JP5897228B2 - 腎細胞癌の予後判定方法 - Google Patents
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- JP5897228B2 JP5897228B2 JP2015542099A JP2015542099A JP5897228B2 JP 5897228 B2 JP5897228 B2 JP 5897228B2 JP 2015542099 A JP2015542099 A JP 2015542099A JP 2015542099 A JP2015542099 A JP 2015542099A JP 5897228 B2 JP5897228 B2 JP 5897228B2
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Description
〔1〕腎細胞癌を含む組織の判定方法であって:
(1)被験体の腎臓組織から調製されたゲノムDNAを亜硫酸水素塩で処理する工程;
(2)該亜硫酸水素塩によって処理されたDNAをPCRによって増幅する工程;
(3)得られたPCR増幅産物をイオン交換クロマトグラフィーにかける工程;
(4)該クロマトグラフィーで得られた検出シグナルの保持時間を得る工程;
(5)工程(4)の結果が基準となる保持時間より早い場合に、該組織を、予後不良の腎細胞癌患者から得られた腎細胞癌を含む組織であると判定する工程、
を含む方法。
(1)被験体の腎臓組織から調製されたゲノムDNAを亜硫酸水素塩で処理する工程;
(2)該亜硫酸水素塩によって処理されたDNAをPCRによって増幅する工程;
(3)得られたPCR増幅産物をイオン交換クロマトグラフィーにかける工程;
(4)該クロマトグラフィーで得られた検出シグナルの保持時間を得る工程;
(5)工程(4)の結果が基準となる保持時間より早いか否かを、該組織が予後不良の腎細胞癌患者から得られた腎細胞癌を含む組織であるか否かを判定するためのデータとして取得する工程、
を含む方法。
(1)被験体の腎臓組織から調製されたゲノムDNAを亜硫酸水素塩で処理する工程;
(2)該亜硫酸水素塩によって処理されたDNAをPCRによって増幅する工程;
(3)得られたPCR増幅産物をイオン交換クロマトグラフィーにかける工程;
(4)該クロマトグラフィーで得られた検出シグナルの保持時間を得る工程;
(5)工程(4)の結果が基準となる保持時間より早い場合に、該被験体の腎細胞癌を予後不良と判定する工程、
を含む方法。
(1’)前記被験体の腎臓組織から調製されたゲノムDNAのPCR増幅領域に相当するメチル化していないDNAを亜硫酸水素塩で処理する工程;
(2’)工程(1’)で得られた亜硫酸水素塩によって処理されたDNAをPCRによって増幅する工程;
(3’)工程(2’)で得られたPCR増幅産物をイオン交換クロマトグラフィーにかける工程;
(3a)工程(3)のクロマトグラフィーで得られた検出シグナルから、工程(3’)のクロマトグラフィーで得られた検出シグナルを差し引いて差分データを得る工程、
を含む、〔1〕〜〔6〕のいずれか1項記載の方法。
(1)被験体の腎臓組織から調製されたゲノムDNAを亜硫酸水素塩で処理する工程;
(2)該亜硫酸水素塩によって処理されたDNAをPCRによって増幅する工程;
(3)得られたPCR増幅産物をイオン交換クロマトグラフィーにかける工程;
(4)該クロマトグラフィーで得られた検出シグナルの保持時間を得る工程;
(5)工程(4)の結果が基準となる保持時間より早い場合に、該組織を、予後不良の腎細胞癌患者から得られた腎細胞癌を含む組織であると判定する工程。
(1)被験体の腎臓組織から調製されたゲノムDNAを亜硫酸水素塩で処理する工程;
(2)該亜硫酸水素塩によって処理されたDNAをPCRによって増幅する工程;
(3)得られたPCR増幅産物をイオン交換クロマトグラフィーにかける工程;
(4)該クロマトグラフィーで得られた検出シグナルの保持時間を得る工程;
(5)工程(4)の結果が基準となる保持時間より早い場合か否かを、該組織が予後不良の腎細胞癌患者から得られた腎細胞癌を含む組織であるか否かを判定するためのデータとして取得する工程。
(1)被験体の腎臓組織から調製されたゲノムDNAを亜硫酸水素塩で処理する工程;
(2)該亜硫酸水素塩によって処理されたDNAをPCRによって増幅する工程;
