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Setiawan R, Christi RF, Alhuur KRG, Widyastuti R, Solihati N, Rasad SD, Hidajat K, Do DN. Impact of glucose and pyruvate on adenosine triphosphate production and sperm motility in goats. Anim Biosci 2024; 37:631-639. [PMID: 37905316 PMCID: PMC10915224 DOI: 10.5713/ab.23.0229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 07/11/2023] [Accepted: 09/06/2023] [Indexed: 11/02/2023] Open
Abstract
OBJECTIVE This study evaluates goat sperm motility in response to metabolic substrates and various inhibitors, aiming to assess the relative contribution of glycolysis and mitochondrial oxidation for sperm movement and adenosine triphosphate (ATP) production. METHODS In the present study, two main metabolic substrates; 0 to 0.5 mM glucose and 0 to 30 mM pyruvate were used to evaluate their contribution to sperm movements of goats. Using a 3-chloro-1,2-propanediol (3-MCPD), a specific inhibitor for glycolysis, and carbonyl cyanide 3-chlorophenylhydrazone as an inhibitor for oxidative phosphorylation, cellular mechanisms into ATP-generating pathways in relation to sperm movements and ATP production were observed. Data were analysed using one-way analysis of variance for multiple comparisons. RESULTS Sperm motility analysis showed that either glucose or pyruvate supported sperm movement during 0 to 30 min incubation. However, the supporting effects were abolished by the addition of a glycolysis inhibitor or mitochondrial uncoupler, concomitant with a significant decrease in ATP production. Although oxidative phosphorylation produces larger ATP concentrations than those from glycolysis, sperm progressivity in relation to these two metabolic pathways is comparable. CONCLUSION Based on the present study, we suggest that goat sperm use glucose and pyruvate to generate cellular energy through glycolysis and mitochondrial respiration pathways to maintain sperm movement.
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Affiliation(s)
- Rangga Setiawan
- Department of Animal Production, Faculty of Animal Husbandry, Universitas Padjadjaran, Bandung-Sumedang KM 21, West Java 45363,
Indonesia
| | - Raden Febrianto Christi
- Department of Animal Production, Faculty of Animal Husbandry, Universitas Padjadjaran, Bandung-Sumedang KM 21, West Java 45363,
Indonesia
| | - Ken Ratu Gharizah Alhuur
- Department of Animal Production, Faculty of Animal Husbandry, Universitas Padjadjaran, Bandung-Sumedang KM 21, West Java 45363,
Indonesia
| | - Rini Widyastuti
- Department of Animal Production, Faculty of Animal Husbandry, Universitas Padjadjaran, Bandung-Sumedang KM 21, West Java 45363,
Indonesia
| | - Nurcholidah Solihati
- Department of Animal Production, Faculty of Animal Husbandry, Universitas Padjadjaran, Bandung-Sumedang KM 21, West Java 45363,
Indonesia
| | - Siti Darodjah Rasad
- Department of Animal Production, Faculty of Animal Husbandry, Universitas Padjadjaran, Bandung-Sumedang KM 21, West Java 45363,
Indonesia
| | - Kundrat Hidajat
- Department of Animal Production, Faculty of Animal Husbandry, Universitas Padjadjaran, Bandung-Sumedang KM 21, West Java 45363,
Indonesia
| | - Duy Ngoc Do
- Department of Animal Science and Aquaculture, Dalhousie University, Truro, NS B2N 5E3,
Canada
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Setiawan R, Priyadarshana C, Tajima A, Travis AJ, Asano A. Localisation and function of glucose transporter GLUT1 in chicken (Gallus gallus domesticus) spermatozoa: relationship between ATP production pathways and flagellar motility. Reprod Fertil Dev 2021; 32:697-705. [PMID: 32317094 DOI: 10.1071/rd19240] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Accepted: 10/30/2019] [Indexed: 12/26/2022] Open
Abstract
Glucose plays an important role in sperm flagellar motility and fertility via glycolysis and oxidative phosphorylation, although the primary mechanisms for ATP generation vary between species. The glucose transporter 1 (GLUT1) is a high-affinity isoform and a major glucose transporter in mammalian spermatozoa. However, in avian spermatozoa, the glucose metabolic pathways are poorly characterised. This study demonstrates that GLUT1 plays a major role in glucose-mediated motility of chicken spermatozoa. Using specific antibodies and ligand, we found that GLUT1 was specifically localised to the midpiece. Sperm motility analysis showed that glucose supported sperm movement during incubation for 0-80min. However, this was abolished by the addition of a GLUT1 inhibitor, concomitant with a substantial decrease in glucose uptake and ATP production, followed by elevated mitochondrial activity in response to glucose addition. More potent inhibition of ATP production and mitochondrial activity was observed in response to treatment with uncouplers of oxidative phosphorylation. Because mitochondrial inhibition only reduced a subset of sperm movements, we investigated the localisation of the glycolytic pathway and showed glyceraldehyde-3-phosphate dehydrogenase and hexokinase I at the midpiece and principal piece of the flagellum. The results of this study provide new insights into the mechanisms involved in ATP production pathways in avian spermatozoa.
