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Arimura S, Wong MKS, Inoue R, Kawano M, Shimoyama K, Fujimori C, Tokunaga K, Takagi W, Hyodo S. Functional characterization of follicle-stimulating hormone and luteinizing hormone receptors in cloudy catshark, Scyliorhinus torazame. Gen Comp Endocrinol 2024; 354:114542. [PMID: 38685391 DOI: 10.1016/j.ygcen.2024.114542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 04/08/2024] [Accepted: 04/26/2024] [Indexed: 05/02/2024]
Abstract
The follicle-stimulating hormone receptor (FSHR) and luteinizing hormone receptor (LHR) in cloudy catshark were cloned, and recombinant FSHR and LHR were expressed for characterization. Ventral lobe extract (VLE) from the pituitary contains homologous FSH and LH, and it stimulated the cAMP signaling of FSHR and LHR dose-dependently. Two transcript variants of LHR (LHR-L with exon 10 and LHR-S without) were identified, and LHR-S was the dominant form with higher basal cAMP activity without VLE stimulation. Among various developmental stages of follicles, FSHR expression was mainly associated with the pre-vitellogenic and early white follicles. When follicles were recruited into vitellogenesis, the expression of FSHR decreased while of LHR was upregulated reciprocally, suggesting that LHR may also be responsible for the control of vitellogenesis in chondrichthyans. The expression of LHR-L was upregulated among maturing follicles before ovulation, indicating LHR-L could have a specific role in receiving the LH surge signal for final maturation. Plasma LH-like activity was transiently increased prior to the progesterone (P4)-surge and testosterone-drop at the beginning of P4-phase, supporting a pituitary control of follicle-maturation via LH signaling in chondrichthyans. The expression of follicular LHR was downregulated during the P4-phase when LH-like activity was high, indicating that the LH-dependent downregulation of LHR is conserved in chondrichthyans as it is in other vertebrate lineages. (213 words).
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Affiliation(s)
- Shogo Arimura
- Laboratory of Physiology, Department of Marine Biosciences, Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8564, Japan.
| | - Marty Kwok Shing Wong
- Laboratory of Physiology, Department of Marine Biosciences, Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8564, Japan; Center for Earth Surface System Dynamics, Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8564, Japan.
| | - Ryotaro Inoue
- Laboratory of Physiology, Department of Marine Biosciences, Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8564, Japan.
| | - Mai Kawano
- Laboratory of Physiology, Department of Marine Biosciences, Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8564, Japan.
| | - Koya Shimoyama
- Laboratory of Physiology, Department of Marine Biosciences, Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8564, Japan.
| | - Chika Fujimori
- Laboratory of Physiology, Department of Marine Biosciences, Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8564, Japan; Department of Biological Sciences, Faculty of Science, Hokkaido University, Kita-10 Nishi-8, Kita-ku, Sapporo, Hokkaido 060-0810, Japan.
| | - Kotaro Tokunaga
- Ibaraki Prefectural Oarai Aquarium, Oarai, Ibaraki 311-1301, Japan.
| | - Wataru Takagi
- Laboratory of Physiology, Department of Marine Biosciences, Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8564, Japan.
| | - Susumu Hyodo
- Laboratory of Physiology, Department of Marine Biosciences, Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8564, Japan; Center for Earth Surface System Dynamics, Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8564, Japan.
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2
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Suzuki H, Kazeto Y, Gen K, Ozaki Y. Functional analysis of recombinant single-chain Japanese eel Fsh and Lh produced in FreeStyle 293-F cell lines: Binding specificities to their receptors and differential efficacy on testicular steroidogenesis. Gen Comp Endocrinol 2020; 285:113241. [PMID: 31400434 DOI: 10.1016/j.ygcen.2019.113241] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Revised: 07/11/2019] [Accepted: 08/06/2019] [Indexed: 01/02/2023]
Abstract
Pituitary gonadotropins, follicle-stimulating hormone (Fsh) and luteinizing hormone (Lh), play central roles in the control of gonadal development of vertebrates. In mammals, Fsh and Lh exclusively activate their respective cognate receptors: Fsh receptor (Fshr) in the Sertoli cell and Lh/choriogonadotropin receptor (Lhcgr) in the Leydig cell. In teleosts, the distinct functions of Fsh and Lh and information on cellular localization of their receptors are still poorly understood. Recently we established FreeStyle 293-F cell lines producing recombinant Japanese eel Fsh and Lh (reFsh and reLh), which form a single chain consisting of a common α-subunit and β-subunits. In this study, we conducted functional analyses of reFsh and reLh, focusing on the binding specificities to their receptors and effects on testicular steroidogenesis in vitro. Assays with gonadotropin receptors-expressing COS-7 cells indicated reFsh stimulated its cognate receptor, meanwhile reLh activated both receptors. Although results of in vitro incubations showed that reFsh and reLh induced testicular 11-ketotestosterone production in a dose and time-dependent manner by upregulating expression of steroidogenic enzymes, the effective doses of reLh were apparently lower and the effects of reLh emerged faster in comparison with reFsh. Results of quantitative real-time PCR using testicular cell fractions showed that fshr and lhcgr1 mRNA were detected both in Sertoli and Leydig cells. These analyses revealed that reFsh and reLh were biologically active and hence will be useful for future studies. Moreover, our data showed that both eel Fsh and Lh acted as steroidogenic hormones through their receptors in testicular somatic cells; however, Lh was more potent on androgen production, implying differential functions on spermatogenesis.
