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Wang L, Tsang HY, Yan Z, Tojkander S, Ciuba K, Kogan K, Liu X, Zhao H. LUZP1 regulates the maturation of contractile actomyosin bundles. Cell Mol Life Sci 2024; 81:248. [PMID: 38832964 DOI: 10.1007/s00018-024-05294-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 05/07/2024] [Accepted: 05/25/2024] [Indexed: 06/06/2024]
Abstract
Contractile actomyosin bundles play crucial roles in various physiological processes, including cell migration, morphogenesis, and muscle contraction. The intricate assembly of actomyosin bundles involves the precise alignment and fusion of myosin II filaments, yet the underlying mechanisms and factors involved in these processes remain elusive. Our study reveals that LUZP1 plays a central role in orchestrating the maturation of thick actomyosin bundles. Loss of LUZP1 caused abnormal cell morphogenesis, migration, and the ability to exert forces on the environment. Importantly, knockout of LUZP1 results in significant defects in the concatenation and persistent association of myosin II filaments, severely impairing the assembly of myosin II stacks. The disruption of these processes in LUZP1 knockout cells provides mechanistic insights into the defective assembly of thick ventral stress fibers and the associated cellular contractility abnormalities. Overall, these results significantly contribute to our understanding of the molecular mechanism involved in actomyosin bundle formation and highlight the essential role of LUZP1 in this process.
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Affiliation(s)
- Liang Wang
- Faculty of Biological and Environmental Sciences, University of Helsinki, FI-00014, Helsinki, Finland
- Mental Health Center and National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Hoi Ying Tsang
- Faculty of Biological and Environmental Sciences, University of Helsinki, FI-00014, Helsinki, Finland
| | - Ziyi Yan
- Faculty of Biological and Environmental Sciences, University of Helsinki, FI-00014, Helsinki, Finland
| | - Sari Tojkander
- Department of Veterinary Biosciences, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
| | - Katarzyna Ciuba
- Institute of Biotechnology, University of Helsinki, FI-00014, Helsinki, Finland
| | - Konstantin Kogan
- Institute of Biotechnology, University of Helsinki, FI-00014, Helsinki, Finland
| | - Xiaonan Liu
- Institute of Biotechnology, University of Helsinki, FI-00014, Helsinki, Finland
- Department of Physiology, Faculty of Medical Sciences in Katowice, Medical University of Silesia in Katowice, Katowice, Poland
| | - Hongxia Zhao
- Faculty of Biological and Environmental Sciences, University of Helsinki, FI-00014, Helsinki, Finland.
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Hu S, Wang L, Zheng M, Wang M, Chen B, Lin L. LY333531 attenuates contraction of tumor necrosis factor-α-sensitized human airway smooth muscle cells. J Asthma 2024:1-12. [PMID: 38833524 DOI: 10.1080/02770903.2024.2364810] [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: 11/14/2023] [Accepted: 06/02/2024] [Indexed: 06/06/2024]
Abstract
Objective: Protein kinase C (PKC) has been implicated in the increased contraction of human airway smooth muscle cells (HASMCs) in asthma. Using the three-dimensional collagen gel contraction system, the study aimed to determine the effects of LY333531, a specific inhibitor of the PKC-β isoform, on the contraction of tumor necrosis factor (TNF)-α-sensitized HASMCs.Methods: Cultured HASMCs were divided into five groups: the control group received no treatment, and the cells in the TNF-α group were sensitized with 10 ng/mL TNF-α for 48 hours, while TNF-α was administered to sensitize HASMCs in the presence of 0.1 μM, 0.2 μM, and 0.5 μM LY333531 for 48 hours in the 0.1LY, 0.2LY, and 0.5LY groups, respectively. Following this, HASMCs contraction were stimulated with 1 mM acetylcholine (ACh) for up to 24 h in each group and assessed using a three-dimensional collagen gel contraction assay. Furthermore, western blot and immunofluorescence analysis were performed.Results: The collagen gel contraction assay revealed that TNF-α increased the protein expression of phosphorylated PKC-β2, CPI-17 and MLC, while exacerbating ACh-induced HASMCs contraction. LY333531 significantly attenuated HASMCs contraction and downregulated the protein expression of both p-CPI-17 and p-MLC.Conclusions: At least in part by regulating CPI-17 and MLC phosphorylation, LY333531 attenuates augmented contraction of TNF-α-sensitized HASMCs in a collagen gel contraction system.
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Affiliation(s)
- Shuyu Hu
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University
| | - Liangrong Wang
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University
| | - Miaomiao Zheng
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University
| | - Mengjia Wang
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University
| | - Baihui Chen
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University
| | - Lina Lin
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University
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Weinstein N, Carlsen J, Schulz S, Stapleton T, Henriksen HH, Travnik E, Johansson PI. A Lifelike guided journey through the pathophysiology of pulmonary hypertension-from measured metabolites to the mechanism of action of drugs. Front Cardiovasc Med 2024; 11:1341145. [PMID: 38845688 PMCID: PMC11153715 DOI: 10.3389/fcvm.2024.1341145] [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: 11/19/2023] [Accepted: 04/12/2024] [Indexed: 06/09/2024] Open
Abstract
Introduction Pulmonary hypertension (PH) is a pathological condition that affects approximately 1% of the population. The prognosis for many patients is poor, even after treatment. Our knowledge about the pathophysiological mechanisms that cause or are involved in the progression of PH is incomplete. Additionally, the mechanism of action of many drugs used to treat pulmonary hypertension, including sotatercept, requires elucidation. Methods Using our graph-powered knowledge mining software Lifelike in combination with a very small patient metabolite data set, we demonstrate how we derive detailed mechanistic hypotheses on the mechanisms of PH pathophysiology and clinical drugs. Results In PH patients, the concentration of hypoxanthine, 12(S)-HETE, glutamic acid, and sphingosine 1 phosphate is significantly higher, while the concentration of L-arginine and L-histidine is lower than in healthy controls. Using the graph-based data analysis, gene ontology, and semantic association capabilities of Lifelike, led us to connect the differentially expressed metabolites with G-protein signaling and SRC. Then, we associated SRC with IL6 signaling. Subsequently, we found associations that connect SRC, and IL6 to activin and BMP signaling. Lastly, we analyzed the mechanisms of action of several existing and novel pharmacological treatments for PH. Lifelike elucidated the interplay between G-protein, IL6, activin, and BMP signaling. Those pathways regulate hallmark pathophysiological processes of PH, including vasoconstriction, endothelial barrier function, cell proliferation, and apoptosis. Discussion The results highlight the importance of SRC, ERK1, AKT, and MLC activity in PH. The molecular pathways affected by existing and novel treatments for PH also converge on these molecules. Importantly, sotatercept affects SRC, ERK1, AKT, and MLC simultaneously. The present study shows the power of mining knowledge graphs using Lifelike's diverse set of data analytics functionalities for developing knowledge-driven hypotheses on PH pathophysiological and drug mechanisms and their interactions. We believe that Lifelike and our presented approach will be valuable for future mechanistic studies of PH, other diseases, and drugs.
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Affiliation(s)
- Nathan Weinstein
- CAG Center for Endotheliomics, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Jørn Carlsen
- CAG Center for Endotheliomics, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
- Department of Cardiology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Sebastian Schulz
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Kgs. Lyngby, Denmark
| | - Timothy Stapleton
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Kgs. Lyngby, Denmark
| | - Hanne H. Henriksen
- CAG Center for Endotheliomics, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
- Department of Clinical Immunology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Evelyn Travnik
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Kgs. Lyngby, Denmark
| | - Pär Ingemar Johansson
- CAG Center for Endotheliomics, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
- Department of Clinical Immunology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
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4
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Mendoza-Soto P, Jara C, Torres-Arévalo Á, Oyarzún C, Mardones GA, Quezada-Monrás C, San Martín R. Pharmacological Blockade of the Adenosine A 2B Receptor Is Protective of Proteinuria in Diabetic Rats, through Affecting Focal Adhesion Kinase Activation and the Adhesion Dynamics of Podocytes. Cells 2024; 13:846. [PMID: 38786068 PMCID: PMC11119713 DOI: 10.3390/cells13100846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 04/24/2024] [Accepted: 04/26/2024] [Indexed: 05/25/2024] Open
Abstract
Induction of the adenosine receptor A2B (A2BAR) expression in diabetic glomeruli correlates with an increased abundance of its endogenous ligand adenosine and the progression of kidney dysfunction. Remarkably, A2BAR antagonism protects from proteinuria in experimental diabetic nephropathy. We found that A2BAR antagonism preserves the arrangement of podocytes on the glomerular filtration barrier, reduces diabetes-induced focal adhesion kinase (FAK) activation, and attenuates podocyte foot processes effacement. In spreading assays using human podocytes in vitro, adenosine enhanced the rate of cell body expansion on laminin-coated glass and promoted peripheral pY397-FAK subcellular distribution, while selective A2BAR antagonism impeded these effects and attenuated the migratory capability of podocytes. Increased phosphorylation of the Myosin2A light chain accompanied the effects of adenosine. Furthermore, when the A2BAR was stimulated, the cells expanded more broadly and more staining of pS19 myosin was detected which co-localized with actin cables, suggesting increased contractility potential in cells planted onto a matrix with a stiffness similar to of the glomerular basement membrane. We conclude that A2BAR is involved in adhesion dynamics and contractile actin bundle formation, leading to podocyte foot processes effacement. The antagonism of this receptor may be an alternative to the intervention of glomerular barrier deterioration and proteinuria in the diabetic kidney disease.
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Affiliation(s)
- Pablo Mendoza-Soto
- Molecular Pathology Laboratory, Institute of Biochemistry and Microbiology, Science Faculty, Universidad Austral de Chile, Valdivia 5110566, Chile; (P.M.-S.); (C.J.); (Á.T.-A.); (C.O.)
| | - Claudia Jara
- Molecular Pathology Laboratory, Institute of Biochemistry and Microbiology, Science Faculty, Universidad Austral de Chile, Valdivia 5110566, Chile; (P.M.-S.); (C.J.); (Á.T.-A.); (C.O.)
| | - Ángelo Torres-Arévalo
- Molecular Pathology Laboratory, Institute of Biochemistry and Microbiology, Science Faculty, Universidad Austral de Chile, Valdivia 5110566, Chile; (P.M.-S.); (C.J.); (Á.T.-A.); (C.O.)
| | - Carlos Oyarzún
- Molecular Pathology Laboratory, Institute of Biochemistry and Microbiology, Science Faculty, Universidad Austral de Chile, Valdivia 5110566, Chile; (P.M.-S.); (C.J.); (Á.T.-A.); (C.O.)
| | - Gonzalo A. Mardones
- Institute of Physiology, Medicine Faculty, Universidad Austral de Chile, Valdivia 5090000, Chile;
| | - Claudia Quezada-Monrás
- Tumor Biology Laboratory, Institute of Biochemistry and Microbiology, Science Faculty, Universidad Austral de Chile, Valdivia 5110566, Chile;
- Millennium Institute on Immunology and Immunotherapy, Universidad Austral de Chile, Valdivia 5110566, Chile
| | - Rody San Martín
- Molecular Pathology Laboratory, Institute of Biochemistry and Microbiology, Science Faculty, Universidad Austral de Chile, Valdivia 5110566, Chile; (P.M.-S.); (C.J.); (Á.T.-A.); (C.O.)
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Babou Kammoe RB, Sévigny J. Extracellular nucleotides in smooth muscle contraction. Biochem Pharmacol 2024; 220:116005. [PMID: 38142836 DOI: 10.1016/j.bcp.2023.116005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 12/18/2023] [Accepted: 12/19/2023] [Indexed: 12/26/2023]
Abstract
Extracellular nucleotides and nucleosides are crucial signalling molecules, eliciting diverse biological responses in almost all organs and tissues. These molecules exert their effects by activating specific nucleotide receptors, which are finely regulated by ectonucleotidases that break down their ligands. In this comprehensive review, we aim to elucidate the relevance of extracellular nucleotides as signalling molecules in the context of smooth muscle contraction, considering the modulatory influence of ectonucleotidases on this intricate process. Specifically, we provide a detailed examination of the involvement of extracellular nucleotides in the contraction of non-vascular smooth muscles, including those found in the urinary bladder, the airways, the reproductive system, and the gastrointestinal tract. Furthermore, we present a broader overview of the role of extracellular nucleotides in vascular smooth muscle contraction.
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Affiliation(s)
- Romuald Brice Babou Kammoe
- Centre de Recherche du CHU de Québec - Université Laval, Québec City, QC G1V 4G2, Canada; Département de microbiologie-infectiologie et d'immunologie, Faculté de Médecine, Université Laval, Québec City, QC G1V 0A6, Canada
| | - Jean Sévigny
- Centre de Recherche du CHU de Québec - Université Laval, Québec City, QC G1V 4G2, Canada; Département de microbiologie-infectiologie et d'immunologie, Faculté de Médecine, Université Laval, Québec City, QC G1V 0A6, Canada.
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Cai Z, Zhang Y, Fang RS, Brenner B, Kweon J, Sun C, Goldberg JL, Zhang HF. Multiscale imaging of corneal endothelium damage and Rho-kinase inhibitor application in mouse models of acute ocular hypertension. BIOMEDICAL OPTICS EXPRESS 2024; 15:1102-1114. [PMID: 38404323 PMCID: PMC10890882 DOI: 10.1364/boe.510432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 01/13/2024] [Accepted: 01/15/2024] [Indexed: 02/27/2024]
Abstract
We developed a multiscale optical imaging workflow, integrating and correlating visible-light optical coherence tomography, confocal laser scanning microscopy, and single-molecule localization microscopy to investigate mouse cornea damage from the in-vivo tissue level to the nanoscopic single-molecule level. We used electron microscopy to validate the imaged nanoscopic structures. We imaged wild-type mice and mice with acute ocular hypertension and examined the effects of Rho-kinase inhibitor application. We defined four types of intercellular tight junction structures as healthy, compact, partially-distorted, and fully-distorted types by labeling the zonula occludens-1 protein in the corneal endothelial cell layer. We correlated the statistics of the four types of tight junction structures with cornea thickness and intraocular pressure. We found that the population of fully-distorted tight junctions correlated well with the level of corneal edema, and applying Rho-kinase inhibitor reduced the population of fully-distorted tight junctions under acute ocular hypertension. Together, these data point to the utility of multiscale optical imaging in revealing fundamental biology relevant to disease and therapeutics.
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Affiliation(s)
- Zhen Cai
- Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, USA
- Currently with Department of Ophthalmology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yang Zhang
- Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, USA
- Currently with Program of Polymer and Color Chemistry, Department of Textile Engineering, Chemistry and Science, North Carolina State University, Raleigh, NC 27606, USA
| | - Raymond S. Fang
- Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, USA
| | - Benjamin Brenner
- Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, USA
| | - Junghun Kweon
- Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, USA
| | - Cheng Sun
- Department of Mechanical Engineering, Northwestern University, Evanston, IL 60208, USA
| | - Jeffrey L. Goldberg
- Spencer Center for Vision Research, Byers Eye Institute, Department of Ophthalmology, Stanford University, Palo Alto, CA 94303, USA
| | - Hao F. Zhang
- Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, USA
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Sahinturk S. Cilostazol induces vasorelaxation through the activation of the eNOS/NO/cGMP pathway, prostanoids, AMPK, PKC, potassium channels, and calcium channels. Prostaglandins Other Lipid Mediat 2023; 169:106782. [PMID: 37741358 DOI: 10.1016/j.prostaglandins.2023.106782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 08/02/2023] [Accepted: 09/15/2023] [Indexed: 09/25/2023]
Abstract
OBJECTIVE This study aimed to investigate vasoactive effect mechanisms of cilostazol in rat thoracic aorta. MATERIALS AND METHODS The vessel rings prepared from the thoracic aortas of the male rats were placed in the chambers of the isolated tissue bath system. The resting tone was adjusted to 1 g. Following the equilibration phase, potassium chloride or phenylephrine was used to contract the vessel rings. When achieving a steady contraction, cilostazol was applied cumulatively (10-8-10-4 M). In the presence of potassium channel blockers or signaling pathway inhibitors, the same experimental procedure was performed. RESULTS Cilostazol exhibited a significant vasorelaxant effect in a concentration-dependent manner (pD2: 5.94 ± 0.94) (p < .001). The vasorelaxant effect level of cilostazol was significantly reduced by the endothelial nitric oxide synthase inhibitor L-NAME (10-4 M), soluble guanylate cyclase inhibitor methylene blue (10 µM), cyclooxygenase 1/2 inhibitor indomethacin (5 µM), adenosine monophosphate-activated protein kinase inhibitor compound C (10 µM), non-selective potassium channel blocker tetraethylammonium chloride (10 mM), large-conductance calcium-activated potassium channel blocker iberiotoxin (20 nM), voltage-gated potassium channel blocker 4-Aminopyridine (1 mM), and inward-rectifier potassium channel blocker BaCl2 (30 µM) (p < .001). Moreover, incubation of cilostazol (10-4 M) significantly reduced caffeine (10 mM), cyclopiazonic acid (10 µM), and phorbol 12-myristate 13-acetate-induced (100 µM) vascular contractions (p < .001). CONCLUSIONS In the rat thoracic aorta, the vasodilator action level of cilostazol is quite noticeable. The vasorelaxant effects of cilostazol are mediated by the eNOS/NO/cGMP pathway, prostanoids, AMPK pathway, PKC, potassium channels, and calcium channels.
