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Jackson EK, Gillespie DG, Mi Z, Birder LA, Tofovic SP. 8-Aminoguanine and its actions in the metabolic syndrome. Sci Rep 2024; 14:22652. [PMID: 39349636 PMCID: PMC11442972 DOI: 10.1038/s41598-024-73159-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2024] [Accepted: 09/16/2024] [Indexed: 10/04/2024] Open
Abstract
The metabolic syndrome is characterized by obesity, insulin resistance, dyslipidemia and hypertension and predisposes to cardiorenal injury. Here, we tested our hypothesis that 8-aminoguanine, an endogenous purine, exerts beneficial effects in Zucker Diabetic-Sprague Dawley (ZDSD) rats, a preclinical model of the metabolic syndrome. ZDSD rats were instrumented for blood pressure radiotelemetry and randomized to vehicle or 8-aminoguanine (10 mg/kg/day, po). The protocol was divided into four phases: Phase 1: 17 days of tap water/normal diet; Phase 2: 30 days of 1% saline/normal diet; Phase 3: 28 days of 1% saline/diabetogenic diet; Phase 4: acute/terminal measurements. 8-Aminoguanine: (1) decreased mean arterial blood pressure (P = 0.0004; 119.5 ± 1.0 (vehicle) versus 116.3 ± 1.0 (treated) mmHg) throughout all three phases of the radiotelemetry study; (2) rebalanced the purine metabolome away from hypoxanthine (pro-inflammatory) and towards inosine (anti-inflammatory); (3) reduced by 71% circulating IL-1β, a cytokine that contributes to hypertension-induced adverse cardiovascular events and type 2 diabetes; (4) attenuated renovascular responses to angiotensin II; (5) improved cardiac and renal histopathology; (6) attenuated diet-induced polydipsia/polyuria; and (7) reduced HbA1c. In the metabolic syndrome, 8-aminoguanine lowers blood pressure, improves diabetes and reduces organ damage, likely by rebalancing the purine metabolome leading to reductions in injurious cytokines such as IL-1β.
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Affiliation(s)
- Edwin K Jackson
- Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, 15219, USA.
- Department of Pharmacology and Chemical Biology, 100 Technology Drive, Room 514, University of Pittsburgh School of Medicine, Pittsburgh, PA, 15219, USA.
| | - Delbert G Gillespie
- Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, 15219, USA
| | - Zaichuan Mi
- Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, 15219, USA
| | - Lori A Birder
- Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, 15219, USA
- Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, 15261, USA
| | - Stevan P Tofovic
- Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, 15219, USA
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2
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Huang J, Wang Y, Jia X, Zhao C, Zhang M, Bao M, Fu P, Cheng C, Shi R, Zhang X, Cui J, Wan G, Xu A. The human disease-associated gene ZNFX1 controls inflammation through inhibition of the NLRP3 inflammasome. EMBO J 2024:10.1038/s44318-024-00236-9. [PMID: 39333773 DOI: 10.1038/s44318-024-00236-9] [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: 02/21/2024] [Revised: 08/13/2024] [Accepted: 08/20/2024] [Indexed: 09/30/2024] Open
Abstract
Inherited deficiency of zinc finger NFX1-type containing 1 (ZNFX1), a dsRNA virus sensor, is associated with severe familial immunodeficiency, multisystem inflammatory disease, increased susceptibility to viruses, and early mortality. However, limited treatments for patients with pathological variants of ZNFX1 exist due to an incomplete understanding of the diseases resulting from ZNFX1 mutations. Here, we demonstrate that ZNFX1 specifically inhibits the activation of the NLR family pyrin domain-containing protein 3 (NLRP3) inflammasome in response to NLRP3 activators both in vitro and in vivo. ZNFX1 retains NLRP3 in the cytoplasm and prevents its accumulation in the TGN38 + /TGN46+ vesicles in the resting state. Upon NLRP3 inflammasome activation, ZNFX1 is cleaved by caspase-1, establishing a feed-forward loop that promotes NLRP3 accumulation in the trans-Golgi network (TGN) and amplifies the activity of the downstream cascade. Expression of wild-type ZNFX1, but not of ZNFX1 with human pathogenic mutations, rescues the impairment of NLRP3 inflammasome inhibition. Our findings reveal a dual role of ZNFX1 in virus sensing and suppression of inflammation, which may become valuable for the development of treatments for ZNFX1 mutation-related diseases.
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Affiliation(s)
- Jing Huang
- Guangdong Provincial Key Laboratory of Pharmaceutical Functional Genes, MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong, 510275, China
| | - Yao Wang
- Beijing Research Institute of Chinese Medicine, School of Life Science, Beijing University of Chinese Medicine, Beijing, 100029, China.
| | - Xin Jia
- Beijing Research Institute of Chinese Medicine, School of Life Science, Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Changfeng Zhao
- Guangdong Provincial Key Laboratory of Pharmaceutical Functional Genes, MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong, 510275, China
| | - Meiqi Zhang
- Beijing Research Institute of Chinese Medicine, School of Life Science, Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Mi Bao
- Guangdong Provincial Key Laboratory of Pharmaceutical Functional Genes, MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong, 510275, China
| | - Pan Fu
- Guangdong Provincial Key Laboratory of Pharmaceutical Functional Genes, MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong, 510275, China
| | - Cuiqin Cheng
- Beijing Research Institute of Chinese Medicine, School of Life Science, Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Ruona Shi
- CAS Key Laboratory of Regenerative Biology, Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, GIBH-HKU Guangdong-Hong Kong Stem Cell and Regenerative Medicine Research Centre, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, Guangdong, 510530, China
- Center for Cell Lineage and Atlas, BioLand Laboratory, Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangzhou, Guangdong, 510530, China
| | - Xiaofei Zhang
- CAS Key Laboratory of Regenerative Biology, Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, GIBH-HKU Guangdong-Hong Kong Stem Cell and Regenerative Medicine Research Centre, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, Guangdong, 510530, China
- Center for Cell Lineage and Atlas, BioLand Laboratory, Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangzhou, Guangdong, 510530, China
| | - Jun Cui
- Guangdong Provincial Key Laboratory of Pharmaceutical Functional Genes, MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong, 510275, China
| | - Gang Wan
- Guangdong Provincial Key Laboratory of Pharmaceutical Functional Genes, MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong, 510275, China.
| | - Anlong Xu
- Guangdong Provincial Key Laboratory of Pharmaceutical Functional Genes, MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong, 510275, China.
- Beijing Research Institute of Chinese Medicine, School of Life Science, Beijing University of Chinese Medicine, Beijing, 100029, China.
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3
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Liu Y, Pan R, Ouyang Y, Gu W, Xiao T, Yang H, Tang L, Wang H, Xiang B, Chen P. Pyroptosis in health and disease: mechanisms, regulation and clinical perspective. Signal Transduct Target Ther 2024; 9:245. [PMID: 39300122 DOI: 10.1038/s41392-024-01958-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2024] [Revised: 08/14/2024] [Accepted: 08/26/2024] [Indexed: 09/22/2024] Open
Abstract
Pyroptosis is a type of programmed cell death characterized by cell swelling and osmotic lysis, resulting in cytomembrane rupture and release of immunostimulatory components, which play a role in several pathological processes. Significant cellular responses to various stimuli involve the formation of inflammasomes, maturation of inflammatory caspases, and caspase-mediated cleavage of gasdermin. The function of pyroptosis in disease is complex but not a simple angelic or demonic role. While inflammatory diseases such as sepsis are associated with uncontrollable pyroptosis, the potent immune response induced by pyroptosis can be exploited as a therapeutic target for anti-tumor therapy. Thus, a comprehensive review of the role of pyroptosis in disease is crucial for further research and clinical translation from bench to bedside. In this review, we summarize the recent advancements in understanding the role of pyroptosis in disease, covering the related development history, molecular mechanisms including canonical, non-canonical, caspase 3/8, and granzyme-mediated pathways, and its regulatory function in health and multiple diseases. Moreover, this review also provides updates on promising therapeutic strategies by applying novel small molecule inhibitors and traditional medicines to regulate pyroptosis. The present dilemmas and future directions in the landscape of pyroptosis are also discussed from a clinical perspective, providing clues for scientists to develop novel drugs targeting pyroptosis.
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Affiliation(s)
- Yifan Liu
- The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University/Hunan Cancer Hospital, Changsha, 410013, China
- Department of Oncology, Xiangya Hospital, Central South University, 87th Xiangya road, Changsha, 410008, Hunan province, China
| | - Renjie Pan
- The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University/Hunan Cancer Hospital, Changsha, 410013, China
| | - Yuzhen Ouyang
- The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University/Hunan Cancer Hospital, Changsha, 410013, China
- Department of Neurology, Xiangya Hospital, Central South University, 87th Xiangya road, Changsha, 410008, Hunan province, China
| | - Wangning Gu
- The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University/Hunan Cancer Hospital, Changsha, 410013, China
| | - Tengfei Xiao
- The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University/Hunan Cancer Hospital, Changsha, 410013, China
| | - Hongmin Yang
- The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University/Hunan Cancer Hospital, Changsha, 410013, China
| | - Ling Tang
- The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University/Hunan Cancer Hospital, Changsha, 410013, China
| | - Hui Wang
- The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University/Hunan Cancer Hospital, Changsha, 410013, China.
| | - Bo Xiang
- The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University/Hunan Cancer Hospital, Changsha, 410013, China.
| | - Pan Chen
- The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University/Hunan Cancer Hospital, Changsha, 410013, China.
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Liu J, Xiao Y, Xu Q, Xu Y, Guo M, Hu Y, Wang Y, Wang Y. Britannilactone 1-O-acetate induced ubiquitination of NLRP3 inflammasome through TRIM31 as a protective mechanism against reflux esophagitis-induced esophageal injury. Chin Med 2024; 19:118. [PMID: 39215331 PMCID: PMC11363507 DOI: 10.1186/s13020-024-00986-y] [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: 12/29/2023] [Accepted: 08/22/2024] [Indexed: 09/04/2024] Open
Abstract
BACKGROUND Reflux esophagitis (RE) is a disease in which inflammation of the esophageal mucosa owing to the reflux of gastric contents into the esophagus results in cytokine damage. Britannilactone 1-O-acetate (Brt) has anti-inflammatory effects, significantly inhibiting the activation of the NLRP3 inflammasome, leading to a decrease in inflammatory factors including IL-1 β, IL-6, and TNF-α. However, the mechanism underlying its protective effect against RE-induced esophageal injury remains unclear. In the present study, we investigated the protective mechanism of TRIM31 against NLRP3 ubiquitination-induced RE both in vivo and in vitro. METHODS A model of RE was established in vivo in rats by the method of "4.2 mm pyloric clamp + 2/3 fundoplication". In vitro, the mod was constructed by using HET-1A (esophageal epithelial cells) and exposing the cells to acid, bile salts, and acidic bile salts. The 3-[4,5-dimethylthiazol-2-yl]-2,5 diphenyl tetrazolium bromide (MTT) assay was used to screen the concentration of administered drugs, and the viability of HET-1A cells in each group. HE staining was used to assess the degree of pathological damage in esophageal tissues. Toluidine blue staining was used to detect whether the protective function of the esophageal epithelial barrier was damaged and restored. The enzyme-linked immunosorbent assay (ELISA) was used to detect the levels of IL-1 β, IL-6, and TNF-α factors in serum. Immunohistochemistry (IHC) was used to detect the expression level of NLRP3 in esophageal tissues. The molecular docking and Co-immunoprecipitation assay (Co-IP assay) were used to detect the TRIM31 interacts with NLRP3. Western blotting detected the Claudin-4, Claudin-5, The G-protein-coupled receptor calcium-sensitive receptor (CaSR), NLRP3, TRIM31, ASC, C-Caspase1, and Caspase1 protein expression levels. RESULTS Brt could alleviate RE inflammatory responses by modulating serum levels of IL-1 β, IL-6, and TNF-α. It also activated the expression of NLRP3, ASC, Caspase 1, and C-Caspase-1 in HET-1A cells. Brt also attenuated TRIM31/NLRP3-induced pathological injury in rats with RE through a molecular mechanism consistent with the in vitro results. CONCLUSIONS Brt promotes the ubiquitination of NLRP3 through TRIM31 and attenuates esophageal epithelial damage induced by RE caused by acidic bile salt exposure. This study provides valuable insights into the mechanism of action of Brt in the treatment of RE and highlights its promising application in the prevention of NLRP3 inflammatory vesicle-associated inflammatory pathological injury.
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Affiliation(s)
- Ju Liu
- Office of Science and Technology Administration, Kunshan Hospital of Traditional Chinese Medicine, Kunshan, China
| | - Yang Xiao
- Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Qianfei Xu
- Department of Spleen, Stomach and Hepatobiliary, Kunshan Hospital of Traditional Chinese Medicine, Kunshan, China
| | - Yunyan Xu
- Preventive Treatment Department, Kunshan Hospital of Traditional Chinese Medicine, Kunshan, China
| | - Manman Guo
- Pharmaceutical Department, Kunshan Hospital of Traditional Chinese Medicine, Kunshan, China
| | - Yun Hu
- Department of Spleen, Stomach and Hepatobiliary, Kunshan Hospital of Traditional Chinese Medicine, Kunshan, China
| | - Yan Wang
- Nanjing University of Chinese Medicine, Nanjing, 210023, China.
| | - Yi Wang
- Pharmaceutical Department, Kunshan Hospital of Traditional Chinese Medicine, Kunshan, China.
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Liu C, Fan C, Liu J, Zhang S, Tang H, Liu Y, Zhang S, Wu Q, Zhang J, Qi Z, Shen Y. YOD1 protects against MRSA sepsis-induced DIC through Lys33-linked deubiquitination of NLRP3. Cell Death Dis 2024; 15:360. [PMID: 38789414 PMCID: PMC11126606 DOI: 10.1038/s41419-024-06731-5] [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: 11/20/2023] [Revised: 05/03/2024] [Accepted: 05/08/2024] [Indexed: 05/26/2024]
Abstract
Disseminated intravascular coagulation (DIC) is considered to be the most common and lethal complication of sepsis. NLR-family pyrin domain-containing-3 (NLRP3) inflammasome plays an important role in host defense against microbial pathogens, and its deregulation may cause coagulation cascade and should be strictly managed. Here, we identified the deubiquitinase YOD1, which played a vital role in regulating coagulation in a NLRP3 inflammasome-dependent manner in sepsis induced by methicillin-resistant Staphylococcus aureus (MRSA). YOD1 interacted with NLRP3 to remove K33-linked ubiquitination of NLRP3 based on its deubiquitinating enzyme activity and specifically inhibited expression of NLRP3 as well as activation of NLRP3 inflammasome. Deficiency of YOD1 expression enhanced NLRP3 inflammasome activation and coagulation both in vitro and in vivo. In addition, pharmacological inhibition of the NLRP3 effectively improved coagulation and alleviated organ injury in Yod1-/- mice infected with MRSA. Thus, our study reported that YOD1 is a key regulator of coagulation during MRSA infection, and provided YOD1 as a potential therapeutic target for the treatment of NLRP3 inflammasome-related diseases, especially MRSA sepsis-induced DIC.