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Affiliation(s)
- Rangga Setiawan
- Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan
| | - Chathura Priyadarshana
- Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan
| | - Atsushi Tajima
- Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan
| | - Alexander J Travis
- Baker Institute for Animal Health, Cornell University, Hungerford Hill Road, Ithaca, NY 14853, USA
| | - Atsushi Asano
- Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan; and Corresponding author.
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Ushiyama A, Priyadarshana C, Setiawan R, Miyazaki H, Ishikawa N, Tajima A, Asano A. Membrane raft-mediated regulation of glucose signaling pathway leading to acrosome reaction in chicken sperm†. Biol Reprod 2019; 100:1482-1491. [DOI: 10.1093/biolre/ioz015] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Revised: 12/21/2018] [Accepted: 02/01/2019] [Indexed: 01/13/2023] Open
Affiliation(s)
- Ai Ushiyama
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki—, Japan
| | - Chathura Priyadarshana
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki—, Japan
| | - Rangga Setiawan
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki—, Japan
| | - Hitoshi Miyazaki
- Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki—, Japan
| | - Naoto Ishikawa
- Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki—, Japan
| | - Atsushi Tajima
- Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki—, Japan
| | - Atsushi Asano
- Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki—, Japan
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Cordero-Martínez J, Reyes-Miguel T, Rodríguez-Páez L, Garduño-Siciliano L, Maldonado-García D, Roa-Espitia AL, Hernández-González EO. TMEM16A inhibition impedes capacitation and acquisition of hyperactivated motility in guinea pig sperm. J Cell Biochem 2018; 119:5944-5959. [PMID: 29600587 DOI: 10.1002/jcb.26789] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Accepted: 02/12/2018] [Indexed: 11/12/2022]
Abstract
Ca2+ -activated Cl- channels (CaCCs) are anionic channels that regulate many important physiological functions associated with chloride and calcium flux in some somatic cells. The molecular identity of CaCCs was revealed to be TMEM16A and TMEM16B (also known as Anoctamin or ANO1 and ANO2, respectively) in all eukaryotes. A recent study suggests the presence of TMEM16A in human sperm and a relationship with the rhZP-induced acrosome reaction. However, to the best of our knowledge, little is known about the role of TMEM16A in other spermatic processes such as capacitation or motility. In this study, we evaluated the effects of two TMEM16A antagonists on capacitation, acrosome reaction, and motility in guinea pig sperm; these antagonists were T16Ainh-A01, belonging to a second generation of potent antagonists of TMEM16A, and niflumic acid (NFA), a well-known antagonist of TMEM16A (CaCCs). First of all, we confirmed that the absence of Cl- in the capacitation medium changes motility parameters, capacitation, and the progesterone-induced acrosome reaction. Using a specific antibody, TMEM16A was found as a protein band of ∼120 kDa, which localization was in the apical crest of the acrosome and the middle piece of the flagellum. Inhibition of TMEM16A by T16Ainh-A01 affected sperm physiology by reducing capacitation, blocking the progesterone-induced acrosome reaction under optimal capacitation conditions, inhibiting progressive motility, and the acquisition of hyperactivated motility, diminishing [Ca2+ ]i, and increasing [Cl- ]i. These changes in sperm kinematic parameters provide new evidence of the important role played by TMEM16A in the production of sperm capable of fertilizing oocytes.
