1
|
Noor Z, Zhao Z, Guo S, Wei Z, Cai B, Qin Y, Ma H, Yu Z, Li J, Zhang Y. A Testis-Specific DMRT1 (Double Sex and Mab-3-Related Transcription Factor 1) Plays a Role in Spermatogenesis and Gonadal Development in the Hermaphrodite Boring Giant Clam Tridacna crocea. Int J Mol Sci 2024; 25:5574. [PMID: 38891762 PMCID: PMC11172331 DOI: 10.3390/ijms25115574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Revised: 05/11/2024] [Accepted: 05/16/2024] [Indexed: 06/21/2024] Open
Abstract
The testis-specific double sex and mab-3-related transcription factor 1 (DMRT1) has long been recognized as a crucial player in sex determination across vertebrates, and its essential role in gonadal development and the regulation of spermatogenesis is well established. Here, we report the cloning of the key spermatogenesis-related DMRT1 cDNA, named Tc-DMRT1, from the gonads of Tridacna crocea (T. crocea), with a molecular weight of 41.93 kDa and an isoelectric point of 7.83 (pI). Our hypothesis is that DMRT1 machinery governs spermatogenesis and regulates gonadogenesis. RNAi-mediated Tc-DMRT1 knockdown revealed its critical role in hindering spermatogenesis and reducing expression levels in boring giant clams. A histological analysis showed structural changes, with normal sperm cell counts in the control group (ds-EGFP) but significantly lower concentrations of sperm cells in the experimental group (ds-DMRT1). DMRT1 transcripts during embryogenesis exhibited a significantly high expression pattern (p < 0.05) during the early zygote stage, and whole-embryo in-situ hybridization confirmed its expression pattern throughout embryogenesis. A qRT-PCR analysis of various reproductive stages revealed an abundant expression of Tc-DMRT1 in the gonads during the male reproductive stage. In-situ hybridization showed tissue-specific expression of DMRT1, with a positive signal detected in male-stage gonadal tissues comprising sperm cells, while no signal was detected in other stages. Our study findings provide an initial understanding of the DMRT1 molecular machinery controlling spermatogenesis and its specificity in male-stage gonads of the key bivalve species, Tridacna crocea, and suggest that DMRT1 predominantly functions as a key regulator of spermatogenesis in giant clams.
Collapse
Affiliation(s)
- Zohaib Noor
- Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; (Z.N.); (Z.Z.); (S.G.); (Z.W.); (B.C.); (Y.Q.); (H.M.); (Z.Y.)
- University of Chinese Academy of Sciences, Beijing 100049, China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519015, China
- Hainan Provincial Key Laboratory of Tropical Marine Biology Technology, Sanya Institute of Oceanology Chinese Academy of Sciences, Sanya 572024, China
| | - Zhen Zhao
- Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; (Z.N.); (Z.Z.); (S.G.); (Z.W.); (B.C.); (Y.Q.); (H.M.); (Z.Y.)
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519015, China
- Hainan Provincial Key Laboratory of Tropical Marine Biology Technology, Sanya Institute of Oceanology Chinese Academy of Sciences, Sanya 572024, China
- Animal Science and Technology College, Guangxi University, Nanning 530004, China
| | - Shuming Guo
- Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; (Z.N.); (Z.Z.); (S.G.); (Z.W.); (B.C.); (Y.Q.); (H.M.); (Z.Y.)
- University of Chinese Academy of Sciences, Beijing 100049, China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519015, China
- Hainan Provincial Key Laboratory of Tropical Marine Biology Technology, Sanya Institute of Oceanology Chinese Academy of Sciences, Sanya 572024, China
| | - Zonglu Wei
- Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; (Z.N.); (Z.Z.); (S.G.); (Z.W.); (B.C.); (Y.Q.); (H.M.); (Z.Y.)
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519015, China
- Hainan Provincial Key Laboratory of Tropical Marine Biology Technology, Sanya Institute of Oceanology Chinese Academy of Sciences, Sanya 572024, China
- Animal Science and Technology College, Guangxi University, Nanning 530004, China
| | - Borui Cai
- Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; (Z.N.); (Z.Z.); (S.G.); (Z.W.); (B.C.); (Y.Q.); (H.M.); (Z.Y.)
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519015, China
- Hainan Provincial Key Laboratory of Tropical Marine Biology Technology, Sanya Institute of Oceanology Chinese Academy of Sciences, Sanya 572024, China
| | - Yanping Qin
- Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; (Z.N.); (Z.Z.); (S.G.); (Z.W.); (B.C.); (Y.Q.); (H.M.); (Z.Y.)
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519015, China
- Hainan Provincial Key Laboratory of Tropical Marine Biology Technology, Sanya Institute of Oceanology Chinese Academy of Sciences, Sanya 572024, China
| | - Haitao Ma
- Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; (Z.N.); (Z.Z.); (S.G.); (Z.W.); (B.C.); (Y.Q.); (H.M.); (Z.Y.)
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519015, China
- Hainan Provincial Key Laboratory of Tropical Marine Biology Technology, Sanya Institute of Oceanology Chinese Academy of Sciences, Sanya 572024, China
| | - Ziniu Yu
- Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; (Z.N.); (Z.Z.); (S.G.); (Z.W.); (B.C.); (Y.Q.); (H.M.); (Z.Y.)
- University of Chinese Academy of Sciences, Beijing 100049, China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519015, China
- Hainan Provincial Key Laboratory of Tropical Marine Biology Technology, Sanya Institute of Oceanology Chinese Academy of Sciences, Sanya 572024, China
| | - Jun Li
- Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; (Z.N.); (Z.Z.); (S.G.); (Z.W.); (B.C.); (Y.Q.); (H.M.); (Z.Y.)
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519015, China
- Hainan Provincial Key Laboratory of Tropical Marine Biology Technology, Sanya Institute of Oceanology Chinese Academy of Sciences, Sanya 572024, China
| | - Yuehuan Zhang
- Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; (Z.N.); (Z.Z.); (S.G.); (Z.W.); (B.C.); (Y.Q.); (H.M.); (Z.Y.)
