Elucidation of reproductive endocrine system in hagfish
盲鳗生殖内分泌系统的阐明
基本信息
- 批准号:20570054
- 负责人:
- 金额:$ 3.08万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (C)
- 财政年份:2008
- 资助国家:日本
- 起止时间:2008 至 2010
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Hagfishes, which lack both jaws and vertebrae, are considered the most primitive vertebrate known, living or extinct. Hagfishes have long been the enigma of vertebrate evolution not only due to their evolutionary position but also due to our lack of knowledge on fundamental processes. Key elements of the reproductive endocrine system in hagfish have yet to be elucidated. Here we report the first identification of a gonadotropic hormone (GTH) from the pituitary of the hagfish Paramyxine atami. The hagfish GTH consists of two subunits, α and β, which are synthesized and colocalized in the same cells of the adenohypophysis. The cellular and transcriptional activities of hagfish GTHα and β were significantly correlated with the developmental stages of the gonad. The purified native GTH induced the release of gonadal sex steroids in vitro. From our phylogenetic analysis, we propose that ancestral thyrostimulin alpha subunit and beta subunit gave rise to GTHα and GTHβ of the vertebrate glycoprotein hormone family, respectively. We hypothesize that the identity of a single functional GTH of the hagfish provides critical evidence for the existence of a pituitary-gonadal system in the earliest divergent vertebrate that likely evolved from an ancestral, pre-vertebrate exclusively neuroendocrine mechanism by gradual emergence of a new control level, the pituitary, that is not found in the Protochordates.
八目鳗,没有颌骨和椎骨,被认为是已知的最原始的脊椎动物,生活或灭绝。盲鳗一直是脊椎动物进化的谜,这不仅是因为它们的进化地位,也是因为我们缺乏对基本过程的了解。盲鳗生殖内分泌系统的关键要素尚未阐明。在这里,我们报告的第一个确定的促性腺激素(GTH)从副粘盲鳗热海的垂体。盲鳗GTH由α和β两个亚基组成,它们在腺垂体的相同细胞中合成和共定位。盲鳗GTHα和β的细胞活性和转录活性与性腺的发育阶段显著相关。纯化的天然GTH在体外诱导性腺性类固醇的释放。根据我们的系统发育分析,我们提出祖先甲状腺刺激素α亚基和β亚基分别产生了脊椎动物糖蛋白激素家族的GTHα和GTHβ。我们假设,一个单一的功能GTH的盲鳗的身份提供了重要的证据,在最早的分歧脊椎动物,可能从一个祖先,前脊椎动物完全神经内分泌机制逐渐出现一个新的控制水平,垂体,这是没有发现在原索动物的垂体性腺系统的存在。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
ヌタウナギのGTH細胞に対するエストロジェンとテストステロン投与の影響
雌激素和睾酮给药对盲鳗 GTH 细胞的影响
- DOI:
- 发表时间:2010
- 期刊:
- 影响因子:0
- 作者:内田勝久・森山俊介・千葉洋明・高橋明義・Sower;S.A.;野崎眞澄;平山隆志;平山隆志;野崎眞澄・本田香織・下谷豊和・内田勝久
- 通讯作者:野崎眞澄・本田香織・下谷豊和・内田勝久
クロヌタウナギにおける組替え生殖腺刺激ホルモンの構築
黑盲鳗重组促性腺激素的构建
- DOI:
- 发表时间:2009
- 期刊:
- 影响因子:0
- 作者:M.Yuguchi;T.Yokouchi;R.Tominaga-Wada;T.Kuromori;K.Shinozaki;K.Okada;T.Wada;佐々木江理子;内田勝久・亀井宏泰・森山俊介・山田英佑・千葉洋明・野崎眞澄
- 通讯作者:内田勝久・亀井宏泰・森山俊介・山田英佑・千葉洋明・野崎眞澄
クロヌタウナギの腺下垂体細胞に対するエストロジェンとテストステロン投与の影響。
雌激素和睾酮给药对黑盲鳗腺垂体细胞的影响。
- DOI:
- 发表时间:2009
- 期刊:
- 影响因子:0
- 作者:野崎眞澄;他4名。。
- 通讯作者:他4名。。
Evolutionary origin of a functional gonadotropin in the pituitary of the most primitive vertebrate, hagfish
- DOI:10.1073/pnas.1002208107
- 发表时间:2010-08
- 期刊:
- 影响因子:0
- 作者:K. Uchida;S. Moriyama;H. Chiba;Toyokazu Shimotani;K. Honda;M. Miki;A. Takahashi;S. Sower;M. Nozaki
- 通讯作者:K. Uchida;S. Moriyama;H. Chiba;Toyokazu Shimotani;K. Honda;M. Miki;A. Takahashi;S. Sower;M. Nozaki
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NOZAKI Masumi其他文献
NOZAKI Masumi的其他文献
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{{ truncateString('NOZAKI Masumi', 18)}}的其他基金
Elucidation of reproductive endocrine system in hagfish
盲鳗生殖内分泌系统的阐明
- 批准号:
23570072 - 财政年份:2011
- 资助金额:
$ 3.08万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Identification of adenohypophysial hormones from the hagfish pituitary gland and its evolutional implication
盲鳗垂体腺垂体激素的鉴定及其进化意义
- 批准号:
15570047 - 财政年份:2003
- 资助金额:
$ 3.08万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Comparative endocrinology on the pituitary gland of lampreys and hagfish
七鳃鳗和盲鳗脑下垂体的比较内分泌学
- 批准号:
12640648 - 财政年份:2000
- 资助金额:
$ 3.08万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
HYPOTHALAMO-HYPOPHYSIAL SYSTEM AND CONTROL OF GONADOTROPIN SECRETION IN THE ELASMOBRANCHS
下丘脑-垂体系统和软骨素促性腺激素分泌的控制
- 批准号:
09640789 - 财政年份:1997
- 资助金额:
$ 3.08万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Age-related changes in ovarian function and morpholgy in Japanese monkeys
日本猴卵巢功能和形态的年龄相关变化
- 批准号:
06640863 - 财政年份:1994
- 资助金额:
$ 3.08万 - 项目类别:
Grant-in-Aid for General Scientific Research (C)
Involvement of thuroid gland on the seasonal breeding of Japanese monkeys
甲状腺与日本猴季节性繁殖的关系
- 批准号:
04640688 - 财政年份:1992
- 资助金额:
$ 3.08万 - 项目类别:
Grant-in-Aid for General Scientific Research (C)