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Dangi A, Sharma SS. Pharmacological agents targeting transient receptor potential (TRP) channels in neuropathic pain: Preclinical and clinical status. Eur J Pharmacol 2024; 980:176845. [PMID: 39067564 DOI: 10.1016/j.ejphar.2024.176845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Revised: 06/19/2024] [Accepted: 07/23/2024] [Indexed: 07/30/2024]
Abstract
Neuropathic pain generally affects 7-10% population worldwide and an estimated ∼1 in every 20 individuals in western countries suffer and burden to society. The most limiting factor with existing therapies includes dose escalation issues, off-target side effects and poor translation of randomized trials into clinical practice. Neuropathic pain is a broad term that comprises direct injury/damage to the central and/or peripheral nervous system, leads to maladaptive changes in neuronal as well as in non-neuronal cells, which further contributes to the spontaneous pain, sensory and motor deficit along with altered sensitivity towards the noxious as well as non-noxious stimulus. Transient receptor potential (TRP) channels are polymodal, non-specific cation channels that operate as biosensors to various mechanical and chemical stimuli, including hyperosmolarity, shear stress, heat, mechanical stretch, extracellular ATP, and other products of inflammation. Modulation of these channels leads to various physiological and pathophysiological manifestations at molecular and cellular levels, leading to diseases including neuropathic pain. There are several molecules targeting TRP channels for neuropathic pain in pre-clinical studies, clinical trials and in the market. This review highlights the critical involvement of various pharmacological modulators for TRP channels targeting neuropathic pain and their possible outcomes to harness the therapeutic potential of TRP channels.
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Affiliation(s)
- Ashish Dangi
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, S.A.S. Nagar, Mohali, Punjab, India
| | - Shyam Sunder Sharma
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, S.A.S. Nagar, Mohali, Punjab, India.
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Wu F, Dang B, Hu L, Zhu S, Liu Z, Cao X, Li Z, Wang C, Lin C. Lycium barbarum polysaccharide inhibits blue-light-induced skin oxidative damage with the involvement of mitophagy. Photochem Photobiol 2024; 100:604-621. [PMID: 37814779 DOI: 10.1111/php.13863] [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: 07/25/2023] [Revised: 09/21/2023] [Accepted: 09/24/2023] [Indexed: 10/11/2023]
Abstract
Although blue light can damage the skin to a certain extent, the pathogenesis of its damage remains still unclear. The available evidence suggests that oxidative stress may be the main cause of its damage. Lycium barbarum polysaccharide (LBP) has antioxidative effects in a variety of cells. In this paper, we investigated the protective role of LBP and its mechanism of action related to mitophagy in blue-light-damaged skin cells. The findings indicated that in HaCaT cells and mouse skin, LBP pretreatment was effective in reducing blue-light-induced apoptosis and ameliorating the elevated level of cellular autophagy/mitophagy caused by excessive blue light exposure. The markers reactive oxygen species (ROS), superoxide dismutase (SOD), and malondialdehyde (MDA) were used to assess oxidative stress. LBP could effectively inhibit blue-light-induced oxidative stress. It was also found that blue light exposure caused mitochondrial dysfunction in HaCaT cells, including increased intracellular calcium ion levels and decreased mitochondrial membrane potential. LBP pretreatment significantly relieved mitochondrial dysfunction in HaCaT cells. These findings imply that LBP pretreatment protects skin cells from damage induced by blue light irradiation and that mitophagy may be a significant factor in skin photodamage.
