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Sanabria-Castro A, Alape-Girón A, Flores-Díaz M, Echeverri-McCandless A, Parajeles-Vindas A. Oxidative stress involvement in the molecular pathogenesis and progression of multiple sclerosis: a literature review. Rev Neurosci 2024; 35:355-371. [PMID: 38163257 DOI: 10.1515/revneuro-2023-0091] [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: 08/16/2023] [Accepted: 11/26/2023] [Indexed: 01/03/2024]
Abstract
Multiple sclerosis (MS) is an autoimmune debilitating disease of the central nervous system caused by a mosaic of interactions between genetic predisposition and environmental factors. The pathological hallmarks of MS are chronic inflammation, demyelination, and neurodegeneration. Oxidative stress, a state of imbalance between the production of reactive species and antioxidant defense mechanisms, is considered one of the key contributors in the pathophysiology of MS. This review is a comprehensive overview of the cellular and molecular mechanisms by which oxidant species contribute to the initiation and progression of MS including mitochondrial dysfunction, disruption of various signaling pathways, and autoimmune response activation. The detrimental effects of oxidative stress on neurons, oligodendrocytes, and astrocytes, as well as the role of oxidants in promoting and perpetuating inflammation, demyelination, and axonal damage, are discussed. Finally, this review also points out the therapeutic potential of various synthetic antioxidants that must be evaluated in clinical trials in patients with MS.
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Affiliation(s)
- Alfredo Sanabria-Castro
- Unidad de Investigación, Hospital San Juan de Dios, Caja Costarricense de Seguro Social, San José, 10103, Costa Rica
- Departamento de Farmacología, Toxicología y Farmacodependencia, Facultad de Farmacia, Universidad de Costa Rica, San Pedro de Montes de Oca, 11501, Costa Rica
| | - Alberto Alape-Girón
- Instituto Clodomiro Picado, Facultad de Microbiología, Universidad de Costa Rica, Dulce Nombre Vázquez de Coronado, 11103, Costa Rica
| | - Marietta Flores-Díaz
- Instituto Clodomiro Picado, Facultad de Microbiología, Universidad de Costa Rica, Dulce Nombre Vázquez de Coronado, 11103, Costa Rica
| | - Ann Echeverri-McCandless
- Unidad de Investigación, Hospital San Juan de Dios, Caja Costarricense de Seguro Social, San José, 10103, Costa Rica
| | - Alexander Parajeles-Vindas
- Servicio de Neurología, Hospital San Juan de Dios, Caja Costarricense de Seguro Social, San José, 10103, Costa Rica
- Servicio de Neurología, Hospital Clínica Bíblica, San José, 10104, Costa Rica
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Hu Y, Dai S, Zhao L, Zhao L. Research progress on the improvement of cardiovascular diseases through the autonomic nervous system regulation of the NLRP3 inflammasome pathway. Front Cardiovasc Med 2024; 11:1369343. [PMID: 38650918 PMCID: PMC11034522 DOI: 10.3389/fcvm.2024.1369343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Accepted: 03/28/2024] [Indexed: 04/25/2024] Open
Abstract
Cardiovascular disease stands as a leading global cause of mortality. Nucleotide-binding Oligomerization Domain-like Receptor Protein 3 (NLRP3) inflammasome is widely acknowledged as pivotal factor in specific cardiovascular disease progression, such as myocardial infarction, heart failure. Recent investigations underscore a close interconnection between autonomic nervous system (ANS) dysfunction and cardiac inflammation. It has been substantiated that sympathetic nervous system activation and vagus nerve stimulation (VNS) assumes critical roles withinNLRP3 inflammasome pathway regulation, thereby contributing to the amelioration of cardiac injury and enhancement of prognosis in heart diseases. This article reviews the nexus between NLRP3 inflammasome and cardiovascular disorders, elucidating the modulatory functions of the sympathetic and vagus nerves within the ANS with regard to NLRP3 inflammasome. Furthermore, it delves into the potential therapeutic utility of NLRP3 inflammasome to be targeted by VNS. This review serves as a valuable reference for further exploration into the potential mechanisms underlying VNS in the modulation of NLRP3 inflammasome.
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Affiliation(s)
| | | | - Lulu Zhao
- Department of Cardiology, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Ling Zhao
- Department of Cardiology, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
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Ramos-González EJ, Bitzer-Quintero OK, Ortiz G, Hernández-Cruz JJ, Ramírez-Jirano LJ. Relationship between inflammation and oxidative stress and its effect on multiple sclerosis. Neurologia 2024; 39:292-301. [PMID: 38553104 DOI: 10.1016/j.nrleng.2021.10.010] [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: 08/19/2021] [Accepted: 10/28/2021] [Indexed: 04/02/2024] Open
Abstract
INTRODUCTION This paper highlights the relationship of inflammation and oxidative stress as damage mechanisms of Multiple Sclerosis (MS), considered an inflammatory and autoimmune disease. DEVELOPMENT The oxidative stress concept has been defined by an imbalance between oxidants and antioxidants in favor of the oxidants. There is necessary to do physiological functions, like the respiration chain, but in certain conditions, the production of reactive species overpassed the antioxidant systems, which could cause tissue damage. On the other hand, it is well established that inflammation is a complex reaction in the vascularized connective tissue in response to diverse stimuli. However, an unregulated prolonged inflammatory process also can induce tissue damage. CONCLUSION Both inflammation and oxidative stress are interrelated since one could promote the other, leading to a toxic feedback system, which contributes to the inflammatory and demyelination process in MS.
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Affiliation(s)
- E J Ramos-González
- Unidad de Investigacion Biomedica de Zacatecas, Instituto Mexicano del Seguro Social, Zacatecas, Zacatecas, Mexico
| | - O K Bitzer-Quintero
- División de Neurociencias, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco, Mexico
| | - G Ortiz
- Departamento de Diciplinas Metodológicas y Filosóficas, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Mexico
| | - J J Hernández-Cruz
- Departamento de Diciplinas Metodológicas y Filosóficas, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Mexico
| | - L J Ramírez-Jirano
- División de Neurociencias, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco, Mexico.
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Bai Y, Bai J, Lu P, Jing YM, Zheng WC, Wang LY, Wang JH, Wang F. Hirudin ameliorates myocardial ischemia-reperfusion injury in a rat model of hemorrhagic shock and resuscitation: roles of NLRP3-signaling pathway. Mol Cell Biochem 2024; 479:63-72. [PMID: 36988778 DOI: 10.1007/s11010-023-04717-z] [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: 02/16/2023] [Accepted: 03/17/2023] [Indexed: 03/30/2023]
Abstract
Severe hemorrhage shock and resuscitation (HSR) has been reported to induce myocardial ischemia-reperfusion injury (MIRI), resulting in a poor prognosis. Hirudin, an effective thrombin inhibitor, can offer protection against MIRI. This study aimed to determine if hirudin administration ameliorates HSR-induced MIRI and the underlying mechanism. A rat model of HSR was established by bleeding rats to a mean arterial blood pressure of 30-35 mmHg for 45 min and then resuscitating them with all the shed blood through the left femoral vein. After HSR, 1 mg/kg of hirudin was administrated immediately. At 24 h after HSR, the cardiac injury was assessed using serum CK-MB, cTnT, hematoxylin-eosin (HE) staining, echocardiography, M1-polarized macrophages, and pyroptosis-associated factors, including cleaved caspase-1, Gasdermin D (GSDMD) N-terminal, IL-1β, and IL-18 were measured by immunofluorescence and western blot assays. Nigericin, a unique agonist, was utilized to evaluate the responsibilities of NLRP3 signaling. Under the HSR condition, rats exhibited a significant increase in myocardial injury score, an elevation of serum cTnT, CK-MB levels, an aggrandization of M1-polarized macrophages, an upregulation of pyroptosis-associated factors, including cleaved caspase-1, GSDMD N-terminal, IL-1β, and IL-18, but a significant decrease in left ventricular ejection fraction (EF%) and a reduction of left ventricular fractional shortening (FS%), while hirudin administration partially restored the changes. However, the NLRP3 agonist nigericin reversed the cardioprotective effects of hirudin. We determined the cardioprotective effects of hirudin against HSR-induced MIRI. The mechanism may involve the inhibition of NLRP3-induced pyroptosis.
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Affiliation(s)
- Yang Bai
- Department of Anesthesiology, Hebei Province Cangzhou Hospital of Integrated Traditional and Western Medicine, Cangzhou, China
| | - Jing Bai
- Department of Anesthesiology, Cangzhou Central Hospital, Cangzhou, China
| | - Peng Lu
- Department of Cardiovascular Disease, Hebei Province Cangzhou Hospital of Integrated Traditional and Western Medicine, Hebei University of Chinese Medicine, Cangzhou, China
| | - Yu-Mo Jing
- Department of Anesthesiology, Hebei Province Cangzhou Hospital of Integrated Traditional and Western Medicine, Cangzhou, China
| | - Wei-Chao Zheng
- Department of Anesthesiology, Hebei Province Cangzhou Hospital of Integrated Traditional and Western Medicine, Cangzhou, China
| | - Lu-Ying Wang
- Department of Anesthesia and Trauma Research, Department of Anesthesiology, Hebei Province Cangzhou Hospital of Integrated Traditional and Western Medicine, Cangzhou, China
| | - Jian-Hua Wang
- Department of Anesthesiology, Hebei Province Cangzhou Hospital of Integrated Traditional and Western Medicine, Cangzhou, China
| | - Feng Wang
- Department of Cardiovascular Disease, Hebei Province Cangzhou Hospital of Integrated Traditional and Western Medicine, Cangzhou, China.
