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  1. B300 農学部/生命農学研究科
  2. B300a 雑誌掲載論文
  3. 学術雑誌

Meteorus pulchricornis (Wesmael) (Hymenoptera, Braconidae) teratocytes release Mp19 protein in MpVLP, suppressing the function of hyper-spreading hemocytes in Mythimna separata

http://hdl.handle.net/2237/00027936
http://hdl.handle.net/2237/00027936
8c481f3c-a038-428c-89e4-403f1eab492f
名前 / ファイル ライセンス アクション
BR BR 202_Vol 17_77-94 (665.3 kB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2018-04-27
タイトル
タイトル Meteorus pulchricornis (Wesmael) (Hymenoptera, Braconidae) teratocytes release Mp19 protein in MpVLP, suppressing the function of hyper-spreading hemocytes in Mythimna separata
言語 en
著者 Kato, Yoshiaki

× Kato, Yoshiaki

WEKO 76264

en Kato, Yoshiaki

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Sato, Reina

× Sato, Reina

WEKO 76265

en Sato, Reina

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Sano, Takeshi

× Sano, Takeshi

WEKO 76266

en Sano, Takeshi

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Nakamatsu, Yutaka

× Nakamatsu, Yutaka

WEKO 76267

en Nakamatsu, Yutaka

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Miura, Ken

× Miura, Ken

WEKO 76268

en Miura, Ken

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Tanaka, Toshiharu

× Tanaka, Toshiharu

WEKO 76269

en Tanaka, Toshiharu

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アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
キーワード
主題Scheme Other
主題 teratocytes
キーワード
主題Scheme Other
主題 virus-like particle
キーワード
主題Scheme Other
主題 teratocyte-secreted protein
キーワード
主題Scheme Other
主題 venom gland protein
抄録
内容記述タイプ Abstract
内容記述 Insects rely on their immune defense system for protection against foreign substances invading the host hemocoel. The humoral and cellular immune systems have a well-evolved relationship. The cellular immune response, encompassing processes such as encapsulation and nodule formation, is associated with local melanin formation on the surface of the foreign substance. Hemocytes identified as the hyper-spread cells (HSCs) of Mythimna separata larvae deposit melanin around their peripheral edge. Some granulocytes carrying pro-phenoloxydase settle near to the HSCs and may collaborate with them in melanin formation. The HSC population serves as a signal marker on the foreign substance to other hemocytes involved in encapsulation. In the present study, we examined the proteins associated with inhibiting the adhesion and extension of HSCs on foreign substances, focusing on the elimination of HSCs from the parasitized host. The Meteorus pulchricornis (Wesmael) (Hymenoptera, Braconidae) wasp produces virus-like particles (VLPs) consisting of proteinaceous substances, and injects them with its egg into the host hemocoel. The VLPs regulate the host cellular immune system to facilitate the development of the parasitoid eggs and larvae. We found that Mp18 and Mp19 proteins (mainly Mp19) contained in the M. pulchricornis virus-like particle (MpVLP) led to the inhibition of actin formation and filopodia extension in adhesive hemocytes such as granulocytes and plasmatocytes. The same protein identified with anti-Mp19 antibody was released from teratocytes at a later developmental stage. In addition, a parasitoid larva in the late stages of development expressed the same Mp19 gene, whereas smaller amount of Mp18 mRNA was observed. This result indicates that during the larval stage, the teratocytes and larvae express the Mp19 gene without temporal overlap; the protein makes the HSC and the related hemocytes inactive. This is supported by the existence of small particles around teratocytes and host tissues stained with anti-Mp19 antibody from 7 to 8 d after parasitization.
言語 en
出版者
出版者 Research Trends
言語 en
言語
言語 eng
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
タイプ journal article
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
ISSN
収録物識別子タイプ PISSN
収録物識別子 0972-4583
書誌情報 en : Current Topics in Biochemical Research

巻 17, p. 77-94, 発行日 2016
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