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https://www.readbyqxmd.com/read/28703811/cytoplasmic-fragment-of-cd147-generated-by-regulated-intramembrane-proteolysis-contributes-to-hcc-by-promoting-autophagy
#1
Bo Wu, Jian Cui, Xiang-Min Yang, Zhen-Yu Liu, Fei Song, Ling Li, Jian-Li Jiang, Zhi-Nan Chen
Hepatocellular carcinoma (HCC) is one of the most lethal and prevalent cancers worldwide. CD147 (EMMPRIN or basigin) is a leading gene relating to hepatocarcinogenesis and metastasis, and is detected in transmembrane, exosome or circulating forms in HCC patients. The endosome recycling of CD147 further enhances the function of this oncoprotein from a dynamic perspective. However, previous studies about CD147 mainly focused on one separate form, and little attention has been paid to how the different forms of tumor-derived CD147 changes...
July 13, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28698139/11%C3%AE-hydroxysteroid-dehydrogenases-2-decreases-the-apoptosis-of-mc3t3-mlo-y4-cells-induced-by-glucocorticoids
#2
Hao Zhang, Fuling Zhou, Zhenyu Pan, Xiangpeng Bu, Yaoqing Wang, Fan Chen
The aim of the present study was to confirm the role of 11β-hydroxysteroid dehydrogenases type 2(11β-HSD-2) in steroid induced osteonecrosis of the femoral head(SANFH). We cultured mouse bone-like cells (MLO-Y4) and mouse osteoblast-like cells (MC3T3-E1). After overexpressed 11β-HSD-2 successfully, we induced cell apoptosis by dexamethasone (DXM). The level of cell apoptosis, the expression of Bcl-2 in MLO-Y4 cells and the expression of Fas and caspase8 in MC3T3-E1 cells were detected. Then, we constructed 11β-HSD-2 siRNA plasmid and represented it on MLO-Y4/MC3T3-E1 Cells, to down-regulate the 11β-HSD-2 expression...
July 8, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28283477/lung-epithelial-cell-focal-adhesion-kinase-signaling-inhibits-lung-injury-and-fibrosis
#3
Amanda K Wheaton, Manisha Agarwal, Shijing Jia, Kevin K Kim
Progressive pulmonary fibrosis is a devastating consequence of many acute and chronic insults to the lung. Lung injury leads to alveolar epithelial cell (AEC) death, destruction of the basement membrane, and activation of transforming growth factor-β (TGF-β). There is subsequent resolution of the injury and a coordinated and concurrent initiation of fibrosis. Both of these processes may involve activation of similar intracellular signaling pathways regulated in part by dynamic changes to the extracellular matrix...
May 1, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28138096/ptf1a-ela3l-cells-are-developmentally-maintained-progenitors-for-exocrine-regeneration-following-extreme-loss-of-acinar-cells-in-zebrafish-larvae
#4
Nicole Schmitner, Kenji Kohno, Dirk Meyer
The exocrine pancreas displays a significant capacity for regeneration and renewal. In humans and mammalian model systems, the partial loss of exocrine tissue, such as after acute pancreatitis or partial pancreatectomy induces rapid recovery via expansion of surviving acinar cells. In mouse it was further found that an almost complete removal of acinar cells initiates regeneration from a currently not well-defined progenitor pool. Here, we used the zebrafish as an alternative model to study cellular mechanisms of exocrine regeneration following an almost complete removal of acinar cells...
March 1, 2017: Disease Models & Mechanisms
https://www.readbyqxmd.com/read/28116144/retraction-mechanism-of-age-related-changes-of-bone-marrow-mesenchymal-stem-cells-in-senile-osteoporosis
#5
C Huang, G F Zhang, J Han, G J Liao, B G Zou
HASH(0x472c700)
March 31, 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28098405/shielding-engineered-islets-with-mesenchymal-stem-cells-enhance-survival-under-hypoxia
#6
Bhawna Chandravanshi, Ramesh Ramchandra Bhonde
In the present study we focused on the improvisation of islet survival in hypoxia.The Islet like cell aggregates (ICAs) derived from wharton's jelly mesenchymal stem cells (WJ MSC) were cultured with and without WJ MSC for 48 h in hypoxia and normoxia and tested for their direct trophic effect on β cell survival. The WJ MSCs themselves secreted insulin upon glucose challenge and expressed the pancreatic markers at both transcription and translational level (C-peptide, Insulin, Glucagon, and Glut 2). Direct contact of MSCs with ICAs facilitated highest viability under hypoxia as evidenced by fluorescein diacetate/propidium iodide and 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay...
