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Sotelo-Hitschfeld P, Bernal L, Nazeri M, Renthal W, Brauchi S, Roza C, Zimmermann K. Comparative Gene Signature of Nociceptors Innervating Mouse Molar Teeth, Cranial Meninges, and Cornea. Anesth Analg 2024; 139:226-234. [PMID: 38236765 DOI: 10.1213/ane.0000000000006816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/19/2024]
Abstract
BACKGROUND The trigeminal ganglion (TG) collects afferent sensory information from various tissues. Recent large-scale RNA sequencing of neurons of the TG and dorsal root ganglion has revealed a variety of functionally distinct neuronal subpopulations, but organ-specific information is lacking. METHODS To link transcriptomic and tissue-specific information, we labeled small-diameter neurons of 3 specific subpopulations of the TG by local application of lipophilic carbocyanine dyes to their innervation site in the dental pulp, cornea, and meninges (dura mater). We then collected mRNA-sequencing data from fluorescent neurons. Differentially expressed genes (DEGs) were analyzed and subjected to downstream gene set enrichment analysis (GSEA), and ion channel profiling was performed. RESULTS A total of 10,903 genes were mapped to the mouse genome (>500 reads). DEG analysis revealed 18 and 81 genes with differential expression (log 2 fold change > 2, Padj < .05) in primary afferent neurons innervating the dental pulp (dental primary afferent neurons [DPAN]) compared to those innervating the meninges (meningeal primary afferent neurons [MPAN]) and the cornea (corneal primary afferent neurons [CPAN]). We found 250 and 292 genes differentially expressed in MPAN as compared to DPAN and to CPAN, and 21 and 12 in CPAN as compared to DPAN and MPAN. Scn2b had the highest log 2 fold change when comparing DPAN versus MPAN and Mmp12 was the most prominent DEG when comparing DPAN versus CPAN and, CPAN versus MPAN. GSEA revealed genes of the immune and mitochondrial oxidative phosphorylation system for the DPAN versus MPAN comparison, cilium- and ribosome-related genes for the CPAN versus DPAN comparison, and respirasome, immune cell- and ribosome-related gene sets for the CPAN versus MPAN comparison. DEG analysis for ion channels revealed no significant differences between the neurons set except for the sodium voltage-gated channel beta subunit 2, Scn2b . However, in each tissue a few ion channels turned up with robust number of reads. In DPAN, these were Cacna1b , Trpv2 , Cnga4 , Hcn1 , and Hcn3 , in CPAN Trpa1 , Trpv1 , Cacna1a , and Kcnk13 and in MPAN Trpv2 and Scn11a . CONCLUSIONS Our study uncovers previously unknown differences in gene expression between sensory neuron subpopulations from the dental pulp, cornea, and dura mater and provides the basis for functional studies, including the investigation of ion channel function and their suitability as targets for tissue-specific analgesia.
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Affiliation(s)
- Pamela Sotelo-Hitschfeld
- From the Department of Anesthesiology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
- Institute of Physiology and Millennium Nucleus of Ion Channel-Associated Diseases, Universidad Austral de Chile, Valdivia, Chile
| | - Laura Bernal
- From the Department of Anesthesiology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
- Departamento de Biología de Sistemas, Facultad de Medicina, Universidad de Alcalá, Madrid, Spain
| | - Masoud Nazeri
- From the Department of Anesthesiology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - William Renthal
- Department of Neurology, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts
| | - Sebastian Brauchi
- Institute of Physiology and Millennium Nucleus of Ion Channel-Associated Diseases, Universidad Austral de Chile, Valdivia, Chile
| | - Carolina Roza
- Departamento de Biología de Sistemas, Facultad de Medicina, Universidad de Alcalá, Madrid, Spain
| | - Katharina Zimmermann
- From the Department of Anesthesiology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
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2
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Saloman JL, Li Y, Stello K, Li W, Li S, Phillips AE, Hall K, Fogel EL, Vege SS, Li L, Andersen DK, Fisher WE, Forsmark CE, Hart PA, Pandol SJ, Park WG, Topazian MD, Van Den Eeden SK, Serrano J, Conwell DL, Yadav D. Serum Biomarkers of Nociceptive and Neuropathic Pain in Chronic Pancreatitis. THE JOURNAL OF PAIN 2023; 24:2199-2210. [PMID: 37451493 PMCID: PMC10787046 DOI: 10.1016/j.jpain.2023.07.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 07/03/2023] [Accepted: 07/07/2023] [Indexed: 07/18/2023]
Abstract
Debilitating abdominal pain is a common symptom affecting most patients with chronic pancreatitis (CP). There are multiple underlying mechanisms that contribute to CP-related pain, which makes successful treatment difficult. The identification of biomarkers for subtypes of pain could provide viable targets for nonopioid interventions and the development of mechanistic approaches to pain management in CP. Nineteen inflammation- and nociception-associated proteins were measured in serum collected from 358 subjects with definite CP enrolled in PROspective Evaluation of Chronic Pancreatitis for EpidEmiologic and Translational StuDies, a prospective observational study of pancreatitis in US adult subjects. First, serum levels of putative biomarkers were compared between CP subjects with and without pain. Only platelet-derived growth factor B (PDGF-B) stood out, with levels significantly higher in the CP pain group as compared to subjects with no pain. Subjects with pain were then stratified into 4 pain subtypes (Neuropathic, Nociceptive, Mixed, and Unclassified). A comparison of putative biomarker concentration among 5 groups (no pain and 4 pain subtypes) identified unique proteins that were correlated with pain subtypes. Serum transforming growth factor beta 1 (TGFβ1) level was significantly higher in the Nociceptive pain group compared to the No pain group, suggesting that TGFβ1 may be a biomarker for nociceptive pain. The Neuropathic pain only group was too small to detect statistical differences. However, glycoprotein 130 (GP130), a coreceptor for interleukin 6, was significantly higher in the Mixed pain group compared to the groups lacking a neuropathic pain component. These data suggest that GP130 may be a biomarker for neuropathic pain in CP. PERSPECTIVE: Serum TGFβ1 and GP130 may be biomarkers for nociceptive and neuropathic CP pain, respectively. Preclinical data suggest inhibiting TGFβ1 or GP130 reduces CP pain in rodent models, indicating that additional translational and clinical studies may be warranted to develop a precision medicine approach to the management of pain in CP.
