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Investigation of Copy Number Variations (CNVs) of the Goat PPP3CA Gene and Their Effect on Litter Size and Semen Quality. Animals (Basel) 2022; 12:ani12040445. [PMID: 35203154 PMCID: PMC8868321 DOI: 10.3390/ani12040445] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 01/29/2022] [Accepted: 02/09/2022] [Indexed: 12/03/2022] Open
Abstract
Simple Summary PPP3CA is one of the candidate genes for goat reproduction, but no studies have been carried out yet. Therefore, the purpose of this study was to determine the associations between copy number variations in the goat PPP3CA gene and litter size and semen quality in goats, including Shaanbei white cashmere goats (SBWC) (n = 353) and Guizhou Heima (GZHM) goats (n = 64). Based on the association analysis, the results showed that only CNV1 (copy number variation 1) and CNV2 (copy number variation 2) were distinctly related to the first-birth litter size in female goats (p = 7.6802 × 10−11; p = 5.0895 × 10−9), and they were also significantly associated with the semen quality of SBWC goats (p < 0.05). These findings prove that the PPP3CA gene plays an important role in reproduction traits in goats. Abstract Copy number variations (CNVs) have many forms of variation structure, and they play an important role in the research of variety diversity, biological evolution and disease correlation. Since CNVs have a greater impact on gene regulation and expression, more studies are being finalized on CNVs in important livestock and poultry species. The protein phosphatase 3 catalytic subunit alpha (PPP3CA) is a key candidate gene involved in the goat fecundity trait, and has important effects on precocious puberty, estrogen signal transduction pathways and oocyte meiosis. Additionally, PPP3CA also has a dephosphorylation effect in the process of spermatogonial stem cell meiosis and spermatogenesis. So far, there is no research on the relationship between the copy number variations of the PPP3CA gene and reproduction traits. Therefore, the purpose of this study was to determine the association between copy number variations in the goat PPP3CA gene and litter size and semen quality in Shaanbei white cashmere goats (SBWC) (n = 353) and Guizhou Heima goats (n = 64). Based on the association analysis, the results showed that only CNV1 and CNV2 within the PPP3CA gene were distinctly related to the first-birth litter size in female goats (p = 7.6802 × 10−11; p = 5.0895 × 10−9, respectively) and they were also significantly associated with the semen quality of SBWC goats (p < 0.05). In addition, individuals with Loss genotypes demonstrated better phenotypic performance compared to those with other types. Therefore, CNV1 and CNV2 of the PPP3CA gene are potentially useful for breeding, as they are linked to important goat reproduction traits.
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Bai Y, Li J, Zhu H, Liu J, Dong S, Li L, Qu L, Chen H, Song X, Lan X. Deletion mutation within the goat PPP3CA gene identified by GWAS significantly affects litter size. Reprod Fertil Dev 2021; 33:476-483. [PMID: 33883061 DOI: 10.1071/rd20337] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 03/18/2021] [Indexed: 12/20/2022] Open
Abstract
The protein phosphatase 3 catalytic subunit α (PPP3CA) gene is a high reproduction traits candidate gene for goats as revealed by a genome-wide association study. The aim of this work was to explore the genetic variations of the goat PPP3CA as well as to evaluate the genetic effects on litter size. Three novel insertions/deletions (indels) within the goat PPP3CA were found and their minor allelic frequencies (MAF) were 0.105, 0.066, and 0.042, respectively. The results showed that only the 20bp indel polymorphism was significantly associated with litter size in Shaanbei white cashmere goats (P<0.05) and individuals with deletion/deletion (DD) genotypes demonstrated the junior phenotypes when compared with those with other genotypes. These findings suggested that the 20bp indel is a potential DNA marker for selecting superior individuals in marker-assisted selection for breeding concerning fecundity in goats.
