JP5792165B2 - ヒストンマクロh2aアイソフォームに基づいて癌再発のリスクを予測する診断のための判断材料を提供する方法 - Google Patents
ヒストンマクロh2aアイソフォームに基づいて癌再発のリスクを予測する診断のための判断材料を提供する方法 Download PDFInfo
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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
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
-
- 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
- G01N33/57407—Specifically defined cancers
- G01N33/57415—Specifically defined cancers of breast
-
- 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
- G01N33/57407—Specifically defined cancers
- G01N33/57423—Specifically defined cancers of lung
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Immunology (AREA)
- Chemical & Material Sciences (AREA)
- Hematology (AREA)
- Urology & Nephrology (AREA)
- Molecular Biology (AREA)
- Biomedical Technology (AREA)
- Cell Biology (AREA)
- Medicinal Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Hospice & Palliative Care (AREA)
- Oncology (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Food Science & Technology (AREA)
- Pathology (AREA)
- Biotechnology (AREA)
- Microbiology (AREA)
- Public Health (AREA)
- Animal Behavior & Ethology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Veterinary Medicine (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Pharmacology & Pharmacy (AREA)
- Organic Chemistry (AREA)
- Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
- Investigating Or Analysing Biological Materials (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
- Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
- Peptides Or Proteins (AREA)
Description
macro マクロ
in percent パーセント
Sample, Patient 試料、患者
protein expression level タンパク質発現レベル
図2
macro マクロ
in percent パーセント
Sample, Patient 試料、患者
Provability 確率
protein expression level タンパク質発現レベル
Disease-free survival time (in months) 無病生存期間(月)
図3
macro マクロ
Antibody 抗体
Overlay オーバーレイ
anti 抗
図4
Empty vector 空ベクター
Anti-macro 抗マクロ
図5
Histone ヒストン
Sample, Patient 試料、患者
図6
macro マクロ
Sample, Patient 試料、患者
in percent パーセント
Provability 確率
protein expression level タンパク質発現レベル
Disease-free survival time (in months) 無病生存期間(月)
図7
macro マクロ
Sample, Patient 試料、患者
ヒストン及びmRNA抽出、ウエスタンブロッティング並びにリアルタイムPCR
スイッチ可能なMEK1−ER融合タンパク質を発現するITM細胞の生成について上述した。40HTあり又はなしでのインキュベーションの後、細胞を採取し分注した。1つの細胞アリコットを、0.4M HCl内に再懸濁させ、4時間インキュベートしてヒストンタンパク質を抽出し、遠心分離して、水に透析した。RNeasy Mini Prepキット(Qiagen)を用いてRNAを抽出した。RNAeasyスピンカラムのフロースルーから、アセトンによりタンパク質を沈殿させた。タンパク質抽出物を、投入前にブラッドフォード(Bradford)アッセイにより正規化した。アイソフォーム特異的なマクロH2A抗体とともに、H2Aに対する市販の抗体(Abcam、ab15653、1:3000)及びH3に対する市販の抗体(Abcam、ab1791、1:30000)を用いて、ウエスタンブロットを行った。Superscript II逆転写酵素(Invitrogen)を用いて、第一鎖cDNA合成を行った。cDNAを、以下のオリゴを用いてリアルタイムPCR(Applied Biosystems)によって連続的に解析した。
mH2A1.1 AAGTTGTACAGGCTGACATTGC(配列番号1);
GTTCTTTTTCCGGAGTTCCA(配列番号2)、
mH2A1.2 CTTTGAGGTGGAGGCCATAA(配列番号3);
CACAAACTCCTTGCCACCTT(配列番号4)、
mH2A2 GGACGTCCAAAAAGTCCAAA(配列番号5);
GCTTCTGTCCCAGAACAAGG(配列番号6)、
and GAPDH TGGGTGTGAACCATGAGAAGTA(配列番号7);
CCTTCCACGATACCAAAGTTGT(配列番号8)。
試料を、本発明者らが試験実行におけるこれらの実験に対して信頼性の高い対照として事前に同定したGAPDHに正規化した。
