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Kiyozumi D. Distinct actions of testicular endocrine and lumicrine signaling on the proximal epididymal transcriptome. Reprod Biol Endocrinol 2024; 22:40. [PMID: 38600586 PMCID: PMC11005294 DOI: 10.1186/s12958-024-01213-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Accepted: 03/27/2024] [Indexed: 04/12/2024] Open
Abstract
The epididymal function and gene expression in mammals are under the control of the testis. Sex steroids are secreted from the testis and act on the epididymis in an endocrine manner. There is another, non-sex steroidal secreted signaling, named lumicrine signaling, in which testis-derived secreted proteins go through the male reproductive tract and act on the epididymis. The effects of such multiple regulations on the epididymis by the testis have been investigated for many genes. The recent development of high-throughput next-generation sequencing now enables us a further comparative survey of endocrine and lumicrine action-dependent gene expression. In the present study, testis-derived endocrine and lumicrine actions on epididymal gene expression were comparatively investigated by RNA-seq transcriptomic analyses. This investigation utilized experimental animal models in which testis-derived endocrine and/or lumicrine actions were interfered with, such as unilateral or bilateral orchidectomy. By bilateral orchidectomy, which interferes with both endocrine and lumicrine actions, 431 genes were downregulated. By unilateral orchidectomy, which also interferes with endocrine and lumicrine actions by the unilateral testis, but the endocrine action was compensated by the contralateral testis, 283 genes were downregulated. The content of such genes downregulated by unilateral orchidectomy was like those of lumicrine action-interfered efferent duct-ligation, W/Wv, and Nell2-/- mice. When genes affected by unilateral and bilateral orchidectomy were compared, 154 genes were commonly downregulated, whereas 217 genes were specifically downregulated only by bilateral orchidectomy, indicating the distinction between endocrine and lumicrine actions on the proximal epididymal transcriptome. Comparative transcriptome analyses also showed that the expressions of genes emerging since Amniota were notably impacted by bilateral orchidectomy, unilateral orchidectomy, and lumicrine action-interfering treatments; the degree of influence from these treatments varied based on the evolutionary stage beyond Amniota. These findings unveil an evolutional transition of regulated gene expression in the proximal epididymis by two different testis-derived signaling mechanisms.
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Affiliation(s)
- Daiji Kiyozumi
- Japan Science and Technology Agency, 7, Gobancho, Chiyoda-ku, Tokyo, 102-0076, Japan.
- Research Institute of Environmental Medicine, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8601, Japan.
- Research Institute for Microbial Diseases, Osaka University, 3-2, Yamadaoka, Suita, Osaka, 565-0871, Japan.
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Kiyozumi D. Busulfan administration replicated the characteristics of the epididymal initial segment observed in mice lacking testis-epididymis lumicrine signaling. J Reprod Dev 2024; 70:104-114. [PMID: 38346723 PMCID: PMC11017096 DOI: 10.1262/jrd.2023-102] [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: 12/14/2023] [Accepted: 01/16/2024] [Indexed: 04/05/2024] Open
Abstract
The physiological functions of the mammalian epididymis are typically regulated by the testes. In addition to sex steroids secreted by testicular Leydig cells, which act on the epididymis in an endocrine manner, there is a non-sex-steroidal signaling pathway known as the lumicrine pathway. This lumicrine signaling pathway involves ligand proteins secreted from germ cells within the testicular seminiferous tubules traversing the male reproductive tract, which induce epithelial differentiation in the epididymis. These findings prompted an inquiry into whether treatments influencing testis physiology can disrupt epididymal function by interfering with testis-epididymis communication. Busulfan, an alkylating agent commonly used to deplete testicular germ cells in reproductive biology, has not been sufficiently explored because of its effects on the epididymis. This study investigated the effects of busulfan administration on the proximal epididymis using histological and transcriptomic analyses. Notably, busulfan, as opposed to the vehicle dimethyl sulfoxide (DMSO), altered the morphology of the initial segment of the epididymis, leading to a reduction in the cell height of the luminal epithelium. RNA sequencing identified 185 significantly downregulated genes in the proximal epididymis of busulfan-administered mice compared to DMSO-administered mice. Comparative transcriptome analyses revealed similarities between the epididymal transcriptome of busulfan-administered mice and lumicrine-deficient mice, such as efferent-duct-ligated W/Wv and Nell2-/- mice. However, this differed from that of bilaterally orchidectomized mice, in which both the endocrine and lumicrine signaling pathways were simultaneously ablated. Collectively, these results suggested that the harmful effects of busulfan on the proximal epididymis are secondary consequences of the ablation of testis-epididymis lumicrine signaling.