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Affiliation(s)
- Yangyang Bai
- Laboratory of Animal Genome and Gene Function, College of Animal Science and Technology; Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, Northwest A&F University, Yangling Shaanxi 712100, China; and Shaanxi Provincial Engineering and Technology Research Center of Cashmere Goats, Yulin University, Yulin Shaanxi 719000, China; and Life Science Research Center, Yulin University, Yulin Shaanxi 719000, China
| | - Jie Li
- Laboratory of Animal Genome and Gene Function, College of Animal Science and Technology; Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, Northwest A&F University, Yangling Shaanxi 712100, China
| | - Haijing Zhu
- Shaanxi Provincial Engineering and Technology Research Center of Cashmere Goats, Yulin University, Yulin Shaanxi 719000, China; and Life Science Research Center, Yulin University, Yulin Shaanxi 719000, China; and Shaanxi Province 'Four Subjects One Union' Sheep and Goat Engineering & Technology University & Enterprise Alliance Research Center, Yulin, Shaanxi 719000, PR China; and Shaanxi Haoli cashmere goat Technology Development Co., Ltd, Yulin, Shaanxi, PR China, 719000
| | - Jinwang Liu
- Shaanxi Provincial Engineering and Technology Research Center of Cashmere Goats, Yulin University, Yulin Shaanxi 719000, China; and Life Science Research Center, Yulin University, Yulin Shaanxi 719000, China; and Shaanxi Province 'Four Subjects One Union' Sheep and Goat Engineering & Technology University & Enterprise Alliance Research Center, Yulin, Shaanxi 719000, PR China
| | - Shuwei Dong
- Shaanxi Provincial Engineering and Technology Research Center of Cashmere Goats, Yulin University, Yulin Shaanxi 719000, China; and Life Science Research Center, Yulin University, Yulin Shaanxi 719000, China; and Shaanxi Province 'Four Subjects One Union' Sheep and Goat Engineering & Technology University & Enterprise Alliance Research Center, Yulin, Shaanxi 719000, PR China
| | - Longping Li
- Shaanxi Provincial Engineering and Technology Research Center of Cashmere Goats, Yulin University, Yulin Shaanxi 719000, China; and Life Science Research Center, Yulin University, Yulin Shaanxi 719000, China; and Shaanxi Province 'Four Subjects One Union' Sheep and Goat Engineering & Technology University & Enterprise Alliance Research Center, Yulin, Shaanxi 719000, PR China
| | - Lei Qu
- Shaanxi Provincial Engineering and Technology Research Center of Cashmere Goats, Yulin University, Yulin Shaanxi 719000, China; and Life Science Research Center, Yulin University, Yulin Shaanxi 719000, China
| | - Hong Chen
- Laboratory of Animal Genome and Gene Function, College of Animal Science and Technology; Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, Northwest A&F University, Yangling Shaanxi 712100, China
| | - Xiaoyue Song
- Shaanxi Provincial Engineering and Technology Research Center of Cashmere Goats, Yulin University, Yulin Shaanxi 719000, China; and Life Science Research Center, Yulin University, Yulin Shaanxi 719000, China; and Shaanxi Province 'Four Subjects One Union' Sheep and Goat Engineering & Technology University & Enterprise Alliance Research Center, Yulin, Shaanxi 719000, PR China
| | - Xianyong Lan
- Laboratory of Animal Genome and Gene Function, College of Animal Science and Technology; Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, Northwest A&F University, Yangling Shaanxi 712100, China; and Corresponding author.
