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He L, Sun F, Wu Y, Li Z, Fu Y, Huang Q, Li J, Wang Z, Cai J, Feng C, Deng X, Gu H, He X, Yu J, Sun F. L(1)10Bb serves as a conservative determinant for soma-germline communications via cellular non-autonomous effects within the testicular stem cell niche. Mol Cell Endocrinol 2024; 591:112278. [PMID: 38795826 DOI: 10.1016/j.mce.2024.112278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2024] [Revised: 04/21/2024] [Accepted: 05/07/2024] [Indexed: 05/28/2024]
Abstract
The testicular stem cell niche is the central regulator of spermatogenesis in Drosophila melanogaster. However, the underlying regulatory mechanisms are unclear. This study demonstrated the crucial role of lethal (1) 10Bb [l(1)10Bb] in regulating the testicular stem cell niche. Dysfunction of l(1)10Bb in early-stage cyst cells led to male fertility disorders and compromised cyst stem cell maintenance. Moreover, the dysfunction of l(1)10Bb in early-stage cyst cells exerted non-autonomous effects on germline stem cell differentiation, independently of hub signals. Notably, our study highlights the rescue of testicular defects through ectopic expression of L(1)10Bb and the human homologous protein BUD31 homolog (BUD31). In addition, l(1)10Bb dysfunction in early-stage cyst cells downregulated the expression of spliceosome subunits in the Sm and the precursor RNA processing complexes. Collectively, our findings established l(1)10Bb as a pivotal factor in the modulation of Drosophila soma-germline communications within the testicular stem cell niche.
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Affiliation(s)
- Lei He
- Institute of Reproductive Medicine, School of Medicine, Nantong University, Nantong, 226001, China
| | - Feiteng Sun
- Institute of Reproductive Medicine, School of Medicine, Nantong University, Nantong, 226001, China
| | - Yunhao Wu
- Institute of Reproductive Medicine, School of Medicine, Nantong University, Nantong, 226001, China
| | - Zhiran Li
- Institute of Reproductive Medicine, School of Medicine, Nantong University, Nantong, 226001, China
| | - Yangbo Fu
- Institute of Reproductive Medicine, School of Medicine, Nantong University, Nantong, 226001, China
| | - Qiuru Huang
- Institute of Reproductive Medicine, School of Medicine, Nantong University, Nantong, 226001, China
| | - Jiaxin Li
- Institute of Reproductive Medicine, School of Medicine, Nantong University, Nantong, 226001, China
| | - Zihan Wang
- Institute of Reproductive Medicine, School of Medicine, Nantong University, Nantong, 226001, China
| | - Jiaying Cai
- Institute of Reproductive Medicine, School of Medicine, Nantong University, Nantong, 226001, China
| | - Chenrui Feng
- Institute of Reproductive Medicine, School of Medicine, Nantong University, Nantong, 226001, China
| | - Xiaonan Deng
- Institute of Reproductive Medicine, School of Medicine, Nantong University, Nantong, 226001, China
| | - Han Gu
- Institute of Reproductive Medicine, School of Medicine, Nantong University, Nantong, 226001, China
| | - Xuxin He
- Institute of Reproductive Medicine, School of Medicine, Nantong University, Nantong, 226001, China
| | - Jun Yu
- Institute of Reproductive Medicine, School of Medicine, Nantong University, Nantong, 226001, China.
| | - Fei Sun
- Institute of Reproductive Medicine, School of Medicine, Nantong University, Nantong, 226001, China.
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2
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Cincotta SA, Richardson N, Foecke MH, Laird DJ. Differential susceptibility of male and female germ cells to glucocorticoid-mediated signaling. eLife 2024; 12:RP90164. [PMID: 38226689 PMCID: PMC10945581 DOI: 10.7554/elife.90164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2024] Open
Abstract
While physiologic stress has long been known to impair mammalian reproductive capacity through hormonal dysregulation, mounting evidence now suggests that stress experienced prior to or during gestation may also negatively impact the health of future offspring. Rodent models of gestational physiologic stress can induce neurologic and behavioral changes that persist for up to three generations, suggesting that stress signals can induce lasting epigenetic changes in the germline. Treatment with glucocorticoid stress hormones is sufficient to recapitulate the transgenerational changes seen in physiologic stress models. These hormones are known to bind and activate the glucocorticoid receptor (GR), a ligand-inducible transcription factor, thus implicating GR-mediated signaling as a potential contributor to the transgenerational inheritance of stress-induced phenotypes. Here, we demonstrate dynamic spatiotemporal regulation of GR expression in the mouse germline, showing expression in the fetal oocyte as well as the perinatal and adult spermatogonia. Functionally, we find that fetal oocytes are intrinsically buffered against changes in GR signaling, as neither genetic deletion of GR nor GR agonism with dexamethasone altered the transcriptional landscape or the progression of fetal oocytes through meiosis. In contrast, our studies revealed that the male germline is susceptible to glucocorticoid-mediated signaling, specifically by regulating RNA splicing within the spermatogonia, although this does not abrogate fertility. Together, our work suggests a sexually dimorphic function for GR in the germline, and represents an important step towards understanding the mechanisms by which stress can modulate the transmission of genetic information through the germline.
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Affiliation(s)
- Steven A Cincotta
- Department of Obstetrics, Gynecology and Reproductive Sciences, Center for Reproductive Sciences, Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San FranciscoSan FranciscoUnited States
| | - Nainoa Richardson
- Department of Obstetrics, Gynecology and Reproductive Sciences, Center for Reproductive Sciences, Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San FranciscoSan FranciscoUnited States
| | - Mariko H Foecke
- Department of Obstetrics, Gynecology and Reproductive Sciences, Center for Reproductive Sciences, Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San FranciscoSan FranciscoUnited States
| | - Diana J Laird
- Department of Obstetrics, Gynecology and Reproductive Sciences, Center for Reproductive Sciences, Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San FranciscoSan FranciscoUnited States
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3
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Cincotta SA, Richardson N, Foecke MH, Laird DJ. Differential susceptibility of male and female germ cells to glucocorticoid-mediated signaling. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.06.30.547215. [PMID: 37425891 PMCID: PMC10327205 DOI: 10.1101/2023.06.30.547215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/11/2023]
Abstract
While physiologic stress has long been known to impair mammalian reproductive capacity through hormonal dysregulation, mounting evidence now suggests that stress experienced prior to or during gestation may also negatively impact the health of future offspring. Rodent models of gestational physiologic stress can induce neurologic and behavioral changes that persist for up to three generations, suggesting that stress signals can induce lasting epigenetic changes in the germline. Treatment with glucocorticoid stress hormones is sufficient to recapitulate the transgenerational changes seen in physiologic stress models. These hormones are known to bind and activate the glucocorticoid receptor (GR), a ligand-inducible transcription factor, thus implicating GR-mediated signaling as a potential contributor to the transgenerational inheritance of stress-induced phenotypes. Here we demonstrate dynamic spatiotemporal regulation of GR expression in the mouse germline, showing expression in the fetal oocyte as well as the perinatal and adult spermatogonia. Functionally, we find that fetal oocytes are intrinsically buffered against changes in GR signaling, as neither genetic deletion of GR nor GR agonism with dexamethasone altered the transcriptional landscape or the progression of fetal oocytes through meiosis. In contrast, our studies revealed that the male germline is susceptible to glucocorticoid-mediated signaling, specifically by regulating RNA splicing within the spermatogonia, although this does not abrogate fertility. Together, our work suggests a sexually dimorphic function for GR in the germline, and represents an important step towards understanding the mechanisms by which stress can modulate the transmission of genetic information through the germline.
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Affiliation(s)
- Steven A. Cincotta
- Department of Obstetrics, Gynecology and Reproductive Sciences, Center for Reproductive Sciences, Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, CA, USA
| | - Nainoa Richardson
- Department of Obstetrics, Gynecology and Reproductive Sciences, Center for Reproductive Sciences, Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, CA, USA
| | - Mariko H. Foecke
- Department of Obstetrics, Gynecology and Reproductive Sciences, Center for Reproductive Sciences, Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, CA, USA
| | - Diana J. Laird
- Department of Obstetrics, Gynecology and Reproductive Sciences, Center for Reproductive Sciences, Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, CA, USA
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Jeanne F, Bernay B, Sourdaine P. Comparative Proteome Analysis of Four Stages of Spermatogenesis in the Small-Spotted Catshark ( Scyliorhinus canicula), Using High-Resolution NanoLC-ESI-MS/MS. J Proteome Res 2023. [PMID: 37290099 DOI: 10.1021/acs.jproteome.3c00206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Spermatogenesis is a highly specialized process of cell proliferation and differentiation leading to the production of spermatozoa from spermatogonial stem cells. Due to its testicular anatomy, Scyliorhinus canicula is an interesting model to explore stage-based changes in proteins during spermatogenesis. The proteomes of four testicular zones corresponding to the germinative niche and to spermatocysts (cysts) with spermatogonia (zone A), cysts with spermatocytes (zone B), cysts with young spermatids (zone C), and cysts with late spermatids (zone D) have been analyzed by nanoLC-ESI-MS/MS. Gene ontology and KEGG annotations were also performed. A total of 3346 multiple protein groups were identified. Zone-specific protein analyses highlighted RNA-processing, chromosome-related processes, cilium organization, and cilium activity in zones A, D, C, and D, respectively. Analyses of proteins with zone-dependent abundance revealed processes related to cellular stress, ubiquitin-dependent degradation by the proteasome, post-transcriptional regulation, and regulation of cellular homeostasis. Our results also suggest that the roles of some proteins, such as ceruloplasmin, optineurin, the pregnancy zone protein, PA28β or the Culling-RING ligase 5 complex, as well as some uncharacterized proteins, during spermatogenesis could be further explored. Finally, the study of this shark species allows one to integrate these data in an evolutionary context of the regulation of spermatogenesis. Mass spectrometry data are freely accessible via iProX-integrated Proteome resources (https://www.iprox.cn/) for reuse purposes.
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Affiliation(s)
- Fabian Jeanne
- Université de Caen Normandie, MNHN, SU, UA, CNRS, IRD, Laboratoire de Biologie des Organismes et Ecosystèmes Aquatiques (BOREA), UMR 8067, 14032 Caen cedex 5, France
| | - Benoît Bernay
- Université de Caen Normandie - Plateforme PROTEOGEN, US EMerode, 14032 Caen cedex 5, France
| | - Pascal Sourdaine
- Université de Caen Normandie, MNHN, SU, UA, CNRS, IRD, Laboratoire de Biologie des Organismes et Ecosystèmes Aquatiques (BOREA), UMR 8067, 14032 Caen cedex 5, France
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Peng M, Wang W, Zhu W, Bai Y, Ning N, Huang Q, Pang X, Zhou J, Zhang H, Zhao K. Zishen Yutai Pill improves sperm quality and reduces testicular inflammation in experimental varicocele rats. Heliyon 2023; 9:e17161. [PMID: 37484236 PMCID: PMC10361325 DOI: 10.1016/j.heliyon.2023.e17161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 06/05/2023] [Accepted: 06/08/2023] [Indexed: 07/25/2023] Open
Abstract
Objective Zishen Yutai Pill (ZYP), containing 15 Chinese traditional medicine, is a safe and well quality-controlled TCM preparation with promising effects in many fields of reproduction. The current study was designed to investigate the therapeutic effects of ZYP on sperm quality and testis in varicocele (VC) rats. Materials and methods Male Wistar rats were randomly divided into four groups (n = 6), i.e., a sham group, a VC group, and VC groups treated with different dose of ZYP (1575 and 3150 mg/kg/d, respectively). The experimental VC model was established by partial ligation of left renal vein. Six weeks after model establishment, ZYP was orally administered once a day for the next 6 weeks. Parameters relating to testis and sperm quality were assessed. Hematoxylin-eosin staining was used to showed testicular tissue damage in experimental VC rats. Expressions of proteins relating to NLRP3 inflammasome pathways were determined using Western blot (WB). The mRNA expressions of relating genes were determined using quantitative real-time PCR (qRT-PCR) analysis. Results ZYP could significantly improve sperm motility and decrease sperm DNA fragmentation index in VC rats (P < 0.05). Hematoxylin-eosin (HE) staining showed that ZYP could alleviate testicular tissue damage caused by experimental varicocele in rats. Compared to the VC model, expressions of NLRP3, ASC, and caspase-1 in rats treated with ZYP were significantly down-regulated, as validated by both qRT-PCR and WB analysis (P < 0.05). Conclusions In brief, ZYP could improve sperm DNA integrity by inhibiting the NLRP3 inflammasome pathway and alleviating the chronic inflammation of testicular tissue induced by experimental varicocele in rats.
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Affiliation(s)
- Meilin Peng
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Wei Wang
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Wei Zhu
- Department of Gynecology and Obstetrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yang Bai
- Hospital of Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Na Ning
- Guangzhou Baiyunshan Zhongyi Pharmaceutical Co. Ltd, Guangzhou, Guangdong, China
| | - Qiuling Huang
- Guangzhou Baiyunshan Zhongyi Pharmaceutical Co. Ltd, Guangzhou, Guangdong, China
| | - Xiufei Pang
- Guangzhou Baiyunshan Zhongyi Pharmaceutical Co. Ltd, Guangzhou, Guangdong, China
| | - Jiewen Zhou
- Guangzhou Baiyunshan Zhongyi Pharmaceutical Co. Ltd, Guangzhou, Guangdong, China
| | - Huiping Zhang
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Kai Zhao
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Hamad SK, Elomda AM, Sun Y, Li Y, Zong Y, Chen J, Abbas AO, Stino FKR, Nazmi A, Mehaisen GMK. The In Vitro Evaluation of Rooster Semen Pellets Frozen with Dimethylacetamide. Animals (Basel) 2023; 13:ani13101603. [PMID: 37238034 DOI: 10.3390/ani13101603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 05/04/2023] [Accepted: 05/08/2023] [Indexed: 05/28/2023] Open
Abstract
Sperm cryopreservation is an effective technique for conserving animal genetic diversity and transmitting superior genetic backgrounds, maintained via a non-invasive sampling and collection of huge quantities of sperm. Nevertheless, cryopreservation in avian species is not commercially viable because of the rooster sperm's susceptibility to damage. This study aims to estimate the impact of dimethylacetamide (DMA) as a cryoprotectant at different levels (3%, 6%, or 9%) on the post-thawed sperm quality, motility, antioxidant-biomarkers, and the expression of anti-freeze related genes. Semen samples were collected twice a week from twelve roosters aged 40 wk, weighing 3400 ± 70 g, and belonging to the Cairo-B2 chicken strain. Fresh semen samples were rapidly appraised, pooled, diluted with two volumes of a basic extender, and divided equally into three groups. The diluted groups were chilled at -20 °C for 7 min, then gently supplemented with 3, 6, or 9% pre-cooled DMA and equilibrated at 5 °C for a further 10 min. Semen pellets were formed by pipetting drops 7 cm above liquid nitrogen (LN2), which were then kept inside cryovials in the LN2. Thawing was performed 2 months later by taking 3-4 pellets of the frozen semen into a glass tube and warming it in a water bath for 8 s at 60 °C. The results showed that 3% DMA increased the proportion of total motile sperm, progressivity, viability, and plasma membrane integrity (%) compared to the 6% and 9% DMA groups. The lipid peroxidation and antioxidant enzyme activity were improved in the 3% group. At the same time, some anti-freeze-related genes' (including ras homolog family member A (RHOA), heat shock protein 70 (HSP70), and small nuclear ribonucleoprotein polypeptide A (SNRPA1)) expressions were upregulated within the 3% DMA group relative to other groups. In conclusion, the 3% DMA group maintained higher post-thawed sperm quality than the other tested groups.
