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MiR-146

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https://www.readbyqxmd.com/read/28407626/exogenous-mirna-146a-enhances-the-therapeutic-efficacy-of-human-mesenchymal-stem-cells-by-increasing-vascular-endothelial-growth-factor-secretion-in-the-ischemia-reperfusion-injured-heart
#1
Hyang-Hee Seo, Se-Yeon Lee, Chang Youn Lee, Ran Kim, Pilseog Kim, Sekyung Oh, Hojin Lee, Min Young Lee, Jongmin Kim, Lark Kyun Kim, Ki-Chul Hwang, Woochul Chang
Adult stem cells have been studied as a promising therapeutic modality for the functional restoration of the damaged heart. In the present study, a strategy for enhancing the angiogenic efficacy of human mesenchymal stem cells (hMSCs) using micro-RNA was examined. We investigated whether micro-RNA-146a (miR-146a) influences the secretion of vascular endothelial growth factor (VEGF) and angiogenesis of MSCs. Our data indicated that miR-146a-transfected hMSCs (hMSCmiR-146a) decreased the expression of neurofibromin 2, an inhibitor of p21-activated kinase-1 (PAK1)...
April 14, 2017: Journal of Vascular Research
https://www.readbyqxmd.com/read/28346483/effect-of-mir-146-targeted-hdmcp-up-regulation-in-the-pathogenesis-of-nonalcoholic-steatohepatitis
#2
Xi Jin, Jiang Liu, Yi-Peng Chen, Zun Xiang, Jie-Xia Ding, You-Ming Li
BACKGROUNDS/AIMS: Mitochondrial dysfunction plays an important role inthe pathogenesis of nonalcoholic steatohepatitis (NASH), where uncoupling protein (UCP) is actively involved. We previously reported the uncoupling activity of HDMCP and its role in liver steatosis. We now aim to investigate the degree and therapeutic effect of HDMCP in NASH and the regulatory role of miR-146 on HDMCP. METHODS: NASH animal model was established by feeding BALB/c mice with MCD diet while L02 cell was cultured with high concentration of fatty acid (HFFA) for 72h to mimic the steatosis and inflammation of NASH in-vitro appearance...
2017: PloS One
https://www.readbyqxmd.com/read/28338190/the-role-of-mir-146a-in-modulating-traf6-induced-inflammation-during-lupus-nephritis
#3
C-Z Zheng, Y-B Shu, Y-L Luo, J Luo
OBJECTIVE: Lupus nephritis (LN) is a major complication of systemic lupus erythematosus (SLE). A previous study showed decreased expression level of microRNA (miR)-146a in LN patients, indicating its possible role in LN pathogenesis. PATIENTS AND METHODS: A total of 98 LN patients were recruited, for the collection of renal tissue samples during biopsy or surgery. Another cohort of 15 patients who had renal tumor resection was recruited as the control group, for the further comparison of expression levels of miR-146a, TRAF6 and p-p65 in tissues...
March 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28297724/intraocular-delivery-of-mir-146-inhibits-diabetes-induced-retinal-functional-defects-in-diabetic-rat-model
#4
Pei Zhuang, Chithra K Muraleedharan, Shunbin Xu
Purpose: Previously, we showed that microRNA-146 (miR-146) is a pivotal negative feedback regulator of multiple nuclear factor kappa-B (NF-κB) activation pathways in retinal endothelial cells (RECs). We hypothesized that miR-146 plays an important role in diabetic retinopathy (DR) by inhibiting diabetes-induced inflammatory response in the retina. The purpose of the current study is to test this hypothesis in vivo. Methods: Lentiviruses expressing rno-miR-146a, lenti-miR-146a, and negative control oligonucleotide with scrambled sequence, lenti-miR-neg ctl, were produced...
March 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28219342/effects-of-exposure-to-streptococcus-iniae-on-microrna-expression-in-the-head-kidney-of-genetically-improved-farmed-tilapia-oreochromis-niloticus
#5
Jun Qiang, Fanyi Tao, Jie He, Lanyi Sun, Pao Xu, Wenjin Bao
BACKGROUND: Genetically improved farmed tilapia (GIFT, Oreochromis niloticus) are susceptible to infection by Streptococcus iniae when maintained in modern intensive culture systems. GIFT are commercially important fishes that are cultured widely in southern China. The role of microRNAs (miRNAs) in the regulatory response of GIFT to S. iniae infection has been underestimated and has not yet been well studied. Head kidney has an important immune function in teleost fishes. The main aim of this study was to determine the possible function of miRNAs in head kidney of S...
