ArticleInternational journal of molecular sciences2025
Establishment of iPSC-Derived MSCs Expressing hsa-miR-4662a-5p for Enhanced Immune Modulation in Graft-Versus-Host Disease (GVHD).
Article in International journal of molecular sciences, 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
The immune-modulatory effects of mesenchymal stromal cells (MSCs) are widely used to treat inflammatory disorders, with indoleamine 2,4-dioxygenase-1 (IDO-1) playing a pivotal role in suppressing stimulated T-cell proliferation. Taking that three-dimensional (3D) cultures enhance MSCs' anti-inflammatory properties compared with two-dimensional (2D) cultures, the differentially expressed miRNAs were examined. Thus, we identified hsa-miR-4662a-5p (miR-4662a) as a key inducer of IDO-1 via its suppression of bridging integrator-1 (BIN-1), a negative regulator of the IDO-1 gene. The IDO-1-inducing potential of miR-4662a was conserved across primary MSCs from various donors and sources but exhibited variability. Notably, iPSC-derived MSCs (iMSCs) demonstrated superior IDO-1 induction and immune-modulatory efficacy compared with their donor-matched primary MSCs. Accordingly, iMSCs expressing miR-4662a (4662a/iMSC) exhibited stronger suppressive effects on T-cell proliferation and more potent suppressive effects on graft-versus-host disease (GVHD), improving survival rates and reducing tissue damage in the liver and gut. Our results point to the therapeutic potential of standardized, off-the-shelf 4662a/iMSC as a robust immune-modulating cell therapy for GVHD.
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