DKK3 (Dikkopf-3) Transdifferentiates Fibroblasts Into Functional Endothelial Cells-Brief Report

Arteriosclerosis, Thrombosis, and Vascular Biology
Ting ChenLi Zhang

Abstract

Objective- To determine the role of a cytokine-like protein DKK3 (dikkopf-3) in directly transdifferentiating fibroblasts into endothelial cells (ECs) and the underlying mechanisms. Approach and Results- DKK3 overexpression in human fibroblasts under defined conditions for 4 days led to a notable change in cell morphology and progenitor gene expression. It was revealed that these cells went through mesenchymal-to-epithelial transition and subsequently expressed KDR (kinase insert domain receptor) at high levels. Further culture in EC defined media led to differentiation of these progenitors into functional ECs capable of angiogenesis both in vitro and in vivo, which was regulated by the VEGF (vascular endothelial growth factor)/miR (microRNA)-125a-5p/Stat3 (signal transducer and activator of transcription factor 3) axis. More importantly, fibroblast-derived ECs showed the ability to form a patent endothelium-like monolayer in tissue-engineered vascular grafts ex vivo. Conclusions- These data demonstrate that DKK3 is capable of directly differentiating human fibroblasts to functional ECs under defined media and provides a novel potential strategy for endothelial regeneration.

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Citations

May 28, 2020·Arteriosclerosis, Thrombosis, and Vascular Biology·Ying ShaoXiaofeng Yang
Feb 27, 2020·Arteriosclerosis, Thrombosis, and Vascular Biology·Ying H ShenHong S Lu
Oct 28, 2020·Antioxidants & Redox Signaling·Liujun JiangQingbo Xu
Dec 16, 2020·International Journal of Molecular Sciences·Antonino TuttolomondoAntonio Pinto
Sep 4, 2021·Circulation Research·Liujun JiangLi Zhang

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