title: Pyrogallol inhibits the growth of human lung cancer Calu-6 cells via arresting the cell cycle arrest.
abstract: Pyrogallol (PG) is a polyphenol compound and has been known to be an O(2)(.-) generator. We evaluated the effects of PG on the growth of human pulmonary adenocarcinoma Calu-6 cells in relation to the cell cycle. DNA flow cytometric analysis indicated that PG induced a G2 phase arrest of the cell cycle in Calu-6 cells at 72 h. PG down-regulated the expression of CDKI (p27), CDK2, CDK4 and CDK6 as well as cyclin D1, and increased cyclin A and cyclin B1 proteins. In addition, O(2)(.-) levels were significantly increased in PG-treated cells. Treatment with catalase rescued Calu-6 cells from PG-induced apoptosis, and also prevented the growth inhibition as well as a G2 phase arrest by PG, which were accompanied with the down-regulation of O(2)(.-) levels. In conclusion, PG inhibited the growth of Calu-6 cells by inducing the cell cycle arrest, accompanied with an increase in O(2)(.-) levels.
authors.affiliation: Department of Physiology, Medical School, Institute for Medical Sciences, Centers for Healthcare Technology Development, Chonbuk National University, San 2-20 Geumam-dong, Deokjin-gu, JeonJu, Republic of Korea.
authors.forename: Yong Hwan
authors.initials: YH
authors.lastname: Han
authors.forename: Sung Zoo
authors.initials: SZ
authors.lastname: Kim
authors.forename: Suhn Hee
authors.initials: SH
authors.lastname: Kim
authors.forename: Woo Hyun
authors.initials: WH
authors.lastname: Park
mesh_terms: D000230:Adenocarcinoma / Q000378:metabolism; D000975:Antioxidants / Q000494:pharmacology*; D017209:Apoptosis / Q000187:drug effects; D002453:Cell Cycle / Q000187:drug effects*; D045744:Cell Line, Tumor; D018844:Cyclin-Dependent Kinases / Q000187:drug effects / Q000378:metabolism; D016213:Cyclins / Q000187:drug effects / Q000378:metabolism; D015536:Down-Regulation / Q000187:drug effects; D005434:Flow Cytometry; D016195:G2 Phase / Q000187:drug effects; D006801:Humans; D008175:Lung Neoplasms / Q000378:metabolism*; D011748:Pyrogallol / Q000494:pharmacology*; D013481:Superoxides / Q000378:metabolism
chemical_list: D000975:Antioxidants; D016213:Cyclins; D011748:Pyrogallol; D013481:Superoxides; D018844:Cyclin-Dependent Kinases