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Affiliation(s)
- Serdar Sahinturk
- Bursa Uludag University Medicine School, Physiology Department, 16059, Bursa, Turkey.
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8
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Boerhout C, Feenstra R, van de Hoef T, Piek J, Beijk M. Pharmacotherapy in patients with vasomotor disorders. IJC HEART & VASCULATURE 2023; 48:101267. [PMID: 37727753 PMCID: PMC10505589 DOI: 10.1016/j.ijcha.2023.101267] [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: 07/20/2023] [Revised: 08/23/2023] [Accepted: 09/03/2023] [Indexed: 09/21/2023]
Abstract
Background Anginal symptoms in patients with non-obstructive coronary artery disease are frequently related to vasomotor disorders of the coronary circulation. Although frequently overlooked, a distinct diagnosis of different vasomotor disorders can be made by intracoronary function testing. Early detection and treatment seems beneficial, but little evidence is available for the medical treatment of these disorders. Nevertheless, there are several pharmacotherapeutic options available to treat these patients and improve quality of life. Methods & findings We performed an extensive yet non-systematic literature search to explore available pharmacotherapeutic strategies for addressing vasomotor disorders in individuals experiencing angina and non-obstructive coronary artery disease. This article presents a comprehensive overview of therapeutic possibilities for patients exhibiting abnormal vasoconstriction (such as spasm) and abnormal vasodilation (like coronary microvascular dysfunction). Conclusion Treatment of vasomotor disorders can be very challenging, but a general treatment algorithm based on the existing evidence and the best available current practice is feasible.
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Affiliation(s)
| | | | - T.P. van de Hoef
- Heart Center, Amsterdam UMC, Amsterdam, the Netherlands
- Department of Cardiology, University Medical Centre Utrecht, Utrecht, the Netherlands
| | - J.J. Piek
- Heart Center, Amsterdam UMC, Amsterdam, the Netherlands
| | - M.A.M. Beijk
- Heart Center, Amsterdam UMC, Amsterdam, the Netherlands
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9
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P K M, C J, T N, F A L, M Harshan H, R S A, S A. Etiology behind canine uterine inertia: Role of uterine expression of MLCK4, MYH2, and PKC genes. Anim Reprod Sci 2023; 256:107298. [PMID: 37499285 DOI: 10.1016/j.anireprosci.2023.107298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 07/17/2023] [Accepted: 07/18/2023] [Indexed: 07/29/2023]
Abstract
Dystocia is an obstetrical emergency, and primary uterine inertia (PUI) is the major etiological reason among the more prevalent maternal causes in dogs. The present study involved the relative expression analysis of genes associated with myometrial contraction in medium-sized dog breeds with uterine inertia. Dogs without any progress in the parturition process even after four hours of the onset of labor and the absence of uterine contractions were considered to have complete primary uterine inertia (CPUI, n = 9). Dogs that had expelled at least one fetus and made no further progress in parturition in the absence of active uterine contraction were considered to be experiencing partial primary uterine inertia (PPUI, n = 6). Dogs with the fetal cause of dystocia (FCD), i.e., obstructive dystocia, were taken as the third (n = 7) group. Uterine tissue samples were collected during cesarean section in each group, RNA was isolated, and the relative expression of myometrial ACTA2, ACTG2, MLCK4, MYH2, and PKC genes was analyzed. The MLCK4 gene expression was downregulated in CPUI (P ≤ 0.05) and PPUI (P ≤ 0.01) when compared to FCD. The MYH2 gene expression was downregulated in PPUI in comparison to CPUI (P ≤ 0.01) and FCD (P ≤ 0.05). The PKC gene expression was upregulated in PPUI in comparison to FCD and CPUI (P ≤ 0.05). The downregulation of MLCK4 and MYH2 gene expressions recorded in PPUI indicated the possibility of myometrial defects. The possibility of myometrial defects was also observed in CPUI, but to a lesser degree, suggesting other etiologies.
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Affiliation(s)
- Magnus P K
- Department of Animal Reproduction Gynaecology and Obstetrics, College of Veterinary and Animal Sciences Mannuthy, Kerala Veterinary and Animal Sciences University, Thrissur, Kerala, India.
| | - Jayakumar C
- Department of Animal Reproduction Gynaecology and Obstetrics, College of Veterinary and Animal Sciences Mannuthy, Kerala Veterinary and Animal Sciences University, Thrissur, Kerala, India
| | - Naicy T
- Department of Animal Breeding and Genetics, College of Veterinary and Animal Sciences Mannuthy, Kerala Veterinary and Animal Sciences University, Thrissur, Kerala, India
| | - Lali F A
- Department of Animal Breeding and Genetics, College of Veterinary and Animal Sciences Mannuthy, Kerala Veterinary and Animal Sciences University, Thrissur, Kerala, India
| | - Hiron M Harshan
- Department of Animal Reproduction Gynaecology and Obstetrics, College of Veterinary and Animal Sciences Mannuthy, Kerala Veterinary and Animal Sciences University, Thrissur, Kerala, India
| | - Abhilash R S
- Department of Animal Reproduction Gynaecology and Obstetrics, College of Veterinary and Animal Sciences Mannuthy, Kerala Veterinary and Animal Sciences University, Thrissur, Kerala, India
| | - Ajithkumar S
- University Veterinary Hospital and Teaching Veterinary Clinical Complex, Mannuthy, Kerala Veterinary and Animal Sciences University, Thrissur, Kerala, India
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Hu S, Huang R, Keller P, Götz M, Tamalunas A, Weinhold P, Waidelich R, Stief CG, Hennenberg M. Selective inhibition of neurogenic, but not agonist-induced contractions by phospholipase A 2 inhibitors points to presynaptic phospholipase A 2 functions in contractile neurotransmission to human prostate smooth muscle. Neurourol Urodyn 2023; 42:1522-1531. [PMID: 37583250 DOI: 10.1002/nau.25242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 06/28/2023] [Accepted: 06/29/2023] [Indexed: 08/17/2023]
Abstract
BACKGROUND Phospholipases A2 (PLA2 ) may be involved in α1 -adrenergic contraction by formation of thromboxane A2 in different smooth muscle types. However, whether this mechanism occurs with α1 -adrenergic contractions of the prostate, is still unknown. While α1 -adrenoceptor antagonists are the first line option for medical treatment of voiding symptoms in benign prostatic hyperplasia (BPH), improvements are limited, probably by nonadrenergic contractions including thromboxane A2 . Here, we examined effects of PLA2 inhibitors on contractions of human prostate tissues. METHODS Prostate tissues were obtained from radical prostatectomy. Contractions were induced by electric field stimulation (EFS) and by α1 -adrenergic agonists in an organ bath, after application of the cytosolic PLA2 inhibitors ASB14780 and AACOCF3, the secretory PLA2 inhibitor YM26734, the leukotriene receptor antagonist montelukast, or of solvent to controls. RESULTS Frequency-dependent contractions of human prostate tissues induced by EFS were inhibited by 25% at 8 Hz, 38% at 16 Hz and 37% at 32 Hz by ASB14780 (1 µM), and by 32% at 16 Hz and 22% at 32 Hz by AACOCF3 (10 µM). None of both inhibitors affected contractions induced by noradrenaline, phenylephrine or methoxamine. YM26734 (3 µM) and montelukast (0.3 and 1 µM) neither affected EFS-induced contractions, nor contractions by α1 -adrenergic agonists, while all contractions were substantially inhibited by silodosin (100 nM). CONCLUSIONS Our findings suggest presynaptic PLA2 functions in prostate smooth muscle contraction, while contractions induced by α1 -adrenergic agonists occur PLA2 -independent. Lacking sensitivity to montelukast excludes an involvement of PLA2 -derived leukotrienes in promotion of contractile neurotransmission.
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Affiliation(s)
- Sheng Hu
- Department of Urology, University Hospital, LMU Munich, Munich, Germany
| | - Ru Huang
- Department of Urology, University Hospital, LMU Munich, Munich, Germany
| | - Patrick Keller
- Department of Urology, University Hospital, LMU Munich, Munich, Germany
| | - Melanie Götz
- Department of Urology, University Hospital, LMU Munich, Munich, Germany
| | | | - Philipp Weinhold
- Department of Urology, University Hospital, LMU Munich, Munich, Germany
| | | | - Christian G Stief
- Department of Urology, University Hospital, LMU Munich, Munich, Germany
| | - Martin Hennenberg
- Department of Urology, University Hospital, LMU Munich, Munich, Germany
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Sousa-Ortega A, Vázquez-Marín J, Sanabria-Reinoso E, Corbacho J, Polvillo R, Campoy-López A, Buono L, Loosli F, Almuedo-Castillo M, Martínez-Morales JR. A Yap-dependent mechanoregulatory program sustains cell migration for embryo axis assembly. Nat Commun 2023; 14:2804. [PMID: 37193708 DOI: 10.1038/s41467-023-38482-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 05/04/2023] [Indexed: 05/18/2023] Open
Abstract
The assembly of the embryo's primary axis is a fundamental landmark for the establishment of the vertebrate body plan. Although the morphogenetic movements directing cell convergence towards the midline have been described extensively, little is known on how gastrulating cells interpret mechanical cues. Yap proteins are well-known transcriptional mechanotransducers, yet their role in gastrulation remains elusive. Here we show that the double knockout of yap and its paralog yap1b in medaka results in an axis assembly failure, due to reduced displacement and migratory persistence in mutant cells. Accordingly, we identified genes involved in cytoskeletal organization and cell-ECM adhesion as potentially direct Yap targets. Dynamic analysis of live sensors and downstream targets reveal that Yap is acting in migratory cells, promoting cortical actin and focal adhesions recruitment. Our results indicate that Yap coordinates a mechanoregulatory program to sustain intracellular tension and maintain the directed cell migration for embryo axis development.
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Affiliation(s)
- Ana Sousa-Ortega
- Centro Andaluz de Biología del Desarrollo (CSIC/UPO/JA), 41013, Sevilla, Spain
| | | | | | - Jorge Corbacho
- Centro Andaluz de Biología del Desarrollo (CSIC/UPO/JA), 41013, Sevilla, Spain
| | - Rocío Polvillo
- Centro Andaluz de Biología del Desarrollo (CSIC/UPO/JA), 41013, Sevilla, Spain
| | | | - Lorena Buono
- Centro Andaluz de Biología del Desarrollo (CSIC/UPO/JA), 41013, Sevilla, Spain
| | - Felix Loosli
- Institute of Biological and Chemical Systems, Biological Information Processing (IBCS-BIP), Karlsruhe Institute of Technology, Eggenstein-Leopoldshafen, Germany
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12
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Phelps C, Chess-Williams R, Moro C. The role of intracellular calcium and Rho kinase pathways in G protein-coupled receptor-mediated contractions of urinary bladder urothelium and lamina propria. Am J Physiol Cell Physiol 2023; 324:C787-C797. [PMID: 36689673 PMCID: PMC10027080 DOI: 10.1152/ajpcell.00441.2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The influence of extracellular and intracellular calcium on smooth muscle contractile activity varies between organs. In response to G protein-coupled receptor (GPCR) stimulation, the urinary bladder detrusor muscle has shown a 70% dependence on extracellular calcium, whereas the urothelium and lamina propria (U&LP) has a 20%-50% dependence. However, as this only accounts for partial contractile activity, the contribution of intracellular calcium and calcium sensitization pathways remains unclear. This study assessed the role of intracellular signaling pathways on GPCR-mediated urinary bladder U&LP contraction. Porcine U&LP responses to activation of the Gq/11-coupled muscarinic, histamine, 5-hydroxytryptamine (serotonin), neurokinin, prostaglandin, and angiotensin II receptors were assessed with three selective inhibitors of store-released intracellular calcium, 2-aminoethyl diphenylborinate (2-APB), cyclopiazonic acid (CPA), and ruthenium red, and three Rho kinase inhibitors, fasudil, Y-27632, and GSK269962. There was no discernible impact on receptor agonist-induced contractions of the U&LP after blocking intracellular calcium pathways, suggesting that this tissue is more sensitive to alterations in the availability of extracellular calcium. However, an alternative mechanism of action for GPCR-mediated contraction was identified to be the activation of Rho kinase, such as when Y-27632 significantly reduced the GPCR-mediated contractile activity of the U&LP by approximately 50% (P < 0.05, n = 8). This suggests that contractile responses of the bladder U&LP do not involve a significant release of calcium from intracellular stores, but that Gq/11-coupled receptor activation causes calcium sensitization via Rho kinase. This study highlights a key role for Rho kinase in the urinary bladder, which may provide a novel target in the future pharmaceutical management of bladder contractile disorders.
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Affiliation(s)
- Charlotte Phelps
- Centre for Urology Research, Faculty of Health Sciences and Medicine, Bond University, Gold Coast, Queensland, Australia
| | - Russ Chess-Williams
- Centre for Urology Research, Faculty of Health Sciences and Medicine, Bond University, Gold Coast, Queensland, Australia
| | - Christian Moro
- Centre for Urology Research, Faculty of Health Sciences and Medicine, Bond University, Gold Coast, Queensland, Australia
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Río-Bergé C, Cong Y, Reggiori F. Getting on the right track: Interactions between viruses and the cytoskeletal motor proteins. Traffic 2023; 24:114-130. [PMID: 35146839 DOI: 10.1111/tra.12835] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 02/06/2022] [Accepted: 02/07/2022] [Indexed: 11/29/2022]
Abstract
The cytoskeleton is an essential component of the cell and it is involved in multiple physiological functions, including intracellular organization and transport. It is composed of three main families of proteinaceous filaments; microtubules, actin filaments and intermediate filaments and their accessory proteins. Motor proteins, which comprise the dynein, kinesin and myosin superfamilies, are a remarkable group of accessory proteins that mainly mediate the intracellular transport of cargoes along with the cytoskeleton. Like other cellular structures and pathways, viruses can exploit the cytoskeleton to promote different steps of their life cycle through associations with motor proteins. The complexity of the cytoskeleton and the differences among viruses, however, has led to a wide diversity of interactions, which in most cases remain poorly understood. Unveiling the details of these interactions is necessary not only for a better comprehension of specific infections, but may also reveal new potential drug targets to fight dreadful diseases such as rabies disease and acquired immunodeficiency syndrome (AIDS). In this review, we describe a few examples of the mechanisms that some human viruses, that is, rabies virus, adenovirus, herpes simplex virus, human immunodeficiency virus, influenza A virus and papillomavirus, have developed to hijack dyneins, kinesins and myosins.
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Affiliation(s)
- Clàudia Río-Bergé
- Department of Biomedical Sciences of Cells & Systems, Molecular Cell Biology Section, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Yingying Cong
- Department of Biomedical Sciences of Cells & Systems, Molecular Cell Biology Section, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Fulvio Reggiori
- Department of Biomedical Sciences of Cells & Systems, Molecular Cell Biology Section, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
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14
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Li J, Zhang M, He Y, Du YH, Zhang XZ, Georgi R, Kolberg B, Xu YL. Molecular Mechanism of Electroacupuncture Regulating Cerebral Arterial Contractile Protein in Rats with Cerebral Infarction Based on MLCK Pathway. Chin J Integr Med 2023; 29:61-68. [PMID: 35344120 DOI: 10.1007/s11655-022-3468-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/08/2021] [Indexed: 12/24/2022]
Abstract
OBJECTIVE To explore the effect of electroacupuncture (EA) intervention on the vasoconstriction of cerebral artery smooth muscle cells after cerebral infarction. METHODS Male Wistar rats were randomly divided into 3 groups by a random number table: the model group (n=24), the EA group (n=24), and the normal group (n=6). The model and the EA groups were divided into different time subgroups at 0.5, 1, 3, and 6 h after middle cerebral artery occlusion (MCAO), with 6 rats in each subgroup. MCAO model was established using intraluminal suture occlusion method. The EA group was given EA treatment at acupoint Shuigou (GV 26) instantly after MCAO for 20 min. The contents of cerebrovascular smooth muscle MLCK, the 3 subunits of myosin light chain phosphatase (MLCP) MYPT1, PP1c-δ and M20, as well as myosin-ATPase activity were detected using immunohistochemistry and Western blotting. RESULTS The overall expression level of the MYPT1 and PP1c-δ in the model group was significantly higher (P<0.01). After EA intervention, the 0.5 h group expression level was close to that of the normal group (P>0.05), and the other subgroups were still significantly higher than the normal group (P<0.01). After EA intervention, the expression level of each subgroup was significantly lower than the corresponding model group. There was a significant difference between the 0.5 and 1 h subgroups (P<0.01), while a difference was also observed between the 3 and 6 h subgroups (P<0.05). The dynamic change rule gradually increased with the prolongation of infarction time within 6 h after infarction. CONCLUSION EA intervention can inhibit contraction of cerebral vascular smooth muscle cells and regulate smooth muscle relaxation by regulating MLCK pathway.
