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https://www.readbyqxmd.com/read/29775762/aortic-vascular-calcification-is-inversely-associated-with-the-trabecular-bone-score-in-patients-receiving-dialysis
#1
Jasna Aleksova, Samantha Kurniawan, Mirna Vucak-Dzumhur, Peter Kerr, Peter R Ebeling, Frances Milat, Grahame J Elder
INTRODUCTION: Progressive chronic kidney disease (CKD) confers a marked increase in risk for vascular calcification, cardiovascular disease, fracture and mortality, with likely contributing factors including dysregulated bone metabolism and mineral homeostasis. In general population studies, increased vascular calcification is directly related to mortality and inversely related to bone mineral density (BMD) measured by dual-energy X-ray absorptiometry (DXA). In patients with CKD, abnormalities in turnover, mineralization and bone volume, reduce the ability of DXA to predict fracture...
May 15, 2018: Bone
https://www.readbyqxmd.com/read/29771409/mir-299-5p-targets-cell-cycle-to-promote-cell-proliferation-and-progression-of-osteosarcoma
#2
C-L Zhang, L-B Li, C She, Y Xie, D-W Ge, Q-R Dong
OBJECTIVE: Osteosarcoma is a common primary bone tumor with high mortality. MicroRNA (miRNA, miR) is a small RNA with 20-25 nucleotides, which could regulate diverse biological processes by targeting 3'-UTR of gene to degrade it. MiR-299-5p has been reported to participate in the progression of many diseases, but the role in osteosarcoma is still uncertain. The aim of this work was to investigate the expression of miR-299-5p in osteosarcoma and its clinical significance. MATERIALS AND METHODS: The datasets of osteosarcoma miRNA was searched in Gene Expression Omnibus (GEO) datasets, including GSE65071, GSE39040, and GSE39055...
May 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29771408/microrna-16-suppressed-the-invasion-and-migration-of-osteosarcoma-by-directly-inhibiting-rab23
#3
Z-H Jiao, J-D Wang, X-J Wang
OBJECTIVE:   Osteosarcoma is the most frequent primary bone malignancy that affects young adults and adolescents around the world. Increasing evidence suggests that dysfunctions of microRNAs (miRNAs) used to play an important role in human cancers. We aimed at evaluating the potential function of miR-16 and verify its influence on the function of RAB23 in osteosarcoma. PATIENTS AND METHODS: miR-16 expressions in osteosarcoma tissues and cell lines were examined using quantitative reverse transcriptase-polymerase chain reaction (qRT-PCR)...
May 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29770701/mk2-mediates-macrophage-activation-and-acute-lung-injury-by-regulating-let-7e-mirna
#4
Yaxian Wu, Huiqiong He, Yunhe Ding, Sirui Liu, Depeng Zhang, Jun Wang, Hongchao Jiang, Dan Zhang, Lei Sun, Richard D Ye, Feng Qian
MAPK-activated protein kinase 2 (MK2) plays a critical role in the development of inflammation. However, the modulatory mechanisms in macrophage activation and acute lung injury (ALI) haven't been completely defined. Here, we reported that MK2 deficient mice (MK2-/-) protected against sepsis-induced ALI. In response to lipopolysaccharide (LPS) challenge, MK2-/- mice and myeloid cell-specific MK2 conditional knockout mice (MK2Lyz2-KO) exhibited attenuated inflammatory response, especially producing fewer amounts of tumor necrosis factor-α (TNF-α), interleukin (IL)-6, and macrophage inflammatory protein 2 (MIP-2)...
May 17, 2018: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/29760712/the-function-of-micrornas-in-b-cell-development-lymphoma-and-their-potential-in-clinical-practice
#5
REVIEW
Bing Zheng, Zhijiang Xi, Rong Liu, Wei Yin, Zhiwei Sui, Boxu Ren, Heather Miller, Quan Gong, Chaohong Liu
B-cell formation, development, and differentiation are complex processes regulated by several mechanisms. Recently, there has been growing evidence indicating that microRNAs (miRNAs) are important for normal B-cell lineage development. miRNAs are small non-coding RNA molecules, about 20-22 nucleotide in length, that play an important role in regulating gene expression. They pair with specific messenger RNAs (mRNAs), resulting in mRNAs translational repression or degradation. Here, we review current research about the function of miRNAs in the aspects of B-cell physiology and pathology...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29749614/microrna-signature-of-central-nervous-system-infiltrating-dendritic-cells-in-an-animal-model-of-multiple-sclerosis
#6
Mariah L Hoye, Angela S Archambault, Taylor M Gordon, Landon K Oetjen, Matthew D Cain, Robyn S Klein, Seth D Crosby, Brian S Kim, Timothy M Miller, Gregory F Wu
Innate immune cells are integral to the pathogenesis of several diseases of the central nervous system (CNS), including multiple sclerosis (MS). Dendritic cells (DCs) are potent CD11c+ antigen-presenting cells that are critical regulators of adaptive immune responses, particularly in autoimmune diseases such as MS. The regulation of DC function in both the periphery and CNS compartment has not been fully elucidated. One limitation to studying the role of CD11c+ DCs in the CNS is that microglia can upregulate CD11c during inflammation, making it challenging to distinguish bone marrow-derived DCs (BMDCs) from microglia...
