1
|
Nakamoto K, Tokuyama S. Spinal lipocalin 2 as a factor in the development of central post-stroke pain. Brain Res 2024; 1838:148976. [PMID: 38705557 DOI: 10.1016/j.brainres.2024.148976] [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: 03/04/2024] [Revised: 04/30/2024] [Accepted: 05/02/2024] [Indexed: 05/07/2024]
Abstract
Central poststroke pain (CPSP) is a type of central neuropathic pain whose mechanisms remain unknown. Recently, we showed that activated astrocytes and microglial cells are present in the spinal cord of CPSP model mice. Activated glial cells exacerbate cerebral ischemic pathology by increasing the expression of inflammatory factors. However, the involvement of spinal glial cells in CPSP remains unknown. We hypothesized that spinal glial cell-derived molecules cause hyperexcitability or promoted the development of CPSP. In this study, we identified glial cell-derived factors involved in the development of CPSP using a bilateral common carotid occlusion (BCAO)-induced CPSP mouse model. Male ddY mice were subjected to BCAO for 30 min. The von Frey test assessed mechanical hypersensitivity in the right hind paw of mice. BCAO mice showed hypersensitivity to mechanical stimuli and astrocyte activation in the spinal cord 3 days after treatment. DNA microarray analysis revealed a significant increase in lipocalin 2 (LCN2), is known as neutrophil gelatinase-associated lipocalin, in the superficial dorsal horns of BCAO-induced CPSP model mice. LCN2 colocalized with GFAP, an astrocyte marker. Spinal GFAP-positive cells in BCAO mice co-expressed signal transducer and activator of transcription 3 (STAT3). The increase in the fluorescence intensity of LCN2 and GFAP in BCAO mice was suppressed by intrathecal injection of AG490, an inhibitor of JAK2 and downstream STAT3 activation, or anti-LCN2 antibody. Our findings indicated that LCN2 in spinal astrocytes may be a key molecule and may be partly involved in the development of CPSP.
Collapse
Affiliation(s)
- Kazuo Nakamoto
- Department of Clinical Pharmacy, Faculty of Pharmaceutical Sciences, Kobe Gakuin University, Japan
| | - Shogo Tokuyama
- Department of Clinical Pharmacy, Faculty of Pharmaceutical Sciences, Kobe Gakuin University, Japan.
| |
Collapse
|
2
|
Barnett D, Zimmer TS, Booraem C, Palaguachi F, Meadows SM, Xiao H, Chouchani ET, Orr AG, Orr AL. Mitochondrial complex III-derived ROS amplify immunometabolic changes in astrocytes and promote dementia pathology. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.08.19.608708. [PMID: 39229090 PMCID: PMC11370371 DOI: 10.1101/2024.08.19.608708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 09/05/2024]
Abstract
Neurodegenerative disorders alter mitochondrial functions, including the production of reactive oxygen species (ROS). Mitochondrial complex III (CIII) generates ROS implicated in redox signaling, but its triggers, targets, and disease relevance are not clear. Using site-selective suppressors and genetic manipulations together with mitochondrial ROS imaging and multiomic profiling, we found that CIII is the dominant source of ROS production in astrocytes exposed to neuropathology-related stimuli. Astrocytic CIII-ROS production was dependent on nuclear factor-κB (NF-κB) and the mitochondrial sodium-calcium exchanger (NCLX) and caused oxidation of select cysteines within immune and metabolism-associated proteins linked to neurological disease. CIII-ROS amplified metabolomic and pathology-associated transcriptional changes in astrocytes, with STAT3 activity as a major mediator, and facilitated neuronal toxicity in a non-cell-autonomous manner. As proof-of-concept, suppression of CIII-ROS in mice decreased dementia-linked tauopathy and neuroimmune cascades and extended lifespan. Our findings establish CIII-ROS as an important immunometabolic signal transducer and tractable therapeutic target in neurodegenerative disease.
Collapse
Affiliation(s)
- Daniel Barnett
- Helen and Robert Appel Alzheimer's Disease Research Institute, Weill Cornell Medicine, New York, NY
- Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, NY
- Neuroscience Graduate Program, Weill Cornell Medicine, New York, NY
| | - Till S Zimmer
- Helen and Robert Appel Alzheimer's Disease Research Institute, Weill Cornell Medicine, New York, NY
- Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, NY
| | - Caroline Booraem
- Helen and Robert Appel Alzheimer's Disease Research Institute, Weill Cornell Medicine, New York, NY
- Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, NY
- Neuroscience Graduate Program, Weill Cornell Medicine, New York, NY
| | - Fernando Palaguachi
- Helen and Robert Appel Alzheimer's Disease Research Institute, Weill Cornell Medicine, New York, NY
- Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, NY
| | - Samantha M Meadows
- Helen and Robert Appel Alzheimer's Disease Research Institute, Weill Cornell Medicine, New York, NY
- Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, NY
- Neuroscience Graduate Program, Weill Cornell Medicine, New York, NY
| | - Haopeng Xiao
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA
- Department of Cell Biology, Harvard Medical School, Boston, MA
| | - Edward T Chouchani
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA
- Department of Cell Biology, Harvard Medical School, Boston, MA
| | - Anna G Orr
- Helen and Robert Appel Alzheimer's Disease Research Institute, Weill Cornell Medicine, New York, NY
- Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, NY
- Neuroscience Graduate Program, Weill Cornell Medicine, New York, NY
| | - Adam L Orr
- Helen and Robert Appel Alzheimer's Disease Research Institute, Weill Cornell Medicine, New York, NY
- Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, NY
- Neuroscience Graduate Program, Weill Cornell Medicine, New York, NY
| |
Collapse
|
3
|
Guo SS, Gong Y, Zhang TT, Su XY, Wu YJ, Yan YX, Cao Y, Song XL, Xie JC, Wu D, Jiang Q, Li Y, Zhao X, Zhu MX, Xu TL, Liu MG. A thalamic nucleus reuniens-lateral septum-lateral hypothalamus circuit for comorbid anxiety-like behaviors in chronic itch. SCIENCE ADVANCES 2024; 10:eadn6272. [PMID: 39150998 PMCID: PMC11328909 DOI: 10.1126/sciadv.adn6272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Accepted: 07/10/2024] [Indexed: 08/18/2024]
Abstract
Chronic itch often clinically coexists with anxiety symptoms, creating a vicious cycle of itch-anxiety comorbidities that are difficult to treat. However, the neuronal circuit mechanisms underlying the comorbidity of anxiety in chronic itch remain elusive. Here, we report anxiety-like behaviors in mouse models of chronic itch and identify γ-aminobutyric acid-releasing (GABAergic) neurons in the lateral septum (LS) as the key player in chronic itch-induced anxiety. In addition, chronic itch is accompanied with enhanced activity and synaptic plasticity of excitatory projections from the thalamic nucleus reuniens (Re) onto LS GABAergic neurons. Selective chemogenetic inhibition of the Re → LS circuit notably alleviated chronic itch-induced anxiety, with no impact on anxiety induced by restraint stress. Last, GABAergic neurons in lateral hypothalamus (LH) receive monosynaptic inhibition from LS GABAergic neurons to mediate chronic itch-induced anxiety. These findings underscore the potential significance of the Re → LS → LH pathway in regulating anxiety-like comorbid symptoms associated with chronic itch.
Collapse
Affiliation(s)
- Su-Shan Guo
- Department of Anesthesiology, Songjiang Hospital and Songjiang Research Institute, Shanghai Key Laboratory of Emotions and Affective Disorders, Shanghai Jiao Tong University School of Medicine, Shanghai 201600, China
- Department of Anatomy and Physiology, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Yu Gong
- Department of Anesthesiology, Songjiang Hospital and Songjiang Research Institute, Shanghai Key Laboratory of Emotions and Affective Disorders, Shanghai Jiao Tong University School of Medicine, Shanghai 201600, China
- Department of Anatomy and Physiology, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Ting-Ting Zhang
- Department of Anesthesiology, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai 200072, China
| | - Xin-Yu Su
- Department of Anatomy and Physiology, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Yan-Jiao Wu
- Department of Anesthesiology, Songjiang Hospital and Songjiang Research Institute, Shanghai Key Laboratory of Emotions and Affective Disorders, Shanghai Jiao Tong University School of Medicine, Shanghai 201600, China
- Department of Anatomy and Physiology, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Yi-Xiao Yan
- Department of Anatomy and Physiology, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Yue Cao
- Department of Anatomy and Physiology, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Xing-Lei Song
- Department of Anesthesiology, Songjiang Hospital and Songjiang Research Institute, Shanghai Key Laboratory of Emotions and Affective Disorders, Shanghai Jiao Tong University School of Medicine, Shanghai 201600, China
- Department of Anatomy and Physiology, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Jian-Cheng Xie
- Department of Anesthesiology, Songjiang Hospital and Songjiang Research Institute, Shanghai Key Laboratory of Emotions and Affective Disorders, Shanghai Jiao Tong University School of Medicine, Shanghai 201600, China
| | - Dehua Wu
- Department of Anesthesiology, Songjiang Hospital and Songjiang Research Institute, Shanghai Key Laboratory of Emotions and Affective Disorders, Shanghai Jiao Tong University School of Medicine, Shanghai 201600, China
| | - Qin Jiang
- Department of Anesthesiology, Songjiang Hospital and Songjiang Research Institute, Shanghai Key Laboratory of Emotions and Affective Disorders, Shanghai Jiao Tong University School of Medicine, Shanghai 201600, China
- Department of Anatomy and Physiology, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Ying Li
- Department of Anesthesiology, Songjiang Hospital and Songjiang Research Institute, Shanghai Key Laboratory of Emotions and Affective Disorders, Shanghai Jiao Tong University School of Medicine, Shanghai 201600, China
- Department of Anatomy and Physiology, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Xuan Zhao
- Department of Anesthesiology, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai 200072, China
| | - Michael X Zhu
- Department of Integrative Biology and Pharmacology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Tian-Le Xu
- Department of Anesthesiology, Songjiang Hospital and Songjiang Research Institute, Shanghai Key Laboratory of Emotions and Affective Disorders, Shanghai Jiao Tong University School of Medicine, Shanghai 201600, China
- Department of Anatomy and Physiology, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
- Shanghai Research Center for Brain Science and Brain-Inspired Intelligence, Shanghai 201210, China
| | - Ming-Gang Liu
- Department of Anatomy and Physiology, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
- Institute of Mental Health and Drug Discovery, Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou, Zhejiang 325000, China
| |
Collapse
|
4
|
Wang C, Yang X, Gao T, Zhao Y, Yang Y, Li X, Yang Y, Yi T, Wang Y, Mi W. Astroglial morphological changes in periaqueductal grey in different pain and itch mice models. Behav Brain Res 2024; 471:115075. [PMID: 38815698 DOI: 10.1016/j.bbr.2024.115075] [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: 12/14/2023] [Revised: 05/14/2024] [Accepted: 05/27/2024] [Indexed: 06/01/2024]
Abstract
BACKGROUND The periaqueductal gray (PAG) plays a well-established pivotal role in the descending pain modulatory circuit. The objective of this study was to investigate morphological changes in the astroglia in models that are commonly used in pain and itch studies. METHODS Five different mouse models of pain, as well as two models of chronic itch, were established using complete Freund's adjuvant (CFA), spared nerve injury (SNI), bone cancer pain (BCP), cisplatin (CIS), and paclitaxel (PTX) for pain, and diphenylcyclopropenone (DCP) and acetone and diethyl ether followed by water (AEW) for chronic itch. von Frey tests and video recordings were employed to assess pain and itching behaviors. The immunofluorescence of S100β, pSTAT3, and glial fibrillary acidic protein (GFAP) was examined. Two- and three-dimensional studies were used to evaluate changes in astrocyte morphology. RESULTS Significant scratching was caused by DCP and AEW, whereas the administration of CFA, SNI, BCP, CIS, and PTX produced clear mechanical allodynia. The expression of GFAP in the lPAG/vlPAG was upregulated in CFA, SNI, BCP, CIS, PTX, and DCP mice but decreased in AEW mice. According to Sholl analysis, CFA, SNI, PTX, and BCP mice showed substantially higher astrocyte intersections in the vlPAG, whereas CFA, SNI, BCP, CIS, and DCP mice presented longer peak lengths. In three-dimensional analysis, CFA, SNI, PTX, and DCP mice showed increased astrocyte surface areas, while CIS and AEW mice showed both reduced surface areas and/or volumes of astrocytes. CONCLUSION The findings showed that different pain and itching conditions have different astrocyte morphologies, and these variations in morphological changes help to explain the pathophysiology of these conditions.
Collapse
Affiliation(s)
- Chenghao Wang
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Science, Institutes of Integrative Medicine, Shanghai Key Laboratory of Acupuncture Mechanism and Acupoint Function, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Shanghai Medical College, Fudan University, Shanghai 200032, China; College of Sports Medicine and Rehabilitation, Shandong First Medical University & Shandong Academy of Medical Sciences, Tai'an 271016, China
| | - Xiaotong Yang
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Science, Institutes of Integrative Medicine, Shanghai Key Laboratory of Acupuncture Mechanism and Acupoint Function, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Tianchi Gao
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Science, Institutes of Integrative Medicine, Shanghai Key Laboratory of Acupuncture Mechanism and Acupoint Function, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Yuyu Zhao
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Science, Institutes of Integrative Medicine, Shanghai Key Laboratory of Acupuncture Mechanism and Acupoint Function, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Yayue Yang
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Science, Institutes of Integrative Medicine, Shanghai Key Laboratory of Acupuncture Mechanism and Acupoint Function, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Xiaochen Li
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Science, Institutes of Integrative Medicine, Shanghai Key Laboratory of Acupuncture Mechanism and Acupoint Function, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Yachen Yang
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Science, Institutes of Integrative Medicine, Shanghai Key Laboratory of Acupuncture Mechanism and Acupoint Function, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Ting Yi
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Science, Institutes of Integrative Medicine, Shanghai Key Laboratory of Acupuncture Mechanism and Acupoint Function, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Yanqing Wang
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Science, Institutes of Integrative Medicine, Shanghai Key Laboratory of Acupuncture Mechanism and Acupoint Function, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Wenli Mi
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Science, Institutes of Integrative Medicine, Shanghai Key Laboratory of Acupuncture Mechanism and Acupoint Function, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Shanghai Medical College, Fudan University, Shanghai 200032, China.
| |
Collapse
|
5
|
Huang XB, Huang Q, Jiang MC, Zhong Q, Zheng HL, Wang JB, Huang ZN, Wang HG, Liu ZY, Li YF, Xu KX, Lin M, Li P, Huang ZH, Xie JW, Lin JX, Lu J, Que JW, Zheng CH, Chen QY, Huang CM. KLHL21 suppresses gastric tumourigenesis via maintaining STAT3 signalling equilibrium in stomach homoeostasis. Gut 2024:gutjnl-2023-331111. [PMID: 38969490 DOI: 10.1136/gutjnl-2023-331111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Accepted: 06/13/2024] [Indexed: 07/07/2024]
Abstract
OBJECTIVE Precancerous metaplasia transition to dysplasia poses a risk for subsequent intestinal-type gastric adenocarcinoma. However, the molecular basis underlying the transformation from metaplastic to cancerous cells remains poorly understood. DESIGN An integrated analysis of genes associated with metaplasia, dysplasia was conducted, verified and characterised in the gastric tissues of patients by single-cell RNA sequencing and immunostaining. Multiple mouse models, including homozygous conditional knockout Klhl21-floxed mice, were generated to investigate the role of Klhl21 deletion in stemness, DNA damage and tumour formation. Mass-spectrometry-based proteomics and ribosome sequencing were used to elucidate the underlying molecular mechanisms. RESULTS Kelch-like protein 21 (KLHL21) expression progressively decreased in metaplasia, dysplasia and cancer. Genetic deletion of Klhl21 enhances the rapid proliferation of Mist1+ cells and their descendant cells. Klhl21 loss during metaplasia facilitates the recruitment of damaged cells into the cell cycle via STAT3 signalling. Increased STAT3 activity was confirmed in cancer cells lacking KLHL21, boosting self-renewal and tumourigenicity. Mechanistically, the loss of KLHL21 promotes PIK3CB mRNA translation by stabilising the PABPC1-eIF4G complex, subsequently causing STAT3 activation. Pharmacological STAT3 inhibition by TTI-101 elicited anticancer effects, effectively impeding the transition from metaplasia to dysplasia. In patients with gastric cancer, low levels of KLHL21 had a shorter survival rate and a worse response to adjuvant chemotherapy. CONCLUSIONS Our findings highlighted that KLHL21 loss triggers STAT3 reactivation through PABPC1-mediated PIK3CB translational activation, and targeting STAT3 can reverse preneoplastic metaplasia in KLHL21-deficient stomachs.
