Protein Profiling of Mechanically Processed Lipoaspirates: Discovering Wound Healing and Antifibrotic Biomarkers in Nanofat.

Early human evidence such as case series or small samples is exploring possible benefits.

• Level A · Stronger Clinical Evidence
• Level B · Emerging clinical evidence with positive signals
• Level C · Early human research exploring benefits
• Level D · Scientific groundwork from lab and animal studies
• Emerging · Emerging topic under active research

Abstract (original English)

Background Nanofat is an injectable oily emulsion, rich in adipose-derived stem cells and growth factors. It is prepared from lipoaspirates through mechanical emulsification and filtration. Despite being successfully used in several procedures in regenerative medicine such as scar attenuation, skin rejuvenation, and treatment of chronic wounds, little is known about exactly how nanofat induces regeneration in treated skin at the molecular level. Methods Microfat and nanofat samples were isolated from 18 healthy patients. Proteomic profiling was performed through untargeted mass spectrometry proteomics and multiplex antibody arrays. Pathway enrichment analysis of differentially expressed proteins between microfat and nanofat was performed using Gene Ontology, Reactome, and Kyoto Encyclopaedia of Genes and Genomes as reference databases. Results Untargeted proteomics showed that up-regulated genes in nanofat are involved in innate immunity responses, coagulation, and wound healing, whereas down-regulated genes were linked to cellular migration and extracellular matrix production. Secretome array screening of microfat and nanofat samples showed no significantly different expression, which strongly suggests that the mechanical emulsification step does not affect the concentration of tissue regeneration biomarkers. The identified proteins are involved in wound healing, cellular migr

Evidence level

Early human evidence such as case series or small samples is exploring possible benefits.

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