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MiR-181b

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https://www.readbyqxmd.com/read/29777112/micrornas-as-potential-therapeutics-to-enhance-chemosensitivity-in-advanced-prostate-cancer
#1
Hui-Ming Lin, Iva Nikolic, Jessica Yang, Lesley Castillo, Niantao Deng, Chia-Ling Chan, Nicole K Yeung, Eoin Dodson, Benjamin Elsworth, Calan Spielman, Brian Y Lee, Zoe Boyer, Kaylene J Simpson, Roger J Daly, Lisa G Horvath, Alexander Swarbrick
Docetaxel and cabazitaxel are taxane chemotherapy treatments for metastatic castration-resistant prostate cancer (CRPC). However, therapeutic resistance remains a major issue. MicroRNAs are short non-coding RNAs that can silence multiple genes, regulating several signalling pathways simultaneously. Therefore, synthetic microRNAs may have therapeutic potential in CRPC by regulating genes involved in taxane response and minimise compensatory mechanisms that cause taxane resistance. To identify microRNAs that can improve the efficacy of taxanes in CRPC, we performed a genome-wide screen of 1280 microRNAs in the CRPC cell lines PC3 and DU145 in combination with docetaxel or cabazitaxel treatment...
May 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29705934/exosomes-secreted-by-adipose-derived-stem-cells-contribute-to-angiogenesis-of-brain-microvascular-endothelial-cells-following-oxygen-glucose-deprivation-in-vitro-through-microrna-181b-trpm7-axis
#2
Yujia Yang, Yue Cai, Yuan Zhang, Juan Liu, Zhiqiang Xu
Adipose-derived stem cells (ADSCs) have been demonstrated to promote cerebral vascular remodeling processes after stroke. However, the exact molecular mechanism by which ADSCs exert protective roles in ischemic stroke is still poorly understood. In this study, we identified the role of exosomal microRNA-181b-5p (181b-Exos) in regulating post-stroke angiogenesis. The results of migration assay and capillary network formation assay showed that exosomes secreted by ADSCs (ADSCs-Exos) promoted the mobility and angiogenesis of brain microvascular endothelial cells (BMECs) after oxygen-glucose deprivation (OGD)...
April 29, 2018: Journal of Molecular Neuroscience: MN
https://www.readbyqxmd.com/read/29658571/upregulation-of-hoxa1-promotes-tumorigenesis-and-development-of-non%C3%A2-small-cell-lung-cancer-a-comprehensive-investigation-based-on-reverse-transcription-quantitative-polymerase-chain-reaction-and-bioinformatics-analysis
#3
Yu Zhang, Xiao-Jiao Li, Rong-Quan He, Xiao Wang, Tong-Tong Zhang, Yuan Qin, Rui Zhang, Yun Deng, Han-Lin Wang, Dian-Zhong Luo, Gang Chen
Homeobox A1 (HOXA1) serves an oncogenic role in multiple cancer types. However, the role of HOXA1 in non‑small cell lung cancer (NSCLC) remains unclear. In the present study, use of reverse transcription-quantitative polymerase chain reaction and the databases of The Cancer Genome Atlas (TCGA), Oncomine, Gene Expression Profiling Interactive Analysis and the Multi Experiment Matrix were combined to assess the expression of HOXA1 and its co-expressed genes in NSCLC. Bioinformatic analyses, such as Gene Ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG), and network and protein-protein interaction analyses, were used to investigate the underlying molecular mechanism effected by the co-expressed genes...
