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01-09-2020 | Original Article

miR-27b promotes angiogenesis and skin repair in scalded rats through regulating VEGF-C expression

Authors: Jingyan Liu, Furong Sun, Xueming Wang, Qingxia Bi

Published in: Lasers in Medical Science | Issue 7/2020

Abstract

In this study, the effects of miR-27b on angiogenesis in skin repair procedure in rats with deep II degree scald were explored. The rat model of deep II scald was established. miR-27b mimics and inhibitor were injected daily at the wound site for 3 weeks. The healing of scald was observed at 0, 3, 7, 14, and 21 days after the model was established, and the pathological changes of skin were observed by HE and Masson’s trichrome stains. Skin tissues were taken 14 days after the operation; CD31 and Ki-67 immunohistochemistry was exerted to evaluate neovascularization and proliferation. Human microvascular endothelial cells (HMEC-1) cells were cultured in vitro. miR-27b mimics or inhibitor was transfected to construct over-expression or inhibition cell lines. MTT assay, scratch test, and angiogenesis test were used to evaluate cell proliferation, migration, and vascular regeneration. Finally, RT-PCR and Western blot were exerted to determine the expression of vascular endothelial growth factor C (VEGF-C), epidermal growth factor (EGF) mRNAs, and protein, respectively. Control, inhibitor, mi-NC, VEGF-C, inhibitor + si-NC, and inhibitor + VEGF-C siRNA groups were used to further analyze the mechanism of miR-27b on VEGF-C; the above experiments were repeated. In contrast to model group, miR-27b inhibitor could significantly promote the healing of scalded skin, alleviate the pathological status of scalded, and promote the angiogenesis and proliferation (p < 0.05). In vitro, miR-27b inhibitor evidently promoted cell proliferation, migration, and angiogenesis and increased the expression of VEGF-C, EGF genes, and protein, while miR-27b mimics significantly reversed the above trends. Further studies shown that downregulation of miR-27b expression can promote the proliferation, migration, and angiogenesis of HMEC-1 cells by promoting the expression of VEGF-C. miR-27b promotes angiogenesis and skin repair in scalded rats through regulating VEGF-C expression.

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Title: miR-27b promotes angiogenesis and skin repair in scalded rats through regulating VEGF-C expression
Authors: Jingyan Liu
Furong Sun
Xueming Wang
Qingxia Bi
Publication date: 01-09-2020
Publisher: Springer London
Published in: Lasers in Medical Science / Issue 7/2020
Print ISSN: 0268-8921
Electronic ISSN: 1435-604X
DOI: https://doi.org/10.1007/s10103-020-02991-7

Keynote webinar | Spotlight on medication adherence

Springer Medicine

miR-27b promotes angiogenesis and skin repair in scalded rats through regulating VEGF-C expression

Abstract

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

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