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Affiliation(s)
- Jami L. Saloman
- Division of Gastroenterology, Hepatology and Nutrition, Department of Medicine, School of Medicine, University of Pittsburgh, PA, USA
- Pittsburgh Center for Pain Research, School of Medicine, University of Pittsburgh, PA, USA
- Department of Neurobiology, School of Medicine, University of Pittsburgh, PA, USA
| | - Yan Li
- Department of Biostatistics, M.D. Anderson Cancer Center, Houston, TX, USA
| | - Kimberly Stello
- Division of Gastroenterology, Hepatology and Nutrition, Department of Medicine, School of Medicine, University of Pittsburgh, PA, USA
| | - Wenhao Li
- Department of Biostatistics, M.D. Anderson Cancer Center, Houston, TX, USA
| | - Shuang Li
- Department of Biostatistics, M.D. Anderson Cancer Center, Houston, TX, USA
| | - Anna Evans Phillips
- Division of Gastroenterology, Hepatology and Nutrition, Department of Medicine, School of Medicine, University of Pittsburgh, PA, USA
| | - Kristen Hall
- Division of Gastroenterology, Hepatology and Nutrition, Department of Medicine, School of Medicine, University of Pittsburgh, PA, USA
| | - Evan L. Fogel
- Digestive and Liver Disorders, Department of Medicine, Indiana University School of Medicine, Indianapolis, IN
| | | | - Liang Li
- Department of Biostatistics, M.D. Anderson Cancer Center, Houston, TX, USA
| | - Dana K. Andersen
- Division of Digestive Diseases and Nutrition, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD
| | - William E. Fisher
- Division of General Surgery, Baylor College of Medicine, Houston, TX
| | - Christopher E. Forsmark
- Division of Gastroenterology, Hepatology, and Nutrition. University of Florida, Gainesville, FL
| | - Phil A. Hart
- Division of Gastroenterology, Hepatology, and Nutrition, The Ohio State University Wexner Medical Center, Columbus, Ohio, USA
| | - Stephen J. Pandol
- Division of Digestive and Liver Diseases, Cedars-Sinai Medical Center, Los Angeles, CA
| | - Walter G. Park
- Division of Gastroenterology and Hepatology, Department of Medicine, Stanford University School of Medicine, Stanford, CA
| | - Mark D. Topazian
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN
| | | | - Jose Serrano
- Division of Digestive Diseases and Nutrition, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD
| | - Darwin L. Conwell
- Department of Internal Medicine, College of Medicine, University of Kentucky, Lexington, KY, USA
| | - Dhiraj Yadav
- Division of Gastroenterology, Hepatology and Nutrition, Department of Medicine, School of Medicine, University of Pittsburgh, PA, USA
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3
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Proinflammatory cytokines and their receptors as druggable targets to alleviate pathological pain. Pain 2022; 163:S79-S98. [DOI: 10.1097/j.pain.0000000000002737] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 07/14/2022] [Indexed: 02/07/2023]
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4
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Kokotović T, Lenartowicz EM, Langeslag M, Ciotu CI, Fell CW, Scaramuzza A, Fischer MJM, Kress M, Penninger JM, Nagy V. Transcription factor mesenchyme homeobox protein 2 (MEOX2) modulates nociceptor function. FEBS J 2022; 289:3457-3476. [PMID: 35029322 PMCID: PMC9306780 DOI: 10.1111/febs.16347] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 12/30/2021] [Accepted: 01/10/2022] [Indexed: 12/18/2022]
Abstract
Mesenchyme homeobox protein 2 (MEOX2) is a transcription factor involved in mesoderm differentiation, including development of bones, muscles, vasculature and dermatomes. We have previously identified dysregulation of MEOX2 in fibroblasts from Congenital Insensitivity to Pain patients, and confirmed that btn, the Drosophila homologue of MEOX2, plays a role in nocifensive responses to noxious heat stimuli. To determine the importance of MEOX2 in the mammalian peripheral nervous system, we used a Meox2 heterozygous (Meox2+/−) mouse model to characterise its function in the sensory nervous system, and more specifically, in nociception. MEOX2 is expressed in the mouse dorsal root ganglia (DRG) and spinal cord, and localises in the nuclei of a subset of sensory neurons. Functional studies of the mouse model, including behavioural, cellular and electrophysiological analyses, showed altered nociception encompassing impaired action potential initiation upon depolarisation. Mechanistically, we noted decreased expression of Scn9a and Scn11a genes encoding Nav1.7 and Nav1.9 voltage‐gated sodium channels respectively, that are crucial in subthreshold amplification and action potential initiation in nociceptors. Further transcriptomic analyses of Meox2+/− DRG revealed downregulation of a specific subset of genes including those previously associated with pain perception, such as PENK and NPY. Based on these observations, we propose a novel role of MEOX2 in primary afferent nociceptor neurons for the maintenance of a transcriptional programme required for proper perception of acute and inflammatory noxious stimuli.
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Affiliation(s)
- Tomislav Kokotović
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases Vienna Austria
- CeMM‐Research Center for Molecular Medicine of the Austrian Academy of Sciences Vienna Austria
- Department of Neurology Medical University of Vienna Austria
| | | | - Michiel Langeslag
- Department of Physiology and Medical Physics Institute of Physiology Medical University of Innsbruck Austria
- Institute of Pharmacy and Center for Molecular Biosciences Innsbruck (CMBI) University of Innsbruck Austria
- Department of Pharmacology Medical University of Innsbruck Austria
| | - Cosmin I. Ciotu
- Institute of Physiology Medical University of Vienna Austria
| | - Christopher W. Fell
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases Vienna Austria
- CeMM‐Research Center for Molecular Medicine of the Austrian Academy of Sciences Vienna Austria
- Department of Neurology Medical University of Vienna Austria
| | - Angelica Scaramuzza
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases Vienna Austria
| | | | - Michaela Kress
- Department of Physiology and Medical Physics Institute of Physiology Medical University of Innsbruck Austria
| | - Josef M. Penninger
- Institute of Molecular Biotechnology of the Austrian Academy of Sciences VBC – Vienna BioCenter Campus Vienna Austria
- Department of Medical Genetics Life Science Institute University of British Columbia Vancouver Canada
| | - Vanja Nagy
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases Vienna Austria
- CeMM‐Research Center for Molecular Medicine of the Austrian Academy of Sciences Vienna Austria
- Department of Neurology Medical University of Vienna Austria
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5
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Kalpachidou T, Malsch P, Qi Y, Mair N, Geley S, Quarta S, Kummer KK, Kress M. Genetic and functional evidence for gp130/IL6ST-induced transient receptor potential ankyrin 1 upregulation in uninjured but not injured neurons in a mouse model of neuropathic pain. Pain 2022; 163:579-589. [PMID: 34252913 PMCID: PMC8832546 DOI: 10.1097/j.pain.0000000000002402] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 06/27/2021] [Accepted: 06/30/2021] [Indexed: 11/26/2022]
Abstract
ABSTRACT Peripheral nerve injuries result in pronounced alterations in dorsal root ganglia, which can lead to the development of neuropathic pain. Although the polymodal mechanosensitive transient receptor potential ankyrin 1 (TRPA1) ion channel is emerging as a relevant target for potential analgesic therapies, preclinical studies do not provide unequivocal mechanistic insight into its relevance for neuropathic pain pathogenesis. By using a transgenic mouse model with a conditional depletion of the interleukin-6 (IL-6) signal transducer gp130 in Nav1.8 expressing neurons (SNS-gp130-/-), we provide a mechanistic regulatory link between IL-6/gp130 and TRPA1 in the spared nerve injury (SNI) model. Spared nerve injury mice developed profound mechanical hypersensitivity as indicated by decreased withdrawal thresholds in the von Frey behavioral test in vivo, as well as a significant increase in mechanosensitivity of unmyelinated nociceptive primary afferents in ex vivo skin-nerve recordings. In contrast to wild type and control gp130fl/fl animals, SNS-gp130-/- mice did not develop mechanical hypersensitivity after SNI and exhibited low levels of Trpa1 mRNA in sensory neurons, which were partially restored by adenoviral gp130 re-expression in vitro. Importantly, uninjured but not injured neurons developed increased responsiveness to the TRPA1 agonist cinnamaldehyde, and neurons derived from SNS-gp130-/- mice after SNI were significantly less responsive to cinnamaldehyde. Our study shows for the first time that TRPA1 upregulation is attributed specifically to uninjured neurons in the SNI model, and this depended on the IL-6 signal transducer gp130. We provide a solution to the enigma of TRPA1 regulation after nerve injury and stress its significance as an important target for neuropathic pain disorders.