(3)得られたPCR増幅産物をイオン交換クロマトグラフィーにかける工程;
(4)該クロマトグラフィーで得られた検出シグナルの保持時間を得る工程;
(5)工程(4)の結果が基準となる保持時間より早い場合に、該被験体の腎細胞癌を予後不良と判定する工程。
(1’)上記被験体の腎臓組織から調製されたゲノムDNAのPCR増幅領域に相当するメチル化していないDNAを亜硫酸水素塩で処理する工程;
(2’)工程(1’)で得られた亜硫酸水素塩によって処理されたDNAをPCRによって増幅する工程;
(3’)工程(2’)で得られたPCR増幅産物をイオン交換クロマトグラフィーにかける工程;
(3a)工程(3)のクロマトグラフィーで得られた検出シグナルから、工程(3’)のクロマトグラフィーで得られた検出シグナルを差し引いて差分データを得る工程。
109の癌組織(T)サンプル及び対応する107の非癌腎皮質組織(N)サンプルは、原発性の淡明細胞型腎細胞癌を罹患している110人の患者から手術によって摘出された試料から得たものであり、Nサンプルには顕著な組織学的変化は認められていない。なお、これら患者は、術前の治療は受けておらず、国立がん研究センター病院にて腎摘出術を受けた患者である。79名の男性と31名の女性とからなり、平均年齢は62.8±10.3歳(平均±標準偏差、36〜85歳)である。
従来法によるCIMP陰性/陽性判定は、特許文献4に記載のMassARRAY法(実施例5)に従って行った。メチル化DNA検出方法の1つであるMassARRAY法にて、17遺伝子(FAM150A、GRM6、ZNF540、ZFP42、ZNF154、RIMS4、PCDHAC1、KHDRBS2、ASCL2、KCNQ1、PRAC、WNT3A、TRH、FAM78A、ZNF671、SLC13A5及びNKX6−2)のCpGサイト(表1〜4)についてのDNAメチル化レベルを検出した。
攪拌機付き反応器中の3重量%ポリビニルアルコール(日本合成化学社製)水溶液2000mLに、テトラエチレングリコールジメタアクリレート(新中村化学工業社製)200g、トリエチレングリコールジメタアクリレート(新中村化学工業社製)100g、グリシジルメタクリレート(和光純薬工業社製)100gおよび過酸化ベンゾイル(キシダ化学社製)1.0gの混合物を添加した。攪拌しながら加熱し、窒素雰囲気下にて80℃で1時間重合した。次に、強カチオン性基を有する親水性単量体として、メタクリル酸エチルトリメチルアンモニウムクロリド(和光純薬工業社製)100gをイオン交換水に溶解した。これを同じ反応器に添加して、同様にして、攪拌しながら窒素雰囲気下にて80℃で2時間重合した。得られた重合組成物を水およびアセトンで洗浄することにより、4級アンモニウム基を有する親水性重合体の層を表面に有する被覆重合体粒子を得た。得られた被覆重合体粒子について、粒度分布測定装置(AccuSizer780/Particle Sizing Systems社製)を用いて測定したところ、平均粒子径は10μmであった。
(1)ゲノムDNAの抽出と亜硫酸水素塩処理
患者から得た新鮮凍結組織サンプルを、フェノール−クロロホルムにて処理し、次いで透析を施すことによって、高分子量DNAを抽出した(Sambrook,J.ら、モレキュラークローニング:実験マニュアル 第3版、コールドスプリングハーバー出版、NY、6.14〜6.15ページ 参照)。DNA500ngを、EZ DNA Methylation−GoldTMキット(Zymo Research社製)を用い、亜硫酸水素塩処理に供した。
(1)で得られた亜硫酸水素塩処理ゲノムDNAをPCR増幅した。PCRは、鋳型DNA 10ng、GeneAmp 1×PCR buffer(Life Technologies社製)、200μmol/L GeneAmp dNTP Mix(Life Technologies社製)、0.75U AmpliTaq Gold DNA Polymerase(Life Technologies社製)、0.25μmol/L forwardおよびreverseプライマーを含んだ25μLの反応液で行った。PCRでは、95℃5分間初期熱変性を行った後、94℃30秒→59℃(F3−R3プライマー使用時)30秒→72℃40秒を1サイクルとして35サイクル続け、さらに72℃10分の伸張反応を行った。PCR終了後、予めethidium bromideを添加した3%アガロースゲルに、反応液5μLにloading dye solution 1μLを混ぜた後アプライして電気泳動し、PCR増幅産物を観察して目的のPCR増幅産物が得られたことを確認した。各プライマーの配列は、表7に示した。
