JP6779858B2 - Egfr−標的製剤に対する感受性予測用の新規なバイオマーカー及びその用途 - Google Patents
Egfr−標的製剤に対する感受性予測用の新規なバイオマーカー及びその用途 Download PDFInfo
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Description
(neuroblastoma RAS viral (v-ras)oncogene homolog、NP_002515.1)、又は、BRAF(v-raf murine sarcoma viral oncogene homolog B、NP_004324.2)遺伝子が野生型の場合、EGFR-標的製剤に対する感受性を予測することで、KRAS、NRAS又はBRAF変異を有するガン細胞には所望の効果が得られない場合に適用することができる。
Adam32(ADAM metallopeptidase domain 32、NM_145004.5)、FZD4(Frizzled family receptor 4、NM_012193.2)、GPER(G protein-coupled estrogen receptor 1、 NM_001505.2)、GPR101(G protein-coupled receptor 101、 NM_054021.1)遺伝子は、EGFR転写活性-関連遺伝子であって、本発明のバイオマーカーであるRON遺伝子の活性及びその産物である活性型タンパク質に応じて発現が誘導されるので、前記RON遺伝子によるEGFR-標的製剤に対する感受性を予測するバイオマーカーとして含まれ得る。
)-標的製剤に対する感受性予測用組成物を提供する。
Kirsten rat sarcoma viral oncogene homolog、NM_033360.2)、NRAS(neuroblastoma RAS viral(v-ras) oncogene homolog、NP_002515.1)、又は、BRAF(v-raf murine sarcom a viral oncogene homolog B、 NP_004324.2)遺伝子が野生型の場合、EGFR-標的製剤に対する感受性を予測するものであって、KRAS、NRAS又はBRAF変異を有するガン細胞には所望の効果が得られない場合に適用することができる。
carcinoma)、子宮頸ガン(cervical cancer)、小腸ガン(small intestine cancer)、
内分泌ガン(endocrine cancer)、甲状腺ガン(thyroid cancer)、副甲状線ガン
(parathyroid cancer)、腎ガン(adrenal cancer)、軟組織腫瘍(soft tissue tumor)、尿道ガン(urethral cancer)、前立腺ガン(prostate cancer)、気管支ガン(bronchogenic cancer)、骨髓ガン(bone marrow tumor)などを含むが、それに限定されるものではない。
(a)対象から生物学的試料を用意する段階と;
(b)前記生物学的試料内のRON(Recepteur d’Origine Nantais、NM_002447.1)
遺伝子の発現水準; 又は、前記遺伝子のタンパク質の発現或いは活性水準を測定する段階と;
(c)前記(b)段階で測定した水準の確認結果に基づいて、前記対象のEGFR-標的製剤に対する感受性を判定する段階と;
を含む、EGFR-標的製剤に対する感受性予測方法を提供する。
(ADAM metallopeptidase domain 11、NM_002390.4)、Adam32(ADAM metallopeptidase domain 32、NM_145004.5)、FZD4(Frizzled family receptor 4、NM_012193.2)、GPER(G protein-coupled estrogen receptor 1、 NM_001505.2)、NM_001505.2)、GPR101(G protein-coupled receptor 101、NM_054021.1)遺伝子及びそれらの組合せからなる群より選択されたいずれか一つの遺伝子の発現水準; 又は、前記遺伝子のタンパク質の発現或いは活性水準を追加的に(さらに)測定する。
また、バイオマーカーの“正常” 発現水準或いは値と比較して、“差動(differential)水準”或いは“差動値”を有するか、“異なって発現された”ものとして称され得、発現において定量的差異だけではなく定性的差異の両方を含む。