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Affiliation(s)
- Shaimaa K Hamad
- Department of Animal Production, Faculty of Agriculture, Cairo University, Giza 12613, Egypt
- Department of Animal Sciences, The Ohio State University, Columbus, OH 43210, USA
| | - Ahmed M Elomda
- Department of Animal Biotechnology, Animal Production Research Institute, Agriculture Research Center, Giza 12613, Egypt
| | - Yanyan Sun
- Key Laboratory of Animal (Poultry) Genetics Breeding and Reproduction, Ministry of Agriculture and Rural Affairs, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Yunlei Li
- Key Laboratory of Animal (Poultry) Genetics Breeding and Reproduction, Ministry of Agriculture and Rural Affairs, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Yunhe Zong
- Key Laboratory of Animal (Poultry) Genetics Breeding and Reproduction, Ministry of Agriculture and Rural Affairs, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Jilan Chen
- Key Laboratory of Animal (Poultry) Genetics Breeding and Reproduction, Ministry of Agriculture and Rural Affairs, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Ahmed O Abbas
- Department of Animal Production, Faculty of Agriculture, Cairo University, Giza 12613, Egypt
- Department of Animal and Fish Production, College of Agricultural and Food Sciences, King Faisal University, Al-Ahsa 31982, Saudi Arabia
| | - Farid K R Stino
- Department of Animal Production, Faculty of Agriculture, Cairo University, Giza 12613, Egypt
| | - Ali Nazmi
- Department of Animal Sciences, The Ohio State University, Columbus, OH 43210, USA
- Food for Health Discovery Theme, The Ohio State University, Columbus, OH 43013, USA
| | - Gamal M K Mehaisen
- Department of Animal Production, Faculty of Agriculture, Cairo University, Giza 12613, Egypt
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Wang Z, Zhu C, Song Y, Chen X, Zheng J, He L, Liu X, Chen Z. SIRT3 inhibition suppresses hypoxia-inducible factor 1α signaling and alleviates hypoxia-induced apoptosis of type B spermatogonia GC-2 cells. FEBS Open Bio 2022; 13:154-163. [PMID: 36383055 PMCID: PMC9811653 DOI: 10.1002/2211-5463.13523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 11/01/2022] [Accepted: 11/15/2022] [Indexed: 11/18/2022] Open
Abstract
Hypoxia has been reported to be an important factor leading to male infertility, and it has been reported that hypoxia can induce the apoptosis of mouse spermatogenic cells. Sirtuin 3 (SIRT3) has been reported to promote the degradation of hypoxia-inducible factor 1α (HIF-1α), and thus, we hypothesized that SIRT3 may influence hypoxia-induced apoptosis of spermatogonia. In this study, we overexpressed or inhibited SIRT3 in mouse type B spermatogonia GC-2 cells and then subjected the cells to hypoxia or normoxia, before examining hypoxia-responsive gene expression and cell viability. We report that SIRT3 stabilizes hypoxia-inducible factor 1α (HIF-1α) and activates its downstream target gene expression in GC-2 cells. We also show that the SIRT3 inhibitor 3-TYP suppresses HIF-1α target gene expression and alleviates hypoxia-induced apoptosis of GC-2 cells. Our study reveals the critical role and underlying mechanisms of SIRT3 in hypoxia-induced apoptosis of mouse type B spermatogonia GC-2 cells.
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Affiliation(s)
- Zixuan Wang
- University of Chinese Academy of SciencesBeijingChina,State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of HydrobiologyChinese Academy of SciencesWuhanChina
| | - Chunchun Zhu
- University of Chinese Academy of SciencesBeijingChina,State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of HydrobiologyChinese Academy of SciencesWuhanChina
| | - Yangyang Song
- Department of Reproduction, Maternal and Child Health Hospital of Hubei Province, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina,Health Science CenterYangtze UniversityHubeiChina
| | - Xiaoyun Chen
- University of Chinese Academy of SciencesBeijingChina,State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of HydrobiologyChinese Academy of SciencesWuhanChina
| | - Jie Zheng
- Department of Reproduction, Maternal and Child Health Hospital of Hubei Province, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
| | - Lian He
- Department of Reproduction, Maternal and Child Health Hospital of Hubei Province, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
| | - Xing Liu
- University of Chinese Academy of SciencesBeijingChina,State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of HydrobiologyChinese Academy of SciencesWuhanChina
| | - Zhu Chen
- Department of Reproduction, Maternal and Child Health Hospital of Hubei Province, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
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8
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Methyltransferase SMYD3 impairs hypoxia tolerance by augmenting hypoxia signaling independent of its enzymatic activity. J Biol Chem 2022; 298:102633. [PMID: 36273580 PMCID: PMC9692045 DOI: 10.1016/j.jbc.2022.102633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 10/13/2022] [Accepted: 10/14/2022] [Indexed: 11/05/2022] Open
Abstract
Hypoxia-inducible factor (HIF)1α, a main transcriptional regulator of the cellular response to hypoxia, also plays important roles in oxygen homeostasis of aerobic organisms, which is regulated by multiple mechanisms. However, the full cellular response to hypoxia has not been elucidated. In this study, we found that expression of SMYD3, a methyltransferase, augments hypoxia signaling independent of its enzymatic activity. We demonstrated SMYD3 binds to and stabilizes HIF1α via co-immunoprecipitation and Western blot assays, leading to the enhancement of HIF1α transcriptional activity under hypoxia conditions. In addition, the stabilization of HIF1α by SMYD3 is independent of HIF1α hydroxylation by prolyl hydroxylases and the intactness of the von Hippel-Lindau ubiquitin ligase complex. Furthermore, we showed SMYD3 induces reactive oxygen species accumulation and promotes hypoxia-induced cell apoptosis. Consistent with these results, we found smyd3-null zebrafish exhibit higher hypoxia tolerance compared to their wildtype siblings. Together, these findings define a novel role of SMYD3 in affecting hypoxia signaling and demonstrate that SMYD3-mediated HIF1α stabilization augments hypoxia signaling, leading to the impairment of hypoxia tolerance.
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9
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Mehaisen GMK, Elomda AM, Hamad SK, Ghaly MM, Sun Y, Li Y, Zong Y, Chen J, Partyka A, Nazmi A, Abbas AO, Stino FKR. Effect of Dimethylacetamide Concentration on Motility, Quality, Antioxidant Biomarkers, Anti-Freeze Gene Expression, and Fertilizing Ability of Frozen/Thawed Rooster Sperm. Animals (Basel) 2022; 12:ani12202739. [PMID: 36290126 PMCID: PMC9597760 DOI: 10.3390/ani12202739] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2022] [Revised: 10/06/2022] [Accepted: 10/11/2022] [Indexed: 11/07/2022] Open
Abstract
Sperm cryopreservation is of great importance for the poultry industry but still needs to be optimized. The high susceptibility of poultry sperm to cryodamage leads to low fertility rates after cryopreservation. Therefore, the present study aimed at evaluating the effect of including a cryoprotectant, dimethylacetamide (DMA), in the chicken semen freezing extenders at a final concentration of 3%, 6%, or 9% on the post-thawed sperm motility, quality, antioxidant biomarkers, anti-freeze gene expression, and fertilizing ability. Results showed that the total motile sperm, progressivity, and viability were quadratically increased (p < 0.05) in the 6% DMA group. The antioxidant enzyme activity and lipid peroxidation were negatively (p < 0.05) affected by the increase in DMA concentration. Furthermore, some anti-freeze-associated genes such as heat shock protein 70 (HSP70) and ras homolog family member A (RHOA) were linearly and quadratically down-regulated (p < 0.05) with the high concentration of DMA. Finally, the fertility and hatchability rates did not indicate statistical differences between DMA groups. It can be concluded that using the low concentration of 3−6% DMA in the freezing semen extender is preferable to obtain acceptable results in the post-thawed sperm quality and fertility.
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Affiliation(s)
- Gamal M. K. Mehaisen
- Department of Animal Production, Faculty of Agriculture, Cairo University, Giza 12613, Egypt
- Correspondence:
| | - Ahmed M. Elomda
- Department of Animal Biotechnology, Animal Production Research Institute, Agriculture Research Center, Dokki, Giza 12572, Egypt
| | - Shaimaa K. Hamad
- Department of Animal Production, Faculty of Agriculture, Cairo University, Giza 12613, Egypt
- Department of Animal Sciences, The Ohio State University, Columbus, OH 43013, USA
| | - Mona M. Ghaly
- Department of Animal Production, Faculty of Agriculture, Cairo University, Giza 12613, Egypt
| | - Yanyan Sun
- Key Laboratory of Animal (Poultry) Genetics Breeding and Reproduction, Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Yunlei Li
- Key Laboratory of Animal (Poultry) Genetics Breeding and Reproduction, Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Yunhe Zong
- Key Laboratory of Animal (Poultry) Genetics Breeding and Reproduction, Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Jilan Chen
- Key Laboratory of Animal (Poultry) Genetics Breeding and Reproduction, Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Agnieszka Partyka
- Department of Reproduction and Clinic of Farm Animals, Faculty of Veterinary Medicine, Wroclaw University of Environmental and Life Sciences, 50-375 Wroclaw, Poland
| | - Ali Nazmi
- Department of Animal Sciences, The Ohio State University, Columbus, OH 43013, USA
- Food for Health Discovery Theme, The Ohio State University, Columbus, OH 43013, USA
| | - Ahmed O. Abbas
- Department of Animal Production, Faculty of Agriculture, Cairo University, Giza 12613, Egypt
- Department of Animal and Fish Production, College of Agricultural and Food Sciences, King Faisal University, Al-Ahsa 33843, Saudi Arabia
| | - Farid K. R. Stino
- Department of Animal Production, Faculty of Agriculture, Cairo University, Giza 12613, Egypt
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10
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Zhang Y, Yang L, Fang K, Li Q, Xu H, Ren Y, Zi J, Chen CD, Liu S. Dynamic Responses of Chromosome-Binding Protein Complexes to Meiotic Prophase I of Mouse Spermatocyte. J Proteome Res 2022; 21:2715-2726. [PMID: 36223561 DOI: 10.1021/acs.jproteome.2c00414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Meiotic prophase I (MPI) is the most important event in mammalian meiosis. The status of the chromosome-binding proteins (CBPs) and the corresponding complexes and their functions in MPI have not yet been well scrutinized. Quantitative proteomics focused on MPI-related CBPs was accomplished, in which mouse primary spermatocytes in four different subphases of MPI were collected, and chromosome-enriched proteins were extracted and quantitatively identified. According to a stringent criterion, 1136 CBPs in the MPI subphases were quantified. Looking at the dynamic patterns of CBP abundance in response to MPI progression, the patterns were broadly divided into two groups: high abundance in leptotene and zygotene or that in pachytene and diplotene. Furthermore, 152 such CBPs were regarded as 26 CBP complexes with strict filtration, in which some of these complexes were perceived to be MPI-dependent for the first time. These complexes basically belonged to four functional categories, while their dynamic abundance changes following MPI appeared; the functions of DNA replication decreased; and transcription and synapsis were activated in zygotene, pachytene, and diplotene; in contrast to the traditional prediction, condensin activity weakened in pachytene and diplotene. Profiling of protein complexes thus offered convincing evidence of the importance of CBP complexes in MPI.
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Affiliation(s)
- Yuxing Zhang
- BGI-Shenzhen, Shenzhen 518083, China.,College of Life Sciences & Sino-Danish College, University of Chinese Academy of Sciences, Beijing 100049 China
| | | | - Kailun Fang
- Institute of Neuroscience, State Key Laboratory of Neuroscience, CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai 200031 China
| | - Qidan Li
- BGI-Shenzhen, Shenzhen 518083, China
| | - Hongkai Xu
- BGI-Shenzhen, Shenzhen 518083, China.,College of Life Science, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yan Ren
- BGI-Shenzhen, Shenzhen 518083, China.,Experiment Center for Science and Technology, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Jin Zi
- BGI-Shenzhen, Shenzhen 518083, China
| | - Charlie Degui Chen
- State Key Laboratory of Molecular Biology, Shanghai Key Laboratory of Molecular Andrology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Shanghai 200031, China
| | - Siqi Liu
- BGI-Shenzhen, Shenzhen 518083, China
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11
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Ghieh F, Izard V, Poulain M, Fortemps J, Kazdar N, Mandon‐Pepin B, Ferlicot S, Ayoubi JM, Vialard F. Cryptic splice site poisoning and meiotic arrest caused by a homozygous frameshift mutation in
RBMXL2
: A case report. Andrologia 2022; 54:e14595. [DOI: 10.1111/and.14595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 08/29/2022] [Accepted: 09/05/2022] [Indexed: 11/29/2022] Open
Affiliation(s)
- Farah Ghieh
- UVSQ, INRAE, BREED Université Paris‐Saclay Jouy‐en‐Josas France
- École Nationale Vétérinaire d'Alfort, BREED Maisons‐Alfort France
| | - Vincent Izard
- Centre Chirurgical Pierre Cherest Neuilly‐sur‐Seine France
- Département d'urologie Hôpital Foch Suresnes France
| | - Marine Poulain
- UVSQ, INRAE, BREED Université Paris‐Saclay Jouy‐en‐Josas France
- École Nationale Vétérinaire d'Alfort, BREED Maisons‐Alfort France
- Département d'urologie Hôpital Foch Suresnes France
| | - Johanne Fortemps
- Service d'Anatomie Pathologique CHI de Poissy/Saint‐Germain‐en‐Laye Saint‐Germain‐en‐Laye France
| | | | - Béatrice Mandon‐Pepin
- UVSQ, INRAE, BREED Université Paris‐Saclay Jouy‐en‐Josas France
- École Nationale Vétérinaire d'Alfort, BREED Maisons‐Alfort France
| | - Sophie Ferlicot
- Service d'Anatomie Pathologique, AP‐HP Université Paris‐Saclay, Hôpital de Bicêtre Le Kremlin‐Bicêtre France
| | - Jean Marc Ayoubi
- UVSQ, INRAE, BREED Université Paris‐Saclay Jouy‐en‐Josas France
- École Nationale Vétérinaire d'Alfort, BREED Maisons‐Alfort France
- Département d'urologie Hôpital Foch Suresnes France
| | - François Vialard
- UVSQ, INRAE, BREED Université Paris‐Saclay Jouy‐en‐Josas France
- École Nationale Vétérinaire d'Alfort, BREED Maisons‐Alfort France
- Département de Génétique, Laboratoire de Biologie Médicale CHI de Poissy/Saint‐Germain‐en‐Laye Poissy France
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12
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Gutiérrez J, van Wely KHM, Martínez-A C. Hepatitis, testicular degeneration, and ataxia in DIDO3-deficient mice with altered mRNA processing. Cell Biosci 2022; 12:84. [PMID: 35672775 PMCID: PMC9172153 DOI: 10.1186/s13578-022-00804-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 04/26/2022] [Indexed: 11/15/2022] Open
Abstract
Background mRNA processing is an essential step of gene expression; its malfunction can lead to different degrees of physiological disorder from subclinical disease to death. We previously identified Dido1 as a stemness marker and a gene involved in embryonic stem cell differentiation. DIDO3, the largest protein encoded by the Dido1 gene, is necessary for accurate mRNA splicing and correct transcription termination. The deletion of Dido1 exon16, which encodes the carboxy-terminal half of DIDO3, results in early embryonic lethality in mouse. Results We obtained mice bearing a Cre-LoxP conditional version of that deletion and studied the effects of inducing it ubiquitously in adult stages. DIDO3-deficient mice survive the deletion but suffer mild hepatitis, testicular degeneration, and progressive ataxia, in association with systemic alterations in mRNA splicing and transcriptional readthrough. Conclusions These results offer insight into the distinct vulnerabilities in mouse organs following impairment of the mRNA processing machinery, and could aid understanding of human health dependence on accurate mRNA metabolism. Supplementary Information The online version contains supplementary material available at 10.1186/s13578-022-00804-8.
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13
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Mo J, Lu Y, Zhu S, Feng L, Qi W, Chen X, Xie B, Chen B, Lan G, Liang J. Genome-Wide Association Studies, Runs of Homozygosity Analysis, and Copy Number Variation Detection to Identify Reproduction-Related Genes in Bama Xiang Pigs. Front Vet Sci 2022; 9:892815. [PMID: 35711794 PMCID: PMC9195146 DOI: 10.3389/fvets.2022.892815] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 04/22/2022] [Indexed: 11/13/2022] Open
Abstract
Litter size and teat number are economically important traits in the porcine industry. However, the genetic mechanisms influencing these traits remain unknown. In this study, we analyzed the genetic basis of litter size and teat number in Bama Xiang pigs and evaluated the genomic inbreeding coefficients of this breed. We conducted a genome-wide association study to identify runs of homozygosity (ROH), and copy number variation (CNV) using the novel Illumina PorcineSNP50 BeadChip array in Bama Xiang pigs and annotated the related genes in significant single nucleotide polymorphisms and common copy number variation region (CCNVR). We calculated the ROH-based genomic inbreeding coefficients (FROH) and the Spearman coefficient between FROH and reproduction traits. We completed a mixed linear model association analysis to identify the effect of high-frequency copy number variation (HCNVR; over 5%) on Bama Xiang pig reproductive traits using TASSEL software. Across eight chromosomes, we identified 29 significant single nucleotide polymorphisms, and 12 genes were considered important candidates for litter-size traits based on their vital roles in sperm structure, spermatogenesis, sperm function, ovarian or follicular function, and male/female infertility. We identified 9,322 ROHs; the litter-size traits had a significant negative correlation to FROH. A total of 3,317 CNVs, 24 CCNVR, and 50 HCNVR were identified using cnvPartition and PennCNV. Eleven genes related to reproduction were identified in CCNVRs, including seven genes related to the testis and sperm function in CCNVR1 (chr1 from 311585283 to 315307620). Two candidate genes (NEURL1 and SH3PXD2A) related to reproduction traits were identified in HCNVR34. The result suggests that these genes may improve the litter size of Bama Xiang by marker-assisted selection. However, attention should be paid to deter inbreeding in Bama Xiang pigs to conserve their genetic diversity.
