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https://www.readbyqxmd.com/read/28430665/p2x7-receptor-and-nlrp3-inflammasome-activation-in-head-and-neck-cancer
#1
Ju Young Bae, Sang-Woo Lee, Yong-Hwan Shin, Jong-Ho Lee, Jeong Won Jahng, Kyungpyo Park
In this study, we investigated purinergic receptor P2X7 and NACHT, LRR and PYD domains-containing protein 3 (NLRP3) inflammasome expressions, and their role in head and neck cancer. We found upregulation of purinergic receptor P2X7 and all NLRP3 inflammasome components in biopsied head and neck squamous cell carcinoma tissues. Similarly, the expression of purinergic receptor P2X7, apoptosis-associated speck-like protein containing CARD, and pro-form caspase 1 in A253 cells derived from epidermoid carcinoma were highly upregulated in comparison to normal Human Salivary Gland cell line...
April 6, 2017: Oncotarget
https://www.readbyqxmd.com/read/28418387/mitochondria-are-the-powerhouses-of-immunity
#2
REVIEW
Evanna L Mills, Beth Kelly, Luke A J O'Neill
Recent evidence indicates that mitochondria lie at the heart of immunity. Mitochondrial DNA acts as a danger-associated molecular pattern (DAMP), and the mitochondrial outer membrane is a platform for signaling molecules such as MAVS in RIG-I signaling, and for the NLRP3 inflammasome. Mitochondrial biogenesis, fusion and fission have roles in aspects of immune-cell activation. Most important, Krebs cycle intermediates such as succinate, fumarate and citrate engage in processes related to immunity and inflammation, in both innate and adaptive immune cells...
April 18, 2017: Nature Immunology
https://www.readbyqxmd.com/read/28403142/melatonin-protects-rats-from-radiotherapy-induced-small-intestine-toxicity
#3
Beatriz Fernández-Gil, Ahmed E Abdel Moneim, Francisco Ortiz, Ying-Qiang Shen, Viviana Soto-Mercado, Miguel Mendivil-Perez, Ana Guerra-Librero, Darío Acuña-Castroviejo, María M Molina-Navarro, José M García-Verdugo, Ramy K A Sayed, Javier Florido, Juan D Luna, Luis Carlos López, Germaine Escames
Radiotherapy-induced gut toxicity is among the most prevalent dose-limiting toxicities following radiotherapy. Prevention of radiation enteropathy requires protection of the small intestine. However, despite the prevalence and burden of this pathology, there are currently no effective treatments for radiotherapy-induced gut toxicity, and this pathology remains unclear. The present study aimed to investigate the changes induced in the rat small intestine after external irradiation of the tongue, and to explore the potential radio-protective effects of melatonin gel...
2017: PloS One
https://www.readbyqxmd.com/read/28402258/cd200fc-reduces-lps-induced-il-1%C3%AE-activation-in-human-cervical-cancer-cells-by-modulating-tlr4-nf-%C3%AE%C2%BAb-and-nlrp3-inflammasome-pathway
#4
Aiqin He, Jia Shao, Yu Zhang, Hong Lu, Zhijun Wu, Yunzhao Xu
Chronic inflammation plays an important role in tumorigenesis of cervical cancer. CD200Fc, a CD200R1 agonist, has been found to have anti-inflammatory effects in autoimmune diseases and neuro-degeneration. However, the anti-inflammatory effect of CD200Fc on cervical cancer has not yet to be completely understood. This study investigated the anti-inflammatory effects and mechanisms of CD200Fc in LPS-induced human SiHa cells and Caski cells. SiHa cells and Caski cells were stimulated with 40 μg/ml LPS under different concentrations of CD200Fc for 90 min or 12 hours...
March 27, 2017: Oncotarget
https://www.readbyqxmd.com/read/28380426/huaier-aqueous-extract-protects-against-dextran-sulfate-sodium-induced-experimental-colitis-in-mice-by-inhibiting-nlrp3-inflammasome-activation
#5
Lijuan Wang, Zhongxia Yu, Chao Wei, Li Zhang, Hui Song, Bing Chen, Qifeng Yang
The use of Trametes robiniophila Murr. (Huaier) as a complementary therapy for cancer has recently become increasingly common in China. However, whether Huaier can regulate host immune responses, especially innate immunity, remains largely unknown. The NLRP3 inflammasome is a multimeric complex consisting of NLRP3, ASC and caspase-1. NLRP3 inflammasomes respond to a variety of endogenous (damage-associated molecular patterns) and exogenous (pathogen-associated molecular patterns) stimuli, and play crucial roles in host defense against pathogens and multiple diseases such as ulcerative colitis (UC)...
