ログイン
言語:

WEKO3

  • トップ
  • ランキング
To
lat lon distance
To

Field does not validate



インデックスリンク

インデックスツリー

メールアドレスを入力してください。

WEKO

One fine body…

WEKO

One fine body…

アイテム

  1. 115 理学系研究科・理学部
  2. 14 生物科学専攻
  3. 1151420 博士論文(生物科学専攻)
  1. 0 資料タイプ別
  2. 20 学位論文
  3. 021 博士論文

Evolution of the complement components with unique domain structure

https://doi.org/10.15083/00005617
https://doi.org/10.15083/00005617
a1bc224a-878d-4b8e-812b-153dc436fa54
名前 / ファイル ライセンス アクション
1236141959_29761.pdf 1236141959_29761.pdf (4.0 MB)
Item type 学位論文 / Thesis or Dissertation(1)
公開日 2014-02-24
タイトル
タイトル Evolution of the complement components with unique domain structure
言語
言語 eng
資源タイプ
資源 http://purl.org/coar/resource_type/c_46ec
タイプ thesis
ID登録
ID登録 10.15083/00005617
ID登録タイプ JaLC
その他のタイトル
その他のタイトル 固有のドメイン構造を持つ補体系因子の進化
著者 Kimura, Ayuko

× Kimura, Ayuko

WEKO 11705

Kimura, Ayuko

Search repository
著者別名
識別子Scheme WEKO
識別子 11706
姓名 木村, 鮎子
著者所属
著者所属 東京大学大学院理学系研究科 生物科学専攻
Abstract
内容記述タイプ Abstract
内容記述 To elucidate the evolutionary origin and history of the blood complement system, comprehensive cloning of the five complement gene families, the complement component 3 (C3), factor B (fB), mannan-binding protein-associated serine protease (MASP), complement component 6 (C6), and factor I (fI) families, was performed in agnathan lamprey and cnidarian sea anemone. In additions, for the C6 family which was not found in these animals, chondrichthyes shark was analyzed by RT-PCR using the consensus-degenerate hybrid oligonucleotide primers. The draft genome search and RACE analysis using cnidarian, Nematostella vectensis resulted in identification of the C3, fB and MASP genes. These genes were completely absent in the draft genome sequences of placozoa, porifera, and choanofllagelata, indicating that the multi-component complement system was established in the early stage of eumetazoan evolution before the divergence of Cnidaria and Bilateria. In situ hybridization showed the endoderm-specific expression of the identified cnidarian complement genes, indicating that the cnidarian complement system acts mainly in the primitive gut cavity called coelenteron, the only cavity facing endoderm. On the other hand, the liver EST analysis of lamprey, Lethenteron japonicum, gave the genes for the C3, fB, MASP, and fI families. However, no evidence for the gene duplication/functional divergence within these families, which was essential for establishing the classical activation pathway of the mammalian complement system, was obtained. RT-PCR analysis using the universal primers for the C6 family genes identified one C6 gene from shark but none from lamprey, indicating that the unique domain structure of C6 family was established in a common ancestor of the jawed vertebrate.These results suggest that the complement system comprising at least three components, C3, fB, and MASP, was established in the common ancestor of eumetazoan animals more than 600 million years ago. Function of the primitive complement system was most probably the protection of the gut cavity with primitive circulatory function. Remaining two families, the fI and C6 families, appeared in the primitive vertebrates, before the divergence of cyclostomes for the fI family (more than 500 million years ago), and before the divergence of the Chondrichthyes for the C6 family (more than 400 million years ago), respectively. The gene duplication/functional divergence within each complement gene family, which played essential roles in establishing the sophisticated complement system of jawed vertebrates, was occurred immediately after appearance of all the five complement gene families in the common ancestor of the jawed vertebrates
書誌情報 発行日 2009-03-23
学位名
学位名 博士(理学)
学位
値 doctoral
学位分野
Science (Rigaku)(理学)
学位授与機関
学位授与機関名 University of Tokyo (東京大学)
研究科・専攻
Department of Biological Sciences, Graduate School of Science (理学系研究科生物科学専攻)
学位授与年月日
学位授与年月日 2009-03-23
学位授与番号
学位授与番号 甲第24505号
学位記番号
博理第5403号
戻る
0
views
See details
Views

Versions

Ver.1 2021-03-01 19:41:56.180654
Show All versions

Share

Mendeley Twitter Facebook Print Addthis

Cite as

エクスポート

OAI-PMH
  • OAI-PMH JPCOAR 2.0
  • OAI-PMH JPCOAR 1.0
  • OAI-PMH DublinCore
  • OAI-PMH DDI
Other Formats
  • JSON
  • BIBTEX

Confirm


Powered by WEKO3


Powered by WEKO3