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https://www.readbyqxmd.com/read/29036495/the-p16-mir-217-egr1-pathway-modulates-age-related-tenogenic-differentiation-in-tendon-stem-progenitor-cells
#1
Weifeng Han, Bing Wang, Junpeng Liu, Lei Chen
Previous studies have shown that the differentiation potential declines with the age of progenitor cells and is linked to altered levels of senescence markers. The purpose of this study was to test whether senescence marker p16 affects age-related tenogenic differentiation in tendon stem/progenitor cells (TSPCs). Young and aged TSPCs were isolated from young/healthy and aged/degenerated human Achilles tendons, respectively. Cellular aging and capacity for tenogenic differentiation were examined. The results showed that the tenogenic differentiation capacity of TSPCs significantly decreases with advancing age...
September 27, 2017: Acta Biochimica et Biophysica Sinica
https://www.readbyqxmd.com/read/29028097/microrna-217-functions-as-a-prognosis-predictor-and-inhibits-pancreatic-cancer-cell-proliferation-and-invasion-via-targeting-e2f3
#2
J Yang, H-F Zhang, C-F Qin
OBJECTIVE: Pancreatic cancer (PC) is the most malignant tumor among all the tumors in the digestive system. MiR-217 has been reported to take a critical part in various malignant tumors. The aim of this study was to explore the function of MiR-217 in pancreatic cancer and its target genes. PATIENTS AND METHODS: Twenty pairs of PC tissues and matched normal adjacent pancreatic tissues were collected. The expression of miR-217 in PC tissues and normal pancreatic tissues was detected by Real-time polymerase chain reaction (PCR)...
September 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28977933/mir-217-inhibits-laryngeal-cancer-metastasis-by-repressing-aeg-1-and-pd-l1-expression
#3
Susheng Miao, Xionghui Mao, Shu Zhao, Kaibin Song, Cheng Xiang, Yuanjing Lv, Huanyv Jiang, Lei Wang, Baojun Li, Xianguang Yang, Zhennan Yuan, Cheng Xiu, Hongxue Meng, Ji Sun
High incidences of laryngeal cancer have been reported recently. Increasing our understanding of the molecular mechanisms underlying this malignancy could reveal more effective approaches to treating laryngeal cancer patients and so improve their prognoses. In this study, we explored the biological effects of miR-217 on laryngeal cancer. miR-217 potently inhibited multiple metastatic traits, including cell migration, invasion, proliferation, apoptosis, and EMT, as well as angiogensis. These effects were achieved through downregulation of the miR-217 target gene, AEG-1 and PD-L1...
September 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28962076/mir-217-inhibits-proliferation-migration-and-invasion-via-targeting-akt3-in-thyroid-cancer
#4
Yuanqiang Lin, Kailiang Cheng, Tongtong Wang, Qian Xie, Minglong Chen, Qianqian Chen, Qiang Wen
PURPOSE: The aims of this study were to test the influence of miR-217 on the proliferation, invasion, migration of thyroid cancer and the relevant mechanism. METHOD: miR-217 expression levels in thyroid cancer tissues and cell lines were detected by quantitative real-time PCR (qRT-PCR).Cell Counting Kit-8, flow cytometer, wound healing, transwell invasion assays were applied to evaluate the effect of miR-217 on proliferation, apoptosis, migration and invasion of thyroid cells...
September 25, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28905214/mir-217-5p-induces-apoptosis-by-directly-targeting-prkci-bag3-itgav-and-mapk1-in-colorectal-cancer-cells
#5
Marion Flum, Michael Kleemann, Helga Schneider, Benjamin Weis, Simon Fischer, René Handrick, Kerstin Otte
Apoptosis is a genetically directed process of programmed cell death. A variety of microRNAs (miRNAs), endogenous single-stranded non-coding RNAs of about 22 nucleotides in length have been shown to be involved in the regulation of the intrinsic or extrinsic apoptotic pathways. There is increasing evidence that the aberrant expression of miRNAs plays a causal role in the development of diseases such as cancer. This makes miRNAs promising candidate molecules as therapeutic targets or agents. MicroRNA (miR)-217-5p has been implicated in carcinogenesis of various cancer entities, including colorectal cancer...
