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Li R, Qu J, Huang D, He Y, Niu J, Qi J. Expression Analysis of ZPB2a and Its Regulatory Role in Sperm-Binding in Viviparous Teleost Black Rockfish. Int J Mol Sci 2022; 23:ijms23169498. [PMID: 36012756 PMCID: PMC9409380 DOI: 10.3390/ijms23169498] [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] [Received: 07/27/2022] [Revised: 08/17/2022] [Accepted: 08/18/2022] [Indexed: 11/16/2022] Open
Abstract
Black rockfish is a viviparous teleost whose sperm could be stored in the female ovary for five months. We previously proposed that zona pellucida (ZP) proteins of black rockfish play a similar sperm-binding role as in mammals. In this study, SsZPB2a and SsZPB2c were identified as the most similar genes with human ZPA, ZPB1 and ZPB2 by Blastp method. Immunohistochemistry showed that ovary-specific SsZPB2a was initially expressed in the cytoplasm of oocytes at stage III. Then it gradually transferred to the region close to the cell membrane and zona pellucida of oocytes at stage IV. The most obvious protein signal was observed at the zona pellucida region of oocytes at stage V. Furthermore, we found that the recombinant prokaryotic proteins rSsZPB2a and rSsZPB2c could bind with the posterior end of sperm head and rSsZPB2a was able to facilitate the sperm survival in vitro. After knocking down Sszpb2a in ovarian tissues cultivated in vitro, the expressions of sperm-specific genes were down-regulated (p < 0.05). These results illustrated the regulatory role of ZP protein to the sperm in viviparous teleost for the first time, which could advance our understanding about the biological function of ZP proteins in the teleost.
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Affiliation(s)
- Rui Li
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, China
| | - Jiangbo Qu
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, China
| | - Dan Huang
- Key Laboratory of Tropical Aquatic Germplasm of Hainan Province, Sanya Oceanographic Institution, Ocean University of China, Sanya 572000, China
| | - Yan He
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, China
- Key Laboratory of Tropical Aquatic Germplasm of Hainan Province, Sanya Oceanographic Institution, Ocean University of China, Sanya 572000, China
| | - Jingjing Niu
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, China
- Correspondence: (J.N.); (J.Q.)
| | - Jie Qi
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, China
- Key Laboratory of Tropical Aquatic Germplasm of Hainan Province, Sanya Oceanographic Institution, Ocean University of China, Sanya 572000, China
- Correspondence: (J.N.); (J.Q.)
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2
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Zhang H, Zhang B, Kawaguchi M, Lin Q. Effects of hatching enzymes on egg envelope digestion in the male-brooding seahorse. Mol Reprod Dev 2021; 88:459-470. [PMID: 33960059 DOI: 10.1002/mrd.23474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 04/08/2021] [Accepted: 04/26/2021] [Indexed: 11/11/2022]
Abstract
In the present study, we aimed to evaluate the effects of hatching enzymes on the egg envelope digestion during the hatching period in the male brooding seahorse. The complementary DNAs encoding two hatching-enzyme genes, high choriolytic enzyme (HCE) and low choriolytic enzyme (LCE), were cloned and functionally characterized from the lined seahorse (Hippocampus erectus). The genomic-synteny analysis confirmed that teleosts shared LCE gene synteny. In contrast, the genomic location of HCE was found to be conserved with pipefish, but not other teleosts, suggesting that translocation into a novel genomic location occurred. Whole-mount in situ hybridization showed that HCE and LCE mRNAs were expressed in hatching gland cells. To determine the digestion mechanisms of HCE and LCE in hatching, recombinant HCE and LCE were generated and their enzyme activities were examined using fertilized egg envelopes and synthetic peptides. Seahorse HCE and LCE independently digested and softened the egg envelopes of the lined seahorse. Although the egg envelope was digested more following HCE and LCE co-treatment, envelope solubilization was not observed. Indeed, both HCE and LCE showed similar substrate specificities toward four different synthetic peptides designed from the cleavage sites of egg envelope proteins. HCE and LCE proteins from other euteleostean fishes showed different specificities, and the egg envelope was solubilized by the cooperative action of HCE and LCE. These results suggest that the function of LCE was degenerated in the lined seahorse. Our results imply a digestion mechanism for evolutionary adaptation in ovoviviparous fish with male pregnancy.
