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Philippe A, Kleinau G, Gruner JJ, Wu S, Postpieszala D, Speck D, Heidecke H, Dowell SJ, Riemekasten G, Hildebrand PW, Kamhieh-Milz J, Catar R, Szczepek M, Dragun D, Scheerer P. Molecular Effects of Auto-Antibodies on Angiotensin II Type 1 Receptor Signaling and Cell Proliferation. Int J Mol Sci 2022; 23:ijms23073984. [PMID: 35409344 PMCID: PMC8999261 DOI: 10.3390/ijms23073984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 03/30/2022] [Accepted: 03/30/2022] [Indexed: 11/16/2022] Open
Abstract
The angiotensin II (Ang II) type 1 receptor (AT1R) is involved in the regulation of blood pressure (through vasoconstriction) and water and ion homeostasis (mediated by interaction with the endogenous agonist). AT1R can also be activated by auto-antibodies (AT1R-Abs), which are associated with manifold diseases, such as obliterative vasculopathy, preeclampsia and systemic sclerosis. Knowledge of the molecular mechanisms related to AT1R-Abs binding and associated signaling cascade (dys-)regulation remains fragmentary. The goal of this study was, therefore, to investigate details of the effects of AT1R-Abs on G-protein signaling and subsequent cell proliferation, as well as the putative contribution of the three extracellular receptor loops (ELs) to Abs-AT1R signaling. AT1R-Abs induced nuclear factor of activated T-cells (NFAT) signaling, which reflects Gq/11 and Gi activation. The impact on cell proliferation was tested in different cell systems, as well as activation-triggered receptor internalization. Blockwise alanine substitutions were designed to potentially investigate the role of ELs in AT1R-Abs-mediated effects. First, we demonstrate that Ang II-mediated internalization of AT1R is impeded by binding of AT1R-Abs. Secondly, exclusive AT1R-Abs-induced Gq/11 activation is most significant for NFAT stimulation and mediates cell proliferation. Interestingly, our studies also reveal that ligand-independent, baseline AT1R activation of Gi signaling has, in turn, a negative effect on cell proliferation. Indeed, inhibition of Gi basal activity potentiates proliferation triggered by AT1R-Abs. Finally, although AT1R containing EL1 and EL3 blockwise alanine mutations were not expressed on the human embryonic kidney293T (HEK293T) cell surface, we at least confirmed that parts of EL2 are involved in interactions between AT1R and Abs. This current study thus provides extended insights into the molecular action of AT1R-Abs and associated mechanisms of interrelated pathogenesis.
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Affiliation(s)
- Aurélie Philippe
- Berlin Institute of Health at Charité—Universitätsmedizin Berlin, BIH Biomedical Innovation Academy, D-10178 Berlin, Germany
- Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Nephrology and Medical Intensive Care, Campus Virchow Klinikum, D-13353 Berlin, Germany; (J.J.G.); (S.W.); (D.P.); (R.C.)
- Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Center for Cardiovascular Research, D-10117 Berlin, Germany
- Correspondence: (A.P.); (P.S.); Tel.: +49-30450559318 (A.P.); +49-30450524178 (P.S.)
| | - Gunnar Kleinau
- Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institute of Medical Physics and Biophysics, Group Protein X-ray Crystallography and Signal Transduction, D-10117 Berlin, Germany; (G.K.); (D.S.); (P.W.H.); (M.S.)
| | - Jason Jannis Gruner
- Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Nephrology and Medical Intensive Care, Campus Virchow Klinikum, D-13353 Berlin, Germany; (J.J.G.); (S.W.); (D.P.); (R.C.)
- Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Center for Cardiovascular Research, D-10117 Berlin, Germany
- Vivantes Humboldt-Klinikum, Department of Urology, D-13509 Berlin, Germany
| | - Sumin Wu
- Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Nephrology and Medical Intensive Care, Campus Virchow Klinikum, D-13353 Berlin, Germany; (J.J.G.); (S.W.); (D.P.); (R.C.)
- Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Center for Cardiovascular Research, D-10117 Berlin, Germany
| | - Daniel Postpieszala
- Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Nephrology and Medical Intensive Care, Campus Virchow Klinikum, D-13353 Berlin, Germany; (J.J.G.); (S.W.); (D.P.); (R.C.)
- Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Center for Cardiovascular Research, D-10117 Berlin, Germany
| | - David Speck
- Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institute of Medical Physics and Biophysics, Group Protein X-ray Crystallography and Signal Transduction, D-10117 Berlin, Germany; (G.K.); (D.S.); (P.W.H.); (M.S.)
| | | | | | - Gabriela Riemekasten
- Priority Area Asthma & Allergy, Research Center Borstel, Airway Research Center North (ARCN), Members of the German Center for Lung Research (DZL), D-23845 Borstel, Germany;
- University of Lübeck, University Clinic Schleswig-Holstein, Department of Rheumatology and Clinical Immunology, Campus Lübeck, D-23538 Lübeck, Germany
| | - Peter W. Hildebrand
- Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institute of Medical Physics and Biophysics, Group Protein X-ray Crystallography and Signal Transduction, D-10117 Berlin, Germany; (G.K.); (D.S.); (P.W.H.); (M.S.)
- Leipzig University, Medical Faculty Leipzig, Institute for Medical Physics and Biophysics, D-04107 Leipzig, Germany
- Berlin Institute of Health at Charité—Universitätsmedizin Berlin, D-10178 Berlin, Germany
| | - Julian Kamhieh-Milz
- Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Transfusion Medicine, D-10117 Berlin, Germany;
| | - Rusan Catar
- Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Nephrology and Medical Intensive Care, Campus Virchow Klinikum, D-13353 Berlin, Germany; (J.J.G.); (S.W.); (D.P.); (R.C.)
- Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Center for Cardiovascular Research, D-10117 Berlin, Germany
| | - Michal Szczepek
- Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institute of Medical Physics and Biophysics, Group Protein X-ray Crystallography and Signal Transduction, D-10117 Berlin, Germany; (G.K.); (D.S.); (P.W.H.); (M.S.)
| | - Duska Dragun
- Berlin Institute of Health at Charité—Universitätsmedizin Berlin, BIH Biomedical Innovation Academy, D-10178 Berlin, Germany
- Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Nephrology and Medical Intensive Care, Campus Virchow Klinikum, D-13353 Berlin, Germany; (J.J.G.); (S.W.); (D.P.); (R.C.)
- Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Center for Cardiovascular Research, D-10117 Berlin, Germany
| | - Patrick Scheerer
- Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institute of Medical Physics and Biophysics, Group Protein X-ray Crystallography and Signal Transduction, D-10117 Berlin, Germany; (G.K.); (D.S.); (P.W.H.); (M.S.)
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, D-13353 Berlin, Germany
- Correspondence: (A.P.); (P.S.); Tel.: +49-30450559318 (A.P.); +49-30450524178 (P.S.)
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Hu Q, Huang L, Zhao C, Shen Y, Zheng XF, Wang Y, Zhou CH, Wu YQ. Ca 2+-PKCα-ERK1/2 signaling pathway is involved in the suppressive effect of propofol on proliferation of neural stem cells from the neonatal rat hippocampus. Brain Res Bull 2019; 149:148-155. [PMID: 31002911 DOI: 10.1016/j.brainresbull.2019.04.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2018] [Revised: 12/31/2018] [Accepted: 04/09/2019] [Indexed: 11/17/2022]
Abstract
Neonatal exposure to propofol induces persistent behavioral abnormalities in adulthood. In addition to triggering the apoptosis of neurons in the developing brain, anesthetics may contribute to the development of cognitive deficits by interfering neurogenesis. Given the importance of neural stem cell (NSC) proliferation in neurogenesis, the effect of propofol on NSC proliferation and the mechanisms underlying this effect were investigated. Hippocampal NSC proliferation from neonatal rats was examined using 5-bromo-2'-deoxyuridine incorporation assays in vitro. The [Ca2+]i was analyzed using flow cytometry. The activations of protein kinase C (PKC)-α and extracellular signal-regulated kinases 1/2 (ERK1/2) were measured by western blot. Our results showed that propofol significantly inhibited NSC proliferation in vitro. [Ca2+]i and activations of PKCα and ERK1/2 in NSCs were markedly suppressed by propofol (5, 10, 20, 40 and 80 μM). Ca2+ channel blocker verapamil, PKCα inhibitor chelerythrine and ERK1/2 kinase inhibitor PD98059 exerted their maximal effects on NSC function at concentrations of 20, 10 and 20 μM, respectively. Propofol (20 μM) could not produce further additional suppression effects when used in combination with verapamil (20 μM), chelerythrine (10 μM) or PD98059 (20 μM). In addition, phorbol-12-myristate-13-acetate (PMA, a activator of PKC) markedly attenuated the suppressive effects of propofol on ERK1/2 phosphorylation and NSC proliferation. The inhibition effects on PKCα activation, ERK1/2 phosphorylation and NSC proliferation induced by propofol were significantly improved by BayK8644 (a calcium channel agonist). These results indicate that propofol can inhibits hippocampal NSC proliferation by suppressing the Ca2+-PKCα-ERK1/2 signaling pathway.