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Affiliation(s)
- Jiayuan Mo
- College of Animal Science & Technology, Guangxi University, Nanning, China
| | - Yujie Lu
- College of Animal Science & Technology, Guangxi University, Nanning, China
| | - Siran Zhu
- College of Animal Science & Technology, Guangxi University, Nanning, China
| | - Lingli Feng
- College of Animal Science & Technology, Guangxi University, Nanning, China
| | - Wenjing Qi
- College of Animal Science & Technology, Guangxi University, Nanning, China
| | - Xingfa Chen
- College of Animal Science & Technology, Guangxi University, Nanning, China
| | - Bingkun Xie
- College of Animal Science & Technology, Guangxi University, Nanning, China
- Guangxi Key Laboratory of Livestock Genetic Improvement, Guangxi Institute of Animal Science, Nanning, China
| | - Baojian Chen
- Guangxi Key Laboratory of Livestock Genetic Improvement, Guangxi Institute of Animal Science, Nanning, China
| | - Ganqiu Lan
- College of Animal Science & Technology, Guangxi University, Nanning, China
| | - Jing Liang
- College of Animal Science & Technology, Guangxi University, Nanning, China
- *Correspondence: Jing Liang
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14
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Nissa MU, Pinto N, Mukherjee A, Reddy PJ, Ghosh B, Sun Z, Ghantasala S, Chetanya C, Shenoy SV, Moritz RL, Goswami M, Srivastava S. Organ-Based Proteome and Post-Translational Modification Profiling of a Widely Cultivated Tropical Water Fish, Labeo rohita. J Proteome Res 2021; 21:420-437. [PMID: 34962809 DOI: 10.1021/acs.jproteome.1c00759] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Proteomics has enormous applications in human and animal research. However, proteomic studies in fisheries science are quite scanty particularly for economically important species. Few proteomic studies have been carried out in model fish species, but comprehensive proteomics of aquaculture species are still scarce. This study aimed to perform a comprehensive organ-based protein profiling of important tissue samples for one of the most important aquaculture species,Labeo rohita.Deep proteomic profiling of 17 histologically normal tissues, blood plasma, and embryo provided mass-spectrometric evidence for 8498 proteins at 1% false discovery rate that make up about 26% of the total annotated protein-coding sequences in Rohu. Tissue-wise expression analysis was performed, and the presence of several biologically important proteins was also verified using a targeted proteomic approach. We identified the global post-translational modifications (PTMs) in terms of acetylation (N-terminus and lysine), methylation (N-terminus, lysine, and arginine), and phosphorylation (serine, threonine, and tyrosine) to present a comprehensive proteome resource. An interactive web-based portal has been developed for an overall landscape of protein expression across the studied tissues of Labeo rohita (www.fishprot.org). This draft proteome map of Labeo rohita would advance basic and applied research in aquaculture to meet the most critical challenge of providing food and nutritional security to an increasing world population.
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Affiliation(s)
- Mehar Un Nissa
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Nevil Pinto
- Central Institute of Fisheries Education, Indian Council of Agricultural Research, Versova, Mumbai, Maharashtra 400061, India
| | - Arijit Mukherjee
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | | | - Biplab Ghosh
- Regional Centre for Biotechnology, Faridabad 121001, India
| | - Zhi Sun
- Institute for Systems Biology, Seattle, Washington 98109, United States
| | - Saicharan Ghantasala
- Centre for Research in Nanotechnology and Science, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Chetanya Chetanya
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Sanjyot Vinayak Shenoy
- Department of Mathematics, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Robert L Moritz
- Institute for Systems Biology, Seattle, Washington 98109, United States
| | - Mukunda Goswami
- Central Institute of Fisheries Education, Indian Council of Agricultural Research, Versova, Mumbai, Maharashtra 400061, India
| | - Sanjeeva Srivastava
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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15
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Wang W, Peng M, Yuan H, Liu C, Zhang Y, Fang Y, Su Y, Zhang X, Zhang H, Tang Y, Zhao K. Studying the mechanism of sperm DNA damage caused by folate deficiency. J Cell Mol Med 2021; 26:776-788. [PMID: 34953021 PMCID: PMC8817123 DOI: 10.1111/jcmm.17119] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Revised: 10/25/2021] [Accepted: 11/08/2021] [Indexed: 12/27/2022] Open
Abstract
Sperm DNA injury is one of the common causes of male infertility. Folic acid deficiency would increase the methylation level of the important genes, including those involved in DNA double-strand break (DSB) repair pathway. In the early stages, we analysed the correlation between seminal plasma folic acid concentration and semen parameters in 157 infertility patients and 91 sperm donor volunteers, and found that there was a significant negative correlation between seminal folic acid concentration and sperm DNA Fragmentation Index (DFI; r = -0.495, p < 0.01). Then through reduced representation bisulphite sequencing, global DNA methylation of sperm of patients in the low folic acid group and the high folic acid group was analysed, it was found that the methylation level in Rad54 promoter region increased in the folic acid deficiency group compared with the normal folic acid group. Meanwhile, the results of animal model and spermatocyte line (GC-2) also found that folic acid deficiency can increase the methylation level in Rad54 promoter region, increased sperm DFI in mice, increased the expression of γ-H2AX, that is, DNA injury marker protein, and increased sensitivity of GC-2 to external damage and stimulation. The study indicates that the expression of Rad54 is downregulated by folic acid deficiency via DNA methylation. This may be one of the mechanisms of sperm DNA damage caused by folate deficiency.
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Affiliation(s)
- Wei Wang
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Meilin Peng
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hongfang Yuan
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chunyan Liu
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yuan Zhang
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yiwei Fang
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yufang Su
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xinzong Zhang
- NHC Key Laboratory of Male Reproduction and Genetics, Guangdong Provincial Reproductive Science Institute(Guangdong Provincial Fertility Hospital), Guangdong, China
| | - Huiping Zhang
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yunge Tang
- NHC Key Laboratory of Male Reproduction and Genetics, Guangdong Provincial Reproductive Science Institute(Guangdong Provincial Fertility Hospital), Guangdong, China
| | - Kai Zhao
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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16
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Liu Y, Tian Y, Wang LX, Fan T, Zhang J, Chen MX, Liu YG. Phylogeny and conservation of plant U2A/U2A', a core splicing component in U2 spliceosomal complex. PLANTA 2021; 255:25. [PMID: 34940917 DOI: 10.1007/s00425-021-03752-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 10/09/2021] [Indexed: 06/14/2023]
Abstract
This study systematically identifies 112 U2A genes from 80 plant species by combinatory bioinformatics analysis, which is important for understanding their phylogenetic history, expression profiles and for predicting specific functions. In eukaryotes, a pre-mRNA can generate multiple transcripts by removing certain introns and joining corresponding exons, thus greatly expanding the transcriptome and proteome diversity. The spliceosome is a mega-Dalton ribonucleoprotein (RNP) complex that is essential for the process of splicing. In spliceosome components, the U2 small nuclear ribonucleoprotein (U2 snRNP) forms the pre-spliceosome by association with the branch site. An essential component that promotes U2 snRNP assembly, named U2A, has been extensively identified in humans, yeast and nematodes. However, studies examining U2A genes in plants are scarce. In this study, we performed a comprehensive analysis and identified a total of 112 U2A genes from 80 plant species representing dicots, monocots, mosses and algae. Comparisons of the gene structures, protein domains, and expression patterns of 112 U2A genes indicated that the conserved functions were likely retained by plant U2A genes and important for responses to internal and external stimuli. In addition, analysis of alternative transcripts and splice sites of U2A genes indicated that the fifth intron contained a conserved alternative splicing event that might be important for its molecular function. Our work provides a general understanding of this splicing factor family in terms of genes and proteins, and it will serve as a fundamental resource that will contribute to further mechanistic characterization in plants.
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Affiliation(s)
- Yue Liu
- State Key Laboratory of Crop Biology, College of Life Science, Shandong Agricultural University, Taian, Shandong, China
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing, China
- Shenzhen Institutes of Advanced Technology, Shenzhen Institute of Synthetic Biology, Chinese Academy of Sciences, Shenzhen, 518055, People's Republic of China
| | - Yuan Tian
- State Key Laboratory of Crop Biology, College of Life Science, Shandong Agricultural University, Taian, Shandong, China
| | - Lan-Xiang Wang
- Guangdong Provincial Key Laboratory of Seed and Seedling Health Management Technology, Guangdong Province, Shenzhen Noposion Agrochemical Co. Ltd, Shenzhen, 518102, China
- Shenzhen Institutes of Advanced Technology, Shenzhen Institute of Synthetic Biology, Chinese Academy of Sciences, Shenzhen, 518055, People's Republic of China
| | - Tao Fan
- State Key Laboratory of Crop Biology, College of Life Science, Shandong Agricultural University, Taian, Shandong, China
| | - Jianhua Zhang
- Department of Biology, Hong Kong Baptist University, and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Mo-Xian Chen
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing, China.
- Guangdong Provincial Key Laboratory of Seed and Seedling Health Management Technology, Guangdong Province, Shenzhen Noposion Agrochemical Co. Ltd, Shenzhen, 518102, China.
- Shenzhen Institutes of Advanced Technology, Shenzhen Institute of Synthetic Biology, Chinese Academy of Sciences, Shenzhen, 518055, People's Republic of China.
| | - Ying-Gao Liu
- State Key Laboratory of Crop Biology, College of Life Science, Shandong Agricultural University, Taian, Shandong, China.
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17
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Abstract
The tumor suppressor p53 prevents tumorigenesis, while inactivation of p53 promotes cancer development and drug resistance. Here, we identify that a long noncoding RNA, the RNA component of mitochondrial RNA-processing endoribonuclease (RMRP), promotes growth and proliferation of colorectal cancer cells by inhibiting p53 activity. Mechanistically, RMRP retains SNRPA1 in the nucleus, thus preventing its lysosomal degradation. The nuclear SNRPA1 then prompts MDM2-mediated p53 ubiquitination and degradation. Remarkably, RMRP expression is induced by poly (ADP-ribose) polymerase (PARP) inhibitors, a group of targeted anticancer drugs, through the transcription factor C/EBPβ. Targeting RMRP significantly enhances sensitivity of colorectal cancer cells to PARP inhibition by reactivating p53. Our study provides a possible mechanism underling tumor resistance to PARP inhibitors. p53 inactivation is highly associated with tumorigenesis and drug resistance. Here, we identify a long noncoding RNA, the RNA component of mitochondrial RNA-processing endoribonuclease (RMRP), as an inhibitor of p53. RMRP is overexpressed and associated with an unfavorable prognosis in colorectal cancer. Ectopic RMRP suppresses p53 activity by promoting MDM2-induced p53 ubiquitination and degradation, while depletion of RMRP activates the p53 pathway. RMRP also promotes colorectal cancer growth and proliferation in a p53-dependent fashion in vitro and in vivo. This anti-p53 action of RMRP is executed through an identified partner protein, SNRPA1. RMRP can interact with SNRPA1 and sequester it in the nucleus, consequently blocking its lysosomal proteolysis via chaperone-mediated autophagy. The nuclear SNRPA1 then interacts with p53 and enhances MDM2-induced proteasomal degradation of p53. Remarkably, ablation of SNRPA1 completely abrogates RMRP regulation of p53 and tumor cell growth, indicating that SNRPA1 is indispensable for the anti-p53 function of RMRP. Interestingly and significantly, poly (ADP-ribose) polymerase (PARP) inhibitors induce RMRP expression through the transcription factor C/EBPβ, and RMRP confers tumor resistance to PARP inhibition by preventing p53 activation. Altogether, our study demonstrates that RMRP plays an oncogenic role by inactivating p53 via SNRPA1 in colorectal cancer.
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18
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Oyewopo A, Adeleke O, Johnson O, Akingbade A. Quercetin upregulates CREM gene expression in cyanide-induced endocrine dysfunction. Heliyon 2021; 7:e06901. [PMID: 34027151 PMCID: PMC8121865 DOI: 10.1016/j.heliyon.2021.e06901] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Revised: 03/13/2021] [Accepted: 04/20/2021] [Indexed: 11/28/2022] Open
Abstract
Cyanide is among the ubiquitous chemicals that humans are usually exposed to and it is well documented that cyanide induces infertility in humans and experimental rodents. However, the pathogenesis remains unknown. Likewise, quercetin is an important nutraceutical that detoxifies reactive oxygen species, but its effects on testicular damage is not clear. The present study investigated the role of nutraceutical, quercetin on cyanide-induced testicular toxicity and probable involvement of cAMP-response-element modulator (CREM) which is a transcription factor necessary for the process of spermatogenesis. Thus, this work hypothesized that quercetin will mitigate endocrine dysfunction induced by cyanide. Seventy-two adult male Wistar rats were divided into seven groups (A to G). Groups A, B, C, F and G comprised of eight (8) rats per group while groups D and E comprised of sixteen (16) rats per group. Group A was designated as control while Groups B and C were given 0.5 and 1 mg/kg of cyanide respectively for 56 days. Group D and E received 0.5 and 1 mg/kg body weight cyanide respectively for 30 days. At day 30, eight animals were sacrificed from Group D and E and the remaining eight (8) rats were subdivided into sub-groups (D1 and E1) and were given 20 and 40 mg/kg of quercetin respectively for twenty-six (26) days. Group F and G were given concurrent administration of cyanide and quercetin at a dose of 0.5 + 20 mg/kg and 1 + 40 mg/kg respectively for 56 days. Body and testicular weight were significantly reduced in cyanide treated groups while quercetin modulates the reduction. Significant down-regulation of CREM gene and reduction in serum level of follicle stimulating hormone (FSH), Luteinizing hormone (LH), testosterone, glutathione peroxidase (GPx) and zinc in cyanide-treated groups, whereas administration of quercetin concomitantly with cyanide exposure or post-treated significantly reversed the alterations.
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Affiliation(s)
- Adeoye Oyewopo
- Department of Anatomy, College of Health Sciences, University of Ilorin, Ilorin, Kwara State, Nigeria
| | - Opeyemi Adeleke
- Department of Anatomy, College of Health Sciences, Osun State University, Osogbo, Osun State, Nigeria
| | - Olawumi Johnson
- Department of Anatomy, University of Medical Sciences, Ondo City, Ondo State, Nigeria
| | - Adebanji Akingbade
- Department of Anatomy, College of Medicine and Health Sciences, Ekiti State University, Ekiti State, Nigeria
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19
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Zheng Q, Chen X, Qiao C, Wang M, Chen W, Luan X, Yan Y, Shen C, Fang J, Hu X, Zheng B, Wu Y, Yu J. Somatic CG6015 mediates cyst stem cell maintenance and germline stem cell differentiation via EGFR signaling in Drosophila testes. Cell Death Discov 2021; 7:68. [PMID: 33824283 PMCID: PMC8024382 DOI: 10.1038/s41420-021-00452-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 02/21/2021] [Accepted: 03/18/2021] [Indexed: 11/09/2022] Open
Abstract
Stem cell niche is regulated by intrinsic and extrinsic factors. In the Drosophila testis, cyst stem cells (CySCs) support the differentiation of germline stem cells (GSCs). However, the underlying mechanisms remain unclear. In this study, we found that somatic CG6015 is required for CySC maintenance and GSC differentiation in a Drosophila model. Knockdown of CG6015 in CySCs caused aberrant activation of dpERK in undifferentiated germ cells in the Drosophila testis, and disruption of key downstream targets of EGFR signaling (Dsor1 and rl) in CySCs results in a phenotype resembling that of CG6015 knockdown. CG6015, Dsor1, and rl are essential for the survival of Drosophila cell line Schneider 2 (S2) cells. Our data showed that somatic CG6015 regulates CySC maintenance and GSC differentiation via EGFR signaling, and inhibits aberrant activation of germline dpERK signals. These findings indicate regulatory mechanisms of stem cell niche homeostasis in the Drosophila testis.
