Effect of 3,4-dihydro-6-[4-(3,4-dimethoxybenzoyl)-1-piperazinyl]-2(1H)- quinolinone (vesnarinone) on the growth of gastric cancer cell lines.

Abstract:

:Vesnarinone (OPC-8212; 3,4-dihydro-6-[4-(3,4-dimethoxybenzoyl)-1-piperazinyl]-2(1H)-quinolinone ) is a synthetic oral cardiotonic agent that has been used for the treatment of patients with congestive heart failure. Six days of treatment with 30 microg/ml of vesnarinone induced 20-80% growth inhibitions in five out of six gastric carcinoma cell lines examined. Cell cycle analysis revealed that the vesnarinone-sensitive TMK-1 gastric cancer cell line exhibited a significant G0-G1 arrest without evidence of apoptotic cell death induction after 48 h of treatment. Interestingly, this phenomenon was preceded by a marked reduction in the expression of cyclin A, D1 and E as well as cyclin-dependent kinase 2 (CDK2). On the other hand, no significant change was observed in the expression of p21(Waf1/Cip1), p27Kip1 nor various growth factors and their receptor genes. Overall these results indicate that vesnarinone inhibits the growth of gastric cancer cells by down-regulating G1 cyclins and CDK2 to induce G0-G1 arrest through a pathway different from that of cyclin inactivation by p21(Waf1/Cip1) or p27Kip1.

journal_name

Cancer Lett

journal_title

Cancer letters

authors

Yokozaki H,Ito R,Ono S,Hayashi K,Tahara E

doi

10.1016/s0304-3835(99)00061-0

keywords:

subject

Has Abstract

pub_date

1999-06-01 00:00:00

pages

121-8

issue

1-2

eissn

0304-3835

issn

1872-7980

pii

S0304-3835(99)00061-0

journal_volume

140

pub_type

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