PMID: 9547239May 9, 1998Paper

Development of bone morphogenetic protein receptors in the nervous system and possible roles in regulating trkC expression

The Journal of Neuroscience : the Official Journal of the Society for Neuroscience
D ZhangJ A Kessler

Abstract

Characterization of bone morphogenetic protein receptor (BMPR) expression during development is necessary for understanding the role of these factors during neural maturation. In this study, in situ hybridization analyses demonstrate that BMP-specific type I (BMPR-IA and BMPR-IB) and type II (BMPR-II) receptor mRNAs are expressed at significant levels in multiple regions of the CNS, cranial ganglia, and peripheral sensory and autonomic ganglia during the embryonic and neonatal periods. All three BMP receptor subunits are expressed within periventricular generative zones. BMPR-IA is more abundant than the other receptor subtypes, with widespread expression in the brain, cranial ganglia, and peripheral ganglia. By contrast, BMPR-IB mRNA displays significant expression within more restricted regions, including the anterior olfactory nuclei. BMPR-II mRNA exhibits peak expression within the cerebellar Purkinje cell layer and the hippocampus, as well as within cranial ganglia. The distribution of BMP receptors within large neurons in adult dorsal root ganglia suggested a possible role in regulating expression of the neurotrophin receptor trkC. This hypothesis was tested in explant cultures of embryonic day 15 (E15) and postnatal day ...Continue Reading

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