Abstract:
:In epithelial cells progression through the G1 phase of the cell cycle and preparing the cell for the S phase is regulated by cyclin D1-cdk4. Cells that express the retinoblastoma protein (pRb) are dependent on cyclin D1-cdk4 activity for their proliferation while cells that do not express pRb are not. Overexpression of cyclin D1 and/or cdk4, and loss of expression of p16 (the natural inhibitor of cyclin D1-cdk4 activity), have been implicated in several cancers. These data suggest that the aberrant activity of cyclin D1-cdk4 correlates with the tumor phenotype. Hence, blocking cyclin D1-cdk4 activity may prove to be an effective anticancer therapy for pRb(+) tumors. In this paper, we report the identification of four novel compounds that selectively inhibit cyclin D1-cdk4 activity to various degrees. We further demonstrate that two of these compounds also selectively inhibit the target, pRb(+) tumor cells. The implications of these discoveries and their utility as anticancer agents are discussed.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Kent LL,Hull-Campbell NE,Lau T,Wu JC,Thompson SA,Nori Mdoi
10.1006/bbrc.1999.0891subject
Has Abstractpub_date
1999-07-14 00:00:00pages
768-74issue
3eissn
0006-291Xissn
1090-2104pii
S0006-291X(99)90891-4journal_volume
260pub_type
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