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Affiliation(s)
- Hiroshi Suzuki
- Graduate School of Marine Science and Technology, Tokyo University of Marine Science and Technology, 4-5-7 Konan, Minato-ku, Tokyo 108-8477, Japan; National Research Institute of Aquaculture, Japan Fisheries Research and Education Agency, 224-1 Hiruda, Tamaki, Watarai, Mie 519-0423, Japan.
| | - Yukinori Kazeto
- National Research Institute of Aquaculture, Japan Fisheries Research and Education Agency, Tsuiura, Kamiura, Saiki, Oita 879-2602, Japan.
| | - Koichiro Gen
- Seikai National Fisheries Research Institute, Japan Fisheries Research and Education Agency, 1551-8 Taira, Nagasaki 851-2213, Japan.
| | - Yuichi Ozaki
- National Research Institute of Aquaculture, Japan Fisheries Research and Education Agency, 224-1 Hiruda, Tamaki, Watarai, Mie 519-0423, Japan.
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3
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Hollander-Cohen L, Böhm B, Hausken K, Levavi-Sivan B. Ontogeny of the specificity of gonadotropin receptors and gene expression in carp. Endocr Connect 2019; 8:1433-1446. [PMID: 31581128 PMCID: PMC6826172 DOI: 10.1530/ec-19-0389] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Accepted: 10/02/2019] [Indexed: 02/02/2023]
Abstract
The pituitary gonadotropins, luteinizing hormone (LH) and follicle-stimulating hormone (FSH), are the principle endocrine drivers of reproductive processes in the gonads of jawed vertebrates. Canonically, FSH recruits and maintains selected ovarian follicles for maturation and LH induces the stages of germinal vesicle breakdown and ovulation. In mammals, LH and FSH specifically activate cognate G-protein-coupled receptors that affect the proteins involved in steroidogenesis, protein hormone synthesis, and gametogenesis. This dual-gonadotropin model also exists in some fish species, but not in all. In fact, due to their diverse number of species, extended number of ecological niches, and remarkably flexible reproductive strategies, fish are appropriate as models to understand the co-evolution of gonadotropins and their receptors. In this study, we cloned and characterized the expression profile over the final stages of ovarian maturation of carp (Cyprinus carpio) LHCGR and FSHR. Expression of both gonadotropin receptors increased in the later stage of early vitellogenesis, suggesting that both LH and FSH play a role in the development of mature follicles. We additionally tested the activation of cLHCGR and cFSHR using homologous and heterologous recombinant gonadotropins in order to gain insight into an evolutionary model of permissive gonadotropin receptor function. These data suggest that carp (Cyprinus carpio) gonad development and maturation depends on a specific gonadotropin profile that does not reflect the temporally distinct dual-gonadotropin model observed in salmonids or mammals, and that permissive gonadotropin receptor activation is a specific feature of Ostariophysi, not all teleosts.
