keyword
MENU ▼
Read by QxMD icon Read
search

pyroptosis

keyword
https://www.readbyqxmd.com/read/29791511/caspase-11-dependent-pyroptosis-of-lung-epithelial-cells-protects-from-melioidosis-while-caspase-1-mediates-macrophage-pyroptosis-and-production-of-il-18
#1
Jinyong Wang, Manoranjan Sahoo, Louis Lantier, Jonathan Warawa, Hector Cordero, Kelly Deobald, Fabio Re
Infection with Burkholderia pseudomallei or B. thailandensis triggers activation of the NLRP3 and NLRC4 inflammasomes leading to release of IL-1β and IL-18 and death of infected macrophages by pyroptosis, respectively. The non-canonical inflammasome composed of caspase-11 is also activated by these bacteria and provides protection through induction of pyroptosis. The recent generation of bona fide caspase-1-deficient mice allowed us to reexamine in a mouse model of pneumonic melioidosis the role of caspase-1 independently of caspase-11 (that was also absent in previously generated Casp1-/- mice)...
May 23, 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29791256/nlrp6-induces-pyroptosis-by-activation-of-caspase-1-in-gingival-fibroblasts
#2
W Liu, J Liu, W Wang, Y Wang, X Ouyang
NLRP6, a member of the nucleotide-binding domain, leucine-rich repeat-containing (NLR) innate immune receptor family, has been reported to participate in inflammasome formation. Activation of inflammasome triggers a caspase-1-dependent programming cell death called pyroptosis. However, whether NLRP6 induces pyroptosis has not been investigated. In this study, we showed that NLRP6 overexpression activated caspase-1 and gasdermin-D and then induced pyroptosis of human gingival fibroblasts, resulting in release of proinflammatory mediators interleukin (IL)-1β and IL-18...
May 1, 2018: Journal of Dental Research
https://www.readbyqxmd.com/read/29789550/neutrophil-extracellular-traps-promote-macrophage-pyroptosis-in-sepsis
#3
Linsong Chen, Yanfeng Zhao, Dengming Lai, Peng Zhang, Yang Yang, Yuehua Li, Ke Fei, Gening Jiang, Jie Fan
In response to infection, polymorphonuclear neutrophils (PMN) are recruited in the infectious sites, and employ three major strategies to fight against the microbes including phagocytosis, degranulation, and neutrophil extracellular traps (NETs). NETs are a meshwork of chromatin fibers mixed with granule-derived antimicrobial peptides and enzymes, which trap and kill the bacteria extracellularly. In this study, by using a mouse sepsis model, we identified a novel mechanism by which NETs induce macrophage (Mϕ) pyroptosis, a caspase-1-dependent regulated cell death...
May 22, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29780528/synthetic-glycan-based-tlr4-agonists-targeting-caspase-4-11-for-the-development-of-adjuvants-and-immunotherapeutics
#4
Florian Adanitsch, Jianjin Shi, Feng Shao, Rudi Beyaert, Holger Heine, Alla Zamyatina
Gram-negative bacterial lipopolysaccharide (LPS)-induced Toll-like receptor 4 (TLR4) mediated pro-inflammatory signaling plays a key role in immunoprotection against infectious challenges and boosts adaptive immunity, whereas the activation of the cytosolic LPS receptor caspase-4/11 leads to cell death by pyroptosis and is deeply implicated in the development of sepsis. Despite tremendous advances in the understanding of the LPS-TLR4 interaction, predictably regulated TLR4 activation has not yet been achieved...
April 28, 2018: Chemical Science
https://www.readbyqxmd.com/read/29775594/embryogenesis-and-adult-life-in-the-absence-of-intrinsic-apoptosis-effectors-bax-bak-and-bok
#5
Francine F S Ke, Hannah K Vanyai, Angus D Cowan, Alex R D Delbridge, Lachlan Whitehead, Stephanie Grabow, Peter E Czabotar, Anne K Voss, Andreas Strasser
Intrinsic apoptosis, reliant on BAX and BAK, has been postulated to be fundamental for morphogenesis, but its precise contribution to this process has not been fully explored in mammals. Our structural analysis of BOK suggests close resemblance to BAX and BAK structures. Notably, Bok-/- Bax-/- Bak-/- animals exhibited more severe defects and died earlier than Bax-/- Bak-/- mice, implying that BOK has overlapping roles with BAX and BAK during developmental cell death. By analyzing Bok-/- Bax-/- Bak-/- triple-knockout mice whose cells are incapable of undergoing intrinsic apoptosis, we identified tissues that formed well without this process...
