|
1
|
Wang Q, Deng J, Jiang Y, Wang Z, Xia B, Chen T. A medaka gonad-specific lncRNA may act as pri-miR-202 to regulate testicular endocrine homeostasis and spermatogenesis. Theriogenology 2024; 214:273-285. [PMID: 37948817 DOI: 10.1016/j.theriogenology.2023.10.020] [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: 05/09/2023] [Revised: 10/09/2023] [Accepted: 10/15/2023] [Indexed: 11/12/2023]
Abstract
A large number of long non-coding RNAs (lncRNAs) are expressed in animal gonads, but their functions are poorly understood. In this study, a gonad-specific lncRNA, termed lnc4, was identified and characterized in the model fish medaka (Oryzias latipes). The expression pattern and in vitro functional analyses indicated that lnc4 was likely to be a primary transcript of miR-202 (pri-miR-202). Results of single-molecule fluorescence in situ hybridization demonstrated that the precursor miR-202 (pre-miR-202) was highly expressed in the nuclei of testicular somatic cells, including Leydig and Sertoli cells, whereas only a small amount of lnc4 molecules could be detected co-expressed with pre-miR-202 in Sertoli cells due to its low expression level. Deletion of the lnc4 locus led to a significant reduction in testis size and a dramatic decrease in the number of male germ cells, as well as a reduction in sperm viability. Moreover, lnc4 knockout resulted in enhanced synthesis and secretion of testicular somatic cells and accelerated differentiation of immature male germ cells. Taken together, functional studies of lnc4 and its mature transcript miR-202 will contribute to the understanding of the important role of non-coding RNAs in animal or human reproductive disorders.
Collapse
Affiliation(s)
- Qian Wang
- College of Animal Science and Technology, Yangtze University, Jingzhou, Hubei, 434024, China; College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Jiajie Deng
- State Key Laboratory of Freshwater Ecology and Biotechnology, Hubei Hongshan Laboratory, Institute of Hydrobiology, Innovation Academy for Seed Design (INASEED), Chinese Academy of Sciences, Wuhan, Hubei, 430072, China
| | - Yuewen Jiang
- College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Zhi Wang
- College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Bilin Xia
- College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Tiansheng Chen
- Fisheries College of Jimei University, Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture and Rural Affairs, Engineering Research Center of the Modern Technology for Eel Industry, Ministry of Education, Xiamen, Fujian, 361021, China; College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China.
| |
Collapse
|
|
2
|
Yoon J, Gu WB, Konuma M, Kobayashi M, Yokoi H, Osada M, Nagasawa K. Gene delivery available in molluscan cells by strong promoter discovered from bivalve-infectious virus. Proc Natl Acad Sci U S A 2022; 119:e2209910119. [PMID: 36322729 PMCID: PMC9661190 DOI: 10.1073/pnas.2209910119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/04/2023] Open
Abstract
Understanding gene functions in marine invertebrates has been limited, largely due to the lack of suitable assay systems. Such a system requires investigative methods that are reproducible and can be quantitatively evaluated, such as a cell line, and a strong promoter that can drive high expression of a transgene. In this study, we established primary cell culture from a marine bivalve mollusc, Mizuhopecten yessoensis. Using scallop primary cells, we optimized electroporation conditions for transfection and carried out a luciferase-based promoter activity assay to identify strong promoter sequences that can drive expression of a gene of interest. We evaluated potential promoter sequences from genes of endogenous and exogenous origin and discovered a strong viral promoter derived from a bivalve-infectious virus, ostreid herpesvirus-1 (OsHV-1). This promoter, we termed OsHV-1 promoter, showed 24.7-fold and 16.1-fold higher activity than the cytomegalovirus immediate early (CMV IE) promoter and the endogenous EF1α promoter, the two most commonly used promoters in bivalves so far. Our GFP assays showed that the OsHV-1 promoter is active not only in scallop cells but also in HEK293 cells and zebrafish embryos. The OsHV-1 promoter practically enables functional analysis of marine molluscan genes, which can contribute to unveiling gene-regulatory networks underlying astonishing regeneration, adaptation, reproduction, and aging in marine invertebrates.
