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Rindone GM, Dasso ME, Centola CL, Sobarzo CM, Galardo MN, Meroni SB, Riera MF. Effect of Metformin on Sertoli Cell Fatty Acid Metabolism and Blood-Testis Barrier Formation. BIOLOGY 2024; 13:330. [PMID: 38785812 PMCID: PMC11117697 DOI: 10.3390/biology13050330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 05/06/2024] [Accepted: 05/08/2024] [Indexed: 05/25/2024]
Abstract
Sertoli cells (SCs) are essential to maintaining germ cell development. Metformin, the main pharmacologic treatment for pediatric type 2 diabetes, is administered to children during SC maturation. The present study aimed to analyze whether metformin affects SC energy metabolism and blood-testis barrier (BTB) integrity. Primary SC cultures were used for the in vitro studies. In vivo effects were studied in Sprague-Dawley rats treated with 200 mg/kg metformin from Pnd14 to Pnd30. Metformin decreased fatty acid oxidation and increased 3-hydroxybutyrate production in vitro. Moreover, it decreased the transepithelial electrical resistance across the monolayer and induced ZO-1 redistribution, suggesting an alteration of cell junctions. In vivo, a mild but significant increase in BTB permeability and ZO-1 expression was observed in the metformin group, without changes in testicular histology and meiosis progression. Additionally, adult rats that received metformin treatment during the juvenile period showed no alteration in BTB permeability or daily sperm production. In conclusion, metformin exposure may affect BTB permeability in juvenile rats, but this seems not to influence spermatogenesis progression. Considering the results obtained in adult animals, it is possible to speculate that metformin treatment during the juvenile period does not affect testicular function in adulthood.
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Affiliation(s)
- Gustavo Marcelo Rindone
- Centro de Investigaciones Endocrinológicas “Dr. César Bergadá” (CEDIE), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), FEI–División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Buenos Aires C1425EFD, Argentina; (G.M.R.); (M.E.D.); (C.L.C.); (M.N.G.); (S.B.M.)
| | - Marina Ercilia Dasso
- Centro de Investigaciones Endocrinológicas “Dr. César Bergadá” (CEDIE), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), FEI–División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Buenos Aires C1425EFD, Argentina; (G.M.R.); (M.E.D.); (C.L.C.); (M.N.G.); (S.B.M.)
| | - Cecilia Lucia Centola
- Centro de Investigaciones Endocrinológicas “Dr. César Bergadá” (CEDIE), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), FEI–División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Buenos Aires C1425EFD, Argentina; (G.M.R.); (M.E.D.); (C.L.C.); (M.N.G.); (S.B.M.)
| | - Cristian Marcelo Sobarzo
- Instituto de Investigaciones Biomédicas (INBIOMED), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Facultad de Medicina, Universidad de Buenos Aires (UBA), Buenos Aires C1121ABG, Argentina;
| | - María Noel Galardo
- Centro de Investigaciones Endocrinológicas “Dr. César Bergadá” (CEDIE), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), FEI–División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Buenos Aires C1425EFD, Argentina; (G.M.R.); (M.E.D.); (C.L.C.); (M.N.G.); (S.B.M.)
| | - Silvina Beatriz Meroni
- Centro de Investigaciones Endocrinológicas “Dr. César Bergadá” (CEDIE), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), FEI–División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Buenos Aires C1425EFD, Argentina; (G.M.R.); (M.E.D.); (C.L.C.); (M.N.G.); (S.B.M.)
| | - María Fernanda Riera
- Centro de Investigaciones Endocrinológicas “Dr. César Bergadá” (CEDIE), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), FEI–División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Buenos Aires C1425EFD, Argentina; (G.M.R.); (M.E.D.); (C.L.C.); (M.N.G.); (S.B.M.)
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Yao B, Tan Y, An K, Kang Y, Hou Q, Zhang D, Su J. Seasonal patterns of miRNA and mRNA expression profiles in the testes of plateau zokors (Eospalax baileyi). COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY. PART D, GENOMICS & PROTEOMICS 2023; 48:101143. [PMID: 37696166 DOI: 10.1016/j.cbd.2023.101143] [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: 04/29/2023] [Revised: 08/02/2023] [Accepted: 09/04/2023] [Indexed: 09/13/2023]
Abstract
The gonads of seasonal breeding animals undergo periodic annual changes in morphology, physiological hormones, and gene expression levels. To clarify the regulatory mechanism of miRNAs in the seasonal testicular development and spermatogenesis of plateau zokors, the miRNA expression profiles in their testicles during breeding and non-breeding seasons were analyzed. In total, 447 miRNAs, including 366, 81, and 167 known, novel, and differentially expressed (DE) miRNAs, respectively, were determined in the testes. Compared to the non-breeding season, 90 DE miRNAs were upregulated and 77 DE miRNAs were downregulated during the breeding season. By analysing the miRNA and mRNA expression profiles, we predicted 2096 significant target mRNAs. According to the miRNA-mRNA interaction network, target mRNAs with DE miRNAs were related to testicular development and spermatogenesis. GO indicated that target mRNAs were enriched in spermatogenesis, cell differentiation, multicellular biological development, and flagellated sperm movement and were associated with regulating testicular development and spermatogenesis. KEGG suggested that target mRNAs were enriched in lipid and fructose metabolism and provided energy and material for spermatogenesis. The target mRNA of rno-miR-24-3p was determined to be Polyubiquitin-B (UBB). Our results provide a reference for revealing the mechanism by which miRNAs regulate testicular development and spermatogenesis in plateau zokors, which has important implications for understanding the regulation of seasonal reproduction in animals.
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Affiliation(s)
- Baohui Yao
- College of Grassland Science, Key Laboratory of Grassland Ecosystem (Ministry of Education), Gansu Agricultural University, Lanzhou 730070, China; Gansu Agricultural University-Massey University Research Centre for Grassland Biodiversity, Gansu Agricultural University, Lanzhou 730070, China
| | - Yuchen Tan
- College of Grassland Science, Key Laboratory of Grassland Ecosystem (Ministry of Education), Gansu Agricultural University, Lanzhou 730070, China; Gansu Agricultural University-Massey University Research Centre for Grassland Biodiversity, Gansu Agricultural University, Lanzhou 730070, China
| | - Kang An
- College of Grassland Science, Key Laboratory of Grassland Ecosystem (Ministry of Education), Gansu Agricultural University, Lanzhou 730070, China; Gansu Agricultural University-Massey University Research Centre for Grassland Biodiversity, Gansu Agricultural University, Lanzhou 730070, China
| | - Yukun Kang
- College of Grassland Science, Key Laboratory of Grassland Ecosystem (Ministry of Education), Gansu Agricultural University, Lanzhou 730070, China; Gansu Agricultural University-Massey University Research Centre for Grassland Biodiversity, Gansu Agricultural University, Lanzhou 730070, China
| | - Qiqi Hou
- College of Grassland Science, Key Laboratory of Grassland Ecosystem (Ministry of Education), Gansu Agricultural University, Lanzhou 730070, China; Gansu Agricultural University-Massey University Research Centre for Grassland Biodiversity, Gansu Agricultural University, Lanzhou 730070, China
| | - Degang Zhang
- College of Grassland Science, Key Laboratory of Grassland Ecosystem (Ministry of Education), Gansu Agricultural University, Lanzhou 730070, China; Gansu Agricultural University-Massey University Research Centre for Grassland Biodiversity, Gansu Agricultural University, Lanzhou 730070, China
| | - Junhu Su
- College of Grassland Science, Key Laboratory of Grassland Ecosystem (Ministry of Education), Gansu Agricultural University, Lanzhou 730070, China; Gansu Agricultural University-Massey University Research Centre for Grassland Biodiversity, Gansu Agricultural University, Lanzhou 730070, China.
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3
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Yao B, Kang Y, An K, Tan Y, Hou Q, Zhang D, Su J. Comparative analysis of microRNA and messengerRNA expression profiles in plateau zokor testicular cells under reproductive suppression. Front Vet Sci 2023; 10:1184120. [PMID: 37275617 PMCID: PMC10235463 DOI: 10.3389/fvets.2023.1184120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Accepted: 04/26/2023] [Indexed: 06/07/2023] Open
Abstract
Introduction Reproductive suppression is an adaptive strategy that affects the success rate and reproductive efficiency in animals, which in turn affects population continuation and evolution. However, no studies on the miRNAs in testicular development and spermatogenesis regulatory mechanisms under reproductive suppression have been reported. Methods In this study, the differentially expressed (DE) miRNAs, miRNA-mRNA interaction network and function of the plateau zokor testicular cells of non-breeders and breeders during the breeding season were comprehensively analyzed by transcriptomics. Results In total, 381 known and 94 novel miRNAs were determined. Compared with that in the breeders, 70 downregulated and 68 upregulated DE miRNAs were identified in the non-breeders. We predicted 1670 significant target mRNAs by analyzing the miRNA and mRNA expression profiles. According to the miRNA-mRNA interaction network, the target mRNAs of the DE miRNAs were related to testicular development and spermatogenesis. GO indicate that the target mRNAs were related to testicular development and spermatogenesis. KEGG indicate that pathways of target mRNAs enrichment related to testicular development, spermatogenesis, and energy metabolism. PROK2 was determined as the target mRNA of rno-miR-143-3p. Discussion Our study offers a basis for the regulatory mechanisms of miRNAs in testicular development and spermatogenesis in plateau zokor under reproductive suppression and offers a reference for reproductive regulation.
