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https://www.readbyqxmd.com/read/28428217/microrna-33-regulates-macrophage-autophagy-in-atherosclerosis
#1
Mireille Ouimet, Hasini Ediriweera, Milessa Silva Afonso, Bhama Ramkhelawon, Ragunath Singaravelu, Xianghai Liao, Rachel C Bandler, Karishma Rahman, Edward A Fisher, Katey J Rayner, John P Pezacki, Ira Tabas, Kathryn J Moore
OBJECTIVE: Defective autophagy in macrophages leads to pathological processes that contribute to atherosclerosis, including impaired cholesterol metabolism and defective efferocytosis. Autophagy promotes the degradation of cytoplasmic components in lysosomes and plays a key role in the catabolism of stored lipids to maintain cellular homeostasis. microRNA-33 (miR-33) is a post-transcriptional regulator of genes involved in cholesterol homeostasis, yet the complete mechanisms by which miR-33 controls lipid metabolism are unknown...
April 20, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28422941/metabolism-related-micrornas-in-maternal-breast-milk-are-influenced-by-premature-delivery
#2
Molly C Carney, Andrij Tarasiuk, Susan L DiAngelo, Patricia Silveyra, Abigail Podany, Leann L Birch, Ian M Paul, Shannon Kelleher, Steven D Hicks
BACKGROUND: Maternal breast milk (MBM) is enriched in microRNAs, factors that regulate protein translation throughout the human body. MBM from mothers of term and preterm infants differ in nutrient, hormone, and bioactive-factor composition, but the microRNA differences between these groups have not been compared. We hypothesized that gestational age at delivery influences microRNA in MBM, particularly microRNAs involved in immunologic and metabolic regulation. METHODS: MBM from mothers of premature infants (pMBM) obtained 3-4 weeks post-delivery was compared with MBM from mothers of term infants obtained at birth (tColostrum) and 3-4 weeks post-delivery (tMBM)...
April 19, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28412904/the-role-of-exosomes-and-exosome-derived-micrornas-in-atherosclerosis
#3
Xinjie Lu
BACKGROUND: Atherosclerosis is the leading cause of death and morbidity throughout industrialized nations, accounting for one-fifth of all deaths globally. Exosomes are bi-lipid membranous vesicles containing protein, lipid and nucleic acid contents that are released from cells via the endolysosomal pathway. Exosomes are derived from several cells including macrophages, dendritic cells, platelets as well as human serum. METHODS: In this review, an overview of recent advances and the evidence for the role exosomes and exosome-derived microRNAs (miRNAs) in atherosclerosis are provided...
April 13, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28412359/potentiation-of-docetaxel-sensitivity-by-mir-638-via-regulation-of-stard10-pathway-in-human-breast-cancer-cells
#4
Ge Zhao, Ying Li, Ting Wang
Acquired resistance to classical chemotherapeutics such as docetaxel (DTX) remains a critical challenge in breast cancer (BCa) treatment. Epigenetic modification by microRNAs (miRNAs) has been shown to play a crucial role in cancer drug resistance. Previous study, using human drug-resistant BCa tissues, has identified miR-638 as one of the most down-regulated miRNAs, but its exact roles and underlying mechanisms during the pathogenesis of chemoresistance remain to be determined. In the current study, we found that miR-638 expression was significantly down-regulated in clinical DTX-resistant BCa tissues compared to that in DTX-sensitive BCa tissues...
April 12, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28404597/altered-mirna-29-expression-in-type-2-diabetes-influences-glucose-and-lipid-metabolism-in-skeletal-muscle
#5
Julie Massart, Rasmus J O Sjögren, Leonidas S Lundell, Jonathan M Mudry, Niclas Franck, Donal J O'Gorman, Brendan Egan, Juleen R Zierath, Anna Krook
MicroRNAs have emerged as important regulators of glucose and lipid metabolism in several tissues, however, their role in skeletal muscle remains poorly characterized. We determined the effects of the miR-29 family on glucose and lipid metabolism, and insulin responsiveness in skeletal muscle. We provide evidence that miR-29a and miR-29c are increased in skeletal muscle from type 2 diabetic patients and decreased following endurance training in healthy young men and in rats. In primary human skeletal muscle cells, inhibition and overexpression strategies demonstrate that miR-29a and miR-29c regulate glucose uptake and insulin-stimulated glucose metabolism...
