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Ali W, Chen Y, Hassan MF, Wang T, Khatyan U, Sun J, Liu Z, Zou H. Osmoregulatory and immunological role of new canceled cells: Mitochondrial rich cells and its future perspective: A concise review. JOURNAL OF EXPERIMENTAL ZOOLOGY. PART A, ECOLOGICAL AND INTEGRATIVE PHYSIOLOGY 2024; 341:99-106. [PMID: 37905465 DOI: 10.1002/jez.2764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 09/22/2023] [Accepted: 10/02/2023] [Indexed: 11/02/2023]
Abstract
Mitochondrial-rich cells (MRCs) are one of the most significant canceled type of epithelial cells. Morphologically these cells are totally different from other epithelial cells. These cells primarily implicated in sea-water and fresh-water adaptation, and acid-base regulation. However, in this review paper, we explored some of the most intriguing biological and immune-related functional developmental networks of MRCs. The main pinpoint, MRCs perform a dynamic osmoregulatory and immunological functional role in the gut and male reproductive system. The Na+/K+_ATPase (NKA) and Na+/K+/2Cl cotransporter (NKCC) are key acidifying proteins of MRCs for the ion-transporting function for intestinal homeostasis and maintenance of acidifying the luminal microenvironment in the male reproductive system. Further more importantly, MRCs play a novel immunological role through the exocrine secretion of nano-scale exosomes and multivesicular bodies (MVBs) pathway, which is very essential for sperm maturation, motility, acrosome reaction, and male sex hormones, and these an essential events to produce male gametes with optimal fertilizing ability. This effort is expected to promote the novel immunological role of MRCs, which might be essential for nano-scale exosome secretion.
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Affiliation(s)
- Waseem Ali
- Department of Veterinary Internal medicine & Clinical Diagnosis, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, People's Republic of China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu, People's Republic of China
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, People's Republic of China
| | - Yan Chen
- Department of Veterinary Internal medicine & Clinical Diagnosis, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, People's Republic of China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu, People's Republic of China
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, People's Republic of China
| | - Mohammad Farooque Hassan
- Department of Veterinary Internal medicine & Clinical Diagnosis, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, People's Republic of China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu, People's Republic of China
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, People's Republic of China
| | - Tao Wang
- Department of Veterinary Internal medicine & Clinical Diagnosis, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, People's Republic of China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu, People's Republic of China
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, People's Republic of China
| | - Uzma Khatyan
- Department of Veterinary Internal medicine & Clinical Diagnosis, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, People's Republic of China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu, People's Republic of China
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, People's Republic of China
| | - Jian Sun
- Department of Veterinary Internal medicine & Clinical Diagnosis, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, People's Republic of China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu, People's Republic of China
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, People's Republic of China
| | - Zongping Liu
- Department of Veterinary Internal medicine & Clinical Diagnosis, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, People's Republic of China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu, People's Republic of China
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, People's Republic of China
| | - Hui Zou
- Department of Veterinary Internal medicine & Clinical Diagnosis, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, People's Republic of China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu, People's Republic of China
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, People's Republic of China
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2
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Gonzalez-Castro RA, Carnevale EM. Phospholipase C Zeta 1 (PLCZ1): The Function and Potential for Fertility Assessment and In Vitro Embryo Production in Cattle and Horses. Vet Sci 2023; 10:698. [PMID: 38133249 PMCID: PMC10747197 DOI: 10.3390/vetsci10120698] [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: 10/24/2023] [Revised: 12/01/2023] [Accepted: 12/05/2023] [Indexed: 12/23/2023] Open
Abstract
Phospholipase C Zeta 1 (PLCZ1) is considered a major sperm-borne oocyte activation factor. After gamete fusion, PLCZ1 triggers calcium oscillations in the oocyte, resulting in oocyte activation. In assisted fertilization, oocyte activation failure is a major cause of low fertility. Most cases of oocyte activation failures in humans related to male infertility are associated with gene mutations and/or altered PLCZ1. Consequently, PLCZ1 evaluation could be an effective diagnostic marker and predictor of sperm fertilizing potential for in vivo and in vitro embryo production. The characterization of PLCZ1 has been principally investigated in men and mice, with less known about the PLCZ1 impact on assisted reproduction in other species, such as cattle and horses. In horses, sperm PLCZ1 varies among stallions, and sperm populations with high PLCZ1 are associated with cleavage after intracytoplasmic sperm injection (ICSI). In contrast, bull sperm is less able to initiate calcium oscillations and undergo nuclear remodeling, resulting in poor cleavage after ICSI. Advantageously, injections of PLCZ1 are able to rescue oocyte failure in mouse oocytes after ICSI, promoting full development and birth. However, further research is needed to optimize PLCZ1 diagnostic tests for consistent association with fertility and to determine whether PLCZ1 as an oocyte-activating treatment is a physiological, efficient, and safe method for improving assisted fertilization in cattle and horses.
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Affiliation(s)
| | - Elaine M. Carnevale
- Equine Reproduction Laboratory, Department of Biomedical Sciences, Colorado State University, Fort Collins, CO 80523, USA;
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Bollwein H, Malama E. Review: Evaluation of bull fertility. Functional and molecular approaches. Animal 2023; 17 Suppl 1:100795. [PMID: 37567681 DOI: 10.1016/j.animal.2023.100795] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 03/22/2023] [Accepted: 03/23/2023] [Indexed: 08/13/2023] Open
Abstract
With the term "assisted reproduction technologies" in modern cattle farming, one could imply the collection of techniques that aim at the optimal use of bovine gametes to produce animals of high genetic value in a time- and cost-efficient manner. The accurate characterisation of sperm quality plays a critical role for the efficiency of several assisted reproduction-related procedures, such as sperm processing, in vitro embryo production and artificial insemination. Bull fertility is ultimately a collective projection of the ability of a series of ejaculates to endure sperm processing stress, and achieve fertilisation of the oocyte and production of a viable and well-developing embryo. In this concept, the assessment of sperm functional and molecular characteristics is key to bull fertility diagnostics and prognostics. Among others, functional features linked to sperm plasma membrane, acrosome and DNA integrity are usually assessed as a measure of the ability of sperm to express the phenotypes that will allow them to maintain their homeostasis and orchestrate-in a strict temporal manner-the course of events that will enable the delivery of their genetic content to the oocyte upon fertilisation. Nevertheless, measures of sperm functionality are not always adequate indicators of bull fertility. Nowadays, advancements in the field of molecular biology have facilitated the profiling of several biomolecules in male gametes. The molecular profiling of bovine sperm offers a deeper insight into the mechanisms underlying sperm physiology and, thus, can reveal novel candidate markers for bull fertility prognosis. In this review, the importance of three organelles (the nucleus, the plasma membrane and the acrosome) for the characterisation of sperm fertilising capacity and bull fertility is discussed at functional and molecular levels. In particular, information about sperm head morphometry, chromatin structure, viability as well as the ability of sperm to capacitate and undergo the acrosome reaction are presented in relation to the cryotolerance of male gametes and bull fertility. Finally, major spermatozoal coding and non-coding RNAs, and proteins that are involved in the above-mentioned aspects of sperm functionality are also summarised.
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Affiliation(s)
- H Bollwein
- Clinic of Reproductive Medicine, Department for Farm Animals, Vetsuisse Faculty, University of Zurich, Winterthurerstrasse 260, 8057 Zurich, Switzerland.
| | - E Malama
- Clinic of Reproductive Medicine, Department for Farm Animals, Vetsuisse Faculty, University of Zurich, Winterthurerstrasse 260, 8057 Zurich, Switzerland
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4
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Pinto FM, Odriozola A, Candenas L, Subirán N. The Role of Sperm Membrane Potential and Ion Channels in Regulating Sperm Function. Int J Mol Sci 2023; 24:6995. [PMID: 37108159 PMCID: PMC10138380 DOI: 10.3390/ijms24086995] [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: 02/26/2023] [Revised: 04/02/2023] [Accepted: 04/05/2023] [Indexed: 04/29/2023] Open
Abstract
During the last seventy years, studies on mammalian sperm cells have demonstrated the essential role of capacitation, hyperactivation and the acrosome reaction in the acquisition of fertilization ability. These studies revealed the important biochemical and physiological changes that sperm undergo in their travel throughout the female genital tract, including changes in membrane fluidity, the activation of soluble adenylate cyclase, increases in intracellular pH and Ca2+ and the development of motility. Sperm are highly polarized cells, with a resting membrane potential of about -40 mV, which must rapidly adapt to the ionic changes occurring through the sperm membrane. This review summarizes the current knowledge about the relationship between variations in the sperm potential membrane, including depolarization and hyperpolarization, and their correlation with changes in sperm motility and capacitation to further lead to the acrosome reaction, a calcium-dependent exocytosis process. We also review the functionality of different ion channels that are present in spermatozoa in order to understand their association with human infertility.
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Affiliation(s)
- Francisco M. Pinto
- Instituto de Investigaciones Químicas, CSIC-University of Sevilla, Avenida Américo Vespucio 49, 41092 Sevilla, Spain;
| | - Ainize Odriozola
- Department of Physiology, Faculty of Medicine and Nursery, University of the Basque Country (UPV/EHU), 48940 Bizkaia, Spain; (A.O.); (N.S.)
- Biocruces-Bizkaia Health Research Institute, 48903 Barakaldo, Spain
- MEPRO Medical Reproductive Solutions, 20009 San Sebastian, Spain
| | - Luz Candenas
- Instituto de Investigaciones Químicas, CSIC-University of Sevilla, Avenida Américo Vespucio 49, 41092 Sevilla, Spain;
| | - Nerea Subirán
- Department of Physiology, Faculty of Medicine and Nursery, University of the Basque Country (UPV/EHU), 48940 Bizkaia, Spain; (A.O.); (N.S.)
- Biocruces-Bizkaia Health Research Institute, 48903 Barakaldo, Spain
- MEPRO Medical Reproductive Solutions, 20009 San Sebastian, Spain
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5
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Sushadi PS, Kuwabara M, Iimura H, Asano A. Factors affecting cryopreservation-associated damages in sperm motility of cockerels ( Gallus gallus domesticus). Br Poult Sci 2023; 64:129-136. [PMID: 36103116 DOI: 10.1080/00071668.2022.2124099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
1. Sperm are exposed to severe osmotic stress during cryopreservation, which results in impairment of fertilisation ability, including motility and viability, in poultry. Sperm osmotolerance is regulated by many extracellular factors and varies widely in birds, leading to uncertainty in the nature of the osmotic injury.2. Tail bending is a primary response resulting from cell swelling from excessive osmotic stress. However, the underlying mechanism responsible for tail bending is largely unknown. This study examined the relationship between osmotic stress and post-thaw motility, with a particular focus on the role of Na+/K+ ATPase (NKA) in the tail bending response.3. Cryopreserved sperm exhibited rapidly reduced motility when maintained at 37°C. The combination of temperature change and osmotic stress was a primary factor responsible for tail bending. This work tested a hypothesis known to be associated with post-thaw tail abnormality in other species and found that cold shock, that is not accompanied by an apoptotic response, may occur. Ouabain inhibition of Na+/K+ ATPase activity alleviated the tail bending response in fresh and post-thaw sperm.4. These results demonstrated that the combination of temperature change and osmotic stress has a primary impact on the reduction of post-thaw motility, with a particular role in NKA activity, in the tail bending response of chicken sperm. These results provide a foundation for establishing cryopreservation methodology to ensure the optimal fertilisation potential of cryopreserved chicken sperm.
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Affiliation(s)
- P S Sushadi
- Graduate School of Life and Environmental Sciences, Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Japan
| | - M Kuwabara
- College of Agro-biological Resource Sciences, University of Tsukuba, Tsukuba, Japan
| | - H Iimura
- Graduate School of Life and Environmental Sciences, Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Japan
| | - A Asano
- Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Japan
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6
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Testis-Specific Isoform of Na+-K+ ATPase and Regulation of Bull Fertility. Int J Mol Sci 2022; 23:ijms23147936. [PMID: 35887284 PMCID: PMC9317330 DOI: 10.3390/ijms23147936] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 07/08/2022] [Accepted: 07/11/2022] [Indexed: 12/10/2022] Open
Abstract
An advanced understanding of sperm function is relevant for evidence-based male fertility prediction and addressing male infertility. A standard breeding soundness evaluation (BSE) merely identifies gross abnormalities in bulls, whereas selection based on single nucleotide polymorphisms and genomic estimated breeding values overlooks sub-microscopic differences in sperm. Molecular tools are important for validating genomic selection and advancing knowledge on the regulation of male fertility at an interdisciplinary level. Therefore, research in this field is now focused on developing a combination of in vitro sperm function tests and identifying biomarkers such as sperm proteins with critical roles in fertility. The Na+-K+ ATPase is a ubiquitous transmembrane protein and its α4 isoform (ATP1A4) is exclusively expressed in germ cells and sperm. Furthermore, ATP1A4 is essential for male fertility, as it interacts with signaling molecules in both raft and non-raft fractions of the sperm plasma membrane to regulate capacitation-associated signaling, hyperactivation, sperm-oocyte interactions, and activation. Interestingly, ATP1A4 activity and expression increase during capacitation, challenging the widely accepted dogma of sperm translational quiescence. This review discusses the literature on the role of ATP1A4 during capacitation and fertilization events and its prospective use in improving male fertility prediction.