免疫沈降法(immunoprecipitation)
大腸ガン細胞株において、RON活性型を分析するために、大腸ガン細胞株溶解液500μgを、抗-RON抗体1μgと混合した後、4℃で12時間の間培養し、その後、 Protein-Sepharose bead(Santa Cruz Biotehcnology、Santa Cruz、CA、USA)20μlを添加した後、2時間の間追加反応した。免疫沈降物を、緩衝液(Nondiet
P-40 lysis buffer)で5回洗浄した後、2XSDSサンプル溶液20μl を添加して加熱し、その後、anti-RON(Santa Cruz Biotechonology)、anti-phospho-Tyrosine(Cell Signaling、Beverly、CA、USA)抗体を用いてウエスタンブロットを行った。
RONを、タンパク質を発現していないColo320HSR大腸ガン細胞株に、RON活性型であるΔ160及び/又はc-METを発現する構造物(plasmid)で、48時間の間形質感染させた。その後、細胞の溶解物をマイクロアレイ分析した。
RONとEGFRとの外因性相互作用を分析する目的で、RONタンパク質を発現していないLoVo大腸ガン細胞株に、RON活性型であるΔ160を発現する構造物で、48時間の間形質感染した。
5'-ACUUUGUAGAGGAGUUUGAUU-3'。
RT-PCR(逆転写-PCR)を行うために、RONを発現していないColo320HSR大腸ガン細胞株と、RON活性型であるRONΔ160を発現する構造物とで、48時間の間形質感染させた細胞株、RONが活性化されているKM12C大腸ガン細胞株に、RON siRNAを用いて48時間形質感染させた細胞株から、トリゾール(Trizol)(Cat.#15596-026、Life technologiesTM)を用いて、それぞれRNAを抽出した。抽出されたRNAは、RT-PCR Kit(AccuPower RT PreMix、Bioneer)を用いて、 cDNAに合成した。当該遺伝子の発現程度の差は、合成されたcDNA、遺伝子特異的なプライマーを用いて、PCR(AccuPower PCRPreMix、Bioneer)で確認したし、リアルタイムPCR(LightCycler 480 SYBR Green、Roche)を用いて定量化した。
ウエスタンブロットを行うために、各細胞から分離したタンパク質をSDS-
PAGEを通じて分離した後、それをメンブレン(PolyScreen membranes(New England Nuclear、Boston、MA、USA)に移した後、多様な抗体(anti-phospho RON(MyBio Source、San Diego、California、USA))、anti-phospho Tyrosine、anti-EGFR、anti-phospho EGFR(Cell signaling Technology、Beverly、MA、USA)、anti-RON及びanti-r-tubulin(Santa Cruz Biotechnology)を用いて、4℃で12時間の間反応させ、その後、 1XTBS-T緩衝液で10分間 3回洗浄した。適切な抗rabbit-HRP或いは抗mouse-HRP secondary抗体を、常温で2時間反応させた後に、1XTBS-T緩衝液で10分間 3回洗浄し、その後、ECL solution(Amersham、Buckinghamshire、UK)を使用してタンパク質の発現を検証した。
RONタンパク質を発現していないColo320HSR細胞株に、RON活性型であるΔ160 構造物を48時間の間形質感染した後、細胞溶解物を収去した。収去された細胞溶解物50μgとHuman phospho-RTK array kit(R&D Systems、Inc、Minneapolis、MN、USA)に含まれているメンブレンと4℃で12時間の間反応させた後、TBS-T緩衝液で3回ずつ洗浄し、その後、anti-phospho-Tyrosine HRP抗体を、常温で2時間の間反応させた後、TBS-T緩衝液で3回ずつ洗浄した。その後、メンブレンをECL solution(Amersham、Buckinghamshire、UK)を使用して、RTK(Receptor tyrosine kinase)タンパク質の発現変化を検証した。