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Affiliation(s)
- Daiji Kiyozumi
- Japan Science and Technology Agency, Tokyo 102-0076, Japan
- Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan
- Research Institute of Environmental Medicine, Nagoya University, Nagoya 464-8601, Japan
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Tian L, Yu Y, Mao Z, Xu D, Zhang H, Qiao M, Chen T, Liu W. Genes and Pathways Underpinning Klinefelter Syndrome at Bulk and Single-Cell Levels. Biochem Genet 2024:10.1007/s10528-024-10689-6. [PMID: 38374521 DOI: 10.1007/s10528-024-10689-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 01/05/2024] [Indexed: 02/21/2024]
Abstract
Klinefelter syndrome (KS) is the most frequent genetic anomaly in infertile men. Given its unclear mechanism, we aim to investigate critical genes and pathways in the pathogenesis of KS based on three bulk and one single-cell transcriptome data sets from Gene Expression Omnibus. We merged two data sets (GSE42331 and GSE47584) with human KS whole blood samples. When comparing the control and KS samples, five hub genes, including defensin alpha 4 (DEFA4), bactericidal permeability increasing protein (BPI), myeloperoxidase (MPO), intelectin 1 (ITLN1), and Xg Glycoprotein (XG), were identified. Besides, infiltrated degree of certain immune cells such as CD56bright NK cell were positively associated with the expression of ITLN1 and XG. Kyoto Encyclopedia of Genes and Genomes analysis identified upregulated phosphatidylinositol 3-kinase (PI3K)/AKT pathway in KS. Gene set enrichment analysis followed by gene set variation analysis confirmed the upregulation of G2M checkpoint and heme metabolism in KS. Thereafter, the GSE200680 data set was used for external validation of the expression variation of hub genes from healthy to KS testicular samples, and each hub gene yielded excellent discriminatory capability for KS without exception. At the single-cell level, the GSE136353 data set was utilized to evaluate intercellular communication between different cell types in KS patient, and strong correlations were detected between macrophages/ dendritic cells/ NK cells and the other cell types. Collectively, we provided hub genes, pathways, immune cell infiltration degree, and cell-cell communication in KS, warranting novel insights into the pathogenesis of this disease.
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Affiliation(s)
- Linlin Tian
- Nanjing Municipal Center for Disease Control and Prevention, Nanjing, 210003, Jiangsu, People's Republic of China
| | - Yan Yu
- Nanjing Municipal Center for Disease Control and Prevention, Nanjing, 210003, Jiangsu, People's Republic of China
| | - Ziqing Mao
- Nanjing Municipal Center for Disease Control and Prevention, Nanjing, 210003, Jiangsu, People's Republic of China
| | - Dandan Xu
- Nanjing Municipal Center for Disease Control and Prevention, Nanjing, 210003, Jiangsu, People's Republic of China
| | - Hongbo Zhang
- Nanjing Municipal Center for Disease Control and Prevention, Nanjing, 210003, Jiangsu, People's Republic of China
| | - Mengkai Qiao
- Nanjing Municipal Center for Disease Control and Prevention, Nanjing, 210003, Jiangsu, People's Republic of China
| | - Tong Chen
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, People's Republic of China.
| | - Wen Liu
- Center for Reproductive Medicine, Cheeloo College of Medicine, Shandong University, Jinan, 250001, Shandong, China.
