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Expression Analysis of Proline Rich 15 (Prr15) in Mouse and Human Gastrointestinal Tumors
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Organism Biology, Evolution and Developmental Biology.
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2011 (English)In: Molecular Carcinogenesis, ISSN 0899-1987, E-ISSN 1098-2744, Vol. 50, no 1, 8-15 p.Article in journal (Refereed) Published
Abstract [en]

Proline rich 15 (Prr15), which encodes a protein of unknown function, is expressed almost exclusively in postmitotic cells both during fetal development and in adult tissues, such as the intestinal epithelium and the testis. To determine if this specific expression is lost in intestinal neoplasias, we examined Prr15 expression by in situ hybridization (ISH) on mouse intestinal tumors caused by different gene mutations, and on human colorectal cancer (CRC) samples. Prr15/PRR15 expression was consistently observed in mouse gastrointestinal (GI) tumors caused by mutations in the Apc gene, as well as in several advanced stage human CRCs. In contrast, no Prr15 expression was detected in intestinal tumors derived from mice carrying mutations in the Smad3, Smad4, or Cdkn1b genes. These findings, combined with the fact that a majority of sporadic human CRCs carry APC mutations, strongly suggest that the expression of Prr15/PRR15 in mouse and human GI tumors is linked, directly or indirectly, to the absence of the APC protein or, more generally, to the disruption of the Wnt signaling pathway.

Place, publisher, year, edition, pages
2011. Vol. 50, no 1, 8-15 p.
Keyword [en]
proline rich 15, Prr15, Apc, intestinal neoplasia, colorectal cancer
National Category
Medical and Health Sciences Biological Sciences
Identifiers
URN: urn:nbn:se:uu:diva-143661DOI: 10.1002/mc.20692ISI: 000285428100002PubMedID: 21061267OAI: oai:DiVA.org:uu-143661DiVA: diva2:391004
Available from: 2011-01-24 Created: 2011-01-24 Last updated: 2017-12-11Bibliographically approved

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