Actin polymerization driven by WASH causes V-ATPase retrieval and vesicle neutralization before exocytosis.

Actin polymerization driven by WASH causes V-ATPase retrieval and vesicle neutralization before exocytosis.
复制标题

WASH 驱动的肌动蛋白聚合导致 V-ATP 酶修复和胞吐前囊泡中和。

DOI:
10.1083/jcb.201009119
复制
发表时间:
2011-05-30
期刊:
The Journal of cell biology
影响因子:
--
通讯作者:
Insall RH
Insall RH
中科院分区:
其他
文献类型:
--
作者:
Carnell M;Zech T;Calaminus SD;Ura S;Hagedorn M;Johnston SA;May RC;Soldati T;Machesky LM;Insall RH

文献摘要

参考文献

被引文献

相似文献

WASH 覆盖成熟的溶酶体,是不可消化物质的胞吐作用所必需的。 WASP 和 SCAR 同源物 (WASH) 是最近发现的、进化上保守的肌动蛋白聚合调节因子。在本文中,我们证明 WASH 覆盖成熟的盘基网柄菌溶酶体,并且对于不可消化物质的胞吐作用至关重要。一个相关的过程,即从哺乳动物巨噬细胞中排出致命的内体病原体新型隐球菌,也使用了 WASH 包被的囊泡,并且表达显性失活 WASH 突变体的细胞无法有效地排出新型隐球菌。 D. discoideum WASH 导致丝状肌动蛋白 (F-肌动蛋白) 斑块在溶酶体上形成,导致空泡腺苷三磷酸酶 (V-ATPase) 的去除和溶酶体的中和以形成后溶酶体。如果没有 WASH,则不会形成斑块或涂层,看不到中性后溶酶体,并且不消化的物质(例如葡聚糖)不会被胞吐。当用拉特库林阻断肌动蛋白聚合时,会出现类似的结果。已知 V-ATP 酶与 F-肌动蛋白密切结合。我们的数据暗示了一种新的机制,即肌动蛋白介导的分选,其中 WASH 和 Arp2/3 复合物在囊泡上聚合肌动蛋白,以驱动 V-ATP 酶等蛋白质的分离和回收。
WASH coats mature lysosomes and is required for exocytosis of indigestible material. WASP and SCAR homologue (WASH) is a recently identified and evolutionarily conserved regulator of actin polymerization. In this paper, we show that WASH coats mature Dictyostelium discoideum lysosomes and is essential for exocytosis of indigestible material. A related process, the expulsion of the lethal endosomal pathogen Cryptococcus neoformans from mammalian macrophages, also uses WASH-coated vesicles, and cells expressing dominant negative WASH mutants inefficiently expel C. neoformans. D. discoideum WASH causes filamentous actin (F-actin) patches to form on lysosomes, leading to the removal of vacuolar adenosine triphosphatase (V-ATPase) and the neutralization of lysosomes to form postlysosomes. Without WASH, no patches or coats are formed, neutral postlysosomes are not seen, and indigestible material such as dextran is not exocytosed. Similar results occur when actin polymerization is blocked with latrunculin. V-ATPases are known to bind avidly to F-actin. Our data imply a new mechanism, actin-mediated sorting, in which WASH and the Arp2/3 complex polymerize actin on vesicles to drive the separation and recycling of proteins such as the V-ATPase.
DOI: 10.1016/j.cub.2006.09.061
发表时间: 2006-11-07
期刊: CURRENT BIOLOGY
影响因子: 9.2
作者:
Alvarez, Mauricio;Casadevall, Arturo
通讯作者: Casadevall, Arturo
DOI: 10.1016/j.cub.2003.09.037
发表时间: 2003-10-14
期刊: CURRENT BIOLOGY
影响因子: 9.2
作者:
Drengk, A;Fritsch, J;Maniak, M
通讯作者: Maniak, M
DOI: 10.1128/mcb.18.12.7064
发表时间: 1998-12-01
影响因子: 5.3
作者:
Parra, KJ;Kane, PM
通讯作者: Kane, PM
DOI: 10.1016/s0960-9822(97)70093-9
发表时间: 1997-03-01
期刊: CURRENT BIOLOGY
影响因子: 9.2
作者:
Rauchenberger, R;Hacker, U;Maniak, M
通讯作者: Maniak, M
肌动蛋白结合蛋白 Coronin 直接调节 Arp2/3 复合物的活性和功能。
DOI: 10.1083/jcb.200206113
发表时间: 2002-12-23
影响因子: 7.8
作者:
Humphries, Christine L;Balcer, Heath I;D'Agostino, Jessica L;Winsor, Barbara;Drubin, David G;Barnes, Georjana;Andrews, Brenda J;Goode, Bruce L
通讯作者: Goode, Bruce L