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NLRP3 inflammasome

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https://www.readbyqxmd.com/read/29666475/lincrna-cox2-regulates-nlrp3-inflammasome-and-autophagy-mediated-neuroinflammation
#1
Zhenyi Xue, Zimu Zhang, Hongkun Liu, Wen Li, Xiangdong Guo, Zhihui Zhang, Ying Liu, Long Jia, Yan Li, Yinghui Ren, Hongwei Yang, Lijuan Zhang, Qi Zhang, Yurong Da, Junwei Hao, Zhi Yao, Rongxin Zhang
Inflammasome activation plays key roles in host defense, but also contributes to the pathogenesis of auto-inflammatory, and neurodegenerative diseases. As autophagy is connected with both the innate and adaptive immune systems, autophagic dysfunction is also closely related to inflammation, infection, and neurodegeneration. Here we identify that lincRNA-Cox2, previously known as a mediator of both the activation and repression of immune genes expression in innate immune cells, could bind NF-κB p65 and promote its nuclear translocation and transcription, modulating the expression of inflammasome sensor NLRP3 and adaptor ASC...
April 17, 2018: Cell Death and Differentiation
https://www.readbyqxmd.com/read/29665808/critical-role-of-nlrp3-caspase-1-pathway-in-age-dependent-isoflurane-induced-microglial-inflammatory-response-and-cognitive-impairment
#2
Zhi Wang, Shiyu Meng, Lin Cao, Ying Chen, Zhiyi Zuo, Shuling Peng
BACKGROUND: Elderly patients are more likely to suffer from postoperative cognitive dysfunction (POCD) after surgery and anesthesia. Except for declined organ function, the particular pathogenesis of POCD in elderly patients remains unknown. This study is carried out to determine the critical role of the NOD-like receptor protein 3 (NLRP3)-caspase-1 pathway in isoflurane-induced cognitive impairment. METHODS: Young (6-8 months old) and aged (14 months old) healthy male C57BL/6 mice were exposed to 1...
April 17, 2018: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29665074/parkin-deficiency-modulates-nlrp3-inflammasome-activation-by-attenuating-an-a20-dependent-negative-feedback-loop
#3
François Mouton-Liger, Thibault Rosazza, Julia Sepulveda-Diaz, Amélie Ieang, Sidi-Mohamed Hassoun, Emilie Claire, Graziella Mangone, Alexis Brice, Patrick P Michel, Jean-Christophe Corvol, Olga Corti
Neuroinflammation and mitochondrial dysfunction, key mechanisms in the pathogenesis of Parkinson's disease (PD), are usually explored independently. Loss-of-function mutations of PARK2 and PARK6, encoding the E3 ubiquitin protein ligase Parkin and the mitochondrial serine/threonine kinase PINK1, account for a large proportion of cases of autosomal recessive early-onset PD. PINK1 and Parkin regulate mitochondrial quality control and have been linked to the modulation of innate immunity pathways. We report here an exacerbation of NLRP3 inflammasome activation by specific inducers in microglia and bone marrow-derived macrophages from Park2-/- and Pink1-/- mice...
April 17, 2018: Glia
https://www.readbyqxmd.com/read/29664631/cereal-fiber-ameliorates-high-fat-cholesterol-diet-induced-atherosclerosis-by-modulating-nlrp3-inflammasome-pathway-in-apoe-mice
#4
Ru Zhang, Shufen Han, Zheng Zhang, Weiguo Zhang, Jing Yang, Zhongxiao Wan, Liqiang Qin
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, HFC diet supplemented with 0.8% oat fiber or wheat bran fiber. After 18 weeks of feeding period, serum lipids and inflammatory cytokines were measured...
