keyword
MENU ▼
Read by QxMD icon Read
search

necroptosis

keyword
https://www.readbyqxmd.com/read/28650960/phosphatidylserine-externalization-necroptotic-bodies-release-and-phagocytosis-during-necroptosis
#1
Sefi Zargarian, Inbar Shlomovitz, Ziv Erlich, Aria Hourizadeh, Yifat Ofir-Birin, Ben A Croker, Neta Regev-Rudzki, Liat Edry-Botzer, Motti Gerlic
Necroptosis is a regulated, nonapoptotic form of cell death initiated by receptor-interacting protein kinase-3 (RIPK3) and mixed lineage kinase domain-like (MLKL) proteins. It is considered to be a form of regulated necrosis, and, by lacking the "find me" and "eat me" signals that are a feature of apoptosis, necroptosis is considered to be inflammatory. One such "eat me" signal observed during apoptosis is the exposure of phosphatidylserine (PS) on the outer plasma membrane. Here, we demonstrate that necroptotic cells also expose PS after phosphorylated mixed lineage kinase-like (pMLKL) translocation to the membrane...
June 26, 2017: PLoS Biology
https://www.readbyqxmd.com/read/28649853/cationic-liposome-co-encapsulation-of-smac-mimetic-and-zvad-using-a-novel-lipid-bilayer-fusion-loaded-with-mlkl-pdna-for-tumor-inhibition-in-vivo
#2
Dan Sun, Linshu Zhao, Junzhong Lin, Yun Zhao, Yu Zheng
The increase in multidrug resistance among colon cancer cells presents a challenge for the development of effective therapies. Small-molecule analogs of second mitochondria-derived activator of caspase (SMAC) mimetic in association with mixed lineage kinase domain-like protein (MLKL)-pDNA and z-VAD-fmk have shown ideal antitumor effects in colon cancer cells in vitro via induction of RIP3-dependent necroptosis. To achieve synergistic antitumor effects in vivo, liposomes loaded with SMAC mimetic, MLKL-pDNA and z-VAD-fmk have been developed using novel lipid fusion methods to co-localize the molecules of interest within the tumor cells...
June 26, 2017: Journal of Drug Targeting
https://www.readbyqxmd.com/read/28648925/new-imidoyl-indazole-platinum-ii-complexes-as-potential-anticancer-agents-synthesis-evaluation-of-cytotoxicity-cell-death-and-experimental-theoretical-dna-interaction-studies
#3
Alan R Cabrera, Christian Espinosa-Bustos, Mario Faúndez, Jaime Meléndez, Pablo Jaque, Constantin G Daniliuc, Adam Aguirre, Rene S Rojas, Cristian O Salas
Four new neutral N,N imidoyl-indazole ligands (L1, L3, L6, L7) and six new Pt(II)-based complexes (C1-5 and C7) were synthesized and characterized by spectroscopic and spectrometric techniques. Additionally, compounds L6, L7, C3, C5 and C7 were analyzed using X-ray diffraction. An evaluation of cytotoxicity and cell death in vitro for both ligands and complexes was performed by colorimetric assay and flow cytometry, in four cancer cell lines and VERO cells as the control, respectively. Cytotoxicity and selectivity demonstrated by each compound were dependent on the cancer cell line assayed...
June 15, 2017: Journal of Inorganic Biochemistry
https://www.readbyqxmd.com/read/28648608/structures-of-pgam5-provide-insight-into-active-site-plasticity-and-multimeric-assembly
#4
Apirat Chaikuad, Panagis Filippakopoulos, Sean R Marcsisin, Sarah Picaud, Martin Schröder, Shiori Sekine, Hidenori Ichijo, John R Engen, Kohsuke Takeda, Stefan Knapp
PGAM5 is a mitochondrial membrane protein that functions as an atypical Ser/Thr phosphatase and is a regulator of oxidative stress response, necroptosis, and autophagy. Here we present several crystal structures of PGAM5 including the activating N-terminal regulatory sequences, providing a model for structural plasticity, dimerization of the catalytic domain, and the assembly into an enzymatically active dodecameric form. Oligomeric states observed in structures were supported by hydrogen exchange mass spectrometry, size-exclusion chromatography, and analytical ultracentrifugation experiments in solution...
