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https://www.readbyqxmd.com/read/29332345/correlation-between-mir-19a-inhibition-and-radiosensitivity-in-siha-cervical-cancer-cells
#1
Yina Wang, Yang Wang, Wei Zhong, Kuerban Gulina
PURPOSE: MicroRNAs (miRs) have been implicated in many aspects of tumor cell development and survival, including sensitivity to radiotherapy. In particular, miR-19a regulates the proliferation of cervical cancer cells, but its role in radiosensitivity is not known. Here, we describe the consequence of silencing miR-19a using antisense oligonucleotides (ASO) on the radiosensitivity of human cervical cancer SiHa cells. METHODS: Following transfection with miR-19a-ASO or control-ASO, SiHa cells were exposed to X-rays to determine their proliferation...
November 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/29332170/mirna-mrna-crosstalk-in-laryngeal-squamous-cell-carcinoma-based-on-the-tcga-database
#2
Guan-Jiang Huang, Meng-Si Luo, Guo-Ping Chen, Min-Yi Fu
BACKGROUND: The functional characterization of non-coding microRNAs (miRNAs) has been shown to be associated with the pathophysiology of the disease, but it is still a challenging task to elucidate the pathogenesis of microRNAs and disease. In addition, the understanding of the role of miRNAs in the development of LSCC still needs further exploration. MATERIALS AND METHODS: In this study, to identify miRNAs that play a key role in LSCC, we analyzed miRNA and mRNA sequence data from 162 LSCC samples from the TCGA database, and screened specific miRNAs and mRNAs by differential gene expression analysis...
January 13, 2018: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/29331887/idh1r132h-promotes-malignant-transformation-of-benign-prostatic-epithelium-by-dysregulating-micrornas-involvement-of-igf1r-akt-stat3-signaling-pathway
#3
Lili Zhang, Mei Qi, Tingting Feng, Jing Hu, Lin Wang, Xinjun Li, Wei Gao, Hui Liu, Meng Jiao, Zhen Wu, Xinnuo Bai, Yifan Bie, Long Liu, Bo Han
Risk stratification using molecular features could potentially help distinguish indolent from aggressive prostate cancer (PCa). Mutations in isocitrate dehydrogenase (IDH) acquire an abnormal enzymatic activity, resulting in the production of 2-hydroxyglutarate and alterations in cellular metabolism, histone modification, and DNA methylation. Mutant IDH1 has been identified in various human malignancies, and IDH1R132H constituted the vast majority of mutational events of IDH1. Most recent studies suggested that IDH1 mutations define a methylator subtype in PCa...
January 11, 2018: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/29331857/baicalin-alleviates-il-1%C3%AE-induced-inflammatory-injury-via-down-regulating-mir-126-in-chondrocytes
#4
Xirui Yang, Qi Zhang, Zhaomeng Gao, Chunyan Yu, Lei Zhang
Baicalin is a flavonoid extracted from Scutellaria baicalensis Georgi, with anti-inflammatory and anti-apoptotic activities. The objective of this study was to explore the effect and mechanism of baicalin on chondrocyte inflammatory response in OA. Different concentrations of IL-1β (0, 0.1, 2, 5 and 10 ng/mL) were used to simulate inflammatory injury in CHON-001 cells. The expression of miR-126 was altered by transfection with miR-126 mimic. Thereafter, cells were treated with baicalin, and cell viability, apoptosis, the expressions of apoptosis-related protein and pro-inflammatory factors were respectively detected using CCK-8 assay, flow cytometry, qRT-PCR and western blot analysis...
January 11, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29331856/schizandrin-a-enhances-chemosensitivity-of-colon-carcinoma-cells-to-5-fluorouracil-through-up-regulation-of-mir-195
#5
Dongfang Kong, Deyong Zhang, Xianqun Chu, Jing Wang
Nowadays 5-fluorouracil (5-FU)-based adjuvant chemotherapy is widely used for treating colon carcinoma. However, 5-FU resistance in the treatment of colon carcinoma has become more common and thereby new therapeutic strategies and new adjuvant drugs still need to be explored. Two 5-FU-resistant colon cancer cell lines, HCT116 and SW480, were used to investigate the effects of Schizandrin A (SchA), 5-FU, or their combination on cell viability and apoptosis. Besides, the role of miR-195 was studied to further clarify the specific function of SchA...
