1
|
Yoo CH, Rani N, Shen S, Loggia ML, Gaynor K, Moore KE, Bagdasarian FA, Lin YS, Edwards RR, Price JC, Hooker JM, Wey HY. Investigating neuroepigenetic alterations in chronic low back pain with positron emission tomography. Pain 2024:00006396-990000000-00607. [PMID: 38776171 DOI: 10.1097/j.pain.0000000000003272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Accepted: 04/10/2024] [Indexed: 05/24/2024]
Abstract
ABSTRACT Epigenetics has gained considerable interest as potential mediators of molecular alterations that could underlie the prolonged sensitization of nociceptors, neurons, and glia in response to various environmental stimuli. Histone acetylation and deacetylation, key processes in modulating chromatin, influence gene expression; elevated histone acetylation enhances transcriptional activity, whereas decreased acetylation leads to DNA condensation and gene repression. Altered levels of histone deacetylase (HDAC) have been detected in various animal pain models, and HDAC inhibitors have demonstrated analgesic effects in these models, indicating HDACs' involvement in chronic pain pathways. However, animal studies have predominantly examined epigenetic modulation within the spinal cord after pain induction, which may not fully reflect the complexity of chronic pain in humans. Moreover, methodological limitations have previously impeded an in-depth study of epigenetic changes in the human brain. In this study, we employed [11C]Martinostat, an HDAC-selective radiotracer, positron emission tomography to assess HDAC availability in the brains of 23 patients with chronic low back pain (cLBP) and 11 age-matched and sex-matched controls. Our data revealed a significant reduction of [11C]Martinostat binding in several brain regions associated with pain processing in patients with cLBP relative to controls, highlighting the promising potential of targeting HDAC modulation as a therapeutic strategy for cLBP.
Collapse
Affiliation(s)
- Chi-Hyeon Yoo
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Nisha Rani
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Shiqian Shen
- Department of Anesthesiology, Critical Care and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Marco L Loggia
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
- Department of Anesthesiology, Critical Care and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Kate Gaynor
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Katelyn E Moore
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Frederick A Bagdasarian
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Yu-Shiuan Lin
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
- Centre for Chronobiology, University Psychiatric Clinics Basel, Basel, Switzerland
| | - Robert R Edwards
- Department of Anesthesia, Anesthesia and Pain Management Center, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, United States
| | - Julie C Price
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Jacob M Hooker
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Hsiao-Ying Wey
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| |
Collapse
|
2
|
Zhang D, Dong X, Li X, Yang Y, Li H, Hong Y, Yang G, Kong X, Wang X, Ma X. Moxibustion ameliorates chronic inflammatory visceral pain via spinal circRNA-miRNA-mRNA networks: a central mechanism study. Mol Brain 2024; 17:23. [PMID: 38750560 PMCID: PMC11097453 DOI: 10.1186/s13041-024-01093-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Accepted: 04/22/2024] [Indexed: 05/18/2024] Open
Abstract
This study aimed to unveil the central mechanism of moxibustion treating chronic inflammatory visceral pain (CIVP) from the angle of circRNA-miRNA-mRNA networks in the spinal cord. The rat CIVP model was established using a mixture of 5% (w/v) 2,4,6-trinitrobenzene sulfonic acid and 50% ethanol at a volume ratio of 2:1 via enema. Rats in the moxibustion group received herb-partitioned moxibustion at Tianshu (ST25, bilateral) and Qihai (CV6) points. The abdominal withdrawal reflex (AWR), mechanical withdrawal threshold (MWT), and thermal withdrawal latency (TWL) were adopted for pain behavior observation and pain sensitivity assessment. The circRNA, miRNA, and mRNA expression profiles were detected using the high-throughput sequencing technique. Relevant databases and bioinformatics analysis methods were used to screen for differentially expressed (DE) RNAs and build a circRNA-miRNA-mRNA (competing endogenous RNA) ceRNA regulatory network. The real-time quantitative PCR was employed to verify the sequencing result. CIVP rat models had a significantly higher AWR and lower TWL and MWT than normal rats. Between normal and model rats, there were 103 DE-circRNAs, 16 DE-miRNAs, and 397 DE-mRNAs in the spinal cord. Compared with the model group, the moxibustion group had a lower AWR and higher TWL and MWT; between these two groups, there were 118 DE-circRNAs, 15 DE-miRNAs, and 804 DE-mRNAs in the spinal cord. Two ceRNA networks were chosen to be verified. As a result, moxibustion's analgesic effect on visceral pain in CIVP rats may be associated with regulating the circRNA_02767/rno-miR-483-3p/Gfap network in the spinal cord and improving central sensitization.
Collapse
Affiliation(s)
- Dan Zhang
- Laboratory of Acupuncture-Moxibustion and Immunology, Shanghai Research Institute of Acupuncture and Meridian, Shanghai University of Traditional Chinese Medicine, Shanghai, 200030, China
| | - Xiaoqing Dong
- Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 200437, China
- Department of Acupuncture and Moxibustion, Xi'an Hospital of Encephalopathy, Shaanxi University of Chinese Medicine, Shaanxi, 710032, China
| | - Xiaoying Li
- Department of Acupuncture and Moxibustion, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 200071, China
| | - Yanting Yang
- Laboratory of Acupuncture-Moxibustion and Immunology, Shanghai Research Institute of Acupuncture and Meridian, Shanghai University of Traditional Chinese Medicine, Shanghai, 200030, China
| | - Hongna Li
- Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 200437, China
| | - Yue Hong
- Laboratory of Acupuncture-Moxibustion and Immunology, Shanghai Research Institute of Acupuncture and Meridian, Shanghai University of Traditional Chinese Medicine, Shanghai, 200030, China
| | - Guang Yang
- Laboratory of Acupuncture-Moxibustion and Immunology, Shanghai Research Institute of Acupuncture and Meridian, Shanghai University of Traditional Chinese Medicine, Shanghai, 200030, China
| | - Xiehe Kong
- Laboratory of Acupuncture-Moxibustion and Immunology, Shanghai Research Institute of Acupuncture and Meridian, Shanghai University of Traditional Chinese Medicine, Shanghai, 200030, China
| | - Xuejun Wang
- Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 200437, China.
- Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai, 200031, China.
| | - Xiaopeng Ma
- Laboratory of Acupuncture-Moxibustion and Immunology, Shanghai Research Institute of Acupuncture and Meridian, Shanghai University of Traditional Chinese Medicine, Shanghai, 200030, China.
- Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 200437, China.
| |
Collapse
|
3
|
Westlund KN, Montera M, Goins AE, Shilling MW, Afaghpour-Becklund M, Alles SR, Hui SE. Epigenetic HDAC5 Inhibitor Reverses Craniofacial Neuropathic Pain in Mice. THE JOURNAL OF PAIN 2024; 25:428-450. [PMID: 37777035 PMCID: PMC10842645 DOI: 10.1016/j.jpain.2023.09.015] [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: 03/22/2023] [Revised: 09/13/2023] [Accepted: 09/21/2023] [Indexed: 10/02/2023]
Abstract
Identifying and resolving molecular complexities underlying chronic neuropathic pain is a significant challenge. Among the numerous classes of histone deacetylases, Class I (HDAC 1-3) and Class III (sirtuins) have been best studied in experimental pain models where inhibitor pre-treatments but not post-treatments abrogate the development of pain-related behaviors. Post-treatment here in week 3 with less well-studied Class IIa HDAC4/5 selective inhibitor LMK235 diminishes the trigeminal ganglia increases of HDAC5 RNA and protein in two chronic orofacial neuropathic pain models to levels measured in naïve mice at week 10 post-model induction. HDAC4 RNA reported in lower limb inflammatory pain models is not evident in the trigeminal models. Many other gene alterations persisting at week 10 in the trigeminal ganglia (TG) are restored to naïve levels in mice treated with LMK235. Important pain-related upregulated genes Hoxc8,b9,d8; P2rx4, Cckbr, growth hormone (Gh), and schlafen (Slfn4) are greatly reduced in LMK235-treated mice. Fold increase in axon regeneration/repair genes Sostdc1, TTr, and Folr1 after injury are doubled by LMK235 treatment. LMK235 reduces the excitability of trigeminal ganglia neurons in culture isolated from nerve injured mice compared to vehicle-treated controls, with no effect on neurons from naïve mice. Electrophysiological characterization profile includes a shift where ∼20% of the small neurons recorded under LMK235-treated conditions are high threshold, whereas none of the neurons under control conditions have high thresholds. LMK235 reverses long-standing mechanical and cold hypersensitivity in chronic trigeminal neuropathic pain models in males and females (5,10 mg/kg), preventing development of anxiety- and depression-like behaviors. PERSPECTIVE: Data here support HDAC5 as key epigenetic factor in chronic trigeminal neuropathic pain persistence, validated with the study of RNA alterations, TG neuronal excitability, and pain-related behaviors. HDAC5 inhibitor given in week 3 restores RNA balance at 10 weeks, while upregulation remains for response to wound healing and chronic inflammation RNAs.
Collapse
Affiliation(s)
- Karin N. Westlund
- Department of Anesthesiology & Critical Care Medicine, University of New Mexico Health Sciences Center, Albuquerque, New Mexico 87131
| | - Marena Montera
- Department of Anesthesiology & Critical Care Medicine, University of New Mexico Health Sciences Center, Albuquerque, New Mexico 87131
| | - Aleyah E. Goins
- Department of Anesthesiology & Critical Care Medicine, University of New Mexico Health Sciences Center, Albuquerque, New Mexico 87131
| | - Mark W. Shilling
- Department of Anesthesiology & Critical Care Medicine, University of New Mexico Health Sciences Center, Albuquerque, New Mexico 87131
| | - Mitra Afaghpour-Becklund
- Department of Anesthesiology & Critical Care Medicine, University of New Mexico Health Sciences Center, Albuquerque, New Mexico 87131
| | - Sascha R.A. Alles
- Department of Anesthesiology & Critical Care Medicine, University of New Mexico Health Sciences Center, Albuquerque, New Mexico 87131
| | - S. Elise Hui
- Department of Anesthesiology & Critical Care Medicine, University of New Mexico Health Sciences Center, Albuquerque, New Mexico 87131
| |
Collapse
|
4
|
Bai P, Liu Y, Yang L, Ding W, Mondal P, Sang N, Liu G, Lu X, Ho TT, Zhou Y, Wu R, Birar VC, Wilks MQ, Tanzi RE, Lin H, Zhang C, Li W, Shen S, Wang C. Development and Pharmacochemical Characterization Discover a Novel Brain-Permeable HDAC11-Selective Inhibitor with Therapeutic Potential by Regulating Neuroinflammation in Mice. J Med Chem 2023; 66:16075-16090. [PMID: 37972387 DOI: 10.1021/acs.jmedchem.3c01491] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
Recent studies have shown that the epigenetic protein histone deacetylase 11 (HDAC11) is highly expressed in the brain and critically modulates neuroimmune functions, making it a potential therapeutic target for neurological disorders. Herein, we report the development of PB94, which is a novel HDAC11 inhibitor. PB94 exhibited potency and selectivity against HDAC11 with IC50 = 108 nM and >40-fold selectivity over other HDAC isoforms. Pharmacokinetic/pharmacodynamic evaluation indicated that PB94 possesses promising drug-like properties. Additionally, PB94 was radiolabeled with carbon-11 as [11C]PB94 for positron emission tomography (PET), which revealed significant brain uptake and metabolic properties suitable for drug development in live animals. Furthermore, we demonstrated that neuropathic pain was associated with brain upregulation of HDAC11 and that pharmacological inhibition of HDAC11 by PB94 ameliorated neuropathic pain in a mouse model. Collectively, our findings support further development of PB94 as a selective HDAC11 inhibitor for neurological indications, including pain.
Collapse
Affiliation(s)
- Ping Bai
- Department of Respiratory and Critical Care Medicine, Targeted Tracer Research and Development Laboratory, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
- Institute of Respiratory Health, Targeted Tracer Research and Development Laboratory, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
- Precision Medicine Center, Precision Medicine Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
- The Research Units of West China, Chinese Academy of Medical Sciences, West China Hospital, Chengdu, Sichuan 610041, China
- State Key Laboratory of Respiratory Health and Multimorbidity, West China Hospital, Chengdu, Sichuan 610041, China
| | - Yan Liu
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts 02129, United States
| | - Liuyue Yang
- Department of Anesthesia, Critical Care and Pain Medicine Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts 02129, United States
| | - Weihua Ding
- Department of Anesthesia, Critical Care and Pain Medicine Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts 02129, United States
| | - Prasenjit Mondal
- Genetics and Aging Research Unit, McCance Center for Brain Health, MassGeneral Institute for Neurodegenerative Disease, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, 114 16th Street, Charlestown, Massachusetts 02129, United States
| | - Na Sang
- Department of Respiratory and Critical Care Medicine, Targeted Tracer Research and Development Laboratory, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
- Institute of Respiratory Health, Targeted Tracer Research and Development Laboratory, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
- Precision Medicine Center, Precision Medicine Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
- The Research Units of West China, Chinese Academy of Medical Sciences, West China Hospital, Chengdu, Sichuan 610041, China
- State Key Laboratory of Respiratory Health and Multimorbidity, West China Hospital, Chengdu, Sichuan 610041, China
| | - Gang Liu
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, People's Republic of China
| | - Xiaoxia Lu
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, People's Republic of China
| | - Thanh Tu Ho
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Yanting Zhou
- Department of Respiratory and Critical Care Medicine, Targeted Tracer Research and Development Laboratory, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
- Institute of Respiratory Health, Targeted Tracer Research and Development Laboratory, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
- Precision Medicine Center, Precision Medicine Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
- The Research Units of West China, Chinese Academy of Medical Sciences, West China Hospital, Chengdu, Sichuan 610041, China
- State Key Laboratory of Respiratory Health and Multimorbidity, West China Hospital, Chengdu, Sichuan 610041, China
| | - Rui Wu
- Department of Respiratory and Critical Care Medicine, Targeted Tracer Research and Development Laboratory, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
- Institute of Respiratory Health, Targeted Tracer Research and Development Laboratory, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
- Precision Medicine Center, Precision Medicine Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
- The Research Units of West China, Chinese Academy of Medical Sciences, West China Hospital, Chengdu, Sichuan 610041, China
- State Key Laboratory of Respiratory Health and Multimorbidity, West China Hospital, Chengdu, Sichuan 610041, China
| | - Vishal C Birar
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts 02129, United States
| | - Moses Q Wilks
- Gordon Center for Medical Imaging, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts 02129, United States
| | - Rudolph E Tanzi
- Genetics and Aging Research Unit, McCance Center for Brain Health, MassGeneral Institute for Neurodegenerative Disease, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, 114 16th Street, Charlestown, Massachusetts 02129, United States
| | - Hening Lin
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
- Howard Hughes Medical Institute; Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Can Zhang
- Genetics and Aging Research Unit, McCance Center for Brain Health, MassGeneral Institute for Neurodegenerative Disease, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, 114 16th Street, Charlestown, Massachusetts 02129, United States
| | - Weimin Li
- Department of Respiratory and Critical Care Medicine, Targeted Tracer Research and Development Laboratory, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
- Institute of Respiratory Health, Targeted Tracer Research and Development Laboratory, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
- Precision Medicine Center, Precision Medicine Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
- The Research Units of West China, Chinese Academy of Medical Sciences, West China Hospital, Chengdu, Sichuan 610041, China
- State Key Laboratory of Respiratory Health and Multimorbidity, West China Hospital, Chengdu, Sichuan 610041, China
| | - Shiqian Shen
- Department of Anesthesia, Critical Care and Pain Medicine Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts 02129, United States
| | - Changning Wang
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts 02129, United States
| |
Collapse
|
5
|
Jiang W, Zhang LX, Tan XY, Yu P, Dong M. Inflammation and histone modification in chronic pain. Front Immunol 2023; 13:1087648. [PMID: 36713369 PMCID: PMC9880030 DOI: 10.3389/fimmu.2022.1087648] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Accepted: 12/29/2022] [Indexed: 01/15/2023] Open
Abstract
Increasing evidence suggests that epigenetic mechanisms have great potential in the field of pain. The changes and roles of epigenetics of the spinal cord and dorsal root ganglia in the chronic pain process may provide broad insights for future pain management. Pro-inflammatory cytokines and chemokines released by microglia and astrocytes, as well as blood-derived macrophages, play critical roles in inducing and maintaining chronic pain, while histone modifications may play an important role in inflammatory metabolism. This review provides an overview of neuroinflammation and chronic pain, and we systematically discuss the regulation of neuroinflammation and histone modifications in the context of chronic pain. Specifically, we analyzed the role of epigenetics in alleviating or exacerbating chronic pain by modulating microglia, astrocytes, and the proinflammatory mediators they release. This review aimed to contribute to the discovery of new therapeutic targets for chronic pain.
