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Patritti-Cram J, Coover RA, Jankowski MP, Ratner N. Purinergic signaling in peripheral nervous system glial cells. Glia 2021; 69:1837-1851. [PMID: 33507559 PMCID: PMC8192487 DOI: 10.1002/glia.23969] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 01/11/2021] [Accepted: 01/12/2021] [Indexed: 01/02/2023]
Abstract
To facilitate analyses of purinergic signaling in peripheral nerve glia, we review recent literature and catalog purinergic receptor mRNA expression in cultured mouse Schwann cells (SCs). Purinergic signaling can decrease developmental SC proliferation, and promote SC differentiation. The purinergic receptors P2RY2 and P2RX7 are implicated in nerve development and in the ratio of Remak SCs to myelinating SCs in differentiated peripheral nerve. P2RY2, P2RX7, and other receptors are also implicated in peripheral neuropathies and SC tumors. In SC tumors lacking the tumor suppressor NF1, the SC pathway that suppresses SC growth through P2RY2‐driven β‐arrestin‐mediated AKT signaling is aberrant. SC‐released purinergic agonists acting through SC and/or neuronal purinergic receptors activate pain responses. In all these settings, purinergic receptor activation can result in calcium‐independent and calcium‐dependent release of SC ATP and UDP, growth factors, and cytokines that may contribute to disease and nerve repair. Thus, current research suggests that purinergic agonists and/or antagonists might have the potential to modulate peripheral glia function in development and in disease.
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Affiliation(s)
- Jennifer Patritti-Cram
- Division of Experimental Hematology and Cancer Biology, Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA.,Neuroscience Graduate Program, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Robert A Coover
- Division of Experimental Hematology and Cancer Biology, Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA.,Department of Basic Pharmaceutical Sciences, High Point University, High Point, North Carolina, USA
| | - Michael P Jankowski
- Department of Anesthesia, Division of Pain Management, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA.,Center for Understanding Pediatric Pain, Cincinnati Children's Hospital Medical Center and University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Nancy Ratner
- Division of Experimental Hematology and Cancer Biology, Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
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2
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Elie-Caille C, Lascombe I, Péchery A, Bittard H, Fauconnet S. Molecular and nanoscale evaluation of N-cadherin expression in invasive bladder cancer cells under control conditions or GW501516 exposure. Mol Cell Biochem 2020; 471:113-127. [PMID: 32519230 PMCID: PMC7370938 DOI: 10.1007/s11010-020-03771-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Accepted: 05/31/2020] [Indexed: 02/06/2023]
Abstract
N-cadherin is a transmembrane glycoprotein expressed by mesenchymal origin cells and is located at the adherens junctions. It regulates also cell motility and contributes to cell signaling. In previous studies, we identified that its anomalous expression in bladder carcinoma was a tumor progression marker. A pharmacological approach to inhibit N-cadherin expression or to block its function could be relevant to prevent disease progression and metastasis development. The morphological exploration of T24 invasive bladder cancer cells by atomic force microscopy (AFM) revealed a spindle-like shape with fibrous structures. By engaging force spectroscopy with AFM tip functionalized with anti-E or anti-N-cadherin antibodies, results showed that T24 cells expressed only N-cadherin as also demonstrated by Western blotting and confocal microscopy. For the first time, we demonstrated by RTqPCR and Western blotting analyses that the peroxisome proliferator-activated receptor β/δ (PPARβ/δ) agonist GW501516 significantly decreased N-cadherin expression in T24 cells. Moreover, high non-cytotoxic doses of GW501516 inhibited confluent T24 cell wound healing closure. By using AFM, a more sensitive nanoanalytical method, we showed that the treatment modified the cellular morphology and diminished N-cadherin cell surface coverage through the decreasing of these adhesion molecule-mediated interaction forces. We observed a greater decrease of N-cadherin upon GW501516 exposure with AFM than that detected with molecular biology techniques. AFM was a complementary tool to biochemical techniques to perform measurements on living cells at the nanometer resolution level. Taken together, our data suggest that GW501516 could be an interesting therapeutic strategy to avoid bladder cancer cell spreading through N-cadherin decrease.
