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αPS1βPS integrin receptors regulate the differential distribution of Sog fragments in polarized epithelia
Author(s) -
Negreiros Érika,
Fontenele Marcio,
Câmara Amanda R.,
Araujo Helena
Publication year - 2010
Publication title -
genesis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.093
H-Index - 110
eISSN - 1526-968X
pISSN - 1526-954X
DOI - 10.1002/dvg.20579
Subject(s) - microbiology and biotechnology , integrin , decapentaplegic , biology , gastrulation , receptor , basigin , imaginal disc , embryogenesis , embryo , drosophila melanogaster , matrix metalloproteinase , genetics , gene
Bone morphogenetic proteins (BMPs) have important functions during epithelial development. In Drosophila , extracellular Short gastrulation (Sog) limits the action of the BMP family member Decapentaplegic (Dpp). We have shown that Integrin receptors regulate Sog activity and distribution during pupal wing development to direct placement of wing veins. Here, we show that Integrins perform a similar function in the follicular epithelium, impacting Dpp function during oogenesis and embryonic development. As reported for the wing, this effect is specific to mew , which codes for αPS1 integrin. Sog is subject to cleavage by metalloproteases, generating fragments with different properties. We also show that Integrins regulate the distribution of C‐ and N‐terminal Sog fragments in both epithelia, suggesting they may regulate the quality of BMP outputs. Our data indicate that αPS1βPS integrin receptors regulate the amount and type of Sog fragments available for diffusion in the extracellular space during oogenesis and pupal wing development. genesis 48:31–43, 2010. © 2009 Wiley‐Liss, Inc.