journal
MENU ▼
Read by QxMD icon Read
search

Journal of Extracellular Vesicles

journal
https://www.readbyqxmd.com/read/28959386/cerebrospinal-fluid-extracellular-vesicle-enrichment-for-protein-biomarker-discovery-in-neurological-disease-multiple-sclerosis
#1
Joanne L Welton, Samantha Loveless, Timothy Stone, Chris von Ruhland, Neil P Robertson, Aled Clayton
The discovery of disease biomarkers, along with the use of "liquid biopsies" as a minimally invasive source of biomarkers, continues to be of great interest. In inflammatory diseases of the central nervous system (CNS), cerebrospinal fluid (CSF) is the most obvious biofluid source. Extracellular vesicles (EVs) are also present in CSF and are thought to be potential "biomarker treasure chests". However, isolating these CSF-derived EVs remains challenging. This small-scale pilot study developed and tested a protocol to enrich for CSF-EVs, both in relapsing remitting multiple sclerosis (RRMS) CSF and controls...
2017: Journal of Extracellular Vesicles
https://www.readbyqxmd.com/read/28959385/dominant-immunosuppression-of-dendritic-cell-function-by-prostate-cancer-derived-exosomes
#2
Josephine Salimu, Jason Webber, Mark Gurney, Saly Al-Taei, Aled Clayton, Zsuzsanna Tabi
Exosomes are a distinct population of extracellular vesicles of endocytic origin with a protein repertoire similar to the parent cell. Although tumour-derived exosomes harbour immunosuppressive characteristics, they also carry tumour antigens and thus potentially contribute to immune activation. The aim of this study was to examine the impact of prostate cancer exosomes on tumour antigen cross-presentation. DU145 cells, transduced with shRNA to knockdown Rab27a (DU145(KD)) that inhibits exosome secretion, triggered significantly stronger tumour-antigen-specific T cell responses when loaded onto dendritic cells (DC) than control DU145 cells...
2017: Journal of Extracellular Vesicles
https://www.readbyqxmd.com/read/28819550/effects-of-storage-temperature-on-airway-exosome-integrity-for-diagnostic-and-functional-analyses
#3
Rosario Maroto, Yingxin Zhao, Mohammad Jamaluddin, Vsevolod L Popov, Hongwang Wang, Madumali Kalubowilage, Yueqing Zhang, Jonathan Luisi, Hong Sun, Christopher T Culbertson, Stefan H Bossmann, Massoud Motamedi, Allan R Brasier
Background: Extracellular vesicles contain biological molecules specified by cell-type of origin and modified by microenvironmental changes. To conduct reproducible studies on exosome content and function, storage conditions need to have minimal impact on airway exosome integrity. Aim: We compared surface properties and protein content of airway exosomes that had been freshly isolated vs. those that had been treated with cold storage or freezing. Methods: Mouse bronchoalveolar lavage fluid (BALF) exosomes purified by differential ultracentrifugation were analysed immediately or stored at +4°C or -80°C...
2017: Journal of Extracellular Vesicles
https://www.readbyqxmd.com/read/28819549/metastatic-state-of-parent-cells-influences-the-uptake-and-functionality-of-prostate-cancer-cell-derived-extracellular-vesicles
#4
Elisa Lázaro-Ibáñez, Maarit Neuvonen, Maarit Takatalo, Uma Thanigai Arasu, Cristian Capasso, Vincenzo Cerullo, Johng S Rhim, Kirsi Rilla, Marjo Yliperttula, Pia R-M Siljander
Extracellular vesicles (EVs), including microvesicles and exosomes, mediate intercellular signalling which has a profound role in cancer progression and in the development of metastasis. Internalisation of EVs can prompt functional changes in the recipient cells, the nature of which depends on the molecular composition and the cargo of the EVs. We hypothesised that the metastatic stage of cancerous parent cells would determine the uptake efficacy and the subsequent functional effects of the respective cancer cell-derived EVs...