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Sheng Y, Liu J, Zhang M, Zheng S. Unveiling the link between inflammasomes and skin cutaneous melanoma: Insights into expression patterns and immunotherapy response prediction. MATHEMATICAL BIOSCIENCES AND ENGINEERING : MBE 2023; 20:19912-19928. [PMID: 38052629 DOI: 10.3934/mbe.2023881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
Skin cutaneous melanoma (SKCM) is one of the most malignant forms of skin cancer, characterized by its high metastatic potential and low cure rate in advanced stages. Despite advancements in clinical therapies, the overall cure rate for SKCM remains low due to its resistance to conventional treatments. Inflammation is associated with the activation and regulation of inflammatory responses and plays a crucial role in the immune system. It has been implicated in various physiological and pathological processes, including cancer. However, the mechanisms of inflammasome activation in SKCM remain largely unexplored. In this study, we quantified the expression level of six inflammasome-related gene sets using transcriptomic data from SKCM patients. As a result, we found that inflammasome features were closely associated with various clinical characteristics and served as a favorable prognostic factor for patients. A functional enrichment analysis revealed the oncogenic role of inflammasome features in SKCM. Unsupervised clustering was applied to identify immune clusters and inflammatory subtypes, revealing a significant overlap between immune cluster 4 and SKCM subtype 2. The CASP1, GSDMD, NLRP3, IL1B, and IL18 features could predict immune checkpoint blockade therapy response in various SKCM cohorts. In conclusion, our study highlighted the significant association between the inflammasome and cancer treatment. Understanding the role of inflammasome signaling in SKCM pathology can help identify potential therapeutic targets and improve patient prognosis.
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Affiliation(s)
- Yu Sheng
- Department of Dermatology, The First Affiliated Hospital of Harbin Medical University, Heilongjiang 150001, China
| | - Jing Liu
- Department of Dermatology, The First Affiliated Hospital of Harbin Medical University, Heilongjiang 150001, China
| | - Miao Zhang
- Department of Dermatology, Heilongjiang Provincial Hospital, Heilongjiang 150036, China
| | - Shuyun Zheng
- Department of Dermatology, The First Affiliated Hospital of Harbin Medical University, Heilongjiang 150001, China
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Yu Y, Fan Z, Han Y, Sun X, Dong C, Liu G, Yin X, Liu L, Bai Y, Yang B. miR-135 protects against atrial fibrillation by suppressing intracellular calcium-mediated NLRP3 inflammasome activation. J Cell Commun Signal 2023; 17:813-825. [PMID: 36692633 PMCID: PMC10409699 DOI: 10.1007/s12079-023-00721-6] [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: 09/19/2022] [Accepted: 01/04/2023] [Indexed: 01/25/2023] Open
Abstract
Atrial fibrillation (AF), one of the most common types of arrhythmias, is associated with high morbidity and mortality, seriously endangering human health. Inflammation is closely associated with AF development. Activation of the nucleotide-binding domain-like receptor protein 3 (NLRP3) inflammasome in cardiomyocytes has been shown to promote AF progression. Here, we demonstrate the effect of miR-135 on NLRP3 inflammasome and study the cardioprotective role of miR-135 in AF. We observed that overexpression of miR-135 in mice reduced the AF incidence and duration, and inhibited both excessive activation of NLRP3 inflammasome and the increased intracellular calcium release during AF. However, the inhibitory effect of miR-135 on AF was partly abolished in the presence of a specific agonist of the calcium-sensing receptor (CaSR). We showed in the present study that miR-135 has a protective effect against AF by suppressing intracellular calcium-mediated NLRP3 inflammasome activation, suggesting the potential of miR-135 as a therapeutic agent in the treatment of AF.
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Affiliation(s)
- Yahan Yu
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, People's Republic of China
- Zhuhai People's Hospital, Guangdong Provincial Key Laboratory of Tumor Interventional Diagnosis and Treatment, Zhuhai Hospital Affiliated with Jinan University, Jinan University, Zhuhai, 519000, People's Republic of China
| | - Zheyu Fan
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, People's Republic of China
| | - Yanna Han
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, People's Republic of China
| | - Xi Sun
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, People's Republic of China
| | - Chaorun Dong
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, People's Republic of China
| | - Guanqun Liu
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, People's Republic of China
| | - Xinda Yin
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, People's Republic of China
| | - Linhe Liu
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, People's Republic of China
| | - Yunlong Bai
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, People's Republic of China.
- Joint International Research Laboratory of Cardiovascular Medicine, Ministry of Education, College of Pharmacy, Harbin Medical University, Harbin, 150081, People's Republic of China.
- Translational Medicine Research and Cooperation Center of Northern China, Heilongjiang Academy of Medical Sciences, Harbin, 150086, People's Republic of China.
| | - Baofeng Yang
- Department of Pharmacology (State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, 150081, People's Republic of China.
- Joint International Research Laboratory of Cardiovascular Medicine, Ministry of Education, College of Pharmacy, Harbin Medical University, Harbin, 150081, People's Republic of China.
- Translational Medicine Research and Cooperation Center of Northern China, Heilongjiang Academy of Medical Sciences, Harbin, 150086, People's Republic of China.
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Batta SM, Far NNE, Soliman NA, Nassar SO. A Study of NLRC4 in Patients with Leprosy. Indian J Dermatol 2023; 68:385-392. [PMID: 37822385 PMCID: PMC10564182 DOI: 10.4103/ijd.ijd_781_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/13/2023] Open
Abstract
Background Activation of the NLRC4 inflammasome appears to start many signalling processes inside the host, including caspase-1, the principal protease responsible for converting proIL-1β and IL-18 to active, secreted IL-1β and IL-18, resulting in pyroptosis. Aims To evaluate NLRC4 level in patient's blood serum to highlight its role in the pathogenesis of leprosy. Materials and Methods This prospective study was conducted on 40 patients with leprosy and 30 healthy individuals of matched ages and sexes. All patients were subjected to complete history taking, general and dermatological examination, laboratory investigations, slit skin smear with bacillary index, and clinical classification of the studied leprosy group patients regarding disability according to disability grading. And finally, measurement of serum NLRC4 level by ELISA. Results In the paucibacillary (PB) group, NLRC4 serum level ranged from 0.9 to 1.8 ng/ml with 1.43 ± 0.28 ng/ml, while in the multibacillary (MB) group, it ranged from 1.2 to 5.7 ng/ml with 2.83 ± 1.11 ng/ml. NLRC4 serum level had increased significantly in MB patients compared to PB patients (P < 0.05). There was a significant difference among the three studied groups, regarding the serum level of NLRC4 (P < 0.05). In leprosy patients, significant positive correlations were found between serum levels of NLRC4 and bacillary index and duration of leprosy. Conclusions Leprosy patients had considerably greater serum levels of NLRC4 than controls. It was much greater in MB patients than in PB patients.
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Affiliation(s)
- Salma Mosaad Batta
- From the Dermatology and Venereology Department, Faculty of Medicine, Tanta University, Tanta, Egypt
| | - Nashwa Naeem El Far
- From the Dermatology and Venereology Department, Faculty of Medicine, Tanta University, Tanta, Egypt
| | - Nema Ali Soliman
- From the Dermatology and Venereology Department, Faculty of Medicine, Tanta University, Tanta, Egypt
| | - Samia Othman Nassar
- From the Dermatology and Venereology Department, Faculty of Medicine, Tanta University, Tanta, Egypt
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Mandell JT, de Rivero Vaccari JP, Sabater AL, Galor A. The inflammasome pathway: A key player in ocular surface and anterior segment diseases. Surv Ophthalmol 2023; 68:280-289. [PMID: 35798189 DOI: 10.1016/j.survophthal.2022.06.003] [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: 12/14/2021] [Revised: 06/29/2022] [Accepted: 06/30/2022] [Indexed: 01/06/2023]
Abstract
Inflammasomes are multicomplex molecular regulators with an emerging importance in regulating ocular surface and anterior segment health and disease. Key components found in the eye include NF-κB, NLRP3, NLRC4, NLRP6, ASC, IL-1β, IL-18, and caspase-1. The role of NLRP1, NLRC4, AIM2, and NLRP3 inflammasomes in the pathogenesis of infectious ulcers, DED, uveitis, glaucoma, corneal edema, and other diseases is being studied with many developments. Attenuation of these diseases has been explored by blocking various molecules along the inflammasome pathway with agents like NAC, polydatin, calcitriol, glyburide, YVAD, and disulfiram. We provide a background on the inflammasome pathway as it relates to the ocular surface and anterior segment of the eye, discuss the role of inflammasomes in the above diseases in animals and humans, investigate new therapeutic targets, and explore the efficacy of new anti-inflammasome therapies.
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Affiliation(s)
| | - Juan Pablo de Rivero Vaccari
- Department of Neurological Surgery, The Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, FL, USA
| | | | - Anat Galor
- Bascom Palmer Eye Institute, University of Miami, Miami, FL, USA; Ophthalmology, Miami Veterans Affairs (VA) Medical Center, Miami, FL, USA.