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Affiliation(s)
- Huixian Zhang
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology (LMB), South China Sea Institute of Oceanology, Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou, China.,Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Bo Zhang
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology (LMB), South China Sea Institute of Oceanology, Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou, China.,Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou, China
| | - Mari Kawaguchi
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, Tokyo, Japan
| | - Qiang Lin
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology (LMB), South China Sea Institute of Oceanology, Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou, China.,Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou, China.,University of Chinese Academy of Sciences, Beijing, China
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3
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He Y, Chang Y, Bao L, Yu M, Li R, Niu J, Fan G, Song W, Seim I, Qin Y, Li X, Liu J, Kong X, Peng M, Sun M, Wang M, Qu J, Wang X, Liu X, Wu X, Zhao X, Wang X, Zhang Y, Guo J, Liu Y, Liu K, Wang Y, Zhang H, Liu L, Wang M, Yu H, Wang X, Cheng J, Wang Z, Xu X, Wang J, Yang H, Lee SMY, Liu X, Zhang Q, Qi J. A chromosome-level genome of black rockfish, Sebastes schlegelii, provides insights into the evolution of live birth. Mol Ecol Resour 2019; 19:1309-1321. [PMID: 31077549 DOI: 10.1111/1755-0998.13034] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 04/29/2019] [Accepted: 05/06/2019] [Indexed: 12/26/2022]
Abstract
The black rockfish (Sebastes schlegelii) is a teleost in which eggs are fertilized internally and retained in the maternal reproductive system, where they undergo development until live birth (viviparity). In the present study, we report a chromosome-level black rockfish genome assembly. High-throughput transcriptome analysis (RNA-seq and ATAC-seq) coupled with in situ hybridization (ISH) and immunofluorescence reveal several candidate genes for maternal preparation, sperm storage and release, and hatching. We propose that zona pellucida (ZP) proteins retain sperm at the oocyte envelope, while genes in two distinct astacin metalloproteinase subfamilies serve to release sperm from the ZP and free the embryo from chorion at prehatching stage. We present a model of black rockfish reproduction, and propose that the rockfish ovarian wall has a similar function to the uterus of mammals. Together, these genomic data reveal unprecedented insights into the evolution of an unusual teleost life history strategy, and provide a sound foundation for studying viviparity in nonmammalian vertebrates and an invaluable resource for rockfish ecological and evolutionary research.
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Affiliation(s)
- Yan He
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao, China.,Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Yue Chang
- BGI-Shenzhen, Shenzhen, China.,BGI-Qingdao, BGI-Shenzhen, Qingdao, China
| | - Lisui Bao
- The University of Chicago, Chicago, Illinois
| | - Mengjun Yu
- BGI-Qingdao, BGI-Shenzhen, Qingdao, China.,China National GeneBank, BGI-Shenzhen, Shenzhen, China
| | - Rui Li
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao, China
| | - Jingjing Niu
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao, China
| | - Guangyi Fan
- BGI-Qingdao, BGI-Shenzhen, Qingdao, China.,China National GeneBank, BGI-Shenzhen, Shenzhen, China.,State Key Laboratory of Quality Research in Chinese Medicine and Institute of Chinese Medical Sciences, Macao, China
| | - Weihao Song
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao, China
| | - Inge Seim
- Integrative Biology Laboratory, College of Life Sciences, Nanjing Normal University, Nanjing, China.,Comparative and Endocrine Biology Laboratory, Translational Research Institute-Institute of Health and Biomedical Innovation, School of Biomedical Sciences, Queensland University of Technology, Brisbane, Australia
| | - Yating Qin
- BGI-Qingdao, BGI-Shenzhen, Qingdao, China.,China National GeneBank, BGI-Shenzhen, Shenzhen, China
| | - Xuemei Li
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao, China
| | - Jinxiang Liu
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao, China
