Induction of apoptosis in a non-small cell human lung cancer cell line by isothiocyanates is associated with P53 and P21.
This study was aimed at examining the effects of glucosinolate derivatives including phenylethyl isothiocyanate (PEITC), benzyl isothiocyanate (BITC), and indole-3-carbinol (I3C), on the induction of apoptosis in human non-small cell lung carcinoma A549 cells. The results indicated that all tested compounds inhibited the growth of A549 cells in a concentration-dependent manner. Flow cytometric analyses and annexin V staining showed that induction of apoptosis occurred at low concentrations of PEITC and BITC (< or = 10 microM), and that necrosis occurred at higher concentrations of PEITC and BITC (25 microM); however, apoptosis was not the major pathway for the antiproliferative effects of I3C. Furthermore, Western blot analyses demonstrated that increased expression of P53 and P21 proteins, but not Bax protein, were associated with PEITC- and BITC-induced apoptosis.
Kuang
Yu-Fang
YF
School of Nutrition and Health Sciences, Taipei Medical University, Taiwan, ROC.
Chen
Yue-Hwa
YH
D017304:Annexin A5 / Q000378:metabolism; D000970:Antineoplastic Agents; D017209:Apoptosis / Q000187:drug effects*; D015153:Blotting, Western; D002289:Carcinoma, Non-Small-Cell Lung / Q000188:drug therapy* / Q000473:pathology; D002455:Cell Division / Q000187:drug effects; D045744:Cell Line, Tumor; D004591:Electrophoresis, Polyacrylamide Gel; D005434:Flow Cytometry; D016158:Genes, p53 / Q000187:drug effects / Q000235:genetics*; D006801:Humans; D007211:Indoles / Q000627:therapeutic use; D017879:Isothiocyanates / Q000627:therapeutic use*; D008175:Lung Neoplasms / Q000188:drug therapy* / Q000473:pathology; D008856:Microscopy, Fluorescence; D015689:Oncogene Protein p21(ras) / Q000235:genetics*; D010718:Phosphatidylserines / Q000378:metabolism; D011518:Proto-Oncogene Proteins / Q000096:biosynthesis / Q000235:genetics; D019253:Proto-Oncogene Proteins c-bcl-2; D051028:bcl-2-Associated X Protein
D017304:Annexin A5; D000970:Antineoplastic Agents; C494826:BAX protein, human; D007211:Indoles; D017879:Isothiocyanates; D010718:Phosphatidylserines; D011518:Proto-Oncogene Proteins; D019253:Proto-Oncogene Proteins c-bcl-2; D051028:bcl-2-Associated X Protein; C031403:benzyl isothiocyanate; C016517:indole-3-carbinol; D015689:Oncogene Protein p21(ras)