Exosome Biomarker Analysis
Exosome Biomarker Analysis - Related Videos
11:02
Detection of Exosomal Biomarker by Electric Field-induced Release and Measurement (EFIRM)
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Cited by 43 •
2015
Exosomes are microvesicular structures found within biofluids that potentially carry important disease discriminatory biomarkers. Here, a novel method is used to specifically extract exosomes and rapidly test the exosomal cargo for both RNA/protein targets following the disruption of exosomes using non-uniform electric cyclic square waves.
03:36
Gold Immunostaining of Exosomal Sections: A Technique to Visualize Diagnostic Markers in Exosomal Lumen
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2023
In this video, we demonstrate gold immunostaining of biomarkers localized within the lumen region of ultrathin exosomal sections. This technique enables early diagnosis of diseases by visualization of target molecules within the exosomes secreted by the diseased cells.
05:05
A Modified Precipitation Method to Isolate Urinary Exosomes
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Cited by 32 •
2015
This manuscript describes a protocol for isolating exosomes from human urine using a modified precipitation technique.
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.
08:28
An Overview of bGDGT Biomarker Analysis for Paleoclimatology
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2023
Source: Laboratory of Jeff Salacup - University of Massachusetts Amherst Throughout this series of videos, natural samples were extracted and purified in search of organic compounds, called biomarkers, that can relate information on climates and environments of the past. One of the samples analyzed was sediment. Sediments accumulate over geologic time in basins, depressions in the Earth into which sediment flows through the action of fluid (water or air), movement, and gravity. Two main types...
FAQs
The analysis depends on linking detected proteins, lipids, or nucleic acids to exosome-enriched material rather than treating every measured molecule as a biomarker. Isolation quality, particle characterization, and surface-marker assessment help determine whether the sample contains the intended vesicles. Standardizing these steps reduces contamination and sample-to-sample variability, improving confidence that molecular profiles reflect biological state or disease.
Size and surface-marker measurements provide an initial characterization of the isolated vesicle population. They help researchers assess whether the material is consistent with the exosomes being studied before interpreting enclosed proteins, lipids, or nucleic acids. This information supports more reliable downstream immunoassays, mass spectrometry, or sequencing and helps distinguish biologically relevant profiles from poorly defined samples.
The choice of analytical method depends partly on the cargo being investigated. Immunoassays can examine selected proteins, mass spectrometry can profile proteins or lipids, and sequencing can analyze nucleic acids. These approaches provide complementary molecular information, so researchers can select a readout suited to the biological question rather than relying on one universal measurement strategy.
A typical workflow begins by collecting exosomes from a biofluid or cell culture and isolating them from the surrounding sample. Researchers then characterize particle size and surface markers before measuring enclosed proteins, lipids, or nucleic acids. The resulting molecular profile can be compared with the intended biological state, disease context, or experimental condition.
Bioengineers may apply this analysis to support noninvasive diagnostics, monitor disease, or evaluate therapeutic responses. Molecular cargo profiles can provide information without relying solely on more invasive sampling approaches. In addition, the measured composition can inform the design of exosome-based delivery systems, where understanding vesicle-associated molecules is relevant to developing engineered biological tools.
Changes in molecular cargo can be examined as indicators of biological state or disease during therapeutic evaluation. The same type of profiling can also provide composition information for designing exosome-based delivery systems. In both settings, reliable interpretation depends on consistent isolation, characterization, and detection, because contaminants or variable samples can obscure the outcome being assessed.