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Bone morphogenetic protein receptor expressions in the adult rat brain.

Authors: Miyagi, M  Mikawa, S  Hasegawa, T  Sho, K  Matsuyama, Y  Sato, K 
Citation: Miyagi M, etal., Neuroscience. 2011 Mar 10;176:93-109. Epub 2010 Dec 23.
Pubmed: (View Article at PubMed) PMID:21185359
DOI: Full-text: DOI:10.1016/j.neuroscience.2010.12.027

Bone morphogenetic proteins (BMP) are members of the transforming growth factor beta (TGF-beta) superfamily. BMPs exert its biological functions by interacting with membrane bound receptors belonging to the serine/threonine kinase family including bone morphogenetic protein receptor I (BMPRIA, BMPRIB) and type II (BMPRII). Although BMPR expressions have been well described in the early development of the CNS, little information is available for their expressions in the adult CNS. We, thus, investigated BMPR expressions in the adult rat CNS using immunohistochemistry. Here, we show that BMPRIA, IB and II proteins are widely expressed throughout the adult CNS. Interestingly, we observed that BMPRIA, IB and II proteins are abundantly expressed in many kinds of axons. In addition, we found that BAMRIB-IR was preferentially expressed in dendrites of many neurons throughout the CNS, while BMPRIA was mainly expressed in cell bodies, showing that BMPRIA and BMPRIB are differentially targeted in a single neuron. In addition, besides abundant BMPR expressions in neurons, we exhibited BMPR expressions in astrocytes and ependymal cells. These data indicate that BMPRs are more widely expressed throughout the adult CNS than previously reported, and their continued abundant expressions in the adult brain strongly support the idea that BMPRs play pivotal roles also in the adult brain.

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CRRD Object Information
CRRD ID: 5129479
Created: 2011-03-30
Species: All species
Last Modified: 2011-03-30
Status: ACTIVE



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RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.