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Wan L, He X, He M, Yu Y, Jiang W, Liang C, Luo K, Gong X, Yang Y, Dong Q, Chen P. Docosahexaenoic acid improves cognition and hippocampal pyroptosis in rats with intrauterine growth restriction. Heliyon 2023; 9:e12920. [PMID: 36747549 PMCID: PMC9898307 DOI: 10.1016/j.heliyon.2023.e12920] [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: 09/15/2022] [Revised: 01/04/2023] [Accepted: 01/09/2023] [Indexed: 01/28/2023] Open
Abstract
Background and Objective Intrauterine growth restriction (IUGR) is defined as the failure of a fetus to reach its genetic growth potential in utero resulted by maternal, placental, fetal, and genetic factors. Previous studies have reported that IUGR is associated with a high incidence of neurological damage, although the precise causes of such damage remain unclear. We aimed to investigate whether cognitive impairment in rats with IUGR is related to pyroptosis of hippocampal neurons and determine the effect of early intervention with docosahexaenoic acid (DHA). Methods Learning and memory function was assessed using the Morris water maze test. The morphological structure and ultrastructure of the hippocampus was examined via hematoxylin and eosin staining and electron microscopy respectively. The pyroptosis of hippocampal neuron was detected by gasdermin-D (GSDMD) immunofluorescence staining, mRNA and protein expression of nuclear localization leucine-rich-repeat protein 1 (NLRP1), caspase-1, GSDMD, and quantification of inflammatory cytokines interleukin (IL)-1β and IL-18 in the hippocampus. Results IUGR rats exhibited decreased learning and memory function, morphological structure and ultrastructural changes in hippocampus compared to controls. IUGR rats also exhibited increased hippocampal quantification of GSDMD immunofluorescence staining, increased mRNA and protein expression of NLRP1, caspase-1, and GSDMD, and increased quantification of IL-1β and IL-18 in the hippocampus. Intervention with DHA attenuated these effects. Conclusion Cognitive impairment in rats with IUGR may be related to pyroptosis of hippocampal neurons. Early intervention with DHA may attenuate cognitive impairment and reduce hippocampal pyroptosis in rats with IUGR.
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Affiliation(s)
- Lijia Wan
- Department of Pediatrics, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, PR China,Department of Child Healthcare, Hunan Provincial Maternal and Child Health Care Hospital, Changsha, Hunan 410011, PR China
| | - Xiaori He
- Department of Pediatrics, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, PR China,Laboratory of Neonatal Disease, Institute of Pediatrics, Central South University, Changsha, Hunan 410011, PR China
| | - Mingfeng He
- Department of Pediatrics, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, PR China,Laboratory of Neonatal Disease, Institute of Pediatrics, Central South University, Changsha, Hunan 410011, PR China
| | - Yuanqiang Yu
- Department of Pediatrics, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, PR China,Laboratory of Neonatal Disease, Institute of Pediatrics, Central South University, Changsha, Hunan 410011, PR China
| | - Weiming Jiang
- Children's Institute of Three Gorges University, Yichang Central People's Hospital, The First College of Clinical Medical Sciences, China Three Gorges University, Yichang 443003, PR China
| | - Can Liang
- Department of Pediatrics, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, PR China,Laboratory of Neonatal Disease, Institute of Pediatrics, Central South University, Changsha, Hunan 410011, PR China
| | - Kaiju Luo
- Department of Pediatrics, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, PR China,Laboratory of Neonatal Disease, Institute of Pediatrics, Central South University, Changsha, Hunan 410011, PR China
| | - Xiaoyun Gong
- Department of Pediatrics, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, PR China,Laboratory of Neonatal Disease, Institute of Pediatrics, Central South University, Changsha, Hunan 410011, PR China
| | - Yonghui Yang
- Department of Pediatrics, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, PR China,Laboratory of Neonatal Disease, Institute of Pediatrics, Central South University, Changsha, Hunan 410011, PR China
| | - Qingyi Dong
- Department of Pediatrics, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, PR China,Laboratory of Neonatal Disease, Institute of Pediatrics, Central South University, Changsha, Hunan 410011, PR China
| | - Pingyang Chen
- Department of Pediatrics, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, PR China,Laboratory of Neonatal Disease, Institute of Pediatrics, Central South University, Changsha, Hunan 410011, PR China,Corresponding author. NO.139, Renmin Middle Road, furong District, Changsha, Hunan 410011, PR China.
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Froes LAR, Sotto MN, Trindade MAB. Leprosy: clinical and immunopathological characteristics. An Bras Dermatol 2022; 97:338-347. [PMID: 35379512 PMCID: PMC9133310 DOI: 10.1016/j.abd.2021.08.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 08/11/2021] [Accepted: 08/16/2021] [Indexed: 11/26/2022] Open
Abstract
Leprosy, a disease caused by Mycobacterium leprae, has polymorphic neurocutaneous manifestations strongly correlated with the host immune response. Peripheral neural damage can lead to sensory and motor losses, as well as deformities of the hands and feet. Both innate and acquired immune responses are involved, but the disease has been classically described along a Th1/Th2 spectrum, where the Th1 pole corresponds to the more limited presentations and the Th2 to the multibacillary ones. The aim of this review is to discuss this dichotomy in light of the current knowledge of the cytokines, T helper subpopulations, and regulatory T cells involved in each presentation of leprosy. The text will also address leprosy reactions related to increased inflammatory activity in both limited and multibacillary presentations, leading to exacerbation of chronic signs and symptoms and/or the development of new ones. Despite the efforts of many research groups around the world, there is no standardized serological test/biological marker for diagnosis so far, even in endemic areas, which could contribute to the eradication of leprosy.
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Wang JY, Xing Y, Li MY, Zhang ZH, Jin HL, Ma J, Lee JJ, Zhong Y, Zuo HX, Jin X. Panaxadiol inhibits IL-1β secretion by suppressing zinc finger protein 91-regulated activation of non-canonical caspase-8 inflammasome and MAPKs in macrophages. JOURNAL OF ETHNOPHARMACOLOGY 2022; 283:114715. [PMID: 34648898 DOI: 10.1016/j.jep.2021.114715] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 09/28/2021] [Accepted: 10/05/2021] [Indexed: 06/13/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The use of Panax ginseng C.A.Mey. in traditional Chinese medicine dates back to about 5000 years ago thanks to its several beneficial and healing properties. Panaxadiol is a triterpenoid sapogenin monomer found in the roots of Panax ginseng C.A.Mey. and has been proven to have various bio-activities such as anti-inflammatory, anti-tumour and neuroprotective effects. AIM OF THE STUDY The present study focuses on investigating the inflammation inhibitory effect and mechanism of panaxadiol by regulating zinc finger protein 91-regulated activation of non-canonical caspase-8 inflammasome and MAPKs in macrophages. MATERIALS AND METHODS In vitro, the underlying mechanisms by which panaxadiol inhibits ZFP91-regulated IL-1β expression were investigated using molecular docking, western blotting, RT-PCR, ELISA, immunofluorescence, and immunoprecipitation assays. In vivo, colitis was induced by oral administration of DSS in drinking water, and peritonitis was induced by an intraperitoneal injection of alum. Recombinant adeno-associated virus (AAV serotype 9) vector was used to establish ZFP91 knockdown mouse. RESULTS We confirmed that panaxadiol inhibited IL-1β secretion by suppressing ZFP91 in macrophages. Further analysis revealed that panaxadiol inhibited IL-1β secretion by suppressing ZFP91-regulated activation of non-canonical caspase-8 inflammasome. Meanwhile, panaxadiol inhibited IL-1β secretion by suppressing ZFP91-regulated activation of MAPKs. In vivo, prominent anti-inflammatory effects of panaxadiol were demonstrated in a DSS induced acute colitis mouse model and in an alum-induced peritonitis model by suppressing ZFP91-regulated secretion of inflammatory mediators, consistent with the results of the AAV-ZFP91 knockdown in mice. CONCLUSIONS We report for the first time that panaxadiol inhibited IL-1β secretion by suppressing ZFP91-regulated activation of non-canonical caspase-8 inflammasome and MAPKs, providing evidence for anti-inflammation mechanism of panaxadiol treatment for inflammatory diseases.
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Affiliation(s)
- Jing Ying Wang
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji, 133002, Jilin Province, China.
| | - Yue Xing
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji, 133002, Jilin Province, China.
| | - Ming Yue Li
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji, 133002, Jilin Province, China.
| | - Zhi Hong Zhang
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji, 133002, Jilin Province, China.
| | - Hong Lan Jin
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji, 133002, Jilin Province, China.
| | - Juan Ma
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji, 133002, Jilin Province, China.
| | - Jung Joon Lee
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji, 133002, Jilin Province, China.
| | - Yi Zhong
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji, 133002, Jilin Province, China.
| | - Hong Xiang Zuo
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji, 133002, Jilin Province, China.
| | - Xuejun Jin
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Molecular Medicine Research Center, College of Pharmacy, Yanbian University, Yanji, 133002, Jilin Province, China.
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12
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Yang L, Zhang X, Wang Q. Effects and mechanisms of SGLT2 inhibitors on the NLRP3 inflammasome, with a focus on atherosclerosis. Front Endocrinol (Lausanne) 2022; 13:992937. [PMID: 36589841 PMCID: PMC9797675 DOI: 10.3389/fendo.2022.992937] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 11/30/2022] [Indexed: 12/23/2022] Open
Abstract
Atherosclerosis is a lipid-driven chronic inflammatory disease that is widespread in the walls of large and medium-sized arteries. Its pathogenesis is not fully understood. The currently known pathogenesis includes activation of pro-inflammatory signaling pathways in the body, increased oxidative stress, and increased expression of cytokines/chemokines. In the innate immune response, inflammatory vesicles are an important component with the ability to promote the expression and maturation of inflammatory factors, release large amounts of inflammatory cytokines, trigger a cascade of inflammatory responses, and clear pathogens and damaged cells. Studies in the last few years have demonstrated that NLRP3 inflammatory vesicles play a crucial role in the development of atherosclerosis as well as its complications. Several studies have shown that NLRP3 binding to ligands promotes inflammasome formation, activates caspase-1, and ultimately promotes its maturation and the maturation and production of IL-1β and IL-18. IL-1β and IL-18 are considered to be the two most prominent inflammatory cytokines in the inflammasome that promote the development of atherosclerosis. SGLT2 inhibitors are novel hypoglycemic agents that also have significant antiatherosclerotic effects. However, their exact mechanism is not yet clear. This article is a review of the literature on the effects and mechanisms of SGLT2 inhibitors on the NLRP3 inflammasome, focusing on their role in antiatherosclerosis.