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Affiliation(s)
- Qianwen Zheng
- Department of Gynecology, the Affiliated Hospital of Jiangsu University, Jiangsu University, 212001, Zhenjiang, Jiangsu, P.R. China
| | - Xia Chen
- Department of Gynecology, the Affiliated Hospital of Jiangsu University, Jiangsu University, 212001, Zhenjiang, Jiangsu, P.R. China
| | - Chen Qiao
- Department of Clinical Pharmacy, the Affiliated Hospital of Jiangsu University, Jiangsu University, 212001, Zhenjiang, Jiangsu, P.R. China
| | - Min Wang
- Department of Gynecology, the Affiliated Hospital of Jiangsu University, Jiangsu University, 212001, Zhenjiang, Jiangsu, P.R. China
| | - Wanyin Chen
- Department of Gynecology, the Affiliated Hospital of Jiangsu University, Jiangsu University, 212001, Zhenjiang, Jiangsu, P.R. China
| | - Xiaojin Luan
- Department of Gynecology, the Affiliated Hospital of Jiangsu University, Jiangsu University, 212001, Zhenjiang, Jiangsu, P.R. China
| | - Yidan Yan
- Department of Gynecology, the Affiliated Hospital of Jiangsu University, Jiangsu University, 212001, Zhenjiang, Jiangsu, P.R. China
| | - Cong Shen
- State Key Laboratory of Reproductive Medicine, Center for Reproduction and Genetics, Suzhou Municipal Hospital, The Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, 215002, Suzhou, Jiangsu, P.R. China
| | - Jie Fang
- Department of Gynecology, the Affiliated Hospital of Jiangsu University, Jiangsu University, 212001, Zhenjiang, Jiangsu, P.R. China
| | - Xing Hu
- Department of Gynecology, the Affiliated Hospital of Jiangsu University, Jiangsu University, 212001, Zhenjiang, Jiangsu, P.R. China
| | - Bo Zheng
- State Key Laboratory of Reproductive Medicine, Center for Reproduction and Genetics, Suzhou Municipal Hospital, The Affiliated Suzhou Hospital of Nanjing Medical University, Gusu School, Nanjing Medical University, 215002, Suzhou, Jiangsu, P.R. China.
| | - Yibo Wu
- Human Reproductive and Genetic Center, Affiliated Hospital of Jiangnan University, 214062, Wuxi, Jiangsu, P.R. China.
| | - Jun Yu
- Department of Gynecology, the Affiliated Hospital of Jiangsu University, Jiangsu University, 212001, Zhenjiang, Jiangsu, P.R. China.
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20
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Naro C, Cesari E, Sette C. Splicing regulation in brain and testis: common themes for highly specialized organs. Cell Cycle 2021; 20:480-489. [PMID: 33632061 PMCID: PMC8018374 DOI: 10.1080/15384101.2021.1889187] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 01/17/2021] [Accepted: 02/07/2021] [Indexed: 12/26/2022] Open
Abstract
Expansion of the coding and regulatory capabilities of eukaryotic transcriptomes by alternative splicing represents one of the evolutionary forces underlying the increased structural complexity of metazoans. Brain and testes stand out as the organs that mostly exploit the potential of alternative splicing, thereby expressing the largest repertoire of splice variants. Herein, we will review organ-specific as well as common mechanisms underlying the high transcriptome complexity of these organs and discuss the impact exerted by this widespread alternative splicing regulation on the functionality and differentiation of brain and testicular cells.
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Affiliation(s)
- Chiara Naro
- Department of Neuroscience, Section of Human Anatomy, Catholic University of the Sacred Heart, Rome, Italy
- Organoids Facility, IRCCS Fondazione Policlinico Universitario Agostino Gemelli, Rome, Italy
| | - Eleonora Cesari
- Department of Neuroscience, Section of Human Anatomy, Catholic University of the Sacred Heart, Rome, Italy
- Organoids Facility, IRCCS Fondazione Policlinico Universitario Agostino Gemelli, Rome, Italy
| | - Claudio Sette
- Department of Neuroscience, Section of Human Anatomy, Catholic University of the Sacred Heart, Rome, Italy
- Laboratory of Neuroembryology, IRCCS Fondazione Santa Lucia, Rome, Italy
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21
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Nandi A, Chowdhuri DK. Cadmium mediated redox modulation in germline stem cells homeostasis affects reproductive health of Drosophila males. JOURNAL OF HAZARDOUS MATERIALS 2021; 402:123737. [PMID: 33254766 DOI: 10.1016/j.jhazmat.2020.123737] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Revised: 08/07/2020] [Accepted: 08/14/2020] [Indexed: 06/12/2023]
Abstract
Maintenance of male germline stem cells (GSCs) homeostasis is crucial for successful reproductive life of adults. New insights gained on dysfunction in stem cell maintenance could be the basis of stem cell dependent ailment during adulthood. Cadmium (Cd), a reported male reproductive toxicant, has been explored inadequately for its impact on male GSCs maintenance. The present study, therefore, has been aimed to evaluate the adverse effect of Cd on the homeostasis of GSCs by using Drosophila testis as an in vivo model. Following developmental exposure of environmentally relevant concentrations of Cd (5.0, 10.0 and 20.0 μg/mL) to Drosophila, we showed that a significantly increased level of reactive oxygen species (ROS) at 20.0 μg/mL of Cd resulted in alteration of GSCs number accompanied by inappropriate differentiation leading to reduced sperm number and eventually poor reproductive performance in exposed organism. Rescuing effect was evident by overexpressing sod in the early germ cell stage. The study suggests that an alteration in GSCs homeostasis due to redox imbalance plays a pivotal role in Cd induced failure in male fertility. The study further advocates for the use of Drosophila as an alternative animal model for in vivo evaluation of male GSCs toxicity with minimal ethical concern.
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Affiliation(s)
- Abik Nandi
- Embryotoxicology Laboratory, Environmental Toxicology Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow 226 001, Uttar Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, Uttar Pradesh, India
| | - Debapratim Kar Chowdhuri
- Embryotoxicology Laboratory, Environmental Toxicology Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, Lucknow 226 001, Uttar Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, Uttar Pradesh, India.
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22
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Yuan P, Ling L, Gao X, Sun T, Miao J, Yuan X, Liu J, Wang Z, Liu B. Identification of RNA-binding protein SNRPA1 for prognosis in prostate cancer. Aging (Albany NY) 2021; 13:2895-2911. [PMID: 33460399 PMCID: PMC7880319 DOI: 10.18632/aging.202387] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 10/20/2020] [Indexed: 02/06/2023]
Abstract
Prostate cancer is one of the deadliest cancers in men. RNA-binding proteins play a critical role in human cancers; however, whether they have a significant effect on the prognosis of prostate cancer has yet to be elucidated. In the present study, we performed a comprehensive analysis of RNA sequencing and clinical data from the Cancer Genome Atlas dataset and obtained differentially expressed RNA-binding proteins between prostate cancer and benign tissues. We constructed a protein-protein interaction network and Cox regression analyses were conducted to identify prognostic hub RNA-binding proteins. SNRPA1 was associated with the highest risk of poor prognosis and was therefore selected for further analysis. SNRPA1 expression was positively correlated with Gleason score and pathological TNM stage in prostate cancer patients. Furthermore, the expression profile of SNRPA1 was validated using the Oncomine, Human Protein Atlas, and Cancer Cell Line Encyclopedia databases. Meanwhile, the prognostic profile of SNRPA1 was successfully verified in GSE70769. Additionally, the results of molecular experiments revealed the proliferative role of SNRPA1 in prostate cancer cells. In summary, our findings evidenced a relationship between RNA-binding proteins and prostate cancer and indicated the prognostic significance of SNRPA1 in prostate cancer.
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Affiliation(s)
- Penghui Yuan
- Department of Urology Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei, China
| | - Le Ling
- Department of Urology Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei, China
| | - Xintao Gao
- Department of Urology Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei, China
| | - Taotao Sun
- Department of Urology Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei, China
| | - Jianping Miao
- Department of Geriatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Xianglin Yuan
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei, China
| | - Jihong Liu
- Department of Urology Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei, China
| | - Zhihua Wang
- Department of Urology Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei, China
| | - Bo Liu
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei, China
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23
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Chang WF, Peng M, Hsu J, Xu J, Cho HC, Hsieh-Li HM, Liu JL, Lu CH, Sung LY. Effects of Survival Motor Neuron Protein on Germ Cell Development in Mouse and Human. Int J Mol Sci 2021; 22:ijms22020661. [PMID: 33440839 PMCID: PMC7827477 DOI: 10.3390/ijms22020661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 12/29/2020] [Accepted: 01/03/2021] [Indexed: 11/24/2022] Open
Abstract
Survival motor neuron (SMN) is ubiquitously expressed in many cell types and its encoding gene, survival motor neuron 1 gene (SMN1), is highly conserved in various species. SMN is involved in the assembly of RNA spliceosomes, which are important for pre-mRNA splicing. A severe neurogenic disease, spinal muscular atrophy (SMA), is caused by the loss or mutation of SMN1 that specifically occurred in humans. We previously reported that SMN plays roles in stem cell biology in addition to its roles in neuron development. In this study, we investigated whether SMN can improve the propagation of spermatogonia stem cells (SSCs) and facilitate the spermatogenesis process. In in vitro culture, SSCs obtained from SMA model mice showed decreased growth rate accompanied by significantly reduced expression of spermatogonia marker promyelocytic leukemia zinc finger (PLZF) compared to those from heterozygous and wild-type littermates; whereas SMN overexpressed SSCs showed enhanced cell proliferation and improved potency. In vivo, the superior ability of homing and complete performance in differentiating progeny was shown in SMN overexpressed SSCs in host seminiferous tubule of transplant experiments compared to control groups. To gain insights into the roles of SMN in clinical infertility, we derived human induced pluripotent stem cells (hiPSCs) from azoospermia patients (AZ-hiPSCs) and from healthy control (ct-hiPSCs). Despite the otherwise comparable levels of hallmark iPCS markers, lower expression level of SMN1 was found in AZ-hiPSCs compared with control hiPSCs during in vitro primordial germ cell like cells (PGCLCs) differentiation. On the other hand, overexpressing hSMN1 in AZ-hiPSCs led to increased level of pluripotent markers such as OCT4 and KLF4 during PGCLC differentiation. Our work reveal novel roles of SMN in mammalian spermatogenesis and suggest new therapeutic targets for azoospermia treatment.
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Affiliation(s)
- Wei-Fang Chang
- Institute of Biotechnology, National Taiwan University, Taipei 106, Taiwan; (W.-F.C.); (M.P.); (J.H.)
| | - Min Peng
- Institute of Biotechnology, National Taiwan University, Taipei 106, Taiwan; (W.-F.C.); (M.P.); (J.H.)
| | - Jing Hsu
- Institute of Biotechnology, National Taiwan University, Taipei 106, Taiwan; (W.-F.C.); (M.P.); (J.H.)
| | - Jie Xu
- Center for Advanced Models for Translational Sciences and Therapeutics, University of Michigan Medical Center, Ann Arbor, MI 48109, USA;
| | - Huan-Chieh Cho
- Animal Resource Center, National Taiwan University, Taipei 106, Taiwan;
| | - Hsiu-Mei Hsieh-Li
- Department of Life Science, National Taiwan Normal University, Taipei 116, Taiwan;
| | - Ji-Long Liu
- MRC Functional Genomics Unit, Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford OX1 3PT, UK;
- School of Life Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Chung-Hao Lu
- Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Taipei 105, Taiwan
- Correspondence: (C.-H.L.); (L.-Y.S.)
| | - Li-Ying Sung
- Institute of Biotechnology, National Taiwan University, Taipei 106, Taiwan; (W.-F.C.); (M.P.); (J.H.)
- Animal Resource Center, National Taiwan University, Taipei 106, Taiwan;
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei 115, Taiwan
- Correspondence: (C.-H.L.); (L.-Y.S.)
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24
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Ding X, Schimenti JC. Strategies to Identify Genetic Variants Causing Infertility. Trends Mol Med 2021; 27:792-806. [PMID: 33431240 DOI: 10.1016/j.molmed.2020.12.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2020] [Revised: 11/26/2020] [Accepted: 12/11/2020] [Indexed: 12/19/2022]
Abstract
Genetic causes are thought to underlie about half of infertility cases, but understanding the genetic bases has been a major challenge. Modern genomics tools allow more sophisticated exploration of genetic causes of infertility through population, family-based, and individual studies. Nevertheless, potential therapies based on genetic diagnostics will be limited until there is certainty regarding the causality of genetic variants identified in an individual. Genome modulation and editing technologies have revolutionized our ability to functionally test such variants, and also provide a potential means for clinical correction of infertility variants. This review addresses strategies being used to identify causative variants of infertility.
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Affiliation(s)
- Xinbao Ding
- Cornell University, College of Veterinary Medicine, Department of Biomedical Sciences, Ithaca, NY 14853, USA
| | - John C Schimenti
- Cornell University, College of Veterinary Medicine, Department of Biomedical Sciences, Ithaca, NY 14853, USA.
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25
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Liang J, Zheng Y, Zeng W, Chen L, Yang S, Du P, Wang Y, Yu X, Zhang X. Comparison of proteomic profiles from the testicular tissue of males with impaired and normal spermatogenesis. Syst Biol Reprod Med 2020; 67:127-136. [PMID: 33375868 DOI: 10.1080/19396368.2020.1846822] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
In this study, we aimed to explore the potential differences in proteomic profiles from the testicular tissue of azoospermatic men with impaired spermatogenesis and normal spermatogenesis. Isobaric tags for relative and absolute quantitation (iTRAQ) labeled technology and LC-MS/MS technology were used to identify differentially expressed proteins. Potential functions of differentially expressed proteins were predicted using gene ontology (GO) and the Kyoto encyclopedia of genes and genomes (KEGG). Immunohistochemistry (IHC) and western blot (WB) were used to verify the differentially expressed proteins. A protein-protein interaction (PPI) network was built to outline the regulatory network of differentially expressed proteins. A total of 3,945 proteins were identified in men with normal and impaired spermatogenesis. Of these, 116 proteins were differentially expressed in men with impaired spermatogenesis: 39 were upregulated and 77 were downregulated. Furthermore, we found that these differentially expressed proteins were mainly involved in the cellular component, which may be mainly associated with the spliceosome, ribosome, and thyroid hormone synthesis signaling pathways. The spliceosome- and ribosome-associated proteins YBX1, FBL, and HNRNPU were downregulated. And the proteomic profile of testicular tissue in men with impaired spermatogenesis is different from that of men with normal spermatogenesis. For this reason, differentially expressed proteins such as YBX1, FBL and HNRNPU might be involved in the pathology of spermatogenesis dysfunction.Abbreviations: iTRAQ: Isobaric tags for relative and absolute quantitation;GO: Gene ontology; KEGG: Kyoto encyclopedia of genes and genomes; IHC: Immunohistochemistry; WB: Western blot; PPI: Protein-protein interaction; ICSI: Intracytoplasmic sperm injection; BP: Biological process; CC: Cellular components; MF: Molecular function; snoRNA: Small nucleolar RNA; snRNA: Small nuclear RNA; LC-MS/MS: Liquid chromatography and MS/MS analysis; BSA: Bovine serum albumin; SD: Spermatogenic dysfunction; micro-TESE: Testicular microscopic sperm extraction.
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Affiliation(s)
- Jiaying Liang
- Reproductive Medical Center, Guangdong Women and Children Hospital, Guangzhou, China
| | - Yichun Zheng
- Reproductive Medical Center, Guangdong Women and Children Hospital, Guangzhou, China
| | - Weihong Zeng
- Children Inherit Metabolism and Endocrine Department, Guangdong Women and Children Hospital, Guangzhou, China
| | - Liuqing Chen
- Reproductive Medical Center, Guangdong Women and Children Hospital, Guangzhou, China
| | - Shaofen Yang
- Reproductive Medical Center, Guangdong Women and Children Hospital, Guangzhou, China
| | - Peng Du
- Reproductive Medical Center, Guangdong Women and Children Hospital, Guangzhou, China
| | - Yujiang Wang
- Reproductive Medical Center, Guangdong Women and Children Hospital, Guangzhou, China
| | - Xingsu Yu
- Reproductive Medical Center, Guangdong Women and Children Hospital, Guangzhou, China
| | - Xiqian Zhang
- Reproductive Medical Center, Guangdong Women and Children Hospital, Guangzhou, China
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26
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Selvaraju S, Swathi D, Ramya L, Lavanya M, Archana SS, Sivaram M. Orchestrating the expression levels of sperm mRNAs reveals CCDC174 as an important determinant of semen quality and bull fertility. Syst Biol Reprod Med 2020; 67:89-101. [PMID: 33190538 DOI: 10.1080/19396368.2020.1836286] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Bulls with acceptable semen quality vary in actual field fertility and this can be elucidated by studying the expression levels of mRNAs in the sperm. The present study aimed at assessing the variations in the sperm gene expression levels of PRM1, CCDC174, RPL36A, TMCO2, SWI5 and OIT3 in bulls differing in fertility status. Frozen semen samples from Holstein-Friesian bulls were classified into high-fertile (n = 8, average field conception rate = 46.1 ± 0.51, p < 0.001) and sub-fertile (n = 7, average field conception rate = 39.4 ± 0.69) groups. In the post-thaw semen samples, sperm kinematics, structural and functional membrane integrities, mitochondrial membrane potential and chromatin distribution were analyzed. The sperm total RNA was subjected to gene expression studies by Real-Time PCR. Multivariate regression analysis was performed using gene expression levels and conception rates. The sperm functional attributes did not differ significantly between the groups. The relative mRNA levels (fold change) of CCDC174 (6.20), RPL36A (4.66), SWI5 (1.86) and OIT3 (1.53) were higher in high-fertile bulls. Further, the expression level of the CCDC174 gene was significantly (p = 0.02) up-regulated in high-fertile bulls. The fertility prediction multivariate model with genes, CCDC174, RPL36A, TMCO2 and OIT3 had the maximum coefficient of determination (R2 = 0.68) with the field conception rate. This model had 93.3% bull fertility prediction accuracy with 100% sensitivity and 87.5% specificity. The study suggests that the expression level of CCDC174 can be used as a potential marker for assessing bull fertility.
