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López-González I, Oseguera-López I, Castillo R, Darszon A. Influence of extracellular ATP on mammalian sperm physiology. Reprod Fertil Dev 2024; 36:RD23227. [PMID: 38870344 DOI: 10.1071/rd23227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Accepted: 05/23/2024] [Indexed: 06/15/2024] Open
Abstract
In addition to its central role in cellular metabolism, adenosine 5'-triphosphate (ATP) is an important extracellular signalling molecule involved in various physiological processes. In reproduction, extracellular ATP participates in both autocrine and paracrine paths regulating gametogenesis, gamete maturation and fertilisation. This review focusses on how extracellular ATP modulates sperm physiology with emphasis on the mammalian acrosome reaction. The presence of extracellular ATP in the reproductive tract is primarily determined by the ion channels and transporters that influence its movement within the cells comprising the tract. The main targets of extracellular ATP in spermatozoa are its own transporters, particularly species-specific sperm purinergic receptors. We also discuss notable phenotypes from knock-out mouse models and human Mendelian inheritance related to ATP release mechanisms, along with immunological, proteomic, and functional observations regarding sperm purinergic receptors and their involvement in sperm signalling.
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Affiliation(s)
- I López-González
- Departamento de Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Av. Universidad # 2001, Col. Chamilpa, Cuernavaca, Morelos CP 62210, México
| | - I Oseguera-López
- Departamento de Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Av. Universidad # 2001, Col. Chamilpa, Cuernavaca, Morelos CP 62210, México
| | - R Castillo
- Departamento de Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Av. Universidad # 2001, Col. Chamilpa, Cuernavaca, Morelos CP 62210, México
| | - A Darszon
- Departamento de Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Av. Universidad # 2001, Col. Chamilpa, Cuernavaca, Morelos CP 62210, México
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2
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Balestrini PA, Sulzyk V, Jabloñski M, Schiavi-Ehrenhaus LJ, González SN, Ferreira JJ, Gómez-Elías MD, Pomata P, Luque GM, Krapf D, Cuasnicu PS, Santi CM, Buffone MG. Membrane potential hyperpolarization: a critical factor in acrosomal exocytosis and fertilization in sperm within the female reproductive tract. Front Cell Dev Biol 2024; 12:1386980. [PMID: 38803392 PMCID: PMC11128623 DOI: 10.3389/fcell.2024.1386980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Accepted: 04/24/2024] [Indexed: 05/29/2024] Open
Abstract
Hyperpolarization of the membrane potential (Em), a phenomenon regulated by SLO3 channels, stands as a central feature in sperm capacitation-a crucial process conferring upon sperm the ability to fertilize the oocyte. In vitro studies demonstrated that Em hyperpolarization plays a pivotal role in facilitating the mechanisms necessary for the development of hyperactivated motility (HA) and acrosomal exocytosis (AE) occurrence. Nevertheless, the physiological significance of sperm Em within the female reproductive tract remains unexplored. As an approach to this question, we studied sperm migration and AE incidence within the oviduct in the absence of Em hyperpolarization using a novel mouse model established by crossbreeding of SLO3 knock-out (KO) mice with EGFP/DsRed2 mice. Sperm from this model displays impaired HA and AE in vitro. Interestingly, examination of the female reproductive tract shows that SLO3 KO sperm can reach the ampulla, mirroring the quantity of sperm observed in wild-type (WT) counterparts, supporting that the HA needed to reach the fertilization site is not affected. However, a noteworthy distinction emerges-unlike WT sperm, the majority of SLO3 KO sperm arrive at the ampulla with their acrosomes still intact. Of the few SLO3 KO sperm that do manage to reach the oocytes within this location, fertilization does not occur, as indicated by the absence of sperm pronuclei in the MII-oocytes recovered post-mating. In vitro, SLO3 KO sperm fail to penetrate the ZP and fuse with the oocytes. Collectively, these results underscore the vital role of Em hyperpolarization in AE and fertilization within their physiological context, while also revealing that Em is not a prerequisite for the development of the HA motility, essential for sperm migration through the female tract to the ampulla.
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Affiliation(s)
- Paula A. Balestrini
- Instituto de Biología y Medicina Experimental (IByME)-Consejo Nacional de Investigaciones Científicas y Tícnicas, Buenos Aires, Argentina
| | - Valeria Sulzyk
- Instituto de Biología y Medicina Experimental (IByME)-Consejo Nacional de Investigaciones Científicas y Tícnicas, Buenos Aires, Argentina
| | - Martina Jabloñski
- Instituto de Biología y Medicina Experimental (IByME)-Consejo Nacional de Investigaciones Científicas y Tícnicas, Buenos Aires, Argentina
| | - Liza J. Schiavi-Ehrenhaus
- Instituto de Biología y Medicina Experimental (IByME)-Consejo Nacional de Investigaciones Científicas y Tícnicas, Buenos Aires, Argentina
| | - Soledad N. González
- Instituto de Biología y Medicina Experimental (IByME)-Consejo Nacional de Investigaciones Científicas y Tícnicas, Buenos Aires, Argentina
| | - Juan J. Ferreira
- Department of OB/GYN, Washington University School of Medicine, Saint Louis, MO, United States
| | - Matías D. Gómez-Elías
- Instituto de Biología y Medicina Experimental (IByME)-Consejo Nacional de Investigaciones Científicas y Tícnicas, Buenos Aires, Argentina
| | - Pablo Pomata
- Instituto de Biología y Medicina Experimental (IByME)-Consejo Nacional de Investigaciones Científicas y Tícnicas, Buenos Aires, Argentina
| | - Guillermina M. Luque
- Instituto de Biología y Medicina Experimental (IByME)-Consejo Nacional de Investigaciones Científicas y Tícnicas, Buenos Aires, Argentina
| | - Dario Krapf
- Instituto de Biología Molecular y Celular de Rosario, Consejo Nacional de Investigaciones Científicas y Técnicas–Universidad Nacional de Rosario, Rosario, Santa Fe, Argentina
| | - Patricia S. Cuasnicu
- Instituto de Biología y Medicina Experimental (IByME)-Consejo Nacional de Investigaciones Científicas y Tícnicas, Buenos Aires, Argentina
| | - Celia M. Santi
- Department of OB/GYN, Washington University School of Medicine, Saint Louis, MO, United States
| | - Mariano G. Buffone
- Instituto de Biología y Medicina Experimental (IByME)-Consejo Nacional de Investigaciones Científicas y Tícnicas, Buenos Aires, Argentina
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3
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Rosenhouse-Dantsker A, Gazgalis D, Logothetis DE. PI(4,5)P 2 and Cholesterol: Synthesis, Regulation, and Functions. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2023; 1422:3-59. [PMID: 36988876 DOI: 10.1007/978-3-031-21547-6_1] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
Abstract
Phosphatidylinositol 4,5-bisphosphate (PI(4,5)P2) is the most abundant membrane phosphoinositide and cholesterol is an essential component of the plasma membrane (PM). Both lipids play key roles in a variety of cellular functions including as signaling molecules and major regulators of protein function. This chapter provides an overview of these two important lipids. Starting from a brief description of their structure, synthesis, and regulation, the chapter continues to describe the primary functions and signaling processes in which PI(4,5)P2 and cholesterol are involved. While PI(4,5)P2 and cholesterol can act independently, they often act in concert or affect each other's impact. The chapters in this volume on "Cholesterol and PI(4,5)P2 in Vital Biological Functions: From Coexistence to Crosstalk" focus on the emerging relationship between cholesterol and PI(4,5)P2 in a variety of biological systems and processes. In this chapter, the next section provides examples from the ion channel field demonstrating that PI(4,5)P2 and cholesterol can act via common mechanisms. The chapter ends with a discussion of future directions.
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Affiliation(s)
| | - Dimitris Gazgalis
- Department of Pharmaceutical Sciences, School of Pharmacy and Pharmaceutical Sciences, Bouvé College of Health Sciences, Northeastern University, Boston, MA, USA
| | - Diomedes E Logothetis
- Department of Pharmaceutical Sciences, School of Pharmacy and Pharmaceutical Sciences, Bouvé College of Health Sciences, Northeastern University, Boston, MA, USA
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4
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Skerrett-Byrne DA, Anderson AL, Bromfield EG, Bernstein IR, Mulhall JE, Schjenken JE, Dun MD, Humphrey SJ, Nixon B. Global profiling of the proteomic changes associated with the post-testicular maturation of mouse spermatozoa. Cell Rep 2022; 41:111655. [DOI: 10.1016/j.celrep.2022.111655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 06/15/2022] [Accepted: 10/20/2022] [Indexed: 11/17/2022] Open
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5
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Carro M, Luquez JM, Peñalva DA, Buschiazzo J, Hozbor FA, Furland NE. PUFA-rich phospholipid classes and subclasses of ram spermatozoa are unevenly affected by cryopreservation with a soybean lecithin-based extender. Theriogenology 2022; 186:122-134. [PMID: 35468546 DOI: 10.1016/j.theriogenology.2022.03.035] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 03/15/2022] [Accepted: 03/29/2022] [Indexed: 01/10/2023]
Abstract
Cryopreservation is known to affect spermatozoa structure and function. Ram sperm are among the most highly sensitive mammalian gametes to freezing, due to their lipid composition, which limit their efficiency in artificial insemination programs. The aim of this study was to investigate the effects of cryopreservation with a chemically defined soybean lecithin-based extender on ram spermatozoa functionality on the one hand, and quantifiable changes in lipid and fatty acid profile on the other. Freeze-thawing decreased sperm quality, as indicated by post-thaw parameters related to membrane integrity, mitochondrial viability and sperm motility. The most relevant lipid change after cryopreservation was a remarkable loss of all glycerophospholipids containing 22:6n-3. Species of sphingomyelin with very long chain polyunsaturated fatty acids (VLC-PUFA), that are exclusively located in the sperm head, where responsible of its reduction after cryostorage. Freezing caused a reduction in mitochondrial function, which was confirmed by significantly decreased of mitochondrial membrane potential and by the generation of 4-HNE. Mitochondria damage was accompanied by a loss in cardiolipin with 18:2n-6 and phosphatidylethanolamine with 20:4n-6, two well-known lipids that are critical components for mitochondrial membrane functionality. Loss of sterols after cryopreservation occurred along with a decrease in the order of sperm membrane lipids. Our research provides new insights on deleterious effects of cryopreservation on PUFA-rich phospholipids of ram sperm and highlight their importance as biomarkers of ultrastructural, biochemical and functional damage that ram spermatozoa undergo after freezing-thawing.
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Affiliation(s)
- M Carro
- Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS Balcarce), Instituto Nacional de Tecnología Agropecuaria (INTA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Balcarce, Argentina
| | - J M Luquez
- Instituto de Investigaciones Bioquímicas de Bahía Blanca, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) y Universidad Nacional del Sur (UNS), 8000, Bahía Blanca, Argentina
| | - D A Peñalva
- Instituto de Investigaciones Bioquímicas de Bahía Blanca, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) y Universidad Nacional del Sur (UNS), 8000, Bahía Blanca, Argentina
| | - J Buschiazzo
- Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS Balcarce), Instituto Nacional de Tecnología Agropecuaria (INTA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Balcarce, Argentina
| | - F A Hozbor
- Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS Balcarce), Instituto Nacional de Tecnología Agropecuaria (INTA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Balcarce, Argentina
| | - N E Furland
- Instituto de Investigaciones Bioquímicas de Bahía Blanca, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) y Universidad Nacional del Sur (UNS), 8000, Bahía Blanca, Argentina.
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6
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LIM Kinases, Promising but Reluctant Therapeutic Targets: Chemistry and Preclinical Validation In Vivo. Cells 2022; 11:cells11132090. [PMID: 35805176 PMCID: PMC9265711 DOI: 10.3390/cells11132090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 06/27/2022] [Accepted: 06/29/2022] [Indexed: 12/03/2022] Open
Abstract
LIM Kinases are important actors in the regulation of cytoskeleton dynamics by controlling microtubule and actin filament turnover. The signaling pathways involving LIM kinases for actin filament remodeling are well established. They are downstream effectors of small G proteins of the Rho-GTPases family and have become promising targets for the treatment of several major diseases because of their position at the lower end of these signaling cascades. Cofilin, which depolymerizes actin filaments, is the best-known substrate of these enzymes. The phosphorylation of cofilin to its inactive form by LIM kinases avoids actin filament depolymerization. The balance between phosphorylated and non-phosphorylated cofilin is thought to play an important role in tumor cell invasion and metastasis. Since 2006, many small molecules have been developed for LIMK inhibition, and in this review article, we will discuss the structure–activity relationships of the few inhibitor families that have been tested in vivo on different pathological models.
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7
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Schiavi-Ehrenhaus LJ, Romarowski A, Jabloñski M, Krapf D, Luque GM, Buffone MG. The early molecular events leading to COFILIN phosphorylation during mouse sperm capacitation are essential for acrosomal exocytosis. J Biol Chem 2022; 298:101988. [PMID: 35487245 PMCID: PMC9142561 DOI: 10.1016/j.jbc.2022.101988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 04/18/2022] [Accepted: 04/20/2022] [Indexed: 12/03/2022] Open
Abstract
The actin cytoskeleton reorganization during sperm capacitation is essential for the occurrence of acrosomal exocytosis (AR) in several mammalian species. Here, we demonstrate that in mouse sperm, within the first minutes of exposure upon capacitating conditions, the activity of RHOA/C and RAC1 is essential for LIMK1 and COFILIN phosphorylation. However, we observed that the signaling pathway involving RAC1 and PAK4 is the main player in controlling actin polymerization in the sperm head necessary for the occurrence of AR. Moreover, we show that the transient phosphorylation of COFILIN is also influenced by the Slingshot family of protein phosphatases (SSH1). The activity of SSH1 is regulated by the dual action of two pathways. On one hand, RHOA/C and RAC1 activity promotes SSH1 phosphorylation (inactivation). On the other hand, the activating dephosphorylation is driven by okadaic acid-sensitive phosphatases. This regulatory mechanism is independent of the commonly observed activating mechanisms involving PP2B and emerges as a new finely tuned modulation that is, so far, exclusively observed in mouse sperm. However, persistent phosphorylation of COFILIN by SSH1 inhibition or okadaic acid did not altered actin polymerization and the AR. Altogether, our results highlight the role of small GTPases in modulating actin dynamics required for AR.
