Exosomes have emerged as an area of growing interest in cosmetic and skincare research due to their nanoscale structure and naturally occurring biological cargo. As interest in biotechnology-derived cosmetic ingredients increases, developers are seeking standardized approaches to evaluate extracellular vesicle preparations for formulation research.
Key Characterization Parameters
When evaluating MSC-derived exosomes for research applications, several analytical parameters are commonly assessed:
Nanoparticle Tracking Analysis (NTA) is frequently used to determine particle concentration and size distribution. Exosome-enriched preparations are typically reported within the 30-150 nm size range.
Figure 1. Purified Exosomes Biophysical Characterization.
Isolated exosomes showed a total yield >1 × 109 particles/unit (50 µg protein), mode 94.2 nm, median 107.3 nm;
Transmission Electron Microscopy (TEM) can be used to visualize vesicle morphology and confirm the presence of nanoscale extracellular vesicles.
Commonly reported exosome-associated markers include:
- CD9
- CD63
- CD81
These markers are often evaluated using flow cytometry, Western blotting, or ELISA-based approaches.
Figure 1. Purified Exosomes Marker Characterization Using Western Blotting.
Figure 2. Marker Validation.
Purified exosomes were analyzed by Western blot and Flow Cytometry (CD63/CD9). Both approaches confirmed strong marker expression, confirming exosome purity.
What Should Formulators Look For?
When assessing extracellular vesicle preparations for research purposes, considerations may include:
Particle size consistency
Particle concentration
Exosome marker expression
Manufacturing reproducibility
Storage stability
Availability of technical characterization data
Characterized MSC-Derived Exosomes for Research Applications
Product Highlights
-
Human adipose-derived
MSC
source
-
Greater than
1x109
particles per vial
-
94.2nm
Mode particle size
-
107.3nm
Median particle size
-
Approximately
50µg
of protein per vial
-
Positive expression of
CD9 & CD63
exosome markers
-
Characterized using
NTA
flow cytometry, and Western blotting
-
Stored at
-80°C
with a reported shelf life of
6 months
from manufacture
These characterization data provide researchers with a standardized extracellular vesicle preparation suitable for assay development, method validation, marker analysis, and exploratory formulation studies.
Frequently Asked Questions
MSC-derived exosomes are nanosized extracellular vesicles secreted by mesenchymal stem cells (MSCs). They contain proteins, lipids, and nucleic acids that facilitate cell-to-cell communication and are widely studied in extracellular vesicle research.
MSC-derived exosomes are typically reported to range from approximately 30–150 nm in diameter. Norgen's purified MSC-derived exosomes have a mode particle size of approximately 94.2 nm.
Exosomes are commonly characterized using a combination of analytical methods, including Nanoparticle Tracking Analysis (NTA) for particle sizing and concentration, Transmission Electron Microscopy (TEM) for morphology, and marker analysis using proteins such as CD9 and CD63.
Common exosome-associated markers include CD9, CD63, and CD81. These proteins are frequently analyzed using flow cytometry, Western blotting, or ELISA-based methods.
Nanoparticle Tracking Analysis (NTA) is a technique used to determine particle concentration and size distribution in extracellular vesicle preparations by tracking the movement of individual particles in suspension.
CD9 and CD63 are membrane-associated proteins commonly enriched on exosome surfaces. Their detection is widely used to support exosome identification and characterization.
Exosomes are a subtype of extracellular vesicles that originate from the endosomal pathway. Extracellular vesicles is a broader term that includes exosomes, microvesicles, and other membrane-bound particles released by cells.
MSC-derived exosomes are being investigated in cosmetic and skincare research because they contain naturally occurring biological molecules and may offer new opportunities for biotechnology-based formulation development. Research in this area is ongoing.
Purified exosomes should be stored at -80°C to help maintain particle integrity and analytical performance. Repeated freeze-thaw cycles should be avoided.
Norgen's purified MSC-derived exosomes are stable for up to 6 months from the date of manufacture when stored at -80°C.
Researchers may use purified exosomes for formulation feasibility studies, stability assessments, analytical testing, and exploratory product development research. Additional testing would be required for any commercial application.
Exosome quality is commonly assessed through particle size distribution, particle concentration, marker expression, morphology, manufacturing consistency, and storage stability.
Exosome positive controls are commonly used for assay validation, immunocapture testing, marker characterization, nucleic acid extraction workflows, and extracellular vesicle quantification studies.
Serum-free cultured exosomes are produced from cells grown without fetal bovine serum (FBS), reducing the risk of contamination from bovine-derived extracellular vesicles.
Yes. Purified exosomes contain RNA molecules, including mRNA and microRNA, that can be isolated and analyzed using a variety of molecular biology techniques.
Repeated freeze-thaw cycles are generally discouraged because they may affect vesicle integrity and analytical performance. Aliquoting samples before storage is often recommended.