Objective: To evaluate the relationship between expression of FOLR and gene polymorphism of MTHFR and drug resistance of breast cancer cells. Methods: FAC test cell cycle under treatment of folic acid of different concentration. mRNA level of FOLR and mdr- 1 were tested by RT- PCR. Gene polymorphism of C677 T and A1298 C sites in MTHFR were tested by PCR- RFLP. Results: Treating MCF- 7 cells and MCF- 7 / ADR cells with folic acid,when folic acid at or above 270 nmol / L,the ratio of MCF- 7 and MCF- 7 / ADR ...
Modern Oncology 2015,23(03):0306-0310【修回日期】2014-07-21叶酸对MCF-7和MCF-7/ADR细胞的DNA合成均有抑制作用,该抑制作用在MCF-7/ADR细胞中更显著,可能通过阻断细胞从G0/G1期进入S期实现。在MCF-7/ADR细胞MTHFR A1298C基因多态性消失,可能与MCF-7细胞耐药相关。化疗是乳?