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Mihalas BP, Redgrove KA, Bernstein IR, Robertson MJ, McCluskey A, Nixon B, Holt JE, McLaughlin EA, Sutherland JM. Dynamin 2-dependent endocytosis is essential for mouse oocyte development and fertility. FASEB J 2020; 34:5162-5177. [PMID: 32065700 DOI: 10.1096/fj.201902184r] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 01/18/2020] [Accepted: 01/29/2020] [Indexed: 12/27/2022]
Abstract
During folliculogenesis, oocytes are dependent on metabolic and molecular support from surrounding somatic cells. Here, we examined the role of the dynamin (DNM) family of mechanoenzymes in mediating endocytotic uptake into growing follicular oocytes. We found DNM1 and DNM2 to be highly expressed in growing follicular oocytes as well as in mature germinal vesicle (GV) and metaphase II (MII) stage oocytes. Moreover, oocyte-specific conditional knockout (cKO) of DNM2 (DNM2Δ) led to complete sterility, with follicles arresting at the preantral stage of development. In addition, DNM2Δ ovaries were characterized by disrupted follicular growth as well as oocyte and follicle apoptosis. Further, the loss of DNM activity, either through DNM2 cKO or through pharmacological inhibition (Dyngo 6a) led to the impairment of endocytotic pathways in preantral oocytes as well as in mature GV and MII oocytes, respectively. Loss of DNM activity resulted in the redistribution of endosomes and the misslocalization of clathrin and actin, suggesting dysfunctional endocytosis. Notably, there was no observable effect on the fertility of DNM1Δ females. Our study has provided new insight into the complex and dynamic nature of oocyte growth during folliculogenesis, suggesting a role for DNM2 in mediating the endocytotic events that are essential for oocyte development.
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Affiliation(s)
- Bettina P Mihalas
- School of Environmental and Life Sciences, University of Newcastle, Callaghan, NSW, Australia.,Priority Research Centre for Reproductive Science, University of Newcastle, Callaghan, NSW, Australia.,Pregnancy and Reproduction Program, Hunter Medial Research Institute, New Lambton Heights, NSW, Australia
| | - Kate A Redgrove
- School of Environmental and Life Sciences, University of Newcastle, Callaghan, NSW, Australia.,Priority Research Centre for Reproductive Science, University of Newcastle, Callaghan, NSW, Australia.,Pregnancy and Reproduction Program, Hunter Medial Research Institute, New Lambton Heights, NSW, Australia
| | - Ilana R Bernstein
- School of Environmental and Life Sciences, University of Newcastle, Callaghan, NSW, Australia.,Priority Research Centre for Reproductive Science, University of Newcastle, Callaghan, NSW, Australia.,Pregnancy and Reproduction Program, Hunter Medial Research Institute, New Lambton Heights, NSW, Australia
| | - Mark J Robertson
- School of Environmental and Life Sciences, University of Newcastle, Callaghan, NSW, Australia.,Priority Research Centre in Chemical Biology, University of Newcastle, Callaghan, NSW, Australia
| | - Adam McCluskey
- School of Environmental and Life Sciences, University of Newcastle, Callaghan, NSW, Australia.,Priority Research Centre in Chemical Biology, University of Newcastle, Callaghan, NSW, Australia
| | - Brett Nixon
- School of Environmental and Life Sciences, University of Newcastle, Callaghan, NSW, Australia.,Priority Research Centre for Reproductive Science, University of Newcastle, Callaghan, NSW, Australia.,Pregnancy and Reproduction Program, Hunter Medial Research Institute, New Lambton Heights, NSW, Australia
| | - Janet E Holt
- Priority Research Centre for Reproductive Science, University of Newcastle, Callaghan, NSW, Australia.,School of Biomedical Sciences & Pharmacy, University of Newcastle, Callaghan, NSW, Australia
| | - Eileen A McLaughlin
- School of Environmental and Life Sciences, University of Newcastle, Callaghan, NSW, Australia.,Priority Research Centre for Reproductive Science, University of Newcastle, Callaghan, NSW, Australia.,Pregnancy and Reproduction Program, Hunter Medial Research Institute, New Lambton Heights, NSW, Australia.,School of Science, Western Sydney University, Penrith, NSW, Australia.,School of Biological Sciences, The University of Auckland, Auckland, New Zealand
| | - Jessie M Sutherland