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Affiliation(s)
- Theodora Kalpachidou
- Institute of Physiology, DPMP, Medical University of Innsbruck, Innsbruck, Austria
| | - Philipp Malsch
- Institute of Physiology, DPMP, Medical University of Innsbruck, Innsbruck, Austria
| | - Yanmei Qi
- Institute of Physiology, DPMP, Medical University of Innsbruck, Innsbruck, Austria
| | - Norbert Mair
- Institute of Physiology, DPMP, Medical University of Innsbruck, Innsbruck, Austria
| | - Stephan Geley
- Institute of Pathophysiology, Biocenter, Medical University of Innsbruck, Innsbruck, Austria
| | - Serena Quarta
- Institute of Physiology, DPMP, Medical University of Innsbruck, Innsbruck, Austria
| | - Kai K. Kummer
- Institute of Physiology, DPMP, Medical University of Innsbruck, Innsbruck, Austria
| | - Michaela Kress
- Institute of Physiology, DPMP, Medical University of Innsbruck, Innsbruck, Austria
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6
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Kokotović T, Langeslag M, Lenartowicz EM, Manion J, Fell CW, Alehabib E, Tafakhori A, Darvish H, Bellefroid EJ, Neely GG, Kress M, Penninger JM, Nagy V. PRDM12 Is Transcriptionally Active and Required for Nociceptor Function Throughout Life. Front Mol Neurosci 2021; 14:720973. [PMID: 34646120 PMCID: PMC8502974 DOI: 10.3389/fnmol.2021.720973] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Accepted: 08/20/2021] [Indexed: 12/21/2022] Open
Abstract
PR domain-containing member 12 (PRDM12) is a key developmental transcription factor in sensory neuronal specification and survival. Patients with rare deleterious variants in PRDM12 are born with congenital insensitivity to pain (CIP) due to the complete absence of a subtype of peripheral neurons that detect pain. In this paper, we report two additional CIP cases with a novel homozygous PRDM12 variant. To elucidate the function of PRDM12 during mammalian development and adulthood, we generated temporal and spatial conditional mouse models. We find that PRDM12 is expressed throughout the adult nervous system. We observed that loss of PRDM12 during mid-sensory neurogenesis but not in the adult leads to reduced survival. Comparing cellular biophysical nociceptive properties in developmental and adult-onset PRDM12 deletion mouse models, we find that PRDM12 is necessary for proper nociceptive responses throughout life. However, we find that PRDM12 regulates distinct age-dependent transcriptional programs. Together, our results implicate PRDM12 as a viable therapeutic target for specific pain therapies even in adults.
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Affiliation(s)
- Tomislav Kokotović
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria.,CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria.,Department of Neurology, Medical University of Vienna, Vienna, Austria
| | - Michiel Langeslag
- Department of Physiology and Medical Physics, Institute of Physiology, Medical University of Innsbruck, Innsbruck, Austria.,Institute of Pharmacy and Center for Molecular Biosciences Innsbruck (CMBI), University of Innsbruck, Innsbruck, Austria.,Department of Pharmacology, Medical University of Innsbruck, Innsbruck, Austria
| | - Ewelina M Lenartowicz
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria.,Department of Neurology, Medical University of Vienna, Vienna, Austria
| | - John Manion
- Charles Perkins Centre, Dr. John and Anne Chong Lab for Functional Genomics, Centenary Institute, and School of Life and Environmental Sciences, University of Sydney, Camperdown, NSW, Australia
| | - Christopher W Fell
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria.,CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria.,Department of Neurology, Medical University of Vienna, Vienna, Austria
| | - Elham Alehabib
- Student Research Committee, Department of Medical Genetics, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Abbas Tafakhori
- Iranian Center of Neurological Research, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Hossein Darvish
- Neuroscience Research Center, Faculty of Medicine, Golestan University of Medical Sciences, Gorgan, Iran
| | - Eric J Bellefroid
- ULB Neuroscience Institute (UNI), Université Libre de Bruxelles (ULB), Gosselies, Belgium
| | - G Gregory Neely
- Charles Perkins Centre, Dr. John and Anne Chong Lab for Functional Genomics, Centenary Institute, and School of Life and Environmental Sciences, University of Sydney, Camperdown, NSW, Australia
| | - Michaela Kress
- Department of Physiology and Medical Physics, Institute of Physiology, Medical University of Innsbruck, Innsbruck, Austria
| | - Josef M Penninger
- Institute of Molecular Biotechnology of the Austrian Academy of Sciences, VBC - Vienna BioCenter, Vienna, Austria.,Department of Medical Genetics, Life Science Institute, University of British Columbia, Vancouver, BC, Canada
| | - Vanja Nagy
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria.,CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria.,Department of Neurology, Medical University of Vienna, Vienna, Austria
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7
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Li Q, Qin L, Li J. IL-6 signaling pathway contributes to exercise pressor reflex in rats with femoral artery occlusion in association with Kv4 activity in muscle afferent nerves. Physiol Rep 2021; 9:e14935. [PMID: 34231965 PMCID: PMC8261684 DOI: 10.14814/phy2.14935] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 05/26/2021] [Indexed: 12/02/2022] Open
Abstract
Interleukin-6 (IL-6) via trans-signaling pathway plays a role in modifying muscle sensory nerve-exaggerated exercise pressor reflex in rats with ligated femoral arteries, but the underlying mechanisms are poorly understood. It is known that voltage-gated potassium channel subfamily member Kv4 channels contribute to the excitabilities of sensory neurons and neuronal signaling transduction. Thus, in this study, we determined that 1) IL-6 regulates the exaggerated exercise pressor reflex in rats with peripheral artery disease (PAD) induced by femoral artery ligation and 2) Kv4 channels in muscle dorsal root ganglion (DRG) neurons are engaged in the role played by IL-6 trans-signaling pathway. We found that the protein levels of IL-6 and its receptor IL-6R expression were increased in the DRGs of PAD rats with 3-day of femoral artery occlusion. Inhibition of muscle afferents' IL-6 trans-signaling pathway (gp130) by intra-arterial administration of SC144, a gp130 inhibitor, into the hindlimb muscles of PAD rats alleviated blood pressure response to static muscle contraction. On the other hand, we found that 3-day femoral occlusion decreased amplitude of Kv4 currents in rat muscle DRG neurons. The homo IL-6/IL-6Rα fusion protein (H. IL-6/6Rα), but not IL-6 alone significantly inhibited Kv4 currents in muscle DRG neurons; and the effect of H. IL-6/6Rα was largely reverted by SC144. In conclusion, our data suggest that via trans-signaling pathway upregulated IL-6 in muscle afferent nerves by ischemic hindlimb muscles inhibits the activity of Kv4 channels and thus likely leads to adjustments of the exercise pressor reflex in PAD.
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Affiliation(s)
- Qin Li
- Heart and Vascular InstituteThe Pennsylvania State University College of MedicineHersheyPAUSA
| | - Lu Qin
- Heart and Vascular InstituteThe Pennsylvania State University College of MedicineHersheyPAUSA
| | - Jianhua Li
- Heart and Vascular InstituteThe Pennsylvania State University College of MedicineHersheyPAUSA
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8
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Kummer KK, Zeidler M, Kalpachidou T, Kress M. Role of IL-6 in the regulation of neuronal development, survival and function. Cytokine 2021; 144:155582. [PMID: 34058569 DOI: 10.1016/j.cyto.2021.155582] [Citation(s) in RCA: 60] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 05/07/2021] [Accepted: 05/11/2021] [Indexed: 12/17/2022]
Abstract
The pleiotropic cytokine interleukin-6 (IL-6) is emerging as a molecule with both beneficial and destructive potentials. It can exert opposing actions triggering either neuron survival after injury or causing neurodegeneration and cell death in neurodegenerative or neuropathic disorders. Importantly, neurons respond differently to IL-6 and this critically depends on their environment and whether they are located in the peripheral or the central nervous system. In addition to its hub regulator role in inflammation, IL-6 is recently emerging as an important regulator of neuron function in health and disease, offering exciting possibilities for more mechanistic insight into the pathogenesis of mental, neurodegenerative and pain disorders and for developing novel therapies for diseases with neuroimmune and neurogenic pathogenic components.
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Affiliation(s)
- Kai K Kummer
- Institute of Physiology, Medical University of Innsbruck, Austria
| | | | | | - Michaela Kress
- Institute of Physiology, Medical University of Innsbruck, Austria.