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7
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Numata S, McDermott JP, Sanchez G, Mitra A, Blanco G. The sodium-glucose cotransporter isoform 1 (SGLT-1) is important for sperm energetics, motility, and fertility†. Biol Reprod 2022; 106:1206-1217. [PMID: 35420639 PMCID: PMC9199017 DOI: 10.1093/biolre/ioac052] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 02/09/2022] [Accepted: 02/28/2022] [Indexed: 01/10/2023] Open
Abstract
Glucose is a key substrate for supporting sperm energy production and function. Previous studies have demonstrated that sperm glucose uptake is facilitated by several isoforms of the glucose transporters (GLUT). Here, we report that sperm also expresses the Na+-dependent sodium glucose cotransporter (SGLT). This was first suggested by our observation that genetic deletion of the testis-specific Na,K-ATPase α4, which impairs the sperm plasma membrane Na+ gradient, reduces glucose uptake and ATP production. Immunoblot analysis revealed the presence of an SGLT in sperm, with specific expression of isoform 1 (SGLT-1), but not of isoform 2 (SGLT-2). Immunocytochemistry identified SGLT-1 in the mid- and principal piece of the sperm flagellum. Inhibition of SGLT-1 with the isotype-selective inhibitor phlorizin significantly reduced glucose uptake, glycolytic activity, and ATP production in noncapacitated and capacitated sperm from wild-type mice. Phlorizin also decreased total sperm motility, as well as other parameters of sperm movement. In contrast, inhibition of SGLT-1 had no significant effect on sperm hyperactivation, protein tyrosine phosphorylation, or acrosomal reaction. Importantly, phlorizin treatment impaired the fertilizing capacity of sperm. Altogether, these results demonstrate that mouse sperm express a functional SGLT transport system that is important for supporting sperm energy production, motility, and fertility.
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Affiliation(s)
- September Numata
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, KS, USA
| | - Jeff P McDermott
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, KS, USA
| | - Gladis Sanchez
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, KS, USA
| | - Amrita Mitra
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, KS, USA
| | - Gustavo Blanco
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, KS, USA
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Cavarocchi E, Whitfield M, Saez F, Touré A. Sperm Ion Transporters and Channels in Human Asthenozoospermia: Genetic Etiology, Lessons from Animal Models, and Clinical Perspectives. Int J Mol Sci 2022; 23:ijms23073926. [PMID: 35409285 PMCID: PMC8999829 DOI: 10.3390/ijms23073926] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 03/29/2022] [Accepted: 03/30/2022] [Indexed: 12/18/2022] Open
Abstract
In mammals, sperm fertilization potential relies on efficient progression within the female genital tract to reach and fertilize the oocyte. This fundamental property is supported by the flagellum, an evolutionarily conserved organelle that provides the mechanical force for sperm propulsion and motility. Importantly several functional maturation events that occur during the journey of the sperm cells through the genital tracts are necessary for the activation of flagellar beating and the acquisition of fertilization potential. Ion transporters and channels located at the surface of the sperm cells have been demonstrated to be involved in these processes, in particular, through the activation of downstream signaling pathways and the promotion of novel biochemical and electrophysiological properties in the sperm cells. We performed a systematic literature review to describe the currently known genetic alterations in humans that affect sperm ion transporters and channels and result in asthenozoospermia, a pathophysiological condition defined by reduced or absent sperm motility and observed in nearly 80% of infertile men. We also present the physiological relevance and functional mechanisms of additional ion channels identified in the mouse. Finally, considering the state-of-the art, we discuss future perspectives in terms of therapeutics of asthenozoospermia and male contraception.
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Affiliation(s)
- Emma Cavarocchi
- Institute for Advanced Biosciences, INSERM U1209, CNRS UMR5309, Université Grenoble Alpes, 38000 Grenoble, France; (E.C.); (M.W.)
| | - Marjorie Whitfield
- Institute for Advanced Biosciences, INSERM U1209, CNRS UMR5309, Université Grenoble Alpes, 38000 Grenoble, France; (E.C.); (M.W.)
| | - Fabrice Saez
- UMR GReD Institute (Génétique Reproduction & Développement) CNRS 6293, INSERM U1103, Team «Mécanismes de L’Infertilité Mâle Post-Testiculaire», Université Clermont Auvergne, 63000 Clermont-Ferrand, France
- Correspondence: (F.S.); (A.T.)
| | - Aminata Touré
- Institute for Advanced Biosciences, INSERM U1209, CNRS UMR5309, Université Grenoble Alpes, 38000 Grenoble, France; (E.C.); (M.W.)
- Correspondence: (F.S.); (A.T.)
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9
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Peroxiredoxin 6 Peroxidase and Ca 2+-Independent Phospholipase A 2 Activities Are Essential to Support Male-Mouse Fertility. Antioxidants (Basel) 2022; 11:antiox11020226. [PMID: 35204109 PMCID: PMC8868156 DOI: 10.3390/antiox11020226] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 01/22/2022] [Accepted: 01/23/2022] [Indexed: 02/06/2023] Open
Abstract
Human infertility is an important health problem that affects one in six couples worldwide. Half of these cases are due to male infertility. Oxidative stress is a common culprit of male infertility, promoting lipid peroxidation and the oxidation of proteins and DNA in spermatozoa, thereby impairing motility, capacitation and fertilization. Peroxiredoxin 6 (PRDX6) possesses peroxidase and Ca2+-independent-phospholipase-A2 (iPLA2) activities that scavenge ROS and repair oxidized sperm membranes, respectively. PRDX6 protects spermatozoa against oxidative stress. Infertile men’s spermatozoa have impaired motility, elevated lipid peroxidation levels and DNA damage due to low PRDX6 levels. A lack of PRDX6 is associated with male-mouse infertility. Here, we determined the impact of the absence of PRDX6 peroxidase or iPLA2 activities on male-mouse fertility. Two-month-old male C57Bl6/J (wild-type), Prdx6−/−, C47S and D140A knock-in (peroxidase- and iPLA2-deficient, respectively) male mice were challenged with an in vivo oxidative stress triggered by tert-butyl hydroperoxide (t-BHP). C47S and D140A males produced smaller litters compared to wild-type controls. The t-BHP treatment promoted a lower number of pups, high levels of lipid peroxidation, tyrosine nitration, and DNA oxidation in all mutant spermatozoa compared to wild-type controls. All mutant spermatozoa had impaired capacitation and motility. In summary, both PRDX6 peroxidase and iPLA2 activities are essential to support male-mouse fertility.
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10
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Favia M, Gerbino A, Notario E, Tragni V, Sgobba MN, Dell’Aquila ME, Pierri CL, Guerra L, Ciani E. The Non-Gastric H+/K+ ATPase (ATP12A) Is Expressed in Mammalian Spermatozoa. Int J Mol Sci 2022; 23:ijms23031048. [PMID: 35162971 PMCID: PMC8835340 DOI: 10.3390/ijms23031048] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 01/15/2022] [Accepted: 01/17/2022] [Indexed: 12/10/2022] Open
Abstract
H+/K+ ATPase Type 2 is an heteromeric membrane protein involved in cation transmembrane transport and consists of two subunits: a specific α subunit (ATP12A) and a non-specific β subunit. The aim of this study was to demonstrate the presence and establish the localization of ATP12A in spermatozoa from Bubalus bubalis, Bos taurus and Ovis aries. Immunoblotting revealed, in all three species, a major band (100 kDa) corresponding to the expected molecular mass. The ATP12A immunolocalization pattern showed, consistently in the three species, a strong signal at the acrosome. These results, described here for the first time in spermatozoa, are consistent with those observed for the β1 subunit of Na+/K+ ATPase, suggesting that the latter may assemble with the α subunit to produce a functional ATP12A dimer in sperm cells. The above scenario appeared to be nicely supported by 3D comparative modeling and interaction energy calculations. The expression of ATP12A during different stages of bovine sperm maturation progressively increased, moving from epididymis to deferent ducts. Based on overall results, we hypothesize that ATP12A may play a role in acrosome reactions. Further studies will be required in order to address the functional role of this target protein in sperm physiology.
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11
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Liu W, Zhang L, Gao A, Khawar MB, Gao F, Li W. Food-Derived High Arginine Peptides Promote Spermatogenesis Recovery in Busulfan Treated Mice. Front Cell Dev Biol 2021; 9:791471. [PMID: 34993200 PMCID: PMC8724571 DOI: 10.3389/fcell.2021.791471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Accepted: 12/03/2021] [Indexed: 11/25/2022] Open
Abstract
Food-derived peptides with high arginine content have important applications in medicine and food industries, but their potential application in the treatment of oligoasthenospermia remains elusive. Here, we report that high-arginine peptides, such as Oyster peptides and Perilla purple peptides were able to promote spermatogenesis recovery in busulfan-treated mice. We found that both Opp and Ppp could increase sperm concentration and motility after busulfan-induced testicular damage in mice. Further research revealed that Opp and Ppp might promote spermatogonia proliferation, which improved blood-testis barrier recovery between Sertoli cells. Taken together, these high-arginine peptides might be used as a medication or therapeutic component of a diet prescription to improve the fertility of some oligoasthenospermia patients.
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Affiliation(s)
- Wenwen Liu
- College of Life Sciences, University of Science and Technology of China, Hefei, China
- Institute of Reproductive Health and Perinatology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Lingfeng Zhang
- Institute of Reproductive Health and Perinatology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Anning Gao
- College of Biology and Food, Shangqiu Normal University, Shangqiu, China
| | - Muhammad Babar Khawar
- Molecular Medicine and Cancer Therapeutics Lab, Department of Zoology, Faculty of Sciences, University of Central Punjab, Lahore, Pakistan
| | - Fengyi Gao
- College of Biology and Food, Shangqiu Normal University, Shangqiu, China
- *Correspondence: Fengyi Gao, ; Wei Li,
| | - Wei Li
- Institute of Reproductive Health and Perinatology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- *Correspondence: Fengyi Gao, ; Wei Li,
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12
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Warren BD, Ahn SH, Brittain KS, Nanjappa MK, Wang H, Wang J, Blanco G, Sanchez G, Fan Y, Petroff BK, Cooke PS, Petroff MG. Multiple Lesions Contribute to Infertility in Males Lacking Autoimmune Regulator. THE AMERICAN JOURNAL OF PATHOLOGY 2021; 191:1592-1609. [PMID: 34126085 PMCID: PMC8420865 DOI: 10.1016/j.ajpath.2021.05.021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 04/21/2021] [Accepted: 05/18/2021] [Indexed: 11/15/2022]
Abstract
Male factors, including those of autoimmune origin, contribute to approximately 50% of infertility cases in humans. However, the mechanisms underlying autoimmune male infertility are poorly understood. Deficiency in autoimmune regulator (AIRE) impairs central immune tolerance because of diminished expression of self-antigens in the thymus. Humans with AIRE mutations and mice with engineered ablation of Aire develop multiorgan autoimmunity and infertility. To determine the immune targets contributing to infertility in male Aire-deficient (-/-) mice, Aire-/- or wild-type (WT) males were paired with WT females. Aire-/- males exhibited dramatically reduced mating frequency and fertility, hypogonadism, and reduced serum testosterone. Approximately 15% of mice exhibited lymphocytic infiltration into the testis, accompanied by atrophy, azoospermia, and reduced numbers of mitotically active germ cells; the remaining mice showed normal testicular morphology, sperm counts, and motility. However, spermatozoa from all Aire-/- mice were defective in their ability to fertilize WT oocytes in vitro. Lymphocytic infiltration into the epididymis, seminal vesicle, and prostate gland was evident. Aire-/- male mice generated autoreactive antibodies in an age-dependent manner against sperm, testis, epididymis, prostate gland, and seminal vesicle. Finally, expression of Aire was evident in the seminiferous epithelium in an age-dependent manner, as well as in the prostate gland. These findings suggest that Aire-dependent central tolerance plays a critical role in maintaining male fertility by stemming autoimmunity against multiple reproductive targets.
