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https://www.readbyqxmd.com/read/28327409/mir-23a-5p-modulates-mycobacterial-survival-and-autophagy-during-mycobacterium-tuberculosis-infection-through-tlr2-myd88-nf-%C3%AE%C2%BAb-pathway-by-targeting-tlr2
#1
Xing Gu, Yan Gao, De-Guang Mu, En-Qing Fu
Autophagy plays a pivotal role in activating the antimicrobial host defense against Mycobacterium tuberculosis (M.tb.). The emerging roles of microRNAs (miRNAs) in regulating immune responses have attracted increasing attention in recent years. Appreciating the potential of host-directed therapies designed to control autophagy during mycobacterial infection, we focused on the influence of miR-23a-5p on the activation of macrophage autophagy during M.tb. infection in bone marrow-derived macrophages (BMDMs) and murine RAW264...
March 18, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28322342/therapy-targeted-to-the-metastatic-niche-is-effective-in-a-model-of-stage-iv-breast-cancer
#2
Byunghee Yoo, Amol Kavishwar, Ping Wang, Alana Ross, Pamela Pantazopoulos, Michael Dudley, Anna Moore, Zdravka Medarova
Treatment of stage IV metastatic breast cancer patients is limited to palliative options and represents an unmet clinical need. Here, we demonstrate that pharmacological inhibition of miRNA-10b - a master regulator of metastatic cell viability - leads to elimination of distant metastases in a mouse model of metastatic breast cancer. This was achieved using the miRNA-10b inhibitory nanodrug, MN-anti-miR10b, which consists of magnetic nanoparticles, conjugated to LNA-based miR-10b antagomirs. Intravenous injection of MN-anti-miR10b into mice bearing lung, bone, and brain metastases from breast cancer resulted in selective accumulation of the nanodrug in metastatic tumor cells...
March 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28321122/the-emerging-roles-of-tumor-derived-exosomes-in-hematological-malignancies
#3
REVIEW
M Boyiadzis, T L Whiteside
Exosomes are small (30-150 nm) membranous vesicles of endocytic origin produced by all cells under physiological and pathological conditions. They have recently emerged as vehicles for intercellular transfer of molecular and genetic contents from parent to recipient cells. Exosome-mediated transfer of proteins or genes (RNA, miRNA, DNA) results in reprogramming of recipient cell functions. Exosomes carry and deliver information that is essential for health, and they participate in pathological events, including malignant transformation...
March 21, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28319142/microrna-32-promotes-calcification-in-vascular-smooth-muscle-cells-implications-as-a-novel-marker-for-coronary-artery-calcification
#4
Jianghua Liu, Xinhua Xiao, Yingying Shen, Ling Chen, Canxin Xu, Heng Zhao, Ying Wu, Qinghai Zhang, Jing Zhong, Zhenwang Tang, Changhui Liu, Qiang Zhao, Yi Zheng, Renxian Cao, Xuyu Zu
Cardiovascular calcification is one of the most severe outcomes associated with cardiovascular disease and often results in significant morbidity and mortality. Previous reports indicated that epigenomic regulation of microRNAs (miRNAs) might play important roles in vascular smooth muscle cell (VSMC) calcification. Here, we identified potential key miRNAs involved in vascular calcification in vivo and investigated the role of miR-32-5p (miR-32). According to microarray analysis, we observed increased expression of miR-125b, miR-30a, and miR-32 and decreased expression of miR-29a, miR-210, and miR-320 during the progression of vascularcalcification...
2017: PloS One
https://www.readbyqxmd.com/read/28317323/a-functional-snp-regulated-by-mir-196a-3p-in-the-3-utr-of-fgf2-is-associated-with-bone-mineral-density-in-the-chinese-population
#5
Dong-Li Zhu, Yan Guo, Yan Zhang, Shan-Shan Dong, Wen Xu, Ruo-Han Hao, Xiao-Feng Chen, Han Yan, Shui-Yun Yang, Tie-Lin Yang
Previous studies have identified FGF2 as a susceptibility gene for osteoporosis in Caucasians. Evaluating the genetic associations in different ethnicities is necessary. Moreover, elucidating the functional mechanism for the susceptibility loci is important to offer new targets for therapeutic studies. Here, we genotyped ten SNPs in FGF2 and tested for associations with bone mineral density (BMD) in a discovery sample of 1300 Chinese subjects. Nominally significant results were subjected to replication in another sample of 1039 Chinese subjects...
