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https://www.readbyqxmd.com/read/28626232/the-rip3-rip1-nf-%C3%AE%C2%BAb-signaling-axis-is-dispensable-for-necroptotic-cells-to-elicit-cross-priming-of-cd8-t-cells
#1
Junming Ren, Xian Jia, Yihao Zhao, Wenke Shi, Jiongcong Lu, Yingying Zhang, Jianfeng Wu, Bo Liang, Rui Wu, Guo Fu, Jiahuai Han
No abstract text is available yet for this article.
June 19, 2017: Cellular & Molecular Immunology
https://www.readbyqxmd.com/read/28592892/noncanocial-cell-death-program-independent-of-caspase-activation-cascade-and-necroptotic-modules-is-elicited-by-loss-of-tgf%C3%AE-activated-kinase-1
#2
September R Mihaly, Yosuke Sakamachi, Jun Ninomiya-Tsuji, Sho Morioka
Programmed cell death (PCD) occurs in several forms including apoptosis and necroptosis. Apoptosis is executed by the activation of caspases, while necroptosis is dependent on the receptor interacting protein kinase 3 (RIPK3). Precise control of cell death is crucial for tissue homeostasis. Indeed, necroptosis is triggered by caspase inhibition to ensure cell death. Here we identified a previously uncharacterized cell death pathway regulated by TAK1, which is unexpectedly provoked by inhibition of caspase activity and necroptosis cascades...
June 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28592284/biogenic-selenium-nanoparticles-induce-ros-mediated-necroptosis-in-pc-3-cancer-cells-through-tnf-activation
#3
Praveen Sonkusre, Swaranjit Singh Cameotra
BACKGROUND: Selenium is well documented to inhibit cancer at higher doses; however, the mechanism behind this inhibition varies widely depending on the cell type and selenium species. Previously, we have demonstrated that Bacillus licheniformis JS2 derived biogenic selenium nanoparticles (SeNPs) induce non-apoptotic cell death in prostate adenocarcinoma cell line, PC-3, at a minimal concentration of 2 µg Se/ml, without causing toxicity to the primary cells. However, the mechanism behind its anticancer activity was elusive...
June 7, 2017: Journal of Nanobiotechnology
https://www.readbyqxmd.com/read/28579326/rip1-rip3-drp1-pathway-regulates-nlrp3-inflammasome-activation-following-subarachnoid-hemorrhage
#4
Keren Zhou, Ligen Shi, Zhen Wang, Jingyi Zhou, Anatol Manaenko, Cesar Reis, Sheng Chen, Jianmin Zhang
The NLRP3 inflammasome functions as a crucial component of the inflammatory response in early brain injury (EBI) after subarachnoid hemorrhage (SAH). However, the mechanisms underlying the activation of NLRP3 inflammasome has not been well elucidated. In this study, we hypothesized the RIP1-RIP3-DRP1 pathway was involved in the activation of the NLRP3 inflammasome following SAH. SAH was induced by endovascular perforation in rats. Necrostatin-1 (Nec-1) or mitochondrial division inhibitor (Mdivi-1) was administered 1h after SAH by intraperitoneal injection...
June 2, 2017: Experimental Neurology
https://www.readbyqxmd.com/read/28574501/rip1-kinase-activity-dependent-roles-in-embryonic-development-of-fadd-deficient-mice
#5
Yongbo Liu, Cunxian Fan, Yifan Zhang, Xianjun Yu, Xiaoxia Wu, Xixi Zhang, Qun Zhao, Haiwei Zhang, Qun Xie, Ming Li, Xiaoming Li, Qiurong Ding, Hao Ying, Dali Li, Haibing Zhang
RIP1 is an essential regulator of TNF-induced signaling complexes mediating NF-κB activation, apoptosis and necroptosis. Loss of Rip1 rescues the embryonic lethality of Fadd or Caspase-8-deficient mice, even though the double knockout mice die shortly after birth like Rip1-deficient mice. Recent studies demonstrated that mice expressing RIP1 kinase-dead mutants developed normally and resisted necroptotic stimuli in vitro and in vivo. However, the impact of RIP1 kinase activity on Fadd(-/-) embryonic development remains unknown...