| | - Xiangfu Kong
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao, China
| | - Meiting Peng
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao, China
| | - Minmin Sun
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao, China
| | - Mengya Wang
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao, China
| | - Jiangbo Qu
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao, China
| | - Xuangang Wang
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao, China
| | - Xiaobing Liu
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao, China
| | - Xiaolong Wu
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao, China
| | - Xi Zhao
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao, China
| | - Xuliang Wang
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao, China
| | - Yaolei Zhang
- BGI-Qingdao, BGI-Shenzhen, Qingdao, China.,China National GeneBank, BGI-Shenzhen, Shenzhen, China
| | - Jiao Guo
- BGI-Qingdao, BGI-Shenzhen, Qingdao, China.,China National GeneBank, BGI-Shenzhen, Shenzhen, China
| | - Yang Liu
- BGI-Qingdao, BGI-Shenzhen, Qingdao, China.,China National GeneBank, BGI-Shenzhen, Shenzhen, China
| | - Kaiqiang Liu
- BGI-Qingdao, BGI-Shenzhen, Qingdao, China.,China National GeneBank, BGI-Shenzhen, Shenzhen, China
| | - Yilin Wang
- BGI-Qingdao, BGI-Shenzhen, Qingdao, China.,China National GeneBank, BGI-Shenzhen, Shenzhen, China
| | - He Zhang
- BGI-Qingdao, BGI-Shenzhen, Qingdao, China.,Department of Biology, Hong Kong Baptist University, Hong Kong, China
| | - Longqi Liu
- BGI-Shenzhen, Shenzhen, China.,China National GeneBank, BGI-Shenzhen, Shenzhen, China
| | - Mingyue Wang
- BGI-Shenzhen, Shenzhen, China.,China National GeneBank, BGI-Shenzhen, Shenzhen, China
| | - Haiyang Yu
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao, China
| | - Xubo Wang
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao, China
| | - Jie Cheng
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao, China
| | - Zhigang Wang
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao, China
| | - Xun Xu
- BGI-Shenzhen, Shenzhen, China.,China National GeneBank, BGI-Shenzhen, Shenzhen, China
| | - Jian Wang
- BGI-Shenzhen, Shenzhen, China.,China National GeneBank, BGI-Shenzhen, Shenzhen, China
| | - Huanming Yang
- BGI-Shenzhen, Shenzhen, China.,China National GeneBank, BGI-Shenzhen, Shenzhen, China
| | - Simon Ming-Yuen Lee
- State Key Laboratory of Quality Research in Chinese Medicine and Institute of Chinese Medical Sciences, Macao, China
| | - Xin Liu
- BGI-Qingdao, BGI-Shenzhen, Qingdao, China.,China National GeneBank, BGI-Shenzhen, Shenzhen, China.,BGI-Fuyang, BGI-Shenzhen, Fuyang, China
| | - Quanqi Zhang
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao, China.,Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Jie Qi
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao, China
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Nagasawa T, Kawaguchi M, Yano T, Isoyama S, Yasumasu S, Okabe M. Translocation of promoter-conserved hatching enzyme genes with intron-loss provides a new insight in the role of retrocopy during teleostean evolution. Sci Rep 2019; 9:2448. [PMID: 30792427 PMCID: PMC6385490 DOI: 10.1038/s41598-019-38693-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Accepted: 12/17/2018] [Indexed: 11/12/2022] Open
Abstract
The hatcing enzyme gene (HE) encodes a protease that is indispensable for the hatching process and is conserved during vertebrate evolution. During teleostean evolution, it is known that HE experienced a drastic transfiguration of gene structure, namely, losing all of its introns. However, these facts are contradiction with each other, since intron-less genes typically lose their original promoter because of duplication via mature mRNA, called retrocopy. Here, using a comparative genomic assay, we showed that HEs have changed their genomic location several times, with the evolutionary timings of these translocations being identical to those of intron-loss. We further showed that HEs maintain the promoter sequence upstream of them after translocation. Therefore, teleostean HEs are unique genes which have changed intra- (exon-intron) and extra-genomic structure (genomic loci) several times, although their indispensability for the reproductive process of hatching implies that HE genes are translocated by retrocopy with their promoter sequence.
