Abstract
Abnormal interactions between skin cells play an important role in the dysregulation of diabetic wound recovery. Exosomes are cell-derived lipid nanoparticles that transport messages between cells, and isolating and identifying potential therapeutic noncoding RNAs from exosomes is very important. We demonstrated that treatment with Exos from high glucose-pretreated immortalized human epidermal (HaCaT) cells (HG-Exos) could delay the wound healing process in diabetic mice. Further analysis indicated the Exo-mediated uptake of LINC01435 in recipient human umbilical vein endothelial cells (HUVECs) changes the subcellular localization of the transcription factor Yin Yang 1 (YY1) and cooperates with YY1 to upregulate the expression of histone deacetylases (HDACs)8, resulting in decreased tube formation and ability of HUVECs to migrate, thus angiogenesis was inhibited. These results suggest that LINC01435/YY1/HDAC8 may be an important signaling pathway affecting the recovery of diabetic wounds, which makes it a potential target for the treatment of diabetic foot ulcers.
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