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exosome microRNA

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https://www.readbyqxmd.com/read/28816640/exosomal-microrna-communication-between-tissues-during-organogenesis
#1
Toru Hayashi, Matthew P Hoffman
Epithelial-mesenchymal interactions are required to coordinate cell proliferation, patterning, and functional differentiation of multiple cell types in a developing organ. This exquisite coordination is dependent on various secreted molecules that provide developmental signals to mediate these tissue interactions. Recently, it was reported that mature mesenchymal-derived microRNAs (miRNAs) in the fetal mouse salivary gland are loaded into exosomes, and transported to the epithelium where they influence progenitor cell proliferation...
August 17, 2017: RNA Biology
https://www.readbyqxmd.com/read/28804599/circulating-exosome-microrna-associated-with-heart-failure-secondary-to-myxomatous-mitral-valve-disease-in-a-naturally-occurring-canine-model
#2
Vicky K Yang, Kerry A Loughran, Dawn M Meola, Christine M Juhr, Kristen E Thane, Airiel M Davis, Andrew M Hoffman
Myxomatous mitral valve disease (MMVD) is functionally and histologically identical to mitral valve prolapse (MVP) in humans. Currently, there are no medical treatments that can delay the progression of this valvular disease or associated cardiac remodelling. Therefore, there is a need to understand the molecular pathology associated with MMVD and MVP better, and thus identify potential therapeutic targets. Circulating exosomes contain small RNA, including miRNA, which reflect cell physiology and pathology...
2017: Journal of Extracellular Vesicles
https://www.readbyqxmd.com/read/28798470/identification-of-the-novel-3-utr-sequences-of-human-il-21-mrna-as-potential-targets-of-mirnas
#3
Yutaka Enomoto, Rie Takagi, Yutaka Naito, Tsuyoshi Kiniwa, Yasuhito Tanaka, Susumu Hamada-Tsutsumi, Masaaki Kawano, Sho Matsushita, Takahiro Ochiya, Atsushi Miyajima
Hepatitis B virus (HBV) infection is a leading cause of hepatocellular carcinoma worldwide. However, the strategy of HBV to escape from the host immune system remains largely unknown. In this study, we examined extracellular vesicles (EVs) secreted from human hepatocytes infected with HBV. EVs includeing exosomes are nano-size vesicles with proteins, mRNAs, and microRNAs (miRNAs), which can be transmitted to different cells. We found that 104 EV associated miRNAs were increased in hepatocytes more than 2-fold by HBV infection...
August 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28795526/coupling-factors-and-exosomal-packaging-micrornas-involved-in-the-regulation-of-bone-remodelling
#4
Sipin Zhu, Felix Yao, Heng Qiu, Ge Zhang, Huazi Xu, Jiake Xu
Bone remodelling is a continuous process by which bone resorption by osteoclasts is followed by bone formation by osteoblasts to maintain skeletal homeostasis. These two forces must be tightly coordinated not only quantitatively, but also in time and space, and its malfunction leads to diseases such as osteoporosis. Recent research focusing on the cross-talk and coupling mechanisms associated with the sequential recruitment of osteoblasts to areas where osteoclasts have removed bone matrix have identified a number of osteogenic factors produced by the osteoclasts themselves...
August 10, 2017: Biological Reviews of the Cambridge Philosophical Society
https://www.readbyqxmd.com/read/28793919/prevention-of-diabetes-in-overweight-obese-children-through-a-family-based-intervention-program-including-supervised-exercise-predikid-project-study-protocol-for-a-randomized-controlled-trial
#5
Lide Arenaza, María Medrano, María Amasene, Beatriz Rodríguez-Vigil, Ignacio Díez, Manuel Graña, Ignacio Tobalina, Edurne Maiz, Edurne Arteche, Eider Larrarte, Inge Huybrechts, Catherine L Davis, Jonatan R Ruiz, Francisco B Ortega, Javier Margareto, Idoia Labayen
BACKGROUND: The global pandemic of obesity has led to an increased risk for prediabetes and type-2 diabetes (T2D). The aims of the current project are: (1) to evaluate the effect of a 22-week family based intervention program, including supervised exercise, on insulin resistance syndrome (IRS) risk in children with a high risk of developing T2D and (2) to identify the profile of microRNA in circulating exosomes and in peripheral blood mononuclear cells in children with a high risk of developing T2D and its response to a multidisciplinary intervention program including exercise...
