Original title: Melatonin-stimulated MSC-derived exosomes improve diabetic wound healing through regulating macrophage M1 and M2 polarization by targeting the PTEN/AKT pathway
Stem cells release tiny packages called exosomesTiny packages released by cells that can affect other cells. that can affect other cells. Researchers collected exosomes from stem cells treated with melatonin and tested them in lab experiments and diabetic wound models. The treated exosomes shifted macrophages, immune cells involved in inflammation, toward a less inflammatory state. The researchers link this shift to changes in the PTEN/AKT pathwayA chain of cell signals involving the PTEN and AKT proteins., and report better wound healing in the animal model.
Imagine a kitchen crew cleaning up after a meal. Some workers keep the mess stirred up, while others help clear it away, and the kitchen cannot recover until their efforts are better balanced. In this paper, the crew stands for immune cells in a wound, and the melatonin-treated cell packages help shift the balance toward the workers that calm inflammation and support repair.
Diabetes can delay the inflammation that normally helps a wound recover, making healing difficult. In lab and animal models, these melatonin-pretreated cell particles reduced inflammation and supported blood-vessel growth and collagen formation, processes involved in repairing tissue.
The abstract reports laboratory experiments and animal wound models; it does not establish that MT-Exo are safe or effective for treating wounds in people. It also does not specify how long the effects last or compare the treatment with established clinical care.
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Melatonin-stimulated MSC-derived exosomes improve diabetic wound healing through regulating macrophage M1 and M2 polarization by targeting the PTEN/AKT pathway — Wei Liu, Muyu Yu, Dong Xie et al. — Stem Cell Research & Therapy — doi:10.1186/s13287-020-01756-x
Abstract licence: CC BY
Explanation generated by Synthesis from the abstract — it is not the original paper.