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Affiliation(s)
- Bryce D Warren
- Department of Anatomy and Cell Biology, University of Kansas Medical Center, Kansas City, Kansas
| | - Soo H Ahn
- Department of Pathobiology and Diagnostic Investigation, College of Veterinary Medicine, Michigan State University, East Lansing, Michigan
| | - Kathryn S Brittain
- Department of Pathobiology and Diagnostic Investigation, College of Veterinary Medicine, Michigan State University, East Lansing, Michigan; Cell and Molecular Biology Graduate Program, College of Natural Sciences, Michigan State University, East Lansing, Michigan
| | - Manjunatha K Nanjappa
- Department of Physiological Sciences, College of Veterinary Medicine, University of Florida, Gainesville, Florida
| | - Hao Wang
- Department of Computational Mathematics, Science and Engineering, College of Engineering, Michigan State University, East Lansing, Michigan
| | - Jianrong Wang
- Department of Computational Mathematics, Science and Engineering, College of Engineering, Michigan State University, East Lansing, Michigan
| | - Gustavo Blanco
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, Kansas
| | - Gladis Sanchez
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, Kansas
| | - Yong Fan
- Institute of Cellular Therapeutics, Alleghany Health Network, Pittsburgh, Pennsylvania
| | - Brian K Petroff
- Department of Pathobiology and Diagnostic Investigation, College of Veterinary Medicine, Michigan State University, East Lansing, Michigan
| | - Paul S Cooke
- Department of Physiological Sciences, College of Veterinary Medicine, University of Florida, Gainesville, Florida
| | - Margaret G Petroff
- Department of Anatomy and Cell Biology, University of Kansas Medical Center, Kansas City, Kansas; Department of Pathobiology and Diagnostic Investigation, College of Veterinary Medicine, Michigan State University, East Lansing, Michigan; Cell and Molecular Biology Graduate Program, College of Natural Sciences, Michigan State University, East Lansing, Michigan.
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13
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Na,K-ATPase α4, and Not Na,K-ATPase α1, is the Main Contributor to Sperm Motility, But its High Ouabain Binding Affinity Site is Not Required for Male Fertility in Mice. J Membr Biol 2021; 254:549-561. [PMID: 34129092 DOI: 10.1007/s00232-021-00181-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 04/28/2021] [Indexed: 01/05/2023]
Abstract
Mammalian sperm express two Na,K-ATPase (NKA) isoforms, Na,K-ATPase α4 (NKAα4) and Na,K-ATPase α1 (NKAα1). While NKAα4 is critical to sperm motility, the role of NKAα1 in sperm movement remains unknown. We determined this here using a genetic and pharmacological approach, modifying the affinity of NKAα1 and NKAα4 for the inhibitor ouabain to selectively block the function of each isoform. Sperm from wild-type (WT) mice (naturally containing ouabain-resistant NKAα1 and ouabain-sensitive NKAα4) and three newly generated mouse lines, expressing both NKAα1 and NKAα4 ouabain resistant (OR), ouabain sensitive (OS), and with their ouabain affinity switched (SW) were used. All mouse lines produced normal sperm numbers and were fertile. All sperm types showed NKAα isoform expression levels and activity comparable to WT, and kinetics for ouabain inhibition confirming the expected changes in ouabain affinity for each NKA isoform. Ouabain at 1 μM, which only block ouabain-sensitive NKA, significantly inhibited total, progressive, and hyperactivated sperm motility in WT and OS, but had no significant effect on OR or SW sperm. Higher ouabain (1 mM), which inhibits both ouabain-sensitive and ouabain-resistant NKA, had little additional effect on sperm motility in all mouse lines, including the OR and SW. A similar pattern was found for the effect of ouabain on sperm intracellular sodium ([Na+]i). These results indicate that NKAα4, but not NKAα1 is the main contributor to sperm motility and that the ouabain affinity site in NKA is not an essential requirement for male fertility.
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14
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McDermott JP, Numata S, Blanco G. Na,K-ATPase Atp1a4 isoform is important for maintaining sperm flagellar shape. J Assist Reprod Genet 2021; 38:1493-1505. [PMID: 33977467 DOI: 10.1007/s10815-021-02087-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Accepted: 01/21/2021] [Indexed: 11/29/2022] Open
Abstract
PURPOSE The aim of this study is to investigate the mechanisms by which the testis specific Na,K-ATPase ion transport system (Atp1a4) controls sperm morphology and shape. METHODS Sperm from wild-type (WT) and Atp1a4 knockout (Atp1a4 KO) mice were analyzed morphologically, using light, transmission, and scanning electron microscopy; and functionally, applying sperm osmotic challenge and viability tests. In addition, a sperm proteomic study was performed. RESULTS Light microscopy confirmed that sperm lacking Atp1a4 present a bend at the junction of the mid- and principal piece of the flagellum. This bend had different degrees of angulation, reaching occasionally a complete flagellar retroflexion. The defect appeared in sperm collected from the cauda epididymis, but not the epididymal caput or the testis. Transmission and scanning electron microscopy revealed a dilation of the cytoplasm at the site of the bend, with fusion of the plasma membrane in overlapping segments of the flagellum. This was accompanied by defects in the axoneme and peri-axonemal structures. Sperm from Atp1a4 KO mice showed an abnormal response to hypoosmotic challenge with decreased viability, suggesting reduced capacity for volume regulation. Exposure to Triton X-100 only partially recovered the flagellar bend of Atp1a4 KO sperm, showing that factors other than osmotic regulation contribute to the flagellar defect. Interestingly, several key sperm structural proteins were expressed in lower amounts in Atp1a4 KO sperm, with no changes in their localization. CONCLUSIONS Altogether, our results show that Atp1a4 plays an important role in maintaining the proper shape of the sperm flagellum through both osmotic control and structurally related mechanisms.
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Affiliation(s)
- Jeff P McDermott
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, 3901 Rainbow Boulevard, Kansas City, KS, 66160, USA
| | - September Numata
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, 3901 Rainbow Boulevard, Kansas City, KS, 66160, USA
| | - Gustavo Blanco
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, 3901 Rainbow Boulevard, Kansas City, KS, 66160, USA.
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15
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Unnikrishnan V, Kastelic JP, Thundathil JC. Ouabain-induced activation of phospholipase C zeta and its contributions to bovine sperm capacitation. Cell Tissue Res 2021; 385:785-801. [PMID: 33885964 DOI: 10.1007/s00441-021-03455-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Accepted: 03/22/2021] [Indexed: 11/30/2022]
Abstract
The sperm-derived oocyte activating factor, phospholipase C zeta (PLC ζ), is the only PLC isoform reported in cattle. The objectives were to (1) localize PLC ζ in fresh and capacitated bovine sperm and (2) investigate the activation of PLC ζ during bull sperm capacitation and contributions of PLC activity to this process. We confirmed interaction of testis-specific isoform of Na/K-ATPase (ATP1A4) with PLC ζ (immunolocalization and immunoprecipitation) and tyrosine phosphorylation (immunoprecipitation) of PLC ζ (a post-translational protein modification commonly involved in activation of PLC in somatic cells) during capacitation. Furthermore, incubation of sperm under capacitating conditions upregulated PLC-mediated hyperactivated motility, tyrosine phosphoprotein content, acrosome reaction, and F-actin formation (flow cytometry), implying that PLC activity is enhanced during capacitation and contributing to these capacitation processes. In conclusion, we inferred that PLC ζ is activated during capacitation by tyrosine phosphorylation through a mechanism involving ATP1A4, contributing to capacitation-associated biochemical events.
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Affiliation(s)
- Veena Unnikrishnan
- Department of Production Animal Health, Faculty of Veterinary Medicine, University of Calgary, Calgary, CAL, T2N 4N1, Canada
| | - John P Kastelic
- Department of Production Animal Health, Faculty of Veterinary Medicine, University of Calgary, Calgary, CAL, T2N 4N1, Canada
| | - Jacob C Thundathil
- Department of Production Animal Health, Faculty of Veterinary Medicine, University of Calgary, Calgary, CAL, T2N 4N1, Canada.
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16
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Sperm ion channels and transporters in male fertility and infertility. Nat Rev Urol 2020; 18:46-66. [PMID: 33214707 DOI: 10.1038/s41585-020-00390-9] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/08/2020] [Indexed: 12/16/2022]
Abstract
Mammalian sperm cells must respond to cues originating from along the female reproductive tract and from the layers of the egg in order to complete their fertilization journey. Dynamic regulation of ion signalling is, therefore, essential for sperm cells to adapt to their constantly changing environment. Over the past 15 years, direct electrophysiological recordings together with genetically modified mouse models and human genetics have confirmed the importance of ion channels, including the principal Ca2+-selective plasma membrane ion channel CatSper, for sperm activity. Sperm ion channels and membrane receptors are attractive targets for both the development of contraceptives and infertility treatment drugs. Furthermore, in this era of assisted reproductive technologies, understanding the signalling processes implicated in defective sperm function, particularly those arising from genetic abnormalities, is of the utmost importance not only for the development of infertility treatments but also to assess the overall health of a patient and his children. Future studies to improve reproductive health care and overall health care as a function of the ability to reproduce should include identification and analyses of gene variants that underlie human infertility and research into fertility-related molecules.
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17
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Na +/K +-ATPase α4 regulates sperm hyperactivation while Na +/K +-ATPase α1 regulates basal motility in hamster spermatozoa. Theriogenology 2020; 157:48-60. [PMID: 32799127 DOI: 10.1016/j.theriogenology.2020.06.028] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 06/09/2020] [Accepted: 06/25/2020] [Indexed: 11/20/2022]
Abstract
Recently, it was reported that hamster sperm hyperactivation is regulated by extracellular Na+. Two types of catalytic Na+/K+-ATPase (NKA) α subunits (α1 and α4) are present in spermatozoa. In this work, the contribution of these NKA subunits to the regulation of hamster sperm hyperactivation was investigated using the specific inhibitor ouabain. When 10-6 M ouabain was added to the modified Tyrode's albumin lactate pyruvate medium (mTALP) medium, hyperactivation was significantly inhibited, whereas 10-5-10-4 M ouabain was needed to significantly reduce the amount of motile spermatozoa. When a more detailed analysis of flagellar movement was performed, 10-6 M ouabain suppressed the hyperactivation-associated change in the patterns of flagellar motion without affecting the sliding velocity of microtubules. Since 10-6 M ouabain specifically inhibits the α4 subunit while 10-5-10-4 M ouabain inhibits both the α1 and α4 subunits, these results suggest the α1 subunit is necessary for the maintenance of motility while the α4 subunit is necessary for the hyperactivation-associated change in flagellar movement. Ouabain did not inhibit tyrosine phosphorylation, and activation of tyrosine phosphorylation-dependent signaling had no effect on the inhibition of hyperactivation by ouabain. The immediate recovery of hyperactivation was observed when ouabain was washed out after a 3-h incubation. whereas the administration of ouabain after the onset of hyperactivation significantly inhibited hyperactivation. These results suggest ouabain inhibited hyperactivation in a manner that was independent of time-requiring phosphorylation-mediated signaling.
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18
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Syeda SS, Sánchez G, McDermott JP, Hong KH, Blanco G, Georg GI. The Na+ and K+ transport system of sperm (ATP1A4) is essential for male fertility and an attractive target for male contraception†. Biol Reprod 2020; 103:343-356. [PMID: 32588885 PMCID: PMC7401355 DOI: 10.1093/biolre/ioaa093] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 05/19/2020] [Indexed: 01/07/2023] Open
Abstract
One of the mechanisms that cells have developed to fulfil their specialized tasks is to express different molecular variants of a particular protein that has unique functional properties. Na,K-ATPase (NKA), the ion transport mechanism that maintains the transmembrane Na+ and K+ concentrations across the plasma membrane of cells, is one of such protein systems that shows high molecular and functional heterogeneity. Four different isoforms of the NKA catalytic subunit are expressed in mammalian cells (NKAα1, NKAα2, NKAα3, and NKAα4). NKAα4 (ATP1A4) is the isoform with the most restricted pattern of expression, being solely produced in male germ cells of the testis. NKAα4 is abundant in spermatozoa, where it is required for sperm motility and hyperactivation. This review discusses the expression, functional properties, mechanism of action of NKAα4 in sperm physiology, and its role in male fertility. In addition, we describe the use of NKAα4 as a target for male contraception and a potential approach to pharmacologically block its ion transport function to interfere with male fertility.
