SVF
Level D· Preclinical EvidenceAnimal Study

Single-Cell Sequencing Reveals That CCL2+ Adipose-Derived Stem Cells Promote Diabetic Wound Healing Through the CCL2-ACKR1 Signaling Axis.

Zhao S., Chen W., Liu K., Xie J., Chen Y., Dai H.

Animal Study on Diabetic Foot, Chronic Wound, published in FASEB J (2026) — summary generated from the PubMed abstract.

This page is generated from the PubMed record. The Thai description is an automated summary of bibliographic fields and the abstract, not a full translation, and is not medical advice.

Study type
Animal Study
Journal
FASEB J (2026)
Country
United States
Reported sample size
—
PMID
42033160
DOI
10.1096/fj.202601311R

Abstract (original English)

Diabetic wounds, particularly diabetic foot ulcers, represent a significant clinical challenge owing to impaired vascularization, persistent inflammation, and dysfunctional extracellular matrix remodeling. Although adipose-derived stem cells offer therapeutic potential, their heterogeneity and functional impairment within the diabetic microenvironment limit their efficacy. Using single-cell RNA sequencing of human adipose and diabetic wound tissues, we identified a distinct CCL2-expressing ADSC subpopulation that is enriched in obese individuals and exhibits elevated stemness, unique metabolic profiles, and enrichment in pathways related to ECM organization and tissue development. This subpopulation functions as a key communication node, engaging with fibroblasts, macrophages, and endothelial cells through ligand-receptor interactions such as CCL2-ACKR1, TGFB1-TGFBR1, and IL34-CSF1R. Exosomes secreted by these CCL2-positive ADSCs were found to be enriched in CCL2, TGFB1, and IL34. In a diabetic mouse wound model, CCL2-ADSC-derived exosomes significantly accelerated wound closure compared with conventional exosomes, promoting angiogenesis, collagen deposition, and M2-macrophage polarization while reducing pro-inflammatory cytokines. In vitro, these exosomes reversed high-glucose-induced suppression of endothelial cell proliferation, migration, and tube formation. Mechanistically

What this study does not prove

  • • This study does not prove SVF is an approved treatment or a replacement for standard care.
  • • This is preclinical work; animal or laboratory results cannot be applied to humans.

Evidence level

Evidence comes from animal or laboratory studies and has not been confirmed in humans.

How we grade evidence
Wound HealingHumansAnimalsMiceChemokine CCL2Signal TransductionAdipose TissueStem CellsMice, Inbred C57BLSingle-Cell Analysis
Ankle & FootSystemic / IVDiabetic FootChronic Wound
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