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T Weber, K Namikawa, B Winter, K Müller-Brown, R Kühn, W Wurst, R W Köster
The zebrafish is a well-established model organism to study in vivo mechanisms of cell communication, differentiation and function. Existing cell ablation methods are either invasive thereby creating additional tissue damage and potential infection sites, 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 that is based on Tamoxifen-inducible Caspase8-activity, thereby exploiting mechanisms of cell death intrinsic to most cell types...
October 11, 2016: Development
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
Uğur Serbes, Özlem Dağdeviren Özsöylemez, Gül Özcan
We aim to determine the regulation of apoptosis by paclitaxel-induced and understand cancer dynamics to treatment targets for HeLa cells by identifying of 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...
September 14, 2016: Current Pharmaceutical Biotechnology
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...
September 7, 2016: Archives of Toxicology
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
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
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
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
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
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
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
Yan Yang, Xiangdong Sun, Yuehua Yang, Xi Yang, Hongcheng Zhu, Shengbin Dai, Xiaochen Chen, Hao Zhang, Qing Guo, Yaqi Song, Feng Wang, Hongyan Cheng, Xinchen Sun
Radiotherapy is a widespread treatment in human solid tumors. However, therapy resistance and poor prognosis are still problems. Gambogic acid (GA), extracted from the dried yellow resin of gamboges, has an anticancer effect against various types of cancer cells. To explore the radiosensitivity of GA on esophageal cancer cell line TE13, cell viability was tested by Cell Counting Kit-8 (CCK-8) assay, colony formation assay was used to assess the effects of GA on the radiosensitivity of TE13, and flow cytometry was performed to meter the percentage of apoptosis...
February 2016: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
Pei Shen, Hong Zhang, Zhaoliang Su, Shengjun Wang, Huaxi Xu
Tumor necrosis factor α-induced protein 8 (TNFAIP8)-like protein 1 (TIPE1) was a member of TNFAIP8 family. Previous studies have shown that TIPE1 could induce apoptosis in hepatocellular carcinoma. In this study, we attempted to predict its potential structure. Bioinformatic analysis of TIPE1 was performed to predict its potential structure using the bioinfomatic web services or softwares. The results showed that the amino acid sequences of TIPE1 were well conserved in mammals. No signal peptide and no transmembrane domain existed in human TIPE1...
2015: PloS One
Hongsong Yu, Le Luo, Lili Wu, Minming Zheng, Lijun Zhang, Yunjia Liu, Hua Li, Qingfeng Cao, Aize Kijlstra, Peizeng Yang
Previous studies have identified that disturbed apoptosis was involved in the pathogenesis of Behçet disease (BD) and Vogt-Koyanagi-Harada (VKH) syndrome. This study aims to investigate whether copy number variations of apoptosis-related genes, including FAS, CASPASE8, CASPASE3, and BCL2, are associated with BD and VKH syndrome in Han Chinese. A two-stage association study was performed in 1,014 BD patients, 1,051 VKH syndrome patients, and 2,076 healthy controls. TaqMan(®) Copy Number Assays and real-time PCR were performed...
November 2015: Human Mutation
Mahbuba Rahman, Annie P K Chan, Michelle J Tang, Isabella T Tai
No abstract text is available yet for this article.
2015: PloS One
Katrin Scheit, Georg Bauer
Salicylic acid and anthocyanidins are known as plant-derived antioxidants, but also can provoke paradoxically seeming prooxidant effects in vitro. These prooxidant effects are connected to the potential of salicylic acid and anthocyanidins to induce apoptosis selectively in tumor cells in vitro and to inhibit tumor growth in animal models. Several epidemiological studies have shown that salicylic acid and its prodrug acetylsalicylic acid are tumor-preventive for humans. The mechanism of salicylic acid- and anthocyanidin-dependent antitumor effects has remained enigmatic so far...
March 2015: Carcinogenesis
Yongbo Zhao, Guangxing Feng, Yanzhi Wang, Yuehong Yue, Weichao Zhao
OBJECTIVE: Long non-coding RNAs (lncRNAs) play important roles in diverse biological processes, such as transcriptional regulation, cell growth and tumorigenesis. However, little was known about whether lncRNA HIF 1 alpha-antisense RNA 1 (HIF1a-AS1) in regulating the proliferation and apoptosis of VSMCs in vitro and the expression of HIF1a-AS1 in serum of TAA patients. METHODS: The cell viability was detected by the CCK8 assay. The cell apoptosis was assessed by annexin V-PI double-labeling staining...
2014: International Journal of Clinical and Experimental Pathology
Dan Zhang, Jingyi Li, Gufeng Xu, Runjv Zhang, Chengliang Zhou, Yeqing Qian, Yifeng Liu, Luting Chen, Bo Zhu, Xiaoqun Ye, Fan Qu, Xinmei Liu, Shuai Shi, Weijun Yang, Jianzhong Sheng, Hefeng Huang
It is widely believed that endometrial atrophy in postmenopausal women is due to an age-related reduction in estrogen level. But the role of high circulating follicle-stimulating hormone (FSH) in postmenopausal syndrome is not clear. Here, we explored the role of high circulating FSH in physiological endometrial atrophy. We found that FSH exacerbated post-OVX endometrial atrophy in mice, and this effect was ameliorated by lowering FSH with Gonadotrophin-releasing hormone agonist (GnRHa). In vitro, FSH inhibited endometrial proliferation and promoted the apoptosis of primary cultured endometrial cells in a dose-dependent manner...
April 2015: Aging Cell
Mina Jafarabadi, Maasoume Abdollahi, Mojdeh Salehnia
PURPOSE: The aim of this study was the investigation of caspase-3/7 activity and apoptosis related gene expression after vitrification and xenotransplantation of human ovarian fragments. METHODS: Ovarian specimens were obtained from normal female-to-male transsexual women during laparoscopic surgery and cut into small pieces and were considered as vitrified and non-vitrified groups. The morphological study, terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) assay, caspase-3/7 activity and apoptosis related gene expression analysis were done in both non-vitrified and vitrified groups in two steps (before transplantation of ovarian tissues and 30 days after transplantation)...
February 2015: Journal of Assisted Reproduction and Genetics
You Cheng Zhang, Liu Qing Guo, Xiao Chen, Gen Nian Wang, Ri Ni, Man Cai Wang, Feng Xian Wei
Death receptor 3 (DR3) belongs to the tumor necrosis factor (TNF) receptor superfamily, primarily found in lymphoid tissues. Reports have determined that DR3 may also be distributed in numerous types of tumors. Therefore, it is thought that DR3 may have an important role in the process of tumorigenesis. The aim of the present study was to observe the effect of silencing DR3 expression on hepatocarcinoma cell growth, apoptosis and invasion in order to elucidate the role of DR3 in tumor development. The hepatocarcinoma cell lines (HepG2, Huh7, SMMC7721 and Bel‑7402) and normal human liver cells (HL‑7702) were transfected with three stealth RNA interference (RNAi) sequences that target the DR3 gene...
February 2015: Molecular Medicine Reports
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