Chinese herbs of Shenghe Powder reverse multidrug resistance of gastric carcinoma SGC-7901.
The objective of this study was to investigate the reversal effect of Chinese herbs of Shenghe Powder on the multidrug resistance of the human SGC-7901 gastric carcinoma cell line and vincristine-resistant cell line (SGC-7901/vincristine) and the possible mechanism. SGC-7901 and SGC-7901/ vincristine were cultured in liquid medium RMPI 1640, with the addition of vincristine to the vincristine-resistant line. The reversal effect of Shenghe Powder (using verapamil as control) on the multidrug resistance of SGC-7901/vincristine cells was observed using the 3-4,5-dimethylthiazol-2yl) -2,5-diphenylterazolium bromide method. The expression rate of P-glycoprotein (P-gp), lymphoma/leukemia-2 (Bcl-2), and apoptosis ratio of SGC-7901 and SGC-7901/vincristine with added Shenghe Powder, verapamil, or verapamil plus Shenghe Powder was observed by flow cytometry. Shenghe Powder and verapamil decreased the multidrug resistance of SGC-7901/vincristine. The effect of Shenghe Powder (10 mg/L) was significantly higher than verapamil (P< .05). The intracellular concentration of vincristine was increased by Shenghe Powder and verapamil. The vincristine concentration of SGC-7901/vincristine treated with Shenghe Powder was significantly higher (P< .05). Shenghe Powder reduced the expression level of P-gp and Bcl-2 in SGC-7901/ vincristine and increased the apoptotic percentage of tumor cells; Shenghe Powder had the more significant effect on apoptosis (P< .05). In conclusion, Shenghe Powder increases the intracellular concentration of vincristine, consistent with the down-regulation of the expression of P-gp and Bcl-2. The reversal effect of Shenghe Powder was stronger than that of verapamil.
Fifth Staff Hospital, General Service Ministry of Chinese PLA, Wenxi, Shanxi Province, China.
Jianhua
J
Wang
Yuesheng
Y
Xia
Huan
H
Wang
Zengxia
Z
Hou
D020168:ATP Binding Cassette Transporter, Subfamily B, Member 1 / Q000378:metabolism; D017209:Apoptosis / Q000187:drug effects; D045744:Cell Line, Tumor; D002470:Cell Survival / Q000187:drug effects; D004305:Dose-Response Relationship, Drug; D018432:Drug Resistance, Multiple / Q000187:drug effects*; D019008:Drug Resistance, Neoplasm / Q000187:drug effects*; D004365:Drugs, Chinese Herbal / Q000378:metabolism / Q000494:pharmacology*; D006801:Humans; D042541:Intracellular Space / Q000378:metabolism; D011208:Powders; D019253:Proto-Oncogene Proteins c-bcl-2 / Q000378:metabolism; D013274:Stomach Neoplasms / Q000378:metabolism / Q000473:pathology; D014700:Verapamil / Q000378:metabolism / Q000494:pharmacology; D014750:Vincristine / Q000378:metabolism / Q000494:pharmacology
D020168:ATP Binding Cassette Transporter, Subfamily B, Member 1; D004365:Drugs, Chinese Herbal; D011208:Powders; D019253:Proto-Oncogene Proteins c-bcl-2; C527025:shenghe; D014750:Vincristine; D014700:Verapamil