Prominin-1 (CD133) is not restricted to stem cells located in the basal compartment of murine and human prostate
Article first published online: 17 AUG 2010
Copyright © 2010 Wiley-Liss, Inc.
Volume 71, Issue 3, pages 254–267, 15 February 2011
How to Cite
Missol-Kolka, E., Karbanová, J., Janich, P., Haase, M., Fargeas, C. A., Huttner, W. B. and Corbeil, D. (2011), Prominin-1 (CD133) is not restricted to stem cells located in the basal compartment of murine and human prostate. Prostate, 71: 254–267. doi: 10.1002/pros.21239
- Issue published online: 20 JAN 2011
- Article first published online: 17 AUG 2010
- Manuscript Accepted: 23 JUN 2010
- Manuscript Received: 28 MAR 2010
- Deutsche Forschungsgemeinschaft. Grant Numbers: SFB/TR83 #6, SFB 655 A2, SFB 655 B3, CO 298/5-1
- Sächsisches Ministerium für Wissenschaft und Kunst-Europäischer Fond für Regionale Entwicklung. Grant Number: 4212/05-16
- proliferative inflammatory atrophy;
- prostate cancer;
- stem cells
Rodent and human prominin-1 are expressed in numerous adult epithelia and somatic stem cells. A report has shown that human PROMININ-1 carrying the AC133 epitope can be used to identify rare prostate basal stem cells (Richardson et al., J Cell Sci 2004; 117:3539–3545). Here we re-investigated its general expression in male reproductive tract including mouse and human prostate and in prostate cancer samples using various anti-prominin-1 antibodies.
The expression was monitored by immunohistochemistry and blotting. Murine tissues were stained with 13A4 monoclonal antibody (mAb) whereas human samples were examined either with the AC133 mAb recognizing the AC133 glycosylation-dependent epitope or 80B258 mAb directed against the PROMININ-1 polypeptide.
Mouse prominin-1 was detected at the apical domain of epithelial cells of ductus deferens, seminal vesicles, ampullary glands, and all prostatic lobes. In human prostate, immunoreactivity for 80B258, but not AC133 was revealed at the apical side of some epithelial (luminal) cells, in addition to the minute population of AC133/80B258-positive cells found in basal compartment. Examination of prostate adenocarcinoma revealed the absence of 80B258 immunoreactivity in the tumor regions. However, it was found to be up-regulated in luminal cells in the vicinity of the cancer areas.
Mouse prominin-1 is widely expressed in prostate whereas in human only some luminal cells express it, demonstrating nevertheless that its expression is not solely associated with basal stem cells. In pathological samples, our pilot evaluation shows that PROMININ-1 is down-regulated in the cancer tissues and up-regulated in inflammatory regions. Prostate 71:254–267, 2011. © 2010 Wiley-Liss, Inc.