ArticleCurrent gene therapy2025
Expression of miR-92a in Green Tea EGCG Preconditioned Adiposederived Stem Cells Ameliorates Inflammatory Response and Increases Cartilage Regeneration in RA Rats through KLF4/IL-17/MMP-2 Axis Modulation.
Article in Current gene therapy, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundThe global prevalence of rheumatoid arthritis (RA) is on the rise. Numerous studies have demonstrated the potential of stem cell-based therapies in RA treatment. Experimental evidence suggests that preconditioning enhances the regenerative capabilities of stem cells compared to their unconditioned counterparts.
objectiveThis study aimed to evaluate whether adipose-derived stem cells (ADSCs) preconditioned with green tea epigallocatechin gallate (EGCG) and miR-92a exhibit superior therapeutic effects in RA compared to unconditioned ADSCs.
methodsBoth in vitro and in vivo models were employed. In the cellular model, ADSCs were preconditioned with EGCG and miR-92a. In the animal model, male Wistar rats were used, and RA was induced using the collagen-induced arthritis (CIA) model. Following RA induction, the animals were divided into six groups: Sham (healthy rats), RA (RA-induced rats), RA+ADSC (RA-induced rats receiving unconditioned ADSCs), RA+E-ADSC (RA-induced rats receiving EGCGpreconditioned ADSCs), RA+mic-ADSC (RA-induced rats receiving miR-92a mimicpreconditioned ADSCs), and RA+inh-ADSC (RA-induced rats receiving miR-92a inhibitorpreconditioned ADSCs).
resultsIn the cellular model, preconditioning with EGCG and miR-92a activated the CXCR4/p- Akt signaling pathway, thereby enhancing ADSC viability. In the animal model, RA induction caused several joint pathologies, including hind paw swelling, disrupted bone metabolism, immune cell infiltration, increased expression of IL-17, KLF4, and IL-6, as well as cartilage degradation. While transplantation of unconditioned ADSCs modestly improved these pathological features, the administration of E-ADSCs and mic-ADSCs significantly ameliorated these conditions in RA rats. Conversely, the therapeutic effects of E-ADSCs and mic-ADSCs were attenuated by the transplantation of inh-ADSCs.
conclusionThe therapeutic effects of E-ADSCs and mic-ADSCs in RA were strongly associated with the modulation of the KLF4/IL-17/MMP-2 axis. These findings suggest that ADSCs preconditioned with EGCG and miR-92a hold considerable clinical promise for the treatment of RA.
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