May 17, 2018: Cell
https://www.readbyqxmd.com/read/29774640/regulatory-roles-of-flavonoids-on-inflammasome-activation-during-inflammatory-responses
#6
REVIEW
Young-Su Yi
Inflammation is an innate immune response to noxious stimuli to protect the body from pathogens and dangers. Inflammatory responses consist of two main steps: priming and triggering. In priming, inflammatory cells increase expressions of inflammatory molecules, while in triggering, inflammasomes are activated, resulting in cell death and pro-inflammatory cytokine secretion. Inflammasomes are protein complexes comprising intracellular pattern recognition receptors (PRRs) (e.g. nucleotide-binding oligomerization domain-like receptors (NLRs), absent in melanoma 2 (AIM2), and caspases-4/5/11) and pro-caspase-1 with or without a bipartite adaptor molecule ASC...
May 17, 2018: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/29766811/p2x7-receptor-associated-programmed-cell-death-in-the-pathophysiology-of-hemorrhagic-stroke
#7
Hengli Zhao, Yujie Chen, Hua Feng
Hemorrhagic stroke is a life-threatening disease characterized by a sudden rupture of cerebral blood vessels, and cell death is widely believed to occur after exposure to blood metabolites or subsequently damaged cells. Recently, programmed cell death, such as apoptosis, autophagy, necroptosis, pyroptosis, and ferroptosis, has been demonstrated to play crucial roles in the pathophysiology of stroke. However, the detailed mechanisms of these novel kinds of cell death are still unclear. The P2X7 receptor, previously known for its cytotoxic activity, is an ATP-gated, non-selective cation channel that belongs to the family of ionotropic P2X receptors...
May 15, 2018: Current Neuropharmacology
https://www.readbyqxmd.com/read/29765216/dysfunction-of-various-organelles-provokes-multiple-cell-death-after-quantum-dot-exposure
#8
REVIEW
Yan Wang, Meng Tang
Quantum dots (QDs) are different from the materials with the micrometer scale. Owing to the superiority in fluorescence and optical stability, QDs act as possible diagnostic and therapeutic tools for application in biomedical field. However, potential threats of QDs to human health hamper their wide utilization in life sciences. It has been reported that oxidative stress and inflammation are involved in toxicity caused by QDs. Recently, accumulating research unveiled that disturbance of subcellular structures plays a magnificent role in cytotoxicity of QDs...
2018: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29743559/antigen-specific-primed-cytotoxic-t-cells-eliminate-tumour-cells-in-vivo-and-prevent-tumour-development-regardless-of-the-presence-of-anti-apoptotic-mutations-conferring-drug-resistance
#9
Paula Jaime-Sánchez, Elena Catalán, Iratxe Uranga-Murillo, Nacho Aguiló, Llipsy Santiago, Pilar M Lanuza, Diego de Miguel, Maykel A Arias, Julián Pardo
Cytotoxic CD8+ T (Tc) cells are the main executors of transformed and cancer cells during cancer immunotherapy. The latest clinical results evidence a high efficacy of novel immunotherapy agents that modulate Tc cell activity against bad prognosis cancers. However, it has not been determined yet whether the efficacy of these treatments can be affected by selection of tumoural cells with mutations in the cell death machinery, known to promote drug resistance and cancer recurrence. Here, using a model of prophylactic tumour vaccination based on the LCMV-gp33 antigen and the mouse EL4 T lymphoma, we analysed the molecular mechanism employed by Tc cells to eliminate cancer cells in vivo and the impact of mutations in the apoptotic machinery on tumour development...
May 9, 2018: Cell Death and Differentiation
https://www.readbyqxmd.com/read/29743359/influenza-a-virus-infection-triggers-pyroptosis-and-apoptosis-of-respiratory-epithelial-cells-through-type-i-ifn-signaling-pathway-in-a-mutually-exclusive-manner
#10
SangJoon Lee, Mikako Hirohama, Masayuki Noguchi, Kyosuke Nagata, Atsushi Kawaguchi
Respiratory epithelial cell death by influenza virus infection is responsible for induction of inflammatory responses, but the exact cell death mechanism is not understood. Here we showed that influenza virus infection induces apoptosis and pyroptosis in normal or precancerous human bronchial epithelial cells. Apoptosis was induced only in malignant tumor cells infected with influenza virus. In PL16T human precancerous respiratory epithelial cells, the number of apoptotic cells increased at early phases of infection, but pyroptotic cells were observed at late phases of infection...
