Establishment of a BMP-4 Morphogen Gradient by Long-Range Inhibition
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چکیده
منابع مشابه
Direct and Long-Range Action of a DPP Morphogen Gradient
During development of the Drosophila wing, the decapentaplegic (dpp) gene is expressed in a stripe of cells along the anteroposterior compartment boundary and gives rise to a secreted protein that exerts a long-range organizing influence on both compartments. Using clones of cells that express DPP, or in which DPP receptor activity has been constitutively activated or abolished, we show that DP...
متن کاملDirect and Long-Range Action of a Wingless Morphogen Gradient
Wingless (Wg), a founding member of the Wingless/Int-1 (Wnt) family of secreted proteins, acts as a short-range inducer and as a long-range organizer during Drosophila development. Here, we determine the consequences of ectopically expressing (i) a wild-type form of Wg, (ii) a membrane-tethered form of Wg, and (iii) a constitutively active form of the cytosolic protein Armadillo (Arm), which no...
متن کاملFormation of the Long Range Dpp Morphogen Gradient
The TGF-β homolog Decapentaplegic (Dpp) acts as a secreted morphogen in the Drosophila wing disc, and spreads through the target tissue in order to form a long range concentration gradient. Despite extensive studies, the mechanism by which the Dpp gradient is formed remains controversial. Two opposing mechanisms have been proposed: receptor-mediated transcytosis (RMT) and restricted extracellul...
متن کاملThe gradient of Gurken, a long-range morphogen, is directly regulated by Cbl-mediated endocytosis.
The asymmetric localization of gurken mRNA and post-translational sorting mechanisms are responsible for the polar distribution of Gurken protein in Drosophila. However, endocytosis of Egfr, the receptor for Gurken in the follicle cells, also plays a role in shaping the extracellular gradient of the Gurken morphogen. Previously, we have found that mutation in the Cbl gene caused elevated Egfr s...
متن کاملConversion of an Extracellular Dpp/BMP Morphogen Gradient into an Inverse Transcriptional Gradient
Morphogen gradients control body pattern by differentially regulating cellular behavior. Here, we analyze the molecular events underlying the primary response to the Dpp/BMP morphogen in Drosophila. Throughout development, Dpp transduction causes the graded transcriptional downregulation of the brinker (brk) gene. We first provide significance for the brk expression gradient by showing that dif...
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ژورنال
عنوان ژورنال: Developmental Biology
سال: 1998
ISSN: 0012-1606
DOI: 10.1006/dbio.1997.8752