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Affiliation(s)
- Qian Hu
- Department of Anesthesiology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, PR China
| | - Li Huang
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, PR China; Department of Pharmacy, Women & Infants Hospital of Zhengzhou, Zhengzhou, PR China
| | - Chao Zhao
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, PR China
| | - Ying Shen
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, PR China
| | - Xiao-Feng Zheng
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, PR China
| | - Yu Wang
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, PR China
| | - Cheng-Hua Zhou
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, PR China.
| | - Yu-Qing Wu
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, PR China.
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Murillo‐Carretero M, Geribaldi‐Doldán N, Flores‐Giubi E, García‐Bernal F, Navarro‐Quiroz EA, Carrasco M, Macías‐Sánchez AJ, Herrero‐Foncubierta P, Delgado‐Ariza A, Verástegui C, Domínguez‐Riscart J, Daoubi M, Hernández‐Galán R, Castro C. ELAC (3,12-di-O-acetyl-8-O-tigloilingol), a plant-derived lathyrane diterpene, induces subventricular zone neural progenitor cell proliferation through PKCβ activation. Br J Pharmacol 2017; 174:2373-2392. [PMID: 28476069 PMCID: PMC5481651 DOI: 10.1111/bph.13846] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Revised: 04/24/2017] [Accepted: 04/25/2017] [Indexed: 01/29/2023] Open
Abstract
BACKGROUND AND PURPOSE Pharmacological strategies aimed to facilitate neuronal renewal in the adult brain, by promoting endogenous neurogenesis, constitute promising therapeutic options for pathological or traumatic brain lesions. We have previously shown that non-tumour-promoting PKC-activating compounds (12-deoxyphorbols) promote adult neural progenitor cell (NPC) proliferation in vitro and in vivo, enhancing the endogenous neurogenic response of the brain to a traumatic injury. Here, we show for the first time that a diterpene with a lathyrane skeleton can also activate PKC and promote NPC proliferation. EXPERIMENTAL APPROACH We isolated four lathyranes from the latex of Euphorbia plants and tested their effect on postnatal NPC proliferation, using neurosphere cultures. The bioactive lathyrane ELAC (3,12-di-O-acetyl-8-O-tigloilingol) was also injected into the ventricles of adult mice to analyse its effect on adult NPC proliferation in vivo. KEY RESULTS The lathyrane ELAC activated PKC and significantly increased postnatal NPC proliferation in vitro, particularly in synergy with FGF2. In addition ELAC stimulated proliferation of NPC, specifically affecting undifferentiated transit amplifying cells. The proliferative effect of ELAC was reversed by either the classical/novel PKC inhibitor Gö6850 or the classical PKC inhibitor Gö6976, suggesting that NPC proliferation is promoted in response to activation of classical PKCs, particularly PKCß. ELAC slightly increased the proportion of NPC expressing Sox2. The effects of ELAC disappeared upon acetylation of its C7-hydroxyl group. CONCLUSIONS AND IMPLICATIONS We propose lathyranes like ELAC as new drug candidates to modulate adult neurogenesis through PKC activation. Functional and structural comparisons between ELAC and phorboids are included.