Collapse
Affiliation(s)
- Xiao-Bo Huang
- Department of Gastric Surgery, Fujian Medical University Union Hospital, Fuzhou, China
- Key Laboratory of Ministry of Education of Gastrointestinal Cancer, Fujian Medical University, Fuzhou, China
- Fujian Key Laboratory of Tumor Microbiology, Fujian Medical University, Fujian, China
| | - Qiang Huang
- Department of Gastric Surgery, Fujian Medical University Union Hospital, Fuzhou, China
- Key Laboratory of Ministry of Education of Gastrointestinal Cancer, Fujian Medical University, Fuzhou, China
- Fujian Key Laboratory of Tumor Microbiology, Fujian Medical University, Fujian, China
| | - Mei-Chen Jiang
- Department of Pathology, Fujian Medical University Union Hospital, Fuzhou, China
| | - Qing Zhong
- Department of Gastric Surgery, Fujian Medical University Union Hospital, Fuzhou, China
- Key Laboratory of Ministry of Education of Gastrointestinal Cancer, Fujian Medical University, Fuzhou, China
- Fujian Key Laboratory of Tumor Microbiology, Fujian Medical University, Fujian, China
| | - Hua-Long Zheng
- Department of Gastric Surgery, Fujian Medical University Union Hospital, Fuzhou, China
- Key Laboratory of Ministry of Education of Gastrointestinal Cancer, Fujian Medical University, Fuzhou, China
- Fujian Key Laboratory of Tumor Microbiology, Fujian Medical University, Fujian, China
| | - Jia-Bin Wang
- Department of Gastric Surgery, Fujian Medical University Union Hospital, Fuzhou, China
- Key Laboratory of Ministry of Education of Gastrointestinal Cancer, Fujian Medical University, Fuzhou, China
- Fujian Key Laboratory of Tumor Microbiology, Fujian Medical University, Fujian, China
| | - Ze-Ning Huang
- Department of Gastric Surgery, Fujian Medical University Union Hospital, Fuzhou, China
- Key Laboratory of Ministry of Education of Gastrointestinal Cancer, Fujian Medical University, Fuzhou, China
- Fujian Key Laboratory of Tumor Microbiology, Fujian Medical University, Fujian, China
| | - Hua-Gen Wang
- Department of Gastric Surgery, Fujian Medical University Union Hospital, Fuzhou, China
- Key Laboratory of Ministry of Education of Gastrointestinal Cancer, Fujian Medical University, Fuzhou, China
- Fujian Key Laboratory of Tumor Microbiology, Fujian Medical University, Fujian, China
| | - Zhi-Yu Liu
- Department of Gastric Surgery, Fujian Medical University Union Hospital, Fuzhou, China
- Key Laboratory of Ministry of Education of Gastrointestinal Cancer, Fujian Medical University, Fuzhou, China
- Fujian Key Laboratory of Tumor Microbiology, Fujian Medical University, Fujian, China
| | - Yi-Fan Li
- Department of Gastric Surgery, Fujian Medical University Union Hospital, Fuzhou, China
- Key Laboratory of Ministry of Education of Gastrointestinal Cancer, Fujian Medical University, Fuzhou, China
- Fujian Key Laboratory of Tumor Microbiology, Fujian Medical University, Fujian, China
| | - Kai-Xiang Xu
- Department of Gastric Surgery, Fujian Medical University Union Hospital, Fuzhou, China
- Key Laboratory of Ministry of Education of Gastrointestinal Cancer, Fujian Medical University, Fuzhou, China
- Fujian Key Laboratory of Tumor Microbiology, Fujian Medical University, Fujian, China
| | - Mi Lin
- Department of Gastric Surgery, Fujian Medical University Union Hospital, Fuzhou, China
- Key Laboratory of Ministry of Education of Gastrointestinal Cancer, Fujian Medical University, Fuzhou, China
- Fujian Key Laboratory of Tumor Microbiology, Fujian Medical University, Fujian, China
| | - Ping Li
- Department of Gastric Surgery, Fujian Medical University Union Hospital, Fuzhou, China
- Key Laboratory of Ministry of Education of Gastrointestinal Cancer, Fujian Medical University, Fuzhou, China
- Fujian Key Laboratory of Tumor Microbiology, Fujian Medical University, Fujian, China
| | - Zhi-Hong Huang
- Public Technology Service Center, Fujian Medical University, Fuzhou, China
| | - Jian-Wei Xie
- Department of Gastric Surgery, Fujian Medical University Union Hospital, Fuzhou, China
- Key Laboratory of Ministry of Education of Gastrointestinal Cancer, Fujian Medical University, Fuzhou, China
- Fujian Key Laboratory of Tumor Microbiology, Fujian Medical University, Fujian, China
| | - Jian-Xian Lin
- Department of Gastric Surgery, Fujian Medical University Union Hospital, Fuzhou, China
- Key Laboratory of Ministry of Education of Gastrointestinal Cancer, Fujian Medical University, Fuzhou, China
- Fujian Key Laboratory of Tumor Microbiology, Fujian Medical University, Fujian, China
| | - Jun Lu
- Department of Gastric Surgery, Fujian Medical University Union Hospital, Fuzhou, China
- Key Laboratory of Ministry of Education of Gastrointestinal Cancer, Fujian Medical University, Fuzhou, China
- Fujian Key Laboratory of Tumor Microbiology, Fujian Medical University, Fujian, China
| | - Jian-Wen Que
- Columbia Center for Human Development, Department of Medicine, Vagelos College of Physicians and Surgeons, Columbia University Irving Medical Center, New York, New York, USA
- Division of Digestive and Liver Diseases, Department of Medicine, Vagelos College of Physicians and Surgeons, Columbia University Irving Medical Center, New York, New York, USA
- Herbert Irving Comprehensive Cancer Center, Vagelos College of Physicians and Surgeons, Columbia University Irving Medical Center, New York, New York, USA
| | - Chao-Hui Zheng
- Department of Gastric Surgery, Fujian Medical University Union Hospital, Fuzhou, China
- Key Laboratory of Ministry of Education of Gastrointestinal Cancer, Fujian Medical University, Fuzhou, China
- Fujian Key Laboratory of Tumor Microbiology, Fujian Medical University, Fujian, China
| | - Qi-Yue Chen
- Department of Gastric Surgery, Fujian Medical University Union Hospital, Fuzhou, China
- Key Laboratory of Ministry of Education of Gastrointestinal Cancer, Fujian Medical University, Fuzhou, China
- Fujian Key Laboratory of Tumor Microbiology, Fujian Medical University, Fujian, China
| | - Chang-Ming Huang
- Department of Gastric Surgery, Fujian Medical University Union Hospital, Fuzhou, China
- Key Laboratory of Ministry of Education of Gastrointestinal Cancer, Fujian Medical University, Fuzhou, China
- Fujian Key Laboratory of Tumor Microbiology, Fujian Medical University, Fujian, China
| |
Collapse
|
6
|
Zhao DJ, Li X, Lin HX, Zheng H, Zhou D, Tang P. Efficacy and safety of upadacitinib in the treatment of moderate-to-severe atopic dermatitis: A systematic review. PLoS One 2024; 19:e0306463. [PMID: 39058673 PMCID: PMC11280219 DOI: 10.1371/journal.pone.0306463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2024] [Accepted: 06/18/2024] [Indexed: 07/28/2024] Open
Abstract
OBJECTIVE To evaluate the efficacy and safety of upadacitinib in the treatment of moderate-to-severe atopic dermatitis (AD), and provide reference for rational clinical medication. METHODS PubMed, Medline, Embase, Web of Science, Clinical Trials Website, and Cochrane Library databases were searched from the time of establishment until January 6, 2024, to compile a list of all randomized controlled trials (RCTs) including upadacitinib in the treatment of moderate-to-severe AD. The quality of the included studies was evaluated using the Cochrane Systematic Review. Review Manager 5.3 software was utilized for statistical analysis of outcome measures. RESULTS A total of five studies were included in the meta-analysis. The results revealed that the 15 mg and 30 mg upadacitinib significantly improved Eczema Area and Severity Index (EASI) 75% {[Odds Ratio (OR) = 8.58, 95% confidence interval (CI) (5.84-12.60), P < 0.00001] [OR = 15.62, 95% CI (10.89-22.42), P < 0.00001]}, Numerical Rating Scale (NRS) ≥ 4 {[OR = 7.13, 95% CI (5.63-9.01), P < 0.00001] [OR = 11.30, 95% CI (8.93-14.31), P < 0.00001]}, and Investigator's Global Assessment (IGA) 0/1 {[OR = 8.63, 95% CI (6.60-11.27), P < 0.00001] [OR = 16.04, 95% CI (12.26-20.99), P < 0.00001]} compared to placebo. In terms of safety, although 15 mg and 30 mg upadacitinib significantly increased the overall adverse events rate compared to placebo {[OR = 1.31, 95% CI (1.09-1.58), P = 0.004] [OR = 1.85, 95% CI (1.54-2.21), P < 0.00001]}, there was no significant difference in the serious adverse events rate {[OR = 0.73, 95% CI (0.41-1.29), P = 0.28] [OR = 0.69, 95% CI (0.39-1.23), P = 0.21]} and withdrawal rate due to adverse events {[OR = 0.66, 95% CI (0.39-1.11), P = 0.12] [OR = 0.85, 95% CI (0.52-1.38), P = 0.50]} compared to placebo. CONCLUSION This meta-analysis preliminarily suggests that upadacitinib is effective and safe for usage in the treatment of moderate-to-severe AD. Additionally, upadacitinib can instantly relieve itchiness and effectively reduce symptoms and signs, with its 30-mg dose being more effective than the 15-mg dose.
Collapse
Affiliation(s)
- Dan-Jie Zhao
- Department of Pharmacology, The First People’s Hospital of Shuangliu District, West China (Airport) Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Xia Li
- Department of Pharmacology, The First People’s Hospital of Shuangliu District, West China (Airport) Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Hai-Xia Lin
- Department of Pharmacology, The First People’s Hospital of Shuangliu District, West China (Airport) Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Hong Zheng
- Department of Pharmacology, The First People’s Hospital of Shuangliu District, West China (Airport) Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Di Zhou
- Department of Pharmacology, The First People’s Hospital of Shuangliu District, West China (Airport) Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Peng Tang
- Department of TCM Pharmacy, Chengdu Integrated TCM and Western Medicine Hospital, Chengdu, Sichuan, China
| |
Collapse
|
7
|
Yang Y, Pan Y, Liu B, Zhang Y, Yin C, Wang J, Nie H, Xu R, Tai Y, He X, Shao X, Liang Y, Fang J, Liu B. Neutrophil-derived oxidative stress contributes to skin inflammation and scratching in a mouse model of allergic contact dermatitis via triggering pro-inflammatory cytokine and pruritogen production in skin. Biochem Pharmacol 2024; 223:116163. [PMID: 38522555 DOI: 10.1016/j.bcp.2024.116163] [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: 11/24/2023] [Revised: 03/11/2024] [Accepted: 03/21/2024] [Indexed: 03/26/2024]
Abstract
Allergic contact dermatitis (ACD) is a common skin disease featured with skin inflammation and a mixed itch/pain sensation. The itch/pain causes the desire to scratch, affecting both physical and psychological aspects of patients. Nevertheless, the mechanisms underlying itch/pain sensation of ACD still remain elusive. Here, we found that oxidative stress and oxidation-related injury were remarkably increased in the inflamed skin of a mouse model of ACD. Reducing oxidative stress significantly attenuated itch/pain-related scratching, allokonesis and skin inflammation. RNA-Sequencing reveals oxidative stress contributes to a series of skin biological processes, including inflammation and immune response. Attenuating oxidative stress reduces overproduction of IL-1β and IL-33, two critical cytokines involved in inflammation and pain/itch, in the inflamed skin of model mice. Exogenously injecting H2O2 into the neck skin of naïve mice triggered IL-33 overproduction in skin keratinocytes and induced scratching, which was reduced in mice deficient in IL-33 receptor ST2. ACD model mice showed remarkable neutrophil infiltration in the inflamed skin. Blocking neutrophil infiltration reduced oxidative stress and attenuated scratching and skin inflammation. Therefore, our study reveals a critical contribution of neutrophil-derived oxidative stress to skin inflammation and itch/pain-related scratching of ACD model mice via mechanisms involving the triggering of IL-33 overproduction in skin keratinocytes. Targeting skin oxidative stress may represent an effective therapy for ameliorating ACD.
Collapse
Affiliation(s)
- Yunqin Yang
- Department of Neurobiology and Acupuncture Research, The Third Clinical Medical College, Key Laboratory of Acupuncture and Neurology of Zhejiang Province, Zhejiang Chinese Medical University, Hangzhou, China
| | - Yushuang Pan
- Department of Neurobiology and Acupuncture Research, The Third Clinical Medical College, Key Laboratory of Acupuncture and Neurology of Zhejiang Province, Zhejiang Chinese Medical University, Hangzhou, China
| | - Boyu Liu
- Department of Neurobiology and Acupuncture Research, The Third Clinical Medical College, Key Laboratory of Acupuncture and Neurology of Zhejiang Province, Zhejiang Chinese Medical University, Hangzhou, China
| | - Yunwen Zhang
- Department of Neurobiology and Acupuncture Research, The Third Clinical Medical College, Key Laboratory of Acupuncture and Neurology of Zhejiang Province, Zhejiang Chinese Medical University, Hangzhou, China
| | - Chengyu Yin
- Department of Neurobiology and Acupuncture Research, The Third Clinical Medical College, Key Laboratory of Acupuncture and Neurology of Zhejiang Province, Zhejiang Chinese Medical University, Hangzhou, China
| | - Jie Wang
- Department of Rehabilitation in Traditional Chinese Medicine, the Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Huimin Nie
- Department of Neurobiology and Acupuncture Research, The Third Clinical Medical College, Key Laboratory of Acupuncture and Neurology of Zhejiang Province, Zhejiang Chinese Medical University, Hangzhou, China
| | - Ruoyao Xu
- Department of Neurobiology and Acupuncture Research, The Third Clinical Medical College, Key Laboratory of Acupuncture and Neurology of Zhejiang Province, Zhejiang Chinese Medical University, Hangzhou, China
| | - Yan Tai
- Academy of Chinese Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, China
| | - Xiaofen He
- Department of Neurobiology and Acupuncture Research, The Third Clinical Medical College, Key Laboratory of Acupuncture and Neurology of Zhejiang Province, Zhejiang Chinese Medical University, Hangzhou, China
| | - Xiaomei Shao
- Department of Neurobiology and Acupuncture Research, The Third Clinical Medical College, Key Laboratory of Acupuncture and Neurology of Zhejiang Province, Zhejiang Chinese Medical University, Hangzhou, China
| | - Yi Liang
- Department of Neurobiology and Acupuncture Research, The Third Clinical Medical College, Key Laboratory of Acupuncture and Neurology of Zhejiang Province, Zhejiang Chinese Medical University, Hangzhou, China
| | - Jianqiao Fang
- Department of Neurobiology and Acupuncture Research, The Third Clinical Medical College, Key Laboratory of Acupuncture and Neurology of Zhejiang Province, Zhejiang Chinese Medical University, Hangzhou, China
| | - Boyi Liu
- Department of Neurobiology and Acupuncture Research, The Third Clinical Medical College, Key Laboratory of Acupuncture and Neurology of Zhejiang Province, Zhejiang Chinese Medical University, Hangzhou, China.
| |
Collapse
|
8
|
Li T, Hu L, Qin C, Li Y, Song Z, Jiao Y, Wang C, Cui W, Zhang L. Annexin 1 Reduces Dermatitis-Induced Itch and Cholestatic Itch through Inhibiting Neuroinflammation and Iron Overload in the Spinal Dorsal Horn of Mice. Brain Sci 2024; 14:440. [PMID: 38790419 PMCID: PMC11118431 DOI: 10.3390/brainsci14050440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Revised: 04/19/2024] [Accepted: 04/23/2024] [Indexed: 05/26/2024] Open
Abstract
The unclear pathogenesis of chronic itch originating from several systemic disorders poses challenges to clinical intervention. Recent studies recapitulate the spinal neurocircuits associated with neuroinflammation and synaptic plasticity responsible for pruriceptive sensations. The resolution of nociception and inflammation by Annexin 1 (ANXA1) has been identified. Given that pain and itch share many neural mechanisms, we employed two mice models of chronic itch to study the underlying targets and therapeutic potential of ANXA1, comprising allergic contact dermatitis-induced itch and cholestatic itch. Herein, we report that spinal expression of ANXA1 is down-regulated in mice with dermatitis-induced itch and cholestatic itch. Repetitive injections of ANXA1-derived peptide Ac2-26 (intrathecal, 10 μg) reduce itch-like scratching behaviors following dermatitis and cholestasis. Single exposure to Ac2-26 (intrathecal, 10 μg) alleviates the established itch phenotypes. Moreover, systemic delivery of Ac2-26 (intravenous, 100 μg) is effective against chronic dermatitis-induced itch and cholestatic itch. Strikingly, Ac2-26 therapy inhibits transferrin receptor 1 over-expression, iron accumulation, cytokine IL-17 release and the production of its receptor IL-17R, as well as astrocyte activation in the dorsal horn of spinal cord in mouse with dermatitis and cholestasis. Pharmacological intervention with iron chelator deferoxamine impairs chronic itch behaviors and spinal iron accumulation after dermatitis and cholestasis. Also, spinal IL-17/IL-17R neutralization attenuates chronic itch. Taken together, this current research indicates that ANXA1 protects against the beginning and maintenance of long-term dermatitis-induced itch and cholestatic itch, which may occur via the spinal suppression of IL-17-mediated neuroinflammation, astrocyte activation and iron overload.