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Affiliation(s)
- Jing Li
- Institute of Acupuncture and Moxibustion, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, 300193, China
| | - Min Zhang
- Institute of Acupuncture and Moxibustion, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, 300193, China
| | - Ying He
- Institute of Acupuncture and Moxibustion, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, 300193, China
| | - Yuan-Hao Du
- Institute of Acupuncture and Moxibustion, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, 300193, China.
| | - Xue-Zhu Zhang
- Institute of Acupuncture and Moxibustion, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, 300193, China
| | - Rainer Georgi
- Max Planck Institute for Medical Research, Heidelberg, 69120, Germany
| | | | - Yan-Long Xu
- Department of Acupuncture and Moxibustion, Gansu Provincial Hospital of Traditional Chinese Medicine, Lanzhou, 730050, China
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15
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Pillay LM, Yano JJ, Davis AE, Butler MG, Ezeude MO, Park JS, Barnes KA, Reyes VL, Castranova D, Gore AV, Swift MR, Iben JR, Kenton MI, Stratman AN, Weinstein BM. In vivo dissection of Rhoa function in vascular development using zebrafish. Angiogenesis 2022; 25:411-434. [PMID: 35320450 DOI: 10.1007/s10456-022-09834-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2021] [Accepted: 02/22/2022] [Indexed: 12/27/2022]
Abstract
The small monomeric GTPase RHOA acts as a master regulator of signal transduction cascades by activating effectors of cellular signaling, including the Rho-associated protein kinases ROCK1/2. Previous in vitro cell culture studies suggest that RHOA can regulate many critical aspects of vascular endothelial cell (EC) biology, including focal adhesion, stress fiber formation, and angiogenesis. However, the specific in vivo roles of RHOA during vascular development and homeostasis are still not well understood. In this study, we examine the in vivo functions of RHOA in regulating vascular development and integrity in zebrafish. We use zebrafish RHOA-ortholog (rhoaa) mutants, transgenic embryos expressing wild type, dominant negative, or constitutively active forms of rhoaa in ECs, pharmacological inhibitors of RHOA and ROCK1/2, and Rock1 and Rock2a/b dgRNP-injected zebrafish embryos to study the in vivo consequences of RHOA gain- and loss-of-function in the vascular endothelium. Our findings document roles for RHOA in vascular integrity, developmental angiogenesis, and vascular morphogenesis in vivo, showing that either too much or too little RHOA activity leads to vascular dysfunction.
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Affiliation(s)
- Laura M Pillay
- Division of Developmental Biology, National Institute of Child Health and Human Development, National Institutes of Health, 6 Center Dr. Bethesda, Bethesda, MD, 20892, USA
| | - Joseph J Yano
- Division of Developmental Biology, National Institute of Child Health and Human Development, National Institutes of Health, 6 Center Dr. Bethesda, Bethesda, MD, 20892, USA
- Department of Cell and Molecular Biology, University of Pennsylvania, 440 Curie Blvd, Philadelphia, PA, 19104, USA
| | - Andrew E Davis
- Division of Developmental Biology, National Institute of Child Health and Human Development, National Institutes of Health, 6 Center Dr. Bethesda, Bethesda, MD, 20892, USA
| | - Matthew G Butler
- Division of Developmental Biology, National Institute of Child Health and Human Development, National Institutes of Health, 6 Center Dr. Bethesda, Bethesda, MD, 20892, USA
| | - Megan O Ezeude
- Division of Developmental Biology, National Institute of Child Health and Human Development, National Institutes of Health, 6 Center Dr. Bethesda, Bethesda, MD, 20892, USA
| | - Jong S Park
- Division of Developmental Biology, National Institute of Child Health and Human Development, National Institutes of Health, 6 Center Dr. Bethesda, Bethesda, MD, 20892, USA
| | - Keith A Barnes
- Division of Developmental Biology, National Institute of Child Health and Human Development, National Institutes of Health, 6 Center Dr. Bethesda, Bethesda, MD, 20892, USA
| | - Vanessa L Reyes
- Division of Developmental Biology, National Institute of Child Health and Human Development, National Institutes of Health, 6 Center Dr. Bethesda, Bethesda, MD, 20892, USA
| | - Daniel Castranova
- Division of Developmental Biology, National Institute of Child Health and Human Development, National Institutes of Health, 6 Center Dr. Bethesda, Bethesda, MD, 20892, USA
| | - Aniket V Gore
- Division of Developmental Biology, National Institute of Child Health and Human Development, National Institutes of Health, 6 Center Dr. Bethesda, Bethesda, MD, 20892, USA
| | - Matthew R Swift
- Division of Developmental Biology, National Institute of Child Health and Human Development, National Institutes of Health, 6 Center Dr. Bethesda, Bethesda, MD, 20892, USA
| | - James R Iben
- Division of Developmental Biology, National Institute of Child Health and Human Development, National Institutes of Health, 6 Center Dr. Bethesda, Bethesda, MD, 20892, USA
| | - Madeleine I Kenton
- Division of Developmental Biology, National Institute of Child Health and Human Development, National Institutes of Health, 6 Center Dr. Bethesda, Bethesda, MD, 20892, USA
| | - Amber N Stratman
- Division of Developmental Biology, National Institute of Child Health and Human Development, National Institutes of Health, 6 Center Dr. Bethesda, Bethesda, MD, 20892, USA
- Department of Cell Biology and Physiology, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Brant M Weinstein
- Division of Developmental Biology, National Institute of Child Health and Human Development, National Institutes of Health, 6 Center Dr. Bethesda, Bethesda, MD, 20892, USA.
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16
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Tamalunas A, Wendt A, Springer F, Ciotkowska A, Rutz B, Wang R, Huang R, Liu Y, Schulz H, Ledderose S, Magistro G, Stief CG, Hennenberg M. Inhibition of Human Prostate and Bladder Smooth Muscle Contraction, Vasoconstriction of Porcine Renal and Coronary Arteries, and Growth-Related Functions of Prostate Stromal Cells by Presumed Small Molecule Gαq/11 Inhibitor, YM-254890. Front Physiol 2022; 13:884057. [PMID: 35677088 PMCID: PMC9168773 DOI: 10.3389/fphys.2022.884057] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 05/04/2022] [Indexed: 11/13/2022] Open
Abstract
Introduction: Lower urinary tract symptoms (LUTS) involve benign prostatic hyperplasia (BPH) and overactive bladder (OAB). Standard-of-care medical treatment includes α1-blockers and antimuscarinics for reduction of prostate and detrusor smooth muscle tone, respectively, and 5α-reductase inhibitors (5-ARI) to prevent prostate growth. Current medications are marked by high discontinuation rates due to unfavourable balance between efficacy and treatment-limiting side effects, ranging from dry mouth for antimuscarinics to cardiovascular dysregulation and a tendency to fall for α1-blockers, which results from hypotension, due to vasorelaxation. Agonist-induced smooth muscle contractions are caused by activation of receptor-coupled G-proteins. However, little is known about receptor- and organ-specific differences in coupling to G-proteins. With YM-254890, a small molecule inhibitor with presumed specificity for Gαq/11 became recently available. Here, we investigated effects of YM-254890 on prostate, bladder and vascular smooth muscle contraction, and on growth-related functions in prostate stromal cells.Methods: Contractions of human prostate and detrusor tissues, porcine renal and coronary arteries were induced in an organ bath. Proliferation (EdU assay), growth (colony formation), apoptosis and cell death (flow cytometry), viability (CCK-8) and actin organization (phalloidin staining) were studied in cultured human prostate stromal cells (WPMY-1).Results: Contractions by α1-adrenergic agonists, U46619, endothelin-1, and neurogenic contractions were nearly completely inhibited by YM-254890 (30 nM) in prostate tissues. Contractions by cholinergic agonists, U46619, endothelin-1, and neurogenic contractions were only partly inhibited in detrusor tissues. Contractions by α1-adrenergic agonists, U46619, endothelin-1, and neurogenic contractions were strongly, but not fully inhibited in renal arteries. Contractions by cholinergic agonists were completely, but by U46619 and endothelin-1 only strongly inhibited, and neurogenic contractions reduced by half in coronary arteries. YM-254890 had no effect on agonist-independent contractions induced by highmolar (80 mM) potassium chloride (KCl). Neurogenic detrusor contractions were fully sensitive to tetrodotoxin. In WPMY-1 cells, YM-254890 caused breakdown of actin polymerization and organization, and obvious, but clearly limited decreases of proliferation rate, colony formation and viability, and slightly increased apoptosis.Conclusion: Intracellular post-receptor signaling pathways are shared by Gαq-coupled contractile receptors in multiple smooth muscle-rich organs, but to different extent. While inhibition of Gαq/11 causes actin breakdown, anti-proliferative effects were detectable but clearly limited. Together this may aid in developing future pharmaceutical targets for LUTS and antihypertensive medication.
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Affiliation(s)
- Alexander Tamalunas
- Department of Urology, University Hospital, LMU Munich, Munich, Germany
- *Correspondence: Alexander Tamalunas,
| | - Amin Wendt
- Department of Urology, University Hospital, LMU Munich, Munich, Germany
| | - Florian Springer
- Department of Urology, University Hospital, LMU Munich, Munich, Germany
| | - Anna Ciotkowska
- Department of Urology, University Hospital, LMU Munich, Munich, Germany
| | - Beata Rutz
- Department of Urology, University Hospital, LMU Munich, Munich, Germany
| | - Ruixiao Wang
- Department of Urology, University Hospital, LMU Munich, Munich, Germany
| | - Ru Huang
- Department of Urology, University Hospital, LMU Munich, Munich, Germany
| | - Yuhan Liu
- Department of Urology, University Hospital, LMU Munich, Munich, Germany
| | - Heiko Schulz
- Department of Pathology, University Hospital Munich, LMU Munich, Munich, Germany
| | - Stephan Ledderose
- Department of Pathology, University Hospital Munich, LMU Munich, Munich, Germany
| | - Giuseppe Magistro
- Department of Urology, University Hospital, LMU Munich, Munich, Germany
| | | | - Martin Hennenberg
- Department of Urology, University Hospital, LMU Munich, Munich, Germany
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17
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Physiological Overview of the Potential Link between the UPS and Ca2+ Signaling. Antioxidants (Basel) 2022; 11:antiox11050997. [PMID: 35624861 PMCID: PMC9137615 DOI: 10.3390/antiox11050997] [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: 03/21/2022] [Revised: 05/10/2022] [Accepted: 05/17/2022] [Indexed: 02/04/2023] Open
Abstract
The ubiquitin–proteasome system (UPS) is the main proteolytic pathway by which damaged target proteins are degraded after ubiquitination and the recruit of ubiquitinated proteins, thus regulating diverse physiological functions and the maintenance in various tissues and cells. Ca2+ signaling is raised by oxidative or ER stress. Although the basic function of the UPS has been extensively elucidated and has been continued to define its mechanism, the precise relationship between the UPS and Ca2+ signaling remains unclear. In the present review, we describe the relationship between the UPS and Ca2+ signaling, including Ca2+-associated proteins, to understand the end point of oxidative stress. The UPS modulates Ca2+ signaling via the degradation of Ca2+-related proteins, including Ca2+ channels and transporters. Conversely, the modulation of UPS is driven by increases in the intracellular Ca2+ concentration. The multifaceted relationship between the UPS and Ca2+ plays critical roles in different tissue systems. Thus, we highlight the potential crosstalk between the UPS and Ca2+ signaling by providing an overview of the UPS in different organ systems and illuminating the relationship between the UPS and autophagy.
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18
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Beqiraj-Zeqiraj Q, Thaçi Q, Sahiti F, Kovač Z, Raffay TM, Sopi RB. Rho-kinase inhibitors protect against neonatal hyperoxia-induced airway hyperreactivity in a rat pup model: Role of prostaglandin F 2α. Pediatr Pulmonol 2022; 57:1229-1237. [PMID: 35088947 DOI: 10.1002/ppul.25848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 01/06/2022] [Accepted: 01/26/2022] [Indexed: 11/06/2022]
Abstract
BACKGROUND Oxygen therapy in preterm neonates is associated with airway hyperreactivity. The role of Rho/Rho-kinase smooth muscle signaling in hyperoxia-induced airway hyperreactivity remains understudied. We hypothesized that inhibition of Rho-kinase will attenuate airway hyperreactivity induced by neonatal hyperoxia. METHODS Newborn rats were raised in hyperoxia (>95% O2 ) or ambient air (AA) for 7 days. Subgroups were injected with a Rho-kinase inhibitor: Y-27632 (10 mg·kg-1 ·day-1 ) or fasudil (10 mg·kg-1 ·day-1 ), or a FP receptor antagonist - AS604872 (30 mg·kg-1 ·day-1 ). After exposures, tracheal cylinders were prepared for in vitro wire myography. Contraction to methacholine or PGF2α was measured in the presence or absence of tissue-bath Y-27632, fasudil, or AS604872. Lung PGF2α levels, Rho-kinase protein level and Rho-kinase 1 activity were measured by ELISA. RESULTS Tracheal smooth muscle contraction was significantly greater in hyperoxic compared to AA groups. Both, Y-27632 and fasudil significantly decreased contractility to MCh or PGF2α in hyperoxic groups versus hyperoxic controls (p < 0.001), but did not alter AA group responses. Inhibition of FP receptors attenuated responses to PGF2α . Hyperoxia significantly increased lung PGF2α compared to AA (p < 0.01), but Rho-kinase inhibition did not influence PGF2α level. Rho-kinase protein level (p < 0.001) and activity (p < 0.01), were increased by hyperoxia, but blockade of FP receptor reduced the Rho-kinase 1 activity (p < 0.05) under hyperoxic condition. CONCLUSIONS This study demonstrates an active role of Rho/Rho-kinase signaling on hyperoxia-induced airway hyperreactivity. These findings suggest that Rho-kinase inhibitors might serve as an effective therapy for hyperoxia-induced airway hyperreactivity.
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Affiliation(s)
- Qendresa Beqiraj-Zeqiraj
- Department of Pathophysiology, Faculty of Medicine, University of Prishtina, Prishtina, Kosovo.,Pediatric Clinic, University Clinical Centre of Kosovo, Prishtina, Kosovo
| | - Qëndrim Thaçi
- Department of Premedical Courses, Faculty of Medicine, University of Prishtina, Prishtina, Kosovo
| | - Floran Sahiti
- Department of Premedical Courses, Faculty of Medicine, University of Prishtina, Prishtina, Kosovo.,Comprehensive Heart Failure Center, University and University Hospital Würzburg, Würzburg, Germany
| | - Zdenko Kovač
- Department of Pathophysiology, School of Medicine, University of Zagreb, Zagreb, Croatia
| | - Thomas M Raffay
- Department of Pediatrics, Rainbow Babies and Children's Hospital, Case Western Reserve University, Cleveland, Ohio, USA
| | - Ramadan B Sopi
- Department of Premedical Courses, Faculty of Medicine, University of Prishtina, Prishtina, Kosovo
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19
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Daoud F, Arévalo Martinez M, Holmberg J, Alajbegovic A, Ali N, Rippe C, Swärd K, Albinsson S. YAP and TAZ in Vascular Smooth Muscle Confer Protection Against Hypertensive Vasculopathy. Arterioscler Thromb Vasc Biol 2022; 42:428-443. [PMID: 35196875 PMCID: PMC8939708 DOI: 10.1161/atvbaha.121.317365] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND Hypertension remains a major risk factor for cardiovascular diseases, but the underlying mechanisms are not well understood. We hypothesize that appropriate mechanotransduction and contractile function in vascular smooth muscle cells are crucial to maintain vascular wall integrity. The Hippo pathway effectors YAP (yes-associated protein 1) and TAZ (WW domain containing transcription regulator 1) have been identified as mechanosensitive transcriptional coactivators. However, their role in vascular smooth muscle cell mechanotransduction has not been investigated in vivo. METHODS We performed physiological and molecular analyses utilizing an inducible smooth muscle-specific YAP/TAZ knockout mouse model. RESULTS Arteries lacking YAP/TAZ have reduced agonist-mediated contraction, decreased myogenic response, and attenuated stretch-induced transcriptional regulation of smooth muscle markers. Moreover, in established hypertension, YAP/TAZ knockout results in severe vascular lesions in small mesenteric arteries characterized by neointimal hyperplasia, elastin degradation, and adventitial thickening. CONCLUSIONS This study demonstrates a protective role of YAP/TAZ against hypertensive vasculopathy.