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Affiliation(s)
- Fen Wu
- School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Bingrong Dang
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, China
| | - Liming Hu
- School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Sen Zhu
- School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Zuohao Liu
- School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Xinhui Cao
- School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Zhen Li
- School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Chunming Wang
- School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Changjun Lin
- School of Life Sciences, Lanzhou University, Lanzhou, China
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Zhang Y, Lu Q, Hu H, Yang C, Zhao Q. Esketamine alleviates hypoxia/reoxygenation injury of cardiomyocytes by regulating TRPV1 expression and inhibiting intracellular Ca 2+ concentration. Clinics (Sao Paulo) 2024; 79:100363. [PMID: 38692008 PMCID: PMC11070684 DOI: 10.1016/j.clinsp.2024.100363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Accepted: 04/07/2024] [Indexed: 05/03/2024] Open
Abstract
OBJECTIVE This study aimed to investigate the effect of Esketamine (ESK) on the Hypoxia/Reoxygenation (H/R) injury of cardiomyocytes by regulating TRPV1 and inhibiting the concentration of intracellular Ca2+. METHODS The H/R injury model of H9c2 cardiomyocytes was established after 4h hypoxia and 6h reoxygenation. H9c2 cells were treated with different concentrations of ESK or TRPV1 agonist capsaicin (10 μM) or TRPV1 inhibitor capsazepine (1 μM). Cell viability was detected by CCK-8 method, and apoptosis by flow cytometry. Intracellular Ca2+ concentration was evaluated by Fluo-4 AM. LDH, MDA, SOD, and GSH-Px were detected with corresponding commercial kits. TRPV1 and p-TRPV1 proteins were detected by Western blot. RESULTS After H/R, H9c2 cell viability decreased, apoptosis increased, intracellular Ca2+ concentration increased, LDH and MDA levels increased, SOD and GSH-Px levels decreased, and p-TRPV1 expression increased. ESK treatment rescued these changes induced by H/R. After up-regulating TRPV1, the protective effect of ESK on H/R injury of H9c2 cells was weakened, while down-regulating TRPV1 could further protect against H/R injury. CONCLUSION ESK alleviates H/R injury of cardiomyocytes by regulating TRPV1 expression and inhibiting intracellular Ca2+ concentration.
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Affiliation(s)
- Ying Zhang
- Department of Anesthesiology, The First Affiliated Hospital of Bengbu Medical College, Bengbu City, Anhui Province, China
| | - QuanMei Lu
- Department of Anesthesiology, The First Affiliated Hospital of Bengbu Medical College, Bengbu City, Anhui Province, China
| | - HanChun Hu
- Department of Anesthesiology, The First Affiliated Hospital of Bengbu Medical College, Bengbu City, Anhui Province, China
| | - ChunChen Yang
- Department of Anesthesiology, The First Affiliated Hospital of Bengbu Medical College, Bengbu City, Anhui Province, China
| | - QiHong Zhao
- Department of Anesthesiology, The Second Affiliated Hospital of Bengbu Medical College, Bengbu City, Anhui Province, China.
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Gargiulo E, Moriello AS, Benetti E, Pagni L, Arnoldi L, De Petrocellis L, Chianese G, Vitale RM, Taglialatela-Scafati O. Phytochemical Characterization and TRPA1/TRPM8 Modulation Profile of the Cannabigerol-Rich Cannabis sativa L. Chemotype IV. JOURNAL OF NATURAL PRODUCTS 2024; 87:722-732. [PMID: 38408345 DOI: 10.1021/acs.jnatprod.3c00831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
The first detailed phytochemical analysis of the cannabigerol (CBG)-rich chemotype IV of Cannabis sativa L. resulted in the isolation of the expected cannabigerolic acid/cannabigerol (CBGA/CBG) and cannabidiolic acid/cannabidiol (CBDA/CBD) and of nine new phytocannabinoids (5-13), which were fully characterized by HR-ESIMS and 1D and 2D NMR. These included mono- or dihydroxylated CBGA/CBG analogues, a congener with a truncated side chain (10), cyclocannabigerol B (11), and the CBD derivatives named cannabifuranols (12 and 13). Cyclocannabigerol B and cannabifuranols are characterized by a novel phytocannabinoid structural architecture. The isolated phytocannabinoids were assayed on the receptor channels TRPA1 and TRPM8, unveiling a potent dual TRPA1 agonist/TRPM8 antagonist profile for compounds 6, 7, and 14. Chiral separation of the two enantiomers of 5 resulted in the discovery of a synergistic effect of the two enantiomers on TRPA1.