Collapse
Affiliation(s)
- Wei Jiang
- Department of Neurology and Neuroscience Center, The First Hospital of Jilin University, Changchun, China
| | - Li-Xi Zhang
- Department of Thyroid Surgery, The First Hospital of Jilin University, Changchun, China
| | - Xuan-Yu Tan
- Department of Neurosurgery, The First Hospital of Jilin University, Changchun, China
| | - Peng Yu
- Department of Ophthalmology, The Second Hospital of Jilin University, Changchun, China,*Correspondence: Peng Yu, ; Ming Dong,
| | - Ming Dong
- Department of Neurology and Neuroscience Center, The First Hospital of Jilin University, Changchun, China,*Correspondence: Peng Yu, ; Ming Dong,
| |
Collapse
|
6
|
Zhao B, Fu J, Ni H, Xu L, Xu C, He Q, Ni C, Wang Y, Kuang J, Tang M, Shou Q, Yao M. Catalpol ameliorates CFA-induced inflammatory pain by targeting spinal cord and peripheral inflammation. Front Pharmacol 2022; 13:1010483. [PMID: 36353492 PMCID: PMC9637921 DOI: 10.3389/fphar.2022.1010483] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 10/11/2022] [Indexed: 10/24/2023] Open
Abstract
Chronic, inflammatory pain is an international health concern that severely diminishes individuals' quality of life. Catalpol is an iridoid glycoside derived from the roots of Rehmannia glutinosa that possesses anti-inflammatory, antioxidant, and neuroprotective properties for the treating multiple kinds of disorders. Nevertheless, catalpol's impacts on inflammatory pain and its potential methods of action are still unclear. The purpose of this investigation is to determine the mechanism of catalpol to reduce the inflammatory pain behaviors in a rat model with complete Freund's adjuvant (CFA). Catwalk, Von-Frey, and open field testing were performed for behavioral assessment. Western blot analysis and real-time quantitative PCR (RT-PCR) were employed to identify variations in molecular expression, while immunofluorescence was utilized to identify cellular localization. Catalpol effectively reduced CFA-induced mechanical allodynia and thermal hyperalgesia when injected intrathecally. Moreover, catalpol can regulate the HDAC4/PPAR-γ-signaling pathway in CFA rat spinal cord neurons. Meanwhile catalpol significantly decreased the expression of the NF-κB/NLRP3 inflammatory axis in the spinal cord of CFA rats. In addition, both in vivo and in vitro research revealed that catalpol treatment inhibited astrocyte activation and increase inflammatory factor expression. Interestingly, we also found that catalpol could alleviate peripheral pain by inhibiting tissue inflammation. Taken together, the findings declared that catalpol may inhibit inflammatory pain in CFA rats by targeting spinal cord and peripheral inflammation.
Collapse
Affiliation(s)
- Baoxia Zhao
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, China
- Department of Anesthesiology and Pain Research Center, The First Hospital of Jiaxing Or The Affiliated Hospital of Jiaxing University, Jiaxing, China
| | - Jie Fu
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, China
- Department of Anesthesiology and Pain Research Center, The First Hospital of Jiaxing Or The Affiliated Hospital of Jiaxing University, Jiaxing, China
| | - Huadong Ni
- Department of Anesthesiology and Pain Research Center, The First Hospital of Jiaxing Or The Affiliated Hospital of Jiaxing University, Jiaxing, China
| | - Longsheng Xu
- Department of Anesthesiology and Pain Research Center, The First Hospital of Jiaxing Or The Affiliated Hospital of Jiaxing University, Jiaxing, China
| | - Chengfei Xu
- Department of Anesthesiology and Pain Research Center, The First Hospital of Jiaxing Or The Affiliated Hospital of Jiaxing University, Jiaxing, China
| | - Qiuli He
- Department of Anesthesiology and Pain Research Center, The First Hospital of Jiaxing Or The Affiliated Hospital of Jiaxing University, Jiaxing, China
| | - Chaobo Ni
- Department of Anesthesiology and Pain Research Center, The First Hospital of Jiaxing Or The Affiliated Hospital of Jiaxing University, Jiaxing, China
| | - Yahui Wang
- Department of Anesthesiology and Pain Research Center, The First Hospital of Jiaxing Or The Affiliated Hospital of Jiaxing University, Jiaxing, China
| | - Jiao Kuang
- Department of Anesthesiology and Pain Research Center, The First Hospital of Jiaxing Or The Affiliated Hospital of Jiaxing University, Jiaxing, China
| | - Mengjie Tang
- Department of Anesthesiology and Pain Research Center, The First Hospital of Jiaxing Or The Affiliated Hospital of Jiaxing University, Jiaxing, China
| | - Qiyang Shou
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, China
| | - Ming Yao
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, China
- Department of Anesthesiology and Pain Research Center, The First Hospital of Jiaxing Or The Affiliated Hospital of Jiaxing University, Jiaxing, China
| |
Collapse
|
7
|
Xu T, Liu CC, Xin WJ. The Epigenetic Mechanisms Involved in Chronic Pain in Rodents: A Mini- Review. Curr Neuropharmacol 2022; 20:1011-1021. [PMID: 34561983 PMCID: PMC9886825 DOI: 10.2174/1570159x19666210924104757] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 08/20/2021] [Accepted: 09/17/2021] [Indexed: 11/22/2022] Open
Abstract
Chronic pain is a common distressing neurological disorder and about 30% of the global population suffers from it. In addition to being highly prevalent, chronic pain causes a heavy economic and social burden. Although substantial progress has been achieved to dissect the underlying mechanism of chronic pain in the past few decades, the incidence and treatment of this neurological illness is yet not properly managed in clinical practice. While nerve injury-, chemotherapy- or inflammation-induced functional regulation of gene expression in the dorsal root ganglion and spinal cord are extensively reported to be involved in the pathogenic process of chronic pain, the specific mechanism of these altered transcriptional profile still remains unclear. Recent studies have shown that epigenetic mechanisms, including DNA/RNA methylation, histone modification and circular RNAs regulation, are involved in the occurrence and development of chronic pain. In this review, we provide a description of research on the role of epigenetic mechanism in chronic pain, summarize the latest clinical and preclinical advance in this field, and propose the potential directions for further research to elucidate the molecular mechanism underlying the pathogenesis of chronic pain.
Collapse
Affiliation(s)
- Ting Xu
- Guangdong Province Key Laboratory of Brain Function and Disease, Department of Physiology, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou 510080, China; ,These authors contributed equally.
| | - Cui-Cui Liu
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Department of Rehabilitation Medicine, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou 510120, China,These authors contributed equally.
| | - Wen-Jun Xin
- Guangdong Province Key Laboratory of Brain Function and Disease, Department of Physiology, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou 510080, China; ,Address correspondence to this author at the Guangdong Province Key Laboratory of Brain Function and Disease, Department of Physiology, Zhongshan School of Medicine, Sun Yat-Sen University, 74 Zhongshan Rd. 2, Guangzhou, China; E-mail:
| |
Collapse
|
8
|
Dourson AJ, Willits A, Raut NG, Kader L, Young E, Jankowski MP, Chidambaran V. Genetic and epigenetic mechanisms influencing acute to chronic postsurgical pain transitions in pediatrics: Preclinical to clinical evidence. Can J Pain 2022; 6:85-107. [PMID: 35572362 PMCID: PMC9103644 DOI: 10.1080/24740527.2021.2021799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2021] [Revised: 11/30/2021] [Accepted: 12/20/2021] [Indexed: 12/02/2022]
Abstract
Background Chronic postsurgical pain (CPSP) in children remains an important problem with no effective preventive or therapeutic strategies. Recently, genomic underpinnings explaining additional interindividual risk beyond psychological factors have been proposed. Aims We present a comprehensive review of current preclinical and clinical evidence for genetic and epigenetic mechanisms relevant to pediatric CPSP. Methods Narrative review. Results Animal models are relevant to translational research for unraveling genomic mechanisms. For example, Cacng2, p2rx7, and bdnf mutant mice show altered mechanical hypersensitivity to injury, and variants of the same genes have been associated with CPSP susceptibility in humans; similarly, differential DNA methylation (H1SP) and miRNAs (miR-96/7a) have shown translational implications. Animal studies also suggest that crosstalk between neurons and immune cells may be involved in nociceptive priming observed in neonates. In children, differential DNA methylation in regulatory genomic regions enriching GABAergic, dopaminergic, and immune pathways, as well as polygenic risk scores for enhanced prediction of CPSP, have been described. Genome-wide studies in pediatric CPSP are scarce, but pathways identified by adult gene association studies point to potential common mechanisms. Conclusions Bench-to-bedside genomics research in pediatric CPSP is currently limited. Reverse translational approaches, use of other -omics, and inclusion of pediatric/CPSP endophenotypes in large-scale biobanks may be potential solutions. Time of developmental vulnerability and longitudinal genomic changes after surgery warrant further investigation. Emergence of promising precision pain management strategies based on gene editing and epigenetic programing emphasize need for further research in pediatric CPSP-related genomics.
Collapse
Affiliation(s)
- Adam J. Dourson
- Department of Anesthesia, Division of Pain Management, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio,USA
| | - Adam Willits
- Neuroscience Graduate Program, University of Kansas Medical Center, Kansas City, Kansas, USA
- Department of Anatomy and Cell Biology, University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Namrata G.R. Raut
- Department of Anesthesia, Division of Pain Management, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio,USA
| | - Leena Kader
- Neuroscience Graduate Program, University of Kansas Medical Center, Kansas City, Kansas, USA
- Department of Anatomy and Cell Biology, University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Erin Young
- Neuroscience Graduate Program, University of Kansas Medical Center, Kansas City, Kansas, USA
- Department of Anesthesiology, University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Michael P. Jankowski
- Department of Anesthesia, Division of Pain Management, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio,USA
- Department of Pediatrics, University of Cincinnati, College of Medicine, Cincinnati, Ohio, USA
| | - Vidya Chidambaran
- Department of Anesthesia, Division of Pain Management, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio,USA
| |
Collapse
|
9
|
Beierle JA, Yao EJ, Goldstein SI, Scotellaro JL, Sena KD, Linnertz CA, Willits AB, Kader L, Young EE, Peltz G, Emili A, Ferris MT, Bryant CD. Genetic basis of thermal nociceptive sensitivity and brain weight in a BALB/c reduced complexity cross. Mol Pain 2022; 18:17448069221079540. [PMID: 35088629 PMCID: PMC8891926 DOI: 10.1177/17448069221079540] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 01/20/2022] [Indexed: 11/30/2022] Open
Abstract
Thermal nociception involves the transmission of temperature-related noxious information from the periphery to the CNS and is a heritable trait that could predict transition to persistent pain. Rodent forward genetics complement human studies by controlling genetic complexity and environmental factors, analysis of end point tissue, and validation of variants on appropriate genetic backgrounds. Reduced complexity crosses between nearly identical inbred substrains with robust trait differences can greatly facilitate unbiased discovery of novel genes and variants. We found BALB/cByJ mice showed enhanced sensitivity on the 53.5°C hot plate and mechanical stimulation in the von Frey test compared to BALB/cJ mice and replicated decreased gross brain weight in BALB/cByJ versus BALB/cJ. We then identified a quantitative trait locus (QTL) on chromosome 13 for hot plate sensitivity (LOD = 10.7; p < 0.001; peak = 56 Mb) and a QTL for brain weight on chromosome 5 (LOD = 8.7; p < 0.001). Expression QTL mapping of brain tissues identified H2afy (56.07 Mb) as the top transcript with the strongest association at the hot plate locus (FDR = 0.0002) and spliceome analysis identified differential exon usage within H2afy associated with the same locus. Whole brain proteomics further supported decreased H2AFY expression could underlie enhanced hot plate sensitivity, and identified ACADS as a candidate for reduced brain weight. To summarize, a BALB/c reduced complexity cross combined with multiple-omics approaches facilitated identification of candidate genes underlying thermal nociception and brain weight. These substrains provide a powerful, reciprocal platform for future validation of candidate variants.
Collapse
Affiliation(s)
- Jacob A Beierle
- Program in Biomolecular Pharmacology, Boston University School of Medicine, Boston, MA, USA
- Laboratory of Addiction Genetics, Department of Pharmacology and Experimental Therapeutics and Psychiatry, Boston University School of Medicine, Boston, MA, USA
| | - Emily J Yao
- Laboratory of Addiction Genetics, Department of Pharmacology and Experimental Therapeutics and Psychiatry, Boston University School of Medicine, Boston, MA, USA
| | - Stanley I Goldstein
- Program in Biomolecular Pharmacology, Boston University School of Medicine, Boston, MA, USA
- Department of Biology and Biochemistry, Center for Network Systems Biology, Boston University School of Medicine, Boston, MA, USA
| | - Julia L Scotellaro
- Department of Biology and Biochemistry, Center for Network Systems Biology, Boston University School of Medicine, Boston, MA, USA
- Undergraduate Research Opportunity Program, Boston University, Boston, MA, USA
| | - Katherine D Sena
- Department of Biology and Biochemistry, Center for Network Systems Biology, Boston University School of Medicine, Boston, MA, USA
- Undergraduate Research Opportunity Program, Boston University, Boston, MA, USA
| | - Colton A Linnertz
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Adam B Willits
- Neuroscience Program, University of Kansas Medical Center, Kansas City, KS, USA
| | - Leena Kader
- Neuroscience Program, University of Kansas Medical Center, Kansas City, KS, USA
| | - Erin E Young
- Department of Anesthesiology, University of Kansas Medical Center, Kansas City, KS, USA
| | - Gary Peltz
- Department of Anesthesiology, Pain, and Preoperative Medicine, Stanford University School of Medicine, Stanford, CA, USA
| | - Andrew Emili
- Department of Biology and Biochemistry, Center for Network Systems Biology, Boston University School of Medicine, Boston, MA, USA
| | - Martin T Ferris
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Camron D Bryant
- Laboratory of Addiction Genetics, Department of Pharmacology and Experimental Therapeutics and Psychiatry, Boston University School of Medicine, Boston, MA, USA
| |
Collapse
|
10
|
Chadwick A, Frazier A, Khan TW, Young E. Understanding the Psychological, Physiological, and Genetic Factors Affecting Precision Pain Medicine: A Narrative Review. J Pain Res 2021; 14:3145-3161. [PMID: 34675643 PMCID: PMC8517910 DOI: 10.2147/jpr.s320863] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Accepted: 08/11/2021] [Indexed: 12/11/2022] Open
Abstract
PURPOSE Precision pain medicine focuses on employing methods to assess each patient individually, identify their risk profile for disproportionate pain and/or the development of chronic pain, and optimize therapeutic strategies to target specific pathological processes underlying chronic pain. This review aims to provide a concise summary of the current body of knowledge regarding psychological, physiological, and genetic determinants of chronic pain related to precision pain medicine. METHODS Following the Scale for the Assessment of Narrative Review Articles (SANRA) criteria, we employed PubMed/Medline to identify relevant articles using primary database search terms to query articles such as: precision medicine, non-modifiable factors, pain, anesthesiology, quantitative sensory testing, genetics, pain medicine, and psychological. RESULTS Precision pain medicine provides an opportunity to identify populations at risk, develop personalized treatment strategies, and reduce side effects and cost through elimination of ineffective treatment strategies. As in other complex chronic health conditions, there are two broad categories that contribute to chronic pain risk: modifiable and non-modifiable patient factors. This review focuses on three primary determinants of health, representing both modifiable and non-modifiable factors, that may contribute to a patient's profile for risk of developing pain and most effective management strategies: psychological, physiological, and genetic factors. CONCLUSION Consideration of these three domains is already being integrated into patient care in other specialties, but by understanding the role they play in development and maintenance of chronic pain, we can begin to implement both precision and personalized treatment regimens.
