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Olfati A, Tvrda E. Riboflavin recovery of spermatogenic dysfunction via a dual inhibition of oxidative changes and regulation of the PINK1-mediated pathway in arsenic-injured rat model. Physiol Res 2021; 70:591-603. [PMID: 34062077 PMCID: PMC8820542 DOI: 10.33549/physiolres.934658] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Accepted: 05/06/2021] [Indexed: 01/01/2023] Open
Abstract
Arsenic trioxide (As2O3) poisoning and associated potential lesions are of a global concern. Inversely, riboflavin (vitamin B2, VB2) as a component of flavoproteins could play a vital role in the spermatogenic enzymatic reactions. Thus, this research aimed to explore potential beneficial roles of VB2 during As2O3-injured-toxicity. Rats were randomly allocated into 4 groups (n=8/group) and challenged as follows (for 30 days continuously): Group 1 received normal saline; Group 2 was treated with 3 mg As2O3/L; Group 3 received 40 mg VB2/L; Group 4 received 3 mg As2O3/L + 40 mg VB2/L. Both As2O3 and VB2 were dissolved in deionized water. Malondialdehyde (MDA), Glutathione Peroxidase (GSH-Px), Superoxide dismutase (SOD), and Catalase (CAT) were assessed for the oxidative profile, while TAS (Total Antioxidative Status) levels were evaluated for the antioxidant system, in both serum and testicular tissue. P<0.05 was considered statistically significant. The results show that As2O3 significantly decreased the body weight, testicular weight and testis volume, semen quality and testicular cell count (p<0.05). Furthermore, MDA content in the testicular tissue of the As2O3 group rats was significantly higher in comparison to the vehicle group (p<0.05). Likewise, TAS and the activities of GSH-Px, CAT and SOD were reduced (p<0.05) when compared to the control. As(2)O(3) induced testicular damage and seminiferous tubular atrophy. Monodansylcadaverine assays mirrored the histopathology observations. Meanwhile, As2O3 upregulated the expression of mitophagy-related genes including PINK1, Parkin, USP8, LC3-I, Fis1 and Mfn2. The p38 gene, responsible to stress stimuli, was also upregulated by As2O3 administration. Meanwhile, exposure to VB2 led to a significant decrease of the expression levels of mitophagy related genes. Our study revealed that VB2 supplementation protected testicular structures against As2O3-induced injury via a dual inhibition of oxidative changes and a regulation of the PINK1-mediated pathway.
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Affiliation(s)
- A Olfati
- Young Researchers and Elites Club, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran.
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2
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Dzyuba V, Ninhaus-Silveira A, Veríssimo-Silveira R, Rodina M, Dzyuba B. Sperm antioxidant system in ocellate river stingray Potamotrygon motoro at transition from seminal vesicle to cloaca. Fish Physiol Biochem 2020; 46:1975-1980. [PMID: 32676985 DOI: 10.1007/s10695-020-00848-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 07/07/2020] [Indexed: 06/11/2023]
Abstract
The importance of reactive oxygen species and the antioxidant system in sperm biology has been recognized for different bony fishes but nothing is known in this regard for chondrichthyans. For the first time for cartilaginous fishes, the enzymatic antioxidant system was shown herein to be present in both fractions of sperm (spermatozoa and seminal fluid) collected from two different places (seminal vesicle and cloaca). In internally fertilizing freshwater ocellate river stingray, Potamotrygon motoro, the activity of superoxide dismutase and glutathione peroxidase was not changed upon sperm transition from the seminal vesicle to the cloaca. The activity of catalase was significantly increased for both sperm fractions at transition from the seminal vesicle to the cloaca (1.6 times for spermatozoa and 1.9 times for seminal fluid). The role of the sperm antioxidant system for different aspects of internal fertilization is discussed. The presented results are the initiatory step in uncovering the biochemical events of internal reproduction in Chondrichthyes.
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Affiliation(s)
- Viktoriya Dzyuba
- Research Institute of Fish Culture and Hydrobiology, Faculty of Fisheries and Protection of Waters, University of South Bohemia in České Budějovice, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Zátiší 728/II, 389 25, Vodňany, Czech Republic.
| | - Alexandre Ninhaus-Silveira
- Neotropical Ichthyology Laboratory (LINEO), Department of Biology and Zootechny, Ilha Solteira School of Engineering, São Paulo State University, Monção Street, 226, Ilha Solteira, SP, 15385-000, Brazil
| | - Rosicleire Veríssimo-Silveira
- Neotropical Ichthyology Laboratory (LINEO), Department of Biology and Zootechny, Ilha Solteira School of Engineering, São Paulo State University, Monção Street, 226, Ilha Solteira, SP, 15385-000, Brazil
| | - Marek Rodina
- Research Institute of Fish Culture and Hydrobiology, Faculty of Fisheries and Protection of Waters, University of South Bohemia in České Budějovice, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Zátiší 728/II, 389 25, Vodňany, Czech Republic
| | - Borys Dzyuba
- Research Institute of Fish Culture and Hydrobiology, Faculty of Fisheries and Protection of Waters, University of South Bohemia in České Budějovice, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Zátiší 728/II, 389 25, Vodňany, Czech Republic
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Keshtgar S, Ebrahimi B, Shid-Moosavi SM, Erfani N. NADPH oxidase 5 activation; a novel approach to human sperm cryoinjury. Cell Tissue Bank 2020; 21:675-684. [PMID: 32607683 DOI: 10.1007/s10561-020-09845-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Accepted: 06/23/2020] [Indexed: 12/19/2022]
Abstract
Sperm cryopreservation leads to various structural and functional damages, some of which induce by oxidative stress. The reactive oxygen species (ROS) generates by mitochondria and membrane NADPH oxidases (NOXs). Among the NOXs, only NOX5 has been identified in the cell membrane of human sperm. This study was designed to clarify the possible role of NOX5 on sperm cryoinjury. Forty human semen samples were washed and randomly divided into fresh and cryopreserved groups. Each group was divided into 4 subgroups containing Ham's F10 (control), 0.1% DMSO (vehicle), 100 nM of PMA (phorbol 12-myristate 13-acetate) and 1 µM of DPI (diphenyleneiodonium), as NOX5 activator and inhibitor. The samples of cryopreserved groups were preserved in liquid nitrogen for 1 month. The sperm kinematics, membrane integrity, ROS production, apoptosis rate, mitochondrial membrane potential (MMP), intracellular ATP and calcium concentration [Ca2+]i were evaluated. The percent of sperm with intact membrane and motile sperm reduced significantly after thawing (p ≤ 0.01). The ROS production (p ≤ 0.01) and the apoptotic rate increased, MMP dissipated, and the percentage of live cells with high [Ca2+]i decreased significantly in the cryopreserved control group relative to the fresh control group. DPI, in contrast to PMA, improved sperm progressive motility (p ≤ 0.01), membrane integrity in fresh and cryopreserved groups and reduced the ROS amount in cryopreserved group (p ≤ 0.01). Apoptotic rate, [Ca2+]i, ATP, and MMP did not change with DPI and PMA in cryopreserved groups. We conclude that NOX5 activity in fresh sperm is low, and it increases during cryopreservation. NOX5 inhibition improves the cryopreserved sperm quality.
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Affiliation(s)
- Sara Keshtgar
- Department of Physiology, School of Medicine, Shiraz University of Medical Sciences, Zand Blvd, 71348-45794, Shiraz, Iran
| | - Bahareh Ebrahimi
- Department of Physiology, School of Medicine, Shiraz University of Medical Sciences, Zand Blvd, 71348-45794, Shiraz, Iran.
| | - Seyed Mostafa Shid-Moosavi
- Department of Physiology, School of Medicine, Shiraz University of Medical Sciences, Zand Blvd, 71348-45794, Shiraz, Iran
| | - Nasrollah Erfani
- Department of Immunology and Institute for Cancer Research, School of Medicine, Shiraz University of Medical Sciences, 71345-1798, Shiraz, Iran
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Kadlec M, Ros-Santaella JL, Pintus E. The Roles of NO and H 2S in Sperm Biology: Recent Advances and New Perspectives. Int J Mol Sci 2020; 21:E2174. [PMID: 32245265 PMCID: PMC7139502 DOI: 10.3390/ijms21062174] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 03/10/2020] [Accepted: 03/18/2020] [Indexed: 01/24/2023] Open
Abstract
After being historically considered as noxious agents, nitric oxide (NO) and hydrogen sulfide (H2S) are now listed as gasotransmitters, gaseous molecules that play a key role in a variety of cellular functions. Both NO and H2S are endogenously produced, enzymatically or non-enzymatically, and interact with each other in a range of cells and tissues. In spite of the great advances achieved in recent decades in other biological systems, knowledge about H2S function and interactions with NO in sperm biology is in its infancy. Here, we aim to provide an update on the importance of these molecules in the physiology of the male gamete. Special emphasis is given to the most recent advances in the metabolism, mechanisms of action, and effects (both physiological and pathophysiological) of these gasotransmitters. This manuscript also illustrates the physiological implications of NO and H2S observed in other cell types, which might be important for sperm function. The relevance of these gasotransmitters to several signaling pathways within sperm cells highlights their potential use for the improvement and successful application of assisted reproductive technologies.
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Affiliation(s)
| | | | - Eliana Pintus
- Department of Veterinary Sciences, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamýcká 129, 165 00 Praha 6-Suchdol, Czech Republic; (M.K.); (J.L.R.-S.)
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Miguel-Jiménez S, Carvajal-Serna M, Calvo S, Casao A, Cebrián-Pérez JÁ, Muiño-Blanco T, Pérez-Pe R. Does Melatonin Exert Its Effect on Ram Sperm Capacitation Through Nitric Oxide Synthase Regulation? Int J Mol Sci 2020; 21:ijms21062093. [PMID: 32197481 PMCID: PMC7139474 DOI: 10.3390/ijms21062093] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 03/09/2020] [Accepted: 03/16/2020] [Indexed: 01/02/2023] Open
Abstract
Nitric oxide (NO·), synthesized from L-arginine by nitric oxide synthase (NOS), is involved in sperm functionality. NOS isoforms have been detected in spermatozoa from different species, and an increment in NOS activity during capacitation has been reported. This work aims to determine the presence and localization of NOS isoforms in ram spermatozoa and analyse their possible changes during in vitro capacitation. Likewise, we investigated the effect of melatonin on the expression and localization of NOS and NO· levels in capacitated ram spermatozoa. Western blot analysis revealed protein bands associated with neuronal NOS (nNOS) and epithelial NOS (eNOS) but not with inducible NOS (iNOS). However, the three isoforms were detected by indirect immunofluorescence (IFI), and their immunotypes varied over in vitro capacitation with cAMP-elevating agents. NO· levels (evaluated by DAF-2-DA/PI staining) increased after in vitro capacitation, and the presence of L-arginine in the capacitating medium raised NO· production and enhanced the acrosome reaction. Incubation in capacitating conditions with a high-cAMP medium with melatonin modified the NOS distribution evaluated by IFI, but no differences in Western blotting were observed. Melatonin did not alter NO· levels in capacitating conditions, so we could infer that its role in ram sperm capacitation would not be mediated through NO· metabolism.
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Zheng Q, Xiao H, Shi H, Wang T, Sun L, Tao W, Kocher TD, Li M, Wang D. Loss of Cyp11c1 causes delayed spermatogenesis due to the absence of 11-ketotestosterone. J Endocrinol 2020; 244:487-499. [PMID: 31910154 DOI: 10.1530/joe-19-0438] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Accepted: 01/07/2020] [Indexed: 11/08/2022]
Abstract
The impacts of androgens and glucocorticoids on spermatogenesis have intrigued scientists for decades. 11β-hydroxylase, encoded by cyp11c1, is the key enzyme involved in the synthesis of 11-ketotestosterone and cortisol, the major androgen and glucocorticoid in fish, respectively. In the present study, a Cyp11c1 antibody was produced. Western blot and immunohistochemistry showed that Cyp11c1 was predominantly expressed in the testicular Leydig cells and head kidney interrenal cells. A mutant line of cyp11c1 was established by CRISPR/Cas9. Homozygous mutation of cyp11c1 caused a sharp decrease of serum cortisol and 11-ketotestosterone, and a delay in spermatogenesis which could be rescued by exogenous 11-ketotestosterone or testosterone, but not cortisol treatment. Intriguingly, this spermatogenesis restored spontaneously, indicating compensatory effects of other androgenic steroids. In addition, loss of Cyp11c1 led to undersized testes with a smaller efferent duct and disordered spermatogenic cysts in adult males. However, a small amount of viable sperm was produced. Taken together, our results demonstrate that cyp11c1 is important for testicular development, especially for the initiation and proper progression of spermatogenesis. 11-ketotestosterone is the most efficient androgen in tilapia.
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Affiliation(s)
- Qiaoyuan Zheng
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, School of Life Sciences, Southwest University, Chongqing, China
| | - Hesheng Xiao
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, School of Life Sciences, Southwest University, Chongqing, China
| | - Hongjuan Shi
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, School of Life Sciences, Southwest University, Chongqing, China
| | - Tingru Wang
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, School of Life Sciences, Southwest University, Chongqing, China
| | - Lina Sun
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, School of Life Sciences, Southwest University, Chongqing, China
| | - Wenjing Tao
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, School of Life Sciences, Southwest University, Chongqing, China
| | - Thomas D Kocher
- Department of Biology, University of Maryland, College Park, Maryland, USA
| | - Minghui Li
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, School of Life Sciences, Southwest University, Chongqing, China
| | - Deshou Wang
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, School of Life Sciences, Southwest University, Chongqing, China
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Li N, Oakes JA, Storbeck KH, Cunliffe VT, Krone NP. The P450 side-chain cleavage enzyme Cyp11a2 facilitates steroidogenesis in zebrafish. J Endocrinol 2020; 244:309-321. [PMID: 31693487 DOI: 10.1530/joe-19-0384] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Accepted: 11/05/2019] [Indexed: 11/08/2022]
Abstract
Cytochrome P450 side-chain cleavage enzyme, encoded by the CYP11A1 gene, catalyzes the first and rate-limiting step of steroid hormone biosynthesis. Previous morpholino-knockdown studies in zebrafish suggested cyp11a2 is a functional equivalent of human CYP11A1 and is essential for interrenal steroidogenesis in zebrafish larvae. The role of Cyp11a2 in adult zebrafish, particularly in gonadal steroidogenesis, remains elusive. To explore the role of Cyp11a2 in adults, we developed zebrafish mutant lines by creating deletions in cyp11a2 using the CRISPR/Cas9 genomic engineering approach. Homozygous cyp11a2 mutant zebrafish larvae showed an upregulation of the hypothalamic-pituitary-interrenal axis. Furthermore, these Cyp11a2-deficient zebrafish demonstrated profound glucocorticoid and androgen deficiencies. Cyp11a2 homozygotes only developed into males with feminized secondary sex characteristics. Adult cyp11a2 -/- mutant fish showed a lack of natural breeding behaviors. Histological characterization revealed disorganized testicular structure and significantly decreased numbers of mature spermatozoa. These findings are further supported by the downregulation of the expression of several pro-male genes in the testes of cyp11a2 homozygous zebrafish, including sox9a, dmrt1 and amh. Moreover, the spermatogonia markers nanos2 and piwil1 were upregulated, while the spermatocytes marker sycp3 and spermatids marker odf3b were downregulated in the testes of cyp11a2 homozygous mutants. Our expression analysis is consistent with our histological studies, suggesting that spermatogonia are the predominant cell types in the testes of cyp11a2 homozygous mutants. Our work thus demonstrates the crucial role of Cyp11a2 in interrenal and gonadal steroidogenesis in zebrafish larvae and adults.