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Affiliation(s)
- Chang Liu
- School of Medical Technology, Tianjin Medical University, Tianjin, China
- Key Laboratory of Emergency and Trauma of Ministry of Education, Hainan Medical University, Haikou, China
| | - Caihong Fan
- School of Medical Technology, Tianjin Medical University, Tianjin, China
| | - Jia Liu
- School of Medical Technology, Tianjin Medical University, Tianjin, China
| | - Shiqi Zhang
- School of Medical Technology, Tianjin Medical University, Tianjin, China
| | - Huixin Tang
- School of Medical Technology, Tianjin Medical University, Tianjin, China
| | - Yashan Liu
- School of Medical Technology, Tianjin Medical University, Tianjin, China
| | - Shengzheng Zhang
- Department of Molecular Pharmacology, School of Medicine, Nankai University, Tianjin, China
| | - Qiang Wu
- Key Laboratory of Emergency and Trauma of Ministry of Education, Hainan Medical University, Haikou, China
| | | | - Zhi Qi
- Department of Molecular Pharmacology, School of Medicine, Nankai University, Tianjin, China.
- Institute of Digestive Disease, Shengli Oilfield Central Hospital, Dongying, China.
- Tianjin Key Laboratory of General Surgery in Construction, Tianjin Union Medical Center, Tianjin, China.
- The First Department of Critical Care Medicine, The First Affiliated Hospital of Shihezi University, Shihezi, China.
| | - Yanna Shen
- School of Medical Technology, Tianjin Medical University, Tianjin, China.
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6
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Gurubaran IS. Mitochondrial damage and clearance in retinal pigment epithelial cells. Acta Ophthalmol 2024; 102 Suppl 282:3-53. [PMID: 38467968 DOI: 10.1111/aos.16661] [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: 01/24/2024] [Accepted: 01/31/2024] [Indexed: 03/13/2024]
Abstract
Age-related macular degeneration (AMD) is a devastating eye disease that causes permanent vision loss in the central part of the retina, known as the macula. Patients with such severe visual loss face a reduced quality of life and are at a 1.5 times greater risk of death compared to the general population. Currently, there is no cure for or effective treatment for dry AMD. There are several mechanisms thought to underlie the disease, for example, ageing-associated chronic oxidative stress, mitochondrial damage, harmful protein aggregation and inflammation. As a way of gaining a better understanding of the molecular mechanisms behind AMD and thus developing new therapies, we have created a peroxisome proliferator-activated receptor gamma coactivator 1-alpha and nuclear factor erythroid 2-related factor 2 (PGC1α/NFE2L2) double-knockout (dKO) mouse model that mimics many of the clinical features of dry AMD, including elevated levels of oxidative stress markers, damaged mitochondria, accumulating lysosomal lipofuscin and extracellular drusen-like structures in retinal pigment epithelial cells (RPE). In addition, a human RPE cell-based model was established to examine the impact of non-functional intracellular clearance systems on inflammasome activation. In this study, we found that there was a disturbance in the autolysosomal machinery responsible for clearing mitochondria in the RPE cells of one-year-old PGC1α/NFE2L2-deficient mice. The confocal immunohistochemical analysis revealed an increase in autophagosome marker microtubule-associated proteins 1A/1B light chain 3B (LC3B) as well as multiple mitophagy markers such as PTE-induced putative kinase 1 (PINK1) and E3 ubiquitin ligase (PARKIN), along with signs of damaged mitochondria. However, no increase in autolysosome formation was detected, nor was there a colocalization of the lysosomal marker LAMP2 or the mitochondrial marker, ATP synthase β. There was an upregulation of late autolysosomal fusion Ras-related protein (Rab7) in the perinuclear space of RPE cells, together with autofluorescent aggregates. Additionally, we observed an increase in the numbers of Toll-like receptors 3 and 9, while those of NOD-like receptor 3 were decreased in PGC1α/NFE2L2 dKO retinal specimens compared to wild-type animals. There was a trend towards increased complement component C5a and increased involvement of the serine protease enzyme, thrombin, in enhancing the terminal pathway producing C5a, independent of C3. The levels of primary acute phase C-reactive protein and receptor for advanced glycation end products were also increased in the PGC1α/NFE2L2 dKO retina. Furthermore, selective proteasome inhibition with epoxomicin promoted both nicotinamide adenine dinucleotide phosphate (NADPH) oxidase and mitochondrial-mediated oxidative stress, leading to the release of mitochondrial DNA to the cytosol, resulting in potassium efflux-dependent activation of the absent in melanoma 2 (AIM2) inflammasome and the subsequent secretion of interleukin-1β in ARPE-19 cells. In conclusion, the data suggest that there is at least a relative decrease in mitophagy, increases in the amounts of C5 and thrombin and decreased C3 levels in this dry AMD-like model. Moreover, selective proteasome inhibition evoked mitochondrial damage and AIM2 inflammasome activation in ARPE-19 cells.
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Affiliation(s)
- Iswariyaraja Sridevi Gurubaran
- Department of Medicine, Clinical Medicine Unit, University of Eastern Finland Institute of Clinical Medicine, Kuopio, Northern Savonia, Finland
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Liu Y, Zhang H, Li Y, Zha H, Gao Y, Chen H, Wang Y, Zhou T, Deng C. Dictyophora indusiata polysaccharide mediates priming of the NLRP3 inflammasome activation via TLR4/ NF-κB signaling pathway to exert immunostimulatory effects. J Appl Biomed 2024; 22:23-32. [PMID: 38505967 DOI: 10.32725/jab.2024.005] [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: 10/09/2023] [Accepted: 03/13/2024] [Indexed: 03/21/2024] Open
Abstract
Dictyophora indusiata, commonly known as bamboo fungus, is a type of edible mushroom that is highly popular worldwide for its rich flavor and nutritional value. It is also recognized for its pharmaceutical efficacy, with medicinal benefits attributed to its consumption. One of the most important components of Dictyophora indusiata is polysaccharide, which has been acknowledged as a promising regulator of biological response due to its immunostimulatory and anti-inflammatory properties. However, the specific roles of polysaccharide in modulating the NOD-like receptor protein 3 (NLRP3) inflammasome activation within macrophages remain relatively under-researched. To investigate this further, the mechanism by which Dictyophora indusiata polysaccharide (DIP) exerts its immunostimulatory activity in RAW 264.7 macrophages was analyzed. Results indicated that DIP has the potential to facilitate the priming of NLRP3 inflammasome activation by enhancing TLR4 expression, phosphorylation of IκB-α, and nuclear translocation of NF-κB p65 subunit. It was noted that DIP was unable to mediate the second step of NLRP3 inflammasome activation. The findings of this study provide compelling evidence that DIP has immunomodulatory effects by modulating the NLRP3 inflammasome in RAW264.7 macrophages.
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Affiliation(s)
- Youyi Liu
- Jiangnan University, Wuxi School of Medicine, Wuxi, Jiangsu 214122, P.R. China
| | - Huanxiao Zhang
- Jiangnan University, Wuxi School of Medicine, Wuxi, Jiangsu 214122, P.R. China
| | - Yuxuan Li
- Jiangnan University, Wuxi School of Medicine, Wuxi, Jiangsu 214122, P.R. China
| | - Hanqian Zha
- Jiangnan University, Wuxi School of Medicine, Wuxi, Jiangsu 214122, P.R. China
| | - Yujie Gao
- Jiangnan University, Wuxi School of Medicine, Wuxi, Jiangsu 214122, P.R. China
| | - Hui Chen
- Yixing Hospital of Traditional Chinese Medicine, Wuxi, Jiangsu 214200, P.R. China
| | - Yalin Wang
- Jiangnan University, Wuxi School of Medicine, Wuxi, Jiangsu 214122, P.R. China
| | - Tongxin Zhou
- Yixing Hospital of Traditional Chinese Medicine, Wuxi, Jiangsu 214200, P.R. China
| | - Chao Deng
- Jiangnan University, Wuxi School of Medicine, Wuxi, Jiangsu 214122, P.R. China
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Wang X, Wang Z, He J. Similarities and Differences of Vascular Calcification in Diabetes and Chronic Kidney Disease. Diabetes Metab Syndr Obes 2024; 17:165-192. [PMID: 38222032 PMCID: PMC10788067 DOI: 10.2147/dmso.s438618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Accepted: 12/21/2023] [Indexed: 01/16/2024] Open
Abstract
Presently, the mechanism of occurrence and development of vascular calcification (VC) is not fully understood; a range of evidence suggests a positive association between diabetes mellitus (DM) and VC. Furthermore, the increasing burden of central vascular disease in patients with chronic kidney disease (CKD) may be due, at least in part, to VC. In this review, we will review recent advances in the mechanisms of VC in the context of CKD and diabetes. The study further unveiled that VC is induced through the stimulation of pro-inflammatory factors, which in turn impairs endothelial function and triggers similar mechanisms in both disease contexts. Notably, hyperglycemia was identified as the distinctive mechanism driving calcification in DM. Conversely, in CKD, calcification is facilitated by mechanisms including mineral metabolism imbalance and the presence of uremic toxins. Additionally, we underscore the significance of investigating vascular alterations and newly identified molecular pathways as potential avenues for therapeutic intervention.
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Affiliation(s)
- Xiabo Wang
- Department of Cardiology, Affiliated Hospital of Jiangsu University, Zhenjiang, 212001, People’s Republic of China
| | - Zhongqun Wang
- Department of Cardiology, Affiliated Hospital of Jiangsu University, Zhenjiang, 212001, People’s Republic of China
| | - Jianqiang He
- Department of Nephrology, Affiliated Hospital of Jiangsu University, Zhenjiang, 212001, People’s Republic of China
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9
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Yang M, Zhang C. The role of innate immunity in diabetic nephropathy and their therapeutic consequences. J Pharm Anal 2024; 14:39-51. [PMID: 38352948 PMCID: PMC10859537 DOI: 10.1016/j.jpha.2023.09.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Revised: 07/12/2023] [Accepted: 09/05/2023] [Indexed: 02/16/2024] Open
Abstract
Diabetic nephropathy (DN) is an enduring condition that leads to inflammation and affects a substantial number of individuals with diabetes worldwide. A gradual reduction in glomerular filtration and emergence of proteins in the urine are typical aspects of DN, ultimately resulting in renal failure. Mounting evidence suggests that immunological and inflammatory factors are crucial for the development of DN. Therefore, the activation of innate immunity by resident renal and immune cells is critical for initiating and perpetuating inflammation. Toll-like receptors (TLRs) are an important group of receptors that identify patterns and activate immune responses and inflammation. Meanwhile, inflammatory responses in the liver, pancreatic islets, and kidneys involve inflammasomes and chemokines that generate pro-inflammatory cytokines. Moreover, the activation of the complement cascade can be triggered by glycated proteins. This review highlights recent findings elucidating how the innate immune system contributes to tissue fibrosis and organ dysfunction, ultimately leading to renal failure. This review also discusses innovative approaches that can be utilized to modulate the innate immune responses in DN for therapeutic purposes.
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Affiliation(s)
- Min Yang
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Chun Zhang
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
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10
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Lou S, Wu M, Cui S. Targeting NLRP3 Inflammasome: Structure, Function, and Inhibitors. Curr Med Chem 2024; 31:2021-2051. [PMID: 38310392 DOI: 10.2174/0109298673289984231127062528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Revised: 11/16/2023] [Accepted: 11/23/2023] [Indexed: 02/05/2024]
Abstract
Inflammasomes are multimeric protein complexes that can detect various physiological stimuli and danger signals. As a result, they perform a crucial function in the innate immune response. The NLRP3 inflammasome, as a vital constituent of the inflammasome family, is significant in defending against pathogen invasion and preserving cellhomeostasis. NLRP3 inflammasome dysregulation is connected to various pathological conditions, including inflammatory diseases, cancer, and cardiovascular and neurodegenerative diseases. This profile makes NLRP3 an applicable target for treating related diseases, and therefore, there are rising NLRP3 inhibitors disclosed for therapy. Herein, we summarized the updated advances in the structure, function, and inhibitors of NLRP3 inflammasome. Moreover, we aimed to provide an overview of the existing products and future directions for drug research and development.
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Affiliation(s)
- Shengying Lou
- Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
- Department of Pharmacy, The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, China
| | - Miaolian Wu
- Department of Pharmacy, The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, China
| | - Sunliang Cui
- Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
- Jinhua Institute of Zhejiang University, Jinhua, China
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11
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Zhang Y, Gao Y, Ding Y, Jiang Y, Chen H, Zhan Z, Liu X. Targeting KAT2A inhibits inflammatory macrophage activation and rheumatoid arthritis through epigenetic and metabolic reprogramming. MedComm (Beijing) 2023; 4:e306. [PMID: 37313329 PMCID: PMC10258526 DOI: 10.1002/mco2.306] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Revised: 05/09/2023] [Accepted: 05/11/2023] [Indexed: 06/15/2023] Open
Abstract
Epigenetic regulation of inflammatory macrophages governs inflammation initiation and resolution in the pathogenesis of rheumatoid arthritis (RA). Nevertheless, the mechanisms underlying macrophage-mediated arthritis injuries remain largely obscure. Here, we found that increased expression of lysine acetyltransferase 2A (KAT2A) in synovial tissues was closely correlated with inflammatory joint immunopathology in both RA patients and experimental arthritis mice. Administration of MB-3, the KAT2A-specific chemical inhibitor, significantly ameliorated the synovitis and bone destruction in collagen-induced arthritis model. Both pharmacological inhibition and siRNA silencing of KAT2A, not only suppressed innate stimuli-triggered proinflammatory gene (such as Il1b and Nlrp3) transcription but also impaired NLR family pyrin domain containing 3 (NLRP3) inflammasome activation in vivo and in vitro. Mechanistically, KAT2A facilitated macrophage glycolysis reprogramming through suppressing nuclear factor-erythroid 2-related factor 2 (NRF2) activity as well as downstream antioxidant molecules, which supported histone 3 lysine 9 acetylation (H3K9ac) and limited NRF2-mediated transcriptional repression of proinflammatory genes. Our study proves that acetyltransferase KAT2A licenses metabolic and epigenetic reprogramming for NLRP3 inflammasome activation in inflammatory macrophages, thereby targeting KAT2A represents a potential therapeutic approach for patients suffering from RA and relevant inflammatory diseases.
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Affiliation(s)
- Yunkai Zhang
- Department of Pathogen BiologyNaval Medical UniversityShanghaiChina
- National Key Laboratory of Immunity & InflammationNaval Medical UniversityShanghaiChina
| | - Ying Gao
- Department of RheumatologyChanghai Hospital, Naval Medical UniversityShanghaiChina
- Key Laboratory of Arrhythmias of the Ministry of Education of ChinaShanghai East Hospital, Tongji University School of MedicineShanghaiChina
| | - Yingying Ding
- Department of Pathogen BiologyNaval Medical UniversityShanghaiChina
| | - Yuyu Jiang
- Department of Pathogen BiologyNaval Medical UniversityShanghaiChina
| | - Huiying Chen
- Department of Pathogen BiologyNaval Medical UniversityShanghaiChina
| | - Zhenzhen Zhan
- Key Laboratory of Arrhythmias of the Ministry of Education of ChinaShanghai East Hospital, Tongji University School of MedicineShanghaiChina
- Department of Liver Surgery, Shanghai Institute of TransplantationRenji Hospital, Shanghai Jiao Tong University School of MedicineShanghaiChina
| | - Xingguang Liu
- Department of Pathogen BiologyNaval Medical UniversityShanghaiChina
- National Key Laboratory of Immunity & InflammationNaval Medical UniversityShanghaiChina
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12
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Wang J, Yuan B, Yin R, Zhang H. Inflammation Responses to Bone Scaffolds under Mechanical Stimuli in Bone Regeneration. J Funct Biomater 2023; 14:jfb14030169. [PMID: 36976093 PMCID: PMC10059255 DOI: 10.3390/jfb14030169] [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: 02/05/2023] [Revised: 03/05/2023] [Accepted: 03/18/2023] [Indexed: 03/29/2023] Open
Abstract
Physical stimuli play an important role in one tissue engineering. Mechanical stimuli, such as ultrasound with cyclic loading, are widely used to promote bone osteogenesis; however, the inflammatory response under physical stimuli has not been well studied. In this paper, the signaling pathways related to inflammatory responses in bone tissue engineering are evaluated, and the application of physical stimulation to promote osteogenesis and its related mechanisms are reviewed in detail; in particular, how physical stimulation alleviates inflammatory responses during transplantation when employing a bone scaffolding strategy is discussed. It is concluded that physical stimulation (e.g., ultrasound and cyclic stress) helps to promote osteogenesis while reducing the inflammatory response. In addition, apart from 2D cell culture, more consideration should be given to the mechanical stimuli applied to 3D scaffolds and the effects of different force moduli while evaluating inflammatory responses. This will facilitate the application of physiotherapy in bone tissue engineering.