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Affiliation(s)
- Liza J Schiavi-Ehrenhaus
- Instituto de Biología y Medicina Experimental, Consejo Nacional de Investigaciones Científicas y Técnicas (IBYME-CONICET), Buenos Aires, Argentina
| | - Ana Romarowski
- Department of Veterinary and Animal Science, University of Massachusetts, Amherst, Massachusetts, USA
| | - Martina Jabloñski
- Instituto de Biología y Medicina Experimental, Consejo Nacional de Investigaciones Científicas y Técnicas (IBYME-CONICET), Buenos Aires, Argentina
| | - Darío Krapf
- Instituto de Biología Molecular y Celular de Rosario (IBR), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Universidad Nacional de Rosario (UNR), Rosario, Argentina
| | - Guillermina M Luque
- Instituto de Biología y Medicina Experimental, Consejo Nacional de Investigaciones Científicas y Técnicas (IBYME-CONICET), Buenos Aires, Argentina.
| | - Mariano G Buffone
- Instituto de Biología y Medicina Experimental, Consejo Nacional de Investigaciones Científicas y Técnicas (IBYME-CONICET), Buenos Aires, Argentina.
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8
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Jiao X, Wang B, Yang L, Zhao Q, Zhang M, Liu X, Zhou C, Wang R, Chen H, Wang J, Ren Y, Liu P. FMNL2 suppresses cell migration and invasion of breast cancer: a reduction of cytoplasmic p27 via RhoA/LIMK/Cofilin pathway. Cell Death Dis 2022; 8:155. [PMID: 35379791 PMCID: PMC8980084 DOI: 10.1038/s41420-022-00964-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 03/03/2022] [Accepted: 03/17/2022] [Indexed: 11/24/2022]
Abstract
Formin-like protein 2 (FMNL2) belongs to a highly conserved family of cytoskeletal remodeling proteins that have been reported to be implicated in various actin-dependent physiological and cancer-associated processes. In this study, we mainly investigated the effects of FMNL2 on breast cancer cell migration and invasion, and the underlying mechanisms involved. We found that FMNL2 reduced cell migration and invasion of breast cancer in vitro and in vivo. Further, FMNL2 disrupted actin cytoskeleton rearrangement and hampered the RhoA/LIMK/Cofilin pathway in breast cancer cells. Critically, both Rho inhibitor ZOL and LIMK inhibitor BMS3 significantly abrogated these migration-promoting effects in FMNL2-silencing MDA-MB-231 and BT549 cells. RhoA/LIMK/Cofilin pathway was involved in FMNL2 silencing-induced actin cytoskeleton rearrangement in MDA-MB-231 and BT549 cells. More importantly, cytoplasmic p27 promoted FMNL2-mediated cell migration and invasion through RhoA/LIMK/Cofilin pathway in MCF7 and MDA-MB-231 cells. In addition, the expression and prognosis of FMNL2 were associated with ER in breast cancer. Furthermore, ERα overexpression reduced the protein levels of FMNL2 in breast cancer cells, which were reversed by MG132. In conclusion, FMNL2 suppressed cell migration and invasion of breast cancer by inhibiting RhoA/LIMK/Cofilin pathway through a reduction of cytoplasmic p27. This finding implies that the interference of FMNL2-mediated RhoA/LIMK/Cofilin pathway involving the cytoplasmic p27 may be a promising strategy for ameliorating breast cancer metastasis and prognosis.
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Affiliation(s)
- Xinyan Jiao
- Center for Translational Medicine, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, P.R. China.,Key Laboratory for Tumor Precision Medicine of Shaanxi Province, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, P.R. China
| | - Bo Wang
- Center for Translational Medicine, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, P.R. China.,Key Laboratory for Tumor Precision Medicine of Shaanxi Province, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, P.R. China
| | - Lu Yang
- Center for Translational Medicine, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, P.R. China.,Key Laboratory for Tumor Precision Medicine of Shaanxi Province, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, P.R. China
| | - Qingbin Zhao
- Department of Geratology, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, P.R. China
| | - Miao Zhang
- Center for Translational Medicine, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, P.R. China.,Key Laboratory for Tumor Precision Medicine of Shaanxi Province, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, P.R. China
| | - Xiaoxu Liu
- Department of Breast Surgery, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, P.R. China
| | - Can Zhou
- Department of Breast Surgery, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, P.R. China
| | - Ruiqi Wang
- Center for Translational Medicine, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, P.R. China.,Key Laboratory for Tumor Precision Medicine of Shaanxi Province, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, P.R. China
| | - He Chen
- Center for Translational Medicine, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, P.R. China.,Key Laboratory for Tumor Precision Medicine of Shaanxi Province, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, P.R. China
| | - Jichang Wang
- Center for Translational Medicine, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, P.R. China.,Department of Vascular Surgery, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, P.R. China
| | - Yu Ren
- Department of Breast Surgery, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, P.R. China.
| | - Peijun Liu
- Center for Translational Medicine, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, P.R. China. .,Key Laboratory for Tumor Precision Medicine of Shaanxi Province, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, P.R. China.
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9
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Ribba AS, Fraboulet S, Sadoul K, Lafanechère L. The Role of LIM Kinases during Development: A Lens to Get a Glimpse of Their Implication in Pathologies. Cells 2022; 11:cells11030403. [PMID: 35159213 PMCID: PMC8834001 DOI: 10.3390/cells11030403] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 01/18/2022] [Accepted: 01/22/2022] [Indexed: 12/24/2022] Open
Abstract
The organization of cell populations within animal tissues is essential for the morphogenesis of organs during development. Cells recognize three-dimensional positions with respect to the whole organism and regulate their cell shape, motility, migration, polarization, growth, differentiation, gene expression and cell death according to extracellular signals. Remodeling of the actin filaments is essential to achieve these cell morphological changes. Cofilin is an important binding protein for these filaments; it increases their elasticity in terms of flexion and torsion and also severs them. The activity of cofilin is spatiotemporally inhibited via phosphorylation by the LIM domain kinases 1 and 2 (LIMK1 and LIMK2). Phylogenetic analysis indicates that the phospho-regulation of cofilin has evolved as a mechanism controlling the reorganization of the actin cytoskeleton during complex multicellular processes, such as those that occur during embryogenesis. In this context, the main objective of this review is to provide an update of the respective role of each of the LIM kinases during embryonic development.
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10
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Reynoso S, Castillo V, Katkar GD, Lopez-Sanchez I, Taheri S, Espinoza C, Rohena C, Sahoo D, Gagneux P, Ghosh P. GIV/Girdin, a non-receptor modulator for Gαi/s, regulates spatiotemporal signaling during sperm capacitation and is required for male fertility. eLife 2021; 10:69160. [PMID: 34409938 PMCID: PMC8376251 DOI: 10.7554/elife.69160] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 08/05/2021] [Indexed: 12/25/2022] Open
Abstract
For a sperm to successfully fertilize an egg, it must first undergo capacitation in the female reproductive tract and later undergo acrosomal reaction (AR) upon encountering an egg surrounded by its vestment. How premature AR is avoided despite rapid surges in signaling cascades during capacitation remains unknown. Using a combination of conditional knockout (cKO) mice and cell-penetrating peptides, we show that GIV (CCDC88A), a guanine nucleotide-exchange modulator (GEM) for trimeric GTPases, is highly expressed in spermatocytes and is required for male fertility. GIV is rapidly phosphoregulated on key tyrosine and serine residues in human and murine spermatozoa. These phosphomodifications enable GIV-GEM to orchestrate two distinct compartmentalized signaling programs in the sperm tail and head; in the tail, GIV enhances PI3K→Akt signals, sperm motility and survival, whereas in the head it inhibits cAMP surge and premature AR. Furthermore, GIV transcripts are downregulated in the testis and semen of infertile men. These findings exemplify the spatiotemporally segregated signaling programs that support sperm capacitation and shed light on a hitherto unforeseen cause of infertility in men.
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Affiliation(s)
- Sequoyah Reynoso
- Department of Pathology, School of Medicine, University of California San Diego, San Diego, United States
| | - Vanessa Castillo
- Department of Cellular and Molecular Medicine, School of Medicine, University of California San Diego, San Diego, United States
| | - Gajanan Dattatray Katkar
- Department of Cellular and Molecular Medicine, School of Medicine, University of California San Diego, San Diego, United States
| | - Inmaculada Lopez-Sanchez
- Department of Medicine, School of Medicine, University of California San Diego, San Diego, United States
| | - Sahar Taheri
- Department of Computer Science and Engineering, Jacob's School of Engineering, University of California San Diego, San Diego, United States
| | - Celia Espinoza
- Department of Cellular and Molecular Medicine, School of Medicine, University of California San Diego, San Diego, United States
| | - Cristina Rohena
- Department of Cellular and Molecular Medicine, School of Medicine, University of California San Diego, San Diego, United States
| | - Debashis Sahoo
- Department of Computer Science and Engineering, Jacob's School of Engineering, University of California San Diego, San Diego, United States.,Moore's Comprehensive Cancer Center, University of California San Diego, San Diego, United States.,Department of Pediatrics, School of Medicine, University of California San Diego, San Diego, United States
| | - Pascal Gagneux
- Department of Pathology, School of Medicine, University of California San Diego, San Diego, United States
| | - Pradipta Ghosh
- Department of Cellular and Molecular Medicine, School of Medicine, University of California San Diego, San Diego, United States.,Department of Medicine, School of Medicine, University of California San Diego, San Diego, United States.,Moore's Comprehensive Cancer Center, University of California San Diego, San Diego, United States.,Veterans Affairs Medical Center, Washington DC, United States
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11
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Zhao Y, Wang Y, Guo F, Lu B, Sun J, Wang J, Ren Z. iTRAQ-based proteomic analysis of sperm reveals candidate proteins that affect the quality of spermatozoa from boars on plateaus. Proteome Sci 2021; 19:9. [PMID: 34330296 PMCID: PMC8323236 DOI: 10.1186/s12953-021-00177-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Accepted: 07/09/2021] [Indexed: 01/19/2023] Open
Abstract
Background Tibetan pigs (TP) exhibit heritable adaptations to their hypoxic environments as a result of natural selection. However, candidate proteins that affect the sperm quality of boars on plateaus have not yet been clearly investigated. Methods In this study, to reveal the candidate proteins that affect the quality of spermatozoa of boars on plateaus, we analyzed the sperm quality using computer-assisted semen analysis (CASA) system and reactive oxygen species (ROS) levels. We also compared the proteomes of sperm proteomes between TP and Yorkshire pigs (YP) raised at high altitudes using the isobaric tags for relative and absolute quantitation (iTRAQ) in combination with the liquid chromatography-tandem mass spectrometry (LC–MS/MS) proteomic method, and confirmed the relative expression levels of the four proteins by western blotting. Results The sperm quality of the TP was superior to that of the YP on plateaus. Of the 1,555 quantified proteins, 318 differentially expressed proteins (DEPs) were identified. Gene ontology (GO) analysis revealed that the DEPs were predominantly associated with the sorbitol metabolic process, removal of superoxide radicals, cellular response to superoxide, response to superoxide and regulation of the mitotic spindle assembly. The Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways were mainly enriched in pathways involved in the regulation of the actin cytoskeleton, glutathione metabolism, oxidative phosphorylation, and estrogen signaling. Based on the protein–protein interaction (PPI) network analysis, we identified 8 candidate proteins (FN1, EGF, HSP90B1, CFL1, GPX4, NDUFA6, VDAC2, and CP) that might play important roles and affect the sperm quality of boars on plateaus. Moreover, the relative expression levels of four proteins (CFL1, EGF, FN1, and GPX4) were confirmed by western blot analysis. Conclusions Our study revealed 8 candidate proteins (FN1, EGF, HSP90B1, CFL1, GPX4, NDUFA6, VDAC2, and CP) that affect the sperm quality of boar on plateaus and provide a reference for further studies on improving sperm quality and the molecular breeding of boars on plateaus. Supplementary Information The online version contains supplementary material available at 10.1186/s12953-021-00177-9.
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Affiliation(s)
- Yanling Zhao
- College of Animal Science, Tibet Agricultural and Animal Husbandry University, Linzhi, Tibet, 860000, P.R. China
| | - Yaomei Wang
- College of Animal Science, Tibet Agricultural and Animal Husbandry University, Linzhi, Tibet, 860000, P.R. China
| | - Feipeng Guo
- College of Animal Science, Tibet Agricultural and Animal Husbandry University, Linzhi, Tibet, 860000, P.R. China
| | - Bo Lu
- College of Animal Science, Tibet Agricultural and Animal Husbandry University, Linzhi, Tibet, 860000, P.R. China
| | - Jiale Sun
- College of Animal Science, Tibet Agricultural and Animal Husbandry University, Linzhi, Tibet, 860000, P.R. China
| | - Jianzhou Wang
- College of Animal Science, Tibet Agricultural and Animal Husbandry University, Linzhi, Tibet, 860000, P.R. China
| | - Zili Ren
- College of Animal Science, Tibet Agricultural and Animal Husbandry University, Linzhi, Tibet, 860000, P.R. China.
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Luque GM, Xu X, Romarowski A, Gervasi MG, Orta G, De la Vega-Beltrán JL, Stival C, Gilio N, Dalotto-Moreno T, Krapf D, Visconti PE, Krapf D, Darszon A, Buffone MG. Cdc42 localized in the CatSper signaling complex regulates cAMP-dependent pathways in mouse sperm. FASEB J 2021; 35:e21723. [PMID: 34224609 DOI: 10.1096/fj.202002773rr] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 05/19/2021] [Accepted: 05/24/2021] [Indexed: 11/11/2022]
Abstract
Sperm acquire the ability to fertilize in a process called capacitation and undergo hyperactivation, a change in the motility pattern, which depends on Ca2+ transport by CatSper channels. CatSper is essential for fertilization and it is subjected to a complex regulation that is not fully understood. Here, we report that similar to CatSper, Cdc42 distribution in the principal piece is confined to four linear domains and this localization is disrupted in CatSper1-null sperm. Cdc42 inhibition impaired CatSper activity and other Ca2+ -dependent downstream events resulting in a severe compromise of the sperm fertilizing potential. We also demonstrate that Cdc42 is essential for CatSper function by modulating cAMP production by soluble adenylate cyclase (sAC), providing a new regulatory mechanism for the stimulation of CatSper by the cAMP-dependent pathway. These results reveal a broad mechanistic insight into the regulation of Ca2+ in mammalian sperm, a matter of critical importance in male infertility as well as in contraception.