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Affiliation(s)
- Lian Hollander-Cohen
- Department of Animal Sciences, The Robert H. Smith Faculty of Agriculture, Food, and Environment, Hebrew University of Jerusalem, Rehovot, Israel
| | - Benjamin Böhm
- Department of Animal Sciences, The Robert H. Smith Faculty of Agriculture, Food, and Environment, Hebrew University of Jerusalem, Rehovot, Israel
| | - Krist Hausken
- Department of Animal Sciences, The Robert H. Smith Faculty of Agriculture, Food, and Environment, Hebrew University of Jerusalem, Rehovot, Israel
| | - Berta Levavi-Sivan
- Department of Animal Sciences, The Robert H. Smith Faculty of Agriculture, Food, and Environment, Hebrew University of Jerusalem, Rehovot, Israel
- Correspondence should be addressed to B Levavi-Sivan:
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Jia Y, Lei J. Molecular function of gonadotrophins and their receptors in the ovarian development of turbot (Scophthalmus maximus). Gen Comp Endocrinol 2019; 277:17-19. [PMID: 30769011 DOI: 10.1016/j.ygcen.2019.02.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 12/14/2018] [Accepted: 02/11/2019] [Indexed: 11/19/2022]
Abstract
Gonadotropins (GtHs) and their receptors (follicle-stimulating hormone receptor, FSHR; luteinizing hormone receptor, LHR) are involved in the regulation of gametogenesis and play important roles during the reproductive cycles in vertebrate species, including fish. This minireview focuses on the molecular characterization and quantification of GtHs (common glycoprotein α subunit CGα, FSHβ, and LHβ) and their receptors (FSHR and LHR) throughout the reproductive cycle of female turbot Scophthalmus maximus. Information about GtHs, FSHR, LHR as well as other ligand-receptors interaction from different teleosts are also included in this review for the implications they may have on the functions of GtHs, FSHR and LHR in the reproductive development of turbot. These findings may enhance our understanding of the physiological roles of the GtHs, FSHR and LHR in controlling of flatfish ovarian development during the reproductive cycle and contributing to the improvement of management strategies for turbots in captivity.
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Affiliation(s)
- Yudong Jia
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao Key Laboratory for Marine Fish Breeding and Biotechnology, Qingdao 266071, China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China.
| | - Jilin Lei
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao Key Laboratory for Marine Fish Breeding and Biotechnology, Qingdao 266071, China
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5
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Yuan LJ, Peng C, Liu BH, Feng JB, Qiu GF. Identification and Characterization of a Luteinizing Hormone Receptor (LHR) Homolog from the Chinese Mitten Crab Eriocheir sinensis. Int J Mol Sci 2019; 20:ijms20071736. [PMID: 30965614 PMCID: PMC6480239 DOI: 10.3390/ijms20071736] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Revised: 04/01/2019] [Accepted: 04/04/2019] [Indexed: 02/06/2023] Open
Abstract
Luteinizing hormone (LH), a pituitary gonadotropin, coupled with LH receptor (LHR) is essential for the regulation of the gonadal maturation in vertebrates. Although LH homolog has been detected by immunocytochemical analysis, and its possible role in ovarian maturation was revealed in decapod crustacean, so far there is no molecular evidence for the existence of LHR. In this study, we cloned a novel LHR homolog (named EsLHR) from the Chinese mitten crab Eriocheir sinensis. The complete sequence of the EsLHR cDNA was 2775bp, encoding a protein of 924 amino acids, sharing 71% amino acids identity with the ant Zootermopsis nevadensis LHR. EsLHR expression was found to be high in the ovary, while low in testis, gill, brain, and heart, and no expression in the thoracic ganglion, eye stalk, muscle, and hepatopancreas. Quantitative PCR revealed that the expression level of EsLHR mRNA was significantly higher in the ovaries in previtellogenic (Pvt), late vitellogenic (Lvt), and germinal vesicle breakdown (GVBD) stages than that in the vitellogenic (Mvt) and early vitellogenic (Evt) stages (P < 0.05), and, the highest and the lowest expression were in Lvt, and Evt, respectively. The strong signal was mainly localized in the ooplasm of Pvt oocyte as detected by in situ hybridization. The crab GnRH homolog can significantly induce the expression of EsLHR mRNA at 36 hours post injection in vivo (P < 0.01), suggesting that EsLHR may be involved in regulating ovarian development through GnRH signaling pathway in the mitten crab.
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Affiliation(s)
- Li-Juan Yuan
- National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, China.
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai 201306, China.
- Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, Shanghai Ocean University, Shanghai 201306, China.
- Shanghai Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai 201306, China.
| | - Chao Peng
- National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, China.
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai 201306, China.
- Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, Shanghai Ocean University, Shanghai 201306, China.
- Shanghai Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai 201306, China.
| | - Bi-Hai Liu
- National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, China.
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai 201306, China.
- Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, Shanghai Ocean University, Shanghai 201306, China.
- Shanghai Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai 201306, China.
| | - Jiang-Bin Feng
- National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, China.
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai 201306, China.
- Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, Shanghai Ocean University, Shanghai 201306, China.
- Shanghai Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai 201306, China.
| | - Gao-Feng Qiu
- National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, China.
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai 201306, China.
- Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, Shanghai Ocean University, Shanghai 201306, China.
- Shanghai Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai 201306, China.
