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Hafey MJ, Aleksunes LM, Bridges CC, Brouwer KR, Chien HC, Leslie EM, Hu S, Li Y, Shen J, Sparreboom A, Sprowl J, Tweedie D, Lai Y. Transporters and Toxicity: Insights from the International Transporter Consortium Workshop 4. Clin Pharmacol Ther 2022; 112:527-539. [PMID: 35546260 DOI: 10.1002/cpt.2638] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 04/30/2022] [Indexed: 12/29/2022]
Abstract
Over the last decade, significant progress been made in elucidating the role of membrane transporters in altering drug disposition, with important toxicological consequences due to changes in localized concentrations of compounds. The topic of "Transporters and Toxicity" was recently highlighted as a scientific session at the International Transporter Consortium (ITC) Workshop 4 in 2021. The current white paper is not intended to be an extensive review on the topic of transporters and toxicity but an opportunity to highlight aspects of the role of transporters in various toxicities with clinically relevant implications as covered during the session. This includes a review of the role of solute carrier transporters in anticancer drug-induced organ injury, transporters as key players in organ barrier function, and the role of transporters in metal/metalloid toxicity.
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Affiliation(s)
- Michael J Hafey
- ADME and Discovery Toxicology, Merck & Co., Inc., Rahway, New Jersey, USA
| | - Lauren M Aleksunes
- Department of Pharmacology and Toxicology, Rutgers University, Piscataway, New Jersey, USA
| | - Christy C Bridges
- Department of Biomedical Sciences, Mercer University School of Medicine, Macon, Georgia, USA
| | | | - Huan-Chieh Chien
- Pharmacokinetics and Drug Metabolism, Amgen, Inc., South San Francisco, California, USA
| | - Elaine M Leslie
- Departments of Physiology and Lab Med and Path, Membrane Protein Disease Research Group, University of Alberta, Edmonton, Alberta, Canada
| | - Shuiying Hu
- Division of Outcomes and Translational Sciences, College of Pharmacy, The Ohio State University, Columbus, Ohio, USA
| | - Yang Li
- Division of Pharmaceutics and Pharmacology, College of Pharmacy, The Ohio State University, Columbus, Ohio, USA
| | - Jinshan Shen
- Relay Therapeutics, Cambridge, Massachusetts, USA
| | - Alex Sparreboom
- Division of Pharmaceutics and Pharmacology, College of Pharmacy, The Ohio State University, Columbus, Ohio, USA
| | - Jason Sprowl
- Department of Pharmaceutical Sciences, School of Pharmacy and Pharmaceutical Sciences, University at Buffalo, Buffalo, New York, USA
| | | | - Yurong Lai
- Drug Metabolism, Gilead Sciences Inc., Foster City, California, USA
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2
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Nowicka-Bauer K, Szymczak-Cendlak M. Structure and Function of Ion Channels Regulating Sperm Motility-An Overview. Int J Mol Sci 2021; 22:ijms22063259. [PMID: 33806823 PMCID: PMC8004680 DOI: 10.3390/ijms22063259] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 03/18/2021] [Accepted: 03/19/2021] [Indexed: 12/18/2022] Open
Abstract
Sperm motility is linked to the activation of signaling pathways that trigger movement. These pathways are mainly dependent on Ca2+, which acts as a secondary messenger. The maintenance of adequate Ca2+ concentrations is possible thanks to proper concentrations of other ions, such as K+ and Na+, among others, that modulate plasma membrane potential and the intracellular pH. Like in every cell, ion homeostasis in spermatozoa is ensured by a vast spectrum of ion channels supported by the work of ion pumps and transporters. To achieve success in fertilization, sperm ion channels have to be sensitive to various external and internal factors. This sensitivity is provided by specific channel structures. In addition, novel sperm-specific channels or isoforms have been found with compositions that increase the chance of fertilization. Notably, the most significant sperm ion channel is the cation channel of sperm (CatSper), which is a sperm-specific Ca2+ channel required for the hyperactivation of sperm motility. The role of other ion channels in the spermatozoa, such as voltage-gated Ca2+ channels (VGCCs), Ca2+-activated Cl-channels (CaCCs), SLO K+ channels or voltage-gated H+ channels (VGHCs), is to ensure the activation and modulation of CatSper. As the activation of sperm motility differs among metazoa, different ion channels may participate; however, knowledge regarding these channels is still scarce. In the present review, the roles and structures of the most important known ion channels are described in regard to regulation of sperm motility in animals.
