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非洲爪蟾变态的多种发育程序受到显性负性甲状腺激素受体的抑制。

Diverse developmental programs of Xenopus laevis metamorphosis are inhibited by a dominant negative thyroid hormone receptor.

作者信息

Schreiber A M, Das B, Huang H, Marsh-Armstrong N, Brown D D

机构信息

Carnegie Institution of Washington, Department of Embryology, 115 West University Parkway, Baltimore, MD 21210, USA.

出版信息

Proc Natl Acad Sci U S A. 2001 Sep 11;98(19):10739-44. doi: 10.1073/pnas.191361698. Epub 2001 Aug 21.

Abstract

Metamorphosis of anuran tadpoles is controlled by thyroid hormone (TH). Here we demonstrate that transgenic Xenopus laevis tadpoles expressing a dominant negative form of TH receptor-alpha are resistant to a wide variety of the metamorphic changes induced by TH. This result confirms that TH receptors mediate both early and late developmental programs of metamorphosis as diverse as growth in the brain, limb buds, nose and Meckel's cartilage, remodeling of the intestine, and death and resorption of the gills and tail.

摘要

蛙类蝌蚪的变态发育由甲状腺激素(TH)控制。在此我们证明,表达TH受体α显性负性形式的转基因非洲爪蟾蝌蚪对TH诱导的多种变态变化具有抗性。这一结果证实,TH受体介导了变态发育的早期和晚期发育程序,这些程序包括大脑、肢芽、鼻子和梅克尔软骨的生长、肠道重塑以及鳃和尾巴的死亡与吸收等多种变化。

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