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Affiliation(s)
- Shameem Sultana Syeda
- Department of Medicinal Chemistry, College of Pharmacy, Institute for Therapeutics Discovery and Development, University of Minnesota, Minneapolis, MN 55414, USA
| | - Gladis Sánchez
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Jeffrey P McDermott
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Kwon Ho Hong
- Department of Medicinal Chemistry, College of Pharmacy, Institute for Therapeutics Discovery and Development, University of Minnesota, Minneapolis, MN 55414, USA
| | - Gustavo Blanco
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Gunda I Georg
- Department of Medicinal Chemistry, College of Pharmacy, Institute for Therapeutics Discovery and Development, University of Minnesota, Minneapolis, MN 55414, USA
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19
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Familial Hemiplegic Migraine with an ATP1A4 Mutation: Clinical Spectrum and Carbamazepine Efficacy. Brain Sci 2020; 10:brainsci10060372. [PMID: 32549268 PMCID: PMC7349335 DOI: 10.3390/brainsci10060372] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 06/09/2020] [Accepted: 06/12/2020] [Indexed: 11/16/2022] Open
Abstract
An Italian family with familial hemiplegic migraine (FHM) with the absence of mutations in the known genes associated with this disorder, namely ATP1A2, ATP1A3, CACNA1A, and SCN1A, has recently been reported. Soon afterward, whole exome sequencing allowed the identification of the carrier status of a heterozygous ATP1A4 mutation c.1798 C >T, in four affected members of this family. Here we compare the clinical symptoms of the affected family members with those from the other FHM families linked to mutations in the known genes associated with this disorder. A further two-year follow-up, including clinical response to carbamazepine administered to the proband and the maternal grandmother due to a worsening of the migraine symptoms, is reported. The clinical condition of the proband’s brother, carrying the same mutation and suffering from congenital ventricular and supraventricular extrasystoles, isdiscussed as well.
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20
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Molecular cloning and characterization of porcine Na⁺/K⁺-ATPase isoform α4. Biochimie 2019; 158:149-155. [PMID: 30633937 DOI: 10.1016/j.biochi.2019.01.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Accepted: 01/05/2019] [Indexed: 11/23/2022]
Abstract
Na+/K+-ATPase is responsible for maintaining electrochemical gradients of Na+ and K+, which is essential for a variety of cellular functions including neuronal activity. The α-subunit of the Na+/K+-ATPase is composed of four different polypeptides (α1-α4) encoded by different genes. Na,K-ATPase α4, encoded by the ATP1A4 gene, is expressed in testis and in male germ cells of humans, rats and mice. The α4 polypeptide has an important role in sperm motility, and is essential for male fertility. Here we present the RT-PCR cloning and characterization of the porcine ATP1A4 cDNA coding for Na⁺/K⁺-ATPase polypeptide α4. The Na⁺/K⁺-ATPase polypeptide α4, consisting of 1030 amino acids, displays a high homology with its human counterpart (86%). Phylogenetic analysis demonstrated that porcine Na⁺/K⁺-ATPase polypeptide α4 is closely related to other mammalian counterparts. In addition, the genomic structure of the porcine ATP1A4 gene was determined, and the intron-exon organization was found to be similar to that of the human ATP1A4 gene. The promoter sequence for the porcine ATP1A4 gene was also identified. Investigation of the genetic variation in the porcine ATP1A4 gene revealed a missense A/G SNP in exon 18. This A/G polymorphism results in a substitution of a methionine to a glycine residue (M888G). A very high overall DNA methylation rate of the ATP1A4 gene, 70-80%, was observed in both brain and liver. Expression analysis demonstrated that the porcine ATP1A4 gene is predominantly expressed in testis. The sequence of the porcine ATP1A4 cDNA encoding the Na⁺/K⁺-ATPase α4 protein has been submitted to GenBank under the accession number GenBank Accession No. MG587082.
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21
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Câmara DR, Kastelic JP, Thundathil JC. Role of the Na +/K +-ATPase ion pump in male reproduction and embryo development. Reprod Fertil Dev 2018; 29:1457-1467. [PMID: 27456939 DOI: 10.1071/rd16091] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Accepted: 06/19/2016] [Indexed: 12/18/2022] Open
Abstract
Na+/K+-ATPase was one of the first ion pumps studied because of its importance in maintaining osmotic and ionic balances between intracellular and extracellular environments, through the exchange of three Na+ ions out and two K+ ions into a cell. This enzyme, which comprises two main subunits (α and β), with or without an auxiliary polypeptide (γ), can have specific biochemical properties depending on the expression of associated isoforms (α1β1 and/or α2β1) in the cell. In addition to the importance of Na+/K+-ATPase in ensuring the function of many tissues (e.g. brain, heart and kidney), in the reproductive tract this protein is essential for embryo development because of its roles in blastocoel formation and embryo hatching. In the context of male reproduction, the discovery of a very specific subunit (α4), apparently restricted to male germ cells, only expressed after puberty and able to influence sperm function (e.g. motility and capacitation), opened a remarkable field for further investigations regarding sperm biology. Therefore, the present review focuses on the importance of Na+/K+-ATPase on male reproduction and embryo development.
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Affiliation(s)
- D R Câmara
- Faculdade de Medicina Veterinária, Universidade Federal de Alagoas, Fazenda São Luiz, s/n, Zona Rural do Município de Viçosa, Viçosa-AL, CEP: 57700-000, Brazil
| | - J P Kastelic
- Department of Production Animal Health, Faculty of Veterinary Medicine, University of Calgary, 3330 Hospital Dr., NW, Calgary, AB T2N 4N1, Canada
| | - J C Thundathil
- Department of Production Animal Health, Faculty of Veterinary Medicine, University of Calgary, 3330 Hospital Dr., NW, Calgary, AB T2N 4N1, Canada
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22
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Cheng JM, Tang JX, Li J, Wang YQ, Wang XX, Zhang Y, Chen SR, Liu YX. Role of WNT signaling in epididymal sperm maturation. J Assist Reprod Genet 2018; 35:229-236. [PMID: 29152689 PMCID: PMC5845038 DOI: 10.1007/s10815-017-1066-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Accepted: 10/11/2017] [Indexed: 02/03/2023] Open
Abstract
PURPOSE Spermatozoa maturation, a process required for spermatozoa to acquire progressive motility and the ability to fertilize ova, primarily occurs in the caput and corpus of the epididymis. Despite considerable efforts, the factor(s) promoting epididymal sperm maturation remains unclear. Recently, WNT signaling has been implicated in epididymal sperm maturation. METHODS To further investigate WNT signaling function in epididymal sperm maturation, we generated Wntless conditional knockout mice (Wls cKO), Wls flox/flox ; Lcn5-Cre. RESULTS In these mice, WNTLESS (WLS), a conserved membrane protein required for all WNT protein secretion, was specifically disrupted in the principal cells of the caput epididymidis. Immunoblot analysis showed that WLS was significantly reduced in the caput epididymidis of Wls cKO mice. In the caput epididymidis of Wls cKO mice, WNT 10A and WNT 2b, which are typically secreted by the principal cells of the caput epididymis, were not secreted. Interestingly, sperm motility analysis showed that the WLS deficiency in the caput epididymidis had no effect on sperm motility. Moreover, fertility tests showed that Wls cKO male mice had normal fertility. CONCLUSION These results indicate that the disruption of WLS in principal cells of the caput epididymidis inhibits WNT protein secretion but has no effect on sperm motility and male fertility, suggesting that WNT signaling in the caput epididymidis may be dispensable for epididymal sperm maturation in mice.
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Affiliation(s)
- Jin-Mei Cheng
- The State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Ji-Xin Tang
- The State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jian Li
- The State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yu-Qian Wang
- The State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiu-Xia Wang
- The State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Yan Zhang
- The State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Su-Ren Chen
- The State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Yi-Xun Liu
- The State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.
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23
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Syeda SS, Sánchez G, Hong KH, Hawkinson JE, Georg GI, Blanco G. Design, Synthesis, and in Vitro and in Vivo Evaluation of Ouabain Analogues as Potent and Selective Na,K-ATPase α4 Isoform Inhibitors for Male Contraception. J Med Chem 2018; 61:1800-1820. [PMID: 29291372 PMCID: PMC5846083 DOI: 10.1021/acs.jmedchem.7b00925] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
![]()
Na,K-ATPase α4 is a testis-specific
plasma membrane Na+ and K+ transporter expressed
in sperm flagellum.
Deletion of Na,K-ATPase α4 in male mice results in complete
infertility, making it an attractive target for male contraception.
Na,K-ATPase α4 is characterized by a high affinity for the cardiac
glycoside ouabain. With the goal of discovering selective inhibitors
of the Na,K-ATPase α4 and of sperm function, ouabain derivatives
were modified at the glycone (C3) and the lactone (C17) domains. Ouabagenin
analogue 25, carrying a benzyltriazole moiety at C17,
is a picomolar inhibitor of Na,K-ATPase α4, with an outstanding
α4 isoform selectivity profile. Moreover, compound 25 decreased sperm motility in vitro and in vivo and affected sperm
membrane potential, intracellular Ca2+, pH, and hypermotility.
These results proved that the new ouabagenin triazole analogue is
an effective and selective inhibitor of Na,K-ATPase α4 and sperm
function.
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Affiliation(s)
- Shameem Sultana Syeda
- Department of Medicinal Chemistry and Institute for Therapeutics Discovery and Development, College of Pharmacy , University of Minnesota , Minneapolis , Minnesota 55414 , United States
| | - Gladis Sánchez
- Department of Molecular and Integrative Physiology , University of Kansas Medical Center , Kansas City , Kansas 66160 , United States
| | - Kwon Ho Hong
- Department of Medicinal Chemistry and Institute for Therapeutics Discovery and Development, College of Pharmacy , University of Minnesota , Minneapolis , Minnesota 55414 , United States
| | - Jon E Hawkinson
- Department of Medicinal Chemistry and Institute for Therapeutics Discovery and Development, College of Pharmacy , University of Minnesota , Minneapolis , Minnesota 55414 , United States
| | - Gunda I Georg
- Department of Medicinal Chemistry and Institute for Therapeutics Discovery and Development, College of Pharmacy , University of Minnesota , Minneapolis , Minnesota 55414 , United States
| | - Gustavo Blanco
- Department of Molecular and Integrative Physiology , University of Kansas Medical Center , Kansas City , Kansas 66160 , United States
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24
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Ortega Ferrusola C, Anel-López L, Ortiz-Rodriguez JM, Martin Muñoz P, Alvarez M, de Paz P, Masot J, Redondo E, Balao da Silva C, Morrell JM, Rodriguez Martinez H, Tapia JA, Gil MC, Anel L, Peña FJ. Stallion spermatozoa surviving freezing and thawing experience membrane depolarization and increased intracellular Na . Andrology 2017; 5:1174-1182. [PMID: 28973824 DOI: 10.1111/andr.12419] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Revised: 07/03/2017] [Accepted: 07/25/2017] [Indexed: 12/13/2022]
Abstract
In order to gain insight of the modifications that freezing and thawing cause to the surviving population of spermatozoa, changes in the potential of the plasma membrane (Em) and intracellular Na+ content of stallion spermatozoa were investigated using flow cytometry. Moreover, caspase 3 activity was also investigated and the functionality of the Na+ -K+ ATPase pump was investigated before and after freezing and thawing. Cryopreservation caused a significant (p < 0.001) increase in the subpopulation of spermatozoa with depolarized sperm membranes, concomitantly with an increase (p < 0.05) in intracellular Na+ . These changes occurred in relation to activation of caspase 3 (p < 0.001). Cryopreservation reduced the activity of the Na-K+ pump and inhibition of the Na+ -K+ ATPase pump with ouabain-induced caspase 3 activation. It is concluded that inactivation of Na+ -K+ ATPase occurs during cryopreservation, an inhibition that could play a role explaining the accelerated senescence of the surviving population of spermatozoa.
