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MiRNA ezh2

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https://www.readbyqxmd.com/read/28322158/effect-and-mechanism-of-curcumin-on-ezh2-mir-101-regulatory-feedback-loop-in-multiple-myeloma
#1
Chuanqing Wu, Tuo Ruan, Weizhen Liu, Xiaojie Zhu, Juan Pan, Wen Lu, Chen Yan, Kaixiong Tao, Weikang Zhang, Chun Zhang
BACKGROUND: Multiple myeloma is the second most prevalent hematologic malignancy and thought to be incurable. Therefore, it's urgent to find new drugs for treatment. Some experiments have shown that curcumin might have great potential in treating multiple myeloma, while the mechanism is still unknown. EZH2 and SUZ12 are the core proteins in PRC2 and their expression are increased in various human cancers, including the poor prognostic multiple myeloma. Meanwhile, the regulation of miRNAs and EZH2 has been demonstrated in other cancer researches, like lung cancer, pancreatic cancer, leukemia and so on...
March 17, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28236692/synthesis-and-characterization-of-folate-decorated-albumin-bio-conjugate-nanoparticles-loaded-with-a-synthetic-curcumin-difluorinated-analogue
#2
Kaustubh A Gawde, Prashant Kesharwani, Samaresh Sau, Fazlul H Sarkar, Subhash Padhye, Sushil K Kashaw, Arun K Iyer
Albumin-bound paclitaxel colloidal nanoparticle (Abraxane®) is an FDA approved anticancer formulation available in the market. It is a suspension which is currently used therapeutically for treating cancers of the breast, lung, and pancreas among others. CDF is a novel new and potent synthetic curcumin analogue that is widely used for breast and ovarian cancer. The aim of this study was to use biocompatible albumin as well as folate decorated albumin to formulate colloidal nanoparticles encapsulating curcumin difluorinated (CDF)...
February 14, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28214878/mirna-26a-contributes-to-the-acquisition-of-malignant-behaviors-of-doctaxel-resistant-lung-adenocarcinoma-cells-through-targeting-ezh2
#3
Jing Chen, Yuejuan Xu, Leilei Tao, Yan Pan, Kai Zhang, Rui Wang, Long-Bang Chen, Xiaoyuan Chu
BACKGROUND/AIMS: Accumulating evidence revealed that microRNAs (miRNAs) have been demonstrated as critical molecules in tumor development and progression. MiR-26a, located in a fragile chromosomal region associated with various human cancer, has been reported to be involved in regulating various cellular process, such as proliferation, apoptosis and invasion through targeting multiple oncogene. Docetaxel-mediated chemotherapy has been applied in improving the survival and prognosis of patients with advanced lung adenocarcinoma (LAD)...
February 3, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28184915/microrna-30d-inhibits-the-migration-and-invasion-of-human-esophageal-squamous-cell-carcinoma-cells-via-the-post%C3%A2-transcriptional-regulation-of-enhancer-of-zeste-homolog%C3%A2-2
#4
Rui Xie, Shang-Nong Wu, Cheng-Cheng Gao, Xiao-Zhong Yang, Hong-Gang Wang, Jia-Ling Zhang, Wei Yan, Tian-Heng Ma
The present study was carried out to investigate the expression pattern, clinical significance and biological functions of microRNA-30d (miR-30d) in esophageal carcinogenesis. Quantitative real-time PCR was performed to detect the expression levels of miR-30d in esophageal squamous cell carcinoma (ESCC) tissues and cell lines. Then, associations between miR-30d expression and various clinicopathological features of patients with ESCC were statistically evaluated. In addition, the effects of miR-30d on the migration and invasion of two human ESCC cell lines transfected with miRNA or co-transfected with miRNA mimics and the expression vector of its target gene were determined...