マクロH2A1.1(アミノ酸198〜226)及びマクロH2A1.2(アミノ酸198〜228)を発現させ、GST融合タンパク質として精製した。マクロH2A2(アミノ酸162〜372)のマクロドメインを、(His)6−タグ融合タンパク質として精製した。抗原をウサギ(Eurogentec)に注入した。製造業者の指示に従って、HiTrap Protein−G HPカラム(GE Healthcare Life Sciences)を用いてウサギ血清から抗体を回収した。3つのマクロH2Aアイソフォームの組換え(His)6−タグ付きマクロドメインを、HiTrap NHS活性化HP(GE Healthcare)に結合した。これらのカラムを、後に、アイソフォームに特異的な抗体のアフィニティ精製に用いた。
National Center of TumorDiseases(NCT)、Heidelberg、Germanyによって、乳癌TMAが提供された。それらは、異なるブロックに分散された、各スライドに患者当り2つの試料で、260人の患者のホルマリン固定されかつパラフィン包理された試料を含んでいた。すべての乳癌患者は女性、中央年齢は58歳(範囲、30歳〜88歳)であった。これらの患者に関する臨床データは、さらなる解析には不十分であった。
Thoraxklinik Heidelberg、Germany及びNCTによって肺癌TMAが提供された。スライドは、切除可能であることが分かり、かつ2004年3月から12月の間に手術を受けた、NSCLCの41人の患者の試料を含んでいた(23人が腺腫、18人が扁平上皮癌)。
特徴 中央(範囲)/度数
性別(男/女) 31/8
診断時の年齢(歳) 64(43-80)
全身状態(0/1/2) 28/11/0
腫瘍細胞タイプ(AC/SCC) 22/17
手術のタイプ(LO-BI-PN) 26/2/11
切除状態(R0/R1/R2) 32/5/2
疾患の病期(手術後)(Ia/Ib/IIa/IIb/IIIa/IIIb/IV)
1/11/0/4/13/6/4
1年以内の腫瘍再発(y/n) 18/21
(AC:腺癌、SCC:扁平上皮癌、BI:二葉切除、LO:肺葉切除、PN:肺全摘出)
R2切除患者のうち、1人が再発(遠隔転移)、1人が再発なく生存、R1切除患者のうち、3人が再発(2人は局所転移、1人は遠隔転移)、2人は再発なく生存、R0切除患者のうち、15人が再発、17人が再発なく生存。
連続TMAスライドを用いて、マクロH2A1.1、マクロH2A1.2、マクロH2A2、Ki−67(Dako Cytomation、モノクローナルマウス抗ヒトKi−67、クローンMIB−1、1:100)及びヒストンH3(Abcam;ab1791;1:1000希釈液)に対する免疫組織化学染色を行った。Aperio Scanscope System及びImageScopeソフトウェアを用いてDepartment of Pathology(HeidelbergUniversity)でスライドをスキャンした。
Ki−67とマクロH2A1.1との関係を、アレイによって層別化された条件付き線形関連検定(conditional linear association test)を用いて評価した(Hothorn他、2006)。無病生存期間の依存度を、同様にアレイで層別化された条件付きログ−ランク検定(long-rank test)によって確立した(Hothorn他、2006)。
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Claims (12)
- 哺乳類患者における増殖性又は悪性腫瘍の診断のための判断材料を提供する方法であって、前記患者から取得された全血、血清、血漿を含む生体試料においてマクロH2A1.1及び/又はマクロH2A2の発現を検出することを含み、前記患者における増殖性又は悪性腫瘍の指標は、腫瘍疾患のない健康な患者由来の対照試料における前記マクロH2A1.1及び/又はマクロH2A2の発現と比較した前記マクロH2A1.1及び/又はマクロH2A2の発現の低さ又は減少である、方法。
- 哺乳類患者における緩徐な増殖性、前悪性又は良性腫瘍の診断のための判断材料を提供する方法であって、前記患者から取得された全血、血清、血漿を含む生体試料においてマクロH2A1.1及び/又はマクロH2A2の発現を検出することを含み、前記患者における緩徐な増殖性、前悪性又は良性腫瘍の指標は、腫瘍疾患のない健康な患者由来の対照試料における前記マクロH2A1.1及び/又はマクロH2A2の発現と比較した前記マクロH2A1.1及び/又はマクロH2A2の発現の高さ又は増加である、方法。
- 哺乳類患者における老化癌細胞を含む老化細胞の診断のための判断材料を提供する方法であって、前記患者から取得された全血、血清、血漿を含む生体試料においてマクロH2A1.1及び/又はマクロH2A2の発現を検出することを含み、前記患者における老化細胞の指標は、腫瘍疾患のない健康な患者由来の対照試料における前記マクロH2A1.1及び/又はマクロH2A2の発現と比較した前記マクロH2A1.1及び/又はマクロH2A2の発現の高さ又は増加である、方法。
- 哺乳類患者における癌再発のリスクの診断のための判断材料を提供する方法であって、前記患者から取得された全血、血清、血漿を含む生体試料においてマクロH2A1.1及び/又はマクロH2A2の発現を検出することを含み、前記患者における癌再発のリスクの指標は、腫瘍疾患のない健康な患者由来の対照試料における前記マクロH2A1.1及び/又はマクロH2A2の発現と比較した前記マクロH2A1.1及び/又はマクロH2A2の発現の低さ又は減少である、方法。
- 試料及び/又は対照試料におけるマクロH2A1.2の発現を正規化することをさらに含む、請求項1〜4のいずれか一項に記載の方法。
- 癌が、固形癌、肺癌、乳癌、腎臓癌、肝臓癌、頭頸部癌、前立腺癌、膵臓癌、胃癌、結腸癌、甲状腺癌、食道癌及び脳癌の群から選択される、請求項1〜5のいずれか一項に記載の方法。
- さらなる癌マーカーであるKi−67の発現を検出することを更に含み、試料におけるマクロH2A1.1及び/又はマクロH2A2の発現が、Ki−67の発現に逆相関する、請求項1〜6のいずれか一項に記載の方法。
- マクロH2A1.1の発現に基づく、該腫瘍における老化細胞、又は癌細胞の検出を更に含む、請求項1〜7のいずれか一項に記載の方法。
- 発現を検出することが、PCR若しくはrtPCR、マクロH2A1.1に特異的な若しくはマクロH2A2に特異的な抗体を用いる免疫組織化学染色、及び/又はmRNA解析を含む、請求項1〜8のいずれか一項に記載の方法。
- マクロH2A1.1若しくはマクロH2A2に特異的な抗体、又はそのマクロH2A1.1若しくはマクロH2A2に特異的な抗体の断片を、追加の補助剤とともに具備する、請求項1〜9のいずれか一項に記載の方法を行うための診断キット。
- マクロH2A1.1若しくはマクロH2A2に特異的な抗体、又はそのマクロH2A1.1若しくはマクロH2A2に特異的な抗体の断片を有効成分として含む、癌の診断、又は癌再発の診断のための薬剤。
- 癌が、固形癌、肺癌、乳癌、腎臓癌、肝臓癌、頭頸部癌、前立腺癌、膵臓癌、胃癌、結腸癌、甲状腺癌、食道癌及び脳癌の群から選択される、請求項11に記載の薬剤。
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