March 19, 2017: Human Mutation
https://www.readbyqxmd.com/read/28302134/microrna-142-regulates-inflammation-and-t-cell-differentiation-in-an-animal-model-of-multiple-sclerosis
#6
Farideh Talebi, Samira Ghorbani, Wing Fuk Chan, Roobina Boghozian, Farimah Masoumi, Sedigheh Ghasemi, Mohammed Vojgani, Christopher Power, Farshid Noorbakhsh
BACKGROUND: MicroRNAs have emerged as an important class of modulators of gene expression. These molecules influence protein synthesis through translational repression or degradation of mRNA transcripts. Herein, we investigated the potential role of miR-142a isoforms, miR-142a-3p and miR-142a-5p, in the context of autoimmune neuroinflammation. METHODS: The expression levels of two mature isoforms of miR-142 were measured in the brains of patients with multiple sclerosis (MS) and the CNS tissues from mice with experimental autoimmune encephalomyelitis (EAE), an animal model of MS...
March 16, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28296555/the-screening-of-a-microrna-expression-during-development-of-human-macrophages-and-mouse-dendritic-cells
#7
Eui Young So, Trisha Winchester, Toru Ouchi
There is increasing evidence showing specific roles of microRNA in cell differentiation and cancer progression. Here we examine miRNA profiles during maturation of monocytes and bone marrow-derived dendritic cells (BMDCs) in human and mouse, respectively. We have identified significant changes of various miRNA expression during monocyte and BMDC monocyte development via miRNA microarrays, confirmed by quantitative PCR. Increases in miR155 expression positively correlated with increasing maturity of monocyte and BMDC in both mouse and human microarrays, indicating its importance in development...
March 15, 2017: Cancer Biology & Therapy
https://www.readbyqxmd.com/read/28290608/regulation-of-runx2-by-microrna-9-and-microrna-10-modulates-the-osteogenic-differentiation-of-mesenchymal-stem-cells
#8
Hong Luo, Hualin Gao, Fang Liu, Bing Qiu
Currently, the use of stem cell transplantation for the treatment of osteoporosis is a popular research topic. In general, promotion of the osteogenic differentiation of stem cells is the goal of researchers. MicroRNAs (miRNAs of miRs) are critical regulatory factors of osteogenic induction, and miR‑9 and miR‑10 have been substantiated to be involved in the osteogenic process, yet the underlying mechanisms remain unclear. The present study investigated the role of miR‑9 and miR‑10 in the osteogenic differentiation of bone marrow-derived mesenchymal stem cells (BMSCs) and aimed to elucidate the mechanism of osteogenic differentiation...
March 10, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28271491/role-of-skeletal-muscle-in-ear-development
#9
REVIEW
Irena Rot, Mark Baguma-Nibasheka, Willard J Costain, Paul Hong, Robert Tafra, Snjezana Mardesic-Brakus, Natasa Mrduljas-Djujic, Mirna Saraga-Babic, Boris Kablar
The current paper is a continuation of our work described in Rot and Kablar, 2010. Here, we show lists of 10 up- and 87 down-regulated genes obtained by a cDNA microarray analysis that compared developing Myf5-/-:Myod-/- (and Mrf4-/-) petrous part of the temporal bone, containing middle and inner ear, to the control, at embryonic day 18.5. Myf5-/-:Myod-/- fetuses entirely lack skeletal myoblasts and muscles. They are unable to move their head, which interferes with the perception of angular acceleration. Previously, we showed that the inner ear areas most affected in Myf5-/-:Myod-/- fetuses were the vestibular cristae ampullaris, sensitive to angular acceleration...
March 8, 2017: Histology and Histopathology
https://www.readbyqxmd.com/read/28268169/role-of-runx2-in-breast-cancer-mediated-bone-metastasis
#10
REVIEW
M Vishal, R Swetha, G Thejaswini, B Arumugam, N Selvamurugan
Breast cancer is one of the most prevalent forms of cancer in women. The currently available treatment for breast cancer is mostly curative except when it becomes metastatic. One of the major sites for metastasis of breast cancer is the bone. Homing of the circulating tumor cells is tightly regulated including a number of factors present in the cells and their microenvironment. Runx2, a transcription factor plays an important role in osteogenesis and breast cancer mediated bone metastases. One of the recent advances in molecular therapy includes the discovery of the small, non-coding microRNAs (miRNAs) and they target specific genes to reduce their expression at the post-transcriptional level...