April 17, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29662840/activation-of-the-nlrp3-inflammasome-pathway-by-uropathogenic-escherichia-coli-is-virulence-factor-dependent-and-influences-colonization-of-bladder-epithelial-cells
#5
Isak Demirel, Alexander Persson, Annelie Brauner, Eva Särndahl, Robert Kruse, Katarina Persson
The NLRP3 inflammasome and IL-1β release have recently been suggested to be important for the progression of urinary tract infection (UTI). However, much is still unknown regarding the interaction of UPEC and the NLRP3 inflammasome. The purpose of this study was to elucidate what virulence factors uropathogenic Escherichia coli (UPEC) use to modulate NLRP3 inflammasome activation and subsequent IL-1β release and the role of NLRP3 for UPEC colonization of bladder epithelial cells. The bladder epithelial cell line 5637, CRISPR/Cas9 generated NLRP3, caspase-1 and mesotrypsin deficient cell lines and transformed primary bladder epithelial cells (HBLAK) were stimulated with UPEC isolates and the non-pathogenic MG1655 strain...
2018: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/29662437/ketogenic-diet-improves-brain-ischemic-tolerance-and-inhibits-nlrp3-inflammasome-activation-by-preventing-drp1-mediated-mitochondrial-fission-and-endoplasmic-reticulum-stress
#6
Min Guo, Xun Wang, Yanxin Zhao, Qi Yang, Hongyan Ding, Qiang Dong, Xingdong Chen, Mei Cui
Background : Neuroprotective effects of ketogenic diets (KD) have been reported in stroke models, and nucleotide-binding domain (NOD)-like receptor protein 3 (NLRP3) inflammasome has also been implicated in the pathogenesis of stroke. This study aimed to investigate the effects of KD on NLRP3 inflammasome and explore the potential molecular mechanisms. Methods : In in vivo study, mice were fed with KD for 3 weeks and then subjected to middle cerebral artery occlusion/reperfusion (MCAO/R)-injury. In in vitro study, SH-SY-5Y cells were treated with β-hydroxybutyrate (BHB) followed by oxygen-glucose deprivation/reoxygenation (OGD/R)...
2018: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/29661823/cutting-edge-blockade-of-inhibitor-of-apoptosis-proteins-sensitizes-neutrophils-to-tnf-but-not-lipopolysaccharide-mediated-cell-death-and-il-1%C3%AE-secretion
#7
Kaiwen W Chen, Kate E Lawlor, Jessica B von Pein, Dave Boucher, Motti Gerlic, Ben A Croker, Jelena S Bezbradica, James E Vince, Kate Schroder
The mammalian inhibitor of apoptosis proteins (IAPs) are key regulators of cell death and inflammation. A major function of IAPs is to block the formation of a cell death-inducing complex, termed the ripoptosome, which can trigger caspase-8-dependent apoptosis or caspase-independent necroptosis. Recent studies report that upon TLR4 or TNF receptor 1 (TNFR1) signaling in macrophages, the ripoptosome can also induce NLRP3 inflammasome formation and IL-1β maturation. Whether neutrophils have the capacity to assemble a ripoptosome to induce cell death and inflammasome activation during TLR4 and TNFR1 signaling is unclear...
April 16, 2018: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29656319/nlrp3-inflammasome-involves-in-the-acute-exacerbation-of-patients-with-chronic-obstructive-pulmonary-disease
#8
Huaying Wang, Chun'er Lv, Shi Wang, Huajuan Ying, Yuesong Weng, Wanjun Yu
The NLR pyrin domain-containing protein 3 (NLRP3) inflammasome, a multi-protein complex, produces the pro-inflammatory cytokines interleukin (IL)-1β and IL-18, which may contribute to the development of airway inflammation in chronic obstructive pulmonary disease (COPD). The aim of this study was to explore the correlation between circulating and local airway NLRP3 inflammasome activation with acute exacerbation of COPD (AECOPD). mRNA levels of NLRP3, Caspase (Casp)-1, apoptosis-associated speck-like protein containing CARD (ASC), IL-18, and IL-1β in peripheral blood mononuclear cells (PBMCs) and bronchial tissues were determined by real-time PCR in 32 smokers, 65 patients with AECOPD, 50 COPD patients in recovery stage, and 30 COPD patients in stable stage...
