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RIPK3

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https://www.readbyqxmd.com/read/28087739/tnf-signaling-through-rip1-kinase-enhances-sn38-induced-death-in-colon-adenocarcinoma
#1
Lucia Cabal-Hierro, Peter J O'Dwyer
: Elucidation of tumor necrosis factor (TNF)-directed mechanisms for cell death induction and maintenance of tumor growth has revealed a role for receptor-interacting protein kinases 1 and 3 (RIPK1/RIP1 and RIPK3/RIP3), components of the necrosome complex, as determinants of cell fate. Here the participation of TNF signaling was analyzed with regard to the cytotoxic action of different DNA damaging agents in a panel of colon cancer cells. While most of these cell lines were insensitive to TNF, combination with these drugs increased sensitivity by inducing cell death and DNA damage, especially in the case of the topoisomerase inhibitor SN38...
January 13, 2017: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/28069136/the-inflammatory-signal-adaptor-ripk3-functions-beyond-necroptosis
#2
K Moriwaki, F K-M Chan
Receptor interacting protein kinase 3 (RIPK3) is an essential serine/threonine kinase for necroptosis, a type of regulated necrosis. A variety of stimuli can cause RIPK3 activation through phosphorylation. Activated RIPK3 in turn phosphorylates and activates the downstream necroptosis executioner mixed lineage kinase domain-like (MLKL). Necroptosis is a highly inflammatory type of cell death because of the release of intracellular immunogenic contents from disrupted plasma membrane. Indeed, RIPK3-deficient mice exhibited reduced inflammation in many inflammatory disease models...
2017: International Review of Cell and Molecular Biology
https://www.readbyqxmd.com/read/28004776/a20-curtails-primary-but-augments-secondary-cd8-t-cell-responses-in-intracellular-bacterial-infection
#3
Sissy Just, Gopala Nishanth, Jörn H Buchbinder, Xu Wang, Michael Naumann, Inna Lavrik, Dirk Schlüter
The ubiquitin-modifying enzyme A20, an important negative feedback regulator of NF-κB, impairs the expansion of tumor-specific CD8(+) T cells but augments the proliferation of autoimmune CD4(+) T cells. To study the T cell-specific function of A20 in bacterial infection, we infected T cell-specific A20 knockout (CD4-Cre A20(fl/fl)) and control mice with Listeria monocytogenes. A20-deficient pathogen-specific CD8(+) T cells expanded stronger resulting in improved pathogen control at day 7 p.i. Imaging flow cytometry revealed that A20-deficient Listeria-specific CD8(+) T cells underwent increased apoptosis and necroptosis resulting in reduced numbers of memory CD8(+) T cells...
December 22, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27999438/necroptosis-in-development-inflammation-and-disease
#4
Ricardo Weinlich, Andrew Oberst, Helen M Beere, Douglas R Green
In the early 2000s, receptor-interacting serine/threonine protein kinase 1 (RIPK1), a molecule already recognized as an important regulator of cell survival, inflammation and disease, was attributed an additional function: the regulation of a novel cell death pathway that came to be known as necroptosis. Subsequently, the related kinase RIPK3 and its substrate mixed-lineage kinase domain-like protein (MLKL) were also implicated in the necroptotic pathway, and links between this pathway and apoptosis were established...
December 21, 2016: Nature Reviews. Molecular Cell Biology
https://www.readbyqxmd.com/read/27999433/insane-in-the-membrane-a-structural-perspective-of-mlkl-function-in-necroptosis
#5
REVIEW
Emma J Petrie, Joanne M Hildebrand, James M Murphy
Necroptosis (or 'programmed necrosis') is a caspase-independent cell death pathway that operates downstream of death receptors, including Tumour Necrosis Factor Receptor-1 (TNFR1), and the Toll-like receptors, TLR3 and TLR4. Owing to its immunogenicity, necroptosis has been attributed roles in the pathogenesis of several diseases, including inflammatory bowel disease and the tissue damage arising from ischemic-reperfusion injuries. Only over the past 7 years has the core machinery of this pathway, the receptor-interacting protein kinase-3 (RIPK3) and the pseudokinase, Mixed Lineage Kinase domain-Like (MLKL), been defined...