March 6, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28265470/combination-of-interleukin-27-and-microrna-for-enhancing-expression-of-anti-inflammatory-and-proosteogenic-genes
#11
Manoel Figueiredo Neto, Marxa L Figueiredo
Remission of inflammation has become an achievable goal in inflammatory or rheumatoid arthritis (RA); however, bone erosion continues in many patients. Interleukin- (IL-) 27 regulates immune and bone cell balance and also suppresses activities of several inflammatory cell types in RA. Despite its promise, challenges to clinical translation of IL-27 have been its partial effects in vivo. Due to their ability to modulate plasticity of bone and immune cell differentiation, we examined the potential for several microRNA (miR) candidates in enhancing the effects of IL-27...
2017: Arthritis
https://www.readbyqxmd.com/read/28262816/effect-of-age-on-pro-inflammatory-mirnas-contained-in-mesenchymal-stem-cell-derived-extracellular-vesicles
#12
J Fafián-Labora, I Lesende-Rodriguez, P Fernández-Pernas, S Sangiao-Alvarellos, L Monserrat, O J Arntz, F J Van de Loo, J Mateos, M C Arufe
Stem cells possess significant age-dependent differences in their immune-response profile. These differences were analysed by Next-Generation Sequencing of six age groups from bone marrow mesenchymal stem cells. A total of 9,628 genes presenting differential expression between age groups were grouped into metabolic pathways. We focused our research on young, pre-pubertal and adult groups, which presented the highest amount of differentially expressed genes related to inflammation mediated by chemokine and cytokine signalling pathways compared with the newborn group, which was used as a control...
March 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28261104/circulating-micrornas-correlated-with-bone-loss-induced-by-45-days-of-bed-rest
#13
Shukuan Ling, Guohui Zhong, Weijia Sun, Fengji Liang, Feng Wu, Hongxing Li, Yuheng Li, Dingsheng Zhao, Jinping Song, Xiaoyan Jin, Xiaorui Wu, Hailin Song, Qi Li, Yinghui Li, Shanguang Chen, Jianghui Xiong, Yingxian Li
The purpose of this study was to find the circulating microRNAs (miRNAs) co-related with bone loss induced by bed rest, and testify whether the selected miRNAs could reflect the bone mineral status of human after bed-rest. We analyzed plasma miRNA levels of 16 subjects after 45 days of -6° head-down tilt bed rest, which is a reliable model for the simulation of microgravity. We characterize the circulating miRNA profile in individuals after bed rest and identify circulating miRNAs which can best reflect the level of bone loss induced by bed rest...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28260111/molecular-characterization-of-metastatic-osteosarcoma-differentially-expressed-genes-transcription-factors-and-micrornas
#14
Lisong Heng, Zhen Jia, Jie Bai, Kun Zhang, Yangjun Zhu, Jianbing Ma, Jun Zhang, Honghao Duan
The present study aimed to understand the molecular mechanisms underlying osteosarcoma metastasis. Microarray dataset GSE49003 was downloaded from the Gene Expression Omnibus database and used for analysis. Raw expression data were preprocessed using the preprocessCore, impute and aggregate packages in R. Differentially expressed genes (DEGs) between metastatic and non‑metastatic osteosarcoma cell lines were screened using the limma package following exclusion of DEGs with a higher significance in intra‑groups compared with inter‑groups using the genefilter package...
March 3, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28260060/bioinformatics-analysis-on-the-differentiation-of-bone-mesenchymal-stem-cells-into-osteoblasts-and-adipocytes
#15
Xiaoyuan Xu, He Jiang, Xingnuan Li, Ping Wu, Jianyun Liu, Tao Wang, Xiaoou Zhou, Jianjun Xiong, Weidong Li
The present study aimed to screen several differentially expressed genes (DEGs) and differentially expressed microRNAs (miRNAs) for two types of mesenchymal stem cell (MSC) differentiation. Bone morphogenetic protein 6 (BMP‑6) and dexamethasone were used to induce MSCs towards osteoblastic differentiation or adipocytic differentiation. The t‑test in the Bioconductor bioinformatics software tool was used to screen DEGs and differentially expressed miRNAs in the two samples. Subsequent gene ontology (GO) and pathway analyses on the DEGs were performed using the GO and Kyoto Encyclopedia of Genes and Genomes databases, respectively; potential target genes for the screened miRNAs were predicted using the TargetScan database...