- Priority Research Centre for Reproductive Science, University of Newcastle, Callaghan, NSW, Australia.,Pregnancy and Reproduction Program, Hunter Medial Research Institute, New Lambton Heights, NSW, Australia.,School of Biomedical Sciences & Pharmacy, University of Newcastle, Callaghan, NSW, Australia
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Gao N, Chen Y, Liu X, Zhao Y, Zhu L, Liu A, Jiang W, Peng X, Zhang C, Tang Z, Li X, Chen Y. Weighted single-step GWAS identified candidate genes associated with semen traits in a Duroc boar population. BMC Genomics 2019; 20:797. [PMID: 31666004 PMCID: PMC6822442 DOI: 10.1186/s12864-019-6164-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Accepted: 10/09/2019] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND In the pig production industry, artificial insemination (AI) plays an important role in enlarging the beneficial impact of elite boars. Understanding the genetic architecture and detecting genetic markers associated with semen traits can help in improving genetic selection for such traits and accelerate genetic progress. In this study, we utilized a weighted single-step genome-wide association study (wssGWAS) procedure to detect genetic regions and further candidate genes associated with semen traits in a Duroc boar population. Overall, the full pedigree consists of 5284 pigs (12 generations), of which 2693 boars have semen data (143,113 ejaculations) and 1733 pigs were genotyped with 50 K single nucleotide polymorphism (SNP) array. RESULTS Results show that the most significant genetic regions (0.4 Mb windows) explained approximately 2%~ 6% of the total genetic variances for the studied traits. Totally, the identified significant windows (windows explaining more than 1% of total genetic variances) explained 28.29, 35.31, 41.98, and 20.60% of genetic variances (not phenotypic variance) for number of sperm cells, sperm motility, sperm progressive motility, and total morphological abnormalities, respectively. Several genes that have been previously reported to be associated with mammal spermiogenesis, testes functioning, and male fertility were detected and treated as candidate genes for the traits of interest: Number of sperm cells, TDRD5, QSOX1, BLK, TIMP3, THRA, CSF3, and ZPBP1; Sperm motility, PPP2R2B, NEK2, NDRG, ADAM7, SKP2, and RNASET2; Sperm progressive motility, SH2B1, BLK, LAMB1, VPS4A, SPAG9, LCN2, and DNM1; Total morphological abnormalities, GHR, SELENOP, SLC16A5, SLC9A3R1, and DNAI2. CONCLUSIONS In conclusion, candidate genes associated with Duroc boars' semen traits, including the number of sperm cells, sperm motility, sperm progressive motility, and total morphological abnormalities, were identified using wssGWAS. KEGG and GO enrichment analysis indicate that the identified candidate genes were enriched in biological processes and functional terms may be involved into spermiogenesis, testes functioning, and male fertility.
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Affiliation(s)
- Ning Gao
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, North Third Road, Guangzhou Higher Education Mega Center, Guangzhou, 510006, China
| | - Yilong Chen
- Key Laboratory of Agricultural Animal Genetics, Breeding, and Reproduction of the Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, China
| | - Xiaohong Liu
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, North Third Road, Guangzhou Higher Education Mega Center, Guangzhou, 510006, China
| | - Yunxiang Zhao
- Guangxi Xiubo genetics technology Co., LTD, Guigang, 537100, China
| | - Lin Zhu
- Guangxi Xiubo genetics technology Co., LTD, Guigang, 537100, China
| | - Ali Liu
- Key Laboratory of Agricultural Animal Genetics, Breeding, and Reproduction of the Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, China
| | - Wei Jiang
- Guangxi Xiubo genetics technology Co., LTD, Guigang, 537100, China
| | - Xing Peng
- Guangxi Xiubo genetics technology Co., LTD, Guigang, 537100, China
| | - Conglin Zhang
- Guangxi Yangxiang Agriculture and Husbandry Co., LTD, Guigang, 537100, China
| | - Zhenshuang Tang
- Key Laboratory of Agricultural Animal Genetics, Breeding, and Reproduction of the Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, China
| | - Xinyun Li
- Key Laboratory of Agricultural Animal Genetics, Breeding, and Reproduction of the Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, China
| | - Yaosheng Chen
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, North Third Road, Guangzhou Higher Education Mega Center, Guangzhou, 510006, China.