June 2, 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28572508/cardioprotective-role-of-traf2-by-suppressing-apoptosis-and-necroptosis
#6
Xiaoyun Guo, Haifeng Yin, Lei Li, Yi Chen, Jing Li, Jessica Doan, Rachel N Steinmetz, Qinghang Liu
Background -Programed cell death, including apoptosis, mitochondria-mediated necrosis, and necroptosis, is critically involved in ischemic cardiac injury, pathological cardiac remodeling, and heart failure progression. Whereas apoptosis and mitochondria-mediated necrosis signaling is well established, the regulatory mechanisms of necroptosis and its significance in the pathogenesis of heart failure remain elusive. Methods -We examined the role of Traf2 (TNF receptor-associated factor 2) in regulating myocardial necroptosis and remodeling using genetic mouse models...
June 1, 2017: Circulation
https://www.readbyqxmd.com/read/28564603/2-hg-inhibits-necroptosis-by-stimulating-dnmt1-dependent-hypermethylation-of-the-rip3-promoter
#7
Zhentao Yang, Bin Jiang, Yan Wang, Hengxiao Ni, Jia Zhang, Jinmei Xia, Minggang Shi, Li-Man Hung, Jingsong Ruan, Tak Wah Mak, Qinxi Li, Jiahuai Han
2-hydroxyglutarate-(2-HG)-mediated inhibition of TET2 activity influences DNA hypermethylation in cells harboring mutations of isocitrate dehydrogenases 1 and 2 (IDH1/2). Here, we show that 2-HG also regulates DNA methylation mediated by DNA methyltransferase 1 (DNMT1). DNMT1-dependent hypermethylation of the RIP3 promoter occurred in both IDH1 R132Q knockin mutant mouse embryonic fibroblast (MEFs) and 2-HG-treated wild-type (WT) MEFs. We found that 2-HG bound to DNMT1 and stimulated its association with the RIP3 promoter, inducing hypermethylation that reduces RIP3 protein and consequently impaired RIP3-dependent necroptosis...
May 30, 2017: Cell Reports
https://www.readbyqxmd.com/read/28560421/a-novel-damage-mechanism-contribution-of-the-interaction-between-necroptosis-and-ros-to-high-glucose-induced-injury-and-inflammation-in-h9c2-cardiac-cells
#8
Weijie Liang, Meiji Chen, Dongdan Zheng, Jieyi He, Mingcai Song, Liqiu Mo, Jianqiang Feng, Jun Lan
Recently, a novel mechanism known as 'programmed necrosis' or necroptosis has been shown to be another important mechanism of cell death in the heart. In this study, we investigated the role of necroptosis in high glucose (HG)-induced injury and inflammation, as well as the underlying mechanisms. In particular, we focused on the interaction between necroptosis and reactive oxygen species (ROS) in H9c2 cardiac cells. Our results demonstrated that the exposure of H9c2 cardiac cells to 35 mM glucose (HG) markedly enhanced the expression level of receptor-interacting protein 3 (RIP3), a kinase which promotes necroptosis...
May 29, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28558962/galangin-ameliorates-cisplatin-induced-nephrotoxicity-by-attenuating-oxidative-stress-inflammation-and-cell-death-in-mice-through-inhibition-of-erk-and-nf-kappab-signaling
#9
Yu-Ching Huang, Ming-Shiun Tsai, Pei-Chi Hsieh, Jheng-Hong Shih, Tsu-Shing Wang, Yi-Chun Wang, Ting-Hui Lin, Sue-Hong Wang
Cisplatin is a chemotherapeutic agent widely used in the treatment of various cancers. However, cisplatin can induce nephrotoxicity and neurotoxicity, limiting its dosage and usage. Galangin, a natural flavonol, has been found to exhibit anti-oxidant and anti-inflammatory effects in vivo. Here, we investigated the effects of galangin on cisplatin-induced acute kidney injury (AKI) and its molecular mechanisms in mice. Galangin administration reduced the cisplatin-induced oxidative stress by decreasing renal MDA and 3-NT formations...
May 27, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28539327/quantitative-phospho-proteomic-analysis-of-tnf%C3%AE-nf%C3%AE%C2%BAb-signaling-reveals-a-role-for-ripk1-phosphorylation-in-suppressing-necrotic-cell-death
#10
Firaz Mohideen, Joao Paolo, Alban Ordureau, Steve P Gygi, J Wade Harper
TNFα is a potent inducer of inflammation due to its ability to promote gene expression, in part via the NFκB pathway. Moreover, in some contexts, TNFα promotes Caspase-dependent apoptosis or RIPK1/RIPK3/MLKL-dependent necrosis. Engagement of the TNF Receptor Signaling Complex (TNF-RSC), which contains multiple kinase activities, promotes phosphorylation of several downstream components, including TAK1, IKKα/IKKβ, IκBα, and NFκB. However, immediate downstream phosphorylation events occurring in response to TNFα signaling are poorly understood at a proteome-wide level...
