Publication Date:
2009-12-17
Description:
Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disease characterized by loss of motor neurons, denervation of target muscles, muscle atrophy, and paralysis. Understanding ALS pathogenesis may require a fuller understanding of the bidirectional signaling between motor neurons and skeletal muscle fibers at neuromuscular synapses. Here, we show that a key regulator of this signaling is miR-206, a skeletal muscle-specific microRNA that is dramatically induced in a mouse model of ALS. Mice that are genetically deficient in miR-206 form normal neuromuscular synapses during development, but deficiency of miR-206 in the ALS mouse model accelerates disease progression. miR-206 is required for efficient regeneration of neuromuscular synapses after acute nerve injury, which probably accounts for its salutary effects in ALS. miR-206 mediates these effects at least in part through histone deacetylase 4 and fibroblast growth factor signaling pathways. Thus, miR-206 slows ALS progression by sensing motor neuron injury and promoting the compensatory regeneration of neuromuscular synapses.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2796560/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉 〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2796560/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Williams, Andrew H -- Valdez, Gregorio -- Moresi, Viviana -- Qi, Xiaoxia -- McAnally, John -- Elliott, Jeffrey L -- Bassel-Duby, Rhonda -- Sanes, Joshua R -- Olson, Eric N -- 1F32NS061464-01A1/NS/NINDS NIH HHS/ -- R01 HL093039/HL/NHLBI NIH HHS/ -- R01 HL093039-01A1/HL/NHLBI NIH HHS/ -- T32HL007360/HL/NHLBI NIH HHS/ -- U24 CA126608/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2009 Dec 11;326(5959):1549-54. doi: 10.1126/science.1181046.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20007902" target="_blank"〉PubMed〈/a〉
Keywords:
Amyotrophic Lateral Sclerosis/pathology/*physiopathology
;
Animals
;
Axons/physiology
;
Carrier Proteins/genetics/metabolism
;
Disease Models, Animal
;
Disease Progression
;
Fibroblast Growth Factors/metabolism
;
Histone Deacetylases/genetics/metabolism
;
Mice
;
Mice, Transgenic
;
MicroRNAs/genetics/*metabolism
;
Motor Neurons/pathology/*physiology
;
Muscle Denervation
;
Muscle, Skeletal/innervation/*metabolism/pathology
;
MyoD Protein/genetics/metabolism
;
Myogenin/genetics/metabolism
;
Nerve Regeneration
;
Neuromuscular Junction/growth & development/*pathology/*physiology
;
RNA Interference
;
Signal Transduction
;
Transcriptional Activation
;
Up-Regulation
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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