April 12, 2017: Diabetes
https://www.readbyqxmd.com/read/28403518/formation-of-the-igf1r-cav1-src-tri-complex-antagonizes-trail-induced-apoptosis-in-gastric-cancer-cells
#6
Tianshu Guo, Ling Xu, Xiaofang Che, Simeng Zhang, Ce Li, Jin Wang, Jing Gong, Rui Ma, Yibo Fan, Kezuo Hou, Huiming Zhou, Xuejun Hu, Yunpeng Liu, Xiujuan Qu
Lipid rafts provide a biological platform for apoptosis induced by tumor necrosis factor-related apoptosis-inducing ligand (TRAIL). We previously reported that insulin-like growth factor 1 receptor (IGF1R) translocation into lipid rafts helped to explain TRAIL resistance. However, it was not clear whether TRAIL resistance was caused by the interaction of IGF1R with caveolin-1 (CAV1) and the non-receptor tyrosine kinase SRC in lipid rafts of gastric cancer cells. Here, we observed high IGF1R expression in TRAIL-resistant gastric cancer cells, and showed that IGF1R combined with both CAV1 and SRC in a native complex...
April 12, 2017: Cell Biology International
https://www.readbyqxmd.com/read/28397233/-analysis-of-association-of-genetic-polymorphisms-of-micrornas-with-ischemic-stroke
#7
Haogang Zhu, Hongjin Zhang, Ligang Bao, Meifen Dai
OBJECTIVE: To assess the association of single nucleotide polymorphisms of hsa-miR-196a2, hsa-miR-149, hsa-miR-146a, hsa-miR-499 with susceptibility to ischemic stroke. METHODS: Taqman-PCR and DNA sequencing assays were employed to determine the genotypes of the 4 loci among 510 patients and 523 controls. And their association with the disease was assessed. RESULTS: Analysis showed that smoking, diabetes, hypertension, BMI index and abnormal serum lipid metabolism were significantly associated with ischemic stroke, and that rs2910164 was significantly associated with the disease in codominant (CG vs...
April 10, 2017: Zhonghua Yi Xue Yi Chuan Xue za Zhi, Zhonghua Yixue Yichuanxue Zazhi, Chinese Journal of Medical Genetics
https://www.readbyqxmd.com/read/28388926/proof-of-concept-study-profile-of-circulating-micrornas-in-bovine-serum-harvested-during-acute-and-persistent-fmdv-infection
#8
Carolina Stenfeldt, Jonathan Arzt, George Smoliga, Michael LaRocco, Joseph Gutkoska, Paul Lawrence
BACKGROUND: Changes in the levels of circulating microRNAs (miRNAs) in the serum of humans and animals have been detected as a result of infection with a variety of viruses. However, to date, such a miRNA profiling study has not been conducted for foot-and-mouth disease virus (FMDV) infection. METHODS: The relative abundance of 169 miRNAs was measured in bovine serum collected at three different phases of FMDV infection in a proof-of-concept study using miRNA PCR array plates...
April 7, 2017: Virology Journal
https://www.readbyqxmd.com/read/28386478/changes-in-the-microrna-profile-observed-in-the-subcutaneous-adipose-tissue-of-obese-patients-after-laparoscopic-adjustable-gastric-banding
#9
Carmela Nardelli, Laura Iaffaldano, Vincenzo Pilone, Giuseppe Labruna, Maddalena Ferrigno, Nicola Carlomagno, Concetta Anna Dodaro, Pietro Forestieri, Pasqualina Buono, Francesco Salvatore, Lucia Sacchetti
Background. Laparoscopic adjustable gastric banding (LAGB) results in significant lasting weight loss and improved metabolism in obese patients. To evaluate whether epigenetic factors could concur to these benefits, we investigated the subcutaneous adipose tissue (SAT) microRNA (miRNA) profile before (T0) and three years (T1) after LAGB in three morbidly obese women. Case Reports. SAT miRNA profiling, evaluated by TaqMan Array, showed four downexpressed (miR-519d, miR-299-5p, miR-212, and miR-671-3p) and two upexpressed (miR-370 and miR-487a) miRNAs at T1 versus T0...