- Key Laboratory of Reproductive Endocrinology of Ministry of Education, National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong Key Laboratory of Reproductive Medicine, Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, China.
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Diaz-Lundahl S, Sundaram AYM, Gillund P, Gilfillan GD, Olsaker I, Krogenæs A. Gene Expression in Embryos From Norwegian Red Bulls With High or Low Non Return Rate: An RNA-Seq Study of in vivo-Produced Single Embryos. Front Genet 2022; 12:780113. [PMID: 35096004 PMCID: PMC8795813 DOI: 10.3389/fgene.2021.780113] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Accepted: 12/13/2021] [Indexed: 11/24/2022] Open
Abstract
During the last decade, paternal effects on embryo development have been found to have greater importance than previously believed. In domestic cattle, embryo mortality is an issue of concern, causing huge economical losses for the dairy cattle industry. In attempts to reveal the paternal influence on embryo death, recent approaches have used transcriptome profiling of the embryo to find genes and pathways affected by different phenotypes in the bull. For practical and economic reasons, most such studies have used in vitro produced embryos. The aim of the present study was to investigate the differences in the global transcriptome of in vivo produced embryos, derived from sires with either high or low field fertility measured as the non-return rate (NRR) on day 56 after first AI of the inseminated cows. Superovulated heifers (n = 14) in the age span of 12–15 months were artificially inseminated with semen from either high fertility (n = 6) or low fertility (n = 6) bulls. On day seven after insemination, embryos were retrieved through uterine flushing. Embryos with first grade quality and IETS stage 5 (early blastocyst), 6 (blastocyst) or 7 (expanded blastocyst) were selected for further processing. In total, RNA extracted from 24 embryos was sequenced using Illumina sequencing, followed by differential expression analysis and gene set enrichment analysis. We found 62 genes differentially expressed between the two groups (adj.p-value<0.05), of which several genes and their linked pathways could explain the different developmental capacity. Transcripts highly expressed in the embryos from low fertility bulls were related to sterol metabolism and terpenoid backbone synthesis, while transcripts highly expressed in the high fertility embryos were linked to anti-apoptosis and the regulation of cytokine signaling. The leukocyte transendothelial migration and insulin signaling pathways were associated with enrichments in both groups. We also found some highly expressed transcripts in both groups which can be considered as new candidates in the regulation of embryo development. The present study is an important step in defining the paternal influence in embryonic development. Our results suggest that the sire’s genetic contribution affects several important processes linked to pre-and peri implantation regulation in the developing embryo.
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Affiliation(s)
- Sofia Diaz-Lundahl
- Department of Production Animal Clinical Sciences, Faculty of Veterinary Medicine, Norwegian University of Life Sciences, Ås, Norway
| | - Arvind Y M Sundaram
- Department of Medical Genetics, Oslo University Hospital and University of Oslo, Oslo, Norway
| | - Per Gillund
- Geno Breeding and AI Association, Hamar, Norway
| | - Gregor Duncan Gilfillan
- Department of Medical Genetics, Oslo University Hospital and University of Oslo, Oslo, Norway
| | - Ingrid Olsaker
- Department of Preclinical Sciences and Pathology, Faculty of Veterinary Medicine, Norwegian University of Life Sciences, Ås, Norway
| | - Anette Krogenæs
- Department of Production Animal Clinical Sciences, Faculty of Veterinary Medicine, Norwegian University of Life Sciences, Ås, Norway
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Zhou S, Jiang G, Zhu Y, Liu L, Liu D, Diao J, Liu H, Xiu Y. Molecular identification and function analysis of bactericidal permeability-increasing protein/LPS-binding protein 1 (BPI/LBP1) from turbot (Scophthalmus maximus). FISH & SHELLFISH IMMUNOLOGY 2019; 87:499-506. [PMID: 30731212 DOI: 10.1016/j.fsi.2019.02.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Revised: 01/14/2019] [Accepted: 02/02/2019] [Indexed: 06/09/2023]
Abstract