April 14, 2018: Inflammation
https://www.readbyqxmd.com/read/29655831/corrigendum-to-the-nlrp3-inflammasome-and-the-emerging-role-of-colchicine-to-inhibit-atherosclerosis-associated-inflammation-atherosclerosis-2018-feb-269-262-271
#9
G J Martínez, D S Celermajer, S Patel
No abstract text is available yet for this article.
April 11, 2018: Atherosclerosis
https://www.readbyqxmd.com/read/29655789/interleukin-enhanced-binding-factor-2-interacts-with-nlrp3-to-inhibit-the-nlrp3-inflammasome-activation
#10
Jing Jin, Aixin Li, Wenbiao Wang, Jianguo Wu
The activation of the NLRP3 inflammasome is a key process of host immune response that establishes the first line of defense against pathogen infections and cellular stresses, whereas excessive inflammasome activation may damage the hosts, and thus it must be precisely controlled. However, the mechanism underlying the repression of the NLRP3 inflammasome activation remains largely unknown. In this study, by establishing and using a reconstructed NLRP3 inflammasome activation system, we reveal that the NLRP3 inflammasome activation, pro-caspase-1 cleavage, and pro-interleukin-1β (pro-IL-1β) activation are repressed by the interleukin-enhanced binding factor 2 (ILF2)...
April 12, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29655702/4-2-4-chlorophenyl-1-4-chlorophenyl-amino-ethyl-benzene-1-3-diol-is-a-potential-agent-for-gout-therapy-as-a-dual-inhibitor-of-xod-and-nlrp3
#11
Mengze Zhou, Suning Li, Ling Song, Qinghua Hu, Wentao Liu
BACKGOUND: Gout is an inflammatory arthritis characterized by abrupt self-limiting attacks of inflammation caused by precipitation of monosodium urate crystals (MSU) in the joint. Both anti-hyperuricemia and anti-inflammation could be gout therapeutic strategies, whereas ideal drugs for gout treatment are deficient. PURPOSE: 4-(2-(4-chlorophenyl)-1-((4-chlorophenyl)amino)ethyl)benzene-1, 3-diol (CBED) was obtained from a cluster of deoxybenzoins derivatives synthesized by our research group with potent anti-hyperuricemic and anti-inflammatory activities, which was expected to be a dual inhibitor of xanthine oxidase (XOD) and NOD-like receptor protein 3 (NLRP3)...
March 15, 2018: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/29651937/an-emerging-role-of-endometrial-inflammasome-in-reproduction-new-therapeutic-approaches
#12
Fiorella Di Nicuolo, Monia Specchia, Lorenza Trentavizi, Giovanni Scambia, Nicoletta Di Simone
One of the common complications of pregnancy is spontaneous pregnancy loss which occurs in an estimated 5- 15% of pregnancies. Of all women 1%-5% suffer from recurrent pregnancy loss (RPL). Despite the fact that RPL has been associated to various anatomic, hormonal, immune, hematologic, and genetic defects, in 30% of the patients, screening tests included in the RPL workup may have negative results. Recently, we demonstrated a significant increased activation of endometrial NALP-3 inflammasome, and a caspase-1 dependent secretion of IL-18 and IL-1β in the endometrial tissues obtained from RPL women compared with a fertile women group...