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Gust KA, Lotufo GR, Thiyagarajah A, Barker ND, Ji Q, Marshall K, Wilbanks MS, Chappell P. Molecular Evaluation of Impacted Reproductive Physiology in Fathead Minnow Testes Provides Mechanistic Insights into Insensitive Munitions Toxicology. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2019; 213:105204. [PMID: 31185427 DOI: 10.1016/j.aquatox.2019.05.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 05/13/2019] [Accepted: 05/13/2019] [Indexed: 06/09/2023]
Abstract
Previous toxicological investigations of the insensitive munition (IM), 3-nitro-1,2,4-triazol-5-one (NTO), demonstrated histopathological and physiological impacts in mammalian testes. The implications of these findings for fish was unknown, therefore we investigated the effects of chronic (21 day) exposures to NTO and an NTO-containing IM formulation called IMX-101 (composed of 2,4-dinitroanisole (DNAN), nitroguanidine (NQ), and NTO) in adult male fathead minnows to assess if impacts on testes were conserved. The NTO exposure caused no significant mortality through the maximum exposure concentration (720 mg/L, measured), however NTO elicited testicular impacts causing significant asynchrony in spermatogenesis and necrosis in secondary spermatocytes at the two highest exposure concentrations (383 mg/L and 720 mg/L) and testicular degeneration at the highest exposure. Microarray-based transcriptomics analysis identified significant enrichment of steroid metabolism pathways and mTORC-signal control of spermatogonia differentiation in NTO exposures each having logical connections to observed asynchronous spermatogenesis. Additionally, NTO impaired transcriptional expression for genes supporting sperm structural and flagellar development including sperm-associated antigen 6 (Spag6). These functional transcriptomic responses are hypothesized contributors to impacted reproductive physiology in NTO exposures that ultimately lead to reductions in spermatozoa. In contrast to NTO, the IMX-101 formulation elicited significant mortality at the two highest exposure concentrations of 25.2 and 50.9 mg/L (DNAN nominal + NTO measured + NQ measured). Unlike NTO and NQ, the DNAN component of the IMX-101 formulation underwent significant transformation in the 21d exposure. From previous investigations, neither NTO nor NQ caused mortality in fish at >1000 mg/L suggesting that mortality in the present study arose from DNAN / DNAN-attributable transformation products. The 12.6 mg/L IMX-101 exposure caused significant sublethal impacts on testes including sperm necrosis, interstitial fibrosis, and Sertoli-like cell hyperplasia. Transcriptional profiles for IMX-101 indicated significant enrichment on multiple signaling pathways supporting spermatogenesis, mitosis / meiosis, and flagellar structure, all logically connected to observed sperm necrosis. Additionally, pronounced transcriptional increases within the PPARα-RXRα pathway, a known DNAN target, has been hypothesized to correspond to Sertoli cell hyperplasia, presumably as a compensatory response to fulfill the nurse-function of Sertoli cells during spermatogenesis. Overall, the transcriptional results indicated unique molecular responses for NTO and IMX-101. Regarding chemical hazard, NTO impacted testes and impaired spermatogenesis, but at high exposure concentrations (≥ 192 mg/L), whereas the IMX-101 formulation, elicited mortality and impacts on reproductive physiology likely caused by DNAN and its transformation products present at concentrations well below the NTO-component concentration within the IMX-101 mixture formulation.
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Affiliation(s)
- Kurt A Gust
- U.S. Army Engineer Research and Development Center, Environmental Laboratory, Vicksburg, Mississippi, USA.
| | - Guilherme R Lotufo
- U.S. Army Engineer Research and Development Center, Environmental Laboratory, Vicksburg, Mississippi, USA.
| | | | | | - Qing Ji
- Bennett Aerospace, Cary, NC, 27511, USA.
| | | | - Mitchell S Wilbanks
- U.S. Army Engineer Research and Development Center, Environmental Laboratory, Vicksburg, Mississippi, USA.