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9
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Kalpachidou T, Kummer K, Kress M. Non-coding RNAs in neuropathic pain. Neuronal Signal 2020; 4:NS20190099. [PMID: 32587755 PMCID: PMC7306520 DOI: 10.1042/ns20190099] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 03/31/2020] [Accepted: 04/02/2020] [Indexed: 02/07/2023] Open
Abstract
Neuro-immune alterations in the peripheral and central nervous system play a role in the pathophysiology of chronic pain in general, and members of the non-coding RNA (ncRNA) family, specifically the short, 22 nucleotide microRNAs (miRNAs) and the long non-coding RNAs (lncRNAs) act as master switches orchestrating both immune as well as neuronal processes. Several chronic disorders reveal unique ncRNA expression signatures, which recently generated big hopes for new perspectives for the development of diagnostic applications. lncRNAs may offer perspectives as candidates indicative of neuropathic pain in liquid biopsies. Numerous studies have provided novel mechanistic insight into the role of miRNAs in the molecular sequelae involved in the pathogenesis of neuropathic pain along the entire pain pathway. Specific processes within neurons, immune cells, and glia as the cellular components of the neuropathic pain triad and the communication paths between them are controlled by specific miRNAs. Therefore, nucleotide sequences mimicking or antagonizing miRNA actions can provide novel therapeutic strategies for pain treatment, provided their human homologues serve the same or similar functions. Increasing evidence also sheds light on the function of lncRNAs, which converge so far mainly on purinergic signalling pathways both in neurons and glia, and possibly even other ncRNA species that have not been explored so far.
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Affiliation(s)
| | - Kai K. Kummer
- Institute of Physiology, Medical University of Innsbruck, Innsbruck, Austria
| | - Michaela Kress
- Institute of Physiology, Medical University of Innsbruck, Innsbruck, Austria
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10
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Analysis of the genetic variants associated with circulating levels of sgp130. Results from the IMPROVE study. Genes Immun 2020; 21:100-108. [PMID: 31932740 PMCID: PMC7182533 DOI: 10.1038/s41435-019-0090-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 11/12/2019] [Accepted: 12/23/2019] [Indexed: 01/06/2023]
Abstract
The genes regulating circulating levels of soluble gp130 (sgp130), the antagonist of the inflammatory response in atherosclerosis driven by interleukin 6, are largely unknown. Aims of the present study were to identify genetic loci associated with circulating sgp130 and to explore the potential association between variants associated with sgp130 and markers of subclinical atherosclerosis. The study is based on IMPROVE (n = 3703), a cardiovascular multicentre study designed to investigate the determinants of carotid intima media thickness, a measure of subclinical atherosclerosis. Genomic DNA was genotyped by the CardioMetaboChip and ImmunoChip. About 360,842 SNPs were tested for association with log-transformed sgp130, using linear regression adjusted for age, gender, and population stratification using PLINK v1.07. A p value of 1 × 10−5 was chosen as threshold for significance value. In an exploratory analysis, SNPs associated with sgp130 were tested for association with c-IMT measures. We identified two SNPs significantly associated with sgp130 levels and 24 showing suggestive association with sgp130 levels. One SNP (rs17688225) on chromosome 14 was positively associated with sgp130 serum levels (β = 0.03 SE = 0.007, p = 4.77 × 10−5) and inversely associated with c-IMT (c-IMTmean–maxβ = −0.001 SE = 0.005, p = 0.0342). Our data indicate that multiple loci regulate sgp130 levels and suggest a possible common pathway between sgp130 and c-IMT measures.
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11
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Alvarez P, Bogen O, Levine JD. Interleukin 6 decreases nociceptor expression of the potassium channel KV1.4 in a rat model of hand-arm vibration syndrome. Pain 2019; 160:1876-1882. [PMID: 31335655 PMCID: PMC6668361 DOI: 10.1097/j.pain.0000000000001570] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Chronic muscle pain is a prominent symptom of the hand-arm vibration syndrome (HAVS), an occupational disease induced by exposure to vibrating power tools, but the underlying mechanism remains unknown. We evaluated the hypothesis that vibration induces an interleukin 6 (IL-6)-mediated downregulation of the potassium voltage-gated channel subfamily A member 4 (KV1.4) in nociceptors leading to muscle pain. Adult male rats were submitted to a protocol of mechanical vibration of the right hind limb. Twenty-four hours after vibration, muscle hyperalgesia was observed, concomitant to increased levels of IL-6 in the gastrocnemius muscle and decreased expression of KV1.4 in the dorsal root ganglia. Local injection of neutralizing antibodies against IL-6 attenuated the muscle hyperalgesia induced by vibration, whereas antisense knockdown of this channel in the dorsal root ganglia mimicked the muscle hyperalgesia observed in the model of HAVS. Finally, knockdown of the IL-6 receptor signaling subunit glycoprotein 130 (gp130) attenuated both vibration-induced muscle hyperalgesia and downregulation of KV1.4. These results support the hypothesis that IL-6 plays a central role in the induction of muscle pain in HAVS. This likely occurs through intracellular signaling downstream to the IL-6 receptor subunit gp130, which decreases the expression of KV1.4 in nociceptors.
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Affiliation(s)
- Pedro Alvarez
- Department of Oral and Maxillofacial Surgery, University of California, San Francisco, USA
| | - Oliver Bogen
- Department of Oral and Maxillofacial Surgery, University of California, San Francisco, USA
| | - Jon D. Levine
- Department of Oral and Maxillofacial Surgery, University of California, San Francisco, USA
- Department of Medicine, University of California, San Francisco, USA
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Quarta S, Mitrić M, Kalpachidou T, Mair N, Schiefermeier-Mach N, Andratsch M, Qi Y, Langeslag M, Malsch P, Rose-John S, Kress M. Impaired mechanical, heat, and cold nociception in a murine model of genetic TACE/ADAM17 knockdown. FASEB J 2018; 33:4418-4431. [PMID: 30586315 PMCID: PMC6404580 DOI: 10.1096/fj.201801901r] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
TNF-α-converting enzyme, a member of the ADAM (A disintegrin and metalloproteinase) protease family and also known as ADAM17, regulates inflammation and regeneration in health and disease. ADAM17 targets are involved in pain development and hypersensitivity in animal models of inflammatory and neuropathic pain. However, the role of ADAM17 in the pain pathway is largely unknown. Therefore, we used the hypomorphic ADAM17 (ADAM17ex/ex) mouse model to investigate the importance of ADAM17 in nociceptive behavior, morphology, and function of primary afferent nociceptors. ADAM17ex/ex mice were hyposensitive to noxious stimulation, showing elevated mechanical thresholds as well as impaired heat and cold sensitivity. Despite these differences, skin thickness and innervation were comparable to controls. Although dorsal root ganglia of ADAM17ex/ex mice exhibited normal morphology of peptidergic and nonpeptidergic neurons, a small but significant reduction in the number of isolectin β-4–positive neurons was observed. Functional electrical properties of unmyelinated nociceptors showed differences in resting membrane potential, afterhyperpolarization, and firing patterns in specific subpopulations of sensory neurons in ADAM17ex/ex mice. However, spinal cord morphology and microglia activity in ADAM17ex/ex mice were not altered. Our data suggest that ADAM17 contributes to the processing of painful stimuli, with a complex mode of action orchestrating the function of neurons along the pain pathway.—Quarta, S., Mitrić, M., Kalpachidou, T., Mair, N., Schiefermeier-Mach, N., Andratsch, M., Qi, Y., Langeslag, M., Malsch, P., Rose-John, S., Kress, M. Impaired mechanical, heat, and cold nociception in a murine model of genetic TACE/ADAM17 knockdown.