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13
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Relationship between inflammation and oxidative stress and its effect on multiple sclerosis. Neurologia 2021. [DOI: 10.1016/j.nrl.2021.10.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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14
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Qiu J, Xiao X, Gao X, Zhang Y. Ulinastatin protects against sepsis‑induced myocardial injury by inhibiting NLRP3 inflammasome activation. Mol Med Rep 2021; 24:730. [PMID: 34414461 PMCID: PMC8404092 DOI: 10.3892/mmr.2021.12369] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Accepted: 07/22/2021] [Indexed: 11/29/2022] Open
Abstract
Myocardial injury is the primary manifestation of multiple organ dysfunction during sepsis, however, the mechanisms underlying sepsis-induced myocardial injury remain unclear. Similarly, no effective therapeutics have yet been developed for myocardial injury. In the present study, the role of the NOD-like receptor 3 (NLRP3) inflammasome on cardiac function were characterized and the effects of different ulinastatin (UTI) doses in protecting a septic rat model from myocardial injury were elucidated. To evaluate UTI efficacy on cardiac function, its effects on anti-inflammatory mediators were analyzed and its cardioprotective effects were investigated. It was demonstrated that circulatory levels of tumor necrosis factor-α and interleukin-1β were elevated during sepsis. It was also observed that NLRP3 and caspase-1 expression enhanced post-cecal ligation and puncture (CLP), and that high UTI levels protected against myocardial injury induced by sepsis. To the best of our knowledge, this is the first study to demonstrate that the mechanisms underpinning UTI-mediated myocardial protection were due to the downregulation of the NLRP3/caspase-1/IL-1β signaling pathway. Based on these findings, it is proposed that UTI exerts beneficial effects during sepsis-induced myocardial injury.
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Affiliation(s)
- Juanjuan Qiu
- Centralab, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China
| | - Xiaoguang Xiao
- Clinical Laboratory, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China
| | - Xue Gao
- Department of Pathology, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China
| | - Yongli Zhang
- Department of Critical Care Medicine, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China
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15
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Hartnell IJ, Blum D, Nicoll JAR, Dorothee G, Boche D. Glial cells and adaptive immunity in frontotemporal dementia with tau pathology. Brain 2021; 144:724-745. [PMID: 33527991 DOI: 10.1093/brain/awaa457] [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: 06/03/2020] [Revised: 10/06/2020] [Accepted: 10/17/2020] [Indexed: 12/12/2022] Open
Abstract
Neuroinflammation is involved in the aetiology of many neurodegenerative disorders including Alzheimer's disease, Parkinson's disease and motor neuron disease. Whether neuroinflammation also plays an important role in the pathophysiology of frontotemporal dementia is less well known. Frontotemporal dementia is a heterogeneous classification that covers many subtypes, with the main pathology known as frontotemporal lobar degeneration. The disease can be categorized with respect to the identity of the protein that causes the frontotemporal lobar degeneration in the brain. The most common subgroup describes diseases caused by frontotemporal lobar degeneration associated with tau aggregation, also known as primary tauopathies. Evidence suggests that neuroinflammation may play a role in primary tauopathies with genome-wide association studies finding enrichment of genetic variants associated with specific inflammation-related gene loci. These loci are related to both the innate immune system, including brain resident microglia, and the adaptive immune system through possible peripheral T-cell involvement. This review discusses the genetic evidence and relates it to findings in animal models expressing pathogenic tau as well as to post-mortem and PET studies in human disease. Across experimental paradigms, there seems to be a consensus regarding the involvement of innate immunity in primary tauopathies, with increased microglia and astrocyte density and/or activation, as well as increases in pro-inflammatory markers. Whilst it is less clear as to whether inflammation precedes tau aggregation or vice versa; there is strong evidence to support a microglial contribution to the propagation of hyperphosphorylated in tau frontotemporal lobar degeneration associated with tau aggregation. Experimental evidence-albeit limited-also corroborates genetic data pointing to the involvement of cellular adaptive immunity in primary tauopathies. However, it is still unclear whether brain recruitment of peripheral immune cells is an aberrant result of pathological changes or a physiological aspect of the neuroinflammatory response to the tau pathology.
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Affiliation(s)
- Iain J Hartnell
- Clinical Neurosciences, Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, UK
| | - David Blum
- University of Lille, Inserm, CHU-Lille, UMR-S 1172-Lille Neuroscience and Cognition, Lille, France.,Alzheimer & Tauopathies, LabEx DISTALZ, France
| | - James A R Nicoll
- Clinical Neurosciences, Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, UK.,Department of Cellular Pathology, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - Guillaume Dorothee
- Inserm, Sorbonne University, UMRS 938 Saint-Antoine Research Center, Immune System and Neuroinflammation Laboratory, Hôpital Saint-Antoine, Paris, France
| | - Delphine Boche
- Clinical Neurosciences, Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, UK
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16
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Tyrkalska SD, Candel S, Mulero V. The neutrophil inflammasome. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2021; 115:103874. [PMID: 32987011 DOI: 10.1016/j.dci.2020.103874] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 09/21/2020] [Accepted: 09/21/2020] [Indexed: 06/11/2023]
Abstract
Since inflammasomes were discovered in the early 21st century, knowledge about their biology has multiplied exponentially. These cytosolic multiprotein complexes alert the immune system about the presence of infection or tissue damage, and regulate the subsequent inflammatory responses. As inflammasome dysregulation is increasingly associated with numerous autoinflammatory disorders, there is an urgent need for further research into the inflammasome's involvement in the pathogenesis of such diseases in order to identify novel therapeutic targets and treatments. The zebrafish has become a widely used animal model to study human diseases in recent years, and has already provided relevant findings in the field of inflammasome biology including the identification of new components and pathways. We provide a detailed analysis of current knowledge on neutrophil inflammasome biology and compare its features with those of the better known macrophage inflammasome, focusing on its contribution to innate immunity and its relevance for human health. Importantly, a large body of evidence points to a link between neutrophil inflammasome dysfunction and many neutrophil-mediated human diseases, but the real contribution of the neutrophil inflammasome to the pathogenesis of these disorders is largely unknown. Although neutrophils have remained in the shadow of macrophages and monocytes in the field of inflammasome research since the discovery of these multiprotein platforms, recent studies strongly suggest that the importance of the neutrophil inflammasome has been underestimated.
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Affiliation(s)
- Sylwia D Tyrkalska
- Departamento de Biología Celular e Histología, Facultad de Biología, Universidad de Murcia, Spain; Instituto Murciano de Investigación Biosanitaria (IMIB)-Arrixaca, Murcia, Spain.
| | - Sergio Candel
- Departamento de Biología Celular e Histología, Facultad de Biología, Universidad de Murcia, Spain; Instituto Murciano de Investigación Biosanitaria (IMIB)-Arrixaca, Murcia, Spain.
| | - Victoriano Mulero
- Departamento de Biología Celular e Histología, Facultad de Biología, Universidad de Murcia, Spain; Instituto Murciano de Investigación Biosanitaria (IMIB)-Arrixaca, Murcia, Spain; Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Spain.
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17
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Ji J, Hou J, Xia Y, Xiang Z, Han X. NLRP3 inflammasome activation in alveolar epithelial cells promotes myofibroblast differentiation of lung-resident mesenchymal stem cells during pulmonary fibrogenesis. Biochim Biophys Acta Mol Basis Dis 2021; 1867:166077. [PMID: 33515677 DOI: 10.1016/j.bbadis.2021.166077] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 11/15/2020] [Accepted: 12/30/2020] [Indexed: 12/27/2022]
Abstract
Idiopathic pulmonary fibrosis (IPF) is a lethal and agnogenic interstitial lung disease, which has limited therapeutic options. Recently, the NOD-, LRR- and pyrin domain-containing 3 (NLRP3) inflammasome has been demonstrated as an important contributor to various fibrotic diseases following its persistent activation. However, the role of NLRP3 inflammasome in pulmonary fibrogenesis still needs to be further clarified. Here, we found that the activation of the NLRP3 inflammasome was raised in fibrotic lungs. In addition, the NLRP3 inflammasome was found to be activated in alveolar epithelial cells (AECs) in the lung tissue of both IPF patients and pulmonary fibrosis mouse models. Further research revealed that epithelial cells, following activation of the NLRP3 inflammasome, could induce the myofibroblast differentiation of lung-resident mesenchymal stem cells (LR-MSCs). In addition, inhibiting the activation of the NLRP3 inflammasome in epithelial cells promoted the expression of dickkopf-1 (DKK1), a secreted Wnt antagonist. DKK1 was capable of suppressing the profibrogenic differentiation of LR-MSCs and bleomycin-induced pulmonary fibrosis. In conclusion, this study not only provides a further in-depth understanding of the pathogenesis of pulmonary fibrosis, but also reveals a potential therapeutic strategy for disorders associated with pulmonary fibrosis.
