Kindlin-2 Expression in Arsenite- and Cadmium-transformed Bladder Cancer Cell Lines and in Archival Specimens of Human Bladder Cancer
By: Talaat S, Somji S, Toni C, Garrett SH, Zhou XD, Sens MA, Sens DA.

Department of Pathology, University of North Dakota, School of Medicine and Health Sciences, Grand Forks, ND.
Urology. 2011 Jun; 77(6):1507.e1-7.

Abstract

Objective

To confirm a microarray study that suggested that Kindlin-2 might play a role in the development and progression of bladder cancer. There has been no previous examination of Kindlin-2 expression in human bladder cancer.

Methods

A combination of real-time polymerase chain reaction, Western analysis, and immunohistochemistry was used to characterize Kindlin-2 expression in arsenite (As(+3))- and cadmium (Cd(+2))-transformed human cell lines, their tumor transplants in immunocompromised mice, and in archival specimens of human bladder and bladder cancer.

Results

The results show that the Kindlin-2 expression patterns in the cell lines were not duplicated in the tumor tissues. However, it was shown that Kindlin-2 was expressed in the stromal element of all the transplanted tumors and archival specimens of human bladder cancer. It was also shown that a small number of high-grade invasive urothelial cancers have focal expression of Kindlin-2 in the tumor cells.

Conclusion

Kindlin-2 is expressed in the stromal component of most, if not all, human bladder cancers. Kindlin-2 is not expressed in normal urothelium. Kindlin-2 is expressed in a small subset of high-grade invasive bladder cancers and may have potential as a prognostic marker for tumor progression.

Copyright © 2011 Elsevier Inc. All rights reserved.

PMID: 21624607 Source: National Library of Medicine.







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