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Affiliation(s)
- Ernesto Gargiulo
- Department of Pharmacy, School of Medicine and Surgery, University of Naples Federico II, Via D. Montesano 49, 80131 Napoli, Italy
| | - Aniello Schiano Moriello
- Institute of Biomolecular Chemistry, National Research Council (ICB-CNR), Via Campi Flegrei 34, 80078, Pozzuoli (NA), Italy
- Epitech Group SpA, Saccolongo, 35100 Padova, Italy
| | | | - Luca Pagni
- R&D, Indena SpA, Via Don Minzoni, 6, 20049 Settala (MI), Italy
| | - Lolita Arnoldi
- R&D, Indena SpA, Via Don Minzoni, 6, 20049 Settala (MI), Italy
| | - Luciano De Petrocellis
- Institute of Biomolecular Chemistry, National Research Council (ICB-CNR), Via Campi Flegrei 34, 80078, Pozzuoli (NA), Italy
| | - Giuseppina Chianese
- Department of Pharmacy, School of Medicine and Surgery, University of Naples Federico II, Via D. Montesano 49, 80131 Napoli, Italy
| | - Rosa Maria Vitale
- Institute of Biomolecular Chemistry, National Research Council (ICB-CNR), Via Campi Flegrei 34, 80078, Pozzuoli (NA), Italy
| | - Orazio Taglialatela-Scafati
- Department of Pharmacy, School of Medicine and Surgery, University of Naples Federico II, Via D. Montesano 49, 80131 Napoli, Italy
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Shi J, Chen X, Zhang Y, Shi T, Zhang R, Zhu S, Zong X, Wang C, Li L. A Stable Cell Line Co-expressing hTRPV1 and GCaMP6s: A Novel Cell-based Assay For High-throughput Screening of hTRPV1 Agonists. Comb Chem High Throughput Screen 2024; 27:298-306. [PMID: 37171000 DOI: 10.2174/1386207326666230511143259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 03/24/2023] [Accepted: 04/03/2023] [Indexed: 05/13/2023]
Abstract
BACKGROUND Transient receptor potential vanilloid-1 (TRPV1) is a non-selective cation channel capable of integrating various noxious chemical and physical stimuli. Recently, human TRPV1 (hTRPV1) has attracted wide attention from researchers because it is closely related to pain, inflammation, temperature perception, and tumors. Our study was aimed at generating a stable cell line co-expressing hTRPV1 receptor and GCaMP6s calcium indicator protein and, based on this, developing high-throughput screening methods for targeting hTRPV1 agonists. METHODS The CHO-hTRPV1-GCaMP6s cell line stably expressing hTRPV1 and GCaMP6s was generated by co-transfection of hTRPV1 and GCaMP6s into Chinese hamster ovary (CHO) cells. The high-throughput screening methods were developed based on detecting the concentration of intracellular calcium ions ([Ca2+]i) by using chemically synthesized dyes and genetically encoded calcium indicator (GECI). Meanwhile, the sensitivity and adaptability of these methods in the evaluation of capsaicinoids were also compared. RESULTS A stable cell line co-expressing hTRPV1 and GCaMP6s was generated and used to establish a functional high-throughput screening assay based on the measurement of [Ca2+]i by fluorometric imaging plate reader (FLIPR). The GECI exhibited a higher sensitivity and applicability than that of chemically synthesized dyes in detecting the changes in [Ca2+]i induced by capsaicin. The CHO-hTRPV1-GCaMP6s cell line was further used to detect the dose-dependent relationships of various hTRPV1 agonists (comparison of EC50 values: capsaicin (39 ± 1.67 nM) < nonivamide (67 ± 3.05 nM) < piperine (9222 ± 1851 nM)), and this order is consistent with the pharmacological properties of hTRPV1 activation by these agonists. CONCLUSION The successful establishment of the CHO-hTRPV1-GCaMP6s cell lines and their application in high-throughput screening of hTRPV1 agonists.
