MicroRNA-146a downregulates the production of hyaluronic acid and collagen I in Graves' ophthalmopathy orbital fibroblasts

Liu,Wei; Ma,Chao; Li,Hao-Yu; Chen,Lan; Yuan,Shan-Si; Li,Kai-Jun

doi:10.3892/etm.2020.9165

MicroRNA-146a downregulates the production of hyaluronic acid and collagen I in Graves' ophthalmopathy orbital fibroblasts

Authors:
- Wei Liu
- Chao Ma
- Hao-Yu Li
- Lan Chen
- Shan-Si Yuan
- Kai-Jun Li
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Affiliations: Department of Ophthalmology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
Published online on: September 1, 2020 https://doi.org/10.3892/etm.2020.9165
Article Number: 38
Copyright: © Liu et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

The present study aimed to investigate the effect of microRNA (miR)‑146a on the secretion of hyaluronic acid (HA) and collagen I in Graves' ophthalmopathy (GO) orbital fibroblasts, and identify potential novel targets for the clinical treatment of GO. Orbital fibroblasts were extracted from orbital connective tissue, and primary cells were identified via immunohistochemistry. The levels of HA and collagen I in orbital fibroblasts of non‑GO controls and patients with GO were examined via reverse transcription‑quantitative PCR (RT‑qPCR). miR‑146a was overexpressed or inhibited in primary orbital fibroblasts via lentiviral infection, and the levels of HA and collagen I following miR‑146a overexpression or inhibition were detected via ELISA and RT‑qPCR. The results indicated that the mRNA expression of HA and collagen I was higher in orbital fibroblasts from patients with GO compared with the non‑GO cohort. Overexpression of miR‑146a reduced, and inhibition of miR‑146a increased the production of HA and collagen I in GO orbital fibroblasts. In conclusion, it was demonstrated that miR‑146a downregulated the secretion of HA and collagen I in GO orbital fibroblasts in vitro, which may affect glycosaminoglycan aggregation and collagen deposition in GO.

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