June 10, 2017: Structure
https://www.readbyqxmd.com/read/28647341/suppression-of-autophagic-flux-contributes-to-cardiomyocyte-death-by-activation-of-necroptotic-pathways
#5
Makoto Ogasawara, Toshiyuki Yano, Masaya Tanno, Koki Abe, Satoko Ishikawa, Takayuki Miki, Atsushi Kuno, Toshiyuki Tobisawa, Shingo Muratsubaki, Kouhei Ohno, Yuki Tatekoshi, Kei Nakata, Wataru Ohwada, Tetsuji Miura
BACKGROUND: The role of necroptosis in myocardial injury has not been fully characterized. Here we examined roles of mitochondrial permeability transition pore (mPTP) and autophagy in necroptosis of cardiomyocytes. METHODS AND RESULTS: In H9c2 cells, necroptosis was induced by treatment with TNF-α (TNF) and z-VAD-fmk (zVAD) for 24h, and necroptotic death was determined by LDH release (as % of total). TNF/zVAD increased LDH release from 16.6±4.3% to 60.6±2.7%, and the LDH release was suppressed by necrostatin-1 (29...
June 21, 2017: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/28647049/targeting-of-regulated-necrosis-in-kidney-disease
#6
Diego Martin-Sanchez, Jonay Poveda, Miguel Fontecha-Barriuso, Olga Ruiz-Andres, María Dolores Sanchez-Niño, Marta Ruiz-Ortega, Alberto Ortiz, Ana Belén Sanz
The term acute tubular necrosis was thought to represent a misnomer derived from morphological studies of human necropsies and necrosis was thought to represent an unregulated passive form of cell death which was not amenable to therapeutic manipulation. Recent advances have improved our understanding of cell death in acute kidney injury. First, apoptosis results in cell loss, but does not trigger an inflammatory response. However, clumsy attempts at interfering with apoptosis (e.g. certain caspase inhibitors) may trigger necrosis and, thus, inflammation-mediated kidney injury...
June 21, 2017: Nefrología: Publicación Oficial de la Sociedad Española Nefrologia
https://www.readbyqxmd.com/read/28642032/apoptosis-and-necroptosis-as-host-defense-strategies-to-prevent-viral-infection
#7
REVIEW
Megan H Orzalli, Jonathan C Kagan
Antiviral transcriptional responses and regulated cell death are crucial components of the host response to virus infection. However, in contrast to the signaling pathways that promote antiviral transcription, those that initiate cell death following virus infection are less understood. Several recent studies have identified pattern recognition receptors (PRRs) of the mammalian innate immune system that activate cell death pathways. These same receptors also have established roles in the induction of antiviral gene expression...
June 19, 2017: Trends in Cell Biology
https://www.readbyqxmd.com/read/28633009/rna-interference-reveals-the-coregulatory-effects-of-cylindromatosis-on-apoptosis-and-necroptosis-of-photoreceptor-cells-in-experimental-retinal-detachment
#8
Kai Dong, Linfeng Han, Jingwen Liu, Fenghua Wang, Xiaodong Sun
Inhibiting only cell apoptosis or necroptosis in photoreceptor cells does not protect them against death after traumatic retinal detachment. This study was designed to evaluate the coregulatory effects of the deubiquitinating enzyme cylindromatosis on the apoptosis and necroptosis of photoreceptor cells in experimental retinal detachment. Lentivirus Cyld shRNA was generated and used to suppress cylindromatosis expression in Sprague-Dawley rats. Three weeks after injection of lentivirus Cyld shRNA, retinal detachment surgery was performed...