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Affiliation(s)
- Fatima Daoud
- Department of Experimental Medical Science (F.D., M.A.M., J.H., A.A., C.R., K.S., S.A.), Lund University, Sweden
| | - Marycarmen Arévalo Martinez
- Department of Experimental Medical Science (F.D., M.A.M., J.H., A.A., C.R., K.S., S.A.), Lund University, Sweden
| | - Johan Holmberg
- Department of Experimental Medical Science (F.D., M.A.M., J.H., A.A., C.R., K.S., S.A.), Lund University, Sweden
| | - Azra Alajbegovic
- Department of Experimental Medical Science (F.D., M.A.M., J.H., A.A., C.R., K.S., S.A.), Lund University, Sweden
| | - Neserin Ali
- Department of Clinical Sciences Lund, Orthopaedics, Clinical Epidemiology Unit (N.A.), Lund University, Sweden
| | - Catarina Rippe
- Department of Experimental Medical Science (F.D., M.A.M., J.H., A.A., C.R., K.S., S.A.), Lund University, Sweden
| | - Karl Swärd
- Department of Experimental Medical Science (F.D., M.A.M., J.H., A.A., C.R., K.S., S.A.), Lund University, Sweden
| | - Sebastian Albinsson
- Department of Experimental Medical Science (F.D., M.A.M., J.H., A.A., C.R., K.S., S.A.), Lund University, Sweden
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20
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Erdener ŞE, Küreli G, Dalkara T. Contractile apparatus in CNS capillary pericytes. NEUROPHOTONICS 2022; 9:021904. [PMID: 35106320 PMCID: PMC8785978 DOI: 10.1117/1.nph.9.2.021904] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 12/22/2021] [Indexed: 06/14/2023]
Abstract
Significance: Whether or not capillary pericytes contribute to blood flow regulation in the brain and retina has long been debated. This was partly caused by failure of detecting the contractile protein α -smooth muscle actin ( α -SMA) in capillary pericytes. Aim: The aim of this review is to summarize recent developments in detecting α -SMA and contractility in capillary pericytes and the relevant literature on the biology of actin filaments. Results: Evidence suggests that for visualization of the small amounts of α -SMA in downstream mid-capillary pericytes, actin depolymerization must be prevented during tissue processing. Actin filaments turnover is mainly based on de/re-polymerization rather than transcription of the monomeric form, hence, small amounts of α -SMA mRNA may evade detection by transcriptomic studies. Similarly, transgenic mice expressing fluorescent reporters under the α -SMA promoter may yield low fluorescence due to limited transcriptional activity in mid-capillary pericytes. Recent studies show that pericytes including mid-capillary ones express several actin isoforms and myosin heavy chain type 11, the partner of α -SMA in mediating contraction. Emerging evidence also suggests that actin polymerization in pericytes may have a role in regulating the tone of downstream capillaries. Conclusions: With guidance of actin biology, innovative labeling and imaging techniques can reveal the molecular machinery of contraction in pericytes.
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Affiliation(s)
- Şefik E. Erdener
- Hacettepe University, Institute of Neurological Sciences and Psychiatry, Ankara, Turkey
| | - Gülce Küreli
- Hacettepe University, Institute of Neurological Sciences and Psychiatry, Ankara, Turkey
| | - Turgay Dalkara
- Hacettepe University, Institute of Neurological Sciences and Psychiatry, Ankara, Turkey
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21
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Singh V, Akash R, Chaudhary G, Singh R, Choudhury S, Shukla A, Prabhu SN, Gangwar N, Garg SK. Sepsis downregulates aortic Notch signaling to produce vascular hyporeactivity in mice. Sci Rep 2022; 12:2941. [PMID: 35190630 PMCID: PMC8861011 DOI: 10.1038/s41598-022-06949-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Accepted: 02/02/2022] [Indexed: 11/25/2022] Open
Abstract
Inhibition of Notch signaling in macrophages is known to reduce inflammation, however, its role in regulating vascular hyporeactivity in sepsis is unknown. Thus we aimed to evaluate the effect of sepsis on vascular Notch signaling. Polymicrobial sepsis was induced by caecal ligation and puncture (CLP) in mice. mRNA expressions of Notch receptors (Notch1,3) and ligands (Jag1, Dll4), and downstream effector genes (Hey1, MLCK, MYPT1) were assessed by RT-qPCR. Protein level of activated Notch (NICD) was assessed by Western blot and immuno-histochemistry. Isometric tension in isolated aortic rings was measured by wire myography.CLP down-regulated aortic expression of Notch3, Jag1 and Dll4 as compared to control mice. Additionally, the protein level of NICD was found to be lesser in aortic tissue sections from CLP mice. Expression of Hey1 and MLCK were attenuated whereas MYPT1 expression was increased in septic mouse aorta. DAPT pretreatment did not improve CLP-induced vascular hyporeactivity to NA, CaCl2 and high K+ (80 mM), rather significantly attenuated the aortic response to these vasoconstrictors in control mice. Treatment with 1400 W reversed attenuated Notch3 (but not Jag1 and MLCK) expression in septic mouse aorta. In conclusion, sepsis significantly attenuated the Notch (especially Notch3) signaling in mouse aorta along with reduction in contractile gene expression and vasoconstriction response. Further, iNOS/NO pathway was involved in sepsis-induced down-regulation of Notch3 receptor. Thus systemic inhibition of Notch signaling during sepsis may have serious impact on sepsis-induced vascular hyporeactivity.
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Affiliation(s)
- Vandana Singh
- Smooth Muscle Pharmacology and Molecular Pharmacology Laboratory, Department of Veterinary Pharmacology and Toxicology, College of Veterinary Science and Animal Husbandry, U.P. Pandit Deen Dayal Upadhyaya Pashu Chikitsa Vigyan Vishwavidyalaya Evam Go-Anusandhan Sansthan (DUVASU), Mathura, 281001, India
| | - Raut Akash
- Smooth Muscle Pharmacology and Molecular Pharmacology Laboratory, Department of Veterinary Pharmacology and Toxicology, College of Veterinary Science and Animal Husbandry, U.P. Pandit Deen Dayal Upadhyaya Pashu Chikitsa Vigyan Vishwavidyalaya Evam Go-Anusandhan Sansthan (DUVASU), Mathura, 281001, India
| | - Gaurav Chaudhary
- Smooth Muscle Pharmacology and Molecular Pharmacology Laboratory, Department of Veterinary Pharmacology and Toxicology, College of Veterinary Science and Animal Husbandry, U.P. Pandit Deen Dayal Upadhyaya Pashu Chikitsa Vigyan Vishwavidyalaya Evam Go-Anusandhan Sansthan (DUVASU), Mathura, 281001, India
| | - Rajneesh Singh
- Smooth Muscle Pharmacology and Molecular Pharmacology Laboratory, Department of Veterinary Pharmacology and Toxicology, College of Veterinary Science and Animal Husbandry, U.P. Pandit Deen Dayal Upadhyaya Pashu Chikitsa Vigyan Vishwavidyalaya Evam Go-Anusandhan Sansthan (DUVASU), Mathura, 281001, India
| | - Soumen Choudhury
- Smooth Muscle Pharmacology and Molecular Pharmacology Laboratory, Department of Veterinary Pharmacology and Toxicology, College of Veterinary Science and Animal Husbandry, U.P. Pandit Deen Dayal Upadhyaya Pashu Chikitsa Vigyan Vishwavidyalaya Evam Go-Anusandhan Sansthan (DUVASU), Mathura, 281001, India.
| | - Amit Shukla
- Smooth Muscle Pharmacology and Molecular Pharmacology Laboratory, Department of Veterinary Pharmacology and Toxicology, College of Veterinary Science and Animal Husbandry, U.P. Pandit Deen Dayal Upadhyaya Pashu Chikitsa Vigyan Vishwavidyalaya Evam Go-Anusandhan Sansthan (DUVASU), Mathura, 281001, India
| | - Shyama N Prabhu
- Department of Veterinary Pathology, College of Veterinary Science and Animal Husbandry, U.P. Pandit Deen Dayal Upadhyaya Pashu Chikitsa Vigyan Vishwavidyalaya Evam Go-Anusandhan Sansthan, Mathura, 281001, India
| | - Neeraj Gangwar
- Department of Veterinary Pathology, College of Veterinary Science and Animal Husbandry, U.P. Pandit Deen Dayal Upadhyaya Pashu Chikitsa Vigyan Vishwavidyalaya Evam Go-Anusandhan Sansthan, Mathura, 281001, India
| | - Satish K Garg
- Smooth Muscle Pharmacology and Molecular Pharmacology Laboratory, Department of Veterinary Pharmacology and Toxicology, College of Veterinary Science and Animal Husbandry, U.P. Pandit Deen Dayal Upadhyaya Pashu Chikitsa Vigyan Vishwavidyalaya Evam Go-Anusandhan Sansthan (DUVASU), Mathura, 281001, India
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22
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Merve D, Irfan A, Gul S, Celik OS, Tugba DKN. Trypsin-induced elevated contractile responses in a rat model of interstitial cystitis/bladder pain syndrome: Involvement of PAR2 and intracellular Ca 2+ release pathways. Life Sci 2022; 293:120359. [PMID: 35092732 DOI: 10.1016/j.lfs.2022.120359] [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: 11/19/2021] [Revised: 01/16/2022] [Accepted: 01/24/2022] [Indexed: 11/25/2022]
Abstract
AIMS Interstitial cystitis/bladder pain syndrome (IC/BPS) is a chronic inflammatory disease with unclear etiology. Different receptors play a role in the pathophysiology including protease activated receptors (PARs). The present study aimed to investigate the subtypes and the effects of PARs on contractility using permeabilized detrusor smooth muscle strips in IC/BPS. MAIN METHODS IC/BPS was induced by cyclophosphamide injection. Histopathological analysis, PCR for detecting PAR proteins, western blotting for indicating PAR2 protein expression levels and myograph recording for measuring contractile force were used. KEY FINDINGS The present study reveals that in rat bladder PAR1 and PAR2 but not PAR4 were found to be expressed. The first evidence was revealed where trypsin-induced contractions in rat permeabilized detrusor were potentiated in CYP-induced cystitis. Moreover, the functional inhibition of trypsin-induced contractions by selective PAR2 antagonist (ENMD-1068) and the supporting immunoblotting results emphasized that the main PAR subtype involved in IC/BPS model in rat bladder is PAR2. Our data emphasize the prominent role of IP3 in cystitis pathology besides ryanodine channels. Trypsin-induced Ca2+sensitization contractions were also higher in cystitis. Both Rho kinase and protein kinase C played a role in this increased Ca2+sensitization situation. SIGNIFICANCE The present paper highlights the intracellular pathways that are involved in trypsin-induced contractions mainly via PAR2 in permeabilized bladder detrusor smooth muscle in a rat model of IC/BPS.
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Affiliation(s)
- Denizalti Merve
- Faculty of Pharmacy, Department of Pharmacology, Hacettepe University, Ankara, Turkey
| | - Anjum Irfan
- Faculty of Pharmacy, Department of Pharmacology, Hacettepe University, Ankara, Turkey
| | - Simsek Gul
- Faculty of Medicine, Department of Biophysics, Ankara University, Ankara, Turkey
| | - Onder Sevgen Celik
- Faculty of Medicine, Department of Pathology, Hacettepe University, Ankara, Turkey
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23
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Chiba Y, Ando Y, Kato Y, Hanazaki M, Sakai H. Down-regulation of miR-140-3p is a cause of the interlukin-13-induced up-regulation of RhoA protein in bronchial smooth muscle cells. Small GTPases 2022; 13:1-6. [PMID: 33427568 PMCID: PMC9707530 DOI: 10.1080/21541248.2021.1872318] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
The current study aimed to determine the role of a microRNA (miRNA), miR-140-3p, in the control of RhoA expression in bronchial smooth muscle cells (BSMCs). In cultured human BSMCs, incubation with interleukin-13 (IL-13) caused an up-regulation of RhoA protein concurrently with a down-regulation of miR-140-3p. Transfection of the cells with a miR-140-3p inhibitor caused an increase in basal RhoA protein level. Although a mimic of miR-140-3p had little effect on the basal RhoA level, its treatment inhibited the IL-13-induced up-regulation of RhoA. These findings suggest that RhoA expression is negatively regulated by miR-140-3p, and that the negative regulation is inhibited by IL-13 to cause an up-regulation of RhoA protein in BSMCs.
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Affiliation(s)
- Yoshihiko Chiba
- Laboratory of Molecular Biology and Physiology, School of Pharmacy, Hoshi University, Tokyo, Japan,CONTACT Yoshihiko Chiba Laboratory of Molecular Biology and Physiology, School of Pharmacy, Hoshi University, 2-4-41 Ebara, Shinagawa-ku, Tokyo142-8501, Japan
| | - Yusuke Ando
- Laboratory of Clinical Pathology, Faculty of Pharmacy, Josai University, Saitama, Japan
| | - Yasuna Kato
- Laboratory of Molecular Biology and Physiology, School of Pharmacy, Hoshi University, Tokyo, Japan
| | - Motohiko Hanazaki
- Laboratory of Molecular Biology and Physiology, School of Pharmacy, Hoshi University, Tokyo, Japan,Department of Anesthesiology and Intensive Care Medicine, School of Medicine, International University of Health and Welfare, Chiba, Japan
| | - Hiroyasu Sakai
- Laboratory of Biomolecular Pharmacology, School of Pharmacy, Hoshi University, Tokyo, Japan
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24
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De Silva TM, Sobey CG. Cerebral Vascular Biology in Health and Disease. Stroke 2022. [DOI: 10.1016/b978-0-323-69424-7.00001-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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25
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Abstract
Rho family GTPases are molecular switches best known for their pivotal role in dynamic regulation of the actin cytoskeleton, but also of cellular morphology, motility, adhesion and proliferation. The prototypic members of this family (RhoA, Rac1 and Cdc42) also contribute to the normal kidney function and play important roles in the structure and function of various kidney cells including tubular epithelial cells, mesangial cells and podocytes. The kidney's vital filtration function depends on the structural integrity of the glomerulus, the proximal portion of the nephron. Within the glomerulus, the architecturally actin-based cytoskeleton podocyte forms the final cellular barrier to filtration. The glomerulus appears as a highly dynamic signalling hub that is capable of integrating intracellular cues from its individual structural components. Dynamic regulation of the podocyte cytoskeleton is required for efficient barrier function of the kidney. As master regulators of actin cytoskeletal dynamics, Rho GTPases are therefore of critical importance for sustained kidney barrier function. Dysregulated activities of the Rho GTPases and of their effectors are implicated in the pathogenesis of both hereditary and idiopathic forms of kidney diseases. Diabetic nephropathy is a progressive kidney disease that is caused by injury to kidney glomeruli. High glucose activates RhoA/Rho-kinase in mesangial cells, leading to excessive extracellular matrix production (glomerulosclerosis). This RhoA/Rho-kinase pathway also seems involved in the post-transplant hypertension frequently observed during treatment with calcineurin inhibitors, whereas Rac1 activation was observed in post-transplant ischaemic acute kidney injury.