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Affiliation(s)
- Jie Ji
- Immunology and Reproduction Biology Laboratory, Medical School, Nanjing University, Nanjing 210093, China; Jiangsu Key Laboratory of Molecular Medicine, Nanjing University, Nanjing, 210093, China; State Key Laboratory of Analytical Chemistry for Life Science, Medical School, Nanjing University, Nanjing 210093, China
| | - Jiwei Hou
- Immunology and Reproduction Biology Laboratory, Medical School, Nanjing University, Nanjing 210093, China; Jiangsu Key Laboratory of Molecular Medicine, Nanjing University, Nanjing, 210093, China; State Key Laboratory of Analytical Chemistry for Life Science, Medical School, Nanjing University, Nanjing 210093, China
| | - Yunhui Xia
- Immunology and Reproduction Biology Laboratory, Medical School, Nanjing University, Nanjing 210093, China; Jiangsu Key Laboratory of Molecular Medicine, Nanjing University, Nanjing, 210093, China; State Key Laboratory of Analytical Chemistry for Life Science, Medical School, Nanjing University, Nanjing 210093, China
| | - Zou Xiang
- Department of Health Technology and Informatics, Faculty of Health and Social Sciences, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Xiaodong Han
- Immunology and Reproduction Biology Laboratory, Medical School, Nanjing University, Nanjing 210093, China; Jiangsu Key Laboratory of Molecular Medicine, Nanjing University, Nanjing, 210093, China; State Key Laboratory of Analytical Chemistry for Life Science, Medical School, Nanjing University, Nanjing 210093, China.
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18
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Wani K, AlHarthi H, Alghamdi A, Sabico S, Al-Daghri NM. Role of NLRP3 Inflammasome Activation in Obesity-Mediated Metabolic Disorders. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:E511. [PMID: 33435142 PMCID: PMC7826517 DOI: 10.3390/ijerph18020511] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 12/22/2020] [Accepted: 01/06/2021] [Indexed: 12/12/2022]
Abstract
NLRP3 inflammasome is one of the multimeric protein complexes of the nucleotide-binding domain, leucine-rich repeat (NLR)-containing pyrin and HIN domain family (PYHIN). When activated, NLRP3 inflammasome triggers the release of pro-inflammatory interleukins (IL)-1β and IL-18, an essential step in innate immune response; however, defective checkpoints in inflammasome activation may lead to autoimmune, autoinflammatory, and metabolic disorders. Among the consequences of NLRP3 inflammasome activation is systemic chronic low-grade inflammation, a cardinal feature of obesity and insulin resistance. Understanding the mechanisms involved in the regulation of NLRP3 inflammasome in adipose tissue may help in the development of specific inhibitors for the treatment and prevention of obesity-mediated metabolic diseases. In this narrative review, the current understanding of NLRP3 inflammasome activation and regulation is highlighted, including its putative roles in adipose tissue dysfunction and insulin resistance. Specific inhibitors of NLRP3 inflammasome activation which can potentially be used to treat metabolic disorders are also discussed.
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Affiliation(s)
| | | | | | | | - Nasser M. Al-Daghri
- Biochemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (K.W.); (H.A.); (A.A.); (S.S.)
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19
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Sharma I, Behl T, Bungau S, Sachdeva M, Kumar A, Zengin G, Arora S. Understanding the role of Inflammasome in Angina Pectoris. Curr Protein Pept Sci 2020; 22:CPPS-EPUB-112184. [PMID: 33292150 DOI: 10.2174/1389203721999201208200242] [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: 06/11/2020] [Revised: 10/08/2020] [Accepted: 10/19/2020] [Indexed: 11/22/2022]
Abstract
Angina pectoris, associated with coronary artery disease, a cardiovascular disease where, pain is caused by adverse oxygen supply in myocardium, resulting in contractility and discomfort in chest. Inflammasomes, triggered by stimuli due to infection and cellular stress have identified to play a vital role in the progression of cardiovascular disorders and thus, causing various symptoms like angina pectoris. Nlrp3 inflammasome, a key contributor in the pathogenesis of angina pectoris, requires activation and primary signaling for the commencement of inflammation. Nlrp3 inflammasome elicit out an inflammatory response by emission of pro inflammatory cytokines by ROS (reactive oxygen species) production, mobilization of K+ efflux and Ca2+ and by activation of lysosome destabilization that eventually causes pyroptosis, a programmed cell death process. Thus, inflammasome are considered to be one of the factors involved in the progression of coronary artery diseases and have an intricate role in development of angina pectoris.
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Affiliation(s)
- Ishita Sharma
- Chitkara College of Pharmacy, Chitkara University, Punjab,. India
| | - Tapan Behl
- Chitkara College of Pharmacy, Chitkara University, Punjab,. India
| | - Simona Bungau
- Department of Pharmacy, Faculty of Medicine of Pharmacy, University of Oradea, Oradea,. Romania
| | - Monika Sachdeva
- Fatima College of Health Science, Al Ain,. United Arab Emirates
| | - Arun Kumar
- Chitkara College of Pharmacy, Chitkara University, Punjab,. India
| | - Gokhan Zengin
- Department of Biology, Faculty of Science, University Campus, Konya,. Turkey
| | - Sandeep Arora
- Chitkara College of Pharmacy, Chitkara University, Punjab,. India
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Abstract
Leprosy is a disease caused by Mycobacterium leprae (ML) with diverse clinical manifestations, which are strongly correlated with the host's immune response. Skin lesions may be accompanied by peripheral neural damage, leading to sensory and motor losses, as well as deformities of the hands and feet. Both innate and acquired immune responses are involved, but the disease has been classically described along a Th1/Th2 spectrum, where the Th1 pole corresponds to the most limited presentations and the Th2 to the most disseminated ones. We discuss this dichotomy in the light of current knowledge of cytokines, Th subpopulations and regulatory T cells taking part in each leprosy presentation. Leprosy reactions are associated with an increase in inflammatory activity both in limited and disseminated presentations, leading to a worsening of previous symptoms or the development of new symptoms. Despite the efforts of many research groups around the world, there is still no adequate serological test for diagnosis in endemic areas, hindering the eradication of leprosy in these regions.
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Affiliation(s)
| | - Maria Angela Bianconcini Trindade
- Departamento de Patologia, University of Sao Paulo, São Paulo, Brazil.,Imunodermatologia, Universidade de São Paulo Hospital das Clínicas, São Paulo, Brazil
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21
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Balahura LR, Selaru A, Dinescu S, Costache M. Inflammation and Inflammasomes: Pros and Cons in Tumorigenesis. J Immunol Res 2020; 2020:2549763. [PMID: 33015196 PMCID: PMC7520695 DOI: 10.1155/2020/2549763] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 08/13/2020] [Accepted: 09/01/2020] [Indexed: 12/17/2022] Open
Abstract
Over the past decade, it has been well established that tumorigenesis is affected by chronic inflammation. During this event, proinflammatory cytokines are produced by numerous types of cells, such as fibroblasts, endothelial cells, macrophages, and tumor cells, and are able to promote the initiation, progression, and metastasis of different types of cancer. When persistent inflammation occurs, activation of inflammasome complexes is initiated, leading to its assembly and further activation of caspase, production of proinflammatory cytokines, and pyroptosis induction. The function of this multiprotein complex is not only to reassure inflammation and to promote cell death, through caspase activity, but also has been identified to have significant contributions during tumorigenesis and cancer development. So far, many efforts have been made in order to extend the knowledge of inflammasome implications and how its components could be targeted as therapeutic agents. Additionally, microRNAs (miRNAs), evolutionary conserved noncoding molecules, have emerged as pivotal players during numerous biological events by regulating gene and protein expression. Therefore, dysregulations of miRNA expressions have been correlated with inflammation during tumor development. In this review, we aim to highlight the dual role of inflammasomes and proinflammatory cytokines during carcinogenesis paired with the distinguished effects of miRNAs upon inflammation cascades during tumor growth and progression.
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Affiliation(s)
- Liliana R Balahura
- Department of Immunology, National Institute for Research and Development in Biomedical Pathology and Biomedical Sciences "Victor Babes", Bucharest 050096, Romania
- Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Bucharest, Bucharest 050095, Romania
| | - Aida Selaru
- Department of Immunology, National Institute for Research and Development in Biomedical Pathology and Biomedical Sciences "Victor Babes", Bucharest 050096, Romania
- Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Bucharest, Bucharest 050095, Romania
| | - Sorina Dinescu
- Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Bucharest, Bucharest 050095, Romania
- The Research Institute of the University of Bucharest, Bucharest 050663, Romania
| | - Marieta Costache
- Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Bucharest, Bucharest 050095, Romania
- The Research Institute of the University of Bucharest, Bucharest 050663, Romania
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22
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Wen W, Qi Z, Wang J. The Function and Mechanism of Enterovirus 71 (EV71) 3C Protease. Curr Microbiol 2020; 77:1968-1975. [PMID: 32556480 DOI: 10.1007/s00284-020-02082-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Accepted: 06/08/2020] [Indexed: 12/13/2022]
Abstract
Enterovirus 71 (EV71) is the main pathogen of the hand, foot, and mouth disease. It was firstly isolated from sputum specimens of infants with central nervous system diseases in California in 1969, and has been repeatedly reported in various parts of the world, especially in the Asia-Pacific region. EV71 3C protein is a 183 amino acid cysteine protease that can cleave most structural and non-structural proteins of EV71. Based on the analysis and understanding of EV71 3C protease, it is helpful to study and treat diseases caused by EV71 virus infection. The EV71 3C protease promotes virus replication by cleaving EV71 synthesis or host proteins. Moreover, EV71 3C protease inhibits the innate immune system and causes apoptosis. At present, in order to deal with the damage caused by the EV71, it is urgent to develop antiviral drugs targeting 3C protease. This review will focus on the structure, function, and mechanism of EV71 3C protease.