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Affiliation(s)
- Céline Elie-Caille
- FEMTO-ST Institute, Univ. Bourgogne Franche-Comté, CNRS, ENSMM, UTBM, Besançon, France.
| | - Isabelle Lascombe
- Univ. Bourgogne Franche-Comté, EA3181, LabEx LipSTIC ANR-11-LABX-0021, 25030, Besançon, France
| | - Adeline Péchery
- Univ. Bourgogne Franche-Comté, EA3181, LabEx LipSTIC ANR-11-LABX-0021, 25030, Besançon, France
| | - Hugues Bittard
- Service Urologie et Andrologie, CHU Besançon, 25000, Besançon, France
| | - Sylvie Fauconnet
- Univ. Bourgogne Franche-Comté, EA3181, LabEx LipSTIC ANR-11-LABX-0021, 25030, Besançon, France.
- Service Urologie et Andrologie, CHU Besançon, 25000, Besançon, France.
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3
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Hor CHH, Goh ELK. Rab23 Regulates Radial Migration of Projection Neurons via N-cadherin. Cereb Cortex 2019; 28:1516-1531. [PMID: 29420702 PMCID: PMC6093454 DOI: 10.1093/cercor/bhy018] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Indexed: 01/12/2023] Open
Abstract
Radial migration of cortical projection neurons is a prerequisite for shaping a distinct multilayered cerebral cortex during mammalian corticogenesis. Members of Rab GTPases family were reported to regulate radial migration. Here, in vivo conditional knockout or in utero knockdown (KD) of Rab23 in mice neocortex causes aberrant polarity and halted migration of cortical projection neurons. Further investigation of the underlying mechanism reveals down-regulation of N-cadherin in the Rab23-deficient neurons, which is a cell adhesion protein previously known to modulate radial migration. (Shikanai M, Nakajima K, Kawauchi T. 2011. N-cadherin regulates radial glial fiber-dependent migration of cortical locomoting neurons. Commun Integr Biol. 4:326–330.) Interestingly, pharmacological inhibition of extracellular signal-regulated kinases (ERK1/2) also decreases the expression of N-cadherin, implicating an upstream effect of ERK1/2 on N-cadherin and also suggesting a link between Rab23 and ERK1/2. Further biochemical studies show that silencing of Rab23 impedes activation of ERK1/2 via perturbed platelet-derived growth factor-alpha (PDGFRα) signaling. Restoration of the expression of Rab23 or N-cadherin in Rab23-KD neurons could reverse neuron migration defects, indicating that Rab23 modulates migration through N-cadherin. These studies suggest that cortical neuron migration is mediated by a molecular hierarchy downstream of Rab23 via N-cadherin.
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Affiliation(s)
- Catherine H H Hor
- Neuroscience Academic Clinical Programme, Duke-NUS Medical School, Singapore 169857, Singapore.,Department of Research, National Neuroscience Institute, Singapore 308433, Singapore
| | - Eyleen L K Goh
- Neuroscience Academic Clinical Programme, Duke-NUS Medical School, Singapore 169857, Singapore.,Department of Research, National Neuroscience Institute, Singapore 308433, Singapore.,Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, 8 Medical Drive, Singapore 117597, Singapore.,KK Research Center, KK Women's and Children's Hospital, Singapore 229899, Singapore
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Kurushina OV, Barulin AE. [Lo-back pain and compression-ischemic neuropathies: strategies for diagnosis, therapy and rehabilitation]. Zh Nevrol Psikhiatr Im S S Korsakova 2019; 118:122-127. [PMID: 30499508 DOI: 10.17116/jnevro2018118101122] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The article discusses such a common pathology as pain syndrome in the lower back and limbs. A variety of etiological causes, anatomical features leading to the formation of this persistent algic disorder lead to therapeutic failures in clinical practice. The authors consider in detail the most common types of compression-ischemic neuropathy accompanying back pain, suggest diagnostic algorithms and practical recommendations. Results of foreign, Russian and own research are presented.
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Affiliation(s)
- O V Kurushina
- Volgograd State Medical University, Volgograd, Russia
| | - A E Barulin
- Volgograd State Medical University, Volgograd, Russia
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Povedano M, Martínez Y, Tejado A, Arroyo P, Tebe C, Lorenzo JL, Montero J. Observational pilot study of patients with carpal tunnel syndrome treated with Nucleo CMP Forte™. Pain Manag 2018; 9:123-129. [PMID: 30451573 DOI: 10.2217/pmt-2018-0050] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
AIM Carpal tunnel syndrome (CTS) is a very common entrapment neuropathy characterized by pain and paresthesia in the territory of the median nerve. Although this syndrome has a considerable impact on the patient's quality of life, its medical treatment is far from optimal. MATERIAL & METHODS We performed an observational study to evaluate Nucleo CMP ForteTM in patients with electromyography-confirmed, mild-moderate CTS. Pain was assessed using a visual analog scale, electromyogram and the SF-36. RESULTS Pain decreased significantly after 6 months. Quality of life improved significantly in the pain dimensions. No significant differences were observed in electromyographic findings. No adverse events were reported. CONCLUSIONS Nucleotides could prove useful for the nonsurgical treatment of CTS. Further studies are necessary to confirm this.
