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https://www.readbyqxmd.com/read/28205631/immature-mice-are-more-susceptible-than-adult-mice-to-acetaminophen-induced-acute-liver-injury
#1
Yan Lu, Cheng Zhang, Yuan-Hua Chen, Hua Wang, Zhi-Hui Zhang, Xi Chen, De-Xiang Xu
Acetaminophen (APAP) overdose induces acute liver injury. The aim of the present study was to analyze the difference of susceptibility between immature and adult mice to APAP-induced acute liver injury. Weanling immature and adult mice were injected with APAP (300 mg/kg). As expected, immature mice were more susceptible than adult mice to APAP-induced acute liver injury. APAP-evoked hepatic c-Jun N-terminal kinase phosphorylation was stronger in immature mice than in adult mice. Hepatic receptor-interacting protein (RIP)1 was obviously activated at APAP-exposed immature and adult mice...
February 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28199887/killing-colon-cancer-cells-through-pcd-pathways-by-a-novel-hyaluronic-acid-modified-shell-core-nanoparticle-loaded-with-rip3-in-combination-with-chloroquine
#2
Xueyan Hou, Chengli Yang, Lijing Zhang, Tingting Hu, Dan Sun, Hua Cao, Fan Yang, Gang Guo, Changyang Gong, Xiaoning Zhang, Aiping Tong, Rui Li, Yu Zheng
Due to extensive apoptosis defects and multidrug resistance, there is great interest regarding non-apoptotic programmed cell death (PCD) pathways, such as lysosomal-mediated programmed cell death (LM-PCD), necroptosis and autophagy. Because there is an intricate effector network among these PCD pathways, it is expected that they may act synergistically in cancer therapy. In this study, chloroquine (CQ) was found to significantly upregulate receptor-interacting protein kinase 3 (RIP3) expression, and RIP3 were involved in CQ-related autophagy...
January 2, 2017: Biomaterials
https://www.readbyqxmd.com/read/28186202/inhibition-of-receptor-interacting-protein-kinase-1-with-necrostatin-1s-ameliorates-disease-progression-in-elastase-induced-mouse-abdominal-aortic-aneurysm-model
#3
Qiwei Wang, Ting Zhou, Zhenjie Liu, Jun Ren, Noel Phan, Kartik Gupta, Danielle M Stewart, Stephanie Morgan, Carmel Assa, K Craig Kent, Bo Liu
Abdominal aortic aneurysm (AAA) is a common aortic disease with a progressive nature. There is no approved pharmacological treatment to effectively slow aneurysm growth or prevent rupture. Necroptosis is a form of programmed necrosis that is regulated by receptor-interacting protein kinases (RIPs). We have recently demonstrated that the lack of RIP3 in mice prevented aneurysm formation. The goal of the current study is to test whether perturbing necroptosis affects progression of existing aneurysm using the RIP1 inhibitors Necrostatin-1 (Nec-1) and an optimized form of Nec-1, 7-Cl-O-Nec-1 (Nec-1s)...
February 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28179994/matrine-induces-rip3-dependent-necroptosis-in-cholangiocarcinoma-cells
#4
Beibei Xu, Minying Xu, Yuan Tian, Qiang Yu, Yujie Zhao, Xiong Chen, Panying Mi, Hanwei Cao, Bing Zhang, Gang Song, Yan-Yan Zhan, Tianhui Hu
The development of acquired resistance to pro-apoptotic antitumor agents is a major impediment to the cure of cholangiocarcinoma (CCA). Antitumor drugs inducing non-apoptotic cell death are considered as a new approach to overcome such drug resistance. Here, we reported for the first time that matrine-induced necroptosis in CCA cell lines, differing from its classical role to induce apoptosis in many other kinds of cancer cells. CCA cells under matrine treatment exhibited typical necrosis-like but not apoptotic morphologic change...
2017: Cell Death Discovery
https://www.readbyqxmd.com/read/28176780/rip1-autophosphorylation-is-promoted-by-mitochondrial-ros-and-is-essential-for-rip3-recruitment-into-necrosome
#5
Yingying Zhang, Sheng Sean Su, Shubo Zhao, Zhentao Yang, Chuan-Qi Zhong, Xin Chen, Qixu Cai, Zhang-Hua Yang, Deli Huang, Rui Wu, Jiahuai Han
Necroptosis is a type of programmed cell death with great significance in many pathological processes. Tumour necrosis factor-α(TNF), a proinflammatory cytokine, is a prototypic trigger of necroptosis. It is known that mitochondrial reactive oxygen species (ROS) promote necroptosis, and that kinase activity of receptor interacting protein 1 (RIP1) is required for TNF-induced necroptosis. However, how ROS function and what RIP1 phosphorylates to promote necroptosis are largely unknown. Here we show that three crucial cysteines in RIP1 are required for sensing ROS, and ROS subsequently activates RIP1 autophosphorylation on serine residue 161 (S161)...