March 2017: Oncology Reports
https://www.readbyqxmd.com/read/28088786/ezh2-inhibition-suppresses-endometrial-cancer-progression-via-mir-361-twist-axis
#5
Kei Ihira, Peixin Dong, Ying Xiong, Hidemichi Watari, Yosuke Konno, Sharon Jb Hanley, Masayuki Noguchi, Noriyuki Hirata, Futoshi Suizu, Takahiro Yamada, Masataka Kudo, Noriaki Sakuragi
EZH2 inhibition and reactivation of tumor suppressor microRNAs (miRNAs) represent attractive anti-cancer therapeutic strategies. We found that EZH2-suppressed let 7b and miR-361, two likely tumor suppressors, inhibited endometrial cancer (EC) cell proliferation and invasion, and abrogated cancer stem cell-like properties. In EC cells, EZH2 induced and functioned together with YY1 to epigenetically suppress miR-361, which upregulated Twist, a direct target of miR-361. Treating EC cells with GSK343, a specific EZH2 inhibitor, mimicked the effects of siRNA-mediated EZH2 knockdown, upregulating miR-361 and downregulating Twist expression...
January 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/28060766/opposing-roles-of-pik3ca-gene-alterations-to-ezh2-signaling-in-non-muscle-invasive-bladder-cancer
#6
Cristina Segovia, Mónica Martínez-Fernández, Marta Dueñas, Carolina Rubio, Fernando F López-Calderón, Clotilde Costa, Cristina Saiz-Ladera, María Fernández-Grajera, José Duarte, Huberto García Muñoz, Federico de la Rosa, Felipe Villacampa, Daniel Castellano, Jesús M Paramio
The high rates of tumor recurrence and progression represent a major clinical problem in non-muscle invasive bladder cancer. Previous data showed that EZH2-dependent signaling mediates these processes, whereas the frequent alterations of PIK3CA gene (copy gains and mutations) are predictive of reduced recurrence. Here we show, using clinical samples and bladder cancer cell lines, a functional interaction between EZH2- and PIK3CA-dependent signaling pathways. PIK3CA alterations mediated, on the one hand, the increased expression of two miRNAs, miR-101 and miR-138, which posttranscriptionally downregulate EZH2 expression...
February 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/27998761/lncrna-spry4-it1-sponges-mir-101-3p-to-promote-proliferation-and-metastasis-of-bladder-cancer-cells-through-up-regulating-ezh2
#7
Dong Liu, Yawei Li, Gang Luo, Xingyuan Xiao, Dan Tao, Xinchao Wu, Miao Wang, Chao Huang, Liang Wang, Fuqing Zeng, Guosong Jiang
Emerging evidences have indicated that long non-coding RNAs (LncRNAs) play vital roles in cancer development and progression. Previous studies have suggested that overexpression of SPRY4-IT1 predicates poor prognosis and promotes tumor progress in several cancers. However, the underlying mechanism of SPRY4-IT1 in bladder cancer remains unknown. In this study, we found that SPRY4-IT1 knockdown induced inhibition of cell proliferation, cell migration and invasion ability, and caused promotion of apoptosis in bladder cancer both in vitro and in vivo...
March 1, 2017: Cancer Letters
https://www.readbyqxmd.com/read/27936205/hyperhomocysteinemia-in-apoe-mice-leads-to-overexpression-of-enhancer-of-zeste-homolog-2-via-mir-92a-regulation
#8
Yang Xiaoling, Zhao Li, Li ShuQiang, Ma Shengchao, Yang Anning, Ding Ning, Li Nan, Jia Yuexia, Yang Xiaoming, Li Guizhong, Jiang Yideng
Hyperhomocysteinemia (HHcy) is an independent risk factor for cardiovascular diseases, such as atherosclerosis. HHcy promotes atherogenesis by modifying the histone methylation patterns and miRNA regulation. In this study, we investigated the effects of homocysteine (Hcy) on the expression of enhancer of zeste homolog 2 (EZH2), and tested our hypothesis that Hcy-induced atherosclerosis is mediated by increased EZH2 expression, which is regulated by miR-92a. The levels of EZH2 and H3K27me3 were increased in the aorta of ApoE-/- mice fed a high-methionine diet for 16 weeks, whereas miR-92a expression was decreased...