December 21, 2016: Immunology and Cell Biology
https://www.readbyqxmd.com/read/27974745/mechanisms-of-ripk3-induced-inflammation
#6
REVIEW
Inbar Shlomovitz, Sefi Zargrian, Motti Gerlic
Receptor-interacting protein kinase 3 (RIP3/RIPK3) is a multifunctional regulator of cell death and inflammation. It controls signalling downstream of the tumor necrosis factor (TNF) receptor family, DNA-dependent activator of IFN-regulatory factors (DAI) and toll-like receptors (TLRs). Today, it is also widely recognized as a component of caspase-independent cell death known as necroptosis, and cytokine production via activation of the inflammasome. Its role in inflammasome activation, in particular, make the interpretation of its role in vivo more complex...
January 3, 2017: Immunology and Cell Biology
https://www.readbyqxmd.com/read/27959630/necroptosis-mechanisms-and-relevance-to-disease
#7
Lorenzo Galluzzi, Oliver Kepp, Francis Ka-Ming Chan, Guido Kroemer
Necroptosis is a form of regulated cell death that critically depends on receptor-interacting serine-threonine kinase 3 (RIPK3) and mixed lineage kinase domain-like (MLKL) and generally manifests with morphological features of necrosis. The molecular mechanisms that underlie distinct instances of necroptosis have just begun to emerge. Nonetheless, it has already been shown that necroptosis contributes to cellular demise in various pathophysiological conditions, including viral infection, acute kidney injury, and cardiac ischemia/reperfusion...
December 5, 2016: Annual Review of Pathology
https://www.readbyqxmd.com/read/27924226/questions-and-controversies-the-role-of-necroptosis-in-liver-disease
#8
REVIEW
Lily Dara, Zhang-Xu Liu, Neil Kaplowitz
Acute and chronic liver injury results in hepatocyte death and turnover. If injury becomes chronic, the continuous cell death and turnover leads to chronic inflammation, fibrosis and ultimately cirrhosis and hepatocellular carcinoma. Controlling liver cell death both in acute injury, to rescue the liver from acute liver failure, and in chronic injury, to curb secondary inflammation and fibrosis, is of paramount importance as a therapeutic strategy. Both apoptosis and necrosis occur in the liver, but the occurrence of necroptosis in the liver and its contribution to liver disease is controversial...
2016: Cell Death Discovery
https://www.readbyqxmd.com/read/27920775/human-papillomavirus-downregulates-the-expression-of-ifitm1-and-ripk3-to-escape-from-ifn%C3%AE-and-tnf%C3%AE-mediated-antiproliferative-effects-and-necroptosis
#9
Wenbo Ma, Bart Tummers, Edith M G van Esch, Renske Goedemans, Cornelis J M Melief, Craig Meyers, Judith M Boer, Sjoerd H van der Burg
The clearance of a high-risk human papillomavirus (hrHPV) infection takes time and requires the local presence of a strong type 1 cytokine T cell response, suggesting that hrHPV has evolved mechanisms to resist this immune attack. Using an unique system for non, newly, and persistent hrHPV infection, we show that hrHPV infection renders keratinocytes (KCs) resistant to the antiproliferative- and necroptosis-inducing effects of IFNγ and TNFα. HrHPV-impaired necroptosis was associated with the upregulation of several methyltransferases, including EZH2, and the downregulation of RIPK3 expression...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27917412/zbp1-dai-is-an-innate-sensor-of-influenza-virus-triggering-the-nlrp3-inflammasome-and-programmed-cell-death-pathways
#10
Teneema Kuriakose, Si Ming Man, R K Subbarao Malireddi, Rajendra Karki, Sannula Kesavardhana, David E Place, Geoffrey Neale, Peter Vogel, Thirumala-Devi Kanneganti
The interferon-inducible protein Z-DNA binding protein 1 (ZBP1, also known as DNA-dependent activator of IFN-regulatory factors (DAI) and DLM-1) was identified as a dsDNA sensor, which instigates innate immune responses. However, this classification has been disputed and whether ZBP1 functions as a pathogen sensor during an infection has remained unknown. Herein, we demonstrated ZBP1-mediated sensing of the influenza A virus (IAV) proteins NP and PB1, triggering cell death and inflammatory responses via the RIPK1-RIPK3-Caspase-8 axis...