2017: Journal of Extracellular Vesicles
https://www.readbyqxmd.com/read/28815003/glioblastoma-stem-like-cells-secrete-the-pro-angiogenic-vegf-a-factor-in-extracellular-vesicles
#5
Lucas Treps, Raul Perret, Sébastien Edmond, Damien Ricard, Julie Gavard
Glioblastoma multiforme (GBM) are mortifying brain tumours that contain a subpopulation of tumour cells with stem-like properties, termed glioblastoma stem-like cells (GSCs). GSCs largely contribute to tumour initiation, propagation and resistance to current anti-cancer therapies. GSCs are situated in perivascular niches, closely associated with brain microvascular endothelial cells, thereby involved in bidirectional molecular and cellular interactions. Moreover, extracellular vesicles are suspected to carry essential information that can adapt the microenvironment to the tumour's needs, including tumour-induced angiogenesis...
2017: Journal of Extracellular Vesicles
https://www.readbyqxmd.com/read/28815002/a-comprehensive-method-for-identification-of-suitable-reference-genes-in-extracellular-vesicles
#6
Kenneth Gouin, Kiel Peck, Travis Antes, Jennifer Leigh Johnson, Chang Li, Sharon Denise Vaturi, Ryan Middleton, Geoff de Couto, Ann-Sophie Walravens, Luis Rodriguez-Borlado, Rachel Ruckdeschel Smith, Linda Marbán, Eduardo Marbán, Ahmed Gamal-Eldin Ibrahim
Reverse transcription-quantitative polymerase chain reaction (RT-qPCR) is one of the most sensitive, economical and widely used methods for evaluating gene expression. However, the utility of this method continues to be undermined by a number of challenges including normalization using appropriate reference genes. The need to develop tailored and effective strategies is further underscored by the burgeoning field of extracellular vesicle (EV) biology. EVs contain unique signatures of small RNAs including microRNAs (miRs)...
2017: Journal of Extracellular Vesicles
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
#7
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/28804598/a-rigorous-method-to-enrich-for-exosomes-from-brain-tissue
#8
Laura J Vella, Benjamin J Scicluna, Lesley Cheng, Emma G Bawden, Colin L Masters, Ching-Seng Ang, Nicholas Willamson, Catriona McLean, Kevin J Barnham, Andrew F Hill
Extracellular vesicles, including exosomes, are released by all cells, including those of the nervous system. Capable of delivering lipid, protein and nucleic acids to both nearby and distal cells, exosomes have been hypothesized to play a role in progression of many diseases of the nervous system. To date, most analyses on the role of these vesicles in the healthy and diseased state have relied on studying vesicles from in vitro sources, such as conditioned cell culture media, or body fluids. Here we have taken a critical approach to the enrichment and characterization of exosomes from human frontal cortex...
2017: Journal of Extracellular Vesicles
https://www.readbyqxmd.com/read/28804597/size-and-concentration-analyses-of-extracellular-vesicles-by-nanoparticle-tracking-analysis-a-variation-study
#9
Beate Vestad, Alicia Llorente, Axl Neurauter, Santosh Phuyal, Bente Kierulf, Peter Kierulf, Tore Skotland, Kirsten Sandvig, Kari Bente F Haug, Reidun Øvstebø
Current methods for characterisation of extracellular vesicles (EVs) need further standardisation in order to obtain an acceptable level of data comparability. Size and concentration of EVs can be determined by nanoparticle tracking analysis (NTA). However, both the heterogeneity of EVs and the choice of instrument settings may cause an appreciable analytical variation. Intra-assay (within-day, n = 6) and inter-assay (day-to-day, n = 6) variations (coefficient of variation, % CV) of different preparations of EVs and artificial vesicles or beads were determined using two NanoSight NS500 instruments, located at different laboratories...
