Identification and characterization of a reptilian GnRH receptor from the leopard gecko

被引：25

作者：

Ikemoto, T ^{[1
]}

Enomoto, M ^{[1
]}

Park, MK ^{[1
]}

机构：

[1] Univ Tokyo, Grad Sch Sci, Dept Biol Sci, Tokyo 1130033, Japan

来源：

MOLECULAR AND CELLULAR ENDOCRINOLOGY | 2004年 / 214卷 / 1-2期

关键词：

gonadotropin-releasing hormone; GnRH; GnRH receptor; reptile; Leopard gecko; Eublepharis macularius; reproduction;

D O I：

10.1016/j.mce.2003.10.062

中图分类号：

Q2 [细胞生物学];

学科分类号：

071009 ; 090102 ;

摘要：

Gonadotropin-releasing hormone (GnRH) plays a pivotal role in the regulation of reproductive functions though interactions with its specific receptor. We describe the first molecular cloning and characterization of a full-length GnRH receptor (GnRHR) from the leopard gecko Eublepharis macularius. It has a distinct genomic structure consisting of five exons and four introns, compared with all the other reported GnRHR genes. A native GnRH form, cGnRH-II, stimulated inositol phosphate (IP) production in COS-7 cells transiently transfected with the GnRHR, in a dose dependent manner. The mRNA was expressed in all the tissues and organs examined. Molecular phylogenetic analysis revealed that the cloned GnRHR belongs to the type 2/nonmammalian 1 GnRHR. Low-expression levels were observed front the pituitary glands of reproductively active leopard geckos, indicating the possibility that there is at least one more type of GnRHR highly expressed in the pituitary gland for the gonadotropin secretion in this reptile. (C) 2003 Elsevier Ireland Ltd. All rights reserved.

引用

页码：137 / 147

页数：11

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