2016: PloS One
https://www.readbyqxmd.com/read/27895750/microrna-298-inhibits-malignant-phenotypes-of-epithelial-ovarian-cancer-by-regulating-the-expression-of-ezh2
#9
Fenmei Zhou, Juan Chen, Hairong Wang
MicroRNA (miRNA or miR)-298 has been reported to be downregulated and to modify the expression of the polycomb protein enhancer of zeste 2 (EZH2) in recurrent epithelial ovarian cancer (EOC). To date, no functional evidence of a miR-298-EZH2 axis in EOC has been documented. The present study aimed to investigate the associations of miR-298 and/or EZH2 expression with clinicopathological features of EOC patients, and revealed their roles in cell motility based on EOC cell lines. Reverse transcription-quantitative polymerase chain reaction was performed to detect the expression levels of miR-298 and EZH2 messenger RNA in human EOC tissues and cell lines...
November 2016: Oncology Letters
https://www.readbyqxmd.com/read/27890434/mir-98-inhibits-hepatocellular-carcinoma-cell-proliferation-via-targeting-ezh2-and-suppressing-wnt-%C3%AE-catenin-signaling-pathway
#10
Jun-Jie Zhang, Jiang-Tao Chen, Long Hua, Kun-Hou Yao, Chen-Yu Wang
Hepatocellular carcinoma (HCC) is a highly aggressive solid malignancy in the word. Aberrant microRNA (miRNA) expression is involved in human diseases including cancer. In the current study, we explore the function of miR-98 in HCC cell proliferation. We found that expression level of miR-98 was significantly decreased in HCC tissues and cells lines compared with adjacent non-tumor issues and human hepatic cell line LO2. Increased expression of miR-98 suppressed HCC cell proliferation and arrested HCC cell cycle in G0/G1 phase...
January 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27845386/mir-101-targets-the-ezh2-wnt-%C3%AE-catenin-the-pathway-to-promote-the-osteogenic-differentiation-of-human-bone-marrow-derived-mesenchymal-stem-cells
#11
Hongrui Wang, Yake Meng, Quanjun Cui, Fujun Qin, Haisong Yang, Yu Chen, Yajun Cheng, Jiangang Shi, Yongfei Guo
Mounting evidence indicates that microRNAs (miRNAs) are involved in multiple processes of osteogenic differentiation. MicroRNA-101 (miR-101), identified as a tumor suppressor, has been implicated in the pathogenesis of several types of cancer. However, the expression of miR-101 and its roles in the osteogenic differentiation of human bone marrow-derived mesenchymal stem cells (hBMSCs) remain unclear. We found that the miR-101 expression level was significantly increased during the osteogenic differentiation of hBMSCs...
November 15, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27831649/mir-129-5p-is-downregulated-in-breast-cancer-cells-partly-due-to-promoter-h3k27m3-modification-and-regulates-epithelial-mesenchymal-transition-and-multi-drug-resistance
#12
Q-X Luan, B-G Zhang, X-J Li, M-Y Guo
OBJECTIVE: In this study, we firstly studied whether H3K27me3 modification is a mechanism of miR-129-5p downregulation in breast cancer and further investigated the functional role of miR-129-5p in epithelial-to-mesenchymal transition (EMT) and in multi-drug resistance (MDR) of the cancer cells. MATERIALS AND METHODS: Immunoprecipitation (IP) and Chromatin Immunoprecipitation (ChIP) assay were performed to detect the association among SOX4, EZH2 and H3K27me3 and their enrichment in the promoter region of miR-129-2...