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Affiliation(s)
- Serena Quarta
- Division of Physiology, Department of Physiology and Medical Physics, Innsbruck Medical University, Innsbruck, Austria; and
| | - Miodrag Mitrić
- Division of Physiology, Department of Physiology and Medical Physics, Innsbruck Medical University, Innsbruck, Austria; and
| | - Theodora Kalpachidou
- Division of Physiology, Department of Physiology and Medical Physics, Innsbruck Medical University, Innsbruck, Austria; and
| | - Norbert Mair
- Division of Physiology, Department of Physiology and Medical Physics, Innsbruck Medical University, Innsbruck, Austria; and
| | - Natalia Schiefermeier-Mach
- Division of Physiology, Department of Physiology and Medical Physics, Innsbruck Medical University, Innsbruck, Austria; and
| | - Manfred Andratsch
- Division of Physiology, Department of Physiology and Medical Physics, Innsbruck Medical University, Innsbruck, Austria; and
| | - Yanmei Qi
- Division of Physiology, Department of Physiology and Medical Physics, Innsbruck Medical University, Innsbruck, Austria; and
| | - Michiel Langeslag
- Division of Physiology, Department of Physiology and Medical Physics, Innsbruck Medical University, Innsbruck, Austria; and
| | - Philipp Malsch
- Division of Physiology, Department of Physiology and Medical Physics, Innsbruck Medical University, Innsbruck, Austria; and
| | - Stefan Rose-John
- Department of Biochemistry, Christian-Albrechts-University Kiel, Kiel, Germany
| | - Michaela Kress
- Division of Physiology, Department of Physiology and Medical Physics, Innsbruck Medical University, Innsbruck, Austria; and
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Remeniuk B, King T, Suktankhar D, Nippert A, Li N, Li F, Cheng K, Rice KC, Porreca F. Disease modifying actions of interleukin-6 blockade in a rat model of bone cancer pain. Pain 2018; 159:684-698. [PMID: 29300279 PMCID: PMC5911943 DOI: 10.1097/j.pain.0000000000001139] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Metastasis of cancer to the skeleton represents a debilitating turning point in the lives of patients. Skeletal metastasis leads to moderate to severe ongoing pain along with bone remodeling that can result in fracture, events that dramatically diminish quality of life. Interleukin-6 (IL-6) levels are elevated in patients with metastatic breast cancer and are associated with a lower survival rate. We therefore determined the consequences of inhibition of IL-6 signaling using a novel small molecule antagonist, TB-2-081, on bone integrity, tumor progression, and pain in a rodent model of breast cancer. Rat MAT B III mammary adenocarcinoma cells were injected and sealed within the tibia of female Fischer rats. Growth of these cells within the rat tibia elicited increased IL-6 levels both within the bone exudate and in the plasma, produced ongoing pain and evoked hypersensitivity, and bone fracture that was observed by approximately day 12. Systemic TB-2-081 delivered by subcutaneous osmotic minipumps starting at tumor implantation prevented tumor-induced ongoing bone pain and evoked hypersensitivity without altering tumor growth. Remarkably, TB-2-081 infusion significantly reduced osteolytic and osteoblastic bone remodeling and time to fracture likely by decreasing osteoclastogenesis and associated increase in bone resorption. These findings indicate that blockade of IL-6 signaling may represent a viable, disease-modifying strategy to prevent tumor-induced bone remodeling allowing for stabilization of bone and decreased fractures as well as diminished ongoing pain that may improve quality of life of patients with skeletal metastases. Notably, anti-IL-6 antibodies are clinically available allowing for rapid testing of these possibilities in humans.
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Affiliation(s)
- Bethany Remeniuk
- Cancer Biology Graduate Interdisciplinary Program, University of Arizona Cancer Center, Tucson, AZ, USA
| | - Tamara King
- Department of Biomedical Sciences, College of Osteopathic Medicine, Center for Excellence in the Neurosciences, University of New England, Biddeford, ME, USA
| | - Devki Suktankhar
- Cancer Biology Graduate Interdisciplinary Program, University of Arizona Cancer Center, Tucson, AZ, USA
| | - Amy Nippert
- Department of Pharmacology, University of Arizona, Tucson, AZ, USA
| | - Nancy Li
- Department of Pharmacology, University of Arizona, Tucson, AZ, USA
| | - Fuying Li
- Section on Drug Design and Synthesis, National Institute on Drug Abuse and National Institute on Alcohol Abuse and Alcoholism Bethesda, MD, USA
| | - Kejun Cheng
- Section on Drug Design and Synthesis, National Institute on Drug Abuse and National Institute on Alcohol Abuse and Alcoholism Bethesda, MD, USA
| | - Kenner C. Rice
- Section on Drug Design and Synthesis, National Institute on Drug Abuse and National Institute on Alcohol Abuse and Alcoholism Bethesda, MD, USA
| | - Frank Porreca
- Cancer Biology Graduate Interdisciplinary Program, University of Arizona Cancer Center, Tucson, AZ, USA
- Department of Pharmacology, University of Arizona, Tucson, AZ, USA
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Kummer KK, Kalpachidou T, Kress M, Langeslag M. Signatures of Altered Gene Expression in Dorsal Root Ganglia of a Fabry Disease Mouse Model. Front Mol Neurosci 2018; 10:449. [PMID: 29422837 PMCID: PMC5788883 DOI: 10.3389/fnmol.2017.00449] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 12/22/2017] [Indexed: 12/19/2022] Open
Abstract
Fabry disease is an X-linked lysosomal storage disorder with involvement of the nervous system. Accumulation of glycosphingolipids within peripheral nerves and/or dorsal root ganglia results in pain due to small-fiber neuropathy, which affects the majority of patients already in early childhood. The α-galactosidase A deficient mouse proved to be an adequate model for Fabry disease, as it shares many symptoms including altered temperature sensitivity and pain perception. To characterize the signatures of gene expression that might underlie Fabry disease-associated sensory deficits and pain, we performed one-color based hybridization microarray expression profiling of DRG explants from adult α-galactosidase A deficient mice and age-matched wildtype controls. Protein-protein interaction (PPI) and pathway analyses were performed for differentially regulated mRNAs. We found 812 differentially expressed genes between adult α-galactosidase A deficient mice and age-matched wildtype controls, 506 of them being upregulated, and 306 being downregulated. Among the enriched pathways and processes, the disease-specific pathways “lysosome” and “ceramide metabolic process” were identified, enhancing reliability of the current analysis. Novel pathways that we identified include “G-protein coupled receptor signaling” and “retrograde transport” for the upregulated genes. From the analysis of downregulated genes, immune-related pathways, autoimmune, and infection pathways emerged. The current analysis is the first to present a differential gene expression profile of DRGs from α-galactosidase A deficient mice, thereby providing knowledge on possible mechanisms underlying neuropathic pain related symptoms in Fabry patients. Therefore, the presented data provide new insights into the development of the pain phenotype and might lead to new treatment strategies.
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Affiliation(s)
- Kai K Kummer
- Division of Physiology, Department of Physiology and Medical Physics, Medical University of Innsbruck, Innsbruck, Austria
| | - Theodora Kalpachidou
- Division of Physiology, Department of Physiology and Medical Physics, Medical University of Innsbruck, Innsbruck, Austria
| | - Michaela Kress
- Division of Physiology, Department of Physiology and Medical Physics, Medical University of Innsbruck, Innsbruck, Austria
| | - Michiel Langeslag
- Division of Physiology, Department of Physiology and Medical Physics, Medical University of Innsbruck, Innsbruck, Austria
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15
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Namer B, Ørstavik K, Schmidt R, Mair N, Kleggetveit IP, Zeidler M, Martha T, Jorum E, Schmelz M, Kalpachidou T, Kress M, Langeslag M. Changes in Ionic Conductance Signature of Nociceptive Neurons Underlying Fabry Disease Phenotype. Front Neurol 2017; 8:335. [PMID: 28769867 PMCID: PMC5510289 DOI: 10.3389/fneur.2017.00335] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Accepted: 06/27/2017] [Indexed: 12/29/2022] Open
Abstract
The first symptom arising in many Fabry patients is neuropathic pain due to changes in small myelinated and unmyelinated fibers in the periphery, which is subsequently followed by a loss of sensory perception. Here we studied changes in the peripheral nervous system of Fabry patients and a Fabry mouse model induced by deletion of α-galactosidase A (Gla-/0). The skin innervation of Gla-/0 mice resembles that of the human Fabry patients. In Fabry diseased humans and Gla-/0 mice, we observed similar sensory abnormalities, which were also observed in nerve fiber recordings in both patients and mice. Electrophysiological recordings of cultured Gla-/0 nociceptors revealed that the conductance of voltage-gated Na+ and Ca2+ currents was decreased in Gla-/0 nociceptors, whereas the activation of voltage-gated K+ currents was at more depolarized potentials. Conclusively, we have observed that reduced sensory perception due to small-fiber degeneration coincides with altered electrophysiological properties of sensory neurons.