Collapse
Affiliation(s)
- Tang Li
- Department of Anesthesiology and Pain Research Center, The Affiliated Hospital of Jiaxing University, Jiaxing 314001, China
- Department of Anesthesiology, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Lingyue Hu
- Department of Anesthesiology, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Chao Qin
- Department of Anesthesiology, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Yuanjie Li
- Department of Anesthesiology, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Zhenhua Song
- Department of Anesthesiology, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Yang Jiao
- Department of Anesthesiology, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Chunyan Wang
- Department of Anesthesiology, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Wei Cui
- Department of Anesthesiology, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Linlin Zhang
- Department of Anesthesiology, Tianjin Medical University General Hospital, Tianjin 300052, China
| |
Collapse
|
9
|
Wen X, Yu H, Zhang L, Li L, Wang X, Fu X, Sun Z, Zhang X, Zhu L, Wu X, Yan J, Shi C, Zhang M, Zhang M, Li X. The relationship and clinical significance of serum cytokine expression level and skin pruritus in patients with Hodgkin lymphoma and angioimmunoblastic T-cell lymphoma. Int Immunopharmacol 2024; 131:111777. [PMID: 38489975 DOI: 10.1016/j.intimp.2024.111777] [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: 10/20/2023] [Revised: 02/19/2024] [Accepted: 02/27/2024] [Indexed: 03/17/2024]
Abstract
Pruritus of lymphoma is commonly associated with both Hodgkin lymphoma (HL) and angioimmunoblastic T cell lymphoma (AITL) and critically affects the life quality of patient. Recent evidence suggests that the pruritogenic cytokines seem to play a significant role in the genesis of chronic. This study aims to investigate the cytokines associated with itching in lymphoma patients and provide the basis for potential therapeutic targets. Serum samples were collected from 60 lymphoma patients, including 47 with Hodgkin lymphoma (HL) and 13 with angioimmunoblastic T-cell lymphoma (AITL), serving as the observation group (lymphoma group, LP group, n = 60). Additionally, serum samples from 8 healthy donors (HD group, n = 8) were collected for comparison. Within the lymphoma group, patients were stratified into those with pruritus (LWP group, n = 30) and those without pruritus (LWOP group, n = 30) based on the presence of skin pruritus symptoms. Elevated levels of multiple cytokines were significantly observed in the LP group in comparison to the HD group (p < 0.01). Patients in LWP group exhibited higher serum levels of IL-31 (p < 0.001), IL-1β (P = 0.039), and IL-1α (P = 0.037) compared to LWOP group. Notably, serum IL-31 levels were higher in advanced AITL patients (stage IV) than in early AITL patients (stage I-Ⅲ, P < 0.05). In subgroup analysis, patients with pruritus in the AITL group exhibited higher serum levels of MIG and CTACK compared to HL group, whereas PDGF-BB levels were significantly lower (p < 0.05). Elevated serum levels of IL-31, IL-1β, and IL-1α are linked to lymphoma-associated pruritus. Differences in serum cytokine profiles between HL and AITL subgroups are also highlighted. These findings offer valuable insights for clinical intervention in managing lymphoma-related pruritus.
Collapse
Affiliation(s)
- Xin Wen
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Henan 450052 Zhengzhou, China; Lymphoma Diagnosis and Treatment Center of Henan Province, Zhengzhou, Henan 450052, China
| | - Hui Yu
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Henan 450052 Zhengzhou, China; Lymphoma Diagnosis and Treatment Center of Henan Province, Zhengzhou, Henan 450052, China
| | - Lei Zhang
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Henan 450052 Zhengzhou, China; Lymphoma Diagnosis and Treatment Center of Henan Province, Zhengzhou, Henan 450052, China
| | - Ling Li
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Henan 450052 Zhengzhou, China; Lymphoma Diagnosis and Treatment Center of Henan Province, Zhengzhou, Henan 450052, China
| | - Xinhua Wang
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Henan 450052 Zhengzhou, China; Lymphoma Diagnosis and Treatment Center of Henan Province, Zhengzhou, Henan 450052, China
| | - Xiaorui Fu
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Henan 450052 Zhengzhou, China; Lymphoma Diagnosis and Treatment Center of Henan Province, Zhengzhou, Henan 450052, China
| | - Zhenchang Sun
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Henan 450052 Zhengzhou, China; Lymphoma Diagnosis and Treatment Center of Henan Province, Zhengzhou, Henan 450052, China
| | - Xudong Zhang
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Henan 450052 Zhengzhou, China; Lymphoma Diagnosis and Treatment Center of Henan Province, Zhengzhou, Henan 450052, China
| | - Linan Zhu
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Henan 450052 Zhengzhou, China; Lymphoma Diagnosis and Treatment Center of Henan Province, Zhengzhou, Henan 450052, China
| | - Xiaolong Wu
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Henan 450052 Zhengzhou, China; Lymphoma Diagnosis and Treatment Center of Henan Province, Zhengzhou, Henan 450052, China
| | - Jiaqin Yan
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Henan 450052 Zhengzhou, China; Lymphoma Diagnosis and Treatment Center of Henan Province, Zhengzhou, Henan 450052, China
| | - Cunzhen Shi
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Henan 450052 Zhengzhou, China; Lymphoma Diagnosis and Treatment Center of Henan Province, Zhengzhou, Henan 450052, China
| | - Mengjuan Zhang
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Henan 450052 Zhengzhou, China; Lymphoma Diagnosis and Treatment Center of Henan Province, Zhengzhou, Henan 450052, China
| | - Mingzhi Zhang
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Henan 450052 Zhengzhou, China; Lymphoma Diagnosis and Treatment Center of Henan Province, Zhengzhou, Henan 450052, China.
| | - Xin Li
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Henan 450052 Zhengzhou, China; Lymphoma Diagnosis and Treatment Center of Henan Province, Zhengzhou, Henan 450052, China.
| |
Collapse
|
10
|
Mahmoud RH, Brooks SG, Yosipovitch G. Current and emerging drugs for the treatment of pruritus: an update of the literature. Expert Opin Pharmacother 2024; 25:655-672. [PMID: 38682595 DOI: 10.1080/14656566.2024.2349193] [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: 02/23/2024] [Accepted: 04/25/2024] [Indexed: 05/01/2024]
Abstract
INTRODUCTION Pruritus, particularly in its chronic form, often imposes significant suffering and reductions in patients' quality of life. The pathophysiology of itch is varied depending on disease context, creating opportunities for unique drug development and multimodal therapy. AREAS COVERED The purpose of this article is to provide an update of the literature regarding current and emerging therapeutics in itch. We review the multitudes of drug targets available and corresponding drugs that have shown efficacy in clinical trials, with a particular emphasis on phase 2 and 3 trials and beyond. Broadly, these targets include therapies directed against type 2 inflammation (i.e. Th2 cytokines, JAK/STAT, lipid mediators, T-cell mediators, and other enzymes and receptors) and neural receptors and targets (i.e. PARs, TRP channels, opioid receptors, MRGPRs, GABA receptors, and cannabinoid receptors). EXPERT OPINION Therapeutics for itch are emerging at a remarkable pace, and we are entering an era with more and more specialized therapies. Increasingly, these treatments are able to relieve itch beyond their effect on inflammation by directly targeting the neurosensory system.
Collapse
Affiliation(s)
- Rami H Mahmoud
- Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery, Miami Itch Center, University of Miami Miller School of Medicine, Coral Gables, FL, USA
| | - Sarah G Brooks
- Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery, Miami Itch Center, University of Miami Miller School of Medicine, Coral Gables, FL, USA
| | - Gil Yosipovitch
- Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery, Miami Itch Center, University of Miami Miller School of Medicine, Coral Gables, FL, USA
| |
Collapse
|
11
|
Kaneko T, Oura A, Imai Y, Kusumoto-Yoshida I, Kanekura T, Okuno H, Kuwaki T, Kashiwadani H. Orexin neurons play contrasting roles in itch and pain neural processing via projecting to the periaqueductal gray. Commun Biol 2024; 7:290. [PMID: 38459114 PMCID: PMC10923787 DOI: 10.1038/s42003-024-05997-x] [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: 08/04/2023] [Accepted: 02/28/2024] [Indexed: 03/10/2024] Open
Abstract
Pain and itch are recognized as antagonistically regulated sensations; pain suppresses itch, whilst pain inhibition enhances itch. The neural mechanisms at the central nervous system (CNS) underlying these pain-itch interactions still need to be explored. Here, we revealed the contrasting role of orexin-producing neurons (ORX neurons) in the lateral hypothalamus (LH), which suppresses pain while enhancing itch neural processing, by applying optogenetics to the acute pruritus and pain model. We also revealed that the circuit of ORX neurons from LH to periaqueductal gray regions served in the contrasting modulation of itch and pain processing using optogenetic terminal inhibition techniques. Additionally, by using an atopic dermatitis model, we confirmed the involvement of ORX neurons in regulating chronic itch processing, which could lead to a novel therapeutic target for persistent pruritus in clinical settings. Our findings provide new insight into the mechanism of antagonistic regulation between pain and itch in the CNS.
Collapse
Affiliation(s)
- Tatsuroh Kaneko
- Department of Physiology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan.
| | - Asuka Oura
- Department of Physiology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Yoshiki Imai
- Department of Physiology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Ikue Kusumoto-Yoshida
- Department of Physiology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Takuro Kanekura
- Department of Dermatology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Hiroyuki Okuno
- Laboratory of Biochemistry and Molecular Biology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Tomoyuki Kuwaki
- Department of Physiology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Hideki Kashiwadani
- Department of Physiology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan.
| |
Collapse
|
12
|
Li H, Liu Y, Liu Y, Xu L, Sun Z, Zheng D, Liu X, Song C, Zhang Y, Liang H, Yang B, Tian X, Luo J, Chang Q. Tumor-associated astrocytes promote tumor progression of Sonic Hedgehog medulloblastoma by secreting lipocalin-2. Brain Pathol 2024; 34:e13212. [PMID: 37721122 PMCID: PMC10711256 DOI: 10.1111/bpa.13212] [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: 03/19/2023] [Accepted: 08/28/2023] [Indexed: 09/19/2023] Open
Abstract
Sonic Hedgehog (SHH) subgroup of medulloblastoma (MB) accounts for about 25% of all subgroups of MB. Tumor microenvironment (TME) may play a key role in the tumor progression and therapeutic resistance. Tumor-associated astrocytes (TAAs) are reshaped to drive tumor progression through multiple paracrine signals. However, the mechanism by which TAAs modulate MB cells remains elusive. Here, we illuminated that TAAs showed a specific and dynamic pattern during SHH-MB development. Most TAAs gathered to the tumor margin during the tumor progression, rather than evenly distributed in the early-stage tumors. We further demonstrated that lipocalin-2 (LCN2) secreted by TAAs could promote the tumor growth and was correlated with the poor prognosis of MB patients. Knocking down LCN2 in TAAs in vitro impeded the proliferation and migration abilities of MB cells. In addition, we identified that TAAs accelerated the tumor growth by secreting LCN2 via STAT3 signaling pathway. Accordingly, blockade of STAT3 signaling by its inhibitor WP1066 and AAV-Lcn2 shRNA, respectively, in TAAs abrogated the effects of LCN2 on tumor progression in vitro and in vivo. In summary, we for the first time clarified that LCN2, secreted by TAAs, could promote MB tumor progression via STAT3 pathway and has potential prognostic value. Our findings unveiled a new sight in reprogramming the TME of SHH-MB and provided a potential therapeutic strategy targeting TAAs.
Collapse
Affiliation(s)
- Haishuang Li
- Department of Pathology, School of Basic Medical Sciences, Peking University Third HospitalPeking University Health Science CenterBeijingChina
- Department of Neuropathology, Beijing Neurosurgical Institute, Tiantan HospitalCapital Medical UniversityBeijingChina
- Beijing Key Laboratory of Research and Transformation of Biomarkers for Neurodegenerative Diseases, Peking University Third HospitalPeking University Health Science CenterBeijingChina
| | - Yuqing Liu
- Department of Neuropathology, Beijing Neurosurgical Institute, Tiantan HospitalCapital Medical UniversityBeijingChina
| | - Yantao Liu
- Department of Pathology, School of Basic Medical Sciences, Peking University Third HospitalPeking University Health Science CenterBeijingChina
- Department of Neuropathology, Beijing Neurosurgical Institute, Tiantan HospitalCapital Medical UniversityBeijingChina
- Beijing Key Laboratory of Research and Transformation of Biomarkers for Neurodegenerative Diseases, Peking University Third HospitalPeking University Health Science CenterBeijingChina
| | - Luzheng Xu
- Department of Medical and Health Analysis CenterPeking University Health Science CenterBeijingChina
| | - Ziwen Sun
- Department of Pathology, School of Basic Medical Sciences, Peking University Third HospitalPeking University Health Science CenterBeijingChina
- Department of Neuropathology, Beijing Neurosurgical Institute, Tiantan HospitalCapital Medical UniversityBeijingChina
- Beijing Key Laboratory of Research and Transformation of Biomarkers for Neurodegenerative Diseases, Peking University Third HospitalPeking University Health Science CenterBeijingChina
| | - Danfeng Zheng
- Department of Pathology, School of Basic Medical Sciences, Peking University Third HospitalPeking University Health Science CenterBeijingChina
- Beijing Key Laboratory of Research and Transformation of Biomarkers for Neurodegenerative Diseases, Peking University Third HospitalPeking University Health Science CenterBeijingChina
| | - Xiaodan Liu
- Department of Pathology, School of Basic Medical Sciences, Peking University Third HospitalPeking University Health Science CenterBeijingChina
- Beijing Key Laboratory of Research and Transformation of Biomarkers for Neurodegenerative Diseases, Peking University Third HospitalPeking University Health Science CenterBeijingChina
| | - Chen Song
- Department of Medical Genetics, Center for Medical GeneticsPeking University Health Science CenterBeijingChina
| | - Yu Zhang
- Department of Medical Genetics, Center for Medical GeneticsPeking University Health Science CenterBeijingChina
| | - Hui Liang
- Department of Pathology, School of Basic Medical Sciences, Peking University Third HospitalPeking University Health Science CenterBeijingChina
| | - Bao Yang
- Department of Neurosurgery, Tiantan HospitalCapital Medical UniversityBeijingChina
| | - Xinxia Tian
- Department of Pathology, School of Basic Medical Sciences, Peking University Third HospitalPeking University Health Science CenterBeijingChina
| | - Jianyuan Luo
- Department of Medical Genetics, Center for Medical GeneticsPeking University Health Science CenterBeijingChina
- Beijing Key Laboratory of Protein Posttranslational Modifications and Cell Function, Department of Biochemistry and Molecular BiologyPeking University Health Science CenterBeijingChina
| | - Qing Chang
- Department of Neuropathology, Beijing Neurosurgical Institute, Tiantan HospitalCapital Medical UniversityBeijingChina
- Beijing Key Laboratory of Research and Transformation of Biomarkers for Neurodegenerative Diseases, Peking University Third HospitalPeking University Health Science CenterBeijingChina
| |
Collapse
|
13
|
Akl EM, El-Eraki JM, Elfallah AA, Mohamed NH, Maher AM, Mansour AE, Abdelsalam OH. Does Indoxyl Sulfate Have a Role in Uremic Pruritus? A Laboratory and Interventional Study. J Cutan Med Surg 2024; 28:44-50. [PMID: 38156627 DOI: 10.1177/12034754231220935] [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] [Indexed: 01/03/2024]
Abstract
BACKGROUND Pruritus is a common complaint in patients with end-stage renal disease. Indoxyl sulfate (IS) is a tryptophan end metabolite extremely renal excreted. Activated charcoal can interfere with IS intestinal absorption. OBJECTIVES To evaluate the serum level of IS and the effect of activated charcoal on uremic pruritus. MATERIALS AND METHODS In all, 135 participants were divided into 2 main groups. In total, 45 normal and healthy individuals as a control group and 90 patients on regular hemodialysis; 45 of these patients had uremic pruritus and the other 45 were not complaining of uremic pruritus. Serum IS was measured. Activated charcoal was used by patients with uremic pruritus. The severity of pruritus and Dermatology Life Quality Index (DLQI) were assessed. RESULTS The serum IS was significantly elevated in uremic patients than in control subjects (P < .001) and significantly elevated in uremic patients without pruritus (P < .001). Furthermore, there were positive significant correlations between the serum IS and both severity of pruritus (P < .001) and DLQI (P < .001). After activated charcoal usage, there was a significant decrease in IS level with the improvement of pruritus and quality of life of patients. CONCLUSIONS IS may play a role in uremic pruritus. Activated charcoal could be considered a treatment for uremic pruritus.
Collapse
Affiliation(s)
- Essam Mohamed Akl
- Department of Dermatology and Andrology, Faculty of Medicine, Benha University, Benha, Egypt
| | - Jeylan M El-Eraki
- Specialist of Dermatology and Andrology, Ministry of Health and Population, Cairo, Egypt
| | - Assma A Elfallah
- Department of Clinical Pathology, Faculty of Medicine, Benha University, Benha, Egypt
| | - Nelly H Mohamed
- Specialist of Clinical Pathology, Ministry of Health and Population, Benha, Egypt
| | - Amr M Maher
- Specialist of Internal Medicine, Ministry of Health and Population, Cairo, Egypt
| | - Ahmed E Mansour
- Department of Internal Medicine, Faculty of Medicine, Benha University, Benha, Egypt
| | - Osama H Abdelsalam
- Department of Dermatology and Andrology, Faculty of Medicine, Benha University, Benha, Egypt
| |
Collapse
|
14
|
Bazid HAS, Sakr HG, Abdallah RA, Arafat ES, Ragheb A, Seleit I. Serum and Tissue Lipocalin-2 Expression in Chronic Kidney Disease Pruritic Patients. Appl Immunohistochem Mol Morphol 2023; 31:635-643. [PMID: 37698956 DOI: 10.1097/pai.0000000000001151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Accepted: 07/19/2023] [Indexed: 09/14/2023]
Abstract
BACKGROUND Uremic pruritus is an irritating symptom for patients with end-stage kidney disease. Lipocalin-2 (LCN2) has relevant importance in several biological cellular processes and immunity. It is also a major player in the progression of many disorders, such as renal injury. AIM To evaluate LCN2 expression in chronic kidney disease (CKD) pruritic patients in serum together with immunohistochemical expression in skin samples and further correlation of their results with the studied clinicopathologic parameters. MATERIALS AND METHODS Serum level of LCN2 (assessed by enzyme-linked immunosorbent assay) and skin immunohistochemical expression were investigated in 25 CKD patients and 25 healthy controls. Ten patients were subjected to narrowband ultraviolet B phototherapy for 12 weeks then re-evaluated for serum and tissue LCN2 after therapy. RESULTS LCN2 expression was increased significantly in both the epidermis and dermal adnexa in CKD patients over controls. Also, serum LCN2 level was higher in patients than in healthy subjects and was significantly associated with itching severity, grades of CKD, urea, and creatinine serum level. Tissue and serum levels of LCN2 were significantly diminished in CKD patients following narrowband therapy along with improvement of the severity of pruritus. CONCLUSIONS The increased serum and tissue LCN2 expression in CKD pruritic patients and its pronounced decrease, in addition to the improvement of pruritus after treatment, suggest a major pathogenic role of LCN2 in uremic pruritus.