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Affiliation(s)
- Baohui Yao
- Key Laboratory of Grassland Ecosystem (Ministry of Education), College of Grassland Science, Gansu Agricultural University, Lanzhou, China
- Gansu Agricultural University-Massey University Research Centre for Grassland Biodiversity, Gansu Agricultural University, Lanzhou, China
| | - Yukun Kang
- Key Laboratory of Grassland Ecosystem (Ministry of Education), College of Grassland Science, Gansu Agricultural University, Lanzhou, China
- Gansu Agricultural University-Massey University Research Centre for Grassland Biodiversity, Gansu Agricultural University, Lanzhou, China
| | - Kang An
- Key Laboratory of Grassland Ecosystem (Ministry of Education), College of Grassland Science, Gansu Agricultural University, Lanzhou, China
- Gansu Agricultural University-Massey University Research Centre for Grassland Biodiversity, Gansu Agricultural University, Lanzhou, China
| | - Yuchen Tan
- Key Laboratory of Grassland Ecosystem (Ministry of Education), College of Grassland Science, Gansu Agricultural University, Lanzhou, China
- Gansu Agricultural University-Massey University Research Centre for Grassland Biodiversity, Gansu Agricultural University, Lanzhou, China
| | - Qiqi Hou
- Key Laboratory of Grassland Ecosystem (Ministry of Education), College of Grassland Science, Gansu Agricultural University, Lanzhou, China
- Gansu Agricultural University-Massey University Research Centre for Grassland Biodiversity, Gansu Agricultural University, Lanzhou, China
| | - Degang Zhang
- Key Laboratory of Grassland Ecosystem (Ministry of Education), College of Grassland Science, Gansu Agricultural University, Lanzhou, China
- Gansu Agricultural University-Massey University Research Centre for Grassland Biodiversity, Gansu Agricultural University, Lanzhou, China
| | - Junhu Su
- Key Laboratory of Grassland Ecosystem (Ministry of Education), College of Grassland Science, Gansu Agricultural University, Lanzhou, China
- Gansu Agricultural University-Massey University Research Centre for Grassland Biodiversity, Gansu Agricultural University, Lanzhou, China
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Yao B, An K, Kang Y, Tan Y, Zhang D, Su J. Reproductive Suppression Caused by Spermatogenic Arrest: Transcriptomic Evidence from a Non-Social Animal. Int J Mol Sci 2023; 24:ijms24054611. [PMID: 36902039 PMCID: PMC10003443 DOI: 10.3390/ijms24054611] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 02/12/2023] [Accepted: 02/17/2023] [Indexed: 03/02/2023] Open
Abstract
Reproductive suppression is an adaptive strategy in animal reproduction. The mechanism of reproductive suppression has been studied in social animals, providing an essential basis for understanding the maintenance and development of population stability. However, little is known about it in solitary animals. The plateau zokor is a dominant, subterranean, solitary rodent in the Qinghai-Tibet Plateau. However, the mechanism of reproductive suppression in this animal is unknown. We perform morphological, hormonal, and transcriptomic assays on the testes of male plateau zokors in breeders, in non-breeders, and in the non-breeding season. We found that the testes of non-breeders are smaller in weight and have lower serum testosterone levels than those of breeders, and the mRNA expression levels of the anti-Müllerian hormone (AMH) and its transcription factors are significantly higher in non-breeder testes. Genes related to spermatogenesis are significantly downregulated in both meiotic and post-meiotic stages in non-breeders. Genes related to the meiotic cell cycle, spermatogenesis, flagellated sperm motility, fertilization, and sperm capacitation are significantly downregulated in non-breeders. Our data suggest that high levels of AMH may lead to low levels of testosterone, resulting in delayed testicular development, and physiological reproductive suppression in plateau zokor. This study enriches our understanding of reproductive suppression in solitary mammals and provides a basis for the optimization of managing this species.
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Affiliation(s)
- Baohui Yao
- College of Grassland Science, Key Laboratory of Grassland Ecosystem (Ministry of Education), Gansu Agricultural University, Lanzhou 730070, China
- Massey University Research Centre for Grassland Biodiversity, Gansu Agricultural University, Lanzhou 730070, China
| | - Kang An
- College of Grassland Science, Key Laboratory of Grassland Ecosystem (Ministry of Education), Gansu Agricultural University, Lanzhou 730070, China
- Massey University Research Centre for Grassland Biodiversity, Gansu Agricultural University, Lanzhou 730070, China
| | - Yukun Kang
- College of Grassland Science, Key Laboratory of Grassland Ecosystem (Ministry of Education), Gansu Agricultural University, Lanzhou 730070, China
- Massey University Research Centre for Grassland Biodiversity, Gansu Agricultural University, Lanzhou 730070, China
| | - Yuchen Tan
- College of Grassland Science, Key Laboratory of Grassland Ecosystem (Ministry of Education), Gansu Agricultural University, Lanzhou 730070, China
- Massey University Research Centre for Grassland Biodiversity, Gansu Agricultural University, Lanzhou 730070, China
| | - Degang Zhang
- College of Grassland Science, Key Laboratory of Grassland Ecosystem (Ministry of Education), Gansu Agricultural University, Lanzhou 730070, China
- Massey University Research Centre for Grassland Biodiversity, Gansu Agricultural University, Lanzhou 730070, China
| | - Junhu Su
- College of Grassland Science, Key Laboratory of Grassland Ecosystem (Ministry of Education), Gansu Agricultural University, Lanzhou 730070, China
- Massey University Research Centre for Grassland Biodiversity, Gansu Agricultural University, Lanzhou 730070, China
- Correspondence:
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Gorga A, Rindone GM, Dasso ME, Centola CL, Pellizzari EH, Camberos MC, Toneatto J, Riera MF, Galardo MN, Meroni SB. Simultaneous regulation of lactate production and fatty acid metabolism by Resveratrol in rat Sertoli cells. Biochimie 2022; 208:75-85. [PMID: 36528184 DOI: 10.1016/j.biochi.2022.12.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 11/20/2022] [Accepted: 12/12/2022] [Indexed: 12/23/2022]
Abstract
Sertoli cells provide structural and nutritional support for germ cell development. They actively metabolize glucose and convert it into lactate, which is an important source of energy for germ cells. They also oxidize fatty acids (FA), stored as triacylglycerides (TAGs) within lipid droplets (LD), to fulfill their own energy requirements. So, the combined regulation of lactate production and FA metabolism may be relevant to the physiology of seminiferous tubules. Resveratrol (RSV) is a nutritional supplement found primarily in red grape skin that exhibits multiple beneficial health effects: it is cardioprotective, anti-inflammatory, anticancer, and antiaging. The aim of this study was to evaluate the effect of RSV in Sertoli cells lactate production and lipid metabolism. Sertoli cell cultures obtained from 20-day-old rats were incubated for different times with 10 or 50 μM RSV. RSV treatment increased lactate production and glucose consumption. These increments were accompanied by a rise in GLUT1 expression, which is the main glucose transporter in Sertoli cells. On the other hand, RSV decreased LD content and TAG levels. In addition, an increase in ATGL and FAT/CD36 mRNA levels was observed, which suggests augmented cytoplasmatic FA availability. RSV treatment also increased P-ACC levels, which might indicate that RSV promotes FA transport into the mitochondria to be oxidized. An enhanced expression of LCAD and MCAD, enzymes that participate in the oxidation of FA, was also observed. Altogether, these results suggest that RSV simultaneously regulates Sertoli cells lactate production and lipid metabolism, ensuring an adequate energetic balance both in germ and Sertoli cells.
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Affiliation(s)
- A Gorga
- Centro de Investigaciones Endocrinológicas, "Dr César Bergadá", CONICET-FEI-División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Argentina
| | - G M Rindone
- Centro de Investigaciones Endocrinológicas, "Dr César Bergadá", CONICET-FEI-División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Argentina
| | - M E Dasso
- Centro de Investigaciones Endocrinológicas, "Dr César Bergadá", CONICET-FEI-División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Argentina
| | - C L Centola
- Centro de Investigaciones Endocrinológicas, "Dr César Bergadá", CONICET-FEI-División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Argentina
| | - E H Pellizzari
- Centro de Investigaciones Endocrinológicas, "Dr César Bergadá", CONICET-FEI-División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Argentina
| | - M C Camberos
- Centro de Investigaciones Endocrinológicas, "Dr César Bergadá", CONICET-FEI-División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Argentina
| | - J Toneatto
- Instituto de Biología y Medicina Experimental (IBYME), CONICET, Buenos Aires, 1428, Argentina
| | - M F Riera
- Centro de Investigaciones Endocrinológicas, "Dr César Bergadá", CONICET-FEI-División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Argentina
| | - M N Galardo
- Centro de Investigaciones Endocrinológicas, "Dr César Bergadá", CONICET-FEI-División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Argentina
| | - S B Meroni
- Centro de Investigaciones Endocrinológicas, "Dr César Bergadá", CONICET-FEI-División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Argentina.
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Wu D, Zhang K, Khan FA, Pandupuspitasari NS, Liang W, Huang C, Sun F. Smtnl2 regulates apoptotic germ cell clearance and lactate metabolism in mouse Sertoli cells. Mol Cell Endocrinol 2022; 551:111664. [PMID: 35551947 DOI: 10.1016/j.mce.2022.111664] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 04/26/2022] [Accepted: 04/27/2022] [Indexed: 12/25/2022]
Abstract
Smtnl2 is an epithelial Smoothelin that binds to actin filaments and is crucial for epithelial morphogenesis. We examined the role of Smtnl2 in Sertoli cells, which undergo dynamic cytoskeleton reorganization to phagocytose apoptotic germ cells, a process known as efferocytosis. We observed Smtnl2 expression in primary mouse Sertoli cells and the 15P1 Sertoli cell line. Smtnl2 expression increased in 15P1 cells committing efferocytosis. Smtnl2-deficient Sertoli cells exhibited defective ability to engulf apoptotic germ cells and importantly, the phenomenon occurred in the setting of an unaffected maturation of phagosome. We demonstrated that Smtnl2 regulates the engulfment process through the function of branched actin nucleation protein ARP3, an actin assembly dictator. Intriguingly, a shift in glucose metabolism that restricts lactate production in Sertoli cells was induced upon Smtnl2 depletion, leading to the activation of downstream AMPK and AKT signaling. Using an in vivo RNAi approach, we found that silencing of Smtnl2 in testis triggers an obvious disruption in cytoskeleton architecture and blood-testis barrier integrity across seminiferous epithelium, causing the detachment of massive germ cells from their nest, as evidenced by their exfoliation into the lumen. Overall, our study identifies Smtnl2 as a determinant for Sertoli cells' functioning in supporting spermatogenesis.