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Affiliation(s)
- Barbara Namer
- Department of Physiology and Pathophysiology, University of Erlangen-Nuremberg, Erlangen, Germany.,Department of Anesthesiology, Heidelberg University, Mannheim, Germany
| | - Kirstin Ørstavik
- Section of Clinical Neurophysiology, Department of Neurology, Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - Roland Schmidt
- Department of Clinical Neurophysiology, Uppsala University Hospital, Uppsala, Sweden
| | - Norbert Mair
- Department of Physiology and Medical Physics, Division of Physiology, Medical University of Innsbruck, Innsbruck, Austria
| | - Inge Petter Kleggetveit
- Section of Clinical Neurophysiology, Department of Neurology, Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - Maximillian Zeidler
- Department of Physiology and Medical Physics, Division of Physiology, Medical University of Innsbruck, Innsbruck, Austria
| | - Theresa Martha
- Department of Physiology and Medical Physics, Division of Physiology, Medical University of Innsbruck, Innsbruck, Austria
| | - Ellen Jorum
- Department of Anesthesiology, Heidelberg University, Mannheim, Germany.,Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Martin Schmelz
- Department of Anesthesiology, Heidelberg University, Mannheim, Germany
| | - Theodora Kalpachidou
- Department of Physiology and Medical Physics, Division of Physiology, Medical University of Innsbruck, Innsbruck, Austria
| | - Michaela Kress
- Department of Physiology and Medical Physics, Division of Physiology, Medical University of Innsbruck, Innsbruck, Austria
| | - Michiel Langeslag
- Department of Physiology and Medical Physics, Division of Physiology, Medical University of Innsbruck, Innsbruck, Austria
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Aromolaran KA, Goldstein PA. Ion channels and neuronal hyperexcitability in chemotherapy-induced peripheral neuropathy; cause and effect? Mol Pain 2017; 13:1744806917714693. [PMID: 28580836 PMCID: PMC5480635 DOI: 10.1177/1744806917714693] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Revised: 05/12/2017] [Accepted: 05/16/2017] [Indexed: 12/18/2022] Open
Abstract
Abstract Cancer is the second leading cause of death worldwide and is a major global health burden. Significant improvements in survival have been achieved, due in part to advances in adjuvant antineoplastic chemotherapy. The most commonly used antineoplastics belong to the taxane, platinum, and vinca alkaloid families. While beneficial, these agents are frequently accompanied by severe side effects, including chemotherapy-induced peripheral neuropathy (CPIN). While CPIN affects both motor and sensory systems, the majority of symptoms are sensory, with pain, tingling, and numbness being the predominant complaints. CPIN not only decreases the quality of life of cancer survivors but also can lead to discontinuation of treatment, thereby adversely affecting survival. Consequently, minimizing the incidence or severity of CPIN is highly desirable, but strategies to prevent and/or treat CIPN have proven elusive. One difficulty in achieving this goal arises from the fact that the molecular and cellular mechanisms that produce CPIN are not fully known; however, one common mechanism appears to be changes in ion channel expression in primary afferent sensory neurons. The processes that underlie chemotherapy-induced changes in ion channel expression and function are poorly understood. Not all antineoplastic agents directly affect ion channel function, suggesting additional pathways may contribute to the development of CPIN Indeed, there are indications that these drugs may mediate their effects through cellular signaling pathways including second messengers and inflammatory cytokines. Here, we focus on ion channelopathies as causal mechanisms for CPIN and review the data from both pre-clinical animal models and from human studies with the aim of facilitating the development of appropriate strategies to prevent and/or treat CPIN.
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Affiliation(s)
- Kelly A Aromolaran
- Department of Anesthesiology, Weill Cornell Medical College, New York, NY, USA
| | - Peter A Goldstein
- Department of Anesthesiology, Weill Cornell Medical College, New York, NY, USA
- Department of Medicine, Weill Cornell Medical College, New York, NY, USA
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17
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Weth-Malsch D, Langeslag M, Beroukas D, Zangrandi L, Kastenberger I, Quarta S, Malsch P, Kalpachidou T, Schwarzer C, Proia RL, Haberberger RV, Kress M. Ablation of Sphingosine 1-Phosphate Receptor Subtype 3 Impairs Hippocampal Neuron Excitability In vitro and Spatial Working Memory In vivo. Front Cell Neurosci 2016; 10:258. [PMID: 27872583 PMCID: PMC5097928 DOI: 10.3389/fncel.2016.00258] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Accepted: 10/21/2016] [Indexed: 01/01/2023] Open
Abstract
Understanding the role of the bioactive lipid mediator sphingosine 1-phosphate (S1P) within the central nervous system has recently gained more and more attention, as it has been connected to major diseases such as multiple sclerosis and Alzheimer's disease. Even though much data about the functions of the five S1P receptors has been collected for other organ systems, we still lack a complete understanding for their specific roles, in particular within the brain. Therefore, it was the aim of this study to further elucidate the role of S1P receptor subtype 3 (S1P3) in vivo and in vitro with a special focus on the hippocampus. Using an S1P3 knock-out mouse model we applied a range of behavioral tests, performed expression studies, and whole cell patch clamp recordings in acute hippocampal slices. We were able to show that S1P3 deficient mice display a significant spatial working memory deficit within the T-maze test, but not in anxiety related tests. Furthermore, S1p3 mRNA was expressed throughout the hippocampal formation. Principal neurons in area CA3 lacking S1P3 showed significantly increased interspike intervals and a significantly decreased input resistance. Upon stimulation with S1P CA3 principal neurons from both wildtype and S1P3−/− mice displayed significantly increased evoked EPSC amplitudes and decay times, whereas rise times remained unchanged. These results suggest a specific involvement of S1P3 for the establishment of spatial working memory and neuronal excitability within the hippocampus.
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Affiliation(s)
- Daniela Weth-Malsch
- Division of Physiology, Department of Physiology and Medical Physics, Medical University of Innsbruck Innsbruck, Austria
| | - Michiel Langeslag
- Division of Physiology, Department of Physiology and Medical Physics, Medical University of Innsbruck Innsbruck, Austria
| | - Dimitra Beroukas
- Anatomy and Histology and Centre for Neuroscience, Flinders University Adelaide, SA, Australia
| | - Luca Zangrandi
- Department of Pharmacology, Medical University of Innsbruck Innsbruck, Austria
| | - Iris Kastenberger
- Department of Pharmacology, Medical University of Innsbruck Innsbruck, Austria
| | - Serena Quarta
- Division of Physiology, Department of Physiology and Medical Physics, Medical University of Innsbruck Innsbruck, Austria
| | - Philipp Malsch
- Division of Physiology, Department of Physiology and Medical Physics, Medical University of Innsbruck Innsbruck, Austria
| | - Theodora Kalpachidou
- Division of Physiology, Department of Physiology and Medical Physics, Medical University of Innsbruck Innsbruck, Austria
| | - Christoph Schwarzer
- Department of Pharmacology, Medical University of Innsbruck Innsbruck, Austria
| | - Richard L Proia
- Genetics of Development and Disease Branch, National Institute of Diabetes and Digestive and Kidney Diseases Bethesda, MD, USA
| | - Rainer V Haberberger
- Anatomy and Histology and Centre for Neuroscience, Flinders University Adelaide, SA, Australia
| | - Michaela Kress
- Division of Physiology, Department of Physiology and Medical Physics, Medical University of Innsbruck Innsbruck, Austria
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Abstract
PURPOSE OF REVIEW Poor management of chronic pain remains a significant cause of misery with huge socioeconomic costs. Accumulating research in potassium (K+) channel physiology has uncovered several promising leads for the development of novel analgesics. RECENT FINDINGS We now recognize that certain K+ channel subunits are directly gated to pain-relevant stimuli (Kv1.1, K2P) whereas others are specifically modulated by inflammatory processes (Kv7, BKCA, K2P). Genetic analyses illustrate that K+ channel gene variation can predict pain sensitivity (KCNS1, GIRKs), risk for persistent pain (KCNS1, GIRKs, TRESK) and analgesic effectiveness (GIRK2). Importantly, preclinical studies confirm that K+ channel dysfunction can be a pain trigger in traumatic neuropathies (Kv9.1/Kv2.1, Kv7, Kv1.2) and migraine (TRESK). Finally, emerging data suggest that even pain in diabetes, bone cancer and autoimmune neuropathies may have K+ channel dysfunction constituents. SUMMARY There is a long-sought need for superior pharmacotherapy of pain syndromes. Although universal enhancement of K+ channel function in the periphery can decrease nociceptive excitability irrespective of the underlying cause, a more refined targeting of subunits with dominant nociceptive roles could yield highly efficacious treatments with fewer side-effects. The ongoing characterization of molecular interactions linking K+ channel dysfunction to pain is instrumental for identifying candidates with the most therapeutic potential.