April 12, 2018: Protein and Peptide Letters
https://www.readbyqxmd.com/read/29649568/honokiol-alleviates-the-degeneration-of-intervertebral-disc-via-suppressing-the-activation-of-txnip-nlrp3-inflammasome-signal-pathway
#13
Pan Tang, Jia-Ming Gu, Zi-Ang Xie, Yu Gu, Zhi-Wei Jie, Kang-Mao Huang, Ji-Ying Wang, Shun-Wu Fan, Xue-Sheng Jiang, Zhi-Jun Hu
Intervertebral disc degeneration (IVDD) is a multifactorial disease and responsible for many spine related disorders, causes disability in the workforce and heavy social costs all over the world. Honokiol, a low molecular weight natural product, could penetrate into and distribute in IVDs to achieve therapeutic effect in a rat tail model. Therefore, the present study was undertaken to examine the antiinflammatory, antioxidation and chondroprotective effect of honokiol using nucleus pulposus cells and investigate its mechanisms to provide a new basis for future clinical treatment of IVDD...
April 9, 2018: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/29649530/self-assembled-hyaluronic-acid-nanoparticles-implications-as-a-nanomedicine-for-treatment-of-type-2-diabetes
#14
Jun Gi Rho, Hwa Seung Han, Ji Hye Han, Hansang Lee, Van Quy Nguyen, Wang Hee Lee, Seunglee Kwon, Sungeun Heo, Juhwan Yoon, Han Ho Shin, Eun-Young Lee, Hoin Kang, Siyoung Yang, Eun Kyung Lee, Jae Hyung Park, Wook Kim
Self-assembled hyaluronic acid nanoparticles (HA-NPs) have been extensively investigated for biomedical and pharmaceutical applications owing to their biocompatibility and receptor-binding properties. Here, we report that an empty HA-NP itself not bearing any drug has therapeutic effects on adipose tissue inflammation and insulin resistance. HA-NPs inhibited not only the receptor-mediated internalization of low-molecular-weight (LMW) free HA but also LMW free HA-induced pro-inflammatory gene expression in mouse primary bone marrow-derived macrophages (BMDMs) isolated from wild-type mice, but not in CD44-null (CD44-/-) BMDMs...
April 9, 2018: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/29643819/hmgb1-increases-il-1%C3%AE-production-in-vascular-smooth-muscle-cells-via-nlrp3-inflammasome
#15
Eun Jung Kim, So Youn Park, Seung Eun Baek, Min A Jang, Won Suk Lee, Sun Sik Bae, Koanhoi Kim, Chi Dae Kim
Vascular smooth muscle cells (VSMCs) are the major cell type in the blood vessel walls, and their phenotypic modulation is a key cellular event driving vascular remodeling. Although high mobility group box-1 (HMGB1) plays a pivotal role in inflammatory processes after vascular injuries, the importance of the links between VSMCs, HMGB1 and vascular inflammation has not been clarified. To prove the hypothesis that VSMCs might be active players in vascular inflammation by secreting inflammatory cytokines, we investigated the proinflammatory effects of HMGB1 and its intermediary signaling pathways in VSMCs...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29626160/nlrp3-regulates-macrophage-m2-polarization-through-up-regulation-of-il-4-in-asthma
#16
Ying Liu, Xin Gao, Yi Miao, Yuanyuan Wang, Huan Wang, Rui Zhang, Zhe Cheng, Xi Wang, Xiaogang Jing, Liuqun Jia, Lingling Dai, Meng Liu, Lin An
Activation of nucleotide binding oligomerization domain (Nod)-like receptor (NLR) protein 3 (NLRP3) inflammasome received substantial attention recently in inflammatory diseases. Macrophages contribute to allergic inflammation in asthma. This study was aimed to investigate the effect of NLRP3 inflammasome on the polarization of macrophages. We utilized human primary monocytes and monocyte-derived macrophages to study expression of NLRP3 inflammasome components (NLRP3, ASC, caspase-1) and its downstream cytokine interleukin-1β (IL-1β)...