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Affiliation(s)
- Weihui Wen
- Department of Microbiology, School of Medicine, Nanchang University, Nanchang, Jiangxi, People's Republic of China
| | - Zixuan Qi
- School of Medicine, Forth Clinical College, Nanchang University, Nanchang, Jiangxi, People's Republic of China
| | - Jing Wang
- Department of Microbiology, School of Medicine, Nanchang University, Nanchang, Jiangxi, People's Republic of China.
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23
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Liaqat A, Asad M, Shoukat F, Khan AU. A Spotlight on the Underlying Activation Mechanisms of the NLRP3 Inflammasome and its Role in Atherosclerosis: A Review. Inflammation 2020; 43:2011-2020. [PMID: 32656610 DOI: 10.1007/s10753-020-01290-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The world's number one cause of death is cardiovascular diseases. The pathogenesis of different disease entities in the cardiovascular disease spectrum is complicated and multifactorial. Inflammation in these complicated etiologies serves as a key position and is a significant cause of atherosclerosis, which contributes to the underlying pathology. Therefore, therapeutic targeting of inflammatory pathways in patients with cardiovascular diseases such as atherosclerosis enhances cardiovascular results. Inflammasomes are intracellular protein complexes engaged in atherosclerosis pathogenesis and activated by multiple danger signals. Emerging proof has revealed that Nod-like receptor protein 3 (NLRP3) inflammasome, which regulates caspase-1 activation and later pro-interleukin processing, triggers inflammatory reactions in the vascular wall and leads to atherosclerotic plaque formation. Inflammasome-mediated signaling interference could decrease inflammation and mitigate illness severity. In this section, we provide an overview of the present literature on the underlying mechanisms leading to the activation of NLRP3 inflammasome and the role of NLRP3 inflammasome in the progression of atherogenesis and highlight the possibility of therapeutic interventions due to mechanisms involved in the of inhibition of NLRP3 activation.
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Affiliation(s)
- Anam Liaqat
- Riphah Institute of Pharmaceutical Sciences, Riphah International University, Islamabad, 44000, Pakistan.
| | - Muhammad Asad
- Armed Forces Institute of Cardiology, National Institute of Heart Diseases, Rawalpindi, Pakistan
| | - Fatima Shoukat
- Riphah Institute of Pharmaceutical Sciences, Riphah International University, Islamabad, 44000, Pakistan
| | - Arif-Ullah Khan
- Riphah Institute of Pharmaceutical Sciences, Riphah International University, Islamabad, 44000, Pakistan
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Castejón-Vega B, Giampieri F, Alvarez-Suarez JM. Nutraceutical Compounds Targeting Inflammasomes in Human Diseases. Int J Mol Sci 2020; 21:E4829. [PMID: 32650482 PMCID: PMC7402342 DOI: 10.3390/ijms21144829] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Revised: 07/02/2020] [Accepted: 07/03/2020] [Indexed: 12/19/2022] Open
Abstract
The macromolecular complex known as "inflammasome" is defined as an intracellular multi-protein complex composed of a sensor receptor (PRR), an adaptor protein and an effector enzyme (caspase-1), which oligomerize when they sense danger, such as how the NLR family, AIM-2 and RIG-1 receptors protect the body against danger via cytokine secretion. Within the NLR members, NLRP3 is the most widely known and studied inflammasome and has been linked to many diseases. Nowadays, people's interest in their lifestyles and nutritional habits is increasing, mainly due to the large number of diseases that seem to be related to both. The term "nutraceutical" has recently emerged as a hybrid term between "nutrition" and "pharmacological" and it refers to a wide range of bioactive compounds contained in food with relevant effects on human health. The relationship between these compounds and diseases based on inflammatory processes has been widely exposed and the compounds stand out as an alternative to the pathological consequences that inflammatory processes may have, beyond their defense and repair action. Against this backdrop, here we review the results of studies using several nutraceutical compounds in common diseases associated with the inflammation and activation of the NLRP3 inflammasomes complex. In general, it was found that there is a wide range of nutraceuticals with effects through different molecular pathways that affect the activation of the inflammasome complex, with positive effects mainly in cardiovascular, neurological diseases, cancer and type 2 diabetes.
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Affiliation(s)
- Beatriz Castejón-Vega
- Research Laboratory, Oral Medicine Department, University of Sevilla, 41009 Sevilla, Spain;
| | - Francesca Giampieri
- Nutrition and Food Science Group, Department of Analytical and Food Chemistry, CITACA, CACTI, University of Vigo, 36310 Vigo, Spain;
- Dipartimento di Scienze Cliniche Specialistiche ed Odontostomatologiche (DISCO)-Sez, Biochimica, Facoltà di Medicina, Università Politecnica delle Marche, 60131 Ancona, Italy
- College of Food Science and Technology, Northwest University, Xi’an 710069, China
| | - José M. Alvarez-Suarez
- Facultad de Ingeniería y Ciencias Aplicadas (FICA), AgroScience & Food Research Group, Universidad de Las Américas, 170125 Quito, Ecuador
- King Fahd Medical Research Center, King Abdulaziz University, 21589 Jeddah, Saudi Arabia
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Effects of oral butyrate and inulin supplementation on inflammation-induced pyroptosis pathway in type 2 diabetes: A randomized, double-blind, placebo-controlled trial. Cytokine 2020; 131:155101. [PMID: 32315958 DOI: 10.1016/j.cyto.2020.155101] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 03/17/2020] [Accepted: 04/11/2020] [Indexed: 12/14/2022]
Abstract
PURPOSE Pyroptosis, a form of inflammatory programmed cell death, is activated in diabetic patients. This study was conducted to investigate the effects of daily consumption of sodium butyrate (NaBut) and high-performance (HP) inulin supplementation, individually or in combination, on the expression of pyroptosis-related genes, microRNA (miR) 146a-5p, miR-9-5p and biomarkers of oxidative stress in patients with type 2 diabetes (T2DM). METHODS In this study, we conducted a randomized, double-blinded, placebo-controlled clinical involving sixty patients with type 2 diabetes. Participants received 600 mg/d of NaBut (group A), 10 g/d of HP inulin (group B), 600 mg/d of NaBut + 10 g/d of HP inulin (group C) or placebo (group D) for 45 consecutive days. We assessed the pyroptosis-related genes mRNA expression in peripheral blood mononuclear cells (PBMCs), as well as the plasmatic levels of miR-146a and miR-9 before and after the intervention. Moreover, blood samples of the patients at baseline and following the intervention were tested for total antioxidant capacity (TAC), superoxide dismutase (SOD) and catalase levels using enzyme-linked immunosorbent assay (ELISA). This study was registered on the Iranian Registry of Clinical Trials website (identifier: IRCT201605262017N29; https://www.irct.ir/). RESULTS Following butyrate supplementation, the relative expression levels of TLR2/4, NF-κB1, Caspase-1, NLRP3, IL-1β & IL-18 were significantly downregulated (p < 0.05). Furthermore, butyrate and concomitant use of butyrate and inulin caused a significant increase in the fold change of miR-146a and miR-9 compared with the placebo group (p < 0.05). Interestingly, the changes in total antioxidant capacity (p = 0.047) and superoxide dismutase (p = 0.006) were significantly increased after butyrate and concomitant use of butyrate and inulin supplement, respectively. CONCLUSION In summary, the change in expression level of miR-146a-5p and miR-9-5p due to butyrate supplementation may have a pivotal role in alleviating of diabetes via inhibiting pyroptosis by targeting TLR2 and NF-κB1. These microRNAs might be considered as potential therapeutic targets in the treatment of type 2 diabetes but further researches is required to prove the link.
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IFN Regulatory Factor 1 Mediates Macrophage Pyroptosis Induced by Oxidized Low-Density Lipoprotein in Patients with Acute Coronary Syndrome. Mediators Inflamm 2019; 2019:2917128. [PMID: 31871426 PMCID: PMC6913184 DOI: 10.1155/2019/2917128] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Accepted: 11/13/2019] [Indexed: 11/18/2022] Open
Abstract
Background Atherosclerosis (AS) is recognized as a chronic inflammatory disease. It is caused by the interaction between inflammatory cells such as macrophages, dendritic cells, and lipoproteins. Evidence has revealed that macrophage pyroptosis in lesion contributes to the formation of the necrotic core and thinning of the fibrous cap, which plays crucial roles in the onset of acute coronary syndrome (ACS). IFN regulatory factor 1 (IRF-1) is a pleiotropic transcription factor involved in various immune processes and cell death. We propose that IRF-1 may be implicated in macrophage pyroptosis in the pathogenesis of AS and ACS. Methods Patients with stable angina, unstable angina, acute myocardial infarction, and clinical presentation of chest pain were enrolled. The expression of IRF-1 in human PBMC-derived macrophages was analyzed. Then, overexpression and inhibition of IRF-1 was performed in macrophages from patients with ACS to explore the possible role and mechanism of IRF-1 involvement in macrophage pyroptosis. Results The expression of IRF-1 in macrophages was upregulated in ACS patients. The overexpression or inhibition of IRF-1 effectively modulated caspase-1 activation, as well as macrophage lysis, expression of gasdermin D-N (GSDMD-N), production of IL-1β and IL-18, and activation of NLRP3-ASC inflammasome, which were all inhibited by caspase-1 inhibitor. Further experiments revealed that pyroptosis and the downstream inflammatory response in AS induced by IRF-1 is a process that is dependent on reactive oxygen species (ROS) generation. Conclusion Our observations suggest that IRF-1 potently activates ox-LDL-induced macrophage pyroptosis and may play an important role in AS and ACS.
