Combination of 5-aza-2'-deoxycytidine and trichostatin A synergistically increased chemosensitivity of human gastric cancer cells to anticancer drugs
- VernacularTitle:5-氮杂-2′-脱氧胞苷联合曲古菌素A对人胃癌细胞株化疗敏感性的协同增强作用
- Author:
Xiaotian ZHANG
;
Jun REN
- Publication Type:Journal Article
- Keywords:
stomach neoplasms;
5-aza-2'-deoxycytidine;
trichostatin A;
drug therapy
- From:
Medical Journal of Chinese People's Liberation Army
1983;0(02):-
- CountryChina
- Language:Chinese
-
Abstract:
s Objective To observe the enhancement of sensitivity of human gastric cancer cell MKN-74 to anticancer drugs by administration of 5-aza-2'-deoxycytidine(5-Aza-CdR)and trichostatin A(TSA)with anticancer drugs.Methods Growth inhibition of MKN-74 with treatment of 5-Aza-CdR and/or TSA together with anticancer drugs,including fluorouracil(5-FU),paclitaxel(PTX),oxaliplatin(OXA),SN38 or gemcitabine(GEM),was detected by MTT method.Induction of apoptosis was analyzed by flow cytometry.Expressions of p21,caspase3,Rb and p16 gene were studied by RT-PCR.The gray scale of the genes was analyzed by gel analysis software Bandscan 4.3,and the ratio of gray scale of targeted genes and GAPDH gene were calculated.Results Compared with 5-Aza-CdR alone,combined administration of 5-Aza-CdR and TSA enhanced the chemosensitivity of MKN-74 to 5-FU,PTX,OXA and GEM.Compared with TSA alone,the combined administration enhanced its osensitivity to OXA and GEM.The apoptosis rates in MKN-74 cells in TSA+OXA group,5-Aza-CdR+OXA group and 5-Aza-CdR+TSA+OXA group were 28.067%,25.333% and 38.367%,respectively(P