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Affiliation(s)
- Guillermina M Luque
- Instituto de Biología y Medicina Experimental (IBYME-CONICET), Ciudad Autónoma de Buenos Aires, Argentina
| | - Xinran Xu
- Department of Electrical and Computer Engineering, Colorado State University, Fort Collins, CO, USA
| | - Ana Romarowski
- Instituto de Biología y Medicina Experimental (IBYME-CONICET), Ciudad Autónoma de Buenos Aires, Argentina.,Department of Veterinary and Animal Science, University of Massachusetts, Amherst, MA, USA
| | - María G Gervasi
- Department of Veterinary and Animal Science, University of Massachusetts, Amherst, MA, USA
| | - Gerardo Orta
- Instituto de Biotecnología, UNAM, Cuernavaca, México
| | | | - Cintia Stival
- Instituto de Biología Molecular y Celular de Rosario (CONICET-UNR), Rosario, Santa Fe, Argentina
| | - Nicolás Gilio
- Instituto de Biología y Medicina Experimental (IBYME-CONICET), Ciudad Autónoma de Buenos Aires, Argentina
| | - Tomás Dalotto-Moreno
- Instituto de Biología y Medicina Experimental (IBYME-CONICET), Ciudad Autónoma de Buenos Aires, Argentina
| | - Dario Krapf
- Instituto de Biología Molecular y Celular de Rosario (CONICET-UNR), Rosario, Santa Fe, Argentina
| | - Pablo E Visconti
- Department of Veterinary and Animal Science, University of Massachusetts, Amherst, MA, USA
| | - Diego Krapf
- Department of Electrical and Computer Engineering, Colorado State University, Fort Collins, CO, USA
| | | | - Mariano G Buffone
- Instituto de Biología y Medicina Experimental (IBYME-CONICET), Ciudad Autónoma de Buenos Aires, Argentina
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13
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Carro MDLM, Ramírez-Vasquez RRA, Peñalva DA, Buschiazzo J, Hozbor FA. Desmosterol Incorporation Into Ram Sperm Membrane Before Cryopreservation Improves in vitro and in vivo Fertility. Front Cell Dev Biol 2021; 9:660165. [PMID: 34249914 PMCID: PMC8264764 DOI: 10.3389/fcell.2021.660165] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Accepted: 06/03/2021] [Indexed: 11/13/2022] Open
Abstract
Pregnancy rates in ewes are markedly low after cervical insemination with frozen-thawed sperm. Sensitivity of ram sperm to freeze-thawing is related to the lipid composition of the membrane, particularly to its low sterol content. Recently, we proved that sterol content of ram sperm can be increased by treatment with methyl-β-cyclodextrin-sterol complexes and we provided mechanistic based evidence on the differential behavior of cholesterol and desmosterol in the ram sperm membrane. In the present study, we evaluated the role of increasing cholesterol and desmosterol content of ram sperm before cryopreservation, on the extent and distribution of sterols, cryocapacitation status, acrosome integrity, DNA damage associated with apoptosis and fertility competence in vitro and in vivo of post-thawed sperm. After freeze-thawing, similar levels of sterol content were evidenced in control sperm cells and in those pre-incubated with either cholesterol or desmosterol. Still, moderately higher levels of sterols were registered in treated sperm compared to the control, indicating no physiological excess of sterols after thawing or sterol losses that exceed the control. Live cell imaging of fluorescent cholesterol evidenced the presence of sperm sub-populations differentially affected by freeze-thawing. Similar unimodal frequency profiles were observed between sterol-enriched groups, while the control exhibited a sub-population of sperm compatible with low sterol content. Tyrosine phosphorylation was significantly lower when ram sperm incorporated cholesterol compared to the control. No difference in this capacitation parameter was found between the latter and desmosterol-enriched sperm. The percentage of sperm with damaged acrosomes post-thawing, assessed by a fluorescent lectin, was reduced in sperm that incorporated sterols before freezing, irrespective of the sterol class. These results suggest that sterols exert a stabilizing effect on the acrosome. No differences were found in levels of apoptotic DNA fragmentation among experimental groups. As to fertility trials, desmosterol-enriched sperm gave rise to higher rates of in vitro activated oocytes by heterologous fertilization and to significantly lower pregnancy loss in vivo. Our research provides new insights on sterol incorporation into ram sperm prior to cryopreservation, in particular on the additional benefit of incorporating desmosterol as a strategy to improve fertility outcome.
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Affiliation(s)
- María de Las Mercedes Carro
- Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS Balcarce), Instituto Nacional de Tecnología Agropecuaria (INTA)-Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Balcarce, Argentina
| | - Rafael R A Ramírez-Vasquez
- Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS Balcarce), Instituto Nacional de Tecnología Agropecuaria (INTA)-Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Balcarce, Argentina
| | - Daniel A Peñalva
- Instituto de Investigaciones Bioquímicas de Bahía Blanca (INIBIBB), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Universidad Nacional del Sur (UNS), Bahía Blanca, Argentina.,Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur (UNS), Bahía Blanca, Argentina
| | - Jorgelina Buschiazzo
- Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS Balcarce), Instituto Nacional de Tecnología Agropecuaria (INTA)-Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Balcarce, Argentina
| | - Federico A Hozbor
- Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS Balcarce), Instituto Nacional de Tecnología Agropecuaria (INTA)-Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Balcarce, Argentina
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14
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Articular Chondrocyte Phenotype Regulation through the Cytoskeleton and the Signaling Processes That Originate from or Converge on the Cytoskeleton: Towards a Novel Understanding of the Intersection between Actin Dynamics and Chondrogenic Function. Int J Mol Sci 2021; 22:ijms22063279. [PMID: 33807043 PMCID: PMC8004672 DOI: 10.3390/ijms22063279] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 03/16/2021] [Accepted: 03/17/2021] [Indexed: 02/08/2023] Open
Abstract
Numerous studies have assembled a complex picture, in which extracellular stimuli and intracellular signaling pathways modulate the chondrocyte phenotype. Because many diseases are mechanobiology-related, this review asked to what extent phenotype regulators control chondrocyte function through the cytoskeleton and cytoskeleton-regulating signaling processes. Such information would generate leverage for advanced articular cartilage repair. Serial passaging, pro-inflammatory cytokine signaling (TNF-α, IL-1α, IL-1β, IL-6, and IL-8), growth factors (TGF-α), and osteoarthritis not only induce dedifferentiation but also converge on RhoA/ROCK/Rac1/mDia1/mDia2/Cdc42 to promote actin polymerization/crosslinking for stress fiber (SF) formation. SF formation takes center stage in phenotype control, as both SF formation and SOX9 phosphorylation for COL2 expression are ROCK activity-dependent. Explaining how it is molecularly possible that dedifferentiation induces low COL2 expression but high SF formation, this review theorized that, in chondrocyte SOX9, phosphorylation by ROCK might effectively be sidelined in favor of other SF-promoting ROCK substrates, based on a differential ROCK affinity. In turn, actin depolymerization for redifferentiation would “free-up” ROCK to increase COL2 expression. Moreover, the actin cytoskeleton regulates COL1 expression, modulates COL2/aggrecan fragment generation, and mediates a fibrogenic/catabolic expression profile, highlighting that actin dynamics-regulating processes decisively control the chondrocyte phenotype. This suggests modulating the balance between actin polymerization/depolymerization for therapeutically controlling the chondrocyte phenotype.
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15
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RAC1 controls progressive movement and competitiveness of mammalian spermatozoa. PLoS Genet 2021; 17:e1009308. [PMID: 33539343 PMCID: PMC7861394 DOI: 10.1371/journal.pgen.1009308] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Accepted: 12/10/2020] [Indexed: 11/19/2022] Open
Abstract
Mammalian spermatozoa employ calcium (Ca2+) and cyclic adenosine monophosphate (cAMP) signaling in generating flagellar beat. However, how sperm direct their movement towards the egg cells has remained elusive. Here we show that the Rho small G protein RAC1 plays an important role in controlling progressive motility, in particular average path velocity and linearity. Upon RAC1 inhibition of wild type sperm with the drug NSC23766, progressive movement is impaired. Moreover, sperm from mice homozygous for the genetically variant t-haplotype region (tw5/tw32), which are sterile, show strongly enhanced RAC1 activity in comparison to wild type (+/+) controls, and quickly become immotile in vitro. Sperm from heterozygous (t/+) males, on the other hand, display intermediate RAC1 activity, impaired progressive motility and transmission ratio distortion (TRD) in favor of t-sperm. We show that t/+-derived sperm consist of two subpopulations, highly progressive and less progressive. The majority of highly progressive sperm carry the t-haplotype, while most less progressive sperm contain the wild type (+) chromosome. Dosage-controlled RAC1 inhibition in t/+ sperm by NSC23766 rescues progressive movement of (+)-sperm in vitro, directly demonstrating that impairment of progressive motility in the latter is caused by enhanced RAC1 activity. The combined data show that RAC1 plays a pivotal role in controlling progressive motility in sperm, and that inappropriate, enhanced or reduced RAC1 activity interferes with sperm progressive movement. Differential RAC1 activity within a sperm population impairs the competitiveness of sperm cells expressing suboptimal RAC1 activity and thus their fertilization success, as demonstrated by t/+-derived sperm. In conjunction with t-haplotype triggered TRD, we propose that Rho GTPase signaling is essential for directing sperm towards the egg cells.
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16
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Baro Graf C, Ritagliati C, Stival C, Luque GM, Gentile I, Buffone MG, Krapf D. Everything you ever wanted to know about PKA regulation and its involvement in mammalian sperm capacitation. Mol Cell Endocrinol 2020; 518:110992. [PMID: 32853743 DOI: 10.1016/j.mce.2020.110992] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 08/11/2020] [Accepted: 08/12/2020] [Indexed: 12/29/2022]
Abstract
The 3', 5'-cyclic adenosine monophosphate (cAMP) dependent protein kinase (PKA) is a tetrameric holoenzyme comprising a set of two regulatory subunits (PKA-R) and two catalytic (PKA-C) subunits. The PKA-R subunits act as sensors of cAMP and allow PKA-C activity. One of the first signaling events observed during mammalian sperm capacitation is PKA activation. Thus, understanding how PKA activity is restricted in space and time is crucial to decipher the critical steps of sperm capacitation. It is widely accepted that PKA specificity depends on several levels of regulation. Anchoring proteins play a pivotal role in achieving proper localization signaling, subcellular targeting and cAMP microdomains. These multi-factorial regulation steps are necessary for a precise spatio-temporal activation of PKA. Here we discuss recent understanding of regulatory mechanisms of PKA in mammalian sperm, such as post-translational modifications, in the context of its role as the master orchestrator of molecular events conducive to capacitation.
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Affiliation(s)
- Carolina Baro Graf
- Laboratory of Cell Signal Transduction Networks, Instituto de Biología Molecular y Celular de Rosario (IBR), CONICET-UNR, Rosario, Argentina; Laboratorio de Medicina Reproductiva (LMR), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Rosario, Argentina
| | - Carla Ritagliati
- Laboratory of Cell Signal Transduction Networks, Instituto de Biología Molecular y Celular de Rosario (IBR), CONICET-UNR, Rosario, Argentina
| | - Cintia Stival
- Laboratory of Cell Signal Transduction Networks, Instituto de Biología Molecular y Celular de Rosario (IBR), CONICET-UNR, Rosario, Argentina
| | - Guillermina M Luque
- Laboratory of Cellular and Molecular Reproductive Biology, Instituto de Biología y Medicina Experimental (IBYME), CONICET, Buenos Aires, Argentina
| | - Iñaki Gentile
- Laboratory of Cell Signal Transduction Networks, Instituto de Biología Molecular y Celular de Rosario (IBR), CONICET-UNR, Rosario, Argentina
| | - Mariano G Buffone
- Laboratory of Cellular and Molecular Reproductive Biology, Instituto de Biología y Medicina Experimental (IBYME), CONICET, Buenos Aires, Argentina
| | - Dario Krapf
- Laboratory of Cell Signal Transduction Networks, Instituto de Biología Molecular y Celular de Rosario (IBR), CONICET-UNR, Rosario, Argentina; Laboratorio de Medicina Reproductiva (LMR), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Rosario, Argentina.
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17
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Review of PIP2 in Cellular Signaling, Functions and Diseases. Int J Mol Sci 2020; 21:ijms21218342. [PMID: 33172190 PMCID: PMC7664428 DOI: 10.3390/ijms21218342] [Citation(s) in RCA: 71] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 10/30/2020] [Accepted: 11/03/2020] [Indexed: 12/27/2022] Open
Abstract
Phosphoinositides play a crucial role in regulating many cellular functions, such as actin dynamics, signaling, intracellular trafficking, membrane dynamics, and cell-matrix adhesion. Central to this process is phosphatidylinositol bisphosphate (PIP2). The levels of PIP2 in the membrane are rapidly altered by the activity of phosphoinositide-directed kinases and phosphatases, and it binds to dozens of different intracellular proteins. Despite the vast literature dedicated to understanding the regulation of PIP2 in cells over past 30 years, much remains to be learned about its cellular functions. In this review, we focus on past and recent exciting results on different molecular mechanisms that regulate cellular functions by binding of specific proteins to PIP2 or by stabilizing phosphoinositide pools in different cellular compartments. Moreover, this review summarizes recent findings that implicate dysregulation of PIP2 in many diseases.
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18
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Balestrini PA, Jabloñski M, Schiavi-Ehrenhaus LJ, Marín-Briggiler CI, Sánchez-Cárdenas C, Darszon A, Krapf D, Buffone MG. Seeing is believing: Current methods to observe sperm acrosomal exocytosis in real time. Mol Reprod Dev 2020; 87:1188-1198. [PMID: 33118273 DOI: 10.1002/mrd.23431] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 09/25/2020] [Accepted: 10/14/2020] [Indexed: 01/10/2023]
Abstract
Acrosomal exocytosis (AR) is a critical process that sperm need to undergo to fertilize an egg. The evaluation of the presence or absence of the acrosome is usually performed by using lectins or dyes in fixed cells. With this approach, it is neither possible to monitor the dynamic process of exocytosis and related molecular events while discriminating between live and dead cells, nor to evaluate the acrosomal status while sperm reside in the female reproductive tract. However, over the last two decades, several new methodologies have been used to assess the occurrence of AR in living cells allowing different groups to obtain information that was not possible in the past. These techniques have revolutionized the whole study of this process. This review summarizes current methods available to analyze AR in living cells as well as the important information that emerged from studies using these approaches.
