期刊
NEUROBIOLOGY OF DISEASE
卷 31, 期 3, 页码 361-367出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.nbd.2008.05.014
关键词
apoptosis; Bcl-xL; motor neuron disease; spinal muscular atrophy
资金
- National Health Research Institute [NHRI-EX92-9029sp]
- Department of Medical Research
- National Taiwan University Hospital
Currently, no curative treatment is available for spinal muscular atrophy (SMA). Since the degeneration of spinal motor neurons in SMA is mediated by apoptosis, over-expression of an anti-apoptotic factor, Bcl-x(L), may benefit SMA. Here, we crossed a mouse model of SMA with Bcl-x(L) transgenic mice to create SMA/Bcl-x(L) mice. The Bcl-x(L) expression in the spinal neurons of SMA/Bcl-xL mice was nearly double that in SMA mice. SMA/Bcl-xL mice showed preserved motor function, normalized electrophysiological tests, diminished muscle atrophy, and less motor neuron degeneration. In addition, the life span of SMA/Bcl-x(L) mice was 1.5 times longer than that of SMA mice. Therefore, over-expression of Bcl-xL has a potential for amelioration of SMA, and Bcl-x(L), may be another attractive therapeutic target other than survival motor neuron (SMN) protein for use in future drug screening for SMA. (C) 2008 Elsevier Inc. All rights reserved.
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