Downregulation of VAPB expression in motor neurons derived from induced pluripotent stem cells of ALS8 patients.
Downregulation of VAPB expression in motor neurons derived from induced pluripotent stem cells of ALS8 patients.
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DOI:
10.1093/hmg/ddr284
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发表时间:
2011-09-15
影响因子:
3.5
通讯作者:
Zatz M
中科院分区:
文献类型:
--
作者:
Mitne-Neto M;Machado-Costa M;Marchetto MC;Bengtson MH;Joazeiro CA;Tsuda H;Bellen HJ;Silva HC;Oliveira AS;Lazar M;Muotri AR;Zatz M
Amyotrophic lateral sclerosis (ALS) is an incurable neuromuscular disease that leads to a profound loss of life quality and premature death. Around 10% of the cases are inherited and ALS8 is an autosomal dominant form of familial ALS caused by mutations in the vamp-associated protein B/C (VAPB) gene. The VAPB protein is involved in many cellular processes and it likely contributes to the pathogenesis of other forms of ALS besides ALS8. A number of successful drug tests in ALS animal models could not be translated to humans underscoring the need for novel approaches. The induced pluripotent stem cells (iPSC) technology brings new hope, since it can be used to model and investigate diseases in vitro. Here we present an additional tool to study ALS based on ALS8-iPSC. Fibroblasts from ALS8 patients and their non-carrier siblings were successfully reprogrammed to a pluripotent state and differentiated into motor neurons. We show for the first time that VAPB protein levels are reduced in ALS8-derived motor neurons but, in contrast to over-expression systems, cytoplasmic aggregates could not be identified. Our results suggest that optimal levels of VAPB may play a central role in the pathogenesis of ALS8, in agreement with the observed reduction of VAPB in sporadic ALS.
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影响因子:
56.9
作者:
Kwiatkowski, T. J., Jr.;Bosco, D. A.;Brown, R. H., Jr.
通讯作者:
Brown, R. H., Jr.
影响因子:
4.8
作者:
Furuita, Kyoko;Jee, JunGoo;Kojima, Chojiro
通讯作者:
Kojima, Chojiro
影响因子:
11.2
作者:
Joazeiro, Claudio A. P.;Anderson, Kenneth C.;Hunter, Tony
通讯作者:
Hunter, Tony
影响因子:
4.7
作者:
Bergemalm, Daniel;Forsberg, Karin;Marklund, Stefan L.
通讯作者:
Marklund, Stefan L.
影响因子:
4.8
作者:
Kim, SoHui;Leal, Sonia S.;Lev, Sima
通讯作者:
Lev, Sima