2017: Journal of Extracellular Vesicles
https://www.readbyqxmd.com/read/28804596/characterisation-of-tumour-derived-microvesicles-in-cancer-patients-blood-and-correlation-with-clinical-outcome
#10
Kerstin Menck, Annalen Bleckmann, Astrid Wachter, Bianca Hennies, Lena Ries, Matthias Schulz, Marko Balkenhol, Tobias Pukrop, Bawarjan Schatlo, Ulrike Rost, Dirk Wenzel, Florian Klemm, Claudia Binder
To evaluate whether tumour-derived microvesicles (T-MV), originating from the plasma membrane, represent suitable cancer biomarkers, we isolated MV from peripheral blood samples of cancer patients with locally advanced and/or metastatic solid tumours (n = 330, including 79 head & neck cancers, 74 lung cancers, 41 breast cancers, 28 colorectal cancers and 108 with other cancer forms) and controls (n = 103). Whole MV preparations were characterised using flow cytometry. While MV carrying the tumour-associated proteins MUC1, EGFR and EpCAM were found to be enhanced in a tumour-subtype-specific way in patients' blood, expression of the matrix metalloproteinase inducer EMMPRIN was increased independent of tumour type...
2017: Journal of Extracellular Vesicles
https://www.readbyqxmd.com/read/28800366/proceedings-of-the-isev-symposium-on-hiv-neuroaids-drug-abuse-evs
#11
Guoku Hu, Kenneth W Witwer, Vincent C Bond, Norman Haughey, Fatah Kashanchi, Lynn Pulliam, Shilpa Buch
Extracellular vesicles (EVs) are globular, membrane bound nanovesicles (30-100 nm range) that are shed both during normal cellular functioning and under pathological conditions by most cell types. In recent years, there has been significant interest in the study of these vesicles as conduits for the delivery of information between cells from both analogous and disparate tissues. Their ability to carry specialised cargo including signalling mediators, proteins, messenger RNA and miRNAs characterises these vesicles as primary facilitators of cell-to-cell communication and regulation...
2017: Journal of Extracellular Vesicles
https://www.readbyqxmd.com/read/28717426/extracellular-vesicles-released-following-heat-stress-induce-bystander-effect-in-unstressed-populations
#12
Findlay Bewicke-Copley, Laura Ann Mulcahy, Laura Ann Jacobs, Priya Samuel, Naveed Akbar, Ryan Charles Pink, David Raul Francisco Carter
Cells naïve to stress can display the effects of stress, such as DNA damage and apoptosis, when they are exposed to signals from stressed cells; this phenomenon is known as the bystander effect. We previously showed that bystander effect induced by ionising radiation are mediated by extracellular vesicles (EVs). Bystander effect can also be induced by other types of stress, including heat shock, but it is unclear whether EVs are involved. Here we show that EVs released from heat shocked cells are also able to induce bystander damage in unstressed populations...
2017: Journal of Extracellular Vesicles
https://www.readbyqxmd.com/read/28717425/high-throughput-nanoparticle-tracking-analysis-for-monitoring-outer-membrane-vesicle-production
#13
Matthias J H Gerritzen, Dirk E Martens, René H Wijffels, Michiel Stork
Outer membrane vesicles (OMVs) are spherical membrane nanoparticles released by Gram-negative bacteria. OMVs can be quantified in complex matrices by nanoparticle tracking analysis (NTA). NTA can be performed in static mode or with continuous sample flow that results in analysis of more particles in a smaller time-frame. Flow measurements must be performed manually despite the availability of a sample changer on the NanoSight system. Here we present a method for automated measurements in flow mode. OMV quantification in flow mode results in lower variance in particle quantification (coefficient of variation (CV) of 6%, CV static measurements of 14%)...