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E GX, Zhao YJ, Huang YF. Selection signatures of litter size in Dazu black goats based on a whole genome sequencing mixed pools strategy. Mol Biol Rep 2019; 46:5517-5523. [DOI: 10.1007/s11033-019-04904-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Accepted: 06/01/2019] [Indexed: 12/19/2022]
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Zhou W, Stanger SJ, Anderson AL, Bernstein IR, De Iuliis GN, McCluskey A, McLaughlin EA, Dun MD, Nixon B. Mechanisms of tethering and cargo transfer during epididymosome-sperm interactions. BMC Biol 2019; 17:35. [PMID: 30999907 PMCID: PMC6474069 DOI: 10.1186/s12915-019-0653-5] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Accepted: 04/04/2019] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND The mammalian epididymis is responsible for the provision of a highly specialized environment in which spermatozoa acquire functional maturity and are subsequently stored in preparation for ejaculation. Making important contributions to both processes are epididymosomes, small extracellular vesicles released from the epididymal soma via an apocrine secretory pathway. While considerable effort has been focused on defining the cargo transferred between epididymosomes and spermatozoa, comparatively less is known about the mechanistic basis of these interactions. To investigate this phenomenon, we have utilized an in vitro co-culture system to track the transfer of biotinylated protein cargo between mouse epididymosomes and recipient spermatozoa isolated from the caput epididymis; an epididymal segment that is of critical importance for promoting sperm maturation. RESULTS Our data indicate that epididymosome-sperm interactions are initiated via tethering of the epididymosome to receptors restricted to the post-acrosomal domain of the sperm head. Thereafter, epididymosomes mediate the transfer of protein cargo to spermatozoa via a process that is dependent on dynamin, a family of mechanoenzymes that direct intercellular vesicle trafficking. Notably, upon co-culture of sperm with epididymosomes, dynamin 1 undergoes a pronounced relocation between the peri- and post-acrosomal domains of the sperm head. This repositioning of dynamin 1 is potentially mediated via its association with membrane rafts and ideally locates the enzyme to facilitate the uptake of epididymosome-borne proteins. Accordingly, disruption of membrane raft integrity or pharmacological inhibition of dynamin both potently suppress the transfer of biotinylated epididymosome proteins to spermatozoa. CONCLUSION Together, these data provide new mechanistic insight into epididymosome-sperm interactions with potential implications extending to the manipulation of sperm maturation for the purpose of fertility regulation.
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Affiliation(s)
- Wei Zhou
- Priority Research Centre for Reproductive Science, School of Environmental and Life Sciences, Discipline of Biological Sciences, The University of Newcastle, University Drive, Callaghan, NSW, 2308, Australia
| | - Simone J Stanger
- Priority Research Centre for Reproductive Science, School of Environmental and Life Sciences, Discipline of Biological Sciences, The University of Newcastle, University Drive, Callaghan, NSW, 2308, Australia
| | - Amanda L Anderson
- Priority Research Centre for Reproductive Science, School of Environmental and Life Sciences, Discipline of Biological Sciences, The University of Newcastle, University Drive, Callaghan, NSW, 2308, Australia
| | - Ilana R Bernstein
- Priority Research Centre for Reproductive Science, School of Environmental and Life Sciences, Discipline of Biological Sciences, The University of Newcastle, University Drive, Callaghan, NSW, 2308, Australia
| | - Geoffry N De Iuliis
- Priority Research Centre for Reproductive Science, School of Environmental and Life Sciences, Discipline of Biological Sciences, The University of Newcastle, University Drive, Callaghan, NSW, 2308, Australia
| | - Adam McCluskey
- Priority Research Centre for Chemical Biology, School of Environmental and Life Sciences, The University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Eileen A McLaughlin
- Priority Research Centre for Reproductive Science, School of Environmental and Life Sciences, Discipline of Biological Sciences, The University of Newcastle, University Drive, Callaghan, NSW, 2308, Australia.,School of Biological Sciences, University of Auckland, Auckland, 1142, New Zealand.,Faculty of Science and Technology, University of Canberra, Bruce, ACT, 2617, Australia
| | - Matthew D Dun
- School of Biomedical Sciences and Pharmacy, Faculty of Health and Medicine, The University of Newcastle, Callaghan, NSW, 2308, Australia.,Hunter Medical Research Institute, Cancer Research Program, New Lambton Heights, NSW, 2305, Australia
| | - Brett Nixon
- Priority Research Centre for Reproductive Science, School of Environmental and Life Sciences, Discipline of Biological Sciences, The University of Newcastle, University Drive, Callaghan, NSW, 2308, Australia.
