ncRNA basic information
ncRNA ID:
MI0000077
ncRNA Database:
miRBase
ncRNA Name:
miR-21
ncRNA Type:
miRNA
ncRNA Expression:
down-regulated
ncRNA Method:
RT-PCR
ncRNA Target Gene:
NA
ncRNA Pathway:
NA
Evidence (ncRNA-drug):
validated
drug basic information
Drug ID:
DB01229 (APRD00259, DB05261, DB05927, DB05526, DB05281)
Drug Name:
Paclitaxel
Drug Method:
Paclitaxel-resistant human breast cancer cell lines MCF-7/PR and SKBR-3/PR were established by stepwise selection in increasing concentration of paclitaxel. Cellular morphology, mRNA and protein level of MDR1, BCRP and MRP1 in MCF-7/PR and SKBR-3/PR cells were determined. The expression of Bax, Bcl-2 and miR-21 in parental and paclitaxel-resistant cells was detected by RT-PCR and Western blotting. The synthetic miR-21 inhibitor or miR-21 mimic were transfected into MCF-7/PR, SKBR-3/PR and MCF-7, SKBR-3 cells with Lipofectamine 2000. The miR-21 levels were determined by RT-PCR, and P-gp, Bcl-2 and Bax protein levels were examined by Western blotting. MTT assay was used to measure the cell viability, and flow cytometry was performed to analyze the cell cycle and apoptosis.
Drug Response:
sensitive
Cancer basic information
Cancer:
breast cancer
Tissue/Cell:
cell line (MCF-7/PR, SKBR-3/PR, MCF-7, SKBR-3)
Other information
Title:
Effects of miRNA-21 on paclitaxel-resistance in human breast cancer cells
Journal:
Zhejiang Da Xue Xue Bao Yi Xue Ban
Published:
2015
PubMed ID:
26555418