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Affiliation(s)
- Paula A Balestrini
- Instituto de Biología y Medicina Experimental (IBYME-CONICET), Buenos Aires, Argentina
| | - Martina Jabloñski
- Instituto de Biología y Medicina Experimental (IBYME-CONICET), Buenos Aires, Argentina
| | | | | | - Claudia Sánchez-Cárdenas
- Departamento de Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México (UNAM), Cuernavaca, Morelos, México
| | - Alberto Darszon
- Departamento de Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México (UNAM), Cuernavaca, Morelos, México
| | - Darío Krapf
- Instituto de Biología Molecular y Celular de Rosario, CONICET-UNR, Rosario, Argentina
| | - Mariano G Buffone
- Instituto de Biología y Medicina Experimental (IBYME-CONICET), Buenos Aires, Argentina
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A Progressive Loss of phosphoSer138-Profilin Aligns with Symptomatic Course in the R6/2 Mouse Model of Huntington's Disease: Possible Sex-Dependent Signaling. Cell Mol Neurobiol 2020; 42:871-888. [PMID: 33108594 PMCID: PMC8891113 DOI: 10.1007/s10571-020-00984-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 10/16/2020] [Indexed: 12/20/2022]
Abstract
The R6/2 transgenic mouse model of Huntington’s disease (HD) carries several copies of exon1 of the huntingtin gene that contains a highly pathogenic 120 CAG-repeat expansion. We used kinome analysis to screen for kinase activity patterns in neural tissues from wildtype (WT) and R6/2 mice at a pre-symptomatic (e.g., embryonic) and symptomatic (e.g., between 3 and 10 weeks postnatal) time points. We identified changes in several signaling cascades, for example, the Akt/FoxO3/CDK2, mTOR/ULK1, and RAF/MEK/CREB pathways. We also identified the Rho-Rac GTPase cascade that contributes to cytoskeleton organization through modulation of the actin-binding proteins, cofilin and profilin. Immunoblotting revealed higher levels of phosphoSer138-profilin in embryonic R6/2 mouse samples (cf. WT mice) that diminish progressively and significantly over the postnatal, symptomatic course of the disease. We detected sex- and genotype-dependent patterns in the phosphorylation of actin-regulators such a ROCK2, PAK, LIMK1, cofilin, and SSH1L, yet none of these aligned consistently with the changing levels of phosphoSer138-profilin. This could be reflecting an imbalance in the sequential influences these regulators are known to exert on actin signaling. The translational potential of these observations was inferred from preliminary observations of changes in LIMK-cofilin signaling and loss of neurite integrity in neural stem cells derived from an HD patient (versus a healthy control). Our observations suggest that a pre-symptomatic, neurodevelopmental onset of change in the phosphorylation of Ser138-profilin, potentially downstream of distinct signaling changes in male and female mice, could be contributing to cytoskeletal phenotypes in the R6/2 mouse model of HD pathology.
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Salgado-Lucio ML, Ramírez-Ramírez D, Jorge-Cruz CY, Roa-Espitia AL, Hernández-González EO. FAK regulates actin polymerization during sperm capacitation via the ERK2/GEF-H1/RhoA signaling pathway. J Cell Sci 2020; 133:jcs239186. [PMID: 32107290 DOI: 10.1242/jcs.239186] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Accepted: 02/08/2020] [Indexed: 12/18/2022] Open
Abstract
Actin polymerization is a crucial process during sperm capacitation. We have recently described the participation of FAK during actin polymerization in guinea pig spermatozoa. However, the mechanism by which FAK mediates these processes is unknown. Our previous data have shown that MAPK1 (hereafter referred to as ERK2) is activated during the first minutes of capacitation, and inhibition of ERK2 blocked actin polymerization and the acrosome reaction. In this current study, we found that FAK is involved in ERK2 activation - as FAK was phosphorylated at tyrosine residue 925 and bound to Grb2 - and that inhibition of FAK results in a significant decrease of ERK2 activation. We also confirmed the presence of Rho guanine nucleotide exchange factor 2 (ARHGEF2, hereafter referred to as GEF-H1), which is able to associate with RhoA during capacitation. RhoA activation and its participation in actin polymerization were also analyzed. Inhibition of FAK or ERK1/2 impeded GEF-H1 phosphorylation, RhoA activation, and the association between GEF-H1 and RhoA. Finally, we observed the presence of fibronectin on the sperm surface, its role in sperm-sperm interaction as well as participation of β-integrin in the activation of ERK2. Our results show that the signaling pathway downstream of fibronectin, via integrin, FAK, Grb2, MEK1/2, ERK2, GEF-H1 and RhoA regulates the actin polymerization associated with spermatozoa capacitation.
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Affiliation(s)
- Monica L Salgado-Lucio
- Departamento de Biología Celular, Centro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional, Av. Instituto Politécnico Nacional 2508, San Pedro Zacatenco, CDMX 07360, México
| | - Danelia Ramírez-Ramírez
- Departamento de Biología Celular, Centro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional, Av. Instituto Politécnico Nacional 2508, San Pedro Zacatenco, CDMX 07360, México
| | - Coral Y Jorge-Cruz
- Departamento de Biología Celular, Centro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional, Av. Instituto Politécnico Nacional 2508, San Pedro Zacatenco, CDMX 07360, México
| | - Ana L Roa-Espitia
- Departamento de Biología Celular, Centro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional, Av. Instituto Politécnico Nacional 2508, San Pedro Zacatenco, CDMX 07360, México
| | - Enrique O Hernández-González
- Departamento de Biología Celular, Centro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional, Av. Instituto Politécnico Nacional 2508, San Pedro Zacatenco, CDMX 07360, México
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Agonist Effects of Propranolol on Non-Tumor Human Breast Cells. Cells 2020; 9:cells9041036. [PMID: 32331276 PMCID: PMC7226086 DOI: 10.3390/cells9041036] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 04/17/2020] [Accepted: 04/20/2020] [Indexed: 12/28/2022] Open
Abstract
The β-blocker propranolol (PROP) has been proposed as a repurposed treatment for breast cancer. The similarity of action between β-agonists and antagonists found on breast cells encouraged us to compare PROP and isoproterenol (ISO, agonist) signaling pathways on a human breast cell line. Cell proliferation was measured by cell counting and DNA-synthesis. Cell adhesion was measured counting the cells that remained adhered to the plastic after different treatments. Changes in actin cytoskeleton were observed by fluorescence staining and Western Blot. ISO and PROP caused a diminution of cell proliferation and an increase of cell adhesion, reverted by the pure β-antagonist ICI-118551. ISO and PROP induced a reorganization of actin cytoskeleton increasing F-actin, p-COFILIN and p-LIMK. While ISO elicited a marked enhancement of cAMP concentrations and an increase of vasodilator-stimulated phosphoprotein (VASP) and cAMP response element-binding protein (CREB) phosphorylation, PROP did not. Clathrin-mediated endocytosis inhibition or β-arrestin1 dominant-negative mutant abrogated PROP-induced cell adhesion and COFILIN phosphorylation. The fact that PROP has been proposed as an adjuvant drug for breast cancer makes it necessary to determine the specific action of PROP in breast models. These results provide an explanation for the discrepancies observed between experimental results and clinical evidence.
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Ramírez‐Ramírez D, Salgado‐Lucio ML, Roa‐Espitia AL, Fierro R, González‐Márquez H, Cordero‐Martínez J, Hernández‐González EO. Rac1 is necessary for capacitation and acrosome reaction in guinea pig spermatozoa. J Cell Biochem 2019; 121:2864-2876. [DOI: 10.1002/jcb.29521] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Accepted: 10/10/2019] [Indexed: 11/07/2022]
Affiliation(s)
- Danelia Ramírez‐Ramírez
- Doctorado en Ciencias Biológicas y de la SaludUniversidad Autónoma Metropolitana‐Iztapalapa Ciudad de México México
| | - Monica L. Salgado‐Lucio
- Departamento de Biología CelularCentro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional México City México
| | - Ana L. Roa‐Espitia
- Departamento de Biología CelularCentro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional México City México
| | - Reyna Fierro
- Departamento de Ciencias de la SaludUniversidad Autónoma Metropolitana‐Iztapalapa Ciudad de México México
| | - Humberto González‐Márquez
- Departamento de Ciencias de la SaludUniversidad Autónoma Metropolitana‐Iztapalapa Ciudad de México México
| | - Joaquín Cordero‐Martínez
- Departamento de Bioquímica, Escuela Nacional de Ciencias BiológicasInstituto Politécnico Nacional Ciudad de México México
| | - Enrique O. Hernández‐González
- Departamento de Biología CelularCentro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional México City México
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23
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Weigel Muñoz M, Battistone MA, Carvajal G, Maldera JA, Curci L, Torres P, Lombardo D, Pignataro OP, Da Ros VG, Cuasnicú PS. Influence of the genetic background on the reproductive phenotype of mice lacking Cysteine-Rich Secretory Protein 1 (CRISP1). Biol Reprod 2019; 99:373-383. [PMID: 29481619 DOI: 10.1093/biolre/ioy048] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Accepted: 02/21/2018] [Indexed: 01/14/2023] Open
Abstract
Epididymal sperm protein CRISP1 has the ability to both regulate murine CatSper, a key sperm calcium channel, and interact with egg-binding sites during fertilization. In spite of its relevance for sperm function, Crisp1-/-mice are fertile. Considering that phenotypes can be influenced by the genetic background, in the present work mice from the original mixed Crisp1-/- colony (129/SvEv*C57BL/6) were backcrossed onto the C57BL/6 strain for subsequent analysis of their reproductive phenotype. Whereas fertility and fertilization rates of C57BL/6 Crisp1-/- males did not differ from those reported for mice from the mixed background, several sperm functional parameters were clearly affected by the genetic background. Crisp1-/- sperm from the homogeneous background exhibited defects in both the progesterone-induced acrosome reaction and motility not observed in the mixed background, and normal rather than reduced protein tyrosine phosphorylation. Additional studies revealed a significant decrease in sperm hyperactivation as well as in cAMP and protein kinase A (PKA) substrate phosphorylation levels in sperm from both colonies. The finding that exposure of mutant sperm to a cAMP analog and phosphodiesterase inhibitor overcame the sperm functional defects observed in each colony indicated that a common cAMP-PKA signaling defect led to different phenotypes depending on the genetic background. Altogether, our observations indicate that the phenotype of CRISP1 null males is modulated by the genetic context and reveal new roles for the protein in both the functional events and signaling pathways associated to capacitation.
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Affiliation(s)
- Mariana Weigel Muñoz
- Instituto de Biología y Medicina Experimental (IByME-CONICET), Buenos Aires, Argentina
| | - María A Battistone
- Instituto de Biología y Medicina Experimental (IByME-CONICET), Buenos Aires, Argentina
| | - Guillermo Carvajal
- Instituto de Biología y Medicina Experimental (IByME-CONICET), Buenos Aires, Argentina
| | - Julieta A Maldera
- Instituto de Biología y Medicina Experimental (IByME-CONICET), Buenos Aires, Argentina
| | - Ludmila Curci
- Instituto de Biología y Medicina Experimental (IByME-CONICET), Buenos Aires, Argentina
| | - Pablo Torres
- Instituto de Investigación y Tecnología en Reproducción Animal, Facultad de Ciencias Veterinarias, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Daniel Lombardo
- Instituto de Investigación y Tecnología en Reproducción Animal, Facultad de Ciencias Veterinarias, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Omar P Pignataro
- Instituto de Biología y Medicina Experimental (IByME-CONICET), Buenos Aires, Argentina.,Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Vanina G Da Ros
- Instituto de Biología y Medicina Experimental (IByME-CONICET), Buenos Aires, Argentina
| | - Patricia S Cuasnicú
- Instituto de Biología y Medicina Experimental (IByME-CONICET), Buenos Aires, Argentina
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24
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Cyclin-CDK Complexes are Key Controllers of Capacitation-Dependent Actin Dynamics in Mammalian Spermatozoa. Int J Mol Sci 2019; 20:ijms20174236. [PMID: 31470670 PMCID: PMC6747110 DOI: 10.3390/ijms20174236] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 08/24/2019] [Accepted: 08/26/2019] [Indexed: 12/20/2022] Open
Abstract
Mammalian spermatozoa are infertile immediately after ejaculation and need to undergo a functional maturation process to acquire the competence to fertilize the female egg. During this process, called capacitation, the actin cytoskeleton dramatically changes its organization. First, actin fibers polymerize, forming a network over the anterior part of the sperm cells head, and then it rapidly depolymerizes and disappears during the exocytosis of the acrosome content (the acrosome reaction (AR)). Here, we developed a computational model representing the actin dynamics (AD) process on mature spermatozoa. In particular, we represented all the molecular events known to be involved in AD as a network of nodes linked by edges (the interactions). After the network enrichment, using an online resource (STRING), we carried out the statistical analysis on its topology, identifying the controllers of the system and validating them in an experiment of targeted versus random attack to the network. Interestingly, among them, we found that cyclin-dependent kinase (cyclin–CDK) complexes are acting as stronger controllers. This finding is of great interest since it suggests the key role that cyclin–CDK complexes could play in controlling AD during sperm capacitation, leading us to propose a new and interesting non-genomic role for these molecules.
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25
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Godínez-Solís Y, Solís-Heredia MDJ, Roa-Espitia A, Parra-Forero LY, Hernández-González EO, Hernández-Ochoa I, Quintanilla-Vega B. Low concentrations of lead decrease the sperm fertilization ability by altering the acrosome reaction in mice. Toxicol Appl Pharmacol 2019; 380:114694. [PMID: 31356930 DOI: 10.1016/j.taap.2019.114694] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 07/24/2019] [Accepted: 07/25/2019] [Indexed: 11/17/2022]
Abstract
Lead (Pb) exposure at high concentrations is associated with poor sperm quality, acrosome alterations, and low fertilization rate. Sperm capacitation and the acrosome reaction (AR) are required for successful fertilization. Actin polymerization is crucial for correct capacitation, and small GTPases, such as RhoA, Rac1, and Cdc42, are involved. This study aimed to evaluate the effects of Pb on sperm fertilization ability, capacitation, AR, and the mechanisms involved in mice exposed to low Pb concentrations. CD1 mice were exposed to 0.01% Pb2+ for 45 days through their drinking water and their spermatozoa were collected from the cauda epididymis-vas deferens to evaluate the following: AR (oAR: initial, sAR: spontaneous, and iAR: induced) using the PNA-FITC assay, sperm capacitation (P-Tyr levels), actin polymerization (phalloidin-TRITC), MDA production (stress oxidative marker), the RhoA, Rac1, and Cdc42 protein levels, and the in vitro fertilization (IVF). After the treatment, the blood Pb (PbB) concentration was 9.4 ± 1.6 μg/dL. Abnormal sperm morphology and the oAR increased (8 and 19%, respectively), whereas the iAR decreased (15%) after a calcium ionophore challenge, and the actin polymerization decreased in the sperm heads (59%) and tails (42%). Rac1 was the only Rho protein to significantly decrease (33%). Spermatozoa from the Pb-treated mice showed a significant reduction in the fertilization rate (19%). Our data suggest that Pb exposure at environmental concentrations (PbB < 10 μg/dL) decreases the acrosome function and affects the sperm fertilization ability; this is probably a consequence of the low Rac1 levels, which did not allow adequate actin polymerization to occur.
