Temporal requirement for SMN in motoneuron development
نویسندگان
چکیده
منابع مشابه
Temporal requirement for SMN in motoneuron development.
Proper function of the motor unit is dependent upon the correct development of dendrites and axons. The infant/childhood onset motoneuron disease spinal muscular atrophy (SMA), caused by low levels of the survival motor neuron (SMN) protein, is characterized by muscle denervation and paralysis. Although different SMA models have shown neuromuscular junction defects and/or motor axon defects, a ...
متن کاملTemporal requirement for high SMN expression in SMA mice.
Spinal muscular atrophy (SMA) is caused by loss of the survival motor neuron 1 gene (SMN1) and retention of the SMN2 gene, resulting in reduced SMN. SMA mice can be rescued with high expression of SMN in neurons, but when is this high expression required? We have developed a SMA mouse with inducible expression of SMN to address the temporal requirement for high SMN expression. Both embryonic an...
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Spinal muscular atrophy (SMA) is caused by homozygous loss of the survival motor neuron (SMN1) gene. In virtually all SMA patients, a nearly identical copy gene is present, SMN2. SMN2 cannot fully compensate for the loss of SMN1 because the majority of transcripts derived from SMN2 lack a critical exon (exon 7), resulting in a dysfunctional SMN protein. Therefore, the critical distinction betwe...
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15 صفحه اولSMN Requirement for Synaptic Vesicle, Active Zone and Microtubule Postnatal Organization in Motor Nerve Terminals
Low levels of the Survival Motor Neuron (SMN) protein produce Spinal Muscular Atrophy (SMA), a severe monogenetic disease in infants characterized by muscle weakness and impaired synaptic transmission. We report here severe structural and functional alterations in the organization of the organelles and the cytoskeleton of motor nerve terminals in a mouse model of SMA. The decrease in SMN levels...
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ژورنال
عنوان ژورنال: Human Molecular Genetics
سال: 2013
ISSN: 1460-2083,0964-6906
DOI: 10.1093/hmg/ddt110