June 17, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28628894/small-molecule-probes-for-cellular-death-machines
#9
REVIEW
Ying Li, Lihui Qian, Junying Yuan
The past decade has witnessed a significant expansion of our understanding about the regulated cell death mechanisms beyond apoptosis. The application of chemical biological approaches had played a major role in driving these exciting discoveries. The discovery and use of small molecule probes in cell death research has not only revealed significant insights into the regulatory mechanism of cell death but also provided new drug targets and lead drug candidates for developing therapeutics of human diseases with huge unmet need...
June 16, 2017: Current Opinion in Chemical Biology
https://www.readbyqxmd.com/read/28628031/kinase-independent-functions-of-ripk1-regulate-hepatocyte-survival-and-liver-carcinogenesis
#10
Trieu-My Van, Apostolos Polykratis, Beate Katharina Straub, Vangelis Kondylis, Nikoletta Papadopoulou, Manolis Pasparakis
The mechanisms that regulate cell death and inflammation play an important role in liver disease and cancer. Receptor-interacting protein kinase 1 (RIPK1) induces apoptosis and necroptosis via kinase-dependent mechanisms and exhibits kinase-independent prosurvival and proinflammatory functions. Here, we have used genetic mouse models to study the role of RIPK1 in liver homeostasis, injury, and cancer. While ablating either RIPK1 or RelA in liver parenchymal cells (LPCs) did not cause spontaneous liver pathology, mice with combined deficiency of RIPK1 and RelA in LPCs showed increased hepatocyte apoptosis and developed spontaneous chronic liver disease and cancer that were independent of TNF receptor 1 (TNFR1) signaling...
June 19, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28624766/dhea-protects-mitochondria-against-dual-modes-of-apoptosis-and-necroptosis-in-human-granulosa-ho23-cells
#11
Kuan-Hao Tsui, Peng-Hui Wang, Li-Te Lin, Chia-Jung Li
Because ovarian granulosa cells are essential for oocyte maturation and development, we validated human granulosa HO23 cells to evaluate the ability of the DHEA to prevent cell death after starvation. The present study was aimed to investigate whether DHEA could protect against starvation-induced apoptosis and necroptosis in human oocyte granulosa HO23 cells. The starvation was induced by treatment of serum-free (SF) medium for 4 h in vitro Starvation-induced mitochondrial depolarization, cytochrome c release and caspase-3 activation were largely prevented by DHEA in HO23 cells...
August 2017: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/28615539/necroptosis-as-a-potential-therapeutic-target-in-multiple-organ-dysfunction-syndrome
#12
Yao-Li Cui, Li-Hua Qiu, Shi-Yong Zhou, Lan-Fang Li, Zheng-Zi Qian, Xian-Ming Liu, Hui-Lai Zhang, Xiu-Bao Ren, Yong-Qiang Wang
PURPOSE: To investigate how necroptosisis, i.e. programmed necrosis, is involved in MODS, and to examine whether Nec-1, a specific necroptosis inhibitor, ameliorates multiorgan injury in MODS. EXPERIMENTAL DESIGN: A model of MODS was established in six-week old SD rats using fracture trauma followed by hemorrhage. Control animals received sham surgery. Cell death form and necrosome formation were measured by fluorescence-activated cell sorting and western blotting...
May 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28614669/severe-pneumococcal-pneumonia-causes-acute-cardiac-toxicity-and-subsequent-cardiac-remodeling
#13
Luis F Reyes, Marcos I Restrepo, Cecilia A Hinojosa, Nilam J Soni, Antonio Anzueto, Bettina L Babu, Norberto Gonzalez-Juarbe, Alejandro H Rodriguez, Alejandro Jimenez, James D Chalmers, Stefano Aliberti, Oriol Sibila, Vicki T Winter, Jacqueline J Coalson, Luis D Giavedoni, Charles S Dela Cruz, Grant W Waterer, Martin Witzenrath, Norbert Suttorp, Peter H Dube, Carlos J Orihuela
RATIONALE: Up to one-third of the patients hospitalized with pneumococcal pneumonia experience major adverse cardiac events (MACE) during or after pneumonia. In mice, Streptococcus pneumoniae can invade the myocardium, induce cardiomyocyte death, and disrupt cardiac function following bacteremia, but it is unknown whether the same occurs in humans with severe pneumonia. OBJECTIVE: We sought to determine whether S. pneumoniae can 1) translocate the heart, 2) induce cardiomyocyte death, 3) cause MACE, and 4) induce cardiac scar formation post-antibiotic treatment during severe pneumonia using a non-human primates (NHP) model...
