Tetrahydrobiopterin from Cyanide-Degrading Bacterium Bacillus Pumilus Strain SVD06 Induces Apoptosis in Human Lung Adenocarcinoma Cell (A549).
Biotechnology and applied biochemistry online/Biotechnology and applied biochemistry(2023)
摘要
Tetrahydrobiopterin (BH4) is an essential biological cofactor and a derivative of pterin which is considered potent anticancer agents. In continuation of our previous study on the identification of BH4 from cyanide-degrading Bacillus pumilus, the present study focuses on evaluating the anticancer properties of BH4 on A549, a human lung adenocarcinoma. Anticancer activity analysis shows that BH4 inhibited A549 cell growth after 24 h of incubation with 0.02 mg/mL. In acridine orange/ethidium bromide staining, BH4-treated A549 cells showed apoptotic morphology. BH4 treatment caused cell cycle arrest at G0/G1 phase compared to control cells. BH4 augmented p53 expression in alveolar cancer cells by downregulating MDM2 levels. There was downregulation of casp-3 and upregulation of iNOS gene in BH4-treated A549 cells. Further, docking studies indicated that BH4 had significant interactions with the above proteins affirming the apoptosis mechanism. Thus, BH4 could be considered a potential anticancer drug.
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关键词
H-1 NMR,cyanide,human lung adenocarcinoma cells,in silico analysis,pterin,tetrahydrobiopterin
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