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26
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Alonso CAI, Lottero-Leconte R, Luque GM, Vernaz ZJ, Di Siervi N, Gervasi MG, Buffone MG, Davio C, Perez-Martinez S. MRP4-mediated cAMP efflux is essential for mouse spermatozoa capacitation. J Cell Sci 2019; 132:jcs.230565. [PMID: 31253671 DOI: 10.1242/jcs.230565] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Accepted: 06/20/2019] [Indexed: 12/16/2022] Open
Abstract
Mammalian spermatozoa must undergo biochemical and structural changes to acquire the capacity for fertilization, in a process known as capacitation. Activation of PKA enzymes is essential for capacitation, and thus cAMP levels are tightly regulated during this process. Previously, we demonstrated that during capacitation, bovine spermatozoa extrude cAMP through multidrug resistance-associated protein 4 (MRP4, also known as ABCC4), which regulates intracellular levels of the nucleotide and provides cAMP to the extracellular space. Here, we report the presence of functional MRP4 in murine spermatozoa, since its pharmacological inhibition with MK571 decreased levels of extracellular cAMP. This also produced a sudden increase in PKA activity, with decreased tyrosine phosphorylation at the end of capacitation. Blockade of MRP4 inhibited induction of acrosome reaction, hyperactivation and in vitro fertilization. Moreover, MRP4 inhibition generated an increase in Ca2+ levels mediated by PKA, and depletion of Ca2+ salts from the medium prevented the loss of motility and phosphotyrosine inhibition produced by MK571. These results were supported using spermatozoa from CatSper Ca2+ channel knockout mice. Taken together, these results suggest that cAMP efflux via MRP4 plays an essential role in mouse sperm capacitation.This article has an associated First Person interview with the first author of the paper.
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Affiliation(s)
- C A I Alonso
- Centro de Estudios Farmacológicos y Botánicos (CEFYBO) (UBA-CONICET), Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires C1121ABG, Argentina
| | - R Lottero-Leconte
- Centro de Estudios Farmacológicos y Botánicos (CEFYBO) (UBA-CONICET), Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires C1121ABG, Argentina
| | - G M Luque
- Instituto de Biología y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires C1428ADN, Argentina
| | - Z J Vernaz
- Centro de Estudios Farmacológicos y Botánicos (CEFYBO) (UBA-CONICET), Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires C1121ABG, Argentina
| | - N Di Siervi
- Instituto de Investigaciones Farmacológicas (ININFA) (UBA-CONICET), Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires C1113AAD, Argentina
| | - M G Gervasi
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA 01003, United States
| | - M G Buffone
- Instituto de Biología y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires C1428ADN, Argentina
| | - C Davio
- Instituto de Investigaciones Farmacológicas (ININFA) (UBA-CONICET), Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires C1113AAD, Argentina
| | - S Perez-Martinez
- Centro de Estudios Farmacológicos y Botánicos (CEFYBO) (UBA-CONICET), Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires C1121ABG, Argentina
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27
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Xia L, Lin J, Su J, Oyang L, Wang H, Tan S, Tang Y, Chen X, Liu W, Luo X, Tian Y, Liang J, Su Q, Liao Q, Zhou Y. Diallyl disulfide inhibits colon cancer metastasis by suppressing Rac1-mediated epithelial-mesenchymal transition. Onco Targets Ther 2019; 12:5713-5728. [PMID: 31410018 PMCID: PMC6645609 DOI: 10.2147/ott.s208738] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Accepted: 06/06/2019] [Indexed: 12/14/2022] Open
Abstract
Background Prevention of epithelial-mesenchymal transition (EMT) provides a novel treatment strategy for tumor metastasis. Our previous studies have shown that diallyl disulfide (DADS) inhibits Ras related C3 botulinum toxin substrate1 (Rac1) expression, being a potential agent that suppresses migration and invasion of colon cancer cells. The study provides information on the underlying mechanisms. Methods The expression of Rac1 and EMT markers (vimentin, N-cadherin and E-cadherin) in colon cancer samples was detected. Colon cancer cell lines treated with or without DADS were used to examine EMT markers, Rac1 and its related molecules. Various cell functions related to metastasis were performed in vitro, and further confirmed in vivo. Results Rac1 was highly expressed in colon cancer, and associated with aberrant expression of EMT markers and poor prognosis. Rac1 overexpression induced cell migration and invasion in vitro and metastasis in vivo with down-regulation of E-cadherin and up-regulation of N-cadherin, vimentin, and snail1, whereas inhibition of Rac1 impaired the oncogenic function. DADS suppressed Rac1 expression and activity via inhibition of PI3K/Akt pathway, thus suppressing EMT and invasion and migration of colon cancer cells. The tumor inhibition of DADS was enhanced by knockdown of Rac1, but antagonized by overexpression of Rac1. We further found that DADS blocked EMT via targeting the Rac1-mediated PAK1-LIMK1-Cofilins signaling. Conclusion Rac1 is a potential target molecule for the inhibitory effect of DADS on EMT and invasion and metastasis of colon cancer cells.
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Affiliation(s)
- Longzheng Xia
- Key Laboratory of Translational Radiation Oncology, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University and Hunan Cancer Hospital, Changsha 410013, Hunan, People's Republic of China
| | - Jingguan Lin
- Key Laboratory of Translational Radiation Oncology, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University and Hunan Cancer Hospital, Changsha 410013, Hunan, People's Republic of China
| | - Jian Su
- Cancer Research Institute, University of South China, Hengyang, Hunan, People's Republic of China
| | - Linda Oyang
- Key Laboratory of Translational Radiation Oncology, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University and Hunan Cancer Hospital, Changsha 410013, Hunan, People's Republic of China
| | - Heran Wang
- Key Laboratory of Translational Radiation Oncology, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University and Hunan Cancer Hospital, Changsha 410013, Hunan, People's Republic of China
| | - Shiming Tan
- Key Laboratory of Translational Radiation Oncology, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University and Hunan Cancer Hospital, Changsha 410013, Hunan, People's Republic of China
| | - Yanyan Tang
- Key Laboratory of Translational Radiation Oncology, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University and Hunan Cancer Hospital, Changsha 410013, Hunan, People's Republic of China
| | - Xiaoyan Chen
- Key Laboratory of Translational Radiation Oncology, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University and Hunan Cancer Hospital, Changsha 410013, Hunan, People's Republic of China
| | - Wenbin Liu
- Key Laboratory of Translational Radiation Oncology, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University and Hunan Cancer Hospital, Changsha 410013, Hunan, People's Republic of China
| | - Xia Luo
- Key Laboratory of Translational Radiation Oncology, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University and Hunan Cancer Hospital, Changsha 410013, Hunan, People's Republic of China
| | - Yutong Tian
- Key Laboratory of Translational Radiation Oncology, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University and Hunan Cancer Hospital, Changsha 410013, Hunan, People's Republic of China
| | - Jiaxin Liang
- Key Laboratory of Translational Radiation Oncology, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University and Hunan Cancer Hospital, Changsha 410013, Hunan, People's Republic of China
| | - Qi Su
- Cancer Research Institute, University of South China, Hengyang, Hunan, People's Republic of China
| | - Qianjin Liao
- Key Laboratory of Translational Radiation Oncology, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University and Hunan Cancer Hospital, Changsha 410013, Hunan, People's Republic of China
| | - Yujuan Zhou
- Key Laboratory of Translational Radiation Oncology, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University and Hunan Cancer Hospital, Changsha 410013, Hunan, People's Republic of China
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28
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Pilarzyk K, Klett J, Pena EA, Porcher L, Smith AJ, Kelly MP. Loss of Function of Phosphodiesterase 11A4 Shows that Recent and Remote Long-Term Memories Can Be Uncoupled. Curr Biol 2019; 29:2307-2321.e5. [PMID: 31303492 DOI: 10.1016/j.cub.2019.06.018] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Revised: 03/06/2019] [Accepted: 06/07/2019] [Indexed: 12/19/2022]
Abstract
Systems consolidation is a process by which memories initially require the hippocampus for recent long-term memory (LTM) but then become increasingly independent of the hippocampus and more dependent on the cortex for remote LTM. Here, we study the role of phosphodiesterase 11A4 (PDE11A4) in systems consolidation. PDE11A4, which degrades cyclic adenosine monophosphate (cAMP) and cyclic guanosine monophosphate (cGMP), is preferentially expressed in neurons of CA1, the subiculum, and the adjacently connected amygdalohippocampal region. In male and female mice, deletion of PDE11A enhances remote LTM for social odor recognition and social transmission of food preference (STFP) despite eliminating or silencing recent LTM for those same social events. Measurement of a surrogate marker of neuronal activation (i.e., Arc mRNA) suggests the recent LTM deficits observed in Pde11 knockout mice correspond with decreased activation of ventral CA1 relative to wild-type littermates. In contrast, the enhanced remote LTM observed in Pde11a knockout mice corresponds with increased activation and altered functional connectivity of anterior cingulate cortex, frontal association cortex, parasubiculum, and the superficial layer of medial entorhinal cortex. The apparent increased neural activation observed in prefrontal cortex of Pde11a knockout mice during remote LTM retrieval may be related to an upregulation of the N-methyl-D-aspartate receptor subunits NR1 and NR2A. Viral restoration of PDE11A4 to vCA1 alone is sufficient to rescue both the LTM phenotypes and upregulation of NR1 exhibited by Pde11a knockout mice. Together, our findings suggest remote LTM can be decoupled from recent LTM, which may have relevance for cognitive deficits associated with aging, temporal lobe epilepsy, or transient global amnesia.
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Affiliation(s)
- Katy Pilarzyk
- Department of Pharmacology, Physiology & Neuroscience, University of South Carolina School of Medicine, 6439 Garners Ferry Road, Columbia, SC 29209, USA
| | - Jennifer Klett
- Department of Pharmacology, Physiology & Neuroscience, University of South Carolina School of Medicine, 6439 Garners Ferry Road, Columbia, SC 29209, USA
| | - Edsel A Pena
- Department of Statistics, University of South Carolina, 1523 Green Street, Columbia, SC 29201, USA
| | - Latarsha Porcher
- Department of Pharmacology, Physiology & Neuroscience, University of South Carolina School of Medicine, 6439 Garners Ferry Road, Columbia, SC 29209, USA
| | - Abigail J Smith
- Department of Pharmacology, Physiology & Neuroscience, University of South Carolina School of Medicine, 6439 Garners Ferry Road, Columbia, SC 29209, USA
| | - Michy P Kelly
- Department of Pharmacology, Physiology & Neuroscience, University of South Carolina School of Medicine, 6439 Garners Ferry Road, Columbia, SC 29209, USA.
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29
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Zhang C, Chen F, Liu X, Han X, Hu Y, Su X, Chen Y, Sun Y, Han L. Gliotoxin Induces Cofilin Phosphorylation to Promote Actin Cytoskeleton Dynamics and Internalization of Aspergillus fumigatus Into Type II Human Pneumocyte Cells. Front Microbiol 2019; 10:1345. [PMID: 31275272 PMCID: PMC6591310 DOI: 10.3389/fmicb.2019.01345] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Accepted: 05/29/2019] [Indexed: 01/27/2023] Open
Abstract
Aspergillus fumigatus is able to internalize into lung epithelial cells to escape from immune attack for further dissemination. We previously reported that gliotoxin, a major mycotoxin of A. fumigatus, promotes this internalization; however, the mechanism remained unclear. Here, we report that gliotoxin is able to induce cofilin phosphorylation in A549 type II human pneumocytes. Either too high or too low a level of cofilin phosphorylation blocked the gliotoxin-induced actin cytoskeleton rearrangement and A. fumigatus internalization. LIM domain kinase 1 (LIMK1) and its upstream small GTPases (Cdc42 and RhoA, but not Rac1) predominantly mediated the gliotoxin-induced cofilin phosphorylation and A. fumigatus internalization. Simultaneously, gliotoxin significantly stimulated an increase in cAMP; however, adding an antagonist of PKA did not block gliotoxin-induced A. fumigatus internalization. In vivo, exogenous gliotoxin helped gliotoxin synthesis deficient strain gliPΔ invade into the lung tissue and the lung fungal burden increased markedly in immunosuppressed mice. In conclusion, these data revealed a novel role of gliotoxin in inducing cofilin phosphorylation mostly through the Cdc42/RhoA-LIMK1 signaling pathway to promote actin cytoskeleton rearrangement and internalization of A. fumigatus into type II human pneumocytes.