Collapse
Affiliation(s)
- Jeongwoong Yoon
- Laboratory of Aquaculture Biology, Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi 980-8572, Japan
| | - Wen-Bin Gu
- Laboratory of Aquaculture Biology, Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi 980-8572, Japan
| | - Mizuki Konuma
- Laboratory of Aquaculture Biology, Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi 980-8572, Japan
| | - Mutsuko Kobayashi
- Laboratory of Aquaculture Biology, Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi 980-8572, Japan
| | - Hayato Yokoi
- Laboratory of Fish Genetics, Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi 980-8572, Japan
| | - Makoto Osada
- Laboratory of Aquaculture Biology, Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi 980-8572, Japan
| | - Kazue Nagasawa
- Laboratory of Aquaculture Biology, Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi 980-8572, Japan
- To whom correspondence may be addressed.
| |
Collapse
|
|
3
|
Mu C, Vakharia VN, Zhou Y, Jiang N, Liu W, Meng Y, Li Y, Xue M, Zhang J, Zeng L, Zhong Q, Fan Y. A Novel Subunit Vaccine Based on Outer Capsid Proteins of Grass Carp Reovirus (GCRV) Provides Protective Immunity against GCRV Infection in Rare Minnow ( Gobiocypris rarus). Pathogens 2020; 9:pathogens9110945. [PMID: 33202780 PMCID: PMC7697209 DOI: 10.3390/pathogens9110945] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Revised: 11/11/2020] [Accepted: 11/11/2020] [Indexed: 12/29/2022] Open
Abstract
The grass carp hemorrhagic disease, caused by the grass carp reovirus (GCRV), has resulted in severe economic losses in the aquaculture industry in China. VP4 and VP35 are outer capsid proteins of GCRV and can induce an immune response in the host. Here, three recombinant baculoviruses, AcMNPV-VP35, AcMNPV-VP4, and AcMNPV-VP35-VP4, were generated to express recombinant VP4 and VP35 proteins from GCRV type II in insect cells by using the Bac-to-Bac baculovirus expression system to create a novel subunit vaccine. The expression of recombinant VP35, VP4, and VP35-VP4 proteins in Sf-9 cells were confirmed by Western blotting and immunofluorescence. Recombinant VP35, VP4, and VP35-VP4 were purified from baculovirus-infected cell lysates and injected intraperitoneally (3 μg/fish) into the model rare minnow, Gobiocypris rarus. After 21 days, the immunized fish were challenged with virulent GCRV. Liver, spleen, and kidney samples were collected at different time intervals to evaluate the protective efficacy of the subunit vaccines. The mRNA expression levels of some immune-related genes detected by using quantitative real-time PCR (qRT-PCR) were significantly upregulated in the liver, spleen, and kidney, with higher expression levels in the VP35-VP4 group. The nonvaccinated fish group showed 100% mortality, whereas the VP35-VP4, VP4, and VP35 groups exhibited 67%, 60%, and 33% survival, respectively. In conclusion, our results revealed that recombinant VP35 and VP4 can induce immunity and protect against GCRV infection, with their combined use providing the best effect. Therefore, VP35 and VP4 proteins can be used as a novel subunit vaccine against GCRV infection.
Collapse
Affiliation(s)
- Changyong Mu
- Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China; (C.M.); (Y.Z.); (N.J.); (W.L.); (Y.M.); (Y.L.); (M.X.); (J.Z.); (L.Z.)
- College of Biological Science and Engineering, Jiangxi Agricultural University, Nanchang 330045, China
| | - Vikram N. Vakharia
- Institute of Marine and Environmental Technology, University of Maryland Baltimore Country, Baltimore, MD 21202, USA;
| | - Yong Zhou
- Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China; (C.M.); (Y.Z.); (N.J.); (W.L.); (Y.M.); (Y.L.); (M.X.); (J.Z.); (L.Z.)
| | - Nan Jiang
- Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China; (C.M.); (Y.Z.); (N.J.); (W.L.); (Y.M.); (Y.L.); (M.X.); (J.Z.); (L.Z.)
| | - Wenzhi Liu
- Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China; (C.M.); (Y.Z.); (N.J.); (W.L.); (Y.M.); (Y.L.); (M.X.); (J.Z.); (L.Z.)
| | - Yan Meng
- Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China; (C.M.); (Y.Z.); (N.J.); (W.L.); (Y.M.); (Y.L.); (M.X.); (J.Z.); (L.Z.)
| | - Yiqun Li
- Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China; (C.M.); (Y.Z.); (N.J.); (W.L.); (Y.M.); (Y.L.); (M.X.); (J.Z.); (L.Z.)
| | - Mingyang Xue
- Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China; (C.M.); (Y.Z.); (N.J.); (W.L.); (Y.M.); (Y.L.); (M.X.); (J.Z.); (L.Z.)
| | - Jieming Zhang
- Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China; (C.M.); (Y.Z.); (N.J.); (W.L.); (Y.M.); (Y.L.); (M.X.); (J.Z.); (L.Z.)
| | - Lingbing Zeng
- Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China; (C.M.); (Y.Z.); (N.J.); (W.L.); (Y.M.); (Y.L.); (M.X.); (J.Z.); (L.Z.)
| | - Qiwang Zhong
- College of Biological Science and Engineering, Jiangxi Agricultural University, Nanchang 330045, China
- Correspondence: (Q.Z.); (Y.F.)
| | - Yuding Fan
- Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China; (C.M.); (Y.Z.); (N.J.); (W.L.); (Y.M.); (Y.L.); (M.X.); (J.Z.); (L.Z.)