RONが活性化されていないCaCo2及びLIM1215大腸ガン細胞株と、活性化されているKM12C細胞株とに、セツキシマブ(Cetuximab)(Merck & Co.、Inc、NJ、USA)を、5、10、20μg/mlで48時間の間処理した後、細胞液を収去して、トリパンブルー計数法(trypan blue counting)を実施した(図3a)。
RONが活性化されているKM12C大腸ガン細胞株に、RON阻害剤(LY2801653)3 μMとEGFR標的製剤(cetuximab)20μg/mlとを48時間処理した。処理後に、細胞溶解物を収去して、トリパンブルー計数法を実施した。
(Creative Diagnostic #TAB-184 Anti-Human RON Therapeutic Antibody)とEGFR 標的製剤(cetuximab)100μg/mlとを、48時間処理した。処理後、前記と同じ方法で細胞死滅の誘導程度を確認した。
突然変異の製作は、Muta-Direct mutagenesisキット(IntRON、Cat No. 15071)を用いて、キットより提供する指針に従って実施した。突然変異の製作(Mutagenesis)に使用されたプライマー配列は、次の通りである:
RON活性の分析のために、細胞株又は大腸ガン患者組織からタンパク質を抽出(RIPA bufferを使用する)した後、20μgの細胞及び50μgの大腸ガン患者組織に、
phospho-RON 抗体(Mybiosource、MBS462024、dilution factor 1:1000)を用いて活性の有無を確認した。
Forward: 5'-CTCTGGGGACCAGGTTTTCC-3’、
Reverse: 5'-ACCATCAATGGCAGGGAGTG-3'。
RT-PCRの条件は、94℃で5 分、94℃で30 秒、63℃で30 秒、72℃で1 分30 秒のように37 サイクル(cycles)を実施したし、72℃で10 分間延長させた。RON野生型の場合は1552bp、RONΔ155の場合は1078bp、RONΔ160の場合は1225bpで確認された。
Forward: 5'-TGG TCA GTA GCA GCT TCT CA-3'、
Reverse: 5'-AGG CAG CAG GAT ACC AAG GA-3'。
RT-PCRの条件は、94℃で5分、94℃で30秒、57℃で45秒、72℃で1分のように38 サイクルを実施したし、72℃で10分間延長させた。RON野生型の場合は1.6kb、RONΔ160の場合は1.3kb、RONΔ155の場合は1.1kbで確認された。
1-1. ヒト大腸ガン細胞株でのRONタンパク質活性型の存在有無
本発明者等は、RONタンパク質が活性化又は非活性化されている大腸ガン細胞株を選別する目的で、全19種のヒト大腸ガン細胞株において、RONリン酸化をウエスタンブロッティング(Western blotting)を用いて確認した。
本発明者等は、RONタンパク質が存在しないColo320HSR細胞株でのRON発現に応じる遺伝子の発現様相を分析する目的で、RONタンパク質が存在しないColo320HSR細胞株に、MET及びRON活性化型であるΔ160遺伝子を同時に過発現させた後、マイクロアレイを実施した。
本発明者等は、RON活性化に応じるEGFR転写活性-関連遺伝子発現の変化様相を分析する目的で、RONが発現しない Colo320HSR大腸ガン細胞株に、RON活性化型であるΔ160遺伝子を過発現させた後、RONにより発現が変化すると推定されるEGFR転写活性に関与する5個の遺伝子(Adam11、Adam32、FZD4、GPER、GPR101)に対して、リアルタイムPCRを実施した。
本発明者等は、RON活性化に応じるEGFR転写活性-関連遺伝子発現の変化様相を分析する目的で、RONが発現しないColo320HSR大腸ガン細胞株に、RON遺伝子の活性化型であるΔ160遺伝子を過発現させた後、RONにより発現が変化すると推定されるEGFR転写活性に関与する5個の遺伝子(Adam11、Adam32、FZD4、GPER、GPR101)に対して、PCRを実施した。
本発明者等は、RON抑制によるEGFR転写活性-関連遺伝子発現の変化様相を分析する目的で、RONが活性化されているKM12C大腸ガン細胞株に、siRNA技法を使用してRON活性を人為的に抑制させた後に、EGFR転写活性-関連遺伝子(Adam11、 Adam32、FZD4、GPER、GPR101)の発現を、リアルタイム(real-time)PCRで分析した。