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Ebbinghaus M, Segond von Banchet G, Massier J, Gajda M, Bräuer R, Kress M, Schaible HG. Interleukin-6-dependent influence of nociceptive sensory neurons on antigen-induced arthritis. Arthritis Res Ther 2015; 17:334. [PMID: 26590032 PMCID: PMC4654804 DOI: 10.1186/s13075-015-0858-0] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Accepted: 11/09/2015] [Indexed: 02/07/2023] Open
Abstract
INTRODUCTION Interleukin-6 (IL-6) is an important mediator of inflammation. In addition to cells involved in inflammation, sensory nociceptive neurons express the IL-6 signal-transducer glycoprotein 130 (gp130). These neurons are not only involved in pain generation but also produce neurogenic inflammation by release of neuropeptides such as calcitonin gene-related peptide (CGRP). Whether IL-6 activation of sensory neurons contributes to the induction of inflammation is unknown. This study explored whether the action of IL-6 on sensory neurons plays a role in the generation of neurogenic inflammation and arthritis induction. METHODS In SNS-gp130(-/-) mice lacking gp130 selectively in sensory neurons and appropriate control littermates (SNS-gp130(flox/flox)), we induced antigen-induced arthritis (AIA), and assessed swelling, histopathological arthritis scores, pain scores, expression of CGRP in sensory neurons, serum concentrations of CGRP and cytokines, and the cytokine release from single cell suspensions from lymph nodes and spleens. In wild-type mice CGRP release was determined during development of AIA and, in cultured sensory neurons, upon IL-6 stimulation. RESULTS Compared to SNS-gp130(flox/flox) mice SNS-gp130(-/-) mice showed significantly weaker initial swelling, reduced serum concentrations of CGRP, IL-6, and IL-2, no inflammation-evoked upregulation of CGRP in sensory neurons, but similar histopathological arthritis scores during AIA. During the initial swelling phase of AIA, CGRP was significantly increased in the serum, knee and spleen. In vitro, IL-6 augmented the release of CGRP from cultured sensory neurons. Upon antigen-specific restimulation lymphocytes from SNS-gp130(-/-) mice released more interleukin-17 and interferon-γ than lymphocytes from SNS-gp130(flox/flox) mice. In naive lymphocytes from SNS-gp130(flox/flox) and SNS-gp130(-/-) mice CGRP reduced the release of IL-2 (a cytokine which inhibits the release of interleukin-17 and interferon-γ). CONCLUSIONS IL-6 signaling in sensory neurons plays a role in the expression of arthritis. Selective deletion of gp130 signaling in sensory neurons reduces the swelling of the joint (most likely by reducing neurogenic inflammation) but increases some proinflammatory systemic cellular responses such as the release of interleukin-17 and interferon-γ from lymphocytes upon antigen-specific restimulation. Thus IL-6 signaling in sensory neurons is not only involved in pain generation but also in the coordination of the inflammatory response.
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Affiliation(s)
- Matthias Ebbinghaus
- Institute of Physiology I/Neurophysiology, Jena University Hospital - Friedrich Schiller University Jena, Teichgraben 8, 07740, Jena, Germany.
| | - Gisela Segond von Banchet
- Institute of Physiology I/Neurophysiology, Jena University Hospital - Friedrich Schiller University Jena, Teichgraben 8, 07740, Jena, Germany.
| | - Julia Massier
- Institute of Physiology I/Neurophysiology, Jena University Hospital - Friedrich Schiller University Jena, Teichgraben 8, 07740, Jena, Germany.
| | - Mieczyslaw Gajda
- Institute of Pathology, Jena University Hospital - Friedrich Schiller University Jena, Ziegelmühlenweg 1, 07740, Jena, Germany.
| | - Rolf Bräuer
- Institute of Pathology, Jena University Hospital - Friedrich Schiller University Jena, Ziegelmühlenweg 1, 07740, Jena, Germany.
| | - Michaela Kress
- Division of Physiology, Department of Physiology and Medical Physics, Innsbruck Medical University, Fritz-Pregl-Strasse 3, 6020, Innsbruck, Austria.
| | - Hans-Georg Schaible
- Institute of Physiology I/Neurophysiology, Jena University Hospital - Friedrich Schiller University Jena, Teichgraben 8, 07740, Jena, Germany.
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Kuzdas-Wood D, Irschick R, Theurl M, Malsch P, Mair N, Mantinger C, Wanschitz J, Klimaschewski L, Poewe W, Stefanova N, Wenning GK. Involvement of Peripheral Nerves in the Transgenic PLP-α-Syn Model of Multiple System Atrophy: Extending the Phenotype. PLoS One 2015; 10:e0136575. [PMID: 26496712 PMCID: PMC4619736 DOI: 10.1371/journal.pone.0136575] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Accepted: 08/05/2015] [Indexed: 11/18/2022] Open
Abstract
Multiple system atrophy (MSA) is a fatal, rapidly progressive neurodegenerative disease with (oligodendro-)glial cytoplasmic α-synuclein (α-syn) inclusions (GCIs). Peripheral neuropathies have been reported in up to 40% of MSA patients, the cause remaining unclear. In a transgenic MSA mouse model featuring GCI-like inclusion pathology based on PLP-promoter driven overexpression of human α-syn in oligodendroglia motor and non-motor deficits are associated with MSA-like neurodegeneration. Since α-syn is also expressed in Schwann cells we aimed to investigate whether peripheral nerves are anatomically and functionally affected in the PLP-α-syn MSA mouse model.
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Affiliation(s)
- Daniela Kuzdas-Wood
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Tirol, Austria
| | - Regina Irschick
- Department of Anatomy, Histology and Embryology, Division of Clinical and Functional Anatomy, Medical University of Innsbruck, 6020 Innsbruck, Austria
- Department of Anatomy, Histology and Embryology, Division of Neuroanatomy, Medical University of Innsbruck, 6020 Innsbruck, Austria
| | - Markus Theurl
- Department of Cardiology and Angiology, Medical University of Innsbruck, Innsbruck, Tirol, Austria
| | - Philipp Malsch
- Department of Physiology and Medical Physics, Medical University of Innsbruck, Innsbruck, Tirol, Austria
| | - Norbert Mair
- Department of Physiology and Medical Physics, Medical University of Innsbruck, Innsbruck, Tirol, Austria
| | - Christine Mantinger
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Tirol, Austria
| | - Julia Wanschitz
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Tirol, Austria
| | - Lars Klimaschewski
- Department of Anatomy, Histology and Embryology, Division of Clinical and Functional Anatomy, Medical University of Innsbruck, 6020 Innsbruck, Austria
| | - Werner Poewe
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Tirol, Austria
| | - Nadia Stefanova
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Tirol, Austria
| | - Gregor K. Wenning
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Tirol, Austria
- * E-mail:
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Massier J, Eitner A, Segond von Banchet G, Schaible HG. Effects of differently activated rodent macrophages on sensory neurons: implications for arthritis pain. Arthritis Rheumatol 2015; 67:2263-72. [PMID: 25833104 DOI: 10.1002/art.39134] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Accepted: 03/24/2015] [Indexed: 01/17/2023]
Abstract
OBJECTIVE In arthritis, macrophages invade the affected joint. Experimental arthritis models have shown that macrophages also invade the dorsal root ganglia (DRGs) of the inflamed segments in which the perikarya of sensory neurons are located. It is unclear whether this macrophage invasion contributes to arthritis pain and/or furthers neuronal damage. The present study was undertaken to investigate how differently activated macrophages affect DRG neurons. METHODS We determined the phenotype of macrophages in the DRGs of rats with antigen-induced arthritis (AIA). In a DRG neuron-macrophage coculture system, we investigated whether differently activated macrophages (stimulated with either lipopolysaccharide [LPS]/interferon-γ [IFNγ], tumor necrosis factor [TNF], or interleukin-4) damage DRG neurons and/or stimulate them to release the mediator calcitonin gene-related peptide (CGRP), which promotes pain and neurogenic inflammation. RESULTS Macrophages in the DRGs of rats with AIA showed the phenotype of TNF-stimulated macrophages but did not express inducible nitric oxide synthase, which was found in cultured macrophages only after LPS/IFNγ activation. In neuron-macrophage cocultures, activation of macrophages stimulated DRG neurons to release CGRP within 1 hour, indicating neuronal activation by macrophages. Only 48-hour activation of macrophages with LPS/IFNγ increased the neuronal cell death rate in culture, provided that the macrophages were in direct contact with DRG neurons. This effect was dependent on nitric oxide. CONCLUSION Macrophages have the potential to stimulate sensory neurons in the DRGs, and this may contribute to arthritis pain. If they are classically activated, such as after LPS/IFNγ stimulation, this may also further neuronal cell death. This is not the case in AIA but may occur in models involving damage of sensory neurons.