- College of Biological Science and Engineering, Jiangxi Agricultural University, Nanchang 330045, China
- Institute of Marine and Environmental Technology, University of Maryland Baltimore Country, Baltimore, MD 21202, USA;
- Correspondence: (Q.Z.); (Y.F.)
| |
Collapse
|
|
4
|
Wang Y, Xue T, Wang Q, Xia B, Pan Q, Chen T. Virus susceptibility of a new cell line derived from the fin of black carp Mylopharyngodon piceus. JOURNAL OF FISH BIOLOGY 2020; 96:418-426. [PMID: 31755106 DOI: 10.1111/jfb.14215] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Accepted: 11/21/2019] [Indexed: 06/10/2023]
Abstract
A continuous cell line MPF derived from the fin of black carp Mylopharyngodon piceus was established and characterised in this study. Mylopharyngodon piceus fin (MPF) cells were subcultured for more than 80 passages with high viability recovery after long-term storage. The karyotyping analysis revealed that MPF had a modal diploid chromosome number (2n = 48) and identical ribosomal RNA sequence with black carp. In addition, the expression of pluripotency-associated markers including nanog, oct4 and vasa, were detected in MPF. The transient transfection efficiency of MPF reached 23% with a fluorescent reporter by modified electroporation and stable expression of red fluorescent MPF was established by the baculovirus system, indicating that MPF is an ideal platform for studying gene functions in vitro. Lastly, cytopathic effects were also observed and RNA transcripts of a viral gene increased after infection by spring viremia of carp virus (SVCV), suggesting that MPF could be an alternative tool for investigating pathogen-host interactions in black carp. In conclusion, a fin cell line that is susceptible to SVCV was established as a potential adult stem-cell line, providing a suitable tool for future genetic analyses and pathogen-host studies in black carp.
Collapse
Affiliation(s)
- Yizhou Wang
- College of Fisheries, Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, China
| | - Ting Xue
- College of Fisheries, Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, China
- Marine Science and Engineering College, Qingdao Agricultural University, Qingdao, China
| | - Qian Wang
- College of Fisheries, Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, China
| | - Bilin Xia
- College of Fisheries, Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, China
| | - Qihua Pan
- College of Fisheries, Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, China
| | - Tiansheng Chen
- College of Fisheries, Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, China
- Collaborative Innovation Center for Efficient and Health Production of Fisheries in Hunan Province, Changde, China
| |
Collapse
|
|
5
|
Cao Z, Liu S, Nan H, Zhao K, Xu X, Wang G, Ji H, Chen H. Immersion immunization with recombinant baculoviruses displaying cyprinid herpesvirus 2 membrane proteins induced protective immunity in gibel carp. FISH & SHELLFISH IMMUNOLOGY 2019; 93:879-887. [PMID: 31421239 DOI: 10.1016/j.fsi.2019.08.036] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 07/28/2019] [Accepted: 08/14/2019] [Indexed: 06/10/2023]
Abstract
Cyprinid herpesvirus 2 (CyHV-2) is the causative pathogen of herpesviral haematopoietic necrosis disease, which has caused huge economic losses to aquaculture industry in China. In this study, nine truncated CyHV-2 membrane glycoproteins (ORF25, ORF25C, ORF25D, ORF30, ORF124, ORF131, ORF136, ORF142A, ORF146) and a GFP reporter protein were respectively expressed using baculovirus surface displaying system. Western blot showed that the proteins were successfully packaged in the recombinant virus particles. In baculovirus transduced gibel carp kidney cells, the target proteins were expressed and displayed on the fish cell surface. Healthy gibel carp were immunized by immersion with the recombinant baculoviruses and the fish treated with phosphate-buffered saline (PBS) were served as mock group. The expression of interleukin-11 (IL-11), interferon α (IFNα) and a complement component gene C3 were significantly up-regulated in most experimental groups, and interferon γ (IFNγ) expression in some groups were also induced after immunization. Subsequently, the immunized gibel carp were challenged by intraperitoneal injection of CyHV-2 virus. All the immunized groups exhibited reduced mortality after CyHV-2 challenge. In the groups immunized with baculoviruses displaying and expressing ORF25, ORF25C and ORF146, the relative percentage survival values reached 83.3%, 87.5% and 70.8%, respectively. Our data suggested that baculovirus-displayed ORF25, ORF25C and ORF146 could be potential vaccine candidates for the prevention of CyHV-2 infection in gibel carp.
Collapse
Affiliation(s)
- Zhiwei Cao
- College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Sijia Liu
- College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Hao Nan
- College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Kaixia Zhao
- College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Xiaodong Xu
- College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Gaoxue Wang
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Hong Ji
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Hongying Chen
- College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China.
| |
Collapse
|