April 6, 2018: Biochemical Journal
https://www.readbyqxmd.com/read/29625905/myogenic-oxidative-imbalance-interferes-with-antral-motility-in-obese-subjects
#17
Annunziata Scirocco, Lucia Pallotta, Marco Rengo, Antonia Ignazzi, Marilia Carabotti, Alessia Cicenia, Rosa Vona, Piero Chirletti, Maria Antonietta Maselli, Rossella Donghia, Mariagrazia Coluzzi, Paola Matarrese, Gianfranco Silecchia, Carola Severi
BACKGROUND: Obesity is characterized by a systemic low-grade chronic inflammatory oxidative condition that affects vascular and cardiac smooth muscle relaxation. In human antrum, relaxation is mediated by vasoactive intestinal peptide (VIP) through cAMP and cGMP signaling pathways. A genome-wide association study has demonstrated an association between VIP and obesity. AIM: To evaluate smooth muscle activity in human obese antrum, both in in vitro preparations as well as in vivo...
March 14, 2018: Digestive and Liver Disease
https://www.readbyqxmd.com/read/29625348/role-of-dietary-%C3%AE-and-%C3%AE-tocopherol-from-rosa-mosqueta-oil-in-the-prevention-of-alterations-induced-by-high-fat-diet-in-a-murine-model
#18
Gladys Tapia, David Silva, Nalda Romero, Paulina Pettinelli, Camila G Dossi, Manuel de Miguel, Daniel González-Mañán
OBJECTIVE: The aim of this study was to evaluate the contribution of tocopherols present in Rosa mosqueta oil (RM) in the prevention of high-fat diet (HFD)-induced alterations. METHODS: Male C57 BL/6 J mice (n = 9/group) were fed for 12 wk and divided into four groups: control (CD; 10% kcal fat, 20% kcal protein, 70% kcal carbohydrates); HFD (60% as fat, 20% kcal protein, 20% kcal carbohydrates); HFD + RM (0.01 mL/g body weight/d); and HFD + RM- without tocopherols (0...
April 3, 2018: Nutrition
https://www.readbyqxmd.com/read/29622694/airway-epithelial-phosphoinositide-3-kinase-%C3%AE-contributes-to-the-modulation-of-fungi-induced-innate-immune-response
#19
Jae Seok Jeong, Kyung Bae Lee, So Ri Kim, Dong Im Kim, Hae Jin Park, Hern-Ku Lee, Hyung Jin Kim, Seong Ho Cho, Narasaiah Kolliputi, Soon Ha Kim, Yong Chul Lee
BACKGROUND: Respiratory fungal exposure is known to be associated with severe allergic lung inflammation. Airway epithelium is an essential controller of allergic inflammation. An innate immune recognition receptor, nucleotide-binding domain, leucine-rich-containing family, pyrin-domain-containing-3 (NLRP3) inflammasome, and phosphoinositide 3 kinase (PI3K)-δ in airway epithelium are involved in various inflammatory processes. OBJECTIVES: We investigated the role of NLRP3 inflammasome in fungi-induced allergic lung inflammation and examined the regulatory mechanism of NLRP3 inflammasome, focusing on PI3K-δ in airway epithelium...
April 5, 2018: Thorax
https://www.readbyqxmd.com/read/29620210/saikosaponin%C3%A2-d-alleviates-carbon%C3%A2-tetrachloride-induced-acute-hepatocellular-injury-by-inhibiting-oxidative-stress-and-nlrp3-inflammasome-activation-in-the-hl%C3%A2-7702-cell-line
#20
Liubing Lin, Renye Que, Yanting Shen, Yirong Chen, Ni Yan, Yong Li
Saikosaponin‑d (SSd) the primary active component of triterpene saponin derived from Bupleurum falcatum L., possesses anti‑inflammatory and antioxidant properties. The present study aimed to examine the potential therapeutic effects of SSd on carbon tetrachloride (CCl4)‑induced acute hepatocellular injury in the HL‑7702 cell line and its underlying mechanisms. HL‑7702 cells were treated with SSd at different doses (0.5, 1 or 2 µmol/l). Cell viability was determined using an MTT assay. Injury was assessed by the levels of serum alanine aminotransferase (ALT) and aspartate transaminase (AST)...
April 5, 2018: Molecular Medicine Reports
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