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519015, China
- Hainan Provincial Key Laboratory of Tropical Marine Biology Technology, Sanya Institute of Oceanology Chinese Academy of Sciences, Sanya 572024, China
| |
Collapse
|
2
|
Diawara M, Martin LJ. Regulatory mechanisms of SoxD transcription factors and their influences on male fertility. Reprod Biol 2023; 23:100823. [PMID: 37979495 DOI: 10.1016/j.repbio.2023.100823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 10/31/2023] [Accepted: 11/01/2023] [Indexed: 11/20/2023]
Abstract
Members of the SRY-related box (SOX) subfamily D (SoxD) of transcription factors are well conserved among vertebrate species and play important roles in different stages of male reproductive development. In mammals, the SoxD subfamily contains three members: SOX5, SOX6 and SOX13. Here, we describe their implications in testicular development and spermatogenesis, contributing to fertility. We also cover the mechanisms of action of SoxD transcription factors in gene regulation throughout male development. The specificity of activation of target genes by SoxD members depends, in part, on their post-translational modifications and interactions with other partners. Sperm production in adult males requires the coordination in the regulation of gene expression by different members of the SoxD subfamily of transcription factors in the testis. Specifically, the regulation of genes promoting adequate spermatogenesis by SoxD members is discussed in comparison between species.
Collapse
Affiliation(s)
- Mariama Diawara
- Biology Department, Université de Moncton, Moncton, New Brunswick E1A 3E9, Canada
| | - Luc J Martin
- Biology Department, Université de Moncton, Moncton, New Brunswick E1A 3E9, Canada.
| |
Collapse
|
3
|
Cui Z, Zhang J, Sun Z, Liu B, Han Y, Zhao C, Chang Y. Testis-specific expression pattern of dmrt1 and its putative regulatory region in the sea urchin (Mesocentrotus nudus). Comp Biochem Physiol B Biochem Mol Biol 2021; 257:110668. [PMID: 34384887 DOI: 10.1016/j.cbpb.2021.110668] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 08/04/2021] [Accepted: 08/05/2021] [Indexed: 12/28/2022]
Abstract
Sea urchin (Mseocentrotus nudus) is an economically important mariculture species in several Asian countries. The growth rate and immunocompetence differ by sex in this species. However, the mechanisms of sex determination in M. nudus have remain unclear. In the present study, we focus on the dmrt1 gene of M. nudus (Mndmrt1) to investigate its dynamic expression pattern during different developmental stages. Real-time quantitative PCR (RT-qPCR) revealed that Mndmrt1 exhibits testis-specific expression and undetectable during the whole embryogenesis. With the development of ontogenetic, Mndmrt1 transcripts are first detected at 9 months post-fertilization (mpf). In addition, both the transcripts and protein of Mndmrt1 gene were specifically expressed in spermatogonia and spermatocytes, indicating that it might be a male germ cells marker in sea urchin. Significantly, the 1441 bp promoter sequence of Mndmrt1 gene was obtained by DNA walking, and one positive regulatory region at -1197/ -968 in the promoter, as well as one negative regulatory region at -1441/ -1198 have been identified by promoter activity analysis. Moreover, two regulatory regions contain multiple putative binding sites for transcription factors, including Sp1, Egr1, Sox5, CEBP, GATA and SRY. These findings suggest that Mndmrt1 may be related to testis differentiation and spermatogenesis in sea urchin and will provide an insight into understanding the regulatory mechanism of the dmrt1 gene.
Collapse
Affiliation(s)
- Zhouping Cui
- Key Laboratory of Mariculture& Stock Enhancement in North China Sea, Ministry of Agriculture and Rural Affairs, Dalian Ocean University, Dalian 116023, China
| | - Jian Zhang
- Key Laboratory of Mariculture& Stock Enhancement in North China Sea, Ministry of Agriculture and Rural Affairs, Dalian Ocean University, Dalian 116023, China; School of Life Science, Liaoning Normal University, Dalian 116029, China
| | - Zhihui Sun
- Key Laboratory of Mariculture& Stock Enhancement in North China Sea, Ministry of Agriculture and Rural Affairs, Dalian Ocean University, Dalian 116023, China.
| | - Bingzheng Liu
- Key Laboratory of Mariculture& Stock Enhancement in North China Sea, Ministry of Agriculture and Rural Affairs, Dalian Ocean University, Dalian 116023, China
| | - Yalun Han
- Key Laboratory of Mariculture& Stock Enhancement in North China Sea, Ministry of Agriculture and Rural Affairs, Dalian Ocean University, Dalian 116023, China
| | - Chong Zhao
- Key Laboratory of Mariculture& Stock Enhancement in North China Sea, Ministry of Agriculture and Rural Affairs, Dalian Ocean University, Dalian 116023, China
| | - Yaqing Chang
- Key Laboratory of Mariculture& Stock Enhancement in North China Sea, Ministry of Agriculture and Rural Affairs, Dalian Ocean University, Dalian 116023, China.