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Affiliation(s)
- Junjie Wang
- School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Bo Yuan
- Spine Center, Department of Orthopaedics, Shanghai Changzheng Hospital, Second Affiliated Hospital of Naval Medical University, Shanghai 200003, China
| | - Ruixue Yin
- School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Hongbo Zhang
- School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, China
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13
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Razumova IY, Surnina ZV, Dzhaber DN. [Current view on the pathogenesis of immune-mediated inflammatory diseases associated with ocular manifestations]. Vestn Oftalmol 2023; 139:68-75. [PMID: 37067934 DOI: 10.17116/oftalma202313902168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/18/2023]
Abstract
This literature review discusses the new concept of pathogenesis of systemic immune-mediated inflammatory diseases (IMIDs), presents their classification and analyzes their association with ocular manifestations.
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Affiliation(s)
- I Yu Razumova
- Krasnov Research Institute of Eye Diseases, Moscow, Russia
| | - Z V Surnina
- Krasnov Research Institute of Eye Diseases, Moscow, Russia
| | - D N Dzhaber
- Scientific and Practical Sight Recovery Center, Moscow, Russia
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14
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Baik JS, Seo YN, Lee YC, Yi JM, Rhee MH, Park MT, Kim SD. Involvement of the p38 MAPK-NLRC4-Caspase-1 Pathway in Ionizing Radiation-Enhanced Macrophage IL-1β Production. Int J Mol Sci 2022; 23:ijms232213757. [PMID: 36430236 PMCID: PMC9698243 DOI: 10.3390/ijms232213757] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 11/01/2022] [Accepted: 11/02/2022] [Indexed: 11/10/2022] Open
Abstract
Macrophages are abundant immune cells in the tumor microenvironment and are crucial in regulating tumor malignancy. We previously reported that ionizing radiation (IR) increases the production of interleukin (IL)-1β in lipopolysaccharide (LPS)-treated macrophages, contributing to the malignancy of colorectal cancer cells; however, the mechanism remained unclear. Here, we show that IR increases the activity of cysteine-aspartate-specific protease 1 (caspase-1), which is regulated by the inflammasome, and cleaves premature IL-1β to mature IL-1β in RAW264.7 macrophages. Irradiated RAW264.7 cells showed increased expression of NLRC4 inflammasome, which controls the activity of caspase-1 and IL-1β production. Silencing of NLRC4 using RNA interference inhibited the IR-induced increase in IL-1β production. Activation of the inflammasome can be regulated by mitogen-activated protein kinase (MAPK)s in macrophages. In RAW264.7 cells, IR increased the phosphorylation of p38 MAPK but not extracellular signal-regulated kinase and c-Jun N-terminal kinase. Moreover, a selective inhibitor of p38 MAPK inhibited LPS-induced IL-1β production and NLRC4 inflammasome expression in irradiated RAW264.7 macrophages. Our results indicate that IR-induced activation of the p38 MAPK-NLRC4-caspase-1 activation pathway in macrophages increases IL-1β production in response to LPS.
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Affiliation(s)
- Ji Sue Baik
- Research Center, Dongnam Institute of Radiological & Medical Sciences, Busan 46033, Korea
- Department of Medicinal Biotechnology, College of Health Sciences, Dong-A University, Busan 49315, Korea
| | - You Na Seo
- Research Center, Dongnam Institute of Radiological & Medical Sciences, Busan 46033, Korea
- Department of Microbiology and Immunology, College of Medicine, Inge University, Busan 47392, Korea
| | - Young-Choon Lee
- Department of Medicinal Biotechnology, College of Health Sciences, Dong-A University, Busan 49315, Korea
| | - Joo Mi Yi
- Department of Microbiology and Immunology, College of Medicine, Inge University, Busan 47392, Korea
| | - Man Hee Rhee
- Department of Veterinary Medicine, College of Veterinary Medicine, Kyoung Pook National University, Daegu 41566, Korea
| | - Moon-Taek Park
- Research Center, Dongnam Institute of Radiological & Medical Sciences, Busan 46033, Korea
- Correspondence: (M.-T.P.); (S.D.K.); Tel.: +82-51-720-5141 (M.-T.P.); +82-53-950-5958 (S.D.K.)
| | - Sung Dae Kim
- Department of Veterinary Medicine, College of Veterinary Medicine, Kyoung Pook National University, Daegu 41566, Korea
- Correspondence: (M.-T.P.); (S.D.K.); Tel.: +82-51-720-5141 (M.-T.P.); +82-53-950-5958 (S.D.K.)
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15
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Trimarchi M, Lauritano D, Ronconi G, Caraffa A, Gallenga CE, Frydas I, Kritas SK, Calvisi V, Conti P. Mast Cell Cytokines in Acute and Chronic Gingival Tissue Inflammation: Role of IL-33 and IL-37. Int J Mol Sci 2022; 23:13242. [PMID: 36362030 PMCID: PMC9654575 DOI: 10.3390/ijms232113242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 09/27/2022] [Accepted: 10/14/2022] [Indexed: 11/06/2022] Open
Abstract
Much evidence suggests autoimmunity in the etiopathogenesis of periodontal disease. In fact, in periodontitis, there is antibody production against collagen, DNA, and IgG, as well as increased IgA expression, T cell dysfunction, high expression of class II MHC molecules on the surface of gingival epithelial cells in inflamed tissues, activation of NK cells, and the generation of antibodies against the azurophil granules of polymorphonuclear leukocytes. In general, direct activation of autoreactive immune cells and production of TNF can activate neutrophils to release pro-inflammatory enzymes with tissue damage in the gingiva. Gingival inflammation and, in the most serious cases, periodontitis, are mainly due to the dysbiosis of the commensal oral microbiota that triggers the immune system. This inflammatory pathological state can affect the periodontal ligament, bone, and the entire gingival tissue. Oral tolerance can be abrogated by some cytokines produced by epithelial cells and activated immune cells, including mast cells (MCs). Periodontal cells and inflammatory-immune cells, including mast cells (MCs), produce cytokines and chemokines, mediating local inflammation of the gingival, along with destruction of the periodontal ligament and alveolar bone. Immune-cell activation and recruitment can be induced by inflammatory cytokines, such as IL-1, TNF, IL-33, and bacterial products, including lipopolysaccharide (LPS). IL-1 and IL-33 are pleiotropic cytokines from members of the IL-1 family, which mediate inflammation of MCs and contribute to many key features of periodontitis and other inflammatory disorders. IL-33 activates several immune cells, including lymphocytes, Th2 cells, and MCs in both innate and acquired immunological diseases. The classic therapies for periodontitis include non-surgical periodontal treatment, surgery, antibiotics, anti-inflammatory drugs, and surgery, which have been only partially effective. Recently, a natural cytokine, IL-37, a member of the IL-1 family and a suppressor of IL-1b, has received considerable attention for the treatment of inflammatory diseases. In this article, we report that IL-37 may be an important and effective therapeutic cytokine that may inhibit periodontal inflammation. The purpose of this paper is to study the relationship between MCs, IL-1, IL-33, and IL-37 inhibition in acute and chronic inflamed gingival tissue.
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Affiliation(s)
- Matteo Trimarchi
- Centre of Neuroscience of Milan, Department of Medicine and Surgery, University of Milan, 20122 Milano, Italy;
| | - Dorina Lauritano
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy;
| | - Gianpaolo Ronconi
- Clinica dei Pazienti del Territorio, Fondazione Policlinico Gemelli, 00185 Rome, Italy;
| | | | - Carla E. Gallenga
- Section of Ophthalmology, Department of Biomedical Sciences and Specialist Surgery, University of Ferrara, 44121 Ferrara, Italy;
| | - Ilias Frydas
- Department of Parasitology, Aristotle University, 54124 Thessaloniki, Greece;
| | - Spyros K. Kritas
- Department of Microbiology and Infectious Diseases, School of Veterinary Medicine, Aristotle University of Thessaloniki, 54124 Macedonia, Greece;
| | - Vittorio Calvisi
- Orthopaedics Department, University of L’Aquila, 67100 L’Aquila, Italy;
| | - Pio Conti
- Immunology Division, Postgraduate Medical School, University of Chieti, 65100 Pescara, Italy
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16
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Cao Z, Yang F, Lin Y, Shan J, Cao H, Zhang C, Zhuang Y, Xing C, Hu G. Selenium Antagonizes Cadmium-Induced Inflammation and Oxidative Stress via Suppressing the Interplay between NLRP3 Inflammasome and HMGB1/NF-κB Pathway in Duck Hepatocytes. Int J Mol Sci 2022; 23:ijms23116252. [PMID: 35682929 PMCID: PMC9181349 DOI: 10.3390/ijms23116252] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Revised: 05/29/2022] [Accepted: 05/31/2022] [Indexed: 12/14/2022] Open
Abstract
Cadmium (Cd) is a toxic heavy metal that can accumulate in the liver of animals, damaging liver function. Inflammation and oxidative stress are considered primary causes of Cd-induced liver damage. Selenium (Se) is an antioxidant and can resist the detrimental impacts of Cd on the liver. To elucidate the antagonism of Se on Cd against hepatocyte injury and its mechanism, duck embryo hepatocytes were treated with Cd (4 μM) and/or Se (0.4 μM) for 24 h. Then, the hepatocyte viability, oxidative stress and inflammatory status were assessed. The findings manifested that the accumulation of reactive oxygen species (ROS) and the levels of pro-inflammatory factors were elevated in the Cd group. Simultaneously, immunofluorescence staining revealed that the interaction between NOD-like receptor pyran domain containing 3 (NLRP3) and apoptosis-associated speck-like protein (ASC) was enhanced, the movement of high-mobility group box 1 (HMGB1) from nucleus to cytoplasm was increased and the inflammatory response was further amplified. Nevertheless, the addition of Se relieved the above-mentioned effects, thereby alleviating cellular oxidative stress and inflammation. Collectively, the results suggested that Se could mitigate Cd-stimulated oxidative stress and inflammation in hepatocytes, which might be correlated with the NLRP3 inflammasome and HMGB1/nuclear factor-κB (NF-κB) signaling pathway.
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Affiliation(s)
| | | | | | | | | | | | | | - Chenghong Xing
- Correspondence: (C.X.); (G.H.); Tel.: +86-18770046182 (C.X.); +86-13807089905 (G.H.)
| | - Guoliang Hu
- Correspondence: (C.X.); (G.H.); Tel.: +86-18770046182 (C.X.); +86-13807089905 (G.H.)
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17
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PINK1/Parkin-mediated mitophagy as a protective mechanism against AFB 1-induced liver injury in mice. Food Chem Toxicol 2022; 164:113043. [PMID: 35447291 DOI: 10.1016/j.fct.2022.113043] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Revised: 03/19/2022] [Accepted: 04/14/2022] [Indexed: 11/22/2022]
Abstract
Aflatoxin B1 (AFB1) can cause oxidative stress leading to mitochondrial damage and subsequent liver injury. Although it is well-known that damaged mitochondria are eliminated by PINK1/Parkin-mediated mitophagy, this mechanism has not yet been characterized in the context of AFB1-induced liver injury. In this study, male wild-type C57BL/6N mice were divided into groups 1-4, which were then orally administered 0, 0.5, 0.75, and 1 mg/kg body weight AFB1 for 28 d, respectively. Our results demonstrated that oxidative stress, NLRP3-inflammasome activation, and mitochondrial damage were dose-dependently augmented in AFB1-induced liver injury. Additionally, PINK1/Parkin-mediated mitophagy peaked in the groups that had received a mid-dose of AFB1 (0.75 mg/kg), which was attenuated slightly in high-dose groups. Afterward, we further characterized AFB1-induced liver injury by comparing wild-type C57BL/6N mice with Parkin knockout (Parkin-/-) mice. We found that the restricted mitophagy in Parkin-/- mice was associated with increased oxidative stress, NLRP3-inflammasome activation, mitochondrial damage, and liver injury. Taken together, these results indicate that PINK1/Parkin-mediated mitophagy plays an important role in attenuating AFB1-induced liver injury in mice.
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18
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HMGB1 Inhibition to Ameliorate Organ Failure and Increase Survival in Trauma. Biomolecules 2022; 12:biom12010101. [PMID: 35053249 PMCID: PMC8773879 DOI: 10.3390/biom12010101] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 01/03/2022] [Accepted: 01/06/2022] [Indexed: 12/15/2022] Open
Abstract
Several preclinical and clinical reports have demonstrated that levels of circulating high mobility group box 1 protein (HMGB1) are increased early after trauma and are associated with systemic inflammation and clinical outcomes. However, the mechanisms of the interaction between HMGB1 and inflammatory mediators that lead to the development of remote organ damage after trauma remain obscure. HMGB1 and inflammatory mediators were analyzed in plasma from 54 combat casualties, collected on admission to a military hospital in Iraq, and at 8 and 24 h after admission. In total, 45 (83%) of these patients had traumatic brain injury (TBI). Nine healthy volunteers were enrolled as controls. HMGB1 plasma levels were significantly increased in the first 8 h after admission, and were found to be associated with systemic inflammatory responses, injury severity score, and presence of TBI. These data provided the rationale for designing experiments in rats subjected to blast injury and hemorrhage, to explore the effect of HMGB1 inhibition by CX-01 (2-O, 3-O desulfated heparin). Animals were cannulated, then recovered for 5–7 days before blast injury in a shock tube and volume-controlled hemorrhage. Blast injury and hemorrhage induced an early increase in HMGB1 plasma levels along with severe tissue damage and high mortality. CX-01 inhibited systemic HMGB1 activity, decreased local and systemic inflammatory responses, significantly reduced tissue and organ damage, and tended to increase survival. These data suggest that CX-01 has potential as an adjuvant treatment for traumatic hemorrhage.
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Cai B, Zhao J, Zhang Y, Liu Y, Ma C, Yi F, Zheng Y, Zhang L, Chen T, Liu H, Liu B, Gao C. USP5 attenuates NLRP3 inflammasome activation by promoting autophagic degradation of NLRP3. Autophagy 2021; 18:990-1004. [PMID: 34486483 DOI: 10.1080/15548627.2021.1965426] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
ABBREVIATIONS 3-MA: 3-methyladenine; AIM2: absent in melanoma 2; ATG5: autophagy related 5; BafA1: bafilomycin A1; CASP1: caspase 1; CHX: cycloheximide; Co-IP: co-immunoprecipitation; CQ: chloroquine; DUBs: deubiquitinases; IL1B/IL-1β: interleukin 1 beta; LAMP1: lysosomal associated membrane protein 1; LPS: lipopolysaccharide; MARCHF7/MARCH7: membrane associated RING-CH-type finger 7; NFKB/NF-κB: nuclear factor kappa B; Nig.: nigericin; NLRC4: NLR family CARD domain containing 4; NLRP3: NLR family pyrin domain containing 3; PECs: peritoneal exudate cells; PMN: polymorphonuclear; PMs: peritoneal macrophages; PYCARD/ASC: PYD and CARD domain containing; TLRs: toll like receptors; TNF/TNF-α: tumor necrosis factor; Ub: ubiquitin; USP5: ubiquitin specific peptidase 5; WT: wild type.