Bactericidal permeability-increasing protein (BPI) and lipopolysaccharide-binding protein (LBP) play important roles in host antimicrobial defense. In the present study, we identified one isoform of BPI/LBP gene from turbot (Scophthalmus maximus), designated as SmBPI/LBP1. The full-length cDNA sequence of SmBPI/LBP1 was 1826 bp, which encoding one secreted protein with 480 amino acid residues. Structurally, the SmBPI/LBP1 showed high similarity to its homologs from other vertebrates or invertebrates, which all contained a signal peptide, a BPI/LBP/CETP N-terminal with a LPS-binding domain, and a BPI/LBP/CETP C-terminal domain. The deduced amino acid sequences of SmBPI/LBP1 shared significant similarity to BPI/LBP of Seriola lalandi dorsalis (71%) and Paralichthys olivaceus (69%). Phylogentic analysis further supported that SmBPI/LBP1 act as a new member of vertebrate BPI/LBP family. SmBPI/LBP1 was ubiquitously expressed in all tested tissues, with the highest expression level in spleen tissue. The mRNA expression of SmBPI/LBP1 in spleen and kidney were significantly up-regulated after Vibrio vulnificus challenge. Finally, the recombinant SmBPI/LBP1 showed high affinity to lipopolysaccharide, followed by peptidoglycan and lipoteichoic acid, which is the ubiquitous component of Gram-negative or Gram-positive bacteria. These results indicated that SmBPI/LBP1 probably played important roles in immune response against bacteria infection.
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Affiliation(s)
- Shun Zhou
- Marine Science and Engineering College, Qingdao Agricultural University, Qingdao, 266109, China
| | - Guangpeng Jiang
- Marine Science and Engineering College, Qingdao Agricultural University, Qingdao, 266109, China
| | - Ying Zhu
- Key Lab of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, 266071, PR China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237, PR China
| | - Lanhao Liu
- Marine Science and Engineering College, Qingdao Agricultural University, Qingdao, 266109, China
| | - Danyang Liu
- Marine Science and Engineering College, Qingdao Agricultural University, Qingdao, 266109, China
| | - Jing Diao
- Shandong Key Laboratory of Disease Control in Mariculture, Marine Biology Institute of Shandong Province, 266104, Qingdao, PR China
| | - Hongjun Liu
- Shandong Key Laboratory of Disease Control in Mariculture, Marine Biology Institute of Shandong Province, 266104, Qingdao, PR China
| | - Yunji Xiu
- Marine Science and Engineering College, Qingdao Agricultural University, Qingdao, 266109, China; Shandong Key Laboratory of Disease Control in Mariculture, Marine Biology Institute of Shandong Province, 266104, Qingdao, PR China.
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Dutra GA, Ishak GM, Pechanova O, Pechan T, Peterson DG, Jacob JCF, Willard ST, Ryan PL, Gastal EL, Feugang JM. Seasonal variation in equine follicular fluid proteome. Reprod Biol Endocrinol 2019; 17:29. [PMID: 30841911 PMCID: PMC6404268 DOI: 10.1186/s12958-019-0473-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Accepted: 02/26/2019] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Proteomic studies of follicular fluid (FF) exist for several species, including the horse; however, the seasonal influence on FF proteome has not been explored in livestock. The application of high-throughput proteomics of FF in horse has the potential to identify seasonal variations of proteins involved in follicle and oocyte growth. METHODS This study (i) profiles the proteomes of equine FF collected from dominant growing follicles during the spring anovulatory season (SAN), and spring (SOV), summer (SUM), and fall (FOV) ovulatory seasons; and (ii) identifies season-dependent regulatory networks and associated key proteins. RESULTS Regardless of season, a total of 90 proteins were identified in FF, corresponding to 63, 72, 69, and 78 proteins detected in the SAN, SOV, SUM, and FOV seasons, respectively. Fifty-two proteins were common to all seasons, a total of 13 were unique to either season, and 25 were shared between two seasons or more. Protein-to-protein interaction (PPI) analysis indicated the likely critical roles of plasminogen in the SAN season, the prothrombin/plasminogen combination in SUM, and plasminogen/complement C3 in both SOV and FOV seasons. The apolipoprotein A1 appeared crucial in all seasons. The present findings show that FF proteome of SUM differs from other seasons, with FF having high fluidity (low viscosity). CONCLUSIONS The balance between the FF contents in prothrombin, plasminogen, and coagulation factor XII proteins favoring FF fluidity may be crucial at the peak of the ovulatory season (SUM) and may explain the reported lower incidence of hemorrhagic anovulatory follicles during the SUM season.