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Affiliation(s)
- Di Wu
- Institute of Reproductive Medicine, School of Medicine, Nantong University, Nantong, 226001, China
| | - Kejia Zhang
- Institute of Reproductive Medicine, School of Medicine, Nantong University, Nantong, 226001, China
| | - Faheem Ahmed Khan
- Department of Zoology, Faculty of Science and Technology, University of Central Punjab, Lahore, 54782, Pakistan; Department of Transfusion Medicine and Clinical Microbiology, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, 10330, Thailand
| | | | - Wangzhang Liang
- Department of Pathology, Second Hospital of Shanxi Medical University, Shanxi, 030001, China
| | - Chunjie Huang
- 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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Francisco CM, Fischer LW, Vendramini V, de Oliva SU, Paccola CC, Miraglia SM. Resveratrol reverses male reproductive damage in rats exposed to nicotine during the intrauterine phase and breastfeeding. Andrology 2022; 10:951-972. [PMID: 35472028 DOI: 10.1111/andr.13183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 03/30/2022] [Accepted: 04/05/2022] [Indexed: 11/27/2022]
Abstract
BACKGROUND Nicotine leads to reproductive changes culminating in male infertility and subfertility. Resveratrol, a polyphenol, is a biological modulator. Sirtuin 1 (SIRT1) protein can positively act on male reproduction, and its expression can be affected by nicotine and modulated by resveratrol. OBJECTIVES The capability of resveratrol to reverse the reproductive damage in adult male offspring, which was nicotine-exposed during the intrauterine phase and breastfeeding, was investigated. MATERIALS AND METHODS Four groups were established with male offspring born from nicotine-exposed and non-exposed rat dams during pregnancy and lactation. Forty-eight male Wistar rats were distributed into four groups: sham control (SC), resveratrol (R), nicotine (N), and nicotine + resveratrol (NR). Rat dams of the N and NR offspring were exposed to nicotine (2 mg/kg/day) during pregnancy and lactation using a subcutaneously implanted minipump. The offspring of the R and NR groups received resveratrol (300 mg/kg of body weight, gavage) for 63 days from puberty. At 114 days of age, the male rats were euthanized. RESULTS Nicotine did not alter the body weight, biometry of reproductive organs, or quantitative sperm parameters of adult offspring but caused an evident worsening of all sperm qualitative parameters studied. Daily treatment with resveratrol from puberty up to adulthood improved all qualitative sperm parameters significantly, leading some of them close to the control values. Resveratrol also improved the morphological integrity and expression of SIRT1 in the seminiferous epithelium of nicotine-exposed offspring. CONCLUSION AND DISCUSSION Resveratrol reversed the male reproductive damage caused by nicotine. Nicotine crosses the blood-placental membrane and is present in the breast milk of mothers who smoke. Resveratrol restored the altered reproductive parameters in the male adult offspring that were nicotine-exposed during intrauterine life and breastfeeding. The epigenetic modulating action of resveratrol can be involved in this nicotine damage reversion. Resveratrol may be a promising candidate to be investigated regarding the adjuvant strategies in the treatment of male infertility.
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Affiliation(s)
| | | | - Vanessa Vendramini
- Department of Morphology and Genetics, Federal University of São Paulo, São Paulo, Brazil
| | - Samara Urban de Oliva
- Department of Morphology and Genetics, Federal University of São Paulo, São Paulo, Brazil
| | - Camila Cicconi Paccola
- Department of Morphology and Genetics, Federal University of São Paulo, São Paulo, Brazil
| | - Sandra Maria Miraglia
- Department of Morphology and Genetics, Federal University of São Paulo, São Paulo, Brazil
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8
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Dong Y, Xia Y, Yin J, Zhou D, Sang Y, Yan S, Liu Q, Li Y, Wang L, Zhao Y, Chen C, Huang Q, Wang Y, Abbasi MN, Yang H, Wang C, Li J, Tu Q, Yin J. Optimization, Characteristics, and Functions of Alkaline Phosphatase From Escherichia coli. Front Microbiol 2022; 12:761189. [PMID: 35265047 PMCID: PMC8899610 DOI: 10.3389/fmicb.2021.761189] [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: 08/19/2021] [Accepted: 12/21/2021] [Indexed: 11/13/2022] Open
Abstract
Weaning of piglets could increase the risk of infecting with Gram-negative pathogens, which can further bring about a wide array of virulence factors including the endotoxin lipopolysaccharide (LPS). It is in common practice that the use of antibiotics has been restricted in animal husbandry. Alkaline phosphatase (AKP) plays an important role in the detoxification and anti-inflammatory effects of LPS. This study investigated the protective effects of AKP on intestinal epithelial cells during inflammation. Site-directed mutagenesis was performed to modulate the AKP activity. The enzyme activity tests showed that the activity of the DelSigD153G-D330N mutants in B. subtilis was nearly 1,600 times higher than that of the wild-type AKP. In this study, an in vitro LPS-induced inflammation model using IPEC-J2 cells was established. The mRNA expression of interleukin-(IL-) 6, IL-8, and tumor necrosis factor-α (TNF-α) were extremely significantly downregulated, and that of ASC amino acid transporter 2 (ASCT-2), zonula occludens protein-1 (ZO-1), and occludin-3 (CLDN-3) were significantly upregulated by the DelSigD153G-D330N mutant compared with LPS treatment. This concludes the anti-inflammatory role of AKP on epithelial membrane, and we are hopeful that this research could achieve a sustainable development for the pig industry.
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Affiliation(s)
- Yachao Dong
- Hunan Provincial Key Laboratory of Animal Intestinal Function and Regulation, Hunan International Joint Laboratory of Animal Intestinal Ecology and Health, The National and Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, China.,CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences (CAS), Shenzhen, China
| | - Yandong Xia
- College of Life Sciences and Technology, Central South University of Forestry and Technology, Changsha, China
| | - Jie Yin
- Hunan Provincial Key Laboratory of Animal Intestinal Function and Regulation, Hunan International Joint Laboratory of Animal Intestinal Ecology and Health, The National and Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Diao Zhou
- Hunan Provincial Key Laboratory of Animal Intestinal Function and Regulation, Hunan International Joint Laboratory of Animal Intestinal Ecology and Health, The National and Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Yidan Sang
- Hunan Provincial Key Laboratory of Animal Intestinal Function and Regulation, Hunan International Joint Laboratory of Animal Intestinal Ecology and Health, The National and Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Sufeng Yan
- Hunan Provincial Key Laboratory of Animal Intestinal Function and Regulation, Hunan International Joint Laboratory of Animal Intestinal Ecology and Health, The National and Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Qingshu Liu
- Hunan Institute of Microbiology, Changsha, China
| | - Yaqi Li
- Hunan Provincial Key Laboratory of Animal Intestinal Function and Regulation, Hunan International Joint Laboratory of Animal Intestinal Ecology and Health, The National and Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Leli Wang
- Hunan Provincial Key Laboratory of Animal Intestinal Function and Regulation, Hunan International Joint Laboratory of Animal Intestinal Ecology and Health, The National and Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Ying Zhao
- Hunan Provincial Key Laboratory of Animal Intestinal Function and Regulation, Hunan International Joint Laboratory of Animal Intestinal Ecology and Health, The National and Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Cang Chen
- Hunan Provincial Key Laboratory of Animal Intestinal Function and Regulation, Hunan International Joint Laboratory of Animal Intestinal Ecology and Health, The National and Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Qiuyun Huang
- Hunan Provincial Key Laboratory of Animal Intestinal Function and Regulation, Hunan International Joint Laboratory of Animal Intestinal Ecology and Health, The National and Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Ying Wang
- Hunan Provincial Key Laboratory of Animal Intestinal Function and Regulation, Hunan International Joint Laboratory of Animal Intestinal Ecology and Health, The National and Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Muhammad Nazeer Abbasi
- CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences (CAS), Shenzhen, China
| | - Huansheng Yang
- Hunan Provincial Key Laboratory of Animal Intestinal Function and Regulation, Hunan International Joint Laboratory of Animal Intestinal Ecology and Health, The National and Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Chuni Wang
- Hunan Provincial Key Laboratory of Animal Intestinal Function and Regulation, Hunan International Joint Laboratory of Animal Intestinal Ecology and Health, The National and Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Jianzhong Li
- Hunan Provincial Key Laboratory of Animal Intestinal Function and Regulation, Hunan International Joint Laboratory of Animal Intestinal Ecology and Health, The National and Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Qiang Tu
- CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences (CAS), Shenzhen, China
| | - Jia Yin
- Hunan Provincial Key Laboratory of Animal Intestinal Function and Regulation, Hunan International Joint Laboratory of Animal Intestinal Ecology and Health, The National and Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, China
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9
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Xie J, Yu J, Zhang Z, Liu D, Fan Y, Wu Y, Ma H, Wang C, Hong Z. AMPK pathway is implicated in low level lead-induced pubertal testicular damage via disordered glycolysis. CHEMOSPHERE 2022; 291:132819. [PMID: 34762894 DOI: 10.1016/j.chemosphere.2021.132819] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 11/05/2021] [Accepted: 11/05/2021] [Indexed: 06/13/2023]
Abstract
Lead (Pb) is a common environmental pollutant. It has been demonstrated that long-term exposure to Pb at environmental levels may cause severe and irreversible damage to the male reproductive system. Of note, the impairments may originate from environmental Pb exposure at puberty. However, the underlying mechanisms remain unclear. In this study, we administrated male ICR mice with 200 mg/L Pb through the drinking water for 30-, 60-, 90-day from postnatal day 28. RNA sequencing was performed in the control group and the 90-day Pb exposure group. It was found that Pb exposure induced testicular damage, increased oxidative stress levels and poor sperm quality. Bioinformatic analysis displayed 199 genes up-regulated (such as GLUT1 and MCT4 genes) and 156 genes down-regulated (such as GLUT3, PFK1, LDH, CD147 and AMPK genes) in the Pb exposure group compared to the control group. Gene ontology (GO) terms enrichment analysis showed differentially expressed genes (DEGs) are involved in the protein catabolic, cellular catabolic and triglyceride catabolic processes. KEGG pathways enrichment analysis indicated glycerolipid metabolism and AMPK signaling were significantly enriched. Furthermore, experimental verification showed that Pb exposure induces energy dysmetabolism and decreases glycolysis products in mice testicular tissue. The AMPK signaling pathway was found to be deactivated after Pb exposure. The GLUT1, GLUT3, PFK1 and LDH proteins, which play a critical role in the cell glycolysis process, also were decreased. Besides, the expression of CD147 was decreased and the location of CD147 was altered upon Pb exposure. Together, these findings indicated the implication of the AMPK signaling pathway in Pb exposure induced pubertal testicular damage and poor sperm quality by inhibiting cell glycolysis and disordering lactate transportation in testicular cells.