June 14, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28613269/exploiting-cell-death-pathways-for-inducible-cell-elimination-to-modulate-graft-versus-host-disease
#14
REVIEW
Corey Falcon, Mustafa Al-Obaidi, Antonio Di Stasi
Hematopoietic stem cell transplantation is a potent form of immunotherapy, potentially life-saving for many malignant hematologic diseases. However, donor lymphocytes infused with the graft while exerting a graft versus malignancy effect can also cause potentially fatal graft versus host disease (GVHD). Our group has previously validated the inducible caspase-9 suicide gene in the haploidentical stem cell transplant setting, which proved successful in reversing signs and symptoms of GVHD within hours, using a non-therapeutic dimerizing agent...
June 14, 2017: Biomedicines
https://www.readbyqxmd.com/read/28607035/murine-cytomegalovirus-ie3-dependent-transcription-is-required-for-dai-zbp1-mediated-necroptosis
#15
Haripriya Sridharan, Katherine B Ragan, Hongyan Guo, Ryan P Gilley, Vanessa J Landsteiner, William J Kaiser, Jason W Upton
DNA-dependent activator of interferon regulatory factors/Z-DNA binding protein 1 (DAI/ZBP1) is a crucial sensor of necroptotic cell death induced by murine cytomegalovirus (MCMV) in its natural host. Here, we show that viral capsid transport to the nucleus and subsequent viral IE3-dependent early transcription are required for necroptosis. Necroptosis induction does not depend on input virion DNA or newly synthesized viral DNA A putative RNA-binding domain of DAI/ZBP1, Zα2, is required to sense virus and trigger necroptosis...
June 12, 2017: EMBO Reports
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
#16
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
#17
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/28591723/rip1-is-a-central-signaling-protein-in-regulation-of-tnf-%C3%AE-trail-mediated-apoptosis-and-necroptosis-during-newcastle-disease-virus-infection
#18
Ying Liao, Huaxia Wang, Xiang Mao, Hongjie Fang, Huang Wang, Yanrong Li, Yinjie Sun, Chun Meng, Lei Tan, Cuiping Song, Xusheng Qiu, Chan Ding
Newcastle disease virus (NDV) is an oncolytic virus which selectively replicates in tumor cells and exerts anti-tumor cytotoxic activity by promoting cell death. In this study, we focus on characterization of the underlying mechanisms of NDV-induced cell death in HeLa cells. We find that NDV Herts/33 strain triggers both extrinsic and intrinsic apoptosis at late infection times. The activation of NF-кB pathway and subsequent up-regulation of TNF-α/TRAIL initiates extrinsic apoptosis, leading to activation of caspase 8 and cleavage of Bid into tBid...
May 18, 2017: Oncotarget
https://www.readbyqxmd.com/read/28577894/proteolytic-control-of-regulated-necrosis
#19
REVIEW
Johaiber Fuchslocher Chico, Carina Saggau, Dieter Adam
Proteases control most of the physiological processes that occur in a cell. This particularly applies to apoptosis, the most well-studied form of cell death, where proteolysis by cysteine-aspartic proteases (caspases) is the primary mechanism for both initiation and execution of cell suicide. In contrast, the impact of proteolysis on other, non-apoptotic cell death pathways (summarized under the term "regulated necrosis", RN) has long been enigmatic, but has clearly been confirmed by a number of recent groundbreaking discoveries...
May 31, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28574501/rip1-kinase-activity-dependent-roles-in-embryonic-development-of-fadd-deficient-mice
#20
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
keyword
keyword
18516
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"