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RIP3 or RIPK3

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https://www.readbyqxmd.com/read/28315674/dichotomy-between-receptor-interacting-protein-1-and-receptor-interacting-protein-3-mediated-necroptosis-in-experimental-pancreatitis
#1
Jianghong Wu, Tunike Mulatibieke, Jianbo Ni, Xiao Han, Bin Li, Yue Zeng, Rong Wan, Xingpeng Wang, Guoyong Hu
Pancreatic acinar cell necrosis and inflammatory responses are two key pathologic processes in acute pancreatitis (AP), which determines the severity and outcome of the disease. Recent studies suggest that necroptosis, a programed form of necrosis, is involved in the pathogenesis of AP, but the underlying mechanisms remain unknown. We investigated the expression of necrosome components, including receptor-interacting protein (RIP) 1, RIP3, and mixed lineage kinase domain-like (MLKL), and the molecular mechanisms in pancreatitis-associated necroptosis...
March 15, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28297660/progesterone-prevents-high-grade-serous-ovarian-cancer-by-inducing-necroptosis-of-p53-defective-fallopian-tube-epithelial-cells
#2
Na-Yiyuan Wu, Hsuan-Shun Huang, Tung Hui Chao, Hsien Ming Chou, Chao Fang, Chong-Zhen Qin, Chueh-Yu Lin, Tang-Yuan Chu, Hong Hao Zhou
High-grade serous ovarian carcinoma (HGSOC) originates mainly from the fallopian tube (FT) epithelium and always carries early TP53 mutations. We previously reported that tumors initiate in the FT fimbria epithelium because of apoptotic failure and the expansion of cells with DNA double-strand breaks (DSB) caused by bathing of the FT epithelial cells in reactive oxygen species (ROSs) and hemoglobin-rich follicular fluid (FF) after ovulation. Because ovulation is frequent and HGSOC is rare, we hypothesized that luteal-phase progesterone (P4) could eliminate p53-defective FT cells...
March 14, 2017: Cell Reports
https://www.readbyqxmd.com/read/28292903/mouse-cytomegalovirus-m36-and-m45-death-suppressors-cooperate-to-prevent-inflammation-resulting-from-antiviral-programmed-cell-death-pathways
#3
Lisa P Daley-Bauer, Linda Roback, Lynsey N Crosby, A Louise McCormick, Yanjun Feng, William J Kaiser, Edward S Mocarski
The complex interplay between caspase-8 and receptor-interacting protein (RIP) kinase RIP 3 (RIPK3) driving extrinsic apoptosis and necroptosis is not fully understood. Murine cytomegalovirus triggers both apoptosis and necroptosis in infected cells; however, encoded inhibitors of caspase-8 activity (M36) and RIP3 signaling (M45) suppress these antiviral responses. Here, we report that this virus activates caspase-8 in macrophages to trigger apoptosis that gives rise to secondary necroptosis. Infection with double-mutant ΔM36/M45mutRHIM virus reveals a signaling pattern in which caspase-8 activates caspase-3 to drive apoptosis with subsequent RIP3-dependent activation of mixed lineage kinase domain-like (MLKL) leading to necroptosis...
March 14, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28292463/key-players-of-the-necroptosis-pathway-ripk1-and-sirt2-are-altered-in-placenta-from-preeclampsia-and-fetal-growth-restriction
#4
Natalie J Hannan, Sally Beard, Natalie K Binder, Kenji Onda, Tu'uhevaha J Kaitu'u-Lino, Qi Chen, Laura Tuohey, Manarangi De Silva, Stephen Tong
INTRODUCTION: Preeclampsia (PE) and fetal growth restriction (FGR) are among the leading causes of perinatal morbidity and mortality. Placental insufficiency is central to these conditions. The mechanisms underlying placental insufficiency are poorly understood. Apoptosis has long been considered the only form of regulated cell death, recent research has identified an alternate process of programmed cell death known as necroptosis [1]. Necroptosis is distinct from apoptosis, relying on the deacetylase sirtuin-2 [2], receptor interacting kinases RIPK1 and 3, and the pseudokinase MLKL [3]...