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Affiliation(s)
- Jie Xie
- Department of Occupational Health and Toxicology, School of Public Health, Nanchang University, Nanchang, 330006, PR China; Department of Preventive Medicine, School of Public Health, Wuhan University, Wuhan, 430071, PR China; Jiangxi Provincial Key Laboratory of Preventive Medicine, Nanchang University, Nanchang, 330006, PR China
| | - Jun Yu
- Department of Preventive Medicine, School of Basic Medical Sciences, Hubei University of Science and Technology, Xianning, 437100, PR China
| | - Zhaoyu Zhang
- Department of Preventive Medicine, School of Public Health, Wuhan University, Wuhan, 430071, PR China
| | - Duanya Liu
- Department of Preventive Medicine, School of Public Health, Wuhan University, Wuhan, 430071, PR China
| | - Yongsheng Fan
- Department of Preventive Medicine, School of Public Health, Wuhan University, Wuhan, 430071, PR China
| | - Yu Wu
- Department of Preventive Medicine, School of Public Health, Wuhan University, Wuhan, 430071, PR China
| | - Haitao Ma
- Department of Preventive Medicine, School of Public Health, Wuhan University, Wuhan, 430071, PR China
| | - Chunhong Wang
- Department of Preventive Medicine, School of Public Health, Wuhan University, Wuhan, 430071, PR China.
| | - Zhidan Hong
- Reproductive Medicine Center, Zhongnan Hospital of Wuhan University, Wuhan, 430071, PR China.
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10
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Cai P, Feng Z, Feng N, Zou H, Gu J, Liu X, Liu Z, Yuan Y, Bian J. Activated AMPK promoted the decrease of lactate production in rat Sertoli cells exposed to Zearalenone. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 220:112367. [PMID: 34052758 DOI: 10.1016/j.ecoenv.2021.112367] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 05/20/2021] [Accepted: 05/23/2021] [Indexed: 06/12/2023]
Abstract
Zearalenone, which is ubiquitous in grains and animal feed, is a mycotoxin that can cause serious damage to animals and humans. Sertoli cells (SCs) can be used to study ZEA male reproductive toxicity in vitro. SCs provide energy for germ cells, where AMPK regulates intracellular energy. In order to explore the regulatory effect of AMPK on ZEA-induced lactate decline, we activated AMPK by AICAR and then inhibited AMPK by Compound C with ZEA-treated SCs for 24 h to detect intracellular lactate production-related indicators. Cell viability in the presence of 20 μmol/L ZEA and either 50 μmol/L AICAR or 5 μmol/L Compound C, respectively, did not damage SCs, and could effectively either activate or inhibit AMPK. Inhibition of AMPK promoted the production of pyruvate and lactate via increased expression of the glycolysis-related genes Pgam1 and the lactate production-related proteins GLUT1, LDHA, and MCT4. Activating AMPK inhibited the production of lactate and pyruvate by suppressing the expression of glycolysis-related genes HK1, Pgam1, and Gpi1 and that of lactate production-related proteins LDHA and MCT4. Zearalenone destroys the energy balance in SCs, activates P-AMPK, which inhibit the production of lactate and pyruvate in SCs. This also leads to the decrease of energy supply of SCs to spermatogenic cells, damages to reproductive system.
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Affiliation(s)
- Peirong Cai
- College of Veterinary Medicine, Yangzhou University, 12 Wenhui East Road, Yangzhou 225009, Jiangsu, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou 225009, Jiangsu, China; Joint International Research Laboratory of Agriculture and Agri-Product Safety of the Ministry of Education of China, Yangzhou University, Yangzhou 225009, Jiangsu, China
| | - Zhiheng Feng
- College of Veterinary Medicine, Yangzhou University, 12 Wenhui East Road, Yangzhou 225009, Jiangsu, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou 225009, Jiangsu, China
| | - Nannan Feng
- College of Veterinary Medicine, Yangzhou University, 12 Wenhui East Road, Yangzhou 225009, Jiangsu, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou 225009, Jiangsu, China
| | - Hui Zou
- College of Veterinary Medicine, Yangzhou University, 12 Wenhui East Road, Yangzhou 225009, Jiangsu, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou 225009, Jiangsu, China
| | - Jianhong Gu
- College of Veterinary Medicine, Yangzhou University, 12 Wenhui East Road, Yangzhou 225009, Jiangsu, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou 225009, Jiangsu, China
| | - Xuezhong Liu
- College of Veterinary Medicine, Yangzhou University, 12 Wenhui East Road, Yangzhou 225009, Jiangsu, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou 225009, Jiangsu, China
| | - Zongping Liu
- College of Veterinary Medicine, Yangzhou University, 12 Wenhui East Road, Yangzhou 225009, Jiangsu, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou 225009, Jiangsu, China; Joint International Research Laboratory of Agriculture and Agri-Product Safety of the Ministry of Education of China, Yangzhou University, Yangzhou 225009, Jiangsu, China
| | - Yan Yuan
- College of Veterinary Medicine, Yangzhou University, 12 Wenhui East Road, Yangzhou 225009, Jiangsu, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou 225009, Jiangsu, China.
| | - Jianchun Bian
- College of Veterinary Medicine, Yangzhou University, 12 Wenhui East Road, Yangzhou 225009, Jiangsu, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou 225009, Jiangsu, China; Joint International Research Laboratory of Agriculture and Agri-Product Safety of the Ministry of Education of China, Yangzhou University, Yangzhou 225009, Jiangsu, China.
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11
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Responses and coping methods of different testicular cell types to heat stress: overview and perspectives. Biosci Rep 2021; 41:228844. [PMID: 34060622 PMCID: PMC8209165 DOI: 10.1042/bsr20210443] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Revised: 05/09/2021] [Accepted: 05/24/2021] [Indexed: 01/27/2023] Open
Abstract
To facilitate temperature adjustments, the testicles are located outside the body cavity. In most mammals, the temperature of the testes is lower than the body temperature to ensure the normal progression of spermatogenesis. Rising temperatures affect spermatogenesis and eventually lead to a decline in male fertility or even infertility. However, the testes are composed of different cell types, including spermatogonial stem cells (SSCs), spermatocytes, spermatozoa, Leydig cells, and Sertoli cells, which have different cellular responses to heat stress. Recent studies have shown that using different drugs can relieve heat stress-induced reproductive damage by regulating different signaling pathways. Here, we review the mechanisms by which heat stress damages different cells in testes and possible treatments.
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12
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Park YJ, Pang MG. Mitochondrial Functionality in Male Fertility: From Spermatogenesis to Fertilization. Antioxidants (Basel) 2021; 10:antiox10010098. [PMID: 33445610 PMCID: PMC7826524 DOI: 10.3390/antiox10010098] [Citation(s) in RCA: 81] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 01/08/2021] [Accepted: 01/09/2021] [Indexed: 02/06/2023] Open
Abstract
Mitochondria are structurally and functionally distinct organelles that produce adenosine triphosphate (ATP) through oxidative phosphorylation (OXPHOS), to provide energy to spermatozoa. They can also produce reactive oxidation species (ROS). While a moderate concentration of ROS is critical for tyrosine phosphorylation in cholesterol efflux, sperm–egg interaction, and fertilization, excessive ROS generation is associated with male infertility. Moreover, mitochondria participate in diverse processes ranging from spermatogenesis to fertilization to regulate male fertility. This review aimed to summarize the roles of mitochondria in male fertility depending on the sperm developmental stage (from male reproductive tract to female reproductive tract). Moreover, mitochondria are also involved in testosterone production, regulation of proton secretion into the lumen to maintain an acidic condition in the epididymis, and sperm DNA condensation during epididymal maturation. We also established the new signaling pathway using previous proteomic data associated with male fertility, to understand the overall role of mitochondria in male fertility. The pathway revealed that male infertility is associated with a loss of mitochondrial proteins in spermatozoa, which induces low sperm motility, reduces OXPHOS activity, and results in male infertility.
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13
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Batista RO, Budu A, Alves-Silva T, Arakaki AM, Gregnani MFS, Rodrigues Húngaro TG, Burgos-Silva M, Wasinski F, Lanzoni VP, Camara NOS, Oyama LM, Bader M, Araújo RC. Paternal exercise protects against liver steatosis in the male offspring of mice submitted to high fat diet. Life Sci 2020; 263:118583. [PMID: 33045212 DOI: 10.1016/j.lfs.2020.118583] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 10/02/2020] [Accepted: 10/05/2020] [Indexed: 12/13/2022]
Abstract
Parental lifestyle has been related to alterations in the phenotype of their offspring. Obese sires can induce offspring insulin resistance as well as increase susceptibility to obesity. On the other hand, obese sires submitted to voluntary exercise ameliorate the deleterious metabolic effects on their offspring. However, there are no studies reporting the effect of programmed exercise training of lean sires on offspring metabolism. AIMS This study aimed to investigate the role of swimming training of sires for 6 weeks on the offspring metabolic phenotype. MAIN METHODS Male C57BL/6 mice fed a control diet were divided into sedentary and swimming groups. After the exercise, they were mated with sedentary females, and body weight and molecular parameters of the offspring were subsequently monitored. KEY FINDINGS Swimming decreased the gene expression of Fasn and Acaca in the testes and increased the AMPK protein content in the testes and epididymis of the sires. The progeny presented a low weight at P1, which reached a normal level at P60 and at P90 the animals were challenged with HFD for 16 weeks. The male offspring of trained sires presented less body weight gain than the control group. The level of steatosis decreased in the male offspring from trained sires. The gene expression of Prkaa2, Ppar-1α and Cpt-1 was also increased in the liver of male offspring from trained sires. SIGNIFICANCE Taken together, these findings suggest that paternal exercise training can improve the metabolic profile in the liver of the progeny, thereby ameliorating the effects of obesity.