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Affiliation(s)
- Changjian Zhang
- Chinese PLA Center for Disease Control and Prevention, Beijing, China.,Academy of Military Medical Sciences, Beijing, China
| | - Fangyan Chen
- Chinese PLA Center for Disease Control and Prevention, Beijing, China
| | - Xiaoyu Liu
- Chinese PLA Center for Disease Control and Prevention, Beijing, China.,Academy of Military Medical Sciences, Beijing, China
| | - Xuelin Han
- Chinese PLA Center for Disease Control and Prevention, Beijing, China
| | - Yingsong Hu
- Chinese PLA Center for Disease Control and Prevention, Beijing, China
| | - Xueting Su
- Chinese PLA Center for Disease Control and Prevention, Beijing, China
| | - Yong Chen
- Chinese PLA Center for Disease Control and Prevention, Beijing, China
| | - Yansong Sun
- Academy of Military Medical Sciences, Beijing, China
| | - Li Han
- Chinese PLA Center for Disease Control and Prevention, Beijing, China
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30
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Bernabò N, Machado-Simoes J, Valbonetti L, Ramal-Sanchez M, Capacchietti G, Fontana A, Zappacosta R, Palestini P, Botto L, Marchisio M, Lanuti P, Ciulla M, Di Stefano A, Fioroni E, Spina M, Barboni B. Graphene Oxide increases mammalian spermatozoa fertilizing ability by extracting cholesterol from their membranes and promoting capacitation. Sci Rep 2019; 9:8155. [PMID: 31148593 PMCID: PMC6544623 DOI: 10.1038/s41598-019-44702-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Accepted: 05/14/2019] [Indexed: 11/09/2022] Open
Abstract
Graphene Oxide (GO) is a widely used biomaterial with an amazing variety of applications in biology and medicine. Recently, we reported the ability of GO to improve the in vitro fertilization (IVF) outcomes in swine, a validated animal model with a high predictive value for human fertility. For that reason, here we characterized the mechanisms involved in this positive interaction by adopting an experimental approach combining biological methods (confocal microscopy analysis on single cell, flow cytometry on cell populations and co-incubation with epithelial oviductal cells), physical-chemical techniques (Differential Scanning Calorimetry and Thermogravimetric Analysis), and chemical methods (mass spectrometry and lipid measurement). As a result, we propose a model in which GO is able to extract cholesterol from the spermatozoa membrane without causing any detrimental effect. In this way, the cholesterol extraction promotes a change in membrane chemical-physical properties that could positively affect male gamete function, modulating sperm signalling function and increasing in this way the fertilizing potential, without losing the ability to physiologically interact with the female environment. In conclusion, these data seem to suggest new intriguing possibilities in engineering sperm membrane for improving assisted reproduction technologies outcomes, even in human medicine.
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Affiliation(s)
- Nicola Bernabò
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Via Renato Balzarini 1, 64100, Teramo, Italy.
| | - Juliana Machado-Simoes
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Via Renato Balzarini 1, 64100, Teramo, Italy
| | - Luca Valbonetti
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Via Renato Balzarini 1, 64100, Teramo, Italy
| | - Marina Ramal-Sanchez
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Via Renato Balzarini 1, 64100, Teramo, Italy
| | - Giulia Capacchietti
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Via Renato Balzarini 1, 64100, Teramo, Italy
| | - Antonella Fontana
- Department of Pharmacy, University "G. d'Annunzio", Via dei Vestini, 66100, Chieti, Italy
| | - Romina Zappacosta
- Department of Pharmacy, University "G. d'Annunzio", Via dei Vestini, 66100, Chieti, Italy
| | - Paola Palestini
- School of Medicine and Surgery, University of Milano Bicocca, 20900, Monza, Italy
| | - Laura Botto
- School of Medicine and Surgery, University of Milano Bicocca, 20900, Monza, Italy
| | - Marco Marchisio
- Department of Medicine and Aging Sciences, University "G. d'Annunzio" Chieti-Pescara, 66100, Chieti, Italy.,Center on Aging Sciences and Translational Medicine (CeSI-MeT), University "G. d'Annunzio" Chieti-Pescara, 66100, Chieti, Italy
| | - Paola Lanuti
- Department of Medicine and Aging Sciences, University "G. d'Annunzio" Chieti-Pescara, 66100, Chieti, Italy.,Center on Aging Sciences and Translational Medicine (CeSI-MeT), University "G. d'Annunzio" Chieti-Pescara, 66100, Chieti, Italy
| | - Michele Ciulla
- Department of Pharmacy, University "G. d'Annunzio", Via dei Vestini, 66100, Chieti, Italy
| | - Antonio Di Stefano
- Department of Pharmacy, University "G. d'Annunzio", Via dei Vestini, 66100, Chieti, Italy
| | - Elena Fioroni
- Laboratorio Analisi Dr. Fioroni, Viale A. de Gasperi, 19, 63074, San Benedetto del Tronto, Italy
| | - Michele Spina
- Laboratorio Analisi Dr. Fioroni, Viale A. de Gasperi, 19, 63074, San Benedetto del Tronto, Italy
| | - Barbara Barboni
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Via Renato Balzarini 1, 64100, Teramo, Italy
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31
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Zhao J, Li D, Fang L. MiR-128-3p suppresses breast cancer cellular progression via targeting LIMK1. Biomed Pharmacother 2019; 115:108947. [PMID: 31078043 DOI: 10.1016/j.biopha.2019.108947] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 04/25/2019] [Accepted: 04/30/2019] [Indexed: 12/16/2022] Open
Abstract
Breast cancer is the most common malignancy in women all over the world. MiRNAs are a type of small noncoding RNA that can regulate various cellular processes via binding different target genes in cancer cells. In this study, we found that miR-128-3p could suppress cellular proliferation and motility abilities of breast cancer. In addition, we found that overexpression of miR-128-3p arrested breast cancer cells in G0/G1 phase by affecting expression of CDK4/CDK6/Cyclin D1 and CDK2/Cyclin E1. Furthermore, we confirmed that LIM domain kinase 1 (LIMK1) is a direct target gene of miR-128-3p and that overexpression of miR-128-3p could suppress the expression levels of LIMK1 and Cofilin 1, which is downstream of LIMK1. TCGA clinical database showed that miR-128-3p was highly expressed in breast cancer patients and that high expression of miR-128-3p indicates a better prognosis of breast cancer. Our findings demonstrated that miR-128-3p could regulate cellular progression of breast cancer via regulating the LIMK1/CFL1 signaling pathway, and this new avenue could broaden existing versions of molecular mechanisms in breast cancer and perhaps represent potential novel direction of breast cancer treatment in the future.
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Affiliation(s)
- Junyong Zhao
- Department of Thyroid and Breast, Division of General Surgery, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, People's Republic of China
| | - Dengfeng Li
- Department of Thyroid and Breast, Division of General Surgery, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, People's Republic of China
| | - Lin Fang
- Department of Thyroid and Breast, Division of General Surgery, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, People's Republic of China.
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32
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Tongpan S, Sukhorum W, Arun S, Sawatphanich T, Iamsaard S. Valproic acid changes the expression of tyrosine‐phosphorylated proteins in rat seminal vesicle. Andrologia 2019; 51:e13303. [DOI: 10.1111/and.13303] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 03/22/2019] [Accepted: 04/03/2019] [Indexed: 01/09/2023] Open
Affiliation(s)
- Saranya Tongpan
- Department of Anatomy, Faculty of Medicine Khon Kaen University Khon Kaen Thailand
| | | | - Supatcharee Arun
- Department of Anatomy, Faculty of Medicine Khon Kaen University Khon Kaen Thailand
| | - Tarinee Sawatphanich
- Department of Anatomy, Faculty of Medicine Khon Kaen University Khon Kaen Thailand
| | - Sitthichai Iamsaard
- Department of Anatomy, Faculty of Medicine Khon Kaen University Khon Kaen Thailand
- Center for Research and Development of Herbal Health Products, Faculty of Pharmaceutical Sciences Khon Kaen University Khon Kaen Thailand
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33
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Lobo V, Parte P. Membrane-bound Glucose regulated protein 78 interacts with alpha-2-macroglobulin to promote actin reorganization in sperm during epididymal maturation. ACTA ACUST UNITED AC 2018; 25:137-155. [DOI: 10.1093/molehr/gay055] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 11/06/2018] [Accepted: 12/24/2018] [Indexed: 12/14/2022]
Affiliation(s)
- Vivian Lobo
- Department of Gamete Immunobiology, ICMR—National Institute for Research in Reproductive Health, Mumbai, India
| | - Priyanka Parte
- Department of Gamete Immunobiology, ICMR—National Institute for Research in Reproductive Health, Mumbai, India
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34
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Romarowski A, Velasco Félix ÁG, Torres Rodríguez P, Gervasi MG, Xu X, Luque GM, Contreras-Jiménez G, Sánchez-Cárdenas C, Ramírez-Gómez HV, Krapf D, Visconti PE, Krapf D, Guerrero A, Darszon A, Buffone MG. Super-resolution imaging of live sperm reveals dynamic changes of the actin cytoskeleton during acrosomal exocytosis. J Cell Sci 2018; 131:jcs.218958. [PMID: 30301778 DOI: 10.1242/jcs.218958] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Accepted: 09/25/2018] [Indexed: 01/14/2023] Open
Abstract
Filamentous actin (F-actin) is a key factor in exocytosis in many cell types. In mammalian sperm, acrosomal exocytosis (denoted the acrosome reaction or AR), a special type of controlled secretion, is regulated by multiple signaling pathways and the actin cytoskeleton. However, the dynamic changes of the actin cytoskeleton in live sperm are largely not understood. Here, we used the powerful properties of SiR-actin to examine actin dynamics in live mouse sperm at the onset of the AR. By using a combination of super-resolution microscopy techniques to image sperm loaded with SiR-actin or sperm from transgenic mice containing Lifeact-EGFP, six regions containing F-actin within the sperm head were revealed. The proportion of sperm possessing these structures changed upon capacitation. By performing live-cell imaging experiments, we report that dynamic changes of F-actin during the AR occur in specific regions of the sperm head. While certain F-actin regions undergo depolymerization prior to the initiation of the AR, others remain unaltered or are lost after exocytosis occurs. Our work emphasizes the utility of live-cell nanoscopy, which will undoubtedly impact the search for mechanisms that underlie basic sperm functions.This article has an associated First Person interview with the first author of the paper.
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Affiliation(s)
- Ana Romarowski
- Instituto de Biología y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires C1428ADN, Argentina
| | - Ángel G Velasco Félix
- Laboratorio Nacional de Microscopía Avanzada, Instituto de Biotecnología, Universidad Nacional Autónoma de México (UNAM), Cuernavaca, Morelos 62210, México
| | - Paulina Torres Rodríguez
- Departamento de Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México (UNAM), Cuernavaca, Morelos 62210, México
| | - María G Gervasi
- Department of Veterinary and Animal Science, Paige Labs, University of Massachusetts, Amherst, MA 01003, USA
| | - Xinran Xu
- Department of Electrical and Computer Engineering, School of Biomedical Engineering, 1301 Campus Delivery, Fort Collins, CO 80523, USA
| | - Guillermina M Luque
- Instituto de Biología y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires C1428ADN, Argentina
| | - Gastón Contreras-Jiménez
- Departamento de Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México (UNAM), Cuernavaca, Morelos 62210, México
| | - Claudia Sánchez-Cárdenas
- Departamento de Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México (UNAM), Cuernavaca, Morelos 62210, México
| | - Héctor V Ramírez-Gómez
- Departamento de Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México (UNAM), Cuernavaca, Morelos 62210, México
| | - Diego Krapf
- Department of Electrical and Computer Engineering, School of Biomedical Engineering, 1301 Campus Delivery, Fort Collins, CO 80523, USA
| | - Pablo E Visconti
- Department of Veterinary and Animal Science, Paige Labs, University of Massachusetts, Amherst, MA 01003, USA
| | - Dario Krapf
- Instituto de Biología Molecular y Celular de Rosario (CONICET-UNR), Rosario, Santa Fe S2000EZP, Argentina
| | - Adán Guerrero
- Laboratorio Nacional de Microscopía Avanzada, Instituto de Biotecnología, Universidad Nacional Autónoma de México (UNAM), Cuernavaca, Morelos 62210, México
| | - Alberto Darszon
- Departamento de Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México (UNAM), Cuernavaca, Morelos 62210, México
| | - Mariano G Buffone
- Instituto de Biología y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires C1428ADN, Argentina
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Luque GM, Dalotto-Moreno T, Martín-Hidalgo D, Ritagliati C, Puga Molina LC, Romarowski A, Balestrini PA, Schiavi-Ehrenhaus LJ, Gilio N, Krapf D, Visconti PE, Buffone MG. Only a subpopulation of mouse sperm displays a rapid increase in intracellular calcium during capacitation. J Cell Physiol 2018; 233:9685-9700. [PMID: 29953592 DOI: 10.1002/jcp.26883] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Accepted: 05/23/2018] [Indexed: 12/11/2022]
Abstract
Mammalian sperm must undergo a functionally defined process called capacitation to be able to fertilize oocytes. They become capacitated in vivo by interacting with the female reproductive tract or in vitro in a defined capacitation medium that contains bovine serum albumin, calcium (Ca2+ ), and bicarbonate (HCO3 - ). In this work, sperm were double stained with propidium iodide and the Ca2+ dye Fluo-4 AM and analyzed by flow cytometry to determine changes in intracellular Ca2+ concentration ([Ca2+ ]i ) in individual live sperm. An increase in [Ca2+ ]i was observed in a subpopulation of capacitated live sperm when compared with noncapacitated ones. Sperm exposed to the capacitating medium displayed a rapid increase in [Ca2+ ]i within 1 min of incubation, which remained sustained for 90 min. These rise in [Ca2+ ]i after 90 min of incubation in the capacitating medium was evidenced by an increase in the normalized median fluorescence intensity. This increase was dependent on the presence of extracellular Ca2+ and, at least in part, reflected the contribution of a new subpopulation of sperm with higher [Ca2+ ]i . In addition, it was determined that the capacitation-associated [Ca2+ ]i increase was dependent of CatSper channels, as sperm derived from CatSper knockout (CatSper KO) or incubated in the presence of CatSper inhibitors failed to increase [Ca2+ ]i . Surprisingly, a minimum increase in [Ca2+ ]i was also observed in CatSper KO sperm suggesting the existence of other Ca2+ transport systems. Altogether, these results indicate that a subpopulation of sperm increases [Ca2+ ]i very rapidly during capacitation mainly due to a CatSper-mediated influx of extracellular Ca2+ .