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Affiliation(s)
- Baoshan Cai
- Key Laboratory of Infection and Immunity of Shandong Province & Department of Immunology, School of Biomedical Sciences, Shandong University, Jinan, China
| | - Jian Zhao
- Key Laboratory of Infection and Immunity of Shandong Province & Department of Immunology, School of Biomedical Sciences, Shandong University, Jinan, China
| | - Yuling Zhang
- Key Laboratory of Infection and Immunity of Shandong Province & Department of Immunology, School of Biomedical Sciences, Shandong University, Jinan, China
| | - Yaxing Liu
- Key Laboratory of Infection and Immunity of Shandong Province & Department of Immunology, School of Biomedical Sciences, Shandong University, Jinan, China
| | - Chunhong Ma
- Key Laboratory of Infection and Immunity of Shandong Province & Department of Immunology, School of Biomedical Sciences, Shandong University, Jinan, China
| | - Fan Yi
- Department of Pharmacology, School of Biomedical Sciences, Shandong University, Jinan, China
| | - Yi Zheng
- Key Laboratory of Infection and Immunity of Shandong Province & Department of Immunology, School of Biomedical Sciences, Shandong University, Jinan, China
| | - Lei Zhang
- Key Laboratory of Infection and Immunity of Shandong Province & Department of Immunology, School of Biomedical Sciences, Shandong University, Jinan, China
| | - Tian Chen
- Department of Pathogenic Biology, School of Biomedical Sciences, Shandong University, Jinan, China
| | - Huiqing Liu
- Department of Pharmacology, School of Biomedical Sciences, Shandong University, Jinan, China
| | - Bingyu Liu
- Key Laboratory of Infection and Immunity of Shandong Province & Department of Immunology, School of Biomedical Sciences, Shandong University, Jinan, China
| | - Chengjiang Gao
- Key Laboratory of Infection and Immunity of Shandong Province & Department of Immunology, School of Biomedical Sciences, Shandong University, Jinan, China
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20
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Li D, Xie L, Qiao Z, Mai S, Zhu J, Zhang F, Chen S, Li L, Shen F, Qin Y, Yao H, He S, Ma F. STING-mediated degradation of IFI16 negatively regulates apoptosis by inhibiting p53 phosphorylation at serine 392. J Biol Chem 2021; 297:100930. [PMID: 34216619 PMCID: PMC8326736 DOI: 10.1016/j.jbc.2021.100930] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 06/17/2021] [Accepted: 06/29/2021] [Indexed: 12/12/2022] Open
Abstract
Interferon-γ-inducible factor 16 (IFI16) triggers stimulator of interferon (IFN) genes (STING)-dependent type I IFN production during host antiviral immunity and facilitates p53-dependent apoptosis during suppressing tumorigenesis. We have previously reported that STING-mediated IFI16 degradation negatively regulates type I IFN production. However, it is unknown whether STING also suppresses IFI16/p53-dependent apoptosis via degradation of IFI16. Here, our results from flow cytometry apoptosis detection and immunoblot assays show that IFI16 and nutlin-3, a p53 pathway activator, synergistically induce apoptosis in U2OS and A549 cells. Protein kinase R-triggered phosphorylation of p53 at serine 392 is critical for the IFI16-p53-dependent apoptosis. However, overexpression of STING suppresses p53 serine 392 phosphorylation, p53 transcriptional activity, expression of p53 target genes, and p53-dependent mitochondrial depolarization and apoptosis. In summary, our current study demonstrates that STING-mediated IFI16 degradation negatively regulates IFI16-mediated p53-dependent apoptosis in osteosarcoma and non-small cell lung cancer cells, which suggests a protumorigenic role for STING in certain cancer types because of its potent ability to degrade upstream IFI16.
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Affiliation(s)
- Dapei Li
- Center for Systems Medicine, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China; Suzhou Institute of Systems Medicine, Suzhou, China.
| | - Lifen Xie
- Center for Systems Medicine, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China; Suzhou Institute of Systems Medicine, Suzhou, China
| | - Zigang Qiao
- Center for Systems Medicine, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China; Suzhou Institute of Systems Medicine, Suzhou, China
| | - Sanyue Mai
- Department of Laboratory Medicine, 988 Central Hospital of People's Liberation Army, Zhengzhou, China
| | - Jingfei Zhu
- Center for Systems Medicine, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China; Suzhou Institute of Systems Medicine, Suzhou, China
| | - Fan Zhang
- Center for Systems Medicine, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China; Suzhou Institute of Systems Medicine, Suzhou, China
| | - Shengchuan Chen
- Suzhou Institute of Systems Medicine, Suzhou, China; Department of Hepatopancreatobiliary Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Liang Li
- Center for Systems Medicine, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China; Suzhou Institute of Systems Medicine, Suzhou, China; Department of Hepatopancreatobiliary Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Fangrong Shen
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Yanghua Qin
- Department of Laboratory Diagnosis, Changhai Hospital of the Second Military Medical University, Shanghai, China
| | - Haiping Yao
- Center for Systems Medicine, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China; Suzhou Institute of Systems Medicine, Suzhou, China
| | - Sudan He
- Center for Systems Medicine, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China; Suzhou Institute of Systems Medicine, Suzhou, China
| | - Feng Ma
- Center for Systems Medicine, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China; Suzhou Institute of Systems Medicine, Suzhou, China; Department of Hepatopancreatobiliary Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.
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21
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The N-Formyl Peptide Receptor 2 (FPR2) Agonist MR-39 Exhibits Anti-Inflammatory Activity in LPS-Stimulated Organotypic Hippocampal Cultures. Cells 2021; 10:cells10061524. [PMID: 34204273 PMCID: PMC8235773 DOI: 10.3390/cells10061524] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 06/11/2021] [Accepted: 06/15/2021] [Indexed: 01/25/2023] Open
Abstract
Accumulating evidence indicates a pivotal role for chronic inflammatory processes in the pathogenesis of neurodegenerative and psychiatric disorders. G protein-coupled formyl peptide receptor 2 (FPR2) mediates pro-inflammatory or anti-/pro-resolving effects upon stimulation with biased agonists. We aimed to evaluate the effects of a new FPR2 ureidopropanamide agonist, compound MR-39, on neuroinflammatory processes in organotypic hippocampal cultures (OHCs) derived from control (WT) and knockout FPR2−/− mice (KO) exposed to bacterial endotoxin (lipopolysaccharide; LPS). Higher LPS-induced cytokine expression and basal release were observed in KO FPR2 cultures than in WT cultures, suggesting that a lack of FPR2 enhances the OHCs response to inflammatory stimuli. Pretreatment with MR-39 abolished some of the LPS-induced changes in the expression of genes related to the M1/M2 phenotypes (including Il-1β, Il-6, Arg1, Il-4, Cd74, Fizz and Cx3cr1) and TNF-α, IL-1β and IL-4 release in tissue derived from WT but not KO mice. Receptor specificity was confirmed by adding the FPR2 antagonist WRW4, which abolished the abovementioned effects of MR-39. Further biochemical data showed an increase in the phospho-p65/total p65 ratio after LPS stimulation in hippocampal tissues from both WT and KO mice, and MR-39 only reversed this effect on WT OHCs. LPS also increased TRAF6 levels, which are critical for the TLR4-mediated NF-κB pro-inflammatory responses. MR-39 attenuated the LPS-evoked increase in the levels of the NLRP3 and caspase-1 proteins in WT but not KO hippocampal cultures. Since NLRP3 may be involved in the pyroptosis, a lytic type of programmed cell death in which the main role is played by Gasdermin D (GSDMD), we examined the effects of LPS and/or MR-39 on the GSDMD protein level. LPS only increased GSDMD production in the WT tissues, and this effect was ameliorated by MR-39. Collectively, this study indicates that the new FPR2 agonist efficiently abrogates LPS-induced neuroinflammation in an ex vivo model, as evidenced by a decrease in pro-inflammatory cytokine expression and release as well as the downregulation of NLRP3 inflammasome-related pathways.
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Jiang Y, Li L, Li Y, Liu G, Hoffman RM, Jia L. Neddylation Regulates Macrophages and Implications for Cancer Therapy. Front Cell Dev Biol 2021; 9:681186. [PMID: 34164400 PMCID: PMC8215544 DOI: 10.3389/fcell.2021.681186] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Accepted: 05/05/2021] [Indexed: 12/24/2022] Open
Abstract
Tumor-associated macrophages (TAMs) promote cancer progression via stimulating angiogenesis, invasion/metastasis, and suppressing anti-cancer immunity. Targeting TAMs is a potential promising cancer therapeutic strategy. Neddylation adds the ubiquitin-like protein NEDD8 to substrates, and thereby regulates diverse biological processes in multiple cell types, including macrophages. By controlling cellular responses, the neddylation pathway regulates the function, migration, survival, and polarization of macrophages. In the present review we summarized how the neddylation pathway modulates Macrophages and its implications for cancer therapy.
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Affiliation(s)
- Yanyu Jiang
- Longhua Hospital, Cancer Institute, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Lihui Li
- Longhua Hospital, Cancer Institute, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yan Li
- College of Life Sciences, Beijing Normal University, Beijing, China
| | - Guangwei Liu
- College of Life Sciences, Beijing Normal University, Beijing, China
| | - Robert M Hoffman
- Department of Surgery, University of California, San Diego, San Diego, CA, United States.,AntiCancer Inc., San Diego, CA, United States
| | - Lijun Jia
- Longhua Hospital, Cancer Institute, Shanghai University of Traditional Chinese Medicine, Shanghai, China
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Wei J, Wang X, Liu Q, Zhou N, Zhu S, Li Z, Li X, Yao J, Zhang L. The impact of polystyrene microplastics on cardiomyocytes pyroptosis through NLRP3/Caspase-1 signaling pathway and oxidative stress in Wistar rats. ENVIRONMENTAL TOXICOLOGY 2021; 36:935-944. [PMID: 33404188 DOI: 10.1002/tox.23095] [Citation(s) in RCA: 81] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 12/27/2020] [Indexed: 05/23/2023]
Abstract
The extensive existing of microplastics (MPs) in the ecosystem have increased considerable attention concerning their potential adverse effects, the toxicities and the underlying mechanism of MPs are still scarce. To explore the effect of MPs on cardiac tissue in Wistar rats and unravel the mechanism of pyroptosis and oxidative stress in the process of cardiomyocytes injury, 32 male Wister rats were divided into control group and three model groups, which were exposed to 0.5 mm PS MPs at 0.5, 5 and 50 mg/L for 90 days. Results revealed that MPs could damage cardiac structure and function with impaired mitochondria integrity, as well as increased levels of creatine kinase-MB and cardiac troponinI (cTnI). Moreover, MPs administration triggered oxidative stress as indicated by increased levels of malondialdehyde and decreased activity of superoxide dismutase, glutathione peroxidase and catalase. Treatment with MPs resulted in apoptosis and pyroptosis as evidenced by increasing expressions of interleukin (IL)-1β, IL-18. Additionally, MPs were shown to induce the NOD-like receptor protein 3 inflammasomes activation in cardiac tissue, enabling activation of Caspase-1-dependent signaling pathway induced by inflammatory stimuli resulting from oxidative stress. In summary, these results illustrated that pyroptosis played a vital role in polystyrene MPs-induced cardiotoxicity, which might be helpful to understand the mechanism of cardiac dysfunction and induced by MPs.
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Affiliation(s)
- Jialiu Wei
- Key Laboratory of Cardiovascular Epidemiology & Department of Epidemiology, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xifeng Wang
- Department of Critical Care Medicine, Yuhuangding Hospital, Qingdao University, Yantai, China
| | - Qian Liu
- College of Clinical Medicine, Binzhou Medical University, Yantai, China
| | - Na Zhou
- College of Clinical Medicine, Binzhou Medical University, Yantai, China
| | - Shuxiang Zhu
- College of Clinical Medicine, Binzhou Medical University, Yantai, China
| | - Zekang Li
- College of Clinical Medicine, Binzhou Medical University, Yantai, China
| | - Xiaoli Li
- Department of Critical Care Medicine, Yuhuangding Hospital, Qingdao University, Yantai, China
| | - Jinpeng Yao
- Department of Cardiology, Yantai Yeda Hospital, Yantai, China
| | - Lianshuang Zhang
- Department of Histology and Embryology, Binzhou Medical University, Yantai, China
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24
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Dong G, Wagner V, Minguez-Menendez A, Fernandez-Prada C, Olivier M. Extracellular vesicles and leishmaniasis: Current knowledge and promising avenues for future development. Mol Immunol 2021; 135:73-83. [PMID: 33873096 DOI: 10.1016/j.molimm.2021.04.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 03/23/2021] [Accepted: 04/01/2021] [Indexed: 02/09/2023]
Abstract
Extracellular vesicles (EVs) are small, membrane-bound "delivery trucks" that are present in the extracellular environment, including biological fluids. EVs are capable of inducing changes in the physiological status of neighboring cells through the transfer of key macromolecules, and are thought to play a role in a number of pathological processes. Leishmaniasis, caused by the protozoan parasite Leishmania, is an important example. The biology of Leishmania EVs has been studied in detail, and findings point to their role in exacerbation of disease and potential involvement in the perpetuation of drug resistance. Furthermore, the use of EVs for development of vaccines has been explored, as well as their potential use in a number of fields as biomarkers of disease and drug resistance. Here we discuss the latest findings on EVs, with a particular focus on Leishmania, as well as potential avenues for their future development and clinical applications.
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Affiliation(s)
- George Dong
- Infectious Diseases and Immunology in Global Health Program (IDIGH), The Research Institute of the McGill University Health Centre, Montréal, QC, Canada
| | - Victoria Wagner
- Department of Pathology and Microbiology, Faculty of Veterinary Medicine, Université de Montréal, QC, Canada; The Research Group on Infectious Diseases in Production Animals (GREMIP), Faculty of Veterinary Medicine, Université de Montréal, QC, Canada
| | | | - Christopher Fernandez-Prada
- Department of Pathology and Microbiology, Faculty of Veterinary Medicine, Université de Montréal, QC, Canada; The Research Group on Infectious Diseases in Production Animals (GREMIP), Faculty of Veterinary Medicine, Université de Montréal, QC, Canada.
| | - Martin Olivier
- Infectious Diseases and Immunology in Global Health Program (IDIGH), The Research Institute of the McGill University Health Centre, Montréal, QC, Canada; Departments of Medicine, Microbiology and Immunology, Faculty of Medicine, McGill University, Montréal, QC, Canada.