May 9, 2018: Journal of Virology
https://www.readbyqxmd.com/read/29734519/immune-complex-induced-neutrophil-functions-a-focus-on-cell-death
#11
REVIEW
Sonja Vermeren, Utsa Karmakar, Adriano G Rossi
Neutrophils are amongst the first cells to be recruited to sites of infection or trauma. Neutrophil functional responsiveness is tightly regulated by many agents including soluble mediators and immune complexes. These immune cells can generate reactive oxygen species and degranulate to release abundant cytotoxic products, making them efficient at killing invading microorganisms such as bacteria and fungi. If neutrophil function is dysregulated, however, these cells have the potential to cause unwanted host tissue damage as exemplified by pathological and chronic inflammatory conditions...
May 7, 2018: European Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29734365/nod2-is-required-for-antigen-specific-humoral-responses-against-antigens-orally-delivered-using-a-recombinant-lactobacillus-vaccine-platform
#12
Sara A Bumgardner, Lin Zhang, Alora S LaVoy, Barbara Andre, Chad B Frank, Akinobu Kajikawa, Todd R Klaenhammer, Gregg A Dean
Safe and efficacious orally-delivered mucosal vaccine platforms are desperately needed to combat the plethora of mucosally transmitted pathogens. Lactobacillus spp. have emerged as attractive candidates to meet this need and are known to activate the host innate immune response in a species- and strain-specific manner. For selected bacterial isolates and mutants, we investigated the role of key innate immune pathways required for induction of innate and subsequent adaptive immune responses. Co-culture of murine macrophages with L...
2018: PloS One
https://www.readbyqxmd.com/read/29725262/simvastatin-suppresses-proliferation-and-migration-in-non-small-cell-lung-cancer-via-pyroptosis
#13
Fengjiao Wang, Wei Liu, Jinfeng Ning, Junfeng Wang, Yaoguo Lang, Xiangyuan Jin, Kaibin Zhu, Xiuyun Wang, Xiaoguang Li, Fan Yang, Jianqun Ma, Shidong Xu
Pyroptosis is a form of caspase-1-dependent programmed cell death with anti-tumor properties, but the underlying molecular mechanisms are not fully understood. The results of our study showed that the antihyperlipidemic drug simvastatin induced pyroptosis in non-small cell lung cancer (NSCLC) cell lines and a xenograft mouse model. Inhibition of pyroptosis attenuated the effects of simvastatin on tumor cell viability and migration. These data suggest that simvastatin may induce pyroptosis, thereby potentially serving as a novel therapeutic agent for NSCLC...
2018: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/29724886/pyroptosis-in-pterygium-pathogenesis
#14
Naiyu Sun, Hong Zhang
BACKGROUND:   Pterygium is a common ocular disease characterized by proliferating fibrovascular tissue. Pyroptosis, a recently discovered programmed cell death, is known to be associated with oxidative stress, one of the main causes of pterygia. Here, we aimed to study the role of pyroptosis in pterygium pathogenesis. METHODS:  The expression of NLRP3, caspase-1, IL-18 and IL-1β was analyzed in 60 human pterygium tissues and 60 human conjunctival epithelium tissues using qRT-PCR, western blot analysis...
May 3, 2018: Bioscience Reports
https://www.readbyqxmd.com/read/29723525/alk-is-required-for-nlrp3-inflammasome-activation-in-macrophages
#15
Bibo Zhang, Wei Wei, Jiaming Qiu
The NLRP3 inflammasome is a key mediator of host immune responses through the induction of pyroptosis and the release of cytokines. Although the pathologic role of inflammasome in infection and sterile inflammation is well known, the mechanism and regulation of NLRP3 inflammasome activation remains obscure. Here, we report that anaplastic lymphoma kinase (ALK) is a novel regulator of NLRP3 inflammasome activation in macrophages. Pharmacologic or genetic inhibition of ALK through targeted drugs (ceritinib and lorlatinib) or RNAi blocked extracellular ATP-induced NLRP3 inflammasome activation in macrophages...
