Extracellular vesicles and biological activity
The biological potential of adipose tissue is increasingly understood not only through the presence of adipose-derived stem cells (ADSCs), but also through the complex biological signals released by these cells.
Among these signals, extracellular vesicles (EVs) are attracting growing scientific interest because of their role in cell-to-cell communication and in the biological processes associated with tissue regeneration.
A recent study published in Stem Cells International (2026) provides new and particularly interesting evidence on this aspect, comparing adipose tissue processed with BEAUTY-STEM DUO™ and LIPO-STEM DUO™ with tissue processed using the Coleman technique.
A particularly relevant finding: higher extracellular vesicle concentration
One of the most interesting findings of the study concerns the concentration of extracellular vesicles released by the cells obtained after adipose tissue processing.
Samples processed with BEAUTY-STEM DUO™/LIPO-STEM DUO™ showed an EV concentration of:
2.54 × 10⁸ particles/mL
compared with:
1.72 × 10⁸ particles/mL
for samples processed using the Coleman technique.
This corresponds to approximately 48% higher EV particle concentration in the BEAUTY/LIPO-STEM DUO™ group.
Importantly, the mean EV size and size mode did not show relevant differences between the groups, meaning that the finding concerns primarily the quantity of detected EV particles, rather than a demonstrated change in their size profile.
The authors interpret this result together with the increased early ADSC growth observed after BEAUTY/LIPO-STEM DUO™ processing, suggesting that the cells may display a more active biological profile. They also emphasise that the underlying mechanisms require further investigation. A higher concentration of extracellular vesicles adds a new dimension to the biological characterisation of mechanically processed adipose tissue.
The EV finding is part of a broader biological picture
The relevance of this result becomes clearer when considered together with the other biological parameters investigated in the same study.
Preserved adipose tissue morphology
Histological analysis showed that adipose fragments obtained with BEAUTY-STEM DUO™ and LIPO-STEM DUO™ maintained well-defined adipocyte morphology and preserved cytoplasmic membranes, despite the production of smaller microfragments than those obtained with Coleman processing.
ADSC characteristics maintained
ADSCs obtained following BEAUTY/LIPO-STEM DUO™ processing expressed the characteristic mesenchymal markers CD105, CD90, CD73, CD44 and CD29, while CD45 and CD34 were negative, with no substantial differences compared with Coleman-processed samples.
Comparable cellular yield
The number of extracted cells did not show a statistically significant difference between the two processing approaches (p = 0.442), indicating that the mechanical processing system maintained a cellular yield comparable to Coleman.
Higher early ADSC growth
A statistically significant difference was observed in ADSC growth at days 7 and 14, with cells obtained after BEAUTY/LIPO-STEM DUO™ processing showing higher growth than those obtained after Coleman processing (p = 0.006 for the 7- and 14-day comparison). At day 21, the difference did not remain statistically significant after correction for multiple comparisons.
Preserved multilineage differentiation potential
The ADSCs retained adipogenic, chondrogenic and osteogenic differentiation capacity following both processing methods.
Particularly interesting for regenerative and orthopaedic research, BEAUTY/LIPO-STEM DUO™-processed samples showed a significantly higher number of chondrogenic clusters at 14 days compared with Coleman-processed samples.
The study also observed differences in selected parameters of adipogenic and osteogenic differentiation, while the overall capacity for multilineage differentiation remained preserved.
From processing technology to biological activity
The findings are particularly relevant when considered in relation to the processing principle of BEAUTY-STEM DUO™ and LIPO-STEM DUO™.
The systems combine mechanical microfragmentation, continuous saline washing and filtration. During processing, the system is designed to remove blood, damaged cells, intracellular oil droplets, cellular debris and residual lidocaine while retaining the processed adipose tissue.
The authors propose that continuous washing may reduce biochemical residues and debris and potentially create a more favourable environment for ADSC proliferation and differentiation.
The present study therefore provides a biological picture extending beyond simple tissue morphology:
Mechanical processing
↓
Continuous washing + filtration + microfragmentation
↓
Preserved adipose morphology
↓
ADSC characteristics maintained
↓
Higher early ADSC growth
↓
Multilineage differentiation maintained
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Higher extracellular vesicle concentration
Taken together, these findings provide a coherent and highly promising biological profile.
A promising step toward regenerative applications
The combination of preserved tissue morphology, maintained ADSC characteristics, comparable cellular yield, enhanced early cellular growth, preserved multilineage differentiation, and higher extracellular vesicle concentration provides a strong scientific basis for further investigation of BEAUTY-STEM DUO™ and LIPO-STEM DUO™ as advanced mechanical adipose tissue processing systems.
Taken together, these findings provide new and compelling biological evidence supporting BEAUTY-STEM DUO™ and LIPO-STEM DUO™ as advanced mechanical adipose tissue processing systems, demonstrating preservation of key tissue and ADSC characteristics together with enhanced responses in selected biological parameters, including early cellular growth and extracellular vesicle production.
All data reported in this article are taken from the study by Veronese et al., published in Stem Cells International (2026). Read the full article: https://onlinelibrary.wiley.com/doi/10.1155/sci/9150101