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Affiliation(s)
- Tatsuki Nagasawa
- Department of Anatomy, The Jikei University School of Medicine, 3-25-8 Nishishimbashi, Minato-ku, Tokyo, 105-8461, Japan.,Research Fellow of the Japan Society for the Promotion of Science (JSPS), Tokyo, 102-0083, Japan.,Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo, 102-8554, Japan
| | - Mari Kawaguchi
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo, 102-8554, Japan
| | - Tohru Yano
- Department of Anatomy, The Jikei University School of Medicine, 3-25-8 Nishishimbashi, Minato-ku, Tokyo, 105-8461, Japan
| | - Sho Isoyama
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo, 102-8554, Japan
| | - Shigeki Yasumasu
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo, 102-8554, Japan.
| | - Masataka Okabe
- Department of Anatomy, The Jikei University School of Medicine, 3-25-8 Nishishimbashi, Minato-ku, Tokyo, 105-8461, Japan
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6
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Cohen KL, Piacentino ML, Warkentin KM. The hatching process and mechanisms of adaptive hatching acceleration in hourglass treefrogs, Dendropsophus ebraccatus. Comp Biochem Physiol A Mol Integr Physiol 2017; 217:63-74. [PMID: 29056480 DOI: 10.1016/j.cbpa.2017.10.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 10/16/2017] [Accepted: 10/17/2017] [Indexed: 01/25/2023]
Abstract
Environmentally cued hatching is well documented in anurans, enabling embryos to escape diverse threats. However, knowledge of anuran hatching mechanisms is limited and based largely on aquatic-breeding species without known plasticity in hatching timing. Generally, hatching gland cells produce a hatching enzyme that degrades the vitelline membrane. We investigated hatching and its regulation in terrestrial embryos of hourglass treefrogs, Dendropsophus ebraccatus, which accelerate hatching to escape dehydration. We specifically tested if changes in hatching gland cell development or hatching enzyme gene expression are associated with accelerated hatching. We measured perivitelline chamber size of well-hydrated eggs over development as an indicator of breakdown of the vitelline membrane and found that the size of the perivitelline chamber increased steadily until hatching, suggesting gradual hatching enzyme release and vitelline membrane degradation. Hatching gland cells peaked in abundance and began regression substantially prior to hatching, but we found no developmental differences in the abundance or surface area of hatching gland cells between dry and well-hydrated embryos. Hatching enzyme gene expression also peaked early in development then declined, with no difference between hydration treatments. In D. ebraccatus breakdown of the vitelline membrane appears gradual, mediated by hatching enzyme release starting long before hatching. However, hatching acceleration is not associated with ontogenetic changes in hatching gland cell development or hatching enzyme gene expression. This hatching process contrasts with that of red-eyed treefrogs, Agalychnis callidryas, which appear to release enzyme acutely at hatching, yet both species are capable of hatching to escape acute threats.
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Affiliation(s)
- Kristina L Cohen
- Department of Biology, Boston University, 5 Cummington Mall, Boston, MA, 02215, USA.
| | - Michael L Piacentino
- Department of Biology, Boston University, 5 Cummington Mall, Boston, MA, 02215, USA; Program in Molecular Biology, Cell Biology and Biochemistry, Boston University, 5 Cummington Mall, Boston, MA, 02215, USA
| | - Karen M Warkentin
- Department of Biology, Boston University, 5 Cummington Mall, Boston, MA, 02215, USA; Smithsonian Tropical Research Institute, Apartado Postal 0843-03092, Panamá, República de Panamá
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