2017: Journal of Obesity
https://www.readbyqxmd.com/read/28381526/mirna-132-induces-hepatic-steatosis-and-hyperlipidaemia-by-synergistic-multitarget-suppression
#10
Geula Hanin, Nadav Yayon, Yonat Tzur, Rotem Haviv, Estelle R Bennett, Shiran Udi, Yoganathan R Krishnamoorthy, Eleni Kotsiliti, Rivka Zangen, Ben Efron, Joseph Tam, Orit Pappo, Eyal Shteyer, Eli Pikarsky, Mathias Heikenwalder, David S Greenberg, Hermona Soreq
OBJECTIVE: Both non-alcoholic fatty liver disease (NAFLD) and the multitarget complexity of microRNA (miR) suppression have recently raised much interest, but the in vivo impact and context-dependence of hepatic miR-target interactions are incompletely understood. Assessing the relative in vivo contributions of specific targets to miR-mediated phenotypes is pivotal for investigating metabolic processes. DESIGN: We quantified fatty liver parameters and the levels of miR-132 and its targets in novel transgenic mice overexpressing miR-132, in liver tissues from patients with NAFLD, and in diverse mouse models of hepatic steatosis...
April 5, 2017: Gut
https://www.readbyqxmd.com/read/28379398/arabidopsis-dolichol-kinase-atdok1-is-involved-in-flowering-time-control
#11
Yueh Cho, Chao-Yuan Yu, Yuki Nakamura, Kazue Kanehara
Dolichols are a class of isoprenoids that consist of highly polymerized and unsaturated long-chain isoprenes. They play crucial roles in protein glycosylation including N-glycosylation, because the oligosaccharide is assembled on a lipid carrier, dolichyl diphosphate. Arabidopsis DOLICHOL KINASE 1, AtDOK1 (At3g45040), encodes a functional dolichol kinase that is involved in plant reproductive processes. The expression of AtDOK1 is limited to highly pluripotent cells although protein glycosylation is thought to be required ubiquitously in the entire plant body...
April 3, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28377111/genome-wide-identification-of-micrornas-involved-in-fatty-acid-and-lipid-metabolism-of-brassica-napus-by-small-rna-and-degradome-sequencing
#12
Zhiwei Wang, Yan Qiao, Jingjing Zhang, Wenhui Shi, Jinwen Zhang
Rapeseed (Brassica napus) is an important cash crop considered as the third largest oil crop worldwide. Rapeseed oil contains various saturation or unsaturation fatty acids, these fatty acids, whose could incorporation with TAG form into lipids stored in seeds play various roles in the metabolic activity. The different fatty acids in B. napus seeds determine oil quality, define if the oil is edible or must be used as industrial material. miRNAs are kind of non-coding sRNAs that could regulate gene expressions through post-transcriptional modification to their target transcripts playing important roles in plant metabolic activities...
April 1, 2017: Gene
https://www.readbyqxmd.com/read/28364255/microrna-184-is-a-downstream-effector-of-albuminuria-driving-renal-fibrosis-in-rats-with-diabetic-nephropathy
#13
Cristina Zanchi, Daniela Macconi, Piera Trionfini, Susanna Tomasoni, Daniela Rottoli, Monica Locatelli, Michael Rudnicki, Jo Vandesompele, Pieter Mestdagh, Giuseppe Remuzzi, Ariela Benigni, Carlamaria Zoja
AIMS/HYPOTHESIS: Renal fibrosis is a common complication of diabetic nephropathy and is a major cause of end-stage renal disease. Despite the suggested link between renal fibrosis and microRNA (miRNA) dysregulation in diabetic nephropathy, the identification of the specific miRNAs involved is still incomplete. The aim of this study was to investigate miRNA profiles in the diabetic kidney and to identify potential downstream targets implicated in renal fibrosis. METHODS: miRNA expression profiling was investigated in the kidneys of 8-month-old Zucker diabetic fatty (ZDF) rats during overt nephropathy...
March 31, 2017: Diabetologia
https://www.readbyqxmd.com/read/28361080/future-directions-of-extracellular-vesicle-associated-mirnas-in-metastasis
#14
EDITORIAL
Jesús Adrián López, Angelica Judith Granados-López
Numerous studies have demonstrated the dynamic cell-to-cell communication mediated by extracellular vesicles (EV) in cancer cell survival and metastasis development. EV content includes proteins, lipids, DNA, and RNA like microRNAs. Non-protein coding microRNAs play a very active role in almost all cellular processes targeting mRNAs for silencing. Different miRNA profiles have been found in different cancer types, and clarification of miRNAs packed in EV from different types of cancers will allow the understanding of metastasis and the application of miRNAs as biomolecules in diagnostic, prognostic and therapeutic approaches to fight cancer...