April 16, 2018: International Journal of Oncology
https://www.readbyqxmd.com/read/29626608/regulation-and-function-of-runt-related-transcription-factors-runx1-and-runx2-in-goat-granulosa-cells
#4
Kexin Gao, Peijie Wang, Jiayin Peng, Junjun Xue, Kaiwen Chen, Yuxuan Song, Jiangang Wang, Guang Li, Xiaopeng An, Binyun Cao
Transcription factors, runt-related transcription factor 1 (RUNX1) and 2 (RUNX2), belong to the runt-related (RUNX) gene family and play critical roles in mammalian reproduction processes. However, the regulatory mechanisms of RUNX1 and RUNX2 expression or their functions in goat follicles remain largely unknown. Herein, RUNX1 and RUNX2 proteins were detected in the oocytes and granulosa cells of preantral and antral follicles, as well as corpus luteum by immunohistochemistry. Treatments with human chorionic gonadotropin (hCG) or with the agonists and inhibitors of hCG-induced intracellular signaling pathways in granulosa cells in vitro, we found that hCG increased RUNX1 expression by activating PKC and PI3K signaling molecules, and increased RUNX2 expression by activating adenylate cyclase, PKC, and PI3K signaling molecules...
April 4, 2018: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/29608948/mir-181b-regulates-autophagy-in-a-model-of-parkinson-s-disease-by-targeting-the-pten-akt-mtor-signaling-pathway
#5
Wei Li, Yongmei Jiang, Yuan Wang, Shaonan Yang, Xinran Bi, Xudong Pan, Aijun Ma, Wei Li
OBJECTIVE: Parkinson's disease (PD) is the second most common neurodegenerative disease. Recent studies have shown that dysregulation of microRNA plays an important role in PD, and defects in autophagy are also critically associated with mechanisms underlying PD. We aim to investigate the effect of miR-181b on autophagy, particularly the involvement of miR-181b in the regulation of the phosphatase and tensin homolog (PTEN)/protein kinase B (Akt)/mammalian target of rapamycin (mTOR) pathway and neuronal autophagy in a 1-methyl-4- phenylpyridinium iodide(MPP+ )-induced cellular model of Parkinson's disease...
March 30, 2018: Neuroscience Letters
https://www.readbyqxmd.com/read/29607782/influence-of-overweight-and-obesity-on-circulating-inflammation-related-microrna
#6
Jamie G Hijmans, Kyle J Diehl, Tyler D Bammert, Philip J Kavlich, Grace M Lincenberg, Jared J Greiner, Brian L Stauffer, Christopher A DeSouza
BACKGROUND: Increased cardiovascular disease risk and prevalence associated with overweight and obesity is due, in part, to heightened inflammatory burden. The mechanisms underlying adiposity-related amplification of inflammation are not fully understood. Alterations in regulators of inflammatory processes such as microRNAs (miRs), however, is thought to play a pivotal role. OBJECTIVE: The aim of this study was to determine the influence of overweight and obesity, independent of other cardiovascular risk factors, on circulating expression of miR-34a, miR-126, miR-146a, miR-150 and miR-181b...
April 2, 2018: MicroRNA
https://www.readbyqxmd.com/read/29604207/hepatitis-b-virus-x-protein-promotes-proliferation-of-hepatocellular-carcinoma-cells-by-upregulating-mir-181b-via-targeting-ing5
#7
Xuhua Xie, Xiaopei Xu, Changyu Sun, Zujiang Yu
Hepatitis B virus X protein (HBx) played a key role in the development of hepatitis B virus (HBV)-related hepatocellular carcinoma (HCC). Emerging evidence has demonstrated that miR-181b and the inhibitor of growth protein 5 (ING5) participated in the pathophysiological process. However, the regulatory mechanism of HBx remained unknown. The expression of miR-181b and ING5 in HCC tissues and cell lines were examined using quantitative real-time PCR (qRT-PCR) and Western blotting. Cell viability was determined using MTT method following HCC cell lines transfection...
March 1, 2018: Biological Chemistry
https://www.readbyqxmd.com/read/29601548/roles-of-nf-%C3%AE%C2%BAb-signaling-in-the-regulation-of-mirnas-impacting-on-inflammation-in-cancer
#8
REVIEW
Georgios S Markopoulos, Eugenia Roupakia, Maria Tokamani, Georgia Alabasi, Raphael Sandaltzopoulos, Kenneth B Marcu, Evangelos Kolettas
The NF-κB family of transcription factors regulate the expression of genes encoding proteins and microRNAs (miRNA, miR) precursors that may either positively or negatively regulate a variety of biological processes such as cell cycle progression, cell survival, and cell differentiation. The NF-κB-miRNA transcriptional regulatory network has been implicated in the regulation of proinflammatory, immune, and stress-like responses. Gene regulation by miRNAs has emerged as an additional epigenetic mechanism at the post-transcriptional level...