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Affiliation(s)
- Jingjing Shi
- Department of Laboratory of Pharmacology, State Key Laboratory of NBC Protection for Civilians, Beijing, 102205, China
| | - Xuejun Chen
- Department of Laboratory of Pharmacology, State Key Laboratory of NBC Protection for Civilians, Beijing, 102205, China
| | - Yi Zhang
- Department of Laboratory of Pharmacology, State Key Laboratory of NBC Protection for Civilians, Beijing, 102205, China
| | - Tong Shi
- Department of Laboratory of Pharmacology, State Key Laboratory of NBC Protection for Civilians, Beijing, 102205, China
| | - Ruihua Zhang
- Department of Laboratory of Pharmacology, State Key Laboratory of NBC Protection for Civilians, Beijing, 102205, China
| | - Siqing Zhu
- Department of Laboratory of Pharmacology, State Key Laboratory of NBC Protection for Civilians, Beijing, 102205, China
| | - Xingxing Zong
- Department of Laboratory of Pharmacology, State Key Laboratory of NBC Protection for Civilians, Beijing, 102205, China
| | - Chen Wang
- Department of Laboratory of Pharmacology, State Key Laboratory of NBC Protection for Civilians, Beijing, 102205, China
| | - Liqin Li
- Department of Laboratory of Pharmacology, State Key Laboratory of NBC Protection for Civilians, Beijing, 102205, China
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Wang S, Wang W, Ye X. Bibliometric Analysis of Global Research on Transient Receptor Potential Vanilloid 1 in the Field of Pain. J Pain Res 2023; 16:1517-1532. [PMID: 37193358 PMCID: PMC10182809 DOI: 10.2147/jpr.s407384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 05/03/2023] [Indexed: 05/18/2023] Open
Abstract
Background Transient Receptor Potential Vanilloid 1 (TRPV1) is a heat-activated cation channel modulated by inflammatory mediators, which is closely related to pain and serves as a potential analgesic target. However, the bibliometric analyses summarizing TRPV1 in the field of pain are scarce. This study aims to summarize the current status of TRPV1 in pain and the potential research direction. Methods Articles regarding TRPV1 in the pain field between 2013 and 2022 were extracted from the Web of Science core collection database on 31 December 2022. Scientometric software (VOSviewer and CiteSpace 6.1.R6) were used to perform bibliometric analysis. This study provided data on the trend of the annual outputs, countries/regions, institutions, journals, authors, co-cited references and keywords. Results A total of 2462 publications related to TRPV1 in the field of pain were extracted from 2013 to 2022, which were written by 12,005 authors of 2304 institutions, 68 countries/regions in 686 journals, with 48,723 citations totally. The number of publications has grown rapidly over the past 10 years. Most publications were from the USA and China; the Seoul Natl Univ was the most active institution; Tominaga M published the most papers and Caterina MJ was the most productive co-cited author; The top-contributing journal was Pain; The most cited references was the article authored by Julius D. "Neuropathic pain", "inflammatory pain", "visceral pain" and "migraine" were the most common types of pain in this field. The mechanism of TRPV1 in pain was one of the main research directions. Conclusion This study presented an overview of the major research directions of TRPV1 in the pain field by bibliometric methods over the past decade. The results could reveal the research trends and the hotspots in the field and provide helpful information for clinical treatments of pain.
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Affiliation(s)
- Sisi Wang
- Center for Rehabilitation Medicine, Rehabilitation & Sports Medicine Research Institute of Zhejiang Province, Department of Rehabilitation Medicine, Zhejiang Provincial People’s Hospital, Affiliated People’s Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, People’s Republic of China
| | - Wen Wang
- Department of Preventive Treatment Center, Quzhou Hospital of Traditional Chinese Medicine, Quzhou, Zhejiang, People’s Republic of China
| | - Xiangming Ye
- Center for Rehabilitation Medicine, Rehabilitation & Sports Medicine Research Institute of Zhejiang Province, Department of Rehabilitation Medicine, Zhejiang Provincial People’s Hospital, Affiliated People’s Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, People’s Republic of China
- Correspondence: Xiangming Ye, Department of Rehabilitation Medicine, Zhejiang Provincial People’s Hospital, 158 Shangtang Road, Gongshu District, Hangzhou City, Zhejiang, People’s Republic of China, Tel +86 571 87692748, Email
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