上述したように、実施例1-2(図1b)において同定され、実施例1-3〜1-5(図1c〜図1e)において検証されたEGFR転写活性(transactivation)-関連遺伝子の発現が、RON活性化によることが確認された。それから、本発明者等は、実際RON活性化に応じてEGFRタンパク質の活性化が誘導されるかを確認するために、RONが発現されないColo320HSR大腸ガン細胞株に、RON活性化型であるΔ160遺伝子を過発現させた後、ウエスタンブロッティングを用いて、EGFRのリン酸化タンパク質発現の有無を確認した。
2-1. RONタンパク質の活性化によるEGFRタンパク質の活性化
本発明者等は、RON活性化によるEGFRタンパク質の活性化を確認する目的で、RONが発現しないLoVo及びColo320HSR大腸ガン細胞株に、RON遺伝子の活性化型であるΔ160遺伝子を過発現させた後、ウエスタンブロットを実施した。
本発明者等は、RONタンパク質の活性化によるEGFRタンパク質の活性変化を確認する目的で、RONが発現され活性化されているKM12C及びHT29大腸ガン細胞株に、siRNA技法を使用してRONを人為的に抑制させた後、ウエスタンブロットを実施してEGFRのリン酸化誘導を確認した。
本発明者等は、EGFR リガンド(ligand)依存的EGFR活性変化を確認する目的で、RONが発現され活性化されているKM12C大腸ガン細胞株に、siRNA技法を使用して RONを抑制させた後、EGFRの活性を誘導するEGF リガンド(ligand)処理時間に応じるEGFRのリン酸化程度をウエスタンブロットで確認した。
3-1. RONタンパク質とEGFRタンパク質間の内因性(endogenous)細胞内結合分析
本発明者等は、RONが活性化されていないCaCO2大腸ガン細胞株及びRONが活性化されているKM12C大腸ガン細胞株の細胞内RONタンパク質とEGFRタンパク質間結合の有無を分析するために、RON 抗体を用いて、免疫沈降法(immunoprecipitation)でRONタンパク質とEGFRタンパク質間結合の有無を観察した。
本発明者等は、RONが活性化されていない大腸ガン細胞株CaCO2に、RON正常型遺伝子とEGFR正常型遺伝子とをそれぞれ過発現させたものと、RON正常型遺伝子とEGFR正常型遺伝子とを同時に過発現させた後、RON抗体を用いて免疫沈降法(immunoprecipitation)でRONタンパク質とEGFRタンパク質間結合の有無を観察した。
本発明者等は、大腸ガン細胞株ではないRONとEGFRとの発現がない293T細胞株に、RONタンパク質とEGFRのキナーゼドメイン(kinase domain)タンパク質及びEC(細胞外ドメイン)タンパク質を、それぞれ過発現させたものと、RONとEGFRのキナーゼドメインタンパク質を同時に過発現させた後、RON抗体を用いて、免疫沈降法(immunoprecipitation)でRONタンパク質と結合するEGFRのドメイン(domain)を観察した。
本発明者等は、RONタンパク質とEGFRのEC(extracellular domain; 細胞外ドメイン)タンパク質との結合を再確認するために、インビトロ・セルフリー・プルダウンアッセイを用いて、RON正常型タンパク質と活性型Δ160タンパク質とを、それぞれEGFRのキナーゼドメインタンパク質とEC(extracellular domain)タンパク質とに反応させて、結合の有無を観察した。
本発明者等は、EGFRタンパク質と結合するRONの重要結合部位を分析するために、コンピューターモデリングシステムを用いて、EGFRタンパク質の構造とRONタンパク質の構造とを代入して、EGFRと結合するRONの結合部位を予測した。
本発明者等は、EGFRタンパク質と結合するRONの重要結合部位を分析するために、 RONとEGFRの発現がない293T細胞株に、RON正常型遺伝子及び活性型Δ160とRONのE387A及びH424L点突然変異(point mutant)遺伝子をそれぞれ過発現させ、EGFR遺伝子と同時に過発現させた後、RON抗体を用いて、免疫沈降法(immunoprecipitation)で正常型、活性型、突然変異型RONンパク質とEGFRタンパク質間の結合を観察した。
本発明者等は、EGFRタンパク質と結合するRONの結合部位に応じてEGFR活性の有無を分析するために、RONとEGFRの発現がない293T細胞株に、RON正常型遺伝子及び活性型Δ160遺伝子と、実施例3〜6(図3f)において確認したH424L突然変異遺伝子とをそれぞれ過発現させ、EGFR正常型遺伝子を同時に過発現させて、EGFRの活性をウエスタンブロットでEGFRのリン酸化を確認した。
