发给老马备查: + V, V5 {0 L$ H8 y, M滴水察海(69304838) 15:23:23( U( { w. x5 T3 q% \$ v+ j1 A" w
老马,我看到培美和S-1都提到TS低表达,而鳞多半不是低表达,是不是S-1不靠谱 0 K4 X; ^5 _; O. e$ M) `$ |# Q! A吉非替尼和S-1连用的依据9 J4 Q/ i5 ]& h6 x) x- }3 k5 B
Gefitinib induced down-regulation of thymidylate synthase and E2F-1 in gefitinib-resistant NSCLC cells with MET amplification but not in those harboring the T790M mutation of EGFR. The combination of 5-fluorouracil and gefitinib synergistically inhibited the proliferation of cells with MET amplification, but not that of those with the T790M mutation of EGFR, in vitro.! p8 N4 |/ k G% }6 v' \0 J
是不是说因C-MET引起的耐药中,吉非替尼会引导TS低表达 * [, H5 F" k4 Y- y这样是不是推理出,耐药后,可以用S-1和培美了? 8 Z2 `& y& z/ Y7 w7 z6 J结论:! n0 z+ Z( @. j+ U& k
如果是T790M突变引起的耐药,则2992有效,如果是C-MET扩增引起的突变,则除了184,还可以特+S1联用,而且可能可以用培美。