An ALS-associated KIF5A mutant forms oligomers and aggregates and induces neuronal toxicity.
An ALS-associated KIF5A mutant forms oligomers and aggregates and induces neuronal toxicity.
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DOI:
10.1111/gtc.12936
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发表时间:
2022-06
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影响因子:
--
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中科院分区:
文献类型:
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KIF5A is a kinesin superfamily motor protein that transports various cargos in neurons. Mutations in Kif5a cause familial amyotrophic lateral sclerosis (ALS). These ALS mutations are in the intron of Kif5a and induce mis‐splicing of KIF5A mRNA, leading to splicing out of exon 27, which in human KIF5A encodes the cargo‐binding tail domain of KIF5A. Therefore, it has been suggested that ALS is caused by loss of function of KIF5A. However, the precise mechanisms regarding how mutations in KIF5A cause ALS remain unclear. Here, we show that an ALS‐associated mutant of KIF5A, KIF5A(Δexon27), is predisposed to form oligomers and aggregates in cultured mouse cell lines. Interestingly, purified KIF5A(Δexon27) oligomers showed more active movement on microtubules than wild‐type KIF5A in vitro. Purified KIF5A(∆exon27) was prone to form aggregates in vitro. Moreover, KIF5A(Δexon27)‐expressing Caenorhabditis elegans neurons showed morphological defects. These data collectively suggest that ALS‐associated mutations of KIF5A are toxic gain‐of‐function mutations rather than simple loss‐of‐function mutations. ALS‐associated KIF5A protein aggregates in cells and in vitro and has neurotoxicity.
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DOI:
10.1083/jcb.201703201
发表时间:
2017-10-02
期刊:
The Journal of cell biology
影响因子:
--
作者:
Huynh W;Vale RD
通讯作者:
Vale RD
DOI:
10.1093/brain/awx370
发表时间:
2018-03-01
期刊:
Brain : a journal of neurology
影响因子:
--
作者:
Brenner D;Yilmaz R;Müller K;Grehl T;Petri S;Meyer T;Grosskreutz J;Weydt P;Ruf W;Neuwirth C;Weber M;Pinto S;Claeys KG;Schrank B;Jordan B;Knehr A;Günther K;Hübers A;Zeller D;Kubisch C;Jablonka S;Sendtner M;Klopstock T;de Carvalho M;Sperfeld A;Borck G;Volk AE;Dorst J;Weis J;Otto M;Schuster J;Del Tredici K;Braak H;Danzer KM;Freischmidt A;Meitinger T;Strom TM;Ludolph AC;Andersen PM;Weishaupt JH;German ALS network MND-NET
通讯作者:
German ALS network MND-NET
影响因子:
9.9
作者:
Harms, M. B.;Ori-McKenney, K. M.;Baloh, R. H.
通讯作者:
Baloh, R. H.
影响因子:
21.3
作者:
Coy, DL;Hancock, WO;Howard, J
通讯作者:
Howard, J
影响因子:
16.2
作者:
Kanai, Y;Dohmae, N;Hirokawa, N
通讯作者:
Hirokawa, N