Abstract:
:Panaxydol, a polyacetylenic compound derived from Panax ginseng has been reported to suppress the growth of cancer cells. However, the molecular mechanisms underlying cell cycle arrest by this compound in non-small cell lung cancer (NSCLC) are unknown. Our study found that panaxydol treatment induced cell cycle arrest at G1 phase in NSCLC cells. The cell cycle arrest was accompanied by down-regulation of the protein expression of cyclin-dependent kinase (CDK) 2, CDK4, CDK6, cyclin D1 and cyclin E, and decrease in the phosphorylation of retinoblastoma (Rb) protein. Furthermore, up-regulation of cyclin-dependent kinase inhibitor (CDKI) p21CIP1/WAF1 and p27KIP1 was observed in panaxydol-treated NSCLC cells. In addition, panaxydol also induced accumulation of intracellular Ca2+ ([Ca2+]i). (Acetyloxy)methyl 2-({2-[(acetyloxy)methoxy]-2-oxoethyl}[2-(2-{2-[bis({2-[(acetyloxy)methoxy]-2-oxoethyl})amino]phenoxy}ethoxy)phenyl]amino)acetate (BAPTA-AM), the Ca2+ chelator, attenuated not only panaxydol-induced accumulation of [Ca2+]i, but also G1 cell cycle arrest and decrease of CDK6 and cyclin D1 protein expression level. These results demonstrated that the anti-proliferative effects of panaxydol were caused by cell cycle arrest, which is closely linked to the up-regulation of [Ca2+]i and represents a promising approach for the treatment of lung cancer.
journal_name
Biol Pharm Bulljournal_title
Biological & pharmaceutical bulletinauthors
Lee JH,Leem DG,Chung KS,Kim KT,Choi SY,Lee KTdoi
10.1248/bpb.b18-00447subject
Has Abstractpub_date
2018-01-01 00:00:00pages
1701-1707issue
11eissn
0918-6158issn
1347-5215journal_volume
41pub_type
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