March 30, 2018: Biomedicines
https://www.readbyqxmd.com/read/29587610/ngs-analysis-of-human-embryo-culture-media-reveals-mirnas-of-extra-embryonic-origin
#9
Immaculada Sánchez-Ribas, Patricia Diaz-Gimeno, Alicia Quiñonero, María Ojeda, Zaloa Larreategui, Agustín Ballesteros, Francisco Domínguez
Our objective in this work was to isolate, identify, and compare micro-RNAs (miRNAs) found in spent culture media of euploid and aneuploid in vitro fertilization (IVF) embryos. Seventy-two embryos from 62 patients were collected, and their spent media were retained. A total of 108 spent conditioned media samples were analyzed (n = 36 day 3 euploid embryos, n = 36 day 3 aneuploid embryos, and n = 36 matched control media). Fifty hed-control media embryos were analyzed using next-generation sequencing (NGS) technology...
January 1, 2018: Reproductive Sciences
https://www.readbyqxmd.com/read/29587404/identification-of-dysregulated-microrna-networks-in-schwann-cell-like-cultures-exposed-to-immune-challenge-potential-crosstalk-with-the-protective-vip-pacap-neuropeptide-system
#10
Giuseppe Musumeci, Gian Marco Leggio, Rubina Marzagalli, Ghaith Al-Badri, Filippo Drago, Alessandro Castorina
Following peripheral nerve injury, dysregulations of certain non-coding microRNAs (miRNAs) occur in Schwann cells. Whether these alterations are the result of local inflammation and/or correlate with perturbations in the expression profile of the protective vasoactive intestinal peptide (VIP)/pituitary adenylate cyclase-activating polypeptide (PACAP) system is currently unknown. To address these issues, we aimed at profiling the expression of selected miRNAs in the rat RT4 Schwann cell line. Cells exposed to lipopolysaccharide (LPS), to mimic the local inflammatory milieu, were appraised by real-time qPCR, Western blot and ELISAs...
March 25, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29534065/microrna-signatures-for-circulating-cd133-positive-cells-in-hepatocellular-carcinoma-with-hcv-infection
#11
Abdel-Rahman N Zekri, Enas Reda El-Sisi, Amira Salah El-Din Youssef, Mahmoud M Kamel, Auhood Nassar, Ola Sayed Ahmed, Mohamed El Kassas, Ahmed Barakat Barakat, Alaa Ismail Abd El-Motaleb, Abeer A Bahnassy
AIM: Molecular characterization of the CD133+ stem cells associated with hepatocarinogensis through identifying the expression patterns of specific microRNAs (miRNAs). METHODS: We investigated the expression pattern of 13 miRNAs in purified CD133+ cells separated from the peripheral blood of healthy volunteers, chronic hepatitis C (CHC), liver cirrhosis (LC) and hepatocellular carcinoma (HCC) patients a long with bone marrow samples from the healthy volunteers and the LC patients using custom miScript miRNA PCR array...
2018: PloS One
https://www.readbyqxmd.com/read/29434967/celastrol-suppresses-the-proliferation-of-lung-adenocarcinoma-cells-by-regulating-microrna-24-and-microrna-181b
#12
Yun-Fei Yan, Han-Han Zhang, Qing Lv, Yue-Mei Liu, You-Jie Li, Bao-Sheng Li, Ping-Yu Wang, Wen-Jing Shang, Zhen Yue, Shu-Yang Xie
Cumulative evidence has indicated that celastrol may suppress cancer growth; however, the underlying mechanism requires further investigation. In the present study, A549 cells were treated with various concentrations of celastrol. Lung cancer cell proliferation was evaluated using an MTT assay and observed under a microscope. Cell apoptosis was detected by Annexin V fluorescein isothiocyanate/propidium iodide double-labeled flow cytometry. The results demonstrated that celastrol suppressed proliferation and induced apoptosis in a dose-independent manner...