September 14, 2017: Journal of Cell Communication and Signaling
https://www.readbyqxmd.com/read/28881803/regulation-of-actin-binding-protein-anln-by-antitumor-mir-217-inhibits-cancer-cell-aggressiveness-in-pancreatic-ductal-adenocarcinoma
#6
Tetsuya Idichi, Naohiko Seki, Hiroshi Kurahara, Keiichi Yonemori, Yusaku Osako, Takayuki Arai, Atsushi Okato, Yoshiaki Kita, Takaaki Arigami, Yuko Mataki, Yuko Kijima, Kosei Maemura, Shoji Natsugoe
Analysis of our microRNA (miRNA) expression signature of pancreatic ductal adenocarcinoma (PDAC) revealed that microRNA-217 (miR-217) was significantly reduced in cancer tissues. The aim of this study was to investigate the antitumor roles of miR-217 in PDAC cells and to identify miR-217-mediated molecular pathways involved in PDAC aggressiveness. The expression levels of miR-217 were significantly reduced in PDAC clinical specimens. Ectopic expression of miR-217 significantly suppressed cancer cell migration and invasion...
August 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28840260/mir-217-casein-kinase-2-cross-talk-regulates-erk-activation-in-ganglioglioma
#7
Atreye Majumdar, Fahim Ahmad, Touseef Sheikh, Reshma Bhagat, Pankaj Pathak, Shanker Datt Joshi, Pankaj Seth, Vivek Tandon, Manjari Tripathi, P Saratchandra, Chitra Sarkar, Ellora Sen
Gangliogliomas (GGs) are the most commonly diagnosed long-term epilepsy-associated tumors (LEATs). Although molecular characterizations of brain tumors have identified few novel biomarkers among the LEATs, mechanisms of pathogenesis remain poorly understood. In this study, global microarray-based microRNA (miRNA) expression profile on a set of 9 GGs indicated 66 miRNAs to be differentially expressed in GG as compared to normal brain. The differences validated by qRT-PCR indicated microRNA-217 to be the most downregulated...
August 25, 2017: Journal of Molecular Medicine: Official Organ of the "Gesellschaft Deutscher Naturforscher und Ärzte"
https://www.readbyqxmd.com/read/28815002/a-comprehensive-method-for-identification-of-suitable-reference-genes-in-extracellular-vesicles
#8
Kenneth Gouin, Kiel Peck, Travis Antes, Jennifer Leigh Johnson, Chang Li, Sharon Denise Vaturi, Ryan Middleton, Geoff de Couto, Ann-Sophie Walravens, Luis Rodriguez-Borlado, Rachel Ruckdeschel Smith, Linda Marbán, Eduardo Marbán, Ahmed Gamal-Eldin Ibrahim
Reverse transcription-quantitative polymerase chain reaction (RT-qPCR) is one of the most sensitive, economical and widely used methods for evaluating gene expression. However, the utility of this method continues to be undermined by a number of challenges including normalization using appropriate reference genes. The need to develop tailored and effective strategies is further underscored by the burgeoning field of extracellular vesicle (EV) biology. EVs contain unique signatures of small RNAs including microRNAs (miRs)...
2017: Journal of Extracellular Vesicles
https://www.readbyqxmd.com/read/28790336/identifying-the-mirna-signature-associated-with-survival-time-in-patients-with-lung-adenocarcinoma-using-mirna-expression-profiles
#9
Srinivasulu Yerukala Sathipati, Shinn-Ying Ho
Lung adenocarcinoma is a multifactorial disease. MicroRNA (miRNA) expression profiles are extensively used for discovering potential theranostic biomarkers of lung cancer. This work proposes an optimized support vector regression (SVR) method called SVR-LUAD to simultaneously identify a set of miRNAs referred to the miRNA signature for estimating the survival time of lung adenocarcinoma patients using their miRNA expression profiles. SVR-LUAD uses an inheritable bi-objective combinatorial genetic algorithm to identify a small set of informative miRNAs cooperating with SVR by maximizing estimation accuracy...
August 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28753577/diagnostic-potential-of-serum-exosomal-colorectal-neoplasia-differentially-expressed-long-non-coding-rna-crnde-p-and-microrna-217-expression-in-colorectal-carcinoma
#10
Bo Yu, Qiong Du, Huan Li, Hong-Yue Liu, Xuan Ye, Bin Zhu, Qing Zhai, Xin-Xiang Li
In this study, we investigated the diagnostic potential of serum exosomal colorectal neoplasia differentially expressed (CRNDE-p) long coding RNA and microRNA-217 in colorectal carcinoma (CRC). We detected high CRNDE-p and low miR-217 levels in exosomes released by multiple CRC cell lines into culture media as well as in sera from CRC xenograft mice and CRC patients. Conversely, we observed lower CRNDE-p and higher miR-217 levels in serum exosomes from post-chemotherapy than from pre-chemotherapy patient samples...