4-1. RON活性型タンパク質の有無に応じるリガンド(ligand)-依存的EGFRの活性有無の分析
本発明者等は、RONとEGFRの発現がない293T細胞株に、EGFRの正常型タンパク質とEGFRのキナーゼ抑制(kinase dead)タンパク質をそれぞれ過発現させた後、RONの活性化型であるΔ160タンパク質の存在有無に応じて、EGFRのリガンド(ligand)であるEGFによるEGFRの活性有無を分析した。
本発明者等は、RONとEGFRの発現がない293T細胞株に、EGFRの正常型タンパク質とEGFRのキナーゼ抑制(kinase dead)タンパク質とをそれぞれ過発現させた後、 RONの活性を誘導するリガンドであるMSPの存在有無に応じて、EGFRのリガンドであるEGFによるEGFRの活性有無を分析した。
5-1. RON活性抑制によるEGFRの活性抑制及びセツキシマブ(cetuximab)に対するEGFR活性抑制の分析
表5に示したように、KM12C大腸ガン細胞株は、KRAS、NRAS、BRAF野生型
遺伝子型を有し、セツキシマブに対して抵抗性があるものと知られている(Todd M. et al、Dual Pharmacological Targeting of the MAP Kinase and PI3K/mTOR Pathway in Preclinical Models of Colorectal Cancer。PLOS 2014、Volume 9、Issue 11、e113037)。
表6に示したように、CaCo-2大腸ガン細胞株は、KRAS、NRAS、BRAF野生型の遺伝子型を有し、セツキシマブに対して敏感性があるものと知られている
(Giovanni B. et al、Antitumoral Efficacy of the Protease Inhibitor Gabexate Mesilate in Colon Cancer Cells Harbouring KRAS、BRAF and PIK3CA Mutations。PLOS 2012、Volume 7、Issue 7、e41347)。
本発明者等は、RONが活性化されており、セツキシマブに抵抗性を持つKM12C大腸ガン細胞株に、RONをsiRNA技法で人為的に抑制させた後、セツキシマブを処理し、トリパンブルー細胞計数法(trypan blue cell counting)で細胞死滅を分析した。
本発明者等は、RONが活性化されており、セツキシマブに抵抗性を持つKM12C大腸ガン細胞株に、RONをsiRNA技法で人為的に抑制させた後、セツキシマブを処理し、ウエスタンブロットで下位シグナル機序を観察した。
本発明者等は、RONが活性化されており、セツキシマブに抵抗性を持つKM12C大腸ガン細胞株に、RONの活性を抑制し得る阻害剤LY2801653とセツキシマブとをそれぞれ処理したグループと、LY2801653とセツキシマブとを併用処理したグループとに対し、トリパンブルー細胞計数法(trypan blue cell counting)で細胞死滅を分析した。
本発明者等は、RONが活性化されていなく、セツキシマブに敏感性を持つCaCo-2と、SW48大腸ガン細胞株に、RONの活性化型であるΔ160とΔ155を過発現させた後、セツキシマブに対する細胞死滅を観察した。
本発明者等は、RONが活性化されていなく、セツキシマブに敏感性を持つCaCo-2大腸ガン細胞株に、RONの活性化型であるΔ160遺伝子を過発現させ、コロニー形成(colony formation)方法でセツキシマブに対する細胞成長を観察した。
本発明者等は、RONが活性化されており、セツキシマブに抵抗性を持つKM12C大腸ガン細胞株に、RONをCRISPR/Cas9技法を用いて、RON遺伝子をノックアウト(Knockout)させた細胞株を製作し、セツキシマブに対する細胞死滅と細胞成長の分析をするために、RONノックアウトの効率の良い#1クローン(clone)に、セツキシマブを濃度別に処理して細胞死滅を観察した。
本発明者等は、RONが活性化されており、セツキシマブに抵抗性を持つKM12C大腸ガン細胞株に、RONをCRISPR/Cas9技法を用いてRON遺伝子をノックアウトさせた細胞株を用いて、セツキシマブに対する細胞成長をコロニー形成方法で観察した。
