期刊
NEUROMUSCULAR DISORDERS
卷 14, 期 11, 页码 711-722出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.nmd.2004.08.009
关键词
SMA; microarrays; RNA binding proteins
Spinal muscular atrophy is a common neuromuscular disorder caused by deletions or mutations within the survival motor neuron gene. The reason for specific motor neuron loss within the disease is still unclear. Expression profiling has been carried out in two models of spinal muscular atrophy; the heterozygote mouse model and human primary muscle cultures from a spinal muscular atrophy patient. A group of RNA binding proteins are up-regulated in spinal muscular atrophy motor neurons. One such protein, BRUNOL3, is highly expressed within spinal cord and muscle and also at the same developmental stage as survival motor neuron. The differential expression of Brunol3 has been confirmed with real-time RT-PCR in spinal cord and muscle of three different models of spinal muscular atrophy. BRUNOL3 has been shown to co-localise with survival motor neuron in the nuclei of neuronal cells and to co-immunoprecipitate with Smn in mouse brain. This is the first time that a link has been established between RNA binding proteins and survival motor neuron within motor neurons. (C) 2004 Published by Elsevier B.V.
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