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The endosomal transcriptional regulator RNF11 integrates degradation and transport of EGFR
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2016 (English)In: Journal of Cell Biology, ISSN 0021-9525, E-ISSN 1540-8140, Vol. 215, no 4, 543-558 p.Article in journal (Refereed) Published
Abstract [en]

Stimulation of cells with epidermal growth factor (EGF) induces internalization and partial degradation of the EGF receptor (EGFR) by the endo-lysosomal pathway. For continuous cell functioning, EGFR plasma membrane levels are maintained by transporting newly synthesized EGFRs to the cell surface. The regulation of this process is largely unknown. In this study, we find that EGF stimulation specifically increases the transport efficiency of newly synthesized EGFRs from the endoplasmic reticulum to the plasma membrane. This coincides with an up-regulation of the inner coat protein complex II (COP II) components SEC23B, SEC24B, and SEC24D, which we show to be specifically required for EGFR transport. Up-regulation of these COP II components requires the transcriptional regulator RNF11, which localizes to early endosomes and appears additionally in the cell nucleus upon continuous EGF stimulation. Collectively, our work identifies a new regulatory mechanism that integrates the degradation and transport of EGFR in order to maintain its physiological levels at the plasma membrane.

Place, publisher, year, edition, pages
Rockefeller University Press, 2016. Vol. 215, no 4, 543-558 p.
National Category
Cell Biology
Identifiers
URN: urn:nbn:se:kth:diva-198881DOI: 10.1083/jcb.201601090ISI: 000388690900012PubMedID: 27872256Scopus ID: 2-s2.0-85003972486OAI: oai:DiVA.org:kth-198881DiVA: diva2:1061659
Funder
Science for Life Laboratory - a national resource center for high-throughput molecular bioscience
Note

QC 20170103

Available from: 2017-01-03 Created: 2016-12-22 Last updated: 2017-01-03Bibliographically approved

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