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Published in: Graefe's Archive for Clinical and Experimental Ophthalmology 5/2020

01-05-2020 | Oculoplastics and Orbit

4-Methylumbelliferone suppresses hyaluronan and adipogenesis in primary cultured orbital fibroblasts from Graves’ orbitopathy

Authors: Yeonjung Yoon, Min Kyung Chae, Eun Jig Lee, Jin Sook Yoon

Published in: Graefe's Archive for Clinical and Experimental Ophthalmology | Issue 5/2020

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Abstract

Purpose

In Graves’ orbitopathy (GO), hyaluronan secreted by orbital fibroblasts contributes to orbital tissue expansion. The goal of this research was to evaluate the potential benefit of 4-methylumbelliferone (4-MU), a hyaluronan synthase (HAS) inhibitor, in primary cultured orbital fibroblasts from Graves’ orbitopathy.

Methods

We assessed the viability of orbital fibroblasts using a live/dead cell assay. Hyaluronan synthesis was evaluated by enzyme-linked immunosorbent assay (ELISA) and quantitative real-time PCR (qPCR). Adipogenesis was assessed by Oil Red O staining and qPCR of adipogenic transcription factors.

Results

In orbital fibroblasts treated with 4-MU (up to 1000 μM), cell viability was preserved by 90%. 4-MU significantly inhibited HAS gene expression and hyaluronan production (*P < 0.05). With respect to adipogenesis, 4-MU suppressed the accumulation of lipids and reduced the number of adipocytes, while decreasing expression of adipogenic transcription factors.

Conclusions

4-MU represents a promising new therapeutic agent for GO based on its ability to inhibit hyaluronan production and adipogenesis, without decreasing cell viability.
Appendix
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Metadata
Title
4-Methylumbelliferone suppresses hyaluronan and adipogenesis in primary cultured orbital fibroblasts from Graves’ orbitopathy
Authors
Yeonjung Yoon
Min Kyung Chae
Eun Jig Lee
Jin Sook Yoon
Publication date
01-05-2020
Publisher
Springer Berlin Heidelberg
Published in
Graefe's Archive for Clinical and Experimental Ophthalmology / Issue 5/2020
Print ISSN: 0721-832X
Electronic ISSN: 1435-702X
DOI
https://doi.org/10.1007/s00417-019-04528-3

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