本発明者等は、RONが活性化されており、セツキシマブに抵抗性を持つKM12C大腸ガン細胞株に、RONをCRISPR/Cas9 技法を用いてRON遺伝子をノックアウトさせた細胞株を用いたインビボ異種移植モデルにおいて、セツキシマブによる腫瘍抑制の効能を観察した。
本発明者等は、RON抗体抗ガン剤とセツキシマブとの併用処理による細胞死滅誘導を確認した。
本発明者等は、セツキシマブ反応性の有無とRON活性との関係を分析した。
Claims (11)
- 大腸がんにおける、セツキシマブ(cetuximab)に対する感受性の予測のための組成物であって、
前記組成物が、
RON(recepteur d’origine nantais、遺伝子銀行登載番号NM_002447.1)遺伝子、ならびに、
KRAS(V−Ki−ras2 Kirsten rat sarcoma viral oncogene homolog、遺伝子銀行(Gene Bank)登載番号NM_033360.2)、
NRAS(neuroblastoma RAS viral (v−ras) oncogene homolog、遺伝子銀行登載番号NP_002515.1)、
BRAF(v−raf murine sarcoma viral oncogene homolog B、 遺伝子銀行登載番号NP_004324.2)、
EGFR(Epidermal Growth Factor Receptor、遺伝子銀行登載番号U48722.1)、
Adam11(ADAM metallopeptidase domain 11、遺伝子銀行登載番号NM_002390.4)、
Adam32(ADAM metallopeptidase domain 32、遺伝子銀行登載番号NM_145004.5)、
FZD4(Frizzled family receptor 4、遺伝子銀行登載番号NM_012193.2)、
GPER(G protein−coupled estrogen receptor 1、NM_001505.2)、及び、
GPR101(G protein−coupled receptor 101、遺伝子銀行登載番号NM_054021.1)からなる群より選択される1以上の遺伝子のタンパク質の活性水準を測定する製剤を含み、
RON遺伝子のタンパク質の活性水準の前記測定はRON遺伝子のタンパク質のリン酸化を測定することであり、RON遺伝子のタンパク質がリン酸化されると、セツキシマブに対する耐性があると判定され、又はRON遺伝子のタンパク質がリン酸化されないと、セツキシマブに対する感受性があると判定される、組成物。 - 前記タンパク質の活性水準を測定する製剤が、前記タンパク質に特異的に結合する、抗体、ペプチド又はヌクレオチドを含むことを特徴とする、請求項1に記載の大腸がんにおけるセツキシマブに対する感受性の予測のための組成物。
- 請求項1又は2に記載の組成物を含む、大腸がんにおけるセツキシマブに対する感受性の予測のためのキット。
- 大腸がんに罹患した対象のセツキシマブに対する感受性増進剤であって、
前記感受性増進剤は、RON(recepteur d’origine nantais、遺伝子銀行(Gene Bank)登載番号NM_002447.1)遺伝子の発現水準;又は、前記遺伝子のタンパク質の発現或いは活性水準を抑制する抑制剤を有効成分として含み、
前記対象の、
KRAS(V−Ki−ras2 Kirsten rat sarcoma viral oncogene homolog、遺伝子銀行(Gene Bank)登載番号NM_033360.2)、
NRAS(neuroblastoma RAS viral (v−ras) oncogene homolog、 遺伝子銀行登載番号NP_002515.1)、又は、
BRAF(v−raf murine sarcoma viral oncogene homolog B、 遺伝子銀行登載番号NP_004324.2)の遺伝子が野生型であることを特徴とする、感受性増進剤。 - 前記抑制剤は、siRNA(small interference RNA)、shRNA(short hairpin RNA)、miRNA(microRNA)、リボザイム(ribozyme)、DNAzyme、PNA(peptide nucleic acids)、アンチセンスオリゴヌクレオチド、抗体、アブタマー、天然抽出物及び化学物質からなる群より選択された1種以上であることを特徴とする、請求項4に記載の感受性増進剤。
- 前記siRNAは、配列番号13の塩基配列を含むことを特徴とする、請求項5に記載の感受性増進剤。
- (a)大腸がんに罹患した対象から生物学的試料を用意する段階;
