIGF1R遺伝子コピー数が無変化又は減少であるか、又はIGF1R遺伝子コピー数が約2未満か、又はIGF1R遺伝子コピー数の第15番染色体コピー数に対する比率が約2未満の場合、被験者は予後不良である。
また、本明細書で開示されるのは、被験者(例えば、腫瘍性疾患被験者)由来の試料中の遺伝子のコピー数のスコアリング法(例えば、列挙すること)であって、試料は目的の遺伝子に対するISH(FISH、SISH、CISH、又はその2つ以上の組み合わせ等)により染色され、遺伝子の個々のコピーは試料中の細胞において区別可能である。特定の例では、試料は腫瘍試料(例えば、腫瘍生検または微細針吸引)等、被験者由来の生物学試料である。ISHによる遺伝子コピー数決定の方法は技術的に良く知られている。典型的な方法が第IV節に(例えば、IGF1Rコピー数を決定するため)記述されている。
この実施例では、非小細胞肺癌の被験者のIGF1R遺伝子コピー数の分析と予後を記述する。組織マイクロアレイ(TMA)はNSCLCの外科的治療を行った189人の患者由来の3つ揃いの試料を含んで作成した。患者の特性を表2に表示する。コホートの追跡期間中央値は、40%の5年生存確率(95% CI:31−48%)を持つ4年である。1.5mm直径の3つの組織コアが、各々の患者の原発腫瘍の異なる領域から得られた。TMAはMaxArrayにカスタマイズされた組織マイクロアレイサービス(インビトロジェン、サウスサンフランシスコ、カリフォルニア州)を使用して創られた。
この実施例は癌と診断された被験者の予後を決定するために使用できる特定の方法を記載する。しかしながら、当業者は、これらの特異的方法から外れた方法もまた、癌の被験者の予後を首尾良く与えることに使用可能であると認識するであろう。
本実施例は、インサイツハイブリダイゼーションにより検出される目的の遺伝子コピー数の典型的なスコアリング方法を記述する。
Claims (15)
- 被験者由来の生物学試料中の目的の遺伝子のコピー数をスコアリングする方法であって、
生物学試料をスキャンし、
試料中のインサイツハイブリダイゼーションで検出される遺伝子のシグナルの最高濃度を有する少なくとも3つの領域を同定し、
試料中のインサイツハイブリダイゼーションで検出される遺伝子のシグナルの最大数を有する個々の細胞を前記少なくとも3つの領域で同定し、試料の細胞中で遺伝子の個々のコピーが区別可能であり、
同定された細胞の各々における遺伝子のシグナル数を数え、
同定された細胞において細胞あたりの平均シグナル数を決定することで、遺伝子コピー数をスコアリングする
ことを含む方法。 - 同定された細胞においてインサイツハイブリダイゼーションで検出されるリファレンスのシグナル数を数え、試料の細胞中でリファレンスの個々のコピーが区別可能であり、
同定された細胞においてリファレンスのシグナル数に対する遺伝子のシグナル数の平均比率を決定する
ことを更に含む、請求項1に記載の方法。 - リファレンス及び目的の遺伝子が同一染色体上にある、請求項2に記載の方法。
- リファレンスがセントロメアDNAである、請求項2又は3に記載の方法。
- インサイツハイブリダイゼーションが銀インサイツハイブリダイゼーション、発色インサイツハイブリダイゼーション、蛍光インサイツハイブリダイゼーション、又はその二以上の組み合わせを含む、請求項1から4の何れか一項に記載の方法。
- 生物学試料が腫瘍試料を含む、請求項1から5の何れか一項に記載の方法。
- 腫瘍試料が肺腫瘍、乳房腫瘍、卵巣腫瘍、胃腫瘍、頭頸部腫瘍、食道腫瘍、又は神経膠腫を含む、請求項6に記載の方法。
- シグナル数が少なくとも20細胞中で数えられる、請求項1から7の何れか一項に記載の方法。
- シグナル数が少なくとも50細胞中で数えられる、請求項8に記載の方法。
- シグナル数が少なくとも200細胞中で数えられる、請求項9に記載の方法。
- 目的の遺伝子がIGF1R、HER2、EGFR、MET、TOP2A、又はMYCである、請求項1から10の何れか一項に記載の方法。
- 計数が自動画像化システムにより行われる、請求項1から11の何れか一項に記載の方法。
- 遺伝子コピー数に基づいて被験者の治療法を選択すること、
を更に含む、請求項1から12の何れか一項に記載の方法であって、試料が増加した遺伝子コピー数を有している場合に、前記遺伝子によりコード化されるポリペプチドに対する抗体又は阻害剤が治療法として選択される、方法。 - インサイツハイブリダイゼーションのために得られた試料を処理すること、
を更に含む、請求項1から13の何れか一項に記載の方法。 - 遺伝子コピー数をユーザーに提供すること、
を更に含む、請求項1から14の何れか一項に記載の方法。
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| EP (1) | EP2446053A1 (ja) |
| JP (2) | JP2012528569A (ja) |
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| IL290679B2 (en) | 2016-07-05 | 2023-10-01 | California Inst Of Techn | Hybridization chain reaction based on a minimal initiator |
| US20230183780A1 (en) * | 2016-07-25 | 2023-06-15 | InVivo BioTech Services GmbH | Dna probes for in situ hybridization on chromosomes |
| CN110895959B (zh) * | 2019-11-08 | 2022-05-20 | 至本医疗科技(上海)有限公司 | 基因拷贝数评估方法、装置、系统以及计算机可读介质 |
| WO2021215428A1 (ja) | 2020-04-22 | 2021-10-28 | 日華化学株式会社 | 核酸の検出方法及びオリゴヌクレオチドプローブ |
| CN115376609B (zh) * | 2022-10-24 | 2023-03-10 | 广州燃石医学检验所有限公司 | 一种判别met基因拷贝数扩增类型的方法及装置 |
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| US5721098A (en) | 1986-01-16 | 1998-02-24 | The Regents Of The University Of California | Comparative genomic hybridization |
| CA1323293C (en) | 1987-12-11 | 1993-10-19 | Keith C. Backman | Assay using template-dependent nucleic acid probe reorganization |
| EP0425563B1 (en) | 1988-07-20 | 1996-05-15 | David Segev | Process for amplifying and detecting nucleic acid sequences |