September 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28078537/sirt2-mediated-foxo3a-deacetylation-drives-its-nuclear-translocation-triggering-fasl-induced-cell-apoptosis-during-renal-ischemia-reperfusion
#7
Yan Wang, Yu Mu, Xiaorui Zhou, Huaixue Ji, Xing Gao, Wen Wen Cai, Qiuhua Guan, Tie Xu
We have found that Fas/FasL-mediated "extrinsic" pathway promoted cell apoptosis induced by renal ischemic injury. This study is to elucidate the upstream mechanism regulating FasL-induced extrinsic pathway during renal ischemia/reperfusion. Results demonstrated that when SIRT2 was activated by renal ischemia/reperfusion, activated SIRT2 could bind to and deacetylate FOXO3a, promoting FOXO3a nuclear translocation which resulted in an increase of nuclear FOXO3a along with FasL expression and activation of caspase8 and caspase3, triggering cell apoptosis during renal ischemia/reperfusion...
April 2017: Apoptosis: An International Journal on Programmed Cell Death
https://www.readbyqxmd.com/read/28039440/delivery-of-sfit-1-engineered-mscs-in-combination-with-a-continuous-low-dose-doxorubicin-treatment-prevents-growth-of-liver-cancer
#8
Jian Niu, Yue Wang, Ji Wang, Liu Bin, Xin Hu
One important process in liver cancer growth and progression is angiogenesis. Vascular endothelial growth factor (VEGF) has the significant role in liver cancer angiogenesis. sFlt1 (soluble Fms-like tyrosine kinase-1) is the promising inhibitor of VEGF and can be used as the new method of inhibiting angiogenesis. MSCs (Mesenchymal stem cells) can infiltrate into tumor tissue and function as the efficient transgene delivery mediator. Here, we engineered murine MSCs to express sFlt1 and examined the anti-tumor effect of MSC- sFlt1 in combination with continues low-dose doxorubicin treatment...
December 28, 2016: Aging
https://www.readbyqxmd.com/read/27849634/inflammation-and-apoptosis-dual-mediator-role-for-toll-like-receptor-4-in-the-development-of-necrotizing-enterocolitis
#9
Yin Zhou, Yibo Li, Bin Zhou, Keling Chen, Zhaoying Lyv, Dongmei Huang, Bin Liu, Zhicheng Xu, Bo Xiang, Shuguang Jin, Xiaofeng Sun, Yuan Li
BACKGROUND: Necrotizing enterocolitis (NEC) is the leading cause of neonatal gastrointestinal mortality; effective interventions are lacking with limited understanding of the pathogenesis of NEC. The importance of Toll-like receptor 4 (TLR4) signaling in NEC is well documented; however, the potential mechanisms that regulate enterocyte inflammation and apoptosis remain unclear. The aim of this study was to characterize the role of TLR4-mediated inflammation and apoptosis in the development of NEC and to determine the major apoptotic pathways and regulators in the process...
January 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/27729409/caspase-mediated-apoptosis-induction-in-zebrafish-cerebellar-purkinje-neurons
#10
Thomas Weber, Kazuhiko Namikawa, Barbara Winter, Karina Müller-Brown, Ralf Kühn, Wolfgang Wurst, Reinhard W Köster
The zebrafish is a well-established model organism in which to study in vivo mechanisms of cell communication, differentiation and function. Existing cell ablation methods are either invasive or they rely on the cellular expression of prokaryotic enzymes and the use of antibiotic drugs as cell death-inducing compounds. We have recently established a novel inducible genetic cell ablation system based on tamoxifen-inducible Caspase 8 activity, thereby exploiting mechanisms of cell death intrinsic to most cell types...