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6
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Jedidi I, Ouchari M, Yin Q. Sex chromosomes-linked single-gene disorders involved in human infertility. Eur J Med Genet 2018; 62:103560. [PMID: 31402110 DOI: 10.1016/j.ejmg.2018.10.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2018] [Revised: 10/01/2018] [Accepted: 10/24/2018] [Indexed: 10/28/2022]
Abstract
Human infertility is a healthcare problem that has a worldwide impact. Genetic causes of human infertility include chromosomal aneuploidies and rearrangements and single-gene defects. The sex chromosomes (X and Y) are critical players in human fertility since they contain several genes essential for sex determination and reproductive traits for both men and women. This paper provides a review of the most common sex chromosomes-linked single-gene disorders involved in human infertility and their corresponding phenotypes. In addition to the Y-linked SRY gene, which mutations may cause XY gonadal dysgenesis and sex reversal, the deletions of genes present in AZF regions of the Y chromosome (DAZ, RBMY, DBY and USP9Y genes) are implicated in varying degrees of spermatogenic dysfunction. Furthermore, a list of X-linked genes (KAL1, NR0B1, AR, TEX11, FMR1, PGRMC1, BMP15 and POF1 and 2 regions genes (XPNPEP2, POF1B, DACH2, CHM and DIAPH2)) were reported to have critical roles in pubertal and reproductive deficiencies in humans, affecting only men, only women or both sexes. Mutations in these genes may be transmitted to the offspring by a dominant or a recessive inheritance.
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Affiliation(s)
- Ines Jedidi
- Faculty of Medicine of Sousse, Sousse, Tunisia.
| | - Mouna Ouchari
- Clinical Center, National Institutes of Health, Bethesda, MD, USA
| | - Qinan Yin
- Clinical Center, National Institutes of Health, Bethesda, MD, USA; Department of Obstetrics and Gynecology, China Meitan General Hospital, Beijing, China
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7
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Peng C, Xiao L, Chen H, Han Y, Huang M, Zhao M, Li S, Liu Y, Yang Y, Zhang H, Zhang Y, Lin H. Cloning, expression and functional characterization of a novel luteinizing hormone receptor in the orange-spotted grouper, Epinephelus coioides. Gen Comp Endocrinol 2018; 267:90-97. [PMID: 29913168 DOI: 10.1016/j.ygcen.2018.06.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 05/06/2018] [Accepted: 06/15/2018] [Indexed: 01/09/2023]
Abstract
Luteinizing hormone receptor (LHR) plays a critical role in reproduction by mediating LH signaling in the gonad. In this study, we cloned a novel lhr gene from the orange-spotted grouper, named glhr2. The cloned complete open reading frame sequence of glhr2 was 2082 bp in length, encoding a protein of 693 amino acids, sharing approximately 50% amino acid identity with glhr1. glhr1 and glhr2 were primarily expressed in gonad, brain and hypothalamus with low expression in other tissues such as gill, spleen, etc. The expressions of both glhr1 and glhr2 increased during vitellogenesis, while decreased during natural female to male sex change. The two gLHRs both could be activated by equine LH or human chorionic gonadotropin, but not by human follicle stimulating hormone. Both gLHR1 and gLHR2 activation stimulated the expression of cAMP response element driven reporter gene in a dose-dependent manner, while gLHR2 but not gLHR1 also activated serum response element driven reporter gene expression. This was the first study to demonstrate that two active LHRs exist in fish with possible different functional roles.
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Affiliation(s)
- Cheng Peng
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, People's Republic of China; Guangdong Institute of Applied Biological Resources, Guangzhou 510260, People's Republic of China
| | - Ling Xiao
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, People's Republic of China
| | - Huimin Chen
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, People's Republic of China
| | - Yulong Han
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, People's Republic of China
| | - Minwei Huang
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, People's Republic of China
| | - Mi Zhao
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, People's Republic of China
| | - Shuisheng Li
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, People's Republic of China.
| | - Yun Liu
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, People's Republic of China
| | - Yuqing Yang
- Marine Fisheries Development Center of Guangdong Province, Huizhou 516081, People's Republic of China
| | - Haifa Zhang
- Marine Fisheries Development Center of Guangdong Province, Huizhou 516081, People's Republic of China
| | - Yong Zhang
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, People's Republic of China; Marine Fisheries Development Center of Guangdong Province, Huizhou 516081, People's Republic of China.