March 2017: Placenta
https://www.readbyqxmd.com/read/28291959/the-opening-of-atp-sensitive-k-channels-protects-h9c2-cardiac-cells-against-the-high-glucose-induced-injury-and-inflammation-by-inhibiting-the-ros-tlr4-necroptosis-pathway
#5
Weijie Liang, Meiji Chen, Dongdan Zheng, Jianhao Li, Mingcai Song, Wenzhu Zhang, Jianqiang Feng, Jun Lan
BACKGROUND/AIMS: Hyperglycemia activates multiple signaling molecules, including reactive oxygen species (ROS), toll-like receptor 4 (TLR4), receptor-interacting protein 3 (RIP3, a kinase promoting necroptosis), which mediate hyperglycemia-induced cardiac injury. This study explored whether inhibition of ROS-TLR4-necroptosis pathway contributed to the protection of ATP-sensitive K+ (KATP) channel opening against high glucose-induced cardiac injury and inflammation. METHODS: H9c2 cardiac cells were treated with 35 mM glucose (HG) to establish a model of HG-induced insults...
February 22, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28289909/ripk1-ripk3-mlkl-mediated-necroptosis-contributes-to-compression-induced-rat-nucleus-pulposus-cells-death
#6
Songfeng Chen, Xiao Lv, Binwu Hu, Zengwu Shao, Baichuan Wang, Kaige Ma, Hui Lin, Min Cui
The aim of this study was to systematically investigate the role of necroptosis in compression-induced rat nucleus pulposus (NP) cells death, as well as explore the underlying mechanisms involved. Rat NP cells underwent various periods of exposure to 1.0 MPa pressure. Cell viability and cell death were quantified by using cell counting kit-8 (CCK-8), and Calcein-AM/propidium iodine (PI) staining respectively. Necroptosis-associated target molecules receptor-interacing protein kinase 1 (RIPK1), phosphorylated RIPK1 (pRIPK1), receptor-interacing protein kinase 3 (RIPK3), phosphorylated RIPK3 (pRIPK3) and mixed lineage kinase domain-like (MLKL) were analyzed by Western-blot and RT-PCR...
March 13, 2017: Apoptosis: An International Journal on Programmed Cell Death
https://www.readbyqxmd.com/read/28279333/dai-another-way-necroptotic-control-of-viral-infection
#7
Jason W Upton, William J Kaiser
Interrogation of murine cytomegalovirus (MCMV)-encoded cell-death suppressors revealed that necroptosis functions as a trap door to eliminate virally infected cells. This crucial host defense pathway is orchestrated by the sensing of infection by DAI/ZBP-1, engagement of the kinase RIPK3, and subsequent membrane permeablization by the pseudokinase MLKL.
March 8, 2017: Cell Host & Microbe
https://www.readbyqxmd.com/read/28273458/distinct-kinase-independent-role-of-ripk3-in-cd11c-mononuclear-phagocytes-in-cytokine-induced-tissue-repair
#8
Kenta Moriwaki, Sakthi Balaji, John Bertin, Peter J Gough, Francis Ka-Ming Chan
Receptor interacting protein kinase 3 (RIPK3) induces necroptosis, a type of regulated necrosis, through its kinase domain and receptor interacting protein (RIP) homotypic interaction motif (RHIM). In addition, RIPK3 has been shown to regulate NLRP3 inflammasome and nuclear factor κB (NF-κB) activation. However, the relative contribution of these signaling pathways to RIPK3-dependent inflammation in distinct immune effectors is unknown. To investigate these questions, we generated RIPK3-GFP reporter mice...
March 7, 2017: Cell Reports
https://www.readbyqxmd.com/read/28260985/involvement-of-necroptosis-a-newly-recognized-cell-death-type-in-steroid-induced-osteonecrosis-in-a-rabbit-model
#9
Toru Ichiseki, Shusuke Ueda, Yoshimichi Ueda, Masanobu Tuchiya, Ayumi Kaneuji, Norio Kawahara
We investigated the role of programmed necrosis (necroptosis), a newly recognized form of cell necrosis that has been implicated in the development of steroid-induced osteonecrosis. We used an osteonecrosis model in which 30 Japanese white rabbits each weighing 3.5kg were injected once with methylprednisolone at 20 mg/kg body weight into the right gluteal muscle. Ten animals killed 14 days thereafter were designated as S14d groups, while another 10 animals injected with necroptosis, a specific inhibitor of necrostatin-1 i...