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Affiliation(s)
- G A Dutra
- Department of Animal Science, Food and Nutrition, Southern Illinois University, Carbondale, IL, USA
- Department of Reproduction and Animal Evaluation, Federal Rural University of Rio de Janeiro, Seropédica, Brazil
| | - G M Ishak
- Department of Animal Science, Food and Nutrition, Southern Illinois University, Carbondale, IL, USA
- Department of Surgery and Obstetrics, College of Veterinary Medicine, University of Baghdad, Baghdad, Iraq
| | - O Pechanova
- Institute for Genomics, Biocomputing and Bioinformatics, University, Mississippi State, Oxford, MS, USA
| | - T Pechan
- Institute for Genomics, Biocomputing and Bioinformatics, University, Mississippi State, Oxford, MS, USA
| | - D G Peterson
- Institute for Genomics, Biocomputing and Bioinformatics, University, Mississippi State, Oxford, MS, USA
| | - J C F Jacob
- Department of Reproduction and Animal Evaluation, Federal Rural University of Rio de Janeiro, Seropédica, Brazil
| | - S T Willard
- Department of Animal and Dairy Sciences, Mississippi State University, Mississippi State, 4025 Wise Center, PO Box 9815, Mississippi State, MS, 39762, USA
| | - P L Ryan
- Department of Animal and Dairy Sciences, Mississippi State University, Mississippi State, 4025 Wise Center, PO Box 9815, Mississippi State, MS, 39762, USA
| | - E L Gastal
- Department of Animal Science, Food and Nutrition, Southern Illinois University, Carbondale, IL, USA
| | - J M Feugang
- Department of Animal and Dairy Sciences, Mississippi State University, Mississippi State, 4025 Wise Center, PO Box 9815, Mississippi State, MS, 39762, USA.
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Abstract
Male infertility has become a very serious problem in the human reproduction system, but the molecular mechanism of infertility remains largely unknown.
Fertilization is the phenomenon in which a sperm and oocyte find each other, interact, and fuse. Sperm-oocyte fusion-related factors on the sperm side play
crucial roles in male infertility. For example, IZUMO1 is well-known as a sperm protein essential for fusion of a sperm and oocyte, but its dysfunction or
mutation can result in male infertility. Recent studies showed a novel sperm protein named Bactericidal/permeability-increasing protein (BPI), which takes part
in the sperm-oocyte fusion process. The complexity and expected redundancy of the factors involved makes the process intricate, with a still poorly understood
mechanism, which is difficult to comprehend in full detail. This review summarizes the known molecules involved in the process of sperm-oocyte fusion, mainly
focusing on the relevant factors on the sperm side, whose dysregulation may potentially be associated with male infertility. New insights may come from these
molecules in this review, can facilitate the development of new treatments of male infertility, and may have a diagnostic value in infertility.