| | - Haoran Lin
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, People's Republic of China; Guangdong Institute of Applied Biological Resources, Guangzhou 510260, People's Republic of China; College of Ocean, Hainan University, Haikou 570228, People's Republic of China
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8
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Basak R, Roy A, Rai U. In silico analysis, temporal expression and gonadotropic regulation of receptors for follicle-stimulating hormone and luteinizing hormone in testis of spotted snakehead Channa punctata. JOURNAL OF FISH BIOLOGY 2018; 93:53-71. [PMID: 29931764 DOI: 10.1111/jfb.13727] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Accepted: 04/19/2018] [Indexed: 06/08/2023]
Abstract
This study in spotted snakehead Channa punctata was aimed to develop a comprehensive understanding of testicular gonadotropin receptors, from their sequence characterization, temporal expression to gonadotropic regulation, in seasonally breeding teleosts. A single form of follicle-stimulating hormone receptor (cpfshra) and luteinizing hormone/choriogonadotropin receptor (cplhcgr), was identified from testicular transcriptome data of C. punctata. Although deduced full-length protein sequence for cpFshra (694 amino acids) and cpLhcgr (691 amino acids) showed homology with their counterparts of other vertebrates, multiple insertion-deletion-substitution of residues suggest marked alterations in their structure and ligand specificity. The absolute quantification of testicular cpfshra and cplhcgr was estimated along the reproductive cycle following real-time PCR. The temporal expression profile showed highest testicular expression of both the gonadotropin receptors during resting phase. Their expression progressively decreased during preparatory and spawning phases concomitant with spermatogonial proliferation and differentiation and spermiogenesis. However, levels of cpfshra and cplhcgr sharply increased during post-spawning when seminiferous lobules were largely devoid of germ cells. To explore gonadotropic regulation of testicular cpfshra and cplhcgr, one group of fish of resting phase was administered with single dose of human chorionic gonadotropin (hCG; 5,000 IU/kg body mass) on day 0 and sacrificed on day 3 and day 5, while another group receiving two injections of hCG (day 0 and day 7) was sacrificed on day 14. The expression pattern of testicular gonadotropin receptors in hCG-treated fish sacrificed after 3, 5 and 14 days was similar to that of preparatory, spawning and postspawning phases, respectively. Likewise, testicular histology of hCG-treated fish sacrificed on day 3, day 5 and day 14 was comparable with that of preparatory, early spawning and late spawning phases, respectively. In light of the fact that gonadotropin receptors are largely expressed on somatic cells, an apparent decrease in testicular cpfshra and cplhcgr levels during preparatory and spawning phases or after 3 and 5 days from first hCG injection might not be due to downregulation of their expression. Rather, this could be due to dilution of somatic cell mRNA by large amount of germ cell mRNA. To verify this assumption, effect of hCG on plasma level of androgens was investigated employing enzyme-linked immunosorbent assay. A marked increase in plasma level of testosterone and 11-ketotestosterone was observed after hCG treatment in C. punctata. This would have been possible only when hCG upregulated the expression of testicular gonadotropin receptors.
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Affiliation(s)
| | - Alivia Roy
- Department of Zoology, University of Delhi, Delhi, India
| | - Umesh Rai
- Department of Zoology, University of Delhi, Delhi, India
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9
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Pradhan A, Nayak M, Samanta M, Panda RP, Rath SC, Giri SS, Saha A. Gonadotropin receptors of Labeo rohita: Cloning and characterization of full-length cDNAs and their expression analysis during annual reproductive cycle. Gen Comp Endocrinol 2018; 263:21-31. [PMID: 29660307 DOI: 10.1016/j.ygcen.2018.04.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 04/10/2018] [Accepted: 04/12/2018] [Indexed: 12/22/2022]
Abstract
Follicle-stimulating hormone (Fsh) and luteinizing hormone (Lh), secreted from pituitary, stimulate gonadal function by binding to their cognate receptors FSH receptor (FSHR), and LH/choriogonadotropin receptor (LHCGR). Rohu (Labeo rohita) is a commercially important seasonal breeder freshwater fish species, but till date, the regulation of expression of gonadotropins and their receptors gene during different phases of annual reproductive cycle has not been investigated. We envisaged the critical role of these molecules during seasonal gonadal development in this carp species. We cloned full- length cDNAs of fshra and lhcgrba from rohu testis using RACE (Rapid amplification of cDNA ends) and analyzed their expression along with fsh and lh by quantitative real time PCR (qRT-PCR) assay at various gonadal developmental stages of the annual reproductive cycle. Full-length rohu fshra and lhcgrba cDNA encodes 670 and 716 amino acids respectively, and in adult fish, they were widely expressed in brain, pituitary, gonad, liver, kidney, head kidney, heart, muscle, gill, fin, eye and intestine. In male, both fsh and fshra transcripts showed high level of expression during spermatogenesis, however, in female, expression level was found to be higher in the fully grown oocyte stages. The expression of rohu lh and lhcgrba mRNA increased with increment of gonadosomatic index and showed highest level during spermiation stage in male and fully matured oocyte stage in female. These results together may suggest the involvement of fshra and lhcgrba in regulating function of seasonal gonadal development in rohu.
