CHK1 inhibition overcomes gemcitabine resistance in non-small cell lung cancer cell A549.

ABSTRACT: The purpose of the study is mainly to investigate anti proliferation of non-small cell lung cancer A549 cells and its mechanism by inhibition of CHK1 expression combined with gemcitabine. The mRNA and protein levels of genes were analyzed by RT-qPCR and Western blot, respectively. Cell viability was detected by CCK-8 assay and clone formation assay. The detection of the cell cycle was used by Annexin V/7-amino-actinomycin D apoptosis detection kit. Analysis of DNA damage was done by immunofluorescence and alkaline comet assay. The results showed that inhibition of CHK1 and gemcitabine combination significantly reduced the proliferation ability of the two cell lines. We also revealed the degradation of full-length PARP and reduced Bcl-2/Bax ratio on increased apoptosis. Inhibition of CHK1 e

SUBMITTER: Ke ZY 

PROVIDER: S-EPMC11988257 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature