4.4 Article

The Haoqin-Huaban formula alleviates UVB-induced skin damage through HOXA11-AS-mediated stabilization of EZH2

Journal

AMERICAN JOURNAL OF TRANSLATIONAL RESEARCH
Volume 14, Issue 4, Pages 2212-2230

Publisher

E-CENTURY PUBLISHING CORP

Keywords

Ultraviolet B (UVB) irradiation; Haoqin-Huaban formula (HQHB); HOXA11-AS; enhancer of zeste homolog 2 (EZH2); skin damage

Funding

  1. Natural Science Foundation of China [81774309]

Ask authors/readers for more resources

This study investigated the protective effects of Haoqin-Huaban formula (HQHB) on UVB-induced skin damage and its regulatory mechanisms. The results showed that HQHB inhibited UVB-induced skin damage in a dose-dependent manner by eliminating oxidative stress. Moreover, HQHB upregulated the expression of HOXA11-AS by activating HIF-1α, which stabilized EZH2 protein and reduced oxidative stress. Consequently, HOXA11-AS promoted cell proliferation and inhibited apoptosis in HaCaT cells.
Exposure of skin to ultraviolet B (UVB) irradiation induces oxidative damage, immune suppression, inflammation, and skin cancer. Recently, an increase in the use of traditional Chinese medicine decoction with antioxidant properties has emerged as protection for skin tissues against UVB-induced damage. The aim of this study was to investigate mechanisms of the protective effect of the Haoqin-Huaban formula (HQHB) on UVB-induced skin damage. First, cell survival, apoptosis, and oxidative stress were evaluated upon UVB irradiation in the presence of HQHB using HaCaT cells and mice as model systems. Subsequently, bioinformatic analyses, RNA pulldown assays, RNA immunoprecipitation, luciferase reporter assays, and chromatin immunoprecipitation were conducted to verify the regulation among HQHB, hypoxia-inducible factor 1 alpha (HIF-1 alpha), HOXA11-AS and enhancer of zeste homolog 2 (EZH2) in HaCaT cells. In this study, we found that administration of HQHB inhibited, in a dose-dependent manner, UVB-induced skin damage by eliminating oxidative stress. HQHB was found to upregulate HOXA11-AS expression by activating HIF-1 alpha. Furthermore, HOXA11-AS stabilized the EZH2 protein by inhibiting its ubiquitination and proteasomal degradation. Consequently, rescue assays demonstrated that HOXA11-AS promoted proliferation and inhibited apoptosis in HaCaT cells by reducing oxidative stress. Taken together, our results help to elucidate the function and regulatory mechanism of HQHB in reducing UVB-induced skin damage.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.4
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available