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Affiliation(s)
- C Ortega Ferrusola
- Reproduction and Obstetrics Department of Animal Medicine and Surgery, University of León, León, Spain
| | - L Anel-López
- Reproduction and Obstetrics Department of Animal Medicine and Surgery, University of León, León, Spain
| | - J M Ortiz-Rodriguez
- Laboratory of Equine Reproduction and Equine Spermatology, Veterinary Teaching Hospital, University of Extremadura, Cáceres, Spain
| | - P Martin Muñoz
- Laboratory of Equine Reproduction and Equine Spermatology, Veterinary Teaching Hospital, University of Extremadura, Cáceres, Spain
| | - M Alvarez
- Reproduction and Obstetrics Department of Animal Medicine and Surgery, University of León, León, Spain
| | - P de Paz
- Department of Molecular Biology, University of León, León, Spain
| | - J Masot
- Laboratory of Equine Reproduction and Equine Spermatology, Veterinary Teaching Hospital, University of Extremadura, Cáceres, Spain
| | - E Redondo
- Laboratory of Equine Reproduction and Equine Spermatology, Veterinary Teaching Hospital, University of Extremadura, Cáceres, Spain
| | - C Balao da Silva
- Portalagre Polytechnic Institute, Superior Agriculture School of Elvas, Elvas, Portugal
| | - J M Morrell
- Division of Reproduction, Faculty of Veterinary Medicine and Animal Sciences, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - H Rodriguez Martinez
- Department of Clinical and Experimental Medicine, Faculty of Medicine & Health Sciences, Linköping University, Linköping, Sweden
| | - J A Tapia
- Laboratory of Equine Reproduction and Equine Spermatology, Veterinary Teaching Hospital, University of Extremadura, Cáceres, Spain
| | - M C Gil
- Laboratory of Equine Reproduction and Equine Spermatology, Veterinary Teaching Hospital, University of Extremadura, Cáceres, Spain
| | - L Anel
- Reproduction and Obstetrics Department of Animal Medicine and Surgery, University of León, León, Spain
| | - F J Peña
- Laboratory of Equine Reproduction and Equine Spermatology, Veterinary Teaching Hospital, University of Extremadura, Cáceres, Spain
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25
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Rajamanickam GD, Kastelic JP, Thundathil JC. Na/K-ATPase regulates bovine sperm capacitation through raft- and non-raft-mediated signaling mechanisms. Mol Reprod Dev 2017; 84:1168-1182. [PMID: 28833817 DOI: 10.1002/mrd.22879] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2016] [Accepted: 08/09/2017] [Indexed: 11/06/2022]
Abstract
Highly dynamic lipid microdomains (rafts) in the sperm plasma membrane contain several signaling proteins that regulate sperm capacitation. Na/K-ATPase isoforms (testis-specific isoform ATP1A4 and ubiquitous isoform ATP1A1) are abundant in bovine sperm plasma membrane. We previously reported that incubation of bovine sperm with ouabain, a specific Na/K-ATPase ligand, induced tyrosine phosphorylation of several sperm proteins during capacitation. The objective of this study was to investigate the roles of lipid rafts and non-rafts in Na/K-ATPase enzyme activity and signaling during bovine sperm capacitation. Content of ATP1A4 and, to a lesser extent, ATP1A1 was increased in raft and non-raft fractions of capacitated sperm, although non-raft enzyme activities of both isoforms were higher than the corresponding activities in rafts from capacitated sperm. Yet, ATP1A4 was the predominant isoform responsible for total Na/K-ATPase activity in both rafts and non-rafts. A comparative increase in phosphorylation of signaling molecules was observed in both raft (CAV1) and non-raft (EGFR and ERK1/2) membrane fractions during capacitation. Although SRC was phosphorylated in both membrane fractions, the non-raft fraction possessed more of this activated form. We also inferred, by immunoprecipitation, that ATP1A4 interacted with CAV1 and EGFR in the raft fraction, whereas interactions of ATP1A4 with SRC, EGFR, and ERK1/2 occurred in the non-raft fraction of ouabain-capacitated sperm; conversely, ATP1A1 interacted only with CAV1 in both fractions of uncapacitated and capacitated sperm. In conclusion, both raft and non-raft cohorts of Na/K-ATPase isoforms contributed to phosphorylation of signaling molecules during bovine sperm capacitation.
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Affiliation(s)
- Gayathri D Rajamanickam
- Faculty of Veterinary Medicine, Department of Production Animal Health, University of Calgary, Calgary, Alberta, Canada
| | - John P Kastelic
- Faculty of Veterinary Medicine, Department of Production Animal Health, University of Calgary, Calgary, Alberta, Canada
| | - Jacob C Thundathil
- Faculty of Veterinary Medicine, Department of Production Animal Health, University of Calgary, Calgary, Alberta, Canada
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26
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Bu P, Yagi S, Shiota K, Alam SMK, Vivian JL, Wolfe MW, Rumi MAK, Chakraborty D, Kubota K, Dhakal P, Soares MJ. Origin of a rapidly evolving homeostatic control system programming testis function. J Endocrinol 2017; 234:217-232. [PMID: 28576872 PMCID: PMC5529123 DOI: 10.1530/joe-17-0250] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2017] [Accepted: 06/02/2017] [Indexed: 12/24/2022]
Abstract
Mammals share common strategies for regulating reproduction, including a conserved hypothalamic-pituitary-gonadal axis; yet, individual species exhibit differences in reproductive performance. In this report, we describe the discovery of a species-restricted homeostatic control system programming testis growth and function. Prl3c1 is a member of the prolactin gene family and its protein product (PLP-J) was discovered as a uterine cytokine contributing to the establishment of pregnancy. We utilized mouse mutagenesis of Prl3c1 and revealed its involvement in the regulation of the male reproductive axis. The Prl3c1-null male reproductive phenotype was characterized by testiculomegaly and hyperandrogenism. The larger testes in the Prl3c1-null mice were associated with an expansion of the Leydig cell compartment. Prl3c1 locus is a template for two transcripts (Prl3c1-v1 and Prl3c1-v2) expressed in a tissue-specific pattern. Prl3c1-v1 is expressed in uterine decidua, while Prl3c1-v2 is expressed in Leydig cells of the testis. 5'RACE, chromatin immunoprecipitation and DNA methylation analyses were used to define cell-specific promoter usage and alternative transcript expression. We examined the Prl3c1 locus in five murid rodents and showed that the testicular transcript and encoded protein are the result of a recent retrotransposition event at the Mus musculus Prl3c1 locus. Prl3c1-v1 encodes PLP-J V1 and Prl3c1-v2 encodes PLP-J V2. Each protein exhibits distinct intracellular targeting and actions. PLP-J V2 possesses Leydig cell-static actions consistent with the Prl3c1-null testicular phenotype. Analysis of the biology of the Prl3c1 gene has provided insight into a previously unappreciated homeostatic setpoint control system programming testicular growth and function.
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Affiliation(s)
- Pengli Bu
- Institute for Reproductive Health and Regenerative MedicineUniversity of Kansas Medical Center, Kansas City, Kansas, USA
- Department of Pathology and Laboratory MedicineUniversity of Kansas Medical Center, Kansas City, Kansas, USA
| | - Shintaro Yagi
- Laboratory of Cellular BiochemistryVeterinary Medical Sciences/Animal Resource Sciences, The University of Tokyo, Tokyo, Japan
| | - Kunio Shiota
- Laboratory of Cellular BiochemistryVeterinary Medical Sciences/Animal Resource Sciences, The University of Tokyo, Tokyo, Japan
- Waseda Research Institute for Science and EngineeringWaseda University, Tokyo, Japan
| | - S M Khorshed Alam
- Institute for Reproductive Health and Regenerative MedicineUniversity of Kansas Medical Center, Kansas City, Kansas, USA
- Department of Pathology and Laboratory MedicineUniversity of Kansas Medical Center, Kansas City, Kansas, USA
| | - Jay L Vivian
- Institute for Reproductive Health and Regenerative MedicineUniversity of Kansas Medical Center, Kansas City, Kansas, USA
- Department of Pathology and Laboratory MedicineUniversity of Kansas Medical Center, Kansas City, Kansas, USA
| | - Michael W Wolfe
- Institute for Reproductive Health and Regenerative MedicineUniversity of Kansas Medical Center, Kansas City, Kansas, USA
- Department of Molecular and Integrative PhysiologyUniversity of Kansas Medical Center, Kansas City, Kansas, USA
| | - M A Karim Rumi
- Institute for Reproductive Health and Regenerative MedicineUniversity of Kansas Medical Center, Kansas City, Kansas, USA
- Department of Pathology and Laboratory MedicineUniversity of Kansas Medical Center, Kansas City, Kansas, USA
| | - Damayanti Chakraborty
- Institute for Reproductive Health and Regenerative MedicineUniversity of Kansas Medical Center, Kansas City, Kansas, USA
- Department of Pathology and Laboratory MedicineUniversity of Kansas Medical Center, Kansas City, Kansas, USA
| | - Kaiyu Kubota
- Institute for Reproductive Health and Regenerative MedicineUniversity of Kansas Medical Center, Kansas City, Kansas, USA
- Department of Pathology and Laboratory MedicineUniversity of Kansas Medical Center, Kansas City, Kansas, USA
| | - Pramod Dhakal
- Institute for Reproductive Health and Regenerative MedicineUniversity of Kansas Medical Center, Kansas City, Kansas, USA
- Department of Pathology and Laboratory MedicineUniversity of Kansas Medical Center, Kansas City, Kansas, USA
| | - Michael J Soares
- Institute for Reproductive Health and Regenerative MedicineUniversity of Kansas Medical Center, Kansas City, Kansas, USA
- Department of Pathology and Laboratory MedicineUniversity of Kansas Medical Center, Kansas City, Kansas, USA
- Department of PediatricsUniversity of Kansas Medical Center, Kansas City, Kansas, USA
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27
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Rajamanickam GD, Kroetsch T, Kastelic JP, Thundathil JC. Testis-specific isoform of Na/K-ATPase (ATP1A4) regulates sperm function and fertility in dairy bulls through potential mechanisms involving reactive oxygen species, calcium and actin polymerization. Andrology 2017; 5:814-823. [DOI: 10.1111/andr.12377] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Revised: 03/15/2017] [Accepted: 04/10/2017] [Indexed: 11/30/2022]
Affiliation(s)
- G. D. Rajamanickam
- Department of Production Animal Health; Faculty of Veterinary Medicine; University of Calgary; Calgary AB Canada
| | | | - J. P. Kastelic
- Department of Production Animal Health; Faculty of Veterinary Medicine; University of Calgary; Calgary AB Canada
| | - J. C. Thundathil
- Department of Production Animal Health; Faculty of Veterinary Medicine; University of Calgary; Calgary AB Canada
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28
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Liu C, Song Z, Wang L, Yu H, Liu W, Shang Y, Xu Z, Zhao H, Gao F, Wen J, Zhao L, Gui Y, Jiao J, Gao F, Li W. Sirt1 regulates acrosome biogenesis by modulating autophagic flux during spermiogenesis in mice. Development 2016; 144:441-451. [PMID: 28003215 DOI: 10.1242/dev.147074] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Accepted: 12/04/2016] [Indexed: 01/03/2023]
Abstract
Sirt1 is a member of the sirtuin family of proteins and has important roles in numerous biological processes. Sirt1-/- mice display an increased frequency of abnormal spermatozoa, but the mechanism of Sirt1 in spermiogenesis remains largely unknown. Here, we report that Sirt1 might be directly involved in spermiogenesis in germ cells but not in steroidogenic cells. Germ cell-specific Sirt1 knockout mice were almost completely infertile; the early mitotic and meiotic progression of germ cells in spermatogenesis were not obviously affected after Sirt1 depletion, but subsequent spermiogenesis was disrupted by a defect in acrosome biogenesis, which resulted in a phenotype similar to that observed in human globozoospermia. In addition, LC3 and Atg7 deacetylation was disrupted in spermatids after knocking out Sirt1, which affected the redistribution of LC3 from the nucleus to the cytoplasm and the activation of autophagy. Furthermore, Sirt1 depletion resulted in the failure of LC3 to be recruited to Golgi apparatus-derived vesicles and in the failure of GOPC and PICK1 to be recruited to nucleus-associated acrosomal vesicles. Taken together, these findings reveal that Sirt1 has a novel physiological function in acrosome biogenesis.
