This review summarizes current knowledge on the role of tumor exosomes and microvesicles in progression, metastasis, and angiogenesis of tumors, as well as in suppression of adaptive and innate immunity.
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Preparation of Small Extracellular Vesicles Using Sequential Ultrafiltration with Regenerated Cellulose Membranes of Different Molecular Weight Cutoffs: A Study of Morphology and Size by Electron Microscopy.
Microsc Microanal
January 2025
Cellular and Molecular Biotechnology Research Institute, Department of Life Science and Biotechnology, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central-6, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8566, Japan.
There is still room for improvement in the isolation and purification techniques for extracellular vesicles (EVs), particularly in the separation of exosomes (small EVs) from other membrane vesicles such as microvesicles and apoptotic bodies. Furthermore, it is crucial to establish preparation methods that preserve the intrinsic properties of EVs in this context. In this study, we focus on the isolation and preparation of small EVs, exosomes, from the culture supernatant of a human cell line.
View Article and Find Full Text PDFValosin-containing protein (VCP), a component of tumor-derived extracellular vesicles, impairs the barrier integrity of brain microvascular endothelial cells.
BBA Adv
December 2024
University of São Paulo, Department of Cell and Developmental Biology, Institute of Biomedical Sciences (ICB), São Paulo, 05508-000, Brazil.
Metastases are the leading cause of cancer-related deaths, and their origin is not fully elucidated. Recently, studies have shown that extracellular vesicles (EVs), particularly small extracellular vesicles (sEV), can disrupt the homeostasis of organs, promoting the development of a secondary tumor. However, the role of sEV in brain endothelium and their association with metastasis related to breast cancer is unknown.
View Article and Find Full Text PDFExtracellular Vesicles: Advanced Tools for Disease Diagnosis, Monitoring, and Therapies.
Int J Mol Sci
December 2024
Department of Experimental Biology, Faculty of Health Sciences, University of Jaén, 23071 Jaén, Spain.
Extracellular vesicles (EVs) are a heterogeneous group of membrane-encapsulated vesicles released by cells into the extracellular space. They play a crucial role in intercellular communication by transporting bioactive molecules such as proteins, lipids, and nucleic acids. EVs can be detected in body fluids, including blood plasma, urine, saliva, amniotic fluid, breast milk, and pleural ascites.
View Article and Find Full Text PDFQuantitative fluorescent nanoparticle tracking analysis and nano-flow cytometry enable advanced characterization of single extracellular vesicles.
J Extracell Biol
January 2025
RoseBio Milano Italy.
Current state-of-the-art tools for analysing extracellular vesicles (EVs) offer either highly sensitive but unidimensional bulk measurements of EV components, or high-resolution multiparametric single-particle analyses which lack standardization and appropriate reference materials. This limits the accuracy of the assessment of marker abundance and overall marker distribution amongst individual EVs, and finally, the understanding of true EV heterogeneity. In this study, we aimed to define the standardized operating procedures and reference material for fluorescent characterization of EVs with two commonly used EV analytical platforms-nanoparticle tracking analysis (NTA) and nano-flow cytometry (nFCM).
View Article and Find Full Text PDFSignal Peptides and Their Fragments in Post-Translation: Novel Insights of Signal Peptides.
Int J Mol Sci
December 2024
Department of Neurotoxicology, Graduate School of Medical Sciences and Medical School, Nagoya City University, Nagoya 467-8601, Japan.
Signal peptides (SPs), peptide sequences located at the N-terminus of newly synthesized proteins, are primarily known for their role in targeting proteins to the endoplasmic reticulum (ER). It has traditionally been assumed that cleaved SPs are rapidly degraded and digested near the ER. However, recent evidence has demonstrated that cleaved SP fragments can be detected in extracellular fluids such as blood flow, where they exhibit bioactivity.
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