May 10, 2018: Immunology
https://www.readbyqxmd.com/read/29746867/mir-26a-5p-potentiates-metastasis-of-human-lung-cancer-cells-by-regulating-itg%C3%AE-8-jak2-stat3-axis
#7
Qianqian Song, Boning Liu, Xueqin Li, Qicheng Zhang, Limin Cao, Meilin Xu, Zhaowei Meng, Xiang Wu, Ke Xu
Most lung cancer patients die of metastasis. Recent studies have indicated that dysregulated microRNAs (miRNAs) are involved not only in tumorigenesis, but also in metastasis. In the present study, we found that over-expression of miR-26a-5p potentiated the migration and invasion of lung cancer cells evidenced by wound healing assay and transwell assay, and metastasis-related genes MMP-9 and CD44 were up-regulated. We identified integrin-beta8 (ITGβ8) as a novel target of miR-26a, and ITGβ8 expression was negatively correlated with miR-26a-5p expression in lung cancer specimens...
May 7, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29745807/epigenetic-remodeling-and-modification-to-preserve-skeletogenesis-in-vivo
#8
Tanner C Godfrey, Benjamin J Wildman, Amjad Javed, Christopher J Lengner, Mohammad Quamarul Hassan
Current studies offer little insight on how epigenetic remodeling of bone-specific chromatin maintains bone mass in vivo. Understanding this gap and precise mechanism is pivotal for future therapeutic innovation to prevent bone loss. Recently, we found that low bone mass is associated with decreased H3K27 acetylation (activating histone modification) of bone specific gene promoters. Here, we aim to elucidate the epigenetic mechanisms by which a miRNA cluster controls bone synthesis and homeostasis by regulating chromatin accessibility and H3K27 acetylation...
December 2018: Connective Tissue Research
https://www.readbyqxmd.com/read/29741283/long-noncoding-rna-malat1-promotes-osterix-expression-to-regulate-osteogenic-differentiation-by-targeting-mirna-143-in-human-bone-marrow-derived-mesenchymal-stem-cells
#9
Yuan Gao, Fei Xiao, Chenglong Wang, Chuandong Wang, Penglei Cui, Xiaoling Zhang, Xiaodong Chen
Osteogenic differentiation of human bone marrow-derived mesenchymal stem cells (hBMSCs) is essential for the human bone formation, and emerging evidence shows that long non-coding RNAs (lncRNAs) play important roles in hBMSC osteogenic differentiation. MALAT1 is often regarded as a tumor-related lncRNA, but its function in mesenchymal stem cell differentiation remains to be defined. In this study, we aimed to investigate whether MALAT1 regulates Osterix (Osx) expression by sponging miR-143 to promote hBMSC osteogenic differentiation...
May 9, 2018: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29731868/microrna-192-5p-suppresses-the-initiation-and-progression-of-osteosarcoma-by-targeting-usp1
#10
Sheng Zhou, Min Xiong, Guo Dai, Ling Yu, Zhengpei Zhang, Jie Chen, Weichun Guo
Osteosarcoma is the most frequent primary malignant bone tumor. An increasing body of evidence has suggested that microRNAs (miRNA/miRs) have emerged as critical regulators in the initiation and progression of osteosarcoma. The present study explored the biological function of miR-192-5p and ubiquitin-specific protease 1 (USP1), and investigated whether miR-192-5p could directly interact with USP1 in osteosarcoma. The results revealed that miR-192-5p was significantly downregulated in osteosarcoma tissues and cell lines, while a reverse expression profile of USP1 was observed...
