In vitro synergistic anticancer activity of the combination of T-type calcium channel blocker and chemotherapeutic agent in A549 cells. Issue 3 (1st February 2016)

• Record Type: Journal Article
• Authors: Byun, Joon Seok; Sohn, Joo Mi; Leem, Dong Gyu; Park, Byeongyeon; Nam, Ji Hye; Shin, Dong Hyun; Shin, Ji Sun; Kim, Hyoung Ja; Lee, Kyung-Tae; Lee, Jae Yeol
• Is Part Of: Bioorganic & medicinal chemistry letters. Volume 26:Issue 3(2016)
• Page Start: 1073
• Page End: 1079
• Publication Date: 2016-02-01
• Subjects: Cell cycle arrest -- Synergistic effect -- T-type calcium channel -- Human lung cancer -- Apoptosis; Bioorganic chemistry -- Periodicals; Pharmaceutical chemistry -- Periodicals; 572
• DOI: 10.1016/j.bmcl.2015.12.010
• Languages: English
• ISSNs: 0960-894X

Abstract

Graphical abstract: Abstract: As a result of our continuous research, new 3, 4-dihydroquinazoline derivative containing ureido group, KCP10043F was synthesized and evaluated for T-type Ca 2+ channel (Cav 3.1) blockade, cytotoxicity, and cell cycle arrest against human non-small cell lung (A549) cells. KCP10043F showed both weaker T-type Ca 2+ channel blocking activity and less cytotoxicity against A549 cells than parent compound KYS05090S [4-(benzylcarbamoylmethyl)-3-(4-biphenylyl)-2-( N, N ′, N ′-trimethyl-1, 5-pentanediamino)-3, 4-dihydroquinazoline 2 hydrochloride], but it exhibited more potent G1 -phase arrest than KYS05090S in A549 cells. This was found to be accompanied by the downregulations of cyclin-dependent kinase (CDK) 2, CDK4, CDK6, cyclin D2, cyclin D3, and cyclin E at the protein levels. However, p27 KIP1 as a CDK inhibitor was gradually upregulated at the protein levels and increased recruitment to CDK2, CDK4 and CDK6 after KCP10043F treatment. Based on the strong G1 -phase cell cycle arrest of KCP10043F in A549 cells, the combination of KCP10043F with etoposide (or cisplatin) resulted in a synergistic cell death (combination index = 0.2–0.8) via the induction of apoptosis compared with either agent alone. Taken together with these overall results and the favorable in vitro ADME (absorption, distribution, metabolism, and excretion) profiles of KCP10043F, therefore, it could be used as a potential agent for the combination therapy on human lung cancer.