Pharmacokinetics, pharmacodynamics, and efficacy of a small-molecule SMN2 splicing modifier in mouse models of spinal muscular atrophy.
Pharmacokinetics, pharmacodynamics, and efficacy of a small-molecule SMN2 splicing modifier in mouse models of spinal muscular atrophy.
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DOI:
10.1093/hmg/ddw062
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发表时间:
2016-05-15
影响因子:
3.5
通讯作者:
Weetall M
中科院分区:
文献类型:
--
作者:
Zhao X;Feng Z;Ling KK;Mollin A;Sheedy J;Yeh S;Petruska J;Narasimhan J;Dakka A;Welch EM;Karp G;Chen KS;Metzger F;Ratni H;Lotti F;Tisdale S;Naryshkin NA;Pellizzoni L;Paushkin S;Ko CP;Weetall M
Spinal muscular atrophy (SMA) is caused by the loss or mutation of both copies of the survival motor neuron 1 (SMN1) gene. The related SMN2 gene is retained, but due to alternative splicing of exon 7, produces insufficient levels of the SMN protein. Here, we systematically characterize the pharmacokinetic and pharmacodynamics properties of the SMN splicing modifier SMN-C1. SMN-C1 is a low-molecular weight compound that promotes the inclusion of exon 7 and increases production of SMN protein in human cells and in two transgenic mouse models of SMA. Furthermore, increases in SMN protein levels in peripheral blood mononuclear cells and skin correlate with those in the central nervous system (CNS), indicating that a change of these levels in blood or skin can be used as a non-invasive surrogate to monitor increases of SMN protein levels in the CNS. Consistent with restored SMN function, SMN-C1 treatment increases the levels of spliceosomal and U7 small-nuclear RNAs and corrects RNA processing defects induced by SMN deficiency in the spinal cord of SMNΔ7 SMA mice. A 100% or greater increase in SMN protein in the CNS of SMNΔ7 SMA mice robustly improves the phenotype. Importantly, a ∼50% increase in SMN leads to long-term survival, but the SMA phenotype is only partially corrected, indicating that certain SMA disease manifestations may respond to treatment at lower doses. Overall, we provide important insights for the translation of pre-clinical data to the clinic and further therapeutic development of this series of molecules for SMA treatment.
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影响因子:
64.5
作者:
LEFEBVRE, S;BURGLEN, L;MELKI, J
通讯作者:
MELKI, J
影响因子:
3.7
作者:
Li DK;Tisdale S;Espinoza-Derout J;Saieva L;Lotti F;Pellizzoni L
通讯作者:
Pellizzoni L
影响因子:
11.2
作者:
Bowerman, Melissa;Swoboda, Kathryn J.;Michalski, John-Paul;Wang, Gen-Sheng;Reeks, Courtney;Beauvais, Ariane;Murphy, Kelley;Woulfe, John;Screaton, Robert A.;Scott, Fraser W.;Kothary, Rashmi
通讯作者:
Kothary, Rashmi
DOI:
10.1038/mt.2011.157
发表时间:
2011-11
期刊:
Molecular therapy : the journal of the American Society of Gene Therapy
影响因子:
--
作者:
通讯作者:
--
影响因子:
10.5
作者:
Hua Y;Liu YH;Sahashi K;Rigo F;Bennett CF;Krainer AR
通讯作者:
Krainer AR