Plasma Exosomes
Plasma Exosomes - Related Videos
04:21
Exosome Isolation: A Technique to Separate Exosomes from the Plasma of Non-small Cell Lung Cancer Patients
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2023
The plasma-isolated exosomes can be used as a non-invasive and repeatable way for the detection and follow-up of the biomarkers for early detection and disease progression. This video describes the protocol for the separation of exosomes from the plasma samples of non-small cell lung cancer patients, which could be used for DNA and protein extractions.
06:46
Isolation of Exosomes from the Plasma of HIV-1 Positive Individuals
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Cited by 51 •
2016
Techniques describing a gradient procedure to separate exosomes from human immunodeficiency virus (HIV) particles are described. This procedure was used to isolate exosomes away from HIV particles in human plasma from HIV-infected individuals. The isolated exosomes were analyzed for cytokine/chemokine content.
08:49
Exosomal miRNA Analysis in Non-small Cell Lung Cancer (NSCLC) Patients' Plasma Through qPCR: A Feasible Liquid Biopsy Tool
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Cited by 59 •
2016
This protocol describes the feasibility to perform miRNA profiling in exosomes, released in plasma of NSCLC patients, through a commercial exosome isolation kit with Proteinase K and RNAse treatments, in order to avoid circulating miRNAs contamination and evaluate their biomarker features in NSCLC.
11:38
An Innovative Method for Exosome Quantification and Size Measurement
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Cited by 102 •
2015
A method for isolation of exosomes from whole blood and further analysis by nanoparticle tracking using a semi-automatic instrument is presented in this article. The presented technology provides an extremely sensitive method for visualizing and analyzing particles in liquid suspension.
09:43
Isolation and Characterization of RNA-Containing Exosomes
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Cited by 515 •
2012
This paper demonstrates methods for the isolation, purification and detection of exosomes, as well as techniques for analysis of their molecular content. These methods are adaptable for exosome isolation from both cell culture media and biological fluids, and can beyond analysis of molecular content also be useful in functional studies.
FAQs
The lipid bilayer acts as a protective boundary around proteins, lipids, messenger RNA, and microRNA. By shielding this molecular cargo in the bloodstream, it helps preserve information from the originating cell until the vesicle reaches a recipient cell. This property makes plasma exosomes useful for examining how tumor-associated signals may be transferred between cells.
Exosomal cargo retains molecular information from the cells that release the vesicles. In cancer studies, material associated with tumor-cell release can therefore provide clues about tumor communication, progression, or treatment response. Interpretation depends on connecting the detected molecules with their originating cell population rather than treating all plasma exosomes as biologically identical.
Exosome release depends on a specific endosomal pathway. Inward budding of endosomal membranes produces internal vesicles within multivesicular bodies, and release occurs when these bodies fuse with the plasma membrane. This sequence links intracellular membrane trafficking to extracellular communication, helping explain how molecular cargo becomes available for delivery to other cells.
Because they circulate in blood and preserve molecular material from their cells of origin, plasma exosomes support minimally invasive liquid biopsy approaches. Researchers can study their cargo to investigate tumor-related biology without relying exclusively on direct tumor sampling. The resulting information may contribute to biomarker studies, assessment of progression, and evaluation of treatment response.
Plasma exosome studies can examine how tumors communicate with other cells, how immune regulation is influenced, and how molecular signals change during disease progression. They also support investigations of biomarkers and treatment response. Together, these applications position exosome analysis as a way to connect circulating molecular information with important cancer processes.
Their protected molecular cargo provides a circulating source of information that can be examined during cancer research. Changes in exosome-associated signals may help investigators study treatment response and disease progression over time. This monitoring potential is especially relevant to liquid biopsy development, where researchers seek minimally invasive approaches for following tumor-related biology.