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Affiliation(s)
- Nan Li
- Department of Oncology & Metabolism, School of Medicine, University of Sheffield, Sheffield, UK
- The Bateson Centre, Firth Court, Western Bank, Sheffield, UK
| | - James A Oakes
- Department of Oncology & Metabolism, School of Medicine, University of Sheffield, Sheffield, UK
- The Bateson Centre, Firth Court, Western Bank, Sheffield, UK
| | - Karl-Heinz Storbeck
- Department of Biochemistry, Stellenbosch University, Stellenbosch, Matieland, South Africa
| | - Vincent T Cunliffe
- The Bateson Centre, Firth Court, Western Bank, Sheffield, UK
- Department of Biomedical Science, Firth Court, Western Bank, Sheffield, UK
| | - Nils P Krone
- Department of Oncology & Metabolism, School of Medicine, University of Sheffield, Sheffield, UK
- The Bateson Centre, Firth Court, Western Bank, Sheffield, UK
- Department of Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
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Kelsey KM, Zigo M, Thompson WE, Kerns K, Manandhar G, Sutovsky M, Sutovsky P. Reciprocal surface expression of arylsulfatase A and ubiquitin in normal and defective mammalian spermatozoa. Cell Tissue Res 2020; 379:561-576. [PMID: 31897834 DOI: 10.1007/s00441-019-03144-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Accepted: 11/14/2019] [Indexed: 01/03/2023]
Abstract
Defective mammalian spermatozoa are marked on their surface by proteolytic chaperone ubiquitin. To identify potential ubiquitinated substrates in the defective spermatozoa, we resolved bull sperm protein extracts on a two-dimensional gel and isolated a 64-65-kDa spot (p64) corresponding to one of the major ubiquitin-immunoreactive bands observed in the one-dimensional Western blots. Immune serum raised against this protein recognized a prominent, possibly glycosylated band/spot in the range of 55-68 kDa, consistent with the original spot used for immunization. Internal sequences obtained by Edman degradation of this spot matched the sequence of arylsulfatase A (ARSA), the sperm acrosomal enzyme thought to be important for fertility. By immunofluorescence, a prominent signal was detected on the acrosomal surface (boar and bull) and on the sperm tail principal piece (bull). A second immune serum raised against a synthetic peptide corresponding to an immunogenic internal sequence (GTGKSPRRTL) of the porcine ARSA also labeled sperm acrosome and principal piece. Both sera showed diminished immunoreactivity in the defective bull spermatozoa co-labeled with an anti-ubiquitin antibody. Western blotting and image-based flow cytometry (IBFC) confirmed a reduced ARSA immunoreactivity in the immotile sperm fraction rich in ubiquitinated spermatozoa. Larger than expected ARSA-immunoreactive bands were found in sperm protein extracts immunoprecipitated with anti-ubiquitin antibodies and affinity purified with matrix-bound, recombinant ubiquitin-binding UBA domain. These bands did not show the typical pattern of ARSA glycosylation but overlapped with bands preferentially binding the Lens culinaris agglutinin (LCA) lectin. By both epifluorescence microscopy and IBFC, the LCA binding was increased in the ubiquitinated spermatozoa with diminished ARSA immunoreactivity. ARSA was also found in the epididymal fluid suggesting that in addition to intrinsic ARSA expression in the testis, epididymal spermatozoa take up ARSA on their surface during the epididymal passage. We conclude that sperm surface ARSA is one of the ubiquitinated sperm surface glycoproteins in defective bull spermatozoa. Defective sperm surface thus differs from normal sperm surface by increased ubiquitination, reduced ARSA binding, and altered glycosylation.
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Affiliation(s)
- Kathleen M Kelsey
- Division of Animal Sciences, University of Missouri, Columbia, MO, 65211-5300, USA
| | - Michal Zigo
- Division of Animal Sciences, University of Missouri, Columbia, MO, 65211-5300, USA.
| | - Winston E Thompson
- Departments of Obstetrics & Gynecology and Reproductive Health Program, Morehouse School of Medicine, 720 Westview Dr SW, Atlanta, GA, 30310, USA
| | - Karl Kerns
- Division of Animal Sciences, University of Missouri, Columbia, MO, 65211-5300, USA
| | - Gaurishankar Manandhar
- Division of Animal Sciences, University of Missouri, Columbia, MO, 65211-5300, USA
- Central Department of Biotechnology, Tribhuvan University, Kirtipur, Kathmandu, Nepal
| | - Miriam Sutovsky
- Division of Animal Sciences, University of Missouri, Columbia, MO, 65211-5300, USA
| | - Peter Sutovsky
- Division of Animal Sciences, University of Missouri, Columbia, MO, 65211-5300, USA
- Departments of Obstetrics, Gynecology and Women's Health, University of Missouri, Columbia, MO, 65211, USA
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Dadras H, Dzyuba V, Golpour A, Xin M, Dzyuba B. In vitro antioxidant enzyme activity and sperm motility at different temperatures in sterlet Acipenser ruthenus and rainbow trout Oncorhynchus mykiss. Fish Physiol Biochem 2019; 45:1791-1800. [PMID: 31286338 DOI: 10.1007/s10695-019-00675-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2018] [Accepted: 06/18/2019] [Indexed: 06/09/2023]
Abstract
Influence of in vitro temperature on sperm antioxidant enzyme activity, thiobarbituric acid-reactive substance (TBARS) content and motility parameters was evaluated in sterlet Acipenser ruthenus and rainbow trout Oncorhynchus mykiss. Sperm activation was conducted at 4, 14 and 24 °C in both species. Duration of motility was significantly longer at 4 °C than at 14 and 24 °C in both species. At 60 s post-activation, the velocity of sterlet spermatozoa was highest at 24 °C. This trend continued to 420 s post-activation. In rainbow trout, at 10 s post-activation, the highest velocity was observed at 14 °C. Significantly higher catalase activity was seen at 4 °C in both species. No significant difference in spermatozoon superoxide dismutase activity among temperatures was observed. In sterlet, TBARS content was significantly higher at 24 °C compared to other temperatures, but, in rainbow trout, it was highest at 4 °C. The results presume species-specific level of antioxidant enzyme activity and TBARS content at studied temperatures.
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Affiliation(s)
- Hadiseh Dadras
- Faculty of Fisheries and Protection of Waters, South Bohemia in Research Center of Aquaculture and Biodiversity of Hydrocenoses, Research Institute of Fish Culture and Hydrobiology, University of South Bohemia in Ceske Budejovice, Zátiší728/II, 389 25, Vodňany, Czech Republic.
| | - Viktoriya Dzyuba
- Faculty of Fisheries and Protection of Waters, South Bohemia in Research Center of Aquaculture and Biodiversity of Hydrocenoses, Research Institute of Fish Culture and Hydrobiology, University of South Bohemia in Ceske Budejovice, Zátiší728/II, 389 25, Vodňany, Czech Republic
| | - Amin Golpour
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Innovation Academy for Seed Design, Wuhan, 430072, China
| | - Miaomiao Xin
- Faculty of Fisheries and Protection of Waters, South Bohemia in Research Center of Aquaculture and Biodiversity of Hydrocenoses, Research Institute of Fish Culture and Hydrobiology, University of South Bohemia in Ceske Budejovice, Zátiší728/II, 389 25, Vodňany, Czech Republic
| | - Borys Dzyuba
- Faculty of Fisheries and Protection of Waters, South Bohemia in Research Center of Aquaculture and Biodiversity of Hydrocenoses, Research Institute of Fish Culture and Hydrobiology, University of South Bohemia in Ceske Budejovice, Zátiší728/II, 389 25, Vodňany, Czech Republic
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Wang HS, Zhu Y, Sun F. [Expressions of the adenylate kinase family in asthenospermia]. Zhonghua Nan Ke Xue 2019; 25:1077-1082. [PMID: 32251557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
OBJECTIVE To investigate the expressions of the adenylate kinase (AK) family in the sperm of asthenospermia patients. METHODS We collected semen samples from 30 asthenospermia patients and another 30 normal healthy males, detected the mRNA and protein expressions of AKs by RT-PCR and Western blot, localized the AKs by immunofluorescence assay and immunohistochemistry, and analyzed their association with sperm motility. RESULTS RT-PCR and Western blot showed that AKs 1-9 were expressed in the sperm of all the subjects, and the mRNA and protein expressions of AK1, AK6 and AK7 were significantly lower in the asthenospermia patients than in the normal males. In the testis, AK1 and AK7 were expressed in the cytoplasm while AK6 in the nucleus, and in the sperm, the former two were localized in the flagella while the latter one in the sperm head. Antibody blocking experiments showed that none of the AK1, AK6 and AK7 antibodies had any significant effect on the total or progressive motility of the sperm while cultured with each alone, but co-culturing with the three antibodies markedly reduced the total sperm motility ([80.5 ± 2.4]%) and progressive sperm motility ([60.6 ± 3.6]%) in comparison with those in the control group ([87.6 ± 3.3]% and [70.2 ± 2.3]%) (P < 0.05). CONCLUSIONS The mRNA and protein expressions of AK1, AK6 and AK7 are significantly down-regulated in the sperm of asthenospermia patients, which may be closely related with reduced sperm motility.
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Affiliation(s)
- Han-Shu Wang
- Department of Andrology, International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Yu Zhu
- Department of Andrology, International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Fei Sun
- Department of Andrology, International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
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Ferraro F, Merlino A, Gil J, Cerecetto H, Corvo I, Cabrera M. Cathepsin L Inhibitors with Activity against the Liver Fluke Identified From a Focus Library of Quinoxaline 1,4-di- N-Oxide Derivatives. Molecules 2019; 24:molecules24132348. [PMID: 31247891 PMCID: PMC6651555 DOI: 10.3390/molecules24132348] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 06/17/2019] [Accepted: 06/17/2019] [Indexed: 11/16/2022] Open
Abstract
Infections caused by Fasciola species are widely distributed in cattle and sheep causing significant economic losses, and are emerging as human zoonosis with increasing reports of human cases, especially in children in endemic areas. The current treatment is chemotherapeutic, triclabendazole being the drug of preference since it is active against all parasite stages. Due to the emergence of resistance in several countries, the discovery of new chemical entities with fasciolicidal activity is urgently needed. In our continuous search for new fasciolicide compounds, we identified and characterized six quinoxaline 1,4-di-N-oxide derivatives from our in-house library. We selected them from a screening of novel inhibitors against FhCL1 and FhCL3 proteases, two essential enzymes secreted by juvenile and adult flukes. We report compounds C7, C17, C18, C19, C23, and C24 with an IC50 of less than 10 µM in at least one cathepsin. We studied their binding kinetics in vitro and their enzyme-ligand interactions in silico by molecular docking and molecular dynamic (MD) simulations. These compounds readily kill newly excysted juveniles in vitro and have low cytotoxicity in a Hep-G2 cell line and bovine spermatozoa. Our findings are valuable for the development of new chemotherapeutic approaches against fascioliasis, and other pathologies involving cysteine proteases.
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Affiliation(s)
- Florencia Ferraro
- Laboratorio de I + D de Moléculas Bioactivas, Departamento de Ciencias Biológicas, CENUR Litoral Norte, Universidad de la República, Paysandú 60000, Uruguay
- Laboratorio de Química Teórica y Computacional, Instituto de Química Biológica, Facultad de Ciencias, Universidad de la República, Montevideo 11400, Uruguay
| | - Alicia Merlino
- Laboratorio de Química Teórica y Computacional, Instituto de Química Biológica, Facultad de Ciencias, Universidad de la República, Montevideo 11400, Uruguay
| | - Jorge Gil
- Laboratorio de Reproducción Animal, Producción y Reproducción de Rumiantes, Departamento de Ciencias Biológicas, CENUR Litoral Norte-Facultad de Veterinaria, Universidad de la República, Paysandú 60000, Uruguay
| | - Hugo Cerecetto
- Grupo de Química Medicinal, Laboratorio de Química Orgánica & Área de Radiofarmacia, Centro de Investigaciones Nucleares, Facultad de Ciencias, Universidad de la República, Montevideo 11400, Uruguay
| | - Ileana Corvo
- Laboratorio de I + D de Moléculas Bioactivas, Departamento de Ciencias Biológicas, CENUR Litoral Norte, Universidad de la República, Paysandú 60000, Uruguay.
| | - Mauricio Cabrera
- Laboratorio de I + D de Moléculas Bioactivas, Departamento de Ciencias Biológicas, CENUR Litoral Norte, Universidad de la República, Paysandú 60000, Uruguay.
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Xu CS, Zhou Y, Jiang Z, Wang LE, Huang JJ, Zhang TY, Zhao Y, Shen W, Zou SH, Zang LL. The in vitro effects of gibberellin on human sperm motility. Aging (Albany NY) 2019; 11:3080-3093. [PMID: 31118311 PMCID: PMC6555458 DOI: 10.18632/aging.101963] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Accepted: 05/07/2019] [Indexed: 12/21/2022]
Abstract
Gibberellin, a plant growth regulator, is widely used to increase the shelf life and quality of fruits and vegetables. In this study, human semen samples were exposed to different concentrations of gibberellin, which reduced spermatozoa motility in vitro. Gibberellin exposure also increased levels of reactive oxygen species and the protein levels of apoptosis markers in human sperm. Gibberellin inhibited the activity of Na+/K+-adenosine triphosphatase (ATPase) and Ca2+-ATPase, which maintain the stability of ions inside and outside the membranes of spermatozoa. Moreover, gibberellin exposure suppressed adenosine triphosphate production and reduced the protein levels of adenosine triphosphate synthases, which may have induced the protein expression of adenosine 5'-monophosphate-activated protein kinase (AMPK) and its phosphorylated form. These results suggest that gibberellin reduces human sperm motility in vitro by increasing reactive oxygen species levels and reducing ATPase activity, which may upregulate AMPK and consequently reduce the fertilization potential of spermatozoa.
