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Total 41 results found since Jan 2013.

Regulation of Chromatin Assembly and Cell Transformation by Formaldehyde Exposure in Human Cells
Conclusions: We propose that the inhibition of chromatin assembly represents a novel mechanism of cell transformation induced by the environmental and occupational chemical carcinogen FA. https://doi.org/10.1289/EHP1275 Received: 25 October 2016 Revised: 19 May 2017 Accepted: 23 May 2017 Published: 21 September 2017 Address correspondence to C. Jin, Dept. of Environmental Medicine, New York University School of Medicine, 57 Old Forge Rd., Tuxedo Park, NY 10987 USA. Telephone: (845) 731-3602. Email: Chunyuan.jin@nyumc.org *Current affiliation: Medical School of Nanjing University, Nanjing, China. †Current affiliatio...
Source: EHP Research - September 21, 2017 Category: Environmental Health Authors: Daniil Lyalko Tags: Research Source Type: research

Complement C5b-9 and Cancer: Mechanisms of Cell Damage, Cancer Counteractions, and Approaches for Intervention
In conclusion, osmotic burst of inflated complement-damaged cells may occur, but these bursts are most likely a consequence of metabolic collapse of the cell rather than the cause of cell death. The Complement Cell Death Mediator: A Concerted Action of Toxic Moieties Membrane pores caused by complement were first visualized by electron microscopy on red blood cell membranes as large ring structures (22). Similar lesions were viewed on E. coli cell walls (23). Over the years, ample information on the fine ultrastructure of the MAC that can activate cell death has been gathered (24) and has been recently further examined (...
Source: Frontiers in Immunology - April 9, 2019 Category: Allergy & Immunology Source Type: research

Role of Annexin A5 in Cisplatin-induced Toxicity Cell Biology
In this study, we aimed to verify the function of annexin A5 in the apoptosis of renal epithelial cells. Real-time PCR and Western blot analysis, together with immunofluorescence analysis, showed that the expression of annexin A5 significantly increased in the presence of cisplatin in both human and rat renal epithelial cells. With regard to the mechanism of cisplatin-induced apoptosis, apoptosis-inducing factor (AIF) release into the cytosol was observed, and the underlying mechanism was identified as voltage-dependent anion channel (VDAC) oligomerization. Mitochondrial membrane potential (Δψm) was found to be greatly d...
Source: Journal of Biological Chemistry - January 24, 2014 Category: Chemistry Authors: Jeong, J.-J., Park, N., Kwon, Y.-J., Ye, D.-J., Moon, A., Chun, Y.-J. Tags: Molecular Bases of Disease Source Type: research

Contribution of protein kinase Cα in the stimulation of insulin by the down-regulation of Ca v β subunits
We examined whether other types of Cavβ subunits also have similar properties. In this regard, we used small interfering RNA (siRNA) of these subunits (20 μg each) to down-regulate them and examined blood glucose, serum insulin and PKC translocation in isolated pancreatic β cells of mice. While the down-regulation of Cavβ2 and β3 subunits increased serum insulin levels and caused efficient glucose homeostasis, the down-regulation of Cavβ1 and β4 subunits failed to affect both these parameters. Examination of PKC isozymes in the pancreatic β-cells of Cavβ2- or β3 siRNA-injected mice showed that three PKC isozymes...
Source: Endocrine - October 23, 2014 Category: Endocrinology Source Type: research

Role of the parathyroid hormone type 1 receptor (PTH1R) as a mechanosensor in osteocyte survival
This article is protected by copyright. All rights reserved
Source: Journal of Bone and Mineral Research - December 1, 2014 Category: Orthopaedics Authors: Marta Maycas, Juan A. Ardura, Luis Fernández de Castro, Beatriz Bravo, Arancha R. Gortázar, Pedro Esbrit Tags: Original Article Source Type: research

TLR4/NF- κB/Ceramide signaling contributes to Ox-LDL-induced calcification of human vascular smooth muscle cells.
In conclusion, these findings suggest that TLR4 regulates VSMC calcification induced by Ox-LDL through activation of NK-κB, highlighting the critical role of TLR4/NK-κB signaling in vascular calcification. PMID: 27876618 [PubMed - as supplied by publisher]
Source: European Journal of Pharmacology - November 18, 2016 Category: Drugs & Pharmacology Authors: Song Y, Hou M, Li Z, Luo C, Ou JS, Yu H, Yan J, Lu L Tags: Eur J Pharmacol Source Type: research

Khz-cp (crude polysaccharide extract obtained from the fusion of Ganoderma lucidum and Polyporus umbellatus mycelia) induces apoptosis by increasing intracellular calcium levels and activating P38 and NADPH oxidase-dependent generation of reactive oxygen species in SNU-1 cells
Conclusions: In summary, these data indicate that Khz-cp preferentially induces apoptosis in cancer cells and that the signaling mechanisms involve an increase in [Ca2+]i, P38 activation, and ROS generation via NADPH oxidase and mitochondria.
Source: BMC Complementary and Alternative Medicine - July 10, 2014 Category: Complementary Medicine Authors: Tae KimJu KimZoo KimRen HuangYoung ChaeRen Wang Source Type: research