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Affiliation(s)
- Chao Liu
- State Key Laboratory of Stem cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, People's Republic of China
| | - Zhenhua Song
- State Key Laboratory of Stem cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, People's Republic of China.,University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.,Department of Pharmacology, Qingdao University School of Pharmacy, Qingdao 266021, People's Republic of China
| | - Lina Wang
- State Key Laboratory of Stem cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, People's Republic of China.,University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Haiyan Yu
- State Key Laboratory of Stem cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, People's Republic of China.,University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Weixiao Liu
- State Key Laboratory of Stem cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, People's Republic of China
| | - Yongliang Shang
- State Key Laboratory of Stem cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, People's Republic of China.,University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Zhiliang Xu
- State Key Laboratory of Stem cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, People's Republic of China.,University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Haichao Zhao
- State Key Laboratory of Stem cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, People's Republic of China.,University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Fengyi Gao
- State Key Laboratory of Stem cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, People's Republic of China
| | - Jiamin Wen
- State Key Laboratory of Stem cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, People's Republic of China.,University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Linan Zhao
- State Key Laboratory of Stem cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, People's Republic of China
| | - Yaoting Gui
- Guangdong Key Laboratory of Male Reproductive Medicine and Genetics, Peking University Shenzhen Hospital, Shenzhen 518035, People's Republic of China
| | - Jianwei Jiao
- State Key Laboratory of Stem cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, People's Republic of China
| | - Fei Gao
- State Key Laboratory of Stem cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, People's Republic of China
| | - Wei Li
- State Key Laboratory of Stem cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, People's Republic of China
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29
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Shang Y, Wang H, Jia P, Zhao H, Liu C, Liu W, Song Z, Xu Z, Yang L, Wang Y, Li W. Autophagy regulates spermatid differentiation via degradation of PDLIM1. Autophagy 2016; 12:1575-92. [PMID: 27310465 DOI: 10.1080/15548627.2016.1192750] [Citation(s) in RCA: 94] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Spermiogenesis is a complex and highly ordered spermatid differentiation process that requires reorganization of cellular structures. We have previously found that Atg7 is required for acrosome biogenesis. Here, we show that autophagy regulates the round and elongating spermatids. Specifically, we found that Atg7 is required for spermatozoa flagella biogenesis and cytoplasm removal during spermiogenesis. Spermatozoa motility of atg7-null mice dropped significantly with some extra-cytoplasm retained on the mature sperm head. These defects are associated with an impairment of the cytoskeleton organization. Functional screening revealed that the negative cytoskeleton organization regulator, PDLIM1 (PDZ and LIM domain 1 [elfin]), needs to be degraded by the autophagy-lysosome-dependent pathway to facilitate the proper organization of the cytoskeleton. Our results thus provide a novel mechanism showing that autophagy regulates cytoskeleton organization mainly via degradation of PDLIM1 to facilitate the differentiation of spermatids.
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Affiliation(s)
- Yongliang Shang
- a State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences , Beijing , China.,b University of Chinese Academy of Sciences , Beijing , China
| | - Hongna Wang
- a State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences , Beijing , China.,b University of Chinese Academy of Sciences , Beijing , China
| | - Pengfei Jia
- c State Key Laboratory of Molecular Developmental Biology and National Center for Plant Gene Research (Beijing), Institute of Genetics and Developmental Biology, Chinese Academy of Sciences , Beijing , China
| | - Haichao Zhao
- a State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences , Beijing , China.,b University of Chinese Academy of Sciences , Beijing , China
| | - Chao Liu
- a State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences , Beijing , China.,b University of Chinese Academy of Sciences , Beijing , China
| | - Weixiao Liu
- a State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences , Beijing , China
| | - Zhenhua Song
- a State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences , Beijing , China.,b University of Chinese Academy of Sciences , Beijing , China
| | - Zhiliang Xu
- a State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences , Beijing , China.,b University of Chinese Academy of Sciences , Beijing , China
| | - Lin Yang
- c State Key Laboratory of Molecular Developmental Biology and National Center for Plant Gene Research (Beijing), Institute of Genetics and Developmental Biology, Chinese Academy of Sciences , Beijing , China
| | - Yanfang Wang
- d State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences , Beijing , China
| | - Wei Li
- a State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences , Beijing , China
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30
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Liu C, Wang H, Shang Y, Liu W, Song Z, Zhao H, Wang L, Jia P, Gao F, Xu Z, Yang L, Gao F, Li W. Autophagy is required for ectoplasmic specialization assembly in sertoli cells. Autophagy 2016; 12:814-32. [PMID: 26986811 DOI: 10.1080/15548627.2016.1159377] [Citation(s) in RCA: 99] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
The ectoplasmic specialization (ES) is essential for Sertoli-germ cell communication to support all phases of germ cell development and maturity. Its formation and remodeling requires rapid reorganization of the cytoskeleton. However, the molecular mechanism underlying the regulation of ES assembly is still largely unknown. Here, we show that Sertoli cell-specific disruption of autophagy influenced male mouse fertility due to the resulting disorganized seminiferous tubules and spermatozoa with malformed heads. In autophagy-deficient mouse testes, cytoskeleton structures were disordered and ES assembly was disrupted. The disorganization of the cytoskeleton structures might be caused by the accumulation of a negative cytoskeleton organization regulator, PDLIM1, and these defects could be partially rescued by Pdlim1 knockdown in autophagy-deficient Sertoli cells. Altogether, our works reveal that the degradation of PDLIM1 by autophagy in Sertoli cells is important for the proper assembly of the ES, and these findings define a novel role for autophagy in Sertoli cell-germ cell communication.
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Affiliation(s)
- Chao Liu
- a State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences , Beijing , China.,b University of Chinese Academy of Sciences , Beijing , China
| | - Hongna Wang
- a State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences , Beijing , China.,b University of Chinese Academy of Sciences , Beijing , China
| | - Yongliang Shang
- a State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences , Beijing , China.,b University of Chinese Academy of Sciences , Beijing , China
| | - Weixiao Liu
- a State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences , Beijing , China
| | - Zhenhua Song
- a State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences , Beijing , China.,b University of Chinese Academy of Sciences , Beijing , China
| | - Haichao Zhao
- a State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences , Beijing , China.,b University of Chinese Academy of Sciences , Beijing , China
| | - Lina Wang
- a State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences , Beijing , China.,b University of Chinese Academy of Sciences , Beijing , China
| | - Pengfei Jia
- c State Key Laboratory of Molecular Developmental Biology and National Center for Plant Gene Research (Beijing), Institute of Genetics and Developmental Biology, Chinese Academy of Sciences , Beijing , China
| | - Fengyi Gao
- a State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences , Beijing , China
| | - Zhiliang Xu
- a State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences , Beijing , China.,b University of Chinese Academy of Sciences , Beijing , China
| | - Lin Yang
- c State Key Laboratory of Molecular Developmental Biology and National Center for Plant Gene Research (Beijing), Institute of Genetics and Developmental Biology, Chinese Academy of Sciences , Beijing , China
| | - Fei Gao
- a State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences , Beijing , China.,b University of Chinese Academy of Sciences , Beijing , China
| | - Wei Li
- a State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences , Beijing , China.,b University of Chinese Academy of Sciences , Beijing , China
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31
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Laird JG, Pan Y, Modestou M, Yamaguchi DM, Song H, Sokolov M, Baker SA. Identification of a VxP Targeting Signal in the Flagellar Na+ /K+ -ATPase. Traffic 2015; 16:1239-53. [PMID: 26373354 DOI: 10.1111/tra.12332] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Revised: 09/11/2015] [Accepted: 09/11/2015] [Indexed: 12/15/2022]
Abstract
Na(+) /K(+) -ATPase (NKA) participates in setting electrochemical gradients, cardiotonic steroid signaling and cellular adhesion. Distinct isoforms of NKA are found in different tissues and subcellular localization patterns. For example, NKA α1 is widely expressed, NKA α3 is enriched in neurons and NKA α4 is a testes-specific isoform found in sperm flagella. In some tissues, ankyrin, a key component of the membrane cytoskeleton, can regulate the trafficking of NKA. In the retina, NKA and ankyrin-B are expressed in multiple cell types and immunostaining for each is striking in the synaptic layers. Labeling for NKA is also prominent along the inner segment plasma membrane (ISPM) of photoreceptors. NKA co-immunoprecipitates with ankyrin-B, but on a subcellular level colocalization of these two proteins varies dependent on the cell type. We used transgenic Xenopus laevis tadpoles to evaluate the subcellular trafficking of NKA in photoreceptors. GFP-NKA α3 and α1 are localized to the ISPM, but α4 is localized to outer segments (OSs). We identified a VxP motif responsible for the OS targeting by using a series of chimeric and mutant NKA constructs. This motif is similar to previously identified ciliary targeting motifs. Given the structural similarities between OSs and flagella, our findings shed light on the subcellular targeting of this testes-specific NKA isoform.
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Affiliation(s)
- Joseph G Laird
- Department of Biochemistry, Carver College of Medicine, University of Iowa, Iowa City, IA, 52242, USA
| | - Yuan Pan
- Department of Biochemistry, Carver College of Medicine, University of Iowa, Iowa City, IA, 52242, USA.,Current address: Department of Neurology, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Modestos Modestou
- Department of Biochemistry, Carver College of Medicine, University of Iowa, Iowa City, IA, 52242, USA
| | - David M Yamaguchi
- Department of Biochemistry, Carver College of Medicine, University of Iowa, Iowa City, IA, 52242, USA
| | - Hongman Song
- Department of Ophthalmology, West Virginia University School of Medicine and West Virginia University Eye Institute, Morgantown, WV, 26506, USA.,Current address: Section for Translational Research in Retina & Macular Degeneration, National Institute on Deafness and Other Communication Disorders, NIH, Bethesda, MD, 20892, USA
| | - Maxim Sokolov
- Department of Ophthalmology, West Virginia University School of Medicine and West Virginia University Eye Institute, Morgantown, WV, 26506, USA
| | - Sheila A Baker
- Department of Biochemistry, Carver College of Medicine, University of Iowa, Iowa City, IA, 52242, USA
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32
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Zhou J, Chen L, Li J, Li H, Hong Z, Xie M, Chen S, Yao B. The Semen pH Affects Sperm Motility and Capacitation. PLoS One 2015; 10:e0132974. [PMID: 26173069 PMCID: PMC4501804 DOI: 10.1371/journal.pone.0132974] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Accepted: 06/20/2015] [Indexed: 11/18/2022] Open
Abstract
As the chemical environment of semen can have a profound effect on sperm quality, we examined the effect of pH on the motility, viability and capacitation of human sperm. The sperm in this study was collected from healthy males to avoid interference from other factors. The spermatozoa cultured in sperm nutrition solution at pH 5.2, 6.2, 7.2 and 8.2 were analyzed for sperm total motility, progressive motility (PR), hypo-osmotic swelling (HOS) rate, and sperm penetration. Our results showed that these parameters were similar in pH 7.2 and 8.2 sperm nutrition solutions, but decreased in pH 5.2 and 6.2 solutions. The HOS rate exhibited positive correlation with the sperm total motility and PR. In addition, the sperm Na(+)/K(+)-ATPase activity at different pHs was measured, and the enzyme activity was significantly lower in pH 5.2 and 6.2 media, comparing with that in pH 8.2 and pH 7.2 solutions. Using flow cytometry (FCM) and laser confocal scanning microscopy (LCSM) analysis, the intracellular Ca2(+ )concentrations of sperm cultured in sperm capacitation solution at pH 5.2, 6.2, 7.2 and 8.2 were determined. Compared with that at pH 7.2, the mean fluorescence intensity of sperm in pH 5.2 and 6.2 media decreased significantly, while that of pH 8.2 group showed no difference. Our results suggested that the declined Na(+)/K(+)-ATPase activity at acidic pHs result in decreased sperm movement and capacitation, which could be one of the mechanisms of male infertility.
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Affiliation(s)
- Ji Zhou
- Center for Reproductive Medicine, Jinling Hospital, Clinical School of Medical College, Nanjing University, Nanjing, People's Republic of China
| | - Li Chen
- Center for Reproductive Medicine, Jinling Hospital, Clinical School of Medical College, Nanjing University, Nanjing, People's Republic of China
| | - Jie Li
- Department of Neurosurgery, Jinling Hospital, Clinical School of Medical College, Nanjing University, Nanjing, People's Republic of China
| | - Hongjun Li
- Department of Urology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People's Republic of China
| | - Zhiwei Hong
- Center for Reproductive Medicine, Jinling Hospital, Clinical School of Medical College, Nanjing University, Nanjing, People's Republic of China
| | - Min Xie
- Center for Reproductive Medicine, Jinling Hospital, Clinical School of Medical College, Nanjing University, Nanjing, People's Republic of China
| | - Shengrong Chen
- Center for Reproductive Medicine, Jinling Hospital, Clinical School of Medical College, Nanjing University, Nanjing, People's Republic of China
| | - Bing Yao
- Center for Reproductive Medicine, Jinling Hospital, Clinical School of Medical College, Nanjing University, Nanjing, People's Republic of China
- * E-mail:
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33
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P2C-Type ATPases and Their Regulation. Mol Neurobiol 2015; 53:1343-1354. [DOI: 10.1007/s12035-014-9076-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2014] [Accepted: 12/29/2014] [Indexed: 12/12/2022]
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34
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McDermott J, Sánchez G, Nangia AK, Blanco G. Role of human Na,K-ATPase alpha 4 in sperm function, derived from studies in transgenic mice. Mol Reprod Dev 2015; 82:167-81. [PMID: 25640246 DOI: 10.1002/mrd.22454] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Accepted: 12/10/2014] [Indexed: 01/09/2023]
Abstract
Most of our knowledge on the biological role of the testis-specific Na,K-ATPase alpha 4 isoform derives from studies performed in non-human species. Here, we studied the function of human Na,K-ATPase alpha 4 after its expression in transgenic mice. Using a bacterial artificial chromosome (BAC) construct containing the human ATP1A4 gene locus, we obtained expression of the human α4 transgene specifically in mouse sperm testis and, in the sperm flagellum. The expressed human alpha 4 was active, and compared to wild-type sperm, those from transgenic mice displayed higher Na,K-ATPase alpha 4 activity and greater binding of fluorescently labeled ouabain, which is typical of the alpha 4 isoform. The expression and activity of endogenous alpha 4 and the other Na,K-ATPase alpha isoform present in sperm, alpha 1, remained unchanged. Male mice expressing the human ATP1A4 transgene exhibited similar testis size and morphology, normal sperm number and shape, and no changes in overall fertility compared to wild-type mice. Sperm carrying the human transgene exhibited enhanced total motility and an increase in multiple parameters of sperm movement, including higher sperm hyperactive motility. In contrast, no statistically significant changes in sperm membrane potential, protein tyrosine phosphorylation, or spontaneous acrosome reaction were found between wild-type and transgenic mice. Altogether, these results provide new genetic evidence for an important role of human Na,K-ATPase alpha 4 in sperm motility and hyperactivation, and establishes a new animal model for future studies of this isoform.