November 15, 2016: Development
https://www.readbyqxmd.com/read/27647162/activation-of-adenosine-2a-receptor-inhibits-neutrophil-apoptosis-in-an-autophagy-dependent-manner-in-mice-with-systemic-inflammatory-response-syndrome
#11
Yang-Wuyue Liu, Ting Yang, Li Zhao, Zhenhong Ni, Nan Yang, Fengtian He, Shuang-Shuang Dai
Systemic inflammatory response syndrome (SIRS) is an overwhelming whole body inflammation caused by infectious diseases or sterile insults. Neutrophils are the dominant participants during inflammation, and their survival and death determine the initiation as well as resolution of SIRS. Apoptosis and autophagy are two fundamental cellular processes that modulating cell fate, but their correlation and regulators in neutrophils under SIRS condition have not been elucidated. In this study, we demonstrated that high dose of LPS induced both apoptosis and autophagy of neutrophils in a mouse SIRS model and LPS-stimulated neutrophils in vitro...
2016: Scientific Reports
https://www.readbyqxmd.com/read/27633890/evaluation-of-paclitaxel-effects-in-the-pattern-of-expression-of-survival-and-apoptotic-genes-regulators-in-hela-cells
#12
Ugur Serbes, Ozlem D Ozsoylemez, Gul Ozcan
We aim to determine the regulation of apoptosis by paclitaxel-induced and understand cancer dynamics to treatment targets for HeLa cells by identifying decrease/increase genes expression on HeLa cells. In this study, the anti-tumor effects of Paclitaxel (PAC) on HeLa cells have been studied in order to determine the cellular and molecular mechanisms of these effects. PAC has been applied to HeLa cells in 6 different doses (3, 7.5, 15, 30, 60, 120 nM) for 48 hours and the IC50 dose MTT method, has been determined with apoptic index (AI) DAPI...
2016: Current Pharmaceutical Biotechnology
https://www.readbyqxmd.com/read/27604105/a-novel-regulatory-network-among-lncrpa-circrar1-mir-671-and-apoptotic-genes-promotes-lead-induced-neuronal-cell-apoptosis
#13
Aruo Nan, Lijian Chen, Nan Zhang, Zhenzhong Liu, Ti Yang, Zhishan Wang, Chengfeng Yang, Yiguo Jiang
Lead is a metal that has toxic effects on the developing nervous system. However, the mechanisms underlying lead-induced neurotoxicity are not well understood. Non-coding RNAs (ncRNAs) play an important role in epigenetic regulation, but few studies have examined the function of ncRNAs in lead-induced neurotoxicity. We addressed this in the present study by evaluating the functions of a long non-coding RNA (named lncRpa) and a circular RNA (named circRar1) in a mouse model of lead-induced neurotoxicity. High-throughput RNA sequencing showed that both lncRpa and circRar1 promoted neuronal apoptosis...
April 2017: Archives of Toxicology
https://www.readbyqxmd.com/read/27509965/induction-of-human-hepatocellular-carcinoma-hepg2-cell-apoptosis-by-naringin
#14
Ratana Banjerdpongchai, Benjawan Wudtiwai, Patompong Khawon
Naringin, a bioflavonoid found in Citrus seeds, inhibits proliferation of cancer cells. The objectives of this study were to investigate the mode and mechanism(s) of hepatocellular carcinoma HepG2 cell death induced by naringin. The cytotoxicity of naringin towards HepG2 cells proved dosedependent, measured by MTT assay. Naringintreated HepG2 cells underwent apoptosis also in a concentration related manner, determined by annexin Vfluorescein isothiocyanate (FITC) and propidium iodide (PI) employing flow cytometry...
2016: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/27509964/phytochemicals-from-goniothalamus-griffithii-induce-human-cancer-cell-apoptosis
#15
Ratana Banjerdpongchai, Patompong Khawon, Wialrt Pompimon
Bioactive compounds extracted from leaves and twigs of Goniothalamus griffithii include pinocembrin (PCN) and goniothalamin (GTN). The objectives of this study were to investigate the cytotoxic activities of PCN and GTN and their influence on molecular signaling for cell death in several human cancer cell lines compared to normal murine fibroblast NIH3T3 cells. GTN exhibited the most potent cytotoxicity against MCF7 > HeLa > HepG2 > NIH3T3 cells with IC50 values of 7.33, 14.8, 37.1 and 65.4 μM, respectively, whereas PCN was cytotoxic only to HepG2 cells with IC50 values of ~80 μM...