February 8, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28260003/estrogen-stimulates-osteoprotegerin-expression-via-the-suppression-of-mir-145-expression-in-mg-63-cells
#16
Jun Jia, Hengxing Zhou, Xiantie Zeng, Shiqing Feng
Osteoprotegerin (OPG) is implicated in the pathogenesis of postmenopausal osteoporosis, and other metabolic bone diseases caused by estrogen deficiency. Previous studies have demonstrated that estrogen may stimulate OPG expression in osteoblast cells at the transcriptional level; however, whether estrogen can regulate OPG expression at a post-transcriptional level remains elusive. The present study aimed to investigate the role of microRNA (miRNA) in estrogen‑mediated OPG production in human osteoblast‑like MG‑63 cells...
February 6, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28249921/mir-20b-induced-increase-in-myeloid-derived-suppressor-cells-in-the-lungs-of-mice-with-chronic-asthma
#17
Hua Ma, Helong Wang, Yulan Luo, Shujun Guo, Chuanwang Song
Bronchial asthma is a common chronic airway inflammatory disease. MicroRNAs (miRNAs) play an important role in the pathogenesis of asthma. We have previously shown that miR-20b can inhibit airway inflammation in asthmatic mice, but the exact mechanism is unknown. In the present study, we show that administration of nasal drops containing miR-20b induced an increase in the percentage of Gr1(+)CD11b(+) myeloid-derived suppressor cells (MDSCs) in lung tissue from asthmatic mice, and the content of TGF-β in lung tissues also increased after treatment...
January 2017: Annals of Clinical and Laboratory Science
https://www.readbyqxmd.com/read/28245421/-role-of-exosomal-mirna-in-multiple-myeloma-progression-and-its-possible-mechanism-review
#18
Ya-Zhi Yang, Xiao-Yan Zhang, Qian Wan, Jian Li
Multiple myeloma (MM)is a kind of plasma tumor originated from B cell line. Its incidence ranks in second place of hematopoietic malignancies. Although continued progress was made in treatment of MM,the survival rate and prognosis of MM patients are still not satisfactory. Further understanding of the pathogenesis of MM may provide information to develop new treatment strategies, so as to improve survival rate and ameliorate its prognosis. Many researches have demonstrated that bone marrow microenvironment plays an important role in MM pathogenesis, which regulates the biological properties of MM cells, including migration and proliferation, through miRNA, mRNA and protein contained in the exosomes released from the cells in the tumor microenvironment...
February 2017: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/28244607/mir-483-targets-smad4-to-suppress-chondrogenic-differentiation-of-human-mesenchymal-stem-cells
#19
Britta A Anderson, Audrey McAlinden
MicroRNAs (miRNAs) can regulate cellular differentiation processes by modulating multiple pathways simultaneously. Previous studies to analyze in vivo miRNA expression patterns in developing human limb cartilage tissue identified significant downregulation of miR-483 in hypertrophic chondrocytes relative to proliferating and differentiated chondrocytes. To test the function of miR-483 during chondrogenesis, lentiviral strategies were used to overexpress miR-483 during in vitro chondrogenesis of human bone marrow-derived mesenchymal stem cells (hBM-MSCs)...
February 28, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28240539/intrinsic-ultrahigh-drug-mirna-loading-capacity-of-biodegradable-bioactive-glass-nanoparticles-toward-highly-efficient-pharmaceutical-delivery
#20
Meng Yu, Yumeng Xue, Peter X Ma, Cong Mao, Bo Lei
The lack of safe and efficient drug and gene delivery vectors has become a major obstacle for the clinical applications of drug and nonviral gene therapy. To date, for nonviral gene vectors, most studies are focused on cationic polymers, liposomes, and modified inorganic nanoparticles which have shown high cellular toxicity, low transfection efficiency, or nondegradation. Additionally, few biodegradable biomaterials demonstrate intrinsic high binding abilities to both drug and gene. Bioactive glasses (BGs) have achieved successful applications in bone regeneration due to their high biocompatibility and biodegradation...
March 3, 2017: ACS Applied Materials & Interfaces
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