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Affiliation(s)
- Guillermina M Luque
- Instituto de Biología y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Tomas Dalotto-Moreno
- Instituto de Biología y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - David Martín-Hidalgo
- Department of Veterinary and Animal Science, University of Massachusetts, Amherst, MA
| | - Carla Ritagliati
- Instituto de Biología Molecular y Celular de Rosario (IBR), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Universidad Nacional de Rosario (UNR), Rosario, Argentina
| | - Lis C Puga Molina
- Instituto de Biología y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Ana Romarowski
- Instituto de Biología y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Paula A Balestrini
- Instituto de Biología y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Liza J Schiavi-Ehrenhaus
- Instituto de Biología y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Nicolas Gilio
- Instituto de Biología y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Dario Krapf
- Instituto de Biología Molecular y Celular de Rosario (IBR), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Universidad Nacional de Rosario (UNR), Rosario, Argentina
| | - Pablo E Visconti
- Department of Veterinary and Animal Science, University of Massachusetts, Amherst, MA
| | - Mariano G Buffone
- Instituto de Biología y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
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36
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Balbach M, Beckert V, Hansen JN, Wachten D. Shedding light on the role of cAMP in mammalian sperm physiology. Mol Cell Endocrinol 2018; 468:111-120. [PMID: 29146556 DOI: 10.1016/j.mce.2017.11.008] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Revised: 11/10/2017] [Accepted: 11/10/2017] [Indexed: 12/24/2022]
Abstract
Mammalian fertilization relies on sperm finding the egg and penetrating the egg vestments. All steps in a sperm's lifetime crucially rely on changes in the second messenger cAMP (cyclic adenosine monophosphate). In recent years, it has become clear that signal transduction in sperm is not a continuum, but rather organized in subcellular domains, e.g. the sperm head and the sperm flagellum, with the latter being further separated into the midpiece, principal piece, and endpiece. To understand the underlying signaling pathways controlling sperm function in more detail, experimental approaches are needed that allow to study sperm signaling with spatial and temporal precision. Here, we will give a comprehensive overview on cAMP signaling in mammalian sperm, describing the molecular players involved in these pathways and the sperm functions that are controlled by cAMP. Furthermore, we will highlight recent advances in analyzing and manipulating sperm signaling with spatio-temporal precision using light.
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Affiliation(s)
- Melanie Balbach
- Center of Advanced European Studies and Research (caesar), Department of Molecular Sensory Systems, Bonn, Germany
| | - Vera Beckert
- Institute of Innate Immunity, University Hospital, University of Bonn, Bonn, Germany
| | - Jan N Hansen
- Institute of Innate Immunity, University Hospital, University of Bonn, Bonn, Germany
| | - Dagmar Wachten
- Institute of Innate Immunity, University Hospital, University of Bonn, Bonn, Germany; Center of Advanced European Studies and Research (caesar), Minerva Max Planck Research Group, Molecular Physiology, Bonn, Germany.
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37
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Gervasi MG, Xu X, Carbajal-Gonzalez B, Buffone MG, Visconti PE, Krapf D. The actin cytoskeleton of the mouse sperm flagellum is organized in a helical structure. J Cell Sci 2018; 131:jcs.215897. [PMID: 29739876 DOI: 10.1242/jcs.215897] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Accepted: 04/30/2018] [Indexed: 01/08/2023] Open
Abstract
Conception in mammals is determined by the fusion of a sperm cell with an oocyte during fertilization. Motility is one of the features of sperm that allows them to succeed in fertilization, and their flagellum is essential for this function. Longitudinally, the flagellum can be divided into the midpiece, the principal piece and the end piece. A precise cytoskeletal architecture of the sperm tail is key for the acquisition of fertilization competence. It has been proposed that the actin cytoskeleton plays essential roles in the regulation of sperm motility; however, the actin organization in sperm remains elusive. In the present work, we show that there are different types of actin structures in the sperm tail by using three-dimensional stochastic optical reconstruction microscopy (STORM). In the principal piece, actin is radially distributed between the axoneme and the plasma membrane. The actin-associated proteins spectrin and adducin are also found in these structures. Strikingly, polymerized actin in the midpiece forms a double-helix that accompanies mitochondria. Our findings illustrate a novel specialized structure of actin filaments in a mammalian cell.
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Affiliation(s)
- María G Gervasi
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA 01003, USA
| | - Xinran Xu
- Department of Electrical and Computer Engineering, Colorado State University, Fort Collins, CO 80523, USA
| | | | - Mariano G Buffone
- Instituto de Biología y Medicina Experimental, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), C1428ADN Buenos Aires, Argentina
| | - Pablo E Visconti
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA 01003, USA
| | - Diego Krapf
- Department of Electrical and Computer Engineering, Colorado State University, Fort Collins, CO 80523, USA .,School of Biomedical Engineering, Colorado State University, Fort Collins, CO 80523, USA
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38
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Bernabò N, Valbonetti L, Greco L, Capacchietti G, Ramal Sanchez M, Palestini P, Botto L, Mattioli M, Barboni B. Aminopurvalanol A, a Potent, Selective, and Cell Permeable Inhibitor of Cyclins/Cdk Complexes, Causes the Reduction of in Vitro Fertilizing Ability of Boar Spermatozoa, by Negatively Affecting the Capacitation-Dependent Actin Polymerization. Front Physiol 2017; 8:1097. [PMID: 29312003 PMCID: PMC5744433 DOI: 10.3389/fphys.2017.01097] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Accepted: 12/13/2017] [Indexed: 12/19/2022] Open
Abstract
The adoption of high-througput technologies demonstrated that in mature spermatozoa are present proteins that are thought to be not present or active in sperm cells, such as those involved in control of cell cycle. Here, by using an in silico approach based on the application of networks theory, we found that Cyclins/Cdk complexes could play a central role in signal transduction active during capacitation. Then, we tested this hypothesis in the vitro model. With this approach, spermatozoa were incubated under capacitating conditions in control conditions (CTRL) or in the presence of Aminopurvalanol A a potent, selective and cell permeable inhibitor of Cyclins/Cdk complexes at different concentrations (2, 10, and 20 μM). We found that this treatment caused dose-dependent inhibition of sperm fertilizing ability. We attribute this event to the loss of acrosome integrity due to the inhibition of physiological capacitation-dependent actin polymerization, rather than to a detrimental effect on membrane lipid remodeling or on other signaling pathways such as tubulin reorganization or MAPKs activation. In our opinion, these data could revamp the knowledge on biochemistry of sperm capacitation and could suggest new perspectives in studying male infertility.
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Affiliation(s)
- Nicola Bernabò
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
| | - Luca Valbonetti
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
| | - Luana Greco
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
| | - Giulia Capacchietti
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
| | - Marina Ramal Sanchez
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
| | - Paola Palestini
- School of Medicine and Surgery, University of Milano Bicocca, Monza, Italy
| | - Laura Botto
- School of Medicine and Surgery, University of Milano Bicocca, Monza, Italy
| | - Mauro Mattioli
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy.,Istituto Zooprofilattico Sperimentale dell'Abruzzo e del Molise "G. Caporale", Teramo, Italy
| | - Barbara Barboni
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
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39
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Peverelli E, Catalano R, Giardino E, Treppiedi D, Morelli V, Ronchi CL, Vaczlavik A, Fusco N, Ferrero S, Bertherat J, Beuschlein F, Chiodini I, Arosio M, Spada A, Mantovani G. Cofilin is a cAMP effector in mediating actin cytoskeleton reorganization and steroidogenesis in mouse and human adrenocortical tumor cells. Cancer Lett 2017; 406:54-63. [PMID: 28826686 DOI: 10.1016/j.canlet.2017.07.025] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Revised: 07/20/2017] [Accepted: 07/27/2017] [Indexed: 11/17/2022]
Abstract
cAMP pathway plays a major role in the pathogenesis of cortisol-producing adrenocortical adenomas (CPA). cAMP-induced steroidogenesis is preceded by actin cytoskeleton reorganization, a process regulated by cofilin activity. In this study we investigated cofilin role in mediating cAMP effects on cell morphology and steroidogenesis in adrenocortical tumor cells. We demonstrated that forskolin induced cell rounding and strongly reduced phosphorylated (P)-cofilin/total cofilin ratio in Y1 (-52 ± 16%, p < 0.001) and human CPA cells (-53 ± 18%, p < 0.05). Cofilin silencing significantly reduced both forskolin-induced morphological changes and progesterone production (1.3-fold vs 1.8-fold in controls, p < 0.05), whereas transfection of wild-type or S3A (active), but not S3D (inactive) cofilin, potentiated forskolin effects on cell rounding and increased 3-fold progesterone synthesis with respect to control (p < 0.05). Furthermore, cofilin dephosphorylation by a ROCK inhibitor potentiated forskolin-induced cell rounding and steroidogenesis (2-fold increase vs forskolin alone). Finally, we found a reduced P-cofilin/total cofilin ratio and increased cofilin expression in CPA vs endocrine inactive adenomas by western blot and immunohistochemistry. Overall, these results identified cofilin as a mediator of cAMP effects on both morphological changes and steroidogenesis in mouse and human adrenocortical tumor cells.
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Affiliation(s)
- E Peverelli
- Endocrine Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy; Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy.
| | - R Catalano
- Endocrine Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy; Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| | - E Giardino
- Endocrine Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy; Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| | - D Treppiedi
- Endocrine Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy; Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| | - V Morelli
- Endocrine Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy; Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| | - C L Ronchi
- Department of Internal Medicine I, Division of Endocrinology and Diabetes, University Hospital, University of Wuerzburg, Wuerzburg, Germany
| | - A Vaczlavik
- Institut Cochin, Inserm U1016, CNRS UMR8104, Descartes University, Paris, France; Department of Endocrinology, Reference Center for Rare Adrenal Diseases, Hôpital Cochin, Paris, France
| | - N Fusco
- Division of Pathology, Fondazione IRCCS Ca' Granda-Ospedale Maggiore Policlinico, Milan, Italy; Department of Biomedical, Surgical and Dental Sciences, University of Milan Medical School, Milan, Italy
| | - S Ferrero
- Division of Pathology, Fondazione IRCCS Ca' Granda-Ospedale Maggiore Policlinico, Milan, Italy; Department of Biomedical, Surgical and Dental Sciences, University of Milan Medical School, Milan, Italy
| | - J Bertherat
- Institut Cochin, Inserm U1016, CNRS UMR8104, Descartes University, Paris, France; Department of Endocrinology, Reference Center for Rare Adrenal Diseases, Hôpital Cochin, Paris, France
| | - F Beuschlein
- Medizinische Klinik und Poliklinik IV, Endocrine Research Unit, Klinikum der Universität München, LMU, Munich, Germany
| | - I Chiodini
- Endocrine Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy; Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| | - M Arosio
- Endocrine Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy; Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| | - A Spada
- Endocrine Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy; Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| | - G Mantovani
- Endocrine Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy; Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
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40
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Niikura K, Alam MS, Naruse M, Jimbo M, Moriyama H, Reich A, Wessel GM, Matsumoto M. Protein kinase A activity leads to the extension of the acrosomal process in starfish sperm. Mol Reprod Dev 2017; 84:614-625. [PMID: 28462533 DOI: 10.1002/mrd.22824] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 04/26/2017] [Indexed: 01/04/2023]
Abstract
Acrosomal vesicles (AVs) of sperm undergo exocytosis during the acrosome reaction, which is immediately followed by the actin polymerization-dependent extension of an acrosomal process (AP) in echinoderm sperm. In the starfish Asterias amurensis, a large proteoglycan, acrosome reaction-inducing substance (ARIS), together with asteroidal sperm-activating peptide (asterosap) and/or cofactor for ARIS, induces the acrosome reaction. Asterosap induces a transient elevation of intracellular cGMP and Ca2+ levels, and, together with ARIS, causes a sustained increase in intracellular cAMP and Ca2+ . Yet, the contribution of signaling molecules downstream of cAMP and Ca2+ in inducing AV exocytosis and AP extension remain unknown. A modified acrosome reaction assay was used here to differentiate between AV exocytosis and AP extension in starfish sperm, leading to the discovery that Protein kinase A (PKA) inhibitors block AP extension but not AV exocytosis. Additionally, PKA-mediated phosphorylation of target proteins occurs, and these substrates localize at the base of the AP, demonstrating that PKA activation regulates an AP extension step during the acrosome reaction. The major PKA substrate was further identified, from A. amurensis and Asterias forbesi sperm, as a novel protein containing six PKA phosphorylation motifs. This protein, referred to as PKAS1, likely plays a key role in AP actin polymerization during the acrosome reaction.
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Affiliation(s)
- Keisuke Niikura
- Department of Biological Sciences and Informatics, Keio University, Yokohama, Japan
| | - M Shahanoor Alam
- Department of Biological Sciences and Informatics, Keio University, Yokohama, Japan
| | - Masahiro Naruse
- Department of Biological Sciences and Informatics, Keio University, Yokohama, Japan
| | - Mitsuru Jimbo
- School of Marine Biosciences, Kitasato University, Sagamihara, Kanagawa, Japan
| | - Hideaki Moriyama
- School of Biological Sciences, University of Nebraska-Lincoln, Lincoln, Nebraska
| | - Adrian Reich
- Department of Molecular Biology, Cellular Biology and Biochemistry, Brown University, Providence, Rhode Island
| | - Gary M Wessel
- Department of Molecular Biology, Cellular Biology and Biochemistry, Brown University, Providence, Rhode Island
| | - Midori Matsumoto
- Department of Biological Sciences and Informatics, Keio University, Yokohama, Japan
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41
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Kugathasan P, Waller J, Westrich L, Abdourahman A, Tamm JA, Pehrson AL, Dale E, Gulinello M, Sanchez C, Li Y. In vivo and in vitro effects of vortioxetine on molecules associated with neuroplasticity. J Psychopharmacol 2017; 31:365-376. [PMID: 27678087 DOI: 10.1177/0269881116667710] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Neuroplasticity is fundamental for brain functions, abnormal changes of which are associated with mood disorders and cognitive impairment. Neuroplasticity can be affected by neuroactive medications and by aging. Vortioxetine, a multimodal antidepressant, has shown positive effects on cognitive functions in both pre-clinical and clinical studies. In rodent studies, vortioxetine increases glutamate neurotransmission, promotes dendritic branching and spine maturation, and elevates hippocampal expression of the activity-regulated cytoskeleton-associated protein (Arc/Arg3.1) at the transcript level. The present study aims to assess the effects of vortioxetine on several neuroplasticity-related molecules in different experimental systems. Chronic (1 month) vortioxetine increased Arc/Arg3.1 protein levels in the cortical synaptosomes of young and middle-aged mice. In young mice, this was accompanied by an increase in actin-depolymerizing factor (ADF)/cofilin serine 3 phosphorylation without altering the total ADF/cofilin protein level, and an increase in the GluA1 subunit of the α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) receptor phosphorylation at serine 845 (S845) without altering serine 831 (S831) GluA1 phosphorylation nor the total GluA1 protein level. Similar effects were detected in cultured rat hippocampal neurons: Acute vortioxetine increased S845 GluA1 phosphorylation without changing S831 GluA1 phosphorylation or the total GluA1 protein level. These changes were accompanied by an increase in α subunit of Ca2+/calmodulin-dependent kinase (CaMKIIα) phosphorylation (at threonine 286) without changing the total CaMKIIα protein level in cultured neurons. In addition, chronic (1 month) vortioxetine, but not fluoxetine, restored the age-associated reduction in Arc/Arg3.1 and c-Fos transcripts in the frontal cortex of middle-aged mice. Taken together, these results demonstrated that vortioxetine modulates molecular targets that are related to neuroplasticity.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Yan Li
- 1 Lundbeck Research, Paramus, NJ, USA
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Electroacupuncture Regulates Hippocampal Synaptic Plasticity via miR-134-Mediated LIMK1 Function in Rats with Ischemic Stroke. Neural Plast 2017; 2017:9545646. [PMID: 28116173 PMCID: PMC5237739 DOI: 10.1155/2017/9545646] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Accepted: 11/03/2016] [Indexed: 11/17/2022] Open
Abstract
MircoRNAs (miRs) have been implicated in learning and memory, by regulating LIM domain kinase (LIMK1) to induce synaptic-dendritic plasticity. The study aimed to investigate whether miRNAs/LIMK1 signaling was involved in electroacupuncture- (EA-) mediated synaptic-dendritic plasticity in a rat model of middle cerebral artery occlusion induced cognitive deficit (MICD). Compared to untreatment or non-acupoint-EA treatment, EA at DU20 and DU24 acupoints could shorten escape latency and increase the frequency of crossing platform in Morris water maze test. T2-weighted imaging showed that the MICD rat brain lesions were located in cortex, hippocampus, corpus striatum, and thalamus regions and injured volumes were reduced after EA. Furthermore, we found that the density of dendritic spine and the number of synapses in the hippocampal CA1 pyramidal cells were obviously reduced at Day 14 after MICD. However, synaptic-dendritic loss could be rescued after EA. Moreover, the synaptic-dendritic plasticity was associated with increases of the total LIMK1 and phospho-LIMK1 levels in hippocampal CA1 region, wherein EA decreased the expression of miR-134, negatively regulating LIMK1 to enhance synaptic-dendritic plasticity. Therefore, miR-134-mediated LIMK1 was involved in EA-induced hippocampal synaptic plasticity, which served as a contributor to improving learning and memory during the recovery stage of ischemic stroke.
