The INK4a/ARF tumor suppressor: one gene - two products - two pathways

被引:235
作者
Chin, L
Pomerantz, J
DePinho, RA
机构
[1] Harvard Univ, Sch Med, Dana Farber Canc Inst, Dept Adult Oncol, Boston, MA 02115 USA
[2] Harvard Univ, Sch Med, Dept Dermatol, Boston, MA 02115 USA
[3] Albert Einstein Coll Med, Dept Microbiol & Immunol, New York, NY 10461 USA
[4] Harvard Univ, Sch Med, Dept Med, Boston, MA 02115 USA
关键词
D O I
10.1016/S0968-0004(98)01236-5
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Functional inactivation of the retinoblastoma (RB) and p53 pathways appears to be a rite of passage for all cancerous cells and results in disruption of cell-cycle regulation and deactivation of the apoptotic response that normally ensues. The INK4a/ARF locus sits at the nexus of these two growth-control pathways, by virtue of its ability to generate two distinct products: the p16(INK4a) protein, a cyclin-dependent kinase inhibitor that functions upstream of RE; and the p19(ARF) protein, which blocks MDM2 inhibition of p53 activity. This 'one gene - two products - two pathways' arrangement provides a basis for the prominence of INK4a/ARF in tumorigenesis.
引用
收藏
页码:291 / 296
页数:6
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