February 8, 2017: Nature Communications
https://www.readbyqxmd.com/read/28151467/augmented-trophoblast-cell-death-in-preeclampsia-can-proceed-via-ceramide-mediated-necroptosis
#6
Liane Jennifer Bailey, Sruthi Alahari, Andrea Tagliaferro, Martin Post, Isabella Caniggia
Preeclampsia, a serious hypertensive disorder of pregnancy, is characterized by elevated ceramide (CER) content that is responsible for heightened trophoblast cell death rates via apoptosis and autophagy. Whether trophoblast cells undergo necroptosis, a newly characterized form of regulated necrosis, and the potential role of CER in this process remain to be established. Herein, we report that exposure of both JEG3 cells and primary isolated cytotrophoblasts to C16:0 CER in conjunction with a caspase-8 inhibitor (Q-VD-OPh) promoted necroptotic cell death, as evidenced by increased expression and association of receptor-interacting protein kinases RIP1 and RIP3, as well as phosphorylation of mixed lineage kinase domain-like (MLKL) protein...
February 2, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28139717/deferasirox-induced-iron-depletion-promotes-bclxl-downregulation-and-death-of-proximal-tubular-cells
#7
Diego Martin-Sanchez, Angel Gallegos-Villalobos, Miguel Fontecha-Barriuso, Susana Carrasco, Maria Dolores Sanchez-Niño, Francisco J Lopez-Hernandez, Marta Ruiz-Ortega, Jesus Egido, Alberto Ortiz, Ana Belén Sanz
Iron deficiency has been associated with kidney injury. Deferasirox is an oral iron chelator used to treat blood transfusion-related iron overload. Nephrotoxicity is the most serious and common adverse effect of deferasirox and may present as an acute or chronic kidney disease. However, scarce data are available on the molecular mechanisms of nephrotoxicity. We explored the therapeutic modulation of deferasirox-induced proximal tubular cell death in culture. Deferasirox induced dose-dependent tubular cell death and AnexxinV/7AAD staining showed features of apoptosis and necrosis...
January 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28127258/tnf-%C3%AE-sensitizes-chemotherapy-and-radiotherapy-against-breast-cancer-cells
#8
Xiao Wu, Meng-Yao Wu, Min Jiang, Qiaoming Zhi, Xiaojie Bian, Meng-Dan Xu, Fei-Ran Gong, Juan Hou, Min Tao, Liu-Mei Shou, Weiming Duan, Kai Chen, Meng Shen, Wei Li
PURPOSE: Despite new developments in cancer therapy, chemotherapy and radiotherapy remain the cornerstone of breast cancer treatment. Therefore, finding ways to reduce the toxicity and increase sensitivity is particularly important. Tumor necrosis factor alpha (TNF-α) exerts multiple functions in cell proliferation, differentiation and apoptosis. In the present study, we investigated whether TNF-α could enhance the effect of chemotherapy and radiotherapy against breast cancer cells...
2017: Cancer Cell International
https://www.readbyqxmd.com/read/28115086/necroptosis-mediates-the-antineoplastic-effects-of-the-soluble-fraction-of-polysaccharide-from-red-wine-in-walker-256-tumor-bearing-rats
#9
Maria Carolina Stipp, Iglesias de Lacerda Bezerra, Claudia Rita Corso, Francislaine A Dos Reis Livero, Luiz Alexandre Lomba, Adriana Rute Cordeiro Caillot, Aleksander Roberto Zampronio, José Ederaldo Queiroz-Telles, Giseli Klassen, Edneia A S Ramos, Guilherme Lanzi Sassaki, Alexandra Acco
Polysaccharides are substances that modify the biological response to several stressors. The present study investigated the antitumor activity of the soluble fraction of polysaccharides (SFP), extracted from cabernet franc red wine, in Walker-256 tumor-bearing rats. The monosaccharide composition had a complex mixture, suggesting the presence of arabinoglactans, mannans, and pectins. Treatment with SFP (30 and 60mg/kg, oral) for 14days significantly reduced the tumor weight and volume compared with controls...