| |
Collapse
|
4
|
Mizoguchi B, Valenzuela N. Alternative splicing and thermosensitive expression of Dmrt1 during urogenital development in the painted turtle, Chrysemys picta. PeerJ 2020; 8:e8639. [PMID: 32219017 PMCID: PMC7085901 DOI: 10.7717/peerj.8639] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Accepted: 01/27/2020] [Indexed: 01/03/2023] Open
Abstract
BACKGROUND The doublesex and mab-3 related transcription factor 1 (Dmrt1) is a highly conserved gene across numerous vertebrates and invertebrates in sequence and function. Small aminoacid changes in Dmrt1 are associated with turnovers in sex determination in reptiles. Dmrt1 is upregulated in males during gonadal development in many species, including the painted turtle, Chrysemys picta, a reptile with temperature-dependent sex determination (TSD). Dmrt1 is reported to play different roles during sex determination and differentiation, yet whether these functions are controlled by distinct Dmrt1 spliceoforms remains unclear. While Dmrt1 isoforms have been characterized in various vertebrates, no study has investigated their existence in any turtle. METHODS We examine the painted turtle to identify novel Dmrt1 isoforms that may be present during urogenital development using PCR, profile their expression by RNA-seq across five embryonic stages at male- and female-producing temperatures, and validate their expression pattern via qPCR with transcript-specific fluorescent probes. RESULTS A novel Dmrt1 spliceoform was discovered for the first time in chelonians, lacking exons 2 and 3 (Dmrt1 ΔEx2Ex3). Dmrt1 canonical and ΔEx2Ex3 transcripts were differentialy expressed by temperature at stages 19 and 22 in developing gonads of painted turtles, after the onset of sex determination, and displayed a significant male-biased expression pattern. This transcriptional pattern differs from studies in other turtles and vertebrates that reported Dmrt1 differential expression before or at the onset of sex determination. This study provides the first insight into Dmrt1 transcriptional diversity in turtles and opens the door for future functional studies of the alternative Dmrt1 transcript uncovered here. CONCLUSIONS The discovery of an isoform in turtles indicate that alternative splicing may be a common feature of Dmrt1 across vertebrates, as isoforms are also found in crocodilians, birds, mammals and fish, and this variation remains unexplained. The relatively late-onset of Dmrt1 expression observed here contrasts with other turtles, indicating that Dmrt1 is not the topmost male sex -determining factor in C. picta. When placed in a phylogenetic context, this discrepancy underscores the divergent regulation of Dmrt1, and of sexual development more generally, across vertebrates.
Collapse
Affiliation(s)
- Beatriz Mizoguchi
- Department of Ecology, Evolution and Organismal Biology, Iowa State University, Ames, IA, United States of America
| | - Nicole Valenzuela
- Department of Ecology, Evolution and Organismal Biology, Iowa State University, Ames, IA, United States of America
| |
Collapse
|
5
|
Ren L, Lu J, Fan Y, Hu Y, Li J, Xiao Y, Liu S. Expression Profile Analysis of the Cell Cycle in Diploid and Tetraploid Carassius auratus red var. Front Genet 2020; 11:203. [PMID: 32256518 PMCID: PMC7089929 DOI: 10.3389/fgene.2020.00203] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Accepted: 02/21/2020] [Indexed: 11/15/2022] Open
Abstract
Polyploidization often leads to “transcriptome shock,” and is considered an important factor in evolution of species. Analysis of the cell cycle, which is associated with survival in polyploidy, has proved useful in investigating polyploidization. Here, we used mRNA sequencing to investigate global expression in vitro (in cultured cells) and in vivo (in fin and liver tissues) in both the diploid and tetraploid Carassius auratus red var.. Differential expression (DE) of genes in diploid (7482, 36.0%) and tetraploid (3787, 18.2%) states suggested that in vitro and in vivo conditions dramatically change mRNA expression levels. However, of the 20,771 total shared expressed genes, 18,050 (87.0%), including 17,905 (86.2%) non-differentially expressed genes (DEGs) and 145 (0.7%) DEGs between diploids and tetraploids, showed the same expression trends in both cultured cells and liver tissues. Of the DEGs, four of seven genes in the cell cycle pathway had the same expression trends (upregulated in diploids and tetraploids) in both cultured cells and liver tissues. Quantitative PCR analysis confirmed the same expression trends in the nine DEGs associated with regulation of the cell cycle. This research on common characteristics between diploids and tetraploids provides insights into the potential molecular regulatory mechanisms of polyploidization. The steady changes that occur between diploids and tetraploids in vitro and in vivo show the potential value of studying polyploidy processes using cultured cell lines, especially with respect to cell cycle regulation.
Collapse
Affiliation(s)
- Li Ren
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Normal University, Changsha, China.,College of Life Sciences, Hunan Normal University, Changsha, China
| | - Jiahao Lu
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Normal University, Changsha, China.,College of Life Sciences, Hunan Normal University, Changsha, China
| | - Yunpeng Fan
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Normal University, Changsha, China.,College of Life Sciences, Hunan Normal University, Changsha, China
| | - Yibo Hu
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Normal University, Changsha, China.,College of Life Sciences, Hunan Normal University, Changsha, China
| | - Jiaming Li
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Normal University, Changsha, China.,College of Life Sciences, Hunan Normal University, Changsha, China
| | - Yamei Xiao
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Normal University, Changsha, China.,College of Life Sciences, Hunan Normal University, Changsha, China
| | - Shaojun Liu
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Normal University, Changsha, China.,College of Life Sciences, Hunan Normal University, Changsha, China
| |
Collapse
|
6
|
Yan N, Hu J, Li J, Dong J, Sun C, Ye X. Genomic organization and sexually dimorphic expression of the Dmrt1 gene in largemouth bass (Micropterus salmoides). Comp Biochem Physiol B Biochem Mol Biol 2019; 234:68-77. [PMID: 31078703 DOI: 10.1016/j.cbpb.2019.05.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Revised: 04/28/2019] [Accepted: 05/06/2019] [Indexed: 12/11/2022]
Abstract
Doublesex and Mab-3 related transcription factor (Dmrt) genes play important roles in the process of sex determination and differentiation. In this study, a Dmrt1 gene open reading frame sequence was obtained from the gonadal transcriptome data of largemouth bass (Micropterus salmoides), and identified by cloning and sequencing. The ORF of Dmrt1 is 900 bp long, encodes 298 amino acids, and contains the DM region which is characteristic of Dmrt1. Full gDNA sequence of Dmrt1 was composed of five exons and four introns. RT-PCR and Q-PCR analysis of Dmrt1 were conducted in eight tissues and three developmental stages of mature male and female individuals. In situ hybridization was used to locate the expression of Dmrt1 in the testis and ovary of largemouth bass. The results showed that Dmrt1 was highly expressed in the testis of mature fish, but only weakly expressed in other tissues such as heart, liver, and brain, and exhibited gender dimorphism in the gonads of male and female fish at different stages. Furthermore, the expression level in female fish was very low and decreased gradually with ovary maturation. In situ hybridization indicated positive signals were found in early oocytes, but not in mature oocytes, while strong positive signals were found in all types of mature testis cells. The study showed that the sequence and structure of Dmrt1 were highly conserved and exhibited significant gender dimorphism in largemouth bass, as in other fish species. It is suggested that Dmrt1 plays an important role in sex determination and differentiation in largemouth bass.