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Affiliation(s)
- Lisha Mou
- Shenzhen Xenotransplantation Medical Engineering Research and Development Center, Institute of Translational Medicine, Shenzhen Second People's Hospital, First Affiliated Hospital of Shenzhen University, Shenzhen, China
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Tang L, Liang Y, Jiang Y, Liu S, Zhang F, He X, Wang T, Zhou Y, Zhong H, Yan J. Identification and expression analysis on bactericidal permeability-increasing protein/lipopolysaccharide-binding protein of blunt snout bream, Megalobrama amblycephala. FISH & SHELLFISH IMMUNOLOGY 2015; 45:630-640. [PMID: 25982396 DOI: 10.1016/j.fsi.2015.05.013] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Revised: 05/03/2015] [Accepted: 05/05/2015] [Indexed: 06/04/2023]
Abstract
Bactericidal permeability-increasing protein (BPI) and lipopolysaccharide-binding protein (LBP) belong to the lipid transfer protein/lipopolysaccharide-binding protein family and play a critical role in the innate immune response to Gram-negative bacteria. In the present study, a novel BPI/LBP from blunt snout bream, Megalobrama amblycephala (maBPI/LBP) was isolated by RACE techniques. The open reading frame (ORF) of maBPI/LBP gene encoded a polypeptide of 474 amino acids with a putative 18-aa hydrophobic signal peptide. Structurally, the maBPI/LBP showed highly similar to those of BPI/LBPs from invertebrate and teleost, LBPs and BPIs from mammal, which contained an N-terminal BPI/LBP/CETP domain BPI1 with a LPS-binding domain, a C-terminal BPI/LBP/CETP domain BPI2, and proline-rich domain. The homologous identities of deduced amino acid sequences displayed that the maBPI/LBP possessed significant similarity (96.61% and 90.07%) with those of grass carp and common carp, respectively. The recombinant protein of maBPI/LBP showed effectively kill Gram-negative bacteria. The maBPI/LBP gene was expressed in a wide range of normal tested tissues, with the highest expression levels in the kidney. The experiments revealed that the mRNA expression of maBPI/LBP in spleen considerably up-regulated from 2 h to 8 h post LPS stimulation, and peaked rapidly at 2 h (7.40-fold, P < 0.05), which confirmed that maBPI/LBP was the absolute sensitive to LPS stimulation. Furthermore, the level of maBPI/LBP mRNA expression reached the maximum for a second time at 24 h after LPS stimulation. These results suggested that maBPI/LBP was a constitutive and inducible acute-phase protein contributing to the host immune defense against pathogenic bacterial infection in M. amblycephala. This study will further our understanding of the function of BPI/LBP and the molecular mechanism of innate immunity in teleost.
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Affiliation(s)
- Leilei Tang
- State Key Laboratory of Medical Genetics & School of Life Sciences, Central South University, Changsha 410017, PR China
| | - Yinhua Liang
- Department of Operation, Xiangya Hospital, Central South University, Changsha 410008, PR China
| | - Yuhong Jiang
- State Key Laboratory of Medical Genetics & School of Life Sciences, Central South University, Changsha 410017, PR China
| | - Shaojun Liu
- Key Laboratory of Protein Chemistry and Developmental Biology of the State Education Ministry of China, College of Life Sciences, Hunan Normal University, Changsha 410018, PR China
| | - Fuyun Zhang
- State Key Laboratory of Medical Genetics & School of Life Sciences, Central South University, Changsha 410017, PR China
| | - Xia He
- State Key Laboratory of Medical Genetics & School of Life Sciences, Central South University, Changsha 410017, PR China
| | - Tianyi Wang
- State Key Laboratory of Medical Genetics & School of Life Sciences, Central South University, Changsha 410017, PR China
| | - Yi Zhou
- Guangxi Key Laboratory of Aquatic Genetic Breeding and Healthy Aquaculture, Guangxi Academy of Fishery Sciences, Nanning, Guangxi 530021, PR China
| | - Huan Zhong
- Guangxi Key Laboratory of Aquatic Genetic Breeding and Healthy Aquaculture, Guangxi Academy of Fishery Sciences, Nanning, Guangxi 530021, PR China
| | - Jinpeng Yan
- State Key Laboratory of Medical Genetics & School of Life Sciences, Central South University, Changsha 410017, PR China.