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MESH Headings
- Animals
- Cloning, Molecular
- Cyprinidae/genetics
- Cyprinidae/metabolism
- DNA, Complementary/isolation & purification
- DNA, Complementary/metabolism
- Female
- Gene Expression Profiling/veterinary
- Gonads/metabolism
- Male
- Pituitary Gland/metabolism
- Receptors, FSH/metabolism
- Receptors, Gonadotropin/genetics
- Receptors, Gonadotropin/isolation & purification
- Receptors, Gonadotropin/metabolism
- Receptors, LH/genetics
- Receptors, LH/metabolism
- Reproduction/genetics
- Sequence Analysis, DNA/veterinary
- Transcriptome
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Affiliation(s)
- Avinash Pradhan
- ICAR-Central Institute of Freshwater Aquaculture, Kausalyaganga, Bhubaneswar, Odisha, India
| | - Madhusmita Nayak
- ICAR-Central Institute of Freshwater Aquaculture, Kausalyaganga, Bhubaneswar, Odisha, India
| | - Mrinal Samanta
- ICAR-Central Institute of Freshwater Aquaculture, Kausalyaganga, Bhubaneswar, Odisha, India
| | - Rudra Prasanna Panda
- ICAR-Central Institute of Freshwater Aquaculture, Kausalyaganga, Bhubaneswar, Odisha, India
| | - Suresh Chandra Rath
- ICAR-Central Institute of Freshwater Aquaculture, Kausalyaganga, Bhubaneswar, Odisha, India
| | - Shiba Shankar Giri
- ICAR-Central Institute of Freshwater Aquaculture, Kausalyaganga, Bhubaneswar, Odisha, India
| | - Ashis Saha
- ICAR-Central Institute of Freshwater Aquaculture, Kausalyaganga, Bhubaneswar, Odisha, India.
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Jia Y, Sun A, Meng Z, Liu B, Lei J. Molecular characterization and quantification of the follicle-stimulating hormone receptor in turbot (Scophthalmus maximus). FISH PHYSIOLOGY AND BIOCHEMISTRY 2016; 42:179-191. [PMID: 26358315 DOI: 10.1007/s10695-015-0128-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Accepted: 09/07/2015] [Indexed: 06/05/2023]
Abstract
Molecular cloning, characterization, and functional analysis of follicle-stimulating hormone receptor (FSHR) in female turbot (Scophthalmus maximus) were evaluated. Results showed that the full-length FSHR cDNA was 3824 bp long and contained a 2202 bp open reading frame that encoded a mature protein of 733 amino acids (aa) and a signal peptide of 18 aa. Multiple sequence analyses showed that turbot FSHR has high homology with the corresponding genes of other teleosts and significant homology with that of Hippoglossus hippoglossus. Turbot FSHR has the typical structural architecture of glycoprotein hormone receptors consisting of a large N-terminal extracellular domain, seven transmembrane domains and short C-terminal intracellular domain. FSHR mRNA was found to be abundant in the ovaries, but deficient in eyes, intestine, brain, muscle, gills, spleen, stomach, heart and kidney. Furthermore, FSHR mRNA was found to increase gradually from pre-vitellogenesis to migratory nucleus stages, with the highest values observed during the late vitellogenesis stage of the reproductive cycle. However, FSHR mRNA was found to decrease dramatically during the atresia stage. Meanwhile, functional analysis with HEK293T cells continual expressing FSHR demonstrated that FSHR was specifically stimulated by ovine FSH, but not ovine LH. These results indicate that turbot FSHR is mainly involved in the stimulation of vitellogenesis, regulation of oocyte maturation as well as promotion of ovarian development via specific ligand binding. These findings open doors to further investigation of physiological functions of FSHR, which will be valuable for fish reproduction and broodstock management.
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Affiliation(s)
- Yudong Jia
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, No. 106 Nanjing Road, Qingdao, 266071, People's Republic of China.