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Affiliation(s)
- Rogério Oliveira Batista
- Departament of Biophysics, Federal University of São Paulo, Brazil; Departament of Medicine, Nephrology, Federal University of São Paulo, Brazil
| | - Alexandre Budu
- Departament of Biophysics, Federal University of São Paulo, Brazil
| | | | - Aline Midori Arakaki
- Departament of Biophysics, Federal University of São Paulo, Brazil; Departament of Medicine, Nephrology, Federal University of São Paulo, Brazil
| | | | - Talita G Rodrigues Húngaro
- Departament of Biophysics, Federal University of São Paulo, Brazil; Departament of Medicine, Nephrology, Federal University of São Paulo, Brazil
| | | | - Frederick Wasinski
- Departament of Biophysics, Federal University of São Paulo, Brazil; Departament of Medicine, Nephrology, Federal University of São Paulo, Brazil
| | | | | | | | - Michael Bader
- Max-Delbruck Center for Molecular Medicine, Berlin, Germany; DZHK (German Center for Cardiovascular Research), Partner Site Berlin, Berlin, Germany; Berlin Institute of Health (BIH), Berlin, Germany; Charité - University Medicine, Berlin, Germany; Institute for Biology, University of Lübeck, Lübeck, Germany
| | - Ronaldo Carvalho Araújo
- Departament of Biophysics, Federal University of São Paulo, Brazil; Departament of Medicine, Nephrology, Federal University of São Paulo, Brazil.
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14
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Ni FD, Hao SL, Yang WX. Multiple signaling pathways in Sertoli cells: recent findings in spermatogenesis. Cell Death Dis 2019; 10:541. [PMID: 31316051 PMCID: PMC6637205 DOI: 10.1038/s41419-019-1782-z] [Citation(s) in RCA: 140] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Revised: 06/13/2019] [Accepted: 06/17/2019] [Indexed: 12/25/2022]
Abstract
The functions of Sertoli cells in spermatogenesis have attracted much more attention recently. Normal spermatogenesis depends on Sertoli cells, mainly due to their influence on nutrient supply, maintenance of cell junctions, and support for germ cells' mitosis and meiosis. Accumulating evidence in the past decade has highlighted the dominant functions of the MAPK, AMPK, and TGF-β/Smad signaling pathways during spermatogenesis. Among these pathways, the MAPK signaling pathway regulates dynamics of tight junctions and adherens junctions, proliferation and meiosis of germ cells, proliferation and lactate production of Sertoli cells; the AMPK and the TGF-β/Smad signaling pathways both affect dynamics of tight junctions and adherens junctions, as well as the proliferation of Sertoli cells. The AMPK signaling pathway also regulates lactate supply. These signaling pathways combine to form a complex regulatory network for spermatogenesis. In testicular tumors or infertile patients, the activities of these signaling pathways in Sertoli cells are abnormal. Clarifying the mechanisms of signaling pathways in Sertoli cells on spermatogenesis provides new insights into the physiological functions of Sertoli cells in male reproduction, and also serves as a pre-requisite to identify potential therapeutic targets in abnormal spermatogenesis including testicular tumor and male infertility.
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Affiliation(s)
- Fei-Da Ni
- The Sperm Laboratory, College of Life Sciences, Zhejiang University, 310058, Hangzhou, Zhejiang, China
| | - Shuang-Li Hao
- The Sperm Laboratory, College of Life Sciences, Zhejiang University, 310058, Hangzhou, Zhejiang, China
| | - Wan-Xi Yang
- The Sperm Laboratory, College of Life Sciences, Zhejiang University, 310058, Hangzhou, Zhejiang, China.
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15
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Zhou XT, Pu ZJ, Liu LX, Li GP, Feng JL, Zhu HC, Wu LF. Inhibition of autophagy enhances adenosine‑induced apoptosis in human hepatoblastoma HepG2 cells. Oncol Rep 2019; 41:829-838. [PMID: 30535464 PMCID: PMC6313051 DOI: 10.3892/or.2018.6899] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Accepted: 11/12/2018] [Indexed: 02/05/2023] Open
Abstract
In cancer research, autophagy acts as a double‑edged sword: it increases cell viability or induces cell apoptosis depending upon the cell context and functional status. Recent studies have shown that adenosine (Ado) has cytotoxic effects in many tumors. However, the role of autophagy in Ado‑induced apoptosis is still poorly understood. In the present study, Ado‑induced apoptotic death and autophagy in hepatoblastoma HepG2 cells was investigated and the relationship between autophagy and apoptosis was identified. In the present study, it was demonstrated that Ado inhibited HepG2 cell growth in a time‑ and concentration‑dependent manner and activated endoplasmic reticulum (ER) stress, as indicated by G0/G1 cell cycle arrest, the increased mRNA and protein levels of GRP78/BiP, PERK, ATF4, CHOP, cleaved caspase‑3, cytochrome c and the loss of mitochon-drial membrane potential (ΔΨm). Ado also induced autophagic flux, revealed by the increased expression of the autophagy marker microtubule‑associated protein 1 light chain 3‑II (LC3‑II), Beclin‑1, autophagosomes, and the degradation of p62, as revealed by western blot analysis and macrophage‑derived chemokine (MDC) staining. Blocking autophagy using LY294002 notably entrenched Ado‑induced growth inhibition and cell apoptosis, as demonstrated with the increased expression of cytochrome c and p62, and the decreased expression of LC3‑II. Conversely, the autophagy inducer rapamycin alleviated Ado‑induced apoptosis and markedly increased the ΔΨm. Moreover, knockdown of AMPK with si‑AMPK partially abolished Ado‑induced ULK1 activation and mTOR inhibition, and thus reinforced CHOP expression and Ado‑induced apoptosis. These results indicated that Ado‑induced ER stress resulted in apoptosis and autophagy concurrently. The AMPK/mTOR/ULK1 signaling pathway played a protective role in the apoptotic procession. Inhibition of autophagy may effectively enhance the anticancer effect of Ado in human hepatoblastoma HepG2 cells.
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Affiliation(s)
- Xiao-Tao Zhou
- Department of Gastroenterology, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong 515041, P.R. China
| | - Ze-Jin Pu
- Department of Gastroenterology, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong 515041, P.R. China
| | - Li-Xuan Liu
- Department of Gastroenterology, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong 515041, P.R. China
| | - Guo-Ping Li
- Department of Gastroenterology, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong 515041, P.R. China
| | - Jia-Lin Feng
- Department of Information, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong 515041, P.R. China
| | - Hua-Chen Zhu
- State Key Laboratory of Emerging Infectious Diseases, Shantou University-The University of Hong Kong Joint Institute of Virology, Shantou, Guangdong 515041, P.R. China
| | - Ling-Fei Wu
- Department of Gastroenterology, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong 515041, P.R. China
- Correspondence to: Professor Ling-Fei Wu, Department of Gastroenterology, The Second Affiliated Hospital, Shantou University Medical College, 69 Dongxia Road, Shantou, Guangdong 515041, P.R. China, E-mail:
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16
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Role of AMPK in mammals reproduction: Specific controls and whole-body energy sensing. C R Biol 2018; 342:1-6. [PMID: 30580936 DOI: 10.1016/j.crvi.2018.10.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2018] [Revised: 10/10/2018] [Accepted: 10/31/2018] [Indexed: 01/02/2023]
Abstract
AMP-activated protein kinase (AMPK) is a key enzyme involved in linking the energy sensing to metabolic pathways. As such, it plays a central role at the whole-body level to translate endocrine communications into adapted responses aimed either at saving energy when food is scarce or at allocating it to various functions, particularly reproduction, when food is available. AMPK also plays major roles in the energy individual cells use in order to realize their specific functions. This is of course especially true for all cells involved in the reproductive function (gonads, gametes) or in its control (hypothalamus, pituitary). In the present review, I report a survey of the various roles of AMPK functions in reproduction, either directly in reproductive organs, or indirectly in organs controlling reproduction, particularly at hypothalamus level.
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17
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Insights into leptin signaling and male reproductive health: the missing link between overweight and subfertility? Biochem J 2018; 475:3535-3560. [DOI: 10.1042/bcj20180631] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 09/28/2018] [Accepted: 10/19/2018] [Indexed: 12/24/2022]
Abstract
Obesity stands as one of the greatest healthcare challenges of the 21st century. Obesity in reproductive-age men is ever more frequent and is reaching upsetting levels. At the same time, fertility has taken an inverse direction and is decreasing, leading to an increased demand for fertility treatments. In half of infertile couples, there is a male factor alone or combined with a female factor. Furthermore, male fertility parameters such as sperm count and concentration went on a downward spiral during the last few decades and are now approaching the minimum levels established to achieve successful fertilization. Hence, the hypothesis that obesity and deleterious effects in male reproductive health, as reflected in deterioration of sperm parameters, are somehow related is tempting. Most often, overweight and obese individuals present leptin levels directly proportional to the increased fat mass. Leptin, besides the well-described central hypothalamic effects, also acts in several peripheral organs, including the testes, thus highlighting a possible regulatory role in male reproductive function. In the last years, research focusing on leptin effects in male reproductive function has unveiled additional roles and molecular mechanisms of action for this hormone at the testicular level. Herein, we summarize the novel molecular signals linking metabolism and male reproductive function with a focus on leptin signaling, mitochondria and relevant pathways for the nutritional support of spermatogenesis.