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Affiliation(s)
- Joaquín Cordero-Martínez
- Departamento de Biología Celular, Centro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional. Av. Instituto Politécnico Nacional, San Pedro Zacatenco, Del. Gustavo A. Madero, México City, Mexico.,Departamento de Bioquímica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional. Prolongación Manuel Carpio y Plan de Ayala s/n Col, Santo Tomás, Del. Miguel Hidalgo, México City, Mexico
| | - Tania Reyes-Miguel
- Departamento de Biología Celular, Centro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional. Av. Instituto Politécnico Nacional, San Pedro Zacatenco, Del. Gustavo A. Madero, México City, Mexico
| | - Lorena Rodríguez-Páez
- Departamento de Bioquímica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional. Prolongación Manuel Carpio y Plan de Ayala s/n Col, Santo Tomás, Del. Miguel Hidalgo, México City, Mexico
| | - Leticia Garduño-Siciliano
- Laboratorio de Toxicología de Productos Naturales. Departamento de Farmacia, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional. Prol. Av. Wilfrido Massieu s/n, esq. Manuel L. Stampa, Col. Unidad Profesional Adolfo López Mateos, Del. Gustavo A. Madero, México City, Mexico
| | - Deneb Maldonado-García
- Departamento de Biología Celular, Centro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional. Av. Instituto Politécnico Nacional, San Pedro Zacatenco, Del. Gustavo A. Madero, México City, Mexico
| | - Ana L Roa-Espitia
- Departamento de Biología Celular, Centro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional. Av. Instituto Politécnico Nacional, San Pedro Zacatenco, Del. Gustavo A. Madero, México City, Mexico
| | - Enrique O Hernández-González
- Departamento de Biología Celular, Centro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional. Av. Instituto Politécnico Nacional, San Pedro Zacatenco, Del. Gustavo A. Madero, México City, Mexico
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5
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Cordero-Martínez J, Aguirre-Alvarado C, Guzmán-Soriano JG, Sánchez-Arroyo CE, Flores-Alonso JC, Rodríguez-Páez L. Effects of aqueous crude extract ofEcheveria gibbifloraon mouse sperm function. Syst Biol Reprod Med 2016; 62:343-52. [DOI: 10.1080/19396368.2016.1203044] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Cordero-Martínez J, Aguirre-Alvarado C, Wong C, Rodríguez-Páez L. Effect of oxamic analogues on functional mice sperm parameters. Syst Biol Reprod Med 2014; 60:189-98. [PMID: 24654556 DOI: 10.3109/19396368.2014.902144] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The present study evaluates the effect of oxamate derivatives (N-ethyl, N-propyl, N-butyl oxamates) on functional murine sperm parameters, towards a new male non-hormonal contraceptive. These derivatives are selective inhibitors of lactate dehydrogenase-C4 (LDH-C4). LDH-C4 is a sperm-specific enzyme that plays an important role in ATP production for maintaining progressive motility as well as to induce capacitation and hyperactivation. The results demonstrate that all oxamate derivatives selectively inhibited LDH-C4 in mouse sperm extracts. The IC(50) values for hexokinase and glyceraldehyde-3-phosphate dehydrogenase were at least an order of magnitude greater than LDH-C4 IC(50) values. Prodrugs of oxamate derivatives assayed on sperm cells diminished normal sperm motility parameters, acrosome reaction, and cell viability in a concentration dependent manner. Also, we performed in vivo studies to determine the potential toxicity and possible contraceptive ability of these inhibitors. Mouse sperm were more sensitive to the N-butyl oxamate ethyl ester (NBOXet). Furthermore, results showed that NBOXet was of a low toxicity substance that diminished the total and progressive motility as well as the kinematic parameters of sperm cells. Data from in vitro and in vivo studies showed that N-butyl oxamate and its prodrug, are selective inhibitors of sperm LDH-C4, has low toxicity, and inhibits sperm progressive motility, offering some of the desirable characteristics of a male contraceptive: effect, low toxicity, and selectivity.