(b)前記生物学的試料内のRON(recepteur d’origine nantais、遺伝子銀行(Gene Bank)登載番号NM_002447.1)遺伝子のタンパク質の活性水準を測定する段階;
(c)前記生物学的試料内の、
KRAS(V−Ki−ras2 Kirsten rat sarcoma viral oncogene homolog、遺伝子銀行(Gene Bank)登載番号NM_033360.2)、
NRAS(neuroblastoma RAS viral (v−ras) oncogene homolog、 遺伝子銀行登載番号NP_002515.1)、
BRAF(v−raf murine sarcoma viral oncogene homolog B、遺伝子銀行登載番号NP_004324.2)、
EGFR(Epidermal Growth Factor Receptor、遺伝子銀行登載番号U48722.1)、
Adam11(ADAM metallopeptidase domain 11、遺伝子銀行登載番号NM_002390.4)、
Adam32(ADAM metallopeptidase domain 32、遺伝子銀行登載番号NM_145004.5)、
FZD4(Frizzled family receptor 4、遺伝子銀行登載番号NM_012193.2)、
GPER(G protein−coupled estrogen receptor 1、 NM_001505.2)、及び、
GPR101(G protein−coupled receptor 101、 遺伝子銀行登載番号NM_054021.1)遺伝子からなる群より選択された1種以上の遺伝子の発現水準;又は、前記遺伝子のタンパク質の発現或いは活性水準を測定する段階;ならびに、
(d)前記(b)及び(c)段階で測定した水準確認の結果に基づいて、大腸がんに罹患した前記対象のセツキシマブに対する感受性又は抵抗性を判定する段階を含み、
RON遺伝子のタンパク質の活性水準の前記測定は、RON遺伝子のタンパク質のリン酸化を測定することであり、RON遺伝子のタンパク質がリン酸化されると、セツキシマブに対する耐性があると判定され、又はRON遺伝子のタンパク質がリン酸化されないと、セツキシマブに対する感受性があると判定される、セツキシマブに対する感受性予測方法。 - 前記(c)段階において、前記対象の、
KRAS(V−Ki−ras2 Kirsten rat sarcoma viral oncogene homolog、遺伝子銀行(Gene Bank)登載番号NM_033360.2)、
NRAS(neuroblastoma RAS viral (v−ras) oncogene homolog、 遺伝子銀行登載番号NP_002515.1)、又は
BRAF(v−raf murine sarcoma viral oncogene homolog B、遺伝子銀行登載番号NP_004324.2)の遺伝子が野生型である、請求項7に記載の方法。 - 前記Adam11、Adam32、FZD4、GPER及びGPR101遺伝子からなる群より選択された1種以上の遺伝子の発現水準;又は、前記遺伝子のタンパク質の発現或いは活性水準が、正常水準に比べて低発現又は低活性である場合、大腸がんに罹患した対象は、セツキシマブに対する感受性があると判定することを特徴とする、請求項7に記載の方法。
- 前記RON遺伝子のタンパク質の活性水準の測定が、前記遺伝子のスプライシング変異体(Splicing variant)又は突然変異(Mutant)の存在の有無の測定をさらに含むことを特徴とする、請求項7〜9のいずれか一項に記載の方法。
- 請求項4〜6のいずれか一項に記載の感受性増進剤及びセツキシマブを有効成分として含む、大腸がんの予防又は治療用薬学的組成物。
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JP2023516381A (ja) * | 2020-03-03 | 2023-04-19 | ウェルマーカー・バイオ・カンパニー・リミテッド | Kras変異および活性化ronが存在する癌の予防または治療のための医薬組成物 |
EP4154890A4 (en) * | 2020-05-18 | 2023-12-06 | Wellmarker Bio Co., Ltd. | PHARMACEUTICAL COMPOSITION FOR THE PREVENTION OR TREATMENT OF PANCREATIC CANCER ASSOCIATED WITH RON MUTATION AND METHOD USING SAME |