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Affiliation(s)
- Karolina Nowicka-Bauer
- Department of Chemical Physics, Faculty of Chemistry, Adam Mickiewicz University in Poznań, 61-614 Poznan, Poland
- Correspondence:
| | - Monika Szymczak-Cendlak
- Department of Animal Physiology and Development, Faculty of Biology, Adam Mickiewicz University in Poznań, 61-614 Poznan, Poland;
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De La Rosa JAM, García-Castañeda M, Nishigaki T, Gómora JC, Mancilla-Percino T, Ávila G. Interaction of MDIMP with the Voltage-Gated Calcium Channels. Mol Pharmacol 2020; 98:211-221. [PMID: 32587097 DOI: 10.1124/mol.120.119982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Accepted: 06/11/2020] [Indexed: 11/22/2022] Open
Abstract
Amino acid-derived isoindolines are synthetic compounds that were created with the idea of investigating their biological actions. The amino acid moiety was included on the grounds that it may help to avoid toxic effects. Recently, the isoindoline MDIMP was shown to inhibit both cardiac excitation-contraction coupling and voltage-dependent calcium channels. Here, we revealed that MDIMP binds preferentially to low-voltage-activated (LVA) channels. Using a holding potential of -90 mV, the following IC50 values were found (in micromolars): >1000 (CaV2.3), 957 (CaV1.3), 656 (CaV1.2), 219 (CaV3.2), and 132 (CaV3.1). Moreover, the isoindoline also promoted both accelerated inactivation kinetics of high-voltage-activated Ca2+ channels and a modest upregulation of CaV1.3 and CaV2.3. Additional data indicate that although MDIMP binds to the closed state of the channels, it has more preference for the inactivated one. Concerning CaV3.1, the compound did not alter the shape of the instantaneous current-voltage curve, and substituting one or two residues in the selectivity filter drastically increased the IC50 value, suggesting that MDIMP binds to the extracellular side of the pore. However, an outward current failed in removing the inhibition, which implies an alternative mechanism may be involved. The enantiomer (R)-MDIMP [methyl (R)-2-(1,3-dihydroisoindol-2-yl)-4-methylpentanoate], on the other hand, was synthesized and evaluated, but it did not improve the affinity to LVA channels. Implications of these findings are discussed in terms of the possible underlying mechanisms and pharmacological relevance. SIGNIFICANCE STATEMENT: We have studied the regulation of voltage-gated calcium channels by MDIMP, which disrupts excitation-contraction coupling in cardiac myocytes. The latter effect is more potent in atrial than ventricular myocytes, and this could be explained by our results showing that MDIMP preferentially blocks low-voltage-activated channels. Our data also provide mechanistic insights about the blockade and suggest that MDIMP is a promising member of the family of Ca2+ channel blockers, with possible application to the inhibition of subthreshold membrane depolarizations.
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Affiliation(s)
- Juan A M De La Rosa
- Departamento de Bioquímica (J.A.M.D.L.R., M.G.-C., G.Á.) and Departamento de Química (T.M.-P.), Cinvestav-IPN, Mexico City, Mexico and Instituto de Biotecnología (T.N.) and Instituto de Fisiología Celular (J.C.G.), Universidad Nacional Autónoma de México, Cuernavaca, Mexico
| | - Maricela García-Castañeda
- Departamento de Bioquímica (J.A.M.D.L.R., M.G.-C., G.Á.) and Departamento de Química (T.M.-P.), Cinvestav-IPN, Mexico City, Mexico and Instituto de Biotecnología (T.N.) and Instituto de Fisiología Celular (J.C.G.), Universidad Nacional Autónoma de México, Cuernavaca, Mexico
| | - Takuya Nishigaki
- Departamento de Bioquímica (J.A.M.D.L.R., M.G.-C., G.Á.) and Departamento de Química (T.M.-P.), Cinvestav-IPN, Mexico City, Mexico and Instituto de Biotecnología (T.N.) and Instituto de Fisiología Celular (J.C.G.), Universidad Nacional Autónoma de México, Cuernavaca, Mexico
| | - Juan Carlos Gómora
- Departamento de Bioquímica (J.A.M.D.L.R., M.G.-C., G.Á.) and Departamento de Química (T.M.-P.), Cinvestav-IPN, Mexico City, Mexico and Instituto de Biotecnología (T.N.) and Instituto de Fisiología Celular (J.C.G.), Universidad Nacional Autónoma de México, Cuernavaca, Mexico
| | - Teresa Mancilla-Percino
- Departamento de Bioquímica (J.A.M.D.L.R., M.G.-C., G.Á.) and Departamento de Química (T.M.-P.), Cinvestav-IPN, Mexico City, Mexico and Instituto de Biotecnología (T.N.) and Instituto de Fisiología Celular (J.C.G.), Universidad Nacional Autónoma de México, Cuernavaca, Mexico
| | - Guillermo Ávila
- Departamento de Bioquímica (J.A.M.D.L.R., M.G.-C., G.Á.) and Departamento de Química (T.M.-P.), Cinvestav-IPN, Mexico City, Mexico and Instituto de Biotecnología (T.N.) and Instituto de Fisiología Celular (J.C.G.), Universidad Nacional Autónoma de México, Cuernavaca, Mexico
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Garza-López E, Aldana A, Darszon A, Nishigaki T, López-González I. Ca V3.1 channel pore pseudo-symmetry revealed by selectivity filter mutations in its domains I/II. Cell Calcium 2020; 89:102214. [PMID: 32428730 DOI: 10.1016/j.ceca.2020.102214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 04/27/2020] [Accepted: 04/27/2020] [Indexed: 11/30/2022]
Abstract
There is growing evidence indicating that the pore structure of voltage-gated ion channels (VGICs) influences gating besides their conductance. Regarding low voltage-activated (LVA) Ca2+ channels, it has been demonstrated that substitutions of the pore aspartate (D) by a glutamate (D-to-E substitution) in domains III and IV alter channel gating properties such as a positive shift in the channel activation voltage dependence. In the present report, we evaluated the effects of E-to-D substitution in domains I and II on the CaV3.1 channel gating properties. Our results indicate that substitutions in these two domains differentially modify the gating properties of CaV3.1 channels. The channel with a single mutation in domain I (DEDD) presented slower activation and faster inactivation kinetics and a slower recovery from inactivation, as compared with the WT channel. In contrast, the single mutant in domain II (EDDD) presented a small but significant negative shift of activation voltage dependence with faster activation and slower inactivation kinetics. Finally, the double mutant channel (DDDD) presented somehow intermediate properties with respect to the two single mutants but with fastest deactivation kinetics. Overall, our results indicate that single amino acid modification of the selectivity filter of LVA Ca2+ channels in distinct domains differentially influence their gating properties, supporting a pore pseudo-symmetry.
