期刊
PARASITOLOGY INTERNATIONAL
卷 62, 期 5, 页码 475-482出版社
ELSEVIER IRELAND LTD
DOI: 10.1016/j.parint.2013.04.006
关键词
Apicomplexa; Calcium ionophore; Toxoplasma egress; Kinase; Actin; Myosin; Dynamin
类别
资金
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)
- Fundacao Carlos Chagas Filho de Amparo a Pesquisa do Estado do Rio de Janeiro (FAPERJ)
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES)
Toxoplasma gondii is a protozoan parasite that can infect the nucleated cells of all warm-blooded animals. Despite its medical and veterinary importance, the egress of T. gondii from host cells has not been fully elucidated. This process is usually studied with calcium ionophores, which artificially trigger T. gondii egress. Among the diverse signaling events that take place during egress, kinases appear to play a crucial role. In this work we employed several kinase inhibitors to examine their role in egress: although parasite egress was only slightly impaired by treatment with the PI3K and PKC inhibitors wortmannin and staurosporine, the addition of the tyrosine kinase-specific inhibitor genistein efficiently blocked the exit of parasites by more than 50%. IPA-3, a non-ATP-competitive inhibitor of p21-activated kinases, which play a role in actin cytoskeleton remodeling inhibited egress of T. gondii by only 15%. The myosin motor inhibitor blebbistatin and the actin polymerization inhibitor cytochalasin D also blocked the egress of T. gondii. Nevertheless, dynasore, which is known to block the GTPase activity of dynamin, had little or no effect on T. gondii egress. (c) 2013 Elsevier Ireland Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据