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Affiliation(s)
- Clara Steichen
- Inserm UMR-1082 Irtomit, Poitiers, France,Faculté De Médecine Et De Pharmacie, Université De Poitiers, Poitiers, France
| | - Claude Hervé
- Inserm UMR-1082 Irtomit, Poitiers, France,CONTACT Claude HervéInserm UMR-1082 Irtomit, Poitiers, France
| | - Thierry Hauet
- Inserm UMR-1082 Irtomit, Poitiers, France,Faculté De Médecine Et De Pharmacie, Université De Poitiers, Poitiers, France,Department of Medical Biology, Service De Biochimie, CHU De Poitiers, Poitiers, France
| | - Nicolas Bourmeyster
- Faculté De Médecine Et De Pharmacie, Université De Poitiers, Poitiers, France,Department of Medical Biology, Service De Biochimie, CHU De Poitiers, Poitiers, France,Laboratoire STIM CNRS ERL 7003, Université de Poitiers, Poitiers Cédex, France
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26
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Thangavelu L, Che Mat Nor SM, Abd Aziz D, Sulong S, Tin A, Ahmad Tajudin LS. Genetic Markers PLEKHA7, ABCC5, and KALRN Are Not Associated With the Progression of Primary Angle Closure Glaucoma (PACG) in Malays. Cureus 2021; 13:e18823. [PMID: 34804680 PMCID: PMC8592120 DOI: 10.7759/cureus.18823] [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] [Accepted: 10/16/2021] [Indexed: 12/21/2022] Open
Abstract
Introduction PLEKHA7, ABCC5, and KALRN have been identified as susceptible genetic markers related to glaucoma. We aimed to investigate the association between the identified susceptible genetic markers PLEKHA7 rs11024102, ABCC5 rs17217796, and KALRN rs1392912 in the progression of primary angle-closure glaucoma (PACG) in Malay patients. Methods For this study, 163 Malay patients with PACG were recruited from April 2015 to April 2017 at Hospital Universiti Sains Malaysia and Hospital Raja Perempuan Zainab II, Kota Bharu. Venesection was performed. DNA was extracted using a commercial DNA extraction kit. The primer was optimized for rs11024102, rs17217796, and rs1392912 of the PLEKHA7, ABCC5, and KALRN genes, respectively. Polymerase chain reaction (PCR) was performed, and PCR products were purified. A DNA sequencer was used to identify polymorphisms. Progression was based on the agreement between the Advanced Glaucoma Intervention Study scoring system and the Hodapp-Parrish and Anderson staging system. The scoring was conducted on two reliable consecutive Humphrey visual fields (HVFs) during the recruitment period and two baseline HVFs obtained when the diagnosis was made. Based on the scoring, patients were grouped into progressed and non-progressed. A chi-square test was used to analyze the association between the genetic markers and the progression of PACG. Results One hundred and sixty-three Malay patients with PACG (58 men and 105 women) were recruited. Twenty-nine patients (18%) had visual field progression of PACG after a mean (SD) follow-up of 6.0 (1.0) years. The minor allele frequencies for PLEKHA7 rs11024102 (G/A), ABCC5 rs17217796 (C/G), and KALRN rs1392912 (A/G) were 0.44, 0.08, and 0.48, respectively. We found that rs11024102 (p=0.828), rs17217796 (p=0.865), and rs1392912 (p=0.684) were not associated with PACG progression in the Malay patients. Conclusion Although PLEKHA7 and ABCC5 were found to be genetic markers associated with the risk of PACG, they played no roles in PACG progression in the Malay population. Moreover, KALRN was not significantly associated with PACG progression. Other susceptible genetic markers may be responsible for PACG progression.
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Affiliation(s)
- Lathalakshmi Thangavelu
- Department of Ophthalmology & Visual Science, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, Kelantan, MYS
| | - Sarah Murniati Che Mat Nor
- Department of Ophthalmology & Visual Science, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, Kelantan, MYS
| | - Darwish Abd Aziz
- Department of Ophthalmology & Visual Science, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, Kelantan, MYS
| | - Sarina Sulong
- Human Genome Centre, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, Kelantan, MYS
| | - Aung Tin
- Department of Ophthalmology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, SGP
| | - Liza Sharmini Ahmad Tajudin
- Department of Ophthalmology & Visual Science, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, Kelantan, MYS
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Leary KA, Steibel JP, Harman CD, Anderson AL, Komáromy AM. Safety and efficacy of topically administered netarsudil-latanoprost fixed dose combination (FDC; Rocklatan™) in normal and glaucomatous dogs with ADAMTS10-open-angle glaucoma (ADAMTS10-OAG). Vet Ophthalmol 2021; 24:610-619. [PMID: 34085750 PMCID: PMC8633047 DOI: 10.1111/vop.12908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 05/06/2021] [Accepted: 05/15/2021] [Indexed: 10/21/2022]
Abstract
OBJECTIVE The aim of the study was to evaluate safety and efficacy of topically administered 0.02% netarsudil-0.005% latanoprost fixed-dose combination (FDC) (Rocklatan™; Aerie Pharmaceutical) in normal and glaucomatous dogs with ADAMTS10-open-angle glaucoma (ADAMTS10-OAG). ANIMALS STUDIED Five normal and five glaucomatous beagle dogs with ADAMTS10-OAG were the study animals. PROCEDURES In each dog, left (OS) or right eye (OD) was randomly selected for netarsudil-latanoprost FDC treatment. Contralateral eyes served as latanoprost-treated controls. The study was divided into four consecutive study periods: following a 4-day baseline period, two sequential 8-day study periods followed with once daily (q24h) and twice daily (q12h) treatments and ending with a washout period. Efficacy was measured by diurnal intraocular pressure (IOP) and pupil diameter. Safety was assessed by routine ophthalmic examination, gonioscopy, and pachymetry. Differences in least square means of quantitative outcome measures were compared between FDC and latanoprost treatments by using the linear Gaussian model. RESULTS Baseline IOPs were 13.6 ± 0.7 mmHg (mean ± SEM) in normal and 28.3 ± 1.4 mmHg in OAG-affected dogs. There was a significant decrease in mean diurnal IOP following FDC administration in both normal (q24h: -2.1 mmHg; q12h: -4.1 mmHg) and glaucomatous dogs (q24h: -14.2 mmHg; q12h: -17.7 mmHg; p < .0001). There was no significant difference in the treatment effect when comparing FDC to latanoprost. Both FDC and latanoprost administration resulted in similarly significant pupil constriction (p < .0001). The FDC administration was well-tolerated but resulted in conjunctival hyperemia. CONCLUSIONS Once or twice daily administration of netarsudil-latanoprost FDC (Rocklatan™) and latanoprost was equally effective in lowering IOP in normal and OAG-affected dogs. There was no netarsudil-related added treatment effect.
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Affiliation(s)
- Kelly A. Leary
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, Michigan State University, East Lansing, MI, USA
| | - Juan P. Steibel
- Department of Animal Science & Department of Fisheries and Wildlife, Michigan State University, East Lansing, MI, USA
| | - Christine D. Harman
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, Michigan State University, East Lansing, MI, USA
| | - Amanda L. Anderson
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, Michigan State University, East Lansing, MI, USA
| | - András M. Komáromy
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, Michigan State University, East Lansing, MI, USA
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28
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Szafranska K, Kruse LD, Holte CF, McCourt P, Zapotoczny B. The wHole Story About Fenestrations in LSEC. Front Physiol 2021; 12:735573. [PMID: 34588998 PMCID: PMC8473804 DOI: 10.3389/fphys.2021.735573] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Accepted: 08/16/2021] [Indexed: 02/06/2023] Open
Abstract
The porosity of liver sinusoidal endothelial cells (LSEC) ensures bidirectional passive transport of lipoproteins, drugs and solutes between the liver capillaries and the liver parenchyma. This porosity is realized via fenestrations - transcellular pores with diameters in the range of 50-300 nm - typically grouped together in sieve plates. Aging and several liver disorders severely reduce LSEC porosity, decreasing their filtration properties. Over the years, a variety of drugs, stimulants, and toxins have been investigated in the context of altered diameter or frequency of fenestrations. In fact, any change in the porosity, connected with the change in number and/or size of fenestrations is reflected in the overall liver-vascular system crosstalk. Recently, several commonly used medicines have been proposed to have a beneficial effect on LSEC re-fenestration in aging. These findings may be important for the aging populations of the world. In this review we collate the literature on medicines, recreational drugs, hormones and laboratory tools (including toxins) where the effect LSEC morphology was quantitatively analyzed. Moreover, different experimental models of liver pathology are discussed in the context of fenestrations. The second part of this review covers the cellular mechanisms of action to enable physicians and researchers to predict the effect of newly developed drugs on LSEC porosity. To achieve this, we discuss four existing hypotheses of regulation of fenestrations. Finally, we provide a summary of the cellular mechanisms which are demonstrated to tune the porosity of LSEC.
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Affiliation(s)
- Karolina Szafranska
- Vascular Biology Research Group, Department of Medical Biology, University of Tromsø - The Arctic University of Norway, Tromsø, Norway
| | - Larissa D Kruse
- Vascular Biology Research Group, Department of Medical Biology, University of Tromsø - The Arctic University of Norway, Tromsø, Norway
| | - Christopher Florian Holte
- Vascular Biology Research Group, Department of Medical Biology, University of Tromsø - The Arctic University of Norway, Tromsø, Norway
| | - Peter McCourt
- Vascular Biology Research Group, Department of Medical Biology, University of Tromsø - The Arctic University of Norway, Tromsø, Norway
| | - Bartlomiej Zapotoczny
- Vascular Biology Research Group, Department of Medical Biology, University of Tromsø - The Arctic University of Norway, Tromsø, Norway.,Department of Biophysical Microstructures, Institute of Nuclear Physics, Polish Academy of Sciences, Kraków, Poland
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29
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Zolty R. Novel Experimental Therapies for Treatment of Pulmonary Arterial Hypertension. J Exp Pharmacol 2021; 13:817-857. [PMID: 34429666 PMCID: PMC8380049 DOI: 10.2147/jep.s236743] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Accepted: 07/07/2021] [Indexed: 12/18/2022] Open
Abstract
Pulmonary arterial hypertension (PAH) is a progressive and devastating disease characterized by pulmonary artery vasoconstriction and vascular remodeling leading to vascular rarefaction with elevation of pulmonary arterial pressures and pulmonary vascular resistance. Often PAH will cause death from right heart failure. Current PAH-targeted therapies improve functional capacity, pulmonary hemodynamics and reduce hospitalization. Nevertheless, today PAH still remains incurable and is often refractory to medical therapy, underscoring the need for further research. Over the last three decades, PAH has evolved from a disease of unknown pathogenesis devoid of effective therapy to a condition whose cellular, genetic and molecular underpinnings are unfolding. This article provides an update on current knowledge and summarizes the progression in recent advances in pharmacological therapy in PAH.
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Affiliation(s)
- Ronald Zolty
- Pulmonary Hypertension Program, University of Nebraska Medical Center, Lied Transplant Center, Omaha, NE, USA
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30
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Rodriguez M, Chen J, Jain PP, Babicheva A, Xiong M, Li J, Lai N, Zhao T, Hernandez M, Balistrieri A, Parmisano S, Simonson T, Breen E, Valdez-Jasso D, Thistlethwaite PA, Shyy JYJ, Wang J, Garcia JGN, Makino A, Yuan JXJ. Upregulation of Calcium Homeostasis Modulators in Contractile-To-Proliferative Phenotypical Transition of Pulmonary Arterial Smooth Muscle Cells. Front Physiol 2021; 12:714785. [PMID: 34408668 PMCID: PMC8364962 DOI: 10.3389/fphys.2021.714785] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 07/13/2021] [Indexed: 12/14/2022] Open
Abstract
Excessive pulmonary artery (PA) smooth muscle cell (PASMC) proliferation and migration are implicated in the development of pathogenic pulmonary vascular remodeling characterized by concentric arterial wall thickening and arteriole muscularization in patients with pulmonary arterial hypertension (PAH). Pulmonary artery smooth muscle cell contractile-to-proliferative phenotypical transition is a process that promotes pulmonary vascular remodeling. A rise in cytosolic Ca2+ concentration [(Ca2+) cyt ] in PASMCs is a trigger for pulmonary vasoconstriction and a stimulus for pulmonary vascular remodeling. Here, we report that the calcium homeostasis modulator (CALHM), a Ca2+ (and ATP) channel that is allosterically regulated by voltage and extracellular Ca2+, is upregulated during the PASMC contractile-to-proliferative phenotypical transition. Protein expression of CALHM1/2 in primary cultured PASMCs in media containing serum and growth factors (proliferative PASMC) was significantly greater than in freshly isolated PA (contractile PASMC) from the same rat. Upregulated CALHM1/2 in proliferative PASMCs were associated with an increased ratio of pAKT/AKT and pmTOR/mTOR and an increased expression of the cell proliferation marker PCNA, whereas serum starvation and rapamycin significantly downregulated CALHM1/2. Furthermore, CALHM1/2 were upregulated in freshly isolated PA from rats with monocrotaline (MCT)-induced PH and in primary cultured PASMC from patients with PAH in comparison to normal controls. Intraperitoneal injection of CGP 37157 (0.6 mg/kg, q8H), a non-selective blocker of CALHM channels, partially reversed established experimental PH. These data suggest that CALHM upregulation is involved in PASMC contractile-to-proliferative phenotypical transition. Ca2+ influx through upregulated CALHM1/2 may play an important role in the transition of sustained vasoconstriction to excessive vascular remodeling in PAH or precapillary PH. Calcium homeostasis modulator could potentially be a target to develop novel therapies for PAH.
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Affiliation(s)
- Marisela Rodriguez
- Section of Physiology, Division of Pulmonary, Critical Care and Sleep Medicine, La Jolla, CA, United States
- Department of Pediatrics, Tucson, AZ, United States
| | - Jiyuan Chen
- Section of Physiology, Division of Pulmonary, Critical Care and Sleep Medicine, La Jolla, CA, United States
- State Key Laboratory of Respiratory Diseases, First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Pritesh P. Jain
- Section of Physiology, Division of Pulmonary, Critical Care and Sleep Medicine, La Jolla, CA, United States
| | - Aleksandra Babicheva
- Section of Physiology, Division of Pulmonary, Critical Care and Sleep Medicine, La Jolla, CA, United States
| | - Mingmei Xiong
- Section of Physiology, Division of Pulmonary, Critical Care and Sleep Medicine, La Jolla, CA, United States
- State Key Laboratory of Respiratory Diseases, First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Jifeng Li
- Section of Physiology, Division of Pulmonary, Critical Care and Sleep Medicine, La Jolla, CA, United States
- Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Ning Lai
- Section of Physiology, Division of Pulmonary, Critical Care and Sleep Medicine, La Jolla, CA, United States
- State Key Laboratory of Respiratory Diseases, First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Tengteng Zhao
- Section of Physiology, Division of Pulmonary, Critical Care and Sleep Medicine, La Jolla, CA, United States
| | - Moises Hernandez
- Division of Cardiothoracic Surgery, Department of Surgery, La Jolla, CA, United States
| | - Angela Balistrieri
- Section of Physiology, Division of Pulmonary, Critical Care and Sleep Medicine, La Jolla, CA, United States
| | - Sophia Parmisano
- Section of Physiology, Division of Pulmonary, Critical Care and Sleep Medicine, La Jolla, CA, United States
| | - Tatum Simonson
- Section of Physiology, Division of Pulmonary, Critical Care and Sleep Medicine, La Jolla, CA, United States
| | - Ellen Breen
- Section of Physiology, Division of Pulmonary, Critical Care and Sleep Medicine, La Jolla, CA, United States
| | - Daniela Valdez-Jasso
- Department of Bioengineering, University of California, San Diego, La Jolla, CA, United States
| | | | - John Y. -J. Shyy
- Division of Cardiovascular Medicine, Department of Medicine, La Jolla, CA, United States
| | - Jian Wang
- Section of Physiology, Division of Pulmonary, Critical Care and Sleep Medicine, La Jolla, CA, United States
- State Key Laboratory of Respiratory Diseases, First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Joe G. N. Garcia
- Department of Medicine, The University of Arizona, Tucson, AZ, United States
| | - Ayako Makino
- Division of Endocrinology and Metabolism, La Jolla, CA, United States
| | - Jason X. -J. Yuan
- Section of Physiology, Division of Pulmonary, Critical Care and Sleep Medicine, La Jolla, CA, United States
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Barvitenko N, Aslam M, Lawen A, Saldanha C, Skverchinskaya E, Uras G, Manca A, Pantaleo A. Two Motors and One Spring: Hypothetic Roles of Non-Muscle Myosin II and Submembrane Actin-Based Cytoskeleton in Cell Volume Sensing. Int J Mol Sci 2021; 22:7967. [PMID: 34360739 PMCID: PMC8347689 DOI: 10.3390/ijms22157967] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 07/16/2021] [Accepted: 07/23/2021] [Indexed: 12/12/2022] Open
Abstract
Changes in plasma membrane curvature and intracellular ionic strength are two key features of cell volume perturbations. In this hypothesis we present a model of the responsible molecular apparatus which is assembled of two molecular motors [non-muscle myosin II (NMMII) and protrusive actin polymerization], a spring [a complex between the plasma membrane (PM) and the submembrane actin-based cytoskeleton (smACSK) which behaves like a viscoelastic solid] and the associated signaling proteins. We hypothesize that this apparatus senses changes in both the plasma membrane curvature and the ionic strength and in turn activates signaling pathways responsible for regulatory volume increase (RVI) and regulatory volume decrease (RVD). During cell volume changes hydrostatic pressure (HP) changes drive alterations in the cell membrane curvature. HP difference has opposite directions in swelling versus shrinkage, thus allowing distinction between them. By analogy with actomyosin contractility that appears to sense stiffness of the extracellular matrix we propose that NMMII and actin polymerization can actively probe the transmembrane gradient in HP. Furthermore, NMMII and protein-protein interactions in the actin cortex are sensitive to ionic strength. Emerging data on direct binding to and regulating activities of transmembrane mechanosensors by NMMII and actin cortex provide routes for signal transduction from transmembrane mechanosensors to cell volume regulatory mechanisms.