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Affiliation(s)
- Sellappan Selvaraju
- Reproductive Physiology Laboratory, Animal Physiology Division, ICAR-National Institute of Animal Nutrition and Physiology, Adugodi, Bengaluru-560030, India
| | - Divakar Swathi
- Reproductive Physiology Laboratory, Animal Physiology Division, ICAR-National Institute of Animal Nutrition and Physiology, Adugodi, Bengaluru-560030, India
| | - Laxman Ramya
- Reproductive Physiology Laboratory, Animal Physiology Division, ICAR-National Institute of Animal Nutrition and Physiology, Adugodi, Bengaluru-560030, India
| | - Maharajan Lavanya
- Reproductive Physiology Laboratory, Animal Physiology Division, ICAR-National Institute of Animal Nutrition and Physiology, Adugodi, Bengaluru-560030, India.,Division of Animal Reproduction, Indian Veterinary Research Institute, Izatnagar, Bareilly-243122, India
| | - Santhanahalli Siddalingappa Archana
- Reproductive Physiology Laboratory, Animal Physiology Division, ICAR-National Institute of Animal Nutrition and Physiology, Adugodi, Bengaluru-560030, India
| | - Muniandy Sivaram
- Southern Regional Station, ICAR-National Dairy Research Institute, Bengaluru-560030, India
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27
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Prakash MA, Kumaresan A, Sinha MK, Kamaraj E, Mohanty TK, Datta TK, Morrell JM. RNA-Seq analysis reveals functionally relevant coding and non-coding RNAs in crossbred bull spermatozoa. Anim Reprod Sci 2020; 222:106621. [PMID: 33069132 PMCID: PMC7607363 DOI: 10.1016/j.anireprosci.2020.106621] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 10/02/2020] [Accepted: 10/03/2020] [Indexed: 12/12/2022]
Abstract
RNA-Seq analysis was done to characterize the transcriptome of crossbred bull spermatozoa. Among the 13,814 transcripts detected, 431 had FPKM > 1 and 13,673 had FPKM > 0 or < 1. Coding and non-coding RNAs account for 13,145 (95.15%) and 152 (1.1%), respectively. Sperm transcripts were mainly related to ribosome, oxidative phosphorylation and spliceosome pathways. qPCR analysis showed individual variations in transcriptional abundance of selected genes.
Sperm, which are believed to be transcriptionally and translationally inactive, synthesize RNA and proteins before there is gradual disappearance of the ribosome during chromatin compaction. Sperm transfer several functionally relevant transcripts to the oocyte, controlling maternal-zygotic transition and embryonic development. The present study was undertaken to profile and analyze sperm transcripts comprehensively using Next Generation Ribonucleic acid sequencing technology in Holstein Friesian x Tharparkar crossbred bulls. The results from global transcriptomic profiling revealed transcripts for 13,814 genes; of which 431 transcripts were expressed with >1 FPKM and 13,383 transcripts were expressed with >0 or <1 FPKM. The abundant mRNA transcripts of crossbred bull sperm were PRM1 and HMGB4. Gene ontology of transcripts with>1 FPKM revealed there was a major involvement in the structural constituent of ribosomes and translation. Results from pathway enrichment indicated the connection between ribosome, oxidative phosphorylation and spliceosome pathways and the transcripts of crossbred bull spermatozoa. The transcriptional abundance of selected genes, validated using RT-qPCR, indicated significant variations between bulls. Collectively, it may be inferred that the transcripts in crossbred bull sperm were heavily implicated in functions such as the structural constituent of ribosomes and translation, and pathways such as ribosome, oxidative phosphorylation and spliceosome. Further studies using larger sample sizes are required to understand the possible implications of transcriptomic variations on semen quality and fertility.
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Affiliation(s)
- Mani Arul Prakash
- Theriogenology Laboratory, Southern Regional Station of ICAR-National Dairy Research Institute, Adugodi, Bengaluru, 560030 Karnataka, India
| | - Arumugam Kumaresan
- Theriogenology Laboratory, Southern Regional Station of ICAR-National Dairy Research Institute, Adugodi, Bengaluru, 560030 Karnataka, India.
| | - Manish Kumar Sinha
- Theriogenology Laboratory, Southern Regional Station of ICAR-National Dairy Research Institute, Adugodi, Bengaluru, 560030 Karnataka, India
| | - Elango Kamaraj
- Theriogenology Laboratory, Southern Regional Station of ICAR-National Dairy Research Institute, Adugodi, Bengaluru, 560030 Karnataka, India
| | - Tushar Kumar Mohanty
- Animal Reproduction, Gynaecology and Obstetrics, National Dairy Research Institute, Karnal, 132001 Haryana, India
| | - Tirtha Kumar Datta
- Animal Biotechnology Centre, National Dairy Research Institute, Karnal, 132001 Haryana, India
| | - Jane M Morrell
- Clinical Sciences, Swedish University of Agricultural Sciences, 750 07 Uppsala, Sweden
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28
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Huang YL, Zhang PF, Fu Q, He WT, Xiao K, Zhang M. Novel targets identified by integrated proteomic and phosphoproteomic analysis in spermatogenesis of swamp buffalo (Bubalus bubalis). Sci Rep 2020; 10:15659. [PMID: 32973212 PMCID: PMC7515895 DOI: 10.1038/s41598-020-72353-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Accepted: 08/28/2020] [Indexed: 02/04/2023] Open
Abstract
To understand mechanisms of spermatogenesis, the proteome and the phosphoproteome in prepubertal and pubertal swamp buffalo (Bubalus bubalis) testes were analyzed using tandem mass tag (TMT) coupled with liquid chromatography-tandem mass spectrometry (LC–MS/MS). In prepubertal testes, 80 proteins were overexpressed, 148 proteins were underexpressed, and 139 and 142 protein sites had higher and lower phosphorylation, respectively, compared to the levels in pubertal testes. Several of these proteins were associated with reproductive processes such as sexual reproduction, spermatogenesis, fertilization, and spermatid development. In particular, outer dense fiber protein 1 (ODF1), protein maelstrom homolog (MAEL), actin-like protein 7B (ACTL7B), tyrosine-(Y)-phosphorylation regulated (CABYR), and tripartite motif containing 36 (TRIM36) were upregulated with age at both the proteome and phosphoproteome levels. Combining proteome and phosphoproteome analysis can be effectively applied to study the protein/phosphorylation patterns of buffalo testes. These data provide new regulatory candidates and evidence for a complex network in spermatogenesis in buffalo testes, and serve as an important resource for exploring the physiological mechanism of spermatogenesis in mammals.
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Affiliation(s)
- Yu-Lin Huang
- Department of Cell and Genetics, College of Basic Medicine, Guangxi University of Chinese Medicine, Nanning, Guangxi, China
| | - Peng-Fei Zhang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Animal Reproduction Institute, Guangxi University, Nanning, Guangxi, China
| | - Qiang Fu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Animal Reproduction Institute, Guangxi University, Nanning, Guangxi, China
| | - Weng-Tan He
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Animal Reproduction Institute, Guangxi University, Nanning, Guangxi, China
| | - Kai Xiao
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Animal Reproduction Institute, Guangxi University, Nanning, Guangxi, China
| | - Ming Zhang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Animal Reproduction Institute, Guangxi University, Nanning, Guangxi, China.
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29
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Cerván-Martín M, Suazo-Sánchez MI, Rivera-Egea R, Garrido N, Luján S, Romeu G, Santos-Ribeiro S, Castilla JA, Gonzalvo MC, Clavero A, Vicente FJ, Maldonado V, Burgos M, Barrionuevo FJ, Jiménez R, Sánchez-Curbelo J, López-Rodrigo O, Peraza MF, Pereira-Caetano I, Marques PI, Carvalho F, Barros A, Bassas L, Seixas S, Gonçalves J, Larriba S, Lopes AM, Palomino-Morales RJ, Carmona FD. Intronic variation of the SOHLH2 gene confers risk to male reproductive impairment. Fertil Steril 2020; 114:398-406. [PMID: 32690270 DOI: 10.1016/j.fertnstert.2020.02.115] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 02/06/2020] [Accepted: 02/28/2020] [Indexed: 10/23/2022]
Abstract
OBJECTIVE To evaluate whether SOHLH2 intronic variation contributes to the genetic predisposition to male infertility traits, including severe oligospermia (SO) and different nonobstructive azoospermia (NOA) clinical phenotypes. DESIGN Genetic association study. SETTING Not applicable. PATIENT(S) Five hundred five cases (455 infertile patients diagnosed with NOA and 50 with SO) and 1,050 healthy controls from Spain and Portugal. INTERVENTION(S) None. MAIN OUTCOME MEASURE(S) Genomic DNA extraction from peripheral blood mononuclear cells, genotyping of the SOHLH2 polymorphisms rs1328626 and rs6563386 using the TaqMan allelic discrimination technology, case-control association analyses using logistic regression models, and exploration of functional annotations in publicly available databases. RESULT(S) Evidence of association was observed for both rs6563386 with SO and rs1328626 with unsuccessful sperm retrieval after testicular sperm extraction (TESE-) in the context of NOA. A dominant effect of the minor alleles was suggested in both associations, either when the subset of patients with the manifestation were compared against the control group (rs6563386/SO: P=.021, odds ratio [OR] = 0.51; rs1328626/TESE-: P=.066, OR = 1.46) or against the group of patients without the manifestation (rs6563386/SO: P=.014, OR = 0.46; rs1328626/TESE-: P=.012, OR = 2.43). The haplotype tests suggested a combined effect of both polymorphisms. In silico analyses evidenced that this effect could be due to alteration of the isoform population. CONCLUSION(S) Our data suggest that intronic variation of SOHLH2 is associated with spermatogenic failure. The genetic effect is likely caused by different haplotypes of rs6563386 and rs1328626, which may predispose to SO or TESE- depending on the specific allelic combination.
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Affiliation(s)
- Miriam Cerván-Martín
- Departamento de Genética e Instituto de Biotecnología, Universidad de Granada, Granada, Spain; Instituto de Investigación Biosanitaria ibs.GRANADA, Granada, Spain
| | - M Irene Suazo-Sánchez
- Departamento de Genética e Instituto de Biotecnología, Universidad de Granada, Granada, Spain
| | - Rocío Rivera-Egea
- Andrology Laboratory and Sperm Bank, IVIRMA Valencia, Valencia, Spain; IVI Foundation, Health Research Institute La Fe, Valencia, Spain
| | - Nicolás Garrido
- IVI Foundation, Health Research Institute La Fe, Valencia, Spain; Servicio de Urología. Hospital Universitari i Politecnic La Fe e Instituto de Investigación Sanitaria La Fe, Valencia, Spain
| | - Saturnino Luján
- Servicio de Urología. Hospital Universitari i Politecnic La Fe e Instituto de Investigación Sanitaria La Fe, Valencia, Spain
| | - Gema Romeu
- Servicio de Urología. Hospital Universitari i Politecnic La Fe e Instituto de Investigación Sanitaria La Fe, Valencia, Spain
| | - Samuel Santos-Ribeiro
- IVI-RMA Lisbon, Lisbon, Portugal; Department of Obstetrics and Gynecology, Faculty of Medicine, University of Lisbon, Lisbon, Portugal
| | - José A Castilla
- Instituto de Investigación Biosanitaria ibs.GRANADA, Granada, Spain; Unidad de Reproducción, UGC Obstetricia y Ginecología, HU Virgen de las Nieves, Granada, Spain; CEIFER Biobanco - NextClinics, Granada, Spain
| | - M Carmen Gonzalvo
- Instituto de Investigación Biosanitaria ibs.GRANADA, Granada, Spain; Unidad de Reproducción, UGC Obstetricia y Ginecología, HU Virgen de las Nieves, Granada, Spain
| | - Ana Clavero
- Instituto de Investigación Biosanitaria ibs.GRANADA, Granada, Spain; Unidad de Reproducción, UGC Obstetricia y Ginecología, HU Virgen de las Nieves, Granada, Spain
| | - F Javier Vicente
- Instituto de Investigación Biosanitaria ibs.GRANADA, Granada, Spain; UGC de Urología, HU Virgen de las Nieves, Granada, Spain
| | - Vicente Maldonado
- UGC de Obstetricia y Ginecología, Complejo Hospitalario de Jaén, Jaén, Spain
| | - Miguel Burgos
- Departamento de Genética e Instituto de Biotecnología, Universidad de Granada, Granada, Spain
| | - Francisco J Barrionuevo
- Departamento de Genética e Instituto de Biotecnología, Universidad de Granada, Granada, Spain
| | - Rafael Jiménez
- Departamento de Genética e Instituto de Biotecnología, Universidad de Granada, Granada, Spain
| | - Josvany Sánchez-Curbelo
- Laboratory of Seminology and Embryology, Andrology Service-Fundació Puigvert, Barcelona, Spain
| | - Olga López-Rodrigo
- Laboratory of Seminology and Embryology, Andrology Service-Fundació Puigvert, Barcelona, Spain
| | - M Fernanda Peraza
- Laboratory of Seminology and Embryology, Andrology Service-Fundació Puigvert, Barcelona, Spain
| | - Iris Pereira-Caetano
- Departamento de Genética Humana, Instituto Nacional de Saúde Dr. Ricardo Jorge, Lisbon, Portugal
| | - Patricia I Marques
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto (I3S), Porto, Portugal; Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP), Porto, Portugal
| | - Filipa Carvalho
- Serviço de Genética, Departamento de Patologia, Faculdade de Medicina da Universidade do Porto, Porto, Portugal
| | - Alberto Barros
- Serviço de Genética, Departamento de Patologia, Faculdade de Medicina da Universidade do Porto, Porto, Portugal
| | - Lluís Bassas
- Laboratory of Seminology and Embryology, Andrology Service-Fundació Puigvert, Barcelona, Spain
| | - Susana Seixas
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto (I3S), Porto, Portugal; Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP), Porto, Portugal
| | - João Gonçalves
- Departamento de Genética Humana, Instituto Nacional de Saúde Dr. Ricardo Jorge, Lisbon, Portugal; ToxOmics - Centro de Toxicogenómica e Saúde Humana, Nova Medical School, Lisbon, Portugal
| | - Sara Larriba
- Human Molecular Genetics Group, Bellvitge Biomedical Research Institute (IDIBELL), L'Hospitalet de Llobregat, Barcelona, Spain
| | - Alexandra M Lopes
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto (I3S), Porto, Portugal; Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP), Porto, Portugal
| | - Rogelio J Palomino-Morales
- Instituto de Investigación Biosanitaria ibs.GRANADA, Granada, Spain; Departamento de Bioquímica y Biología Molecular I, Universidad de Granada, Granada, Spain.
| | - F David Carmona
- Departamento de Genética e Instituto de Biotecnología, Universidad de Granada, Granada, Spain; Instituto de Investigación Biosanitaria ibs.GRANADA, Granada, Spain
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Qi XL, Xing K, Huang Z, Chen Y, Wang L, Zhang LC, Sheng XH, Wang XG, Ni HM, Guo Y. Comparative transcriptome analysis digs out genes related to antifreeze between fresh and frozen-thawed rooster sperm. Poult Sci 2020; 99:2841-2851. [PMID: 32475417 PMCID: PMC7597663 DOI: 10.1016/j.psj.2020.01.022] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Revised: 12/28/2019] [Accepted: 01/01/2020] [Indexed: 12/30/2022] Open
Abstract
The objective of this study was to investigate differences in mRNA expression between fresh and frozen–thawed sperm in roosters. In trial 1, gene expression profiles were measured using microarray with Affymetrix GeneChip Chicken Genome Arrays. The results showed that 2,115 genes were differentially expressed between the 2 groups. Among these genes, 2,086 were significantly downregulated and 29 were significantly upregulated in the frozen–thawed sperm group. Gene Ontology (GO) analysis showed that more than 1,000 differentially expressed genes (DEG) of all significantly regulated genes were involved in GO terms including biological processes, molecular function, and cellular component. Kyoto Encyclopedia of Genes and Genomes analysis showed that DEG were significantly (P < 0.05) enriched on ribosome, oxidative phosphorylation, proteasome, cell cycle, oocyte meiosis, and spliceosome pathways. In trial 2, ejaculated semen was collected from 18 roosters and divided into 5 recombinant HSP90 protein–supplemented groups (0.01, 0.1, 0.5, 1, or 2 μg/mL) and one control group with no recombinant HSP90 protein supplementation to evaluate the effect of recombinant HSP90 protein in the extender on post-thaw quality of rooster semen. The results showed that post-thaw sperm viability and motility was significantly improved (P < 0.05) in the extender containing 0.5 and 1 μg/mL of recombinant HSP90 protein compared with the control. Our preliminary results will provide a valuable basis for understanding the potential molecular mechanisms of cryodamage in frozen–thawed sperm and theoretical guidance to improve the fertility of frozen–thawed chicken sperm.
