JPWO2019045036A1 - エクソン18及び/又はエクソン21変異型egfr選択的阻害剤 - Google Patents
エクソン18及び/又はエクソン21変異型egfr選択的阻害剤 Download PDFInfo
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Abstract
Description
[Xは任意のアミノ酸残基を示す。]
[Xは任意のアミノ酸残基を示す。]
[Xは任意のアミノ酸残基を示す。]
[Xは任意のアミノ酸残基を示す。]
[Xは任意のアミノ酸残基を示す。]
[Xは任意のアミノ酸残基を示す。]
(1)当該患者から採取された生体試料に含まれるEGFR遺伝子の変異の有無を検出する工程、及び
(2)上記工程(1)における検出の結果、EGFR遺伝子がエクソン18のG719X変異、エクソン18のE709X変異及びエクソン21のL861X変異からなる群から選択される少なくとも1つの変異を有している場合、当該患者に対する当該化学療法が十分な治療効果を示す可能性が高いと予測する工程。
[Xは任意のアミノ酸残基を示す。]
(1)当該患者から採取された生体試料に含まれるEGFR遺伝子の変異の有無を検出する工程、及び
(2)上記工程(1)における検出の結果、EGFR遺伝子がエクソン18のG719X変異、エクソン18のE709X変異及びエクソン21のL861X変異からなる群から選択される少なくとも1つの変異を有している場合、当該患者に対する(S)−N−(4−アミノ−6−メチル−5−(キノリン−3−イル)−8,9−ジヒドロピリミド[5,4−b]インドリジン−8−イル)アクリルアミド又はその塩を有効成分とする抗腫瘍剤を用いた化学療法が十分な治療効果を示す可能性が高いと予測する工程、及び
(3)上記工程(2)において(S)−N−(4−アミノ−6−メチル−5−(キノリン−3−イル)−8,9−ジヒドロピリミド[5,4−b]インドリジン−8−イル)アクリルアミド又はその塩を有効成分とする抗腫瘍剤を用いた化学療法が十分な治療効果を示す可能性が高いと予測された悪性腫瘍患者に、(S)−N−(4−アミノ−6−メチル−5−(キノリン−3−イル)−8,9−ジヒドロピリミド[5,4−b]インドリジン−8−イル)アクリルアミド又はその塩を投与する工程。
[Xは任意のアミノ酸残基を示す。]
本発明の化合物Aは、例えば、WO2015/025936A1号公報に記載された製造法又は実施例に示す方法等により製造することができる。ただし、本発明化合物の製造法はこれら反応例に限定されるものではない。
本発明の対象となる腫瘍は特に制限はされないが、例えば、頭頚部癌、消化器癌(食道癌、胃癌、十二指腸癌、肝臓癌、胆道癌(胆嚢・胆管癌等)、膵臓癌、結腸直腸癌(結腸癌、直腸癌等)等)、肺癌(非小細胞肺癌、小細胞肺癌、中皮腫等)、乳癌、生殖器癌(卵巣癌、子宮癌(子宮頚癌、子宮体癌等)等)、泌尿器癌(腎癌、膀胱癌、前立腺癌、精巣腫瘍等)、造血器腫瘍(白血病、悪性リンパ腫、多発性骨髄腫等)、骨・軟部腫瘍、皮膚癌、脳腫瘍等が挙げられる。好ましくは、肺癌、乳癌、頭頸部癌、脳腫瘍、子宮癌、消化器癌、造血器腫瘍、又は皮膚癌であり、特に好ましくは肺癌である。
(1)当該患者から採取された生体試料に含まれるEGFR遺伝子の変異の有無を検出する工程、及び
(2)上記工程(1)における検出の結果、EGFR遺伝子がエクソン18及び/又はエクソン21変異を有している場合、当該患者に対する当該化学療法が十分な治療効果を示す可能性が高いと予測する工程。
(1)当該患者から採取された生体試料に含まれるEGFR遺伝子の変異の有無を検出する工程、及び
(2)上記工程(1)における検出の結果、EGFR遺伝子がエクソン18及び/又はエクソン21変異を有している場合、当該患者に対する(S)−N−(4−アミノ−6−メチル−5−(キノリン−3−イル)−8,9−ジヒドロピリミド[5,4−b]インドリジン−8−イル)アクリルアミド又はその塩を有効成分とする抗腫瘍剤を用いた化学療法が十分な治療効果を示す可能性が高いと予測する工程、及び
(3)上記工程(2)において(S)−N−(4−アミノ−6−メチル−5−(キノリン−3−イル)−8,9−ジヒドロピリミド[5,4−b]インドリジン−8−イル)アクリルアミド又はその塩を有効成分とする抗腫瘍剤を用いた化学療法が十分な治療効果を示す可能性が高いと予測された悪性腫瘍患者に、(S)−N−(4−アミノ−6−メチル−5−(キノリン−3−イル)−8,9−ジヒドロピリミド[5,4−b]インドリジン−8−イル)アクリルアミド又はその塩を投与する工程。