Collapse
Affiliation(s)
- Heba A S Bazid
- Department of Dermatology, Andrology and STDS, Faculty of Medicine, Menoufia University
| | - Hanaa G Sakr
- Department of Dermatology, Andrology and STDS, Faculty of Medicine, Menoufia University
| | | | | | - Ahmed Ragheb
- Internal Medicine, Faculty of Medicine, Menoufia University, Cairo, Egypt
| | - Iman Seleit
- Department of Dermatology, Andrology and STDS, Faculty of Medicine, Menoufia University
| |
Collapse
|
15
|
Yang YY, Du LX, Zhu JY, Yi T, Yang YC, Qiao Z, Maoying QL, Chu YX, Wang YQ, Mi WL. Antipruritic effects of geraniol on acute and chronic itch via modulating spinal GABA/GRPR signaling. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2023; 119:154969. [PMID: 37516088 DOI: 10.1016/j.phymed.2023.154969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 06/12/2023] [Accepted: 07/15/2023] [Indexed: 07/31/2023]
Abstract
BACKGROUND AND PURPOSE Itch (pruritus) is a common unpleasant feeling, often accompanied by the urge of scratching the skin. It is the main symptom of many systemic and skin diseases, which can seriously affect the patient's quality of life. Geraniol (GE; trans-3,7-dimethyl-2,6-octadien-1-ol) is a natural monoterpene with diverse effects, including anti-inflammatory, antioxidant, neuroprotective, anti-nociceptive, and anticancer properties. The study aims to examine the effects of GE on acute and chronic itch, and explore the underlying mechanisms. METHODS Acute itch was investigated by using Chloroquine and compound 48/80 induced model, followed by manifestation of diphenylcyclopropenone (DCP)-induced allergic contact dermatitis and the acetone-ether-water (AEW)-induced dry skin model in mice. The scratching behavior, skin thickness, c-Fos expression, and GRPR protein expression in the spinal cord were subsequently monitored and evaluated by behavioral tests as well as pharmacological and pharmacogenetic technologies. RESULTS Dose-dependent intraperitoneal injection of GE alleviated the acute itch, induced by chloroquine and compound 48/80, as well as increased the spinal c-Fos expression. Intrathecal administration of GE suppressed the GABAA receptor inhibitor bicuculline-induced itch, GRP-induced itch, and the GABAergic neuron inhibition-induced itch. Furthermore, the subeffective dose of bicuculline blocked the anti-pruritic effect of GE on the chloroquine and compound 48/80 induced acute itch. GE also attenuated DCP and AEW-induced chronic itch, as well as the increase of spinal GRPR expression in DCP mice. CONCLUSION AND IMPLICATIONS GE alleviates both acute and chronic itch via modulating the spinal GABA/GRPR signaling in mice. Findings of this study reveal that GE may provide promising therapeutic options for itch management. Also, considering the pivotal role of essential oils in aromatherapy, GE has great application potential in aromatherapy for treating skin diseases, and especially the skin with severe pruritus.
Collapse
Affiliation(s)
- Ya-Yue Yang
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Science; Institutes of Integrative Medicine, Shanghai Key Laboratory of Acupuncture Mechanism and Acupoint Function, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Li-Xia Du
- Department of Biochemistry, School of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Jian-Yu Zhu
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Science; Institutes of Integrative Medicine, Shanghai Key Laboratory of Acupuncture Mechanism and Acupoint Function, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Ting Yi
- Chinese Medicine Research Institute, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Ya-Chen Yang
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Science; Institutes of Integrative Medicine, Shanghai Key Laboratory of Acupuncture Mechanism and Acupoint Function, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Zheng Qiao
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Science; Institutes of Integrative Medicine, Shanghai Key Laboratory of Acupuncture Mechanism and Acupoint Function, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Qi-Liang Maoying
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Science; Institutes of Integrative Medicine, Shanghai Key Laboratory of Acupuncture Mechanism and Acupoint Function, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Yu-Xia Chu
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Science; Institutes of Integrative Medicine, Shanghai Key Laboratory of Acupuncture Mechanism and Acupoint Function, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Yan-Qing Wang
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Science; Institutes of Integrative Medicine, Shanghai Key Laboratory of Acupuncture Mechanism and Acupoint Function, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Wen-Li Mi
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Science; Institutes of Integrative Medicine, Shanghai Key Laboratory of Acupuncture Mechanism and Acupoint Function, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Shanghai Medical College, Fudan University, Shanghai 200032, China.
| |
Collapse
|
16
|
Misery L, Pierre O, Le Gall-Ianotto C, Lebonvallet N, Chernyshov PV, Le Garrec R, Talagas M. Basic mechanisms of itch. J Allergy Clin Immunol 2023; 152:11-23. [PMID: 37201903 DOI: 10.1016/j.jaci.2023.05.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 05/02/2023] [Accepted: 05/11/2023] [Indexed: 05/20/2023]
Abstract
Pruritus (or itch) is an unpleasant sensation leading to a desire to scratch. In the epidermis, there are selective C or Aδ epidermal nerve endings that are pruriceptors. At their other ends, peripheral neurons form synapses with spinal neurons and interneurons. Many areas in the central nervous system are involved in itch processing. Although itch does not occur solely because of parasitic, allergic, or immunologic diseases, it is usually the consequence of neuroimmune interactions. Histamine is involved in a minority of itchy conditions, and many other mediators play a role: cytokines (eg, IL-4, IL-13, IL-31, IL-33, and thymic stromal lymphopoietin), neurotransmitters (eg, substance P, calcitonin gene-related peptide, vasoactive intestinal peptide, neuropeptide Y, NBNP, endothelin 1, and gastrin-releasing peptide), and neurotrophins (eg, nerve growth factor and brain-derived neurotrophic factor). Moreover, ion channels such as voltage-gated sodium channels, transient receptor potential vanilloid 1, transient receptor ankyrin, and transient receptor potential cation channel subfamily M (melastatin) member 8 play a crucial role. The main markers of nonhistaminergic pruriceptors are PAR-2 and MrgprX2. A notable phenomenon is the sensitization to pruritus, in which regardless of the initial cause of pruritus, there is an increased responsiveness of peripheral and central pruriceptive neurons to their normal or subthreshold afferent input in the context of chronic itch.
Collapse
Affiliation(s)
- Laurent Misery
- Laboratoire Interactions Neurones-Keratinocytes (LINK), University of Brest, Brest, France; Department of Dermatology and Venereology, University Hospital of Brest, Brest, France.
| | - Ophélie Pierre
- Laboratoire Interactions Neurones-Keratinocytes (LINK), University of Brest, Brest, France
| | - Christelle Le Gall-Ianotto
- Laboratoire Interactions Neurones-Keratinocytes (LINK), University of Brest, Brest, France; Department of Dermatology and Venereology, University Hospital of Brest, Brest, France
| | - Nicolas Lebonvallet
- Laboratoire Interactions Neurones-Keratinocytes (LINK), University of Brest, Brest, France
| | - Pavel V Chernyshov
- Department of Dermatology and Venereology, National Medical University, Kiev, Ukraine
| | - Raphaële Le Garrec
- Laboratoire Interactions Neurones-Keratinocytes (LINK), University of Brest, Brest, France
| | - Matthieu Talagas
- Laboratoire Interactions Neurones-Keratinocytes (LINK), University of Brest, Brest, France; Department of Dermatology and Venereology, University Hospital of Brest, Brest, France
| |
Collapse
|
17
|
Shin JY, Cho BO, Park JH, Kang ES, Kim YS, Jang SI. Diospyros lotus leaf extract and its main component myricitrin regulate pruritus through the inhibition of astrocyte activation. Exp Ther Med 2023; 26:323. [PMID: 37346401 PMCID: PMC10280317 DOI: 10.3892/etm.2023.12022] [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: 12/02/2022] [Accepted: 03/29/2023] [Indexed: 06/23/2023] Open
Abstract
Diospyros lotus is a deciduous plant native to Asian countries, including Korea, Japan and China, and southeast Europe. In traditional medicine, Diospyros lotus is used as an anticancer, antidiabetic and antipyretic agent. The present study aimed to evaluate the effect of Diospyros lotus leaf extract (DLE) in ameliorating histamine-independent pruritus. Activation of signal transducer and activator of transcription 3 (STAT3) in astrocytes contributes to pruritus. In this study, the effects of DLE and its main component, myricetin (MC), on the activation of STAT3, expression of glial fibrillary acidic protein (GFAP), and production of lipocalin-2 (LCN2) in IL-6-treated astrocytes and chloroquine-injected mice were investigated through western blot, reverse transcription-quantitative PCR, and immunofluorescence staining. DLE and MC inhibited STAT3 activation, GFAP expression and LCN2 release via inositol 1,4,5-trisphosphate receptor type 1 blockade in astrocytes. DLE and MC ameliorated scratching behavior, expression of GFAP, mast cell infiltration and serum IL-6 levels in chloroquine-injected mice. These results suggested that DLE and MC can be used as oral therapeutic agents for the treatment and management of pruritus.
Collapse
Affiliation(s)
- Jae Young Shin
- Department of Food Science and Technology, Jeonbuk National University, Deokjin, Jeonju, Jeollabuk 54896, Republic of Korea
- Institute of Health and Science, Jeonju University, Wansan, Jeonju, Jeollabuk 55069, Republic of Korea
| | - Byoung Ok Cho
- Institute of Health and Science, Jeonju University, Wansan, Jeonju, Jeollabuk 55069, Republic of Korea
| | - Ji Hyeon Park
- Institute of Health and Science, Jeonju University, Wansan, Jeonju, Jeollabuk 55069, Republic of Korea
| | - Eun Seo Kang
- Institute of Health and Science, Jeonju University, Wansan, Jeonju, Jeollabuk 55069, Republic of Korea
| | - Young Soo Kim
- Department of Food Science and Technology, Jeonbuk National University, Deokjin, Jeonju, Jeollabuk 54896, Republic of Korea
| | - Seon Il Jang
- Institute of Health and Science, Jeonju University, Wansan, Jeonju, Jeollabuk 55069, Republic of Korea
- Department of Health Management, Jeonju University, Wansan, Jeonju, Jeollabuk 55069, Republic of Korea
| |
Collapse
|
18
|
Furutani K, Chen O, McGinnis A, Wang Y, Serhan CN, Hansen TV, Ji RR. Novel proresolving lipid mediator mimetic 3-oxa-PD1n-3 docosapentaenoic acid reduces acute and chronic itch by modulating excitatory and inhibitory synaptic transmission and astroglial secretion of lipocalin-2 in mice. Pain 2023; 164:1340-1354. [PMID: 36378290 PMCID: PMC10182233 DOI: 10.1097/j.pain.0000000000002824] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 11/07/2022] [Indexed: 11/16/2022]
Abstract
ABSTRACT Specialized proresolving mediators (SPMs) have demonstrated potent analgesic actions in animal models of pathological pain. The actions of SPMs in acute and chronic itch are currently unknown. Recently, n-3 docosapentaenoic acid (DPA) was found to be a substrate for the biosynthesis of several novel families of SPMs and 3-oxa-PD1 n-3 DPA (3-oxa-PD1) is an oxidation-resistant metabolic stable analogue of the n-3 DPA-derived protectin D1 (PD1). In this article, we demonstrate that 3-oxa-PD1 effectively reduces both acute and chronic itch in mouse models. Intrathecal injection of 3-oxa-PD1 (100 ng) reduced acute itch induced by histamine, chloroquine, or morphine. Furthermore, intrathecal 3-oxa-PD1 effectively reduced chronic itch, induced by cutaneous T-cell lymphoma (CTCL), allergic contact dermatitis with dinitrofluorobenzene, and psoriasis by imiquimod. Intratumoral injection of 3-oxa-PD1 also suppressed CTCL-induced chronic itch. Strikingly, the antipruritic effect lasted for several weeks after 1-week intrathecal 3-oxa-PD1 treatment. Whole-cell recordings revealed significant increase in excitatory postsynaptic currents in spinal dorsal horn (SDH) neurons of CTCL mice, but this increase was blocked by 3-oxa-PD1. 3-oxa-PD1 further increased inhibitory postsynaptic currents in SDH neurons of CTCL mice. Cutaneous T-cell lymphoma increased the spinal levels of lipocalin-2 (LCN2), an itch mediator produced by astrocytes. 3-oxa-PD1 suppressed LCN2 production in CTCL mice and LCN2 secretion in astrocytes. Finally, CTCL-induced anxiety was alleviated by intrathecal 3-oxa-PD1. Our findings suggest that 3-oxa-PD1 potently inhibits acute and chronic itch through the regulation of excitatory or inhibitory synaptic transmission and astroglial LCN2 production. Therefore, stable SPM analogs such as 3-oxa-PD1 could be useful to treat pruritus associated with different skin injuries.
Collapse
Affiliation(s)
- Kenta Furutani
- Center for Translational Pain Medicine, Department of Anesthesiology, and Department of Neurobiology, Duke University Medical Center, Durham, NC 27710
| | - Ouyang Chen
- Center for Translational Pain Medicine, Department of Anesthesiology, and Department of Neurobiology, Duke University Medical Center, Durham, NC 27710
- Department of Cell Biology, Duke University Medical Center, Durham, NC 27710
| | - Aidan McGinnis
- Center for Translational Pain Medicine, Department of Anesthesiology, and Department of Neurobiology, Duke University Medical Center, Durham, NC 27710
| | - Yuqing Wang
- Center for Translational Pain Medicine, Department of Anesthesiology, and Department of Neurobiology, Duke University Medical Center, Durham, NC 27710
| | - Charles N Serhan
- Center for Experimental Therapeutics and Reperfusion Injury, Department of Anesthesiology, Perioperative and Pain Medicine, Hale Building for Transformative Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts, 02115
| | - Trond Vidar Hansen
- Department of Pharmacy, Section for Pharmaceutical Chemistry, University of Oslo, PO Box 1068 Blindern, N-0316 Oslo, Norway
| | - Ru-Rong Ji
- Center for Translational Pain Medicine, Department of Anesthesiology, and Department of Neurobiology, Duke University Medical Center, Durham, NC 27710
- Department of Cell Biology, Duke University Medical Center, Durham, NC 27710
- Department of Neurobiology, Duke University Medical Center, Durham, NC 27710
| |
Collapse
|
19
|
Hua C, Liang Q, Chen S, Zhu J, Tang Y, Chen X, Song Y, van der Veen S, Cheng H. Human umbilical cord mesenchymal stem cell treatment alleviates symptoms in an atopic dermatitis-like mouse model. Stem Cell Res Ther 2023; 14:147. [PMID: 37248497 DOI: 10.1186/s13287-023-03365-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Accepted: 05/04/2023] [Indexed: 05/31/2023] Open
Abstract
BACKGROUND Atopic dermatitis (AD) is one of the most common immune and inflammatory skin disorders, leading to insufferable itching and skin abnormalities that seriously affect life quality of patients. There are still huge unmet needs for long-term and effective disease control, despite currently available therapies. Evidenced by some preclinical and clinical studies of AD treatment with stem cells, stem cell treatment could significantly and effectively ameliorate AD symptoms. OBJECTIVES To elucidate underlying mechanisms of how stem cells therapy alleviates AD-like symptoms. METHODS An AD-like mouse model was constructed and treated with mesenchymal stem cells (MSCs) subcutaneously or subcutaneously combined with intravenously. The differentially expressed genes were sorted out from RNA sequencing results of dorsal skin and blood. RESULTS Two injection routes of MSCs could alleviate AD-like symptoms and pathologic changes of the skin and immune organs. RNA sequencing of dorsal skin sections and blood provided gene expression signatures for amelioration of skin defects, inflammatory and immune modulation by MSCs, as well as common AD molecular markers for the skin and blood, which may benefit for clinical diagnosis. IL-1β and its signaling pathway were specifically found to be associated with the development of AD-like dermatitis lesions. MSC treatment effectively inhibited the JAK-STAT pathway and receptors of IL-4, IL-13, IL-17, and IgE. CONCLUSIONS MSC therapy could regulate abnormal immune and inflammatory status in AD. Mechanistic exploration will contribute to the development of personalized AD treatment based on MSCs.
Collapse
Affiliation(s)
- Chunting Hua
- Department of Dermatology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Qichang Liang
- Department of Dermatology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Siji Chen
- Department of Dermatology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Jiang Zhu
- Department of Dermatology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Yi Tang
- Department of Dermatology, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, China
| | - Xianzhen Chen
- Department of Dermatology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Yinjing Song
- Department of Dermatology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Stijn van der Veen
- Department of Dermatology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China.
- Department of Microbiology, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, School of Medicine, Zhejiang University, Hangzhou, China.
| | - Hao Cheng
- Department of Dermatology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China.
| |
Collapse
|
20
|
Koumaki D, Gregoriou S, Evangelou G, Krasagakis K. Pruritogenic Mediators and New Antipruritic Drugs in Atopic Dermatitis. J Clin Med 2023; 12:2091. [PMID: 36983094 PMCID: PMC10054239 DOI: 10.3390/jcm12062091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 02/27/2023] [Accepted: 03/01/2023] [Indexed: 03/30/2023] Open
Abstract
Atopic dermatitis (AD) is a common highly pruritic chronic inflammatory skin disorder affecting 5-20% of children worldwide, while the prevalence in adults varies from 7 to 10%. Patients with AD experience intense pruritus that could lead to sleep disturbance and impaired quality of life. Here, we analyze the pathophysiology of itchiness in AD. We extensively review the histamine-dependent and histamine-independent pruritogens. Several receptors, substance P, secreted molecules, chemokines, and cytokines are involved as mediators in chronic itch. We also, summarize the new emerging antipruritic drugs in atopic dermatitis.