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Affiliation(s)
| | - Muhammad Aslam
- Department of Internal Medicine I, Experimental Cardiology, Justus Liebig University, 35392 Giessen, Germany;
| | - Alfons Lawen
- Department of Biochemistry and Molecular Biology, School of Biomedical Sciences, Monash University, Clayton, VIC 3800, Australia;
| | - Carlota Saldanha
- Institute of Biochemistry, Institute of Molecular Medicine, Faculty of Medicine University of Lisbon, 1649-028 Lisboa, Portugal;
| | | | - Giuseppe Uras
- Department of Clinical and Movement Neurosciences, Institute of Neurology, University College London, London NW3 2PF, UK;
| | - Alessia Manca
- Department of Biomedical Science, University of Sassari, Viale San Pietro 43/B, 07100 Sassari, Italy;
| | - Antonella Pantaleo
- Department of Biomedical Science, University of Sassari, Viale San Pietro 43/B, 07100 Sassari, Italy;
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Schellenberg LM, Regenthal R, Abraham G. The Rho kinase (ROCK) inhibitor Y-27632 reduces the β 2-adrenoceptor density but enhance cAMP formation in primary equine bronchial epithelial cells. Eur J Pharmacol 2021; 907:174323. [PMID: 34246652 DOI: 10.1016/j.ejphar.2021.174323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 06/28/2021] [Accepted: 07/07/2021] [Indexed: 10/20/2022]
Abstract
The present study addresses the effect of the Rho-kinase (ROCK) inhibitor Y-27632 on the β2-adrenoceptor density and β-agonist-stimulated intracellular second messenger cAMP formation in primary equine bronchial epithelial cells (EBEC). Y-27632 significantly decreased the β2-adrenoceptor number (Bmax) without markedly affecting the receptor affinity (dissociation constant, KD) to the radioligand [125I]-iodocyanopindolol (ICYP). In contrast, Y-27632 augmented the β-agonist-stimulated intracellular cAMP production. Herein, Y-27632 markedly increased the maximal cAMP responses (Emax) (isoproterenol > epinephrine > norepinephrine) but did not shift the β-agonist concentration-effect curves to the left. The β2-selective antagonist ICI 118.551 and the β1/β2-antagonsit propranolol but not the β1-selctive antagonist CGP 20712A reversed the isoproterenol-induced cAMP formation equally in Y-27632-treated and control EBEC, suggesting the effect was merely related to the β2-subtype. These results show that Y-27632 differentially regulates the receptor density and function. Thus, these findings provide the first evidence that the functional interaction of the β2-adrenoceptor and Rho-kinase (ROCK) signaling pathways decreases the receptor expression but enhances receptor downstream cAMP formation. This differential regulation of the receptor density and function by Y-27632 should be further reconsidered with regard to the beneficial effect of the drug in asthma therapy.
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Affiliation(s)
- Linda Marie Schellenberg
- University of Leipzig, Faculty of Veterinary Medicine, Institute of Pharmacology, Pharmacy and Toxicology, An den Tierkliniken 15, 04103, Leipzig, Germany
| | - Ralf Regenthal
- Rudolf-Boehm-Institute of Pharmacology and Toxicology, Clinical Pharmacology, Faculty of Medicine, University of Leipzig, Härtelstr. 16 -18, D-04107 Leipzig, Germany.
| | - Getu Abraham
- University of Leipzig, Faculty of Veterinary Medicine, Institute of Pharmacology, Pharmacy and Toxicology, An den Tierkliniken 15, 04103, Leipzig, Germany.
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Saylam B, Efesoy O, Bozdoğan Arpacı R, Tiftik RN, Tek M, Büyükafşar K, Bozlu M, Çayan S. The effect of testosterone replacement therapy on bladder functions, histology, apoptosis, and Rho-kinase expression in bladder outlet obstruction and hypogonadism rat model. Turk J Med Sci 2021; 51:1491-1499. [PMID: 33387987 PMCID: PMC8326749 DOI: 10.3906/sag-2004-15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Accepted: 01/01/2021] [Indexed: 11/03/2022] Open
Abstract
Background/aim The effect of testosterone replacement therapy was investigated on bladder functions, histology, apoptosis as well as Rho-kinase expression in the rat bladder outlet obstruction (BOO) and hypogonadism models. Materials and methods 30 mature male rats divided into 4 groups: sham group (n = 8), BOO group (n = 8), BOO + orchiectomy group (n = 7), BOO + orchiectomy + testosterone (T) treatment group (n = 7). Cystometric findings, apoptosis index, Rho-kinase (ROCK-2) expression, and smooth muscle/collagen ratio were compared. Results BOO did not change ROCK-2 expression level, compared to sham group (P > 0.05). However, when compared to BOO group (P < 0.01), BOO + orchiectomy led ROCK-2 increase. The testosterone treatment failed to reverse the up-regulation of ROCK-2 induced by orchiectomy although it tended to lower ROCK-2 level. Compared to sham group (P = 0.002), changes in maximal bladder capacity and leak point pressure were higher (P = 0.026, P = 0.001), and bladder compliance was lower in BOO group. Also, the apoptosis index was different between the two groups (P = 0.380). Smooth muscle/collagen ratio was higher in BOO + orchiectomy + T group than in BOO + orchiectomy group (P = 0.010). Conclusions The research draws attention to alternating treatment approaches in case of the presence of hypogonadism and BOO.
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Affiliation(s)
- Barış Saylam
- Department of Urology, Mersin City Training and Research Hospital, Mersin, Turkey
| | - Ozan Efesoy
- Department of Urology, Mersin City Training and Research Hospital, Mersin, Turkey
| | | | - Rukiye Nalan Tiftik
- Department of Pharmacology, Faculty of Medicine, Mersin University, Mersin, Turkey
| | - Mesut Tek
- Department of Urology, Faculty of Medicine, Mersin University, Mersin, Turkey
| | - Kansu Büyükafşar
- Department of Pharmacology, Faculty of Medicine, Mersin University, Mersin, Turkey
| | - Murat Bozlu
- Department of Urology, Faculty of Medicine, Mersin University, Mersin, Turkey
| | - Selahittin Çayan
- Department of Urology, Faculty of Medicine, Mersin University, Mersin, Turkey
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Cooperation of augmented calcium sensitization and increased calcium entry contributes to high blood pressure in salt-sensitive Dahl rats. Hypertens Res 2021; 44:1067-1078. [PMID: 33875859 DOI: 10.1038/s41440-021-00659-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 02/11/2021] [Accepted: 03/14/2021] [Indexed: 11/09/2022]
Abstract
Salt hypertensive Dahl rats are characterized by sympathoexcitation and relative NO deficiency. We tested the hypothesis that the increased blood pressure (BP) response to fasudil in salt hypertensive Dahl rats is due to augmented calcium sensitization in the salt-sensitive strain and/or due to their decreased baroreflex efficiency. BP reduction after acute administration of nifedipine (an L-type voltage-dependent calcium channel blocker) or fasudil (a Rho kinase inhibitor) was studied in conscious intact rats and in rats subjected to acute NO synthase inhibition or combined blockade of the renin-angiotensin system (captopril), sympathetic nervous system (pentolinium), and NO synthase (L-NAME). Intact salt-sensitive (SS) Dahl rats fed a low-salt diet had greater BP responses to nifedipine (-31 ± 6 mmHg) or fasudil (-34 ± 7 mmHg) than salt-resistant (SR) Dahl rats (-16 ± 4 and -17 ± 2 mmHg, respectively), and a high-salt intake augmented the BP response only in SS rats. These BP responses were doubled after acute NO synthase inhibition, indicating that endogenous NO attenuates both calcium entry and calcium sensitization. Additional pentolinium administration, which minimized sympathetic compensation for the drug-induced BP reduction, magnified the BP responses to nifedipine or fasudil in all groups except for salt hypertensive SS rats due to their lower baroreflex efficiency. The BP response to the calcium channel blocker nifedipine can distinguish SS and SR rats even after calcium sensitization inhibition by fasudil, which was not seen when fasudil was administered to nifedipine-pretreated rats. Thus, enhanced calcium entry (potentiated by sympathoexcitation) in salt hypertensive Dahl rats is the abnormality that is essential for their BP increase, which was further augmented by increased calcium sensitization in salt-sensitive Dahl rats.
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Chen Y, Wu B, He JF, Chen J, Kang ZW, Liu D, Luo J, Fang K, Leng X, Tian H, Xu J, Jin C, Zhang J, Wang J, Zhang J, Ou Q, Lu L, Gao F, Xu GT. Effectively Intervening Epithelial-Mesenchymal Transition of Retinal Pigment Epithelial Cells With a Combination of ROCK and TGF-β Signaling Inhibitors. Invest Ophthalmol Vis Sci 2021; 62:21. [PMID: 33861322 PMCID: PMC8083104 DOI: 10.1167/iovs.62.4.21] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Purpose Epithelial-mesenchymal transition (EMT) of retinal pigment epithelial (RPE) cells is a key pathological event in proliferative retinal diseases such as proliferative vitreoretinopathy (PVR). This study aimed to explore a new method to reverse EMT in RPE cells to develop an improved therapy for proliferative retinal diseases. Methods In vitro, human embryonic stem cell-derived RPE cells were passaged and cultured at low density for an extended period of time to establish an EMT model. At different stages of EMT after treatment with known molecules or combinations of molecules, the morphology was examined, transepithelial electrical resistance (TER) was measured, and expression of RPE- and EMT-related genes were examined with RT-PCR, Western blotting, and immunofluorescence. In vivo, a rat model of EMT in RPE cells was established via subretinal injection of dispase. Retinal function was examined by electroretinography (ERG), and retinal morphology was examined. Results EMT of RPE cells was effectively induced by prolonged low-density culture. After EMT occurred, only the combination of the Rho-associated coiled-coil containing protein kinase (ROCK) inhibitor Y27632 and the TGF-β receptor inhibitor RepSox (RY treatment) effectively suppressed and reversed the EMT process, even in cells in an intermediate state of EMT. In dispase-treated Sprague-Dawley rats, RY treatment maintained the morphology of RPE cells and the retina and preserved retinal function. Conclusions RY treatment might promote mesenchymal-epithelial transition (MET), the inverse process of EMT, to maintain the epithelial-like morphology and function of RPE cells. This combined RY therapy could be a new strategy for treating proliferative retinal diseases, especially those involving EMT of RPE cells.
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Affiliation(s)
- Yi Chen
- Department of Ophthalmology of Shanghai Tenth People's Hospital, and Tongji Eye Institute, and Department of Pharmacology, Tongji University School of Medicine, Shanghai, China.,Department of Biochemistry and Molecular Biology, Tongji University School of Medicine, Shanghai, China
| | - Binxin Wu
- Department of Ophthalmology of Shanghai Tenth People's Hospital, and Tongji Eye Institute, and Department of Pharmacology, Tongji University School of Medicine, Shanghai, China.,Department of Biochemistry and Molecular Biology, Tongji University School of Medicine, Shanghai, China
| | - Jian Feng He
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and Inflammation, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jingyao Chen
- Department of Ophthalmology of Shanghai Tenth People's Hospital, and Tongji Eye Institute, and Department of Pharmacology, Tongji University School of Medicine, Shanghai, China
| | - Zi Wei Kang
- Department of Ophthalmology of Shanghai Tenth People's Hospital, and Tongji Eye Institute, and Department of Pharmacology, Tongji University School of Medicine, Shanghai, China
| | - Dandan Liu
- Department of Ophthalmology of Shanghai Tenth People's Hospital, and Tongji Eye Institute, and Department of Pharmacology, Tongji University School of Medicine, Shanghai, China
| | - Junjie Luo
- Department of Ophthalmology of Shanghai Tenth People's Hospital, and Tongji Eye Institute, and Department of Pharmacology, Tongji University School of Medicine, Shanghai, China
| | - Kexin Fang
- Department of Ophthalmology of Shanghai Tenth People's Hospital, and Tongji Eye Institute, and Department of Pharmacology, Tongji University School of Medicine, Shanghai, China
| | - Xiaoxu Leng
- Department of Ophthalmology of Shanghai Tenth People's Hospital, and Tongji Eye Institute, and Department of Pharmacology, Tongji University School of Medicine, Shanghai, China
| | - Haibin Tian
- Department of Ophthalmology of Shanghai Tenth People's Hospital, and Tongji Eye Institute, and Department of Pharmacology, Tongji University School of Medicine, Shanghai, China.,Department of Biochemistry and Molecular Biology, Tongji University School of Medicine, Shanghai, China
| | - Jingying Xu
- Department of Ophthalmology of Shanghai Tenth People's Hospital, and Tongji Eye Institute, and Department of Pharmacology, Tongji University School of Medicine, Shanghai, China.,Department of Biochemistry and Molecular Biology, Tongji University School of Medicine, Shanghai, China
| | - Caixia Jin
- Department of Ophthalmology of Shanghai Tenth People's Hospital, and Tongji Eye Institute, and Department of Pharmacology, Tongji University School of Medicine, Shanghai, China.,Department of Biochemistry and Molecular Biology, Tongji University School of Medicine, Shanghai, China
| | - Jieping Zhang
- Department of Ophthalmology of Shanghai Tenth People's Hospital, and Tongji Eye Institute, and Department of Pharmacology, Tongji University School of Medicine, Shanghai, China.,Department of Biochemistry and Molecular Biology, Tongji University School of Medicine, Shanghai, China
| | - Juan Wang
- Department of Ophthalmology of Shanghai Tenth People's Hospital, and Tongji Eye Institute, and Department of Pharmacology, Tongji University School of Medicine, Shanghai, China.,Department of Biochemistry and Molecular Biology, Tongji University School of Medicine, Shanghai, China
| | - Jingfa Zhang
- Department of Ophthalmology of Shanghai Tenth People's Hospital, and Tongji Eye Institute, and Department of Pharmacology, Tongji University School of Medicine, Shanghai, China.,Department of Biochemistry and Molecular Biology, Tongji University School of Medicine, Shanghai, China
| | - Qingjian Ou
- Department of Ophthalmology of Shanghai Tenth People's Hospital, and Tongji Eye Institute, and Department of Pharmacology, Tongji University School of Medicine, Shanghai, China.,Department of Biochemistry and Molecular Biology, Tongji University School of Medicine, Shanghai, China
| | - Lixia Lu
- Department of Ophthalmology of Shanghai Tenth People's Hospital, and Tongji Eye Institute, and Department of Pharmacology, Tongji University School of Medicine, Shanghai, China.,Department of Biochemistry and Molecular Biology, Tongji University School of Medicine, Shanghai, China
| | - Furong Gao
- Department of Ophthalmology of Shanghai Tenth People's Hospital, and Tongji Eye Institute, and Department of Pharmacology, Tongji University School of Medicine, Shanghai, China.,Department of Biochemistry and Molecular Biology, Tongji University School of Medicine, Shanghai, China
| | - Guo-Tong Xu
- Department of Ophthalmology of Shanghai Tenth People's Hospital, and Tongji Eye Institute, and Department of Pharmacology, Tongji University School of Medicine, Shanghai, China.,Department of Biochemistry and Molecular Biology, Tongji University School of Medicine, Shanghai, China
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Tiftik RN, Temiz-Reşitoğlu M, Güden DS, Bayrak G, Ün İ, Yılmaz ŞN, Şahan-Fırat S. Involvement of Rho-kinase/IκB-α/NF-κB activation in IL-1β-induced inflammatory response and oxidative stress in human chondrocytes. Can J Physiol Pharmacol 2021; 99:418-426. [PMID: 33769089 DOI: 10.1139/cjpp-2020-0305] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
It has been clearly indicated that osteoarthritis (OA) is an inflammatory and degenerative disease that could be promoted by Rho-kinase (ROCK); however, little is known about the role of ROCK/inhibitor κB alpha (IκB-α)/nuclear factor-κB (NF-κB) p65 pathway activation in interleukin-1β (IL-1β) induced inflammatory response and oxidative stress in primary human chondrocytes. To test this hypothesis, we focused on determining ROCK-II, IκB-α, p-IκB-α, NF-κB p65, p-NF-κB p65, IL-6, tumor necrosis factor alpha (TNF-α), cyclooxygenase-2 (COX-2), p22phox, and nicotinamide adenine dinucleotide phosphate (NADPH) oxidase subtype 4 (NOX4) protein expression, ROCK-II activity, NADPH oxidase levels, and total antioxidant capacity (TAC) in the presence and absence of ROCK-inhibitor fasudil. IL-1β (2 ng·mL-1, 24 h) increased the expression of ROCK-II, p-IκB-α, NF-κB p65, p-NF-κB p65, IL-6, TNF-α, COX-2, and p22phox proteins, and decreased the expression of IκB-α, and the NOX4 protein level did not alter. ROCK activity and NADPH oxidase levels were increased, whereas the TAC was decreased by IL-1β. Fasudil (10-5-10-7 M) reversed all these changes induced by IL-1β. These results demonstrate that ROCK/IκB-α/NF-κB p65 pathway activation contributes to the IL-1β-induced inflammatory response and oxidative stress, and thus, ROCK inhibition might be a beneficial treatment option for OA patients mainly based on its anti-inflammatory and antioxidant effects.