HEK293細胞を用いた変異型EGFR強制発現系における細胞内リン酸化評価結果(阻害活性)
化合物の細胞内標的阻害活性は、Jump−In(商標) Grip(商標) HEK293細胞(Thermo Fisher Scientific Inc.)(以下、「HEK293細胞」とも称す)を用いた変異型EGFR強制発現系における細胞内EGFRリン酸化を指標に評価した。HEK293細胞は、10% 透析 ウシ胎児血清(dialyzed FBS)及び100U/mL ペニシリン/100μg/mL ストレプトマイシン(Thermo Fisher Scientific Inc.)を含むD−MEM with GlutaMAX(商標)−I(High glucose)(Thermo Fisher Scientific Inc.)にて維持し、ヒトEGFR遺伝子(G719A、G719S、G719C、E709K、E709A、L861Q、G719A+T790M(+は両方の変異を有することを示す。)、L861Q+T790M)をコードしたpJTITMR4 DEST CMV pAベクターをOpti−MEM(商標) I(Thermo Fisher Scientific Inc.)と共にViaFect(商標) Transfection Reagent(プロメガ株式会社)を用いて導入した。変異型ヒトEGFRを発現したHEK293細胞を、384ウェル平底マイクロプレートの各ウェルに1ウェルあたりの細胞数が10,000個になるように播種し、5%炭酸ガス含有の培養器中37℃で1日培養した。化合物A、エルロチニブ、アファチニブ及びオシメルチニブ(以下、「比較化合物」とも称する)をDMSOに溶解し、DMSOもしくは各細胞の懸濁に用いた培地を用いて希釈し、これを細胞の培養プレートの各ウェルに加え、5%炭酸ガス含有の培養器中37℃で6時間培養した。培養後、20% 中性緩衝ホルマリン液(和光純薬工業株式会社)を用いて細胞を固定し、ODYSSEY(商標) Blocking Buffer(PBS)(M&S TechnoSystems Inc.)により細胞をブロッキングした後、ODYSSEY(商標) Blocking Buffer(PBS)を用いて200分の1に希釈した一次抗体(EGFR Monoclonal Antibody(R19/48MIX)#AHR5062(Thermo Fisher Scientific Inc.)及びPhospho−EGFR Receptor(Tyr1068)Antibody#2234L(CST))に反応させ4℃で一晩浸透した。翌日、ODYSSEY(商標) Blocking Buffer(PBS)を用いて800分の1に希釈した二次抗体(IRDye 800CW Goat aRabbit#926−32211及びIRDye 680RD Goat aMouse#926−68070(M&S TechnoSystems Inc.))に反応させ室温で1時間浸透した。蛍光強度(Fluorescence intensity:以下「FI」とも称す)の検出は、Odyssay Infrared Imaging System(LI−COR Bioscience) を用いて、蛍光波長800nm及び700nmで測定した。
T:被検化合物を添加したウェルのFI(p−EGFR/EGFR)
C:被検化合物を添加しなかったウェルのFI(p−EGFR/EGFR)。
野生型及び変異型EGFR発現細胞株に対する細胞増殖抑制効果の評価(in vitro)
化合物の野生型EGFR及び変異型EGFRに対する阻害活性は、ヒトEGFR遺伝子を導入したマウスBリンパ球前駆細胞株であるBa/F3細胞を用いて行った。Ba/F3細胞は10%ウシ胎児血清(FBS)、100U/mL ペニシリン/100μg/mL ストレプトマイシン(Thermo Fisher Scientific Inc.)及び1ng/mL マウスインターロイキン−3(mIL−3)(CST)を含むRPMI−1640培地(Thermo Fisher Scientific Inc.)にて維持し、ヒトEGFR遺伝子(野生型(WT)、G719A、L861Q)をコードしたPB−CMV−MCS−EF1−GFP+PuroベクターもしくはPB−CMV−MCS−EF1−RFP+PuroベクターをSuper PiggyBacTransposase発現ベクターと共にAmaxa(商標) Cell Line Nucleofector (商標) Kit Vによる電気穿孔法により導入した後ピューロマイシン(SIGMA)にて選択した。