Document Detail


ELMO1 signaling in apoptotic germ cell clearance and spermatogenesis.
MedLine Citation:
PMID:  20958313     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Apoptosis and the subsequent removal of dying cells are crucial processes for tissue development and maintenance. Although we are beginning to understand the signaling pathways that control the phagocytic clearance of apoptotic cells, the physiological relevance of these pathways is lacking. During spermatogenesis, over half of the developing germ cells eventually die by apoptosis, yet the signaling pathways that regulate the phagocytic clearance of these dying cells or the impact of this clearance on development and maintenance of the germ cell population is not well understood. The ELMO1/Dock180 proteins form an evolutionarily conserved signaling module that functions as a bipartite guanine nucleotide exchange factor for the small GTPase Rac. The subsequent Rac-dependent cytoskeletal changes play an important role in the physical engulfment of apoptotic cells. Recent findings demonstrate an in vivo role for ELMO1-dependent clearance in the testes, with implications for spermatogenesis. Here we will discuss the role of apoptotic cell clearance during spermatogenesis, with a particular emphasis on ELMO1/Dock180 signaling.
Authors:
Michael R Elliott; Kodi S Ravichandran
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Annals of the New York Academy of Sciences     Volume:  1209     ISSN:  1749-6632     ISO Abbreviation:  Ann. N. Y. Acad. Sci.     Publication Date:  2010 Oct 
Date Detail:
Created Date:  2010-10-20     Completed Date:  2010-11-08     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7506858     Medline TA:  Ann N Y Acad Sci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  30-6     Citation Subset:  IM    
Copyright Information:
© 2010 New York Academy of Sciences.
Affiliation:
Department of Microbiology, Center for Cell Clearance, University of Virginia, Charlottesville, Virginia, USA.
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MeSH Terms
Descriptor/Qualifier:
Adaptor Proteins, Signal Transducing / metabolism*
Animals
Apoptosis*
Germ Cells / cytology*
Humans
Male
Signal Transduction*
Spermatogenesis*
Chemical
Reg. No./Substance:
0/Adaptor Proteins, Signal Transducing; 0/ELMO1 protein, human

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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