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https://www.readbyqxmd.com/read/29783159/fas-fasl-interaction-mediates-imbalanced-cytokine-cytotoxicity-responses-of-inkt-cells-against-jurkat-cells
#1
Rui Dou, Zhenya Hong, Xiaosheng Tan, Fenfen Hu, Yajie Ding, Wei Wang, Zhihui Liang, Rongrong Zhong, Xiongwen Wu, Xiufang Weng
The rapid antitumor cytokine production and direct cytotoxicity confer invariant NKT (iNKT) cells ideal candidates for cancer therapy. However, the therapeutic potential of iNKT cells in T-cell malignant diseases remains elusive, as antigen presentation by T cells (T-T presentation) has been suggested to induce hyporesponsiveness of iNKT cells. In this study, we found discrepancies in iNKT cell responses against two T cell-origin cell lines (Jurkat and Molt-4). Human iNKT cells exhibited more intensive cytotoxicity and less efficient cytokine production in response to Fas-bearing Jurkat cells than those to the Fas-negative tumor cells (Molt-4 and myeloid-derived K562)...
May 18, 2018: Molecular Immunology
https://www.readbyqxmd.com/read/29781316/fas-and-fasl-genetic-polymorphisms-in-women-with-recurrent-pregnancy-loss-a-case-control-study
#2
Ae Ra Han, Young Min Choi, Min A Hong, Jin Ju Kim, Sung Ki Lee, Kwang Moon Yang, Eun Chan Paik, Hyeon Jeong Jeong, Jong Kwan Jun
Aberrant apoptosis at the trophoblast-maternal interface and abnormal expression of Fas and Fas ligand (FasL) have been reported in complicated pregnancies with recurrent pregnancy losses (RPL) and preeclampsia. We assessed the prevalence of Fas and FasL genetic polymorphisms in Korean women with RPL and in fertile controls. In total, 306 women with RPL and 298 fertile controls were enrolled. Genotype distributions of Fas and FasL in RPL patients versus fertile controls were examined under the Hardy-Weinberg equilibrium...
May 20, 2018: Human Fertility: Journal of the British Fertility Society
https://www.readbyqxmd.com/read/29770949/selenium-ameliorates-afb-1-induced-excess-apoptosis-in-chicken-splenocytes-through-death-receptor-and-endoplasmic-reticulum-pathways
#3
Jing Fang, Panpan Zhu, Zhuangzhi Yang, Xi Peng, Zhicai Zuo, Hengmin Cui, Ping Ouyang, Gang Shu, Zhengli Chen, Chao Huang, Wentao Liu
Aflatoxin B1 (AFB1 ) can cause hepatotoxicity, genotoxicity, and immunosuppressive effects for a variety of organisms. Selenium (Se), as an essential nutrient element, plays important protective effects against cell apoptosis induced by AFB1 . This research aimed to reveal the ameliorative effects of selenium on AFB1 -induced excess apoptosis in chicken splenocytes through death receptor and endoplasmic reticulum pathways in vivo. Two hundred sixteen neonatal chickens, randomized into four treatments, were fed with basal diet (control treatment), 0...
May 16, 2018: Biological Trace Element Research
https://www.readbyqxmd.com/read/29770156/probing-into-the-mechanism-of-alkaline-citrus-extract-promoted-apoptosis-in-pulmonary-fibroblasts-of-bleomycin-induced-pulmonary-fibrosis-mice
#4
Qi Wu, Yao Zhou, Fan-Chao Feng, Yi-Han Jin, Zhi-Chao Wang, Xian-Mei Zhou
We extracted the primary pulmonary fibroblasts of the normal and bleomycin-induced pulmonary fibrosis mice and investigated the functioning mechanism of citrus alkaline extract (CAE) in the induction of pulmonary fibroblast apoptosis. The expression intensity of vimentin of the pulmonary fibroblasts in the model mice was higher than that in the normal mice. Meanwhile, the positive expression rate and expression intensity of alpha smooth muscle actin ( α -SMA) of the pulmonary fibroblasts in the model mice were higher than those in the normal mice...
2018: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/29754448/periodontal-infection-with-porphyromonas-gingivalis-induces-preterm-birth-and-lower-birth-weight-in-rats
#5
Shanshan Liang, Hongyu Ren, Haiying Guo, Wenyan Xing, Chang Liu, Yaoting Ji, Han Jiang, Ping Zhang, Minquan Du
Preterm birth (PTB), accompanied by low birth weight (LBW) or not, is a syndrome with tremendous risk factors and long-term health consequences for children. In recent decades, overwhelming studies have shown that periodontitis contributes to prematurity and LBW. This study was conducted to determine the link between maternal periodontitis and the pathogenesis of PTB and/or LBW through a rat infection model induced by Porphyromonas gingivalis, an important periodontopathic bacterium. The murine model was established by surgically ligating the left mandibular 1st molars and inoculating with P...