January 11, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29331762/suppression-of-capn4-by-microrna-1271-impedes-the-proliferation-and-invasion-of-colorectal-cancer-cells
#6
Jibin Li, Jian Xu, Xiaofei Yan, Keer Jin, Wenya Li, Rui Zhang
Accumulating evidence has suggested that calpain small subunit 1 (Capn4) plays an important role in the development and progression of malignant tumors. However, little is known about the role of Capn4 in colorectal cancer (CRC). In this study, we aimed to investigate the potential role of Capn4 in CRC and the regulation of Capn4 by microRNAs (miRNAs). Here, we found that Capn4 expression was highly up-regulated in CRC cell lines. Knockdown of Capn4 by siRNA significantly inhibited the proliferation and invasion of CRC cell lines...
January 10, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29331678/microrna-320-enhances-radiosensitivity-of-glioma-through-down-regulation-of-sirtuin-type-1-by-directly-targeting-forkhead-box-protein-m1
#7
Tengfei Li, Ji Ma, Xinwei Han, Yongxu Jia, Huifeng Yuan, Shaofeng Shui, Dong Guo
Glioma is the most common cancer in human brain system and seriously threatens human health. miRNA-320 has been demonstrated to be closely correlated with the development of glioma. However, its effect and molecular mechanism underlying radioresistance have not been fully elucidated in glioma. Here, RT-qPCR assay was used to assess the expressions of miR-320 and forkhead box protein M1 (FoxM1) mRNA in glioma tumor tissues and cells. The effects of miR-320, FoxM1 and sirtuin type 1 (Sirt1) on radiosensitivity in glioma cells were evaluated by clone formation assay, apoptosis assay, histone H2AX phosphorylation level (γH2AX) detection and caspase 3 activity analysis, respectively...
January 10, 2018: Translational Oncology
https://www.readbyqxmd.com/read/29331421/hyperglycaemia-induced-mir-301a-promotes-cell-proliferation-by-repressing-p21-and-smad4-in-prostate-cancer
#8
Xiaojuan Li, Jun Li, Yi Cai, Shubin Peng, Jun Wang, Zhaoming Xiao, Yu Wang, Yiran Tao, Jun Li, Qu Leng, Dinglan Wu, Shaodong Yang, Ziliang Ji, Yuefu Han, Liren Li, Xin Gao, Chunxian Zeng, Xingqiao Wen
Hyperglycaemia promotes the development of Prostate cancer (PCa). However, the roles of miRNAs in this disease process and the underlying mechanisms are largely unknown. In this study, we recruited 391 PCa patients in China and found that PCa patients with high level blood glucose (≥100 mg/dL) trended to have high Gleason score (GS≥7). miRNA-301a levels were significantly higher in prostate cancer than that in normal prostate tissues. Hyperglycaemia or high glucose treatment induced miR-301a expression in prostate tissues or PCa cell lines...
January 10, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29331413/eef-2-kinase-targeted-mir-449b-confers-radiation-sensitivity-to-cancer-cells
#9
Cheng Ji, QiongHua Xu, LingChuan Guo, XiaoHui Wang, YiJie Ren, HongHan Zhang, WeiDong Zhu, ZhiJun Ming, YunSheng Yuan, XingCong Ren, JianXun Song, Yan Cheng, JinMing Yang, Yi Zhang
The roles of microRNA in regulation of various biological processes and in modulation of therapeutic effects have been widely appreciated. In this study, we found a positive correlation between miR-449 b expression and radiation sensitivity in cancer cells and in tumor specimens from patients. We showed that eEF-2 kinase, a negative regulator of global protein synthesis, is a target of miR-449 b. Introducing a miR-449 b mimic into cancer cells led to suppression of eEF-2 kinase expression, leading to increases of protein synthesis and depletion of cellular ATP...
January 10, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29331391/microrna-mediated-regulation-of-splicing-factors-srsf1-srsf2-and-hnrnp-a1-in-context-of-their-alternatively-spliced-3-utrs
#10
Elżbieta Sokół, Hanna Kędzierska, Alicja Czubaty, Beata Rybicka, Katarzyna Rodzik, Zbigniew Tański, Joanna Bogusławska, Agnieszka Piekiełko-Witkowska
SRSF1, SRSF2 and hnRNP A1 are splicing factors that regulate the expression of oncogenes and tumor suppressors. SRSF1 and SRSF2 contribute to the carcinogenesis in the kidney. Despite their importance, the mechanisms regulating their expression in cancer are not entirely understood. Here, we investigated the microRNA-mediated regulation of SRSF1, SRSF2 and hnRNP A1 in renal cancer. The expression of microRNAs predicted to target SRSF1, SRSF2 and hnRNP A1 was disturbed in renal tumors compared with controls...