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Affiliation(s)
- Joaquín Cordero-Martínez
- Departamento de Bioquímica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional , México
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Odet F, Gabel S, London RE, Goldberg E, Eddy EM. Glycolysis and mitochondrial respiration in mouse LDHC-null sperm. Biol Reprod 2013; 88:95. [PMID: 23486916 DOI: 10.1095/biolreprod.113.108530] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
We demonstrated previously that a knockout (KO) of the lactate dehydrogenase type C (Ldhc) gene disrupted male fertility and caused a considerable reduction in sperm glucose consumption, ATP production, and motility. While that study used mice with a mixed genetic background, the present study used C57BL/6 (B6) and 129S6 (129) Ldhc KO mice. We found that B6 KO males were subfertile and 129 KO males were infertile. Sperm from 129 wild-type (WT) mice have a lower glycolytic rate than sperm from B6 WT mice, resulting in a greater reduction in ATP production in 129 KO sperm than in B6 KO sperm. The lower glycolytic rate in 129 sperm offered a novel opportunity to examine the role of mitochondrial respiration in sperm ATP production and motility. We observed that in media containing a mitochondrial substrate (pyruvate or lactate) as the sole energy source, ATP levels and progressive motility in 129 KO sperm were similar to those in 129 WT sperm. However, when glucose was added, lactate was unable to maintain ATP levels or progressive motility in 129 KO sperm. The rate of respiration (ZO2) was high when 129 KO or WT sperm were incubated with lactate alone, but addition of glucose caused a reduction in ZO2. These results indicate that in the absence of glucose, 129 sperm can produce ATP via oxidative phosphorylation, but in the presence of glucose, oxidative phosphorylation is suppressed and the sperm utilize aerobic glycolysis, a phenomenon known as the Crabtree effect.
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Affiliation(s)
- Fanny Odet
- Laboratory of Reproductive and Developmental Toxicology, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina, USA
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8
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Kim KS, Foster JA, Kvasnicka KW, Gerton GL. Transitional states of acrosomal exocytosis and proteolytic processing of the acrosomal matrix in guinea pig sperm. Mol Reprod Dev 2011; 78:930-41. [PMID: 21919109 DOI: 10.1002/mrd.21387] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2011] [Accepted: 08/18/2011] [Indexed: 11/09/2022]
Abstract
In this study, we adapted a FluoSphere bead-binding assay to study the exposure and release of guinea pig sperm acrosomal components during the course of capacitation and acrosomal exocytosis. Prior to capacitation or the initiation of exocytosis, acrosomal proteins were not accessible to FluoSpheres coated with antibodies against two acrosomal matrix (AM) proteins, AM67 and AM50; during the course of capacitation and ionophore-induced acrosomal exocytosis, however, we detected the transient exposure of the solid-phase AM proteins on the surface of guinea pig sperm using the antibody-coated fluorescent beads. Several different transitional stages leading to complete acrosomal exocytosis were classified, and we propose these represent true, functional intermediates since some of the AM proteins are orthologues of mouse proteins that bind the zona pellucida (ZP) of unfertilized eggs. In addition, we present evidence that implicates acrosin in the proteolytic processing of AM50 during AM disassembly. Thus, we propose that the transitional states of acrosomal exocytosis involve early binding of AM proteins to the ZP (by what visually appear to be "acrosome-intact" sperm), maintenance of ZP binding that coincides with the progressive exposure of AM proteins, and gradual proteolytic disassembly of the AM to allow sperm movement through the ZP. We feel this "transitional states" model provides a more refined view of acrosomal function that supports a move away from the widely held, overly simplistic, and binary "acrosome-reaction" model, and embraces a more dynamic view of acrosomal exocytosis that involves intermediate stages of the secretory process in ZP binding and penetration.