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Affiliation(s)
- Xiao-Long Qi
- Animal Science and Technology College, Beijing University of Agriculture, Beijing 102206, China
| | - Kai Xing
- Animal Science and Technology College, Beijing University of Agriculture, Beijing 102206, China
| | - Zhen Huang
- Ecological Construction Department, Beijing Monitoring Station for Animal Husbandry Environment, Beijing 102200, China
| | - Yu Chen
- Department of Livestock and Poultry Products Testing, Beijing General Station of Animal Husbandry, Beijing 100107, China
| | - Liang Wang
- Department of Livestock and Poultry Products Testing, Beijing General Station of Animal Husbandry, Beijing 100107, China
| | - Li-Chang Zhang
- Beijing Foreign Enterprise Service Group Co., Ltd, Beijing Er Shang Group, Beijing 100053, China
| | - Xi-Hui Sheng
- Animal Science and Technology College, Beijing University of Agriculture, Beijing 102206, China
| | - Xiang-Guo Wang
- Animal Science and Technology College, Beijing University of Agriculture, Beijing 102206, China
| | - He-Min Ni
- Animal Science and Technology College, Beijing University of Agriculture, Beijing 102206, China
| | - Yong Guo
- Animal Science and Technology College, Beijing University of Agriculture, Beijing 102206, China.
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31
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Aitken RJ, Baker MA. The Role of Genetics and Oxidative Stress in the Etiology of Male Infertility-A Unifying Hypothesis? Front Endocrinol (Lausanne) 2020; 11:581838. [PMID: 33101214 PMCID: PMC7554587 DOI: 10.3389/fendo.2020.581838] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Accepted: 09/07/2020] [Indexed: 12/15/2022] Open
Abstract
Despite the high prevalence of male infertility, very little is known about its etiology. In recent years however, advances in gene sequencing technology have enabled us to identify a large number of rare single point mutations responsible for impeding all aspects of male reproduction from its embryonic origins, through the endocrine regulation of spermatogenesis to germ cell differentiation and sperm function. Such monogenic mutations aside, the most common genetic causes of male infertility are aneuploidies such as Klinefelter syndrome and Y-chromosome mutations which together account for around 20-25% of all cases of non-obstructive azoospermia. Oxidative stress has also emerged as a major cause of male fertility with at least 40% of patients exhibiting some evidence of redox attack, resulting in high levels of lipid peroxidation and oxidative DNA damage in the form of 8-hydroxy-2'-deoxyguanosine (8OHdG). The latter is highly mutagenic and may contribute to de novo mutations in our species, 75% of which are known to occur in the male germ line. An examination of 8OHdG lesions in the human sperm genome has revealed ~9,000 genomic regions vulnerable to oxidative attack in spermatozoa. While these oxidized bases are generally spread widely across the genome, a particular region on chromosome 15 appears to be a hot spot for oxidative attack. This locus maps to a genetic location which has linkages to male infertility, cancer, imprinting disorders and a variety of behavioral conditions (autism, bipolar disease, spontaneous schizophrenia) which have been linked to the age of the father at the moment of conception. We present a hypothesis whereby a number of environmental, lifestyle and clinical factors conspire to induce oxidative DNA damage in the male germ line which then triggers the formation de novo mutations which can have a major impact on the health of the offspring including their subsequent fertility.
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Affiliation(s)
- Robert John Aitken
- Faculty of Science and Faculty of Health and Medicine, Priority Research Centre in Reproductive Science, University of Newcastle, Callaghan, NSW, Australia
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
- *Correspondence: Robert John Aitken
| | - Mark A. Baker
- Faculty of Science and Faculty of Health and Medicine, Priority Research Centre in Reproductive Science, University of Newcastle, Callaghan, NSW, Australia
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
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32
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Pandey A, Yadav SK, Vishvkarma R, Singh B, Maikhuri JP, Rajender S, Gupta G. The dynamics of gene expression during and post meiosis sets the sperm agenda. Mol Reprod Dev 2019; 86:1921-1939. [DOI: 10.1002/mrd.23278] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2019] [Accepted: 09/16/2019] [Indexed: 12/14/2022]
Affiliation(s)
- Aastha Pandey
- Division of EndocrinologyCSIR‐Central Drug Research Institute Lucknow India
| | | | - Rahul Vishvkarma
- Division of EndocrinologyCSIR‐Central Drug Research Institute Lucknow India
| | - Bineta Singh
- Division of EndocrinologyCSIR‐Central Drug Research Institute Lucknow India
| | | | - Singh Rajender
- Division of EndocrinologyCSIR‐Central Drug Research Institute Lucknow India
| | - Gopal Gupta
- Division of EndocrinologyCSIR‐Central Drug Research Institute Lucknow India
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33
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Precursor RNA processing 3 is required for male fertility, and germline stem cell self-renewal and differentiation via regulating spliceosome function in Drosophila testes. Sci Rep 2019; 9:9988. [PMID: 31292463 PMCID: PMC6620278 DOI: 10.1038/s41598-019-46419-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Accepted: 06/28/2019] [Indexed: 11/17/2022] Open
Abstract
The nuclear pre-mRNA spliceosome is a large complex containing five small nuclear ribonucleoprotein particles (snRNPs) and many splicing factors. Messenger RNAs (mRNAs) are generated from pre-mRNAs by the process of RNA splicing, which is conserved in eukaryotes. Precursor RNA processing 3 (Prp3) is a U4/U6-associated snRNP whose function remains largely unknown. In the present study, using genetic manipulation of a Drosophila melanogaster testis model, we demonstrated that Prp3 is essential for male fertility in Drosophila. Prp3 deficiency in germline stem cells (GSCs) and early cyst cells resulted in abnormal structure of testes and maintenance defects of GSCs and cyst stem cells. Knockdown of Prp3 in spermatogonia and early cyst cells mediated tumor formation caused by differentiation defects. Using an in vitro assay, knockdown of Prp3 decreased proliferation and increased cell death, and controlled the spliceosome function via regulating spliceosome subunits expression in Drosophila S2 cells. We also identified two other splicing factors in the Prp complex (Prp19 and Prp8), which mimicked the phenotype of Prp3 in the Drosophila stem cell niche. Our results revealed a significant role of precursor RNA processing factors in male testes, indicating that Prp3, a key spliceosome component in the Prp complex, is essential for male fertility, and germline stem cell self-renewal and differentiation, via regulating the spliceosome function in Drosophila testes.
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34
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Zeng Q, Lei F, Chang Y, Gao Z, Wang Y, Gao Q, Niu P, Li Q. An oncogenic gene, SNRPA1, regulates PIK3R1, VEGFC, MKI67, CDK1 and other genes in colorectal cancer. Biomed Pharmacother 2019; 117:109076. [PMID: 31203132 DOI: 10.1016/j.biopha.2019.109076] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 05/26/2019] [Accepted: 06/02/2019] [Indexed: 02/07/2023] Open
Abstract
PURPOSE Colorectal cancer (CRC) caused more than 65,000 mortalities worldwide per year. It is a result of one or a combination of chromosomal instability, CpG island methylator phenotype, and microsatellite instability. SNRPA1 (small nuclear ribonucleoprotein polypeptide A) is a subunit of spliceosome complex that is involved in the RNA processing. Overexpression of SNRPA1 has been implicated in a variety of cancers including CRC. Besides from its role in mediating the RNA processing, the other aspects regarding its function in the progression of colorectal cancer have not been revealed. METHODS Herein, we combined regular gene overexpression or knock down in vitro and in vivo and microarray gene profiling analysis to decipher the unknow regulatory role of SNRPA1 in CRC. RESULTS We found SNRPA1 widely expression in many representative CRC cell lines. Knocking down expression of SNRPA1 by shRNA lentivirus inhibited the cell proliferation in vitro and impaired tumor formation from implanted CRC cells transduced with SNRPA1 silencing shRNA lentivirus in nude mice. It also promoted the cell apoptosis by upregulating the caspase 3/7 activity. Additional microarray gene profiling analysis uncovered the gene interaction network of SNRPA1, special focus was placed on its association with tumor suppressor or oncogenes. CONCLUSIONS According to the results of gene interaction network as well as qRT-PCR verification, it revealed that SNPRA1 regulates PIK3R1, VEGFC, MKI67, CDK1 in CRC. These novel findings identified new roles played by SNRPA1 in the progression of CRC and it may become a potential therapeutic target in the treatment of CRC.
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Affiliation(s)
- Qingmin Zeng
- National Clinical Research Center for Cancer & Key Laboratory of Cancer Prevention and Therapy, Tianjin Medical University Cancer Institute and Hospital, Tianjin, 300060, China
| | - Fuming Lei
- Department of General Surgery, Gastrointestinal Surgery, Peking University Shougang Hospital, Jin Yuan Zhuang Road No. 9, Beijing 100144, China
| | - Yigang Chang
- National Clinical Research Center for Cancer & Key Laboratory of Cancer Prevention and Therapy, Tianjin Medical University Cancer Institute and Hospital, Tianjin, 300060, China
| | - Zhaoya Gao
- Department of General Surgery, Gastrointestinal Surgery, Peking University Shougang Hospital, Jin Yuan Zhuang Road No. 9, Beijing 100144, China
| | - Yanzhao Wang
- Department of General Surgery, Gastrointestinal Surgery, Peking University Shougang Hospital, Jin Yuan Zhuang Road No. 9, Beijing 100144, China
| | - Qingkun Gao
- Department of General Surgery, Gastrointestinal Surgery, Peking University Shougang Hospital, Jin Yuan Zhuang Road No. 9, Beijing 100144, China
| | - Pengfei Niu
- Department of General Surgery, Gastrointestinal Surgery, Peking University Shougang Hospital, Jin Yuan Zhuang Road No. 9, Beijing 100144, China
| | - Qiang Li
- National Clinical Research Center for Cancer & Key Laboratory of Cancer Prevention and Therapy, Tianjin Medical University Cancer Institute and Hospital, Tianjin, 300060, China.
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DDX5 plays essential transcriptional and post-transcriptional roles in the maintenance and function of spermatogonia. Nat Commun 2019; 10:2278. [PMID: 31123254 PMCID: PMC6533336 DOI: 10.1038/s41467-019-09972-7] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 04/02/2019] [Indexed: 02/07/2023] Open
Abstract
Mammalian spermatogenesis is sustained by mitotic germ cells with self-renewal potential known as undifferentiated spermatogonia. Maintenance of undifferentiated spermatogonia and spermatogenesis is dependent on tightly co-ordinated transcriptional and post-transcriptional mechanisms. The RNA helicase DDX5 is expressed by spermatogonia but roles in spermatogenesis are unexplored. Using an inducible knockout mouse model, we characterise an essential role for DDX5 in spermatogonial maintenance and show that Ddx5 is indispensable for male fertility. We demonstrate that DDX5 regulates appropriate splicing of key genes necessary for spermatogenesis. Moreover, DDX5 regulates expression of cell cycle genes in undifferentiated spermatogonia post-transcriptionally and is required for cell proliferation and survival. DDX5 can also act as a transcriptional co-activator and we demonstrate that DDX5 interacts with PLZF, a transcription factor required for germline maintenance, to co-regulate select target genes. Combined, our data reveal a critical multifunctional role for DDX5 in regulating gene expression programmes and activity of undifferentiated spermatogonia. Sustained sperm production is dependent on activity of undifferentiated spermatogonia. Here, the authors demonstrate an essential role for RNA helicase DDX5 in maintenance of spermatogonia in adults through control of gene transcription plus RNA processing and export.
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36
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Yu J, Yan Y, Luan X, Qiao C, Liu Y, Zhao D, Xie B, Zheng Q, Wang M, Chen W, Shen C, He Z, Hu X, Huang X, Li H, Shao Q, Chen X, Zheng B, Fang J. Srlp is crucial for the self-renewal and differentiation of germline stem cells via RpL6 signals in Drosophila testes. Cell Death Dis 2019; 10:294. [PMID: 30931935 PMCID: PMC6443671 DOI: 10.1038/s41419-019-1527-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Revised: 03/11/2019] [Accepted: 03/14/2019] [Indexed: 12/22/2022]
Abstract
Self-renewal and differentiation in germline stem cells (GSCs) are tightly regulated by the stem cell niche and via multiple approaches. In our previous study, we screened the novel GSC regulatory gene Srlp in Drosophila testes. However, the underlying mechanistic links between Srlp and the stem cell niche remain largely undetermined. Here, using genetic manipulation of the Drosophila model, we systematically analyze the function and mechanism of Srlp in vivo and in vitro. In Drosophila, Srlp is an essential gene that regulates the self-renewal and differentiation of GSCs in the testis. In the in vitro assay, Srlp is found to control the proliferation ability and cell death in S2 cells, which is consistent with the phenotype observed in Drosophila testis. Furthermore, results of the liquid chromatography-tandem mass spectrometry (LC-MS/MS) reveal that RpL6 binds to Srlp. Srlp also regulates the expression of spliceosome and ribosome subunits and controls spliceosome and ribosome function via RpL6 signals. Collectively, our findings uncover the genetic causes and molecular mechanisms underlying the stem cell niche. This study provides new insights for elucidating the pathogenic mechanism of male sterility and the formation of testicular germ cell tumor.
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Affiliation(s)
- Jun Yu
- Department of Gynecology, The Affiliated Hospital of Jiangsu University, Jiangsu University, Zhenjiang Jiangsu, 212001, China.,Reproductive Sciences Institute of Jiangsu University, Zhenjiang Jiangsu, 212001, China
| | - Yidan Yan
- Department of Gynecology, The Affiliated Hospital of Jiangsu University, Jiangsu University, Zhenjiang Jiangsu, 212001, China.,Reproductive Sciences Institute of Jiangsu University, Zhenjiang Jiangsu, 212001, China
| | - Xiaojin Luan
- Department of Gynecology, The Affiliated Hospital of Jiangsu University, Jiangsu University, Zhenjiang Jiangsu, 212001, China.,Reproductive Sciences Institute of Jiangsu University, Zhenjiang Jiangsu, 212001, China
| | - Chen Qiao
- Department of Clinical Pharmacy, the Affiliated Hospital of Jiangsu University, Jiangsu University, Zhenjiang Jiangsu, 212001, China
| | - Yuanyuan Liu
- Center for Reproduction and Genetics, Suzhou Municipal Hospital, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Jiangsu, 215002, China
| | - Dan Zhao
- Reproductive Sciences Institute of Jiangsu University, Zhenjiang Jiangsu, 212001, China.,Center for Reproduction, The Fourth People's Hospital of Zhenjiang, Zhenjiang Jiangsu, 212013, China
| | - Bing Xie
- Department of Gynecology, The Affiliated Hospital of Jiangsu University, Jiangsu University, Zhenjiang Jiangsu, 212001, China
| | - Qianwen Zheng
- Department of Gynecology, The Affiliated Hospital of Jiangsu University, Jiangsu University, Zhenjiang Jiangsu, 212001, China.,Reproductive Sciences Institute of Jiangsu University, Zhenjiang Jiangsu, 212001, China
| | - Min Wang
- Department of Gynecology, The Affiliated Hospital of Jiangsu University, Jiangsu University, Zhenjiang Jiangsu, 212001, China
| | - Wanyin Chen
- Department of Gynecology, The Affiliated Hospital of Jiangsu University, Jiangsu University, Zhenjiang Jiangsu, 212001, China
| | - Cong Shen
- Center for Reproduction and Genetics, Suzhou Municipal Hospital, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Jiangsu, 215002, China
| | - Zeyu He
- Department of Clinical Medicine, China Medical University, Shenyang Liaoning, 110001, China
| | - Xing Hu
- Department of Gynecology, The Affiliated Hospital of Jiangsu University, Jiangsu University, Zhenjiang Jiangsu, 212001, China
| | - Xiaoyan Huang
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing Jiangsu, 211166, China
| | - Hong Li
- Center for Reproduction and Genetics, Suzhou Municipal Hospital, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Jiangsu, 215002, China
| | - Qixiang Shao
- Reproductive Sciences Institute of Jiangsu University, Zhenjiang Jiangsu, 212001, China.,Department of Immunology and Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang Jiangsu, 212013, China
| | - Xia Chen
- Department of Gynecology, The Affiliated Hospital of Jiangsu University, Jiangsu University, Zhenjiang Jiangsu, 212001, China. .,Reproductive Sciences Institute of Jiangsu University, Zhenjiang Jiangsu, 212001, China.
| | - Bo Zheng
- Center for Reproduction and Genetics, Suzhou Municipal Hospital, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Jiangsu, 215002, China.
| | - Jie Fang
- Department of Gynecology, The Affiliated Hospital of Jiangsu University, Jiangsu University, Zhenjiang Jiangsu, 212001, China.