RANK Deficiency Ameliorates Podocyte Injury by Suppressing Calcium/Calcineurin/ NFATc1 Signaling
Conclusion: Our findings demonstrated that RANK deficiency ameliorates podocyte injury by suppressing calcium/calcineurin/NFATc1 signaling, which may present a promising target for therapeutic intervention.Kidney Blood Press Res 2018;43:1149 –1159
Source: Kidney and Blood Pressure Research - July 23, 2018 Category: Urology & Nephrology Source Type: research

Piezo1 mediates endothelial atherogenic inflammatory responses via regulation of YAP/TAZ activation
AbstractThe vascular endothelium plays a key role in the pathobiology of atherosclerotic cardiovascular disease. Endothelial cell Piezo1 mediates blood vessel formation, angiogenesis and regulation of blood pressure. However, changes of Piezo1 expression in atherosclerosis (AS) and the role of Piezo1 in the progression of atherosclerotic diseases remains obscure. Thus, the current study is to elucidate the role and mechanism of which Piezo1 mediates vascular inflammation in atherosclerotic mice and vascular endothelial inflammation induced by oxidized low density lipoprotein (ox-LDL) in vitro. Here, we have shown that the ...
Source: Human Cell - January 1, 2022 Category: Cytology Source Type: research

The Weakened Interaction Between HECTD4 and GluN2B in Ischemic Stroke Promotes Calcium Overload and Brain Injury Through a Mechanism Involving the Decrease of GluN2B and MALT1 Ubiquitination
This study explores the relationship between HECTD4, GluN2B, and MALT1, focusing on their role in brain injury in ischemic stroke. Rats were subjected to 2  h-ischemia followed by 24-h reperfusion to establish an ischemic stroke model. We observed the downregulation of HECTD4 and the upregulation of MALT1. Additionally, an increased GluN2B phosphorylation was concomitant with weakened interactions between HECTD4 and GluN2B, followed by decreased stria tal-enriched protein phosphatase (STEP61). Knockdown of HECTD4 exacerbated hypoxia- or NMDA-induced injury in nerve cells coincident with a decrease in GluN2B and MALT1 ubiq...
Source: Molecular Neurobiology - February 4, 2023 Category: Neurology Source Type: research

Integrated proteomics identified novel activation of dynein IC2-GR-COX-1 signaling in NF1 disease model cells.
Abstract Neurofibromatosis type 1 (NF1) tumor suppressor gene product, neurofibromin, functions in part as a Ras-GAP, and though its loss is implicated in the neuronal abnormality of NF1 patients, its precise cellular function remains unclear. To study the molecular mechanism of NF1 pathogenesis, we prepared NF1 gene knockdown (KD) PC12 cells, as a NF1 disease model, and analyzed their molecular (gene and protein) expression profiles with a unique integrated proteomics approach, comprising iTRAQ, 2D-DIGE, and DNA microarrays, using an integrated protein/gene expression analysis chart (iPEACH). In NF1-KD PC12 cells...
Source: Molecular and Cellular Proteomics : MCP - January 28, 2013 Category: Molecular Biology Authors: Hirayama M, Kobayashi D, Mizuguchi S, Morikawa T, Nagayama M, Midorikawa U, Wilson MM, Nambu AN, Yoshizawa AC, Kawano S, Araki N Tags: Mol Cell Proteomics Source Type: research

Acid-sensing ion channel 1a is involved in acid-induced osteoclastogenesis by regulating activation of the transcription factor NFATc1
Highlights: Abstract: It has been known that osteoclastogenesis is induced by extracellular acidosis-evoked the rise of intracellular calcium ([Ca2+]i), which regulate activation of the transcription factor nuclear factor of activated T cells c1 (NFATc1). However, the acid-sensing ion channels (ASICs) involved remain largely unknown. Here, we show that ASIC1a, ASIC1b, ASIC2a, and ASIC3 are expressed in rat osteoclasts, and only ASIC1a is highly upregulated in response to acidosis. Both the ASIC1a-specific blocker PcTX1 and specific siRNA significantly reduce this increase in acid-induced [Ca2+]i and acid-induced nuclear tr...
Source: FEBS Letters - August 28, 2013 Category: Biochemistry Authors: Xia Li, Rui-Sheng Xu, Dong-Lin Jiang, Xin-Long He, Chen Jin, Wei-Guo Lu, Qiang Su, Feng-Lai Yuan Tags: Research Letters Source Type: research

RNAi-mediated silencing of MLL-AF9 reveals leukemia-associated downstream targets and processes
Conclusion: Besides potential new therapeutic targets, the described transcription profile shaped by MLL-AF9 provides an information source into the molecular processes altered in MLL aberrant leukemia.
Source: Molecular Cancer - February 11, 2014 Category: Cancer & Oncology Authors: Katrin FleischmannPhilipp PagelIrene SchmidAdelbert Roscher Source Type: research

Effects of hyperbaric oxygen on the osteogenic differentiation of mesenchymal stem cells
Conclusion: HBO treatment increased osteogenic differentiation of MSCs via regulating Wnt processing, secretion, and signaling.
Source: BMC Musculoskeletal Disorders - February 25, 2014 Category: Orthopaedics Authors: Song-Shu LinSteve UengChi-Chien NiuLi-Jen YuanChuen-Yung YangWen-Jer ChenMel LeeJan-Kan Chen Source Type: research