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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 PLoS+Genet
2016 ; 12
(11
): e1006424
Nephropedia Template TP
gab.com Text
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Scribbled Optimizes BMP Signaling through Its Receptor Internalization to the
Rab5 Endosome and Promote Robust Epithelial Morphogenesis
#MMPMID27814354
Gui J
; Huang Y
; Shimmi O
PLoS Genet
2016[Nov]; 12
(11
): e1006424
PMID27814354
show ga
Epithelial cells are characterized by apical-basal polarity. Intrinsic factors
underlying apical-basal polarity are crucial for tissue homeostasis and have
often been identified to be tumor suppressors. Patterning and differentiation of
epithelia are key processes of epithelial morphogenesis and are frequently
regulated by highly conserved extrinsic factors. However, due to the complexity
of morphogenesis, the mechanisms of precise interpretation of signal transduction
as well as spatiotemporal control of extrinsic cues during dynamic morphogenesis
remain poorly understood. Wing posterior crossvein (PCV) formation in Drosophila
serves as a unique model to address how epithelial morphogenesis is regulated by
secreted growth factors. Decapentaplegic (Dpp), a conserved bone morphogenetic
protein (BMP)-type ligand, is directionally trafficked from longitudinal veins
(LVs) into the PCV region for patterning and differentiation. Our data reveal
that the basolateral determinant Scribbled (Scrib) is required for PCV formation
through optimizing BMP signaling. Scrib regulates BMP-type I receptor Thickveins
(Tkv) localization at the basolateral region of PCV cells and subsequently
facilitates Tkv internalization to Rab5 endosomes, where Tkv is active. BMP
signaling also up-regulates scrib transcription in the pupal wing to form a
positive feedback loop. Our data reveal a unique mechanism in which intrinsic
polarity genes and extrinsic cues are coupled to promote robust morphogenesis.
|Animals
[MESH]
|Bone Morphogenetic Protein Receptors/genetics
[MESH]