Collapse
Affiliation(s)
- Ningning Yan
- Key Laboratory of Tropical & Subtropical Fisheries Resource Application & Cultivation, Ministry of Agriculture, Pearl River Fisheries Institute, Chinese Academy of Fishery Sciences, Guangzhou 510380, China; College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, China
| | - Jie Hu
- Key Laboratory of Tropical & Subtropical Fisheries Resource Application & Cultivation, Ministry of Agriculture, Pearl River Fisheries Institute, Chinese Academy of Fishery Sciences, Guangzhou 510380, China
| | - Jia Li
- Shenzhen Key Lab of Marine Genomics, Guangdong Provincial Key Lab of Molecular Breeding in Marine Economic Animals, BGI-Shenzhen, Shenzhen 518083, China
| | - Junjian Dong
- Key Laboratory of Tropical & Subtropical Fisheries Resource Application & Cultivation, Ministry of Agriculture, Pearl River Fisheries Institute, Chinese Academy of Fishery Sciences, Guangzhou 510380, China
| | - Chengfei Sun
- Key Laboratory of Tropical & Subtropical Fisheries Resource Application & Cultivation, Ministry of Agriculture, Pearl River Fisheries Institute, Chinese Academy of Fishery Sciences, Guangzhou 510380, China; College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, China
| | - Xing Ye
- Key Laboratory of Tropical & Subtropical Fisheries Resource Application & Cultivation, Ministry of Agriculture, Pearl River Fisheries Institute, Chinese Academy of Fishery Sciences, Guangzhou 510380, China; College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, China.
| |
Collapse
|
7
|
Schartl M, Schories S, Wakamatsu Y, Nagao Y, Hashimoto H, Bertin C, Mourot B, Schmidt C, Wilhelm D, Centanin L, Guiguen Y, Herpin A. Sox5 is involved in germ-cell regulation and sex determination in medaka following co-option of nested transposable elements. BMC Biol 2018; 16:16. [PMID: 29378592 PMCID: PMC5789577 DOI: 10.1186/s12915-018-0485-8] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Accepted: 01/11/2018] [Indexed: 12/21/2022] Open
Abstract
Background Sex determination relies on a hierarchically structured network of genes, and is one of the most plastic processes in evolution. The evolution of sex-determining genes within a network, by neo- or sub-functionalization, also requires the regulatory landscape to be rewired to accommodate these novel gene functions. We previously showed that in medaka fish, the regulatory landscape of the master male-determining gene dmrt1bY underwent a profound rearrangement, concomitantly with acquiring a dominant position within the sex-determining network. This rewiring was brought about by the exaptation of a transposable element (TE) called Izanagi, which is co-opted to act as a silencer to turn off the dmrt1bY gene after it performed its function in sex determination. Results We now show that a second TE, Rex1, has been incorporated into Izanagi. The insertion of Rex1 brought in a preformed regulatory element for the transcription factor Sox5, which here functions in establishing the temporal and cell-type-specific expression pattern of dmrt1bY. Mutant analysis demonstrates the importance of Sox5 in the gonadal development of medaka, and possibly in mice, in a dmrt1bY-independent manner. Moreover, Sox5 medaka mutants have complete female-to-male sex reversal. Conclusions Our work reveals an unexpected complexity in TE-mediated transcriptional rewiring, with the exaptation of a second TE into a network already rewired by a TE. We also show a dual role for Sox5 during sex determination: first, as an evolutionarily conserved regulator of germ-cell number in medaka, and second, by de novo regulation of dmrt1 transcriptional activity during primary sex determination due to exaptation of the Rex1 transposable element. Electronic supplementary material The online version of this article (10.1186/s12915-018-0485-8) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Manfred Schartl
- Physiological Chemistry, Biocenter, University of Würzburg, 97074, Würzburg, Germany.,Comprehensive Cancer Center Mainfranken, University Hospital, 97080, Würzburg, Germany.,Texas Institute for Advanced Study and Department of Biology, Texas A&M University, College Station, TX, 77843, USA
| | - Susanne Schories
- Physiological Chemistry, Biocenter, University of Würzburg, 97074, Würzburg, Germany
| | - Yuko Wakamatsu
- Physiological Chemistry, Biocenter, University of Würzburg, 97074, Würzburg, Germany
| | - Yusuke Nagao
- Bioscience and Biotechnology Center, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi, Japan
| | - Hisashi Hashimoto
- Bioscience and Biotechnology Center, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi, Japan
| | - Chloé Bertin
- INRA, UR1037 Fish Physiology and Genomics, F-35000, Rennes, France
| | - Brigitte Mourot
- INRA, UR1037 Fish Physiology and Genomics, F-35000, Rennes, France
| | - Cornelia Schmidt
- Physiological Chemistry, Biocenter, University of Würzburg, 97074, Würzburg, Germany
| | - Dagmar Wilhelm
- Department of Anatomy & Neuroscience, University of Melbourne, Parkville, Victoria, 3010, Australia
| | - Lazaro Centanin
- Centre for Organismal Studies (COS), University of Heidelberg, Heidelberg, Germany
| | - Yann Guiguen
- INRA, UR1037 Fish Physiology and Genomics, F-35000, Rennes, France
| | - Amaury Herpin
- Physiological Chemistry, Biocenter, University of Würzburg, 97074, Würzburg, Germany. .,INRA, UR1037 Fish Physiology and Genomics, F-35000, Rennes, France.