Collapse
Affiliation(s)
- Dimitra Koumaki
- Dermatology Department, University Hospital of Heraklion, 71110 Heraklion, Greece
| | - Stamatios Gregoriou
- Department of Dermatology and Venereology, Andreas Sygros Hospital, Medical School of Athens, National and Kapodistrian University of Athens, 16121 Athens, Greece
| | - George Evangelou
- Dermatology Department, University Hospital of Heraklion, 71110 Heraklion, Greece
| | | |
Collapse
|
21
|
Hu X, Du L, Liu S, Lan Z, Zang K, Feng J, Zhao Y, Yang X, Xie Z, Wang PL, Ver Heul AM, Chen L, Samineni VK, Wang YQ, Lavine KJ, Gereau RW, Wu GF, Hu H. A TRPV4-dependent neuroimmune axis in the spinal cord promotes neuropathic pain. J Clin Invest 2023; 133:e161507. [PMID: 36701202 PMCID: PMC9974096 DOI: 10.1172/jci161507] [Citation(s) in RCA: 33] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Accepted: 01/12/2023] [Indexed: 01/27/2023] Open
Abstract
Microglia, resident macrophages of the CNS, are essential to brain development, homeostasis, and disease. Microglial activation and proliferation are hallmarks of many CNS diseases, including neuropathic pain. However, molecular mechanisms that govern the spinal neuroimmune axis in the setting of neuropathic pain remain incompletely understood. Here, we show that genetic ablation or pharmacological blockade of transient receptor potential vanilloid type 4 (TRPV4) markedly attenuated neuropathic pain-like behaviors in a mouse model of spared nerve injury. Mechanistically, microglia-expressed TRPV4 mediated microglial activation and proliferation and promoted functional and structural plasticity of excitatory spinal neurons through release of lipocalin-2. Our results suggest that microglial TRPV4 channels reside at the center of the neuroimmune axis in the spinal cord, which transforms peripheral nerve injury into central sensitization and neuropathic pain, thereby identifying TRPV4 as a potential new target for the treatment of chronic pain.
Collapse
Affiliation(s)
- Xueming Hu
- Department of Anesthesiology, Center for the Study of Itch and Sensory Disorders, and Washington University Pain Center and
| | - Lixia Du
- Department of Anesthesiology, Center for the Study of Itch and Sensory Disorders, and Washington University Pain Center and
| | - Shenbin Liu
- Department of Anesthesiology, Center for the Study of Itch and Sensory Disorders, and Washington University Pain Center and
| | - Zhou Lan
- Department of Anesthesiology, Center for the Study of Itch and Sensory Disorders, and Washington University Pain Center and
| | - Kaikai Zang
- Department of Anesthesiology, Center for the Study of Itch and Sensory Disorders, and Washington University Pain Center and
| | - Jing Feng
- Department of Anesthesiology, Center for the Study of Itch and Sensory Disorders, and Washington University Pain Center and
| | - Yonghui Zhao
- Department of Anesthesiology, Center for the Study of Itch and Sensory Disorders, and Washington University Pain Center and
| | - Xingliang Yang
- Department of Anesthesiology, Center for the Study of Itch and Sensory Disorders, and Washington University Pain Center and
| | - Zili Xie
- Department of Anesthesiology, Center for the Study of Itch and Sensory Disorders, and Washington University Pain Center and
| | - Peter L. Wang
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Aaron M. Ver Heul
- Department of Anesthesiology, Center for the Study of Itch and Sensory Disorders, and Washington University Pain Center and
| | - Lvyi Chen
- Department of Anesthesiology, Center for the Study of Itch and Sensory Disorders, and Washington University Pain Center and
| | - Vijay K. Samineni
- Department of Anesthesiology, Center for the Study of Itch and Sensory Disorders, and Washington University Pain Center and
| | - Yan-Qing Wang
- Institute of Acupuncture and Moxibustion and Institute of Integrative Medicine; Department of Integrative Medicine and Neurobiology, School of Basic Medical Science; and State Key Laboratory of Medical Neurobiology, Institutes of Brain Science, Fudan University, Shanghai, China
| | - Kory J. Lavine
- Department of Internal Medicine, Cardiovascular Division and
| | - Robert W. Gereau
- Department of Anesthesiology, Center for the Study of Itch and Sensory Disorders, and Washington University Pain Center and
| | - Gregory F. Wu
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, Missouri, USA
- Department of Neurology, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Hongzhen Hu
- Department of Anesthesiology, Center for the Study of Itch and Sensory Disorders, and Washington University Pain Center and
| |
Collapse
|
22
|
Chen O, He Q, Han Q, Furutani K, Gu Y, Olexa M, Ji RR. Mechanisms and treatments of neuropathic itch in a mouse model of lymphoma. J Clin Invest 2023; 133:160807. [PMID: 36520531 PMCID: PMC9927942 DOI: 10.1172/jci160807] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022] Open
Abstract
Our understanding of neuropathic itch is limited due to a lack of relevant animal models. Patients with cutaneous T cell lymphoma (CTCL) experience severe itching. Here, we characterize a mouse model of chronic itch with remarkable lymphoma growth, immune cell accumulation, and persistent pruritus. Intradermal CTCL inoculation produced time-dependent changes in nerve innervations in lymphoma-bearing skin. In the early phase (20 days), CTCL caused hyperinnervations in the epidermis. However, chronic itch was associated with loss of epidermal nerve fibers in the late phases (40 and 60 days). CTCL was also characterized by marked nerve innervations in mouse lymphoma. Blockade of C-fibers reduced pruritus at early and late phases, whereas blockade of A-fibers only suppressed late-phase itch. Intrathecal (i.t.) gabapentin injection reduced late-phase, but not early-phase, pruritus. IL-31 was upregulated in mouse lymphoma, whereas its receptor Il31ra was persistently upregulated in Trpv1-expressing sensory neurons in mice with CTCL. Intratumoral anti-IL-31 treatment effectively suppressed CTCL-induced scratching and alloknesis (mechanical itch). Finally, i.t. administration of a TLR4 antagonist attenuated pruritus in early and late phases and in both sexes. Collectively, we have established a mouse model of neuropathic and cancer itch with relevance to human disease. Our findings also suggest distinct mechanisms underlying acute, chronic, and neuropathic itch.
Collapse
Affiliation(s)
- Ouyang Chen
- Center for Translational Pain Medicine, Department of Anesthesiology,,Department of Cell Biology, and
| | - Qianru He
- Center for Translational Pain Medicine, Department of Anesthesiology
| | - Qingjian Han
- Center for Translational Pain Medicine, Department of Anesthesiology
| | - Kenta Furutani
- Center for Translational Pain Medicine, Department of Anesthesiology
| | - Yun Gu
- Center for Translational Pain Medicine, Department of Anesthesiology
| | - Madelynne Olexa
- Center for Translational Pain Medicine, Department of Anesthesiology
| | - Ru-Rong Ji
- Center for Translational Pain Medicine, Department of Anesthesiology,,Department of Cell Biology, and,Department of Neurobiology, Duke University Medical Center, Durham, North Carolina, USA
| |
Collapse
|
23
|
Shiratori-Hayashi M, Tsuda M. IP 3R1-dependent astrocyte calcium signaling in chronic itch. Neurosci Res 2023; 187:40-44. [PMID: 36181909 DOI: 10.1016/j.neures.2022.09.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 09/27/2022] [Indexed: 10/14/2022]
Abstract
Astrocytes, the most abundant type of glial cell, are electrically non-excitable cells that use intracellular calcium (Ca2+) for functional regulation. Changes in intracellular Ca2+ concentration play important roles in the central nervous system (CNS), as they are involved in the release of gliotransmitters and the control of extracellular ion concentrations, thereby affecting the regulation of neuronal excitability, CNS homeostasis, and behavior. Intracellular calcium mobilization in astrocytes is known to be mediated via inositol 1,4,5-trisphosphate receptors (IP3Rs), particularly IP3R2, and its association with CNS pathogenesis has been widely reported. In addition, the existence of IP3R2-independent calcium signaling has recently been postulated; however, the detailed mechanisms and its role in astrocyte functions and CNS pathogenesis are still poorly understood. In this paper, we describe the putative mechanisms underlying IP3R1-dependent calcium signaling in astrocytes and its effects on the reactive state, compare this signaling with IP3R2-dependent calcium signaling, and discuss its contribution to chronic itch-like behavior.
Collapse
Affiliation(s)
- Miho Shiratori-Hayashi
- Department of Molecular and System Pharmacology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan.
| | - Makoto Tsuda
- Department of Molecular and System Pharmacology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan; Kyushu University Institute for Advanced Study, Fukuoka, Japan.
| |
Collapse
|
24
|
Gao X, Wang Z, Du L. Glial Cells and Itch: Possible Targets for Novel Antipruritic Therapies. ACS Chem Neurosci 2023; 14:331-339. [PMID: 36655585 DOI: 10.1021/acschemneuro.2c00638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Glial cells, which are the non-neuronal cells of the nervous system, play essential roles in brain development, homeostasis, and diseases. Glial cells have attracted attention because of their active involvement in many neurological disorders. In recent years, substantial progress has been made in our understanding of the roles of glial cells in the pathogenesis of itch. Mechanistically, central and peripheral glial cells modulate acute and chronic pruritus via different mechanisms. In this review, we present the current knowledge about the involvement of glial cells in the modulation of itch processing and the mechanism of glial cell activation under itch stimuli. Targeting glial cells may provide novel approaches for itch therapy.
Collapse
Affiliation(s)
- Xinyi Gao
- School of Basic Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Zhifei Wang
- School of Basic Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Lixia Du
- Department of Biochemistry, School of Basic Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| |
Collapse
|
25
|
Zhang TT, Guo SS, Wang HY, Jing Q, Yi X, Hu ZH, Yu XR, Xu TL, Liu MG, Zhao X. An Anterior Cingulate Cortex-to-Midbrain Projection Controls Chronic Itch in Mice. Neurosci Bull 2022; 39:793-807. [PMID: 36528690 PMCID: PMC10169993 DOI: 10.1007/s12264-022-00996-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 08/26/2022] [Indexed: 12/23/2022] Open
Abstract
AbstractItch is an unpleasant sensation that provokes the desire to scratch. While acute itch serves as a protective system to warn the body of external irritating agents, chronic itch is a debilitating but poorly-treated clinical disease leading to repetitive scratching and skin lesions. However, the neural mechanisms underlying the pathophysiology of chronic itch remain mysterious. Here, we identified a cell type-dependent role of the anterior cingulate cortex (ACC) in controlling chronic itch-related excessive scratching behaviors in mice. Moreover, we delineated a neural circuit originating from excitatory neurons of the ACC to the ventral tegmental area (VTA) that was critically involved in chronic itch. Furthermore, we demonstrate that the ACC→VTA circuit also selectively modulated histaminergic acute itch. Finally, the ACC neurons were shown to predominantly innervate the non-dopaminergic neurons of the VTA. Taken together, our findings uncover a cortex–midbrain circuit for chronic itch-evoked scratching behaviors and shed novel insights on therapeutic intervention.
Collapse
Affiliation(s)
- Ting-Ting Zhang
- Department of Anesthesiology, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, 200072, China
| | - Su-Shan Guo
- Department of Anatomy and Physiology, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Hui-Ying Wang
- Department of Anesthesiology, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, 200072, China
| | - Qi Jing
- Department of Anesthesiology, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, 200072, China
| | - Xin Yi
- Department of Anatomy and Physiology, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Zi-Han Hu
- Department of Anesthesiology, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, 200072, China
| | - Xin-Ren Yu
- Department of Anesthesiology, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, 200072, China
| | - Tian-Le Xu
- Department of Anatomy and Physiology, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
- Center for Brain Science of Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, China
| | - Ming-Gang Liu
- Department of Anatomy and Physiology, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China.
- Center for Brain Science of Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, China.
| | - Xuan Zhao
- Department of Anesthesiology, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, 200072, China.
| |
Collapse
|
26
|
Huang IH, Chung WH, Wu PC, Chen CB. JAK-STAT signaling pathway in the pathogenesis of atopic dermatitis: An updated review. Front Immunol 2022; 13:1068260. [PMID: 36569854 PMCID: PMC9773077 DOI: 10.3389/fimmu.2022.1068260] [Citation(s) in RCA: 48] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Accepted: 11/22/2022] [Indexed: 12/13/2022] Open
Abstract
Atopic dermatitis (AD) is a chronic, inflammatory, pruritic form of dermatosis with heterogeneous manifestations that can substantially affect patients' quality of life. AD has a complex pathogenesis, making treatment challenging for dermatologists. The Janus kinase (JAK)-signal transducer and activator of transcription (STAT) pathway plays a central role in modulating multiple immune axes involved in the immunopathogenesis of AD. In particular, Th2 cytokines, including interleukin (IL)-4, IL-5, IL-13, IL-31, and thymic stromal lymphopoietin, which contribute to the symptoms of chronic inflammation and pruritus in AD, are mediated by JAK-STAT signal transduction. Furthermore, JAK-STAT is involved in the regulation of the epidermal barrier and the modulation of peripheral nerves related to the transduction of pruritus. Targeting the JAK-STAT pathway may attenuate these signals and show clinical efficacy through the suppression of various immune pathways associated with AD. Topical and oral JAK inhibitors with variable selectivity have emerged as promising therapeutic options for AD. Notably, topical ruxolitinib, oral upadacitinib, and oral abrocitinib were approved by the U.S. Food and Drug Administration for treating patients with AD. Accordingly, the present study reviewed the role of JAK-STAT pathways in the pathogenesis of AD and explored updated applications of JAK inhibitors in treating AD.
Collapse
Affiliation(s)
- I-Hsin Huang
- Drug Hypersensitivity Clinical and Research Center, Chang Gung Memorial Hospital, Linkou, Taipei, and Keelung, Taoyuan, Taiwan,Department of Dermatology, Chang Gung Memorial Hospital, Linkou, Taipei and Keelung, Taiwan,Research Center of Big Data and Meta-analysis, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan
| | - Wen-Hung Chung
- Drug Hypersensitivity Clinical and Research Center, Chang Gung Memorial Hospital, Linkou, Taipei, and Keelung, Taoyuan, Taiwan,Department of Dermatology, Chang Gung Memorial Hospital, Linkou, Taipei and Keelung, Taiwan,Cancer Vaccine and Immune Cell Therapy Core Laboratory, Chang Gung Memorial Hospital, Linkou, Taiwan,Chang Gung Immunology Consortium, Chang Gung Memorial Hospital, Linkou, and Chang Gung University, Taoyuan, Taiwan,Department of Dermatology, Xiamen Chang Gung Hospital, Xiamen, China,Xiamen Chang Gung Allergology Consortium, Xiamen, Xiamen Chang Gung Hospital, Xiamen, China,College of Medicine, Chang Gung University, Taoyuan, Taiwan,Whole-Genome Research Core Laboratory of Human Diseases, Chang Gung Memorial Hospital, Keelung, Taiwan,Immune-Oncology Center of Excellence, Chang Gung Memorial Hospital, Linkou, Taiwan,Genomic Medicine Core Laboratory, Chang Gung Memorial Hospital, Linkou, Taiwan
| | - Po-Chien Wu
- Drug Hypersensitivity Clinical and Research Center, Chang Gung Memorial Hospital, Linkou, Taipei, and Keelung, Taoyuan, Taiwan,Department of Dermatology, Chang Gung Memorial Hospital, Linkou, Taipei and Keelung, Taiwan,Research Center of Big Data and Meta-analysis, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan
| | - Chun-Bing Chen
- Drug Hypersensitivity Clinical and Research Center, Chang Gung Memorial Hospital, Linkou, Taipei, and Keelung, Taoyuan, Taiwan,Department of Dermatology, Chang Gung Memorial Hospital, Linkou, Taipei and Keelung, Taiwan,Cancer Vaccine and Immune Cell Therapy Core Laboratory, Chang Gung Memorial Hospital, Linkou, Taiwan,Chang Gung Immunology Consortium, Chang Gung Memorial Hospital, Linkou, and Chang Gung University, Taoyuan, Taiwan,Department of Dermatology, Xiamen Chang Gung Hospital, Xiamen, China,Xiamen Chang Gung Allergology Consortium, Xiamen, Xiamen Chang Gung Hospital, Xiamen, China,College of Medicine, Chang Gung University, Taoyuan, Taiwan,Whole-Genome Research Core Laboratory of Human Diseases, Chang Gung Memorial Hospital, Keelung, Taiwan,Immune-Oncology Center of Excellence, Chang Gung Memorial Hospital, Linkou, Taiwan,Genomic Medicine Core Laboratory, Chang Gung Memorial Hospital, Linkou, Taiwan,Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan,School of Medicine, National Tsing Hua University, Hsinchu, Taiwan,*Correspondence: Chun-Bing Chen,
| |
Collapse
|
27
|
Moriyama M, Konno M, Serizawa K, Yuzawa N, Majima Y, Hayashi I, Suzuki T, Kainoh M. Anti-pruritic effect of isothiocyanates: Potential involvement of toll-like receptor 3 signaling. Pharmacol Res Perspect 2022; 10:e01038. [PMID: 36507603 PMCID: PMC9741980 DOI: 10.1002/prp2.1038] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 11/16/2022] [Indexed: 12/14/2022] Open
Abstract
The innate immune system has an emerging role as a mediator of neuro-immune communication and a therapeutic target for itch. Toll-like receptor 3 (TLR3) plays an important role in itch, as shown in TLR3 knock-out mice. In this study, to evaluate effects of TLR3 inhibitors on histamine-independent itch, we used two kinds of isothiocyanate (ITC). Both phenethyl isothiocyanate (PEITC) and sulforaphane (SFN) inhibited Poly I:C (PIC)-induced signaling in the RAW264.7 cell line. We then investigated the anti-pruritic effect of these compounds on PIC- and chloroquine (CQ)-induced scratching behavior. PEITC and SFN both suppressed PIC-evoked scratching behavior in mice, and PEITC also inhibited CQ-induced acute itch. Finally, we examined the oxazolone-induced chronic itch model in mice. Surprisingly, oral dosing of both compounds suppressed scratching behaviors that were observed in mice. Our findings demonstrate that TLR3 is a critical mediator in acute and chronic itch transduction in mice and may be a promising therapeutic target for pruritus in human skin disorders. It is noteworthy that SFN has potential for use as an antipruritic as it is a phytochemical that is used as a supplement.