March 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28108311/rip1-and-rip3-contribute-to-shikonin-induced-dna-double-strand-breaks-in-glioma-cells-via-increase-of-intracellular-reactive-oxygen-species
#10
Zijian Zhou, Bin Lu, Chen Wang, Zongqi Wang, Tianfei Luo, Meihua Piao, Fankai Meng, Guangfan Chi, Yinan Luo, Pengfei Ge
Shikonin has been reported to induce glioma cell death via necroptosis, a type of programmed necrosis primarily mediated by RIP1 and RIP3. Although RIP1 and RIP3 are found to regulate some features of necrosis such as energy depletion and cellular membrane disruption, it remains unclear whether RIP1 and RIP3 could modulate DNA double strand breaks (DSBs), which is a crucial event leading to chromatinolysis. In this study, we used glioma cell lines and mice model of xenograft glioma to investigate the roles of RIP1 and RIP3 in shikonin-induced DNA DSBs...
April 1, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28099966/involvement-of-xbp1s-in-blue-light-induced-a2e-containing-retinal-pigment-epithelium-cell-death
#11
Bing Lu, Pengfei Zhang, Minwen Zhou, Wenqiu Wang, Qing Gu, Jingyang Feng, Xueting Luo, Xiangjun Sun, Fenghua Wang, Xiaodong Sun
PURPOSE: Retinal pigment epithelium (RPE) cell dysfunction is essential to the development of retinal degenerative disease. This study was designed to investigate how spliced X-box-binding protein 1 (XBP1s) regulates different modes of RPE cell death in vitro. METHODS: Human ARPE19 cells were incubated with 25 μM N-retinylidene-N-retinylethanolamine (A2E) and irradiated with blue light. Expressions of glucose-regulated protein 78 (GRP78) and XBP1s were detected by real-time quantitative PCR and Western blot...
January 19, 2017: Ophthalmic Research
https://www.readbyqxmd.com/read/28088644/tert-butyl-hydroperoxide-t-bhp-induced-apoptosis-and-necroptosis-in-endothelial-cells-roles-of-nox4-and-mitochondrion
#12
Wenwen Zhao, Haitao Feng, Wen Sun, Kang Liu, Jin-Jian Lu, Xiuping Chen
Oxidative stress causes endothelial death while underlying mechanisms remain elusive. Herein, the pro-death effect of tert-butyl hydroperoxide (t-BHP) was investigated with low concentration (50μM) of t-BHP (t-BHPL) and high concentration (500μM) of t-BHP (t-BHPH). Both t-BHPL and t-BHPH induced endothelial cell death was determined. T-BHPL induced caspase-dependent apoptosis and reactive oxygen species (ROS) generation, which was inhibited by N-acetyl-L-cysteine (NAC). Furthermore, NADPH oxidase inhibitor diphenyleneiodonium (DPI), NOX4 siRNA, and NOX4 inhibitor GKT137831 reduced t-BHPL-induced ROS generation while mitochondrial respiratory chain inhibitors rotenone (Rot), 2-thenoyltrifluoroacetone (TTFA), and antimycin A (AA) failed to do so...
April 2017: Redox Biology
https://www.readbyqxmd.com/read/28087739/tnf-signaling-through-rip1-kinase-enhances-sn38-induced-death-in-colon-adenocarcinoma
#13
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/28077640/viral-rna-at-two-stages-of-reovirus-infection-is-required-for-the-induction-of-necroptosis
#14
Angela K Berger, Bradley E Hiller, Deepti Thete, Anthony J Snyder, Encarnacion Perez, Jason W Upton, Pranav Danthi
: Necroptosis, a regulated form of necrotic cell death requires the activation of the RIP3 kinase. Here, we identify that infection of host cells with reovirus can result in necroptosis. We find that necroptosis requires sensing of the genomic RNA within incoming virus particles via cytoplasmic RNA sensors to produce type I IFN. While these events that occur prior to de novo synthesis of viral RNA are required for induction of necroptosis, they are not sufficient. Induction of necroptosis also requires late stages of reovirus infection...
January 11, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28065786/cisplatin-induced-necroptosis-in-tnf%C3%AE-dependent-and-independent-pathways
#15
Yanfang Xu, Hua-Bin Ma, Yu-Lu Fang, Zhi-Rong Zhang, Jing Shao, Mao Hong, Chao-Jun Huang, Jing Liu, Rui-Qing Chen
Cisplatin is a chemotherapeutic drug for treatment of many solid tumors. It has been shown to induce apoptosis and/or necrosis in different types of cancer cells. However, the underlying mechanisms remain elusive. In this study, we provide evidences that cisplatin induces necroptosis in receptor-interacting protein 3 (RIP3)-expressing cell lines, but not in cell lines lacking RIP3 protein expression. Deficiency of core components of necroptotic pathway, RIP1, RIP3, or mixed lineage kinase domain-like protein (MLKL) blocked cisplatin-induced cell death in L929 cells...
