期刊
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY B-BIOCHEMISTRY & MOLECULAR BIOLOGY
卷 164, 期 3, 页码 168-175出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.cbpb.2012.12.006
关键词
Oyster; Crassostrea angulata; Ca-DA1R; Ovarian development; Oocyte locomotion
资金
- National Basic Research Program of China [2010CB126403]
- NSFC [41176113]
- Program for Changjiang Scholars and Innovative Research Team in University [IRT0941]
- Earmarked Fund for Modern Agro-industry Technology Research System [nycytx-47]
We cloned and characterized a complete cDNA encoding a dopamine receptor (DAR) named Ca-DA1R from Fujian oyster, Crassostrea angulata. The 2843 bp long cDNA sequence includes a 916-bp 5'-UTR, the 1197 bp ORE which encodes a putative protein of 399 amino acids, and a 729 bp 3'-UTR The Ca-DA1R sequence possesses typical characteristics of a D1 receptor: two main features being a short third intracellular loop and a long inner COOH-terminal tail domain. Using a real-time PCR approach, expression profiles of Ca-DA1R were analyzed in adult tissues and during the four stages of ovarian development. Ca-DA1R was expressed ubiquitously, although transcript levels varied between tissues, with higher mRNA levels detected in the ovary, labial palps and mantle. During the four stages of ovarian development, Ca-DA1R mRNA expression level was higher in the proliferation stage than in the other three stages during the ovary cycle. In situ hybridization results reveal that the Ca-DA1R mRNA is mainly expressed in the epithelium of the gonoducts. These observations suggest that Ca-DA1R binding of DA probably plays an important role in early ovarian development and via regulating oocyte locomotion cooperates with the 5-HT receptor system during the ovarian cycle in C. angulata. (c) 2012 Elsevier Inc. All rights reserved.
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