Collapse
Affiliation(s)
- Masaki Moriyama
- Pharmaceutical Research LaboratoriesToray Industries, Inc.KamakuraKanagawaJapan
| | - Mitsuhiro Konno
- Pharmaceutical Research LaboratoriesToray Industries, Inc.KamakuraKanagawaJapan
| | - Kanako Serizawa
- Pharmaceutical Research LaboratoriesToray Industries, Inc.KamakuraKanagawaJapan
| | - Natsumi Yuzawa
- Pharmaceutical Research LaboratoriesToray Industries, Inc.KamakuraKanagawaJapan
| | - Yuki Majima
- Pharmaceutical Research LaboratoriesToray Industries, Inc.KamakuraKanagawaJapan
| | - Ikuo Hayashi
- Pharmaceutical Research LaboratoriesToray Industries, Inc.KamakuraKanagawaJapan
| | - Tomohiko Suzuki
- Pharmaceutical Research LaboratoriesToray Industries, Inc.KamakuraKanagawaJapan
| | - Mie Kainoh
- Pharmaceutical Research LaboratoriesToray Industries, Inc.KamakuraKanagawaJapan
| |
Collapse
|
28
|
Uta D, Inami Y, Fukushima M, Kume T. Light-Touch-Induced Afterdischarge Firing in the Superficial Spinal Dorsal Horn Neurons in Hairless Mice with Irritant Contact Dermatitis. Biol Pharm Bull 2022; 45:1678-1683. [DOI: 10.1248/bpb.b22-00507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Daisuke Uta
- Department of Applied Pharmacology, Faculty of Pharmaceutical Sciences, University of Toyama
| | | | | | - Toshiaki Kume
- Department of Applied Pharmacology, Faculty of Pharmaceutical Sciences, University of Toyama
| |
Collapse
|
29
|
Critical Players and Therapeutic Targets in Chronic Itch. Int J Mol Sci 2022; 23:ijms23179935. [PMID: 36077340 PMCID: PMC9456029 DOI: 10.3390/ijms23179935] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 08/28/2022] [Accepted: 08/29/2022] [Indexed: 12/04/2022] Open
Abstract
Chronic itch is one of the most prominent clinical characteristics of diverse systematic diseases. It is a devastating sensation in pathological diseases. Despite its importance, there are no FDA-labelled drugs specifically geared toward chronic itch. The associated complex pathogenesis and diverse causes escalate chronic itch to being one of the top challenges in healthcare. Humanized antibodies against IL-13, IL-4, and IL-31 proved effective in treatment of itch-associated atopic dermatitis but remain to be validated in chronic itch. There are still no satisfactory anti-itch therapeutics available toward itch-related neuropeptides including GRP, BNP, SST, CGRP, and SP. The newly identified potential itch targets including OSM, NMB, glutamate, periostin, and Serpin E1 have opened new avenues for therapeutic development. Proof-of-principle studies have been successfully performed on antagonists against these proteins and their receptors in itch treatment in animal models. Their translational interventions in humans need to be evaluated. It is of great importance to summarize and compare the newly emerging knowledge on chronic itch and its pathways to promote the development of novel anti-itch therapeutics. The goal of this review is to analyze the different physiologies and pathophysiologies of itch mediators, whilst assessing their suitability as new targets and discussing future therapeutic development.
Collapse
|
30
|
Saeki H, Ohya Y, Furuta J, Arakawa H, Ichiyama S, Katsunuma T, Katoh N, Tanaka A, Tsunemi Y, Nakahara T, Nagao M, Narita M, Hide M, Fujisawa T, Futamura M, Masuda K, Matsubara T, Murota H, Yamamoto-Hanada K. English Version of Clinical Practice Guidelines for the Management of Atopic Dermatitis 2021. J Dermatol 2022; 49:e315-e375. [PMID: 35996152 DOI: 10.1111/1346-8138.16527] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 06/03/2022] [Accepted: 06/17/2022] [Indexed: 11/29/2022]
Abstract
This is the English version of the Clinical Practice Guidelines for the Management of Atopic Dermatitis 2021. Atopic dermatitis (AD) is a disease characterized by relapsing eczema with pruritus as a primary lesion. In Japan, from the perspective of evidence-based medicine, the current strategies for the treatment of AD consist of three primary measures: (i) use of topical corticosteroids, tacrolimus ointment, and delgocitinib ointment as the main treatment of the inflammation; (ii) topical application of emollients to treat the cutaneous barrier dysfunction; and (iii) avoidance of apparent exacerbating factors, psychological counseling, and advice about daily life. In the present revised guidelines, descriptions of three new drugs, namely, dupilumab, delgocitinib, and baricitinib, have been added. The guidelines present recommendations to review clinical research articles, evaluate the balance between the advantages and disadvantages of medical activities, and optimize medical activity-related patient outcomes with respect to several important points requiring decision-making in clinical practice.
Collapse
Affiliation(s)
- Hidehisa Saeki
- Department of Dermatology, Nippon Medical School, Tokyo, Japan
| | - Yukihiro Ohya
- Allergy Center, National Center for Child Health and Development, Tokyo, Japan
| | - Junichi Furuta
- Medical Informatics and Management, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Hirokazu Arakawa
- Kitakanto Allergy Research Institute, Kibounoie Hospital, Midori, Japan
| | - Susumu Ichiyama
- Department of Dermatology, Nippon Medical School, Tokyo, Japan
| | - Toshio Katsunuma
- Department of Pediatrics, The Jikei University Daisan Hospital, Tokyo, Japan
| | - Norito Katoh
- Department of Dermatology, Kyoto Prefectural University of Medicine Graduate School of Medical Science, Kyoto, Japan
| | - Akio Tanaka
- Department of Dermatology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Yuichiro Tsunemi
- Department of Dermatology, Saitama Medical University, Saitama, Japan
| | - Takeshi Nakahara
- Department of Dermatology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Mizuho Nagao
- Allergy Center, National Hospital Organization Mie National Hospital, Tsu, Japan
| | - Masami Narita
- Department of Pediatrics, Faculty of Medicine, Kyorin University, Tokyo, Japan
| | - Michihiro Hide
- Department of Dermatology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan.,Department of Dermatology, Hiroshima Citizens Hospital, Hiroshima, Japan
| | - Takao Fujisawa
- Allergy Center, National Hospital Organization Mie National Hospital, Tsu, Japan
| | - Masaki Futamura
- Division of Pediatrics, National Hospital Organization Nagoya Medical Center, Nagoya, Japan
| | - Koji Masuda
- Department of Dermatology, Kyoto Prefectural University of Medicine Graduate School of Medical Science, Kyoto, Japan
| | - Tomoyo Matsubara
- Department of Pediatrics, Dokkyo Medical University Saitama Medical Center, Saitama, Japan
| | - Hiroyuki Murota
- Department of Dermatology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | | |
Collapse
|
31
|
Hirrlinger J, Nimmerjahn A. A perspective on astrocyte regulation of neural circuit function and animal behavior. Glia 2022; 70:1554-1580. [PMID: 35297525 PMCID: PMC9291267 DOI: 10.1002/glia.24168] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 01/19/2022] [Accepted: 02/27/2022] [Indexed: 12/16/2022]
Abstract
Studies over the past two decades have demonstrated that astrocytes are tightly associated with neurons and play pivotal roles in neural circuit development, operation, and adaptation in health and disease. Nevertheless, precisely how astrocytes integrate diverse neuronal signals, modulate neural circuit structure and function at multiple temporal and spatial scales, and influence animal behavior or disease through aberrant excitation and molecular output remains unclear. This Perspective discusses how new and state-of-the-art approaches, including fluorescence indicators, opto- and chemogenetic actuators, genetic targeting tools, quantitative behavioral assays, and computational methods, might help resolve these longstanding questions. It also addresses complicating factors in interpreting astrocytes' role in neural circuit regulation and animal behavior, such as their heterogeneity, metabolism, and inter-glial communication. Research on these questions should provide a deeper mechanistic understanding of astrocyte-neuron assemblies' role in neural circuit function, complex behaviors, and disease.
Collapse
Affiliation(s)
- Johannes Hirrlinger
- Carl-Ludwig-Institute for Physiology, Medical Faculty,
University of Leipzig, Leipzig, Germany
- Department of Neurogenetics, Max-Planck-Institute for
Multidisciplinary Sciences, Göttingen, Germany
| | - Axel Nimmerjahn
- Waitt Advanced Biophotonics Center, The Salk Institute for
Biological Studies, La Jolla, California
| |
Collapse
|
32
|
Xia Y, Chen J, Ma T, Meng X, Han X, Li D. Maternal DBP exposure promotes synaptic formation in offspring by activating astrocytes via the AKT/NF-κB/IL-6/JAK2/STAT3 signaling pathway. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 829:154437. [PMID: 35278568 DOI: 10.1016/j.scitotenv.2022.154437] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 03/04/2022] [Accepted: 03/06/2022] [Indexed: 06/14/2023]
Abstract
It has been demonstrated that activated astrocytes in the hypothalamus could disrupt GnRH secretion in offspring after maternal di-n-butyl phthalate (DBP) exposure, indicating that the effect of DBP on astrocyte activation and crosstalk between astrocytes and neurons is still worthy of further investigation. In this study, pregnant mice were intragastrically administered DBP dissolved in corn oil from gestational days (GD) 12.5-21.5. Maternal DBP exposure resulted in hippocampal astrocyte activation, abnormal synaptic formation, and reduced autonomic and exploratory behavior in offspring on postnatal day (PND) 22. Further studies identified that mono-n-butyl phthalate (MBP) induced astrocyte activation and proliferation by activating the AKT/NF-κB/IL-6/JAK2/STAT3 signaling pathway. Moreover, upregulated thrombospondin 1 (TSP1) in activated astrocytes regulated synaptic-related protein expression. This study highlights the neurotoxicity of maternal DBP exposure to offspring, which provides new insights into identifying potential molecular targets for the treatment of diseases related to neurological development disorders in children.
Collapse
Affiliation(s)
- Yunhui Xia
- Immunology and Reproduction Biology Laboratory & State Key Laboratory of Analytical Chemistry for Life Science, Medical School, Nanjing University, Nanjing, Jiangsu 210093, China; Jiangsu Key Laboratory of Molecular Medicine, Nanjing University, Nanjing, Jiangsu 210093, China
| | - Junhan Chen
- Immunology and Reproduction Biology Laboratory & State Key Laboratory of Analytical Chemistry for Life Science, Medical School, Nanjing University, Nanjing, Jiangsu 210093, China; Jiangsu Key Laboratory of Molecular Medicine, Nanjing University, Nanjing, Jiangsu 210093, China
| | - Tan Ma
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou 225001, China; Jiangsu Key Laboratory of Experimental & Translational Non-coding RNA Research, Yangzhou 225001, China
| | - Xiannan Meng
- Cancer Institute, Xuzhou Medical University, Xuzhou, China; Center of Clinical Oncology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Xiaodong Han
- Immunology and Reproduction Biology Laboratory & State Key Laboratory of Analytical Chemistry for Life Science, Medical School, Nanjing University, Nanjing, Jiangsu 210093, China; Jiangsu Key Laboratory of Molecular Medicine, Nanjing University, Nanjing, Jiangsu 210093, China
| | - Dongmei Li
- Immunology and Reproduction Biology Laboratory & State Key Laboratory of Analytical Chemistry for Life Science, Medical School, Nanjing University, Nanjing, Jiangsu 210093, China; Jiangsu Key Laboratory of Molecular Medicine, Nanjing University, Nanjing, Jiangsu 210093, China.
| |
Collapse
|
33
|
Mechanisms and therapeutic targets for neuropathic itch. Curr Opin Neurobiol 2022; 75:102573. [PMID: 35689909 DOI: 10.1016/j.conb.2022.102573] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 04/05/2022] [Accepted: 05/06/2022] [Indexed: 01/04/2023]
Abstract
Neuropathic pruritus conditions arise from structural and/or functional damage of the peripheral or central nervous system. Novel findings of pruritus specific mediators and pathways strengthen the specificity theory of pruritus transmission, however electrophysiological studies suggest that focal activation of nociceptors and distinct discharge patterns of primary afferents also contribute to the development of the sensation of pruritus. A complex interplay between excitatory and inhibitory interneurons at spinal level, non-neuronal cells and descending modulation from upper centers contributes to neuronal sensitization and clinically to the chronicity of pruritus, as well as accompanying phenomena such as alloknesis and hyperknesis. Several topical, systemic and non-pharmacological therapeutic approaches directed at distinct targets are currently available.
Collapse
|
34
|
Cytokines and chemokines modulation of itch. Neuroscience 2022; 495:74-85. [PMID: 35660453 DOI: 10.1016/j.neuroscience.2022.05.035] [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: 03/26/2022] [Revised: 05/07/2022] [Accepted: 05/26/2022] [Indexed: 12/31/2022]
Abstract
Itch (pruritus) is a common cutaneous symptom widely associated with many skin complaints, and chronic itch can be a severe clinical problem. The onset and perpetuation of itch are linked to cytokines, such as interleukin (IL)-31, IL-4, IL-13, IL-33, thymic stromal lymphopoietin, and tumor necrosis factor-alpha, and chemokines, such as chemokine (C-C motif) ligand 2 and C-X-C motif chemokine ligand 10. This review highlights research that has attempted to determine the attributes of various cytokines and chemokines concerning the development and modulation of itch. Through such research, clinical approaches targeting cytokines and/or chemokines may arise, which may further the development of itch therapeutics.
Collapse
|
35
|
Bieber T, Paller AS, Kabashima K, Feely M, Rueda MJ, Ross Terres JA, Wollenberg A. Atopic dermatitis: pathomechanisms and lessons learned from novel systemic therapeutic options. J Eur Acad Dermatol Venereol 2022; 36:1432-1449. [PMID: 35575442 DOI: 10.1111/jdv.18225] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 04/13/2022] [Indexed: 12/01/2022]
Abstract
Atopic dermatitis (AD) is a chronic, heterogenous, inflammatory skin disorder associated with a high skin-related health burden, typically starting in childhood and often persisting into adulthood. AD is characterized by a wide range of clinical phenotypes, reflecting multiple underlying pathophysiological mechanisms and interactions between genetics, immune system dysregulation, and environmental factors. In this review, we describe the diverse cellular and molecular mechanisms involved in AD, including the critical role of T cell-driven inflammation, primarily via T helper (Th) 2- and Th17-derived cytokines, many of which are mediated by the Janus kinase (JAK) signaling pathway. These local inflammatory processes interact with sensory neuronal pathways, contributing to the clinical manifestations of AD, including itch, pain, and sleep disturbance. The recent elucidation of the molecular pathways involved in AD has allowed treatment strategies to evolve from broad-acting systemic immunosuppressive therapies to more targeted agents, including JAK inhibitors and cytokine-specific biologic agents. Evidence from the clinical development of these targeted therapies has reinforced and expanded our understanding of the pathophysiological mechanisms underlying AD and holds promise for individualized treatment strategies tailored to specific AD subtypes.
Collapse
Affiliation(s)
- T Bieber
- Department of Dermatology and Allergy, University Medical Center, Bonn, Germany.,Christine Kühne-Center for Allergy Research and Education, Davos, Switzerland
| | - A S Paller
- Department of Dermatology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - K Kabashima
- Department Dermatology, Kyoto University School of Medicine, Kyoto, Japan
| | - M Feely
- Eli Lilly and Company, Indianapolis, IN, USA.,Department of Dermatology, Mount Sinai Hospital, New York, NY, USA
| | - M J Rueda
- Eli Lilly and Company, Indianapolis, IN, USA
| | | | - A Wollenberg
- Department of Dermatology and Allergy, University Hospital, Ludwig Maximillian University, Munich, Germany.,Vrije Universiteit Brussel (VUB), Universitair Ziekenhuis Brussel (UZ Brussel), Department of Dermatology, Brussels, Belgium
| |
Collapse
|
36
|
Kanehisa K, Koga K, Maejima S, Shiraishi Y, Asai K, Shiratori-Hayashi M, Xiao MF, Sakamoto H, Worley PF, Tsuda M. Neuronal pentraxin 2 is required for facilitating excitatory synaptic inputs onto spinal neurons involved in pruriceptive transmission in a model of chronic itch. Nat Commun 2022; 13:2367. [PMID: 35501343 PMCID: PMC9061767 DOI: 10.1038/s41467-022-30089-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 04/14/2022] [Indexed: 11/08/2022] Open
Abstract
An excitatory neuron subset in the spinal dorsal horn (SDH) that expresses gastrin-releasing peptide receptors (GRPR) is critical for pruriceptive transmission. Here, we show that glutamatergic excitatory inputs onto GRPR+ neurons are facilitated in mouse models of chronic itch. In these models, neuronal pentraxin 2 (NPTX2), an activity-dependent immediate early gene product, is upregulated in the dorsal root ganglion (DRG) neurons. Electron microscopy reveals that NPTX2 is present at presynaptic terminals connected onto postsynaptic GRPR+ neurons. NPTX2-knockout prevents the facilitation of synaptic inputs to GRPR+ neurons, and repetitive scratching behavior. DRG-specific NPTX2 expression rescues the impaired behavioral phenotype in NPTX2-knockout mice. Moreover, ectopic expression of a dominant-negative form of NPTX2 in DRG neurons reduces chronic itch-like behavior in mice. Our findings indicate that the upregulation of NPTX2 expression in DRG neurons contributes to the facilitation of glutamatergic inputs onto GRPR+ neurons under chronic itch-like conditions, providing a potential therapeutic target.