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Affiliation(s)
- Jeffrey McDermott
- Department of Molecular and Integrative Physiology, Department of Urology and Institute for Reproductive Health and Regenerative Medicine, University of Kansas Medical Center, Kansas City, Kansas
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Roder P, Hille C. ANG-2 for quantitative Na(+) determination in living cells by time-resolved fluorescence microscopy. Photochem Photobiol Sci 2014; 13:1699-710. [PMID: 25311309 DOI: 10.1039/c4pp00061g] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Sodium ions (Na(+)) play an important role in a plethora of cellular processes, which are complex and partly still unexplored. For the investigation of these processes and quantification of intracellular Na(+) concentrations ([Na(+)]i), two-photon coupled fluorescence lifetime imaging microscopy (2P-FLIM) was performed in the salivary glands of the cockroach Periplaneta americana. For this, the novel Na(+)-sensitive fluorescent dye Asante NaTRIUM Green-2 (ANG-2) was evaluated, both in vitro and in situ. In this context, absorption coefficients, fluorescence quantum yields and 2P action cross-sections were determined for the first time. ANG-2 was 2P-excitable over a broad spectral range and displayed fluorescence in the visible spectral range. Although the fluorescence decay behaviour of ANG-2 was triexponential in vitro, its analysis indicates a Na(+)-sensitivity appropriate for recordings in living cells. The Na(+)-sensitivity was reduced in situ, but the biexponential fluorescence decay behaviour could be successfully analysed in terms of quantitative [Na(+)]i recordings. Thus, physiological 2P-FLIM measurements revealed a dopamine-induced [Na(+)]i rise in cockroach salivary gland cells, which was dependent on a Na(+)-K(+)-2Cl(-) cotransporter (NKCC) activity. It was concluded that ANG-2 is a promising new sodium indicator applicable for diverse biological systems.
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Affiliation(s)
- Phillip Roder
- Physical Chemistry/Applied Laser Sensing in Complex Biosystems (ALS ComBi), Institute of Chemistry, University of Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Germany.
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Khundmiri SJ. Advances in understanding the role of cardiac glycosides in control of sodium transport in renal tubules. J Endocrinol 2014; 222:R11-24. [PMID: 24781255 DOI: 10.1530/joe-13-0613] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Cardiotonic steroids have been used for the past 200 years in the treatment of congestive heart failure. As specific inhibitors of membrane-bound Na(+)/K(+) ATPase, they enhance cardiac contractility through increasing myocardial cell calcium concentration in response to the resulting increase in intracellular Na concentration. The half-minimal concentrations of cardiotonic steroids required to inhibit Na(+)/K(+) ATPase range from nanomolar to micromolar concentrations. In contrast, the circulating levels of cardiotonic steroids under physiological conditions are in the low picomolar concentration range in healthy subjects, increasing to high picomolar levels under pathophysiological conditions including chronic kidney disease and heart failure. Little is known about the physiological function of low picomolar concentrations of cardiotonic steroids. Recent studies have indicated that physiological concentrations of cardiotonic steroids acutely stimulate the activity of Na(+)/K(+) ATPase and activate an intracellular signaling pathway that regulates a variety of intracellular functions including cell growth and hypertrophy. The effects of circulating cardiotonic steroids on renal salt handling and total body sodium homeostasis are unknown. This review will focus on the role of low picomolar concentrations of cardiotonic steroids in renal Na(+)/K(+) ATPase activity, cell signaling, and blood pressure regulation.
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Affiliation(s)
- Syed Jalal Khundmiri
- Division of Nephrology and HypertensionDepartment of MedicineDepartment of Physiology and BiophysicsUniversity of Louisville, 570 S. Preston Street, Louisville, Kentucky 40202, USADivision of Nephrology and HypertensionDepartment of MedicineDepartment of Physiology and BiophysicsUniversity of Louisville, 570 S. Preston Street, Louisville, Kentucky 40202, USA
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Relationship between ouabain and asthenozoospermia. ACTA ACUST UNITED AC 2014; 34:87-90. [PMID: 24496684 DOI: 10.1007/s11596-014-1236-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Revised: 12/24/2013] [Indexed: 10/25/2022]
Abstract
A growing number of researches have shown that ouabain can regulate mammalian sperm function and male reproduction by modulating the sperm motility, capacitation and acrosome reaction in vitro. This study further examined the relationship between ouabain and asthenozoospermia. In this study, the rat was intraperitoneally injected with ouabain at different concentrations (low-dose ouabain group: 12.5 μg/kg body weight per day, and high-dose ouabain group: 25 μg/kg body weight per day) for 30 days to establish the asthenozoospermia model. The sperms from 60 males with normal fertility were incubated with ouabain of gradient concentrations (10(-7)-10(-2) mol/L) for 4 h. The sperm motility was evaluated under a microscope. Moreover, the endogenous ouabain (EO) level was determined in seminal plasma of mild or severe asthenozoospermia patients and males with normal fertility by competitive inhibition ELISA. The results showed that the sperm motility was significantly diminished in the rats treated with different concentrations of ouabain. The number of motile sperms (grades a and b) was decreased greatly in a time- and dose-dependent manner in 10(-5)-10(-2) mol/L ouabain groups (P<0.01), while no obvious change in sperm motility was observed in 10(-7)-10(-6)mol/L groups even for 4-h incubation (P>0.05). Furthermore, the EO level was significantly increased in asthenozoospermia patients as compared with that in males with normal fertility (25.27±1.71 μg/L in mild asthenozoospermia patients, 26.52±1.82 μg/L in severe asthenozoospermia patients, 19.31±1.45 μg/L in normal fertility men) (P<0.01). In conclusion, rat asthenozoospermia was successfully established by intraperitoneal injection of ouabain, and 10(-5) mol/L ouabain was sufficient enough to inhibit sperm motility in vitro. Moreover, EO, a normal constituent of seminal plasma, was highly expressed in asthenozoospermia males as compared with normal fertility ones.
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Gutierres JM, Carvalho FB, Schetinger MRC, Marisco P, Agostinho P, Rodrigues M, Rubin MA, Schmatz R, da Silva CR, de P. Cognato G, Farias JG, Signor C, Morsch VM, Mazzanti CM, Bogo M, Bonan CD, Spanevello R. Anthocyanins restore behavioral and biochemical changes caused by streptozotocin-induced sporadic dementia of Alzheimer's type. Life Sci 2014; 96:7-17. [DOI: 10.1016/j.lfs.2013.11.014] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Revised: 10/26/2013] [Accepted: 11/14/2013] [Indexed: 12/20/2022]
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Lind U, Alm Rosenblad M, Wrange AL, Sundell KS, Jonsson PR, André C, Havenhand J, Blomberg A. Molecular characterization of the α-subunit of Na⁺/K⁺ ATPase from the euryhaline barnacle Balanus improvisus reveals multiple genes and differential expression of alternative splice variants. PLoS One 2013; 8:e77069. [PMID: 24130836 PMCID: PMC3793950 DOI: 10.1371/journal.pone.0077069] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2012] [Accepted: 09/06/2013] [Indexed: 01/28/2023] Open
Abstract
The euryhaline bay barnacle Balanus improvisus has one of the broadest salinity tolerances of any barnacle species. It is able to complete its life cycle in salinities close to freshwater (3 PSU) up to fully marine conditions (35 PSU) and is regarded as one of few truly brackish-water species. Na+/K+ ATPase (NAK) has been shown to be important for osmoregulation when marine organisms are challenged by changing salinities, and we therefore cloned and examined the expression of different NAKs from B. improvisus. We found two main gene variants, NAK1 and NAK2, which were approximately 70% identical at the protein level. The NAK1 mRNA existed in a long and short variant with the encoded proteins differing only by 27 N-terminal amino acids. This N-terminal stretch was coded for by a separate exon, and the two variants of NAK1 mRNAs appeared to be created by alternative splicing. We furthermore showed that the two NAK1 isoforms were differentially expressed in different life stages and in various tissues of adult barnacle, i.e the long isoform was predominant in cyprids and in adult cirri. In barnacle cyprid larvae that were exposed to a combination of different salinities and pCO2 levels, the expression of the long NAK1 mRNA increased relative to the short in low salinities. We suggest that the alternatively spliced long variant of the Nak1 protein might be of importance for osmoregulation in B. improvisus in low salinity conditions.
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Affiliation(s)
- Ulrika Lind
- Department of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg, Sweden
| | - Magnus Alm Rosenblad
- Department of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg, Sweden
| | - Anna-Lisa Wrange
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
| | - Kristina S. Sundell
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
| | - Per R. Jonsson
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
| | - Carl André
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
| | - Jonathan Havenhand
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
| | - Anders Blomberg
- Department of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg, Sweden
- * E-mail:
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Doğanli C, Oxvig C, Lykke-Hartmann K. Zebrafish as a novel model to assess Na+/K(+)-ATPase-related neurological disorders. Neurosci Biobehav Rev 2013; 37:2774-87. [PMID: 24091024 DOI: 10.1016/j.neubiorev.2013.09.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Revised: 08/08/2013] [Accepted: 09/23/2013] [Indexed: 11/26/2022]
Abstract
Modeling neurological disorders using zebrafish increases rapidly as this model system allows easy access to all developmental stages and imaging of pathological processes. A surprising degree of functional conservation has been demonstrated between human genes implicated in neurodegenerative diseases and their zebrafish orthologues. Zebrafish offers rapid high throughput screening of therapeutic compounds and live imaging of pathogenic mechanisms in vivo. Several recent zebrafish studies functionally assessed the role of the sodium-potassium pump (Na(+)/K(+)-ATPase). The Na(+)/K(+)-ATPase maintains the electrochemical gradients across the plasma membrane, essential for e.g. signaling, secondary active transport, glutamate re-uptake and neuron excitability in animal cells. Na(+)/K(+)-ATPase mutations are associated with neurological disorders, where mutations in the Na(+)/K(+)-ATPase α2 and α3 isoforms cause Familial hemiplegic migraine type 2 (FHM2) and Rapid-onset dystonia-parkinsonism (RDP)/Alternating hemiplegic childhood (AHC), respectively. In zebrafish, knock-down of Na(+)/K(+)-ATPase isoforms included skeletal and heart muscle defects, impaired embryonic motility, depolarized Rohon-beard neurons and abrupt brain ventricle development. In this review, we discuss zebrafish as a model to assess Na(+)/K(+)-ATPase isoform functions. Furthermore, studies investigating proteomic changes in both α2- and α3-isoform deficient embryos and their potential connections to the Na(+)/K(+)-ATPase functions will be discussed.