参考例2で準備したアニオン交換カラムを用いて、以下の条件でイオン交換クロマトグラフィーを行い、(2)で得られた各PCR増幅産物を分離検出した。
システム:LC−20Aシリーズ(島津製作所社製)
溶離液:溶離液A 25mmol/Lトリス塩酸緩衝液(pH7.5)
溶離液B 25mmol/Lトリス塩酸緩衝液(pH7.5)+1mol/L硫酸アンモニウム
分析時間:分析時間は15分
溶出法:以下のグラジエント条件により溶離液Bの混合比率を直線的に増加させた。
0分(溶離液B40%)→10分(溶離液B100%)
検体:(2)で得られたPCR増幅産物
流速:1.0mL/min
検出波長:260nm
試料注入量:5μL
カラム温度:70℃
FAM150A遺伝子プロモーターにおける、39個のCpGサイトを有する384bp領域のDNA配列に基づいて、39個のCpGサイト全てがメチル化されているDNA(100%メチル化DNA)から全くメチル化されていないDNA(0%メチル化DNA)まで、メチル化率の異なる8つのDNAを合成した。なお50%メチル化DNAについては、メチル化位置を5'側寄り、3’側寄り、および中央寄りの3パターンのDNAを合成した。各合成DNAのメチル化率およびCpGアイランドのメチル化数を表8に示す。
参考例1でCIMP判定された腎細胞癌のうち、患者13人からのCIMP陽性腎細胞癌と、5人からのCIMP陰性腎細胞癌からゲノムDNAを調製した。参考例3(1)〜(3)の手順に従って、該DNAを亜硫酸水素塩処理、PCR、およびHPLCにかけた。PCRでは、FAM150A遺伝子プロモーターにおける、384bp領域を増幅した。
さらに、上記PCR増幅領域におけるメチル化率が0%(陰性対照)および100%(陽性対照)のDNAについても、それぞれ同様の手順でHPLC分析した。
Claims (15)
- 腎細胞癌を含む組織の判定方法であって:
(1)被験体の腎臓組織から調製されたゲノムDNAを亜硫酸水素塩で処理する工程;
(2)工程(1)で得られた亜硫酸水素塩によって処理されたDNAをPCRによって増幅する工程;
(3)工程(2)で得られたPCR増幅産物をアニオン交換クロマトグラフィーにかける工程;
(4)該クロマトグラフィーで得られた検出シグナルの保持時間を得る工程;
(5)工程(4)の結果が基準となる保持時間より早い場合に、該組織を、予後不良の腎細胞癌患者から得られた腎細胞癌を含む組織であると判定する工程、
を含む方法。 - 前記工程(2)において、PCR増幅されるDNAが、FAM150A、GRM6、ZNF540、ZFP42、ZNF154、RIMS4、PCDHAC1、KHDRBS2、ASCL2、KCNQ1、PRAC、WNT3A、TRH、FAM78A、ZNF671、SLC13A5及びNKX6−2からなる群より選択される少なくとも1つの遺伝子におけるCpGアイランドを含む、請求項1記載の方法。
- 前記工程(2)においてPCR増幅されるDNAが、FAM150A遺伝子プロモーター領域を含む、請求項1記載の方法。
- 前記工程(2)のPCRにおいて、配列番号51及び52で示されるPCRプライマーが使用される、請求項1記載の方法。
- 前記工程(4)の前に、さらに以下の工程:
(1’)前記被験体の腎臓組織から調製されたゲノムDNAのPCR増幅領域に相当するメチル化していないDNAを亜硫酸水素塩で処理する工程;
(2’)工程(1’)で得られた亜硫酸水素塩によって処理されたDNAをPCRによって増幅する工程;
(3’)工程(2’)で得られたPCR増幅産物をアニオン交換クロマトグラフィーにかける工程;
(3a)工程(3)のクロマトグラフィーで得られた検出シグナルから、工程(3’)のクロマトグラフィーで得られた検出シグナルを差し引いて差分データを得る工程、
を含む、請求項1〜4のいずれか1項記載の方法。 - 腎細胞癌患者の予後判定方法であって:
(1)被験体の腎臓組織から調製されたゲノムDNAを亜硫酸水素塩で処理する工程;
(2)該亜硫酸水素塩によって処理されたDNAをPCRによって増幅する工程;
(3)得られたPCR増幅産物をアニオン交換クロマトグラフィーにかける工程;
(4)該クロマトグラフィーで得られた検出シグナルの保持時間を得る工程;