August 10, 2017: Trials
https://www.readbyqxmd.com/read/28789823/serum-exosomal-protein-profiling-for-the-non-invasive-detection-of-cardiac-allograft-rejection
#6
Peter J Kennel, Amit Saha, Dawn A Maldonado, Raymond Givens, Danielle L Brunjes, Estibaliz Castillero, Xiaokan Zhang, Ruiping Ji, Alexandre Yahi, Isaac George, Donna M Mancini, Antonius Koller, Barry Fine, Emmanuel Zorn, Paolo C Colombo, Nicholas Tatonetti, Emily I Chen, P Christian Schulze
BACKGROUND: Exosomes are cell-derived circulating vesicles that play an important role in cell-cell communication. Exosomes are actively assembled and carry messenger RNAs, microRNAs and proteins. The "gold standard" for cardiac allograft surveillance is endomyocardial biopsy (EMB), an invasive technique with a distinct complication profile. The development of novel, non-invasive methods for the early diagnosis of allograft rejection is warranted. We hypothesized that the exosomal proteome is altered in acute rejection, allowing for a distinction between non-rejection and rejection episodes...
July 19, 2017: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/28783104/exosomes-and-other-extracellular-vesicles-in-hpv-transmission-and-carcinogenesis
#7
REVIEW
David Guenat, François Hermetet, Jean-Luc Prétet, Christiane Mougin
Extracellular vesicles (EVs), including exosomes (Exos), microvesicles (MVs) and apoptotic bodies (ABs) are released in biofluids by virtually all living cells. Tumor-derived Exos and MVs are garnering increasing attention because of their ability to participate in cellular communication or transfer of bioactive molecules (mRNAs, microRNAs, DNA and proteins) between neighboring cancerous or normal cells, and to contribute to human cancer progression. Malignant traits can also be transferred from apoptotic cancer cells to phagocytizing cells, either professional or non-professional...
August 7, 2017: Viruses
https://www.readbyqxmd.com/read/28774835/current-and-emerging-biomarkers-in-tumors-of-the-central-nervous-system-possible-diagnostic-prognostic-and-therapeutic-applications
#8
REVIEW
Ishaq N Khan, Najeeb Ullah, Deema Hussein, Kulvinder S Saini
Recent investments in research associated with the discovery of specific tumor biomarkers important for efficient diagnosis and prognosis of the patients are beginning to bear fruit. Key biomarkers could potentially outweigh traditional radiological or pathological methods by enabling specificity of early detection, when coupled with tumor molecular profiling and clinical associations. Only few biomarkers are approved by regulatory authorities for Central Nervous System Tumors (CNSTs), despite the evaluation of a large number of CNST related markers during clinical trials...
July 31, 2017: Seminars in Cancer Biology
https://www.readbyqxmd.com/read/28770113/potential-roles-of-exosomal-micrornas-as-diagnostic-biomarkers-and-therapeutic-application-in-alzheimer-s-disease
#9
REVIEW
Jian-Jiao Chen, Bin Zhao, Jie Zhao, Shao Li
Exosomes are bilipid layer-enclosed vesicles derived from endosomes and are released from neural cells. They contain a diversity of proteins, mRNAs, and microRNAs (miRNAs) that are delivered to neighboring cells and/or are transported to distant sites. miRNAs released from exosomes appear to be associated with multiple neurodegenerative conditions linking to Alzheimer's disease (AD) which is marked by hyperphosphorylated tau proteins and accumulation of Aβ plaques. Exciting findings reveal that miRNAs released from exosomes modulate the expression and function of amyloid precursor proteins (APP) and tau proteins...
2017: Neural Plasticity
https://www.readbyqxmd.com/read/28766848/microrna-30a-ameliorates-hepatic-fibrosis-by-inhibiting-beclin1-mediated-autophagy
#10
Jianliang Chen, Yue Yu, Shu Li, Yuting Liu, Shu Zhou, Shouji Cao, Jie Yin, Guoqiang Li
We explored the role of microRNA-30a (miR-30a) and the mechanism involved in hepatic fibrosis. MiR-30a overexpression was achieved by miR-30a mimics transfection in hepatic stellate cells (HSCs) (HSC-T6, LX-2), and miR-30a agomir (ago-miR-30a) treatment in mice. MiR-30a levels were measured using TaqMan miRNA assay system, and the localization of miR-30a was detected by fluorescence in situ hybridization (FISH). The interaction of miR-30a and Beclin1 was confirmed by dual-luciferase reporter assay. Autophagic flux was analysed using tandem mRFP-GFP-LC3 fluorescence microscopy, electron microscopy and Western blot of LC3-II/I ratio...