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Affiliation(s)
- Canan Doğanli
- Centre for Membrane Pumps in Cells and Disease-PUMPKIN, Danish National Research Foundation, Copenhagen, Denmark; Aarhus University, Department of Biomedicine, Ole Worms Allé 3, Building 1171, DK-8000 Aarhus, Denmark; Aarhus University, Department of Molecular Biology and Genetics, Gustav Wieds Vej 10, Building 3135, DK-8000 Aarhus, Denmark
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Agbor VA, Tao S, Lei N, Heckert LL. A Wt1-Dmrt1 transgene restores DMRT1 to sertoli cells of Dmrt1(-/-) testes: a novel model of DMRT1-deficient germ cells. Biol Reprod 2013; 88:51. [PMID: 23255335 DOI: 10.1095/biolreprod.112.103135] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
DMRT1 is an evolutionarily conserved transcriptional factor expressed only in the postnatal testis, where it is produced in Sertoli cells and germ cells. While deletion of Dmrt1 in mice demonstrated it is required for postnatal testis development and fertility, much is still unknown about its temporal- and cell-specific functions. This study characterized a novel mouse model of DMRT1-deficient germ cells that was generated by breeding Dmrt1-null (Dmrt1(-/-)) mice with Wt1-Dmrt1 transgenic (Dmrt1(+/-;tg)) mice, which express a rat Dmrt1 cDNA in gonadal supporting cells by directing it from the Wilms tumor 1 locus in a yeast artificial chromosome transgene. Like Dmrt1(-/-) mice, male Dmrt1(-/-) transgenic mice (Dmrt1(-/-;tg)) were infertile, while female mice were fertile. Immunohistochemistry and Western blot analysis showed transgenic DMRT1 expressed in supporting cells of the newborn gonads of both sex and in Sertoli cells of the testis afterbirth. Sertoli cells were evaluated by electron microscopy, revealing that maturation of Dmrt1(-/-;tg) Sertoli cells was incomplete. Morphological analysis of testes from 42-day-old mice showed that, compared to Dmrt1(-/-) mice, Dmrt1(-/-;tg) mice have improved seminiferous tubule structure, with lumens present in many. Immunohistochemistry of the polarity markers ESPIN and NECTIN-2 showed that DMRT1 in Sertoli cells is required for NECTIN-2 expression and influences organization of ectoplasmic specializations. Further functional analyses of the transgene on a Dmrt1(-/-) background showed that it did not rescue the decrease in Dmrt1(-/-) testis size, but when expressed on a wild-type background, exogenous DMRT1 prevented the normal age-related decline in testis size and enhanced sperm progressive motility. The studies suggest that DMRT1 in Sertoli cells regulates tubule morphology, spermatogenesis, and sperm function via its effects on Sertoli cell maturation and polarity. Furthermore, expression and function of transgenic DMRT1 in Sertoli cells establishes a novel mouse model of DMRT1-deficient germ cells generated by breeding Dmrt1-null mice with Wt1-Dmrt1 transgenic mice (rescue; Dmrt1(-/-;tg)).
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Affiliation(s)
- Valentine A Agbor
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, KS 66160, USA
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Green fluorescence protein driven by the Na,K-ATPase α4 isoform promoter is expressed only in male germ cells of mouse testis. J Assist Reprod Genet 2012; 29:1313-25. [PMID: 23229519 DOI: 10.1007/s10815-012-9876-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2012] [Accepted: 10/02/2012] [Indexed: 10/27/2022] Open
Abstract
PURPOSE Expression of the Na,K-ATPase α4 isoform is required for sperm motility and fertility and is controlled by the Atp1a4 promoter. Here, we have investigated the specific tissue, cell type and developmental regulation of expression mediated by the Atp1a4 promoter. METHODS We have inserted the green fluorescent protein (GFP), downstream of the endogenous Atp1a4 promoter, in place of the Na,K-ATPase α4 gene, and used it as a marker for α4 expression in mice (Atp1a4 ( null(GFP) ) mice). RESULTS Replacement of α4 by GFP completely disrupted α4 expression and activity, produced sperm morphological and functional abnormalities, and caused infertility of Atp1a4 ( null(GFP) ) male mice. Immunoblot analysis of Atp1a4 ( null(GFP) ) mouse tissues showed GFP expression in testis. This particular expression pattern was found in adult, but not in mouse embryos or in 7, 18 day old mice. In agreement with expression of GFP, adult Atp1a4 ( null(GFP) ) mouse testis displayed the typical fluorescence of GFP. Immunocytochemistry of testis identified GFP in more differentiated male germ cells, but not in spermatogonia, Leydig or Sertoli cells. Further analysis, using immunoblot of fluorescently sorted testis cells with cell specific markers, detected GFP only in spermatocytes, spermatids and spermatozoa. While epididymis showed GFP expression, this was confined to the spermatozoa within the epididymal tubules. CONCLUSIONS Our results show that the Atp1a4 promoter drives GFP expression exclusively in male germ cells of the testis, where it restricts it to post-meiotic stages of spermatogenesis. These findings highlight the exquisite spatial and temporal control of expression exerted by the Atp1a4 promoter on Na,K-ATPase α4, which is particularly well suited to fulfill the special functions of spermatozoa.
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Thundathil JC, Rajamanickam GD, Kastelic JP, Newton LD. The Effects of Increased Testicular Temperature on Testis-Specific Isoform of Na+/K+-ATPase in Sperm and its Role in Spermatogenesis and Sperm Function. Reprod Domest Anim 2012; 47 Suppl 4:170-7. [DOI: 10.1111/j.1439-0531.2012.02072.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Xu M, Xia M, Li XX, Han WQ, Boini KM, Zhang F, Zhang Y, Ritter JK, Li PL. Requirement of translocated lysosomal V1 H(+)-ATPase for activation of membrane acid sphingomyelinase and raft clustering in coronary endothelial cells. Mol Biol Cell 2012; 23:1546-57. [PMID: 22357614 PMCID: PMC3327313 DOI: 10.1091/mbc.e11-09-0821] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
The activation of translocated lysosomal H+-ATPase is attributed to FasL-induced formation and maintenance of an acid microenvironment around the endothelial cell membrane, which facilitates the activation of ASM and production of ceramide, thereby leading to MR clustering and redox signaling platform formation. Acid sphingomyelinase (ASM) mediates the formation of membrane raft (MR) redox signalosomes in a process that depends on a local acid microenvironment in coronary arterial endothelial cells (CAECs). However, it is not known how this local acid microenvironment is formed and maintained. The present study hypothesized that lysosomal V1 H+-ATPase provides a hospitable acid microenvironment for activation of ASM when lysosomes traffic and fuse into the cell membrane. Confocal microscopy showed that local pH change significantly affected MRs, with more fluorescent patches under low pH. Correspondingly, the ASM product, ceramide, increased locally in the cell membrane. Electron spin resonance assay showed that local pH increase significantly inhibited NADPH oxidase–mediated production of O2−. in CAECs. Direct confocal microscopy demonstrated that Fas ligand resulted in localized areas of decreased pH around CAEC membranes. The inhibitors of both lysosomal fusion and H+-ATPase apparently attenuated FasL-caused pH decrease. V1 H+-ATPase accumulation and activity on cell membranes were substantially suppressed by the inhibitors of lysosomal fusion or H+-ATPase. These results provide the first direct evidence that translocated lysosomal V1 H+-ATPase critically contributes to the formation of local acid microenvironment to facilitate activation of ASM and consequent MR aggregation, forming MR redox signalosomes and mediating redox signaling in CAECs.
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Affiliation(s)
- Ming Xu
- Department of Pharmacology and Toxicology, Medical College of Virginia, Virginia Commonwealth University, Richmond, VA 23298, USA
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Abstract
The sole purpose of a sperm cell is to carry genetic information from a male to a female egg. In order to accomplish this quest, the sperm cell must travel a long distance through a constantly changing environment. The success of this journey depends on membrane proteins that are uniquely expressed in sperm cells. One of these proteins is the α4 isoform of the sodium pump. This pump is optimized to cope with the ionic environment characteristic of the female reproductive tract, and its activity may be tightly coupled with secondary transporters that maintain cytoplasmic pH. Pharmacological inhibition of α4 is sufficient to inhibit sperm motility, and significant differences around the inhibitor-binding site compared with the ubiquitous α1 isoform, make α4 a feasible target in rational drug development.
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Expression of dysadherin in the human male reproductive tract and in spermatozoa. Fertil Steril 2011; 96:554-561.e2. [PMID: 21774927 DOI: 10.1016/j.fertnstert.2011.06.053] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2011] [Revised: 06/20/2011] [Accepted: 06/20/2011] [Indexed: 11/21/2022]
Abstract
OBJECTIVE To study expression of dysadherin in human testis, epididymis, and spermatozoa. DESIGN Prospective study. SETTING Basic research laboratory. PATIENT(S) Testis, epididymis, and testicular spermatozoa from patients under treatment and semen from volunteer donors. INTERVENTION(S) Reverse transcription-polymerase chain reaction, immunohistochemistry, immunocytochemistry, and Western immunoblotting. MAIN OUTCOME MEASURE(S) Dysadherin messenger RNA (mRNA) analysis in testis, epididymis, and ejaculated spermatozoa, immunohistochemistry of both tissues, Western immunoblotting of tissue/cell extracts, and immunocytochemistry of spermatozoa. RESULT(S) Dysadherin mRNA was found in testis, epididymis, and ejaculated spermatozoa. Whereas testis and spermatozoa exhibited a distinctive 91-kDa protein form, the epididymis showed a 50-kDa moiety, also found in MDA-MB-231 breast cancer cells. Nucleotide sequence analysis revealed >99% homology between testicular and somatic cell mRNA, suggesting differential protein glycosylation. Dysadherin was immunodetected in round spermatids and testicular/ejaculated spermatozoa. It localizes to the acrosomal region and flagellum and colocalized with E-cadherin in the head and with the Na(+),K(+)-ATPase α4 subunit in the flagellum. CONCLUSION(S) This is the first report on expression of dysadherin in the male gonad and in spermatozoa. Its colocalization with E-cadherin and Na(+),K(+)-ATPase leads us to postulate a role for dysadherin as a modulator of sperm function.
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Na,K-ATPase alpha4 isoform is essential for sperm fertility. Proc Natl Acad Sci U S A 2010; 108:644-9. [PMID: 21187400 DOI: 10.1073/pnas.1016902108] [Citation(s) in RCA: 103] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Regulation of ion balance in spermatozoa has been shown to be essential for sperm motility and fertility. Control of intracellular ion levels requires the function of distinct ion-transport mechanisms at the cell plasma membrane. Active Na(+) and K(+) exchange in sperm is under the control of the Na,K-ATPase. Two molecular variants of the catalytic subunit of the Na,K-ATPase, α1 and α4, coexist in sperm. These isoforms exhibit different biochemical properties; however, their function in sperm fertility is unknown. In this work, we show that Na,K-ATPase α4 is essential for sperm fertility. Knockout male mice lacking α4 are completely sterile and spermatozoa from these mice are unable of fertilizing eggs in vitro. Furthermore, α4 deletion results in severe reduction in sperm motility and hyperactivation typical of sperm capacitation. In addition, absence of α4 causes a characteristic bend in the sperm flagellum, indicative of abnormal sperm ion regulation. Accordingly, α4-null sperm present increased intracellular Na(+) and cell plasma membrane depolarization. These results are unique in demonstrating the absolute requirement of α4 for sperm fertility. Moreover, the inability of α1 to compensate for α4 suggests that α4 is the Na,K-ATPase-α isoform directly involved in sperm fertility. Our findings show α4 as an attractive target for male contraception and open the possibility for the potential use of this Na,K-ATPase isoform as a biomarker for male fertility.
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Jimenez T, Sanchez G, McDermott JP, Nguyen AN, Kumar TR, Blanco G. Increased expression of the Na,K-ATPase alpha4 isoform enhances sperm motility in transgenic mice. Biol Reprod 2010; 84:153-61. [PMID: 20826726 DOI: 10.1095/biolreprod.110.087064] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
The Na,K-ATPase alpha4 (ATP1A4) isoform is specifically expressed in male germ cells and is highly prevalent in spermatozoa. Although selective inhibition of alpha4 activity with ouabain has been shown to affect sperm motility, a more direct analysis of the role of this isoform in sperm movement has not yet been demonstrated. To establish this, we engineered transgenic mice that express the rat alpha4 isoform fused to green fluorescent protein in male germ cells, under the control of the mouse protamine 1 promoter. We showed that the rat Atp1a4 transgene is expressed in mouse spermatozoa and that it is localized to the sperm flagellum. In agreement with increased expression of the alpha4 isoform, sperm from transgenic mice displayed higher alpha4-specific Na,K-ATPase activity and binding of fluorescently labeled ouabain than wild-type mice. In contrast, expression and activity of ATP1A1 (alpha1), the other Na,K-ATPase alpha isoform present in sperm, remained unchanged. Similar to wild-type mice, mice expressing the alpha4 transgene exhibited normal testis and sperm morphology and no differences in fertility. However, compared to wild-type mice, sperm from transgenic mice displayed plasma membrane hyperpolarization and higher total and progressive motility. Other parameters of motility also increased, including straight-line, curvilinear, and average path velocities and amplitude of lateral head displacement. In addition, sperm from the transgenic mice showed enhanced sperm hyperactive motility, but no changes in progesterone-induced acrosome reaction. Altogether, these results provide new genetic evidence for the role of the ATP1A4 isoform in sperm motility, under both noncapacitating and capacitating conditions.
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Affiliation(s)
- Tamara Jimenez
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, Kansas, USA
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