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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Fry, William H. D. Astudillo, Michael Carraway, Kermit L. Saldana, Matthew Sweeney, Colleen Mercado, Francisco Rafidi, Hanine |
| Description | Author Affiliation: Rafidi H ( Department of Biochemistry and Molecular Medicine, University of California at Davis Comprehensive Cancer Center, Sacramento, California 95817, USA.) |
| Abstract | Lrig1 is the founding member of the Lrig family of transmembrane leucine-rich repeat proteins, which also includes Lrig2 and Lrig3. Lrig1 is a negative regulator of oncogenic receptor tyrosine kinases, including ErbB and Met receptors, and promotes receptor degradation. Lrig1 has recently emerged as both a tumor suppressor and a key regulator of epidermal and epithelial stem cell quiescence. Despite this, little is known of the mechanisms by which Lrig1 is regulated. Lrig3 was recently reported to increase ErbB receptor expression suggesting that it may function in a manner opposite to Lrig1. In this study, we explore the interaction between Lrig1 and Lrig3 and demonstrate that Lrig1 and Lrig3 functionally oppose one another. Lrig3 opposes Lrig1 negative regulatory activity and stabilizes ErbB receptors. Conversely, Lrig1 destabilizes Lrig3, limiting Lrig3's positive effects on receptors and identifying Lrig3 as a new target of Lrig1. These studies provide new insight into the regulation of Lrig1 and uncover a complex cross-talk between Lrig1 and Lrig3. |
| ISSN | 00219258 |
| e-ISSN | 1083351X |
| Journal | Journal of Biological Chemistry |
| Issue Number | 30 |
| Volume Number | 288 |
| Language | English |
| Publisher | American Society for Biochemistry and Molecular Biology (United States) |
| Publisher Date | 2013-07-26 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Membrane Glycoproteins Metabolism Membrane Proteins Receptor, Epidermal Growth Factor Receptor, ErbB-2 Receptor, ErbB-3 Animals Blotting, Western CHO Cells Cell Line, Tumor Cricetinae Cricetulus Endocytosis HEK293 Cells MCF-7 Cells Genetics Mutation Protein Binding Protein Stability RNA Interference Receptor, ErbB-4 Research Support, N.I.H., Extramural Research Support, U.S. Gov't, Non-P.H.S. Biochemistry Molecular Biology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cell Biology Biochemistry Molecular Biology |
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