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Affiliation(s)
- Maribel Murillo‐Carretero
- Área de Fisiología, Facultad de MedicinaUniversidad de CádizCádizSpain and Instituto de Investigación e Innovación Biomédica de Cádiz (INiBICA)
| | - Noelia Geribaldi‐Doldán
- Área de Fisiología, Facultad de MedicinaUniversidad de CádizCádizSpain and Instituto de Investigación e Innovación Biomédica de Cádiz (INiBICA)
| | - Eugenia Flores‐Giubi
- Departamento de Química Orgánica, Facultad de CienciasUniversidad de Cádiz, Puerto RealCádizSpain and Instituto de Investigación en Biomoléculas (INBIO)
| | - Francisco García‐Bernal
- Área de Fisiología, Facultad de MedicinaUniversidad de CádizCádizSpain and Instituto de Investigación e Innovación Biomédica de Cádiz (INiBICA)
| | - Elkin A Navarro‐Quiroz
- Área de Fisiología, Facultad de MedicinaUniversidad de CádizCádizSpain and Instituto de Investigación e Innovación Biomédica de Cádiz (INiBICA)
- Universidad Simón BolívarBarranquillaColombia
| | - Manuel Carrasco
- Área de Fisiología, Facultad de MedicinaUniversidad de CádizCádizSpain and Instituto de Investigación e Innovación Biomédica de Cádiz (INiBICA)
| | - Antonio J Macías‐Sánchez
- Departamento de Química Orgánica, Facultad de CienciasUniversidad de Cádiz, Puerto RealCádizSpain and Instituto de Investigación en Biomoléculas (INBIO)
| | - Pilar Herrero‐Foncubierta
- Área de Fisiología, Facultad de MedicinaUniversidad de CádizCádizSpain and Instituto de Investigación e Innovación Biomédica de Cádiz (INiBICA)
| | - Antonio Delgado‐Ariza
- Área de Fisiología, Facultad de MedicinaUniversidad de CádizCádizSpain and Instituto de Investigación e Innovación Biomédica de Cádiz (INiBICA)
| | - Cristina Verástegui
- Departamento de Anatomía y Embriología HumanaUniversidad de CádizCádizSpain and Instituto de Investigación en Innovación Biomédica de Cádiz (INiBICA)
| | - Jesús Domínguez‐Riscart
- Área de Fisiología, Facultad de MedicinaUniversidad de CádizCádizSpain and Instituto de Investigación e Innovación Biomédica de Cádiz (INiBICA)
| | - Mourad Daoubi
- Departamento de Química Orgánica, Facultad de CienciasUniversidad de Cádiz, Puerto RealCádizSpain and Instituto de Investigación en Biomoléculas (INBIO)
| | - Rosario Hernández‐Galán
- Departamento de Química Orgánica, Facultad de CienciasUniversidad de Cádiz, Puerto RealCádizSpain and Instituto de Investigación en Biomoléculas (INBIO)
| | - Carmen Castro
- Área de Fisiología, Facultad de MedicinaUniversidad de CádizCádizSpain and Instituto de Investigación e Innovación Biomédica de Cádiz (INiBICA)
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Lee SJ, Jung YH, Oh SY, Yun SP, Han HJ. Melatonin enhances the human mesenchymal stem cells motility via melatonin receptor 2 coupling with Gαq in skin wound healing. J Pineal Res 2014; 57:393-407. [PMID: 25250716 DOI: 10.1111/jpi.12179] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Accepted: 09/19/2014] [Indexed: 12/12/2022]
Abstract
Melatonin, a circadian rhythm-promoting molecule, has a variety of biological functions, but the functional role of melatonin in the motility of mesenchymal stem cells (MSCs) has yet to be studied. In a mouse skin excisional wound model, we found that transplantation of umbilical cord blood (UCB)-MSCs pretreated with melatonin enhanced wound closure, granulation, and re-epithelialization at mouse skin wound sites, where relatively more UCB-MSCs which were engrafted onto the wound site were detected. Thus, we identified the signaling pathway of melatonin, which affects the motility of UCB-MSCs. Melatonin (1 μm) significantly increased the motility of UCB-MSCs, which had been inhibited by the knockdown of melatonin receptor 2 (MT2). We found that Gαq coupled with MT2 and that the binding of Gαq to MT2 uniquely stimulated an atypical PKC isoform, PKCζ. Melatonin induced the phosphorylation of FAK and paxillin, which were concurrently downregulated by blocking of the PKC activity. Melatonin increased the levels of active Cdc42 and Arp2/3, and it has the ability to stimulate cytoskeletal reorganization-related proteins such as profilin-1, cofilin-1, and F-actin in UCB-MSCs. Finally, a lack of MT2 expression in UCB-MSCs during a mouse skin transplantation experiment resulted in impaired wound healing and less engraftment of stem cells at the wound site. These results demonstrate that melatonin signaling via MT2 triggers FAK/paxillin phosphorylation to stimulate reorganization of the actin cytoskeleton, which is responsible for Cdc42/Arp2/3 activation to promote UCB-MSCs motility.