Collapse
Affiliation(s)
- Kensho Kanehisa
- Department of Life Innovation, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, 812-8582, Japan
- Department of Molecular and System Pharmacology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, 812-8582, Japan
| | - Keisuke Koga
- Department of Life Innovation, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, 812-8582, Japan
- Department of Neurophysiology, Hyogo College of Medicine, Nishinomiya, Hyogo, 663-8501, Japan
| | - Sho Maejima
- Ushimado Marine Institute, Graduate School of Natural Science and Technology, Okayama University, 130-17 Kashino, Ushimado, Setouchi, 701-4303, Japan
| | - Yuto Shiraishi
- Department of Molecular and System Pharmacology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, 812-8582, Japan
| | - Konatsu Asai
- Department of Molecular and System Pharmacology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, 812-8582, Japan
| | - Miho Shiratori-Hayashi
- Department of Life Innovation, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, 812-8582, Japan
- Department of Molecular and System Pharmacology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, 812-8582, Japan
| | - Mei-Fang Xiao
- The Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, United States
| | - Hirotaka Sakamoto
- Ushimado Marine Institute, Graduate School of Natural Science and Technology, Okayama University, 130-17 Kashino, Ushimado, Setouchi, 701-4303, Japan
| | - Paul F Worley
- The Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, United States
| | - Makoto Tsuda
- Department of Life Innovation, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, 812-8582, Japan.
- Department of Molecular and System Pharmacology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, 812-8582, Japan.
| |
Collapse
|
37
|
Agelopoulos K, Pereira MP, Wiegmann H, Ständer S. Cutaneous neuroimmune crosstalk in pruritus. Trends Mol Med 2022; 28:452-462. [DOI: 10.1016/j.molmed.2022.03.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 03/03/2022] [Accepted: 03/16/2022] [Indexed: 10/18/2022]
|
38
|
Satellite Glial Cells and Neurons in Trigeminal Ganglia Are Altered in an Itch Model in Mice. Cells 2022; 11:cells11050886. [PMID: 35269508 PMCID: PMC8909456 DOI: 10.3390/cells11050886] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Revised: 02/25/2022] [Accepted: 02/26/2022] [Indexed: 02/04/2023] Open
Abstract
Itch (pruritus) is a common chronic condition with a lifetime prevalence of over 20%. The mechanisms underlying itch are poorly understood, and its therapy is difficult. There is recent evidence that following nerve injury or inflammation, intercellular communications in sensory ganglia are augmented, which may lead to abnormal neuronal activity, and hence to pain, but there is no information whether such changes take place in an itch model. We studied changes in neurons and satellite glial cells (SGCs) in trigeminal ganglia in an itch model in mice using repeated applications of 2,4,6-trinitro-1-chlorobenzene (TNCB) to the external ear over a period of 11 days. Treated mice showed augmented scratching behavior as compared with controls during the application period and for several days afterwards. Immunostaining for the activation marker glial fibrillary acidic protein in SGCs was greater by about 35% after TNCB application, and gap junction-mediated coupling between neurons increased from about 2% to 13%. The injection of gap junction blockers reduced scratching behavior, suggesting that gap junctions contribute to itch. Calcium imaging studies showed increased responses of SGCs to the pain (and presumed itch) mediator ATP. We conclude that changes in both neurons and SGCs in sensory ganglia may play a role in itch.
Collapse
|
39
|
Wang W, Li Q, Zhao Z, Liu Y, Wang Y, Xiong H, Mei Z. Paeonol Ameliorates Chronic Itch and Spinal Astrocytic Activation via CXCR3 in an Experimental Dry Skin Model in Mice. Front Pharmacol 2022; 12:805222. [PMID: 35095512 PMCID: PMC8794748 DOI: 10.3389/fphar.2021.805222] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Accepted: 12/23/2021] [Indexed: 01/13/2023] Open
Abstract
Paeonol is a bioactive phenol presents mainly in Paeonia suffruticosa Andr. (Paeoniaceae), Paeonia lactiflora Pall., and Dioscorea japonica Thunb. (Dioscoreaceae), harboring various pharmacological activities including anti-inflammatory, antioxidant, immune regulatory activity and reverse chemoresistance. Recent reports revealed paeonol exhibited good effects on chronic dermatitis, such as atopic dermatitis (AD) and psoriasis. However, whether paeonol is effective for dry skin disease and its mechanism of action still remain unclear. In this study, we analysed the effects of paeonol on a mouse model of dry skin treated with acetone-ether-water (AEW), which showed impressive activities in reducing scratching behavior and skin inflammation. To elucidate the underlying molecular targets for the anti-pruritic ability of paeonol, we screened the expression of possible chemokine pathways in the spinal cord. The expression of CXCR3 was significantly alleviated by paeonol, which increased greatly in the spinal neurons of AEW mice. In addition, treatment of paeonol significantly inhibited AEW-induced expression of astrocyte activity-dependent genes including Tlr4, Lcn2 and Hspb1 et al. The inhibitory effects of paeonol on scratching behavior and astrocytic activation in the spinal cord induced by AEW were abolished when CXCR3 was antagonized or genetically ablated. Taken together, our results indicated that paeonol can ameliorate AEW-induced inflammatory response and itching behavior, and reduce the expression of spinal astrocyte activity-dependent genes induced by AEW, which are driven by CXCR3.
Collapse
Affiliation(s)
- Wen Wang
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan, China.,Institute of Ethnomedicine, South-Central University for Nationalities, Wuhan, China
| | - Qiaoyun Li
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan, China.,Institute of Ethnomedicine, South-Central University for Nationalities, Wuhan, China
| | - Zhongqiu Zhao
- Washington University School of Medicine, St. Louis, MO, United States.,Barnes-Jewish Hospital, St. Louis, MO, United States
| | - Yutong Liu
- College of Life Sciences, South-Central University for Nationalities, Wuhan, China
| | - Yi Wang
- College of Life Sciences, South-Central University for Nationalities, Wuhan, China
| | - Hui Xiong
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan, China.,Institute of Ethnomedicine, South-Central University for Nationalities, Wuhan, China
| | - Zhinan Mei
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan, China.,Institute of Ethnomedicine, South-Central University for Nationalities, Wuhan, China
| |
Collapse
|
40
|
Fei W, Wu J, Gao M, Wang Q, Zhao YY, Shan C, Shen Y, Chen G. Multilineage-differentiating stress-enduring cells alleviate atopic dermatitis-associated behaviors in mice. Stem Cell Res Ther 2021; 12:606. [PMID: 34930455 PMCID: PMC8686553 DOI: 10.1186/s13287-021-02671-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 10/25/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Pruritus is a recurring, long-lasting skin disease with few effective treatments. Many patients have unsatisfactory responses to currently available antipruritic treatments, and effective therapeutics are urgently needed to relieve symptoms. A previous study reported that mesenchymal stem cell (MSC)-mediated immune regulation could be used to treat skin inflammatory diseases. Multilineage-differentiating stress-enduring (Muse) cells are a new type of pluripotent stem cell that may also have the potential to treat inflammatory skin diseases. METHODS Muse cells were isolated from human bone marrow-derived MSCs (BMSCs) via the 8-h longterm trypsin incubation (LTT) method. Repeated use of 2,4-dinitrofluorobenzene (DNFB) induced atopic dermatitis (AD) in a mouse model. Immunofluorescence, behavior recording, and image analysis were used to evaluate the therapeutic effect of subcutaneous Muse cell injection. Real-time quantitative polymerase chain reaction (qPCR) was used to measure the expression of inflammatory factors. In vitro, wound healing and cell proliferation experiments were used to examine the effect of Muse cell supernatant on keratinocytes. RESULTS Our results showed that subcutaneous injection of Muse cells after AD model induction significantly alleviated scratching behavior in mice. The evaluation of dermatitis and photos of damaged skin on the back of the neck revealed that Muse cells reduced dermatitis, playing an active role in healing the damaged skin. The activation of spinal glial cells and scratching behavior were also reduced by Muse cell injection. In addition, we also showed that the expression levels of the inflammatory factors interleukin (IL)-6, IL-17α, and IL-33 in both the spinal cord and skin were suppressed by Muse cells. Furthermore, Muse cells not only exerted anti-inflammatory effects on lipopolysaccharide (LPS)-induced human HaCat cells but also promoted wound healing and keratinocyte proliferation. CONCLUSIONS In vivo, Muse cells could alleviate scratching symptoms, reduce epidermal inflammation, and promote wound healing. In vitro, Muse cells could also promote the migration and proliferation of keratinocytes. In summary, Muse cells may become a new therapeutic agent for the treatment of AD.
Collapse
Affiliation(s)
- WenDi Fei
- Key Laboratory of Neuroregeneration of Jiangsu and the Ministry of Education, Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, 226001, Jiangsu Province, China
| | - JunLin Wu
- Center for Basic Medical Research, Medical School of Nantong University, Nantong, 226001, Jiangsu Province, China
| | - MengDie Gao
- Key Laboratory of Neuroregeneration of Jiangsu and the Ministry of Education, Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, 226001, Jiangsu Province, China
| | - Qian Wang
- Key Laboratory of Neuroregeneration of Jiangsu and the Ministry of Education, Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, 226001, Jiangsu Province, China
| | - Ya Yu Zhao
- Key Laboratory of Neuroregeneration of Jiangsu and the Ministry of Education, Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, 226001, Jiangsu Province, China
| | - ChunLi Shan
- Department of Anesthesiology, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu Province, China
| | - Yu Shen
- Department of Dermatology, Affiliated Nantong Hospital 3 of Nantong University, Nantong, 226001, Jiangsu Province, China.
| | - Gang Chen
- Center for Basic Medical Research, Medical School of Nantong University, Nantong, 226001, Jiangsu Province, China. .,Department of Anesthesiology, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu Province, China. .,Medical School of Nantong University, Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, 226001, China.
| |
Collapse
|
41
|
Meng QT, Liu XY, Liu XT, Liu J, Munanairi A, Barry DM, Liu B, Jin H, Sun Y, Yang Q, Gao F, Wan L, Peng J, Jin JH, Shen KF, Kim R, Yin J, Tao A, Chen ZF. BNP facilitates NMB-encoded histaminergic itch via NPRC-NMBR crosstalk. eLife 2021; 10:71689. [PMID: 34919054 PMCID: PMC8789279 DOI: 10.7554/elife.71689] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Accepted: 12/16/2021] [Indexed: 11/13/2022] Open
Abstract
Histamine-dependent and -independent itch is conveyed by parallel peripheral neural pathways that express gastrin-releasing peptide (GRP) and neuromedin B (NMB), respectively, to the spinal cord of mice. B-type natriuretic peptide (BNP) has been proposed to transmit both types of itch via its receptor NPRA encoded by Npr1. However, BNP also binds to its cognate receptor, NPRC encoded by Npr3 with equal potency. Moreover, natriuretic peptides (NP) signal through the Gi-couped inhibitory cGMP pathway that is supposed to inhibit neuronal activity, raising the question of how BNP may transmit itch information. Here, we report that Npr3 expression in laminae I-II of the dorsal horn partially overlaps with NMB receptor (NMBR) that transmits histaminergic itch via Gq-couped PLCβ-Ca2+ signaling pathway. Functional studies indicate that NPRC is required for itch evoked by histamine but not chloroquine (CQ), a nonhistaminergic pruritogen. Importantly, BNP significantly facilitates scratching behaviors mediated by NMB, but not GRP. Consistently, BNP evoked Ca2+ responses in NMBR/NPRC HEK 293 cells and NMBR/NPRC dorsal horn neurons. These results reveal a previously unknown mechanism by which BNP facilitates NMB-encoded itch through a novel NPRC-NMBR cross-signaling in mice. Our studies uncover distinct modes of action for neuropeptides in transmission and modulation of itch in mice. An itch is a common sensation that makes us want to scratch. Most short-term itches are caused by histamine, a chemical that is released by immune cells following an infection or in response to an allergic reaction. Chronic itching, on the other hand, is not usually triggered by histamine, and is typically the result of neurological or skin disorders, such as atopic dermatitis. The sensation of itching is generated by signals that travel from the skin to nerve cells in the spinal cord. Studies in mice have shown that the neuropeptides responsible for delivering these signals differ depending on whether or not the itch involves histamine: GRPs (short for gastrin-releasing proteins) convey histamine-independent itches, while NMBs (short for neuromedin B) convey histamine-dependent itches. It has been proposed that another neuropeptide called BNP (short for B-type natriuretic peptide) is able to transmit both types of itch signals to the spinal cord. But it remains unclear how this signaling molecule is able to do this. To investigate, Meng, Liu, Liu, Liu et al. carried out a combination of behavioral, molecular and pharmacological experiments in mice and nerve cells cultured in a laboratory. The experiments showed that BNP alone cannot transmit the sensation of itching, but it can boost itching signals that are triggered by histamine. It is widely believed that BNP activates a receptor protein called NPRA. However, Meng et al. found that the BNP actually binds to another protein which alters the function of the receptor activated by NMBs. These findings suggest that BNP modulates rather than initiates histamine-dependent itching by enhancing the interaction between NMBs and their receptor. Understanding how itch signals travel from the skin to neurons in the spinal cord is crucial for designing new treatments for chronic itching. The work by Meng et al. suggests that treatments targeting NPRA, which was thought to be a key itch receptor, may not be effective against chronic itching, and that other drug targets need to be explored.
Collapse
Affiliation(s)
- Qing-Tao Meng
- Center for the Study of Itch and Sensory Disorders, Washington University in St. Louis, St Louis, United States
| | - Xian-Yu Liu
- Center for the Study of Itch and Sensory Disorders, Washington University in St. Louis, St Louis, United States
| | - Xue-Ting Liu
- Center for the Study of Itch and Sensory Disorders, Washington University in St. Louis, St Louis, United States
| | - Juan Liu
- Center for the Study of Itch and Sensory Disorders, Washington University in St. Louis, St Louis, United States
| | - Admire Munanairi
- Center for the Study of Itch and Sensory Disorders, Washington University in St. Louis, St Louis, United States
| | - Devin M Barry
- Center for the Study of Itch and Sensory Disorders, Washington University in St. Louis, St Louis, United States
| | - Benlong Liu
- Center for the Study of Itch and Sensory Disorders, Washington University in St. Louis, St Louis, United States
| | - Hua Jin
- Center for the Study of Itch and Sensory Disorders, Washington University in St. Louis, St Louis, United States
| | - Yu Sun
- Center for the Study of Itch and Sensory Disorders, Washington University in St. Louis, St Louis, United States
| | - Qianyi Yang
- Center for the Study of Itch and Sensory Disorders, Washington University in St. Louis, St Louis, United States
| | - Fang Gao
- Center for the Study of Itch and Sensory Disorders, Washington University in St. Louis, St Louis, United States
| | - Li Wan
- Center for the Study of Itch and Sensory Disorders, Washington University in St. Louis, St Louis, United States
| | - Jiahang Peng
- Center for the Study of Itch and Sensory Disorders, Washington University in St. Louis, St Louis, United States
| | - Jin-Hua Jin
- Center for the Study of Itch and Sensory Disorders, Washington University in St. Louis, St Louis, United States
| | - Kai-Feng Shen
- Center for the Study of Itch and Sensory Disorders, Washington University in St. Louis, St Louis, United States
| | - Ray Kim
- Center for the Study of Itch and Sensory Disorders, Washington University in St. Louis, St Louis, United States
| | - Jun Yin
- Center for the Study of Itch and Sensory Disorders, Washington University in St. Louis, St Louis, United States
| | - Ailin Tao
- Guangdong Provincial Key Laboratory of Allergy and Clinical Immunology, Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Zhou-Feng Chen
- Department of Anesthesiology, Washington University in St. Louis, St Louis, United States
| |
Collapse
|
42
|
Sympathetic Nerve Mediated Spinal Glia Activation Underlies Itch in a Cutaneous T-Cell Lymphoma Model. Neurosci Bull 2021; 38:435-439. [PMID: 34870787 DOI: 10.1007/s12264-021-00805-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Accepted: 10/01/2021] [Indexed: 10/19/2022] Open
|
43
|
Shiratori‐Hayashi M, Tsuda M. Spinal glial cells in itch modulation. Pharmacol Res Perspect 2021; 9:e00754. [PMID: 34677000 PMCID: PMC8532133 DOI: 10.1002/prp2.754] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Accepted: 02/22/2021] [Indexed: 01/02/2023] Open
Abstract
Glial cells are non-neuronal cells in the nervous system that are electrically non-excitable and outnumber neurons in humans. Glial cells have attracted attention in recent years for their active involvement in the regulation of neuronal activity, suggesting their contribution to the pathogenesis and progression of neurological diseases. Studies have shown that astrocytes, a type of glial cell, are activated in the spinal cord in response to skin inflammation and contribute to the exacerbation of chronic itch. This review summarizes the current knowledge about the role of astrocytes and other glial cells in the modulation of itch processing and the mechanism of their activation under itch conditions.
