RESUMO
Aim To investigate the effects of Zhiling capsule (ZLJN) on the proliferation inhibition and apoptosis induction in K562 cell line.Methods According to the different components of ZLJN,K562 cells were treated respectively with tradtional Chinese medicine,Western medicine and ZLJN compound groups.The cell viability and colony formation were observed by MTT assay and colony formation assay respectively.Apoptotic cells were detected by Annexin V-FITC/PI staining and DNA fragmentation assay.Caspase-3 activity was detected by flow cytometry,and pro-caspase-3 was detected by Western blot.Results Treated with drug,K562 cell growth and cell colony formation were significantly inhibited.Apoptosis occurring in the early stage was identified by Annexin V-FITC/PI staining.Typical DNA ladder was seen from gel electrophoresis and apparent apoptotic peaks were observed by flow cytometer.The level of caspase-3 activity increased after the treatment,while the level of pro-caspase-3 decreased.Conclusion ZLJN can efficiently inhibit proliferation and induce apoptosis in K562 cells,which may be related with the up-regulation of caspase-3 activity.
RESUMO
Aim To explore the mechanisms of the apoptosis induction and the effects of adhesion suppression of Zhiling capsule (ZLJN) in small cell lung cancer cell line NCI-H446.Methods According to the different components of ZLJN,NCI-H446 cells were treated with traditional Chinese medicine,western medicine and ZLJN composite groups.Apoptotic cells were tested by light microscopy,Hochest33258 staining method.The mRNA and protein expressions of bcl-2,bax and hTERT were analyzed by RT-PCR and Western blot respectively.The expressions of CD44 were detected by flow cytometry.Results After NCI-H446 cells were treated with different drug groups,The morphological changes of apoptotic cells were found by light microscopy and Hochest33258 staining method.The mRNA and protein expressions of bcl-2 were down-regulated while the expressions of bax were up-regulated compared to the control groups(P