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Affiliation(s)
- Sei-Jung Lee
- Department of Veterinary Physiology, College of Veterinary Medicine, Research Institute for Veterinary Science, Seoul National University, Seoul, Korea; BK21 PLUS Creative Veterinary Research Center, Seoul National University, Seoul, Korea
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Xia M, Zhu Y. Fibronectin fragment activation of ERK increasing integrin α₅ and β₁ subunit expression to degenerate nucleus pulposus cells. J Orthop Res 2011; 29:556-61. [PMID: 21337395 DOI: 10.1002/jor.21273] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2010] [Accepted: 09/02/2010] [Indexed: 02/04/2023]
Abstract
Fibronectin fragments (Fn-f), which are the breakdown products of fibronectin, accumulate in the disc during degeneration and are proved to induce the degeneration of intervertebral disc. The goal of this investigation was to determine the functional role of integrin α₅ β₁, extracellular signal-regulated kinase (ERK), and protein kinase C (PKC) in the process of Fn-f degeneration nucleus pulposus (NP) cells. We found that Fn-f (100 nM, 30 kDa) exposure led to degeneration of NP cells, up-regulation of integrin α₅ β₁ expression and phosphorylation of the ERK(½) . After the expression of integrin α₅ β₁ was silenced in NP cells, the phosphorylation of ERK(½) and the expression of MMP9, MMP13, and collagen II had no difference with control under the treatment of Fn-f. Finally, when the inhibitor of ERK(½) and the inhibitor of PKC were added into the medium of NP cells; we found these two inhibitors could eliminate the effect of Fn-f on NP cells. It is concluded that Fn-f had the potential to enhance the NP cell degeneration in a vicious circle. And the integrin α₅ β₁ subunit, ERK, and PKC were all included in this loop.
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Affiliation(s)
- Maosheng Xia
- Department of Orthopaedics, The First Hospital of China Medical University, Heping District, Shenyang, PR China
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Okae H, Iwakura Y. Neural tube defects and impaired neural progenitor cell proliferation in Gbeta1-deficient mice. Dev Dyn 2010; 239:1089-101. [PMID: 20186915 DOI: 10.1002/dvdy.22256] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Heterotrimeric G proteins are well known for their roles in signal transduction downstream of G protein-coupled receptors (GPCRs), and both Galpha subunits and tightly associated Gbetagamma subunits regulate downstream effector molecules. Compared to Galpha subunits, the physiological roles of individual Gbeta and Ggamma subunits are poorly understood. In this study, we generated mice deficient in the Gbeta1 gene and found that Gbeta1 is required for neural tube closure, neural progenitor cell proliferation, and neonatal development. About 40% Gbeta1(-/-) embryos developed neural tube defects (NTDs) and abnormal actin organization was observed in the basal side of neuroepithelium. In addition, Gbeta1(-/-) embryos without NTDs showed microencephaly and died within 2 days after birth. GPCR agonist-induced ERK phosphorylation, cell proliferation, and cell spreading, which were all found to be regulated by Galphai and Gbetagamma signaling, were abnormal in Gbeta1(-/-) neural progenitor cells. These data indicate that Gbeta1 is required for normal embryonic neurogenesis.