May 13, 2018: Molecular Oral Microbiology
https://www.readbyqxmd.com/read/29752615/effects-of-simvastatin-on-the-function-of-splenic-cd4-and-cd8-t-cells-in-sepsis-mice
#6
Bingbing Kong, Xiaofeng Wang, Wenping Yang, Xin Zhao, Rong Zhang, Yu Wang
Simvastatin may be beneficial for treating sepsis due to its immune-regulating properties, although the mechanisms remain elusive. Herein, we hypothesized simvastatin may attenuate T cell dysfunction induced by sepsis. To test this hypothesis, we used a model based on cecal ligation and puncture (CLP) to induce sepsis in mice. Male C57BL/6 mice were pre-treated with simvastatin (0.2 μg/g of body weight) before CLP. The expression of B and T lymphocyte attenuator (BTLA) on splenic CD4+ T cells and T cell apoptosis, CD4+ and CD8+ T cells were quantified by flow cytometry...
May 11, 2018: Immunologic Research
https://www.readbyqxmd.com/read/29751513/-lactobacillus-casei-strain-shirota-enhances-the-in-vitro-antiproliferative-effect-of-geniposide-in-human-oral-squamous-carcinoma-hsc-3-cells
#7
Yu Qian, Jia-Le Song, Peng Sun, Ruokun Yi, Honglin Liu, Xia Feng, Kun-Young Park, Xin Zhao
This study investigated the enhanced antiproliferative effect of Lactobacillus casei strain Shirota (LcS) on geniposide actions in human oral squamous carcinoma HSC-3 cells. An MTT assay, flow cytometry, qPCR assay, western blot and HPLC were used for this study. The concentration of 1.0 × 10⁶ CFU/mL of LcS had no effect on the HOK normal oral epithelial cells and HSC-3 cancer cells. The 25 and 50 µg/mL geniposide concentrations also had no impact on HOK normal oral epithelial cells, but they had remarkable inhibitory effects on the growth of HSC-3 cancer cells, which are enhanced in the presence of LcS...
May 3, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29749527/purple-sweet-potato-anthocyanin-exerts-antitumor-effect-in-bladder-cancer
#8
Wei-Lin Li, Hong-Yuan Yu, Xian-Jun Zhang, Mang Ke, Tao Hong
Bladder cancer (BC) is the most common malignant disease. The developing of economically sustainable and available agents for the treatment of BC is required. Purple sweet potato anthocyanin (PSPA) has been shown to have antitumor abilities. The present study aimed to evaluate the potential role of PSPA in BC treatment. CCK-8 assay was used to assess the viability of BC cells. Flow cytometry assays were performed to evaluate the mitochondrial membrane potential (MMP), cell apoptosis and cell-cycle distribution...
May 8, 2018: Oncology Reports
https://www.readbyqxmd.com/read/29740052/viper-regulates-naive-t-cell-activation-and-effector-responses-implication-in-tlr4-associated-acute-stage-t-cell-responses
#9
Subhransu Sekhar Sahoo, Belluru M Pratheek, Vikram S Meena, Tapas Kumar Nayak, P Sanjai Kumar, Saumya Bandyopadhyay, Prasanta Kumar Maiti, Subhasis Chattopadhyay
Naive T cells are known to express the modest level of TLR4 while it is known to go down during TCR activation. However, information towards the requirement of TLR4 signaling during TCR or mitogenic activation of naive wild-type T cells remains scanty. Here we have investigated the endogenous functional expression of TLR4 in naive mice T cells during TCR and mitogenic stimulation in presence of VIPER peptide (VP), an established inhibitor of TLR4 signaling. As expected we found that TLR4 expression goes down during TCR and mitogenic activation...
May 8, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29738767/mir-411-suppresses-acute-spinal-cord-injury-via-downregulation-of-fas-ligand-in-rats
#10
Zong-Ming Gong, Zhen-Yu Tang, Xiao-Liang Sun
OBJECTIVE: To explore the role of miR-411/FasL in acute spinal cord injury (ASCI). METHODS: The ASCI rat model was established, and expression of miR-411 and Fas ligand (FasL) were examined. Basso, Beattie and Bresnahan (BBB) score was used to evaluate the rats' neurological function. PC12 oxygen-glucose deprivation (OGD) model was also established. Gene manipulation (including miR-411 mimic or inhibitor) was used to modulate gene expression. Luciferase reporter assay was conducted to confirm the targeting relationship between miR-411 and FasL...