March 23, 2017: Oncotarget
https://www.readbyqxmd.com/read/28360909/inflammasomes-in-inflammation-induced-cancer
#6
REVIEW
Chu Lin, Jun Zhang
The inflammasome is an important multiprotein complex that functions during inflammatory immune responses. The activation of inflammasome will lead to the autoactivation of caspase-1 and subsequent cleavage of proIL-1β and proIL-18, which are key sources of inflammatory manifestations. Recently, the roles of inflammasomes in cancers have been extensively explored, especially in inflammation-induced cancers. In different and specific contexts, inflammasomes exhibit distinct and even contrasting effects in cancer development...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28279687/airborne-particulate-matter-in-vitro-exposure-induces-cytoskeleton-remodeling-through-activation-of-the-rock-mypt1-mlc-pathway-in-a549-epithelial-lung-cells
#7
Yolanda I Chirino, Claudia María García-Cuellar, Carlos García-García, Ernesto Soto-Reyes, Álvaro Román Osornio-Vargas, Luis A Herrera, Alejandro López-Saavedra, Javier Miranda, Raúl Quintana-Belmares, Irma Rosas Pérez, Yesennia Sánchez-Pérez
Airborne particulate matter with an aerodynamic diameter ≤10μm (PM10) is considered a risk factor for the development of lung cancer. Little is known about the cellular mechanisms by which PM10 is associated with cancer, but there is evidence that its exposure can lead to an acquired invasive phenotype, apoptosis evasion, inflammasome activation, and cytoskeleton remodeling in lung epithelial cells. Cytoskeleton remodeling occurs through actin stress fiber formation, which is partially regulated through ROCK kinase activation, we aimed to investigate if this protein was activated in response to PM10 exposure in A549 lung epithelial cells...
March 6, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/28267621/targeting-hepatic-macrophages-to-treat-liver-diseases
#8
REVIEW
Frank Tacke
Our view on liver macrophages in the context of health and disease has been reformed by the recognition of a remarkable heterogeneity of phagocytes in the liver. Liver macrophages consist of ontogenically distinct populations termed Kupffer cells and monocyte-derived macrophages. Kupffer cells are self-renewing, resident and principally non-migratory phagocytes, serving as sentinels for liver homeostasis. Liver injury triggers Kupffer cell activation, leading to inflammatory cytokine and chemokine release. This fosters the infiltration of monocytes into liver that give rise to large numbers of inflammatory monocyte-derived macrophages...
March 3, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/28263976/nlrp1-promotes-tumor-growth-by-enhancing-inflammasome-activation-and-suppressing-apoptosis-in-metastatic-melanoma
#9
Z Zhai, W Liu, M Kaur, Y Luo, J Domenico, J M Samson, Y G Shellman, D A Norris, C A Dinarello, R A Spritz, M Fujita
Inflammasomes are mediators of inflammation, and constitutively activated NLRP3 inflammasomes have been linked to interleukin-1β (IL-1β)-mediated tumorigenesis in human melanoma. Whereas NLRP3 regulation of caspase-1 activation requires the adaptor protein ASC (apoptosis-associated speck-like protein containing a CARD (caspase recruitment domain)), caspase-1 activation by another danger-signaling sensor NLRP1 does not require ASC because NLRP1 contains a C-terminal CARD domain that facilitates direct caspase-1 activation via CARD-CARD interaction...
March 6, 2017: Oncogene
https://www.readbyqxmd.com/read/28260512/polypurine-reverse-hoogsteen-hairpins-as-a-gene-silencing-tool-for-cancer
#10
Carlos J Ciudad, Laura Rodríguez, Xenia Villalobos, Alex J Félix, Véronica Noé
Polypurine reverse Hoogsteen (PPRH) molecules are DNA hairpins formed by two polypurine strands running in an antiparallel orientation and containing no nucleotide modifications. The two strands, linked by a pentathymidine loop, are bound through intramolecular reverse Hoogsteen bonds. Then, PPRHs can bind by Watson-Crick bonds to their corresponding polypyrimidine target in the dsDNA provoking a displacement of the polypurine strand of the duplex. We described the effect and mechanisms of action of PPRHs in cells using PPRHs designed against the template and coding strands of the dhfr gene...