2017: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/28260192/polyphyllin-d-a-steroidal-saponin-in-paris-polyphylla-induces-apoptosis-and-necroptosis-cell-death-of-neuroblastoma-cells
#10
Shunsuke Watanabe, Tatuya Suzuki, Fujio Hara, Toshihiro Yasui, Naoko Uga, Atuki Naoe
PURPOSE: Neuroblastoma is a refractory pediatric malignant solid tumor. The previous studies demonstrated that Polyphyllin D, the main constituent of Paris polyphylla, a traditional Chinese medicine, exerts an anti-tumor effect on many tumors. However, its effects against neuroblastomas are unclear. METHODS: We examined the anti-tumor effect of polyphyllin D in human neuroblastoma using IMR-32 and LA-N-2 cells, which exhibit MYCN gene amplification, and NB-69 cells, which do not exhibit MYCN gene amplification...
March 4, 2017: Pediatric Surgery International
https://www.readbyqxmd.com/read/28258062/the-linear-ubiquitin-chain-assembly-complex-regulates-trail-induced-gene-activation-and-cell%C3%A2-death
#11
Elodie Lafont, Chahrazade Kantari-Mimoun, Peter Draber, Diego De Miguel, Torsten Hartwig, Matthias Reichert, Sebastian Kupka, Yutaka Shimizu, Lucia Taraborrelli, Maureen Spit, Martin R Sprick, Henning Walczak
The linear ubiquitin chain assembly complex (LUBAC) is the only known E3 ubiquitin ligase which catalyses the generation of linear ubiquitin linkages de novo LUBAC is a crucial component of various immune receptor signalling pathways. Here, we show that LUBAC forms part of the TRAIL-R-associated complex I as well as of the cytoplasmic TRAIL-induced complex II In both of these complexes, HOIP limits caspase-8 activity and, consequently, apoptosis whilst being itself cleaved in a caspase-8-dependent manner. Yet, by limiting the formation of a RIPK1/RIPK3/MLKL-containing complex, LUBAC also restricts TRAIL-induced necroptosis...
March 3, 2017: EMBO Journal
https://www.readbyqxmd.com/read/28256219/mapping-the-broad-structural-and-mechanical-properties-of-amyloid-fibrils
#12
Guillaume Lamour, Roy Nassar, Patrick H W Chan, Gunes Bozkurt, Jixi Li, Jennifer M Bui, Calvin K Yip, Thibault Mayor, Hongbin Li, Hao Wu, Jörg A Gsponer
Amyloids are fibrillar nanostructures of proteins that are assembled in several physiological processes in human cells (e.g., hormone storage) but also during the course of infectious (prion) and noninfectious (nonprion) diseases such as Creutzfeldt-Jakob and Alzheimer's diseases, respectively. How the amyloid state, a state accessible to all proteins and peptides, can be exploited for functional purposes but also have detrimental effects remains to be determined. Here, we measure the nanomechanical properties of different amyloids and link them to features found in their structure models...
February 28, 2017: Biophysical Journal
https://www.readbyqxmd.com/read/28256024/rip3-deficiency-exacerbates-inflammation-in-dextran-sodium-sulfate-induced-ulcerative-colitis-mice-model
#13
Yu-Lin Xu, Hai-Lin Tang, Shi-Ying Zhu, Hao-Ran Peng, Zhong-Tian Qi, Wen Wang
Ulcerative colitis (UC) is a chronic intestinal inflammatory disease. The receptor-interacting protein kinase 3 (RIP3) was reported to be involved in many inflammatory disease. However, the mechanism of RIP3 in the pathogenesis of UC is still unclear. To investigate the effects and possible mechanism of RIP3 in UC pathogenesis, RIP3-/- mice was used in dextran sulfate sodium (DSS)-induced colitis model. It was found that by DSS-induced colitis, RIP3-/- mice showed significantly enhanced colitis symptoms, including increased weight loss, colon shortening, and colonic mucosa damage and severity, but decreased production of interleukin 6 and interleukin 1β...