2017: Journal of Extracellular Vesicles
https://www.readbyqxmd.com/read/28717424/low-active-loading-of-cargo-into-engineered-extracellular-vesicles-results-in-inefficient-mirna-mimic-delivery
#14
Dhruvitkumar S Sutaria, Jinmai Jiang, Ola A Elgamal, Steven M Pomeroy, Mohamed Badawi, Xiaohua Zhu, Ryan Pavlovicz, Ana Clara P Azevedo-Pouly, Jeffrey Chalmers, Chenglong Li, Mitch A Phelps, Thomas D Schmittgen
Extracellular vesicles (EVs) hold great potential as novel systems for nucleic acid delivery due to their natural composition. Our goal was to load EVs with microRNA that are synthesized by the cells that produce the EVs. HEK293T cells were engineered to produce EVs expressing a lysosomal associated membrane, Lamp2a fusion protein. The gene encoding pre-miR-199a was inserted into an artificial intron of the Lamp2a fusion protein. The TAT peptide/HIV-1 transactivation response (TAR) RNA interacting peptide was exploited to enhance the EV loading of the pre-miR-199a containing a modified TAR RNA loop...
2017: Journal of Extracellular Vesicles
https://www.readbyqxmd.com/read/28717423/contribution-of-neuroblastoma-derived-exosomes-to-the-production-of-pro-tumorigenic-signals-by-bone-marrow-mesenchymal-stromal-cells
#15
Rie Nakata, Hiroyuki Shimada, G Esteban Fernandez, Rob Fanter, Muller Fabbri, Jemily Malvar, Pascale Zimmermann, Yves A DeClerck
The bone marrow (BM) niche is a microenvironment promoting survival, dormancy and therapeutic resistance in tumor cells. Central to this function are mesenchymal stromal cells (MSCs). Here, using neuroblastoma (NB) as a model, we demonstrate that NB cells release an extracellular vesicle (EVs) whose protein cargo is enriched in exosomal proteins but lacks cytokines and chemokines. Using three different purification methods, we then demonstrate that NB-derived exosomes were captured by MSCs and induced the production of pro-tumorigenic cytokines and chemokines, including interleukin-6 (IL-6), IL-8/CXCL8, vascular endothelial cell growth factor and monocyte-chemotactic protein-1, with exosomes prepared by size exclusion chromatography having the highest activity...
2017: Journal of Extracellular Vesicles
https://www.readbyqxmd.com/read/28717422/exosomes-purified-from-a-single-cell-type-have-diverse-morphology
#16
Davide Zabeo, Aleksander Cvjetkovic, Cecilia Lässer, Martin Schorb, Jan Lötvall, Johanna L Höög
Extracellular vesicles (EVs) are produced by all known organisms and are important for cell communication and physiology. Great morphological diversity has been described regarding EVs found in body fluids such as blood plasma, breast milk, and ejaculate. However, a detailed morphological analysis has never been performed on exosomes when purified from a single cell type. In this study we analysed and quantified, via multiple electron microscopy techniques, the morphology of exosomes purified from the human mast cell line HMC-1...
2017: Journal of Extracellular Vesicles
https://www.readbyqxmd.com/read/28717421/isolation-of-membrane-vesicles-from-prokaryotes-a-technical-and-biological-comparison-reveals-heterogeneity
#17
Priscila Dauros Singorenko, Vanessa Chang, Alana Whitcombe, Denis Simonov, Jiwon Hong, Anthony Phillips, Simon Swift, Cherie Blenkiron
Prokaryotes release membrane vesicles (MVs) with direct roles in disease pathogenesis. MVs are heterogeneous when isolated from bacterial cultures so Density Gradient Centrifugation (DGC) is valuable for separation of MV subgroups from contaminating material. Here we report the technical variability and natural biological heterogeneity seen between DGC preparations of MVs for Mycobacterium smegmatis and Escherichia coli and compare these DGC data with size exclusion chromatography (SEC) columns. Crude preparations of MVs, isolated from cultures by ultrafiltration and ultracentrifugation were separated by DGC with fractions manually collected as guided by visible bands...