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Affiliation(s)
- Chun-Shuang Xu
- Center for Reproductive Medicine, Qingdao Women’s and Children’s Hospital, Qingdao University, Qingdao 266034, China
| | - Yi Zhou
- Center for Reproductive Medicine, Qingdao Women’s and Children’s Hospital, Qingdao University, Qingdao 266034, China
| | - Zhou Jiang
- Center for Reproductive Medicine, Qingdao Women’s and Children’s Hospital, Qingdao University, Qingdao 266034, China
| | - Li-E Wang
- Center for Reproductive Medicine, Qingdao Women’s and Children’s Hospital, Qingdao University, Qingdao 266034, China
| | - Jiao-Jiao Huang
- Center for Reproductive Medicine, Qingdao Women’s and Children’s Hospital, Qingdao University, Qingdao 266034, China
| | - Tian-Yu Zhang
- Institute of Reproductive Sciences, College of Life Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Yong Zhao
- Institute of Reproductive Sciences, College of Life Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Wei Shen
- Institute of Reproductive Sciences, College of Life Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Shu-Hua Zou
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Li-Li Zang
- Center for Reproductive Medicine, Qingdao Women’s and Children’s Hospital, Qingdao University, Qingdao 266034, China
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Tian J, Zhang SH, Ma K, Zhao BY, Yan B, Pei CB, Zhou Y, Wang HH, Wang HY, Ma LH, Zhang XZ. [Rho/ROCK signaling pathway and anti-cryodamage ability of human sperm]. Zhonghua Nan Ke Xue 2019; 25:322-328. [PMID: 32216213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
OBJECTIVE To investigate the influence of the Rho/ROCK signaling pathway on the anti-cryodamage ability of human sperm and provide some theoretical evidence for the development of high-efficiency semen cryoprotectants. METHODS We collected semen samples from 25 healthy males, each divided into a fresh, a normal cryopreservation control and an Rho-inhibition group. Before and after freezing, we detected sperm motility, viability, membrane integrity, morphology, DNA fragmentation index (DFI), acrosomal enzyme activity (AEA) and mitochondrial membrane potential (MMP) and determined the expressions of RhoA and ROCK proteins in the sperm by immunofluorescence staining. RESULTS Compared with the normal cryopreservation control, the frozen-thawed sperm of the Rho-inhibition group showed significantly increased sperm motility ( [51.20 ± 7.70]% vs [57.50 ± 6.83]%, P = 0.002), survival rate ( [52.87 ± 5.07]% vs [60.24 ± 5.53]%, P = 0.001), membrane integrity ([59.78±5.56]% vs [67.10 ± 4.43]%, P = 0.001), percentage of morphologically normal sperm ([4.83 ± 1.11]% vs [7.46 ± 1.28], P = 0.001) and MMP (56.30 ± 4.28 vs 63.11 ± 2.97, P = 0.001), but decreased DFI ([27.64 ± 6.64]% vs [18.87 ± 4.07]%, P = 0.001). There was no statistically significant difference in the AEA of the frozen-thawed sperm between the control and Rho-inhibition groups (97.65 ± 9.31 vs 98.30 ± 11.33, P > 0.05). Immunofluorescence staining revealed extensive expressions of RhoA and ROCK proteins in the head and neck of the sperm. CONCLUSIONS The Rho/ROCK signaling pathway plays a role in the cryodamage to human sperm, and inhibiting the activity of Rho/ROCK can significantly improve the ability of sperm to resist cryodamage.
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Affiliation(s)
- Jia Tian
- Ningxia Human Sperm Bank / Key Laboratory for Fertility Preservation and Maintenance of the Ministry of Education, General Hospital of Ningxia Medical University, Yinchuan, Ningxia 750004, China
| | - Shao-Hua Zhang
- School of Clinical Medicine, Ningxia Medical University, Yinchuan, Ningxia 750004, China
| | - Ke Ma
- School of Clinical Medicine, Ningxia Medical University, Yinchuan, Ningxia 750004, China
| | - Bao-Yun Zhao
- School of Clinical Medicine, Ningxia Medical University, Yinchuan, Ningxia 750004, China
| | - Bei Yan
- Ningxia Human Sperm Bank / Key Laboratory for Fertility Preservation and Maintenance of the Ministry of Education, General Hospital of Ningxia Medical University, Yinchuan, Ningxia 750004, China
| | - Cheng-Bin Pei
- Ningxia Human Sperm Bank / Key Laboratory for Fertility Preservation and Maintenance of the Ministry of Education, General Hospital of Ningxia Medical University, Yinchuan, Ningxia 750004, China
| | - Yue Zhou
- Ningxia Human Sperm Bank / Key Laboratory for Fertility Preservation and Maintenance of the Ministry of Education, General Hospital of Ningxia Medical University, Yinchuan, Ningxia 750004, China
| | - Hong-Hong Wang
- Ningxia Human Sperm Bank / Key Laboratory for Fertility Preservation and Maintenance of the Ministry of Education, General Hospital of Ningxia Medical University, Yinchuan, Ningxia 750004, China
| | - Hong-Yan Wang
- Ningxia Human Sperm Bank / Key Laboratory for Fertility Preservation and Maintenance of the Ministry of Education, General Hospital of Ningxia Medical University, Yinchuan, Ningxia 750004, China
| | - Liang-Hong Ma
- Ningxia Human Sperm Bank / Key Laboratory for Fertility Preservation and Maintenance of the Ministry of Education, General Hospital of Ningxia Medical University, Yinchuan, Ningxia 750004, China
| | - Xin-Zong Zhang
- Guangdong Human Sperm Bank, Family Planning Hospital of Guangdong Province, Guangzhou, Guangdong 510600, China
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Marzec-Wróblewska U, Kamiński P, Łakota P, Szymański M, Wasilow K, Ludwikowski G, Jerzak L, Stuczyński T, Woźniak A, Buciński A. Human Sperm Characteristics with Regard to Cobalt, Chromium, and Lead in Semen and Activity of Catalase in Seminal Plasma. Biol Trace Elem Res 2019; 188:251-260. [PMID: 29959647 DOI: 10.1007/s12011-018-1416-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Accepted: 12/12/2017] [Indexed: 11/25/2022]
Abstract
We analyzed cobalt (Co), chromium (Cr), and lead (Pb) concentrations in human semen and catalase CAT activity in seminal plasma and the effects of their relations on the sperm quality. We obtained semen samples from men (n = 168) undergoing routine infertility evaluation. Studies included two groups based on the ejaculate parameters: I (n = 39; normal ejaculate; normozoospermia); II (n = 129; pathological spermiogram). We examined relationships and differences between Co, Cr, and Pb concentrations in seminal plasma, CAT activity, and semen parameters. We did not establish differences in Co, Cr, and Pb concentrations and CAT activity from men between normozoospermic and those with pathological spermiogram. We found a significantly lower Co concentration and CAT activity in males with normal sperm motility than in asthenozoospermic males. We found significantly lower Co and a higher Pb concentration in males with normal morphology of spermatozoa than in teratozoospermic males. We found a significantly higher Pb concentration in the individuals with consumption of alcohol than in those without consumption. There were significant correlations between Co and Pb concentrations, sperm progressive motility (A + B, i.e., fast and slow progressive motility; Co-negatively; Pb-positively), and normal morphology of spermatozoa (Co-negatively; Pb-positively). We found a significant negative correlation between Cr concentration and slow progressive motility, and between CAT activity and volume of ejaculate. Co, Cr, and Pb levels and CAT activity were related to sperm characteristics and male fertility. The impact of alcohol may be manifested by a disturbance in Pb equilibrium in the body. Co and Pb influence progressive motility and normal morphology of human spermatozoa. Thus, Co and Pb levels in semen may be a useful diagnostic in male infertility. Most of the results of this study are in contrast to expectations. Namely, Pb is a toxic element and its harmful effects (poor semen quality) may be expected already at relatively low level of Pb exposure and are particularly visible with increasing of Pb. Co and Cr(III) are essential elements and harmful effects may be expected at their deficiency and/or overexposure.
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Affiliation(s)
- Urszula Marzec-Wróblewska
- Collegium Medicum in Bydgoszcz, Faculty of Medicine, Department of Medical and Biochemical Biology, Department of Ecology and Environmental Protection, Nicolaus Copernicus University in Toruń, M. Skłodowska-Curie St. 9, PL, 85-094, Bydgoszcz, Poland
- Collegium Medicum in Bydgoszcz, Faculty of Pharmacy, Chair and Department of Biopharmacy, Nicolaus Copernicus University in Toruń, dr. A. Jurasz St. 2, PL, 85-089, Bydgoszcz, Poland
| | - Piotr Kamiński
- Collegium Medicum in Bydgoszcz, Faculty of Medicine, Department of Medical and Biochemical Biology, Department of Ecology and Environmental Protection, Nicolaus Copernicus University in Toruń, M. Skłodowska-Curie St. 9, PL, 85-094, Bydgoszcz, Poland.
- Faculty of Biological Sciences, Department of Biotechnology, University of Zielona Góra, Prof. Szafran St. 1, PL, 65-516, Zielona Góra, Poland.
| | - Paweł Łakota
- Faculty of Animal Biology, Department of Animal Biotechnology, University of Technology and Life Sciences, Mazowiecka St. 28, 85-084, Bydgoszcz, Poland
| | - Marek Szymański
- Collegium Medicum in Bydgoszcz, Faculty of Medicine, University Hospital No. 2, Department of Obstetrics, Female Pathology and Oncological Gynecology, Nicolaus Copernicus University in Toruń, Ujejski St. 75, 85-168, Bydgoszcz, Poland
- NZOZ Medical Center Co. Prof. dr. hab. med. Wiesław Szymański, Dr. hab. med. Marek Szymański, Waleniowa St. 24, 85-435, Bydgoszcz, Poland
| | - Karolina Wasilow
- NZOZ Medical Center Co. Prof. dr. hab. med. Wiesław Szymański, Dr. hab. med. Marek Szymański, Waleniowa St. 24, 85-435, Bydgoszcz, Poland
- Collegium Medicum in Bydgoszcz, Faculty of Medicine, University Hospital No. 2, Family Medicine Clinic, Nicolaus Copernicus University in Toruń, Ujejski St. 75, 85-168, Bydgoszcz, Poland
| | - Grzegorz Ludwikowski
- Collegium Medicum in Bydgoszcz, Faculty of Medicine, University Hospital No. 2, Department of Clinical Andrology, Nicolaus Copernicus University in Toruń, Szpitalna St. 19, 85-092, Bydgoszcz, Poland
| | - Leszek Jerzak
- Faculty of Biological Sciences, Department of Nature Protection, University of Zielona Góra, Prof. Szafran St. 1, PL, 65-516, Zielona Góra, Poland
| | - Tomasz Stuczyński
- Faculty of Mathematics Informatics and Landscape Architecture, The John Paul II Catholic University of Lublin, Konstantynów 1 H, PL, 20-708, Lublin, Poland
| | - Alina Woźniak
- Collegium Medicum in Bydgoszcz, Department of Medical and Biochemical Biology, Nicolaus Copernicus University, Karłowicz St. 24, PL, 85-092, Bydgoszcz, Poland
| | - Adam Buciński
- Collegium Medicum in Bydgoszcz, Faculty of Pharmacy, Chair and Department of Biopharmacy, Nicolaus Copernicus University in Toruń, dr. A. Jurasz St. 2, PL, 85-089, Bydgoszcz, Poland
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Zhu Z, Li R, Ma G, Bai W, Fan X, Lv Y, Luo J, Zeng W. 5'-AMP-Activated Protein Kinase Regulates Goat Sperm Functions via Energy Metabolism In Vitro. Cell Physiol Biochem 2018; 47:2420-2431. [PMID: 29991051 DOI: 10.1159/000491616] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Accepted: 04/24/2018] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND/AIMS ATP is essential for mammalian sperm to survive and maintain fertilizing capacity. AMP-activated protein kinase (AMPK) is a sensor of cellular energy status. The aims of the present study were to explore the localization of AMPK in goat sperm and to investigate whether and how AMPK regulates sperm functions in vitro. METHODS Sperm were treated with AMPK modulators (AICAR, metformin and Compound C) during incubation. Sperm motility was assessed with a computer-assisted spermatozoa analysis system (CASA). Membrane integrity, acrosome reaction and mitochondrial membrane potentials were detected by SYBR-14/PI, FITC-PNA and JC-1 staining, respectively. And the lactate content, ATP content, AMPK activity, activity of pyruvate kinase (PK) and lactate dehydrogenase (LDH) were also measured with the commercial assay kits. Immunofluorescence staining was used to analyze the distribution of PK, LDH, AMPK and phospho-Thr172-AMPK in sperm. The role of AMPK was further studied during induction of capacitation and acrosome reaction. RESULTS We found that AMPKα was localized in the entire acrosomal region, the midpiece and the flagellum, while the phospho-Thr172-AMPK was distributed in the head, the midpiece and flagellum. Activation of AMPK by AICAR and metformin significantly improved sperm motility, membrane integrity and acrosome reaction, largely maintained sperm mitochondrial membrane potentials, lactate content and ATP content, and enhanced the activity of AMPK, PK and LDH, whereas inhibition by Compound C triggered the converse effects. Moreover, PK was localized in the acrosomal area and the midpiece, while LDH was distributed in the tail. Induction of capacitation and acrosome reaction led to AMPK phosphorylation. AMPK phosphorylation regulated the activity of energetic enzymes. CONCLUSION This study for the first time provides evidence that AMPK governs goat sperm functions through energy metabolism in vitro. This finding will help to improve assisted reproductive techniques in goats and the other species.
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Huang P, Qian N, DU WC, Shi WJ, Sun QW, Zhang N. [The role of human lysozyme-like protein 4 in fertilization and its enzymatic properties]. Zhonghua Nan Ke Xue 2018; 24:109-115. [PMID: 30156068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
OBJECTIVE To elucidate the possible role of human lysozyme-like protein 4 (LYZL4) in fertilization and characterize its enzymatic properties. METHODS The localization of LYZL4 in human spermatozoa was investigated by immunofluorescence staining, the sources of LYZL4 on the sperm surface examined by RT-PCR, and the role of LYZL4 in fertilization assessed by the zona-free hamster egg penetration test. The recombinant plasmid pPIC9K-LYZL4 was constructed and its expression induced with methanol after transformed into competent Pichia pastoris GS115. The recombinant LYZL4 protein (rLYZL4) was purified from the fermentation supernatant and subsequently identified by Western blot. The hyaluronan binding ability of rLYZL4 was determined by ELISA and the muramidase activity, hyaluronidase activity, and free radical scavenging ability examined by spectrophotometric methods. RESULTS Immunodetection with a specific antiserum localized LYZL4 on the acrosomal membrane of mature spermatozoa, which was exclusively secreted from the testis and epididymis as shown by RT-PCR. Immunoneutralization of LYZL4 significantly decreased the number of human spermatozoa bound to zona-free hamster eggs in a dose-dependent manner in vitro. The recombinant protein was expressed successfully by the P. pastoris strain GS115. Purified rLYZL4 exhibited a potent hyaluronan binding ability and a strong free radical scavenging ability but no muramidase or hyaluronidase activity. CONCLUSIONS LYZL4 secreted from the testis and epididymis is localized on the acrosomal membrane of mature spermatozoa and plays a role in sperm-egg binding as well as in binding hyaluronan and scavenging free radicals, which suggests that it might be a multi-functional molecule contributive to sperm protection and sperm-egg binding.