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Sukhorum W, Iamsaard S. Changes in testicular function proteins and sperm acrosome status in rats treated with valproic acid. Reprod Fertil Dev 2017; 29:1585-1592. [DOI: 10.1071/rd16205] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Accepted: 07/21/2016] [Indexed: 12/21/2022] Open
Abstract
Valproic acid (VPA), an anti-epileptic drug, reduces testosterone levels and sperm quality. However, the degree to which testosterone levels and sperm quality are decreased under VPA treatment needs to be clarified. The aim of the present study was to investigate the testicular proteins involved in testosterone synthesis and spermatogenesis, histopathology and sperm acrosome status in VPA-treated rats. Adult rats were divided into control and experimental groups (n = 8 in each). Rats in the experimental group were treated with 500 mg kg–1, i.p., VPA for 10 consecutive days. Expression of Ki-67, tyrosine phosphorylated proteins and testicular steroidogenic proteins was examined. As expected, VPA-treated rats exhibited adverse changes in almost all reproductive parameters, particularly an increase in precocious acrosome reactions, compared with the control group. In addition, fibrosis of the tunica albuginea and tubule basement membrane was observed in testes from VPA-treated rats. Moreover, the expression of testicular Ki-67, cholesterol side-chain cleavage enzyme (P450scc) and phosphorylated proteins (41, 51 and 83 kDa) was decreased significantly in VPA-treated rats compared with control. In contrast, the expression of steroidogenic acute regulatory proteins in the VPA-treated group was significantly higher than in the control group. In conclusion, VPA treatment changes the expression of testicular proteins responsible for spermatogenesis and testosterone production, resulting in male infertility.
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Angeles-Floriano T, Roa-Espitia AL, Baltiérrez-Hoyos R, Cordero-Martínez J, Elizondo G, Hernández-González EO. Absence of aryl hydrocarbon receptor alters CDC42 expression and prevents actin polymerization during capacitation. Mol Reprod Dev 2016; 83:1015-1026. [DOI: 10.1002/mrd.22736] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Accepted: 09/12/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Tania Angeles-Floriano
- Departamento de Biología Celular; CINVESTAV-IPN; Av. Instituto Politécnico Nacional 2508; CP 07360; México DF México
| | - Ana L. Roa-Espitia
- Departamento de Biología Celular; CINVESTAV-IPN; Av. Instituto Politécnico Nacional 2508; CP 07360; México DF México
| | - Rafael Baltiérrez-Hoyos
- Facultad de Medicina y Cirugía; Universidad Autónoma Benito Juárez de Oaxaca; Oaxaca; Cátedras CONACYT
| | - Joaquin Cordero-Martínez
- Departamento de Biología Celular; CINVESTAV-IPN; Av. Instituto Politécnico Nacional 2508; CP 07360; México DF México
| | - Guillermo Elizondo
- Departamento de Biología Celular; CINVESTAV-IPN; Av. Instituto Politécnico Nacional 2508; CP 07360; México DF México
| | - Enrique O. Hernández-González
- Departamento de Biología Celular; CINVESTAV-IPN; Av. Instituto Politécnico Nacional 2508; CP 07360; México DF México
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Characterization of CD46 and β1 integrin dynamics during sperm acrosome reaction. Sci Rep 2016; 6:33714. [PMID: 27666019 PMCID: PMC5036054 DOI: 10.1038/srep33714] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Accepted: 09/01/2016] [Indexed: 11/25/2022] Open
Abstract
The acrosome reaction (AR) is a process of membrane fusion and lytic enzyme release, which enables sperm to penetrate the egg surroundings. It is widely recognized that specific sperm proteins form an active network prior to fertilization, and their dynamic relocation is crucial for the sperm-egg fusion. The unique presence of the membrane cofactor protein CD46 in the sperm acrosomal membrane was shown, however, its behaviour and connection with other sperm proteins has not been explored further. Using super resolution microscopy, we demonstrated a dynamic CD46 reorganisation over the sperm head during the AR, and its interaction with transmembrane protein integrins, which was confirmed by proximity ligation assay. Furthermore, we propose their joint involvement in actin network rearrangement. Moreover, CD46 and β1 integrins with subunit α3, but not α6, are localized into the apical acrosome and are expected to be involved in signal transduction pathways directing the acrosome stability and essential protein network rearrangements prior to gamete fusion.
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Roa-Espitia AL, Hernández-Rendón ER, Baltiérrez-Hoyos R, Muñoz-Gotera RJ, Cote-Vélez A, Jiménez I, González-Márquez H, Hernández-González EO. Focal adhesion kinase is required for actin polymerization and remodeling of the cytoskeleton during sperm capacitation. Biol Open 2016; 5:1189-99. [PMID: 27402964 PMCID: PMC5051654 DOI: 10.1242/bio.017558] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Several focal adhesion proteins are known to cooperate with integrins to link the extracellular matrix to the actin cytoskeleton; as a result, many intracellular signaling pathways are activated and several focal adhesion complexes are formed. However, how these proteins function in mammalian spermatozoa remains unknown. We confirm the presence of focal adhesion proteins in guinea pig spermatozoa, and we explore their role during capacitation and the acrosome reaction, and their relationship with the actin cytoskeleton. Our results suggest the presence of a focal adhesion complex formed by β1-integrin, focal adhesion kinase (FAK), paxillin, vinculin, talin, and α-actinin in the acrosomal region. Inhibition of FAK during capacitation affected the protein tyrosine phosphorylation associated with capacitation that occurs within the first few minutes of capacitation, which caused the acrosome reaction to become increasingly Ca2+ dependent and inhibited the polymerization of actin. The integration of vinculin and talin into the complex, and the activation of FAK and paxillin during capacitation, suggests that the complex assembles at this time. We identify that vinculin and α-actinin increase their interaction with F-actin while it remodels during capacitation, and that during capacitation focal adhesion complexes are structured. FAK contributes to acrosome integrity, likely by regulating the polymerization and the remodeling of the actin cytoskeleton. Summary: We describe the role of FAK and focal adhesion proteins in capacitation, acrosome reaction, polymerization and remodeling of actin cytoskeleton, and how inhibition of FAK affects sperm physiology.
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Affiliation(s)
- Ana L Roa-Espitia
- Departamento de Biología Celular, Centro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional, México D.F. 07360, México Posgrado en Biología Experimental, Universidad Autónoma Metropolitana-Iztapalapa, México D.F. 09349, México
| | - Eva R Hernández-Rendón
- Departamento de Biología Celular, Centro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional, México D.F. 07360, México
| | - Rafael Baltiérrez-Hoyos
- Universidad Autónoma Benito Juárez de Oaxaca, Facultad de Medicina y Cirugía, Oaxaca, Oaxaca 68120, México
| | | | - Antonieta Cote-Vélez
- Departamento de Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México 62210, Cuernavaca, México
| | - Irma Jiménez
- Posgrado en Biología Experimental, Universidad Autónoma Metropolitana-Iztapalapa, México D.F. 09349, México
| | - Humberto González-Márquez
- Departamento de Ciencias de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, México D.F. 09349, México
| | - Enrique O Hernández-González
- Departamento de Biología Celular, Centro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional, México D.F. 07360, México
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Chen SM, Chen XM, Lu YL, Liu B, Jiang M, Ma YX. Cofilin is correlated with sperm quality and influences sperm fertilizing capacity in humans. Andrology 2016; 4:1064-1072. [PMID: 27369112 DOI: 10.1111/andr.12239] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Revised: 05/18/2016] [Accepted: 05/19/2016] [Indexed: 02/05/2023]
Affiliation(s)
- S. M. Chen
- Department of Medical Genetics; West China Hospital; Sichuan University; Chengdu Sichuan China
- Human Sperm Bank; West China Second University Hospital; Sichuan University; Chengdu Sichuan China
| | - X. M. Chen
- Department of Medical Genetics; West China Hospital; Sichuan University; Chengdu Sichuan China
- Department of Laboratory Medicine; Sichuan Provincial Hospital for Women and Children; Chengdu Sichuan China
| | - Y. L. Lu
- Department of Medical Genetics; West China Hospital; Sichuan University; Chengdu Sichuan China
| | - B. Liu
- Human Sperm Bank; West China Second University Hospital; Sichuan University; Chengdu Sichuan China
| | - M. Jiang
- Human Sperm Bank; West China Second University Hospital; Sichuan University; Chengdu Sichuan China
| | - Y. X. Ma
- Department of Medical Genetics; West China Hospital; Sichuan University; Chengdu Sichuan China
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Delgado-Buenrostro NL, Mújica A, Chiquete-Felix N, Déciga-Alcaraz A, Medina-Reyes EI, Uribe-Carvajal S, Chirino YI. Role of Wasp and the small GTPases RhoA, RhoB, and Cdc42 during capacitation and acrosome reaction in spermatozoa of English guinea pigs. Mol Reprod Dev 2016; 83:927-937. [PMID: 27182927 DOI: 10.1002/mrd.22657] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Accepted: 05/07/2016] [Indexed: 11/08/2022]
Abstract
Cytoskeleton remodeling is necessary for capacitation and the acrosome reaction in spermatozoa. F-actin is located in the acrosome and equatorial region during capacitation, but is relocated in the post-acrosomal region during the acrosome reaction in spermatozoa from bull, rat, mice, and guinea pig. Actin polymerization and relocalization are generally regulated by small GTPases that activate Wasp protein, which coordinates with Arp2/3, profilin I, and profilin II to complete cytoskeletal remodeling. This sequence of events is not completely described in spermatozoa, though. Therefore, the aim of this study was to determine if Wasp interacts with small GTPases (RhoA, RhoB, and Cdc42) and proteins (Arp2/3, profilin I, and profilin II) that co-localize with F-actin during capacitation and the acrosome reaction in English guinea pig spermatozoa obtained from the vas deferens. The spermatozoa were capacitated in calcium-free medium, incubated with an activator or an inhibitor of GTPases, and then induced to acrosome react using calcium. The distribution patterns of F-actin were compared to the patterns of Wasp and its putative interaction partners: Wasp and RhoB, but not RhoA or Cdc42, localization overlap with F-actin during capacitation and the acrosome reaction. Activation of small GTPases localized RhoB to the post-acrosomal region whereas their inhibition prevented acrosome exocytosis. Arp2/3 and profilin II appear to interact with Wasp in the post-acrosomal region and flagellum, while profilin I and Wasp could be found in the equatorial region. Thus, Wasp and F-actin distribution overlap during capacitation and acrosome reaction, and small GTPases play an important role in cytoskeleton remodeling during these processes in spermatozoa. Mol. Reprod. Dev. 83: 927-937, 2016 © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Norma L Delgado-Buenrostro
- Unidad de Biomedicina UBIMED, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Tlalnepantla, Estado de México, CP 54090.,Sección de Bioquímica y Farmacología Humana, Facultad de Estudios Superiores Cuautitlán, Universidad Nacional Autónoma de México, Cuautitlán, Estado de México, CP 54743
| | - Adela Mújica
- Departamento de Biología Celular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, México DF, México, CP 07360
| | - Natalia Chiquete-Felix
- Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, México DF, México, CP 04510
| | - Alejandro Déciga-Alcaraz
- Unidad de Biomedicina UBIMED, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Tlalnepantla, Estado de México, CP 54090.,Programa de Doctorado en Ciencias Biomédicas, Universidad Nacional Autónoma de México, CP 07360
| | - Estefany I Medina-Reyes
- Unidad de Biomedicina UBIMED, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Tlalnepantla, Estado de México, CP 54090.,Programa de Doctorado en Ciencias Biomédicas, Universidad Nacional Autónoma de México, CP 07360
| | - Salvador Uribe-Carvajal
- Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, México DF, México, CP 04510
| | - Yolanda I Chirino
- Unidad de Biomedicina UBIMED, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Tlalnepantla, Estado de México, CP 54090.
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Sperm Capacitation and Acrosome Reaction in Mammalian Sperm. SPERM ACROSOME BIOGENESIS AND FUNCTION DURING FERTILIZATION 2016; 220:93-106. [DOI: 10.1007/978-3-319-30567-7_5] [Citation(s) in RCA: 99] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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