Collapse
Affiliation(s)
- Andrea Chadwick
- Department of Anesthesiology, University of Kansas Medical Center, Kansas City, KS, USA
| | - Andrew Frazier
- Department of Anesthesiology, University of Kansas Medical Center, Kansas City, KS, USA
| | - Talal W Khan
- Department of Anesthesiology, University of Kansas Medical Center, Kansas City, KS, USA
| | - Erin Young
- Department of Anesthesiology, University of Kansas Medical Center, Kansas City, KS, USA
| |
Collapse
|
11
|
Inhibiting endocytosis in CGRP + nociceptors attenuates inflammatory pain-like behavior. Nat Commun 2021; 12:5812. [PMID: 34608164 PMCID: PMC8490418 DOI: 10.1038/s41467-021-26100-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Accepted: 09/06/2021] [Indexed: 12/20/2022] Open
Abstract
The advantage of locally applied anesthetics is that they are not associated with the many adverse effects, including addiction liability, of systemically administered analgesics. This therapeutic approach has two inherent pitfalls: specificity and a short duration of action. Here, we identified nociceptor endocytosis as a promising target for local, specific, and long-lasting treatment of inflammatory pain. We observed preferential expression of AP2α2, an α-subunit isoform of the AP2 complex, within CGRP+/IB4- nociceptors in rodents and in CGRP+ dorsal root ganglion neurons from a human donor. We utilized genetic and pharmacological approaches to inhibit nociceptor endocytosis demonstrating its role in the development and maintenance of acute and chronic inflammatory pain. One-time injection of an AP2 inhibitor peptide significantly reduced acute and chronic pain-like behaviors and provided prolonged analgesia. We evidenced sexually dimorphic recovery responses to this pharmacological approach highlighting the importance of sex differences in pain development and response to analgesics. The authors show the endocytotic adaptor subunit called AP2A2 is differentially expressed in CGRP+ nociceptors. Locally inhibiting nociceptor endocytosis with a lipidated AP2 inhibitor peptide reduces acute and chronic pain-like behaviour in mice and rats, indicating prolonged analgesia.
Collapse
|
12
|
Torres-Perez JV, Irfan J, Febrianto MR, Di Giovanni S, Nagy I. Histone post-translational modifications as potential therapeutic targets for pain management. Trends Pharmacol Sci 2021; 42:897-911. [PMID: 34565578 DOI: 10.1016/j.tips.2021.08.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 08/17/2021] [Accepted: 08/18/2021] [Indexed: 11/26/2022]
Abstract
Effective pharmacological management of pain associated with tissue pathology is an unmet medical need. Transcriptional modifications in nociceptive pathways are pivotal for the development and the maintenance of pain associated with tissue damage. Accumulating evidence has shown the importance of the epigenetic control of transcription in nociceptive pathways via histone post-translational modifications (PTMs). Hence, histone PTMs could be targets for novel effective analgesics. Here, we discuss the current understanding of histone PTMs in the modulation of gene expression affecting nociception and pain phenotypes following tissue injury. We also provide a critical view of the translational implications of preclinical models and discuss opportunities and challenges of targeting histone PTMs to relieve pain in clinically relevant tissue injuries.
Collapse
Affiliation(s)
- Jose V Torres-Perez
- UK Dementia Research Institute at Imperial College London and Department of Brain Sciences, Imperial College London, 86 Wood Lane, London W12 0BZ, UK.
| | - Jahanzaib Irfan
- Nociception Group, Division of Anaesthesia, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Imperial College London, Chelsea and Westminster Hospital Campus, 369 Fulham Road, London SW10 9FJ, UK
| | - Muhammad Rizki Febrianto
- Nociception Group, Division of Anaesthesia, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Imperial College London, Chelsea and Westminster Hospital Campus, 369 Fulham Road, London SW10 9FJ, UK
| | - Simone Di Giovanni
- Division of Neuroscience, Department of Brain Sciences, Imperial College London, E505, Burlington Danes, Du Cane Road, London W12 ONN, UK.
| | - Istvan Nagy
- Nociception Group, Division of Anaesthesia, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Imperial College London, Chelsea and Westminster Hospital Campus, 369 Fulham Road, London SW10 9FJ, UK.
| |
Collapse
|
13
|
Eller OC, Glidden N, Knight B, McKearney N, Perry M, Bernier Carney KM, Starkweather A, Young EE, Baumbauer KM. A Role for Global DNA Methylation Level and IL2 Expression in the Transition From Acute to Chronic Low Back Pain. FRONTIERS IN PAIN RESEARCH 2021; 2:744148. [PMID: 35295525 PMCID: PMC8915771 DOI: 10.3389/fpain.2021.744148] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Accepted: 08/30/2021] [Indexed: 11/13/2022] Open
Abstract
Objectives: The transition from acute low back pain (aLBP) to chronic LBP (cLBP) results from a variety of factors, including epigenetic modifications of DNA. The aim of this study was to (1) compare global DNA (gDNA) methylation and histone acetylation at LBP onset between the aLBP and cLBP participants, (2) compare mRNA expression of genes with known roles in the transduction, maintenance, and/or modulation of pain between the aLBP and cLBP participants, (3) compare somatosensory function and pain ratings in our participants, and (4) determine if the aforementioned measurements were associated.Methods: A total of 220 participants were recruited for this prospective observational study following recent onset of an episode of LBP. We retained 45 individuals whose gDNA was of sufficient quality for analysis. The final sample included 14 participants whose pain resolved within 6 weeks of onset (aLBP),15 participants that reported pain for 6 months (cLBP), and 16 healthy controls. Participants were subjected to quantitative sensory testing (QST), blood was drawn via venipuncture, gDNA isolated, and global DNA methylation and histone acetylation, as well as mRNA expression of 84 candidate genes, were measured.Results: Individuals that develop cLBP display multimodal somatosensory hypersensitivity relative to aLBP participants. cLBP participants also had significantly lower global DNA methylation, which was negatively correlated with interleukin-2 (IL2) mRNA expression.Discussion: cLBP is characterized by somatosensory hypersensitivity, lower global DNA methylation, and higher IL2 expression level compared to those whose pain will resolve quickly (aLBP). These results suggest potential diagnostic and therapeutic relevance for global DNA methylation and IL2 expression in the pathology underlying the transition from acute to chronic LBP.
Collapse
Affiliation(s)
- Olivia C. Eller
- Department of Anatomy and Cell Biology, University of Kansas Medical Center, Kansas City, KS, United States
| | - Nicole Glidden
- Department of Genetics and Genome Sciences, UConn Health, Farmington, CT, United States
- Center for Advancement in Managing Pain, School of Nursing, University of Connecticut, Storrs, CT, United States
| | - Brittany Knight
- Department of Neuroscience, UConn Health, Farmington, CT, United States
| | - Noelle McKearney
- Department of Genetics and Genome Sciences, UConn Health, Farmington, CT, United States
- Department of Neuroscience, UConn Health, Farmington, CT, United States
| | - Mallory Perry
- Center for Advancement in Managing Pain, School of Nursing, University of Connecticut, Storrs, CT, United States
| | - Katherine M. Bernier Carney
- Center for Advancement in Managing Pain, School of Nursing, University of Connecticut, Storrs, CT, United States
| | - Angela Starkweather
- Center for Advancement in Managing Pain, School of Nursing, University of Connecticut, Storrs, CT, United States
| | - Erin E. Young
- Department of Anatomy and Cell Biology, University of Kansas Medical Center, Kansas City, KS, United States
- Department of Genetics and Genome Sciences, UConn Health, Farmington, CT, United States
- Center for Advancement in Managing Pain, School of Nursing, University of Connecticut, Storrs, CT, United States
- Department of Neuroscience, UConn Health, Farmington, CT, United States
- Department of Anesthesiology, University of Kansas Medical Center, Kansas City, KS, United States
- *Correspondence: Erin E. Young
| | - Kyle M. Baumbauer
- Department of Anatomy and Cell Biology, University of Kansas Medical Center, Kansas City, KS, United States
- Center for Advancement in Managing Pain, School of Nursing, University of Connecticut, Storrs, CT, United States
- Department of Neuroscience, UConn Health, Farmington, CT, United States
- Department of Anesthesiology, University of Kansas Medical Center, Kansas City, KS, United States
| |
Collapse
|
14
|
Pereira V, Lamoine S, Cuménal M, Lolignier S, Aissouni Y, Pizzoccaro A, Prival L, Balayssac D, Eschalier A, Bourinet E, Busserolles J. Epigenetics Involvement in Oxaliplatin-Induced Potassium Channel Transcriptional Downregulation and Hypersensitivity. Mol Neurobiol 2021; 58:3575-3587. [PMID: 33772465 DOI: 10.1007/s12035-021-02361-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Accepted: 03/15/2021] [Indexed: 01/10/2023]
Abstract
Peripheral neuropathy is the most frequent dose-limiting adverse effect of oxaliplatin. Acute pain symptoms that are induced or exacerbated by cold occur in almost all patients immediately following the first infusions. Evidence has shown that oxaliplatin causes ion channel expression modulations in dorsal root ganglia neurons, which are thought to contribute to peripheral hypersensitivity. Most dysregulated genes encode ion channels involved in cold and mechanical perception, noteworthy members of a sub-group of potassium channels of the K2P family, TREK and TRAAK. Downregulation of these K2P channels has been identified as an important tuner of acute oxaliplatin-induced hypersensitivity. We investigated the molecular mechanisms underlying this peripheral dysregulation in a murine model of neuropathic pain triggered by a single oxaliplatin administration. We found that oxaliplatin-mediated TREK-TRAAK downregulation, as well as downregulation of other K+ channels of the K2P and Kv families, involves a transcription factor known as the neuron-restrictive silencer factor (NRSF) and its epigenetic co-repressors histone deacetylases (HDACs). NRSF knockdown was able to prevent most of these K+ channel mRNA downregulation in mice dorsal root ganglion neurons as well as oxaliplatin-induced acute cold and mechanical hypersensitivity. Interestingly, pharmacological inhibition of class I HDAC reproduces the antinociceptive effects of NRSF knockdown and leads to an increased K+ channel expression in oxaliplatin-treated mice.
Collapse
Affiliation(s)
- Vanessa Pereira
- Université Clermont Auvergne, Inserm UMR-U1107, Neuro-Dol, 28, pl. H.Dunant, F-63000, Clermont-Ferrand, France
- Institut Analgesia, Faculté de Médecine, BP38, F-63001, Clermont-Ferrand, France
| | - Sylvain Lamoine
- Université Clermont Auvergne, Inserm UMR-U1107, Neuro-Dol, 28, pl. H.Dunant, F-63000, Clermont-Ferrand, France
- Institut Analgesia, Faculté de Médecine, BP38, F-63001, Clermont-Ferrand, France
| | - Mélissa Cuménal
- Université Clermont Auvergne, Inserm UMR-U1107, Neuro-Dol, 28, pl. H.Dunant, F-63000, Clermont-Ferrand, France
- Institut Analgesia, Faculté de Médecine, BP38, F-63001, Clermont-Ferrand, France
| | - Stéphane Lolignier
- Université Clermont Auvergne, Inserm UMR-U1107, Neuro-Dol, 28, pl. H.Dunant, F-63000, Clermont-Ferrand, France
- Institut Analgesia, Faculté de Médecine, BP38, F-63001, Clermont-Ferrand, France
| | - Youssef Aissouni
- Université Clermont Auvergne, Inserm UMR-U1107, Neuro-Dol, 28, pl. H.Dunant, F-63000, Clermont-Ferrand, France
- Institut Analgesia, Faculté de Médecine, BP38, F-63001, Clermont-Ferrand, France
| | - Anne Pizzoccaro
- Institut de Génomique Fonctionnelle, Université de Montpellier, CNRS UMR-5203, INSERM U1091, F-34094, Montpellier, France
| | - Laetitia Prival
- Université Clermont Auvergne, Inserm UMR-U1107, Neuro-Dol, 28, pl. H.Dunant, F-63000, Clermont-Ferrand, France
- Institut Analgesia, Faculté de Médecine, BP38, F-63001, Clermont-Ferrand, France
| | - David Balayssac
- Université Clermont Auvergne, Inserm UMR-U1107, Neuro-Dol, 28, pl. H.Dunant, F-63000, Clermont-Ferrand, France
- Institut Analgesia, Faculté de Médecine, BP38, F-63001, Clermont-Ferrand, France
| | - Alain Eschalier
- Université Clermont Auvergne, Inserm UMR-U1107, Neuro-Dol, 28, pl. H.Dunant, F-63000, Clermont-Ferrand, France
- Institut Analgesia, Faculté de Médecine, BP38, F-63001, Clermont-Ferrand, France
| | - Emmanuel Bourinet
- Institut de Génomique Fonctionnelle, Université de Montpellier, CNRS UMR-5203, INSERM U1091, F-34094, Montpellier, France
| | - Jérôme Busserolles
- Université Clermont Auvergne, Inserm UMR-U1107, Neuro-Dol, 28, pl. H.Dunant, F-63000, Clermont-Ferrand, France.
- Institut Analgesia, Faculté de Médecine, BP38, F-63001, Clermont-Ferrand, France.
| |
Collapse
|
15
|
Wang L, Ahn YJ, Asmis R. Inhibition of myeloid HDAC2 upregulates glutaredoxin 1 expression, improves protein thiol redox state and protects against high-calorie diet-induced monocyte dysfunction and atherosclerosis. Atherosclerosis 2021; 328:23-32. [PMID: 34077868 DOI: 10.1016/j.atherosclerosis.2021.05.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 04/22/2021] [Accepted: 05/05/2021] [Indexed: 12/25/2022]
Abstract
BACKGROUND AND AIMS The thiol transferase glutaredoxin 1 controls redox signaling and cellular functions by regulating the S-glutathionylation status of critical protein thiols. Here we tested the hypothesis that by derepressing the expression of glutaredoxin 1, inhibition of histone deacetylase 2 prevents nutrient stress-induced protein S-glutathionylation and monocyte dysfunction and protects against atherosclerosis. METHODS Using both a pharmacological inhibitor and shRNA-mediated knockdown of histone deacetylase 2, we determine the role of this deacetylase on glutaredoxin 1 expression and nutrient stress-induced inactivation of mitogen-activated protein kinase phosphatase 1 activity and monocyte and macrophage dysfunction. To assess whether histone deacetylase 2 inhibition in myeloid cells protects against atherosclerosis, we fed eight-week-old female and male HDAC2-/-MyeloidLDLR-/- mice and age and sex-matched LysMcretg/wtLDLR-/- control mice a high-calorie diet for 12 weeks and assessed monocyte function and atherosclerotic lesion size. RESULTS Myeloid histone deacetylase 2 deficiency in high-calorie diet-fed LDLR-/- mice reduced atherosclerosis in males by 39% without affecting plasma lipid and lipoprotein profiles or blood glucose levels but had no effect on atherogenesis in female mice. Macrophage content in plaques of male mice was reduced by 31%. Histone deacetylase 2-deficient blood monocytes from male mice showed increased acetylation on histone 3, and increased Grx1 expression, and was associated with increased MKP-1 activity and reduced recruitment of monocyte-derived macrophages, whereas in females, myeloid HDAC2 deficiency had no effect on Grx1 expression, did not prevent nutrient stress-induced loss of MKP-1 activity in monocytes and was not atheroprotective. CONCLUSIONS Specific histone deacetylase 2 inhibitors may represent a potential novel therapeutic strategy for the prevention and treatment of atherosclerosis, but any benefits may be sexually dimorphic.