May 2018: Oncology Letters
https://www.readbyqxmd.com/read/29731841/the-potential-function-of-micrornas-as-biomarkers-and-therapeutic-targets-in-multiple-myeloma
#11
REVIEW
Bingying Zhu, Shaoqing Ju, Haidan Chu, Xianjuan Shen, Yan Zhang, Xi Luo, Hui Cong
Multiple myeloma (MM), accounting for ~1% of all types of human cancer and 13% of all hematological malignancies, is characterized by the malignant proliferation of monoclonal plasma cells (PCs) in the bone marrow. MM leads to end stage organ impairment, including bone lesions, renal dysfunction, hypercalcemia and anemia. So far, the specific pathogenesis of MM remains unclear and no early-stage sensitive biomarker of MM has been well characterized. Furthermore, treating MM is difficult, as the majority of patients eventually relapse or become refractory following treatment using presently available methods...
May 2018: Oncology Letters
https://www.readbyqxmd.com/read/29730429/lung-adenocarcinoma-cell-derived-exosomal-mir-21-facilitates-osteoclastogenesis
#12
Zhen Xu, Xingwang Liu, Huisheng Wang, Jutao Li, Lei Dai, Jun Li, Caijun Dong
Osteoclastogenesis is the rate-limiting step in tumor osteolytic metastasis. MicroRNAs play crucial roles in tumor progression and osteoclastogenesis regulation. Recent studies have demonstrated that exosomes are able to function as messengers that deliver microRNAs between cells. However, the effects of lung adenocarcinoma cell-derived exosomal miRNAs in osteoclastogenesis remain poorly understood. In this study, we found that exosomes derived from A549 cells facilitate osteoclastogenesis. As miR-21 was involved in tumorigenesis and osteoclastogenesis, we further proved the existence of miR-21 in A549 cell-derived exosomes and investigated its function...
May 3, 2018: Gene
https://www.readbyqxmd.com/read/29721180/mirna-expression-profile-of-bone-marrow-resident-cells-from-children-with-neuroblastoma-is-not-significantly-different-from-that-of-healthy-children
#13
Sara Stigliani, Fabio Morandi, Luca Persico, Corrado Lagazio, Giovanni Erminio, Paola Scaruffi, Maria Valeria Corrias
The miRNA expression profiles of bone marrow resident cells from children with neuroblastoma were compared to that of healthy children. No significant difference was found between localized and metastatic neuroblastoma, or between children with neuroblastoma and healthy children. By considering the fold change we identified six miRNAs over-expressed by more than 150 fold in neuroblastoma. Validation confirmed miR-221 over-expression in BM resident cells from children with neuroblastoma, regardless of localized or metastatic disease...
April 10, 2018: Oncotarget
https://www.readbyqxmd.com/read/29719588/effects-of-repeated-sprints-training-on-fracture-risk-associated-mirna
#14
Veronica Sansoni, Silvia Perego, Gianluca Vernillo, Andrea Barbuti, Giampiero Merati, Antonio La Torre, Giuseppe Banfi, Giovanni Lombardi
Repeated-sprint training (RS, short-duration sprints at supramaximal intensities interspersed with brief recoveries) is a time-saving metabolically effective strategy whose effects on bone are unknown. Bone metabolism is a finely regulated process profoundly affected by exercise as assayable by studying specific systemic (e.g., hormones, cytokines) and bone-derived molecules (e.g., bone markers, miRNAs). Aim of this study was to determine the effect of a 8-week repeated-sprint on circulating levels of fracture risk-associated miRNA...
April 6, 2018: Oncotarget
https://www.readbyqxmd.com/read/29715263/downregulation-of-mir-199b-5p-inducing-differentiation-of-bone-marrow-mesenchymal-stem-cells-bmscs-toward-cardiomyocyte-like-cells-via-hsf1-hsp70-pathway
#15
Fangjie Dai, Peizhao Du, Yaowei Chang, Endong Ji, Yunjia Xu, Chunyan Wei, Jiming Li
BACKGROUND Bone-marrow mesenchymal stem cells (BMSCs) are pluripotent stem cells with potent self-renewal and differentiation ability that are widely used in transplantation of cell therapy. But the mechanism on microRNA (miRNA) regulating stem cell differentiation is complicated and unclear. The aim of this study was to investigate whether miR-199b-5p is involved in differentiation of cardiomyocyte-like cells and identify potential signal pathways in BMSCs. MATERIAL AND METHODS Mouse BMSCs were treated with 5-azacytidine and transfected by miR-199b-5p mimic and inhibitor, respectively...