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Affiliation(s)
- Peng Huang
- School of Clinical Medicine, Shanghai College of Medical and Health Sciences, Shanghai 201318, China
| | - Neng Qian
- School of Basic Medicine, Shanghai College of Medical and Health Sciences, Shanghai 201318, China
| | - Wang-Chun DU
- School of Clinical Medicine, Shanghai College of Medical and Health Sciences, Shanghai 201318, China
| | - Wei-Jun Shi
- School of Clinical Medicine, Shanghai College of Medical and Health Sciences, Shanghai 201318, China
| | - Qing-Wen Sun
- School of Life Sciences, Fudan University, Shanghai 200438, China
| | - Ning Zhang
- School of Basic Medicine, Shanghai College of Medical and Health Sciences, Shanghai 201318, China
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Kocabaş M, Kutluyer F, Benzer F, Erişir M. Malathion-induced spermatozoal oxidative damage and alterations in sperm quality of endangered trout Salmo coruhensis. Environ Sci Pollut Res Int 2018; 25:2588-2593. [PMID: 29128945 DOI: 10.1007/s11356-017-0700-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Accepted: 11/06/2017] [Indexed: 06/07/2023]
Abstract
The use of pesticides has been increased along with increasing the farming activities and has caused environmental impacts deleteriously. In particular, non-target organisms including fish can be affected by toxic effects of pesticides. Therefore, the impacts of malathion (MTN) on oxidative stress and sperm quality were investigated in vitro. The MTN concentrations used on this study were 0 (control), 75, 100, and 125 μg/L. Lipid peroxidation (MDA), non-enzymatic (GSH), and enzymatic (SOD, GSH-Px, and CAT) activities in spermatozoa were examined for determination of oxidative stress status. Our findings showed that motility rate and period of sperm cells significantly decreased with exposure to MTN. Biochemical assays revealed that CAT activity and levels of MDA, GSH increased in spermatozoa based on concentration while activity of GSH-Px and SOD decreased. Consequently, spermatozoa were highly sensitive to MTN exposure. MTN has disruptive effects on sperm quality and caused to oxidative stress in spermatozoa.
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Affiliation(s)
- Mehmet Kocabaş
- Department of Wildlife Ecology & Management, Karadeniz Technical University Faculty of Forestry, 61080, Trabzon, Turkey
| | - Filiz Kutluyer
- Fisheries Faculty, Munzur University, 62000, Tunceli, Turkey.
| | - Fulya Benzer
- Faculty of Engineering, Department of Food Engineering, Munzur University, 62000, Tunceli, Turkey
| | - Mine Erişir
- Faculty of Veterinary, Department of Basic Sciences, Fırat University, Elazığ, Turkey
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Intra J, Veltri C, De Caro D, Perotti ME, Pasini ME. In vitro evidence for the participation of Drosophila melanogaster sperm β-N-acetylglucosaminidases in the interactions with glycans carrying terminal N-acetylglucosamine residues on the egg's envelopes. Arch Insect Biochem Physiol 2017; 96:e21403. [PMID: 28695569 DOI: 10.1002/arch.21403] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Fertilization is a complex and multiphasic process, consisting of several steps, where egg-coating envelope's glycoproteins and sperm surface receptors play a critical role. Sperm-associated β-N-acetylglucosaminidases, also known as hexosaminidases, have been identified in a variety of organisms. Previously, two isoforms of hexosaminidases, named here DmHEXA and DmHEXB, were found as intrinsic proteins in the sperm plasma membrane of Drosophila melanogaster. In the present work, we carried out different approaches using solid-phase assays in order to analyze the oligosaccharide recognition ability of D. melanogaster sperm hexosaminidases to interact with well-defined carbohydrate chains that might functionally mimic egg glycoconjugates. Our results showed that Drosophila hexosaminidases prefer glycans carrying terminal β-N-acetylglucosamine, but not core β-N-acetylglucosamine residues. The capacity of sperm β-N-acetylhexosaminidases to bind micropylar chorion and vitelline envelope was examined in vitro assays. Binding was completely blocked when β-N-acetylhexosaminidases were preincubated with the glycoproteins ovalbumin and transferrin, and the monosaccharide β-N-acetylglucosamine. Overall, these data support the hypothesis of the potential role of these glycosidases in sperm-egg interactions in Drosophila.
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Affiliation(s)
- Jari Intra
- Department of Biosciences, University of Milano, Milano, Italy
| | - Concetta Veltri
- Department of Biosciences, University of Milano, Milano, Italy
| | - Daniela De Caro
- Department of Biosciences, University of Milano, Milano, Italy
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Khatun A, Rahman MS, Ryu DY, Kwon WS, Pang MG. Elevated aminopeptidase N affects sperm motility and early embryo development. PLoS One 2017; 12:e0184294. [PMID: 28859152 PMCID: PMC5578674 DOI: 10.1371/journal.pone.0184294] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Accepted: 08/21/2017] [Indexed: 11/18/2022] Open
Abstract
Aminopeptidase N (APN) is a naturally occurring ectopeptidase present in mammalian semen. Previous studies have demonstrated that APN adversely affects male fertility through the alteration of sperm motility. This enzyme constitutes 0.5 to 1% of the seminal plasma proteins, which can be transferred from the prostasomes to sperms by a fusion process. In the present study, we investigated the molecular mechanism of action of APN and its role in regulating sperm functions and male fertility. In this in vitro study, epididymal mouse spermatozoa were incubated in a capacitating media (pH 7) containing 20 ng/mL of recombinant mouse APN for 90 min. Our results demonstrated that the supplementation of recombinant APN in sperm culture medium significantly increased APN activity, and subsequently altered motility, hyperactivated motility, rapid and medium swimming speeds, viability, and the acrosome reaction of mouse spermatozoa. These effects were potentially caused by increased toxicity in the spermatozoa. Further, altered APN activity in sperm culture medium affected early embryonic development. Interestingly, the effect of elevated APN activity in sperm culture medium was independent of protein tyrosine phosphorylation and protein kinase A activity. On the basis of these results, we concluded that APN plays a significant role in the regulation of several sperm functions and early embryonic development. In addition, increased APN activity could potentially lead to several adverse consequences related to male fertility.
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Affiliation(s)
- Amena Khatun
- Department of Animal Science and Technology, Chung-Ang University, Anseong, Republic of Korea
| | - Md Saidur Rahman
- Department of Animal Science and Technology, Chung-Ang University, Anseong, Republic of Korea
| | - Do-Yeal Ryu
- Department of Animal Science and Technology, Chung-Ang University, Anseong, Republic of Korea
| | - Woo-Sung Kwon
- Department of Animal Science and Technology, Chung-Ang University, Anseong, Republic of Korea
| | - Myung-Geol Pang
- Department of Animal Science and Technology, Chung-Ang University, Anseong, Republic of Korea
- * E-mail:
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Guo JH, Li YQ, Guo XZ, Liu CS, He QH. [Effects of Zhibai Dihuang Decoction on mitochondrial cytochrome oxidase in the spermatogenic cells of rats with ureaplasma urealyticum infection]. Zhonghua Nan Ke Xue 2017; 23:722-727. [PMID: 29726648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
OBJECTIVE To explore the effects of Zhibai Dihuang Decoction (ZDD) on mitochondrial cytochrome oxidase (COX) in the spermatogenic cells of rats with ureaplasma urealyticum (UU) infection. METHODS From forty 4-5 months old SD rats, 30 were randomly selected for the establishment of the model of testicular UU infection by inoculating the bladder with UU suspension and the other 10 injected with normal saline as controls (group A). At 7 days after inoculation, the rat models of testicular UU infection were treated orally with normal saline (group B), ZDD at 1 g per kg of the body weight per day (group C), and azithromycin at 0.105 g per kg of the body weight per day (group D), respectively, once daily for 21 days. Then all the animals were sacrificed and the epididymal and testicular tissues collected for examination of sperm motility with the color sperm dynamic detection system, measurement of the COX activity with the immunohistochemical DAB method, and determination of the mRNA expressions of COXⅠ and COXⅡ by RT-PCR. RESULTS Compared with group A, group B showed significant decreases in such sperm parameters as grade a sperm ([1.03 ± 0.09] vs [0.07 ± 0.03] %, P<0.01), grade b sperm ([2.07 ± 0.52] vs [0.35 ± 0.13] %, P<0.01), straight line velocity (VSL) ([10.95 ± 0.98] vs [6.78 ± 1.05] μm/s, P<0.01), curvilinear velocity (VCL) ([42.03 ± 1.35] vs [38.10 ± 7.65] μm/s, P>0.05), average path velocity (VAP) ([16.22 ± 1.52] vs [10.05 ± 1.80] μm/s, P<0.01), and the mRNA expressions of COX Ⅰ ([2.25 ± 0.24] vs [0.93 ± 0.10] %, P<0.01) and Ⅱ ([6.72 ± 0.37] vs [2.95 ± 0.78] %, P<0.01). After treatment, all the parameters were remarkably increased in groups C and D (grade a sperm: [1.11 ± 0.30] and [0.60 ± 0.19]%; grade b sperm: [2.40 ± 0.59] and [1.32 ± 0.27] %; VSL: [12.11 ± 1.62] and [11.47 ± 1.21] μm/s; VCL: [54.30 ± 2.35] and [45.75 ± 1.64] μm/s; VAP [18.40 ± 1.27] and [16.69 ± 1.02] μm/s; expression of COXⅠ mRNA: [1.86 ± 0.30] and [1.74 ± 0.17] %) as compared with those in group B (P<0.05or P<0.01) except the COX activity and the expression of COX Ⅱ mRNA (P>0.05), and all the parameters were significantly higher in group C than in D (P<0.05or P<0.01). CONCLUSIONS UU infection can reduce grades a and b sperm, linear, curvilinear and mean sperm velocities, and the mRNA expressions of COX Ⅰ and Ⅱ while ZDD can improve these parameters. The improvement of sperm motility may not be associated with the activity of COX, and the COX activity may be related to the mRNA expression of COX II but not that of COXⅠ.
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Affiliation(s)
- Jun-Hua Guo
- Graduate School, Hunan University of Chinese Medicine, Changsha, Hunan 410007, China
- Department of Andrology, YanCheng Hospital of Traditional Chinese Medicine, YanCheng, Jiangsu 224002, China
| | - Ying-Qiu Li
- Graduate School, Hunan University of Chinese Medicine, Changsha, Hunan 410007, China
| | - Xuan-Zuo Guo
- Graduate School, Hunan University of Chinese Medicine, Changsha, Hunan 410007, China
| | - Chao-Sheng Liu
- Graduate School, Hunan University of Chinese Medicine, Changsha, Hunan 410007, China
| | - Qing-Hu He
- Graduate School, Hunan University of Chinese Medicine, Changsha, Hunan 410007, China
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Yao X, Yang H, Zhang Y, Ren C, Nie H, Fan Y, Zhou W, Wang S, Feng X, Wang F. Characterization of GALNTL5 gene sequence and expression in ovine testes and sperm. Theriogenology 2017; 95:54-61. [PMID: 28460680 DOI: 10.1016/j.theriogenology.2017.02.018] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Revised: 02/22/2017] [Accepted: 02/27/2017] [Indexed: 12/14/2022]
Abstract
The polypeptide N-acetylgalactosaminyltransferase-like protein 5 (GALNTL5), which belongs to the polypeptide N-acetylgalactosaminyltransferase (pp-GalNAc-T) gene family, is a newly identified gene that is specifically expressed in testis and involved in spermatogenesis. However, there is no data showing the existence of GALNTL5 in ram testis at various developmental stages and its influence on sperm motility. Therefore, the objectives of the present study were to evaluate the presence of GALNTL5 in the testis of 3-24 months (M) ram and to investigate the expression of GALNTL5 in spermatozoa with different motilities. We detected a 1602 bp cDNA fragment of GALNTL5 that included a 1326 bp coding sequence, encoding 441 amino acids and 90 and 185 bp of the 5' and 3' untranslated regions, respectively. The GALNTL5 amino acid sequence showed 51.87-83.48% identity with the sequences of proteins from other species. It was detected exclusively in the testis and the levels of both the mRNA and protein were progressively increased with age. Immunohistochemistry further revealed that GALNTL5 specifically localized in the elongating spermatids and spermatozoa, and it was demonstrated to be strongly concentrated in the head, neck, and mid-piece region of spermatozoa by immunocytochemistry. The sperm density and the percentage of live sperm in the high motility group (≥80%) were significantly higher than in the low motility group (≤50%), and the reverse trend was observed with the abnormal sperm. Western blot analysis showed that the protein expression of PGK2, ALDOA, and GALNTL5 were significantly higher in the high motility group than in the low motility group. Overall, the data suggest that GALNTL5 is an important functional molecule during spermatogenesis. Moreover, it is the first to suggest that the expression level of GALNTL5 is positively correlated with the sperm motility.
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Affiliation(s)
- Xiaolei Yao
- Jiangsu Engineering Technology Research Center of Mutton Sheep and Goat Industry, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Hua Yang
- Jiangsu Engineering Technology Research Center of Mutton Sheep and Goat Industry, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Yanli Zhang
- Jiangsu Engineering Technology Research Center of Mutton Sheep and Goat Industry, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Caifang Ren
- Jiangsu Engineering Technology Research Center of Mutton Sheep and Goat Industry, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Haitao Nie
- Jiangsu Engineering Technology Research Center of Mutton Sheep and Goat Industry, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Yixuan Fan
- Jiangsu Engineering Technology Research Center of Mutton Sheep and Goat Industry, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Wenjun Zhou
- Jiangsu Engineering Technology Research Center of Mutton Sheep and Goat Industry, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Shuting Wang
- Jiangsu Engineering Technology Research Center of Mutton Sheep and Goat Industry, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Xu Feng
- Jiangsu Engineering Technology Research Center of Mutton Sheep and Goat Industry, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Feng Wang
- Jiangsu Engineering Technology Research Center of Mutton Sheep and Goat Industry, Nanjing Agricultural University, Nanjing 210095, PR China.
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Abstract
We investigated adenylyl cyclase activity of mouse spermatozoa by electron microscopic cytochemistry. Subcellular localization of enzyme activity was determined in the presence and absence of bicarbonate ions. Results confirm the existence in sperm of a bicarbonate-regulated adenylyl cyclase, which suggests microdomain signaling. (J Histochem Cytochem 52:833–836, 2004)
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Affiliation(s)
- Lavinia Liguori
- Dipartimento di Scienze Biochimiche Biotecnologie Molecolari, Sezione Biochimica Cellulare, Università di Perugia, Perugia, Italia
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Cui Z, Fan C, Pang C, Zheng D, Liu Y, Chen L, Zhang D, Lan F. Improvement and Evaluation of a Staining Method for Measuring Sperm Lactate Dehydrogenase C4 Activity. Clin Lab 2016; 62:581-8. [PMID: 27215076 DOI: 10.7754/clin.lab.2015.150739] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BACKGROUND This study sought to improve and evaluate a 2-hydroxyvaleric acid based staining method for detection of lactate dehydrogenase C4 (LDH-C4) activity in human spermatozoa. METHODS A staining method for measuring sperm LDH-C4 activity with the substrate 2-hydroxyvaleric acid was improved. Expression level of LDH-C4 was assessed by Western blotting. The diagnostic performance was evaluated by plotting the receiver operating characteristic (ROC) curve. RESULTS The positive products were black purple lumps concentrated in the neck segment of spermatozoa. Expression level of LDH-C4 was significantly reduced in the low activity infertile cases as compared to the matched contrasts. Decreased LDH-C4 level was significantly correlated with the declined enzyme activity (r = 0.702, p = 0.000). The ROC curve allowed for the discrimination between low and normal LDH-C4 activity cases with a sensitivity of 0.912 and specificity of 0.895, corresponding to an area under curve (AUC) of 0.941. CONCLUSIONS The improved method hallmarks a promising accuracy in evaluating sperm LDH-C4 activity. Down-regulated LDH-C4 level is a culprit for the decreased LDH-C4 activity in spermatozoa.
