© 2003 by Oxford University Press
Journal of the National Cancer Institute, Vol. 95, No. 12, 839-841,
June 18, 2003
© 2003 Oxford University Press
EDITORIAL |
A New Member of the Growing Family of Metastasis Suppressors Identified in Prostate Cancer
Affiliations of authors: D. R. Welch, Department of Pathology and Comprehensive Cancer Center, The University of Alabama at Birmingham; K. W. Hunter, Laboratory of Population Genetics, Center for Cancer Research, National Cancer Institute, Bethesda, MD.
Correspondence to: Danny R. Welch, Ph.D., Department of Pathology, The University of Alabama at Birmingham, 1670 University Blvd., Volker Hall G-038, Birmingham, AL 352940019 (e-mail: dwelch@path.uab.edu).
| The first 150 words of the full text of this article appear below. |
The molecular understanding of cancer metastasis has taken yet another step forward with findings published in this issue of the Journal by Fu et al. (1). The authors report that restoration of Raf kinase inhibitor protein (RKIP) expression is associated with the inhibition of prostate carcinoma metastasis but not with the suppression of tumorigenicity. In addition, the authors report an inverse association between RKIP expression and both the stage of disease and Gleason score. These properties epitomize metastasis suppressor genes, a recently described category of molecules defined by their ability to suppress metastasis without blocking tumorigenicity (2). RKIP is the thirteenth metastasis suppressor described in the literature for which functional data exist (the others are Nm23, KISS1, KAI1, BRMS1, TIMPs, E-cadherin, MKK4, TXNIP, CRSP3, DRG-1, SSeCKs, and RhoGDI2). Several recent reviews summarize what is known regarding the mechanisms of action of metastasis suppressors and the clinical
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