Collapse
Affiliation(s)
- Luxi Wang
- Department of Internal Medicine, Wake Forest School of Medicine, USA
| | - Yong Joo Ahn
- Department of Internal Medicine, Wake Forest School of Medicine, USA
| | - Reto Asmis
- Department of Internal Medicine, Wake Forest School of Medicine, USA.
| |
Collapse
|
16
|
Histone deacetylase 3 in hippocampus contributes to memory impairment after chronic constriction injury of sciatic nerve in mice. Pain 2021; 162:382-395. [PMID: 32868749 DOI: 10.1097/j.pain.0000000000002056] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Accepted: 08/14/2020] [Indexed: 02/06/2023]
Abstract
ABSTRACT Chronic neuropathic pain is frequently accompanied by memory impairment, yet the underlying mechanisms remain unclear. Here, we showed that mice displayed memory impairment starting at 14 days and lasting for at least 21 days after chronic constriction injury (CCI) of unilateral sciatic nerve in mice. Systemic administration of the pan histone deacetylase (HDAC) inhibitor sodium butyrate attenuated this memory impairment. More specifically, we found that hippocampus HDAC3 was involved in this process because the levels of its mRNA and protein increased significantly in the hippocampus at 14 and 21 days after CCI, but not sham surgery. Systemic administration of the selective HDAC3 antagonist RGFP966 attenuated CCI-induced memory impairment, improved hippocampal long-term potentiation impairment, and rescued reductions of dendritic spine density and synaptic plasticity-associated protein in the hippocampus. In addition, HDAC3 overexpression in the hippocampus led to memory impairment without affecting basal nociceptive responses in naive mice. Our findings suggest that HDAC3 contributes to memory impairment after CCI by impairing synaptic plasticity in hippocampus. Histone deacetylase 3 might serve as a potential molecular target for therapeutic treatment of memory impairment under neuropathic pain conditions.
Collapse
|
17
|
Sakloth F, Manouras L, Avrampou K, Mitsi V, Serafini RA, Pryce KD, Cogliani V, Berton O, Jarpe M, Zachariou V. HDAC6-selective inhibitors decrease nerve-injury and inflammation-associated mechanical hypersensitivity in mice. Psychopharmacology (Berl) 2020; 237:2139-2149. [PMID: 32388618 PMCID: PMC7470631 DOI: 10.1007/s00213-020-05525-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Accepted: 04/13/2020] [Indexed: 12/31/2022]
Abstract
BACKGROUND HDAC6 is a class IIB histone deacetylase expressed at many levels of the nociceptive pathway. This study tested the ability of novel and selective HDAC6 inhibitors to alleviate sensory hypersensitivity behaviors in mouse models of peripheral nerve injury and peripheral inflammation. METHODS We utilized the murine spared nerve injury (SNI) model for peripheral nerve injury and the Complete Freund's Adjuvant (CFA) model of peripheral inflammation. We applied the Von Frey assay to monitor mechanical allodynia. RESULTS Using the SNI model, we demonstrate that daily administration of the brain-penetrant HDAC6 inhibitor, ACY-738, abolishes mechanical allodynia in male and in female mice. Importantly, there is no tolerance to the antiallodynic actions of these compounds as they produce a consistent increase in Von Frey thresholds for several weeks. We observed a similar antiallodynic effect when utilizing the HDAC6 inhibitor, ACY-257, which shows limited brain expression when administered systemically. We also demonstrate that ACY-738 and ACY-257 attenuate mechanical allodynia in the CFA model of peripheral inflammation. CONCLUSIONS Overall, our findings suggest that inhibition of HDAC6 provides a promising therapeutic avenue for the alleviation of mechanical allodynia associated with peripheral nerve injury and peripheral inflammation.
Collapse
Affiliation(s)
- Farhana Sakloth
- Nash Family Department of Neuroscience, and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, 1425 Madison Ave, Box 10-65, New York, NY, 10029, USA
| | - Lefteris Manouras
- Nash Family Department of Neuroscience, and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, 1425 Madison Ave, Box 10-65, New York, NY, 10029, USA
| | - Kleopatra Avrampou
- Nash Family Department of Neuroscience, and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, 1425 Madison Ave, Box 10-65, New York, NY, 10029, USA
| | - Vasiliki Mitsi
- Nash Family Department of Neuroscience, and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, 1425 Madison Ave, Box 10-65, New York, NY, 10029, USA
| | - Randal A Serafini
- Nash Family Department of Neuroscience, and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, 1425 Madison Ave, Box 10-65, New York, NY, 10029, USA
| | - Kerri D Pryce
- Nash Family Department of Neuroscience, and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, 1425 Madison Ave, Box 10-65, New York, NY, 10029, USA
| | - Valeria Cogliani
- Nash Family Department of Neuroscience, and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, 1425 Madison Ave, Box 10-65, New York, NY, 10029, USA
| | - Olivier Berton
- Nash Family Department of Neuroscience, and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, 1425 Madison Ave, Box 10-65, New York, NY, 10029, USA
- Division of Neuroscience & Behavior, National institute on Drug Abuse (NIDA), 6001 Executive Blvd, Rm 4289, Rockville, MD, 20852, USA
| | - Matthew Jarpe
- Regenacy Pharmaceuticals, 303 Wyman St, Suite 300, Waltham, MA, USA
| | - Venetia Zachariou
- Nash Family Department of Neuroscience, and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, 1425 Madison Ave, Box 10-65, New York, NY, 10029, USA.
- Department of Pharmacological Sciences, Icahn School of Medicine at Mount Sinai, 1425 Madison Ave, New York, NY, 10029, USA.
| |
Collapse
|
18
|
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.
Collapse
|
19
|
He XT, Hu XF, Zhu C, Zhou KX, Zhao WJ, Zhang C, Han X, Wu CL, Wei YY, Wang W, Deng JP, Chen FM, Gu ZX, Dong YL. Suppression of histone deacetylases by SAHA relieves bone cancer pain in rats via inhibiting activation of glial cells in spinal dorsal horn and dorsal root ganglia. J Neuroinflammation 2020; 17:125. [PMID: 32321538 PMCID: PMC7175547 DOI: 10.1186/s12974-020-01740-5] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Accepted: 02/06/2020] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Robust activation of glial cells has been reported to occur particularly during the pathogenesis of bone cancer pain (BCP). Researchers from our group and others have shown that histone deacetylases (HDACs) play a significant role in modulating glia-mediated immune responses; however, it still remains unclear whether HDACs are involved in the activation of glial cells during the development of BCP. METHODS BCP model was established by intra-tibia tumor cell inoculation (TCI). The expression levels and distribution sites of histone deacetylases (HDACs) in the spinal dorsal horn and dorsal root ganglia were evaluated by Western blot and immunofluorescent staining, respectively. Suberoylanilide hydroxamic acid (SAHA), a clinically used HDAC inhibitor, was then intraperitoneally and intrathecally injected to rescue the increased expression levels of HDAC1 and HDAC2. The analgesic effects of SAHA administration on BCP were then evaluated by measuring the paw withdrawal thresholds (PWTs). The effects of SAHA on activation of glial cells and expression of proinflammatory cytokines (TNF-α, IL-1β, and IL-6) in the spinal dorsal horn and dorsal root ganglia of TCI rats were further evaluated by immunofluorescent staining and Western blot analysis. Subsequently, the effects of SAHA administration on tumor growth and cancer cell-induced bone destruction were analyzed by hematoxylin and eosin (HE) staining and micro-CT scanning. RESULTS TCI caused rapid and long-lasting increased expression of HDAC1/HDAC2 in glial cells of the spinal dorsal horn and dorsal root ganglia. Inhibiting HDACs by SAHA not only reversed TCI-induced upregulation of HDACs but also inhibited the activation of glial cells in the spinal dorsal horn and dorsal root ganglia, and relieved TCI-induced mechanical allodynia. Further, we found that SAHA administration could not prevent cancer infiltration or bone destruction in the tibia, which indicated that the analgesic effects of SAHA were not due to its anti-tumor effects. Moreover, we found that SAHA administration could inhibit GSK3β activity in the spinal dorsal horn and dorsal root ganglia, which might contributed to the relief of BCP. CONCLUSION Our findings suggest that HDAC1 and HDAC2 are involved in the glia-mediated neuroinflammation in the spinal dorsal horn and dorsal root ganglia underlying the pathogenesis of BCP, which indicated that inhibiting HDACs by SAHA might be a potential strategy for pain relief of BCP.
Collapse
Affiliation(s)
- Xiao-Tao He
- Department of Human Anatomy, Histology and Embryology & K.K. Leung Brain Research Centre, Preclinical School of Medicine, The Fourth Military Medical University, Xi'an, 710032, People's Republic of China.,Department of Periodontology, School of Stomatology, The Fourth Military Medical University, Xi'an, 710032, People's Republic of China
| | - Xiao-Fan Hu
- Department of Human Anatomy, Histology and Embryology & K.K. Leung Brain Research Centre, Preclinical School of Medicine, The Fourth Military Medical University, Xi'an, 710032, People's Republic of China.,Department of Orthopedics, Xijing Hospital, The Fourth Military Medical University, Xi'an, 710032, People's Republic of China
| | - Chao Zhu
- Department of Orthopedics, Xijing Hospital, The Fourth Military Medical University, Xi'an, 710032, People's Republic of China.,Department of Spine Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, People's Republic of China
| | - Kai-Xiang Zhou
- Department of Human Anatomy, Histology and Embryology & K.K. Leung Brain Research Centre, Preclinical School of Medicine, The Fourth Military Medical University, Xi'an, 710032, People's Republic of China
| | - Wen-Jun Zhao
- Department of Human Anatomy, Histology and Embryology & K.K. Leung Brain Research Centre, Preclinical School of Medicine, The Fourth Military Medical University, Xi'an, 710032, People's Republic of China.,Student Brigade, The Fourth Military Medical University, Xi'an, 710032, People's Republic of China
| | - Chen Zhang
- Department of Human Anatomy, Histology and Embryology & K.K. Leung Brain Research Centre, Preclinical School of Medicine, The Fourth Military Medical University, Xi'an, 710032, People's Republic of China.,Student Brigade, The Fourth Military Medical University, Xi'an, 710032, People's Republic of China
| | - Xiao Han
- Department of Human Anatomy, Histology and Embryology & K.K. Leung Brain Research Centre, Preclinical School of Medicine, The Fourth Military Medical University, Xi'an, 710032, People's Republic of China.,Student Brigade, The Fourth Military Medical University, Xi'an, 710032, People's Republic of China
| | - Chang-Le Wu
- Department of Human Anatomy, Histology and Embryology & K.K. Leung Brain Research Centre, Preclinical School of Medicine, The Fourth Military Medical University, Xi'an, 710032, People's Republic of China.,Student Brigade, The Fourth Military Medical University, Xi'an, 710032, People's Republic of China
| | - Yan-Yan Wei
- Department of Human Anatomy, Histology and Embryology & K.K. Leung Brain Research Centre, Preclinical School of Medicine, The Fourth Military Medical University, Xi'an, 710032, People's Republic of China
| | - Wei Wang
- State Key Laboratory of Military Stomatology, Department of Anesthesiology, School of Stomatology, The Fourth Military Medical University, Xi'an, 710032, People's Republic of China
| | - Jian-Ping Deng
- Department of Neurosurgery, Tangdu Hospital, The Fourth Military Medical University, Xi'an, 710032, People's Republic of China
| | - Fa-Ming Chen
- Department of Periodontology, School of Stomatology, The Fourth Military Medical University, Xi'an, 710032, People's Republic of China.
| | - Ze-Xu Gu
- State Key Laboratory of Military Stomatology, Department of Orthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, 710032, People's Republic of China.
| | - Yu-Lin Dong
- Department of Human Anatomy, Histology and Embryology & K.K. Leung Brain Research Centre, Preclinical School of Medicine, The Fourth Military Medical University, Xi'an, 710032, People's Republic of China.
| |
Collapse
|
20
|
Hagenston AM, Bading H, Bas-Orth C. Functional Consequences of Calcium-Dependent Synapse-to-Nucleus Communication: Focus on Transcription-Dependent Metabolic Plasticity. Cold Spring Harb Perspect Biol 2020; 12:cshperspect.a035287. [PMID: 31570333 DOI: 10.1101/cshperspect.a035287] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
In the nervous system, calcium signals play a major role in the conversion of synaptic stimuli into transcriptional responses. Signal-regulated gene transcription is fundamental for a range of long-lasting adaptive brain functions that include learning and memory, structural plasticity of neurites and synapses, acquired neuroprotection, chronic pain, and addiction. In this review, we summarize the diverse mechanisms governing calcium-dependent transcriptional regulation associated with central nervous system plasticity. We focus on recent advances in the field of synapse-to-nucleus communication that include studies of the signal-regulated transcriptome in human neurons, identification of novel regulatory mechanisms such as activity-induced DNA double-strand breaks, and the identification of novel forms of activity- and transcription-dependent adaptations, in particular, metabolic plasticity. We summarize the reciprocal interactions between different kinds of neuroadaptations and highlight the emerging role of activity-regulated epigenetic modifiers in gating the inducibility of signal-regulated genes.
Collapse
Affiliation(s)
- Anna M Hagenston
- Department of Neurobiology, Interdisciplinary Center for Neurosciences (IZN), Heidelberg University, 69120 Heidelberg, Germany
| | - Hilmar Bading
- Department of Neurobiology, Interdisciplinary Center for Neurosciences (IZN), Heidelberg University, 69120 Heidelberg, Germany
| | - Carlos Bas-Orth
- Department of Medical Cell Biology, Institute for Anatomy and Cell Biology, Heidelberg University, 69120 Heidelberg, Germany
| |
Collapse
|
21
|
Basu P, Basu A. In Vitro and In Vivo Effects of Flavonoids on Peripheral Neuropathic Pain. Molecules 2020; 25:molecules25051171. [PMID: 32150953 PMCID: PMC7179245 DOI: 10.3390/molecules25051171] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Accepted: 03/02/2020] [Indexed: 01/04/2023] Open
Abstract
Neuropathic pain is a common symptom and is associated with an impaired quality of life. It is caused by the lesion or disease of the somatosensory system. Neuropathic pain syndromes can be subdivided into two categories: central and peripheral neuropathic pain. The present review highlights the peripheral neuropathic models, including spared nerve injury, spinal nerve ligation, partial sciatic nerve injury, diabetes-induced neuropathy, chemotherapy-induced neuropathy, chronic constriction injury, and related conditions. The drugs which are currently used to attenuate peripheral neuropathy, such as antidepressants, anticonvulsants, baclofen, and clonidine, are associated with adverse side effects. These negative side effects necessitate the investigation of alternative therapeutics for treating neuropathic pain conditions. Flavonoids have been reported to alleviate neuropathic pain in murine models. The present review elucidates that several flavonoids attenuate different peripheral neuropathic pain conditions at behavioral, electrophysiological, biochemical and molecular biological levels in different murine models. Therefore, the flavonoids hold future promise and can be effectively used in treating or mitigating peripheral neuropathic conditions. Thus, future studies should focus on the structure-activity relationships among different categories of flavonoids and develop therapeutic products that enhance their antineuropathic effects.