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Affiliation(s)
- Julia Massier
- Jena University Hospital and Friedrich Schiller University of Jena, Jena, Germany
| | - Annett Eitner
- Jena University Hospital and Friedrich Schiller University of Jena, Jena, Germany
| | | | - Hans-Georg Schaible
- Jena University Hospital and Friedrich Schiller University of Jena, Jena, Germany
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Langeslag M, Quarta S, Leitner MG, Kress M, Mair N. Sphingosine 1-phosphate to p38 signaling via S1P1 receptor and Gαi/o evokes augmentation of capsaicin-induced ionic currents in mouse sensory neurons. Mol Pain 2014; 10:74. [PMID: 25431213 PMCID: PMC4280769 DOI: 10.1186/1744-8069-10-74] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Accepted: 11/03/2014] [Indexed: 12/13/2022] Open
Abstract
The perception of painful thermal stimuli by sensory neurons is largely mediated by TRPV1. Upon tissue injury or inflammation, S1P is secreted by thrombocytes as part of an inflammatory cocktail, which sensitizes nociceptive neurons towards thermal stimuli. S1P acts on G-protein coupled receptors that are expressed in sensory neurons and sensitize TRPV1 channels towards thermal stimuli. In this study, the S1P mediated signaling pathway required for sensitization of TRPV1 channels was explored.The capsaicin induced peak inward current (ICAPS) of sensory neurons was significantly increased after S1P stimulation within minutes after application. The potentiation of ICAPS resulted from activation of Gαi through G-protein coupled receptors for S1P. Consequently, Gαi led to a signaling cascade, involving phosphoinositide-3-kinase (PI3K) and protein kinase C, which augmented ICAPS in nociceptive neurons. The S1P1 receptor agonist SEW2871 resulted in activation of the same signaling pathway and potentiation of ICAPS. Furthermore, the mitogen-activated protein kinase p38 was phosphorylated after S1P stimulation and inhibition of p38 signaling by SB203580 prevented the S1P-induced ICAPS potentiation. The current data suggest that S1P sensitized ICAPS through G-protein coupled S1P1 receptor activation of Gαi-PI3K-PKC-p38 signaling pathway in sensory neurons.
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Affiliation(s)
- Michiel Langeslag
- />Division Physiology, DPMP, Medical University Innsbruck, Fritz-Pregl-Str. 3-I, 6020 Innsbruck, Austria
| | - Serena Quarta
- />Division Physiology, DPMP, Medical University Innsbruck, Fritz-Pregl-Str. 3-I, 6020 Innsbruck, Austria
| | - Michael G Leitner
- />Department of Neurophysiology, Institute for Physiology and Pathophysiology, Philipps University of Marburg, Marburg, Germany
| | - Michaela Kress
- />Division Physiology, DPMP, Medical University Innsbruck, Fritz-Pregl-Str. 3-I, 6020 Innsbruck, Austria
| | - Norbert Mair
- />Division Physiology, DPMP, Medical University Innsbruck, Fritz-Pregl-Str. 3-I, 6020 Innsbruck, Austria
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Deletion of interleukin-6 signal transducer gp130 in small sensory neurons attenuates mechanonociception and down-regulates TRPA1 expression. J Neurosci 2014; 34:9845-56. [PMID: 25057188 DOI: 10.1523/jneurosci.5161-13.2014] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Glycoprotein 130 (gp130) is the signal transducing receptor subunit for cytokines of the interleukin-6 (IL-6) family, and it is expressed in a multitude of cell types of the immune and nervous system. IL-6-like cytokines are not only key regulators of innate immunity and inflammation but are also essential factors for the differentiation and development of the somatosensory system. Mice with a null mutation of gp130 in primary nociceptive afferents (SNS-gp130(-/-)) are largely protected from hypersensitivity to mechanical stimuli in mouse models of pathological pain. Therefore, we set out to investigate how neuronal gp130 regulates mechanonociception. SNS-gp130(-/-) mice revealed reduced mechanosensitivity to high mechanical forces in the von Frey assay in vivo, and this was associated with a reduced sensitivity of nociceptive primary afferents in vitro. Together with these findings, transient receptor potential ankyrin 1 (TRPA1) mRNA expression was significantly reduced in DRG from SNS-gp130(-/-) mice. This was also reflected by a reduced number of neurons responding with calcium transients to TRPA1 agonists in primary DRG cultures. Downregulation of Trpa1 expression was predominantly discovered in nonpeptidergic neurons, with the deficit becoming evident during stages of early postnatal development. Regulation of Trpa1 mRNA expression levels downstream of gp130 involved the classical Janus kinase family-signal transducer and activator of transcription pathway. Our results closely link proinflammatory cytokines to the expression of TRPA1, both of which have been shown to contribute to hypersensitive pain states. We suggest that gp130 has an essential role in mechanonociception and in the regulation of TRPA1 expression.
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Epigenetic modification of spinal miR-219 expression regulates chronic inflammation pain by targeting CaMKIIγ. J Neurosci 2014; 34:9476-83. [PMID: 25031391 DOI: 10.1523/jneurosci.5346-13.2014] [Citation(s) in RCA: 84] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Emerging evidence has shown that miRNA-mediated gene expression modulation contributes to chronic pain, but its functional regulatory mechanism remains unknown. Here, we found that complete Freund's adjuvant (CFA)-induced chronic inflammation pain significantly reduced miRNA-219 (miR-219) expression in mice spinal neurons. Furthermore, the expression of spinal CaMKIIγ, an experimentally validated target of miR-219, was increased in CFA mice. Overexpression of spinal miR-219 prevented and reversed thermal hyperalgesia and mechanical allodynia and spinal neuronal sensitization induced by CFA. Concurrently, increased expression of spinal CaMKIIγ was reversed by miR-219 overexpression. Downregulation of spinal miR-219 in naive mice induced pain-responsive behaviors and increased p-NMDAR1 expression, which could be inhibited by knockdown of CaMKIIγ. Bisulfite sequencing showed that CFA induced the hypermethylation of CpG islands in the miR-219 promoter. Treatment with demethylation agent 5'-aza-2'-deoxycytidine markedly attenuated pain behavior and spinal neuronal sensitization, which was accompanied with the increase of spinal miR-219 and decrease of CaMKIIγ expression. Together, we conclude that methylation-mediated epigenetic modification of spinal miR-219 expression regulates chronic inflammatory pain by targeting CaMKIIγ.
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