August 1, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28757556/expression-of-serum-exosomal-and-esophageal-microrna-in-rat-reflux-esophagitis
#11
Risa Uemura, Yoshiki Murakami, Atsushi Hashimoto, Akinari Sawada, Koji Otani, Koichi Taira, Shuhei Hosomi, Yasuaki Nagami, Fumio Tanaka, Noriko Kamata, Hirokazu Yamagami, Tetsuya Tanigawa, Toshio Watanabe, Y-H Taguchi, Yasuhiro Fujiwara
Gastroesophageal reflux disease (GERD) is a common upper gastrointestinal disease. However, the role of exosomal microRNAs (miRNAs) and esophageal miRNAs in GERD has not been studied. A rat model of acid reflux esophagitis was used to establish a novel diagnosis marker for GERD and examine dynamics of miRNA expression in GERD. Rats were sacrificed 3 (acute phase), 7 (sub-acute phase) and 21 days (chronic phase) after induction of esophagitis. Exosomes were extracted from serum, and the expression patterns of serum miRNAs were analyzed...
July 25, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28753793/micrornas-in-serum-exosomes-as-potential-biomarkers-in-clear-cell-renal-cell-carcinoma
#12
Wei Zhang, Maowei Ni, Ying Su, Hua Wang, Shaoxin Zhu, An Zhao, Guorong Li
BACKGROUND: Circulating microRNAs (miRNAs) in exosomes are emerging as clinically useful tools for cancer detection. However, little is known about their diagnostic impact in clear-cell renal cell carcinoma (ccRCC). OBJECTIVE: To investigate whether miRNAs in serum exosomes can serve as biomarkers in ccRCC. DESIGN, SETTING, AND PARTICIPANTS: Serum samples were obtained from 82 patients with ccRCC and 80 healthy volunteers. Exosomes were extracted and purified to selectively capture exosomes positive for tumor-associated epithelial cell adhesion molecule (EpCAM) via a magnetic bead technique...
October 14, 2016: European Urology Focus
https://www.readbyqxmd.com/read/28753577/diagnostic-potential-of-serum-exosomal-colorectal-neoplasia-differentially-expressed-long-non-coding-rna-crnde-p-and-microrna-217-expression-in-colorectal-carcinoma
#13
Bo Yu, Qiong Du, Huan Li, Hong-Yue Liu, Xuan Ye, Bin Zhu, Qing Zhai, Xin-Xiang Li
In this study, we investigated the diagnostic potential of serum exosomal colorectal neoplasia differentially expressed (CRNDE-p) long coding RNA and microRNA-217 in colorectal carcinoma (CRC). We detected high CRNDE-p and low miR-217 levels in exosomes released by multiple CRC cell lines into culture media as well as in sera from CRC xenograft mice and CRC patients. Conversely, we observed lower CRNDE-p and higher miR-217 levels in serum exosomes from post-chemotherapy than from pre-chemotherapy patient samples...
July 20, 2017: Oncotarget
https://www.readbyqxmd.com/read/28751864/exosomes-a-rising-star-in-falling-hearts
#14
REVIEW
Jun-Yan Xu, Gui-Hao Chen, Yue-Jin Yang
Although exosomes were previously recognized as a mechanism for discharging useless cellular components, growing evidence has elucidated their roles in conveying information between cells. They contribute to cell-cell communication by carrying nucleic acids, proteins and lipids that can, in turn, regulate behavior of the target cells. Recent research suggested that exosomes extensively participate in progression of diverse cardiovascular diseases (CVDs), such as myocardial infarction, cardiomyopathy, pulmonary arterial hypertension and others...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28750499/exosomal-mir-9-3p-suppresses-hbgf-5-expression-and-is-a-functional-biomarker-in-hepatocellular-carcinoma
#15
Jie Tang, Yun Li, Kai Liu, Qian Zhu, Wei-Hua Yang, Liang-Kun Xiong, De-Liang Guo
BACKGROUND: Hepatocellular carcinoma (HCC) is the fifth most common cancer and the third leading cause of cancer-related death worldwide. Exosomes are secreted membrane vesicles that play important roles in various diseases by transporting proteins and RNAs, including microRNAs, between cells. However, the function of exosomal miRNA in HCC has not been fully investigated. METHODS: Exosomes were obtained from the sera by ultracentrifugation and were processed for transmission electron microscopy (TEM)...