October 2016: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/27823969/targeting-ezh1-and-ezh2-contributes-to-the-suppression-of-fibrosis-associated-genes-by-mir-214-3p-in-cardiac-myofibroblasts
#13
Wen-Si Zhu, Chun-Mei Tang, Zhen Xiao, Jie-Ning Zhu, Qiu-Xiong Lin, Yong-Heng Fu, Zhi-Qin Hu, Zhuo Zhang, Min Yang, Xi-Long Zheng, Shu-Lin Wu, Zhi-Xin Shan
The role of microRNA-214-3p (miR-214-3p) in cardiac fibrosis was not well illustrated. The present study aimed to investigate the expression and potential target of miR-214-3p in angiotensin II (Ang-II)-induced cardiac fibrosis. MiR-214-3p was markedly decreased in the fibrotic myocardium of a mouse Ang-II infusion model, but was upregulated in Ang-II-treated mouse myofibroblasts. Cardiac fibrosis was shown attenuated in Ang-II-infused mice received tail vein injection of miR-214-3p agomir. Consistently, miR-214-3p inhibited the expression of Col1a1 and Col3a1 in mouse myofibroblasts in vitro...
November 3, 2016: Oncotarget
https://www.readbyqxmd.com/read/27705913/epithelioid-peritoneal-mesothelioma-a-hybrid-phenotype-within-a-mesenchymal-epithelial-epithelial-mesenchymal-transition-framework
#14
Fabio Bozzi, Silvia Brich, Gian Paolo Dagrada, Tiziana Negri, Elena Conca, Barbara Cortelazzi, Antonino Belfiore, Federica Perrone, Ambra Vittoria Gualeni, Annunziata Gloghini, Antonello Cabras, Monica Brenca, Roberta Maestro, Nadia Zaffaroni, Paolo Casali, Rossella Bertulli, Marcello Deraco, Silvana Pilotti
The aim of this study was to reconsider the biological characteristics of epithelioid malignant peritoneal mesothelioma (E-MpM) in the light of new concepts about epithelial mesenchymal transition and mesenchymal epithelial reverse transition (EMT/MErT) and the role of epigenetic reprogramming in this context. To this end we profiled surgical specimens and derived cells cultures by a number of complementary approaches i.e. immunohistochemistry, immunofluorescence, in situ hybridization, biochemistry, pluripotent stem cell arrays, treatments with cytokines, growth factors and specific inhibitors...
November 15, 2016: Oncotarget
https://www.readbyqxmd.com/read/27624777/inhibition-of-s-adenosylmethionine-dependent-methyltransferase-attenuates-tgf%C3%AE-1-induced-emt-and-metastasis-in-pancreatic-cancer-putative-roles-of-mir-663a-and-mir-4787-5p
#15
Hardik R Mody, Sau Wai Hung, Mohammad AlSaggar, Jazmine Griffin, Rajgopal Govindarajan
The identification of epigenetic reversal agents for use in combination chemotherapies to treat human pancreatic ductal adenocarcinomas (PDAC) remains an unmet clinical need. Pharmacologic inhibitors of Enhancer of Zeste Homolog 2 (EZH2) are emerging as potential histone methylation reversal agents for the treatment of various solid tumors and leukemia; however, the surprisingly small set of mRNA targets identified with EZH2 knockdown suggests novel mechanisms contribute to their antitumorigenic effects. Here, 3-deazaneplanocin-A (DZNep), an inhibitor of S-adenosyl-L-homocysteine hydrolase and EZH2 histone lysine-N-methyltransferase, significantly reprograms noncoding microRNA (miRNA) expression and dampens TGFβ1-induced epithelial-to-mesenchymal (EMT) signals in pancreatic cancer...
November 2016: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/27622325/microrna-126-increases-chemosensitivity-in-drug-resistant-gastric-cancer-cells-by-targeting-ezh2
#16
Ping Wang, Ziqiu Li, Haide Liu, Dongmei Zhou, Aiqin Fu, Enning Zhang
Chemotherapeutic insensitivity is a significant barrier for effective treatment of gastric cancer (GC). Recently, emerging evidence has demonstrated that microRNAs (miRNAs) are critically involved in drug resistance. Here, by a large-scale screen, we noticed low expression of miR-126 in the drug-resistant GC cell lines SGC7901/VCR and SGC7901/ADR compared with their parental cell line SGC7901. Ectopic expression of miR-126 increased sensitivity of SGC7901/VCR and SGC7901/ADR cells to vincristine (VCR) and adriamycin (ADR)...