| US5427930A (en) | 1990-01-26 | 1995-06-27 | Abbott Laboratories | Amplification of target nucleic acids using gap filling ligase chain reaction |
| US5595707A (en) | 1990-03-02 | 1997-01-21 | Ventana Medical Systems, Inc. | Automated biological reaction apparatus |
| ATE205542T1 (de) | 1992-03-04 | 2001-09-15 | Univ California | Vergleichende genomhybridisierung |
| US6309823B1 (en) | 1993-10-26 | 2001-10-30 | Affymetrix, Inc. | Arrays of nucleic acid probes for analyzing biotransformation genes and methods of using the same |
| US5538848A (en) | 1994-11-16 | 1996-07-23 | Applied Biosystems Division, Perkin-Elmer Corp. | Method for detecting nucleic acid amplification using self-quenching fluorescence probe |
| US5648211A (en) | 1994-04-18 | 1997-07-15 | Becton, Dickinson And Company | Strand displacement amplification using thermophilic enzymes |
| JP3881009B2 (ja) | 1994-07-15 | 2007-02-14 | バイオメリオ・ベー・ベー | 核酸増幅方法を改良するためのrnaポリメラーゼの使用 |
| AT402203B (de) | 1995-06-13 | 1997-03-25 | Himmler Gottfried Dipl Ing Dr | Verfahren zur transkriptionsfreien amplifizierung von nucleinsäuren |
| US5716784A (en) | 1996-02-05 | 1998-02-10 | The Perkin-Elmer Corporation | Fluorescence detection assay for homogeneous PCR hybridization systems |
| WO1997045559A1 (en) | 1996-05-29 | 1997-12-04 | Cornell Research Foundation, Inc. | Detection of nucleic acid sequence differences using coupled ligase detection and polymerase chain reactions |
| US20030211630A1 (en) | 1998-02-27 | 2003-11-13 | Ventana Medical Systems, Inc. | Automated molecular pathology apparatus having independent slide heaters |
| US6582962B1 (en) | 1998-02-27 | 2003-06-24 | Ventana Medical Systems, Inc. | Automated molecular pathology apparatus having independent slide heaters |
| JP3847559B2 (ja) | 1998-02-27 | 2006-11-22 | ベンタナ・メデイカル・システムズ・インコーポレーテツド | 独立スライド加熱器を有する自動化分子病理学装置 |
| US6180349B1 (en) | 1999-05-18 | 2001-01-30 | The Regents Of The University Of California | Quantitative PCR method to enumerate DNA copy number |
| US7383134B2 (en) | 2002-01-15 | 2008-06-03 | Piper James R | Method and/or system for analyzing biological samples using a computer system |
| WO2005117553A2 (en) * | 2004-05-27 | 2005-12-15 | The Regents Of The University Of Colorado | Methods for prediction of clinical outcome to epidermal growth factor receptor inhibitors by cancer patients |
| EP1885878B1 (en) * | 2005-05-31 | 2010-08-11 | Dako Denmark A/S | Compositions and methods for predicting outcome of treatment |
| AU2007289053B2 (en) | 2006-09-01 | 2013-05-30 | Ventana Medical Systems, Inc. | Method for producing nucleic acid probes |
| AU2007329748B2 (en) | 2006-10-25 | 2014-05-08 | Ikonisys, Inc. | Automated detection of cancer and high grade hyperplasias |
| US8019134B2 (en) * | 2006-11-16 | 2011-09-13 | Definiens Ag | Automatic image analysis and quantification for fluorescence in situ hybridization |
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| EP2446053A1 (en) | 2012-05-02 |
| AU2010253978A1 (en) | 2012-01-12 |
| CA2763321C (en) | 2018-10-16 |
| US20120141472A1 (en) | 2012-06-07 |
| WO2010138912A1 (en) | 2010-12-02 |
| JP2015142574A (ja) | 2015-08-06 |
| CA2763321A1 (en) | 2010-12-02 |
| JP2012528569A (ja) | 2012-11-15 |
| AU2010253978B2 (en) | 2014-12-11 |
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