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Yu CL, Guan JY, Ding J, Huang S, Lian Y, Luo HY, Wang XZ. AMP-activated protein kinase negatively regulates heat treatment-induced lactate secretion in cultured boar sertoli cells. Theriogenology 2018; 121:35-41. [DOI: 10.1016/j.theriogenology.2018.07.039] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Revised: 07/30/2018] [Accepted: 07/30/2018] [Indexed: 12/16/2022]
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19
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Role of AMPK in the expression of tight junction proteins in heat-treated porcine Sertoli cells. Theriogenology 2018; 121:42-52. [DOI: 10.1016/j.theriogenology.2018.08.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Revised: 08/06/2018] [Accepted: 08/07/2018] [Indexed: 01/15/2023]
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20
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Martin-Hidalgo D, Hurtado de Llera A, Calle-Guisado V, Gonzalez-Fernandez L, Garcia-Marin L, Bragado MJ. AMPK Function in Mammalian Spermatozoa. Int J Mol Sci 2018; 19:ijms19113293. [PMID: 30360525 PMCID: PMC6275045 DOI: 10.3390/ijms19113293] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 10/16/2018] [Accepted: 10/20/2018] [Indexed: 01/03/2023] Open
Abstract
AMP-activated protein kinase AMPK regulates cellular energy by controlling metabolism through the inhibition of anabolic pathways and the simultaneous stimulation of catabolic pathways. Given its central regulator role in cell metabolism, AMPK activity and its regulation have been the focus of relevant investigations, although only a few studies have focused on the AMPK function in the control of spermatozoa's ability to fertilize. This review summarizes the known cellular roles of AMPK that have been identified in mammalian spermatozoa. The involvement of AMPK activity is described in terms of the main physiological functions of mature spermatozoa, particularly in the regulation of suitable sperm motility adapted to the fluctuating extracellular medium, maintenance of the integrity of sperm membranes, and the mitochondrial membrane potential. In addition, the intracellular signaling pathways leading to AMPK activation in mammalian spermatozoa are reviewed. We also discuss the role of AMPK in assisted reproduction techniques, particularly during semen cryopreservation and preservation (at 17 °C). Finally, we reinforce the idea of AMPK as a key signaling kinase in spermatozoa that acts as an essential linker/bridge between metabolism energy and sperm's ability to fertilize.
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Affiliation(s)
- David Martin-Hidalgo
- Research Group of Intracellular Signaling and Technology of Reproduction (SINTREP), Institute of Biotechnology in Agriculture and Livestock (INBIO G+C), University of Extremadura, 10003 Cáceres, Spain.
- Unit for Multidisciplinary Research in Biomedicine (UMIB), Laboratory of Cell Biology, Department of Microscopy, Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, 40050-313 Porto, Portugal.
| | - Ana Hurtado de Llera
- Research Group of Intracellular Signaling and Technology of Reproduction (SINTREP), Institute of Biotechnology in Agriculture and Livestock (INBIO G+C), University of Extremadura, 10003 Cáceres, Spain.
- Hormones and Metabolism Research Group, Faculty of Health Sciences, University of Beira Interior, 6200-506 Covilhã, Portugal.
| | - Violeta Calle-Guisado
- Research Group of Intracellular Signaling and Technology of Reproduction (SINTREP), Institute of Biotechnology in Agriculture and Livestock (INBIO G+C), University of Extremadura, 10003 Cáceres, Spain.
| | - Lauro Gonzalez-Fernandez
- Research Group of Intracellular Signaling and Technology of Reproduction (SINTREP), Institute of Biotechnology in Agriculture and Livestock (INBIO G+C), University of Extremadura, 10003 Cáceres, Spain.
| | - Luis Garcia-Marin
- Research Group of Intracellular Signaling and Technology of Reproduction (SINTREP), Institute of Biotechnology in Agriculture and Livestock (INBIO G+C), University of Extremadura, 10003 Cáceres, Spain.
| | - M Julia Bragado
- Research Group of Intracellular Signaling and Technology of Reproduction (SINTREP), Institute of Biotechnology in Agriculture and Livestock (INBIO G+C), University of Extremadura, 10003 Cáceres, Spain.
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21
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Crisóstomo L, Alves MG, Gorga A, Sousa M, Riera MF, Galardo MN, Meroni SB, Oliveira PF. Molecular Mechanisms and Signaling Pathways Involved in the Nutritional Support of Spermatogenesis by Sertoli Cells. Methods Mol Biol 2018; 1748:129-155. [PMID: 29453570 DOI: 10.1007/978-1-4939-7698-0_11] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Sertoli cells play a central role in spermatogenesis. They maintain the blood-testis barrier, an essential feature of seminiferous tubules which creates the proper environment for the occurrence of the spermatogenesis. However, this confinement renders germ cells almost exclusively dependent on Sertoli cells' nursing function and support. Throughout spermatogenesis, differentiating sperm cells become more specialized, and their biochemical machinery is insufficient to meet their metabolic demands. Although the needs are not the same at all differentiation stages, Sertoli cells are able to satisfy their needs. In order to maintain the seminiferous tubule energetic homeostasis, Sertoli cells react in response to several metabolic stimuli, through signaling cascades. The AMP-activated kinase, sensitive to the global energetic status; the hypoxia-inducible factors, sensitive to oxygen concentration; and the peroxisome proliferator-activated receptors, sensitive to fatty acid availability, are pathways already described in Sertoli cells. These cells' metabolism also reflects the whole-body metabolic dynamics. Metabolic diseases, including obesity and type II diabetes mellitus, induce changes that, both directly and indirectly, affect Sertoli cell function and, ultimately, (dys)function in male reproductive health. Insulin resistance, increased estrogen synthesis, vascular disease, and pubic fat accumulation are examples of metabolic-related conditions that affect male fertility potential. On the other hand, malnutrition can also induce negative effects on male sexual function. In this chapter, we review the molecular mechanisms associated with the nutritional state and male sexual (dys)function and the central role played by the Sertoli cells.
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Affiliation(s)
- Luís Crisóstomo
- Unit for Multidisciplinary Research in Biomedicine (UMIB), Laboratory of Cell Biology, Department of Microscopy, Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Porto, Portugal
- Department of Genetics, Faculty of Medicine (FMUP), University of Porto, Porto, Portugal
- i3S-Instituto de Investigação e Inovação em Saúde, University of Porto, Porto, Portugal
| | - Marco G Alves
- Unit for Multidisciplinary Research in Biomedicine (UMIB), Laboratory of Cell Biology, Department of Microscopy, Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Porto, Portugal
| | - Agostina Gorga
- CONICET-FEI-División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Centro de Investigaciones Endocrinológicas "Dr César Bergadá", Ciudad Autónoma de Buenos Aires, Argentina
| | - Mário Sousa
- Unit for Multidisciplinary Research in Biomedicine (UMIB), Laboratory of Cell Biology, Department of Microscopy, Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Porto, Portugal
- Centre for Reproductive Genetics Prof. Alberto Barros, Porto, Portugal
| | - María F Riera
- CONICET-FEI-División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Centro de Investigaciones Endocrinológicas "Dr César Bergadá", Ciudad Autónoma de Buenos Aires, Argentina
| | - María N Galardo
- CONICET-FEI-División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Centro de Investigaciones Endocrinológicas "Dr César Bergadá", Ciudad Autónoma de Buenos Aires, Argentina
| | - Silvina B Meroni
- CONICET-FEI-División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Centro de Investigaciones Endocrinológicas "Dr César Bergadá", Ciudad Autónoma de Buenos Aires, Argentina.
| | - Pedro F Oliveira
- Department of Microscopy, Laboratory of Cell Biology and Unit for Multidisciplinary Research in Biomedicine (UMIB), Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Porto, Portugal.
- Department of Genetics, Faculty of Medicine, University of Porto, Porto, Portugal.
- i3S - Instituto de Investigação e Inovação em Saúde, University of Porto, Porto, Portugal.
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari "Aldo Moro", Bari, Italy.
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22
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Weng B, Ran M, Chen B, He C, Dong L, Peng F. Genome-wide analysis of long non-coding RNAs and their role in postnatal porcine testis development. Genomics 2017; 109:446-456. [PMID: 28746831 DOI: 10.1016/j.ygeno.2017.07.001] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Revised: 07/16/2017] [Accepted: 07/17/2017] [Indexed: 12/21/2022]
Abstract
A comprehensive and systematic understanding of the roles of lncRNAs in the postnatal development of the pig testis has still not been achieved. In the present study, we obtained more than one billion clean reads and identified 15,528 lncRNA transcripts; these transcripts included 5032 known and 10,496 novel porcine lncRNA transcripts and corresponded to 10,041 lncRNA genes. Pairwise comparisons identified 449 known and 324 novel lncRNAs that showed differential expression patterns. GO and KEGG pathway enrichment analyses revealed that the targeted genes were involved in metabolic pathways regulating testis development and spermatogenesis, such as the TGF-beta pathway, the PI3K-Akt pathway, the Wnt/β-catenin pathway, and the AMPK pathway. Using this information, we predicted some lncRNAs and coding gene pairs were predicted that may function in testis development and spermatogenesis; these are listed in detail. This study has provided the most comprehensive catalog to date of lncRNAs in the postnatal pig testis and will aid our understanding of their functional roles in testis development and spermatogenesis.