January 10, 2018: Experimental Cell Research
https://www.readbyqxmd.com/read/29331376/microrna-425-facilitates-pathogenic-th17-cell-differentiation-by-targeting-forkhead-box-o1-foxo1-and-is-associated-with-inflammatory-bowel-disease
#11
Xue Yang, Qinyu He, Zhenzhen Guo, Fei Xiong, Yi Li, Yan Pan, Caiping Gao, Liangping Li, Chong He
Inflammatory bowel disease (IBD) is a chronic autoimmune disease, and its pathogenesis remains mostly unknown. MicroRNAs (miRs) has drawn much attention as a crucial regulator of autoimmune diseases. In this study, we demonstrated, for the first time, that miR-425 was significantly up-regulated in peripheral blood mononuclear cells (PBMC) and mucosa of patients with IBD. In note, T helper (Th) 17 cells were found to be the major source of miR-425 expression. Using gain-of-function approaches, we demonstrated that miR-425 could facilitate the differentiation of CD4+ T cells into Th17 lineage...
January 10, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29331291/global-microrna-profiling-in-human-bone-marrow-skeletal-stromal-or-mesenchymal-stem-cells-identified-candidates-for-bone-regeneration
#12
Chi-Chih Chang, Morten T Venø, Li Chen, Nicholas Ditzel, Dang Q S Le, Philipp Dillschneider, Moustapha Kassem, Jørgen Kjems
Bone remodeling and regeneration are highly regulated multistep processes involving posttranscriptional regulation by microRNAs (miRNAs). Here, we performed a global profiling of differentially expressed miRNAs in bone-marrow-derived skeletal cells (BMSCs; also known as stromal or mesenchymal stem cells) during in vitro osteoblast differentiation. We functionally validated the regulatory effects of several miRNAs on osteoblast differentiation and identified 15 miRNAs, most significantly miR-222 and miR-423, as regulators of osteoblastogenesis...
December 5, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/29331104/inhibition-of-mircorna-34a-enhances-survival-of-human-bone-marrow-mesenchymal-stromal-stem-cells-under-oxidative-stress
#13
Yang Liu, Xiaohu Zhang, Jie Chen, Tingyu Li
BACKGROUND Mesenchymal stromal/stem cells (MSCs) are broadly used for many diseases, but the efficacy of MSC engraftment is very low due to low viability and high cell death rate under a stressful microenvironment. The present study aimed to investigate whether microRNA-34a (miR-34a), which is a downstream target of P53, is involved in H2O2-induced MSC cell death. MATERIAL AND METHODS Human bone marrow MSCs (hMSCs) were purchased from Lonza and were cultured as previously described. hMSCs were transfected with miR-34a inhibitor and exposed to H2O2...
January 13, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29331043/role-of-mir-203-in-estrogen-receptor-mediated-signaling-in-the-rat-uterus-and-endometrial-carcinoma
#14
Oliver Zierau, Janina Helle, Sabina Schadyew, Yanni Morgenroth, Martin Bentler, Alexander Hennig, Sridar Chittur, Martin Tenniswood, Georg Kretzschmar
The role of microRNAs (miRNA) in estrogen receptor (ER) signaling in the uterus and in endometrial cancer is not well understood. We therefore analyzed miRNA expression in uterine samples from a standard three-day uterotrophic assay using young female adult rats to identify E2-regulated miRNAs. Microarray analysis identified 47 E2 down-regulated miRNAs including miR-30a, and 25 E2up-regulated miRNAs including miR-672, miR-203 and miR-146b. The strongly E2-upregulated miR-203 was selected for further analysis...
January 13, 2018: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29331036/prognostic-significance-of-mir-21-and-pdcd4-in-patients-with-stage-ii-esophageal-carcinoma-after-surgical-resection
#15
Jiandong Zhang, Lei Ma, Daimeng Shi, Zhen Zhang, Chuanshan Yao, Xulin Zhao, Quanxiao Xu, Penghao Wen, Limin He
Many studies have shown that randomized clinical trial with long-term follow-up found no improvement in stage II esophageal carcinoma (EC) patients receiving preoperative neoadjuvant chemoradiotherapy or chemotherapy treatment, this limitation underscored the urgent need for novel and reliable biomarkers for prognosis and prediction in stage II EC. miR-21 is frequently over-expressed while programmed cell death 4 (PDCD4) is often down-regulated in solid tumors. This study aimed to investigate the clinicopathological and prognostic significance of miR-21 and PDCD4 expression and to elucidate any correlation between miR-21 and PDCD4 expression in stage II EC patients...