October 7, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/27602159/epigenetic-regulation-of-mirna-124-and-multiple-downstream-targets-is-associated-with-treatment-response-in-myeloid-malignancies
#17
Hongbin Liu, Phillip Pattie, Sahan Chandrasekara, Andrew Spencer, Anthony E Dear
Epigenetic regulation of microRNA (miRNA) expression has recently been implicated in the pathogenesis of myelodysplastic syndrome (MDS). Particular interest has focused on miRNA-124 expression, which is inhibited in MDS and has recently been demonstrated to be upregulated in response to epigenetic treatment (EGT). Previous studies have determined the in vitro and in vivo expression of miRNA-124 and several molecular targets, including cyclin-dependent kinase (CDK) 4, CDK6 and enhancer of zeste homolog 2 (EZH2), in order to elucidate the molecular mechanisms associated with the miRNA-124-mediated therapeutic response to EGT in MDS and identify additional potential biomarkers of early EGT treatment response in myeloid malignancies...
September 2016: Oncology Letters
https://www.readbyqxmd.com/read/27594424/ezh2-coupled-with-hotair-to-silence-microrna-34a-by-the-induction-of-heterochromatin-formation-in-human-pancreatic-ductal-adenocarcinoma
#18
Chi-Han Li, Zhangang Xiao, Joanna Hung-Man Tong, Ka-Fai To, Xiangdong Fang, Alfred Sl Cheng, Yangchao Chen
MicroRNA-34a (miR-34a) is frequently downregulated in pancreatic ductal adenocarcinoma (PDAC) cells, however, the silencing mechanism remains unclear. Enhancer of zeste homolog 2 (EZH2) is overexpressed in PDAC, and our previous miRNA profiling showed that inhibition of EZH2 in PDAC cells led to the re-expression of a group of tumor suppressor miRNAs including miR-34a. Here, we studied the effect of ectopic EZH2 expression to the silencing of miR-34a, and identified HOTAIR as an interacting partner to induce heterochromatin formation during miR-34a repression...
January 1, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/27562865/mir-26a-and-mir-138-block-the-g1-s-transition-by-targeting-the-cell-cycle-regulating-network-in-prostate-cancer-cells
#19
Kati Erdmann, Knut Kaulke, Christiane Rieger, Karsten Salomo, Manfred P Wirth, Susanne Fuessel
PURPOSE: The tumor-suppressive microRNAs miR-26a and miR-138 are significantly down-regulated in prostate cancer (PCa) and have been identified as direct regulators of enhancer of zeste homolog 2 (EZH2), which is a known oncogene in PCa. In the present study, the influence of miR-26a and miR-138 on EZH2 and cellular function including the impact on the cell cycle regulating network was evaluated in PCa cells. METHODS: PC-3 and DU-145 PCa cells were transfected with 100 nM of miRNA mimics, siRNA against EZH2 (siR-EZH2) or control constructs for 4 h...
November 2016: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/27517917/the-antitumor-effect-of-metformin-is-mediated-by-mir-26a-in-breast-cancer
#20
Paula Cabello, Begoña Pineda, Eduardo Tormo, Ana Lluch, Pilar Eroles
Metformin, a drug approved for diabetes type II treatment, has been associated with a reduction in the incidence of breast cancer and metastasis and increased survival in diabetic breast cancer patients. High levels of miR-26a expression have been proposed as one of the possible mechanisms for this effect; likewise, this miRNA has also been associated with survival/apoptosis processes in breast cancer. Our aim was to evaluate if miR-26a and some of its targets could mediate the effect of metformin in breast cancer...
August 10, 2016: International Journal of Molecular Sciences
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