1
|
Ma KY, Zhang SF, Wang SS, Qiu GF. Molecular cloning and characterization of a gonadotropin-releasing hormone receptor homolog in the Chinese mitten crab, Eriocheir sinensis. Gene 2018; 665:111-118. [PMID: 29730424 DOI: 10.1016/j.gene.2018.05.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Revised: 04/18/2018] [Accepted: 05/02/2018] [Indexed: 02/06/2023]
Abstract
As an essential mediator in the Gonadotropin-releasing hormone (GnRH) signaling pathway, GnRH receptor (GnRHR) coupled to GnRH, plays an important role in activating the downstream pathway after stimulating a series of cascades to regulate reproduction. To detect the existence of GnRHR and potential GnRH signaling pathway, we cloned and characterized GnRHR in the Chinese mitten crab, Eriocheir sinensis (named EsGnRHR). The full-length EsGnRHR cDNA is 2038 bp in length, including an open reading frame (ORF) of 1566 bp, a 57 bp 5'-untranslated region (5'-UTR) and a 415 bp 3'-UTR. Prediction of transmembrane domains in protein sequence revealed that the EsGnRHR protein contained seven hydrophobic transmembrane regions (TMs). Reverse transcription PCR revealed that EsGnRHR was mainly expressed in the thoracic nerve group and ovary, and weakly distributed in the testis and brain. In situ hybridization further demonstrated that EsGnRHR mRNA was localized at the protocerebrum and deutocerebrum. In the ovary and testis, the hybridization signal was dominantly at the earlier developmental stages. The signal was mainly localized in the cytoplasm cell in the ovary, and in the epithelium cell in the testis. During the different stages of gonadal development, EsGnRHR displayed increasing trends in both female and male when analyzed by quantitative real-time PCR, suggesting that EsGnRHR was involved in controlling gonadal development. Our study provides important information for further research on the molecular mechanisms underlying crab development.
Collapse
Affiliation(s)
- Ke-Yi Ma
- National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Shanghai Ocean University, Ministry of Education, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, Shanghai Ocean University, China; Shanghai Engineering Research Center of Aquaculture, Shanghai Ocean University, China
| | - Shu-Fang Zhang
- National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Shanghai Ocean University, Ministry of Education, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, Shanghai Ocean University, China; Shanghai Engineering Research Center of Aquaculture, Shanghai Ocean University, China
| | - Si-Si Wang
- National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Shanghai Ocean University, Ministry of Education, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, Shanghai Ocean University, China; Shanghai Engineering Research Center of Aquaculture, Shanghai Ocean University, China
| | - Gao-Feng Qiu
- National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Shanghai Ocean University, Ministry of Education, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, Shanghai Ocean University, China; Shanghai Engineering Research Center of Aquaculture, Shanghai Ocean University, China.
| |
Collapse
|