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NLRP3 inflammasome as a treatment target in atherosclerosis: A focus on statin therapy. Int Immunopharmacol 2019; 73:146-155. [PMID: 31100709 DOI: 10.1016/j.intimp.2019.05.006] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Revised: 04/15/2019] [Accepted: 05/06/2019] [Indexed: 12/12/2022]
Abstract
Activation of NOD-like receptor (NLR) family and pyrin domain containing 3 (NLRP3) inflammasome contributes to inflammation and may lead to atherosclerosis. The NLRP3 inflammasome as a molecular platform regulates the activation of ATP signaling, K+ efflux, cathepsin-B activity, lysosomal function and pro-inflammatory cytokines (i.e. IL-1β and IL-18). Statins has been widely prescribed for the treatment of hyperlipidemia and cardiovascular diseases. In addition to lipid-lowering effect, statins have immunomodulatory, anti-inflammatory, antioxidant and antiapoptotic functions. An increasing number of studies indicated NLRP3 inflammasome and their downstream mediators as important targets for statin drugs in inflammatory diseases. In this review, we discussed different aspect of the NLRP3 inflammasome signaling pathways and focused on the effect of statin drugs on NLRP3 inflammasomes in association to atherosclerosis in order to elucidate possible targets for future research and clinical settings.
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Bertinaria M, Gastaldi S, Marini E, Giorgis M. Development of covalent NLRP3 inflammasome inhibitors: Chemistry and biological activity. Arch Biochem Biophys 2018; 670:116-139. [PMID: 30448387 DOI: 10.1016/j.abb.2018.11.013] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 11/12/2018] [Accepted: 11/14/2018] [Indexed: 12/12/2022]
Abstract
The NOD-like receptor family, pyrin domain-containing 3 (NLRP3) inflammasome is the best recognized and most widely implicated regulator of caspase-1 activation. It is a key regulator of innate immune response and is involved in many pathophysiological processes. Recent evidences for its inappropriate activation in autoinflammatory, autoimmune, as well as in neurodegenerative diseases attract a growing interest toward the development of small molecules NLRP3 inhibitors. Based on the knowledge of biochemical and structural aspects of NLRP3 activation, one successful strategy in the identification of NLRP3 inhibitors relies on the development of covalent irreversible inhibitors. Covalent inhibitors are reactive electrophilic molecules able to alkylate nucleophiles in the target protein. These inhibitors could ensure good efficacy and prolonged duration of action both in vitro and in vivo. In spite of these advantages, effects on other signalling pathways, prone to alkylation, may occur. In this review, we will illustrate the chemistry and the biological action of the most studied covalent NLRP3 inhibitors developed so far. A description of what we know about their mechanism of action will address the reader toward a critical understanding of NLRP3 inhibition by electrophilic compounds.
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Affiliation(s)
- Massimo Bertinaria
- Dipartimento di Scienza e Tecnologia del Farmaco, Università degli Studi di Torino, Via P. Giuria 9, 10125, Torino, Italy.
| | - Simone Gastaldi
- Dipartimento di Scienza e Tecnologia del Farmaco, Università degli Studi di Torino, Via P. Giuria 9, 10125, Torino, Italy
| | - Elisabetta Marini
- Dipartimento di Scienza e Tecnologia del Farmaco, Università degli Studi di Torino, Via P. Giuria 9, 10125, Torino, Italy
| | - Marta Giorgis
- Dipartimento di Scienza e Tecnologia del Farmaco, Università degli Studi di Torino, Via P. Giuria 9, 10125, Torino, Italy
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Silva LM, de Sousa JR, Hirai KE, Dias LB, Furlaneto IP, Carneiro FRO, de Souza Aarão TL, Sotto MN, Quaresma JAS. The inflammasome in leprosy skin lesions: an immunohistochemical evaluation. Infect Drug Resist 2018; 11:2231-2240. [PMID: 30519061 PMCID: PMC6237140 DOI: 10.2147/idr.s172806] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Objective Leprosy is a chronic infectious disease presenting with a spectrum of clinical manifestations that correspond to the type of immune response that develops in the host. Factors that may be involved in this process include inflammasomes, cytosolic proteins responsible for the activation of caspase 1, IL-1β and IL-18 secretion, and induction of a type of death called pyroptosis. Patients and methods We evaluated the expression of inflammasome markers (nucleotide-binding oligomerization domain-like receptor containing pyrin domain 1 [NLRP1], nucleotide-binding oligomerization domain-like receptor containing pyrin domain 3 [NLRP3], caspase 1, IL-1β, and IL-18) by immunohistochemistry in 43 samples of skin lesions of leprosy patients from the groups indeterminate (I) leprosy (13 patients), tuberculoid (TT) leprosy (15 patients), and lepromatous leprosy (LL; 15 patients). Results The evaluated markers were most upregulated in LL lesions, followed by lesions of TT leprosy and I leprosy. Differences were statistically significant between the I leprosy and LL leprosy forms and between the I leprosy and TT leprosy forms. Positive and significant correlations were found between IL-18 and caspase 1 in LL (r=0.7516, P=0.0012) and TT leprosy (r=0.7366, P=0.0017). In I leprosy, correlations were detected between caspase 1 and IL-1β (r=0.6412, P=0.0182), NLRP1 and IL-18 (r=0.5585, P=0.473), NLRP3 and IL-18 (r=0.6873, P=0.0094), and NLRP1 and NLRP3 (r=0.8040, P=0.0009). Conclusion The expression of inflammasome markers in LL lesions indicates the ineffectiveness of this protein complex in controlling the infection. Caspase 1 may be involved in the pyroptotic cell death in the lepromatous form of the disease. Inflammasomes may act together in the initial phase of I leprosy; this phenomenon may influence the clinical outcome of the disease.
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Affiliation(s)
- Luciana Mota Silva
- Center of Biological and Health Science, State University of Para, Belem, Brazil,
| | - Jorge Rodrigues de Sousa
- Tropical Medicine Center, Federal Do Para University, Belem, Brazil, .,Evandro Chagas Institute, Ministry of Health, Ananindeua, Brazil,
| | - Kelly Emi Hirai
- Center of Biological and Health Science, State University of Para, Belem, Brazil,
| | - Leônidas Braga Dias
- Center of Biological and Health Science, State University of Para, Belem, Brazil,
| | | | | | | | - Mirian Nacagami Sotto
- School of Medicine, Sao Paulo University, Sao Paulo, Brazil.,Tropical Medicine Institute, Sao Paulo University, Sao Paulo, Brazil,
| | - Juarez Antonio Simões Quaresma
- Center of Biological and Health Science, State University of Para, Belem, Brazil, .,Tropical Medicine Center, Federal Do Para University, Belem, Brazil, .,Evandro Chagas Institute, Ministry of Health, Ananindeua, Brazil, .,Tropical Medicine Institute, Sao Paulo University, Sao Paulo, Brazil,
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Boche D, Brough D. Mini-symposium: Role of the inflammasome in brain pathogenesis: a potential therapeutic target? - introduction. Brain Pathol 2018; 27:190-191. [PMID: 28009081 DOI: 10.1111/bpa.12481] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Accepted: 12/16/2016] [Indexed: 01/01/2023] Open
Affiliation(s)
- Delphine Boche
- University of Southampton, Clinical Neurosciences, Clinical and Experimental Sciences, Faculty of Medicine, Southampton, United Kingdom
| | - David Brough
- Faculty of Biology, Medicine and Health University of Manchester, Michael Smith Building, Oxford Road, Manchester, M13 9PT
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Putatunda R, Bethea JR, Hu WH. Potential immunotherapies for traumatic brain and spinal cord injury. Chin J Traumatol 2018; 21:125-136. [PMID: 29759918 PMCID: PMC6033730 DOI: 10.1016/j.cjtee.2018.02.002] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2018] [Accepted: 02/08/2018] [Indexed: 02/04/2023] Open
Abstract
Traumatic injury of the central nervous system (CNS) including brain and spinal cord remains a leading cause of morbidity and disability in the world. Delineating the mechanisms underlying the secondary and persistent injury versus the primary and transient injury has been drawing extensive attention for study during the past few decades. The sterile neuroinflammation during the secondary phase of injury has been frequently identified substrate underlying CNS injury, but as of now, no conclusive studies have determined whether this is a beneficial or detrimental role in the context of repair. Recent pioneering studies have demonstrated the key roles for the innate and adaptive immune responses in regulating sterile neuroinflammation and CNS repair. Some promising immunotherapeutic strategies have been recently developed for the treatment of CNS injury. This review updates the recent progress on elucidating the roles of the innate and adaptive immune responses in the context of CNS injury, the development and characterization of potential immunotherapeutics, as well as outstanding questions in this field.
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Affiliation(s)
- Raj Putatunda
- Center for Metabolic Disease Research, Department of Pathology and Laboratory Medicine, Temple University Lewis Katz School of Medicine, 3500 N Broad Street, Philadelphia, PA, USA
| | - John R. Bethea
- Department of Biology, Drexel University, Philadelphia, PA, USA
| | - Wen-Hui Hu
- Center for Metabolic Disease Research, Department of Pathology and Laboratory Medicine, Temple University Lewis Katz School of Medicine, 3500 N Broad Street, Philadelphia, PA, USA,Corresponding author.