2016: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/27358149/mechanism-of-age-related-changes-of-bone-marrow-mesenchymal-stem-cells-in-senile-osteoporosis
#16
C Huang, G F Zhang, J Han, G J Liao, B G Zou
This study was carried out to explore the age-related changes of bone marrow mesenchymal stem cells (BMMSCs) in mice as well as the influence of autophagy on the age-related changes of BMMSCs. BMMSCs aging-associated protein acetylation P53, P21 and P16 expressions in young and senile mice, protein expression of telomerase reverse transcriptase (TERT) as well as reactive oxygen species (ROS) level were detected and compared; the expression of BMMSCs autophagy associated gene, autophagy related protein molecule and LC3 molecule were detected; the influence of differently concentrated rapamycin and 3-MA on BMMSCs autophagy level was observed to select effective concentrations; the influence of rapamycin and 3-MA on BMMSCs cell cycle-related gene expression, apoptosis related gene expression and ROS level were discussed...
April 2016: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/27014180/rapid-eye-movement-sleep-deprivation-induces-neuronal-apoptosis-by-noradrenaline-acting-on-alpha1-adrenoceptor-and-by-triggering-mitochondrial-intrinsic-pathway
#17
Bindu I Somarajan, Mudasir A Khanday, Birendra N Mallick
Many neurodegenerative disorders are associated with rapid eye movement sleep (REMS) loss; however, the mechanism was unknown. As REMS loss elevates noradrenaline (NA) level in the brain as well as induces neuronal apoptosis and degeneration, in this study, we have delineated the intracellular molecular pathway involved in REMS deprivation (REMSD)-associated NA-induced neuronal apoptosis. Rats were REMS deprived for 6 days by the classical flower pot method; suitable controls were conducted and the effects on apoptosis markers evaluated...
2016: Frontiers in Neurology
https://www.readbyqxmd.com/read/27013583/mir-424-and-mir-27a-increase-trail-sensitivity-of-acute-myeloid-leukemia-by-targeting-plag1
#18
Yan-Ping Sun, Fei Lu, Xiao-Yu Han, Min Ji, Ying Zhou, A-Min Zhang, Hong-Chun Wang, Dao-Xin Ma, Chun-Yan Ji
Although microRNAs have been elaborated to participate in various physiological and pathological processes, their functions in TRAIL resistance of acute myeloid leukemia (AML) remain obscure. In this study, we detected relatively lower expression levels of miR-424&27a in TRAIL-resistant and semi-resistant AML cell lines as well as newly diagnosed patient samples. Overexpression of miR-424&27a, by targeting the 3'UTR of PLAG1, enhanced TRAIL sensitivity in AML cells. Correspondingly, knockdown of PLAG1 sensitized AML cells to TRAIL-induced apoptosis and proliferation inhibition...
May 3, 2016: Oncotarget
https://www.readbyqxmd.com/read/26635787/mechanisms-of-microbe-host-interaction-in-crohn-s-disease-dysbiosis-vs-pathobiont-selection
#19
REVIEW
Ludovica F Buttó, Monika Schaubeck, Dirk Haller
Crohn's disease (CD) is a systemic chronic inflammatory condition mainly characterized by discontinuous transmural pathology of the gastrointestinal tract and frequent extraintestinal manifestations with intermittent episodes of remission and relapse. Genome-wide association studies identified a number of risk loci that, catalyzed by environmental triggers, result in the loss of tolerance toward commensal bacteria based on dysregulated innate effector functions and antimicrobial defense, leading to exacerbated adaptive immune responses responsible for chronic immune-mediated tissue damage...
2015: Frontiers in Immunology
https://www.readbyqxmd.com/read/26447626/-effect-and-mechanism-of-ginsenoside-rg1-as-an-alcoholic-hepatitis-treatment-in-a-rat-model
#20
Shu Liu, Wenxiang Huang, Xiaojuan Xin, Jinqiu Zhao, Zhengyu Shi, Chengwei Liu, Jun Tang
OBJECTIVE: To observe the effect of Rgl treatment on prognosis of alcoholic hepatitis using a rat model. METHODS: Female Sprague-Dawley rats were radomly divided into four groups:unmodeled control, untreated model, Rgl-treated model, and dexamethasone (DXM)-treated model. The model groups were generated by intragastric injection of alcohol. The unmodeled control group was given an equal dosage of normal saline by the same route. After model establishment, the Rg1 treatment group and the DXM treatment group were administered a 120-hour treatment of Rgl or DXM; the unmodeled controls were administered normal saline on the same schedule...
August 2015: Zhonghua Gan Zang Bing za Zhi, Zhonghua Ganzangbing Zazhi, Chinese Journal of Hepatology
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