Oncogene. 2004 Mar 15;23(11):2016-27.

The spindle checkpoint, aneuploidy, and cancer.

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Department of Pharmacology, UT Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, TX 75390-9041, USA.

Abstract

Cancer cells contain abnormal number of chromosomes (aneuploidy), which is a prevalent form of genetic instability in human cancers. Defects in a cell cycle surveillance mechanism called the spindle checkpoint contribute to chromosome instability and aneuploidy. In response to straying chromosomes in mitosis, the spindle checkpoint inhibits the ubiquitin ligase activity of the anaphase-promoting complex or cyclosome (APC/C), thus preventing precocious chromosome segregation and ensuring the accurate partition of the genetic material. We review recent progress toward the understanding of the molecular mechanism of the spindle checkpoint and its role in guarding genome integrity at the chromosome level.

PMID:: 15021889; [PubMed - indexed for MEDLINE]

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Cell Cycle Proteins

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GM61542/GM/NIGMS NIH HHS/United States

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The spindle checkpoint, aneuploidy, and cancer.

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