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Yu J, Luan X, Yan Y, Qiao C, Liu Y, Zhao D, Xie B, Zheng Q, Wang M, Chen W, Shen C, He Z, Hu X, Huang X, Li H, Chen B, Zheng B, Chen X, Fang J. Small ribonucleoprotein particle protein SmD3 governs the homeostasis of germline stem cells and the crosstalk between the spliceosome and ribosome signals in Drosophila. FASEB J 2019; 33:8125-8137. [PMID: 30921522 DOI: 10.1096/fj.201802536rr] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The ribonucleoprotein (RNP) spliceosome machinery triggers the precursor RNA splicing process in eukaryotes. Major spliceosome defects are implicated in male infertility; however, the underlying mechanistic links between the spliceosome and the ribosome in Drosophila testes remains largely unresolved. Small ribonucleoprotein particle protein SmD3 (SmD3) is a novel germline stem cell (GSC) regulatory gene identified in our previous screen of Drosophila testes. In the present study, using genetic manipulation in a Drosophila model, we demonstrated that SmD3 is required for the GSC niche and controls the self-renewal and differentiation of GSCs in the testis. Using in vitro assays in Schneider 2 cells, we showed that SmD3 also regulates the homeostasis of proliferation and apoptosis in Drosophila. Furthermore, using liquid chromatography-tandem mass spectrometry methods, SmD3 was identified as binding with ribosomal protein (Rp)L18, which is a key regulator of the large subunit in the ribosome. Moreover, SmD3 was observed to regulate spliceosome and ribosome subunit expression levels and controlled spliceosome and ribosome function via RpL18. Significantly, our findings revealed the genetic causes and molecular mechanisms underlying the stem cell niche and the crosstalk between the spliceosome and the ribosome.-Yu, J., Luan, X., Yan, Y., Qiao, C., Liu, Y., Zhao, D., Xie, B., Zheng, Q., Wang, M., Chen, W., Shen, C., He, Z., Hu, X., Huang, X., Li, H., Chen, B., Zheng, B., Chen, X., Fang, J. Small ribonucleoprotein particle protein SmD3 governs the homeostasis of germline stem cells and the crosstalk between the spliceosome and ribosome signals in Drosophila.
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Affiliation(s)
- Jun Yu
- Department of Gynecology, The Affiliated Hospital of Jiangsu University-Jiangsu University, Zhenjiang, China.,Reproductive Sciences Institute, Jiangsu University, Zhenjiang, China
| | - Xiaojin Luan
- Department of Gynecology, The Affiliated Hospital of Jiangsu University-Jiangsu University, Zhenjiang, China.,Reproductive Sciences Institute, Jiangsu University, Zhenjiang, China
| | - Yidan Yan
- Department of Gynecology, The Affiliated Hospital of Jiangsu University-Jiangsu University, Zhenjiang, China.,Reproductive Sciences Institute, Jiangsu University, Zhenjiang, China
| | - Chen Qiao
- Department of Clinical Pharmacy, The Affiliated Hospital of Jiangsu University-Jiangsu University, Zhenjiang, China
| | - Yuanyuan Liu
- Center for Reproduction and Genetics, Suzhou Municipal Hospital-The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China
| | - Dan Zhao
- Reproductive Sciences Institute, Jiangsu University, Zhenjiang, China.,Center for Reproduction, The Fourth Affiliated Hospital of Jiangsu University-The Fourth People's Hospital of Zhenjiang, Zhenjiang, China
| | - Bing Xie
- Department of Obstetrics and Gynecology, The Fourth Affiliated Hospital of Jiangsu University-The Fourth People's Hospital of Zhenjiang, Zhenjiang, China
| | - Qianwen Zheng
- Department of Gynecology, The Affiliated Hospital of Jiangsu University-Jiangsu University, Zhenjiang, China.,Reproductive Sciences Institute, Jiangsu University, Zhenjiang, China
| | - Min Wang
- Department of Gynecology, The Affiliated Hospital of Jiangsu University-Jiangsu University, Zhenjiang, China
| | - Wanyin Chen
- Department of Gynecology, The Affiliated Hospital of Jiangsu University-Jiangsu University, Zhenjiang, China
| | - Cong Shen
- Center for Reproduction and Genetics, Suzhou Municipal Hospital-The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China
| | - Zeyu He
- Department of Clinical Medicine, China Medical University, Shenyang, China
| | - Xing Hu
- Department of Gynecology, The Affiliated Hospital of Jiangsu University-Jiangsu University, Zhenjiang, China
| | - Xiaoyan Huang
- Department of Histology and Embryology, State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, China
| | - Hong Li
- Center for Reproduction and Genetics, Suzhou Municipal Hospital-The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China
| | - Binghai Chen
- Department of Urology, The Affiliated Hospital of Jiangsu University
| | - Bo Zheng
- Center for Reproduction and Genetics, Suzhou Municipal Hospital-The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China
| | - Xia Chen
- Department of Gynecology, The Affiliated Hospital of Jiangsu University-Jiangsu University, Zhenjiang, China.,Reproductive Sciences Institute, Jiangsu University, Zhenjiang, China
| | - Jie Fang
- Department of Gynecology, The Affiliated Hospital of Jiangsu University-Jiangsu University, Zhenjiang, China
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Yang Q, Luo X, Bai R, Zhao F, Dai S, Li F, Zhu J, Liu J, Niu W, Sun Y. Shorter leukocyte telomere length is associated with risk of nonobstructive azoospermia. Fertil Steril 2019; 110:648-654.e1. [PMID: 30196961 DOI: 10.1016/j.fertnstert.2018.05.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2017] [Revised: 05/03/2018] [Accepted: 05/08/2018] [Indexed: 10/28/2022]
Abstract
OBJECTIVE To determine the association between leukocyte telomere length and the risk of nonobstructive azoospermia (NOA). DESIGN The mean leukocyte telomere length (LTL) among men with NOA, obstructive azoospermia (OA), and normospermic subjects was determined by quantitative polymerase chain reaction (PCR). We used logistic regression to investigate the association between LTL and the risk of NOA after adjustment for age and body mass index (BMI). Partial correlation analysis was also used to evaluate the relationship of clinical parameters with the mean LTL among men with OA and NOA. SETTING Reproductive medicine center. PATIENTS(S) A total of 866 men, including 270 normospermic controls, 247 OA and 349 NOA patients. INTERVENTION(S) None. MAIN OUTCOME MEASURE(S) Leukocyte telomere length. RESULT(S) The mean relative LTL of men with NOA was significantly shorter than that of those with OA and in normospermic controls (odds ratio [OR] 0.81, 95% confidence interval [CI] 0.64-0.98 vs. OR 0.92, 95% CI 0.70-1.24 vs. OR 0.99, 95% CI 0.83-1.22), respectively). Subjects with shorter telomeres (lowest tertile) had a significantly higher risk of NOA than those with longer telomeres (highest tertile). Interestingly, we also found that a low relative LTL was associated with poor efficiency of spermatogenesis using the Johnsen score after testis biopsy and histopathology in azoospermic patients, after adjusting for patient age and BMI. CONCLUSION(S) This is the first report that short LTL is associated with NOA, shedding light on an important biological pathway involved in the etiology of this form of male factor infertility.
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Affiliation(s)
- Qingling Yang
- Reproductive Medical Center, First Affiliated Hospital of Zhengzhou University, and Henan Province Key Laboratory for Reproduction and Genetics, Zhengzhou, Henan, People's Republic of China
| | - Xiaoyan Luo
- Reproductive Medical Center, First Affiliated Hospital of Zhengzhou University, and Henan Province Key Laboratory for Reproduction and Genetics, Zhengzhou, Henan, People's Republic of China
| | - Rui Bai
- Reproductive Medical Center, First Affiliated Hospital of Zhengzhou University, and Henan Province Key Laboratory for Reproduction and Genetics, Zhengzhou, Henan, People's Republic of China
| | - Feifei Zhao
- Reproductive Medical Center, First Affiliated Hospital of Zhengzhou University, and Henan Province Key Laboratory for Reproduction and Genetics, Zhengzhou, Henan, People's Republic of China
| | - Shanjun Dai
- Reproductive Medical Center, First Affiliated Hospital of Zhengzhou University, and Henan Province Key Laboratory for Reproduction and Genetics, Zhengzhou, Henan, People's Republic of China
| | - Fangyuan Li
- Reproductive Medical Center, First Affiliated Hospital of Zhengzhou University, and Henan Province Key Laboratory for Reproduction and Genetics, Zhengzhou, Henan, People's Republic of China
| | - Jing Zhu
- Reproductive Medical Center, First Affiliated Hospital of Zhengzhou University, and Henan Province Key Laboratory for Reproduction and Genetics, Zhengzhou, Henan, People's Republic of China
| | - Jinhao Liu
- Reproductive Medical Center, First Affiliated Hospital of Zhengzhou University, and Henan Province Key Laboratory for Reproduction and Genetics, Zhengzhou, Henan, People's Republic of China
| | - Wenbin Niu
- Reproductive Medical Center, First Affiliated Hospital of Zhengzhou University, and Henan Province Key Laboratory for Reproduction and Genetics, Zhengzhou, Henan, People's Republic of China
| | - Yingpu Sun
- Reproductive Medical Center, First Affiliated Hospital of Zhengzhou University, and Henan Province Key Laboratory for Reproduction and Genetics, Zhengzhou, Henan, People's Republic of China.
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ATP synthase is required for male fertility and germ cell maturation in Drosophila testes. Mol Med Rep 2019; 19:1561-1570. [PMID: 30628672 PMCID: PMC6390039 DOI: 10.3892/mmr.2019.9834] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Accepted: 11/08/2018] [Indexed: 01/29/2023] Open
Abstract
Germ cell maturation is essential for spermatogenesis and testis homeostasis. ATP synthase serves significant roles in energy storage in germ cell survival and is catalyzed by alterations in the mitochondrial membrane proton concentration. The intrinsic cellular mechanisms governing stem cell maturation remain largely unknown. In the present study, in vivo RNA interference (RNAi) screening of major ATP synthase subunits was performed, and the function of ATP synthase for male fertility and spermatogenesis in Drosophila was explored. A Upstream Activation Sequence/Gal4 transcription factor system was used to knock down gene expression in specific cell types, and immunofluorescence staining was conducted to assess the roles of ATP synthase subunits in Drosophila testes. It was identified that knockdown of ATP synthase resulted in male infertility and abnormal spermatogenesis in Drosophila testes. In addition, knockdown of the ATP synthase β subunit in germ cells resulted in defects in male infertility and germ cell maturation, while the hub and cyst cell populations were maintained. Other major ATP synthase subunits were also examined and similar phenotypes in Drosophila testes were identified. Taken together, the data from the present study revealed that ATP synthase serves important roles for male fertility during spermatogenesis by regulating germ cell maturation in Drosophila testes.
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40
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Cheng Y, Chen D. Fruit fly research in China. J Genet Genomics 2018; 45:583-592. [PMID: 30455037 DOI: 10.1016/j.jgg.2018.09.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 09/21/2018] [Accepted: 09/29/2018] [Indexed: 11/19/2022]
Abstract
Served as a model organism over a century, fruit fly has significantly pushed forward the development of global scientific research, including in China. The high similarity in genomic features between fruit fly and human enables this tiny insect to benefit the biomedical studies of human diseases. In the past decades, Chinese biologists have used fruit fly to make numerous achievements on understanding the fundamental questions in many diverse areas of biology. Here, we review some of the recent fruit fly studies in China, and mainly focus on those studies in the fields of stem cell biology, cancer therapy and regeneration medicine, neurological disorders and epigenetics.
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Affiliation(s)
- Ying Cheng
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Dahua Chen
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.
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Fernández-Espartero CH, Rizzo A, Fulford AD, Falo-Sanjuan J, Goutte-Gattat D, Ribeiro PS. Prp8 regulates oncogene-induced hyperplastic growth in Drosophila. Development 2018; 145:dev.162156. [PMID: 30333215 PMCID: PMC6262796 DOI: 10.1242/dev.162156] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Accepted: 10/10/2018] [Indexed: 01/08/2023]
Abstract
Although developmental signalling pathways control tumourigenic growth, the cellular mechanisms that abnormally proliferating cells rely on are still largely unknown. Drosophila melanogaster is a genetically tractable model that is used to study how specific genetic changes confer advantageous tumourigenic traits. Despite recent efforts, the role of deubiquitylating enzymes in cancer is particularly understudied. We performed a Drosophila in vivo RNAi screen to identify deubiquitylating enzymes that modulate RasV12-induced hyperplastic growth. We identified the spliceosome core component Prp8 as a crucial regulator of Ras-, EGFR-, Notch- or RET-driven hyperplasia. Loss of prp8 function alone decreased cell proliferation, increased cell death, and affected cell differentiation and polarity. In hyperplasia, Prp8 supported tissue overgrowth independently of caspase-dependent cell death. The depletion of prp8 efficiently blocked Ras-, EGFR- and Notch-driven tumours but, in contrast, enhanced tumours that were driven by oncogenic RET, suggesting a context-specific role in hyperplasia. These data show, for the first time, that Prp8 regulates hyperplasia, and extend recent observations on the potential role of the spliceosome in cancer. Our findings suggest that targeting Prp8 could be beneficial in specific tumour types. Summary: Prp8 has been identified as a modulator of oncogenic growth in multiple Drosophila cancer models, which suggests the spliceosome as a potential context-dependent target in cancers.
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Affiliation(s)
- Cecilia H Fernández-Espartero
- Centre for Tumour Biology, Barts Cancer Institute, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, UK
| | - Alberto Rizzo
- Centre for Tumour Biology, Barts Cancer Institute, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, UK
| | - Alexander D Fulford
- Centre for Tumour Biology, Barts Cancer Institute, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, UK
| | - Julia Falo-Sanjuan
- Department of Physiology, Development and Neuroscience, University of Cambridge, Downing Street, Cambridge CB2 3DY, UK
| | - Damien Goutte-Gattat
- Centre for Tumour Biology, Barts Cancer Institute, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, UK
| | - Paulo S Ribeiro
- Centre for Tumour Biology, Barts Cancer Institute, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, UK
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Lv JX, Zhou J, Tong RQ, Wang B, Chen XL, Zhuang YY, Xia F, Wei XD. Hypoxia‑induced miR‑210 contributes to apoptosis of mouse spermatocyte GC‑2 cells by targeting Kruppel‑like factor 7. Mol Med Rep 2018; 19:271-279. [PMID: 30431115 PMCID: PMC6297767 DOI: 10.3892/mmr.2018.9644] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Accepted: 09/14/2018] [Indexed: 11/18/2022] Open
Abstract
The aim of the present study was to investigate the underlying mechanisms of hypoxia-induced microRNA (miR)-210 effects on mouse GC-2spd (GC-2) cells. GC-2 cells were subjected to hypoxia or normoxia for 12, 24, 48 and 72 h. Apoptosis of GC-2 cells was detected using terminal deoxynucleotidyl-transferase-meditated dUTP nick end labeling and flow cytometry. Reverse transcription-quantitative polymerase chain reaction was performed to analyze the expression of miR-210. Hypoxia-inducible factor-1α (HIF-1α), caspase-3, B-cell lymphoma 2, apoptosis regulator BAX and Kruppel-like factor 7 (KLF7) protein expression levels were detected by western blotting. Luciferase reporter gene assays were used to assess the targeting effects of miR-210 on KLF7. Hypoxia induced GC-2 cell apoptosis and increased the expression of HIF-1α and pro-apoptotic proteins; however, decreased anti-apoptotic protein expression levels. Furthermore, hypoxia resulted in the upregulation of miR-210 in GC-2 cells. HIF-1α and miR-210 were involved in the apoptosis of GC-2 cells by mediating the expression of apoptosis-associated proteins. Furthermore, KLF7 was directly targeted by miR-210 to influence the apoptosis of GC-2 cells subjected to hypoxia. The results suggested that hypoxia-induced miR-210 stimulated the activation of the apoptosis signaling pathway and contributed to the apoptosis of GC-2 cells by targeting KLF7.