April 30, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29722780/mesoporous-silica-nanoparticles-induced-hepatotoxicity-via-nlrp3-inflammasome-activation-and-caspase-1-dependent-pyroptosis
#16
Xuyao Zhang, Jingyun Luan, Wei Chen, Jiajun Fan, Yanyang Nan, Yichen Wang, Yanxu Liang, Guangxun Meng, Dianwen Ju
Increased biomedical applications of mesoporous silica nanoparticles (MSNs) raise considerable attention concerning their toxicological effects; the toxicities of MSNs are still undefined and the underlying mechanisms are unknown. We conducted this study to determine the hepatotoxicity of continuous administration of MSNs and the potential mechanisms. MSNs caused cytotoxicity in hepatic L02 cells in a dose- and time-dependent manner. Then, MSNs were shown to elicit NOD-like receptor protein 3 (NLRP3) inflammasome activation in hepatocytes, leading to caspase-1-dependent pyroptosis, a novel manner of cell death...
May 3, 2018: Nanoscale
https://www.readbyqxmd.com/read/29720269/acidic-preconditioning-of-endothelial-colony-forming-cells-ecfc-promote-vasculogenesis-under-proinflammatory-and-high-glucose-conditions-in-vitro-and-in-vivo
#17
Hebe Agustina Mena, Paula Romina Zubiry, Blandine Dizier, Mirta Schattner, Catherine Boisson-Vidal, Soledad Negrotto
BACKGROUND: We have previously demonstrated that acidic preconditioning of human endothelial colony-forming cells (ECFC) increased proliferation, migration, and tubulogenesis in vitro, and increased their regenerative potential in a murine model of hind limb ischemia without baseline disease. We now analyze whether this strategy is also effective under adverse conditions for vasculogenesis, such as the presence of ischemia-related toxic molecules or diabetes, one of the main target diseases for cell therapy due to their well-known healing impairments...
May 2, 2018: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29706799/recent-advances-in-the-molecular-mechanisms-underlying-pyroptosis-in-sepsis
#18
REVIEW
Yu-Lei Gao, Jian-Hua Zhai, Yan-Fen Chai
Sepsis is recognized as a life-threatening organ dysfunctional disease that is caused by dysregulated host responses to infection. Up to now, sepsis still remains a dominant cause of multiple organ dysfunction syndrome (MODS) and death among severe condition patients. Pyroptosis, originally named after the Greek words " pyro " and " ptosis " in 2001, has been defined as a specific programmed cell death characterized by release of inflammatory cytokines. During sepsis, pyroptosis is required for defense against bacterial infection because appropriate pyroptosis can minimize tissue damage...
2018: Mediators of Inflammation
https://www.readbyqxmd.com/read/29692782/nod-like-receptor-protein-3-inflammasome-dependent-il-1%C3%AE-accelerated-cona-induced-hepatitis
#19
Jingyun Luan, Xuyao Zhang, Shaofei Wang, Yubin Li, Jiajun Fan, Wei Chen, Wenjing Zai, Sijia Wang, Yichen Wang, Mingkuan Chen, Guangxun Meng, Dianwen Ju
Autoimmune hepatitis (AIH) is a progressive inflammatory disorders of unknown etiology, characterized by immune-mediated destruction of hepatocytes and massive production of cytokines. Interleukin-1β is a pleiotropic proinflammatory cytokine and well known to be critical in a variety of autoimmune diseases. However, the role of interleukin-1β (IL-1β) in AIH is still indistinct. Here, we first investigated the significance of NOD-like receptor protein 3 (NLRP3) inflammasome-dependent IL-1β in the pathogenesis of AIH with a murine model of immune-mediated hepatitis induced by Concanavalin A (ConA)...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29678952/subverting-the-mechanisms-of-cell-death-flavivirus-manipulation-of-host-cell-responses-to-infection
#20
REVIEW
Elisa Vicenzi, Isabel Pagani, Silvia Ghezzi, Sarah L Taylor, Timothy R Rudd, Marcelo A Lima, Mark A Skidmore, Edwin A Yates
Viruses exploit host metabolic and defence machinery for their own replication. The flaviviruses, which include Dengue (DENV), Yellow Fever (YFV), Japanese Encephalitis (JEV), West Nile (WNV) and Zika (ZIKV) viruses, infect a broad range of hosts, cells and tissues. Flaviviruses are largely transmitted by mosquito bites and humans are usually incidental, dead-end hosts, with the notable exceptions of YFV, DENV and ZIKV. Infection by flaviviruses elicits cellular responses including cell death via necrosis, pyroptosis (involving inflammation) or apoptosis (which avoids inflammation)...
April 20, 2018: Biochemical Society Transactions
keyword
keyword
99097
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"