February 2018: Oncology Letters
https://www.readbyqxmd.com/read/29402939/p38-activation-induces-production-of-mir-146a-and-mir-31-to-repress-e-selectin-expression-and-inhibit-transendothelial-migration-of-colon-cancer-cells
#13
Liang Zhong, Jacques Huot, Martin J Simard
Extravasation of circulating cancer cells determines their metastatic potential. This process is initiated by the adhesion of cancer cells to vascular endothelial cells through specific interactions between endothelial adhesion receptors such as E-selectin and their ligands on cancer cells. In the present study, we show that miR-146a and miR-181b impede the expression of E-selectin by repressing the activity of its transcription factor NF-κB, thereby impairing the metastatic potentials of colon cancer cells by decreasing their adhesion to, and migration through, the endothelium...
February 5, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29402262/effects-of-panax-notoginseng-saponins-on-severe-acute-pancreatitis-through-the-regulation-of-mtor-akt-and-caspase-3-signaling-pathway-by-upregulating-mir-181b-expression-in-rats
#14
Ming-Wei Liu, Rui Wei, Mei-Xian Su, Hui Li, Tian-Wen Fang, Wei Zhang
BACKGROUND: In China, Panax notoginseng has been used to treat oxidative stress-related diseases for a long time. Panax notoginseng saponins is an extract from Panax notoginseng Ledeb. Its therapeutic potential is related to antioxidant activity, but related mechanisms are still unclear. The study aims to assess the protection effects of Panax notoginseng saponins in the taurocholate-induced rat model of acute pancreatitis (AP) and explore underlying mechanisms. METHODS: A rat model of severe acute pancreatitis (SAP) was established in rats induced with taurocholate...
February 5, 2018: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/29389970/decreased-production-of-class-switched-antibodies-in-neonatal-b-cells-is-associated-with-increased-expression-of-mir-181b
#15
Stephanie Glaesener, Christine Jaenke, Anika Habener, Robert Geffers, Petra Hagendorff, Katrin Witzlau, Esther Imelmann, Andreas Krueger, Almut Meyer-Bahlburg
The increased susceptibility to infections of neonates is caused by an immaturity of the immune system as a result of both qualitative and quantitative differences between neonatal and adult immune cells. With respect to B cells, neonatal antibody responses are known to be decreased. Accountable for this is an altered composition of the neonatal B cell compartment towards more immature B cells. However, it remains unclear whether the functionality of individual neonatal B cell subsets is altered as well. In the current study we therefore compared phenotypical and functional characteristics of corresponding neonatal and adult B cell subpopulations...
2018: PloS One
https://www.readbyqxmd.com/read/29382357/the-mir-181-family-promotes-cell-cycle-by-targeting-ctdspl-a-phosphatase-like-tumor-suppressor-in-uveal-melanoma
#16
Leilei Zhang, Xiaoyu He, Fang Li, Hui Pan, Xiaolin Huang, Xuyang Wen, He Zhang, Bin Li, Shengfang Ge, Xiaofang Xu, Renbing Jia, Xianqun Fan
BACKGROUND: MicroRNAs (miRNAs) have been shown to function in many different cellular processes, including proliferation, apoptosis, differentiation and development. miR-181a, -181b, -181c and -181d are miR-181 members of the family, which has been rarely studied, especially uveal melanoma. METHODS: The expression level of miR-181 family in human uveal melanoma cell lines was measured via real-time PCR (RT-PCR). The function of miR-181 on cell cycle was detected through Flow Cytometry assay...