(5)工程(4)の結果が基準となる保持時間より早い場合に、該被験体の腎細胞癌を予後不良と判定する工程、
を含む方法。 - 前記工程(2)において、PCR増幅されるDNAが、FAM150A、GRM6、ZNF540、ZFP42、ZNF154、RIMS4、PCDHAC1、KHDRBS2、ASCL2、KCNQ1、PRAC、WNT3A、TRH、FAM78A、ZNF671、SLC13A5及びNKX6−2からなる群より選択される少なくとも1つの遺伝子におけるCpGアイランドを含む、請求項6記載の方法。
- 前記工程(2)においてPCR増幅されるDNAが、FAM150A遺伝子プロモーター領域を含む、請求項6記載の方法。
- 前記工程(2)のPCRにおいて、配列番号51及び52で示されるPCRプライマーが使用される、請求項6記載の方法。
- 前記工程(4)の前に、さらに以下の工程:
(1’)前記被験体の腎臓組織から調製されたゲノムDNAのPCR増幅領域に相当するメチル化していないDNAを亜硫酸水素塩で処理する工程;
(2’)工程(1’)で得られた亜硫酸水素塩によって処理されたDNAをPCRによって増幅する工程;
(3’)工程(2’)で得られたPCR増幅産物をアニオン交換クロマトグラフィーにかける工程;
(3a)工程(3)のクロマトグラフィーで得られた検出シグナルから、工程(3’)のクロマトグラフィーで得られた検出シグナルを差し引いて差分データを得る工程、
を含む、請求項6〜9のいずれか1項記載の方法。 - 腎細胞癌を含む組織を判定するためのデータを得る方法であって:
(1)被験体の腎臓組織から調製されたゲノムDNAを亜硫酸水素塩で処理する工程;
(2)該亜硫酸水素塩によって処理されたDNAをPCRによって増幅する工程;
(3)得られたPCR増幅産物をアニオン交換クロマトグラフィーにかける工程;
(4)該クロマトグラフィーで得られた検出シグナルの保持時間を得る工程;
(5)工程(4)の結果が基準となる保持時間より早いか否かを、該組織が予後不良の腎細胞癌患者から得られた腎細胞癌を含む組織であるか否かを判定するためのデータとして取得する工程、
を含む方法。 - 前記工程(2)において、PCR増幅されるDNAが、FAM150A、GRM6、ZNF540、ZFP42、ZNF154、RIMS4、PCDHAC1、KHDRBS2、ASCL2、KCNQ1、PRAC、WNT3A、TRH、FAM78A、ZNF671、SLC13A5及びNKX6−2からなる群より選択される少なくとも1つの遺伝子におけるCpGアイランドを含む、請求項11記載の方法。
- 前記工程(2)においてPCR増幅されるDNAが、FAM150A遺伝子プロモーター領域を含む、請求項11記載の方法。
- 前記工程(2)のPCRにおいて、配列番号51及び52で示されるPCRプライマーが使用される、請求項11記載の方法。
- 前記工程(4)の前に、さらに以下の工程:
(1’)前記被験体の腎臓組織から調製されたゲノムDNAのPCR増幅領域に相当するメチル化していないDNAを亜硫酸水素塩で処理する工程;
(2’)工程(1’)で得られた亜硫酸水素塩によって処理されたDNAをPCRによって増幅する工程;
(3’)工程(2’)で得られたPCR増幅産物をアニオン交換クロマトグラフィーにかける工程;
(3a)工程(3)のクロマトグラフィーで得られた検出シグナルから、工程(3’)のクロマトグラフィーで得られた検出シグナルを差し引いて差分データを得る工程、
を含む、請求項11〜14のいずれか1項記載の方法。
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WO2013168644A1 (ja) * | 2012-05-11 | 2013-11-14 | 独立行政法人国立がん研究センター | 腎細胞癌の予後予測方法 |
WO2014136930A1 (ja) * | 2013-03-07 | 2014-09-12 | 積水メディカル株式会社 | メチル化dnaの検出方法 |
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US5786146A (en) | 1996-06-03 | 1998-07-28 | The Johns Hopkins University School Of Medicine | Method of detection of methylated nucleic acid using agents which modify unmethylated cytosine and distinguishing modified methylated and non-methylated nucleic acids |