May 24, 2017: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/28524164/ripped-for-neuroinflammation
#11
Bart Tummers, Douglas R Green
Activation of the receptor interacting serine/threonine kinase (RIPK) 3 mediates an inflammatory type of cell death called necroptosis; in addition, RIPK3 has necroptosis-independent roles in inflammation, although these are not well defined. In a recent study published in Cell, Daniels and colleagues demonstrate that RIPK3 controls West Nile virus infection by promoting neuroinflammation in the central nervous system without affecting neuronal death.
May 19, 2017: Cell Research
https://www.readbyqxmd.com/read/28511054/synthesis-and-in-vitro-anticancer-activity-of-new-2-thioxo-oxazolidin-4-one-derivatives
#12
Júlia Furtado Campos, Michelly Cristiny Pereira, Wanessa Layssa Batista de Sena, Caio Gomes de Barros Martins, Jamerson Ferreira de Oliveira, Cezar Augusto da Cruz Amorim, Moacyr Jesus Barreto de Melo Rêgo, Marina Galdino da Rocha Pitta, Maria do Carmo Alves de Lima, Maira Galdino da Rocha Pitta, Ivan da Rocha Pitta
BACKGROUND: Oxazolidinones derivatives exhibit different biological properties, including anticancer activity. This work aimed to investigate the anticancer potential of five novel 2-Thioxo-oxazolidin-4-one derivatives. METHODS: Cytotoxicity assays were performed in human peripheral blood mononuclear cells (PBMCs) from healthy individuals and seven tumor cell lines. Apoptosis detection and cell cycle were evaluated by flow cytometry and the expression of genes involved in cell death processes by Real-Time PCR...
March 18, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/28507808/pro-necrotic-molecules-impact-local-immunosurveillance-in-human-breast-cancer
#13
Gautier Stoll, Yuting Ma, Heng Yang, Oliver Kepp, Laurence Zitvogel, Guido Kroemer
Necrosis culminates in spilling cellular content through the permeabilized plasma membrane, thereby releasing potentially immunostimulatory molecules in the pericellular space of dead cells. Accordingly, molecules involved in necroptotic signaling, such as receptor-interacting serine/threonine-protein kinase 3 (RIPK3) and mixed lineage kinase-like (MLKL) have been found to stimulate anticancer immune responses in mouse models of chemotherapy. mRNAs encoding prominent pro-necrotic gene products (RIPK1, RIPK3, MLKL, PGAM5 and DFNA5) were correlated with immune-related metagenes in several cancer types (breast, colorectal, lung, ovary, melanoma), revealing the strongest associations in breast cancer...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28501693/necrostatin-1-protects-hippocampal-neurons-against-ischemia-reperfusion-injury-via-the-rip3-daxx-signaling-pathway-in-rats
#14
Rongli Yang, Kun Hu, Jieyun Chen, Shiguang Zhu, Lei Li, Hailong Lu, Pingjing Li, Ruiguo Dong
Global cerebral ischemia/reperfusion (I/R) induces selective neuronal injury in CA1 region of hippocampus, leading to severe impairment in behavior, learning and memory functions. However, the molecular mechanism underlying the processes was not elucidated clearly. RIP3 is a key molecular switch connecting apoptosis, necrosis and necroptosis. DAXX, as a novel substrate of RIP3, plays a vital role in ischemia-induced neuronal death. The aim of this study is to investigate the role and mechanism of RIP3/DAXX signaling pathway on neurons in CA1 region of the rat hippocampus after cerebral I/R...
May 10, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28498367/initiation-and-execution-mechanisms-of-necroptosis-an-overview
#15
REVIEW
Sasker Grootjans, Tom Vanden Berghe, Peter Vandenabeele
Necroptosis is a form of regulated cell death, which is induced by ligand binding to TNF family death domain receptors, pattern recognizing receptors and virus sensors. The common feature of these receptor systems is the implication of proteins, which contain a receptor interaction protein kinase (RIPK) homology interaction motif (RHIM) mediating recruitment and activation of receptor-interacting protein kinase 3 (RIPK3), which ultimately activates the necroptosis executioner mixed lineage kinase domain-like (MLKL)...