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Affiliation(s)
- Rukiye Nalan Tiftik
- Department of Medical Pharmacology, Medical Faculty, Mersin University, Mersin, Turkey
| | | | - Demet Sinem Güden
- Department of Pharmacology, Faculty of Pharmacy, Mersin University, Mersin, Turkey
| | - Gülsen Bayrak
- Department of Histology and Embryology, Medical Faculty, Mersin University, Mersin, Turkey
| | - İsmail Ün
- Department of Medical Pharmacology, Medical Faculty, Mersin University, Mersin, Turkey
| | - Şakir Necat Yılmaz
- Department of Histology and Embryology, Medical Faculty, Mersin University, Mersin, Turkey
| | - Seyhan Şahan-Fırat
- Department of Pharmacology, Faculty of Pharmacy, Mersin University, Mersin, Turkey
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Frehner BL, Reichler IM, Kowalewski MP, Gram A, Keller S, Goericke-Pesch S, Balogh O. Implications of the RhoA/Rho associated kinase pathway and leptin in primary uterine inertia in the dog. J Reprod Dev 2021; 67:207-215. [PMID: 33746146 PMCID: PMC8238673 DOI: 10.1262/jrd.2020-141] [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] [Indexed: 12/26/2022] Open
Abstract
The underlying functional and molecular changes in canine primary uterine inertia (PUI) are still not clarified. Leptin (Lep) and obesity negatively affect
uterine contractility in women, partly mediated by the RhoA/Rho associated kinase pathway, affecting myometrial calcium sensitization. We hypothesized that
increased uterine Lep/Lep receptor (LepR) or decreased RhoA/Rho associated kinase expression contributes to PUI in dogs, independent of obesity. Dogs presented
for dystocia were grouped into PUI (n = 11) or obstructive dystocia (OD, still showing strong labor contractions; n = 7). Interplacental full-thickness uterine
biopsies were collected during Cesarean section for relative gene expression (RGE) of RhoA, its effector kinases (ROCK1,
ROCK2), Lep and LepR by qPCR. Protein and/or mRNA expression and localization was evaluated by immunohistochemistry
and in situ hybridization. RGE was compared between groups by one-way ANOVA using body weight as covariate with statistical significance at P
< 0.05. Uterine ROCK1 and ROCK2 gene expression was significantly higher in PUI than OD, while RhoA and
Lep did not differ. LepR RGE was below the detection limit in five PUI and all OD dogs. Litter size had no influence. Lep,
LepR, RhoA, ROCK1, ROCK2 protein and/or mRNA were localized in the myometrium and endometrium. Uterine protein expression appeared similar between groups.
LepR mRNA signals appeared stronger in PUI than OD. In conclusion, lasting, strong labor contractions in OD likely resulted in downregulation
of uterine ROCK1 and ROCK2, contrasting the higher expression in PUI dogs with insufficient contractions. The Lep-LepR system
may affect uterine contractility in non-obese PUI dogs in a paracrine-autocrine manner.
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Affiliation(s)
- Bianca Lourdes Frehner
- Clinic of Reproductive Medicine, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
| | - Iris Margaret Reichler
- Clinic of Reproductive Medicine, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
| | | | - Aykut Gram
- Institute of Veterinary Anatomy, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland.,Department of Histology and Embryology, Faculty of Veterinary Medicine, Erciyes University, Turkey
| | - Stefanie Keller
- Clinic of Reproductive Medicine, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
| | - Sandra Goericke-Pesch
- Section for Veterinary Reproduction and Obstetrics, Department of Veterinary Clinical Sciences, University of Copenhagen, Frederiksberg, Denmark.,Reproductive Unit of the Clinics - Small Animal, University of Veterinary Medicine Hannover, Foundation, Hannover, Germany
| | - Orsolya Balogh
- Clinic of Reproductive Medicine, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland.,Department of Small Animal Clinical Sciences, Virginia-Maryland College of Veterinary Medicine, Blacksburg, VA, USA
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Kunimura K, Miki S, Takashima M, Suzuki JI. S-1-propenylcysteine improves TNF-α-induced vascular endothelial barrier dysfunction by suppressing the GEF-H1/RhoA/Rac pathway. Cell Commun Signal 2021; 19:17. [PMID: 33588881 PMCID: PMC7883441 DOI: 10.1186/s12964-020-00692-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 12/01/2020] [Indexed: 12/23/2022] Open
Abstract
Background Vascular endothelial barrier function is maintained by cell-to-cell junctional proteins and contributes to vascular homeostasis. Various risk factors such as inflammation disrupt barrier function through down-regulation of these proteins and promote vascular diseases such as atherosclerosis. Previous studies have demonstrated that aged garlic extract (AGE) and its sulfur-containing constituents exert the protective effects against several vascular diseases such as atherosclerosis. In this study, we examined whether AGE and its sulfur-containing constituents improve the endothelial barrier dysfunction elicited by a pro-inflammatory cytokine, Tumor-necrosis factor-α (TNF-α), and explored their mode of action on TNF-α signaling pathway. Methods Human umbilical vein endothelial cells (HUVECs) were treated with test substances in the presence of TNF-α for various time periods. The endothelial permeability was measured by using a transwell permeability assay. The localization of cell-to-cell junctional proteins and actin cytoskeletons were visualized by immunostaining. RhoA and Rac activities were assessed by using GTP-binding protein pulldown assay. Gene and protein expression levels of signaling molecules were analyzed by real-time PCR and western blotting, respectively. Results We found that AGE and its major sulfur-containing constituent, S-1-propenylcysteine (S1PC), reduced hyperpermeability elicited by TNF-α in HUVECs. In addition, S1PC inhibited TNF-α-induced production of myosin light chain (MLC) kinase and inactivation of MLC phosphatase through the suppression of the Rac and RhoA signaling pathways, respectively, which resulted in the dephosphorylation of MLC2, a key factor of actin remodeling. Moreover, S1PC inhibited the phosphorylation and activation of guanine nucleotide exchange factor-H1 (GEF-H1), a common upstream key molecule and activator of Rac and RhoA. These effects of S1PC were accompanied by its ability to prevent the disruption of junctional proteins on the cell–cell contact regions and the increase of actin stress fibers induced by TNF-α. Conclusions The present study suggested that AGE and its major constituent, S1PC, improve endothelial barrier disruption through the protection of junctional proteins on plasma membrane.![]() Video abstract
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Affiliation(s)
- Kayo Kunimura
- Central Research Laboratory, Wakunaga Pharmaceutical Co., Ltd., 624 Shimokotachi, Koda-cho, Akitakata-shi, Hiroshima, 739-1195, Japan
| | - Satomi Miki
- Central Research Laboratory, Wakunaga Pharmaceutical Co., Ltd., 624 Shimokotachi, Koda-cho, Akitakata-shi, Hiroshima, 739-1195, Japan
| | - Miyuki Takashima
- Central Research Laboratory, Wakunaga Pharmaceutical Co., Ltd., 624 Shimokotachi, Koda-cho, Akitakata-shi, Hiroshima, 739-1195, Japan
| | - Jun-Ichiro Suzuki
- Central Research Laboratory, Wakunaga Pharmaceutical Co., Ltd., 624 Shimokotachi, Koda-cho, Akitakata-shi, Hiroshima, 739-1195, Japan.
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Cheng C, Seen D, Zheng C, Zeng R, Li E. Role of Small GTPase RhoA in DNA Damage Response. Biomolecules 2021; 11:212. [PMID: 33546351 PMCID: PMC7913530 DOI: 10.3390/biom11020212] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 01/28/2021] [Accepted: 01/31/2021] [Indexed: 02/06/2023] Open
Abstract
Accumulating evidence has suggested a role of the small GTPase Ras homolog gene family member A (RhoA) in DNA damage response (DDR) in addition to its traditional function of regulating cell morphology. In DDR, 2 key components of DNA repair, ataxia telangiectasia-mutated (ATM) and flap structure-specific endonuclease 1 (FEN1), along with intracellular reactive oxygen species (ROS) have been shown to regulate RhoA activation. In addition, Rho-specific guanine exchange factors (GEFs), neuroepithelial transforming gene 1 (Net1) and epithelial cell transforming sequence 2 (Ect2), have specific functions in DDR, and they also participate in Ras-related C3 botulinum toxin substrate 1 (Rac1)/RhoA interaction, a process which is largely unappreciated yet possibly of significance in DDR. Downstream of RhoA, current evidence has highlighted its role in mediating cell cycle arrest, which is an important step in DNA repair. Unraveling the mechanism by which RhoA modulates DDR may provide more insight into DDR itself and may aid in the future development of cancer therapies.
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Affiliation(s)
| | | | | | | | - Enmin Li
- Department of Biochemistry and Molecular Biology, Shantou University Medical College, Shantou 515031, Guangdong, China; (C.C.); (D.S.); (C.Z.); (R.Z.)
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Chiba Y, Ando Y, Fujii S, Miyakawa Y, Suto W, Kamei J, Sakai H, Hanazaki M. Downregulation of miR-140-3p Is a Cause of Upregulation of RhoA Protein in Bronchial Smooth Muscle of Murine Experimental Asthma. Am J Respir Cell Mol Biol 2021; 64:138-140. [PMID: 33385215 DOI: 10.1165/rcmb.2020-0292le] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Affiliation(s)
| | - Yusuke Ando
- Hoshi University School of Pharmacy Tokyo, Japan and
| | - Shigeki Fujii
- Hoshi University School of Pharmacy Tokyo, Japan and
| | - Yui Miyakawa
- Hoshi University School of Pharmacy Tokyo, Japan and
| | - Wataru Suto
- Hoshi University School of Pharmacy Tokyo, Japan and
| | - Junzo Kamei
- Hoshi University School of Pharmacy Tokyo, Japan and
| | | | - Motohiko Hanazaki
- Hoshi University School of Pharmacy Tokyo, Japan and.,International University of Health and Welfare Chiba, Japan
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Acheva A, Kärki T, Schaible N, Krishnan R, Tojkander S. Adipokine Leptin Co-operates With Mechanosensitive Ca 2 +-Channels and Triggers Actomyosin-Mediated Motility of Breast Epithelial Cells. Front Cell Dev Biol 2021; 8:607038. [PMID: 33490070 PMCID: PMC7815691 DOI: 10.3389/fcell.2020.607038] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Accepted: 12/07/2020] [Indexed: 12/24/2022] Open
Abstract
In postmenopausal women, a major risk factor for the development of breast cancer is obesity. In particular, the adipose tissue-derived adipokine leptin has been strongly linked to tumor cell proliferation, migration, and metastasis, but the underlying mechanisms remain unclear. Here we show that treatment of normal mammary epithelial cells with leptin induces EMT-like features characterized by higher cellular migration speeds, loss of structural ordering of 3D-mammo spheres, and enhancement of epithelial traction forces. Mechanistically, leptin triggers the phosphorylation of myosin light chain kinase-2 (MLC-2) through the interdependent activity of leptin receptor and Ca2+ channels. These data provide evidence that leptin-activated leptin receptors, in co-operation with mechanosensitive Ca2+ channels, play a role in the development of breast carcinomas through the regulation of actomyosin dynamics.
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Affiliation(s)
- Anna Acheva
- Section of Pathology, Department of Veterinary Biosciences, University of Helsinki, Helsinki, Finland
| | - Tytti Kärki
- Department of Applied Physics, School of Science, Aalto University, Espoo, Finland
| | - Niccole Schaible
- Beth Deaconess Medical Center, Harvard Medical School, Boston, MA, United States
| | - Ramaswamy Krishnan
- Beth Deaconess Medical Center, Harvard Medical School, Boston, MA, United States
| | - Sari Tojkander
- Section of Pathology, Department of Veterinary Biosciences, University of Helsinki, Helsinki, Finland
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Karnam S, Skiba NP, Rao PV. Biochemical and biomechanical characteristics of dystrophin-deficient mdx 3cv mouse lens. Biochim Biophys Acta Mol Basis Dis 2021; 1867:165998. [PMID: 33127476 PMCID: PMC8323981 DOI: 10.1016/j.bbadis.2020.165998] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 10/17/2020] [Accepted: 10/23/2020] [Indexed: 12/11/2022]
Abstract
The molecular and cellular basis for cataract development in mice lacking dystrophin, a scaffolding protein that links the cytoskeleton to the extracellular matrix, is poorly understood. In this study, we characterized lenses derived from the dystrophin-deficient mdx3cv mouse model. Expression of Dp71, a predominant isoform of dystrophin in the lens, was induced during lens fiber cell differentiation. Dp71 was found to co-distribute with dystroglycan, connexin-50 and 46, aquaporin-0, and NrCAM as a large cluster at the center of long arms of the hexagonal fibers. Although mdx3cv mouse lenses exhibited dramatically reduced levels of Dp71, only older lenses revealed punctate nuclear opacities compared to littermate wild type (WT) lenses. The levels of dystroglycan, syntrophin, and dystrobrevin which comprise the dystrophin-associated protein complex (DAPC), and NrCAM, connexin-50, and aquaporin-0, were significantly lower in the lens membrane fraction of adult mdx3cv mice compared to WT mice. Additionally, decreases were observed in myosin light chain phosphorylation and lens stiffness together with a significant elevation in the levels of utrophin, a functional homolog of dystrophin in mdx3cv mouse lenses compared to WT lenses. The levels of perlecan and laminin (ligands of α-dystroglycan) remained normal in dystrophin-deficient lens fibers. Taken together, although mdx3cv mouse lenses exhibit only minor defects in lens clarity possibly due to a compensatory increase in utrophin, the noted disruptions of DAPC, stability, and organization of membrane integral proteins of fibers, and stiffness of mdx3cv lenses reveal the importance of dystrophin and DAPC in maintaining lens clarity and function.
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Affiliation(s)
- Shruthi Karnam
- Department of Ophthalmology, Duke University School of Medicine, Durham, NC, USA
| | - Nikolai P Skiba
- Department of Ophthalmology, Duke University School of Medicine, Durham, NC, USA
| | - Ponugoti V Rao
- Department of Ophthalmology, Duke University School of Medicine, Durham, NC, USA; Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, NC, USA.