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Danshina PV, Qu W, Temple BR, Rojas RJ, Miley MJ, Machius M, Betts L, O'Brien DA. Structural analyses to identify selective inhibitors of glyceraldehyde 3-phosphate dehydrogenase-S, a sperm-specific glycolytic enzyme. Mol Hum Reprod 2016; 22:410-26. [PMID: 26921398 PMCID: PMC4884916 DOI: 10.1093/molehr/gaw016] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Revised: 02/11/2016] [Accepted: 02/22/2016] [Indexed: 12/21/2022] Open
Abstract
STUDY HYPOTHESIS Detailed structural comparisons of sperm-specific glyceraldehyde 3-phosphate dehydrogenase, spermatogenic (GAPDHS) and the somatic glyceraldehyde 3-phosphate dehydrogenase (GAPDH) isozyme should facilitate the identification of selective GAPDHS inhibitors for contraceptive development. STUDY FINDING This study identified a small-molecule GAPDHS inhibitor with micromolar potency and >10-fold selectivity that exerts the expected inhibitory effects on sperm glycolysis and motility. WHAT IS KNOWN ALREADY Glycolytic ATP production is required for sperm motility and male fertility in many mammalian species. Selective inhibition of GAPDHS, one of the glycolytic isozymes with restricted expression during spermatogenesis, is a potential strategy for the development of a non-hormonal contraceptive that directly blocks sperm function. STUDY DESIGN, SAMPLES/MATERIALS, METHODS Homology modeling and x-ray crystallography were used to identify structural features that are conserved in GAPDHS orthologs in mouse and human sperm, but distinct from the GAPDH orthologs present in somatic tissues. We identified three binding pockets surrounding the substrate and cofactor in these isozymes and conducted a virtual screen to identify small-molecule compounds predicted to bind more tightly to GAPDHS than to GAPDH. Following the production of recombinant human and mouse GAPDHS, candidate compounds were tested in dose-response enzyme assays to identify inhibitors that blocked the activity of GAPDHS more effectively than GAPDH. The effects of a selective inhibitor on the motility of mouse and human sperm were monitored by computer-assisted sperm analysis, and sperm lactate production was measured to assess inhibition of glycolysis in the target cell. MAIN RESULTS AND THE ROLE OF CHANCE Our studies produced the first apoenzyme crystal structures for human and mouse GAPDHS and a 1.73 Å crystal structure for NAD(+)-bound human GAPDHS, facilitating the identification of unique structural features of this sperm isozyme. In dose-response assays T0501_7749 inhibited human GAPDHS with an IC50 of 1.2 μM compared with an IC50 of 38.5 μM for the somatic isozyme. This compound caused significant reductions in mouse sperm lactate production (P= 0.017 for 100 μM T0501_7749 versus control) and in the percentage of motile mouse and human sperm (P values from <0.05 to <0.0001, depending on incubation conditions). LIMITATIONS, REASONS FOR CAUTION The chemical properties of T0501_7749, including limited solubility and nonspecific protein binding, are not optimal for drug development. WIDER IMPLICATIONS OF THE FINDINGS This study provides proof-of-principle evidence that GAPDHS can be selectively inhibited, causing significant reductions in sperm glycolysis and motility. These results highlight the utility of structure-based drug design and support further exploration of GAPDHS, and perhaps other sperm-specific isozymes in the glycolytic pathway, as contraceptive targets. LARGE SCALE DATA None. Coordinates and data files for three GAPDHS crystal structures were deposited in the RCSB Protein Data Bank (http://www.rcsb.org). STUDY FUNDING AND COMPETING INTERESTS This work was supported by grants from the National Institutes of Health (NIH), USA, including U01 HD060481 and cooperative agreement U54 HD35041 as part of the Specialized Cooperative Centers Program in Reproduction and Infertility Research from the Eunice Kennedy Shriver National Institute of Child Health and Human Development, and TW/HD00627 from the NIH Fogarty International Center. Additional support was provided by subproject CIG-05-109 from CICCR, a program of CONRAD, Eastern Virginia Medical School, USA. There are no conflicts of interest.
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Affiliation(s)
- Polina V Danshina
- Department of Cell Biology and Physiology, University of North Carolina School of Medicine, Chapel Hill, NC 27599, USA
| | - Weidong Qu
- Department of Cell Biology and Physiology, University of North Carolina School of Medicine, Chapel Hill, NC 27599, USA Present address: Key Laboratory of Public Health Safety, Ministry of Education, Department of Environmental Health, School of Public Health, Fudan University, Shanghai 200032, China
| | - Brenda R Temple
- R.L. Juliano Structural Bioinformatics Core Facility, University of North Carolina School of Medicine, Chapel Hill, NC 27599, USA
| | - Rafael J Rojas
- Department of Pharmacology, University of North Carolina School of Medicine, Chapel Hill, NC 27599, USA Present address: Dart NeuroScience, LLC, San Diego, CA 92131, USA
| | - Michael J Miley
- Macromolecular X-Ray Crystallography Core Facility, University of North Carolina School of Medicine, Chapel Hill, NC 27599, USA
| | - Mischa Machius
- Macromolecular X-Ray Crystallography Core Facility, University of North Carolina School of Medicine, Chapel Hill, NC 27599, USA Present address: 230 Jamestown Road, Pittsboro, NC 27312, USA
| | - Laurie Betts
- Department of Cell Biology and Physiology, University of North Carolina School of Medicine, Chapel Hill, NC 27599, USA
| | - Deborah A O'Brien
- Department of Cell Biology and Physiology, University of North Carolina School of Medicine, Chapel Hill, NC 27599, USA
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Choi H, Choi B, Seo JT, Lee KJ, Gye MC, Kim YP. Rapid Detection of Glycogen Synthase Kinase-3 Activity in Mouse Sperm Using Fluorescent Gel Shift Electrophoresis. Sensors (Basel) 2016; 16:s16040551. [PMID: 27092510 PMCID: PMC4851065 DOI: 10.3390/s16040551] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/21/2016] [Revised: 03/30/2016] [Accepted: 04/13/2016] [Indexed: 12/17/2022]
Abstract
Assaying the glycogen synthase kinase-3 (GSK3) activity in sperm is of great importance because it is closely implicated in sperm motility and male infertility. While a number of studies on GSK3 activity have relied on labor-intensive immunoblotting to identify phosphorylated GSK3, here we report the simple and rapid detection of GSK3 activity in mouse sperm using conventional agarose gel electrophoresis and a fluorescent peptide substrate. When a dye-tethered and prephosphorylated (primed) peptide substrate for GSK3 was employed, a distinct mobility shift in the fluorescent bands on the agarose was observed by GSK3-induced phosphorylation of the primed peptides. The GSK3 activity in mouse testes and sperm were quantifiable by gel shift assay with low sample consumption and were significantly correlated with the expression levels of GSK3 and p-GSK3. We suggest that our assay can be used for reliable and rapid detection of GSK3 activity in cells and tissue extracts.
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Affiliation(s)
- Hoseok Choi
- Department of Life Science, Hanyang University, Seoul 04763, Korea.
- Research Institute for Natural Sciences, Hanyang University, Seoul 04763, Korea.
| | - Bomi Choi
- Department of Life Science, Hanyang University, Seoul 04763, Korea.
- Research Institute for Natural Sciences, Hanyang University, Seoul 04763, Korea.
| | - Ju Tae Seo
- Department of Urology, College of Medicine, Dankook University, Cheil General Hospital, Seoul 04619, Korea.
| | - Kyung Jin Lee
- Department of Convergence Medicine, Asan Institute for Life Sciences, University of Ulsan College of Medicine, Asan Medical Center, Seoul 05505, Korea.
| | - Myung Chan Gye
- Department of Life Science, Hanyang University, Seoul 04763, Korea.
- Research Institute for Natural Sciences, Hanyang University, Seoul 04763, Korea.
| | - Young-Pil Kim
- Department of Life Science, Hanyang University, Seoul 04763, Korea.
- Research Institute for Natural Sciences, Hanyang University, Seoul 04763, Korea.
- Institute of Nano Science and Technology, Hanyang University, Seoul 04763, Korea.
- Research Institute for Convergence of Basic Sciences, Hanyang University, Seoul 04763, Korea.
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Camarillo-Sepulveda N, Hamoutene D, Lush L, Burt K, Volkoff H, Fleming IA. Sperm traits in farmed and wild Atlantic salmon Salmo salar. J Fish Biol 2016; 88:709-717. [PMID: 26549612 DOI: 10.1111/jfb.12801] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2014] [Accepted: 08/07/2015] [Indexed: 06/05/2023]
Abstract
Differences in sperm metabolism and morphology between wild and non-local farmed Atlantic salmon Salmo salar were assessed by measuring metabolic enzyme activities and length of sperm flagella. No differences were observed between wild and farmed S. salar sperm with regards to cell counts or any of the biochemical variables assessed. Flagella of sperm cells were significantly longer in wild than farmed S. salar; however, this did not result in higher energy levels or different fertilization rates.
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Affiliation(s)
- N Camarillo-Sepulveda
- Fisheries and Oceans Canada, Northwest Atlantic Fisheries Center, P. O. Box 5667, St John's, NL, A1C 5X1, Canada
- Department of Biochemistry and Biology, Memorial University of Newfoundland (MUN), St John's, NL, A1B 3X9, Canada
| | - D Hamoutene
- Fisheries and Oceans Canada, Northwest Atlantic Fisheries Center, P. O. Box 5667, St John's, NL, A1C 5X1, Canada
| | - L Lush
- Fisheries and Oceans Canada, Northwest Atlantic Fisheries Center, P. O. Box 5667, St John's, NL, A1C 5X1, Canada
| | - K Burt
- Fisheries and Oceans Canada, Northwest Atlantic Fisheries Center, P. O. Box 5667, St John's, NL, A1C 5X1, Canada
| | - H Volkoff
- Department of Biochemistry and Biology, Memorial University of Newfoundland (MUN), St John's, NL, A1B 3X9, Canada
| | - I A Fleming
- Fish Evolutionary Ecology Research Group and Department of Ocean Sciences, MUN, St John's, NL, A1C 5S7, Canada
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27
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Kumar DL, Kumar PL, James PF. Methylation-dependent and independent regulatory regions in the Na,K-ATPase alpha4 (Atp1a4) gene may impact its testis-specific expression. Gene 2016; 575:339-52. [PMID: 26343794 PMCID: PMC4662617 DOI: 10.1016/j.gene.2015.09.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Revised: 08/31/2015] [Accepted: 09/03/2015] [Indexed: 10/23/2022]
Abstract
The α4 Na,K-ATPase is a sperm-specific protein essential for sperm motility and fertility yet little is known about the mechanisms that regulate its expression in germ cells. Here, the potential involvement of DNA methylation in regulating the expression of this sperm-specific protein is explored. A single, intragenic CpG island (Mα4-CGI) was identified in the gene encoding the mouse α4 Na,K-ATPase (Atp1a4), which displayed reduced methylation in mouse sperm (cells that contain α4) compared to mouse kidney (tissue that lacks α4 expression). Unlike the intragenic CGI, the putative promoter (the -700 to +200 region relative to the transcriptional start site) of Atp1a4 did not show differential methylation between kidney and sperm nevertheless it did drive methylation-dependent reporter gene expression in the male germ cell line GC-1spg. Furthermore, treatment of GC-1spg cells with 5-aza2-deoxycytidine led to upregulation of the α4 transcript and decreased methylation of both the Atp1a4 promoter and the Mα4-CGI. In addition, Atp1a4 expression in mouse embryonic stem cells deficient in DNA methyltransferases suggests that both maintenance and de novo methylation are involved in regulating its expression. In an attempt to define the regulatory function of the Mα4-CGI, possible roles of the Mα4-CGI in regulating Atp1a4 expression via methylation-dependent transcriptional elongation inhibition in somatic cells and via its ability to repress promoter activity in germ cells were uncovered. In all, our data suggests that both the promoter and the intragenic CGI could combine to provide multiple modes of regulation for optimizing the Atp1a4 expression level in a cell type-specific manner.
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Affiliation(s)
- Deepti L Kumar
- Department of Biology, Miami University, Oxford, OH, United States
| | - Priya L Kumar
- Department of Biology, Miami University, Oxford, OH, United States
| | - Paul F James
- Department of Biology, Miami University, Oxford, OH, United States.
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Fafula RV, Onufrovych OK, Lefremova UP, Vorobets DZ, Vorobets ZD. THE PECULIARITIES OF ARGINASE PATHWAY OF L-ARGININE IN SPERMATOZOA IN MEN WITH DIFFERENT FORMS OF PATHOSPERMIA. Fiziol Zh (1994) 2016; 62:83-90. [PMID: 30204347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The changes in arginase activity of spermatozoa and hormonal profile of peripheral blood of infertile men with various forms pathospermia have been studied. It has been found that arginase activity in the sperm cells of men with oligozoo-, antenozoo-, oligoastenozoo- and leucocytospermia is decreased in 2.1, 2.3, 2.4 and 3.3 times respectively. This indicates about inhibition of arginase pathway of L-arginine metabolism, which is not significantly dependent on the type of disruption of spermatogenesis. The most significant changes have been observed in infertile men with leucocytospermia since white blood cells stimulate the formation of reactive oxygen species, induction and development of oxidative and nitrative stress in spermatozoa. Inhibition of arginase pathway of L-arginine metabolism has adaptive role, which is to limit bioavailabil- ity of L-arginine and to prevent excessive formation of NO in cytotoxic concentrations to sperm cells. It has been noted changes in serum concentrations of gonadotropin and sex hormones in men with various forms of pathospermia. The most expressed significant changes were in levels of follicle stimulating hormone and testosterone. The concentration of follicle stimulating hormone in patients with oligozoospermia caused by hypogonadism is twice higher and in patients with leucocytospermia in 1.8 times higher than in fertile men. In patients with astenozoospermia this value is in 2.2 times lower than in normozoospermic samples but within the physiological norm. The testosterone level in men with oligozoospermia is in 1.6 times lower than in fertile men but within the physiological norm. It has been found that arginase inhibition of spermatozoa po6itively correlated with a decrease in their concentration in the ejaculate of infertile men with oligozoospermia (r =0.68).