August 5, 2016: Science Immunology
https://www.readbyqxmd.com/read/27913189/construction-and-analysis-of-a-human-testis-sperm-enriched-interaction-network-unraveling-the-ppp1cc2-interactome
#11
Joana Vieira Silva, Sooyeon Yoon, Pieter-Jan De Bock, Alexander V Goltsev, Kris Gevaert, José Fernando F Mendes, Margarida Fardilha
BACKGROUND: Phosphoprotein phosphatase 1 catalytic subunit gamma 2 (PPP1CC2), a PPP1CC tissue-specific alternative splice restricted to testicular germ cells and spermatozoa, is essential for spermatogenesis and spermatozoa motility. The key to understand PPP1CC2 regulation lies on the characterization of its interacting partners. METHODS: We construct a testis/sperm-enriched protein interaction network and analyzed the topological properties and biological context of the network...
February 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/27901113/programmed-necrosis-a-new-mechanism-of-steroidogenic-luteal-cell-death-and-elimination-during-luteolysis-in-cows
#12
Takuo Hojo, Marta J Siemieniuch, Karolina Lukasik, Katarzyna K Piotrowska-Tomala, Agnieszka W Jonczyk, Kiyoshi Okuda, Dariusz J Skarzynski
Programmed necrosis (necroptosis) is an alternative form of programmed cell death that is regulated by receptor-interacting protein kinase (RIPK) 1 and 3-dependent, but is a caspase (CASP)-independent pathway. In the present study, to determine if necroptosis participates in bovine structural luteolysis, we investigated RIPK1 and RIPK3 expression throughout the estrous cycle, during prostaglandin F2α (PGF)-induced luteolysis in the bovine corpus luteum (CL), and in cultured luteal steroidogenic cells (LSCs) after treatment with selected luteolytic factors...
November 30, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27900566/autophagy-regulates-death-of-retinal-pigment-epithelium-cells-in-age-related-macular-degeneration
#13
REVIEW
Kai Kaarniranta, Paulina Tokarz, Ali Koskela, Jussi Paterno, Janusz Blasiak
Age-related macular degeneration (AMD) is an eye disease underlined by the degradation of retinal pigment epithelium (RPE) cells, photoreceptors, and choriocapillares, but the exact mechanism of cell death in AMD is not completely clear. This mechanism is important for prevention of and therapeutic intervention in AMD, which is a hardly curable disease. Present reports suggest that both apoptosis and pyroptosis (cell death dependent on caspase-1) as well as necroptosis (regulated necrosis dependent on the proteins RIPK3 and MLKL, caspase-independent) can be involved in the AMD-related death of RPE cells...
November 29, 2016: Cell Biology and Toxicology
https://www.readbyqxmd.com/read/27886851/the-role-of-necroptosis-in-pulmonary-diseases
#14
REVIEW
Kenji Mizumura, Shuichiro Maruoka, Yasuhiro Gon, Augustine M K Choi, Shu Hashimoto
By regulating the cell number and eliminating harmful cells, programmed cell death plays a critical role in development, homeostasis, and disease. While apoptosis is a recognized form of programmed cell death, necrosis was considered a type of uncontrolled cell death induced by extreme physical or chemical stress. However, recent studies have revealed the existence of a genetically programmed and regulated form of necrosis, termed necroptosis. Necroptosis is defined as necrotic cell death that is dependent on receptor-interacting protein kinase 3 (RIPK3)...
November 2016: Respiratory Investigation
https://www.readbyqxmd.com/read/27832137/atp-competitive-mlkl-binders-have-no-functional-impact-on-necroptosis
#15
Bin Ma, Doug Marcotte, Murugan Paramasivam, Klaus Michelsen, Ti Wang, Andrea Bertolotti-Ciarlet, John Howard Jones, Ben Moree, Margaret Butko, Joshua Salafsky, Xin Sun, Timothy McKee, Laura F Silvian
MLKL is a pore forming pseudokinase involved in the final stage of necroptosis, a form of programmed cell death. Its phosphorylation by RIPK3 is necessary for triggering necroptosis but not for triggering apoptosis, which makes it a unique target for pharmacological inhibition to block necroptotic cell death. This mechanism has been described as playing a role in disease progression in neurodegenerative and inflammatory diseases. A type II kinase inhibitor (cpd 1) has been described that reportedly binds to the MLKL pseudokinase domain and prevents necroptosis...