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Affiliation(s)
- Hiroaki Okae
- Center for Experimental Medicine and Systems Biology, Institute of Medical Science, University of Tokyo, Tokyo 108-8639, Japan
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Castañeda MM, Cubilla MA, López-Vicchi MM, Suburo AM. Endothelinergic cells in the subependymal region of mice. Brain Res 2010; 1321:20-30. [DOI: 10.1016/j.brainres.2010.01.056] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2009] [Revised: 01/14/2010] [Accepted: 01/20/2010] [Indexed: 10/19/2022]
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Vomaske J, Melnychuk RM, Smith PP, Powell J, Hall L, DeFilippis V, Früh K, Smit M, Schlaepfer DD, Nelson JA, Streblow DN. Differential ligand binding to a human cytomegalovirus chemokine receptor determines cell type-specific motility. PLoS Pathog 2009; 5:e1000304. [PMID: 19229316 PMCID: PMC2637432 DOI: 10.1371/journal.ppat.1000304] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2008] [Accepted: 01/20/2009] [Indexed: 01/19/2023] Open
Abstract
While most chemokine receptors fail to cross the chemokine class boundary with respect to the ligands that they bind, the human cytomegalovirus (HCMV)-encoded chemokine receptor US28 binds multiple CC-chemokines and the CX(3)C-chemokine Fractalkine. US28 binding to CC-chemokines is both necessary and sufficient to induce vascular smooth muscle cell (SMC) migration in response to HCMV infection. However, the function of Fractalkine binding to US28 is unknown. In this report, we demonstrate that Fractalkine binding to US28 not only induces migration of macrophages but also acts to inhibit RANTES-mediated SMC migration. Similarly, RANTES inhibits Fractalkine-mediated US28 migration in macrophages. While US28 binding of both RANTES and Fractalkine activate FAK and ERK-1/2, RANTES signals through Galpha12 and Fractalkine through Galphaq. These findings represent the first example of differential chemotactic signaling via a multiple chemokine family binding receptor that results in migration of two different cell types. Additionally, the demonstration that US28-mediated chemotaxis is both ligand-specific and cell type-specific has important implications in the role of US28 in HCMV pathogenesis.
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Affiliation(s)
- Jennifer Vomaske
- Department of Molecular Microbiology and Immunology and The Vaccine and Gene Therapy Institute, Oregon Health & Science University, Portland, Oregon, United States of America
| | - Ryan M. Melnychuk
- Department of Molecular Microbiology and Immunology and The Vaccine and Gene Therapy Institute, Oregon Health & Science University, Portland, Oregon, United States of America
| | - Patricia P. Smith
- Department of Molecular Microbiology and Immunology and The Vaccine and Gene Therapy Institute, Oregon Health & Science University, Portland, Oregon, United States of America
| | - Joshua Powell
- Department of Molecular Microbiology and Immunology and The Vaccine and Gene Therapy Institute, Oregon Health & Science University, Portland, Oregon, United States of America
| | - Laurel Hall
- Department of Molecular Microbiology and Immunology and The Vaccine and Gene Therapy Institute, Oregon Health & Science University, Portland, Oregon, United States of America
| | - Victor DeFilippis
- Department of Molecular Microbiology and Immunology and The Vaccine and Gene Therapy Institute, Oregon Health & Science University, Portland, Oregon, United States of America
| | - Klaus Früh
- Department of Molecular Microbiology and Immunology and The Vaccine and Gene Therapy Institute, Oregon Health & Science University, Portland, Oregon, United States of America
| | - Martine Smit
- Leiden/Amsterdam Center for Drug Research, Division of Medicinal Chemistry, Faculty of Chemistry, Amsterdam, The Netherlands
| | - David D. Schlaepfer
- Department of Immunology, The Scripps Research Institute, La Jolla, California, United States of America
| | - Jay A. Nelson
- Department of Molecular Microbiology and Immunology and The Vaccine and Gene Therapy Institute, Oregon Health & Science University, Portland, Oregon, United States of America
| | - Daniel N. Streblow
- Department of Molecular Microbiology and Immunology and The Vaccine and Gene Therapy Institute, Oregon Health & Science University, Portland, Oregon, United States of America
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