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Intra J, Concetta V, Daniela DC, Perotti ME, Pasini ME. Drosophila sperm surface alpha-L-fucosidase interacts with the egg coats through its core fucose residues. Insect Biochem Mol Biol 2015; 63:133-143. [PMID: 26101846 DOI: 10.1016/j.ibmb.2015.06.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Revised: 06/17/2015] [Accepted: 06/18/2015] [Indexed: 06/04/2023]
Abstract
Sperm-oocyte interaction during fertilization is multiphasic, with multicomponent events, taking place between egg's glycoproteins and sperm surface receptors. Protein-carbohydrate complementarities in gamete recognition have observed in cases throughout the whole evolutionary scale. Sperm-associated α-L-fucosidases have been identified in various organisms. Their wide distribution and known properties reflect the hypothesis that fucose and α-L-fucosidases have fundamental function(s) during gamete interactions. An α-L-fucosidase has been detected as transmembrane protein on the surface of spermatozoa of eleven species across the genus Drosophila. Immunofluorescence labeling showed that the protein is localized in the sperm plasma membrane over the acrosome and the tail, in Drosophila melanogaster. In the present study, efforts were made to analyze with solid phase assays the oligosaccharide recognition ability of fruit fly sperm α-L-fucosidase with defined carbohydrate chains that can functionally mimic egg glycoconjugates. Our results showed that α-L-fucosidase bound to fucose residue and in particular it prefers N-glycans carrying core α1,6-linked fucose and core α1,3-linked fucose in N-glycans carrying only a terminal mannose residue. The ability of sperm α-L-fucosidase to bind to the micropylar chorion and to the vitelline envelope was examined in in vitro assays in presence of α-L-fucosidase, either alone or in combination with molecules containing fucose residues. No binding was detected when α-L-fucosidase was pre-incubated with fucoidan, a polymer of α-L-fucose and the monosaccharide fucose. Furthermore, egg labeling with anti-horseradish peroxidase, that recognized only core α1,3-linked fucose, correlates with α-L-fucosidase micropylar binding. Collectively, these data support the hypothesis of the potential role of this glycosidase in sperm-egg interactions in Drosophila.
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Affiliation(s)
- Jari Intra
- Department of Biosciences, University of Milano, via Celoria 26, Milano 20133, Italy.
| | - Veltri Concetta
- Department of Biosciences, University of Milano, via Celoria 26, Milano 20133, Italy
| | - De Caro Daniela
- Department of Biosciences, University of Milano, via Celoria 26, Milano 20133, Italy
| | - Maria Elisa Perotti
- Department of Biosciences, University of Milano, via Celoria 26, Milano 20133, Italy
| | - Maria Enrica Pasini
- Department of Biosciences, University of Milano, via Celoria 26, Milano 20133, Italy
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Nguyen TMD, Seigneurin F, Froment P, Combarnous Y, Blesbois E. The 5'-AMP-Activated Protein Kinase (AMPK) Is Involved in the Augmentation of Antioxidant Defenses in Cryopreserved Chicken Sperm. PLoS One 2015. [PMID: 26222070 PMCID: PMC4519194 DOI: 10.1371/journal.pone.0134420] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Semen cryopreservation is a unique tool for the management of animal genetic diversity. However, the freeze-thaw process causes biochemical and physical alterations which make difficult the restoration of sperm energy-dependent functions needed for fertilization. 5'-AMP activated protein kinase (AMPK) is a key sensor and regulator of intracellular energy metabolism. Mitochondria functions are known to be severely affected during sperm cryopreservation with deleterious oxidative and peroxidative effects leading to cell integrity and functions damages. The aim of this study was thus to examine the role of AMPK on the peroxidation/antioxidant enzymes defense system in frozen-thawed sperm and its consequences on sperm functions. Chicken semen was diluted in media supplemented with or without AMPK activators (AICAR or Metformin [MET]) or inhibitor (Compound C [CC]) and then cryopreserved. AMPKα phosphorylation, antioxidant enzymes activities, mitochondrial potential, ATP, citrate, viability, acrosome reaction ability (AR) and various motility parameters were negatively affected by the freeze-thaw process while reactive oxygen species (ROS) production, lipid peroxidation (LPO) and lactate concentration were dramatically increased. AICAR partially restored superoxide dismutase (SOD), Glutathione Peroxidase (GPx) and Glutathione Reductase (GR), increased ATP, citrate, and lactate concentration and subsequently decreased the ROS and LPO (malondialdehyde) in frozen-thawed semen. Motility parameters were increased (i.e., + 23% for motility, + 34% for rapid sperm) as well as AR (+ 100%). MET had similar effects as AICAR except that catalase activity was restored and that ATP and mitochondrial potential were further decreased. CC showed effects opposite to AICAR on SOD, ROS, LPO and AR and motility parameters. Taken together, our results strongly suggest that, upon freeze-thaw process, AMPK stimulated intracellular anti-oxidative defense enzymes through ATP regulation, thus reducing ROS and lipid peroxidation, and consequently partially restoring several essential sperm functions and leading to a better quality of cryopreserved sperm.
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Affiliation(s)
- Thi Mong Diep Nguyen
- INRA-CNRS, Unité Mixte de Recherche de Physiologie de la Reproduction et des Comportements, F-37380 Nouzilly, France
- Université François Rabelais, Tours, France
| | | | - Pascal Froment
- INRA-CNRS, Unité Mixte de Recherche de Physiologie de la Reproduction et des Comportements, F-37380 Nouzilly, France
| | - Yves Combarnous
- INRA-CNRS, Unité Mixte de Recherche de Physiologie de la Reproduction et des Comportements, F-37380 Nouzilly, France
| | - Elisabeth Blesbois
- INRA-CNRS, Unité Mixte de Recherche de Physiologie de la Reproduction et des Comportements, F-37380 Nouzilly, France
- * E-mail:
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Dávila F, Chérasse S, Boomsma JJ, Aron S. Ant sperm storage organs do not have phenoloxidase constitutive immune activity. J Insect Physiol 2015; 78:9-14. [PMID: 25911976 DOI: 10.1016/j.jinsphys.2015.04.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Revised: 03/13/2015] [Accepted: 04/22/2015] [Indexed: 06/04/2023]
Abstract
The prophenoloxidase system (proPO-AS) is a primordial constituent of insect innate immunity. Its broad action spectrum, rapid response time, and cytotoxic by-products induced by phenoloxidase (PO) production contribute to the effective clearing of invading pathogens. However, such immune reactions may not be optimal for insect organs that evolved to have mutualistic interactions with non-self-cells. Ant queens are long-lived, but only mate early in adult life and store the sperm in a specialized organ, the spermatheca. They never re-mate so their life-time reproductive success is ultimately sperm-limited, which maintains strong selection for high sperm viability before and after storage. The proPO-AS may therefore be inappropriate for the selective clearing of sexually transmitted infections, as it might also target sperm cells that cannot be replaced. We measured PO enzymatic activity in the sperm storage organs of three ant species before and after mating. Our data show that no PO is produced in the sperm storage organs, relative to other somatic tissues as controls, and that these negative results are not due to non-detection in small volumes as non-immune-relevant catalase activity in single spermatheca fluid samples of both virgin and mated queens was significant. The lack of PO activity in sperm storage organs across three different ant species may represent an evolutionarily conserved adaptation to life-long sperm storage by ant queens. We expect that PO activity will be similarly suppressed in queen spermathecae of other eusocial Hymenoptera (bees and wasps) and, more generally, of insect females that store sperm for long periods.
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Affiliation(s)
- Francisco Dávila
- Evolutionary Biology and Ecology, Université Libre de Bruxelles, 1050 Brussels, Belgium.
| | - Sarah Chérasse
- Centre for Social Evolution, University of Copenhagen, 2100 Copenhagen, Denmark
| | - Jacobus J Boomsma
- Centre for Social Evolution, University of Copenhagen, 2100 Copenhagen, Denmark
| | - Serge Aron
- Evolutionary Biology and Ecology, Université Libre de Bruxelles, 1050 Brussels, Belgium
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Sun WJ, Zhu M, Wang YL, Li Q, Yang HD, Duan ZL, He L, Wang Q. ERK is involved in the process of acrosome reaction in vitro of the Chinese mitten crab, Eriocheir sinensis. Mar Biotechnol (NY) 2015; 17:305-316. [PMID: 25663286 DOI: 10.1007/s10126-015-9619-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2014] [Accepted: 01/08/2015] [Indexed: 06/04/2023]
Abstract
Mitogen-activated protein kinases (MAPKs), also termed extracellular signal-regulated kinases (ERKs), are cytoplasmic and nuclear serine/threonine kinases involved in signal transduction of several extracellular effectors. In mammals, ERKs participate in the regulation of spermatogenesis, mature spermatozoa motility, hyperactivation, and the acrosome reaction. To investigate ERK functions in Eriocheir sinensis reproduction, we successfully cloned the full-length ERK from the testis of E. sinensis (ES-ERK). The 1098-nucleotide open reading frame encodes a 365-amino-acid protein with a predicted molecular weight of 42 kDa. Expressions of ES-ERK in different tissues and testis development stages were detected by the quantitative RT-PCR and Western blotting. ES-ERK is expressed relatively highly in the testis. The expression of ES-ERK protein gradually increased in the spermatid stage, reaching a peak in sperm stage. Western blotting showed a similar expression pattern for the total ES-ERK protein, but phospho-ERK (p-ERK) showed the higher expression in spermatid than sperm stage. We also used trypan blue and hematoxylin and eosin staining to identify structural changes in E. sinensis spermatozoa during the process of acrosome reaction (AR). After stimulating the process of AR, the ES-ERK has translocated from the nucleus to the acrosomal tubule. This result suggested that the ERK MAPK might be involved in the regulation of the E. sinensis acrosome reaction.
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Affiliation(s)
- Wen-Juan Sun
- School of Life Science, East China Normal University, Shanghai, China
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Stephens K, Thaler CD, Cardullo RA. Characterization of plasma membrane associated type II α-D-mannosidase and β-N-acetylglucosaminidase of Aquarius remigis sperm. Insect Biochem Mol Biol 2015; 60:78-85. [PMID: 25801709 DOI: 10.1016/j.ibmb.2015.03.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Revised: 02/25/2015] [Accepted: 03/10/2015] [Indexed: 06/04/2023]
Abstract
For successful fertilization to occur, molecules on the surface of male and female gametes must recognize each other in a complementary manner. In some organisms, sperm possess a glycosidase on the plasma membrane overlying the head while eggs have glycoproteins that are recognized by those glycosidases resulting in sperm-egg recognition. In this study, two glycosidases, mannosidase and β-N-acetylglucosaminidase, were identified and biochemically characterized in Aquarius remigis sperm. The mannosidase had a Km of 2.36 ± 0.19 mM, a Vmax of 27.49 ± 0.88 pmol/min and a Hill coefficient of 0.94 ± 0.18 at its optimal pH of 7.0. The mannosidase was extracted most efficiently with CHAPSO but was also efficiently extracted with sodium chloride. Mannosidase activity was effectively inhibited by swainsonine, but not by kifunesine, and was significantly reduced in the presence of Mn(2+) and Mg(2+), but not Zn(2+). N-acetylglucosaminidase had a Km of 0.093 ± 0.01 mM, a Vmax of 153.80 ± 2.97 pmol/min and a Hill coefficient of 0.96 ± 0.63 at its optimal pH of 7.0. N-acetylglucosaminidase was extracted most efficiently with potassium iodide but was also efficiently extracted with Triton X-100 and Zn(2+), but not Ca(2+), Co(2+), Mn(2+) or Mg(2+), significantly inhibited its activity. Taken together, these results indicate that the A. remigis sperm surface contains at least two glycosidases that may recognize complementary glycoconjugates on the surface of water strider eggs.
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Affiliation(s)
- Kimberly Stephens
- Department of Entomology, University of California, Riverside, CA 92521, USA
| | - Catherine D Thaler
- Department of Biology, University of California, Riverside, CA 92521, USA
| | - Richard A Cardullo
- Department of Entomology, University of California, Riverside, CA 92521, USA; Department of Biology, University of California, Riverside, CA 92521, USA.
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Makshakova ON, Semenyuk PI, Kuravsky ML, Ermakova EA, Zuev YF, Muronetz VI. Structural basis for regulation of stability and activity in glyceraldehyde-3-phosphate dehydrogenases. Differential scanning calorimetry and molecular dynamics. J Struct Biol 2015; 190:224-35. [PMID: 25869789 DOI: 10.1016/j.jsb.2015.04.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Revised: 03/30/2015] [Accepted: 04/07/2015] [Indexed: 11/19/2022]
Abstract
Tissue specific isoforms of human glyceraldehyde-3-phosphate dehydrogenase, somatic (GAPD) and sperm-specific (GAPDS), have been reported to display different levels of both stability and catalytic activity. Here we apply MD simulations to investigate molecular basis of this phenomenon. The protein is a tetramer where each subunit consists of two domains - catalytic and NAD-binding one. We demonstrated key residues responsible for intersubunit and interdomain interactions. Effect of several residues was studied by point mutations. Overall we considered three mutations (Glu96Gln, Glu244Gln and Asp311Asn) disrupting GAPDS-specific salt bridges. Comparison of calculated interaction energies with calorimetric enthalpies confirmed that intersubunit interactions were responsible for enhanced thermostability of GAPDS whereas interdomain interactions had indirect influence on intersubunit contacts. Mutation Asp311Asn was around 10Å far from the active center and corresponded to the closest natural substitution in the isoenzymes. MD simulations revealed that this residue had slight interaction with catalytic residues but influenced the hydrogen bond net and dynamics in active site. These effects can be responsible for a strong influence of this residue on catalytic activity. Overall, our results provide new insight into glyceraldehyde-3-phosphate dehydrogenase structure-function relationships and can be used for the engineering of mutant proteins with modified properties and for development of new inhibitors with indirect influence on the catalytic site.
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Affiliation(s)
- Olga N Makshakova
- Kazan Institute of Biochemistry and Biophysics, Kazan Scientific Center, Russian Academy of Sciences, Kazan, Russia.
| | - Pavel I Semenyuk
- Belozersky Institute of Physico-Chemical Biology of Lomonosov Moscow State University, Moscow, Russia
| | - Mikhail L Kuravsky
- Belozersky Institute of Physico-Chemical Biology of Lomonosov Moscow State University, Moscow, Russia
| | - Elena A Ermakova
- Kazan Institute of Biochemistry and Biophysics, Kazan Scientific Center, Russian Academy of Sciences, Kazan, Russia
| | - Yuriy F Zuev
- Kazan Institute of Biochemistry and Biophysics, Kazan Scientific Center, Russian Academy of Sciences, Kazan, Russia
| | - Vladimir I Muronetz
- Belozersky Institute of Physico-Chemical Biology of Lomonosov Moscow State University, Moscow, Russia
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Akintayo A, Légaré C, Sullivan R. Dicarbonyl L-xylulose reductase (DCXR), a "moonlighting protein" in the bovine epididymis. PLoS One 2015; 10:e0120869. [PMID: 25815750 PMCID: PMC4376396 DOI: 10.1371/journal.pone.0120869] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Accepted: 01/28/2015] [Indexed: 01/10/2023] Open
Abstract
During maturation and the acquisition of their fertilization potential, male germ cells are subjected to various sequential modifications that occur in the epididymis. Protein addition, reorganization or withdrawal, comprise some of these modifications. Dicarbonyl L-xylulose reductase (DCXR), a multifunctional protein involved in various enzymatic and protein interaction processes in different physiological systems, is one of the proteins added to spermatozoa in the epididymis. DCXR is a well-conserved protein with multiple characteristics including enzymatic activities and mediation of cell-cell interaction. In this study, we characterized the DCXR gene and protein expression in the bovine epididymis. Dicarbonyl L-xylulose reductase mRNA is differentially expressed in the caput, corpus, and cauda epididymide epithelial cells with a higher level observed in the cauda region. Tissue protein expression follows the same pattern as the corresponding mRNA expression with a cytoplasmic and apical distribution in the corpus and cauda epithelial cells, respectively. The protein can also be found with a nuclear localization in cauda epididymidis epithelial cells. Dicarbonyl L-xylulose reductase is secreted in the epididymis luminal compartment in the soluble fraction and is associated with microvesicular elements named epididymosomes. In spermatozoa, the DCXR protein was found in the cytoplasmic and membranous fractions. Expression of the DCXR protein is higher on caput spermatozoa but finally shows a weak detection in semen. These data describe DCXR in the bovine epididymis and reveal that its behavior differs from that found in humans. It seems that, in this model, the DCXR protein might have a questionable involvement in the fertilization process.