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Affiliation(s)
- Bo Weng
- College of Animal Science and Technology, Hunan Agriculture University, Hunan, Changsha 410128, China; Hunan Provincial Key Laboratory for Genetic Improvement of Domestic Animal, Changsha 410128, China
| | - Maoliang Ran
- College of Animal Science and Technology, Hunan Agriculture University, Hunan, Changsha 410128, China; Hunan Provincial Key Laboratory for Genetic Improvement of Domestic Animal, Changsha 410128, China
| | - Bin Chen
- College of Animal Science and Technology, Hunan Agriculture University, Hunan, Changsha 410128, China; Hunan Provincial Key Laboratory for Genetic Improvement of Domestic Animal, Changsha 410128, China.
| | - Changqing He
- College of Animal Science and Technology, Hunan Agriculture University, Hunan, Changsha 410128, China; Hunan Provincial Key Laboratory for Genetic Improvement of Domestic Animal, Changsha 410128, China
| | - Lianhua Dong
- College of Animal Science and Technology, Hunan Agriculture University, Hunan, Changsha 410128, China; Hunan Provincial Key Laboratory for Genetic Improvement of Domestic Animal, Changsha 410128, China
| | - Fuzhi Peng
- College of Animal Science and Technology, Hunan Agriculture University, Hunan, Changsha 410128, China; Hunan Provincial Key Laboratory for Genetic Improvement of Domestic Animal, Changsha 410128, China
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23
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Gorga A, Rindone GM, Regueira M, Pellizzari EH, Camberos MC, Cigorraga SB, Riera MF, Galardo MN, Meroni SB. PPARγ activation regulates lipid droplet formation and lactate production in rat Sertoli cells. Cell Tissue Res 2017; 369:611-624. [PMID: 28432465 DOI: 10.1007/s00441-017-2615-y] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Accepted: 03/09/2017] [Indexed: 12/29/2022]
Abstract
Sertoli cells provide the structural and nutritional support for germ cell development; they actively metabolize glucose and convert it to lactate, which is an important source of energy for germ cells. Furthermore, Sertoli cells can oxidize fatty acids, a metabolic process that is assumed to fulfill their own energy requirements. Fatty acids are stored as triacylglycerides within lipid droplets. The regulation of fatty acid storage in conjunction with the regulation of lactate production may thus be relevant to seminiferous tubule physiology. Our aim is to evaluate a possible means of regulation by the PPARγ activation of lipid droplet formation and lactate production. Sertoli cell cultures obtained from 20-day-old rats were incubated with Rosiglitazone (10 μM), a PPARγ activator, for various periods of time (6, 12, 24 and 48 h). Increased triacylglycerides levels and lipid droplet content were observed, accompanied by a rise in the expression of genes for proteins involved in fatty acid storage, such as the fatty acid transporter Cd36, glycerol-3-phosphate-acyltransferases 1 and 3, diacylglycerol acyltransferase 1 and perilipins 1, 2 and 3, all proteins that participate in lipid droplet formation and stabilization. However, PPARγ activation increased lactate production, accompanied by an augmentation in glucose uptake and Glut2 expression. These results taken together suggest that PPARγ activation in Sertoli cells participates in the regulation of lipid storage and lactate production thereby ensuring simultaneously the energetic metabolism for the Sertoli and germ cells.
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Affiliation(s)
- A Gorga
- Centro de Investigaciones Endocrinológicas, "Dr César Bergadá", CONICET-FEI-División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Gallo 1330, C1425EFD, Buenos Aires, Argentina
| | - G M Rindone
- Centro de Investigaciones Endocrinológicas, "Dr César Bergadá", CONICET-FEI-División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Gallo 1330, C1425EFD, Buenos Aires, Argentina
| | - M Regueira
- Centro de Investigaciones Endocrinológicas, "Dr César Bergadá", CONICET-FEI-División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Gallo 1330, C1425EFD, Buenos Aires, Argentina
| | - E H Pellizzari
- Centro de Investigaciones Endocrinológicas, "Dr César Bergadá", CONICET-FEI-División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Gallo 1330, C1425EFD, Buenos Aires, Argentina
| | - M C Camberos
- Centro de Investigaciones Endocrinológicas, "Dr César Bergadá", CONICET-FEI-División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Gallo 1330, C1425EFD, Buenos Aires, Argentina
| | - S B Cigorraga
- Centro de Investigaciones Endocrinológicas, "Dr César Bergadá", CONICET-FEI-División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Gallo 1330, C1425EFD, Buenos Aires, Argentina
| | - M F Riera
- Centro de Investigaciones Endocrinológicas, "Dr César Bergadá", CONICET-FEI-División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Gallo 1330, C1425EFD, Buenos Aires, Argentina
| | - M N Galardo
- Centro de Investigaciones Endocrinológicas, "Dr César Bergadá", CONICET-FEI-División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Gallo 1330, C1425EFD, Buenos Aires, Argentina
| | - S B Meroni
- Centro de Investigaciones Endocrinológicas, "Dr César Bergadá", CONICET-FEI-División de Endocrinología, Hospital de Niños Ricardo Gutiérrez, Gallo 1330, C1425EFD, Buenos Aires, Argentina.
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Bertoldo MJ, Faure M, Dupont J, Froment P. AMPK: a master energy regulator for gonadal function. Front Neurosci 2015; 9:235. [PMID: 26236179 PMCID: PMC4500899 DOI: 10.3389/fnins.2015.00235] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Accepted: 06/19/2015] [Indexed: 12/11/2022] Open
Abstract
From C. elegans to mammals (including humans), nutrition and energy metabolism significantly influence reproduction. At the cellular level, some detectors of energy status indicate whether energy reserves are abundant (obesity), or poor (diet restriction). One of these detectors is AMPK (5′ AMP-activated protein kinase), a protein kinase activated by ATP deficiency but also by several natural substances such as polyphenols or synthetic molecules like metformin, used in the treatment of insulin resistance. AMPK is expressed in muscle and liver, but also in the ovary and testis. This review focuses on the main effects of AMPK identified in gonadal cells. We describe the role of AMPK in gonadal steroidogenesis, in proliferation and survival of somatic gonadal cells and in the maturation of oocytes or spermatozoa. We discuss also the role of AMPK in germ and somatic cell interactions within the cumulus-oocyte complex and in the blood testis barrier. Finally, the interface in the gonad between AMPK and modification of metabolism is reported and discussion about the role of AMPK on fertility, in regards to the treatment of infertility associated with insulin resistance (male obesity, polycystic ovary syndrome).
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Affiliation(s)
- Michael J Bertoldo
- Discipline of Obstetrics and Gynaecology, School of Women's and Children's Health, University of New South Wales Sydney, NSW, Australia
| | - Melanie Faure
- Unité de Physiologie de la Reproduction et des Comportements, Institut National de la Recherche Agronomique, UMR85 Nouzilly, France
| | - Joëlle Dupont
- Unité de Physiologie de la Reproduction et des Comportements, Institut National de la Recherche Agronomique, UMR85 Nouzilly, France
| | - Pascal Froment
- Unité de Physiologie de la Reproduction et des Comportements, Institut National de la Recherche Agronomique, UMR85 Nouzilly, France
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25
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Dose-dependent effects of caffeine in human Sertoli cells metabolism and oxidative profile: Relevance for male fertility. Toxicology 2015; 328:12-20. [DOI: 10.1016/j.tox.2014.12.003] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Revised: 12/03/2014] [Accepted: 12/04/2014] [Indexed: 02/08/2023]
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26
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Roa J, Tena-Sempere M. Connecting metabolism and reproduction: roles of central energy sensors and key molecular mediators. Mol Cell Endocrinol 2014; 397:4-14. [PMID: 25289807 DOI: 10.1016/j.mce.2014.09.027] [Citation(s) in RCA: 93] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2014] [Revised: 09/26/2014] [Accepted: 09/26/2014] [Indexed: 12/15/2022]
Abstract
It is well established that pubertal activation of the reproductive axis and maintenance of fertility are critically dependent on the magnitude of body energy reserves and the metabolic state of the organism. Hence, conditions of impaired energy homeostasis often result in deregulation of puberty and reproduction, whereas gonadal dysfunction can be associated with the worsening of the metabolic profile and, eventually, changes in body weight. While much progress has taken place in our knowledge about the neuroendocrine mechanisms linking metabolism and reproduction, our understanding of how such dynamic interplay happens is still incomplete. As paradigmatic example, much has been learned in the last two decades on the reproductive roles of key metabolic hormones (such as leptin, insulin and ghrelin), their brain targets and the major transmitters and neuropeptides involved. Yet, the molecular mechanisms whereby metabolic information is translated and engages into the reproductive circuits remain largely unsolved. In this work, we will summarize recent developments in the characterization of the putative central roles of key cellular energy sensors, such as mTOR, in this phenomenon, and will relate these with other molecular mechanisms likely contributing to the brain coupling of energy balance and fertility. In doing so, we aim to provide an updated view of an area that, despite still underdeveloped, may be critically important to fully understand how reproduction and metabolism are tightly connected in health and disease.
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Affiliation(s)
- Juan Roa
- Department of Cell Biology, Physiology and Immunology, University of Córdoba, Cordoba, Spain; CIBER Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Córdoba, Spain; Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC)/Hospital Universitario Reina Sofia, 14004 Córdoba, Spain
| | - Manuel Tena-Sempere
- Department of Cell Biology, Physiology and Immunology, University of Córdoba, Cordoba, Spain; CIBER Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Córdoba, Spain; Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC)/Hospital Universitario Reina Sofia, 14004 Córdoba, Spain.
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27
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Santiquet N, Sasseville M, Laforest M, Guillemette C, Gilchrist RB, Richard FJ. Activation of 5' adenosine monophosphate-activated protein kinase blocks cumulus cell expansion through inhibition of protein synthesis during in vitro maturation in Swine. Biol Reprod 2014; 91:51. [PMID: 25031357 DOI: 10.1095/biolreprod.113.116764] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
The serine/threonine kinase 5' adenosine monophosphate-activated protein kinase (AMPK), a heterotrimeric protein known as a metabolic switch, is involved in oocyte nuclear maturation in mice, cattle, and swine. The present study analyzed AMPK activation in cumulus cell expansion during in vitro maturation (IVM) of porcine cumulus-oocyte complexes (COC). 5-Aminoimidazole-4-carboxamide-1-beta-d-ribofuranoside (AICAR) is a well-known activator of AMPK. It inhibited oocyte meiotic resumption in COC. Moreover, cumulus cell expansion did not occur in the presence of AICAR, demonstrating its marked impact on cumulus cells. Activation of AMPK was supported by AICAR-mediated phosphorylation of alpha AMPK subunits. Furthermore, the presence of AICAR increased glucose uptake, a classical response to activation of this metabolic switch in response to depleted cellular energy levels. Neither nuclear maturation nor cumulus expansion was reversed by glucosamine, an alternative substrate in hyaluronic acid synthesis, through the hexosamine biosynthetic pathway, which ruled out possible depletion of substrates. Both increased gap junction communication and phosphodiesterase activity in COC are dependent on protein synthesis during the initial hours of IVM; however, both were inhibited in the presence of AICAR, which supports the finding that activation of AMPK by AICAR mediated inhibition of protein synthesis. Moreover, this protein synthesis inhibition was equivalent to that of the well-known protein synthesis inhibitor cycloheximide, as observed on cumulus expansion and protein concentration. Finally, the phosphorylation level of selected kinases was investigated. The pattern of raptor phosphorylation is supportive of activation of AMPK-mediated inhibition of protein synthesis. In conclusion, AICAR-mediated AMPK activation in porcine COC inhibited cumulus cell expansion and protein synthesis. These results bring new considerations to the importance of this kinase in ovarian physiology and to the development of new oocyte culture medium.