- Qingdao Key Laboratory for Marine Fish Breeding and Biotechnology, Qingdao, 266071, People's Republic of China.
| | - Ai Sun
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, No. 106 Nanjing Road, Qingdao, 266071, People's Republic of China
- Qingdao Key Laboratory for Marine Fish Breeding and Biotechnology, Qingdao, 266071, People's Republic of China
| | - Zhen Meng
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, No. 106 Nanjing Road, Qingdao, 266071, People's Republic of China
- Qingdao Key Laboratory for Marine Fish Breeding and Biotechnology, Qingdao, 266071, People's Republic of China
| | - Baoliang Liu
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, No. 106 Nanjing Road, Qingdao, 266071, People's Republic of China
- Qingdao Key Laboratory for Marine Fish Breeding and Biotechnology, Qingdao, 266071, People's Republic of China
| | - Jilin Lei
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, No. 106 Nanjing Road, Qingdao, 266071, People's Republic of China.
- Qingdao Key Laboratory for Marine Fish Breeding and Biotechnology, Qingdao, 266071, People's Republic of China.
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11
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Nyuji M, Kazeto Y, Izumida D, Tani K, Suzuki H, Hamada K, Mekuchi M, Gen K, Soyano K, Okuzawa K. Greater amberjack Fsh, Lh, and their receptors: Plasma and mRNA profiles during ovarian development. Gen Comp Endocrinol 2016; 225:224-234. [PMID: 26519759 DOI: 10.1016/j.ygcen.2015.10.008] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2015] [Revised: 10/07/2015] [Accepted: 10/12/2015] [Indexed: 12/23/2022]
Abstract
To understand the endocrine regulation of ovarian development in a multiple spawning fish, the relationship between gonadotropins (Gths; follicle-stimulating hormone [Fsh] and luteinizing hormone [Lh]) and their receptors (Gthrs; Fshr and Lhr) were investigated in greater amberjack (Seriola dumerili). cDNAs encoding the Gth subunits (Fshβ, Lhβ, and glycoprotein α [Gpα]) and Gthrs were cloned. The in vitro reporter gene assay using recombinant hormones revealed that greater amberjack Fshr and Lhr responded strongly to their own ligands. Competitive enzyme-linked immunosorbent assays (ELISAs) were developed for measuring greater amberjack Fsh and Lh. Anti-Fsh and anti-Lh antibodies were raised against recombinant chimeric single-chain Gths consisting of greater amberjack Fshβ (or Lhβ) with rabbit GPα. The validation study showed that the ELISAs were precise (intra- and inter-assay coefficient of variation, <10%) and sensitive (detection limit of 0.2ng/ml for Fsh and 0.8ng/ml for Lh) with low cross-reactivity. A good parallelism between the standard curve and serial dilutions of greater amberjack plasma and pituitary extract were obtained. In female greater amberjack, pituitary fshb, ovarian fshr, and plasma E2 gradually increased during ovarian development, and plasma Fsh significantly increased during the post-spawning period. This suggests that Fsh plays a role throughout ovarian development and during the post-spawning period. Pituitary lhb, ovarian lhr, and plasma Lh were high during the spawning period, suggesting that the synthesis and secretion of Lh, and Lhr expression are upregulated to induce final oocyte maturation and ovulation.
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Affiliation(s)
- Mitsuo Nyuji
- National Research Institute of Fisheries Science, Fisheries Research Agency, Yokohama 236-8648, Japan.
| | - Yukinori Kazeto
- National Research Institute of Aquaculture, Fisheries Research Agency, Tamaki 519-0423, Japan
| | - Daisuke Izumida
- Institute for East China Sea Research, Nagasaki University, Nagasaki 851-2213, Japan
| | - Kosuke Tani
- Institute for East China Sea Research, Nagasaki University, Nagasaki 851-2213, Japan
| | - Hiroshi Suzuki
- National Research Institute of Aquaculture, Fisheries Research Agency, Tamaki 519-0423, Japan
| | - Kazuhisa Hamada
- Komame Branch, Stock Enhancement Technology Development Center, National Research Institute of Aquaculture, Fisheries Research Agency, Otsuki 788-0315, Japan
| | - Miyuki Mekuchi
- National Research Institute of Fisheries Science, Fisheries Research Agency, Yokohama 236-8648, Japan
| | - Koichiro Gen
- Seikai National Fisheries Research Institute, Fisheries Research Agency, Nagasaki 851-2231, Japan
| | - Kiyoshi Soyano
- Institute for East China Sea Research, Nagasaki University, Nagasaki 851-2213, Japan
| | - Koichi Okuzawa
- National Research Institute of Aquaculture, Fisheries Research Agency, Tamaki 519-0423, Japan
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Maugars G, Dufour S. Demonstration of the Coexistence of Duplicated LH Receptors in Teleosts, and Their Origin in Ancestral Actinopterygians. PLoS One 2015; 10:e0135184. [PMID: 26271038 PMCID: PMC4536197 DOI: 10.1371/journal.pone.0135184] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Accepted: 07/18/2015] [Indexed: 11/18/2022] Open