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25
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Ngou BPM, Ahn HK, Ding P, Jones JDG. Mutual potentiation of plant immunity by cell-surface and intracellular receptors. Nature 2021; 592:110-115. [PMID: 33692545 DOI: 10.1101/2020.04.10.034173] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Accepted: 02/01/2021] [Indexed: 05/25/2023]
Abstract
The plant immune system involves cell-surface receptors that detect intercellular pathogen-derived molecules, and intracellular receptors that activate immunity upon detection of pathogen-secreted effector proteins that act inside the plant cell. Immunity mediated by surface receptors has been extensively studied1, but that mediated by intracellular receptors has rarely been investigated in the absence of surface-receptor-mediated immunity. Furthermore, interactions between these two immune pathways are poorly understood. Here, by activating intracellular receptors without inducing surface-receptor-mediated immunity, we analyse interactions between these two distinct immune systems in Arabidopsis. Pathogen recognition by surface receptors activates multiple protein kinases and NADPH oxidases, and we find that intracellular receptors primarily potentiate the activation of these proteins by increasing their abundance through several mechanisms. Likewise, the hypersensitive response that depends on intracellular receptors is strongly enhanced by the activation of surface receptors. Activation of either immune system alone is insufficient to provide effective resistance against the bacterial pathogen Pseudomonas syringae. Thus, immune pathways activated by cell-surface and intracellular receptors in plants mutually potentiate to activate strong defences against pathogens. These findings reshape our understanding of plant immunity and have broad implications for crop improvement.
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Affiliation(s)
| | - Hee-Kyung Ahn
- The Sainsbury Laboratory, University of East Anglia, Norwich, UK
| | - Pingtao Ding
- The Sainsbury Laboratory, University of East Anglia, Norwich, UK.
- Institute of Biology Leiden, Leiden University, Leiden, The Netherlands.
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26
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Hua Z, Liu R, Chen Y, Liu G, Li C, Song Y, Cao Z, Li W, Li W, Lu C, Liu Y. Contamination of Aflatoxins Induces Severe Hepatotoxicity Through Multiple Mechanisms. Front Pharmacol 2021; 11:605823. [PMID: 33505311 PMCID: PMC7830880 DOI: 10.3389/fphar.2020.605823] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 11/20/2020] [Indexed: 12/15/2022] Open
Abstract
Aflatoxins (AFs) are commonly contaminating mycotoxins in foods and medicinal materials. Since they were first discovered to cause “turkey X” disease in the United Kingdom in the early 1960s, the extreme toxicity of AFs in the human liver received serious attention. The liver is the major target organ where AFs are metabolized and converted into extremely toxic forms to engender hepatotoxicity. AFs influence mitochondrial respiratory function and destroy normal mitochondrial structure. AFs initiate damage to mitochondria and subsequent oxidative stress. AFs block cellular survival pathways, such as autophagy that eliminates impaired cellular structures and the antioxidant system that copes with oxidative stress, which may underlie their high toxicities. AFs induce cell death via intrinsic and extrinsic apoptosis pathways and influence the cell cycle and growth via microribonucleic acids (miRNAs). Furthermore, AFs induce the hepatic local inflammatory microenvironment to exacerbate hepatotoxicity via upregulation of NF-κB signaling pathway and inflammasome assembly in the presence of Kupffer cells (liver innate immunocytes). This review addresses the mechanisms of AFs-induced hepatotoxicity from various aspects and provides background knowledge to better understand AFs-related hepatoxic diseases.
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Affiliation(s)
- Zhenglai Hua
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Rui Liu
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Youwen Chen
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Guangzhi Liu
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Chenxi Li
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Yurong Song
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Zhiwen Cao
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Wen Li
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Weifeng Li
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Cheng Lu
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing, China
| | - Yuanyan Liu
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
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Choo J, Heo G, Pothoulakis C, Im E. Posttranslational modifications as therapeutic targets for intestinal disorders. Pharmacol Res 2021; 165:105412. [PMID: 33412276 DOI: 10.1016/j.phrs.2020.105412] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 12/14/2020] [Accepted: 12/22/2020] [Indexed: 02/08/2023]
Abstract
A variety of biological processes are regulated by posttranslational modifications. Posttranslational modifications including phosphorylation, ubiquitination, glycosylation, and proteolytic cleavage, control diverse physiological functions in the gastrointestinal tract. Therefore, a better understanding of their implications in intestinal diseases, including inflammatory bowel disease, irritable bowel syndrome, celiac disease, and colorectal cancer would provide a basis for the identification of novel biomarkers as well as attractive therapeutic targets. Posttranslational modifications can be common denominators, as well as distinct biomarkers, characterizing pathological differences of various intestinal diseases. This review provides experimental evidence that identifies changes in posttranslational modifications from patient samples, primary cells, or cell lines in intestinal disorders, and a summary of carefully selected information on the use of pharmacological modulators of protein modifications as therapeutic options.
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Affiliation(s)
- Jieun Choo
- College of Pharmacy, Pusan National University, Busan, 46241, Republic of Korea
| | - Gwangbeom Heo
- College of Pharmacy, Pusan National University, Busan, 46241, Republic of Korea
| | - Charalabos Pothoulakis
- Section of Inflammatory Bowel Disease & Inflammatory Bowel Disease Center, Division of Digestive Diseases, David Geffen School of Medicine, UCLA, Los Angeles, CA, 90095, USA
| | - Eunok Im
- College of Pharmacy, Pusan National University, Busan, 46241, Republic of Korea.
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Ge Q, Chen X, Zhao Y, Mu H, Zhang J. Modulatory mechanisms of NLRP3: Potential roles in inflammasome activation. Life Sci 2020; 267:118918. [PMID: 33352170 DOI: 10.1016/j.lfs.2020.118918] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2020] [Revised: 12/07/2020] [Accepted: 12/15/2020] [Indexed: 12/11/2022]
Abstract
The NLRP3 inflammasome regulates innate immune and inflammatory responses by promoting pro-inflammatory cytokines such as IL-18 and IL-1β. NLRP3 is one of the main factors restricting the activation of the inflammasome, which is closely related to the abundance and localization of NLRP3. A substantial number of studies have focused on specifically targeting NLRP3 to develop inhibitors against NLRP3 inflammasome. Here, we succinctly review the regulation of NLRP3 expression at DNA/chromosome, transcriptional, post-transcriptional, and translation levels. These are critical for the fine regulation of the NLRP3 inflammasome.
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Affiliation(s)
- Qihui Ge
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin 300193, China
| | - Xinnong Chen
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin 300193, China
| | - Yixuan Zhao
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin 300193, China
| | - Huaiyu Mu
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin 300193, China
| | - Junping Zhang
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin 300193, China.
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29
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Li L, Wang XC, Gong PT, Zhang N, Zhang X, Li S, Li X, Liu SX, Zhang XX, Li W, Li JH, Zhang XC. ROS-mediated NLRP3 inflammasome activation participates in the response against Neospora caninum infection. Parasit Vectors 2020; 13:449. [PMID: 32891167 PMCID: PMC7487665 DOI: 10.1186/s13071-020-04331-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Accepted: 08/30/2020] [Indexed: 12/14/2022] Open
Abstract
Background Neospora caninum is an obligate intracellular protozoan that causes neosporosis, N. caninum infection is a major cause of abortion in cattle worldwide. Currently, specific treatment for neosporosis is not available. The NOD-like receptor family pyrin domain containing 3 (NLRP3) inflammasome is a cytoplasmic protein complex that plays an important role in host defense against N. caninum infection, but the underlying mechanisms are poorly understood. Methods The reactive oxygen species (ROS) inhibitor and the ROS inducer, wild-type (WT) and NLRP3-deficient peritoneal macrophages or mice were used to investigate the role of ROS in NLRP3 inflammasome activation and controlling parasite burdens. ROS production, cell death and cell viability, production of inflammasome-mediated IL-1β or IL-18, cleavage of caspase-1 and NLRP3 expression, as well as parasite burdens were detected. Results In vitro, N. caninum induced ROS generation in a dose-dependent manner in peritoneal macrophages. The pretreatment of ROS inhibitor N-acetyl-l-cysteine (NAC) significantly attenuated N. caninum-induced ROS production, LDH release, IL-1β secretion and NLRP3 expression, whereas N. caninum proliferation was notably increased. In contrary, the ROS inducer pyrogallol (PG) significantly enhanced ROS production and NLRP3 inflammasome activity and decreased the parasite burden in N. caninum-infected peritoneal macrophages. NADPH-dependent ROS-mediated NLRP3 inflammasome activation induced by N. caninum can also be confirmed by using the NADPH oxidase inhibitor diphenyleneiodonium chloride (DPI). However, the NAC or DPI pre-treatment or PG treatment did not significantly alter N. caninum-induced inflammasome activities and parasite proliferation in Nlrp3−/− peritoneal macrophages. In vivo, IL-18 releases in serum and parasite burdens in peritoneal exudate cells were significantly increased in PG-treated WT mice after infection with N. caninum; however, IL-18 productions and parasite burdens were not changed in PG-treated Nlrp3−/− mice. Furthermore, PG treatment in WT mice infected with N. caninum significantly decreased the mortality, weight loss and parasite burdens in tissues and histopathological lesions. Conclusions Neospora caninum-induced NADPH-dependent ROS generation plays an important role in NLRP3 inflammasome activation and controlling parasites. The ROS inducer PG can control N. caninum infection mainly by promoting NLRP3 inflammasome activation. ROS-mediated NLRP3 inflammasome axis can be a potential therapeutic target for neosporosis.![]()
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Affiliation(s)
- Lu Li
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, 130062, PR China
| | - Xiao-Cen Wang
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, 130062, PR China
| | - Peng-Tao Gong
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, 130062, PR China
| | - Nan Zhang
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, 130062, PR China
| | - Xu Zhang
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, 130062, PR China
| | - Shan Li
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, 130062, PR China
| | - Xin Li
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, 130062, PR China
| | - Shao-Xiong Liu
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, 130062, PR China
| | - Xiao-Xu Zhang
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, 130062, PR China
| | - Wei Li
- Heilongjiang Key Laboratory for Zoonosis, College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, PR China
| | - Jian-Hua Li
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, 130062, PR China.
| | - Xi-Chen Zhang
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, 130062, PR China.
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Tan L, Wang Y, Jiang Y, Wang R, Zu J, Tan R. Hydroxysafflor Yellow A Together with Blood-Brain Barrier Regulator Lexiscan for Cerebral Ischemia Reperfusion Injury Treatment. ACS OMEGA 2020; 5:19151-19164. [PMID: 32775917 PMCID: PMC7408215 DOI: 10.1021/acsomega.0c02502] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 07/10/2020] [Indexed: 05/10/2023]
Abstract
Pharmacodynamic and biodistribution effects are two important factors in drug research. As a clinical drug, the neuroprotective effects and mechanisms of hydroxysafflor yellow A (HSYA) have been widely reported but have still not been described in enough detail. In this study, we first aimed to improve the pharmacology of HSYA in nerve injury treatments. The down-regulative expression of cytokines, including NLRP3, ASC, Caspase-1, GSDMD, IL-1β, IL-18, LDH, NF-κB, and p-p56, suggested that HSYA could both suppress pyroptosis and apoptosis pathway activation during the nerve injury. Additionally, HSYA improved the cellular viability in an oxidative stress damage cell model. Second, to further improve the therapeutic effect of the HSYA, we tried to enhance the concentration of HSYA in a lesion. The FDA-approved adenosine receptor agonist Lexiscan (Lex) could inhibit the expression of P-glycoprotein on the endothelial cell surface to transiently increase the permeability of the blood-brain barrier (BBB) without any sustained damage, which was used to assist HSYA in passing through the BBB to increase the accumulation in the brain. Furthermore, living image and distribution detection in vivo showed that the accumulation of HSYA in the brain could be significantly increased with the addition of Lex. Lastly, HSYA together with Lex (Lex-HSYA) could significantly reduce the volume of cerebral infarction, improve the histopathological morphology, and recruit brain-derived neurotrophic factors to alleviate the cerebral ischemia reperfusion injury. In conclusion, the pyroptosis pathway could act as a novel therapeutic target of HSYA in nerve injury treatment, and Lex-HSYA could be a promising candidate for nerve injury treatments.
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Affiliation(s)
- Liwei Tan
- College
of Life Science and Engineering, Southwest
Jiaotong University, Chengdu 610031, China
| | - Yeye Wang
- College
of Medicine, Southwest Jiaotong University, Chengdu 610031, China
| | - Yu Jiang
- College
of Medicine, Southwest Jiaotong University, Chengdu 610031, China
| | - Rong Wang
- College
of Medicine, Southwest Jiaotong University, Chengdu 610031, China
| | - Jingzhi Zu
- College
of Medicine, Southwest Jiaotong University, Chengdu 610031, China
| | - Rui Tan
- College
of Life Science and Engineering, Southwest
Jiaotong University, Chengdu 610031, China
- or . Phone/Fax: +86-28-87634667
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31
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The Mechanism of Contrast-Induced Acute Kidney Injury and Its Association with Diabetes Mellitus. CONTRAST MEDIA & MOLECULAR IMAGING 2020; 2020:3295176. [PMID: 32788887 PMCID: PMC7330652 DOI: 10.1155/2020/3295176] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Accepted: 05/26/2020] [Indexed: 02/08/2023]
Abstract
Contrast-induced acute kidney injury (CI-AKI) is the third most common hospital-acquired AKI after AKI induced by renal perfusion insufficiency and nephrotoxic drugs, taking great adverse effects on the prognosis and increasing hospital stay and medical cost. Diabetes nephropathy (DN) is a common chronic complication of DM (diabetes mellitus), and DN is an independent risk factor for chronic kidney disease (CKD) and CI-AKI. The incidence of CI-AKI significantly increases in patients with renal injury, especially in DM-related nephropathy. The etiology of CI-AKI is not fully clear, and research studies on how DM becomes a facilitated factor of CI-AKI are limited. This review describes the mechanism from three aspects. ① Pathophysiological changes of CI-AKI in kidney under high-glucose status (HGS). HGS can enhance the oxidative stress and increase ROS which next causes stronger vessel constriction and insufficient oxygen supply in kidney via vasoactive substances. HGS also aggravates some ion pump load and the latter increases oxygen consumption. CI-AKI and HGS are mutually causal, making the kidney function continue to decline. ② Immunological changes of DM promoting CI-AKI. Some innate immune cells and pattern recognition receptors (PRRs) in DM and/or DN may respond to some damage-associated molecular patterns (DAMPs) formed by CI-AKI. These effects overlap with some pathophysiological changes in hyperglycemia. ③ Signaling pathways related to both CI-AKI and DM. These pathways involved in CI-AKI are closely associated with apoptosis, inflammation, and ROS production, and some studies suggest that these pathways may be potential targets for alleviating CI-AKI. In conclusion, the pathogenesis of CI-AKI and the mechanism of DM as a predisposing factor for CI-AKI, especially signaling pathways, need further investigation to provide new clinical approaches to prevent and treat CI-AKI.
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Moretti J, Blander JM. Increasing complexity of NLRP3 inflammasome regulation. J Leukoc Biol 2020; 109:561-571. [PMID: 32531835 DOI: 10.1002/jlb.3mr0520-104rr] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 05/10/2020] [Accepted: 05/18/2020] [Indexed: 12/20/2022] Open
Abstract
Inflammasomes are multiprotein complexes that assemble upon detection of danger signals to activate the inflammatory enzyme caspase-1, trigger secretion of the highly proinflammatory cytokine IL-1β, and induce an inflammatory cell death called pyroptosis. Distinctiveness of the nucleotide-binding oligomerization (NOD), Leucine-rich repeat (LRR)-containing protein (NLRP3) inflammasome resides in the diversity of molecules that induce its activation, indicating a certain intricacy. Furthermore, besides the canonical activation of NLRP3 in response to various stimuli, caspase-11-dependent detection of intracellular LPS activates NLRP3 through a noncanonical pathway. Several aspects of the NLRP3 inflammasome are not characterized or remain unclear. In this review, we summarize the different modes of NLRP3 activation. We describe recent insights into post-translational and cellular regulation that confer further complexity to NLRP3 inflammasomes.