January 13, 2018: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29331027/mir-137-functions-as-a-tumor-suppressor-in-pancreatic-cancer-by-targeting-mrgbp
#16
Feng Ding, Shuang Zhang, Shaoyang Gao, Jian Shang, Yanxia Li, Ning Cui, Qiu Zhao
miRNAs are small noncoding RNAs that act as critical epigenetic regulators in tumor carcinogenesis. In this study, our data showed that miR-137 was significantly downregulated in 58 pairs of human pancreatic cancer (PanCa) tissues and PanCa cell lines. Furthermore, the deregulated miR-137 was correlated with increased tumor size, higher TNM stage, and worse prognosis in pancreatic cancer. Functional studies demonstrated that overexpression of miR-137 dramatically suppressed cell proliferation and induced cell apoptosis in vitro...
January 13, 2018: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29330800/evaluation-of-erythrocyte-changes-after-normoxic-return-from-hypoxia
#17
Jihyun Song, Josef T Prchal
Hypoxia increases erythropoiesis by hypoxia-inducible factors (HIF), principally by HIF-2, which upregulates erythropoietin transcription. This results in an increase of red blood cell (RBC) production and delivery of more oxygen to tissues. Upon rapid return to normoxia, hypoxia-induced polycythemia is overcorrected by neocytolysis, a transient destruction of preferentially young RBCs bearing low catalase (downregulated by hypoxia-stimulated microRNA(miR)-21) caused by reactive oxygen species (ROS) from expanded mitochondria...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29330775/a-peg-based-method-for-the-isolation-of-urinary-exosomes-and-its-application-in-renal-fibrosis-diagnostics-using-cargo-mir-29c-and-mir-21-analysis
#18
Chun-Yan Lv, Wei-Jun Ding, Yi-Li Wang, Zi-Yi Zhao, Jin-Hui Li, Yan Chen, Jiao Lv
PURPOSE: To assess a new and highly specific, but low-cost, easily performed and suitable for large-scale applications method for renal fibrosis (RF) diagnostics. METHODS: Thirty-five RF and twenty non-RF patients were enrolled in the study. An appropriate polyethylene glycol (PEG) was used to isolate urinary exosomes. The efficiency of isolation process was evaluated by the morphology and size observation, as well as the detection of specific markers (CD63, CD9)...
January 12, 2018: International Urology and Nephrology
https://www.readbyqxmd.com/read/29330773/mechanistic-regulation-of-epithelial-to-mesenchymal-transition-through-ras-signaling-pathway-and-therapeutic-implications-in-human-cancer
#19
REVIEW
Kiran Tripathi, Minal Garg
RAS effector signaling instead of being simple, unidirectional and linear cascade, is actually recognized as highly complex and dynamic signaling network. RAF-MEK-ERK cascade, being at the center of complex signaling network, links to multiple scaffold proteins through feed forward and feedback mechanisms and dynamically regulate tumor initiation and progression. Three isoforms of Ras harbor mutations in a cell and tissue specific manner. Besides mutations, their epigenetic silencing also attributes them to exhibit oncogenic activities...
January 12, 2018: Journal of Cell Communication and Signaling
https://www.readbyqxmd.com/read/29330743/acute-downregulation-of-mir-155-leads-to-a-reduced-collagen-synthesis-through-attenuating-macrophages-inflammatory-factor-secretion-by-targeting-ship1
#20
Longlong Yang, Lingying Liu, Huinan Ying, Yonghui Yu, Donghai Zhang, Huping Deng, Haijun Zhang, Jiake Chai
Fibrosis, tightly associated with fibroblasts collagen synthesis, is related closely with inflammatory response. Our previously study found that acute downregulation of miR-155 at wound sites leads to a reduced fibrosis, however its particular mechanism is unclear. Herein, we aimed to explore the mechanism of miR-155 in reducing fibrosis. We first found that down-regulation of miR-155 inhibited macrophages transforming growth factor-β1 (TGF-β1) and IL-1β secretion. Next, we found that co-cultured with macrophages increased the proliferation and collagen synthesis of fibroblasts, and downregulation of miR-155 in macrophages could effectively attenuate the accelerative effects...
January 12, 2018: Journal of Molecular Histology
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