July 20, 2017: Oncotarget
https://www.readbyqxmd.com/read/28747214/culturing-and-transcriptome-profiling-of-progenitor-like-colonies-derived-from-adult-mouse-pancreas
#11
Dongshen Ma, Shanshan Tang, Jing Song, Qiong Wu, Fangfang Zhang, Yun Xing, Yi Pan, Yanfeng Zhang, Jingwei Jiang, Yubin Zhang, Liang Jin
BACKGROUND: Transplantation of insulin-producing cells is considered an important diabetes therapy. Many research studies have shown that insulin-producing cells can be derived from the in-vitro cultured pancreatic colonies with self-renewal ability and multilineage potential. Even though these progenitor-like colonies have been prepared from adult pancreas cells, the efficient culture method is hardly established and regulation of the colonies is rarely known. We confirmed previously that single cells acquired from adult mouse pancreas could form cyst-like colonies in a 3D semi-solid system containing Matrigel and methylcellulose...
July 26, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28733554/mir-217-inhibits-laryngeal-cancer-metastasis-by-repressing-aeg-1-and-pd-l1-expression
#12
Susheng Miao, Xionghui Mao, Shu Zhao, Kaibin Song, Cheng Xiang, Yuanjing Lv, Huanyv Jiang, Lei Wang, Baojun Li, Xianguang Yang, Zhennan Yuan, Cheng Xiu, Hongxue Meng, Ji Sun
High incidences of laryngeal cancer have been reported recently. Increasing our understanding of the molecular mechanisms underlying this malignancy could reveal more effective approaches to treating laryngeal cancer patients and so improve their prognoses. In this study, we explored the biological effects of miR-217 on laryngeal cancer. miR-217 potently inhibited multiple metastatic traits, including cell migration, invasion, proliferation, apoptosis, and EMT, as well as angiogensis. These effects were achieved through downregulation of the miR-217 target gene, AEG-1 and PD-L1...
July 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/28701723/the-lncrna-malat1-acts-as-a-competing-endogenous-rna-to-regulate-kras-expression-by-sponging-mir-217-in-pancreatic-ductal-adenocarcinoma
#13
Pingping Liu, Haiyan Yang, Jing Zhang, Xiaozhong Peng, Zhaohui Lu, Weimin Tong, Jie Chen
The long noncoding RNA (lncRNA) metastasis-associated lung adenocarcinoma transcript-1 (MALAT1) has been shown to play an important role in tumourigenesis. The aim of this study was to investigate the role of MALAT1 in pancreatic ductal adenocarcinoma. MALAT1 is expressed at higher levels in pancreatic ductal adenocarcinoma (PDAC) tissues than in nontumour tissues and in metastatic PDAC than in localized tumours. Patients with PDAC and high MALAT1 expression levels have shorter overall survival than patients with PDAC and low MALAT1 expression levels...
July 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28642131/mir-217-suppresses-proliferation-and-promotes-apoptosis-in-cardiac-myxoma-by-targeting-interleukin-6
#14
Jing Zhang, Cui Wang, Huimin Xu
Cardiac myxoma (CM) is a prevalent primary cardiac tumor. miR-217 plays a vital role in tumorigenesis of various cancers, however, its role and underlying molecular mechanism in human CM remain poorly understood. Here, we reported that the expression of miR-217 was downregulated in CM tissues and inversely correlated with the expression of Interleukin-6 (IL-6) mRNA. Gain-of-function analysis indicated that overexpression of miR-217 inhibited the proliferation and promoted the apoptosis of the primary CM cells...
August 26, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28624807/regulation-of-actin-binding-protein-anln-by-antitumor-mir-217-inhibits-cancer-cell-aggressiveness-in-pancreatic-ductal-adenocarcinoma
#15
Tetsuya Idichi, Naohiko Seki, Hiroshi Kurahara, Keiichi Yonemori, Yusaku Osako, Takayuki Arai, Atsushi Okato, Yoshiaki Kita, Takaaki Arigami, Yuko Mataki, Yuko Kijima, Kosei Maemura, Shoji Natsugoe
Analysis of our microRNA (miRNA) expression signature of pancreatic ductal adenocarcinoma (PDAC) revealed that microRNA-217 (miR-217) was significantly reduced in cancer tissues. The aim of this study was to investigate the antitumor roles of miR-217 in PDAC cells and to identify miR-217-mediated molecular pathways involved in PDAC aggressiveness. The expression levels of miR-217 were significantly reduced in PDAC clinical specimens. Ectopic expression of miR-217 significantly suppressed cancer cell migration and invasion...