March 2, 2017: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/28250973/mpp-induces-necrostatin-1-and-ferrostatin-1-sensitive-necrotic-death-of-neuronal-sh-sy5y-cells
#14
Keisuke Ito, Yutaka Eguchi, Yusuke Imagawa, Shuji Akai, Hideki Mochizuki, Yoshihide Tsujimoto
Regulation of cell death is potentially a powerful treatment modality for intractable diseases such as neurodegenerative diseases. Although there have been many reports about the possible involvement of various types of cell death in neurodegenerative diseases, it is still unclear exactly how neurons die in patients with these diseases, thus treatment strategies based on cell death regulation have not been established yet. To obtain some insight into the mechanisms of cell death involved in neurodegenerative diseases, we studied the effect of 1-methyl-4-phenylpyridinium (MPP+) on the human neuroblastoma cell line SH-SY5Y (a widely used model of Parkinson's disease)...
2017: Cell Death Discovery
https://www.readbyqxmd.com/read/28242694/receptor-interacting-protein-kinase-3-promotes-platelet-activation-and-thrombosis
#15
Yiwen Zhang, Jian Zhang, Rong Yan, Jingluan Tian, Yang Zhang, Jie Zhang, Mengxing Chen, Qingya Cui, Lili Zhao, Renping Hu, Miao Jiang, Zhenyu Li, Changgeng Ruan, Sudan He, Kesheng Dai
Previous studies have shown that receptor-interacting protein kinase 3 (RIP3) is involved in many important biological processes, including necroptosis, apoptosis, and inflammation. Here we show that RIP3 plays a critical role in regulating platelet functions and in vivo thrombosis and hemostasis. Tail bleeding times were significantly longer in RIP3-knockout (RIP3(-/-)) mice compared with their wild-type (WT) littermates. In an in vivo model of arteriole thrombosis, mice lacking RIP3 exhibited prolonged occlusion times...
February 27, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28238799/inhibition-of-drp1-hyper-activation-is-protective-in-animal-models-of-experimental-multiple-sclerosis
#16
Fucheng Luo, Karl Herrup, Xin Qi, Yan Yang
Multiple Sclerosis (MS), a leading neurological disorder of young adults, is characterized by the loss of oligodendrocytes (OLs), demyelination, inflammation and neuronal degeneration. Here we show that dynamin-related protein 1 (Drp1), a mitochondrial fission protein, is activated in primary OL cells exposed to TNF-α induced inflammation or oxidative stress, as well as in EAE-immunized and cuprizone toxicity-induced demyelinating mouse models. Inhibition of Drp1 hyper-activation by the selective inhibitor P110 abolishes Drp1 translocation to the mitochondria, reduces mitochondrial fragmentation and stems necrosis in primary OLs exposed to TNF-α and H2O2...
February 24, 2017: Experimental Neurology
https://www.readbyqxmd.com/read/28230861/ripk3-interactions-with-mlkl-and-camkii-mediate-oligodendrocytes-death-in-the-developing-brain
#17
Yi Qu, Jun Tang, Huiqing Wang, Shiping Li, Fengyan Zhao, Li Zhang, Q Richard Lu, Dezhi Mu
Oligodendrocyte progenitor cells (OPCs) death is a key contributor to cerebral white matter injury (WMI) in the developing brain. A previous study by our group indicated that receptor-interacting proteins (RIPs) are crucial in mediating necroptosis in developing neurons. However, whether this mechanism is involved in OPCs death is unclear. We aimed to explore the mechanisms of RIP-mediated oligodendrocytes (OLs) death in the developing brain. Oligodendrocytes necroptosis was induced by oxygen-glucose deprivation plus caspase inhibitor zVAD treatment (OGD/zVAD) in vitro...
February 23, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28205631/immature-mice-are-more-susceptible-than-adult-mice-to-acetaminophen-induced-acute-liver-injury
#18
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
#19
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/28197335/caspase-8-not-so-silently-deadly
#20
REVIEW
Rebecca Feltham, James E Vince, Kate E Lawlor
Apoptosis is a caspase-dependent programmed form of cell death, which is commonly believed to be an immunologically silent process, required for mammalian development and maintenance of cellular homoeostasis. In contrast, lytic forms of cell death, such as RIPK3- and MLKL-driven necroptosis, and caspase-1/11-dependent pyroptosis, are postulated to be inflammatory via the release of damage associated molecular patterns (DAMPs). Recently, the function of apoptotic caspase-8 has been extended to the negative regulation of necroptosis, the cleavage of inflammatory interleukin-1β (IL-1β) to its mature bioactive form, either directly or via the NLRP3 inflammasome, and the regulation of cytokine transcriptional responses...
January 2017: Clinical & Translational Immunology
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