March 1, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28243117/aim2-regulates-viability-and-apoptosis-in-human-colorectal-cancer-cells-via-the-pi3k-akt-pathway
#11
Jianjun Chen, Zhenjun Wang, Sanshui Yu
Absent in melanoma 2 (AIM2) plays an important role in innate immunity as a DNA sensor in the cytoplasm by triggering the assembly of an AIM2 inflammasome that results in caspase-1-mediated inflammatory responses and cell death. In recent years, studies have indicated that AIM2 can suppress cancer cell proliferation, and mutations in the gene encoding AIM2 are frequently identified in patients with colorectal cancer (CRC). However, the mechanism by which AIM2 restricts tumor growth remains unclear. We reconstructed AIM2 expression in HCT116 CRC cells by lentivirus transfection...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28218280/mangiferin-from-pueraria-tuberosa-reduces-inflammation-via-inactivation-of-nlrp3-inflammasome
#12
Ramakrishna K Bulugonda, Kotha Anil Kumar, D Gangappa, Harshavardhan Beeda, Gundala Harold Philip, Dowlathabad Muralidhara Rao, Syed M Faisal
Recent reports have demonstrated the role of phyto-constituents in modulating inflammatory responses. Mangiferin isolated from Mangifera indica is known to induce potent anti-oxidative, anti-diabetic and anti-inflammatory activity. However, the molecular mechanism of its anti-inflammatory activity is not properly understood. In this study we have isolated Mangiferin from the tubers of Pueraria tuberosa (PT-Mangiferin) and analysed the mechanism of its potent anti-inflammatory effects in LPS stimulated RAW 264...
February 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28216434/human-nacht-lrr-and-pyd-domain-containing-protein-3-nlrp3-inflammasome-activity-is-regulated-by-and-potentially-targetable-through-bruton-tyrosine-kinase
#13
Xiao Liu, Tica Pichulik, Olaf-Oliver Wolz, Truong-Minh Dang, Andrea Stutz, Carly Dillen, Magno Delmiro Garcia, Helene Kraus, Sabine Dickhöfer, Ellen Daiber, Lisa Münzenmayer, Silke Wahl, Nikolaus Rieber, Jasmin Kümmerle-Deschner, Amir Yazdi, Mirita Franz-Wachtel, Boris Macek, Markus Radsak, Sebastian Vogel, Berit Schulte, Juliane Sarah Walz, Dominik Hartl, Eicke Latz, Stephan Stilgenbauer, Bodo Grimbacher, Lloyd Miller, Cornelia Brunner, Christiane Wolz, Alexander N R Weber
BACKGROUND: The Nod-like receptor NACHT, LRR, and PYD domain-containing protein 3 (NLRP3) and Bruton tyrosine kinase (BTK) are protagonists in innate and adaptive immunity, respectively. NLRP3 senses exogenous and endogenous insults, leading to inflammasome activation, which occurs spontaneously in patients with Muckle-Wells syndrome; BTK mutations cause the genetic immunodeficiency X-linked agammaglobulinemia (XLA). However, to date, few proteins that regulate NLRP3 inflammasome activity in human primary immune cells have been identified, and clinically promising pharmacologic targeting strategies remain elusive...
February 16, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28212736/tap73-upregulates-il-1%C3%AE-in-cancer-cells-potential-biomarker-in-lung-and-breast-cancer
#14
Polina Vikhreva, Varvara Petrova, Tarik Gokbulut, Ilias Pestlikis, Mara Mancini, Nicola Di Daniele, Richard A Knight, Gerry Melino, Ivano Amelio
p73 is a transcription factor belonging to the p53 tumour suppressor family. p73(-/-) mice exhibit a range of phenotypes including neurological, reproductive and inflammatory defects. Although the role of p73 in the control of genomic stability explains part of these phenotypes, a clear mechanism of how p73 participates in the inflammatory response is still elusive. Interleukin-1β (IL-1β) has a crucial role in mediating the inflammatory response. Because of its high potency to induce inflammation, the activation and secretion of IL-1β is tightly regulated by large protein complexes, named inflammasomes...
January 15, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28173682/-research-progress-in-inflammasome-and-colorectal-cancer
#15
J Q Feng, M B Feng, F Y Xu
No abstract text is available yet for this article.
