Human Mesenchymal Stromal Cell-Derived Exosomes Promote In Vitro Wound Healing by Modulating the Biological Properties of Skin Keratinocytes and Fibroblasts and Stimulating Angiogenesis

International Journal of Molecular Sciences

Raluca Tutuianu¹  Ana-Maria Rosca¹  Maya Simionescu¹  Daniela Madalina Iacomi¹  Irina Titorencu¹ 

[1] Cell and Tissue Engineering Laboratory, Institute of Cellular Biology and Pathology “Nicolae Simionescu”, 050568 Bucharest, Romania;

关键词: exosomes;    bone marrow-derived mesenchymal stromal/stem cells;    keratinocytes;    fibroblasts;    angiogenesis;    skin organotypic model;   

DOI  :  10.3390/ijms22126239

来源: DOAJ

【 摘 要 】

Bone marrow-derived mesenchymal stromal cells (MSCs) are major players in regenerative therapies for wound healing via their paracrine activity, mediated partially by exosomes. Our purpose was to test if MSC-derived exosomes could accelerate wound healing by enhancing the biological properties of the main cell types involved in the key phases of this process. Thus, the effects of exosomes on (i) macrophage activation, (ii) angiogenesis, (iii) keratinocytes and dermal fibroblasts proliferation and migration, and (iv) the capacity of myofibroblasts to regulate the turnover of the extracellular matrix were evaluated. The results showed that, although exosomes did not exhibit anti-inflammatory properties, they stimulated angiogenesis. Exposure of keratinocytes and dermal (myo)fibroblasts to exosomes enhanced their proliferation and migratory capacity. Additionally, exosomes prevented the upregulation of gene expression for type I and III collagen, α-smooth muscle actin, and MMP2 and 14, and they increased MMP13 expression during the fibroblast–myofibroblast transition. The regenerative properties of exosomes were validated using a wound healing skin organotypic model, which exhibited full re-epithelialization upon exosomes exposure. In summary, these data indicate that exosomes enhance the biological properties of keratinocytes, fibroblasts, and endothelial cells, thus providing a reliable therapeutic tool for skin regeneration.

【 授权许可】

Unknown