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Affiliation(s)
- Jin-Xing Lv
- Reproductive Medicine Center, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| | - Jian Zhou
- Reproductive Medicine Center, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| | - Rui-Qing Tong
- Reproductive Medicine Center, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| | - Bin Wang
- Department of Urology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| | - Xue-Lei Chen
- Department of Urology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| | - Yan-Yan Zhuang
- Reproductive Medicine Center, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| | - Fei Xia
- Reproductive Medicine Center, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| | - Xue-Dong Wei
- Department of Urology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
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43
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RNA processing in the male germline: Mechanisms and implications for fertility. Semin Cell Dev Biol 2018; 79:80-91. [DOI: 10.1016/j.semcdb.2017.10.006] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 10/04/2017] [Accepted: 10/09/2017] [Indexed: 12/22/2022]
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Yuan HF, Zhao K, Zang Y, Liu CY, Hu ZY, Wei JJ, Zhou T, Li Y, Zhang HP. Effect of folate deficiency on promoter methylation and gene expression of Esr1, Cav1, and Elavl1, and its influence on spermatogenesis. Oncotarget 2018; 8:24130-24141. [PMID: 28445960 PMCID: PMC5421833 DOI: 10.18632/oncotarget.15731] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 02/08/2017] [Indexed: 11/25/2022] Open
Abstract
This study aims to investigate the effect of folate deficiency on the male reproductive function and the underlying mechanism. A total of 269 screened participants from 421 recruitments were enrolled in this study. An animal model of folate deficiency was constructed. Folate concentration was measured in the ejaculate, and its association with semen parameters was then determined. The expression and promoter methylation status of ESR1, CAV1, and ELAVL1 were also evaluated. Results showed that seminal plasma folate level was significantly lower among subjects with azoospermia than those with normozoospermia. Low folate level was significantly correlated with low sperm concentration in men with normozoospermia. Folate deficiency significantly reduced the expression of ESR1, CAV1, and ELAVL1, which are critical to spermatogenesis. However, low folate levels did not increase the methylation levels of the promoter regions of ESR1, CAV1, and ELAVL1 in human sperm DNA. Thus, folate deficiency impairs spermatogenesis may partly due to inhibiting the expression of these genes. Thus future research should determine the significance of sufficient folate status in male fertilization and subsequent pregnancy outcomes.
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Affiliation(s)
- Hong-Fang Yuan
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Kai Zhao
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Center of Human Reproduction, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yu Zang
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chun-Yan Liu
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhi-Yong Hu
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jia-Jing Wei
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ting Zhou
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ying Li
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hui-Ping Zhang
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Center of Human Reproduction, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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45
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Fecundity in an infertile man with r(15) – a challenge to the current paradigm. Reprod Biomed Online 2018; 36:210-218. [DOI: 10.1016/j.rbmo.2017.10.115] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2017] [Revised: 10/29/2017] [Accepted: 10/31/2017] [Indexed: 12/16/2022]
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46
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Alternative Splicing in Genetic Diseases: Improved Diagnosis and Novel Treatment Options. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2017; 335:85-141. [PMID: 29305015 DOI: 10.1016/bs.ircmb.2017.07.008] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Alternative splicing is an important mechanism to regulate gene expression and to expand the repertoire of gene products in order to accommodate an increase in complexity of multicellular organisms. It needs to be precisely regulated, which is achieved via RNA structure, splicing factors, transcriptional regulation, and chromatin. Changes in any of these factors can lead to disease. These may include the core spliceosome, splicing enhancer/repressor sequences and their interacting proteins, the speed of transcription by RNA polymerase II, and histone modifications. While the basic principle of splicing is well understood, it is still very difficult to predict splicing outcome, due to the multiple levels of regulation. Current molecular diagnostics mainly uses Sanger sequencing of exons, or next-generation sequencing of gene panels or the whole exome. Functional analysis of potential splicing variants is scarce, and intronic variants are often not considered. This likely results in underestimation of the percentage of splicing variants. Understanding how sequence variants may affect splicing is not only crucial for confirmation of diagnosis and for genetic counseling, but also for the development of novel treatment options. These include small molecules, transsplicing, antisense oligonucleotides, and gene therapy. Here we review the current state of molecular mechanisms of splicing regulation and how deregulation can lead to human disease, diagnostics to detect splicing variants, and novel treatment options based on splicing correction.
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47
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Isobaric tags for relative and absolute quantification-based proteomic analysis of testis biopsies in rhesus monkeys treated with transient scrotal hyperthermia. Oncotarget 2017; 8:85909-85925. [PMID: 29156766 PMCID: PMC5689656 DOI: 10.18632/oncotarget.20719] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Accepted: 07/29/2017] [Indexed: 11/25/2022] Open
Abstract
This study aimed to examine the cellular and molecular events that occur in rhesus monkey testes after scrotal hyperthermia. Eight male adult rhesus monkeys were subjected to scrotal hyperthermia at 43°C for 30 min daily for 6 consecutive days. Sperm concentration, reproductive hormones, and testis histology were examined before hyperthermia (day 0), and at 8, 15, 30, 45, 60, 75, and 90 days after the initiation of hyperthermia. iTRAQ-based proteomic analysis was conducted on testicular tissues collected on days 0, 8, and 60 to identify differentially expressed proteins at the early and recovery stages of testicular damage. The sperm concentration was significantly decreased at days 30 and 45 after treatment (p < 0.01) and recovered to baseline at day 60. When compared with day 0, 101 and 24 differentially expressed proteins were identified at days 8 and 60 after heat treatment, respectively. The molecular functions of the differentially expressed proteins at day 8 were mainly nucleic acid binding, unfolded protein binding, nucleotide binding, and nucleoside phosphate binding. Spliceosome was enriched as the most significant pathway at day 8. CIRBP, PSIP1, Sam68, and Decorin were validated and found to be consistent with the proteomic data, indicating the reliability of the proteomic profiles identified in this study. In summary, we suggest that the proteins identified in this study may play important roles in heat-induced spermatogenic impairment. Some of these proteins, such as CIRBP, PSIP1, Sam68, and Decorin, may be early molecular targets responsible for spermatogenesis suppression induced by heat treatment.
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Yin J, Ni B, Liao WG, Gao YQ. Hypoxia-induced apoptosis of mouse spermatocytes is mediated by HIF-1α through a death receptor pathway and a mitochondrial pathway. J Cell Physiol 2017; 233:1146-1155. [PMID: 28444885 DOI: 10.1002/jcp.25974] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Accepted: 04/24/2017] [Indexed: 12/19/2022]
Abstract
Hypoxia in vivo induces oligozoospermia, azoospermia, and degeneration of the germinal epithelium, but the underlying molecular mechanism of this induction is not fully clarified. The aim of this study was to investigate the role of the death receptor pathway and the mitochondrial pathway in hypoxia-induced apoptosis of mouse GC-2spd (GC-2) cells and the relationship between HIF-1α and apoptosis of GC-2 cells induced by hypoxia. GC-2 cells were subjected to 1% oxygen for 48 hr. Apoptosis was detected by flow cytometry, TUNEL staining, LDH, caspase-3/8/9 in the absence and presence of HIF-1α siRNA. The protein levels of apoptosis-related markers were determined by Western blot in the presence and absence of HIF-1α siRNA. Mitochondrial transmembrane potential change was observed by in situ JC-1 staining. Cell viability was assessed upon treatment of caspase-8 and 9 inhibitors. The results indicated that hypoxia at 1% oxygen for 48 hr induced apoptosis of GC-2 cells. A prolonged exposure of GC-2 cells to hypoxic conditions caused downregulation of c-FLIP, Dc R2 and Bcl-2 and upregulation of DR5 , TRAIL, Fas, p53, and Bax, with an overproduction of caspase-3/8/9. Moreover, hypoxia at this level had an effect on mitochondrial depolarization. In addition, specific inhibitors of caspase-8/9 partially suppressed hypoxia-induced GC-2 cell apoptosis, and the anti-apoptotic effects of the caspase inhibitors were additive. Of note, HIF-1α knockdown attenuated hypoxia and induced apoptosis of GC-2 cells. In conclusion, our data suggest that the death receptor pathway and mitochondrial pathway, which are likely mediated by HIF-1α, contribute to hypoxia-induced GC-2 cell apoptosis.
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Affiliation(s)
- Jun Yin
- Department of Pathophysiology and High Altitude Pathology/Key Laboratory of High Altitude Environment Medicine (Third Military Medical University), Ministry of Education/Key Laboratory of High Altitude Medicine, College of High Altitude Military Medicine, Third Military Medical University, Chongqing, PR China
| | - Bing Ni
- Department of Pathophysiology and High Altitude Pathology/Key Laboratory of High Altitude Environment Medicine (Third Military Medical University), Ministry of Education/Key Laboratory of High Altitude Medicine, College of High Altitude Military Medicine, Third Military Medical University, Chongqing, PR China
| | - Wei-Gong Liao
- Department of Pathophysiology and High Altitude Pathology/Key Laboratory of High Altitude Environment Medicine (Third Military Medical University), Ministry of Education/Key Laboratory of High Altitude Medicine, College of High Altitude Military Medicine, Third Military Medical University, Chongqing, PR China
| | - Yu-Qi Gao
- Institute of Medicine and Hygienic Equipment for High Altitude Region/Key Laboratory of High Altitude Environment Medicine (Third Military Medical University), Ministry of Education/Key Laboratory of High Altitude Medicine, College of High Altitude Military Medicine, Third Military Medical University, Chongqing, PR China
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49
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Siddall NA, Hime GR. A Drosophila toolkit for defining gene function in spermatogenesis. Reproduction 2017; 153:R121-R132. [PMID: 28073824 DOI: 10.1530/rep-16-0347] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Revised: 12/15/2016] [Accepted: 01/10/2017] [Indexed: 12/29/2022]
Abstract
Expression profiling and genomic sequencing methods enable the accumulation of vast quantities of data that relate to the expression of genes during the maturation of male germ cells from primordial germ cells to spermatozoa and potential mutations that underlie male infertility. However, the determination of gene function in specific aspects of spermatogenesis or linking abnormal gene function with infertility remain rate limiting, as even in an era of CRISPR analysis of gene function in mammalian models, this still requires considerable resources and time. Comparative developmental biology studies have shown the remarkable conservation of spermatogenic developmental processes from insects to vertebrates and provide an avenue of rapid assessment of gene function to inform the potential roles of specific genes in rodent and human spermatogenesis. The vinegar fly, Drosophila melanogaster, has been used as a model organism for developmental genetic studies for over one hundred years, and research with this organism produced seminal findings such as the association of genes with chromosomes, the chromosomal basis for sexual identity, the mutagenic properties of X-irradiation and the isolation of the first tumour suppressor mutations. Drosophila researchers have developed an impressive array of sophisticated genetic techniques for analysis of gene function and genetic interactions. This review focuses on how these techniques can be utilised to study spermatogenesis in an organism with a generation time of 9 days and the capacity to introduce multiple mutant alleles into an individual organism in a relatively short time frame.
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Affiliation(s)
- N A Siddall
- Department of Anatomy and NeuroscienceThe University of Melbourne, Parkville, Victoria, Australia
| | - G R Hime
- Department of Anatomy and NeuroscienceThe University of Melbourne, Parkville, Victoria, Australia
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50
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Hoskins JW, Ibrahim A, Emmanuel MA, Manmiller SM, Wu Y, O’Neill M, Jia J, Collins I, Zhang M, Thomas JV, Rost LM, Das S, Parikh H, Haake JM, Matters GL, Kurtz RC, Bamlet WR, Klein A, Stolzenberg-Solomon R, Wolpin BM, Yarden R, Wang Z, Smith J, Olson SH, Andresson T, Petersen GM, Amundadottir LT. Functional characterization of a chr13q22.1 pancreatic cancer risk locus reveals long-range interaction and allele-specific effects on DIS3 expression. Hum Mol Genet 2016; 25:4726-4738. [PMID: 28172817 PMCID: PMC5815622 DOI: 10.1093/hmg/ddw300] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Revised: 07/08/2016] [Accepted: 08/26/2016] [Indexed: 12/20/2022] Open
Abstract
Genome-wide association studies (GWAS) have identified multiple common susceptibility loci for pancreatic cancer. Here we report fine-mapping and functional analysis of one such locus residing in a 610 kb gene desert on chr13q22.1 (marked by rs9543325). The closest candidate genes, KLF5, KLF12, PIBF1, DIS3 and BORA, range in distance from 265-586 kb. Sequencing three sub-regions containing the top ranked SNPs by imputation P-value revealed a 30 bp insertion/deletion (indel) variant that was significantly associated with pancreatic cancer risk (rs386772267, P = 2.30 × 10-11, OR = 1.22, 95% CI 1.15-1.28) and highly correlated to rs9543325 (r2 = 0.97 in the 1000 Genomes EUR population). This indel was the most significant cis-eQTL variant in a set of 222 histologically normal pancreatic tissue samples (β = 0.26, P = 0.004), with the insertion (risk-increasing) allele associated with reduced DIS3 expression. DIS3 encodes a catalytic subunit of the nuclear RNA exosome complex that mediates RNA processing and decay, and is mutated in several cancers. Chromosome conformation capture revealed a long range (570 kb) physical interaction between a sub-region of the risk locus, containing rs386772267, and a region ∼6 kb upstream of DIS3 Finally, repressor regulatory activity and allele-specific protein binding by transcription factors of the TCF/LEF family were observed for the risk-increasing allele of rs386772267, indicating that expression regulation at this risk locus may be influenced by the Wnt signaling pathway. In conclusion, we have identified a putative functional indel variant at chr13q22.1 that associates with decreased DIS3 expression in carriers of pancreatic cancer risk-increasing alleles, and could therefore affect nuclear RNA processing and/or decay.
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Affiliation(s)
- Jason W. Hoskins
- Laboratory of Translational Genomics, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Abdisamad Ibrahim
- Laboratory of Translational Genomics, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Mickey A. Emmanuel
- Laboratory of Translational Genomics, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Sarah M. Manmiller
- Laboratory of Translational Genomics, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Yinglun Wu
- Laboratory of Translational Genomics, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Maura O’Neill
- Protein Characterization Laboratory, Frederick National Laboratory for Cancer Research, Frederick, MD, USA
| | - Jinping Jia
- Laboratory of Translational Genomics, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Irene Collins
- Laboratory of Translational Genomics, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Mingfeng Zhang
- Laboratory of Translational Genomics, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Janelle V. Thomas
- Laboratory of Translational Genomics, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Lauren M. Rost
- Laboratory of Translational Genomics, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Sudipto Das
- Protein Characterization Laboratory, Frederick National Laboratory for Cancer Research, Frederick, MD, USA
| | - Hemang Parikh
- Laboratory of Translational Genomics, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
- Health Informatics Institute, Morsani College of Medicine, University of South Florida, Tampa, FL, USA
| | - Jefferson M. Haake
- Department of Human Science, NHS, Georgetown University Medical Center, NW, Washington DC, USA
| | - Gail L. Matters
- Department of Biochemistry and Molecular Biology, The Pennsylvania State University College of Medicine, Hershey, PA, USA
| | - Robert C. Kurtz
- Department of Medicine, Memorial Sloan-Kettering Cancer Center, New York, New York, USA
| | - William R. Bamlet
- Department of Health Sciences Research, Mayo Clinic, Rochester, Minnesota, USA
| | - Alison Klein
- Department of Oncology, the Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
- Department of Epidemiology, the Bloomberg School of Public Health, Baltimore, Maryland, USA
| | - Rachael Stolzenberg-Solomon
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Brian M. Wolpin
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA
| | - Ronit Yarden
- Department of Human Science, NHS, Georgetown University Medical Center, NW, Washington DC, USA
| | - Zhaoming Wang
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
- Department of Computational Biology, St. Jude Children’s Research Hospital, Memphis, TN, USA
| | - Jill Smith
- Department of Medicine, Georgetown University Hospital, Washington, DC, and Department of Medicine, Penn State University College of Medicine, Hershey PA, USA
| | - Sara H. Olson
- Department of Epidemiology and Biostatistics, Memorial Sloan-Kettering Cancer Center, New York, NY, USA
| | - Thorkell Andresson
- Protein Characterization Laboratory, Frederick National Laboratory for Cancer Research, Frederick, MD, USA
| | - Gloria M. Petersen
- Department of Health Sciences Research, Mayo Clinic, Rochester, Minnesota, USA
| | - Laufey T. Amundadottir
- Laboratory of Translational Genomics, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
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