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Gerber D, Ghidinelli M, Tinelli E, Somandin C, Gerber J, Pereira JA, Ommer A, Figlia G, Miehe M, Nägeli LG, Suter V, Tadini V, Sidiropoulos PNM, Wessig C, Toyka KV, Suter U. Schwann cells, but not Oligodendrocytes, Depend Strictly on Dynamin 2 Function. eLife 2019; 8:e42404. [PMID: 30648534 PMCID: PMC6335055 DOI: 10.7554/elife.42404] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Accepted: 12/31/2018] [Indexed: 12/13/2022] Open
Abstract
Myelination requires extensive plasma membrane rearrangements, implying that molecules controlling membrane dynamics play prominent roles. The large GTPase dynamin 2 (DNM2) is a well-known regulator of membrane remodeling, membrane fission, and vesicular trafficking. Here, we genetically ablated Dnm2 in Schwann cells (SCs) and in oligodendrocytes of mice. Dnm2 deletion in developing SCs resulted in severely impaired axonal sorting and myelination onset. Induced Dnm2 deletion in adult SCs caused a rapidly-developing peripheral neuropathy with abundant demyelination. In both experimental settings, mutant SCs underwent prominent cell death, at least partially due to cytokinesis failure. Strikingly, when Dnm2 was deleted in adult SCs, non-recombined SCs still expressing DNM2 were able to remyelinate fast and efficiently, accompanied by neuropathy remission. These findings reveal a remarkable self-healing capability of peripheral nerves that are affected by SC loss. In the central nervous system, however, we found no major defects upon Dnm2 deletion in oligodendrocytes.
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Affiliation(s)
- Daniel Gerber
- Department of BiologyInstitute of Molecular Health Sciences, Swiss Federal Institute of Technology, ETH ZurichZurichSwitzerland
| | - Monica Ghidinelli
- Department of BiologyInstitute of Molecular Health Sciences, Swiss Federal Institute of Technology, ETH ZurichZurichSwitzerland
| | - Elisa Tinelli
- Department of BiologyInstitute of Molecular Health Sciences, Swiss Federal Institute of Technology, ETH ZurichZurichSwitzerland
| | - Christian Somandin
- Department of BiologyInstitute of Molecular Health Sciences, Swiss Federal Institute of Technology, ETH ZurichZurichSwitzerland
| | - Joanne Gerber
- Department of BiologyInstitute of Molecular Health Sciences, Swiss Federal Institute of Technology, ETH ZurichZurichSwitzerland
| | - Jorge A Pereira
- Department of BiologyInstitute of Molecular Health Sciences, Swiss Federal Institute of Technology, ETH ZurichZurichSwitzerland
| | - Andrea Ommer
- Department of BiologyInstitute of Molecular Health Sciences, Swiss Federal Institute of Technology, ETH ZurichZurichSwitzerland
| | - Gianluca Figlia
- Department of BiologyInstitute of Molecular Health Sciences, Swiss Federal Institute of Technology, ETH ZurichZurichSwitzerland
| | - Michaela Miehe
- Department of BiologyInstitute of Molecular Health Sciences, Swiss Federal Institute of Technology, ETH ZurichZurichSwitzerland
| | - Lukas G Nägeli
- Department of BiologyInstitute of Molecular Health Sciences, Swiss Federal Institute of Technology, ETH ZurichZurichSwitzerland
| | - Vanessa Suter
- Department of BiologyInstitute of Molecular Health Sciences, Swiss Federal Institute of Technology, ETH ZurichZurichSwitzerland
| | - Valentina Tadini
- Department of BiologyInstitute of Molecular Health Sciences, Swiss Federal Institute of Technology, ETH ZurichZurichSwitzerland
| | - Páris NM Sidiropoulos
- Department of BiologyInstitute of Molecular Health Sciences, Swiss Federal Institute of Technology, ETH ZurichZurichSwitzerland
| | - Carsten Wessig
- Department of NeurologyUniversity Hospital of Würzburg, University of WürzburgWürzburgGermany
| | - Klaus V Toyka
- Department of NeurologyUniversity Hospital of Würzburg, University of WürzburgWürzburgGermany
| | - Ueli Suter
- Department of BiologyInstitute of Molecular Health Sciences, Swiss Federal Institute of Technology, ETH ZurichZurichSwitzerland
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9