| |
Collapse
|
8
|
Expression and cellular localization of double sex and mab-3 related transcription factor 1 in testes of postnatal Small-Tail Han sheep at different developmental stages. Gene 2017; 642:467-473. [PMID: 29174386 DOI: 10.1016/j.gene.2017.11.053] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2017] [Revised: 10/12/2017] [Accepted: 11/17/2017] [Indexed: 11/20/2022]
Abstract
Double sex and mab-3 related transcription factor 1 (Dmrt1), an evolutionarily conserved gene, is a sex-related gene expressed in male gonads, that is involved in the regulation of sex differentiation, testicular development and reproductive function maintenance. Until now, functional studies on the Dmrt1 gene in sheep (Ovis aries) have been lacking. In this study, testis, heart, liver, spleen, lung, kidney and longissimus dorsi muscle tissues were collected from Small-Tail Han sheep at 0, 2, 5, 12 and 24months after birth (mab). Dmrt1 expression and cellular localization were detected in various testicular tissues by quantitative real time PCR (qRT-PCR), western blot and immunohistochemistry methods. The morphological structures of testicular tissues at different developmental stages were observed by hematoxylin & eosin (HE) staining. The Dmrt1 mRNA expression levels in 12 and 24 mab sheep were significantly higher than those in 0 and 2 mab sheep (P<0.05), and Dmrt1 protein expression showed a similar trend. The qRT-PCR results in various tissues at 12 mab showed that Dmrt1 mRNA was predominantly expressed in testes. Immunohistochemical staining in testes at different developmental stages showed that Dmrt1 protein immunoreactive responses were mainly localized in Sertoli cells and gonocytes at 0, 2 and 5 mab, while they were localized in spermatocytes, sperm cells and some spermatogonia and Sertoli cells at 12 and 24 mab. We speculate that the Dmrt1 gene plays a vital role in postnatal sheep spermatogenesis, perhaps by regulating the maturation and functional maintenance of Sertoli cells, the proliferation and differentiation of gonocytes in prepubertal sheep testes, and the mitosis and meiosis of germ cells in adult sheep, but the specific mechanisms underlying these phenomena must be further studied and verified. ABBREVIATIONS
Collapse
|
9
|
Sex Change in Clownfish: Molecular Insights from Transcriptome Analysis. Sci Rep 2016; 6:35461. [PMID: 27748421 PMCID: PMC5066260 DOI: 10.1038/srep35461] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Accepted: 09/30/2016] [Indexed: 12/12/2022] Open
Abstract
Sequential hermaphroditism is a unique reproductive strategy among teleosts that is displayed mainly in fish species living in the coral reef environment. The reproductive biology of hermaphrodites has long been intriguing; however, very little is known about the molecular pathways underlying their sex change. Here, we provide the first de novo transcriptome analyses of a hermaphrodite teleost´s undergoing sex change in its natural environment. Our study has examined relative gene expression across multiple groups-rather than just two contrasting conditions- and has allowed us to explore the differential expression patterns throughout the whole process. Our analysis has highlighted the rapid and complex genomic response of the brain associated with sex change, which is subsequently transmitted to the gonads, identifying a large number of candidate genes, some well-known and some novel, involved in the process. The present study provides strong evidence of the importance of the sex steroidogenic machinery during sex change in clownfish, with the aromatase gene playing a central role, both in the brain and the gonad. This work constitutes the first genome-wide study in a social sex-changing species and provides insights into the genetic mechanism governing social sex change and gonadal restructuring in protandrous hermaphrodites.
Collapse
|
10
|
Leng XQ, Du HJ, Li CJ, Cao H. Molecular characterization and expression pattern of dmrt1 in the immature Chinese sturgeon Acipenser sinensis. JOURNAL OF FISH BIOLOGY 2016; 88:567-579. [PMID: 26706998 DOI: 10.1111/jfb.12852] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2015] [Accepted: 10/25/2015] [Indexed: 06/05/2023]
Abstract
In this study, the cDNA of dmrt1 gene from the Chinese sturgeon Acipenser sinensis was isolated and its expression pattern was characterized in different tissues of immature A. sinensis. By real-time quantitative PCR (qrtPCR) analysis, the A. sinensis dmrt1 mRNA was detected mainly in gonad and with a higher level in the testis than the ovary, especially in 3 and 4 year-old samples. This indicated that the dmrt1 expression exhibited gradual testis specificity with development. The subcellular localization analysis indicated that the Dmrt1 protein exists only in germ cells and not in somatic cells. These results suggest that A. sinensis dmrt1 might be a highly specific sex differentiation gene for testis development and spermatogenesis.
Collapse
Affiliation(s)
- X Q Leng
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
- Hubei Key Laboratory of Three Gorges Project for Conservation of Fishes, Chinese Sturgeon Research Institute, China Three Gorges Corporation, Yichang 443100, China
- Key Laboratory of Freshwater Biodiversity Conservation and Utilization of Agriculture Ministry of China, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China
| | - H J Du
- Hubei Key Laboratory of Three Gorges Project for Conservation of Fishes, Chinese Sturgeon Research Institute, China Three Gorges Corporation, Yichang 443100, China
| | - C J Li
- Key Laboratory of Freshwater Biodiversity Conservation and Utilization of Agriculture Ministry of China, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China
| | - H Cao
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
- Hubei Key Laboratory of Three Gorges Project for Conservation of Fishes, Chinese Sturgeon Research Institute, China Three Gorges Corporation, Yichang 443100, China
| |
Collapse
|
11
|
Qu XC, Jiang JY, Cheng C, Feng L, Liu QG. Cloning and transcriptional expression of a novel gene during sex inversion of the rice field eel (Monopterus albus). SPRINGERPLUS 2015; 4:745. [PMID: 26693104 PMCID: PMC4666882 DOI: 10.1186/s40064-015-1544-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Accepted: 11/18/2015] [Indexed: 01/08/2023]
Abstract
We performed annealing control primer (ACP)-based differential-display reverse transcription-polymerase chain reaction (DDRT-PCR) to isolate differentially expressed genes (DEGs) from the stage IV ovary and ovotestis of the rice field eel, Monopterus albus. Using 20
arbitrary ACP primers, 14 DEG expressed-sequence tags were identified and sequenced. The transcriptional expression of one DEG, G2, was significantly greater in the ovotestis than the stage IV ovary. To understand the role of G2 in sex inversion, G2 cDNA was cloned and semi-RT-PCR, real time PCR were performed during gonad development. The full-length G2 cDNA was 650 base pairs (bp) and it comprised a 5′-untranslated region (UTR) of 82 bp, a 3′-UTR of 121 bp and an open reading frame of 444 bp that encoded a 148-amino acid protein. The expression of G2 was weak during early ovarian development
until the stage IV ovary, but expression increased significantly with gonad development. We speculate that G2 may play an important function during sex inversion and testis development in the rice field eel, but the full details of the function of this gene requires further research.
