High-Quality Lipoaspirate Following 1470-nm Radial Emitting Laser-Assisted Liposuction

Area of Science:

• Regenerative Medicine
• Biotechnology
• Plastic Surgery

Background:

• Laser-assisted liposuction (LAL) aims to maximize viable adipocyte yield for improved graft longevity.
• Optimizing tissue processing of lipoaspirates remains a critical challenge for successful fat grafting.

Purpose of the Study:

• To evaluate the viability and potency of stromal vascular fraction (SVF) cells and adipose-derived stem cells (ASCs) from lipoaspirates.
• To compare enzymatic versus nonenzymatic processing methods for LAL-harvested fat samples.
• To assess the efficacy of a novel 1470-nm diode radial emitting LAL platform.

Main Methods:

• Lipoaspirates from 10 subjects were processed using enzymatic and nonenzymatic methods.
• SVF cells were isolated and cultured to assess viability and proliferation capacity.
• Flow cytometry, gene expression, and immunofluorescence were used to confirm ASC markers and adipose origin.

Main Results:

• Both methods yielded high SVF cell viability (97-98%) and significant counts of SVF and ASCs.
• Nonenzymatic processing resulted in an average of 8.7 × 10^6 SVF cells/mL and 1 × 10^6 ASCs/mL.
• Enzymatic processing yielded slightly higher counts: 9.4 × 10^6 SVF cells/mL and 1.2 × 10^6 ASCs/mL.
• Cellular analysis confirmed the adipose origin and potency of the isolated ASCs.

Conclusions:

• LAL lipoaspirates yield abundant viable SVF cells and ASCs via both enzymatic and nonenzymatic processing.
• The high purity and ASC content of lipoaspirates are crucial for extended graft longevity.
• Eliminating enzymatic digestion offers potential benefits in reduced process time, cost, and regulatory burden.