February 20, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28213571/mir-146a-b-a-family-with-shared-seeds-and-different-roots
#6
Mark Paterson, Alison J Kriegel
MicroRNAs are small, non-coding, RNAs known for their powerful modulation of molecular processes, making them a major focus for studying pathological mechanisms. The human miR-146 family of microRNAs consists of two member genes - MIR146A and MIR146B These two miRNAs are located on different chromosomes and exhibit differential regulation in many cases. However, they are nearly identical in sequence and share a seed sequence, thus they are predicted to target the same set of genes. A large proportion of the miR-146 literature focuses on its role in regulating the innate immune response in the context of various pathologies by modulating two widely studied target genes in the toll-like receptor signaling cascade...
February 17, 2017: Physiological Genomics
https://www.readbyqxmd.com/read/27917303/mir-146a-is-upregulated-during-retinal-pigment-epithelium-rpe-choroid-aging-in-mice-and-represses-il-6-and-vegf-a-expression-in-rpe-cells
#7
Yi Hao, Qinbo Zhou, Jing Ma, Yun Zhao, Shusheng Wang
PURPOSE: MicroRNA-146a (miR-146a) has been proposed as a marker for age-associated inflammation, or "inflammaging", acting as a negative regulator of cellular senescence and pro-inflammatory signaling pathways. However, the regulation and function of miR-146 during ocular aging remains unclear. Here we propose that miR-146 is regulated during aging of the retina and choroid, and functions in retinal pigment epithelial (RPE) cells to regulate key genes involved in inflammation and angiogenesis...
June 2016: Journal of Clinical & Experimental Ophthalmology
https://www.readbyqxmd.com/read/27893422/pttg1-regulated-by-mir-146-3p-promotes-bladder-cancer-migration-invasion-metastasis-and-growth
#8
Wei Xiang, Xinchao Wu, Chao Huang, Miao Wang, Xian Zhao, Gang Luo, Yawei Li, Guosong Jiang, Xingyuan Xiao, Fuqing Zeng
Pituitary tumor-transforming gene 1 (PTTG1) is identified as an oncogene, and overexpresses in many tumors. However, the role of PTTG1 in bladder cancer (BC) hasn't yet been characterized well. In this study, we showed the expression of PTTG1 mRNA and protein were both significantly increased in BC tissues and cells. The PTTG1 protein levels were positive correlated with increased tumor size, tumor-node-metastasis (TNM) stage, lymphatic invasion and distant metastasis of BC. PTTG1 knockdown dramatically suppressed the migration, invasion, metastasis and growth, and induced senescence and cell-cycle arrest at G0/G1 phase of BC cells...
January 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/27586203/mirna-expression-profiling-of-noninvasive-follicular-thyroid-neoplasms-with-papillary-like-nuclear-features-compared-with-adenomas-and-infiltrative-follicular-variants-of-papillary-thyroid-carcinomas
#9
Nicla Borrelli, Maria Denaro, Clara Ugolini, Anello Marcello Poma, Mario Miccoli, Paolo Vitti, Paolo Miccoli, Fulvio Basolo
Follicular variants of papillary thyroid carcinoma include encapsulated (with or without capsular/vascular invasion) and infiltrative forms, which have different clinical behaviors. The encapsulated forms that lack capsular invasion have an indolent clinical behavior that is similar to benign lesions; therefore, they were recently reclassified as 'noninvasive follicular thyroid neoplasms with papillary-like nuclear features' (NIFTPs). Because NIFTPs have nuclear features of papillary carcinomas, distinguishing between NIFTPs and infiltrative follicular variant of papillary thyroid carcinoma is almost impossible with cytological examination...
January 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/27585977/micrornas-in-allergic-disease
#10
Eishika Dissanayake, Yuzaburo Inoue
PURPOSE OF REVIEW: MicroRNAs (miRNAs) are short, single-stranded, non-coding RNAs that are increasingly being recognized as important epigenetic regulators. They have been implicated in the pathogenesis of many diseases including cancer, cardiovascular diseases, connective tissue diseases, and neuromuscular disorders. RECENT FINDINGS: A few miRNAs have already been recognized as a core set of miRNAs important in allergic inflammation. These include let-7, miR-21, miR-142, and miR-146...