Collapse
Affiliation(s)
- X C Qu
- College of Fisheries and Life Sciences, Shanghai Ocean University, Shanghai, 201306 China
| | - J Y Jiang
- College of Life Sciences, Guangxi Normal University, Guilin, 541004 China.,Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, Ministry of Education, Guangxi Normal University, Guilin, 541004 China
| | - C Cheng
- College of Fisheries and Life Sciences, Shanghai Ocean University, Shanghai, 201306 China
| | - L Feng
- College of Fisheries and Life Sciences, Shanghai Ocean University, Shanghai, 201306 China
| | - Q G Liu
- College of Fisheries and Life Sciences, Shanghai Ocean University, Shanghai, 201306 China
| |
Collapse
|
12
|
Nozu R, Horiguchi R, Kobayashi Y, Nakamura M. Expression profile of doublesex/male abnormal-3-related transcription factor-1 during gonadal sex change in the protogynous wrasse, Halichoeres trimaculatus. Mol Reprod Dev 2015. [DOI: 10.1002/mrd.22527] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ryo Nozu
- Research Center; Okinawa Churashima Foundation; Motobu Okinawa Japan
- Tropical Biosphere Research Center; University of the Ryukyus; Motobu Okinawa Japan
| | - Ryo Horiguchi
- Tropical Biosphere Research Center; University of the Ryukyus; Motobu Okinawa Japan
- Research Equipment Center; Hamamatsu University School of Medicine; Hamamatsu Shizuoka Japan
| | - Yasuhisa Kobayashi
- Tropical Biosphere Research Center; University of the Ryukyus; Motobu Okinawa Japan
- Faculty of Science; Ushimado Marine Institute; Okayama University; Setouchi Okayama Japan
| | - Masaru Nakamura
- Research Center; Okinawa Churashima Foundation; Motobu Okinawa Japan
- Tropical Biosphere Research Center; University of the Ryukyus; Motobu Okinawa Japan
- Research Institute; Meio University; Nago Okinawa Japan
| |
Collapse
|
13
|
Adolfi MC, Carreira ACO, Jesus LWO, Bogerd J, Funes RM, Schartl M, Sogayar MC, Borella MI. Molecular cloning and expression analysis of dmrt1 and sox9 during gonad development and male reproductive cycle in the lambari fish, Astyanax altiparanae. Reprod Biol Endocrinol 2015; 13:2. [PMID: 25577427 PMCID: PMC4298075 DOI: 10.1186/1477-7827-13-2] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Accepted: 01/05/2015] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND The dmrt1 and sox9 genes have a well conserved function related to testis formation in vertebrates, and the group of fish presents a great diversity of species and reproductive mechanisms. The lambari fish (Astyanax altiparanae) is an important Neotropical species, where studies on molecular level of sex determination and gonad maturation are scarce. METHODS Here, we employed molecular cloning techniques to analyze the cDNA sequences of the dmrt1 and sox9 genes, and describe the expression pattern of those genes during development and the male reproductive cycle by qRT-PCR, and related to histology of the gonad. RESULTS Phylogenetic analyses of predicted amino acid sequences of dmrt1 and sox9 clustered A. altiparanae in the Ostariophysi group, which is consistent with the morphological phylogeny of this species. Studies of the gonad development revealed that ovary formation occurred at 58 days after hatching (dah), 2 weeks earlier than testis formation. Expression studies of sox9 and dmrt1 in different tissues of adult males and females and during development revealed specific expression in the testis, indicating that both genes also have a male-specific role in the adult. During the period of gonad sex differentiation, dmrt1 seems to have a more significant role than sox9. During the male reproductive cycle dmrt1 and sox9 are down-regulated after spermiation, indicating a role of these genes in spermatogenesis. CONCLUSIONS For the first time the dmrt1 and sox9 were cloned in a Characiformes species. We show that both genes have a conserved structure and expression, evidencing their role in sex determination, sex differentiation and the male reproductive cycle in A. altiparanae. These findings contribute to a better understanding of the molecular mechanisms of sex determination and differentiation in fish.