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Affiliation(s)
- M Povedano
- Servicio de Neurología y Neurofisiología, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat, Barcelona, Spain
| | - Y Martínez
- Servicio de Neurología y Neurofisiología, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat, Barcelona, Spain
| | - A Tejado
- Servicio de Neurología y Neurofisiología, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat, Barcelona, Spain
| | - P Arroyo
- Servicio de Neurología y Neurofisiología, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat, Barcelona, Spain
| | - C Tebe
- Unitat de Bioestadística (UBiDi), Institut d'Investigació Biomedica de Bellvitge, L'Hospitalet de Llobregat, Barcelona, Spain.,Universitat Rovira i Virgili, Reus, Tarragona, Spain
| | - J L Lorenzo
- Scientific Information & Documentation Department (ScIDD), Ferrer International, Barcelona, Spain
| | - J Montero
- Servicio de Neurología y Neurofisiología, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat, Barcelona, Spain
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Palomo-Guerrero M, Cosgaya JM, Gella A, Casals N, Grijota-Martinez C. Uridine-5'-Triphosphate Partially Blocks Differentiation Signals and Favors a more Repair State in Cultured rat Schwann Cells. Neuroscience 2018; 372:255-265. [PMID: 29337237 DOI: 10.1016/j.neuroscience.2018.01.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 12/21/2017] [Accepted: 01/03/2018] [Indexed: 01/05/2023]
Abstract
Schwann cells (SCs) play a key role in peripheral nerve regeneration. After damage, they respond acquiring a repair phenotype that allows them to proliferate, migrate and redirect axonal growth. Previous studies have shown that Uridine-5'-Triphosphate (UTP) and its purinergic receptors participate in several pathophysiological responses in the nervous system. Our group has previously described how UTP induces the migration of a Schwannoma cell line and promotes wound healing. These data suggest that UTP participates in the signaling involved in the regeneration process. In the present study we evaluated UTP effects in isolated rat SCs and cocultures of SCs and dorsal root ganglia neurons. UTP reduced cAMP-dependent Krox-20 induction in SCs. UTP also reduced the N-cadherin re-expression that occurs when SCs and axons make contact. In myelinating cocultures, a non-significant tendency to a lower expression of P0 and MAG proteins in presence of UTP was observed. We also demonstrated that UTP induced SC migration without affecting cell proliferation. Interestingly, UTP was found to block neuregulin-induced phosphorylation of the ErbB3 receptor, a pathway involved in the regeneration process. These results indicate that UTP could acts as a brake to the differentiation signals, promoting a more migratory state in the repair-SCs.
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Affiliation(s)
- Marta Palomo-Guerrero
- Department of Basic Sciences, Faculty of Medicine and Health Sciences, Universitat Internacional de Catalunya, Sant Cugat del Vallès, Spain.
| | - Jose Miguel Cosgaya
- Department of Endocrine and Nervous System Pathophysiology, Instituto de Investigaciones Biomédicas Alberto Sols, Consejo Superior de Investigaciones Científicas and Universidad Autónoma de Madrid, Madrid, Spain.
| | - Alejandro Gella
- Instituto de Neurociencias, Departamento de Biología Celular, Fisiología e Inmunología, Facultad de Biociencias, Universitat Autònoma de Barcelona, Bellaterra, Spain.
| | - Núria Casals
- Department of Basic Sciences, Faculty of Medicine and Health Sciences, Universitat Internacional de Catalunya, Sant Cugat del Vallès, Spain; Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III, Madrid, Spain.
| | - Carmen Grijota-Martinez
- Department of Basic Sciences, Faculty of Medicine and Health Sciences, Universitat Internacional de Catalunya, Sant Cugat del Vallès, Spain.