September 2016: Current Allergy and Asthma Reports
https://www.readbyqxmd.com/read/27558530/pancreas-enriched-mirnas-are-altered-in-the-circulation-of-subjects-with-diabetes-a-pilot-cross-sectional-study
#11
Attila A Seyhan, Yury O Nunez Lopez, Hui Xie, Fanchao Yi, Clayton Mathews, Magdalena Pasarica, Richard E Pratley
The clinical presentation of diabetes sometimes overlaps, contributing to ambiguity in the diagnosis. Thus, circulating pancreatic islet-enriched microRNAs (miRNAs) might be useful biomarkers of β-cell injury/dysfunction that would allow more accurate subtyping of diabetes. We measured plasma levels of selected miRNAs in subjects with prediabetes (n = 12), type 2 diabetes (T2D, n = 31), latent autoimmune diabetes of adults (LADA, n = 6) and type 1 diabetes (T1D, n = 16) and compared them to levels in healthy control subjects (n = 27)...
2016: Scientific Reports
https://www.readbyqxmd.com/read/27516962/traumatic-brain-injury-increases-levels-of-mir-21-in-extracellular-vesicles-implications-for-neuroinflammation
#12
Emily B Harrison, Colleen G Hochfelder, Benjamin G Lamberty, Brittney M Meays, Brenda M Morsey, Matthew L Kelso, Howard S Fox, Sowmya V Yelamanchili
Traumatic brain injury (TBI) is an important health concern and effective treatment strategies remain elusive. Understanding the complex multicellular response to TBI may provide new avenues for intervention. In the context of TBI, cell-cell communication is critical. One relatively unexplored form of cell-cell communication in TBI is extracellular vesicles (EVs). These membrane-bound vesicles can carry many different types of cargo between cells. Recently, miRNA in EVs have been shown to mediate neuroinflammation and neuronal injury...
August 2016: FEBS Open Bio
https://www.readbyqxmd.com/read/27497395/association-of-microrna-146-with-middle-ear-hyperplasia-in-pediatric-otitis-media
#13
Tina L Samuels, Justin Yan, Pawjai Khampang, Alexander MacKinnon, Wenzhou Hong, Nikki Johnston, Joseph E Kerschner
OBJECTIVE: Toll-like receptor signaling activated by bacterial otitis media pathogens in the middle ear has been shown to play a key role in OM susceptibility, pathogenesis and recovery. Recent studies implicate microRNA 146 (miR-146) in regulation of inflammation via negative feedback of toll-like receptor signaling (TLR) in a wide variety of tissues, however its involvement in otitis media is unknown. METHODS: Human middle ear epithelial cells were stimulated with proinflammatory cytokines, interleukin 1 beta or tumor necrosis factor alpha, for two to twenty-four hours...
September 2016: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/27494344/role-of-mir-146a-in-the-regulation-of-inflammation-in-an-in-vitro-model-of-graves-orbitopathy
#14
Sun Young Jang, Min Kyung Chae, Joon H Lee, Eun Jig Lee, Jin Sook Yoon
PURPOSE: To investigate the role of microRNA 146a (miR-146a) in the regulation of inflammation in an in vitro model of Graves' orbitopathy (GO). METHODS: The level of miR-146a expression in orbital adipose tissue was compared between GO and non-GO by quantitative real-time PCR (qPCR). The effects of interleukin 1β (IL-1β) on miR-146a expression were analyzed in orbital fibroblasts by qPCR. To investigate the molecular mechanism underlying IL-1β-induced miR-146a expression, the effects of inhibitors of nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB), mitogen-activated protein kinase/extracellular signal-regulated kinases (MEK)-1/2, c-Jun N-terminal kinases (JNK)-1/2, p38 MAP kinase, and phosphatidylinositol-4,5-bisphosphate 3-kinase (PI3K) were analyzed...
August 1, 2016: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/27431205/a-single-nucleotide-polymorphism-in-hsa%C3%A2-mir%C3%A2-146a-is-responsible-for-the-development-of-bronchial-hyperresponsiveness-in-response-to-intubation-during-general-anesthesia
#15
Yong Luan, Dongjiang Li, Lulu Gao, Sha Xie, Ling Pei
Bronchial hyperresponsiveness (BHR) is the most common clinical manifestation identified in asthmatic patients, and intubation is the major factor that stimulates the airway of patients receiving general anesthetic. In the present study, nitric oxide synthase 1 (NOS1) was identified as a target gene of micro (mi)R‑146a using in silico analysis and luciferase assay. Furthermore, the regulatory role of miR‑146a was demonstrated by the observation that the NOS1 expression level in pulmonary artery smooth muscle cells (PASMCs) transfected with miR‑146a mimics was significantly downregulated and the NOS1 expression level in PASMCs transfected with miR‑146a inhibitors was significantly upregulated...