May 12, 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28485476/necroptosis-resumes-apoptosis-in-hippocampus-but-not-in-frontal-cortex
#16
Sara Nikseresht, Fariba Khodagholi, Leila Dargahi, Abolhassan Ahmadiani
Cell death subsequent to concurrent with neuroinflammation results in some damages like neuron loss and spatial memory impairment. In this study we demonstrate the temporal pattern of neuroinflammation, necroptotic and apoptotic cell deaths in hippocampus and frontal cortex following intracerebroventricular administration of lipopolysaccharide (LPS). We evaluated receptor interacting protein kinase 1 (RIP1), RIP3 and two related metabolic enzymes including glutamate-ammonia ligase (GLUL) and glutamate dehydrogenase (GLUD) as necroptosis factors...
May 9, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28476895/regression-of-apoptosis-resistant-colorectal-tumors-by-induction-of-necroptosis-in-mice
#17
Gui-Wei He, Claudia Günther, Veronika Thonn, Yu-Qiang Yu, Eva Martini, Barbara Buchen, Markus F Neurath, Michael Stürzl, Christoph Becker
Cancer cells often acquire capabilities to evade cell death induced by current chemotherapeutic treatment approaches. Caspase-8, a central initiator of death receptor-mediated apoptosis, for example, is frequently inactivated in human cancers via multiple mechanisms such as mutation. Here, we show an approach to overcome cell death resistance in caspase-8-deficient colorectal cancer (CRC) by induction of necroptosis. In both a hereditary and a xenograft mouse model of caspase-8-deficient CRC, second mitochondria-derived activator of caspase (SMAC) mimetic treatment induced massive cell death and led to regression of tumors...
June 5, 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28475174/diverse-ubiquitin-linkages-regulate-rip-kinases-mediated-inflammatory-and-cell-death-signaling
#18
REVIEW
Axel Witt, Domagoj Vucic
Members of the RIP kinase family are key regulators of inflammation and cell death signaling implicated in maintaining immune responses and proper tissue homeostasis. Increasing evidence points to post-translational modifications of RIP1, RIP2 and RIP3 as being critical for regulating their function. Ubiquitination and the E3 ligases, such as inhibitors of apoptosis (IAP) proteins and LUBAC, that direct substrate selectivity as well as the deubiquitinating enzymes, such as A20 and OTULIN, that reverse these modifications dictate the outcome of RIP kinase signaling...
May 5, 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28472590/evidence-of-necroptosis-in-hearts-subjected-to-various-forms-of-ischemic-insults
#19
Adriana Adameova, Jaroslav Hrdlicka, Adrian Szobi, Veronika Farkasova, Katarina Kopaskova, Martina Murarikova, Jan Neckar, Frantisek Kolar, Tatiana Ravingerova, Naranjan S Dhalla
Long-lasting ischemia can result in cell loss; however, repeated episodes of brief ischemia increase the resistance of the heart against deleterious effects of subsequent prolonged ischemic insult and promote cell survival. Traditionally, it is believed that the supply of blood to the ischemic heart is associated with release of cytokines, activation of inflammatory response, and induction of necrotic cell death. In the past few years, this paradigm of passive necrosis as an uncontrolled cell death has been re-examined and the existence of a strictly regulated form of necrotic cell death, necroptosis, has been documented...
May 4, 2017: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/28462531/the-interplay-of-ikk-nf-%C3%AE%C2%BAb-and-ripk1-signaling-in-the-regulation-of-cell-death-tissue-homeostasis-and-inflammation
#20
REVIEW
Vangelis Kondylis, Snehlata Kumari, Katerina Vlantis, Manolis Pasparakis
Regulated cell death pathways have important functions in host defense and tissue homeostasis. Studies in genetic mouse models provided evidence that cell death could cause inflammation in different tissues. Inhibition of RIPK3-MLKL-dependent necroptosis by FADD and caspase-8 was identified as a key mechanism preventing inflammation in epithelial barriers. Moreover, the interplay between IKK/NF-κB and RIPK1 signaling was recognized as a critical determinant of tissue homeostasis and inflammation. NEMO was shown to regulate RIPK1 kinase activity-mediated apoptosis by NF-κB-dependent and -independent functions, which are critical for averting chronic tissue injury and inflammation in the intestine and the liver...
May 2017: Immunological Reviews
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