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Affiliation(s)
- Ayodélé Akintayo
- Centre de Recherche du Centre Hospitalier Universitaire (CHU) de Québec, Département d’Obstétrique, Gynécologie et Reproduction, Université Laval, Faculté de Medicine, Québec, Canada
| | - Christine Légaré
- Centre de Recherche du Centre Hospitalier Universitaire (CHU) de Québec, Département d’Obstétrique, Gynécologie et Reproduction, Université Laval, Faculté de Medicine, Québec, Canada
| | - Robert Sullivan
- Centre de Recherche du Centre Hospitalier Universitaire (CHU) de Québec, Département d’Obstétrique, Gynécologie et Reproduction, Université Laval, Faculté de Medicine, Québec, Canada
- * E-mail:
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Thirumalai T, David E, Viviyan TS, Elumalai EK. Effect of Solanum surattense seed on the oxidative potential of cauda epididymal spermatozoa. Asian Pac J Trop Biomed 2015; 2:21-3. [PMID: 23569828 DOI: 10.1016/s2221-1691(11)60183-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2011] [Revised: 06/27/2011] [Accepted: 07/03/2011] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVE To evaluate the effect of aqueous seed extract of Solanum surattense (S. surattense) on the oxidative potential of cauda epididymal spermatozoa. METHODS S. surattense seed extract was orally administered at the dosage of 10 mg/kg b.w. for 15 days, after which aspartate transferase (AST), alanine transferase (ALT), glutamate dehydrogenase (GDH), citric acid and iso-citrate dehydrogenase (ICDH) were assayed. RESULTS The activity levels of the enzymes AST and ALT, which are considered to be the androgenicity in the sperm suspension, were depleted in the extract fed rats. The activity level of the enzyme ICDH, was reduced significantly in the treated group (P<0.001). CONCLUSIONS It can be concluded that the oral administration of the aqueous seed extract of S. surattense can deplete the oxidative stress of cauda epididymal spermatozoa in albino rats.
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Affiliation(s)
- T Thirumalai
- Post Graduate and Research Department of Zoology, Voorhees College, Physiology Wing, Vellore-632 001, Tamilnadu, India
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Deng S, Fan L, Wu XY, Zhu Y, Xu KQ. [Optimization of sperm alkaline single-cell gel electrophoresis]. Zhonghua Nan Ke Xue 2015; 21:124-131. [PMID: 25796684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
OBJECTIVE To investigate the main factors that influence the results of sperm alkaline single-cell gel electrophoresis (SCGE), optimize the conditions, and standardize its procedures. METHODS Using alkaline SCGE, we detected the DNA fragments of sperm treated with different concentrations of H2O2 and determined the influences of the number of agarose gel layers, pH during DNA unwinding and electrophoresis, the time of DNA unwinding and electrophoresis, and cumulative sperm number on the results of sperm alkaline SCGE. Then we optimized the procedures, analyzed the repeatability of the optimized method, and examined 40 semen samples using the method. RESULTS Three agarose gel layers could reduce the background. The optimal pH during DNA unwinding and electrophoresis was 10, and the best times for DNA unwinding and electrophoresis were 40 min and 30 min, respectively. Fifty sperm were adequate to ensure the reliability of the results. Based on the percentage of tail DNA, the intra- and inter-assay repeatabilities of the optimized sperm alkaline SCGE were 3.12% and 7.13%, and by the DNA damage score, they were 2.38% and 6.09%, respectively. Sperm DNA fragments were significantly increased in the infertile patients with oligoasthenoteratozoospermia as compared with healthy fertile males (P <0.05). CONCLUSION The optimized sperm alkaline SCGE, highly repeatable and easy to be standardized, can be applied to the clinical detection of sperm DNA fragmentation in infertile men.
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Yan L, Guo W, Wu S, Liu J, Zhang S, Shi L, Ji G, Gu A. Genetic variants in nitric oxide synthase genes and the risk of male infertility in a Chinese population: a case-control study. PLoS One 2014; 9:e115190. [PMID: 25517965 PMCID: PMC4269448 DOI: 10.1371/journal.pone.0115190] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2014] [Accepted: 11/19/2014] [Indexed: 01/21/2023] Open
Abstract
BACKGROUND In recent years, oxidative stress has been studied extensively as a main contributing factor to male infertility. Nitric Oxide, a highly reactive free radical gas, is potentially detrimental to sperm function and sperm DNA integrity at high levels. Thus, the aim of this study was to investigate the associations between five polymorphisms in nitric oxide synthase genes (NOSs) and the risk of male infertility and sperm DNA damage as well. METHODS Genotypes were determined by the OpenArray platform. Sperm DNA fragmentation was detected using the Tdt-mediated dUTP nick-end labeling assay, and the level of 8-hydroxydeoxyguanosine (8-OHdG) in sperm DNA was measured using immunofluorescence. The adjusted odds ratio (OR) and 95% confidence interval (CI) were estimated using unconditional logistic regression. RESULTS Our results revealed a statistically significant difference between the cases and controls in both genotypic distribution (P<0.001) and allelic frequency (P = 0.021) only for the NOS3 rs1799983 SNP. Multivariate logistic regression analyses revealed that rs1799983 was associated with a borderline significantly increased risk of male infertility (GT vs. GG: adjusted OR = 1.30, 95% CI: 1.00-1.70; GT+TT vs. GG: adjusted OR = 1.34, 95% CI: 1.03-1.74; P trend = 0.020). Moreover, NOS3 rs1799983 was positively associated with higher levels of sperm DNA fragmentation (β = 0.223, P = 0.044). However, the other 4 polymorphisms (NOS1 rs2682826, NOS1 rs1047735, NOS2 rs2297518, and NOS2 rs10459953) were not found to have any apparent relationships with male infertility risk. CONCLUSIONS Of five NOS gene polymorphisms investigated in the present study, we found NOS3 rs1799983 might cause oxidative sperm DNA damage, thereby contributing to male infertility.
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Affiliation(s)
- Lifeng Yan
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology/Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Wenhui Guo
- Nanjing Institute of Environmental Sciences/Key Laboratory of Pesticide Environmental Assessment and Pollution Control, Ministry of Environmental Protection, Nanjing, China
| | - Shengmin Wu
- Nanjing Institute of Environmental Sciences/Key Laboratory of Pesticide Environmental Assessment and Pollution Control, Ministry of Environmental Protection, Nanjing, China
| | - Jining Liu
- Nanjing Institute of Environmental Sciences/Key Laboratory of Pesticide Environmental Assessment and Pollution Control, Ministry of Environmental Protection, Nanjing, China
| | - Shenghu Zhang
- Nanjing Institute of Environmental Sciences/Key Laboratory of Pesticide Environmental Assessment and Pollution Control, Ministry of Environmental Protection, Nanjing, China
| | - Lili Shi
- Nanjing Institute of Environmental Sciences/Key Laboratory of Pesticide Environmental Assessment and Pollution Control, Ministry of Environmental Protection, Nanjing, China
| | - Guixiang Ji
- Nanjing Institute of Environmental Sciences/Key Laboratory of Pesticide Environmental Assessment and Pollution Control, Ministry of Environmental Protection, Nanjing, China
| | - Aihua Gu
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology/Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, China
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Parab S, Shetty O, Gaonkar R, Balasinor N, Khole V, Parte P. HDAC6 deacetylates alpha tubulin in sperm and modulates sperm motility in Holtzman rat. Cell Tissue Res 2014; 359:665-678. [PMID: 25411052 DOI: 10.1007/s00441-014-2039-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Accepted: 10/15/2014] [Indexed: 12/29/2022]
Abstract
Histone deacetylase 6 (HDAC6) is an alpha (α)-tubulin deacetylase and its over-expression has been demonstrated to promote chemotactic cell movement. Motility in sperm is driven by the flagella, the cytoskeletal structure comprising the microtubules, which are heterodimers of α- and β-tubulins. We have hypothesized that HDAC6, by virtue of being an α-tubulin deacetylase, might modulate sperm motility. However, the presence of HDAC6 on sperm has hitherto not been reported. In this study, we have demonstrated, for the first time, the presence of HDAC6 transcript and protein in the testicular and caudal sperm of rat. We have observed a significantly overlapping expression of HDAC6 with acetyl α-tubulin (Ac α-tubulin) in the mid-piece and principal piece of sperm flagella, and the co-precipitation of α-tubulin and Ac α-tubulin together with HDAC6 and vice versa in sperm lysates. This indicates that HDAC6 interacts with α-tubulin. The HDAC6 activity of sperm, sperm motility and status of Ac α-tubulin investigated in the presence of HDAC inhibitors Trichostatin A, Tubastatin A and sodium butyrate demonstrate that HDAC6 in sperm is catalytically active and that inhibitors of HDAC6 increase acetylation and restrict sperm motility. Thus, we show that (1) active HDAC6 enzyme is present in sperm, (2) HDAC6 in sperm is able to deacetylate α-tubulin, (3) inhibition of HDAC6 results in increased Ac α-tubulin expression and (4) HDAC6 inhibition affects sperm motility. This evidence suggests that HDAC6 is involved in modulating sperm movement.
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Affiliation(s)
- Sweta Parab
- Department of Gamete Immunobiology, National Institute for Research in Reproductive Health (ICMR), Mumbai, 400012, India
| | - Omshree Shetty
- Department of Gamete Immunobiology, National Institute for Research in Reproductive Health (ICMR), Mumbai, 400012, India
| | - Reshma Gaonkar
- Department of Neuroendocrinology and Confocal Microscopy Lab, National Institute for Research in Reproductive Health (ICMR), Mumbai, 400012, India
| | - Nafisa Balasinor
- Department of Neuroendocrinology and Confocal Microscopy Lab, National Institute for Research in Reproductive Health (ICMR), Mumbai, 400012, India
| | - Vrinda Khole
- Department of Gamete Immunobiology, National Institute for Research in Reproductive Health (ICMR), Mumbai, 400012, India
| | - Priyanka Parte
- Department of Gamete Immunobiology, National Institute for Research in Reproductive Health (ICMR), Mumbai, 400012, India.
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Alavi SMH, Postlerová-Maňásková P, Hatef A, Pšenička M, Pěknicová J, Inaba K, Ciereszko A, Linhart O. Protease in sturgeon sperm and the effects of protease inhibitors on sperm motility and velocity. Fish Physiol Biochem 2014; 40:1393-1398. [PMID: 24677048 DOI: 10.1007/s10695-014-9933-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2013] [Accepted: 03/21/2014] [Indexed: 06/03/2023]
Abstract
In mammals, proteases are present in sperm acrosome and play key role in fertilization. Sturgeon sperm has an acrosome, but its physiology, biochemistry, and potential role in fertilization are unknown. In the present study, we have observed high protease activity in acidic extract of intact sperm compared to that of seminal plasma in sterlet (Acipenser ruthenus). The protease activity was decreased and increased in acidic extract of motility-activated sperm and in the activation medium, respectively. Molecular analysis revealed total protease and serine (acrosin) protease activities in sperm acidic extract which was accumulated in a protein band with relative molecular mass of 35 kDa. Immunoelectron microscopy using an affinity-purified polyclonal antibody for boar acrosin localized the protease at the acrosome region. Moreover, initiation of sperm motility was inhibited after activation in the presence of inhibitors for both trypsin-like and chymotrypsin-like proteases, while the effects of protease inhibitors on sperm velocity were uncertain. Our results indicate similarities in physiology and biochemistry of acrosome between sturgeon and mammals and suggest potential role of protease in the initiation of sperm motility in sturgeon.
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Affiliation(s)
- Sayyed Mohammad Hadi Alavi
- Faculty of Fisheries and Protection of Waters, Research Institute of Fish Culture and Hydrobiology, University of South Bohemia, 389 25, Vodňany, Czech Republic,
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Jun HJ, Roy J, Smith TB, Wood LB, Lane K, Woolfenden S, Punko D, Bronson RT, Haigis KM, Breton S, Charest A. ROS1 signaling regulates epithelial differentiation in the epididymis. Endocrinology 2014; 155:3661-73. [PMID: 24971615 PMCID: PMC4138574 DOI: 10.1210/en.2014-1341] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The initial segment (IS) of the epididymis plays an essential role in male fertility. The IS epithelium is undifferentiated and nonfunctional at birth. Prior to puberty, the epithelium undergoes differentiation that leads to the formation of a fully functional organ. However, the mechanistic details of this program are not well understood. To explore this further, we used genetic engineering to create a kinase dead allele of the ROS1 receptor tyrosine kinase in mice and studied the effects of ROS1 tyrosine kinase activity on the differentiation of the IS epithelium. We show that the expression and activation of ROS1 coincides with the onset of differentiation and is exclusively located in the IS of the maturing and adult mouse epididymides. Here we demonstrate that the differentiation of the IS is dependent on the kinase activity of ROS1 and its downstream effector MEK1/2-ERK1/2 signaling axis. Using genetic engineering, we show that germ line ablation of ROS1 kinase activity leads to a failure of the IS epithelium to differentiate, and as a consequence sperm maturation and infertility were dramatically perturbed. Pharmacological inhibition of ROS1 kinase activity in the developing epididymis, however, only delayed differentiation transiently and did not result in infertility. Our results demonstrate that ROS1 kinase activity and the ensuing MEK1/2-ERK1/2 signaling are necessary for the postnatal development of the IS epithelium and that a sustained ablation of ROS1 kinase activity within the critical window of terminal differentiation abrogate the function of the epididymis and leads to sterility.