February 2017: Cellular Signalling
https://www.readbyqxmd.com/read/28060376/induction-of-necroptotic-cell-death-by-viral-activation-of-the-rig-i-or-sting-pathway
#16
Suruchi N Schock, Neha V Chandra, Yuefang Sun, Takashi Irie, Yoshinori Kitagawa, Bin Gotoh, Laurent Coscoy, Astar Winoto
Necroptosis is a form of necrotic cell death that requires the activity of the death domain-containing kinase RIP1 and its family member RIP3. Necroptosis occurs when RIP1 is deubiquitinated to form a complex with RIP3 in cells deficient in the death receptor adapter molecule FADD or caspase-8. Necroptosis may play a role in host defense during viral infection as viruses like vaccinia can induce necroptosis while murine cytomegalovirus encodes a viral inhibitor of necroptosis. To see how general the interplay between viruses and necroptosis is, we surveyed seven different viruses...
January 6, 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28059467/muty-dna-glycosylase-protects-cells-from-tumor-necrosis-factor-alpha-induced-necroptosis
#17
An Hue Vy Tran, Se Hee Han, Joon Kim, Francesca Grasso, Ye Sun Han
Numerous studies have implied that mutY DNA glycosylase (MYH) is involved in the repair of post-replicative mispairs and plays a critical role in the base excision repair pathway. Recent in vitro studies have shown that MYH interacts with tumor necrosis factor receptor type 1-associated death domain (TRADD), a key effector protein of tumor necrosis factor receptor-1 (TNFR1) signaling. The association between MYH and TRADD is reversed during tumor necrosis factor alpha (TNF-α)- and camptothecin (CPT)-induced apoptosis, and enhanced during TNF-α-induced survival...
January 6, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28039150/the-effects-and-regulatory-mechanism-of-rip3-on-rgc-5-necroptosis-following-elevated-hydrostatic-pressure
#18
Lei Shang, Wei Ding, Na Li, Lvshuang Liao, Dan Chen, Jufang Huang, Kun Xiong
Necroptosis is a type of regulated cell death that has been implicated in various diseases. Receptor-interacting protein 3 (RIP3), a member of the RIP family, is an important mediator of the necroptotic pathway. Cleavage of RIP3 at Asp328 by caspase-8 abolishes the kinase activity of RIP3, which is critical for necroptosis. Moreover, RIP3 is significantly upregulated during the early stages of acute high intra-ocular pressure and oxygen glucose deprivation. In this study, the effects of RIP3 during elevated hydrostatic pressure (EHP) were investigated and the possible mechanism through which caspase-8 regulated RIP3 cleavage was explored...
December 29, 2016: Acta Biochimica et Biophysica Sinica
https://www.readbyqxmd.com/read/28025046/camkii-is-a-nodal-signal-for-multiple-programmed-cell-death-pathways-in-heart
#19
Ning Feng, Mark E Anderson
Sustained Ca(2+)/calmodulin dependent kinase II (CaMKII) activation plays a central role in the pathogenesis of a variety of cardiac diseases. Emerging evidence suggests CaMKII evoked programmed cell death, including apoptosis and necroptosis, is one of the key underlying mechanisms for the detrimental effect of sustained CaMKII activation. CaMKII integrates β-adrenergic, Gq coupled receptor, reactive oxygen species (ROS), hyperglycemia, and pro-death cytokine signaling to elicit myocardial apoptosis by intrinsic and extrinsic pathways...
December 23, 2016: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/28004006/the-different-effects-of-atorvastatin-and-pravastatin-on-cell-death-and-parp-activity-in-pancreatic-nit-1-cells
#20
Ya-Hui Chen, Yi-Chun Chen, Chin-San Liu, Ming-Chia Hsieh
Statins have been widely used drugs for lowering low-density lipoprotein and for preventing heart attack and stroke. However, the increased risk for developing diabetes during extended stain use and the molecular mechanisms remain unclear. The objective of this study was to elucidate the signaling pathway and biological function between necrosis and autophagy induced by atorvastatin (AS) and pravastatin (PS). Here we observed that atorvastatin (AS) can increase intracellular reactive oxygen species (ROS) and induce necrotic cell death and autophagy in NIT-1 cells, whereas pravastatin (PS) does not cause ROS and cell death but also induces autophagy...
2016: Journal of Diabetes Research
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