期刊
EXPERIMENTAL CELL RESEARCH
卷 315, 期 4, 页码 683-696出版社
ELSEVIER INC
DOI: 10.1016/j.yexcr.2008.07.029
关键词
EGF; Receptor; Endocytosis; Clathrin; Ubiquitination; Degradation; Endosome; Lysosome
资金
- NCI [CA08915]
- ACS [RSG-00-247-04-CSM]
This review article describes the pathways and mechanisms of endocytosis and post-endocytic sorting of the EGF receptor (EGFR/ErbB1) and other members of the ErbB family. Growth factor binding to EGFR accelerates its internalization through clathrin-coated pits which is followed by the efficient lysosomal targeting of internalized receptors and results in receptor clown-regulation. The role of EGFR interaction with the Grb2 adaptor protein and Cb1 unbiquitin ligase, and receptor ubiquitination in the clathrin-dependent internalization and sorting of EGFR in multivesicular endosomes is discussed. Activation and phosphorylation of ErbB2, ErbB3 and ErbB4 also results in their ubiquitination. However, these ErbBs are internalized and targeted to lysosomes less efficiently than EGFR. When overexpressed endocytosis-impaired ErbBs may inhibit the internalization and degradation of EGFR. (C) 2008 Elsevier Inc. All rights reserved.
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