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Eun SY, Ko YS, Park SW, Chang KC, Kim HJ. P2Y2 nucleotide receptor-mediated extracellular signal-regulated kinases and protein kinase C activation induces the invasion of highly metastatic breast cancer cells. Oncol Rep 2015; 34:195-202. [PMID: 26063340 DOI: 10.3892/or.2015.3972] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Accepted: 04/26/2015] [Indexed: 11/05/2022] Open
Abstract
Tumor metastasis is considered the main cause of mortality in cancer patients, thus it is important to investigate the differences between high- and low-metastatic cancer cells. Our previous study showed that the highly metastatic breast cancer cell line MDA-MB-231 released higher levels of ATP and exhibited higher P2Y2R activity compared with the low-metastatic breast cancer cell line MCF-7. In addition, P2Y2R activation by ATP released from MDA-MB-231 cells induced hypoxia-inducible factor-1α expression, lysyl oxidase secretion and collagen crosslinking, generating a receptive microenvironment for pre-metastatic niche formation. Thus, in the present study, we investigated which P2Y2R-related signaling pathways are involved in the invasion of breast cancer cells. The highly metastatic breast cancer cells MDA-MB-231 and SK-BR-3 showed higher invasion than MCF-7 and T47D cells at a basal level, which was abolished through P2Y2R knockdown or in the presence of apyrase, an enzyme that hydrolyzes extracellular nucleotides. MDA-MB-231 cells also showed high levels of mesenchymal markers, such as Snail, Vimentin and N-cadherin, but not the epithelial marker E-cadherin and this expression was inhibited through ATP degradation or P2Y2R knockdown. Moreover, SK-BR-3 and MDA-MB231 cells exhibited higher ERK and PKC phosphorylation levels than T47D and MCF-7 cells and upregulated phospho-ERK and -PKC levels in MDA-MB-231 cells were significantly downregulated by apyrase or P2Y2R knockdown. Specific inhibitors of ERK, PKC and PLC markedly reduced the invasion and levels of mesenchymal marker expression in MDA-MB-231 cells. These results suggest that over-activated ERK and PKC pathways are involved in the P2Y2R-mediated invasion of breast cancer cells.
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Affiliation(s)
- So Young Eun
- Department of Pharmacology, School of Medicine, Institute of Health Sciences, Gyeongsang National University, Jinju 660-751, Republic of Korea
| | - Young Shin Ko
- Department of Pharmacology, School of Medicine, Institute of Health Sciences, Gyeongsang National University, Jinju 660-751, Republic of Korea
| | - Sang Won Park
- Department of Pharmacology, School of Medicine, Institute of Health Sciences, Gyeongsang National University, Jinju 660-751, Republic of Korea
| | - Ki Churl Chang
- Department of Pharmacology, School of Medicine, Institute of Health Sciences, Gyeongsang National University, Jinju 660-751, Republic of Korea
| | - Hye Jung Kim
- Department of Pharmacology, School of Medicine, Institute of Health Sciences, Gyeongsang National University, Jinju 660-751, Republic of Korea
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Silva TM, França GR, Ornelas IM, Loiola EC, Ulrich H, Ventura ALM. Involvement of nucleotides in glial growth following scratch injury in avian retinal cell monolayer cultures. Purinergic Signal 2015; 11:183-201. [PMID: 25663277 DOI: 10.1007/s11302-015-9444-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Accepted: 01/21/2015] [Indexed: 10/24/2022] Open
Abstract
When retinal cell cultures were mechanically scratched, cell growth over the empty area was observed. Only dividing and migrating, 2 M6-positive glial cells were detected. Incubation of cultures with apyrase (APY), suramin, or Reactive Blue 2 (RB-2), but not MRS 2179, significantly attenuated the growth of glial cells, suggesting that nucleotide receptors other than P2Y1 are involved in the growth of glial cells. UTPγS but not ADPβS antagonized apyrase-induced growth inhibition in scratched cultures, suggesting the participation of UTP-sensitive receptors. No decrease in proliferating cell nuclear antigen (PCNA(+)) cells was observed at the border of the scratch in apyrase-treated cultures, suggesting that glial proliferation was not affected. In apyrase-treated cultures, glial cytoplasm protrusions were smaller and unstable. Actin filaments were less organized and alfa-tubulin-labeled microtubules were mainly parallel to scratch. In contrast to control cultures, very few vinculin-labeled adhesion sites could be noticed in these cultures. Increased Akt and ERK phosphorylation was observed in UTP-treated cultures, effect that was inhibited by SRC inhibitor 1 and PI3K blocker LY294002. These inhibitors and the FAK inhibitor PF573228 also decreased glial growth over the scratch, suggesting participation of SRC, PI3K, and FAK in UTP-induced growth of glial cells in scratched cultures. RB-2 decreased dissociated glial cell attachment to fibronectin-coated dishes and migration through transwell membranes, suggesting that nucleotides regulated adhesion and migration of glial cells. In conclusion, mechanical scratch of retinal cell cultures induces growth of glial cells over the empty area through a mechanism that is dependent on activation of UTP-sensitive receptors, SRC, PI3K, and FAK.