Abstract
Pituitary gonadotropins, FSH and LH, control gonad activity in vertebrates, via binding to their respective receptors, FSHR and LHR, members of GPCR superfamily. Until recently, it was accepted that gnathostomes possess a single FSHR and a single LHR, encoded by fshr and lhcgr genes. We reinvestigated this question, focusing on vertebrate species of key-phylogenetical positions. Genome analyses supported the presence of a single fshr and a single lhcgr in chondrichthyans, and in sarcopterygians including mammals, birds, amphibians and coelacanth. In contrast, we identified a single fshr but two lhgcr in basal teleosts, the eels. We further showed the coexistence of duplicated lhgcr in other actinopterygians, including a non-teleost, the gar, and other teleosts, e.g. Mexican tetra, platyfish, or tilapia. Phylogeny and synteny analyses supported the existence in actinopterygians of two lhgcr paralogs (lhgcr1/ lhgcr2), which do not result from the teleost-specific whole-genome duplication (3R), but likely from a local gene duplication that occurred early in the actinopterygian lineage. Due to gene losses, there was no impact of 3R on the number of gonadotropin receptors in extant teleosts. Additional gene losses during teleost radiation, led to a single lhgcr (lhgcr1 or lhgcr2) in some species, e.g. medaka and zebrafish. Sequence comparison highlighted divergences in the extracellular and intracellular domains of the duplicated lhgcr, suggesting differential properties such as ligand binding and activation mechanisms. Comparison of tissue distribution in the European eel, revealed that fshr and both lhgcr transcripts are expressed in the ovary and testis, but are differentially expressed in non-gonadal tissues such as brain or eye. Differences in structure-activity relationships and tissue expression may have contributed as selective drives in the conservation of the duplicated lhgcr. This study revises the evolutionary scenario and nomenclature of gonadotropin receptors, and opens new research avenues on the roles of duplicated LHR in actinopterygians.
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Affiliation(s)
- Gersende Maugars
- Muséum National d'Histoire Naturelle, Sorbonne Universités, Research Unit BOREA, Biology of Aquatic Organisms and Ecosystems, CNRS 7208-IRD 207-UPMC-UCBN, Paris, France
| | - Sylvie Dufour
- Muséum National d'Histoire Naturelle, Sorbonne Universités, Research Unit BOREA, Biology of Aquatic Organisms and Ecosystems, CNRS 7208-IRD 207-UPMC-UCBN, Paris, France
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13
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Jia Y, Meng Z, Niu H, Hu P, Lei J. Molecular cloning, characterization, and expression analysis of luteinizing hormone receptor gene in turbot (Scophthalmus maximus). FISH PHYSIOLOGY AND BIOCHEMISTRY 2014; 40:1639-1650. [PMID: 24965493 DOI: 10.1007/s10695-014-9954-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2014] [Accepted: 06/16/2014] [Indexed: 06/03/2023]
Abstract
The luteinizing hormone receptor (LHR) plays a crucial role in female reproduction. In the present study, full-length sequence coding for the LHR was obtained from female turbot (Scophthalmus maximus) by homology cloning and a strategy based on rapid amplification of cDNA end-polymerase chain reaction. The full-length LHR cDNA was 3,184 bp long and contained a 2,058-bp open reading frame which encoded a protein of 685 amino acids. Multiple sequence alignments of the turbot LHR manifested high homologies with the corresponding sequences of available teleosts and representative vertebrates, and significant homology with that of Hippoglossus hippoglossus. In addition, the turbot LHR showed typical characteristics of glycoprotein receptors, including a long N-terminal extracellular domain, seven transmembrane domains, and a short C-terminal intracellular domain. LHR mRNA was abundant in the ovary, but was deficient in extra-ovarian tissues. Furthermore, LHR mRNA gradually developed from previtellogenesis to migratory nucleus stage, with the highest values observed in migratory nucleus stage during reproductive cycle. However, LHR mRNA sharply decreased in atresia stage. These results suggested that LHR is a typical G protein-coupled receptor that is involved in the promotion of turbot ovarian development and may be related to the final maturation and ovulation of oocyte. These findings contribute to the understanding of the potential roles of LHR in controlling the fish reproductive cycle.
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Affiliation(s)
- Yudong Jia
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, No. 106 Nanjing Road, Qingdao, 266071, People's Republic of China
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