野生型EGFRを発現したBa/F3細胞(以下、「Ba/F3―EGFR_WT」とも称する)は50ng/mL EGF(R&Dシステムズ)存在下でmIL−3非依存的な増殖を示し、又エクソン18及びエクソン21活性変異型EGFRを発現したBa/F3細胞(以下、「Ba/F3−EGFR G719A」、「Ba/F3−EGFR L861Q」)はEGF非存在下でmIL−3非依存的な増殖を示した。
T:被検化合物を添加したウェルの発光強度
C:被検化合物を添加しなかったウェルの発光強度。
G719A変異型EGFR発現細胞株マウス皮下移植モデルを用いた抗腫瘍効果の評価 G719A変異型EGFR発現細胞株のマウス皮下移植モデルを用いた評価では、ヒトEGFR遺伝子を導入したマウス線維芽細胞株であるNIH−3T3細胞を用いて行った。NIH−3T3細胞は10%ウシ新生児血清(NBCS)、1,500mg/L炭酸水素ナトリウム、100U/mL ペニシリン/100μg/mL ストレプトマイシン(Thermo Fisher Scientific Inc.)を含むD−MEM(高グルコース)培地(和光純薬)にて維持し、ヒトEGFR遺伝子(G719A)をコードしたPB−CMV−MCS−EF1−RFP+PuroベクターをSuper PiggyBacTransposase発現ベクターと共にAmaxa(商標) Cell Line Nucleofector(商標) Kit Rによる電気穿孔法により導入した後ピューロマイシン(SIGMA)にて選択した。エクソン18変異型EGFRを発現したNIH−3T3細胞(以下、「NIH3T3−EGFR G719A」とも称する)は1%NBCS条件下かつEGF非存在下で増殖を示した。
T790M変異型EGFR発現細胞株に対する細胞増殖抑制効果の評価(in vitro)
化合物のT790M変異型EGFRに対する阻害活性は、ヒトEGFR遺伝子を導入したマウスBリンパ球前駆細胞株であるBa/F3細胞を用いて行った。Ba/F3細胞は10%ウシ胎児血清(FBS)、100U/mL ペニシリン/100μg/mL ストレプトマイシン(Thermo Fisher Scientific Inc.)及び1ng/mL マウスインターロイキン−3(mIL−3)(CST)を含むRPMI−1640培地(Thermo Fisher Scientific Inc.)にて維持し、ヒトEGFR遺伝子(野生型(WT)、G719A+T790M、L861Q+T790M)をコードしたPB−CMV−MCS−EF1−GFP+PuroベクターもしくはPB−CMV−MCS−EF1−RFP+PuroベクターをSuper PiggyBacTransposase発現ベクターと共にAmaxa(商標) Cell Line Nucleofector (商標) Kit Vによる電気・孔法により導入した後ピューロマイシン(SIGMA)にて選択した。G719A+T790M及びL861Q+T790M変異型EGFRを発現したBa/F3細胞(以下、「Ba/F3−EGFR G719A+T790M」、「Ba/F3−EGFR L861Q+T790M」)はEGF非存在下でmIL−3非依存的な増殖を示した。
T:被検化合物を添加したウェルの発光強度
C:被検化合物を添加しなかったウェルの発光強度
G719A+T790M変異型EGFR発現細胞株マウス皮下移植モデルを用いた抗腫瘍効果の評価
G719A+T790M変異型EGFR発現細胞株のマウス皮下移植モデルを用いた評価では、ヒトEGFR遺伝子を導入したマウス線維芽細胞株であるNIH−3T3細胞を用いて行った。NIH−3T3細胞は10%ウシ新生児血清(NBCS)、1,500mg/L炭酸水素ナトリウム、100U/mL ペニシリン/100μg/mL ストレプトマイシン(Thermo Fisher Scientific Inc.)を含むD−MEM(高グルコース)培地(和光純薬)にて維持し、ヒトEGFR遺伝子(G719A+T790M)をコードしたPB−CMV−MCS−EF1−RFP+PuroベクターをSuper PiggyBacTransposase発現ベクターと共にAmaxa(商標) Cell Line Nucleofector(商標) Kit Rによる電気・孔法により導入した後ピューロマイシン(SIGMA)にて選択した。エクソン18変異型EGFRを発現したNIH−3T3細胞(以下、「NIH3T3−EGFR G719A+T790M」とも称する)は1%NBCS条件下かつEGF非存在下で増殖を示した。