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9
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Rodríguez-Páez L, Chena-Taboada MA, Cabrera-Hernández A, Cordero-Martínez J, Wong C. Oxamic acid analogues as LDH-C4-specific competitive inhibitors. J Enzyme Inhib Med Chem 2011; 26:579-86. [PMID: 21438710 DOI: 10.3109/14756366.2011.566221] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
We performed kinetic studies to determine whether oxamate analogues are selective inhibitors of LDH-C4, owing to their potential usefulness in fertility control and treatment of some cancers. These substances were shown to be competitive inhibitors of LDH isozymes and are able to discriminate among subtle differences that differentiate the active sites of LDH-A4, LDH-B4 and LDH-C4. N-Ethyl oxamate was the most potent inhibitor showing the highest affinity for LDH-C4. However, N-propyl oxamate was the most selective inhibitor showing a high degree of selectivity towards LDH-C4. Non-polar four carbon atoms chains, linear or branched, dramatically diminished the affinity and selectivity towards LDH-C4. N-Propyl oxamate significantly reduced ATP levels, capacitation and mouse sperm motility, in line with results shown by others, suggesting that LDH-C4 plays an essential role in mouse fertility.
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Affiliation(s)
- Lorena Rodríguez-Páez
- Departamento de Bioquímica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional. Prol. Carpio y Plan de Ayala, México, D.F. México.
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10
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Rahim F, Saki G, Ghavamizad B, Jafaee A, Kadkhodaee M. The Effect of Oxamate on Fertilization Capacity of Mouse Sperm in vitro. INT J PHARMACOL 2009. [DOI: 10.3923/ijp.2009.178.180] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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11
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Chiquete-Felix N, Hernández JM, Méndez JA, Zepeda-Bastida A, Chagolla-López A, Mújica A. In guinea pig sperm, aldolase A forms a complex with actin, WAS, and Arp2/3 that plays a role in actin polymerization. Reproduction 2009; 137:669-78. [PMID: 19151127 DOI: 10.1530/rep-08-0353] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Glycolytic enzymes have, in addition to their role in energy production, other functions in the regulation of cellular processes. Aldolase A has been reported to be present in sperm, playing a key role in glycolysis; however, despite its reported interactions with actin and WAS, little is known about a non-glycolytic role of aldolase A in sperm. Here, we show that in guinea pig spermatozoa, aldolase A is tightly associated to cytoskeletal structures where it interacts with actin, WAS, and Arp2/3. We show that aldolase A spermatozoa treatment increases their polymerized actin levels. In addition, we show that there is a direct correlation between the levels of polymerized actin and the levels of aldolase A-actin interaction. Our results suggest that aldolase A functions as a bridge between filaments of actin and the actin-polymerizing machinery.
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Affiliation(s)
- Natalia Chiquete-Felix
- Departamento de Biología Celular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN), PC07360 México DF, Mexico
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12
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Abstract
Various alterations in germ cell proliferation/differentiation, survival and energy metabolism are potentially involved in hypospermatogenesis leading to male infertility. Several reviews have been devoted to the different processes whose alteration might underlie hypospermatogenesis, except for energy metabolism in the testis. Energy metabolism in the testis exhibits some specificity in that lactate is the central energy metabolite used by germ cells. This metabolite is produced by somatic Sertoli cells, transported and used by germ cells in the context of an active cooperation under the control of the endocrine system and local cytokines. In this review, we present and discuss relevant published data on energy metabolism in male germ cells with a specific emphasis on lactate.
