Document Detail


Trefoil factor family peptide 2 acts pro-proliferative and pro-apoptotic in the murine retina.
MedLine Citation:
PMID:  21512811     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Although expression of trefoil factor family (TFF) peptides has been reported in the brain, nothing is known about TFF expression in the retina. The aim of this study was to test whether TFF peptides are expressed in the murine retina and have any function here. In contrast to most tissues studied, where TFF1 and TFF3 are the predominant peptides, TFF2 is the only peptide expressed in the murine retina. Immunohistochemical studies on murine retinal sections indicate that cells of the ganglion cell layer are the retinal source for murine TFF2 (Tff2). In organotypic murine retina cell cultures recombinant TFF2 exerted a strong pro-apoptotic and pro-proliferative rather than an anti-apoptotic and anti-proliferating effect described in most human cancer cell lines investigated so far. In blockage experiments we were able to demonstrate that the pro-apoptotic effect of TFF2 is caspase-dependent. Western blot analysis of TFF2 treated retinal wholemount homogenates revealed significant reductions in the phosphorylation level of ERK and STAT3 proteins compared to basal conditions, suggesting that in the developing murine retina survival mechanism are down-regulated upon TFF2 administration. Our results suggest that during retinal cell death periods, requiring a tightly regulated balance between cell survival and cell death, TFF2 acts pro-proliferative and pro-apoptotic at least in developing mouse retinae cultured in vivo.
Authors:
Adnana N Paunel-Görgülü; Andreas G Franke; Friedrich P Paulsen; Nicole Dünker
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-4-22
Journal Detail:
Title:  Histochemistry and cell biology     Volume:  -     ISSN:  1432-119X     ISO Abbreviation:  -     Publication Date:  2011 Apr 
Date Detail:
Created Date:  2011-4-22     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9506663     Medline TA:  Histochem Cell Biol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Department of Neuroanatomy, Institute of Anatomy, Medical Faculty, University of Duisburg-Essen, Hufelandstr. 55, 45122, Essen, Germany.
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