May 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28602161/cytoprotective-effect-exerted-by-geraniin-in-hepg2-cells-is-through-microrna-mediated-regulation-of-bach-1-and-ho-1
#16
Hoda Aayadi, Smriti P K Mittal, Anjali Deshpande, Makarand Gore, Saroj S Ghaskadbi
Geraniin, a hydrolysable tannin, used in traditional medicine in Southeast Asia, is known to exhibit various biological activities. As an antioxidant it is known to up-regulate phase II enzyme Heme oxygenase-1 (HO-1). However its mechanism is not clearly understood. Nuclear factor erythroid-derived 2 related factor 2 (Nrf-2) is transcriptionally up-regulated by Extracellular signal-regulated kinase (ERK) 1/2 and retained in nucleus due to inactivated Glycogen synthase kinase 3 beta (GSK-3β). Geraniin additionally down-regulates expression of microRNA 217 and 377 (miR-217 and miR-377) which target HO-1 mRNA...
June 12, 2017: BMB Reports
https://www.readbyqxmd.com/read/28599501/microrna-217-inhibits-cell-proliferation-and-enhances-chemosensitivity-to-doxorubicin-in-acute-myeloid-leukemia-by-targeting-kras
#17
Yi Xiao, Taoran Deng, Changliang Su, Zhen Shang
Acute myeloid leukemia (AML) is a heterogeneous malignant disorder derived from the myeloid hematopoietic cells that accounts for ~80% of all adult acute leukemia. Numerous studies have shown that drug resistance not only exists against conventional chemotherapeutic drugs, but also limits the efficacy of new biological agents. Therefore, it is important to identify the mechanisms behind chemoresistance and seek therapeutic strategies to enhance efficacy in AML chemotherapy. MicroRNA (miR)-217 has been recognized as a tumor suppressor that is downregulated in various types of cancer, however the mechanisms behind the expression and function of miR-217 in AML have not yet been recognized...
June 2017: Oncology Letters
https://www.readbyqxmd.com/read/28578521/mir-138-promotes-migration-and-tube-formation-of-human-cytomegalovirus-infected-endothelial-cells-through-the-sirt1-p-stat3-pathway
#18
Shanchao Zhang, Lei Liu, Ruijin Wang, Houzhen Tuo, Yanjun Guo, Li Yi, Dexin Wang, Jiawei Wang
Human cytomegalovirus (HCMV) has been reported to be linked to vascular disease through the induction of neovessel formation. We have previously reported that microRNA (miR)-217 and miR-199a-5p enhance endothelial angiogenesis via inhibition of sirtuin 1 (SIRT1) in HCMV-infected human umbilical vein endothelial cells (HUVECs). Here, we found that miR-138 also suppressed the expression of the SIRT1 protein and stimulated phosphorylation of signal transducer and activator of transcription 3 (p-STAT3). Moreover, the regulation of p-STAT3 expression mediated by SIRT1 was found to promote HCMV-induced angiogenesis...
June 3, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28548126/microrna-dysregulation-in-the-tumor-microenvironment-influences-the-phenotype-of-pancreatic-cancer
#19
Eva Karamitopoulou, Stefan Haemmig, Ulrich Baumgartner, Cornelia Schlup, Martin Wartenberg, Erik Vassella
Cellular interactions in the tumor microenvironment influence neoplastic progression in pancreatic ductal adenocarcinoma. One underlying mechanism is the induction of the prognostically unfavorable epithelial-mesenchymal-transition-like tumor budding. Our aim is to explore the expression of microRNAs implicated in the regulation of tumor budding focusing on the microenvironment of the invasive front. To this end, RNA from laser-capture-microdissected material of the main tumor, tumor buds, juxta-tumoral stroma, tumor-remote stroma, and non-neoplastic pancreatic parenchyma from pancreatic cancer cases with (n=7) and without (n=6) tumor budding was analyzed by qRT-PCR for the expression of a panel of miRNAs that are known to be implicated in the regulation of epithelial-mesenchymal transition, including miR-21, miR-183, miR-200b, miR-200c, miR-203, miR-205, miR-210, and miR-217...
August 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/28539816/hsa-mir-96-and-hsa-mir-217-expression-down-regulates-with-increasing-dysplasia-in-pancreatic-intraepithelial-neoplasias-and-intraductal-papillary-mucinous-neoplasms
#20
XiaoYan Chang, ChunKai Yu, Ji Li, Shuangni Yu, Jie Chen
AIM: To compare the clinicopathological features of pancreatic intraepithelial neoplasias (PanINs) and intraductal papillary mucinous neoplasms (IPMNs), and to investigate the role of hsa-miR-96 and hsa-miR-217 in these two lesions. Methods: Formalin-fixed paraffin-embedded pancreatic specimens were selected in this study, including 58 cases of pancreatic intraepithelial neoplasias (PanINs), 45 cases of pancreatic ductal adenocarcinomas (PDAs), and 57 cases of intraductal papillary mucinous neoplasms (IPMNs)...
2017: International Journal of Medical Sciences
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