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Affiliation(s)
- Fayçal Boussouar
- Inserm 407, Faculté de Médecine Lyon-Sud, 165 Chemin du Grand Revoyet, BP-12, F-69921 Oullins Cedex, France.
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Mitra K, Shivaji S. Novel Tyrosine-Phosphorylated Post-Pyruvate Metabolic Enzyme, Dihydrolipoamide Dehydrogenase, Involved in Capacitation of Hamster Spermatozoa1. Biol Reprod 2004; 70:887-99. [PMID: 14645106 DOI: 10.1095/biolreprod.103.022780] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Capacitation is a process that confers fertilizing ability to spermatozoa and this critical event occurs in the development of mammalian spermatozoa during their transit through the female reproductive tract and precedes fertilization. Because spermatozoa are relatively silent in transcription and translation, posttranslational modifications perform the regulatory functions in these cells during capacitation. In this report, we identify a candidate protein, dihydrolipoamide dehydrogenase, which is a post-pyruvate metabolic enzyme, exhibiting tyrosine phosphorylation during hamster spermatozoal capacitation. This is the first report showing dihydrolipoamide dehydrogenase as a phosphoprotein. The cDNA sequence of hamster testes dihydrolipoamide dehydrogenase does not show any variation from the already reported mammalian dihydrolipoamide dehydrogenases. Downregulation of the activity of the hamster spermatozoal enzyme by its specific inhibitor, 5-methoxyindole-2-carboxylic acid, blocks acrosome reaction completely and hyperactivation partially, confirming the role of dihydrolipoamide dehydrogenase in hamster spermatozoal capacitation. We also delineate the temporal involvement of glucose and pyruvate-lactate, showing that the former is required in the earlier stages and the latter for the later stages of hamster spermatozoal capacitation. The essentiality of pyruvate-lactate during hyperactivation and acrosome reaction necessitates the involvement of the post-pyruvate-lactate enzyme, dihydrolipoamide dehydrogenase.
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Affiliation(s)
- Kasturi Mitra
- Centre for Cellular and Molecular Biology, Hyderabad 500 007, India
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14
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Abstract
This review considers the role of the sperm in fertilization, addressing areas of misunderstanding and unfounded assumptions and taking particular advantage of the large body of data resulting from work with rodent species in vitro. Considerable attention is given to the appropriate use and interpretation of assays for capacitation, acrosomal exocytosis, hyperactivation, and sperm protein phosphorylation, as well as tests for sperm-zona and sperm-oocyte membrane interactions. The lack of general agreement on the means of sperm adhesion to and penetration of the zona pellucida is addressed, and the need for new approaches to this problem is pointed out. Some molecular advances in our understanding of specific steps in the process of fertilization are discussed in the context of intact cell-matrix and cell-cell interaction. This review should provide practical information for researchers just beginning the study of fertilization and interesting but not widely known observations to stimulate new ideas in experienced scientists.
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Affiliation(s)
- Patricia Olds-Clarke
- Department of Anatomy and Cell Biology, Temple University School of Medicine, Philadelphia, Pennsylvania 19140, USA
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Guzmán-Grenfell AM, Bonilla-Hernández MA, González-Martínez MT. Glucose induces a Na(+),K(+)-ATPase-dependent transient hyperpolarization in human sperm. I. Induction of changes in plasma membrane potential by the proton ionophore CCCP. BIOCHIMICA ET BIOPHYSICA ACTA 2000; 1464:188-98. [PMID: 10727606 DOI: 10.1016/s0005-2736(99)00247-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
When human sperm was incubated in medium deprived of glucose, glucose restoration caused a transient hyperpolarization of the plasma membrane. This hyperpolarization was also induced by fructose but not by 2-deoxyglucose, a substrate that cannot be metabolized. The hyperpolarization was inhibited by NaF, a glycolysis inhibitor, but not by mitochondrial inhibitors (cyanide, rotenone and antimycin), suggesting that it depended on glycolysis. Furthermore, the hyperpolarization was still induced in medium containing a high concentration of KCl and was insensitive to the K(+) channel blocker TEA and the Cl(-) channel blocker niflumic acid, but it was blocked by ouabain. This suggested that upon glucose addition, there was an increase in the concentration of ATP, that in turns increased the Na(+),K(+)-ATPase activity. Since this pump is electrogenic (2K(+)/3Na(+)) the plasma membrane hyperpolarized. On the other hand, CCCP, a proton ionophore, inhibited the hyperpolarization induced by glucose. When CCCP was added to glucose-treated hyperpolarized sperm, it caused a depolarization that triggered a Ca(2+) influx sensitive to nickel, an inhibitor of voltage-dependent calcium channels. Moreover, CCCP caused hyperpolarization in sperm incubated in medium without calcium, a known condition that depolarizes sperm. This indicated that CCCP induced proton permeability in the plasma membrane that was able to change the membrane potential to a value corresponding to the E(H) and that was also able to clamp it, so that it prevented the hyperpolarization induced by glucose.