January 30, 2018: Journal of Experimental & Clinical Cancer Research: CR
https://www.readbyqxmd.com/read/29378234/circular-rna-csmarca5-inhibits-growth-and-metastasis-in-hepatocellular-carcinoma
#17
Jian Yu, Qing-Guo Xu, Zhen-Guang Wang, Yuan Yang, Ling Zhang, Jin-Zhao Ma, Shu-Han Sun, Fu Yang, Wei-Ping Zhou
BACKGROUND & AIMS: In recent years, circular RNAs (circRNAs) have been shown to have critical regulatory roles in cancer biology. However, the contributions of circRNAs to hepatocellular carcinoma (HCC) remain largely unknown. METHODS: cSMARCA5 (a circRNA derived from exons 15 and 16 of the SMARCA5 gene, hsa_circ_0001445) was identified by RNA-sequencing and validated by quantitative reverse transcription PCR. The role of cSMARCA5 in HCC progression was assessed both in vitro and in vivo...
January 31, 2018: Journal of Hepatology
https://www.readbyqxmd.com/read/29374690/microrna-expression-in-kras-and-braf-mutated-colorectal-cancers
#18
Ida V Lundberg, Maria L Wikberg, Ingrid Ljuslinder, Xingru Li, Robin Myte, Carl Zingmark, Anna Löfgren-Burström, Sofia Edin, Richard Palmqvist
BACKGROUND/AIM: KRAS and BRAF are two genes commonly mutated in colorectal cancer (CRC). Even though BRAF is a downstream target of KRAS in the MAPK signalling pathway, KRAS- and BRAF-mutated CRCs are found to display several different clinical and histopathological features. We investigated whether a differential expression of microRNAs (miRNAs) could explain the clinicopathological differences seen between KRAS- and BRAF-mutated CRCs. MATERIALS AND METHODS: Using a PCR array, we analyzed the expression of 84 different miRNAs in CRC cell lines wild-type in KRAS and BRAF, or mutated in KRAS or BRAF...
February 2018: Anticancer Research
https://www.readbyqxmd.com/read/29324442/the-epithelial-to-mesenchymal-transition-activator-zeb1-initiates-a-prometastatic-competing-endogenous-rna-network
#19
Xiaochao Tan, Priyam Banerjee, Xin Liu, Jiang Yu, Don L Gibbons, Ping Wu, Kenneth L Scott, Lixia Diao, Xiaofeng Zheng, Jing Wang, Ali Jalali, Milind Suraokar, Junya Fujimoto, Carmen Behrens, Xiuping Liu, Chang-Gong Liu, Chad J Creighton, Ignacio I Wistuba, Jonathan M Kurie
Epithelial tumor cells undergo epithelial-to-mesenchymal transition (EMT) to gain metastatic activity. Competing endogenous RNAs (ceRNAs) have binding sites for a common set of microRNAs (miRs) and regulate each other's expression by sponging miRs. Here, we address whether ceRNAs govern metastasis driven by the EMT-activating transcription factor ZEB1. High miR-181b levels were correlated with an improved prognosis in human lung adenocarcinomas, and metastatic tumor cell lines derived from a murine lung adenocarcinoma model in which metastasis is ZEB1-driven were enriched in miR-181b targets...
April 2, 2018: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29319157/mir-181b-induced-smad7-downregulation-controls-granulosa-cell-apoptosis-through-tgf-%C3%AE-signaling-by-interacting-with-the-tgfbr1-promoter
#20
Wang Yao, Zengxiang Pan, Xing Du, Jinbi Zhang, Qifa Li
SMAD7 disrupts the TGF-β signaling pathway by influencing TGFBR1 stability and by blocking the binding of TGFBR1 to SMAD2/3. In this study, we showed that SMAD7 attenuated the TGF-β signaling pathway in ovarian granulosa cells (GCs) by regulating TGFBR1 transcriptional activity. To function as a transcription factor, SMAD7 downregulated the mRNA levels of TGFBR1 via direct binding to the SMAD-binding elements (SBEs) within the promoter region of pig TGFBR1. We also showed that SMAD7 enhanced porcine GC apoptosis by interrupting TGFBR1 and the TGF-β signaling pathway...
January 10, 2018: Journal of Cellular Physiology
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