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Reid AT, Anderson AL, Roman SD, McLaughlin EA, McCluskey A, Robinson PJ, Aitken RJ, Nixon B. Glycogen synthase kinase 3 regulates acrosomal exocytosis in mouse spermatozoa via dynamin phosphorylation. FASEB J 2015; 29:2872-82. [PMID: 25808536 DOI: 10.1096/fj.14-265553] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Accepted: 03/09/2015] [Indexed: 11/11/2022]
Abstract
The dynamin family of GTPases has been implicated as novel regulators of the acrosome reaction, a unique exocytotic event that is essential for fertilization. Dynamin activity during the acrosome reaction is accompanied by phosphorylation of key serine residues. We now tested the hypothesis that glycogen synthase kinase 3 (GSK3) is the protein kinase responsible for dynamin phosphorylation at these phosphosites in mouse spermatozoa. Pharmacologic inhibition of GSK3 in mature mouse spermatozoa (CHIR99021: IC50 = 6.7 nM) led to a significant reduction in dynamin phosphorylation (10.3% vs. 27.3%; P < 0.001), acrosomal exocytosis (9.7% vs. 25.7%; P < 0.01), and in vitro fertilization (53% vs. 100%; P < 0.01). GSK3 was shown to be present in developing germ cells where it colocalized with dynamin in the peri-acrosomal domain. However, additional GSK3 was acquired by maturing mouse spermatozoa within the male reproductive tract, via a novel mechanism involving direct interaction of sperm heads with extracellular structures known as epididymal dense bodies. These data reveal a novel mode for the cellular acquisition of a protein kinase and identify a key role for GSK3 in the regulation of sperm maturation and acrosomal exocytosis.
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Affiliation(s)
- Andrew T Reid
- *School of Environmental and Life Sciences, Discipline of Biological Sciences, and School of Environmental and Life Sciences, Discipline of Chemistry, The University of Newcastle, Callaghan, New South Wales, Australia; and Children's Medical Research Institute, The University of Sydney, Westmead, New South Wales, Australia
| | - Amanda L Anderson
- *School of Environmental and Life Sciences, Discipline of Biological Sciences, and School of Environmental and Life Sciences, Discipline of Chemistry, The University of Newcastle, Callaghan, New South Wales, Australia; and Children's Medical Research Institute, The University of Sydney, Westmead, New South Wales, Australia
| | - Shaun D Roman
- *School of Environmental and Life Sciences, Discipline of Biological Sciences, and School of Environmental and Life Sciences, Discipline of Chemistry, The University of Newcastle, Callaghan, New South Wales, Australia; and Children's Medical Research Institute, The University of Sydney, Westmead, New South Wales, Australia
| | - Eileen A McLaughlin
- *School of Environmental and Life Sciences, Discipline of Biological Sciences, and School of Environmental and Life Sciences, Discipline of Chemistry, The University of Newcastle, Callaghan, New South Wales, Australia; and Children's Medical Research Institute, The University of Sydney, Westmead, New South Wales, Australia
| | - Adam McCluskey
- *School of Environmental and Life Sciences, Discipline of Biological Sciences, and School of Environmental and Life Sciences, Discipline of Chemistry, The University of Newcastle, Callaghan, New South Wales, Australia; and Children's Medical Research Institute, The University of Sydney, Westmead, New South Wales, Australia
| | - Phillip J Robinson
- *School of Environmental and Life Sciences, Discipline of Biological Sciences, and School of Environmental and Life Sciences, Discipline of Chemistry, The University of Newcastle, Callaghan, New South Wales, Australia; and Children's Medical Research Institute, The University of Sydney, Westmead, New South Wales, Australia
| | - R John Aitken
- *School of Environmental and Life Sciences, Discipline of Biological Sciences, and School of Environmental and Life Sciences, Discipline of Chemistry, The University of Newcastle, Callaghan, New South Wales, Australia; and Children's Medical Research Institute, The University of Sydney, Westmead, New South Wales, Australia
| | - Brett Nixon
- *School of Environmental and Life Sciences, Discipline of Biological Sciences, and School of Environmental and Life Sciences, Discipline of Chemistry, The University of Newcastle, Callaghan, New South Wales, Australia; and Children's Medical Research Institute, The University of Sydney, Westmead, New South Wales, Australia
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