Collapse
Affiliation(s)
- Paramita Basu
- Department of Anesthesiology, Pittsburgh Center for Pain Research, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA;
| | - Arpita Basu
- Department of Kinesiology and Nutrition Sciences, School of Integrated Health Sciences, University of Nevada, Las Vegas, NV 89154, USA
- Correspondence: ; Tel.: +702-895-4576; Fax: +702-895-1500
| |
Collapse
|
22
|
Yuan H, Du S, Chen L, Xu X, Wang Y, Ji F. Hypomethylation of nerve growth factor (NGF) promotes binding of C/EBPα and contributes to inflammatory hyperalgesia in rats. J Neuroinflammation 2020; 17:34. [PMID: 31980031 PMCID: PMC6982391 DOI: 10.1186/s12974-020-1711-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Accepted: 01/13/2020] [Indexed: 11/11/2022] Open
Abstract
Background Chronic pain usually accompanied by tissue damage and inflammation. However, the pathogenesis of chronic pain remains unclear. Methods We investigated the role of nerve growth factor (NGF) in chronic inflammatory pain induced by complete Freund’s adjuvant (CFA), explored the methylation status of CpG islands in the promoter region of the NGF gene, and clarified the function and mechanism of C/EBPα-NGF signaling pathway from epigenetic perspective in the chronic inflammatory pain model. Results CFA induced significant hyperalgesia and continuous upregulation of NGF mRNA and protein levels in the L4–6 dorsal root ganglions (DRGs) in rats. Hypomethylation of CpG islands occurred in the NGF gene promoter region after CFA treatment. At the same time, the miR-29b expression level was significantly increased, while the DNA methyltransferase 3b (DNMT3b) level reduced significantly. Moreover, CFA treatment promoted binding of C/EBPα to the NGF gene promoter region and C/EBPα siRNA treatment obviously decreased expression of NGF levels and also alleviate inflammatory hyperalgesia significantly in rats. Conclusion Collectively, the results indicated that CFA leads to the upregulation of miR-29b level, which represses the expression of DNMT3b, enhances the demethylation of the NGF gene promoter region, and promotes the binding of C/EBPα with the NGF gene promoter, thus results in the upregulation of NGF gene expression and maintenance of chronic inflammatory pain.
Collapse
Affiliation(s)
- Hongjie Yuan
- The First Affiliated Hospital of Soochow University, Suzhou, 215006, Jiangsu, People's Republic of China.,Department of Pain Medicine, Nantong Hospital of Traditional Chinese Medicine, Nantong, 226001, Jiangsu, People's Republic of China
| | - Shibin Du
- Department of Anesthesiology, Shenzhen University Clinical Medical Academy, Shenzhen University General Hospital, Shenzhen, 518055, Guangdong, People's Republic of China
| | - Liping Chen
- The First Affiliated Hospital of Soochow University, Suzhou, 215006, Jiangsu, People's Republic of China
| | - Xiaoqing Xu
- Department of Pain Medicine, Nantong Hospital of Traditional Chinese Medicine, Nantong, 226001, Jiangsu, People's Republic of China
| | - Yufeng Wang
- Department of Radiology, Nantong Hospital of Traditional Chinese Medicine, Nantong, 226001, Jiangsu, People's Republic of China
| | - Fuhai Ji
- The First Affiliated Hospital of Soochow University, Suzhou, 215006, Jiangsu, People's Republic of China.
| |
Collapse
|
23
|
Yuan H, Du S, Chen L, Xu X, Wang Y, Ji F. Hypomethylation of nerve growth factor (NGF) promotes binding of C/EBPα and contributes to inflammatory hyperalgesia in rats. J Neuroinflammation 2020. [PMID: 31980031 DOI: hypomethylation of nerve growth factor (ngf) promotes binding of c/ebpα and contributes to inflammatory hyperalgesia in rats] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Chronic pain usually accompanied by tissue damage and inflammation. However, the pathogenesis of chronic pain remains unclear. METHODS We investigated the role of nerve growth factor (NGF) in chronic inflammatory pain induced by complete Freund's adjuvant (CFA), explored the methylation status of CpG islands in the promoter region of the NGF gene, and clarified the function and mechanism of C/EBPα-NGF signaling pathway from epigenetic perspective in the chronic inflammatory pain model. RESULTS CFA induced significant hyperalgesia and continuous upregulation of NGF mRNA and protein levels in the L4-6 dorsal root ganglions (DRGs) in rats. Hypomethylation of CpG islands occurred in the NGF gene promoter region after CFA treatment. At the same time, the miR-29b expression level was significantly increased, while the DNA methyltransferase 3b (DNMT3b) level reduced significantly. Moreover, CFA treatment promoted binding of C/EBPα to the NGF gene promoter region and C/EBPα siRNA treatment obviously decreased expression of NGF levels and also alleviate inflammatory hyperalgesia significantly in rats. CONCLUSION Collectively, the results indicated that CFA leads to the upregulation of miR-29b level, which represses the expression of DNMT3b, enhances the demethylation of the NGF gene promoter region, and promotes the binding of C/EBPα with the NGF gene promoter, thus results in the upregulation of NGF gene expression and maintenance of chronic inflammatory pain.
Collapse
Affiliation(s)
- Hongjie Yuan
- The First Affiliated Hospital of Soochow University, Suzhou, 215006, Jiangsu, People's Republic of China.,Department of Pain Medicine, Nantong Hospital of Traditional Chinese Medicine, Nantong, 226001, Jiangsu, People's Republic of China
| | - Shibin Du
- Department of Anesthesiology, Shenzhen University Clinical Medical Academy, Shenzhen University General Hospital, Shenzhen, 518055, Guangdong, People's Republic of China
| | - Liping Chen
- The First Affiliated Hospital of Soochow University, Suzhou, 215006, Jiangsu, People's Republic of China
| | - Xiaoqing Xu
- Department of Pain Medicine, Nantong Hospital of Traditional Chinese Medicine, Nantong, 226001, Jiangsu, People's Republic of China
| | - Yufeng Wang
- Department of Radiology, Nantong Hospital of Traditional Chinese Medicine, Nantong, 226001, Jiangsu, People's Republic of China
| | - Fuhai Ji
- The First Affiliated Hospital of Soochow University, Suzhou, 215006, Jiangsu, People's Republic of China.
| |
Collapse
|
24
|
Yi D, Wang K, Zhu B, Li S, Liu X. Identification of neuropathic pain-associated genes and pathways via random walk with restart algorithm. J Neurosurg Sci 2020; 65:414-420. [PMID: 32536116 DOI: 10.23736/s0390-5616.20.04920-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Neuropathic pain (NP) develops from neuropathic lesions or diseases affecting the nervous system, and has become a serious public health issue due to its complex symptoms, high incidence and long duration. At present, the exact pathogenesis of NP is still unclear. In this study, we sought to identify the genes as well as the related molecular mechanisms associated with NP occurrence and development. METHODS We firstly identified the differentially expressed genes between NP spinal nerve ligation (SNL) rats and control sham rats and then projected them onto a STRING network for functional association analysis. Then, Random Walk with Restart (RWR) was conducted to find some new NP-related genes, with their potential functions sequentially analyzed by GO annotation and KEGG pathway analysis. RESULTS Some new NP-related genes, like Gng13, C3 and Cxcl2, were identified by RWR analysis. Meanwhile, some biological functions like inflammatory responses, chemotaxis and immune responses, as well as some signaling pathways, such as those involved in neuroactive ligand-receptor interactions, complement and blood coagulation cascade reactions, and cytokine-receptor interactions that the new NP- related genes were most activated were found to be associated with NP occurrence and development. CONCLUSIONS This study extends our knowledge of NP occurrence and development and provides new therapeutic targets for future NP treatment.
Collapse
Affiliation(s)
- Duan Yi
- Department of Pain Medicine Center, Peking University Third Hospital, Beijing China
| | - Kai Wang
- Department of Pain Medicine Center, Peking University Third Hospital, Beijing China
| | - Bin Zhu
- Department of Pain Medicine Center, Peking University Third Hospital, Beijing China
| | - Shuiqing Li
- Department of Pain Medicine Center, Peking University Third Hospital, Beijing China
| | - Xiaoguang Liu
- Department of Orthopedic, Peking University Third Hospital, Beijing China -
| |
Collapse
|
25
|
Mahurkar-Joshi S, Chang L. Epigenetic Mechanisms in Irritable Bowel Syndrome. Front Psychiatry 2020; 11:805. [PMID: 32922317 PMCID: PMC7456856 DOI: 10.3389/fpsyt.2020.00805] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Accepted: 07/27/2020] [Indexed: 12/12/2022] Open
Abstract
Irritable bowel syndrome (IBS) is a brain-gut axis disorder characterized by abdominal pain and altered bowel habits. IBS is a multifactorial, stress-sensitive disorder with evidence for familial clustering attributed to genetic or shared environmental factors. However, there are weak genetic associations reported with IBS and a lack of evidence to suggest that major genetic factor(s) contribute to IBS pathophysiology. Studies on animal models of stress, including early life stress, suggest a role for environmental factors, specifically, stress associated with dysregulation of corticotropin releasing factor and hypothalamus-pituitary-adrenal (HPA) axis pathways in the pathophysiology of IBS. Recent evidence suggests that epigenetic mechanisms, which constitute molecular changes not driven by a change in gene sequence, can mediate environmental effects on central and peripheral function. Epigenetic alterations including DNA methylation changes, histone modifications, and differential expression of non-coding RNAs (microRNA [miRNA] and long non-coding RNA) have been associated with several diseases. The objective of this review is to elucidate the molecular factors in the pathophysiology of IBS with an emphasis on epigenetic mechanisms. Emerging evidence for epigenetic changes in IBS includes changes in DNA methylation in animal models of IBS and patients with IBS, and various miRNAs that have been associated with IBS and endophenotypes, such as increased visceral sensitivity and intestinal permeability. DNA methylation, in particular, is an emerging field in the realm of complex diseases and a promising mechanism which can provide important insights into IBS pathogenesis and identify potential targets for treatment.
Collapse
Affiliation(s)
- Swapna Mahurkar-Joshi
- G. Oppenheimer Center for Neurobiology of Stress and Resilience, Division of Digestive Diseases, Department of Medicine at UCLA, Los Angeles, CA, United States
| | - Lin Chang
- G. Oppenheimer Center for Neurobiology of Stress and Resilience, Division of Digestive Diseases, Department of Medicine at UCLA, Los Angeles, CA, United States
| |
Collapse
|
26
|
Sosanya NM, Kumar R, Clifford JL, Chavez R, Dimitrov G, Srinivasan S, Gautam A, Trevino AV, Williams M, Hammamieh R, Cheppudira BP, Christy RJ, Crimmins SL. Identifying Plasma Derived Extracellular Vesicle (EV) Contained Biomarkers in the Development of Chronic Neuropathic Pain. THE JOURNAL OF PAIN 2020; 21:82-96. [DOI: 10.1016/j.jpain.2019.05.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 05/09/2019] [Accepted: 05/24/2019] [Indexed: 12/29/2022]
|
27
|
欧阳 碧, 唐 朝, 侯 新, 陈 旦, 郭 曲, 翁 莹. [Trichostatin A suppresses up-regulation of histone deacetylase 4 and reverses differential expressions of miRNAs in the spinal cord of rats with chronic constrictive injury]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2019; 39:1421-1426. [PMID: 31907145 PMCID: PMC6942983 DOI: 10.12122/j.issn.1673-4254.2019.12.05] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Indexed: 12/12/2022]
Abstract
OBJECTIVE To explore the analgesic mechanism of intrathecal trichostatin A (TSA) injection in a rat model of neuropathic pain induced by chronic constrictive injury (CCI). METHODS Male SD rats were randomized into sham operation+ DMSO group (group S), CCI +DMSO group (group C), CCI +10 μg TSA group (group T), and in the latter two groups, rat models of neuropathic pain were established induced by CCI. The rats were given intrathecal injections of 10 μL 5% DMSO or 10 μg TSA (in 5% DMSO) once a day on days 7 to 9 after CCI or sham operation. The rats were euthanized after behavioral tests on day 10, and the lumbar segment of the spinal cord was sampled to determine the expression of histone deacetylase 4 (HDAC4) protein and mRNA and detect the differentially expressed miRNAs using a miRNA chip. MiR-190b-5p and miR-142-3p were selected for validation of the results using RT-qPCR. RESULTS Compared with those in group S, the rats in group C showed significantly decreased paw withdrawal mechanical threshold (PWMT) from day 3 to day 10 after CCI (P < 0.05); intrathecal injection of TSA significantly reversed the reduction of PWMT following CCI (P < 0.05). Positive HDAC4 expression was detected mainly in the cytoplasm of the neurons in the gray matter of the spinal cord, and was obviously up-regulated after CCI (Ρ < 0.05). Intrathecal injection of TSA significantly suppressed CCI-induced up-regulation of HDAC4 at 10 days after the operation (P < 0.05). Compared with the miRNA profile in group S, miRNA profiling identified 83 differentially expressed miRNAs in group C (fold change ≥2 or ≤0.5, P < 0.05); TSA treatment reversed the expressions of 58 of the differentially expressed miRNAs following CCI, including 41 miRNAs that were decreased after CCI but up-regulated following TSA treatment. The results of real-time PCR validated the changes in the expressions of miR-190b-5p and miR-142-3p. CONCLUSIONS TSA suppresses CCI-induced up-regulation of HDAC4 and reverses differential expressions of miRNAs in the spinal cord of rats, which may contribute to the analgesic effect of TSA on neuropathic pain.
Collapse
Affiliation(s)
- 碧函 欧阳
- 中南大学湘雅医院 健康管理中心,湖南 长沙 410008Health Management Center, Xiangya Hospital of Central South University, Changsha 410008, China
| | - 朝辉 唐
- 中南大学湘雅医院 麻醉科,湖南 长沙 410008Department of Anesthesiology, Xiangya Hospital of Central South University, Changsha 410008, China
| | - 新冉 侯
- 中南大学湘雅医院 麻醉科,湖南 长沙 410008Department of Anesthesiology, Xiangya Hospital of Central South University, Changsha 410008, China
| | - 旦 陈
- 中南大学湘雅医院 麻醉科,湖南 长沙 410008Department of Anesthesiology, Xiangya Hospital of Central South University, Changsha 410008, China
| | - 曲练 郭
- 中南大学湘雅医院 麻醉科,湖南 长沙 410008Department of Anesthesiology, Xiangya Hospital of Central South University, Changsha 410008, China
| | - 莹琪 翁
- 中南大学湘雅医院 麻醉科,湖南 长沙 410008Department of Anesthesiology, Xiangya Hospital of Central South University, Changsha 410008, China
| |
Collapse
|
28
|
Valproate reverses stress-induced somatic hyperalgesia and visceral hypersensitivity by up-regulating spinal 5-HT 2C receptor expression in female rats. Neuropharmacology 2019; 165:107926. [PMID: 31883927 DOI: 10.1016/j.neuropharm.2019.107926] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2019] [Revised: 11/15/2019] [Accepted: 12/20/2019] [Indexed: 12/15/2022]
Abstract
Sodium valproate (VPA) has analgesic effects in clinical and experimental studies, but the mechanisms are still unclear. The present study examined the effects of VPA on stress-induced somatic hyperalgesia and visceral hypersensitivity and the role of 5-HT2C receptors in the spinal cord. Repeated 3 day forced swim (FS) significantly reduced the thermal withdrawal latency and mechanical withdrawal threshold, and increased the magnitude of the visceromotor response to colorectal distention compared to the baseline values in rats. The somatic hyperalgesia and visceral hypersensitivity were accompanied by significant down-regulation of 5-HT2C receptor expression in the L4-L5 and L6-S1 dorsal spinal cord. Intraperitoneal administration of VPA (300 mg/kg) before each FS and 1 day post FS prevented the development of somatic hyperalgesia and visceral hypersensitivity induced by FS stress, as well as down-regulation of 5-HT2C receptors in the spinal cord. The reversal of somatic hyperalgesia and visceral hypersensitivity by VPA in FS rats was blocked by intrathecal administration of the selective 5-HT2C receptor antagonist RS-102221 (30 μg/10 μL) 30 min after each VPA injection. The results suggest that VPA attenuates FS-induced somatic hyperalgesia and visceral hypersensitivity by restoring down-regulated function of 5-HT2C receptors in the spinal cord.