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Affiliation(s)
- Nicolas Santiquet
- Centre de Recherche en Biologie de la Reproduction, Département des Sciences Animales, Faculté des sciences de l'agriculture et de l'alimentation, Université Laval, Québec, Québec, Canada
| | - Maxime Sasseville
- Centre de Recherche en Biologie de la Reproduction, Département des Sciences Animales, Faculté des sciences de l'agriculture et de l'alimentation, Université Laval, Québec, Québec, Canada
| | - Martin Laforest
- Centre de Recherche en Biologie de la Reproduction, Département des Sciences Animales, Faculté des sciences de l'agriculture et de l'alimentation, Université Laval, Québec, Québec, Canada
| | - Christine Guillemette
- Centre de Recherche en Biologie de la Reproduction, Département des Sciences Animales, Faculté des sciences de l'agriculture et de l'alimentation, Université Laval, Québec, Québec, Canada
| | - Robert B Gilchrist
- Robinson Institute, Research Centre for Reproductive Health, School of Paediatrics and Reproductive Health, Medical School, University of Adelaide, Adelaide, Australia
| | - François J Richard
- Centre de Recherche en Biologie de la Reproduction, Département des Sciences Animales, Faculté des sciences de l'agriculture et de l'alimentation, Université Laval, Québec, Québec, Canada
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28
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Burnstock G. Purinergic signalling in endocrine organs. Purinergic Signal 2014; 10:189-231. [PMID: 24265070 PMCID: PMC3944044 DOI: 10.1007/s11302-013-9396-x] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Accepted: 10/24/2013] [Indexed: 01/08/2023] Open
Abstract
There is widespread involvement of purinergic signalling in endocrine biology. Pituitary cells express P1, P2X and P2Y receptor subtypes to mediate hormone release. Adenosine 5'-triphosphate (ATP) regulates insulin release in the pancreas and is involved in the secretion of thyroid hormones. ATP plays a major role in the synthesis, storage and release of catecholamines from the adrenal gland. In the ovary purinoceptors mediate gonadotrophin-induced progesterone secretion, while in the testes, both Sertoli and Leydig cells express purinoceptors that mediate secretion of oestradiol and testosterone, respectively. ATP released as a cotransmitter with noradrenaline is involved in activities of the pineal gland and in the neuroendocrine control of the thymus. In the hypothalamus, ATP and adenosine stimulate or modulate the release of luteinising hormone-releasing hormone, as well as arginine-vasopressin and oxytocin. Functionally active P2X and P2Y receptors have been identified on human placental syncytiotrophoblast cells and on neuroendocrine cells in the lung, skin, prostate and intestine. Adipocytes have been recognised recently to have endocrine function involving purinoceptors.
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Affiliation(s)
- Geoffrey Burnstock
- Autonomic Neuroscience Centre, University College Medical School, Rowland Hill Street, London, NW3 2PF, UK,
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29
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Dupont J, Reverchon M, Bertoldo MJ, Froment P. Nutritional signals and reproduction. Mol Cell Endocrinol 2014; 382:527-537. [PMID: 24084162 DOI: 10.1016/j.mce.2013.09.028] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2013] [Revised: 09/19/2013] [Accepted: 09/22/2013] [Indexed: 01/17/2023]
Abstract
There is extensive evidence that nutrition influences reproductive function in various mammalian species (agricultural animals, rodents and human). However, the mechanisms underlying the relationship between nutrition, energy metabolism and reproductive function are poorly understood. This review considers nutrient sensors as a molecular link between food molecules and consequences for female and male fertility. It focuses on the roles and the molecular mechanisms of some of the relevant hormones, such as insulin and adipokines, and of energy substrates (glucose, fatty acids and amino acids), in the gonadotropic axis (central nervous system and gonads). A greater understanding of the interactions between nutrition and fertility is required for both better management of the physiological processes and the development of new molecules to prevent or cure metabolic diseases and their consequences for fertility.
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Affiliation(s)
- Joëlle Dupont
- UMR 7247, INRA-CNRS-Université de Tours-Haras Nationaux, 37380 Nouzilly, France.
| | - Maxime Reverchon
- UMR 7247, INRA-CNRS-Université de Tours-Haras Nationaux, 37380 Nouzilly, France
| | - Michael J Bertoldo
- UMR 7247, INRA-CNRS-Université de Tours-Haras Nationaux, 37380 Nouzilly, France
| | - Pascal Froment
- UMR 7247, INRA-CNRS-Université de Tours-Haras Nationaux, 37380 Nouzilly, France
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30
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Tartarin P, Guibert E, Touré A, Ouiste C, Leclerc J, Sanz N, Brière S, Dacheux JL, Delaleu B, McNeilly JR, McNeilly AS, Brillard JP, Dupont J, Foretz M, Viollet B, Froment P. Inactivation of AMPKα1 induces asthenozoospermia and alters spermatozoa morphology. Endocrinology 2012; 153:3468-81. [PMID: 22581459 DOI: 10.1210/en.2011-1911] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
AMP-activated protein kinase (AMPK), a key regulator of cellular energy homeostasis, is present in metabolic tissues (muscle and liver) and has been identified as a modulator of the female reproductive functions. However, its function in the testis has not yet been clearly defined. We have investigated the potential role of AMPK in male reproduction by using transgenic mice lacking the activity of AMPK catalytic subunit α1 gene [α1AMPK knockout (KO)]. In the testis, the α1AMPK subunit is expressed in germ cells and also in somatic cells (Sertoli and Leydig cells). α1AMPK KO male mice show a decrease in fertility, despite no clear alteration in the testis morphology or sperm production. However, in α1AMPK(-/-) mice, we demonstrate that spermatozoa have structural abnormalities and are less motile than in control mice. These spermatozoa alterations are associated with a 50% decrease in mitochondrial activity, a 60% decrease in basal oxygen consumption, and morphological defects. The α1AMPK KO male mice had high androgen levels associated with a 5- and 3-fold increase in intratesticular cholesterol and testosterone concentrations, respectively. High concentrations of proteins involved in steroid production (3β-hydroxysteroid dehydrogenase, cytochrome steroid 17 alpha-hydroxylase/17,20 lysate, and steroidogenic acute regulatory protein) were also detected in α1AMPK(-/-) testes. In the pituitary, the LH and FSH concentrations tended to be lower in α1AMPK(-/-) male mice, probably due to the negative feedback of the high testosterone levels. These results suggest that total α1AMPK deficiency in male mice affects androgen production and quality of spermatozoa, leading to a decrease in fertility.
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Affiliation(s)
- Pauline Tartarin
- Unité Mixte de Recherche (UMR) 6175, Physiologie de la Reproduction et des Comportements (Institut National dela Recherche Agronomique/Centre National dela Recherche Scientifique/Université Tours/Haras Nationaux), 37380 Nouzilly, France
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31
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Abstract
Male factor infertility is increasing in developed countries, and several factors linked to lifestyle have been shown to negatively affect spermatogenesis. Sertoli cells are pivotal to spermatogenesis, providing nutritional support to germ cells throughout their development. Sertoli cells display atypical features in their cellular metabolism; they can metabolize various substrates, preferentially glucose, the majority of which is converted to lactate and not oxidized via the tricarboxylic acid cycle. Why Sertoli cells preferentially export lactate for germ cells is not entirely understood. However, lactate is utilized as the main energy substrate by developing germ cells and has an antiapoptotic effect on these cells. Several biochemical mechanisms contribute to the modulation of lactate secretion by Sertoli cells. These include the transport of glucose through the plasma membrane, mediated by glucose transporters; the interconversion of pyruvate to lactate by lactate dehydrogenase; and the release of lactate mediated by monocarboxylate transporters. Several factors that modulate Sertoli cell metabolism have been identified, including sex steroid hormones, which are crucial for maintenance of energy homeostasis, influencing the metabolic balance of the whole body. In fact, energy status is essential for normal reproductive function, since the reproductive axis has the capacity to respond to metabolic cues.
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32
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Membrane-initiated actions of thyroid hormones on the male reproductive system. Life Sci 2011; 89:507-14. [PMID: 21557952 DOI: 10.1016/j.lfs.2011.04.006] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2010] [Revised: 03/18/2011] [Accepted: 04/04/2011] [Indexed: 11/22/2022]
Abstract
The presence of specific nuclear receptors to thyroid hormones, described in prepubertal Sertoli cells, implies the existence of an early and critical influence of these hormones on testis development. Although the mechanism of action thyroid hormones has been classically established as a genomic action regulating testis development, our research group has demonstrated that these hormones exert several effects in Sertoli cells lacking nuclear receptor activation. These findings led to the identification of non-classical thyroid hormone binding elements in the plasma membrane of testicular cells. Through binding to these sites, thyroid hormones could exert nongenomic effects, including those on ion fluxes at the plasma membrane, on signal transduction via kinase pathways, on amino acid accumulation, on modulation of extracellular nucleotide levels and on vimentin cytoskeleton. The evidence of the participation of different K(+), Ca(2+) and Cl(-) channels in the mechanism of action of thyroid hormones, characterizes the plasma membrane as an important microenvironment able to coordinate strategic signal transduction pathways in rat testis. The physiological responses of the Sertoli cells to hormones are dependent on continuous cross-talking of different signal transduction pathways. Apparently, the choice of the signaling pathways to be activated after the interaction of the hormone with cell surface binding sites is directly related to the physiological action to be accomplished. Yet, the enormous complexity of the nongenomic actions of thyroid hormones implies that different specific binding sites located on the plasma membrane or in the cytosol are believed to initiate specific cell responses.
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