TIA1 is a gender-specific disease modifier of a mild mouse model of spinal muscular atrophy.
TIA1 is a gender-specific disease modifier of a mild mouse model of spinal muscular atrophy.
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DOI:
10.1038/s41598-017-07468-2
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发表时间:
2017-08-03
影响因子:
4.6
通讯作者:
Singh RN
中科院分区:
文献类型:
--
作者:
Howell MD;Ottesen EW;Singh NN;Anderson RL;Seo J;Sivanesan S;Whitley EM;Singh RN
Spinal muscular atrophy (SMA) is caused by deletions or mutations of Survival Motor Neuron 1 (SMN1) gene. The nearly identical SMN2 cannot compensate for SMN1 loss due to exon 7 skipping. The allele C (C +/+) mouse recapitulates a mild SMA-like phenotype and offers an ideal system to monitor the role of disease-modifying factors over a long time. T-cell-restricted intracellular antigen 1 (TIA1) regulates SMN exon 7 splicing. TIA1 is reported to be downregulated in obese patients, although it is not known if the effect is gender-specific. We show that female Tia1-knockout (Tia1 −/−) mice gain significant body weight (BW) during early postnatal development. We next examined the effect of Tia1 deletion in novel C +/+/Tia1 −/− mice. Underscoring the opposing effects of Tia1 deletion and low SMN level on BW gain, both C +/+ and C +/+/Tia1 −/− females showed similar BW gain trajectory at all time points during our study. We observed early tail necrosis in C +/+/Tia1 −/− females but not in males. We show enhanced impairment of male reproductive organ development and exacerbation of the C +/+/Tia1 −/− testis transcriptome. Our findings implicate a protein factor as a gender-specific modifier of a mild mouse model of SMA.
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影响因子:
12.4
作者:
Howell, Matthew D.;Ottesen, Eric W.;Singh, Ravindra N.
通讯作者:
Singh, Ravindra N.
影响因子:
11.2
作者:
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Udd, Bjarne
影响因子:
4.2
作者:
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通讯作者:
Singh RN
影响因子:
4.3
作者:
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通讯作者:
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影响因子:
64.8
作者:
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通讯作者:
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