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Affiliation(s)
- Julien Moretti
- The Jill Roberts Institute for Research in Inflammatory Bowel Disease, Weill Cornell Graduate School of Medical Science, Weill Cornell Medicine, Cornell University, New York, New York, USA.,Department of Microbiology and Immunology, Weill Cornell Graduate School of Medical Science, Weill Cornell Medicine, Cornell University, New York, New York, USA
| | - J Magarian Blander
- The Jill Roberts Institute for Research in Inflammatory Bowel Disease, Weill Cornell Graduate School of Medical Science, Weill Cornell Medicine, Cornell University, New York, New York, USA.,Department of Microbiology and Immunology, Weill Cornell Graduate School of Medical Science, Weill Cornell Medicine, Cornell University, New York, New York, USA.,Joan and Sanford I. Weill Department of Medicine, Weill Cornell Graduate School of Medical Science, Weill Cornell Medicine, Cornell University, New York, New York, USA.,Sandra and Edward Meyer Cancer Center, Weill Cornell Graduate School of Medical Science, Weill Cornell Medicine, Cornell University, New York, New York, USA.,Immunology and Microbial Pathogenesis Program, Weill Cornell Graduate School of Medical Science, Weill Cornell Medicine, Cornell University, New York, New York, USA
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Corticosterone Inhibits LPS-Induced NLRP3 Inflammasome Priming in Macrophages by Suppressing Xanthine Oxidase. Mediators Inflamm 2020; 2020:6959741. [PMID: 32508525 PMCID: PMC7251469 DOI: 10.1155/2020/6959741] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Accepted: 04/27/2020] [Indexed: 12/22/2022] Open
Abstract
Following traumatic insult and associated pathogen infection, innate immunity is activated during the perioperative period, especially the NLRP3 inflammasome in macrophages. The neuroendocrine response is also rapidly activated to regulate excessive inflammation; however, the molecular mechanisms are still not completely clear. This study is aimed at investigating the modulation of NLRP3 inflammasome priming by endogenous glucocorticoids (corticosterone, CORT) and its relationship with xanthine oxidase (XO). RAW264.7 murine macrophages were stimulated with LPS (1 μg/ml). LPS-induced NLRP3 expression was pretreated by CORT at different concentrations (0-900 ng/ml). Then, the effect of higher concentrations of CORT (700 ng/ml) on LPS-induced NLRP3 expression and the effect of allopurinol (250 μg/ml) were observed. Finally, the effects of a CORT antagonist (RU486) on XO expression and activity and NLRP3 expression in macrophages were further analyzed. Supernatant levels IL-1β and IL-18 were measured. The results showed that LPS-induced NLRP3 expression was upregulated further by pretreatment with CORT (300 ng/ml) (P < 0.05); however, higher concentrations of CORT (greater than 700 ng/ml) downregulated NLRP3 expression (P < 0.01) and the expression and activity of XO (P < 0.05 and P < 0.01, respectively). Allopurinol significantly inhibited NLRP3 expression. However, XO expression and activity, NLRP3 expression, and supernatant IL-1β and IL-18 levels were significantly increased in the RU486 group compared with the CORT group. In conclusion, our results suggested that CORT inhibits LPS-induced NLRP3 inflammasome priming in macrophages. The underlying mechanism is related to the modulation of XO expression and activity, which may be involved in priming and activating the NLRP3 inflammasome.
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Ipseiz N, Pickering RJ, Rosas M, Tyrrell VJ, Davies LC, Orr SJ, Czubala MA, Fathalla D, Robertson AA, Bryant CE, O'Donnell V, Taylor PR. Tissue-resident macrophages actively suppress IL-1beta release via a reactive prostanoid/IL-10 pathway. EMBO J 2020; 39:e103454. [PMID: 32484988 PMCID: PMC7360975 DOI: 10.15252/embj.2019103454] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 04/28/2020] [Accepted: 04/30/2020] [Indexed: 12/30/2022] Open
Abstract
The alarm cytokine interleukin‐1β (IL‐1β) is a potent activator of the inflammatory cascade following pathogen recognition. IL‐1β production typically requires two signals: first, priming by recognition of pathogen‐associated molecular patterns leads to the production of immature pro‐IL‐1β; subsequently, inflammasome activation by a secondary signal allows cleavage and maturation of IL‐1β from its pro‐form. However, despite the important role of IL‐1β in controlling local and systemic inflammation, its overall regulation is still not fully understood. Here we demonstrate that peritoneal tissue‐resident macrophages use an active inhibitory pathway, to suppress IL‐1β processing, which can otherwise occur in the absence of a second signal. Programming by the transcription factor Gata6 controls the expression of prostacyclin synthase, which is required for prostacyclin production after lipopolysaccharide stimulation and optimal induction of IL‐10. In the absence of secondary signal, IL‐10 potently inhibits IL‐1β processing, providing a previously unrecognized control of IL‐1β in tissue‐resident macrophages.
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Affiliation(s)
- Natacha Ipseiz
- Systems Immunity Research Institute, Heath Park, Cardiff University, Cardiff, UK
| | - Robert J Pickering
- Systems Immunity Research Institute, Heath Park, Cardiff University, Cardiff, UK
| | - Marcela Rosas
- Systems Immunity Research Institute, Heath Park, Cardiff University, Cardiff, UK
| | - Victoria J Tyrrell
- Systems Immunity Research Institute, Heath Park, Cardiff University, Cardiff, UK
| | - Luke C Davies
- Systems Immunity Research Institute, Heath Park, Cardiff University, Cardiff, UK
| | - Selinda J Orr
- Systems Immunity Research Institute, Heath Park, Cardiff University, Cardiff, UK.,Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Science, Queen's University Belfast, Belfast, UK
| | - Magdalena A Czubala
- Systems Immunity Research Institute, Heath Park, Cardiff University, Cardiff, UK
| | - Dina Fathalla
- Systems Immunity Research Institute, Heath Park, Cardiff University, Cardiff, UK.,UK Dementia Research Institute at Cardiff, Cardiff University, Cardiff, UK
| | - Avril Ab Robertson
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Qld, Australia
| | - Clare E Bryant
- Immunology Catalyst Programme, GSK, Cambridge, UK.,Department of Veterinary Medicine, University of Cambridge, Cambridge, UK
| | - Valerie O'Donnell
- Systems Immunity Research Institute, Heath Park, Cardiff University, Cardiff, UK
| | - Philip R Taylor
- Systems Immunity Research Institute, Heath Park, Cardiff University, Cardiff, UK.,UK Dementia Research Institute at Cardiff, Cardiff University, Cardiff, UK
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Ferrara F, Pambianchi E, Pecorelli A, Woodby B, Messano N, Therrien JP, Lila MA, Valacchi G. Redox regulation of cutaneous inflammasome by ozone exposure. Free Radic Biol Med 2020; 152:561-570. [PMID: 31778733 DOI: 10.1016/j.freeradbiomed.2019.11.031] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Revised: 11/22/2019] [Accepted: 11/25/2019] [Indexed: 12/13/2022]
Abstract
Several pollutants have been shown to affect skin physiology, among which ozone (O3) is one of the most toxic. Prolonged exposure to O3 leads to increased oxidative damage and cutaneous inflammation. The correlation between O3 exposure and inflammatory cutaneous conditions (atopic dermatitis, psoriasis, acne and eczema) has been already suggested, although the mechanism involved is still unclear. In the last few decades, a new multiprotein complex, the inflammasome, has been discovered and linked to tissue inflammation, including inflammatory skin conditions. The inflammasome activates inflammatory responses and contributes to the maturation of cytokines such as interleukin 1β (IL-1β) and interleukin 18. This complex is also responsive to reactive oxygen species (ROS), which plays a role in triggering the activation of the complex. On this basis it is possible hypothesize that the activation of the inflammasome could be the link between the inflammatory skin conditions associated to O3 exposure. In the present work, the ability of O3 to induce inflammasome activation was determined in different skin models, ranging from 2D (human keratinocytes) to 3D models in vitro and ex vivo. Results clearly showed that O3 exposure increased both transcript and protein levels of the main inflammasome complex, such as ASC and caspase-1. Furthermore, by using both immunofluorescence and an ASC oligomerization assay the formation of the complex was determined together with increased secreted levels of both IL-18 and IL-1β. Of note is that H2O2 and to a less extent 4HNE (both considered the main mediators of O3 interaction with cellular membranes) were also able to activate skin inflammasome while the use of catalase prevents the activation. This study demonstrated that O3 can activate cutaneous inflammasome in a redox dependent manner suggesting a possible role of this new pathway in pollution induced inflammatory skin conditions.
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Affiliation(s)
- Francesca Ferrara
- Plants for Human Health Institute, NC Research Campus, NC State University, NC, USA; Dept. of Biomedical and Specialist Surgical Sciences, University of Ferrara, Ferrara, Italy
| | - Erika Pambianchi
- Plants for Human Health Institute, NC Research Campus, NC State University, NC, USA
| | - Alessandra Pecorelli
- Plants for Human Health Institute, NC Research Campus, NC State University, NC, USA
| | - Brittany Woodby
- Plants for Human Health Institute, NC Research Campus, NC State University, NC, USA
| | - Nicolo' Messano
- Plants for Human Health Institute, NC Research Campus, NC State University, NC, USA
| | | | - Mary Ann Lila
- Plants for Human Health Institute, NC Research Campus, NC State University, NC, USA
| | - Giuseppe Valacchi
- Plants for Human Health Institute, NC Research Campus, NC State University, NC, USA; Dept. of Biomedical and Specialist Surgical Sciences, University of Ferrara, Ferrara, Italy; Department of Food and Nutrition, Kyung Hee University, Seoul, South Korea.
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36
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The Nlrp3 inflammasome as a "rising star" in studies of normal and malignant hematopoiesis. Leukemia 2020; 34:1512-1523. [PMID: 32313108 PMCID: PMC7266743 DOI: 10.1038/s41375-020-0827-8] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Revised: 03/26/2020] [Accepted: 03/31/2020] [Indexed: 02/08/2023]
Abstract
Recent investigations indicate that hematopoiesis is coregulated by innate immunity signals and by pathways characteristic of the activation of innate immunity cells that also operate in normal hematopoietic stem progenitor cells (HSPCs). This should not be surprising because of the common developmental origin of these cells from a hemato/lymphopoietic stem cell. An important integrating factor is the Nlrp3 inflammasome, which has emerged as a major sensor of changes in body microenvironments, cell activation, and cell metabolic activity. It is currently the best-studied member of the inflammasome family expressed in hematopoietic and lymphopoietic cells, including also HSPCs. It is proposed as playing a role in (i) the development and expansion of HSPCs, (ii) their release from bone marrow (BM) into peripheral blood (PB) in stress situations and during pharmacological mobilization, (iii) their homing to BM after transplantation, and (iv) their aging and the regulation of hematopoietic cell metabolism. The Nlrp3 inflammasome is also involved in certain hematological pathologies, including (i) myelodysplastic syndrome, (ii) myeloproliferative neoplasms, (iii) leukemia, and (iv) graft-versus-host disease (GvHD) after transplantation. The aim of this review is to shed more light on this intriguing intracellular protein complex that has become a “rising star” in studies focused on both normal steady-state and pathological hematopoiesis.
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37
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Zhou ZF, Jiang L, Zhao Q, Wang Y, Zhou J, Chen QK, Lv JL. Roles of pattern recognition receptors in diabetic nephropathy. J Zhejiang Univ Sci B 2020; 21:192-203. [PMID: 32133797 DOI: 10.1631/jzus.b1900490] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Diabetic nephropathy (DN) is currently the most common complication of diabetes. It is considered to be one of the leading causes of end-stage renal disease (ESRD) and affects many diabetic patients. The pathogenesis of DN is extremely complex and has not yet been clarified; however, in recent years, increasing evidence has shown the important role of innate immunity in DN pathogenesis. Pattern recognition receptors (PRRs) are important components of the innate immune system and have a significant impact on the occurrence and development of DN. In this review, we classify PRRs into secretory, endocytic, and signal transduction PRRs according to the relationship between the PRRs and subcellular compartments. PRRs can recognize related pathogen-associated molecular patterns (PAMPs) and danger-associated molecular patterns (DAMPs), thus triggering a series of inflammatory responses, promoting renal fibrosis, and finally causing renal impairment. In this review, we describe the proposed role of each type of PRRs in the development and progression of DN.
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Affiliation(s)
- Zhi-Feng Zhou
- The First Clinical Medical College of Nanchang University, Nanchang 330006, China
| | - Lei Jiang
- Department of Nephrology, the First Affiliated Hospital of Nanchang University, Institute of Molecular Immunology of Kidney Disease of Nanchang University, Nanchang 330006, China
| | - Qing Zhao
- Department of Nephrology, the First Affiliated Hospital of Nanchang University, Institute of Molecular Immunology of Kidney Disease of Nanchang University, Nanchang 330006, China
| | - Yu Wang
- Department of Nephrology, the First Affiliated Hospital of Nanchang University, Institute of Molecular Immunology of Kidney Disease of Nanchang University, Nanchang 330006, China
| | - Jing Zhou
- Department of Nephrology, the First Affiliated Hospital of Nanchang University, Institute of Molecular Immunology of Kidney Disease of Nanchang University, Nanchang 330006, China
| | - Qin-Kai Chen
- Department of Nephrology, the First Affiliated Hospital of Nanchang University, Institute of Molecular Immunology of Kidney Disease of Nanchang University, Nanchang 330006, China
| | - Jin-Lei Lv
- Department of Nephrology, the First Affiliated Hospital of Nanchang University, Institute of Molecular Immunology of Kidney Disease of Nanchang University, Nanchang 330006, China
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Rudloff I, Ung HK, Dowling JK, Mansell A, D’Andrea L, Ellisdon AM, Whisstock JC, Berger PJ, Nold-Petry CA, Nold MF. Parsing the IL-37-Mediated Suppression of Inflammasome Function. Cells 2020; 9:cells9010178. [PMID: 31936823 PMCID: PMC7017287 DOI: 10.3390/cells9010178] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Revised: 01/07/2020] [Accepted: 01/08/2020] [Indexed: 12/20/2022] Open
Abstract
Interleukin (IL)-37 is a member of the IL-1 family of cytokines. Although its broad anti-inflammatory properties are well described, the effects of IL-37 on inflammasome function remain poorly understood. Performing gene expression analyses, ASC oligomerization/speck assays and caspase-1 assays in bone marrow-derived macrophages (BMDM), and employing an in vivo endotoxemia model, we studied how IL-37 affects the expression and maturation of IL-1β and IL-18, inflammasome activation, and pyroptosis in detail. IL-37 inhibited IL-1β production by NLRP3 and AIM2 inflammasomes, and IL-18 production by the NLRP3 inflammasome. This inhibition was partially attributable to effects on gene expression: whereas IL-37 did not affect lipopolysaccharide (LPS)-induced mRNA expression of Il18 or inflammasome components, IL-37-transgenic BMDM displayed an up to 83% inhibition of baseline and LPS-stimulated Il1b compared to their wild-type counterparts. Importantly, we observed that IL-37 suppresses nigericin- and silica-induced ASC oligomerization/speck formation (a step in inflammasome activation and subsequent caspase-1 activation), and pyroptosis (-50%). In mice subjected to endotoxemia, IL-37 inhibited plasma IL-1β (-78% compared to wild-type animals) and IL-18 (-61%). Thus, our study adds suppression of inflammasome activity to the portfolio of anti-inflammatory pathways employed by IL-37, highlighting this cytokine as a potential tool for treating inflammasome-driven diseases.