2016: PloS One
https://www.readbyqxmd.com/read/27819682/ripk1-inhibits-zbp1-driven-necroptosis-during-development
#16
Kim Newton, Katherine E Wickliffe, Allie Maltzman, Debra L Dugger, Andreas Strasser, Victoria C Pham, Jennie R Lill, Merone Roose-Girma, Søren Warming, Margaret Solon, Hai Ngu, Joshua D Webster, Vishva M Dixit
Receptor-interacting protein kinase 1 (RIPK1) promotes cell survival-mice lacking RIPK1 die perinatally, exhibiting aberrant caspase-8-dependent apoptosis and mixed lineage kinase-like (MLKL)-dependent necroptosis. However, mice expressing catalytically inactive RIPK1 are viable, and an ill-defined pro-survival function for the RIPK1 scaffold has therefore been proposed. Here we show that the RIP homotypic interaction motif (RHIM) in RIPK1 prevents the RHIM-containing adaptor protein ZBP1 (Z-DNA binding protein 1; also known as DAI or DLM1) from activating RIPK3 upstream of MLKL...
December 1, 2016: Nature
https://www.readbyqxmd.com/read/27819681/ripk1-counteracts-zbp1-mediated-necroptosis-to-inhibit-inflammation
#17
Juan Lin, Snehlata Kumari, Chun Kim, Trieu-My Van, Laurens Wachsmuth, Apostolos Polykratis, Manolis Pasparakis
Receptor-interacting protein kinase 1 (RIPK1) regulates cell death and inflammation through kinase-dependent and -independent functions. RIPK1 kinase activity induces caspase-8-dependent apoptosis and RIPK3 and mixed lineage kinase like (MLKL)-dependent necroptosis. In addition, RIPK1 inhibits apoptosis and necroptosis through kinase-independent functions, which are important for late embryonic development and the prevention of inflammation in epithelial barriers. The mechanism by which RIPK1 counteracts RIPK3-MLKL-mediated necroptosis has remained unknown...
December 1, 2016: Nature
https://www.readbyqxmd.com/read/27816051/molecular-features-of-the-cytotoxicity-of-an-nhe-inhibitor-evidence-of-mitochondrial-alterations-ros-overproduction-and-dna-damage
#18
Francesca Aredia, Sebastian Czaplinski, Simone Fulda, A Ivana Scovassi
BACKGROUND: NH exchangers (NHEs) play a crucial role in regulating intra/extracellular pH, which is altered in cancer cells, and are therefore suitable targets to alter cancer cell metabolism in order to inhibit cell survival and proliferation. Among NHE inhibitors, amiloride family members are commonly used in clinical practice as diuretics; we focused on the amiloride HMA, reporting a net cytotoxic effect on a panel of human cancer cell lines; now we aim to provide new insights into the molecular events leading to cell death by HMA...
November 5, 2016: BMC Cancer
https://www.readbyqxmd.com/read/27815445/neutrophil-necroptosis-is-triggered-by-ligation-of-adhesion-molecules-following-gm-csf-priming
#19
Xiaoliang Wang, Zhaoyue He, He Liu, Shida Yousefi, Hans-Uwe Simon
Apoptosis is the most common form of neutrophil death under both physiological and inflammatory conditions. However, forms of nonapoptotic neutrophil death have also been observed. In the current study, we report that human neutrophils undergo necroptosis after exposure to GM-CSF followed by the ligation of adhesion receptors such as CD44, CD11b, CD18, or CD15. Using a pharmacological approach, we demonstrate the presence of a receptor-interacting protein kinase-3 (RIPK3)-a mixed lineage kinase-like (MLKL) signaling pathway in neutrophils which, following these treatments, first activates p38 MAPK and PI3K, that finally leads to the production of high levels of reactive oxygen species (ROS)...
November 15, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/27811014/regulated-necrosis-related-molecule-mrna-expression-in-humans-and-mice-and-in-murine-acute-tissue-injury-and-systemic-autoimmunity-leading-to-progressive-organ-damage-and-progressive-fibrosis
#20
Mohsen Honarpisheh, Jyaysi Desai, Julian A Marschner, Marc Weidenbusch, Maciej Lech, Volker Vielhauer, Hans-Joachim Anders, Shrikant R Mulay
The species-specific, as well as organ-specific expression of regulated necrosis (RN)-related molecules, is not known. We determined the expression levels of tumour necrosis factor receptor-1 (TNFR1), receptor activated protein kinase (RIPK)1, RIPK3, mixed lineage kinase domain-like (MLKL), CASP8, Fas-associated protein with death domain (FADD), cellular inhibitor of apoptosis protein (CIAP)1, CIAP2, glutathione peroxidase-4 (GPX4), cyclophilin D (CYPD), CASP1, NLRP3 and poly(ADP-ribose) polymerase-1 (PARP1) in human and mouse solid organs...
December 2016: Bioscience Reports
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