May 1, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29713056/immunosuppressive-effects-of-hypoxia-induced-glioma-exosomes-through-myeloid-derived-suppressor-cells-via-the-mir-10a-rora-and-mir-21-pten-pathways
#16
Xiaofan Guo, Wei Qiu, Qinglin Liu, Mingyu Qian, Shaobo Wang, Zongpu Zhang, Xiao Gao, Zihang Chen, Hao Xue, Gang Li
While immunosuppressive environments mediated by myeloid-derived suppressor cells (MDSCs) have been well documented in glioma patients, the mechanisms of MDSC development and activation have not been clearly defined. Here, we elucidated a role for glioma-derived exosomes (GDEs) in potentiating an MDSC pathway. We isolated normoxia-stimulated and hypoxia-stimulated GDEs and studied their MDSC induction abilities in vivo and in vitro. Analyses of spleen and bone marrow MDSC proportions (flow cytometry) and reactive oxygen species (ROS), arginase activity, nitric oxide (NO), T-cell proliferation and immunosuppressive cytokine (IL-10 and TGF-β, ELISA) levels were used to assess MDSC expansion and functional capacity...
May 1, 2018: Oncogene
https://www.readbyqxmd.com/read/29710674/norcantharidin-modulates-the-mir-30a-metadherin-akt-signaling-axis-to-suppress-proliferation-and-metastasis-of-stromal-tumor-cells-in-giant-cell-tumor-of-bone
#17
Feiyan Chen, Siqun Wang, Yibing Wei, Jianguo Wu, Gangyong Huang, Jie Chen, Jingsheng Shi, Jun Xia
Giant cell tumor of bone (GCTB) is a benign but locally aggressive tumor, which can cause significant bone destruction at the epiphysis of long bones. Recent studies have demonstrated that norcantharidin (NCTD) can inhibit the proliferation and migration of various human cancer cells, but the role of NCTD in GCTB has not previously been evaluated. The aim of this study was to explore the nature of the anti-cancer effects of NCTD in GCTB and to elucidate the biomolecular mechanisms responsible for these effects...
April 26, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29710460/mir-25-promotes-proliferation-differentiation-and-migration-of-osteoblasts-by-up-regulating-rac1-expression
#18
Xuefu Li, Jingbo Ji, Wei Wei, Lei Liu
According to many studies, miRNAs are involved in the control of bone cell differentiation and function. Hence, an understanding of the pathways regulated by miRNAs involved in skeletal function is essential for the development of miRNA-based therapeutic strategies for bone diseases. In this study we evaluated the role of miR-25 in osteoblast differentiation by examining the expressions of key osteoblast differentiation markers like Runx2 and Ocn and also evaluated the effects of miR-25-Rac1 axis on PI3K/AKT and JNK pathways...
March 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29709471/mm9_circ_009056-enhances-osteogenesis-by-targeting-bmp7-via-cgrp-mediated-mir-22-3p
#19
Caijuan Wu, Zhichao Zheng, Wen Ren, Tian Deng, Yuanjing Li, Lan Yang, Jingwen Wu, Zhu Huang, Zhengmao Li, Lvhua Guo
Circular RNAs (circRNAs) are noncoding RNAs that can function as miRNA sponges, post-transcriptionally regulating the expression of genes. Here, we report a novel positive function of mm9_circ_009056 during osteogenesis in regulating bone morphogenetic protein 7 (BMP7) through miR-22-3p. First, we found that calcitonin gene-related peptide (CGRP) had great osteogenesis function on MC3T3 cells. Then aberrant expression of mm9_circ_009056 were confirmed in CGRP-induced cells. Furthermore, the expression of mm9_circ_009056 was up-regulated in the CGRP-induced cells, whereas miR-22-3p was obviously decreased...
April 27, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29704238/microrna-3064-3p-regulates-the-differentiation-of-cementoblasts-through-targeting-dkk1
#20
C Wang, H Liao, H Sun, Y Zhang, Z Cao
BACKGROUND AND OBJECTIVE: MicroRNAs (miRNAs) are short, noncoding RNAs that interfere with translation of target mRNAs and thereby play a pivotal role in a variety of biological processes. Cementoblasts are the cells that build up cementum. They share a similar gene expression pattern with osteoblasts. Recent studies have suggested that miRNAs are able to control osteoblast-mediated bone formation. However, the effects of miRNA on cementoblast differentiation still remain unsolved. Herein, we wanted to elucidate the role of miR-3064-3p in cementoblast differentiation...
April 27, 2018: Journal of Periodontal Research
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