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Biotechnol Appl Biochem ; 70(6): 2052-2068, 2023 Dec.
Article in English | MEDLINE | ID: mdl-37731306

ABSTRACT

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.


Subject(s)
Adenocarcinoma of Lung , Antineoplastic Agents , Bacillus pumilus , Lung Neoplasms , Humans , Cyanides/pharmacology , Cyanides/therapeutic use , Cell Line, Tumor , Adenocarcinoma of Lung/drug therapy , Apoptosis , Antineoplastic Agents/pharmacology , Cell Proliferation , Lung Neoplasms/metabolism
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