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Updated: Jul 3, 2026

Rapid Analysis of Chromosome Aberrations in Mouse B Lymphocytes by PNA-FISH
Published on: August 19, 2014
Prostate-specific membrane antigen associates with anaphase-promoting complex and induces chromosomal instability
Sigrid A Rajasekaran1, Jason J Christiansen, Ingrid Schmid
1Nemours Center for Childhood Cancer Research, Alfred I. DuPont Hospital for Children, Rockland Center I, 1701 Rockland Road, Wilmington, DE 19803, USA.
Abstract:
Prostate-specific membrane antigen (PSMA) is a transmembrane protein highly expressed in advanced and metastatic prostate cancers. The pathologic consequence of elevated PSMA expression in not known. Here, we report that PSMA is localized to a membrane compartment in the vicinity of mitotic spindle poles and associates with the anaphase-promoting complex (APC). PSMA-expressing cells prematurely degrade cyclin B and exit mitosis due to increased APC activity and incomplete inactivation of APC by the spindle assembly checkpoint. Further, expression of PSMA in a karyotypically stable cell line induces aneuploidy. Thus, these findings provide the first evidence that PSMA has a causal role in the induction of aneuploidy and might play an etiologic role in the progression of prostate cancer.
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