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Affiliation(s)
- A M Guzmán-Grenfell
- Unidad de Investigación Médica en Bioquímica del Hospital de Especialidades del Centro Médico Siglo XXI, Instituto Mexicano del Seguro Social, México D.F., Mexico
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Abstract
The occurrence of a Crabtree effect in HeLa cells was detected. Some properties of pyruvate kinase (PK) were also evaluated. Hexose phosphate, triose-phosphate and phosphoenolpyruvate (PEP) significantly decreased the oxygen consumption of digitonin-permeabilized HeLa cells, which were oxidizing succinate. The Crabtree effect promoted by PEP was concentration-dependent and was lowered by an increase of ADP concentration, suggesting a participation of PK. The dependence of fructose-1,6-bisphosphate (FDP) by HeLa cell PK was observed. The PK of HeLa cells was inhibited by L-alanine only in the absence of FDP, while in the presence of the metabolite, an increase in the activity was observed. PK was also inhibited in the presence of L-histidine and L-leucine, while L-serine promoted activation. L-Cysteine and L-phenylalanine also inhibited the PK of HeLa cells. This, together with the sigmoidal character in relation to substrate concentration, suggests the presence of the K-type of PK in HeLa cells.
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Affiliation(s)
- R F Melo
- Departamento do Bioquímica da Universidade Federal do Paraná Curitiba, Brasil
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Brand K. Aerobic glycolysis by proliferating cells: protection against oxidative stress at the expense of energy yield. J Bioenerg Biomembr 1997; 29:355-64. [PMID: 9387096 DOI: 10.1023/a:1022498714522] [Citation(s) in RCA: 115] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Primary cultures of mitogen-activated rat thymocytes were used to study energy metabolism, gene expression of glycolytic enzymes, and production of reactive oxygen species during cell cycle progression. During transition from the resting to the proliferating state a 7- to 10-fold increase of glycolytic enzyme induction occurs which enables the cells to meet the enhanced energy demand by increased aerobic glycolysis. Cellular redox changes have been found to regulate gene expression of glycolytic enzymes by reversible oxidative inactivation of Sp1-binding to the cognate DNA-binding sites in the promoter region. In contrast to nonproliferating cells, production of phorbol 12-myristate 13-acetate (PMA)-primed reactive oxygen species (ROS) in proliferating rat thymocytes and HL-60 cells is nearly abolished. Pyruvate, a product of aerobic glycolysis, is an effective scavenger of ROS, which could be shown to be generated mainly at the site of complex III of the mitochondrial respiratory chain. Aerobic glycolysis by proliferating cells is discussed as a means to minimize oxidative stress during the phases of the cell cycle when maximally enhanced biosynthesis and cell division do occur.