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NLRP3: A Novel Mediator in Cardiovascular Disease. J Immunol Res 2018; 2018:5702103. [PMID: 29850631 PMCID: PMC5911339 DOI: 10.1155/2018/5702103] [Citation(s) in RCA: 118] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Accepted: 02/18/2018] [Indexed: 12/17/2022] Open
Abstract
Cardiovascular disease is a major cause of death worldwide. Inflammasome infiltration has been identified to play a central role in the pathological progression of certain cardiovascular diseases, such as vascular damage spanning atherosclerosis, aneurysm, or arteritis; ischemic heart disease; and other nonischemic heart diseases including diabetic cardiomyopathy, chronic heart failure, and hypertension- or virus-induced cardiac dysfunction. The NLRP3 inflammasome, a key participant in the innate immune response, requires both priming and activation signals for the initiation of inflammation. Piling evidence has revealed that the NLRP3 inflammasome could exert an inflammatory effect by inducing the secretion of proinflammatory cytokines (i.e., IL-1β, IL-18) or could cause pyroptosis, a novel programmed cell death process, in a caspase-1-dependent manner. The importance of the NLRP3 inflammasome in cardiac disease has been broadly investigated. In this review, we present the current knowledge regarding the function of NLRP in vascular disease, ischemic heart disease, and nonischemic heart disease and discuss the potential therapeutic options targeting the NLRP3 inflammasome.
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Kumar B, Cashman SM, Kumar-Singh R. Complement-Mediated Activation of the NLRP3 Inflammasome and Its Inhibition by AAV-Mediated Delivery of CD59 in a Model of Uveitis. Mol Ther 2018; 26:1568-1580. [PMID: 29678656 DOI: 10.1016/j.ymthe.2018.03.012] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Revised: 03/01/2018] [Accepted: 03/15/2018] [Indexed: 12/21/2022] Open
Abstract
Uveitis is an inflammatory disorder of the eye responsible for approximately 10%-15% of blindness in the US. In this study, we examined the role of the complement membrane attack complex (MAC) and the NLRP3 inflammasome in the pathogenesis of experimental autoimmune uveitis (EAU) in normal and C9-/- mice that are incapable of assembling the MAC. We discovered that the MAC and the NLRP3 inflammasome and associated production of IL-1β are elevated in EAU mice and that MAC may be involved in regulation of Th1 and Th17 cell differentiation. In contrast, MAC and the NLRP3 inflammasome were not elevated in C9-/- mice. However, EAU-associated pathophysiology including retinal structure and function were not rescued in C9-/- mice. Unexpectedly, AAV-mediated delivery of sCD59, an inhibitor of C9 incorporation into the MAC, successfully attenuated activation of the NLRP3 inflammasome and EAU pathology as well as MAC. Our studies provide an improved understanding of the role of the MAC and the NLRP3 inflammasome in EAU as well as suggest a novel approach for the treatment of uveitis.
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Affiliation(s)
- Binit Kumar
- Department of Developmental, Molecular and Chemical Biology, Tufts University School of Medicine, Boston, MA 02111, USA
| | - Siobhan M Cashman
- Department of Developmental, Molecular and Chemical Biology, Tufts University School of Medicine, Boston, MA 02111, USA
| | - Rajendra Kumar-Singh
- Department of Developmental, Molecular and Chemical Biology, Tufts University School of Medicine, Boston, MA 02111, USA.
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Mortezaee K, Khanlarkhani N, Beyer C, Zendedel A. Inflammasome: Its role in traumatic brain and spinal cord injury. J Cell Physiol 2018; 233:5160-5169. [PMID: 29150951 DOI: 10.1002/jcp.26287] [Citation(s) in RCA: 167] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2017] [Revised: 11/05/2017] [Accepted: 11/14/2017] [Indexed: 12/19/2022]
Abstract
Traumatic brain injury (TBI) and spinal cord injury (SCI) are pathological events that lead to neuropathological conditions which have in consequence the initiation of pro-inflammatory cytokine production. Neuroinflammation plays a key role in the secondary phase of both TBI and SCI after initial cell death. Activation of cytoplasmic inflammasome complexes is regarded as the essential step of neuroinflammation and a key trigger for neuronal death called pyroptosis. Inflammasome complexes are involved in activation of caspase-1 which catalyzes the cleavage of pro-interleukins into their active forms (including interleukin-18 [IL-18] and IL-1β). The focus of this article is to discuss the time-course and regulation of inflammasome assembly and activation during TBI and SCI and their targeting in designing therapeutic approaches. We particularly focus on the inflammasomes NLRP1 and NLRP3 which play a pivotal function during TBI and SCI in the central nervous system (CNS).
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Affiliation(s)
- Keywan Mortezaee
- Department of Anatomy, School of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Neda Khanlarkhani
- Department of Anatomy, School of Medicine, Tehran University of Medical Science, Tehran, Iran
| | - Cordian Beyer
- Instituteof Neuroanatomy, School of Medicine, RWTH Aachen University, Aachen, Germany
| | - Adib Zendedel
- Instituteof Neuroanatomy, School of Medicine, RWTH Aachen University, Aachen, Germany.,Giulan Neuroscience Research Center, Department of Anatomical Sciences, Faculty of Medicine, Guilan University of Medical Sciences, Rasht, Iran
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Li JR, Xu HZ, Nie S, Peng YC, Fan LF, Wang ZJ, Wu C, Yan F, Chen JY, Gu C, Wang C, Chen JS, Wang L, Chen G. Fluoxetine-enhanced autophagy ameliorates early brain injury via inhibition of NLRP3 inflammasome activation following subrachnoid hemorrhage in rats. J Neuroinflammation 2017; 14:186. [PMID: 28903766 PMCID: PMC5598033 DOI: 10.1186/s12974-017-0959-6] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2017] [Accepted: 09/05/2017] [Indexed: 12/22/2022] Open
Abstract
Background The NLRP3 inflammasome is a multiprotein complex that regulates the innate immune inflammatory response by activating caspase-1 and subsequent IL-1β and IL-18. Fluoxetine has been shown to have the anti-inflammatory properties in many disease models. However, the effects and mechanisms of these effects of fluoxetine in early brain injury after subarachnoid hemorrhage (SAH) have not been defined. Methods The SAH model was induced by an endovascular perforation in adult male Sprague-Dawley (SD) rats weighing 300–320 g. N-Ac-Tyr-Val-Ala-Asp-chloromethyl ketone (AC-YVAD-CMK) was injected intraperitoneally (5 mg/kg) 1 h after SAH. Fluoxetine was administered via intravenous route 6 h after SAH. 3-Methyladenine (3-MA) was intracerebroventricularly injected 20 min before SAH. SAH grade, neurological function, brain water content, propidium iodide (PI) staining, western blot, double immunostaining, and transmission electron microscopy were performed. Results Expression of caspase-1 increased and peaked at 24 h after SAH. Caspase activation was along with the increased necrotic cells, which occurred mainly in neurons. Necrotic cell death of microglia and astrocyte were also found. Administration of AC-YVAD-CMK, a caspase-1 inhibitor, reduced the expression of IL-1β and IL-18 and the number of PI-positive cells, attenuated brain edema, and improved neurological function, which was also observed in fluoxetine-treated rats. Furthermore, fluoxetine treatment significantly decreased the expression of NLRP3 and cleaved caspase-1 and upregulated the expression of beclin-1, a marker for autophagy. Finally, the effects of fluoxetine in NLRP3 inflammasome activation were reversed by additional 3-MA administration. Conclusions Together, our present study indicated that NLRP3 inflammasome and caspase-1 activation play a deleterious role in early brain injury and fluoxetine mitigates NLRP3 inflammasome and caspase-1 activation through autophagy activation after SAH, providing a potential therapeutic agent for SAH treatment. Electronic supplementary material The online version of this article (10.1186/s12974-017-0959-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Jian-Ru Li
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Hang-Zhe Xu
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Sheng Nie
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Yu-Cong Peng
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Lin-Feng Fan
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Zhi-Jiang Wang
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Cheng Wu
- Department of Neurosurgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Feng Yan
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Jing-Yin Chen
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Chi Gu
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Chun Wang
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Jing-Sen Chen
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Lin Wang
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Gao Chen
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.
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Soumelis V. Molecular and cellular discoveries in inflammatory dermatoses. J Eur Acad Dermatol Venereol 2017; 31 Suppl 5:3-7. [PMID: 28805939 DOI: 10.1111/jdv.14373] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Accepted: 05/30/2017] [Indexed: 12/14/2022]
Abstract
It was no earlier than 1986 that T helper (Th)1 and Th2 cells were described for the first time, opening the field of lymphocyte diversity and the investigation of the physiopathology of inflammatory diseases such as atopic dermatitis and psoriasis. Since that time, much research has been carried out showing a very complex communication network leading to inflammatory responses. Nowadays, understanding the cellular and molecular components of the inflammatory network and of the different crosstalks not only for groups of diseases but also for the individual patient is mandatory for developing and personalizing treatments. The aim of the present proceeding was to provide an update concerning some of the most recent molecular and cellular discoveries in inflammatory skin diseases and especially of AD.
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Affiliation(s)
- V Soumelis
- Department of Immunology, INSERM U932, Institut Curie, Paris, France
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