Collapse
Affiliation(s)
- Miho Shiratori‐Hayashi
- Department of Molecular and System PharmacologyGraduate School of Pharmaceutical SciencesKyushu UniversityFukuokaJapan
| | - Makoto Tsuda
- Department of Molecular and System PharmacologyGraduate School of Pharmaceutical SciencesKyushu UniversityFukuokaJapan
| |
Collapse
|
44
|
Koizumi S. Glial pharmacology in Asia & Beyond. Pharmacol Res Perspect 2021; 9:e00881. [PMID: 34676997 PMCID: PMC8532131 DOI: 10.1002/prp2.881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
- Schuichi Koizumi
- Department of NeuropharmacologyGraduate School of MedicineUniversity of YamanashiYamanashiJapan
- GLIA CenterUniversity of YamanashiYamanashiJapan
| |
Collapse
|
45
|
Miyauchi K, Ki S, Ukai M, Suzuki Y, Inoue K, Suda W, Matsui T, Ito Y, Honda K, Koseki H, Ohara O, Tanaka RJ, Okada-Hatakeyama M, Kubo M. Essential Role of STAT3 Signaling in Hair Follicle Homeostasis. Front Immunol 2021; 12:663177. [PMID: 34867936 PMCID: PMC8635990 DOI: 10.3389/fimmu.2021.663177] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 10/25/2021] [Indexed: 12/13/2022] Open
Abstract
Dominant-negative mutations associated with signal transducer and activator of transcription 3 (STAT3) signaling, which controls epithelial proliferation in various tissues, lead to atopic dermatitis in hyper IgE syndrome. This dermatitis is thought to be attributed to defects in STAT3 signaling in type 17 helper T cell specification. However, the role of STAT3 signaling in skin epithelial cells remains unclear. We found that STAT3 signaling in keratinocytes is required to maintain skin homeostasis by negatively controlling the expression of hair follicle-specific keratin genes. These expression patterns correlated with the onset of dermatitis, which was observed in specific pathogen-free conditions but not in germ-free conditions, suggesting the involvement of Toll-like receptor-mediated inflammatory responses. Thus, our study suggests that STAT3-dependent gene expression in keratinocytes plays a critical role in maintaining the homeostasis of skin, which is constantly exposed to microorganisms.
Collapse
Affiliation(s)
- Kosuke Miyauchi
- Laboratory for Cytokine Regulation, Center for Integrative Medical Science (IMS), RIKEN Yokohama Institute, Yokohama, Japan
| | - Sewon Ki
- Laboratory for Cytokine Regulation, Center for Integrative Medical Science (IMS), RIKEN Yokohama Institute, Yokohama, Japan
| | - Masao Ukai
- Laboratory for Integrated Cellular Systems, Center for Integrative Medical Science (IMS), RIKEN Yokohama Institute, Yokohama, Japan
- Graduate School of Medical Life Sciences, Yokohama City University, Yokohama, Japan
| | - Yoshie Suzuki
- Laboratory for Cytokine Regulation, Center for Integrative Medical Science (IMS), RIKEN Yokohama Institute, Yokohama, Japan
| | - Kentaro Inoue
- Laboratory for Integrated Cellular Systems, Center for Integrative Medical Science (IMS), RIKEN Yokohama Institute, Yokohama, Japan
- Department of Computer Science and Systems Engineering, Faculty of Engineering, University of Miyazaki, Miyazaki-shi, Japan
| | - Wataru Suda
- Laboratory for Microbiome science, Center for Integrative Medical Science (IMS), RIKEN Yokohama Institute, Yokohama, Japan
- Graduate School of Frontier Sciences, The University of Tokyo, Chiba, Japan
| | - Takeshi Matsui
- Laboratory for Evolutionary Cell Biology of the Skin, School of Bioscience and Biotechnology, Tokyo University of Technology, Hachioji, Japan
| | - Yoshihiro Ito
- Laboratory for Gut Homeostasis, Center for Integrative Medical Science (IMS), RIKEN Yokohama Institute, Yokohama, Japan
| | - Kenya Honda
- Laboratory for Gut Homeostasis, Center for Integrative Medical Science (IMS), RIKEN Yokohama Institute, Yokohama, Japan
- Department of Microbiology and Immunology, Keio University School of Medicine, Tokyo, Japan
| | - Haruhiko Koseki
- Disease Biology Group, RIKEN Medical Sciences Innovation Hub Program, Kanagawa, Japan
- Laboratory for Developmental Genetics, Center for Integrative Medical Science (IMS), RIKEN Yokohama Institute, Yokohama, Japan
| | - Osamu Ohara
- Laboratory for Integrative Genomics, Center for Integrative Medical Science (IMS), RIKEN Yokohama Institute, Yokohama, Japan
- Department of Applied Genomics, Kazusa DNA Research Institute, Kisarazu, Japan
| | - Reiko J. Tanaka
- Department of Bioengineering, Imperial College London, London, United Kingdom
| | - Mariko Okada-Hatakeyama
- Laboratory for Integrated Cellular Systems, Center for Integrative Medical Science (IMS), RIKEN Yokohama Institute, Yokohama, Japan
- Graduate School of Medical Life Sciences, Yokohama City University, Yokohama, Japan
- Institute for Protein Research, Osaka University, Suita-shi, Japan
| | - Masato Kubo
- Laboratory for Cytokine Regulation, Center for Integrative Medical Science (IMS), RIKEN Yokohama Institute, Yokohama, Japan
- Division of Molecular Pathology, Research Institute for Biomedical Science, Tokyo University of Science, Noda-shi, Japan
- *Correspondence: Masato Kubo,
| |
Collapse
|
46
|
Huang SH, Wu KW, Lo JJ, Wu SH. Synergic Effect of Botulinum Toxin Type A and Triamcinolone Alleviates Scar Pruritus by Modulating Epidermal Hyperinnervation: A Preliminary Report. Aesthet Surg J 2021; 41:NP1721-NP1731. [PMID: 33662123 DOI: 10.1093/asj/sjab105] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Patients often experience scar-related pruritus, which adversely affects quality of life. Triamcinolone acetonide (TAC) is widely used to treat pathologic scars, and botulinum toxin type A (BTX-A) reportedly improves scarring and associated discomfort. OBJECTIVES The aim of this study was to investigate the clinical efficacy of combining TAC and BTX-A to reduce scar itch; potential mechanisms were investigated via an animal model. METHODS For the clinical study, each scar on a patient was divided into 2 equal parts, with one part receiving TAC/BTX-A and the other TAC alone. Therapeutic interventions were administered over 3 sessions at 4-week intervals. Itch intensity was measured on a visual analog scale before each therapeutic intervention (V1, V2, V3) and 4 weeks after the last intervention (V4). For the animal model, rats were allocated into 5 groups: control, untreated burn, TAC, BTX-A, and TAC/BTX-A. We evaluated alloknesis in the right hind paw and analyzed possible molecular mechanisms. RESULTS In humans, TAC/BTX-A significantly reduced scar itch compared with TAC alone at V4 (P = 0.04). In rats, post-burn itch was mitigated at 4 weeks after treatment with TAC, BTX-A, and TAC/BTX-A (P = 0.03, P = 0.0054, and P = 0.0053, respectively). TAC/BTX-A significantly decreased the density of intraepidermal nerve fibers post-burn relative to the untreated burn (P = 0.0008). TAC/BTX-A downregulated the expressions of nerve growth factor and protein transient receptor potential vanilloid subtype 1. CONCLUSIONS TAC/BTX-A therapy exhibited enhanced and sustained clinical efficacy in relieving scar itch, possibly via modulating epidermal innervation and expression of transient receptor potential vanilloid subtype 1 . LEVEL OF EVIDENCE: 2
Collapse
Affiliation(s)
- Shu-Hung Huang
- Division of Plastic Surgery, Department of Surgery, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Kuo-Wei Wu
- Department of Surgery, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Jing-Jou Lo
- Department of General Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Sheng-Hua Wu
- Department of Anesthesiology, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| |
Collapse
|
47
|
Yamamoto Y, Otsuka A, Ishida Y, Wong LS, Seidel JA, Nonomura Y, Nakashima C, Nakajima S, Kitoh A, Nomura T, Dainichi T, Honda T, Amano W, Konishi N, Hayashi M, Matsushita M, Kabashima K. Pituitary adenylate cyclase-activating polypeptide promotes cutaneous dendritic cell functions in contact hypersensitivity. J Allergy Clin Immunol 2021; 148:858-866. [PMID: 33609627 DOI: 10.1016/j.jaci.2021.02.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Revised: 01/17/2021] [Accepted: 02/05/2021] [Indexed: 10/22/2022]
Abstract
BACKGROUND Sensory nerves regulate cutaneous local inflammation indirectly through induction of pruritus and directly by acting on local immune cells. The underlying mechanisms for how sensory nerves influence cutaneous acquired immune responses remain to be clarified. OBJECTIVE This study aimed to explore the effect of peripheral nerves on cutaneous immune cells in cutaneous acquired immune responses. METHODS We analyzed contact hypersensitivity (CHS) responses as a murine model of delayed-type hypersensitivity in absence or presence of resiniferatoxin-induced sensory nerve denervation. We conducted ear thickness measurements, flow cytometric analyses, and mRNA expression analyses in CHS. RESULTS CHS responses were attenuated in mice that were denervated during the sensitization phase of CHS. By screening neuropeptides, we found that pituitary adenylate cyclase-activating polypeptide (PACAP) mRNA expression was decreased in the dorsal root ganglia after denervation. Administration of PACAP restored attenuated CHS response in resiniferatoxin-treated mice, and pharmacological inhibition of PACAP suppressed CHS. Flow cytometric analysis of skin-draining lymph nodes showed that cutaneous dendritic cell migration and maturation were reduced in both denervated mice and PACAP antagonist-treated mice. The expression of chemokine receptors CCR7 and CXCR4 of dendritic cell s was enhanced by addition of PACAP in vitro. CONCLUSION These findings indicate that a neuropeptide PACAP promotes the development of CHS responses by inducing cutaneous dendritic cell functions during the sensitization phase.
Collapse
Affiliation(s)
- Yasuo Yamamoto
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan; Central Pharmaceutical Research Institute, Japan Tobacco, Takatsuki, Japan
| | - Atsushi Otsuka
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan; Translational Research Department for Skin and Brain Diseases, Kyoto University Graduate School of Medicine, Kyoto, Japan.
| | - Yoshihiro Ishida
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Lai San Wong
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan; Department of Dermatology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Judith A Seidel
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Yumi Nonomura
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Chisa Nakashima
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Saeko Nakajima
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Akihiko Kitoh
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Takashi Nomura
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Teruki Dainichi
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Tetsuya Honda
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Wataru Amano
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan; Central Pharmaceutical Research Institute, Japan Tobacco, Takatsuki, Japan
| | - Noriko Konishi
- Central Pharmaceutical Research Institute, Japan Tobacco, Takatsuki, Japan
| | - Mikio Hayashi
- Central Pharmaceutical Research Institute, Japan Tobacco, Takatsuki, Japan
| | | | - Kenji Kabashima
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan; Singapore Immunology Network and Skin Research Institute of Singapore, Technology and Research, Biopolis, Singapore.
| |
Collapse
|
48
|
Common and discrete mechanisms underlying chronic pain and itch: peripheral and central sensitization. Pflugers Arch 2021; 473:1603-1615. [PMID: 34245379 DOI: 10.1007/s00424-021-02599-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 05/26/2021] [Accepted: 06/22/2021] [Indexed: 12/30/2022]
Abstract
Normally, an obvious antagonism exists between pain and itch. In normal conditions, painful stimuli suppress itch sensation, whereas pain killers often generate itch. Although pain and itch are mediated by separate pathways under normal conditions, most chemicals are not highly specific to one sensation in chronic pathologic conditions. Notably, in patients with neuropathic pain, histamine primarily induces pain rather than itch, while in patients with atopic dermatitis, bradykinin triggers itch rather than pain. Accordingly, repetitive scratching even enhances itch sensation in chronic itch conditions. Physicians often prescribe pain relievers to patients with chronic itch, suggesting common mechanisms underlying chronic pain and itch, especially peripheral and central sensitization. Rather than separating itch and pain, studies should investigate chronic itch and pain including neuropathic and inflammatory conditions. Here, we reviewed chronic sensitization leading to chronic pain and itch at both peripheral and central levels. Studies investigating the connection between pain and itch facilitate the development of new therapeutics against both chronic dysesthesias based on the underlying pathophysiology.
Collapse
|
49
|
Teo L, Boghdadi AG, Homman-Ludiye J, Mundinano IC, Kwan WC, Bourne JA. Replicating infant-specific reactive astrocyte functions in the injured adult brain. Prog Neurobiol 2021; 204:102108. [PMID: 34147584 DOI: 10.1016/j.pneurobio.2021.102108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 06/10/2021] [Accepted: 06/15/2021] [Indexed: 11/29/2022]
Abstract
Infants and adults respond differently to brain injuries. Specifically, improved neuronal sparing along with reduced astrogliosis and glial scarring often observed earlier in life, likely contributes to improved long-term outcomes. Understanding the underlying mechanisms could enable the recapitulation of neuroprotective effects, observed in infants, to benefit adults after brain injuries. We reveal that in primates, Eph/ ephrin signaling contributes to age-dependent reactive astrocyte behavior. Ephrin-A5 expression on astrocytes was more protracted in adults, whereas ephrin-A1 was only expressed on infant astrocytes. Furthermore, ephrin-A5 exacerbated major hallmarks of astrocyte reactivity via EphA2 and EphA4 receptors, which was subsequently alleviated by ephrin-A1. Rather than suppressing reactivity, ephrin-A1 signaling shifted astrocytes towards GAP43+ neuroprotection, accounting for improved neuronal sparing in infants. Reintroducing ephrin-A1 after middle-aged focal ischemic injury significantly attenuated glial scarring, improved neuronal sparing and preserved circuitry. Therefore, beneficial infant mechanisms can be recapitulated in adults to improve outcomes after CNS injuries.
Collapse
Affiliation(s)
- Leon Teo
- Australian Regenerative Medicine Institute, 15 Innovation Walk, Monash University, Clayton VIC, 3800, Australia
| | - Anthony G Boghdadi
- Australian Regenerative Medicine Institute, 15 Innovation Walk, Monash University, Clayton VIC, 3800, Australia
| | - Jihane Homman-Ludiye
- Australian Regenerative Medicine Institute, 15 Innovation Walk, Monash University, Clayton VIC, 3800, Australia
| | - Inaki-Carril Mundinano
- Australian Regenerative Medicine Institute, 15 Innovation Walk, Monash University, Clayton VIC, 3800, Australia
| | - William C Kwan
- Australian Regenerative Medicine Institute, 15 Innovation Walk, Monash University, Clayton VIC, 3800, Australia
| | - James A Bourne
- Australian Regenerative Medicine Institute, 15 Innovation Walk, Monash University, Clayton VIC, 3800, Australia.
| |
Collapse
|
50
|
Shi P, Li Z, He T, Li N, Xu X, Yu P, Lu X, Nie J, Liu D, Cai Q, Guan Y, Ge F, Wang J, Guan X. Astrocyte-selective STAT3 knockdown rescues methamphetamine withdrawal-disrupted spatial memory in mice via restoring the astrocytic capacity of glutamate clearance in dCA1. Glia 2021; 69:2404-2418. [PMID: 34110044 DOI: 10.1002/glia.24046] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 05/29/2021] [Accepted: 06/01/2021] [Indexed: 01/07/2023]
Abstract
Methamphetamine (METH) is a common abused drug. METH-triggered glutamate (Glu) levels in dorsal CA1 (dCA1) could partially explain the etiology of METH-caused abnormal memory, but the synaptic mechanism remains unclear. Here, we found that METH withdrawal disrupted spatial memory in mice, accompanied by the increases in Glu levels and postsynaptic neuronal activities at dCA1 synapses. METH withdrawal weakened the capacity of Glu clearance in astrocytes, as indicated by increasing the A1-like astrocytes and phosphorylated signal transducer and activator of transcription 3 (p-STAT3), decreasing the Glu transporter 1(GLT-1, also known as EAAT2 or SLC1A2), Glu-aspartate-transporter (GLAST also known as EAAT1 or SLC1A3) and astrocytic glutamine synthase (GS), but failed to affect the presynaptic Glu release from dCA3 within dCA1. Moreover, we identified that in vitro A1-like astrocytes exhibited an increased STAT3 activation and the impaired capacity of Glu clearance. Most importantly, selective knockdown of astrocytic STAT3 in vivo in dCA1 restored the astrocytic capacity of Glu clearance, normalized Glu levels at dCA1 synapses, and finally rescued METH withdrawal-disrupted spatial memory in mice. Thus, astrocytic Glu clearance system, especially STAT3, serves as a novel target for future therapies against METH neurotoxicity.
Collapse
Affiliation(s)
- Pengbo Shi
- Department of Human Anatomy and Histoembryology, Nanjing University of Chinese Medicine, Nanjing, China.,Department of Orthopedics, The First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou, Henan, China
| | - Zhaosu Li
- Department of Human Anatomy and Histoembryology, Nanjing University of Chinese Medicine, Nanjing, China
| | - Teng He
- Department of Human Anatomy and Histoembryology, Nanjing University of Chinese Medicine, Nanjing, China
| | - Nanqin Li
- Department of Human Anatomy and Histoembryology, Nanjing University of Chinese Medicine, Nanjing, China
| | - Xing Xu
- Department of Human Anatomy and Histoembryology, Nanjing University of Chinese Medicine, Nanjing, China
| | - Peiyao Yu
- Department of Human Anatomy and Histoembryology, Nanjing University of Chinese Medicine, Nanjing, China
| | - Xue Lu
- Department of Human Anatomy and Histoembryology, Nanjing University of Chinese Medicine, Nanjing, China
| | - Jiaxun Nie
- Department of Human Anatomy and Histoembryology, Nanjing University of Chinese Medicine, Nanjing, China
| | - Dekang Liu
- Department of Human Anatomy and Histoembryology, Nanjing University of Chinese Medicine, Nanjing, China
| | - Qinglong Cai
- Department of Human Anatomy and Histoembryology, Nanjing University of Chinese Medicine, Nanjing, China
| | - Yun Guan
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Feifei Ge
- Department of Human Anatomy and Histoembryology, Nanjing University of Chinese Medicine, Nanjing, China
| | - Jun Wang
- Department of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Xiaowei Guan
- Department of Human Anatomy and Histoembryology, Nanjing University of Chinese Medicine, Nanjing, China
| |
Collapse
|