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Affiliation(s)
- K Brand
- Institute of Biochemistry, Medical Faculty, University of Erlangen-Nuremberg, Germany
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Schoff PK, First NL. Stimulation of bovine sperm motility and respiration by the triazine dye cibacron blue F3GA. Mol Reprod Dev 1995; 42:65-71. [PMID: 8562052 DOI: 10.1002/mrd.1080420109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Bovine sperm motility and respiration were stimulated by the triazine dye Cibacron Blue F3GA (CB), which may operate as a nucleotide mimic. CB stimulation of respiration was half-maximal at about 35 microM and respiration reached maximal levels about 1.5 minutes after CB addition. Respiratory stimulation was preceded by a transient increase in cytosolic cAMP. Sperm cAMP titers were elevated from 5 to 10 pmoles/10(8) cells within 30 seconds of CB addition, but rapidly dropped to a stable level of about 7.5 pmoles/10(8) cells. CB was a potent inhibitor of sperm membrane adenylyl cyclase and inhibited respiration in permeabilized cells. Taken together, the data indicated that CB stimulation was not manifested via the cytosol. In addition, a nonpermeant blue dextran preparation synthesized with CB also stimulated sperm respiration and motility. CB inhibited sperm membrane phosphodiesterase activity, suggesting that the transient pulse of cAMP resulted from CB interaction with this enzyme in the sperm membrane.
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Affiliation(s)
- P K Schoff
- Department of Meat and Animal Science, University of Wisconsin, Madison, USA
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Mújica A, Neri-Bazan L, Tash JS, Uribe S. Mechanism for procaine-mediated hyperactivated motility in guinea pig spermatozoa. Mol Reprod Dev 1994; 38:285-92. [PMID: 7917280 DOI: 10.1002/mrd.1080380309] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Hyperactivated motility was studied in guinea pig spermatozoa. In the presence of the local anesthetic procaine, a high number of sperm cells (64%) showed hyperactivation when incubated in minimal culture medium with pyruvate, lactate, and glucose. Hyperactivated motility was dependent on glucose in the medium. Sperm ATP concentration was increased twofold in hyperactivated sperm when compared to procaine-treated non-hyperactivated cells. cAMP levels were also higher in hyperactivated cells than in control spermatozoa. Thus, in living spermatozoa high levels of ATP appear to be needed to generate hyperactivation. cAMP is present at a high concentration in hyperactivated spermatozoa, therefore a role of cAMP in hyperactivation cannot be excluded. Depletion of external Ca2+ did not inhibit procaine-induced hyperactivated motility. Hence, procaine canceled the requirement of external Ca2+ for sperm to express hyperactivated motility.
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Affiliation(s)
- A Mújica
- Departamento de Biología Celular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, México, D.F. México
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Guppy M, Greiner E, Brand K. The role of the Crabtree effect and an endogenous fuel in the energy metabolism of resting and proliferating thymocytes. EUROPEAN JOURNAL OF BIOCHEMISTRY 1993; 212:95-9. [PMID: 8444168 DOI: 10.1111/j.1432-1033.1993.tb17637.x] [Citation(s) in RCA: 159] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Rat thymocytes have been used to characterize the changes in energy metabolism that occur as cells undergo a resting/proliferation transition. In the resting state, anaerobic ATP production accounts for only 4% of ATP turnover. The remainder is fueled by the oxidation of a mixture of an unidentified endogenous fuel (62%), glucose (18%) and glutamine (16%). 48 h after mitogen stimulation, the ATP turnover has increased twofold. In these proliferating cells, glucose inhibits oxygen consumption by 58%, indicating a profound Crabtree effect which is not present in resting cells. Consequently, proliferating cells, in the presence of glucose and glutamine, fuel the majority (61%) of ATP turnover anaerobically, producing lactate from glucose. The development of a Crabtree effect may be the result of the 8-10-fold increase in glycolytic enzyme activities which occurs with proliferation. Possible advantages of such a proliferative metabolism are a sparing of endogenous fuel, and a minimizing of oxidative metabolism, with its concurrent production of free radicals.
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Affiliation(s)
- M Guppy
- Institute of Biochemistry, Medical Faculty, University of Erlangen-Nürnberg, Federal Republic of Germany
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