February 8, 2017: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
https://www.readbyqxmd.com/read/28160865/isorhamnetin-and-hyperoside-derived-from-water-dropwort-inhibits-inflammasome-activation
#16
Huijeong Ahn, Geun-Shik Lee
BACKGROUND: Water dropwort (Oenanthe javanica), an umbelliferous plant, has been reported as hypolipidemic, antiplatelet, antitumor, or immune-stimulating agents and it has been suggested to cure cardiovascular disease and cancer. PURPOSE: Present study aimed to evaluate the effect of the extracts of water dropwort (EWD) and its pharmacological molecules, hyperoside and isorhamnetin, on inflammatory response, especially inflammasome activation. STUDY DESIGN/METHODS: The anti-inflammasome properties of EWD, isorhamnetin, and hyperoside were elucidated by human and mouse macrophages...
January 15, 2017: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/28155620/nlrp3-inhibitors-as-potential-therapeutic-agents-for-treatment-of-inflammatory-bowel-disease
#17
Agampodi Promoda Perera, Dale Kunde, Rajaraman Eri
BACKGROUND: Inflammatory bowel disease (IBD) is a group of intestinal disorders characterised by chronic relapsing inflammation of the small intestine and colon. IBD manifests as either ulcerative colitis or Crohn's disease and increases the risk of developing colorectal cancer. METHODS: Here, we have reviewed current treatment regimen for IBD utilising anti-inflammatory drugs, immune system suppressors and antibiotics or a combination of these. However, these therapeutics lead to a number of adverse effects, remission or significant non-responsiveness creating an urgent need to develop potent drugs with novel mechanisms of action for IBD...
February 1, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28147282/sr-b1-is-a-silica-receptor-that-mediates-canonical-inflammasome-activation
#18
Misato Tsugita, Nobuyuki Morimoto, Manabu Tashiro, Kengo Kinoshita, Masafumi Nakayama
The inhalation of silica dust is associated with fibrosis and lung cancer, which are triggered by macrophage inflammatory responses; however, how macrophages recognize silica remains largely unknown. Here, we identify by functional expression cloning the class B scavenger receptor SR-B1 as a silica receptor. Through an extracellular α-helix, both mouse and human SR-B1 specifically recognized amorphous and crystalline silica, but not titanium dioxide nanoparticles, latex nanoparticles, or monosodium urate crystals, although all particles exhibited negative surface potentials...
January 31, 2017: Cell Reports
https://www.readbyqxmd.com/read/28112987/photoprotective-potential-of-glycolic-acid-by-reducing-nlrc4-and-aim2-inflammasome-complex-proteins-in-uvb-radiation-induced-normal-human-epidermal-keratinocytes-and-mice
#19
Sung-Jen Hung, Sheau-Chung Tang, Pei-Yun Liao, Jheng-Siang Ge, Yu-Ping Hsiao, Jen-Hung Yang
Exposure to UVB radiation induces inflammation and free radical-mediated oxidative stress through reactive oxygen species (ROS) that play a crucial role in the induction of skin cancer. Glycolic acid (GA) is frequently used in cosmetics and dermatology. The aim of the study was to analyze the photoprotective mechanisms through which GA retards UVB-induced ROS accumulation and inflammation in normal human epidermal keratinocytes (NHEKs) and mice skin, respectively. NHEK cell line and C57BL/6J mice were treated with GA (0...
February 2017: DNA and Cell Biology
https://www.readbyqxmd.com/read/28110208/inflammatory-pathway-genes-associated-with-inter-individual-variability-in-the-trajectories-of-morning-and-evening-fatigue-in-patients-receiving-chemotherapy
#20
Fay Wright, Marilyn Hammer, Steven M Paul, Bradley E Aouizerat, Kord M Kober, Yvette P Conley, Bruce A Cooper, Laura B Dunn, Jon D Levine, Gail DEramo Melkus, Christine Miaskowski
Fatigue, a highly prevalent and distressing symptom during chemotherapy (CTX), demonstrates diurnal and interindividual variability in severity. Little is known about the associations between variations in genes involved in inflammatory processes and morning and evening fatigue severity during CTX. The purposes of this study, in a sample of oncology patients (N=543) with breast, gastrointestinal (GI), gynecological (GYN), or lung cancer who received two cycles of CTX, were to determine whether variations in genes involved in inflammatory processes were associated with inter-individual variability in initial levels as well as in the trajectories of morning and evening fatigue...
March 2017: Cytokine
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