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Fuller EA, Sominsky L, Sutherland JM, Redgrove KA, Harms L, McLaughlin EA, Hodgson DM. Neonatal immune activation depletes the ovarian follicle reserve and alters ovarian acute inflammatory mediators in neonatal rats. Biol Reprod 2018; 97:719-730. [PMID: 29040417 DOI: 10.1093/biolre/iox123] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Accepted: 10/07/2017] [Indexed: 12/30/2022] Open
Abstract
Normal ovarian development is crucial for female reproductive success and longevity. Interruptions to the delicate process of initial folliculogenesis may lead to ovarian dysfunction. We have previously demonstrated that an early life immune challenge in the rat, induced by administration of lipopolysaccharide (LPS) on postnatal day (PND) 3 and 5, depletes ovarian follicle reserve long term. Here, we hypothesized that this neonatal immune challenge leads to an increase in peripheral and ovarian inflammatory signaling, contributing to an acute depletion of ovarian follicles. Morphological analysis of neonatal ovaries indicated that LPS administration significantly depleted PND 5 primordial follicle populations and accelerated follicle maturation. LPS exposure upregulated circulating interleukin 6, tumor necrosis factor alpha (TNFa), and C-reactive protein on PND 5, and upregulated ovarian mRNA expression of Tnfa, mitogen-activated protein kinase 8 (Mapk8/Jnk1), and growth differentiation factor 9 (Gdf9) (P < 0.05). Mass spectrometry and cell signaling pathway analysis indicated upregulation of cellular pathways associated with acute phase signaling, and cellular survival and assembly. Apoptosis assessed by terminal deoxynucleotidyl transferase dUTP nick end labeling indicated significantly increased positive staining in the ovaries of LPS-treated neonates. These findings suggest that increased proinflammatory signaling within the neonatal ovary may be responsible for the LPS-induced depletion of the primordial follicle pool. These findings also have implications for female reproductive health, as the ovarian reserve is a major determinate of female reproductive longevity.
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Affiliation(s)
- Erin A Fuller
- Laboratory of Neuroimmunology, Priority Research Centre for Brain and Mental Health Research, School of Psychology, University of Newcastle, Callaghan, New South Wales, Australia
| | - Luba Sominsky
- School of Health and Biomedical Sciences, Royal Melbourne Institute of Technology University, Melbourne, Victoria, Australia
| | - Jessie M Sutherland
- School of Environmental and Life Sciences, Priority Research Centre in Chemical Biology, University of Newcastle, Callaghan, New South Wales, Australia
| | - Kate A Redgrove
- School of Environmental and Life Sciences, Priority Research Centre in Chemical Biology, University of Newcastle, Callaghan, New South Wales, Australia
| | - Lauren Harms
- Laboratory of Neuroimmunology, Priority Research Centre for Brain and Mental Health Research, School of Psychology, University of Newcastle, Callaghan, New South Wales, Australia
| | - Eileen A McLaughlin
- School of Environmental and Life Sciences, Priority Research Centre in Chemical Biology, University of Newcastle, Callaghan, New South Wales, Australia.,School of Biological Sciences, University of Auckland, Auckland, New Zealand
| | - Deborah M Hodgson
- Laboratory of Neuroimmunology, Priority Research Centre for Brain and Mental Health Research, School of Psychology, University of Newcastle, Callaghan, New South Wales, Australia
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Zhou W, Anderson AL, Turner AP, De Iuliis GN, McCluskey A, McLaughlin EA, Nixon B. Characterization of a novel role for the dynamin mechanoenzymes in the regulation of human sperm acrosomal exocytosis. Mol Hum Reprod 2017; 23:657-673. [DOI: 10.1093/molehr/gax044] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Accepted: 07/27/2017] [Indexed: 12/16/2022] Open
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