Collapse
Affiliation(s)
- Mateus C Adolfi
- Department of Cell and Developmental Biology, Institute of Biomedical Science, University de São Paulo, São Paulo, SP Brazil
- Department of Physiological Chemistry I, University of Würzburg, Am Hubland, Würzburg, Germany
| | - Ana CO Carreira
- Chemistry Institute, Biochemistry Department, Cell and Molecular Therapy Center (NUCEL-NETCEM), School of Medicine, University of São Paulo, São Paulo, SP Brazil
| | - Lázaro WO Jesus
- Department of Cell and Developmental Biology, Institute of Biomedical Science, University de São Paulo, São Paulo, SP Brazil
| | - Jan Bogerd
- Department of Biology, Faculty of Science, Utrecht University, Utrecht, The Netherlands
| | - Rejane M Funes
- Department of Cell and Developmental Biology, Institute of Biomedical Science, University de São Paulo, São Paulo, SP Brazil
| | - Manfred Schartl
- Department of Physiological Chemistry I, University of Würzburg, Am Hubland, Würzburg, Germany
| | - Mari C Sogayar
- Chemistry Institute, Biochemistry Department, Cell and Molecular Therapy Center (NUCEL-NETCEM), School of Medicine, University of São Paulo, São Paulo, SP Brazil
| | - Maria I Borella
- Department of Cell and Developmental Biology, Institute of Biomedical Science, University de São Paulo, São Paulo, SP Brazil
| |
Collapse
|
14
|
Zheng Y, Liang H, Xu P, Li M, Wang Z. Molecular cloning of Pcc-dmrt1s and their specific expression patterns in Pengze crucian carp (Carassius auratus var. Pengze) affected by 17α-methyltestosterone. FISH PHYSIOLOGY AND BIOCHEMISTRY 2014; 40:1141-1155. [PMID: 24445816 DOI: 10.1007/s10695-014-9911-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2013] [Accepted: 01/15/2014] [Indexed: 06/03/2023]
Abstract
Dmrt1, an important transcription factor associated with testicular differentiation, is conserved among teleost, which could also be detected in ovaries. In the present study, three isoforms of Pcc-dmrt1s (Pcc-dmrt1a, Pcc-dmrt1b and Pcc-dmrt1c) resulting from alternative splicing of the dmrt1 gene were cloned and characterized in the triploid gynogenetic fish, the Pengze crucian carp. Their mRNA expression profiling was investigated in juvenile developmental stages, tissues of the adult fish, and the juveniles under 84.2 ng/L 17α-methyltestosterone (MT) treatments. Results showed that their putative proteins shared high identities to Dmrt1 in cyprinid fish species. Gene expression profiling in the developmental stages showed that all the three target genes had a highest/lowest expression at 56/40 days post-hatching (dph), respectively. The period of 40 dph appeared to be a key time during the process of the ovary development of Pengze crucian carp. The tissue distribution results indicated that Pcc-dmrt1s were predominantly expressed in hepatopancreas, brain, spleen and ovary of the female fish. MT significantly increased the mRNA expression of Pcc-dmrt1a (all 4-week exposures) and Pcc-dmrt1b (except for week 2), while repressed Pcc-dmrt1c transcripts at all exposure period except for week 2. MT extremely significant repressed cyp19a1a transcripts for 1 week. The present study indicated that MT could influence the ovary development of Pengze crucian carp by disturbing gene expressions of Pcc-dmrt1s and cyp19a1a. Furthermore, the present study will be of great significance to broaden the understanding of masculinizing pathway during ovary development in gynogenetic teleost.
Collapse
Affiliation(s)
- Yao Zheng
- Shaanxi Key Laboratory of Molecular Biology for Agriculture, College of Animal Science and Technology, Northwest A&F University, 22 Xinong Road, Yangling, 712100, Shaanxi, China
| | | | | | | | | |
Collapse
|
15
|
Ma L, Wang W, Yang X, Jiang J, Song H, Jiang H, Zhang Q, Qi J. Characterization of the Dmrt1 gene in the black rockfish Sebastes schlegeli revealed a remarkable sex-dimorphic expression. FISH PHYSIOLOGY AND BIOCHEMISTRY 2014; 40:1263-1274. [PMID: 24566822 DOI: 10.1007/s10695-014-9921-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Accepted: 02/10/2014] [Indexed: 06/03/2023]
Abstract
The Dmrt genes encode a large family of transcription factors with a conserved zinc finger-like DNA-binding DM domain. The function of Dmrt1, one of the family members, in sexual development has been well studied in invertebrates and vertebrates. In the present study, the full-length cDNA of Dmrt1 was isolated from the testis of Sebastes schlegeli. The full-length cDNA of S. schlegeli Dmrt1 (SsDmrt1) was 1,587 bp and contained a 189-bp 5' UTR, a 489-bp 3' UTR and a 909-bp open reading frame, which encoded 302 amino acids with a conserved DM domain and an male-specific motif domain. Phylogenetic analysis showed the evolutionary relationships of SsDmrt1 with other known Dmrt genes in fish and tetrapods. Several transcriptional factor-binding sites in the 5' promoter were identified that might regulate SsDmrt1 expression. Quantitative real-time PCR analysis indicated that SsDmrt1 was expressed in all of the inspected larval developmental stages from 1 to 35 days after birth and that the level of expression gradually decreased. The expression of SsDmrt1 in adult gonads was sexually dimorphic with extremely high expression in the testis, but very low expression in the ovary. No expression was detected in other tissues. Using in situ hybridization, we demonstrated that SsDmrt1 was specifically expressed in the germ cells of both the testis and the ovary. Thus, our results suggest that SsDmrt1 may have an important role in the differentiation of both the testis and the ovary of S. schlegeli.
Collapse
Affiliation(s)
- Liman Ma
- Key Laboratory of Marine Genetics and Breeding, Ministry of Education, College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, People's Republic of China
| | | | | | | | | | | | | | | |
Collapse
|
16
|
Arezo MJ, Papa N, Guttierrez V, García G, Berois N. Sex determination in annual fishes: Searching for the master sex-determining gene in Austrolebias charrua (Cyprinodontiformes, Rivulidae). Genet Mol Biol 2014; 37:364-74. [PMID: 25071401 PMCID: PMC4094610 DOI: 10.1590/s1415-47572014005000009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2013] [Accepted: 01/09/2014] [Indexed: 11/22/2022] Open
Abstract
Evolution of sex determination and differentiation in fishes involves a broad range of sex strategies (hermaphroditism, gonochorism, unisexuality, environmental and genetic sex determination). Annual fishes inhabit temporary ponds that dry out during the dry season when adults die. The embryos exhibit an atypical developmental pattern and remain buried in the bottom mud until the next rainy season. To elucidate genomic factors involved in the sex determination in annual fish, we explored the presence of a candidate sex-specific gene related to the cascade network in Austrolebias charrua. All phylogenetic analyses showed a high posterior probability of occurrence for a clade integrated by nuclear sequences (aprox. 900 bp) from both adults (male and female), with partial cDNA fragments of A. charrua from juveniles (male) and the dsx D. melanogaster gene. The expressed fragment was detected from blastula to adulthood stages showing a sexually dimorphic expression pattern. The isolated cDNA sequence is clearly related to dsx D. melanogaster gene and might be located near the top of the sex determination cascade in this species.