Collapse
|
29
|
Lin R, Luo L, Gong Y, Zheng J, Wang S, Du J, Luo D. Immunohistochemical analysis of histone H3 acetylation in the trigeminal root entry zone in an animal model of trigeminal neuralgia. J Neurosurg 2019; 131:828-838. [PMID: 30497181 DOI: 10.3171/2018.5.jns172948] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Accepted: 05/23/2018] [Indexed: 01/13/2023]
Abstract
OBJECTIVE The trigeminal root entry zone (TREZ) is a transitional zone between the central nervous system (CNS) and peripheral nervous system (PNS), adjacent to the brainstem. Microvascular compression of the TREZ has been considered to be the primary etiology in most cases of trigeminal neuralgia (TN), but whether epigenetic regulation is involved in the pathogenesis of TN is still unclear. Therefore, this study was designed to investigate the epigenetic regulation of histone H3 acetylation in the TREZ in an animal model of TN. METHODS An animal model of TN was established, and adult male Sprague-Dawley rats were randomly assigned to a TN group with trigeminal nerve root compression, sham operation group, TN+HDACi group (TN plus selective histone deacetylase inhibitor injection into the TREZ), or TN+Veh group (TN plus vehicle injection into the TREZ). To measure the length of the central portion of the TREZ from the junction of the trigeminal nerve root entering the pons to the interface of the dome-shaped CNS-PNS transitional zone, immunofluorescent staining of glia and glial nuclei was performed using glial fibrillary acidic protein (GFAP) antibody and DAPI, respectively. To investigate the acetylation of histone H3 within the TREZ in a TN animal model group and a sham operation group, localization of histone H3K9, H3K18, and H3K27 acetylation was examined via immunohistochemical staining methods. RESULTS Measurements of the CNS-PNS transitional zone in the TREZ revealed that the average length from the junction of the trigeminal nerve root connecting the pons to the glial fringe of the TREZ in the TN group was longer than that in the sham operation group (p < 0.05) and that the interface gradually migrated distally. Cells that stained positive for acetylated histone H3K9, H3K18, and H3K27 were distributed around both sides of the border of the CNS-PNS junction in the TREZ. The ratio of immunoreactive H3K9-, H3K18- and H3K27-positive cells in the TN group was obviously higher than that in the sham operation group on postoperative days 7, 14, 21, and 28 (p < 0.05). CONCLUSIONS These results suggested that chronic compression of the trigeminal nerve root may be involved in the pathogenesis of TN in an animal model by influencing the plasticity of the CNS-PNS transitional zone and the level of histone acetylation in the TREZ.
Collapse
Affiliation(s)
- Ren Lin
- 1Department of Human Anatomy, Histology and Embryology, School of Basic Medical Sciences, Fujian Medical University.,3Key Laboratory of Brain Aging and Neurodegenerative Diseases of Fujian Province, Fuzhou, Fujian, People's Republic of China
| | - Lili Luo
- 1Department of Human Anatomy, Histology and Embryology, School of Basic Medical Sciences, Fujian Medical University
| | - Yiran Gong
- 1Department of Human Anatomy, Histology and Embryology, School of Basic Medical Sciences, Fujian Medical University
| | - Jingsheng Zheng
- 1Department of Human Anatomy, Histology and Embryology, School of Basic Medical Sciences, Fujian Medical University
| | - Shuiyue Wang
- 1Department of Human Anatomy, Histology and Embryology, School of Basic Medical Sciences, Fujian Medical University
| | - Junjie Du
- 1Department of Human Anatomy, Histology and Embryology, School of Basic Medical Sciences, Fujian Medical University
| | - Daoshu Luo
- 1Department of Human Anatomy, Histology and Embryology, School of Basic Medical Sciences, Fujian Medical University.,2Fujian Provincial Key Laboratory of Neuroglia and Disease; and.,3Key Laboratory of Brain Aging and Neurodegenerative Diseases of Fujian Province, Fuzhou, Fujian, People's Republic of China
| |
Collapse
|
30
|
Buchheit T, Hsia HLJ, Cooter M, Shortell C, Kent M, McDuffie M, Shaw A, Buckenmaier CT, Van de Ven T. The Impact of Surgical Amputation and Valproic Acid on Pain and Functional Trajectory: Results from the Veterans Integrated Pain Evaluation Research (VIPER) Randomized, Double-Blinded Placebo-Controlled Trial. PAIN MEDICINE 2019; 20:2004-2017. [PMID: 31045229 DOI: 10.1093/pm/pnz067] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
OBJECTIVE To determine if the perioperative administration of valproic acid reduces the incidence of chronic pain three months after amputation or revision surgery. DESIGN Multicenter, randomized, double-blind, placebo-controlled trial. SETTING Academic, military, and veteran medical centers. SUBJECTS One hundred twenty-eight patients undergoing amputation or amputation revision surgery at Duke University Hospital, Walter Reed National Military Medical Center, or the Durham Veterans Affairs Medical Center for either medical disease or trauma. METHODS Patients were randomized to placebo or valproic acid for the duration of hospitalization and treated with multimodal analgesic care, including regional anesthetic blockade. Primary outcome was the proportion of patients with chronic pain at three months (average numeric pain score intensity of 3/10 or greater). Secondary outcomes included functional trajectories (assessed with the Brief Pain Inventory short form and the Defense and Veterans Pain Rating Scale). RESULTS The overall rate of chronic pain was 68.2% in the 107 patients who completed the end point assessment. There was no significant effect of perioperative valproic acid administration, with a rate of 65.45% (N = 36) in the treatment group and a rate of 71.15% (N = 37) in the placebo group. Overall, pain scores decreased from baseline to follow-up (median = -2 on the numeric pain scale). Patients additionally experienced improvements in self-perceived function. CONCLUSIONS The rate of chronic pain after amputation surgery is not significantly improved with the perioperative administration of valproic acid. In this cohort treated with multimodal perioperative analgesia and regional anesthetic blockade, we observed improvements in both pain severity and function.
Collapse
Affiliation(s)
- Thomas Buchheit
- Department of Anesthesiology, Duke University Medical Center, Durham VA Medical Center, Durham, North Carolina
| | - Hung-Lun John Hsia
- Department of Anesthesiology, Duke University Medical Center, Durham VA Medical Center, Durham, North Carolina
| | | | - Cynthia Shortell
- Surgery, Duke University Medical Center, Durham, North Carolina, USA
| | | | - Mary McDuffie
- Walter Reed National Military Medical Center, Defense and Veterans Center for Integrative Pain Management, Rockville, MD, USA
| | - Andrew Shaw
- Department of Anesthesiology and Pain Medicine, University of Alberta, Edmonton, Alberta, Canada
| | - Chester Trip Buckenmaier
- Department of Military Emergency Medicine, Defense and Veterans Center for Integrative Pain Management, Uniformed Services University, Bethesda, MD, USA
| | - Thomas Van de Ven
- Department of Anesthesiology, Duke University Medical Center, Durham VA Medical Center, Durham, North Carolina
| |
Collapse
|
31
|
HDAC2, but not HDAC1, regulates Kv1.2 expression to mediate neuropathic pain in CCI rats. Neuroscience 2019; 408:339-348. [PMID: 31022463 DOI: 10.1016/j.neuroscience.2019.03.033] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Revised: 03/13/2019] [Accepted: 03/14/2019] [Indexed: 12/27/2022]
Abstract
The expression of potassium ion channel subunit 1.2 (Kv1.2) in the dorsal root ganglion (DRG) influences the excitability of neurons, which contributes to the induction and development of neuropathic pain (NPP); however, the molecular mechanisms underlying the downregulation of Kv1.2 in NPP remain unknown. Histone deacetylase (HDAC) inhibitors are reported to attenuate the development of pain hypersensitivity in rats with NPP. Whether HDAC inhibitors contribute to regulation of Kv1.2 expression, and which specific HDAC subunit is involved in NPP, remain unexplored. In this study we established a chronic constrictive injury (CCI) model and used western blot, quantitative real-time PCR, immunostaining, intrathecal injection, and siRNA methods to explore which HDAC subunit is involved in regulating Kv1.2 expression to mediate NPP. Our results demonstrated that nerve injury led to upregulation of HDAC1 expression in the DRG, and of HDAC2 in the DRG and spinal cord. Double-labeling immunofluorescence histochemistry showed that Kv1.2 principally co-localized with HDAC2, but not HDAC1, in NF200-positive large neurons of the DRG. Intrathecal injection with the HDAC inhibitor, suberoylanilide hydroxamic acid, attenuated mechanical and thermal hypersensitivity and reversed the decreased expression of Kv1.2 in rats with CCI. Furthermore, treatment with HDAC2, but not HDAC1, siRNA also relieved mechanical and thermal hypersensitivity and upregulated the Kv1.2 expression in this model. In vitro transfection of PC12 cells with HDAC2 and HDAC1 siRNA confirmed that only HDAC2 siRNA could regulate the expression of Kv1.2. These findings suggest that HDAC2, but not HDAC1, is involved in NPP through regulation of Kv1.2 expression.
Collapse
|
32
|
Pharmacological rescue of nociceptive hypersensitivity and oxytocin analgesia impairment in a rat model of neonatal maternal separation. Pain 2019; 159:2630-2640. [PMID: 30169420 DOI: 10.1097/j.pain.0000000000001375] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Oxytocin (OT), known for its neurohormonal effects around birth, has recently been suggested for being a critical determinant in neurodevelopmental disorders. This hypothalamic neuropeptide exerts a potent analgesic effect through an action on the nociceptive system. This endogenous control of pain has an important adaptive value but might be altered by early life stress, possibly contributing to its long-term consequences on pain responses and associated comorbidities. We tested this hypothesis using a rat model of neonatal maternal separation (NMS) known to induce long-term consequences on several brain functions including chronic stress, anxiety, altered social behavior, and visceral hypersensitivity. We found that adult rats with a history of NMS were hypersensitive to noxious mechanical/thermal hot stimuli and to inflammatory pain. We failed to observe OT receptor-mediated stress-induced analgesia and OT antihyperalgesia after carrageenan inflammation. These alterations were partially rescued if NMS pups were treated by intraperitoneal daily injection during NMS with OT or its downstream second messenger allopregnanolone. The involvement of epigenetic changes in these alterations was confirmed since neonatal treatment with the histone deacetylase inhibitor SAHA, not only normalized nociceptive sensitivities but also restored OT receptor-mediated stress-induced analgesia and the endogenous antihyperalgesia in inflamed NMS rats. There is growing evidence in the literature that early life stress might impair the nociceptive system ontogeny and function. This study suggests that these alterations might be restored while stimulating OT receptor signaling or histone deacetylase inhibitors, using molecules that are currently available or part of clinical trials for other pathologies.
Collapse
|
33
|
Abstract
PURPOSE OF REVIEW The current review will discuss the current literature on genetics of pain and analgesia, with special emphasis on perioperative setting. We will also discuss pharmacogenetics-based management guidelines, current clinical status and future perspectives. RECENT FINDINGS Recent literature suggests that the interindividual variability in pain and postoperative analgesic response is at least in part because of one's genetic make-up. Some of the well characterized polymorphisms that are associated with surgical pain and opioid-related postoperative adverse outcomes are described in catechol-O-methyl transferase, CYP2D6 and μ-opioid receptor (OPRM1), ATP-binding cassette subfamily B member 1, ABCC3, organic cation transporter 1 genes. Clinical Pharmacogenetics Implementation Consortium has put forth recommendations on CYP2D6 genotype-based opioid selection and dosing. The list of drug-gene pairs studied continue to expand. SUMMARY Pharmacogenetic approach marks the dawn of personalized pain medicine both in perioperative and chronic pain settings.
Collapse
|
34
|
Comparison of Different Histone Deacetylase Inhibitors in Attenuating Inflammatory Pain in Rats. Pain Res Manag 2019; 2019:1648919. [PMID: 30809320 PMCID: PMC6369477 DOI: 10.1155/2019/1648919] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Accepted: 12/25/2018] [Indexed: 12/17/2022]
Abstract
Histone deacetylase inhibitors (HDACIs), which interfere with the epigenetic process of histone acetylation, have shown analgesic effects in animal models of persistent pain. The HDAC family comprises 18 genes; however, the different effects of distinct classes of HDACIs on pain relief remain unclear. The aim of this study was to determine the efficacy of these HDACIs on attenuating thermal hyperalgesia in persistent inflammatory pain. Persistent inflammatory pain was induced by injecting Complete Freund's Adjuvant (CFA) into the left hind paw of rats. Then, HDACIs targeting class I (entinostat (MS-275)) and class IIa (sodium butyrate, valproic acid (VPA), and 4-phenylbutyric acid (4-PBA)), or class II (suberoylanilide hydoxamic acid (SAHA), trichostatin A (TSA), and dacinostat (LAQ824)) were administered intraperitoneally once daily for 3 or 4 days. We found that the injection of SAHA once a day for 3 days significantly attenuated CFA-induced thermal hyperalgesia from day 4 and lasted 7 days. In comparison with SAHA, suppression of hyperalgesia by 4-PBA peaked on day 2, whereas that by MS-275 occurred on days 5 and 6. Fatigue was a serious side effect seen with MS-275. These findings will be beneficial for optimizing the selection of specific HDACIs in medical fields such as pain medicine and neuropsychiatry.
Collapse
|
35
|
Danaher RJ, Zhang L, Donley CJ, Laungani NA, Hui SE, Miller CS, Westlund KN. Histone deacetylase inhibitors prevent persistent hypersensitivity in an orofacial neuropathic pain model. Mol Pain 2019; 14:1744806918796763. [PMID: 30178698 PMCID: PMC6124181 DOI: 10.1177/1744806918796763] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
Chronic orofacial pain is a significant health problem requiring identification
of regulating processes. Involvement of epigenetic modifications that is
reported for hindlimb neuropathic pain experimental models, however, is less
well studied in cranial nerve pain models. Three independent observations
reported here are the (1) epigenetic profile in mouse trigeminal ganglia (TG)
after trigeminal inflammatory compression (TIC) nerve injury mouse model
determined by gene expression microarray, (2) H3K9 acetylation pattern in TG by
immunohistochemistry, and (3) efficacy of histone deacetylase (HDAC) inhibitors
to attenuate development of hypersensitivity. After TIC injury, ipsilateral
whisker pad mechanical sensitization develops by day 3 and persists well beyond
day 21 in contrast to sham surgery. Global acetylation of H3K9 decreases at day
21 in ipsilateral TG . Thirty-four genes are significantly
(p < 0.05) overexpressed in the ipsilateral TG by at least
two-fold at either 3 or 21 days post-trigeminal inflammatory compression injury.