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43
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McCarty MF, Lerner A. Nutraceutical induction and mimicry of heme oxygenase activity as a strategy for controlling excitotoxicity in brain trauma and ischemic stroke: focus on oxidative stress. Expert Rev Neurother 2020; 21:157-168. [PMID: 33287596 DOI: 10.1080/14737175.2021.1861940] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Introduction: Ischemic stroke and traumatic brain injury are leading causes of acute mortality, and in the longer run, major causes of significant mental and physical impairment. Most of the brain neuronal cell death in the minutes and hours following an ischemic stroke or brain trauma is mediated by the process of excitotoxicity, in which sustained elevations of extracellular glutamate, reflecting a failure of ATP-dependent mechanism which sequester glutamate in neurons and astrocytes, drive excessive activation of NMDA receptors. Areas covered: A literature search was undertaken to clarify the molecular mechanisms whereby excessive NMDA activation leads to excitotoxic neuronal death, and to determine what safe nutraceutical agents might have practical potential for rescuing at-risk neurons by intervening in these mechanisms. Expert opinion: Activation of both NADPH oxidase and neuronal nitric oxide synthase in the microenvironment of activated NMDA receptors drives production of superoxide and highly toxic peroxynitrite. This leads to excessive activation of PARP and p38 MAP kinase, mitochondrial dysfunction, and subsequent neuronal death. Heme oxygenase-1 (HO-1) induction offers protection via inhibition of NADPH oxidase and promotion of cGMP generation. Phase 2-inductive nutraceuticals can induce HO-1, and other nutraceuticals can mimic the effects of its products biliverdin and carbon monoxide.
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Affiliation(s)
| | - Aaron Lerner
- Technion Israel Institute of Technology Ruth and Bruce Rappaport Faculty of Medicine- Research, Haifa, Israel (Retired)
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44
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Aalkjær C, Nilsson H, De Mey JGR. Sympathetic and Sensory-Motor Nerves in Peripheral Small Arteries. Physiol Rev 2020; 101:495-544. [PMID: 33270533 DOI: 10.1152/physrev.00007.2020] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Small arteries, which play important roles in controlling blood flow, blood pressure, and capillary pressure, are under nervous influence. Their innervation is predominantly sympathetic and sensory motor in nature, and while some arteries are densely innervated, others are only sparsely so. Innervation of small arteries is a key mechanism in regulating vascular resistance. In the second half of the previous century, the physiology and pharmacology of this innervation were very actively investigated. In the past 10-20 yr, the activity in this field was more limited. With this review we highlight what has been learned during recent years with respect to development of small arteries and their innervation, some aspects of excitation-release coupling, interaction between sympathetic and sensory-motor nerves, cross talk between endothelium and vascular nerves, and some aspects of their role in vascular inflammation and hypertension. We also highlight what remains to be investigated to further increase our understanding of this fundamental aspect of vascular physiology.
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Affiliation(s)
| | - Holger Nilsson
- Department Physiology, Gothenburg University, Gothenburg, Sweden
| | - Jo G R De Mey
- Deptartment Pharmacology and Personalized Medicine, Maastricht University, Maastricht, The Netherlands
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45
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West EG, Sellers DJ, Chess-Williams R, McDermott C. Bladder overactivity induced by psychological stress in female mice is associated with enhanced bladder contractility. Life Sci 2020; 265:118735. [PMID: 33166589 DOI: 10.1016/j.lfs.2020.118735] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Revised: 10/25/2020] [Accepted: 11/05/2020] [Indexed: 12/28/2022]
Abstract
AIMS To investigates the effects of water avoidance stress on voiding behaviour and functional bladder responses in mice. MAIN METHODS Mice in the Stress group were exposed to water avoidance stress (WAS) for 1 h/day for 10 days, Controls were age-matched and housed normally. Voiding behaviour was measured periodically throughout the stress protocol and bladders were isolated 24-h after final stress exposure to measure bladder compliance, spontaneous phasic activity, contractile responses, and release of urothelial mediators. KEY FINDINGS Repeated stress exposure induced a significant increase in plasma corticosterone levels in the WAS group compared to control. An overactive bladder phenotype was observed in WAS mice, causing a significant increase in the number of voiding events observed from as early as day-3, and a 7-fold increase following 10-days' stress. This increase in voiding frequency was associated with a significant decrease in void size, an increase in the number of small voids, but no change in total voided volume. Bladders from stressed mice showed a significant increase in the maximum responses to the muscarinic agonist carbachol (p < 0.01), in addition to enhanced pressure responses to the purinergic agonists ATP (p < 0.05) and αβ-mATP (p < 0.05), and non-receptor mediated contractions to KCl (p < 0.05) compared to controls. Nerve-mediated bladder contractions to electric field stimulation were not significantly affected by stress, nor were spontaneous phasic contractions or release of urothelial ATP and acetylcholine. SIGNIFICANCE Repeated exposure to water avoidance stress produced an overactive bladder phenotype, confirmed by increased voiding frequency, and associated with enhanced bladder contractile responses.
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Affiliation(s)
- Eliza G West
- Centre for Urology Research, Faculty of Health Sciences and Medicine, Bond University, Robina, QLD 4229, Australia
| | - Donna J Sellers
- Centre for Urology Research, Faculty of Health Sciences and Medicine, Bond University, Robina, QLD 4229, Australia
| | - Russ Chess-Williams
- Centre for Urology Research, Faculty of Health Sciences and Medicine, Bond University, Robina, QLD 4229, Australia
| | - Catherine McDermott
- Centre for Urology Research, Faculty of Health Sciences and Medicine, Bond University, Robina, QLD 4229, Australia.
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Imanishi A, Ichise H, Fan C, Nakagawa Y, Kuwahara K, Sumiyama K, Matsuda M, Terai K. Visualization of Spatially-Controlled Vasospasm by Sympathetic Nerve-Mediated ROCK Activation. THE AMERICAN JOURNAL OF PATHOLOGY 2020; 191:194-203. [PMID: 33069718 DOI: 10.1016/j.ajpath.2020.09.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 09/06/2020] [Accepted: 09/23/2020] [Indexed: 01/30/2023]
Abstract
Contraction of vascular smooth muscle is regulated primarily by calcium concentration and secondarily by ROCK activity within the cells. In contrast to the wealth of information regarding regulation of calcium concentration, little is known about the spatiotemporal regulation of ROCK activity in live blood vessels. Here, we report ROCK activation in subcutaneous arterioles in a transgenic mouse line that expresses a genetically encoded ROCK biosensor based on the principle of Fӧrster resonance energy transfer by two-photon excitation in vivo imaging. Rapid vasospasm was induced upon laser ablation of arterioles, concomitant with a transient increase in calcium concentration in arteriolar smooth muscles. Unlike the increase in calcium concentration, vasoconstriction and ROCK activation continued for several minutes after irradiation. Both the ROCK inhibitor, fasudil, and the ganglionic nicotinic acetylcholine receptor blocker, hexamethonium, inhibited laser-induced ROCK activation and reduced the duration of vasospasm at the segments distant from the irradiated point. These observations suggest that vasoconstriction is initially triggered by a rapid surge of cytoplasmic calcium and then maintained by sympathetic nerve-mediated ROCK activation.
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Affiliation(s)
- Ayako Imanishi
- Laboratory of Bioimaging and Cell Signaling, Graduate School of Biostudies, Kyoto University, Kyoto, Japan
| | - Hiroshi Ichise
- Laboratory of Bioimaging and Cell Signaling, Graduate School of Biostudies, Kyoto University, Kyoto, Japan
| | - Chuyun Fan
- Laboratory of Bioimaging and Cell Signaling, Graduate School of Biostudies, Kyoto University, Kyoto, Japan
| | - Yasuaki Nakagawa
- Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Koichiro Kuwahara
- Department of Cardiovascular Medicine, Shinshu University School of Medicine, Nagano, Japan
| | - Kenta Sumiyama
- Laboratory for Mouse Genetic Engineering, RIKEN Center for Biosystems Dynamics Research, Osaka, Japan
| | - Michiyuki Matsuda
- Laboratory of Bioimaging and Cell Signaling, Graduate School of Biostudies, Kyoto University, Kyoto, Japan; Department of Pathology and Biology of Diseases, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Kenta Terai
- Laboratory of Bioimaging and Cell Signaling, Graduate School of Biostudies, Kyoto University, Kyoto, Japan.
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Ahmad T, Shah AJ, Khan T, Roberts R. Mechanism underlying the vasodilation induced by diosmetin in porcine coronary artery. Eur J Pharmacol 2020; 884:173400. [PMID: 32730832 DOI: 10.1016/j.ejphar.2020.173400] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 07/21/2020] [Accepted: 07/22/2020] [Indexed: 11/25/2022]
Abstract
Diosmetin is a flavonoid present naturally in citrus fruit. Plants containing diosmetin have been reported to have anti-hypertensive and vasorelaxant effects. Therefore, experiments were carried out to study the effects of diosmetin in segments of the porcine coronary artery (PCA). PCA rings were mounted for isometric tension recording in isolated tissue baths and pre-contracted with the thromboxane A2 mimetic U46619 or KCl. Cumulative concentration response curves to diosmetin were then carried out in the presence or absence of inhibitors or activators of different signaling pathways. The effect on calcium channels was determined by investigating the effect of a single concentration of diosmetin (30 μM) on calcium-induced contractions or contractions to BAY K8644. Diosmetin caused a concentration-dependent relaxation after pre-contraction with U46619 or KCl, which was unaffected by removal of the endothelium. Tetraethylammonium (TEA), and 4-aminopyridine (4-AP), but not barium chloride, caused significant inhibition of the diosmetin-mediated vasorelaxation, indicating a role for potassium channels. Diosmetin inhibited calcium-induced contractions and contractions to the L-type calcium channel opener BAY K8644. Furthermore, diosmetin inhibited the contractions in response to caffeine, cyclopiazonic acid and ionomycin, indicating a general effect on calcium-induced contractions. Contractions in response to the protein kinase C (PKC) activator Phorbol 12-myristate 13-acetate (PMA) were also inhibited by diosmetin, suggesting that it may inhibit a calcium-activated PKC isoform. In summary, diosmetin produced significant vasodilatory effects. The data indicate a role for potassium channels as well as an effect on calcium-induced contractile pathways, possible through inhibition of PKC.
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Affiliation(s)
- Taseer Ahmad
- Department of Pharmacy, COMSATS University Islamabad, Abbottabad Campus, University Road, Abbottabad, KPK, 22060, Pakistan; Department of Pharmacology, College of Pharmacy, University of Sargodha, University Road, Sargodha, Punjab, 40100, Pakistan; School of Life Sciences, University of Nottingham Medical School, Queen's Medical Centre, Nottingham, NG7 2UH, England, UK
| | - Abdul Jabbar Shah
- Department of Pharmacy, COMSATS University Islamabad, Abbottabad Campus, University Road, Abbottabad, KPK, 22060, Pakistan
| | - Taous Khan
- Department of Pharmacy, COMSATS University Islamabad, Abbottabad Campus, University Road, Abbottabad, KPK, 22060, Pakistan
| | - Richard Roberts
- School of Life Sciences, University of Nottingham Medical School, Queen's Medical Centre, Nottingham, NG7 2UH, England, UK.
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Platenkamp A, Detmar E, Sepulveda L, Ritz A, Rogers SL, Applewhite DA. The Drosophila melanogaster Rab GAP RN-tre cross-talks with the Rho1 signaling pathway to regulate nonmuscle myosin II localization and function. Mol Biol Cell 2020; 31:2379-2397. [PMID: 32816624 PMCID: PMC7851959 DOI: 10.1091/mbc.e20-03-0181] [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] [Indexed: 12/04/2022] Open
Abstract
To identify novel regulators of nonmuscle myosin II (NMII) we performed an image-based RNA interference screen using stable Drosophila melanogaster S2 cells expressing the enhanced green fluorescent protein (EGFP)-tagged regulatory light chain (RLC) of NMII and mCherry-Actin. We identified the Rab-specific GTPase-activating protein (GAP) RN-tre as necessary for the assembly of NMII RLC into contractile actin networks. Depletion of RN-tre led to a punctate NMII phenotype, similar to what is observed following depletion of proteins in the Rho1 pathway. Depletion of RN-tre also led to a decrease in active Rho1 and a decrease in phosphomyosin-positive cells by immunostaining, while expression of constitutively active Rho or Rho-kinase (Rok) rescues the punctate phenotype. Functionally, RN-tre depletion led to an increase in actin retrograde flow rate and cellular contractility in S2 and S2R+ cells, respectively. Regulation of NMII by RN-tre is only partially dependent on its GAP activity as overexpression of constitutively active Rabs inactivated by RN-tre failed to alter NMII RLC localization, while a GAP-dead version of RN-tre partially restored phosphomyosin staining. Collectively, our results suggest that RN-tre plays an important regulatory role in NMII RLC distribution, phosphorylation, and function, likely through Rho1 signaling and putatively serving as a link between the secretion machinery and actomyosin contractility.
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Affiliation(s)
| | - Elizabeth Detmar
- Department of Biology & Integrative Program for Biological and Genome Sciences, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3280
| | - Liz Sepulveda
- Department of Biology, Reed College, Portland, OR 97202
| | - Anna Ritz
- Department of Biology, Reed College, Portland, OR 97202
| | - Stephen L Rogers
- Department of Biology & Integrative Program for Biological and Genome Sciences, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3280
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Nunes KP, Webb RC. New insights into RhoA/Rho-kinase signaling: a key regulator of vascular contraction. Small GTPases 2020; 12:458-469. [PMID: 32970516 DOI: 10.1080/21541248.2020.1822721] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023] Open
Abstract
While Rho-signalling controlling vascular contraction is a canonical mechanism, with the modern approaches used in research, we are advancing our understanding and details into this pathway are often uncovered. RhoA-mediated Rho-kinase is the major regulator of vascular smooth muscle cells and a key player manoeuvring other functions in these cells. The discovery of new interactions, such as oxidative stress and hydrogen sulphide with Rho signalling are emerging addition not only in the physiology of the smooth muscle, but especially in the pathophysiology of vascular diseases. Likewise, the interplay between ageing and Rho-kinase in the vasculature has been recently considered. Importantly, in smooth muscle contraction, this pathway may also be affected by sex hormones, and consequently, sex-differences. This review provides an overview of Rho signalling mediating vascular contraction and focuses on recent topics discussed in the literature affecting this pathway such as ageing, sex differences and oxidative stress.
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Affiliation(s)
- Kenia Pedrosa Nunes
- Laboratory of Vascular Physiology, Department of Biomedical and Chemical Engineering and Sciences, Florida Institute of Technology, Melbourne, FL, USA
| | - R Clinton Webb
- Department of Cell Biology and Anatomy, University of South Carolina, Columbia, SC, USA
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Descemet Stripping Only Supplemented With Topical Ripasudil for Fuchs Endothelial Dystrophy 12-Month Outcomes of the Sydney Eye Hospital Study. Cornea 2020; 40:320-326. [PMID: 32740006 DOI: 10.1097/ico.0000000000002437] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Accepted: 05/23/2020] [Indexed: 12/20/2022]
Abstract
PURPOSE To report early safety and efficacy of Descemet stripping only (DSO) supplemented with ripasudil. METHODS A pre-post clinical trial with a historical control group for time to heal and cell count parameters. The study received ethics approval and was conducted with oversight of a data safety monitoring board. All enrolled patients had a superior endothelial cell count of >1000 cells/mm2 and were symptomatic from the presence of central guttata degrading vision and/or producing glare. DSO was carried out with a peeling technique and not combined with any other intervention. Ripasudil 0.4% was applied topically from day 1 postoperatively at a dose of 6 times/d until corneal clearance. Cases with relapse of edema were permitted to restart on ripasudil at a reduced dose of 2 drops/d for a further 2 weeks. Stopping rules with progression to a corneal graft were established. Baseline ocular and systemic investigations were carried out and repeated at varying intervals to monitor for local and systemic adverse events. RESULTS Twenty-three eyes of 23 patients met the inclusion criteria and underwent DSO. Twenty-two of 23 eyes achieved corneal clearance at a mean time of 4.1 weeks. In all patients achieving clearance, improvement in vision was recorded. Improvement in mean uncorrected visual acuity was 0.20 Logarithm of the minimum angle of resolution (LogMar), and improvement in mean best spectacle corrected visual acuity was 0.156 LogMar. One patient failed to clear and underwent Descemet membrane endothelial keratoplasty at week 12. Twenty-one of 22 patients achieving corneal clearance expressed satisfaction with the procedure. The commonest systemic side effect of topical ripasudil was gastrointestinal upset (24%), and the commonest local side effect was ocular irritation (43%). No patient experienced a serious adverse event in the course of the trial. Thirty-nine percent of patients experienced a relapse of edema on ceasing ripasudil, with clearance again on recommencing. CONCLUSIONS This trial of DSO supplemented with ripasudil included local and systemic safety analysis. We judge that this treatment option is emerging as a reliable intervention for select patients with Fuchs' Endothelial Corneal Dystrophy (FECD) with an acceptable safety profile. The observation of relapse edema is strong evidence of a drug effect. The longevity of these results remains unknown.
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