BWC(%)=(体重測定日の体重)/(群分け時の体重)。
Claims (32)
- (S)−N−(4−アミノ−6−メチル−5−(キノリン−3−イル)−8,9−ジヒドロピリミド[5,4−b]インドリジン−8−イル)アクリルアミド又はその塩を含有する、エクソン18のG719X変異、エクソン18のE709X変異及びエクソン21のL861X変異からなる群から選択される少なくとも1つの変異を有するEGFRを発現している悪性腫瘍患者を治療するための抗腫瘍剤。
[Xは任意のアミノ酸残基を示す。] - エクソン18変異が、G719A、G719S、G719C、E709K及びE709Aからなる群から選択される少なくとも1つの変異である、請求項1に記載の抗腫瘍剤。
- エクソン21変異が、L861Qである、請求項1又は2に記載の抗腫瘍剤。
- EGFRが更にT790M変異を有する、請求項1〜3のいずれか一項に記載の抗腫瘍剤。
- エクソン18のG719X変異、エクソン18のE709X変異及びエクソン21のL861X変異からなる群から選択される少なくとも1つの変異を有するEGFRを発現している悪性腫瘍患者に(S)−N−(4−アミノ−6−メチル−5−(キノリン−3−イル)−8,9−ジヒドロピリミド[5,4−b]インドリジン−8−イル)アクリルアミド又はその塩を投与する工程を含む、悪性腫瘍患者の治療方法。
[Xは任意のアミノ酸残基を示す。] - エクソン18変異が、G719A、G719S、G719C、E709K及びE709Aからなる群から選択される少なくとも1つの変異である、請求項5に記載の治療方法。
- エクソン21変異が、L861Qである、請求項5又は6に記載の治療方法。
- EGFRが更にT790M変異を有する、請求項5〜7のいずれか一項に記載の治療方法。
- エクソン18のG719X変異、エクソン18のE709X変異及びエクソン21のL861X変異からなる群から選択される少なくとも1つの変異を有するEGFRを発現している悪性腫瘍患者を治療するための、(S)−N−(4−アミノ−6−メチル−5−(キノリン−3−イル)−8,9−ジヒドロピリミド[5,4−b]インドリジン−8−イル)アクリルアミド又はその塩。
[Xは任意のアミノ酸残基を示す。] - エクソン18変異が、G719A、G719S、G719C、E709K及びE709Aからなる群から選択される少なくとも1つの変異である、請求項9に記載の(S)−N−(4−アミノ−6−メチル−5−(キノリン−3−イル)−8,9−ジヒドロピリミド[5,4−b]インドリジン−8−イル)アクリルアミド又はその塩。
- エクソン21変異が、L861Qである、請求項9又は10に記載の(S)−N−(4−アミノ−6−メチル−5−(キノリン−3−イル)−8,9−ジヒドロピリミド[5,4−b]インドリジン−8−イル)アクリルアミド又はその塩。
- EGFRが更にT790M変異を有する、請求項9〜11のいずれか一項に記載の(S)−N−(4−アミノ−6−メチル−5−(キノリン−3−イル)−8,9−ジヒドロピリミド[5,4−b]インドリジン−8−イル)アクリルアミド又はその塩。
- (S)−N−(4−アミノ−6−メチル−5−(キノリン−3−イル)−8,9−ジヒドロピリミド[5,4−b]インドリジン−8−イル)アクリルアミド又はその塩の、エクソン18のG719X変異、エクソン18のE709X変異及びエクソン21のL861X変異からなる群から選択される少なくとも1つの変異を有するEGFRを発現している悪性腫瘍患者を治療するための使用。
[Xは任意のアミノ酸残基を示す。] - エクソン18変異が、G719A、G719S、G719C、E709K及びE709Aからなる群から選択される少なくとも1つの変異である、請求項13に記載の使用。
- エクソン21変異が、L861Qである、請求項13又は14に記載の使用。
- EGFRが更にT790M変異を有する、請求項13〜15のいずれか一項に記載の使用。
- (S)−N−(4−アミノ−6−メチル−5−(キノリン−3−イル)−8,9−ジヒドロピリミド[5,4−b]インドリジン−8−イル)アクリルアミド又はその塩の、エクソン18のG719X変異、エクソン18のE709X変異及びエクソン21のL861X変異からなる群から選択される少なくとも1つの変異を有するEGFRを発現している悪性腫瘍患者を治療するための医薬を製造するための使用。
