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Provedor de dados:  OAK
País:  Japan
Título:  チオレドキシンペルオキシダーゼがマラリア原虫の宿主寄生適応に果たす役割の解明
Analysis of the roles of thioredoxin peroxidase family for adaptation to oxidative stresses in malaria parasites
Autores:  河津, 信一郎
KAWAZU, SHIN-ICHIRO
Data:  2011-06-01
Ano:  2011
Palavras-chave:  感染症
マラリア
ストレス
レドックス
遺伝子改変原虫
Resumo:  チオレドキシンペルオキシダーゼ2-Cys型Prx遺伝子を欠損するローデント(ネズミ)マラリア原虫について、これまでに観察された表現型発現のメカニズムを調べた。(1)哺乳類赤血球内でのガメートサイト(生殖母体)の分化誘導・形成阻害について:赤内期原虫タンパク質の二次元電気泳動解析から、この表現型にタンパク質リン酸化が関与することが示唆された。また(2)スポロゾイト(感染型原虫)の哺乳類宿主への感染性の低下について:マウス感染モデルを用いたRT-PCR解析から、この表現型が、スポロゾイトの障害ではなく、肝内型原虫の発育阻害に起因することが示唆された。 Phenotypes observed in the rodent malaria parasite Plasmodium berghei carrying a targeted knockout of thioredoxin peroxidase, 2-Cys peroxiredoxin gene were investigated and have the following results: (1) Defect in the gametocyte (sexual stage for transition to mosquitoes) development: 2D-PAGE analysis of the blood-stage parasite proteins suggested that the defect is attributed to the protein phosphorylation; (2) Extension in the prepatent time in the sporozoite (infective stage to mammalian hosts from mosquitoes) infection: RT-PCR analysis of the experimental infections suggested that the knockout did not have any effect on the infectivity of the sporozoite, but it affects the development of the liver-stage (EEF) in the mice.
Idioma:  Japonês
Identificador:  http://ir.obihiro.ac.jp/dspace/handle/10322/3031
Editor:  帯広畜産大学
Formato:  application/pdf
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