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EP1636380A2 (en) * | 2003-05-30 | 2006-03-22 | Genomic Health, Inc. | Gene expression markers for response to egfr inhibitor drugs |
JP5567757B2 (ja) * | 2005-07-29 | 2014-08-06 | 大鵬薬品工業株式会社 | 抗癌剤投与後の大腸癌患者の予後予測方法 |
UY31478A1 (es) * | 2007-11-21 | 2009-07-17 | Inhibicion del receptor para la proteina estimulante del macrofago (ron) y métodos para el tratamiento de lo mismo | |
US20120107304A1 (en) * | 2010-04-27 | 2012-05-03 | Boehringer Ingelheim International Gmbh | Combination therapy in treatment of oncological and fibrotic diseases |
JP2013537966A (ja) * | 2010-08-31 | 2013-10-07 | ジェネンテック, インコーポレイテッド | バイオマーカー及び治療の方法 |
SG11201400996SA (en) * | 2011-09-30 | 2014-04-28 | Genentech Inc | Diagnostic methylation markers of epithelial or mesenchymal phenotype and response to egfr kinase inhibitor in tumours or tumour cells |
JP6779858B2 (ja) | 2014-07-29 | 2020-11-04 | ウェルマーカー バイオ カンパニー リミテッド | Egfr−標的製剤に対する感受性予測用の新規なバイオマーカー及びその用途 |
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JP2020178706A (ja) * | 2014-07-29 | 2020-11-05 | ウェルマーカー バイオ カンパニー リミテッド | Egfr−標的製剤に対する感受性予測用の新規なバイオマーカー及びその用途 |
JP7369672B2 (ja) | 2014-07-29 | 2023-10-26 | ウェルマーカー バイオ カンパニー リミテッド | Egfr-標的製剤に対する感受性予測用の新規なバイオマーカー及びその用途 |
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CN107517590A (zh) | 2017-12-26 |
WO2016018087A1 (ko) | 2016-02-04 |
JP2020178706A (ja) | 2020-11-05 |
US20190127802A1 (en) | 2019-05-02 |
KR101942890B1 (ko) | 2019-01-28 |
US20210292849A1 (en) | 2021-09-23 |
CN107517590B (zh) | 2021-11-12 |
US20210292848A1 (en) | 2021-09-23 |
JP2017529065A (ja) | 2017-10-05 |
EP3176268A1 (en) | 2017-06-07 |
KR20160014563A (ko) | 2016-02-11 |
US11008622B2 (en) | 2021-05-18 |
KR20180034366A (ko) | 2018-04-04 |
EP3176268B1 (en) | 2019-07-17 |
JP7369672B2 (ja) | 2023-10-26 |
ES2750832T3 (es) | 2020-03-27 |
EP3176268A4 (en) | 2018-03-07 |
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