US7807822B2 (en) | 1996-08-01 | 2010-10-05 | Robert Bridenbaugh | Methods for purifying nucleic acids |
DE10132212B4 (de) * | 2001-06-27 | 2005-11-24 | Epigenomics Ag | Verfahren zum Nachweis von Cytosin-Methylierung durch vergleichende Analyse der Einzelstränge von Amplifikaten |
WO2007016668A2 (en) * | 2005-08-02 | 2007-02-08 | Sequenom, Inc. | Methods and compositions for disease prognosis based on nucleic acid methylation |
JP2010063413A (ja) | 2008-09-11 | 2010-03-25 | Japan Health Science Foundation | Bacクローンを用いる腎細胞癌の予後予測方法 |
KR20130041961A (ko) * | 2010-07-23 | 2013-04-25 | 프레지던트 앤드 펠로우즈 오브 하바드 칼리지 | 체액에서 질환 또는 상태의 특징을 검출하는 방법 |
EP2664917B1 (en) * | 2011-01-12 | 2017-09-06 | Sekisui Medical Co., Ltd. | Method for detecting single nucleotide polymorphisms |
US20140349284A1 (en) | 2011-03-31 | 2014-11-27 | Takuya Yotani | Sample nucleic acid for single nucleotide polymorphism detection purposes, pcr primer for preparing sample for single nucleotide polymorphism detection purposes, and method for preparing sample for single nucleotide polymorphism detection purposes which can be used in ion exchange chromatographic analysis |
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WO2013168644A1 (ja) * | 2012-05-11 | 2013-11-14 | 独立行政法人国立がん研究センター | 腎細胞癌の予後予測方法 |
WO2014136930A1 (ja) * | 2013-03-07 | 2014-09-12 | 積水メディカル株式会社 | メチル化dnaの検出方法 |
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EP3112475A1 (en) | 2017-01-04 |
EP3112475A4 (en) | 2017-10-18 |
US20180340236A1 (en) | 2018-11-29 |
US10190172B2 (en) | 2019-01-29 |
CN106062215B (zh) | 2020-09-22 |
JPWO2015129916A1 (ja) | 2017-03-30 |
EP3112475B1 (en) | 2018-08-15 |
CN111057752A (zh) | 2020-04-24 |
WO2015129916A1 (ja) | 2015-09-03 |
US20170058355A1 (en) | 2017-03-02 |
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