2017: Journal of Extracellular Vesicles
https://www.readbyqxmd.com/read/28717420/comprehensive-toxicity-and-immunogenicity-studies-reveal-minimal-effects-in-mice-following-sustained-dosing-of-extracellular-vesicles-derived-from-hek293t-cells
#18
Xiaohua Zhu, Mohamed Badawi, Steven Pomeroy, Dhruvitkumar S Sutaria, Zhiliang Xie, Alice Baek, Jinmai Jiang, Ola A Elgamal, Xiaokui Mo, Krista La Perle, Jeffrey Chalmers, Thomas D Schmittgen, Mitch A Phelps
Extracellular vesicles (EVs) are under evaluation as therapeutics or as vehicles for drug delivery. Preclinical studies of EVs often use mice or other animal models to assess efficacy and disposition. However, as most EVs under evaluation are derived from human cells, they may elicit immune responses which may contribute to toxicities or enhanced EV clearance. Furthermore, EVs from different cell sources or EVs comprising various cargo may differ with respect to immunogenicity or toxicity. To assess EV-induced immune response and toxicity, we dosed C57BL/6 mice with EVs intravenously and intraperitoneally for 3 weeks...
2017: Journal of Extracellular Vesicles
https://www.readbyqxmd.com/read/28717419/platelet-extracellular-vesicles-induce-a-pro-inflammatory-smooth-muscle-cell-phenotype
#19
Tanja Vajen, Birke J Benedikter, Alexandra C A Heinzmann, Elena M Vasina, Yvonne Henskens, Martin Parsons, Patricia B Maguire, Frank R Stassen, Johan W M Heemskerk, Leon J Schurgers, Rory R Koenen
Extracellular vesicles (EVs) are mediators of cell communication during health and disease, and abundantly released by platelets upon activation or during ageing. Platelet EVs exert modulatory effects on immune and vascular cells. Platelet EVs may modulate the function of vascular smooth muscle cells (SMC). Platelet EVs were isolated from platelet-rich plasma and incubated with SMC in order to assess binding, proliferation, migration and pro-inflammatory phenotype of the cells. Platelet EVs firmly bound to resting SMC through the platelet integrin αIIbβ3, while binding also occurred in a CX3CL1-CX3CR1-dependent manner after cytokine stimulation...
2017: Journal of Extracellular Vesicles
https://www.readbyqxmd.com/read/28717418/a-novel-community-driven-software-for-functional-enrichment-analysis-of-extracellular-vesicles-data
#20
Mohashin Pathan, Shivakumar Keerthikumar, David Chisanga, Riccardo Alessandro, Ching-Seng Ang, Philip Askenase, Arsen O Batagov, Alberto Benito-Martin, Giovanni Camussi, Aled Clayton, Federica Collino, Dolores Di Vizio, Juan Manuel Falcon-Perez, Pedro Fonseca, Pamali Fonseka, Simona Fontana, Yong Song Gho, An Hendrix, Esther Nolte-'t Hoen, Nunzio Iraci, Kenneth Kastaniegaard, Thomas Kislinger, Joanna Kowal, Igor V Kurochkin, Tommaso Leonardi, Yaxuan Liang, Alicia Llorente, Taral R Lunavat, Sayantan Maji, Francesca Monteleone, Anders Øverbye, Theocharis Panaretakis, Tushar Patel, Héctor Peinado, Stefano Pluchino, Simona Principe, Goran Ronquist, Felix Royo, Susmita Sahoo, Cristiana Spinelli, Allan Stensballe, Clotilde Théry, Martijn J C van Herwijnen, Marca Wauben, Joanne L Welton, Kening Zhao, Suresh Mathivanan
Bioinformatics tools are imperative for the in depth analysis of heterogeneous high-throughput data. Most of the software tools are developed by specific laboratories or groups or companies wherein they are designed to perform the required analysis for the group. However, such software tools may fail to capture "what the community needs in a tool". Here, we describe a novel community-driven approach to build a comprehensive functional enrichment analysis tool. Using the existing FunRich tool as a template, we invited researchers to request additional features and/or changes...
2017: Journal of Extracellular Vesicles
journal
journal
47767
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"