Role of the F-box protein Skp2 in lymphomagenesis Journal Article
| Authors: | Latres, E.; Chiarle, R.; Schulman, B. A.; Pavletich, N. P.; Pellicer, A.; Inghirami, G.; Pagano, M. |
| Article Title: | Role of the F-box protein Skp2 in lymphomagenesis |
| Abstract: | The F-box protein Skp2 (S-phase kinase-associated protein 2) positively regulates the G1-S transition by controlling the stability of several G1 regulators, such as the cell cycle inhibitor p27. We show here that Skp2 expression correlates directly with grade of malignancy and inversely with p27 levels in human lymphomas. To directly evaluate the potential of Skp2 to deregulate growth in vivo, we generated transgenic mice expressing Skp2 targeted to the T-lymphoid lineage as well as double transgenic mice coexpressing Skp2 and activated N-Ras. A strong cooperative effect between these two transgenes induced T cell lymphomas with shorter latency and higher penetrance, leading to significantly decreased survival when compared with control and single transgenic animals. Furthermore, lymphomas of Nras single transgenic animals often expressed higher levels of endogenous Skp2 than tumors of double transgenic mice. This study provides evidence of a role for an F-box protein in oncogenesis and establishes SKP2 as a protooncogene causally involved in the pathogenesis of lymphomas. |
| Keywords: | immunohistochemistry; human tissue; cancer grading; ubiquitin; animals; cell cycle proteins; mice; cell cycle; cell cycle s phase; microfilament proteins; carcinogenesis; transgenic mouse; animalia; mus musculus; mice, transgenic; t cell lymphoma; lymphoma; complementary dna; s-phase kinase-associated proteins; regulator protein; ligase; muscle proteins; cancer; humans; human; priority journal; article; ubiquitin-ligases |
| Journal Title: | Proceedings of the National Academy of Sciences of the United States of America |
| Volume: | 98 |
| Issue: | 5 |
| ISSN: | 0027-8424 |
| Publisher: | National Academy of Sciences |
| Date Published: | 2001-02-27 |
| Start Page: | 2515 |
| End Page: | 2520 |
| Language: | English |
| DOI: | 10.1073/pnas.041475098 |
| PUBMED: | 11226270 |
| PROVIDER: | scopus |
| PMCID: | PMC30169 |
| DOI/URL: | |
| Notes: | Export Date: 21 May 2015 -- Source: Scopus |
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