[Xは任意のアミノ酸残基を示す。] - エクソン18変異が、G719A、G719S、G719C、E709K及びE709Aからなる群から選択される少なくとも1つの変異である、請求項17に記載の使用。
- エクソン21変異が、L861Qである、請求項17又は18に記載の使用。
- EGFRが更にT790M変異を有する、請求項17〜19のいずれか一項に記載の使用。
- (S)−N−(4−アミノ−6−メチル−5−(キノリン−3−イル)−8,9−ジヒドロピリミド[5,4−b]インドリジン−8−イル)アクリルアミド又はその塩及び薬学的に許容できる担体を含む、エクソン18のG719X変異、エクソン18のE709X変異及びエクソン21のL861X変異からなる群から選択される少なくとも1つの変異を有するEGFRを発現している悪性腫瘍患者を治療するための、医薬組成物。
[Xは任意のアミノ酸残基を示す。] - エクソン18変異が、G719A、G719S、G719C、E709K及びE709Aからなる群から選択される少なくとも1つの変異である、請求項21に記載の医薬組成物。
- エクソン21変異が、L861Qである、請求項21又は22に記載の医薬組成物。
- EGFRが更にT790M変異を有する、請求項21〜23のいずれか一項に記載の医薬組成物。
- 下記工程(1)〜(2)を含む、悪性腫瘍患者における(S)−N−(4−アミノ−6−メチル−5−(キノリン−3−イル)−8,9−ジヒドロピリミド[5,4−b]インドリジン−8−イル)アクリルアミド又はその塩を有効成分とする抗腫瘍剤を用いた化学療法の治療効果を予測する方法:
(1)当該患者から採取された生体試料に含まれるEGFR遺伝子の変異の有無を検出する工程、及び
(2)上記工程(1)における検出の結果、EGFR遺伝子がエクソン18のG719X変異、エクソン18のE709X変異及びエクソン21のL861X変異からなる群から選択される少なくとも1つの変異を有している場合、当該患者に対する当該化学療法が十分な治療効果を示す可能性が高いと予測する工程。
[Xは任意のアミノ酸残基を示す。] - エクソン18変異が、G719A、G719S、G719C、E709K及びE709Aからなる群から選択される少なくとも1つの変異である、請求項25に記載の方法。
- エクソン21変異が、L861Qである、請求項25又は26に記載の方法。
- EGFRが更にT790M変異を有する、請求項25〜27のいずれか一項に記載の方法。
- 下記工程(1)〜(3)を含む、悪性腫瘍患者の治療方法:
(1)当該患者から採取された生体試料に含まれるEGFR遺伝子の変異の有無を検出する工程、及び
(2)上記工程(1)における検出の結果、EGFR遺伝子がエクソン18のG719X変異、エクソン18のE709X変異及びエクソン21のL861X変異からなる群から選択される少なくとも1つの変異を有している場合、当該患者に対する(S)−N−(4−アミノ−6−メチル−5−(キノリン−3−イル)−8,9−ジヒドロピリミド[5,4−b]インドリジン−8−イル)アクリルアミド又はその塩を有効成分とする抗腫瘍剤を用いた化学療法が十分な治療効果を示す可能性が高いと予測する工程、及び
(3)上記工程(2)において(S)−N−(4−アミノ−6−メチル−5−(キノリン−3−イル)−8,9−ジヒドロピリミド[5,4−b]インドリジン−8−イル)アクリルアミド又はその塩を有効成分とする抗腫瘍剤を用いた化学療法が十分な治療効果を示す可能性が高いと予測された悪性腫瘍患者に、(S)−N−(4−アミノ−6−メチル−5−(キノリン−3−イル)−8,9−ジヒドロピリミド[5,4−b]インドリジン−8−イル)アクリルアミド又はその塩を投与する工程。
[Xは任意のアミノ酸残基を示す。] - エクソン18変異が、G719A、G719S、G719C、E709K及びE709Aからなる群から選択される少なくとも1つの変異である、請求項29に記載の方法。
- エクソン21変異が、L861Qである、請求項29又は30に記載の方法。
- EGFRが更にT790M変異を有する、請求項29〜31のいずれか一項に記載の方法。
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