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Affiliation(s)
- Edgar Garza-López
- Universidad Nacional Autónoma de México, Departamento de Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, Cuernavaca Morelos, 62210, México
| | - Andrés Aldana
- Universidad Nacional Autónoma de México, Centro de Ciencias Genómicas, Cuernavaca Morelos, 62210, México; Universidad Nacional Autónoma de México, Centro de Ciencias de la Complejidad, Ciudad de México, 04510, México
| | - Alberto Darszon
- Universidad Nacional Autónoma de México, Departamento de Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, Cuernavaca Morelos, 62210, México
| | - Takuya Nishigaki
- Universidad Nacional Autónoma de México, Departamento de Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, Cuernavaca Morelos, 62210, México
| | - Ignacio López-González
- Universidad Nacional Autónoma de México, Departamento de Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, Cuernavaca Morelos, 62210, México.
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Darszon A, Nishigaki T, López-González I, Visconti PE, Treviño CL. Differences and Similarities: The Richness of Comparative Sperm Physiology. Physiology (Bethesda) 2020; 35:196-208. [PMID: 32293232 DOI: 10.1152/physiol.00033.2019] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Species preservation depends on the success of fertilization. Sperm are uniquely equipped to fulfill this task, and, although several mechanisms are conserved among species, striking functional differences have evolved to contend with particular sperm-egg environmental characteristics. This review highlights similarities and differences in sperm strategies, with examples within internal and external fertilizers, pointing out unresolved issues.
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Affiliation(s)
- Alberto Darszon
- Departamento de Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca Morelos, México
| | - Takuya Nishigaki
- Departamento de Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca Morelos, México
| | - Ignacio López-González
- Departamento de Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca Morelos, México
| | - Pablo E Visconti
- Department of Veterinary and Animal Science, University of Massachusetts, Amherst, Massachusetts
| | - Claudia L Treviño
- Departamento de Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca Morelos, México
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Channels, transporters and receptors for cadmium and cadmium complexes in eukaryotic cells: myths and facts. Biometals 2019; 32:469-489. [DOI: 10.1007/s10534-019-00176-6] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Accepted: 01/21/2019] [Indexed: 12/21/2022]
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Jin SK, Yang WX. Factors and pathways involved in capacitation: how are they regulated? Oncotarget 2018; 8:3600-3627. [PMID: 27690295 PMCID: PMC5356907 DOI: 10.18632/oncotarget.12274] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Accepted: 09/23/2016] [Indexed: 01/07/2023] Open
Abstract
In mammals, fertilization occurs via a comprehensive progression of events. Freshly ejaculated sperm have yet to acquire progressive motility or fertilization ability. They must first undergo a series of biochemical and physiological changes, collectively known as capacitation. Capacitation is a significant prerequisite to fertilization. During the process of capacitation, changes in membrane properties, intracellular ion concentration and the activities of enzymes, together with other protein modifications, induce multiple signaling events and pathways in defined media in vitro or in the female reproductive tract in vivo. These, in turn, stimulate the acrosome reaction and prepare spermatozoa for penetration of the egg zona pellucida prior to fertilization. In the present review, we conclude all mainstream factors and pathways regulate capacitation and highlight their crosstalk. We also summarize the relationship between capacitation and assisted reproductive technology or human disease. In the end, we sum up the open questions and future avenues in this field.
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Affiliation(s)
- Shi-Kai Jin
- The Sperm Laboratory, College of Life Sciences, Zhejiang University, Hangzhou, China
| | - Wan-Xi Yang
- The Sperm Laboratory, College of Life Sciences, Zhejiang University, Hangzhou, China
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