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Peer-reviewed veterinary case report

Hypoxic ADSC Exosomes Alleviate Primary Sjögren's Syndrome-Induced Skin Injury via GLRX2 Delivery and Ferroptosis Suppression.

Journal:
Immunological investigations
Year:
2025
Authors:
Wang, Xin et al.
Affiliation:
Department of Rheumatology and Immunology · China
Species:
rodent

Abstract

BACKGROUND: The aim of the present study was to assess the therapeutic effects of ADSC-Exos for SS-induced skin injury. METHODS: A mouse model of SS was constructed and Exos from ADSCs (Exos) and hypoxia-pretreated ADSCs (HExos) were isolated. The therapeutic effects of Exos were identified using an enzyme-linked immunosorbent assay, immunohistochemistry, and immunofluorescence. High-throughput sequencing (HTS) was employed to identify differentially expressed genes between ADSC-Exos and ADSC-HExos. The results showed that treatment with ADSC-Exos, especially ADSC-HExos, inhibited SS-induced expression of inflammatory factors, ferroptosis, and deposition of reactive oxygen species. RESULTS: The results of HTS and polymerase chain reaction analysis revealed that GLRX2 plays an important role in protected effects of ADSC-HExo against SS-induced skin injury.analysis usingHaCaT cells confirmed that GLRX2 inhibited lipopolysaccharide-induced skin injury by inhibiting ferroptosis, as confirmed with the ferroptosis inhibitorFerrostatin-1. GLRX2 upregulation increased the therapeutic effects of ADSC-Exos against skin injury of SS mice. CONCLUSION: Moreover,ADSC-HExos effectively promoted collagen I expression, suggesting that ADSC-HExos attenuated primary SS-induced skin injury via GLRX2 delivery and ferroptosis suppression.

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Original publication: https://pubmed.ncbi.nlm.nih.gov/40492693/