March 2017: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28348559/mir-31-links-lipid-metabolism-and-cell-apoptosis-in-bacteria-challenged-apostichopus-japonicus-via-targeting-ctrp9
#15
Yina Shao, Chenghua Li, Wei Xu, Pengjuan Zhang, Weiwei Zhang, Xuelin Zhao
The biological functions of microRNAs (miRNAs) have been studied in a number of eukaryotic species. Recent studies on vertebrate animals have demonstrated critical roles of miRNA in immune and metabolic activities. However, studies on the functions of miRNA in invertebrates are very limited. Here, we demonstrated that miR-31 from Apostichopus japonicus disrupts the balance of lipid metabolism, thus resulting in cell apoptosis by targeting complement C1q tumor necrosis factor-related protein 9 (AjCTRP9), a novel adipokine with pleiotropic functions in immunity and metabolism...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28345303/arterial-ageing-from-endothelial-dysfunction-to-vascular-calcification
#16
M Tesauro, A Mauriello, V Rovella, M Annicchiarico-Petruzzelli, C Cardillo, G Melino, N Di Daniele
Complex structural and functional changes occur in the arterial system with advancing age. The aged artery is characterized by changes in microRNA expression patterns, autophagy, smooth muscle cell migration and proliferation, and arterial calcification with progressively increased mechanical vessel rigidity and stiffness. With age the vascular smooth muscle cells modify their phenotype from contractile to 'synthetic' determining the development of intimal thickening as early as the second decade of life as an adaptive response to forces acting on the arterial wall...
May 2017: Journal of Internal Medicine
https://www.readbyqxmd.com/read/28336556/human-microrna-548p-decreases-hepatic-apolipoprotein-b-secretion-and-lipid-synthesis
#17
Liye Zhou, M Mahmood Hussain
OBJECTIVE: MicroRNAs (miRs) play important regulatory roles in lipid metabolism. Apolipoprotein B (ApoB), as the only essential scaffolding protein in the assembly of very-low-density lipoproteins, is a target to treat hyperlipidemia and atherosclerosis. We aimed to find out miRs that reduce apoB expression. APPROACH AND RESULTS: Bioinformatic analyses predicted that hsa-miR-548p can interact with apoB mRNA. MiR-548p or control miR was transfected in human and mouse liver cells to test its role in regulating apoB secretion and mRNA expression levels...
March 23, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28335259/lipid-nanovectors-to-deliver-rna-oligonucleotides-in-cancer
#18
REVIEW
Virginia Campani, Giuseppina Salzano, Sara Lusa, Giuseppe De Rosa
The growing knowledge on the mechanisms of gene silencing and gene regulation by non-coding RNAs (ncRNA), mainly small interfering RNA (siRNA) and microRNA (miRNA), is providing a significant boost to the development of new therapeutic strategies for the treatment of cancer. However, the design of RNA-based therapeutics is hampered by biopharmaceutical issues, thus requiring the use of suitable delivery strategies. In this regards, lipid nanovectors have been successfully investigated to deliver RNA in different forms of cancer...
July 9, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28333713/micrornas-and-lipid-metabolism
#19
Binod Aryal, Abhishek K Singh, Noemi Rotllan, Nathan Price, Carlos Fernández-Hernando
PURPOSE OF REVIEW: Work over the past decade has identified the important role of microRNAs (miRNAS) in regulating lipoprotein metabolism and associated disorders including metabolic syndrome, obesity, and atherosclerosis. This review summarizes the most recent findings in the field, highlighting the contribution of miRNAs in controlling LDL-cholesterol (LDL-C) and HDL-cholesterol (HDL-C) metabolism. RECENT FINDINGS: A number of miRNAs have emerged as important regulators of lipid metabolism, including miR-122 and miR-33...
March 22, 2017: Current Opinion in Lipidology
https://www.readbyqxmd.com/read/28331816/inhibition-of-fat-cell-differentiation-in-3t3-l1-pre-adipocytes-by-all-trans-retinoic-acid-integrative-analysis-of-transcriptomic-and-phenotypic-data
#20
Katharina Stoecker, Steffen Sass, Fabian J Theis, Hans Hauner, Michael W Pfaffl
The process of adipogenesis is controlled in a highly orchestrated manner, including transcriptional and post-transcriptional events. In developing 3T3-L1 pre-adipocytes, this program can be interrupted by all-trans retinoic acid (ATRA). To examine this inhibiting impact by ATRA, we generated large-scale transcriptomic data on the microRNA and mRNA level. Non-coding RNAs such as microRNAs represent a field in RNA turnover, which is very important for understanding the regulation of mRNA gene expression. High throughput mRNA and microRNA expression profiling was performed using mRNA hybridisation microarray technology and multiplexed expression assay for microRNA quantification...
March 2017: Biomolecular Detection and Quantification
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