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Affiliation(s)
- Hyun Jung Jun
- Molecular Oncology Research Institute (H.J.J., S.W., D.P., A.C), Tufts Medical Center, Boston, Massachusetts 02111; Center for Cancer Research (K.L., A.C.), Massachusetts Institute of Technology, Cambridge, Massachusetts 02139; Program in Membrane Biology and Division of Nephrology and Center for Systems Biology (J.R., T.B.S., S.B.) and Molecular Pathology Unit (L.B.W., K.M.H.), Massachusetts General Hospital, Boston, Massachusetts 02114; Department of Pathology (R.T.B), Harvard Medical School, Boston, Massachusetts 02115; and Department of Neurosurgery and Program in Genetics (A.C), Tufts University School of Medicine, Boston, Massachusetts 02111
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Shiba K, Inaba K. Distinct roles of soluble and transmembrane adenylyl cyclases in the regulation of flagellar motility in Ciona sperm. Int J Mol Sci 2014; 15:13192-208. [PMID: 25073090 PMCID: PMC4159788 DOI: 10.3390/ijms150813192] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Revised: 05/06/2014] [Accepted: 07/11/2014] [Indexed: 12/31/2022] Open
Abstract
Adenylyl cyclase (AC) is a key enzyme that synthesizes cyclic AMP (cAMP) at the onset of the signaling pathway to activate sperm motility. Here, we showed that both transmembrane AC (tmAC) and soluble AC (sAC) are distinctly involved in the regulation of sperm motility in the ascidian Ciona intestinalis. A tmAC inhibitor blocked both cAMP synthesis and the activation of sperm motility induced by the egg factor sperm activating and attracting factor (SAAF), as well as those induced by theophylline, an inhibitor of phoshodiesterase. It also significantly inhibited cAMP-dependent phosphorylation of a set of proteins at motility activation. On the other hand, a sAC inhibitor does not affect on SAAF-induced transient increase of cAMP, motility activation or protein phosphorylation, but it reduced swimming velocity to half in theophylline-induced sperm. A sAC inhibitor KH-7 induced circular swimming trajectory with smaller diameter and significantly suppressed chemotaxis of sperm to SAAF. These results suggest that tmAC is involved in the basic mechanism for motility activation through cAMP-dependent protein phosphorylation, whereas sAC plays distinct roles in increase of flagellar beat frequency and in the Ca2+-dependent chemotactic movement of sperm.
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Affiliation(s)
- Kogiku Shiba
- Shimoda Marine Research Center, University of Tsukuba, Shimoda 5-10-1, Shizuoka 415-0025, Japan.
| | - Kazuo Inaba
- Shimoda Marine Research Center, University of Tsukuba, Shimoda 5-10-1, Shizuoka 415-0025, Japan.
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Huang X, Zhuang P, Zhang L, Zhao F, Liu J, Feng G, Zhang T. Effects of cryopreservation on motility characteristics and enzyme activity of sperm in a Chinese fish Nibea albiflora. Cryo Letters 2014; 35:267-276. [PMID: 25282493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
BACKGROUND Growing evidence suggests that among the causes which deteriorate qualitative and functional characteristics of sperm after freezing and thawing, there are those linked to decrease of sperm motility and release of various enzymes in the cells and seminal plasma. OBJECTIVE In the present study, the motility, fertilization and enzyme activity of sperm were analyzed after cryopreservation. MATERIALS AND METHODS Computer-assisted sperm motility analysis (CASA) was used to evaluate the effect of cryopreservation on sperm motility of Nibea albiflora. RESULTS The activities of total adenosine triphosphatase (ATPase), creatine kinase (CK), succinate dehydrogenase (SDH), lactate dehydrogenase (LDH), superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GSH-Px) and glutathione reductase (GR) in fresh and frozen seminal plasma and spermatozoa were measured respectively. Cryopreservation led to a decline in the percentage of motile sperm, moreover, other parameters of sperm motion, curvilinear and straight line velocities, linearity were changed observably (p < 0.05), the fertilizing capacity of post-thaw sperm was lower than that of the fresh sperm significantly. After cryopreservation, the activities of total ATPase, CK, SDH, LDH, SOD, CAT and GSH-Px increased in seminal plasma and decreased in spermatozoa respectively, but GR activity varied contrarily, GR activity dropped in seminal plasma and increased in spermatozoa. CONCLUSION Cryopreservation had significant effects on the motility characteristics, fertilization ability and enzyme activity of the sperm of Nibea albiflora.
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Affiliation(s)
- X Huang
- East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of East China Sea and Oceanic Fishery Resources Exploitation and Utilization, MOA;Shanghai, China
| | - P Zhuang
- East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of East China Sea and Oceanic Fishery Resources Exploitation and Utilization, MOA;Shanghai, China.
| | - L Zhang
- East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of East China Sea and Oceanic Fishery Resources Exploitation and Utilization, MOA;Shanghai, China
| | - F Zhao
- East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of East China Sea and Oceanic Fishery Resources Exploitation and Utilization, MOA;Shanghai, China
| | - J Liu
- East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of East China Sea and Oceanic Fishery Resources Exploitation and Utilization, MOA;Shanghai, China
| | - G Feng
- East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of East China Sea and Oceanic Fishery Resources Exploitation and Utilization, MOA;Shanghai, China
| | - T Zhang
- East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of East China Sea and Oceanic Fishery Resources Exploitation and Utilization, MOA;Shanghai, China
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Shpakov AO, Derkach KV. [The functional role of membrane-bound adenylyl cyclases and the receptors and G-proteins coupled with them in regulation of spermatozoa fertility]. Zh Evol Biokhim Fiziol 2014; 50:255-268. [PMID: 25775861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The cAMP-dependent signaling pathways play a crucial role in regulation of spermatozoa fertility. The cAMP synthesis in spermatozoa is carried out both by soluble and by transmembrane (membrane-bound) forms of adenylyl cyclase (AC). For the last years, numerous data have been appeared on the presence of a wide variety of membrane-bound AC isoforms in spermatozoa at different stages of their maturation and the regulation of the enzymes by hormones and hormone-like substances through G protein-coupled receptors (GPCR). In spermatozoa, functioning as GPCR agonists may be adenosine, biogenic amines, peptide hormones, and odorants. The study of structural-functional organization and regulatory properties of the AC signaling system in spermatozoa is of great practical importance for reproductive technology, as the membrane-bound AC forms and the signaling cascades coupled with them are involved in controlling processes, such as chemotaxis and motility of spermatozoa, their capability for capacitation and acrosomal reaction. In this review the data on the functioning and the role of AC signaling system in spermatozoa of human and vertebrates are summarizes and analyzed, and the achievements and unresolved problems in this area are discussed.
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Siva AB, Panneerdoss S, Sailasree P, Singh DK, Kameshwari DB, Shivaji S. Inhibiting sperm pyruvate dehydrogenase complex and its E3 subunit, dihydrolipoamide dehydrogenase affects fertilization in Syrian hamsters. PLoS One 2014; 9:e97916. [PMID: 24852961 PMCID: PMC4031208 DOI: 10.1371/journal.pone.0097916] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2012] [Accepted: 04/26/2014] [Indexed: 12/20/2022] Open
Abstract
Background/Aims The importance of sperm capacitation for mammalian fertilization has been confirmed in the present study via sperm metabolism. Involvement of the metabolic enzymes pyruvate dehydrogenase complex (PDHc) and its E3 subunit, dihydrolipoamide dehydrogenase (DLD) in hamster in vitro fertilization (IVF) via in vitro sperm capacitation is being proposed through regulation of sperm intracellular lactate, pH and calcium. Methodology and Principal Findings Capacitated hamster spermatozoa were allowed to fertilize hamster oocytes in vitro which were then assessed for fertilization, microscopically. PDHc/DLD was inhibited by the use of the specific DLD-inhibitor, MICA (5-methoxyindole-2-carboxylic acid). Oocytes fertilized with MICA-treated (MT) [and thus PDHc/DLD-inhibited] spermatozoa showed defective fertilization where 2nd polar body release and pronuclei formation were not observed. Defective fertilization was attributable to capacitation failure owing to high lactate and low intracellular pH and calcium in MT-spermatozoa during capacitation. Moreover, this defect could be overcome by alkalinizing spermatozoa, before fertilization. Increasing intracellular calcium in spermatozoa pre-IVF and in defectively-fertilized oocytes, post-fertilization rescued the arrest seen, suggesting the role of intracellular calcium from either of the gametes in fertilization. Parallel experiments carried out with control spermatozoa capacitated in medium with low extracellular pH or high lactate substantiated the necessity of optimal sperm intracellular lactate levels, intracellular pH and calcium during sperm capacitation, for proper fertilization. Conclusions This study confirms the importance of pyruvate/lactate metabolism in capacitating spermatozoa for successful fertilization, besides revealing for the first time the importance of sperm PDHc/ DLD in fertilization, via the modulation of sperm intracellular lactate, pH and calcium during capacitation. In addition, the observations made in the IVF studies in hamsters suggest that capacitation failures could be a plausible cause of unsuccessful fertilization encountered during human assisted reproductive technologies, like IVF and ICSI. Our studies indicate a role of sperm capacitation in the post-penetration events during fertilization.
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Affiliation(s)
- Archana B Siva
- Centre for Cellular and Molecular Biology (Council of Scientific and Industrial Research), Hyderabad, India
| | - Subbarayalu Panneerdoss
- Centre for Cellular and Molecular Biology (Council of Scientific and Industrial Research), Hyderabad, India
| | - Purnima Sailasree
- Centre for Cellular and Molecular Biology (Council of Scientific and Industrial Research), Hyderabad, India
| | - Durgesh K Singh
- Centre for Cellular and Molecular Biology (Council of Scientific and Industrial Research), Hyderabad, India
| | - Duvurri B Kameshwari
- Centre for Cellular and Molecular Biology (Council of Scientific and Industrial Research), Hyderabad, India
| | - Sisinthy Shivaji
- Centre for Cellular and Molecular Biology (Council of Scientific and Industrial Research), Hyderabad, India
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Niederberger C. Re: epididymal specific, selenium-independent GPX5 protects cells from oxidative stress-induced lipid peroxidation and DNA mutation. J Urol 2014; 191:1355. [PMID: 24745523 DOI: 10.1016/j.juro.2014.02.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Zhang WN, Bai DP, Lin XY, Chen QX, Huang XH, Huang YF. Inactivation kinetics of formaldehyde on N-acetyl-β-D-glucosaminidase from Nile tilapia (Oreochromis niloticus). Fish Physiol Biochem 2014; 40:561-569. [PMID: 24037273 DOI: 10.1007/s10695-013-9866-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2013] [Accepted: 09/10/2013] [Indexed: 06/02/2023]
Abstract
Formaldehyde is a widely used sanitizer in aquaculture in China, while the appropriate concentration is not available to be used effectively and without damage to tilapia much less to its reproductive function. N-acetyl-β-D-glucosaminidase (EC 3.2.1.52, NAGase), hydrolyzing the oligomers of N-acetyl-β-D-glucosamine into monomer, is proved to be correlated with reproduction of male animals. In this paper, NAGase from spermary of tilapia was chosen as the material to study the effects of formaldehyde on its activity in order to further investigate the effects of formaldehyde use on tilapia reproduction. The results showed the relationship between the residual enzyme activity and the concentration of formaldehyde was concentration dependent, and the IC50 value was estimated to be 3.2 ± 0.1 %. Appropriate concentration of formaldehyde leaded to competitive reversible inhibition on tilapia NAGase. Moreover, formaldehyde could reduce the thermal and pH stability of the enzyme. The inactivation kinetics of formaldehyde on the enzyme was studied using the kinetic method of substrate reaction. The inactivation model was setup, and the rate constants were determined. The results showed that the inactivation of formaldehyde on tilapia NAGase was a slow, reversible reaction with partially residual activity. The results will give some basis to determine the concentration of formaldehyde used in tilapia culture.
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Affiliation(s)
- Wei-Ni Zhang
- University Key Lab for Integrated Chinese Traditional and Western Veterinary Medicine and Animal Healthcare in Fujian Province, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
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Shpakov AO, Derkach KV. [Soluble forms of adenylyl cyclases of spermatozoa]. Tsitologiia 2014; 56:5-13. [PMID: 25509140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Soluble (cytosolic) forms of adenylyl cyclases (sAC), the enzymes catalyzing the conversion of ATP to the second messenger cAMP, play a key role in the regulation of spermatogenesis, control maturation of spermatozoa in the epididymis and their capacitation in the female genital tract, which determines their ability to fertilize. In the last years the significant progress was made in the study of the structural and functional organization and regulatory properties of sAC, their localization in the spermatozoa as well as in the investigation of intracellular cascades functionally coupled with sAC, including protein kinase A, cAMP-dependent phosphodiesterase, non-receptor tyrosine kinases, tyrosine phosphatases, transcription factors of CREB/CREM-family. The molecular mechanisms involved in the regulation of the intracellular concentration of bicarbonate anions, the main endogenous activators of sAC, were deciphered. Many evidences were obtained that the decrease of functional activity of sAC and signaling cascades and effector proteins coupled to it, as well as bicarbonate anion transporters lead to disturbances of spermatogenesis. As a consequence, the development of approaches for controlling the activity of sAC in spermatozoa is one of the priority ways to treat dysfunctions of the male reproductive system. Present review is devoted to advances in the study of soluble forms of AC and functionally coupled to them signaling cascades and effector proteins in the spermatozoa, as well as to the unresolved issues in this area.
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Liu Z, Wang B, He R, Zhao Y, Miao L. Calcium signaling and the MAPK cascade are required for sperm activation in Caenorhabditis elegans. Biochim Biophys Acta 2013; 1843:299-308. [PMID: 24239721 DOI: 10.1016/j.bbamcr.2013.11.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2013] [Revised: 10/28/2013] [Accepted: 11/05/2013] [Indexed: 12/20/2022]
Abstract
In nematode, sperm activation (or spermiogenesis), a process in which the symmetric and non-motile spermatids transform into polarized and crawling spermatozoa, is critical for sperm cells to acquire fertilizing competence. SPE-8 dependent and SPE-8 independent pathways function redundantly during sperm activation in both males and hermaphrodites of Caenorhabditis elegans. However, the downstream signaling for both pathways remains unclear. Here we show that calcium signaling and the MAPK cascade are required for both SPE-8 dependent and SPE-8 independent sperm activation, implying that both pathways share common downstream signaling components during sperm activation. We demonstrate that activation of the MAPK cascade is sufficient to activate spermatids derived from either wild-type or spe-8 group mutant males and that activation of the MAPK cascade bypasses the requirement of calcium signal to induce sperm activation, indicating that the MAPK cascade functions downstream of or parallel with the calcium signaling during sperm activation. Interestingly, the persistent activation of MAPK in activated spermatozoa inhibits Major Sperm Protein (MSP)-based cytoskeleton dynamics. We demonstrate that MAPK plays dual roles in promoting pseudopod extension during sperm activation but also blocking the MSP-based, amoeboid motility of the spermatozoa. Thus, though nematode sperm are crawling cells, morphologically distinct from flagellated sperm, and the molecular machinery for motility of amoeboid and flagellated sperm is different, both types of sperm might utilize conserved signaling pathways to modulate sperm maturation.
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Affiliation(s)
- Zhiyu Liu
- Laboratory of Noncoding RNA, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Bin Wang
- Laboratory of Noncoding RNA, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
| | - Ruijun He
- Laboratory of Noncoding RNA, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
| | - Yanmei Zhao
- Laboratory of Noncoding RNA, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
| | - Long Miao
- Laboratory of Noncoding RNA, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China.
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