July 27, 2017: Minerva Medica
https://www.readbyqxmd.com/read/28748501/a-step-by-step-microrna-guide-to-cancer-development-and-metastasis
#16
REVIEW
Georgios S Markopoulos, Eugenia Roupakia, Maria Tokamani, Evangelia Chavdoula, Maria Hatziapostolou, Christos Polytarchou, Kenneth B Marcu, Athanasios G Papavassiliou, Raphael Sandaltzopoulos, Evangelos Kolettas
BACKGROUND: Cancer is one of the leading causes of mortality. The neoplastic transformation of normal cells to cancer cells is caused by a progressive accumulation of genetic and epigenetic alterations in oncogenes, tumor suppressor genes and epigenetic regulators, providing cells with new properties, collectively known as the hallmarks of cancer. During the process of neoplastic transformation cells progressively acquire novel characteristics such as unlimited growth potential, increased motility and the ability to migrate and invade adjacent tissues, the ability to spread from the tumor of origin to distant sites, and increased resistance to various types of stresses, mostly attributed to the activation of genetic stress-response programs...
August 2017: Cellular Oncology (Dordrecht)
https://www.readbyqxmd.com/read/28748478/urine-exosome-isolation-and-characterization
#17
Jonathan M Street, Erik H Koritzinsky, Deonna M Glispie, Peter S T Yuen
Exosomes are nanometer-scale, membrane-enclosed vesicles that can potentially be used to detect nephrotoxicity, and reveal the subsequent response of the kidney. Epithelial cells of every nephron segment can contribute to the urinary exosome population, which is rich in potential biomarkers, including membrane proteins such as transporters and receptors, transcription factors, and microRNAs. These exosomal biomarkers may be up- or downregulated upon nephrotoxicant exposure. Exosome isolation is an area of ongoing research...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28748475/next-generation-sequencing-to-investigate-urinary-micrornas-from-macaca-fascicularis-cynomolgus-monkey
#18
Yaligara Veeranagouda, Jean-François Léonard, Jean-Charles Gautier, Eric Boitier
Advanced sequencing technologies like next-generation sequencing (NGS) not only detect microRNAs (miRNAs) in biological samples but also facilitate de novo identification of miRNAs. Using an Ion Torrent's Ion Proton System, here we described miRNAs sequencing of urine samples collected from Macaca fascicularis (Cynomolgus monkey) to investigate miRNAs as potential novel biomarkers of nephrotoxicity in this species. Urinary miRNA sequencing methodologies described here include (a) urinary exosomal RNA isolation, (b) sequencing library preparation, (c) sequencing template preparation, and (d) template library sequencing using Ion Proton System...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28746310/hypothalamic-stem-cells-control-ageing-speed-partly-through-exosomal-mirnas
#19
Yalin Zhang, Min Soo Kim, Baosen Jia, Jingqi Yan, Juan Pablo Zuniga-Hertz, Cheng Han, Dongsheng Cai
It has been proposed that the hypothalamus helps to control ageing, but the mechanisms responsible remain unclear. Here we develop several mouse models in which hypothalamic stem/progenitor cells that co-express Sox2 and Bmi1 are ablated, as we observed that ageing in mice started with a substantial loss of these hypothalamic cells. Each mouse model consistently displayed acceleration of ageing-like physiological changes or a shortened lifespan. Conversely, ageing retardation and lifespan extension were achieved in mid-aged mice that were locally implanted with healthy hypothalamic stem/progenitor cells that had been genetically engineered to survive in the ageing-related hypothalamic inflammatory microenvironment...
August 3, 2017: Nature
https://www.readbyqxmd.com/read/28743280/exosomes-derived-from-gemcitabine-resistant-cells-transfer-malignant-phenotypic-traits-via-delivery-of-mirna-222-3p
#20
Feng Wei, Chengyuan Ma, Tong Zhou, Xuechao Dong, Qinghua Luo, Li Geng, Lijuan Ding, Yandong Zhang, Li Zhang, Nan Li, Yang Li, Yan Liu
BACKGROUND: Although gemcitabine-based chemotherapy has been established as a core multimodal therapy for non-small cell lung cancer (NSCLC) treatment, its clinical efficacy remains limited by the development of acquired resistance following tumor metastasis and relapse. In this study, we investigated how gemcitabine-resistant (GR) cells contribute to the development of NSCLC tumor malignancy via exosome-mediated transfer of microRNAs. METHODS: We first studied the mechanism of exosome internalization via PKH-67 staining and an immunofluorescence assay, then confirmed our finding by transmission electron microscopy and western blot analysis...
July 25, 2017: Molecular Cancer
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