September 2016: Molecular Medicine Reports
https://www.readbyqxmd.com/read/27345902/direct-peritoneal-resuscitation-alters-hepatic-mirna-expression-after-hemorrhagic-shock
#16
Jessica L Weaver, Paul J Matheson, Ryan T Hurt, Cynthia D Downard, Craig J McClain, R Neal Garrison, Jason W Smith
BACKGROUND: MicroRNAs (miRNAs) are small segments of noncoding RNA that regulate gene expression and protein function, and therefore are key regulators of cellular processes including those of the inflammatory cascade after hemorrhagic shock (HS). We have previously shown that direct peritoneal resuscitation (DPR), as an adjunct to traditional IV fluid resuscitation, improves visceral blood flow and reduces pro-inflammatory cytokines released during HS. The effects of DPR on hepatic miRNA (miR) expression patterns after resuscitated HS are not known...
July 2016: Journal of the American College of Surgeons
https://www.readbyqxmd.com/read/27225664/cucurbitacin-e-potently-modulates-the-activity-of-encephalitogenic-cells
#17
Bojan Jevtić, Neda Djedović, Suzana Stanisavljević, Jovana Despotović, Djordje Miljković, Gordana Timotijević
Cucurbitacin E (CucE) is a highly oxidized steroid consisting of a tetracyclic triterpene. It is a member of a Cucurbitacin family of biomolecules that are predominantly found in Cucurbitaceae plants. CucE has already been identified as a potent anti-inflammatory compound. Here, its effects on CD4(+) T helper (Th) cells and macrophages, as the major encephalitogenic cells in the autoimmunity of the central nervous system, were investigated. Production of major pathogenic Th cell cytokines: interferon-gamma and interleukin-17 were inhibited under the influence of CucE...
June 22, 2016: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/27212168/the-functional-analysis-of-micrornas-involved-in-nf-%C3%AE%C2%BAb-signaling
#18
Y Yang, J-K Wang
Nuclear factor kB (NF-kB) is a transcriptional factor that regulates a large number of genes that controls diverse biological functions, ranging from inflammation, cell proliferation and tumor development to learning and memory. MicroRNAs (miRNAs) are small non-coding RNA molecules involved in most aspects of physiological and pathological processes, including cancer, viral infections, inflammation and autoimmune diseases. miRNAs also play an important role in the regulation of NF-kB signaling pathway, some being inhibitory and others activating...
May 2016: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/27102525/altered-microrna-expression-and-pre-mrna-splicing-events-reveal-new-mechanisms-associated-with-early-stage-mycobacterium-avium-subspecies-paratuberculosis-infection
#19
Guanxiang Liang, Nilusha Malmuthuge, Yongjuan Guan, Yuwei Ren, Philip J Griebel, Le Luo Guan
The molecular regulatory mechanisms of host responses to Mycobacterium avium subsp. paratuberculosis (MAP) infection during the early subclinical stage are still not clear. In this study, surgically isolated ileal segments in newborn calves (n = 5) were used to establish in vivo MAP infection adjacent to an uninfected control intestinal compartment. RNA-Seq was used to profile the whole transcriptome (mRNAs) and the microRNAome (miRNAs) of ileal tissues collected at one-month post-infection. The most related function of the differentially expressed mRNAs between infected and uninfected tissues was "proliferation of endothelial cells", indicating that MAP infection may lead to the over-proliferation of endothelial cells...
2016: Scientific Reports
https://www.readbyqxmd.com/read/27011326/family-of-microrna-146-regulates-rar%C3%AE-in-papillary-thyroid-carcinoma
#20
Agnieszka Anna Czajka, Anna Wójcicka, Anna Kubiak, Marta Kotlarek, Elwira Bakuła-Zalewska, Łukasz Koperski, Wiesław Wiechno, Krystian Jażdżewski
Retinoic acid is a promising tool in adjuvant cancer therapies, including refractory thyroid cancer, and its biological role is mediated by the retinoic acid receptor beta (RARβ). However, expression of RARβ is lowered in papillary thyroid carcinoma (PTC), contributing to promotion of tumor growth and inefficiency of retinoic acid and radioactive iodine treatment. The causes of aberrant RARB expression are largely unknown. We hypothesized that the culpable mechanisms include the action of microRNAs from the miR-146 family, previously identified as significantly upregulated in PTC tumors...
2016: PloS One
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