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Affiliation(s)
- Ina Rudloff
- Department of Paediatrics, Monash University, Clayton, Victoria 3168, Australia; (I.R.); (H.K.U.); (P.J.B.); (C.A.N.-P.)
- Ritchie Centre, Hudson Institute of Medical Research, Clayton, Victoria 3168, Australia
| | - Holly K. Ung
- Department of Paediatrics, Monash University, Clayton, Victoria 3168, Australia; (I.R.); (H.K.U.); (P.J.B.); (C.A.N.-P.)
- Ritchie Centre, Hudson Institute of Medical Research, Clayton, Victoria 3168, Australia
| | - Jennifer K. Dowling
- School of Pharmacy and Biomolecular Sciences, Royal College of Surgeons in Ireland, 123 St Stephens Green, Dublin 2, Ireland;
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, Victoria 3168, Australia;
- Department of Molecular and Translational Sciences, Monash University, Clayton, Victoria 3168, Australia
| | - Ashley Mansell
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, Victoria 3168, Australia;
- Department of Molecular and Translational Sciences, Monash University, Clayton, Victoria 3168, Australia
| | - Laura D’Andrea
- Biomedicine Discovery Institute, Monash University, Clayton, Victoria 3168, Australia; (L.D.); (A.M.E.); (J.C.W.)
| | - Andrew M. Ellisdon
- Biomedicine Discovery Institute, Monash University, Clayton, Victoria 3168, Australia; (L.D.); (A.M.E.); (J.C.W.)
| | - James C. Whisstock
- Biomedicine Discovery Institute, Monash University, Clayton, Victoria 3168, Australia; (L.D.); (A.M.E.); (J.C.W.)
- Australian Research Council Centre of Excellence in Advanced Molecular Imaging, Monash University, Clayton, Victoria 3168, Australia
| | - Philip J. Berger
- Department of Paediatrics, Monash University, Clayton, Victoria 3168, Australia; (I.R.); (H.K.U.); (P.J.B.); (C.A.N.-P.)
- Ritchie Centre, Hudson Institute of Medical Research, Clayton, Victoria 3168, Australia
| | - Claudia A. Nold-Petry
- Department of Paediatrics, Monash University, Clayton, Victoria 3168, Australia; (I.R.); (H.K.U.); (P.J.B.); (C.A.N.-P.)
- Ritchie Centre, Hudson Institute of Medical Research, Clayton, Victoria 3168, Australia
| | - Marcel F. Nold
- Department of Paediatrics, Monash University, Clayton, Victoria 3168, Australia; (I.R.); (H.K.U.); (P.J.B.); (C.A.N.-P.)
- Ritchie Centre, Hudson Institute of Medical Research, Clayton, Victoria 3168, Australia
- Monash Newborn, Monash Children’s Hospital, Clayton, Victoria 3168, Australia
- Correspondence: ; Tel.: +61-3-8572-2815
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39
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Effect of Free Fatty Acids on Inflammatory Gene Expression and Hydrogen Peroxide Production by Ex Vivo Blood Mononuclear Cells. Nutrients 2020; 12:nu12010146. [PMID: 31947975 PMCID: PMC7019607 DOI: 10.3390/nu12010146] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 11/28/2019] [Accepted: 12/31/2019] [Indexed: 12/17/2022] Open
Abstract
The aim of this study was to assess free fatty acids’ (FAs) ex vivo anti-/proinflammatory capabilities and their influence on inflammatory gene expression and H2O2 production by human peripheral blood mononuclear cells (PBMCs). Anthropometric and clinical measurements were performed in 26 participants with metabolic syndrome. Isolated PBMCs were incubated ex vivo for 2 h with several free fatty acids—palmitic, oleic, α-linolenic, γ-linolenic, arachidonic and docosahexaenoic at 50 μM, and lipopolysaccharide (LPS) alone or in combination. H2O2 production and IL6, NFκB, TLR2, TNFα, and COX-2 gene expressions were determined. Palmitic, γ-linolenic, and arachidonic acids showed minor effects on inflammatory gene expression, whereas oleic, α-linolenic, and docosahexaenoic acids reduced proinflammatory gene expression in LPS-stimulated PBMCs. Arachidonic and α-linolenic acids treatment enhanced LPS-stimulated H2O2 production by PBMCs, while palmitic, oleic, γ-linolenic, and docosahexaenoic acids did not exert significant effects. Oleic, α-linolenic, and docosahexaenoic acids induced anti-inflammatory responses in PBMCs. Arachidonic and α-linolenic acids enhanced the oxidative status of LPS-stimulated PBMCs. In conclusion, PBMC ex vivo assays are useful to assess the anti-/proinflammatory and redox-modulatory effects of fatty acids or other food bioactive compounds.
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Bekić M, Tomić S, Rudolf R, Milanović M, Vučević D, Anžel I, Čolić M. The Effect of Stabilisation Agents on the Immunomodulatory Properties of Gold Nanoparticles Obtained by Ultrasonic Spray Pyrolysis. MATERIALS 2019; 12:ma12244121. [PMID: 31835366 PMCID: PMC6947030 DOI: 10.3390/ma12244121] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 12/04/2019] [Accepted: 12/06/2019] [Indexed: 12/31/2022]
Abstract
Gold nanoparticles (GNPs) have been investigated extensively as drug carriers in tumour immunotherapy in combination with photothermal therapy. For this purpose, GNPs should be stabilised in biological fluids. The goal of this study was to examine how stabilisation agents influence cytotoxicity and immune response in vitro. Spherical GNPs, 20 nm in size, were prepared by ultrasonic spray pyrolysis (USP). Three types of stabilising agents were used: sodium citrate (SC), polyvinyl-pyrrolidone (PVP), and poly-ethylene glycol (PEG). Pristine, non-stabilised GNPs were used as a control. The culture models were mouse L929 cells, B16F10 melanoma cells and human peripheral blood mononuclear cells (PBMNCs), obtained from healthy donors. Control SC- and PEG-GNPs were non-cytotoxic at concentrations (range 1–100 µg/mL), in contrast to PVP-GNPs, which were cytotoxic at higher concentrations. Control GNPs inhibited the production of IFN-ϒ slightly, and augmented the production of IL-10 by PHA-stimulated PBMNC cultures. PEG-GNPs inhibited the production of pro-inflammatory cytokines (IL-1, IL-6, IL-8, TNF-α) and Th1-related cytokines (IFN-ϒ and IL-12p70), and increased the production of Th2 cytokines (IL-4 and IL-5). SC-PEG inhibited the production of IL-8 and IL-17A. In contrast, PVP-GNPs stimulated the production of pro-inflammatory cytokines, Th1 cytokines, and IL-17A, but also IL-10. When uptake of GNPs by monocytes/macrophages in PBMNC cultures was analysed, the ingestion of PEG- GNPs was significantly lower compared to SC- and PVP-GNPs. In conclusion, stabilisation agents modulate biocompatibility and immune response significantly, so their adequate choice for preparation of GNPs is an important factor when considering the use of GNPs for application in vivo.
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Affiliation(s)
- Marina Bekić
- Institute for Application of Nuclear Energy, University of Belgrade, 11000 Belgrade, Serbia; (M.B.); (S.T.)
| | - Sergej Tomić
- Institute for Application of Nuclear Energy, University of Belgrade, 11000 Belgrade, Serbia; (M.B.); (S.T.)
| | - Rebeka Rudolf
- Faculty for Mechanical Engineering, University of Maribor, 2000 Maribor, Slovenia; (R.R.); (I.A.)
| | - Marijana Milanović
- Medical Faculty of the Military Medical Academy, University of Defense in Belgrade, 11000 Belgrade, Serbia; (M.M.); (D.V.)
| | - Dragana Vučević
- Medical Faculty of the Military Medical Academy, University of Defense in Belgrade, 11000 Belgrade, Serbia; (M.M.); (D.V.)
| | - Ivan Anžel
- Faculty for Mechanical Engineering, University of Maribor, 2000 Maribor, Slovenia; (R.R.); (I.A.)
| | - Miodrag Čolić
- Institute for Application of Nuclear Energy, University of Belgrade, 11000 Belgrade, Serbia; (M.B.); (S.T.)
- Medical Faculty of the Military Medical Academy, University of Defense in Belgrade, 11000 Belgrade, Serbia; (M.M.); (D.V.)
- Medical Faculty Foča, University of East Sarajevo, 73300 Foča, Republic of Srpska, Bosnia and Hercegovina
- Correspondence: ; Tel.: +381-11-219-3194
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Duan S, Wang N, Huang L, Zhao Y, Shao H, Jin Y, Zhang R, Li C, Wu W, Wang J, Feng F. NLRP3 inflammasome activation is associated with PM 2.5 -induced cardiac functional and pathological injury in mice. ENVIRONMENTAL TOXICOLOGY 2019; 34:1246-1254. [PMID: 31313453 DOI: 10.1002/tox.22825] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 06/14/2019] [Accepted: 06/26/2019] [Indexed: 05/05/2023]
Abstract
Growing evidences indicate that inflammation induced by PM2.5 exposure has been considered as a major driving force for the development of cardiovascular diseases. However, the mechanisms underlying PM2.5 -induced cardiac injury remain unclear. This study aims to investigate the role of NLRP3 inflammasome in PM2.5 -induced cardiac functional and pathological injury in mice. In this study, BALB/c mice were intratracheally instilled with PM2.5 suspension (4.0 mg/kg BW) for 5 days to set up a cardiac injury model, which was evaluated by electrocardiogram monitoring, HE and Masson staining. Then, the effects of PM2.5 on the expression of α-SMA, NLRP3, IL-1β, and IL-18 proteins and the activation of caspase-1 and IL-1β were investigated. The results showed that PM2.5 exposure induced characteristic abnormal ECG changes such as the abnormality of heart rhythm, tachycardia, and T-wave reduction. Inflammatory cell infiltration and fibrosis were observed in the heart tissues of PM2.5 -exposed mice. Meanwhile, PM2.5 exposure increased the expression of α-SMA. And, NLRP3 activation-associated proteins of NLRP3, IL-1β, IL-18, Cleaved caspase-1 p10, and Cleaved IL-1β were upregulated in heart tissue of PM2.5 -induced mice. In summary, PM2.5 exposure could induce cardiac functional and pathological injury, which may be associated with the activation of NLRP3 inflammasome.
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Affiliation(s)
- Shuyin Duan
- Department of Occupational and Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, China
| | - Na Wang
- Department of Occupational and Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, China
| | - Li Huang
- Department of Toxicology, College of Public Health, Zhengzhou University, Zhengzhou, China
| | - Ying Zhao
- Department of Toxicology, College of Public Health, Zhengzhou University, Zhengzhou, China
| | - Hua Shao
- Department of Toxicology, College of Public Health, Zhengzhou University, Zhengzhou, China
| | - Yuefei Jin
- Department of Occupational and Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, China
| | - Ruiqin Zhang
- Research Institute of Environmental Science, College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, China
| | - Chunyang Li
- Department of Toxicology, College of Public Health, Zhengzhou University, Zhengzhou, China
| | - Weidong Wu
- Department of Occupational and Environmental Health, School of Public Health, Xinxiang Medical University, Xinxiang, Henan, China
| | - Jing Wang
- Department of Pulmonary, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Feifei Feng
- Department of Toxicology, College of Public Health, Zhengzhou University, Zhengzhou, China
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FNDC5 inhibits foam cell formation and monocyte adhesion in vascular smooth muscle cells via suppressing NFκB-mediated NLRP3 upregulation. Vascul Pharmacol 2019; 121:106579. [DOI: 10.1016/j.vph.2019.106579] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Revised: 07/12/2019] [Accepted: 07/13/2019] [Indexed: 12/21/2022]
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43
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Głombik K, Trojan E, Kurek A, Budziszewska B, Basta-Kaim A. Inflammatory Consequences of Maternal Diabetes on the Offspring Brain: a Hippocampal Organotypic Culture Study. Neurotox Res 2019; 36:357-375. [PMID: 31197747 PMCID: PMC6616224 DOI: 10.1007/s12640-019-00070-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 05/10/2019] [Accepted: 05/28/2019] [Indexed: 01/09/2023]
Abstract
Gestational diabetes is a disorder associated with abnormal chronic inflammation that poses a risk to the developing fetus. We investigated the effects of experimentally induced diabetes (streptozotocin model) in Wistar female rats on the inflammatory status of the hippocampi of their offspring. Additionally, the impact of antidiabetic drugs (metformin and glyburide) on inflammatory processes was evaluated. Organotypic hippocampal cultures (OHCs) were prepared from the brains of the 7-day-old rat offspring of control and diabetic mother rats. On the 7th day in vitro, the cultures were pretreated with metformin (3 μM) or glyburide (1 μM) and then stimulated for 24 h with lipopolysaccharide (LPS, 1 μg/ml). The OHCs obtained from the offspring of diabetic mothers were characterized by the increased mortality of cells and an enhanced susceptibility to damage caused by LPS. Although we showed that LPS stimulated the secretion of pro-inflammatory cytokines (IL-1β, IL-6, TNF-α) in the control and diabetic cultures, the levels of IL-1β and IL-6 in the OHC medium obtained from the offspring of diabetic mothers were more pronounced. In the diabetic cultures, enhanced levels of TLR-4 and the overactivation of the NLRP3 inflammasome were demonstrated. Metformin and glyburide pretreatment normalized the LPS-induced IL-1β secretion in the control and diabetic cultures. Furthermore, glyburide diminished both: LPS-induced IL-6 and TNF-α secretion in the control and diabetic cultures and increased NF-κB p65 subunit phosphorylation. Glyburide also diminished the levels of the NLRP3 subunit and caspase-1, but only in the diabetic cultures. The results showed that maternal diabetes affected inflammatory processes in the offspring brain and increased hippocampal sensitivity to the LPS-induced inflammatory response. The use of antidiabetic agents, especially glyburide, had a beneficial impact on the changes caused by maternal diabetes.
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Affiliation(s)
- Katarzyna Głombik
- Department of Experimental Neuroendocrinology, Maj Institute of Pharmacology, Polish Academy of Sciences, 12 Smętna St, 31-343, Kraków, Poland.
| | - Ewa Trojan
- Department of Experimental Neuroendocrinology, Maj Institute of Pharmacology, Polish Academy of Sciences, 12 Smętna St, 31-343, Kraków, Poland
| | - Anna Kurek
- Department of Experimental Neuroendocrinology, Maj Institute of Pharmacology, Polish Academy of Sciences, 12 Smętna St, 31-343, Kraków, Poland
| | - Bogusława Budziszewska
- Department of Experimental Neuroendocrinology, Maj Institute of Pharmacology, Polish Academy of Sciences, 12 Smętna St, 31-343, Kraków, Poland
| | - Agnieszka Basta-Kaim
- Department of Experimental Neuroendocrinology, Maj Institute of Pharmacology, Polish Academy of Sciences, 12 Smętna St, 31-343, Kraków, Poland
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Hong P, Gu RN, Li FX, Xiong XX, Liang WB, You ZJ, Zhang HF. NLRP3 inflammasome as a potential treatment in ischemic stroke concomitant with diabetes. J Neuroinflammation 2019; 16:121. [PMID: 31174550 PMCID: PMC6554993 DOI: 10.1186/s12974-019-1498-0] [Citation(s) in RCA: 96] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2019] [Accepted: 05/02/2019] [Indexed: 02/07/2023] Open
Abstract
The NLRP3 (nucleotide-binding oligomerization domain-like receptor [NLR] family pyrin domain-containing 3) inflammasome is a member of the NLR family of innate immune cell sensors. These are crucial regulators of cytokine secretions, which promote ischemic cell death and insulin resistance. This review summarizes recent progress regarding the NLRP3 inflammasome as a potential treatment for ischemic stroke in patients with diabetes, two complicated diseases that often occur together. Stroke worsens glucose metabolism abnormalities, and the outcomes after stroke are more serious for diabetic patients compared with those without diabetes. Inflammation contributes to organ injury after ischemic stroke and diabetes. Recent research has focused on inhibiting the activation of inflammasomes and thus reducing the maturation of proinflammatory cytokines such as interleukin (IL)-1β and IL-18. Studies suggest that inhibition of NLRP3 prevents or alleviates both ischemic stroke and diabetes. Targeting against the assembly and activity of the NLRP3 inflammasome is a potential and novel therapy for inflammasome-associated diseases, including ischemic stroke concomitant with diabetes.