May 5, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29734947/association-between-fas-fasl-gene-polymorphism-and-musculoskeletal-degenerative-diseases-a-meta-analysis
#11
Donghua Huang, Jinrong Xiao, Xiangyu Deng, Kaige Ma, Hang Liang, Deyao Shi, Fashuai Wu, Zengwu Shao
BACKGROUND: It was reported that Fas (rs1800682, rs2234767) and FasL (rs5030772, rs763110) gene polymorphism might be related to the risk of musculoskeletal degenerative diseases (MSDD), such as osteoarthritis (OA), intervertebral disc degeneration (IVDD) and rheumatoid arthritis (RA). However, data from different studies was inconsistent. Here we aim to elaborately summarize and explore the association between the Fas (rs1800682, rs2234767) and FasL (rs5030772, rs763110) and MSDD. METHODS: Literatures were selected from PubMed, Web of Science, Embase, Scopus and Medline in English and VIP, SinoMed, Wanfang and the China National Knowledge Infrastructure (CNKI) in Chinese up to August 21, 2017...
May 7, 2018: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29725377/the-sirna-silencing-of-dcr3-expression-induces-fas-ligand-mediated-apoptosis-in-hepg2-cells
#12
Tuanjie Zhao, Yingchen Xu, Shulin Ren, Chaojie Liang, Xiaona Zhou, Jixiang Wu
Dysfunctional Fas ligand (FasL) may inhibit the apoptosis of tumor cells. FasL contains two receptors, Fas and Decoy Receptor 3 (DcR3). DcR3 competitively binds to FasL over Fas, resulting in the inhibition of FasL-mediated apoptosis. Therefore, it was suggested that the downregulation of DcR3 expression enhances FasL-mediated apoptosis. In the current study, the expression of DcR3 was silenced in liver cancer HepG2 cells in order to study the effect of FasL on HepG2 cell activity and invasiveness. DcR3 siRNA knockdown HepG2 cells (KD), DcR3 blank plasmid control HepG2 cells and wild-type HepG2 cells (WT) were treated with FasL (10 ng/ml)...
May 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29721376/pd-l1-expression-is-regulated-by-both-dna-methylation-and-nf-kb-during-emt-signaling-in-non-small-cell-lung-carcinoma
#13
A Asgarova, K Asgarov, Y Godet, P Peixoto, A Nadaradjane, M Boyer-Guittaut, J Galaine, D Guenat, V Mougey, J Perrard, J R Pallandre, A Bouard, J Balland, C Tirole, O Adotevi, E Hendrick, M Herfs, P F Cartron, C Borg, E Hervouet
Tumor cells, which undergo Epithelial-mesenchymal transition (EMT) acquire increased capacities of proliferation, invasion and have the ability to generate metastases by escaping the immune system during their systemic migration. To escape the immune system, cancer cells may induce tolerance or resist elimination by immune effectors via multiple mechanisms and we hypothesized that EMT may control the expression of immune checkpoint inhibitors, then promoting immune evasion. PD-L1 (programmed cell death ligand 1) but not PD-L2 nor Galectin 9 or Death receptor (DR4, DR5 and Fas) and ligands (FasL and TRAIL) expression was up-regulated during cytokine-driven EMT in a reversible manner...
2018: Oncoimmunology
https://www.readbyqxmd.com/read/29719304/prognostic-value-of-soluble-death-receptor-ligands-in-patients-with-transitional-cell-carcinoma-of-bladder
#14
Islem Ben Bahria-Sediki, Mohamed Chebil, Carla Sampaio, Véronique Martel-Frachet, Mohamed Cherif, Rachida Zermani, Soumaya Rammeh, Amel Ben Ammar Gaaied, Ali Bettaieb
BACKGROUND: The activation of Fas/Fas ligand (FasL) and DR4-DR5/tumor necrosis factor-related-apoptosis-inducing ligand (TRAIL) pathways in cancer cells triggers apoptosis. The objective of this study was to investigate the prognostic value of soluble FasL (sFasL) and soluble (sTRAIL) in the serum of patients with bladder cancer. METHODS: The sFasL and sTRAIL levels in the sera of patients with bladder cancer or healthy donors were determined using the enzyme-linked immunosorbent assay...
May 2, 2018: Urologia Internationalis
https://www.readbyqxmd.com/read/29718063/the-protective-effects-of-hgf-against-apoptosis-in-vascular-endothelial-cells-caused-by-peripheral-vascular-injury
#15
Wu Zhong, Yu Zhao, Ye Tian, Muhu Chen, Xue Lai
Closed vascular injuries have danger of developing critical tissue ischemia with a high risk of amputation and limb loss. However, limited effective strategies exist at present. In this study, we investigate the role of hepatocyte growth factor (HGF) on apoptosis of vascular endothelial cells (VECs). First, apoptosis of VECs was induced by hypoxia treatment with or without HGF. Annexin V-7AAD apoptosis assay revealed that HGF overexpression significantly reduced VEC apoptosis. Then a closed peripheral vascular injury animal model was created by balloon catheter in female New Zealand rabbit...