The three genes most overexpressed three days post-trigeminal inflammatory
compression nerve injury are nerve regeneration-associated gene ATF3, up
6.8-fold, and two of its regeneration-associated gene effector genes, Sprr1a and
Gal, up 174- and 25-fold, respectively. Although transcription levels of 25 of
32 genes significantly overexpressed three days post-trigeminal inflammatory
compression return to constitutive levels by day 21, these three
regeneration-associated genes remain significantly overexpressed at the later
time point. On day 21, when tissues are healed, other differentially expressed
genes include 39 of the top 50 upregulated and downregulated genes. Remarkably,
preemptive manipulation of gene expression with two HDAC inhibitors (HDACi's),
suberanilohydroxamic acid (SAHA) and MS-275, reduces the magnitude and duration
of whisker pad mechanical hypersensitivity and prevents the development of a
persistent pain state. These findings suggest that trigeminal nerve injury leads
to epigenetic modifications favoring overexpression of genes involved in nerve
regeneration and that maintaining transcriptional homeostasis with epigenetic
modifying drugs could help prevent the development of persistent pain.
Collapse
Affiliation(s)
- Robert J Danaher
- 1 Department of Oral Health Practice, College of Dentistry, University of Kentucky, Lexington, KY, USA
| | - Liping Zhang
- 1 Department of Oral Health Practice, College of Dentistry, University of Kentucky, Lexington, KY, USA.,2 Department of Physiology, College of Medicine, University of Kentucky, Lexington, KY, USA
| | - Connor J Donley
- 2 Department of Physiology, College of Medicine, University of Kentucky, Lexington, KY, USA
| | - Nashwin A Laungani
- 1 Department of Oral Health Practice, College of Dentistry, University of Kentucky, Lexington, KY, USA
| | - S Elise Hui
- 3 Department of Anesthesiology & Critical Care Medicine, University of New Mexico Health Science Center, Albuquerque, NM, USA
| | - Craig S Miller
- 1 Department of Oral Health Practice, College of Dentistry, University of Kentucky, Lexington, KY, USA
| | - Karin N Westlund
- 2 Department of Physiology, College of Medicine, University of Kentucky, Lexington, KY, USA.,3 Department of Anesthesiology & Critical Care Medicine, University of New Mexico Health Science Center, Albuquerque, NM, USA
| |
Collapse
|
36
|
Luckhurst CA, Aziz O, Beaumont V, Bürli RW, Breccia P, Maillard MC, Haughan AF, Lamers M, Leonard P, Matthews KL, Raphy G, Stott AJ, Munoz-Sanjuan I, Thomas B, Wall M, Wishart G, Yates D, Dominguez C. Development and characterization of a CNS-penetrant benzhydryl hydroxamic acid class IIa histone deacetylase inhibitor. Bioorg Med Chem Lett 2019; 29:83-88. [DOI: 10.1016/j.bmcl.2018.11.009] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 11/02/2018] [Accepted: 11/05/2018] [Indexed: 12/13/2022]
|
37
|
Wen J, He T, Qi F, Chen H. MiR-206-3p alleviates chronic constriction injury-induced neuropathic pain through targeting HDAC4. Exp Anim 2018; 68:213-220. [PMID: 30587671 PMCID: PMC6511522 DOI: 10.1538/expanim.18-0091] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
It was identified that microRNAs were involved in the regulation of chronic neuropathic pain. However, the role of miR-206-3p in neuropathic pain was still unclear. In the current study, the role of miR-206-3p, a type of mature miR-206, in neuropathic pain was investigated. The potential mechanisms were also explored. We found that the expression of miR-206-3p decreased in the dorsal root ganglion (DRG) of chronic constriction sciatic nerve injury (CCI) rats, whereas the While histone deacetylase 4 (HDAC4) level increased. Further exploration showed that administration of a miR-206-3p mimic alleviated neuropathic pain and reduced the level of HDAC4, a predicted target of miR-206-3p. Overexpression of HDAC4 attenuated the effects of miR-206-3p on neuropathic pain. Our data revealed a miR-206-3p-HDAC4 signal that played a potentially important role in CCI-induced neuropathic pain.
Collapse
Affiliation(s)
- Jing Wen
- Department of Histology and Embryology, Medical College, Nanchang University, 461 Bayi Road, Nanchang 330006, People's Republic of China
| | - Tao He
- Department of Histology and Embryology, Medical College, Nanchang University, 461 Bayi Road, Nanchang 330006, People's Republic of China.,Nanchang Joint Programme, Queen Mary University of London, London E1 4NS, UK
| | - Fangfang Qi
- Department of Histology and Embryology, Medical College, Nanchang University, 461 Bayi Road, Nanchang 330006, People's Republic of China.,Nanchang Joint Programme, Queen Mary University of London, London E1 4NS, UK
| | - Hongping Chen
- Department of Histology and Embryology, Medical College, Nanchang University, 461 Bayi Road, Nanchang 330006, People's Republic of China.,Jiangxi Province Key Laboratory of Tumor Pathogen's and Molecular Pathology, Nanchang 330006, People's Republic of China
| |
Collapse
|
38
|
Feng XL, Deng HB, Wang ZG, Wu Y, Ke JJ, Feng XB. Suberoylanilide Hydroxamic Acid Triggers Autophagy by Influencing the mTOR Pathway in the Spinal Dorsal Horn in a Rat Neuropathic Pain Model. Neurochem Res 2018; 44:450-464. [PMID: 30560396 DOI: 10.1007/s11064-018-2698-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2018] [Revised: 11/05/2018] [Accepted: 12/10/2018] [Indexed: 02/08/2023]
Abstract
Histone acetylation levels can be upregulated by treating cells with histone deacetylase inhibitors (HDACIs), which can induce autophagy. Autophagy flux in the spinal cord of rats following the left fifth lumber spinal nerve ligation (SNL) is involved in the progression of neuropathic pain. Suberoylanilide hydroxamic acid (SAHA), one of the HDACIs can interfere with the epigenetic process of histone acetylation, which has been shown to ease neuropathic pain. Recent research suggest that SAHA can stimulate autophagy via the mammalian target of rapamycin (mTOR) pathway in some types of cancer cells. However, little is known about the role of SAHA and autophagy in neuropathic pain after nerve injury. In the present study, we aim to investigate autophagy flux and the role of the mTOR pathway on spinal cells autophagy activation in neuropathic pain induced by SNL in rats that received SAHA treatment. Autophagy-related proteins and mTOR or its active form were assessed by using western blot, immunohistochemistry, double immunofluorescence staining and transmission electron microscopy (TEM). We found that SAHA decreased the paw mechanical withdrawal threshold (PMWT) of the lower compared with SNL. Autophagy flux was mainly disrupted in the astrocytes and neuronal cells of the spinal cord dorsal horn on postsurgical day 28 and was reversed by daily intrathecal injection of SAHA (n = 100 nmol/day or n = 200 nmol/day). SAHA also decreased mTOR and phosphorylated mTOR (p-mTOR) expression, especially p-mTOR expression in astrocytes and neuronal cells of the spinal dorsal horn. These results suggest that SAHA attenuates neuropathic pain and contributes to autophagy flux in astrocytes and neuronal cells of the spinal dorsal horn via the mTOR signaling pathway.
Collapse
Affiliation(s)
- Xiang-Lan Feng
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, No. 169 Donghu Rd, Wuhan, 430071, Hubei, China
| | - Hong-Bo Deng
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, No. 169 Donghu Rd, Wuhan, 430071, Hubei, China
| | - Zheng-Gang Wang
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, No. 169 Donghu Rd, Wuhan, 430071, Hubei, China
| | - Yun Wu
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, No. 169 Donghu Rd, Wuhan, 430071, Hubei, China
| | - Jian-Juan Ke
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, No. 169 Donghu Rd, Wuhan, 430071, Hubei, China
| | - Xiao-Bo Feng
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, No. 169 Donghu Rd, Wuhan, 430071, Hubei, China.
| |
Collapse
|
39
|
Packiasabapathy S, Sadhasivam S. Gender, genetics, and analgesia: understanding the differences in response to pain relief. J Pain Res 2018; 11:2729-2739. [PMID: 30519077 PMCID: PMC6235329 DOI: 10.2147/jpr.s94650] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Genetic variations and gender contribute significantly to the large interpatient variations in opioid-related serious adverse effects and differences in pain relief with other analgesics. Opioids are the most commonly used analgesics to relieve moderate-to-severe postoperative pain. Narrow therapeutic index and unexplained large interpatient variations in opioid-related serious adverse effects and analgesia negatively affect optimal perioperative outcomes. In surgical, experimental, chronic, and neuropathic pain models, females have been reported to have more pain than males. This review focuses on literature evidence of differences in pain relief due to multiple genetic variations and gender of the patient.
Collapse
Affiliation(s)
- Senthil Packiasabapathy
- Department of Anesthesia, Riley Hospital for Children at Indiana University Health, Indianapolis, IN, USA,
| | - Senthilkumar Sadhasivam
- Department of Anesthesia, Riley Hospital for Children at Indiana University Health, Indianapolis, IN, USA,
| |
Collapse
|
40
|
Li F, Xue Z, Yuan Y, Huang S, Fan Y, Zhu X, Wei L. Upregulation of CXCR4 through promoter demethylation contributes to inflammatory hyperalgesia in rats. CNS Neurosci Ther 2018; 24:947-956. [PMID: 29577638 PMCID: PMC6489799 DOI: 10.1111/cns.12845] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 02/13/2018] [Accepted: 02/20/2018] [Indexed: 01/27/2023] Open
Abstract
AIM AND METHODS Chronic pain associated with inflammation is a common clinical problem, and the underlying mechanisms yet are incompletely defined. DNA methylation has been implicated in the pathogenesis of chronic pain. However, the specific genes regulated by DNA methylation under inflammatory pain condition remain largely unknown. Here, we investigated how chemokine receptor CXCR4 expression is regulated by DNA methylation and how it contributes to inflammatory pain induced by complete Freund's adjuvant (CFA) in rats. RESULTS Intraplantar injection of CFA could not only induce significant hyperalgesia in rats, but also significantly increase the expression of CXCR4 mRNA and protein in the dorsal root ganglion (DRG). Intrathecal injection of CXCR4 antagonist AMD3100 significantly relieved hyperalgesia in inflammatory rats in a time- and dose-dependent manner. Bisulfite sequencing and methylation-specific PCR demonstrate that CFA injection led to a significant demethylation of CpG island at CXCR4 gene promoter. Consistently, the expression of DNMT3b was significantly downregulated after CFA injection. Online software prediction reveals three binding sites of p65 in the CpG island of CXCR4 gene promoter, which has confirmed by the chromatin immunoprecipitation assay, CFA treatment significantly increases the recruitment of p65 to CXCR4 gene promoter. Inhibition of NF-kB signaling using p65 inhibitor pyrrolidine dithiocarbamate significantly prevented the increases of the CXCR4 expression. CONCLUSION Upregulation of CXCR4 expression due to promoter demethylation followed by increased recruitment of p65 to promoter of CXCR4 gene contributes to inflammatory hyperalgesia. These findings provide a theoretical basis for the treatment of chronic pain from an epigenetic perspective.
Collapse
Affiliation(s)
- Feng Li
- Department of AnesthesiologyThe First People's Hospital of YanchengYanchengJiangsuChina
| | - Zhou‐Ya Xue
- Department of AnesthesiologyThe First People's Hospital of YanchengYanchengJiangsuChina
| | - Yuan Yuan
- Department of OtolaryngologyThe First People's Hospital of YanchengYanchengJiangsuChina
| | - Sai‐Sai Huang
- Department of AnesthesiologyAffiliated Hospital of Nantong UniversityNantonChina
| | - Yi‐Hui Fan
- Department of ImmunologySchool of MedicineNantong UniversityNantongChina
| | - Xiang Zhu
- Department of AnesthesiologyAffiliated Hospital of Nantong UniversityNantonChina
| | - Lei Wei
- Department of AnesthesiologySuzhou Municipal Hospital Affiliated to Nanjing Medical UniversitySuzhouJiangsuChina
| |
Collapse
|
41
|
Liang L, Tao YX. Expression of acetyl-histone H3 and acetyl-histone H4 in dorsal root ganglion and spinal dorsal horn in rat chronic pain models. Life Sci 2018; 211:182-188. [PMID: 30236868 DOI: 10.1016/j.lfs.2018.09.029] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 09/07/2018] [Accepted: 09/16/2018] [Indexed: 02/07/2023]
Abstract
AIMS Histone acetylation and deacetylation are two histone posttranslational modifications that are usually controlled by histone acetyltransferases (HATs) and histone deacetylases (HDACs). Although HATs or HDACs Inhibitors could relieve pain hypersensitivities in chronic pain animal models, it is not clear on the expression of global histone acetylation in the dorsal root ganglion (DRG) or spinal dorsal horn in chronic pain conditions. MAIN METHODS A spinal nerve ligation (SNL)-induced neuropathic pain model and a complete Freund's adjuvant (CFA)-induced inflammatory pain model in rats were used to examine the expression of total acetyl-histone H3 (AcH3) and total acetyl-histone H4 (AcH4) by immunofluorescence or western blot. KEY FINDINGS AcH3 and AcH4 not only localized in neuronal nuclei, but also in nuclei of glial cells in the DRG. Unilateral SNL induced the increase of AcH3 and AcH4 expression in the injured lumbar 5 (L5) DRG, but not in the uninjured L5 DRG or the spinal dorsal horn, while unilateral intraplantar injection of CFA increased AcH3 and AcH4 expression in the ipsilateral L4/5 spinal dorsal horn, but not in the L4/5 DRG. SIGNIFICANCE These results provide morphological evidence for global histone acetylation expression in the DRG and spinal cord and indicate the differential expression in the DRG and spinal dorsal horn in different chronic pain models. More precise epigenetic mechanisms of histone acetylation on the target genes need to be revealed.
Collapse
Affiliation(s)
- Lingli Liang
- Department of Anesthesiology, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, NJ, USA; Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi 710061, PR China; Key Laboratory of Environment and Genes Related to Diseases (Xi'an Jiaotong University), Ministry of Education, Beijing, PR China.
| | - Yuan-Xiang Tao
- Department of Anesthesiology, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, NJ, USA; Department of Cell Biology & Molecular Medicine, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, NJ, USA; Department of Physiology, Pharmacology & Neuroscience, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, NJ, USA
| |
Collapse
|
42
|
|
43
|
Penas C, Navarro X. Epigenetic Modifications Associated to Neuroinflammation and Neuropathic Pain After Neural Trauma. Front Cell Neurosci 2018; 12:158. [PMID: 29930500 PMCID: PMC5999732 DOI: 10.3389/fncel.2018.00158] [Citation(s) in RCA: 84] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Accepted: 05/22/2018] [Indexed: 12/20/2022] Open
Abstract
Accumulating evidence suggests that epigenetic alterations lie behind the induction and maintenance of neuropathic pain. Neuropathic pain is usually a chronic condition caused by a lesion, or pathological change, within the nervous system. Neuropathic pain appears frequently after nerve and spinal cord injuries or diseases, producing a debilitation of the patient and a decrease of the quality of life. At the cellular level, neuropathic pain is the result of neuronal plasticity shaped by an increase in the sensitivity and excitability of sensory neurons of the central and peripheral nervous system. One of the mechanisms thought to contribute to hyperexcitability and therefore to the ontogeny of neuropathic pain is the altered expression, trafficking, and functioning of receptors and ion channels expressed by primary sensory neurons. Besides, neuronal and glial cells, such as microglia and astrocytes, together with blood borne macrophages, play a critical role in the induction and maintenance of neuropathic pain by releasing powerful neuromodulators such as pro-inflammatory cytokines and chemokines, which enhance neuronal excitability. Altered gene expression of neuronal receptors, ion channels, and pro-inflammatory cytokines and chemokines, have been associated to epigenetic adaptations of the injured tissue. Within this review, we discuss the involvement of these epigenetic changes, including histone modifications, DNA methylation, non-coding RNAs, and alteration of chromatin modifiers, that have been shown to trigger modification of nociception after neural lesions. In particular, the function on these processes of EZH2, JMJD3, MeCP2, several histone deacetylases (HDACs) and histone acetyl transferases (HATs), G9a, DNMT, REST and diverse non-coding RNAs, are described. Despite the effort on developing new therapies, current treatments have only produced limited relief of this pain in a portion of patients. Thus, the present review aims to contribute to find novel targets for chronic neuropathic pain treatment.
