03-P075 The repulsive guidance molecule (RGM) family in chicken
نویسندگان
چکیده
anism would thus be a new way to form a tube. As the generation of the lumen and of the tube itself requires the apparition of an apical domain, we decided to investigate how part of the lateral domain becomes apical. Our first results, using transgenes driven by brachyury regulating sequences, show that several proteins classically involved in antero-posterior and planar polarities could be involved in this process.
منابع مشابه
RGMa and RGMb expression pattern during chicken development suggest unexpected roles for these repulsive guidance molecules in notochord formation, somitogenesis, and myogenesis.
BACKGROUND Repulsive guidance molecules (RGM) are high-affinity ligands for the Netrin receptor Neogenin, and they are crucial for nervous system development including neural tube closure; neuronal and neural crest cell differentiation and axon guidance. Recent studies implicated RGM molecules in bone morphogenetic protein signaling, which regulates a variety of developmental processes. Moreove...
متن کاملRepulsive guidance molecule (RGM) gene function is required for neural tube closure but not retinal topography in the mouse visual system.
The establishment of topographic projections in the developing visual system depends on the spatially and temporally controlled expression of axon guidance molecules. In the developing chick tectum, the graded expression of the repulsive guidance molecule (RGM) has been proposed to be involved in controlling the topography of the retinal ganglion cell (RGC) axon termination zones along the ante...
متن کاملIdentification of the Neogenin-Binding Site on the Repulsive Guidance Molecule A
Repulsive guidance molecule (RGM) is a membrane-bound protein that was originally identified as an axon guidance molecule in the chick retinotectal system. RGMa, one of the 3 isoforms found in mammals, is involved in laminar patterning, cephalic neural tube closure, axon guidance, and inhibition of axonal regeneration. In addition to its roles in the nervous system, RGMa plays a role in enhanci...
متن کاملCentral nervous system injury-induced repulsive guidance molecule expression in the adult human brain.
BACKGROUND The repulsive guidance molecule (RGM) is involved in formation of the central nervous system during development by moderating the repulsion of growing axons. However, the role of RGM in adult central nervous system lesions remains to be clarified. OBJECTIVE To identify and determine RGM expression in adult brains with focal cerebral ischemia or traumatic brain injury and in neuropa...
متن کاملRepulsive guidance molecule plays multiple roles in neuronal differentiation and axon guidance.
Repulsive guidance molecule (RGM) is a membrane-bound protein originally isolated as a guidance molecule for retinal axons. Three RGM isoforms (RGMa-RGMc) exist in vertebrates. We showed previously that RGMa is a cell-survival factor in the neuroepithelium of chick embryos that suppresses the proapoptotic activity of its receptor neogenin. In the present study, we performed gain- and loss-of-fu...
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ورودعنوان ژورنال:
- Mechanisms of Development
دوره 126 شماره
صفحات -
تاریخ انتشار 2009