April 30, 2018: Acta Biochimica et Biophysica Sinica
https://www.readbyqxmd.com/read/29713367/wentong-decoction-cures-allergic-bronchial-asthma-by-regulating-the-apoptosis-imbalance-of-eos
#16
Yue Yan, Hai-Peng Bao, Chun-Lei Li, Qi Shi, Yan-Hua Kong, Ting Yao, You-Lin Li
Background: Eosinophils (EOS) is one of the most important cells involved in the pathogenesis of chronic airway inflammation in asthma, and its apoptosis is part of the mechanisms of asthma. Therefore, this study aimed to observe the effect of Chinese medicine Wentong decoction (WTD) in EOS apoptosis in asthmatic rats. This work also explored the mechanism of WTD regulation in EOS apoptosis and provided a new target for clinical treatment of asthma. Methods: Asthmatic rats induced by ovalbumin were treated with WTD...
2018: Chinese Medicine
https://www.readbyqxmd.com/read/29710643/pm-2-5-induces-male-reproductive-toxicity-via-mitochondrial-dysfunction-dna-damage-and-ripk1-mediated-apoptotic-signaling-pathway
#17
Jin Zhang, Jianhui Liu, Lihua Ren, Jialiu Wei, Junchao Duan, Lefeng Zhang, Xianqing Zhou, Zhiwei Sun
Recent years, air pollution has been a serious problem, and PM2.5 is the main air particulate pollutant. Studies have investigated that PM2.5 is a risky factor to the deterioration of semen quality in males. But, the related mechanism is still unclear. To explore the effect of PM2.5 , Sprague Dawley (SD) rats were exposed to PM2.5 (0, 1.8, 5.4 and 16.2mg/kg.bw.) through intratracheal instillation. The exposure was performed once every 3days and continued for 30days. In vitro, GC-2spd cells were treated using 0, 50, 100, 200μg/mL PM2...
September 1, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29698635/exosomal-mir-21a-5p-mediates-cardioprotection-by-mesenchymal-stem-cells
#18
Kristin M Luther, Lauren Haar, Myc McGuinness, Yang Wang, Tom Lynch, Anh Phan, Yang Song, Zilong Shen, George Gardner, Gina Kuffel, Xiaoping Ren, Michael J Zilliox, W Keith Jones
Though experimental, stem cell transplantation has the potential to improve the condition of the heart after myocardial infarction. It does so by reducing infarct size and inducing repair of heart muscle and its blood supply. Mesenchymal stem cells (MSC) have been found to be effective in pre-clinical animal models and clinical trials, but the mechanisms by which they induce cardioprotection and repair are still not fully understood. Small extracellular vesicles known as exosomes are now recognized to be key mediators of beneficial MSC paracrine effects, and the concept that they transfer miRNA to change gene expression in recipient cells is of current therapeutic interest...
April 23, 2018: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/29693193/corilagin-induces-the-apoptosis-of-hepatocellular-carcinoma-cells-through-the-mitochondrial-apoptotic-and-death-receptor-pathways
#19
Yuan Deng, Xudan Li, Xuan Li, Zhizhong Zheng, Wen Huang, Lianghua Chen, Qingxuan Tong, Yanlin Ming
Corilagin, a gallotannin, is one of the major active components of many ethnopharmacological plants and exhibits antitumor, anti-inflammatory and antioxidative properties. In recent years, corilagin has provoked much attention due to its antitumor activity, yet the mechanisms attributed to its anticancer actions are largely unknown. In our previous research, our group reported that corilagin could inhibit the proliferation of hepatocellular carcinoma (HCC) cells by inducing G2/M phase arrest. In the present study, observation of the morphological changes showed that corilagin induced the apoptosis of HCC cells as determined by AO/EB and Hoechst 33258 staining assays...
April 23, 2018: Oncology Reports
https://www.readbyqxmd.com/read/29686719/phytoceuticals-in-acute-pancreatitis-targeting-the-balance-between-apoptosis-and-necrosis
#20
REVIEW
Laura Gaman, Dorin Dragos, Adelina Vlad, Georgiana Catalina Robu, Mugurel Petrinel Radoi, Laura Stroica, Mihaela Badea, Marilena Gilca
Despite recent advances in understanding the complex pathogenesis of pancreatitis, the management of the disease remains suboptimal. The use of phytoceuticals (plant-derived pleiotropic multitarget molecules) represents a new research trend in pancreatology. The purpose of this review is to discuss the phytoceuticals with pancreatoprotective potential in acute pancreatitis and whose efficacy is based, at least in part, on their capacity to modulate the acinar cell death. The phytochemicals selected, belonging to such diverse classes as polyphenols, flavonoids, lignans, anthraquinones, sesquiterpene lactones, nitriles, and alkaloids, target the balance between apoptosis and necrosis...
2018: Evidence-based Complementary and Alternative Medicine: ECAM
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