Collapse
Affiliation(s)
- María José Arezo
- Sección Biología Celular,
Facultad de Ciencias, Universidad de la República,
Montevideo,
Uruguay
| | - Nicolás Papa
- Sección Biología Celular,
Facultad de Ciencias, Universidad de la República,
Montevideo,
Uruguay
| | - Verónica Guttierrez
- Sección Genética Evolutiva,
Facultad de Ciencias,
Universidad de la República,
Montevideo,
Uruguay
| | - Graciela García
- Sección Genética Evolutiva,
Facultad de Ciencias,
Universidad de la República,
Montevideo,
Uruguay
| | - Nibia Berois
- Sección Biología Celular,
Facultad de Ciencias, Universidad de la República,
Montevideo,
Uruguay
| |
Collapse
|
17
|
Ubeda-Manzanaro M, Merlo MA, Ortiz-Delgado JB, Rebordinos L, Sarasquete C. Expression profiling of the sex-related gene Dmrt1 in adults of the Lusitanian toadfish Halobatrachus didactylus (Bloch and Schneider, 1801). Gene 2013; 535:255-65. [PMID: 24275345 DOI: 10.1016/j.gene.2013.11.021] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2013] [Revised: 11/06/2013] [Accepted: 11/12/2013] [Indexed: 01/22/2023]
Abstract
Doublesex and mab-3 related transcription factor 1 (Dmrt1) gene is a widely conserved gene involved in sex determination and differentiation across phyla. To gain insights on Dmrt1 implication for fish gonad cell differentiation and gametogenesis development, its mRNA was isolated from testis and ovary from the Lusitanian toadfish (Halobatrachus didactylus). The cDNA from Dmrt1 was synthesized and cloned, whereas its quantitative and qualitative gene expression, as well as its protein immunolocalization, were analyzed. A main product of 1.38 kb, which encodes a protein of 295 aa, was reported, but other minority Dmrt1 products were also identified by RACE-PCR. This gene is predominantly expressed in testis (about 20 times more than in other organs or tissues), specially in spermatogonia, spermatocytes and spermatids, as well as in somatic Sertoli cells, indicating that Dmrt1 plays an important role in spermatogenesis. Although Dmrt1 transcripts also seem to be involved in oogenesis development, and it cannot be excluded that toadfish Dmrt1 could be functionally involved in other processes not related to sex.
Collapse
Affiliation(s)
- María Ubeda-Manzanaro
- Institute of Marine Sciences of Andalusia (ICMAN.CSIC), University Campus, 11519 Puerto Real, Cadiz, Spain.
| | - Manuel A Merlo
- Laboratory of Genetics, Faculty of Marine and Environmental Sciences, University of Cadiz, Campus Río San Pedro, 11510, Puerto Real, Cadiz, Spain.
| | - Juan B Ortiz-Delgado
- Institute of Marine Sciences of Andalusia (ICMAN.CSIC), University Campus, 11519 Puerto Real, Cadiz, Spain.
| | - Laureana Rebordinos
- Laboratory of Genetics, Faculty of Marine and Environmental Sciences, University of Cadiz, Campus Río San Pedro, 11510, Puerto Real, Cadiz, Spain.
| | - Carmen Sarasquete
- Institute of Marine Sciences of Andalusia (ICMAN.CSIC), University Campus, 11519 Puerto Real, Cadiz, Spain.
| |
Collapse
|
18
|
|
19
|
Molecular basis and genetic improvement of economically important traits in aquaculture animals. ACTA ACUST UNITED AC 2012. [DOI: 10.1007/s11434-012-5213-0] [Citation(s) in RCA: 122] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
20
|
Herpin A, Schartl M. Dmrt1 genes at the crossroads: a widespread and central class of sexual development factors in fish. FEBS J 2011; 278:1010-9. [PMID: 21281449 DOI: 10.1111/j.1742-4658.2011.08030.x] [Citation(s) in RCA: 115] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A plethora of corroborative genetic studies led to the view that, across the animal kingdom, the gene-regulatory cascades triggering sexual development bear little resemblance to each other. As a result, the common emerging picture is that the genes at the top of the cascade are not conserved, whereas the downstream genes have homologues in a much broader spectrum of species. Among these downstream effectors, a gene family involved in sex differentiation in organisms as phylogenetically divergent as corals, Caenorhabditis elegans, Drosophila, frogs, fish, birds and mammals is the dmrt gene family. Despite the attention that Dmrt1 factors have received, to date it has not been elucidated how Dmrt1s mediate their activities and putative downstream targets have yet to be characterized. However, a remarkable amount of descriptive expression data has been gathered in a large variety of fish, particularly with respect to early gonadal differentiation and sex change. This minireview aims at distilling the current knowledge of fish dmrt1s, in terms of expression and regulation. It is shown how gonadal identities correlate with dimorphic dmrt1 expression in gonochoristic and hermaphroditic fish species. It is also described how sex steroid hormones affect gonadal identity and dmrt1 expression. Emphasis is also given to recent findings dealing with transcriptional, post-transcriptional, post-translational and functional regulations of the dmrt1a/dmrt1bY gene pair in medaka.
Collapse
Affiliation(s)
- Amaury Herpin
- Physiological ChemistryI, University of Wuerzburg, Wuerzburg, Germany.
| | | |
Collapse
|