Collapse
Affiliation(s)
- Clara Penas
- Institut de Neurociències, Departament de Biologia Cellular, Fisiologia i Immunologia, Universitat Autònoma de Barcelona, Barcelona, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas, Madrid, Spain
| | - Xavier Navarro
- Institut de Neurociències, Departament de Biologia Cellular, Fisiologia i Immunologia, Universitat Autònoma de Barcelona, Barcelona, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas, Madrid, Spain
| |
Collapse
|
44
|
GluN2B/CaMKII mediates CFA-induced hyperalgesia via HDAC4-modified spinal COX2 transcription. Neuropharmacology 2018; 135:536-546. [DOI: 10.1016/j.neuropharm.2018.03.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Revised: 02/27/2018] [Accepted: 03/12/2018] [Indexed: 12/15/2022]
|
45
|
Choi G, Yang TJ, Yoo S, Choi SI, Lim JY, Cho PS, Hwang SW. TRPV4-Mediated Anti-nociceptive Effect of Suberanilohydroxamic Acid on Mechanical Pain. Mol Neurobiol 2018; 56:444-453. [PMID: 29707744 DOI: 10.1007/s12035-018-1093-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Accepted: 04/19/2018] [Indexed: 11/29/2022]
Abstract
Biological effects of suberanilohydroxamic acid (SAHA) have mainly been observed in the context of tumor suppression via epigenetic mechanisms, but other potential outcomes from its use have also been proposed in different fields such as pain modulation. Here, we tried to understand whether SAHA modulates specific pain modalities by a non-epigenetic unknown mechanism. From 24 h Complete Freund's Adjuvant (CFA)-inflamed hind paws of mice, mechanical and thermal inflammatory pain indices were collected with or without immediate intraplantar injection of SAHA. To examine the action of SAHA on sensory receptor-specific pain, transient receptor potential (TRP) ion channel-mediated pain indices were collected in the same manner of intraplantar treatment. Activities of primarily cultured sensory neurons and heterologous cells transfected with TRP channels were monitored to determine the molecular mechanism underlying the pain-modulating effect of SAHA. As a result, immediate and localized pretreatment with SAHA, avoiding an epigenetic intervention, acutely attenuated mechanical inflammatory pain and receptor-specific pain evoked by injection of a TRP channel agonist in animal models. We show that a component of the mechanisms involves TRPV4 inhibition based on in vitro intracellular Ca2+ imaging and electrophysiological assessments with heterologous expression systems and cultured sensory neurons. Taken together, the present study provides evidence of a novel off-target action and its mechanism of SAHA in its modality-specific anti-nociceptive effect and suggests the utility of this compound for pharmacological modulation of pain.
Collapse
Affiliation(s)
- Geunyeol Choi
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul, 02841, South Korea
| | - Tae-Jin Yang
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul, 02841, South Korea
| | - Sungjae Yoo
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul, 02841, South Korea
| | - Seung-In Choi
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul, 02841, South Korea
| | - Ji Yeon Lim
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul, 02841, South Korea
| | - Pyung Sun Cho
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul, 02841, South Korea
| | - Sun Wook Hwang
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul, 02841, South Korea. .,Department of Physiology, Korea University College of Medicine, Seoul, 02841, South Korea.
| |
Collapse
|
46
|
Nuñez-Badinez P, Sepúlveda H, Diaz E, Greffrath W, Treede RD, Stehberg J, Montecino M, van Zundert B. Variable transcriptional responsiveness of the P2X3 receptor gene during CFA-induced inflammatory hyperalgesia. J Cell Biochem 2018; 119:3922-3935. [PMID: 29219199 DOI: 10.1002/jcb.26534] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Accepted: 10/03/2017] [Indexed: 12/15/2022]
Abstract
The purinergic receptor P2X3 (P2X3-R) plays important roles in molecular pathways of pain, and reduction of its activity or expression effectively reduces chronic inflammatory and neuropathic pain sensation. Inflammation, nerve injury, and cancer-induced pain can increase P2X3-R mRNA and/or protein levels in dorsal root ganglia (DRG). However, P2X3-R expression is unaltered or even reduced in other pain studies. The reasons for these discrepancies are unknown and might depend on the applied traumatic intervention or on intrinsic factors such as age, gender, genetic background, and/or epigenetics. In this study, we sought to get insights into the molecular mechanisms responsible for inflammatory hyperalgesia by determining P2X3-R expression in DRG neurons of juvenile male rats that received a Complete Freund's Adjuvant (CFA) bilateral paw injection. We demonstrate that all CFA-treated rats showed inflammatory hyperalgesia, however, only a fraction (14-20%) displayed increased P2X3-R mRNA levels, reproducible across both sides. Immunostaining assays did not reveal significant increases in the percentage of P2X3-positive neurons, indicating that increased P2X3-R at DRG somas is not critical for inducing inflammatory hyperalgesia in CFA-treated rats. Chromatin immunoprecipitation (ChIP) assays showed a correlated (R2 = 0.671) enrichment of the transcription factor Runx1 and the epigenetic active mark histone H3 acetylation (H3Ac) at the P2X3-R gene promoter in a fraction of the CFA-treated rats. These results suggest that animal-specific increases in P2X3-R mRNA levels are likely associated with the genetic/epigenetic context of the P2X3-R locus that controls P2X3-R gene transcription by recruiting Runx1 and epigenetic co-regulators that mediate histone acetylation.
Collapse
Affiliation(s)
- Paulina Nuñez-Badinez
- Faculty of Biological Sciences and Faculty of Medicine, Center for Biomedical Research, Universidad Andres Bello, Santiago, Chile
| | - Hugo Sepúlveda
- Faculty of Biological Sciences and Faculty of Medicine, Center for Biomedical Research, Universidad Andres Bello, Santiago, Chile.,FONDAP Center for Genome Regulation, Santiago, Chile
| | - Emilio Diaz
- Faculty of Biological Sciences and Faculty of Medicine, Center for Biomedical Research, Universidad Andres Bello, Santiago, Chile
| | - Wolfgang Greffrath
- Centre for Biomedicine and Medical Technology Mannheim, Heidelberg University, Mannheim, Germany
| | - Rolf-Detlef Treede
- Centre for Biomedicine and Medical Technology Mannheim, Heidelberg University, Mannheim, Germany
| | - Jimmy Stehberg
- Faculty of Biological Sciences and Faculty of Medicine, Center for Biomedical Research, Universidad Andres Bello, Santiago, Chile
| | - Martin Montecino
- Faculty of Biological Sciences and Faculty of Medicine, Center for Biomedical Research, Universidad Andres Bello, Santiago, Chile.,FONDAP Center for Genome Regulation, Santiago, Chile
| | - Brigitte van Zundert
- Faculty of Biological Sciences and Faculty of Medicine, Center for Biomedical Research, Universidad Andres Bello, Santiago, Chile
| |
Collapse
|
47
|
Histone deacetylase 5 (HDAC5) regulates neuropathic pain through SRY-related HMG-box 10 (SOX10)-dependent mechanism in mice. Pain 2017; 159:526-539. [DOI: 10.1097/j.pain.0000000000001125] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
48
|
Liao YH, Wang J, Wei YY, Zhang T, Zhang Y, Zuo ZF, Teng XY, Li YQ. Histone deacetylase 2 is involved in µ‑opioid receptor suppression in the spinal dorsal horn in a rat model of chronic pancreatitis pain. Mol Med Rep 2017; 17:2803-2810. [PMID: 29257262 PMCID: PMC5783494 DOI: 10.3892/mmr.2017.8245] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2016] [Accepted: 04/24/2017] [Indexed: 12/12/2022] Open
Abstract
Chronic pain occurs in ~85–90% of chronic pancreatitis (CP) patients. However, as the pathogenesis of CP pain remains to be fully understood, the current therapies for CP pain remain inadequate. Emerging evidence has suggested that the epigenetic modulations of genes are involved in chronic pain. In the present study, intrapancreatic trinitrobenzene sulfonic acid infusions were used to establish a CP model in rats. Mechanical allodynia was measured with von Frey filaments. Immunofluorescent staining analysis was used to observe the expression changes of histone deacetylase 2 (HDAC2) and µ-opioid receptor (MOR), and intrathecal administration of the selective HDAC2 inhibitor AR-42 was used to assess the underlying mechanisms. The expression levels of c-Jun N-terminal kinase (JNK) in the thoracic spinal cord were detected by western blotting, and the mRNA expression levels of interleukin (IL)1-β, IL-6 and tumor necrosis factor (TNF)-α were detected by reverse transcription-quantitative polymerase chain reaction. The results demonstrated that HDAC2 expression was upregulated during the course of CP induction, while MOR activity in the thoracic spinal dorsal horn was significantly suppressed. Intrathecal infusion of AR-42 significantly attenuated CP-induced mechanical allodynia, with rescued MOR activity. Additionally, HDAC2 facilitated the release of inflammatory cytokines, including IL-1β, IL-6 and TNF-α. These results suggested that the underlying mechanisms of HDAC2 regulating MOR activity under CP induction may occur via promoting the release of inflammatory cytokines, thus activating the JNK signaling pathway. The present study suggested that the epigenetic-regulated disturbance of MOR is dependent on the endogenous analgesia system in CP, which may a provide novel therapeutic strategy for treating pain in CP.
Collapse
Affiliation(s)
- Yong-Hui Liao
- Department of Anatomy and K.K. Leung Brain Research Centre, Preclinical School of Medicine, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Jian Wang
- Department of Anatomy and K.K. Leung Brain Research Centre, Preclinical School of Medicine, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Yan-Yan Wei
- Department of Anatomy and K.K. Leung Brain Research Centre, Preclinical School of Medicine, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Ting Zhang
- Department of Anatomy and K.K. Leung Brain Research Centre, Preclinical School of Medicine, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Yong Zhang
- Department of Anatomy and K.K. Leung Brain Research Centre, Preclinical School of Medicine, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Zhong-Fu Zuo
- Department of Anatomy, Histology and Embryology, Liaoning Medical University, Jinzhou, Liaoning 121000, P.R. China
| | - Xiao-Yu Teng
- Department of Anatomy and K.K. Leung Brain Research Centre, Preclinical School of Medicine, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Yun-Qing Li
- Department of Anatomy and K.K. Leung Brain Research Centre, Preclinical School of Medicine, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| |
Collapse
|
49
|
Zammataro M, Merlo S, Barresi M, Parenti C, Hu H, Sortino MA, Chiechio S. Chronic Treatment with Fluoxetine Induces Sex-Dependent Analgesic Effects and Modulates HDAC2 and mGlu2 Expression in Female Mice. Front Pharmacol 2017; 8:743. [PMID: 29104538 PMCID: PMC5654865 DOI: 10.3389/fphar.2017.00743] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Accepted: 10/02/2017] [Indexed: 12/21/2022] Open
Abstract
Gender and sex differences in pain recognition and drug responses have been reported in clinical trials and experimental models of pain. Among antidepressants, contradictory results have been observed in patients treated with selective serotonin reuptake inhibitors (SSRIs). This study evaluated sex differences in response to the SSRI fluoxetine after chronic administration in the mouse formalin test. Adult male and female CD1 mice were intraperitoneally injected with fluoxetine (10 mg/kg) for 21 days and subjected to pain assessment. Fluoxetine treatment reduced the second phase of the formalin test only in female mice without producing behavioral changes in males. We also observed that fluoxetine was able to specifically increase the expression of metabotropic glutamate receptor type-2 (mGlu2) in females. Also a reduced expression of the epigenetic modifying enzyme, histone deacetylase 2 (HDAC2), in dorsal root ganglia (DRG) and dorsal horn (DH) together with an increase histone 3 acetylation (H3) level was observed in females but not in males. With this study we provide evidence that fluoxetine induces sex specific changes in HDAC2 and mGlu2 expression in the DH of the spinal cord and in DRGs and suggests a molecular explanation for the analgesic effects in female mice.
Collapse
Affiliation(s)
- Magda Zammataro
- Department of Drug Sciences, University of Catania, Catania, Italy
| | - Sara Merlo
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | | | - Carmela Parenti
- Department of Drug Sciences, University of Catania, Catania, Italy
| | - Huijuan Hu
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, PA, United States
| | - Maria A Sortino
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Santina Chiechio
- Department of Drug Sciences, University of Catania, Catania, Italy
| |
Collapse
|
50
|
Notartomaso S, Mascio G, Bernabucci M, Zappulla C, Scarselli P, Cannella M, Imbriglio T, Gradini R, Battaglia G, Bruno V, Nicoletti F. Analgesia induced by the epigenetic drug, L-acetylcarnitine, outlasts the end of treatment in mouse models of chronic inflammatory and neuropathic pain. Mol Pain 2017; 13:1744806917697009. [PMID: 28326943 PMCID: PMC5407675 DOI: 10.1177/1744806917697009] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Background L-acetylcarnitine, a drug marketed for the treatment of chronic pain, causes analgesia by epigenetically up-regulating type-2 metabotropic glutamate (mGlu2) receptors in the spinal cord. Because the epigenetic mechanisms are typically long-lasting, we hypothesized that analgesia could outlast the duration of L-acetylcarnitine treatment in models of inflammatory and neuropathic pain. Results A seven-day treatment with L-acetylcarnitine (100 mg/kg, once a day, i.p.) produced an antiallodynic effect in the complete Freund adjuvant mouse model of chronic inflammatory pain. L-Acetylcarnitine-induced analgesia persisted for at least 14 days after drug withdrawal. In contrast, the analgesic effect of pregabalin, amitryptiline, ceftriaxone, and N-acetylcysteine disappeared seven days after drug withdrawal. L-acetylcarnitine treatment enhanced mGlu2/3 receptor protein levels in the dorsal region of the spinal cord. This effect also persisted for two weeks after drug withdrawal and was associated with increased levels of acetylated histone H3 bound to the Grm2 gene promoter in the dorsal root ganglia. A long-lasting analgesic effect of L-acetylcarnitine was also observed in mice subjected to chronic constriction injury of the sciatic nerve. In these animals, a 14-day treatment with pregabalin, amitryptiline, tramadol, or L-acetylcarnitine produced a significant antiallodynic effect, with pregabalin displaying the greatest efficacy. In mice treated with pregabalin, tramadol or L-acetylcarnitine the analgesic effect was still visible 15 days after the end of drug treatment. However, only in mice treated with L-acetylcarnitine analgesia persisted 37 days after drug withdrawal. This effect was associated with an increase in mGlu2/3 receptor protein levels in the dorsal horns of the spinal cord. Conclusions Our findings suggest that L-acetylcarnitine has the unique property to cause a long-lasting analgesic effect that might reduce relapses in patients suffering from chronic pain.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | - Roberto Gradini
- 1 I.R.C.C.S. Neuromed, Pozzilli, Italy.,2 Department of Experimental Medicine, Sapienza University, Rome, Italy
| | | | - Valeria Bruno
- 1 I.R.C.C.S. Neuromed, Pozzilli, Italy.,3 Department of Physiology and Pharmacology, Sapienza University, Rome, Italy
| | - Ferdinando Nicoletti
- 1 I.R.C.C.S. Neuromed, Pozzilli, Italy.,3 Department of Physiology and Pharmacology, Sapienza University, Rome, Italy
| |
Collapse
|