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Affiliation(s)
- Thayane Martins Silva
- Programa de Neurociências, Departamento de Neurobiologia, Instituto de Biologia, Universidade Federal Fluminense, Outeiro de São João Batista s/n, Niterói, RJ, 24020-141, Brazil
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The Beneficial Effect of Chitooligosaccharides on Cell Behavior and Function of Primary Schwann Cells is Accompanied by Up-Regulation of Adhesion Proteins and Neurotrophins. Neurochem Res 2014; 39:2047-57. [DOI: 10.1007/s11064-014-1387-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2014] [Revised: 06/30/2014] [Accepted: 07/11/2014] [Indexed: 01/12/2023]
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Lamarca A, Gella A, Martiañez T, Segura M, Figueiro-Silva J, Grijota-Martinez C, Trullas R, Casals N. Uridine 5'-triphosphate promotes in vitro Schwannoma cell migration through matrix metalloproteinase-2 activation. PLoS One 2014; 9:e98998. [PMID: 24905332 PMCID: PMC4048211 DOI: 10.1371/journal.pone.0098998] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2014] [Accepted: 05/09/2014] [Indexed: 02/07/2023] Open
Abstract
In response to peripheral nerve injury, Schwann cells adopt a migratory phenotype and modify the extracellular matrix to make it permissive for cell migration and axonal re-growth. Uridine 5′-triphosphate (UTP) and other nucleotides are released during nerve injury and activate purinergic receptors expressed on the Schwann cell surface, but little is known about the involvement of purine signalling in wound healing. We studied the effect of UTP on Schwannoma cell migration and wound closure and the intracellular signaling pathways involved. We found that UTP treatment induced Schwannoma cell migration through activation of P2Y2 receptors and through the increase of extracellular matrix metalloproteinase-2 (MMP-2) activation and expression. Knockdown P2Y2 receptor or MMP-2 expression greatly reduced wound closure and MMP-2 activation induced by UTP. MMP-2 activation evoked by injury or UTP was also mediated by phosphorylation of all 3 major mitogen-activated protein kinases (MAPKs): JNK, ERK1/2, and p38. Inhibition of these MAPK pathways decreased both MMP-2 activation and cell migration. Interestingly, MAPK phosphorylation evoked by UTP exhibited a biphasic pattern, with an early transient phosphorylation 5 min after treatment, and a late and sustained phosphorylation that appeared at 6 h and lasted up to 24 h. Inhibition of MMP-2 activity selectively blocked the late, but not the transient, phase of MAPK activation. These results suggest that MMP-2 activation and late MAPK phosphorylation are part of a positive feedback mechanism to maintain the migratory phenotype for wound healing. In conclusion, our findings show that treatment with UTP stimulates in vitro Schwannoma cell migration and wound repair through a MMP-2-dependent mechanism via P2Y2 receptors and MAPK pathway activation.
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Affiliation(s)
- Aloa Lamarca
- Department of Basic Sciences, Facultat de Medicina, Universitat Internacional de Catalunya, Sant Cugat del Vallès, Spain
| | - Alejandro Gella
- Department of Basic Sciences, Facultat de Medicina, Universitat Internacional de Catalunya, Sant Cugat del Vallès, Spain
- * E-mail:
| | - Tania Martiañez
- Department of Basic Sciences, Facultat de Medicina, Universitat Internacional de Catalunya, Sant Cugat del Vallès, Spain
| | - Mònica Segura
- Department of Basic Sciences, Facultat de Medicina, Universitat Internacional de Catalunya, Sant Cugat del Vallès, Spain
| | - Joana Figueiro-Silva
- Neurobiology Unit, Institut d′Investigacions Biomèdiques de Barcelona, Consejo Superior de Investigaciones Científicas, Institut d′Investigacions Biomèdiques Pi i Sunyer, Barcelona, Spain
| | - Carmen Grijota-Martinez
- Department of Basic Sciences, Facultat de Medicina, Universitat Internacional de Catalunya, Sant Cugat del Vallès, Spain
| | - Ramón Trullas
- Neurobiology Unit, Institut d′Investigacions Biomèdiques de Barcelona, Consejo Superior de Investigaciones Científicas, Institut d′Investigacions Biomèdiques Pi i Sunyer, Barcelona, Spain
| | - Núria Casals
- Department of Basic Sciences, Facultat de Medicina, Universitat Internacional de Catalunya, Sant Cugat del Vallès, Spain
- Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III, Madrid, Spain
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