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Affiliation(s)
- Pu Hong
- Department of Anesthesiology, Zhujiang Hospital of Southern Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Ruo-Nan Gu
- Department of Anesthesiology, Zhujiang Hospital of Southern Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Feng-Xian Li
- Department of Anesthesiology, Zhujiang Hospital of Southern Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Xiao-Xing Xiong
- Department of Neurosurgery, Renmin Hospital of Wuhan University, Wuhan, Hubei, People's Republic of China
| | - Wen-Bin Liang
- Cardiac Electrophysiology Lab, University of Ottawa Heart Institute, Ottawa, Ontario, K1Y 4 W7, Canada.,Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, Ontario, K1Y 4 W7, Canada
| | - Zhi-Jian You
- Department of Anesthesiology, Shenzhen SAMII Medical Center, Shenzhen, Guangdong, People's Republic of China.
| | - Hong-Fei Zhang
- Department of Anesthesiology, Zhujiang Hospital of Southern Medical University, Guangzhou, Guangdong, People's Republic of China.
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Mechanism of the anti-inflammatory activity by a polysaccharide from Dictyophora indusiata in lipopolysaccharide-stimulated macrophages. Int J Biol Macromol 2019; 126:1158-1166. [DOI: 10.1016/j.ijbiomac.2019.01.022] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 01/02/2019] [Accepted: 01/04/2019] [Indexed: 12/21/2022]
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46
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Feng Z, Lemon SM. Innate Immunity to Enteric Hepatitis Viruses. Cold Spring Harb Perspect Med 2019; 9:cshperspect.a033464. [PMID: 29686040 DOI: 10.1101/cshperspect.a033464] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Although hepatitis A virus (HAV) and hepatitis E virus (HEV) are both positive-strand RNA viruses that replicate in the cytoplasm of hepatocytes, there are important differences in the ways they induce and counteract host innate immune responses. HAV is remarkably stealthy because of its ability to evade and disrupt innate signaling pathways that lead to interferon production. In contrast, HEV does not block interferon production. Instead, it persists in the presence of an interferon response. These differences may provide insight into HEV persistence in immunocompromised patients, an emerging health problem in developed countries.
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Affiliation(s)
- Zongdi Feng
- Center for Vaccines and Immunity, The Research Institute at Nationwide Children's Hospital, The Ohio State University College of Medicine, Columbus, Ohio 43205
| | - Stanley M Lemon
- Departments of Medicine and Microbiology & Immunology, Lineberger Comprehensive Cancer Center, The University of North Carolina, Chapel Hill, North Carolina 27599
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Administration of Dexmedetomidine inhibited NLRP3 inflammasome and microglial cell activities in hippocampus of traumatic brain injury rats. Biosci Rep 2018; 38:BSR20180892. [PMID: 30232232 PMCID: PMC6435454 DOI: 10.1042/bsr20180892] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 09/06/2018] [Accepted: 09/10/2018] [Indexed: 12/16/2022] Open
Abstract
The abnormally high nucleotide-binding oligomerization domain (NOD)-like receptor family pyrin domain containing 3 (NLRP3) inflammasome activity is a typical characteristic of traumatic brain injury (TBI). Dexmedetomidine (Dex) is a highly selective α-2 adrenergic receptor agonist that inhibits the activation of NLRP3. Thus, it was hypothesized that Dex could attenuate TBI by inhibiting NLRP3 inflammasome activity in hippocampus. Rats were subjected to controlled cortical impact method to induce TBI, and treated with Dex. The effect of Dex treatment on the cognitive function, NLRP3 activity, and microglial activation in rat brain tissues was assessed. The administration of Dex improved performance of TBI rats in Morris water maze (MWM) test, which was associated with the increased neurone viability and suppressed microglia activity. Moreover, the administration of Dex inhibited the neuroinflammation in brain tissue as well as the expressions of NLRP3 and caspase-1. Additionally, Dex and NLRP3 inhibitor, BAY-11-7082 had a synergistic effect in inhibiting NLRP3/caspase-1 axis activity and improving TBI. The findings outlined in the current study indicated that the improvement effect of Dex on TBI was related to its effect on NLRP3 activity.
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Substance P and IL-33 administered together stimulate a marked secretion of IL-1β from human mast cells, inhibited by methoxyluteolin. Proc Natl Acad Sci U S A 2018; 115:E9381-E9390. [PMID: 30232261 DOI: 10.1073/pnas.1810133115] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Mast cells are critical for allergic and inflammatory responses in which the peptide substance P (SP) and the cytokine IL-33 are involved. SP (0.01-1 μM) administered together with IL-33 (30 ng/mL) to human cultured LAD2 mast cells stimulates a marked increase (P < 0.0001) in secretion of the proinflammatory cytokine IL-1β. Preincubation of LAD2 (30 min) with the SP receptor (NK-1) antagonists L-733,060 (10 μM) or CP-96345 (10 µM) inhibits (P < 0.001) secretion of IL-1β stimulated by either SP (1 μM) or SP together with IL-33 (30 ng/mL). Surprisingly, secretion of IL-1β stimulated by IL-33 is inhibited (P < 0.001) by each NK-1 antagonist. Preincubation with an antibody against the IL-33 receptor ST2 inhibits (P < 0.0001) secretion of IL-1β stimulated either by IL-33 or together with SP. The combination of SP (1 μM) with IL-33 (30 ng/mL) increases IL-1β gene expression by 90-fold in LAD2 cells and by 200-fold in primary cultured mast cells from human umbilical cord blood. The combination of SP and IL-33 increases intracellular levels of IL-1β in LAD2 by 100-fold and gene expression of IL-1β and procaspase-1 by fivefold and pro-IL-1β by twofold. Active caspase-1 is present even in unstimulated cells and is detected extracellularly. Preincubation of LAD2 cells with the natural flavonoid methoxyluteolin (1-100 mM) inhibits (P < 0.0001) secretion and gene expression of IL-1β, procaspase-1, and pro-IL-1β. Mast cell secretion of IL-1β in response to SP and IL-33 reveals targets for the development of antiinflammatory therapies.
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Zhang R, Han S, Zhang Z, Zhang W, Yang J, Wan Z, Qin L. Cereal Fiber Ameliorates High-Fat/Cholesterol-Diet-Induced Atherosclerosis by Modulating the NLRP3 Inflammasome Pathway in ApoE -/- Mice. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:4827-4834. [PMID: 29664631 DOI: 10.1021/acs.jafc.8b00380] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Cereal fiber is associated with decreasing the risk of cardiovascular diseases. However, whether cereal fiber modulates inflammatory response and improves atherosclerosis remains unclear. This study evaluated the anti-atherosclerotic effect of cereal fibers from oat or wheat bran and explored the potential anti-inflammatory mechanisms. Male ApoE-/- mice were given a high-fat/cholesterol (HFC) diet or a HFC diet supplemented with 0.8% oat fiber or wheat bran fiber. After 18 weeks of the feeding period, serum lipids and inflammatory cytokines were measured. The relative protein levels of the nod-like receptor family pyrin domain containing 3 (NLRP3) inflammasome pathway and nuclear factor κB (NF-κB) were determined by the western blot method in aorta tissues. Pathologically, oat fiber and wheat fiber significantly reduced atherosclerotic plaques by 43.3 and 27.1%, respectively. Biochemically, cereal fiber markedly decreased the protein levels of myeloid differentiation factor 88 (MyD88) and toll-like receptor 4 (TLR4) in aortic tissues. The expression of NF-κB was similarly inhibited by both cereal fibers. In comparison to wheat bran fiber, oat fiber had greater effects in reducing the plague size and inhibiting TLR4/MyD88/NF-κB pathways. Such differences might come from modulation of the NLRP3 inflammasome pathway because the expressions of the cleavage of caspase-1 and interleukin (IL)-1β were inhibited only by oat fiber. The present study demonstrates that cereal fibers can attenuate inflammatory response and atherosclerosis in ApoE-/- mice. Such effects are pronounced with oat fiber and likely mediated by specific inhibition of oat fiber on the NLRP3 inflammasome pathway.
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Affiliation(s)
- Ru Zhang
- Department of Nutrition and Food Hygiene, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Disease, School of Public Health , Soochow University , 199 Renai Road , Suzhou , Jiangsu 215123 , People's Republic of China
| | - Shufen Han
- Department of Nutrition and Food Hygiene, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Disease, School of Public Health , Soochow University , 199 Renai Road , Suzhou , Jiangsu 215123 , People's Republic of China
| | - Zheng Zhang
- Department of Nutrition and Food Hygiene, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Disease, School of Public Health , Soochow University , 199 Renai Road , Suzhou , Jiangsu 215123 , People's Republic of China
| | - Weiguo Zhang
- Human Nutrition and Health , DSM Nutritional Products , 1-3 Xinyuan South Road , Beijing 100027 , People's Republic of China
| | - Jing Yang
- Department of Nutrition and Food Hygiene, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Disease, School of Public Health , Soochow University , 199 Renai Road , Suzhou , Jiangsu 215123 , People's Republic of China
| | - Zhongxiao Wan
- Department of Nutrition and Food Hygiene, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Disease, School of Public Health , Soochow University , 199 Renai Road , Suzhou , Jiangsu 215123 , People's Republic of China
| | - Liqiang Qin
- Department of Nutrition and Food Hygiene, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Disease, School of Public Health , Soochow University , 199 Renai Road , Suzhou , Jiangsu 215123 , People's Republic of China
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50
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Qu J, Tao XY, Teng P, Zhang Y, Guo CL, Hu L, Qian YN, Jiang CY, Liu WT. Blocking ATP-sensitive potassium channel alleviates morphine tolerance by inhibiting HSP70-TLR4-NLRP3-mediated neuroinflammation. J Neuroinflammation 2017; 14:228. [PMID: 29178967 PMCID: PMC5702153 DOI: 10.1186/s12974-017-0997-0] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Accepted: 11/07/2017] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Long-term use of morphine induces analgesic tolerance, which limits its clinical efficacy. Evidence indicated morphine-evoked neuroinflammation mediated by toll-like receptor 4 (TLR4) - NOD-like receptor protein 3 (NLRP3) inflammasome was important for morphine tolerance. In our study, we investigated whether other existing alternative pathways caused morphine-induced activation of TLR4 in microglia. We focused on heat shock protein 70 (HSP70), a damage-associated molecular pattern (DAMP), which was released from various cells upon stimulations under the control of KATP channel and bound with TLR4-inducing inflammation. Glibenclamide, a classic KATP channel blocker, can improve neuroinflammation by inhibiting the activation of NLRP3 inflammasome. Our present study investigated the effect and possible mechanism of glibenclamide in improving morphine tolerance via its specific inhibition on the release of HSP70 and activation of NLRP3 inflammasome induced by morphine. METHODS CD-1 mice were used for tail-flick test to evaluate morphine tolerance. The microglial cell line BV-2 and neural cell line SH-SY5Y were used to investigate the pharmacological effects and the mechanism of glibenclamide on morphine-induced neuroinflammation. The activation of microglia was accessed by immunofluorescence staining. Neuroinflammation-related cytokines were measured by western blot and real-time PCR. The level of HSP70 and related signaling pathway were evaluated by western blot and immunofluorescence staining. RESULTS Morphine induced the release of HSP70 from neurons. The released HSP70 activated microglia and triggered TLR4-mediated inflammatory response, leading to the phosphorylation of p38 mitogen-activated protein kinase (MAPK) and nuclear factor-κB (NF-κB) p65 and the activation of NLRP3 inflammasome. Moreover, anti-HSP70 neutralizing antibody partly attenuated chronic morphine tolerance. The secretion of HSP70 was under the control of MOR/AKT/KATP/ERK signal pathway. Glibenclamide as a classic KATP channel blocker markedly inhibited the release of HSP70 induced by morphine and suppressed HSP70-TLR4-NLRP3 inflammasome-mediated neuroinflammation, which consequently attenuated morphine tolerance. CONCLUSIONS Our study indicated that morphine-induced extracellular HSP70 was an alternative way for the activation of TLR4-NLRP3 in analgesic tolerance. The release of HSP70 was regulated by MOR/AKT/KATP/ERK pathway. Our study suggested a promising target, KATP channel and a new leading compound, glibenclamide, for treating morphine tolerance.
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Affiliation(s)
- Jie Qu
- Neuroprotective Drug Discovery Key Laboratory of Nanjing Medical University, Department of Pharmacology, Nanjing Medical University, 101 Longmian Avenue, Nanjing, Jiangsu, 211166, China
| | - Xue-You Tao
- Neuroprotective Drug Discovery Key Laboratory of Nanjing Medical University, Department of Pharmacology, Nanjing Medical University, 101 Longmian Avenue, Nanjing, Jiangsu, 211166, China.,Department of Anesthesiology, Yangzhou Maternal and Child Health Hospital Affiliated with Yangzhou Medical University, Yangzhou, China.,Department of Anesthesiology, 1st Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | - Peng Teng
- Neuroprotective Drug Discovery Key Laboratory of Nanjing Medical University, Department of Pharmacology, Nanjing Medical University, 101 Longmian Avenue, Nanjing, Jiangsu, 211166, China
| | - Yan Zhang
- Neuroprotective Drug Discovery Key Laboratory of Nanjing Medical University, Department of Pharmacology, Nanjing Medical University, 101 Longmian Avenue, Nanjing, Jiangsu, 211166, China.,Research Division of Pharmacology, China Pharmaceutical University, Nanjing, China
| | - Ci-Liang Guo
- Neuroprotective Drug Discovery Key Laboratory of Nanjing Medical University, Department of Pharmacology, Nanjing Medical University, 101 Longmian Avenue, Nanjing, Jiangsu, 211166, China
| | - Liang Hu
- Neuroprotective Drug Discovery Key Laboratory of Nanjing Medical University, Department of Pharmacology, Nanjing Medical University, 101 Longmian Avenue, Nanjing, Jiangsu, 211166, China
| | - Yan-Ning Qian
- Department of Anesthesiology, 1st Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | - Chun-Yi Jiang
- Neuroprotective Drug Discovery Key Laboratory of Nanjing Medical University, Department of Pharmacology, Nanjing Medical University, 101 Longmian Avenue, Nanjing, Jiangsu, 211166, China.
| | - Wen-Tao Liu
- Neuroprotective Drug Discovery Key Laboratory of Nanjing Medical University, Department of Pharmacology, Nanjing Medical University, 101 Longmian Avenue, Nanjing, Jiangsu, 211166, China. .,Department of Pharmacy, Sir Run Run Shaw Hospital Affiliated to Nanjing Medical University, Nanjing, China.
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