Wnt signalling inhibits adipogenesis in orbital fibroblasts from patients with Graves' orbitopathy

Sang Joon Jung; Yeon Jeong Choi; Tae Kwann Park; Sang Earn Woo; Bo Yeon Kim; Jin Sook Yoon; Sun Young Jang

doi:10.1136/bjophthalmol-2020-316898

Wnt signalling inhibits adipogenesis in orbital fibroblasts from patients with Graves' orbitopathy

Sang Joon Jung, Yeon Jeong Choi, Tae Kwann Park, Sang Earn Woo, Bo Yeon Kim, Jin Sook Yoon, Sun Young Jang

Department of Ophthalmology

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

Background/Aims To investigate the role of Wnt signalling in adipogenesis using an in vitro model of Graves' orbitopathy (GO). Methods Orbital fat was obtained from patients with GO and non-GO participants for primary orbital fibroblast (OF) culture. Expression levels of Wnt5a, Wnt10b, β-catenin, phospho-β-catenin and cyclin D1 were compared between GO and non-GO OFs. These expression levels were also determined during adipogenesis of GO and non-GO OFs. The effects of a stimulator and inhibitor of Wnt signalling on adipogenesis of GO and non-GO OFs were investigated. Results Western blotting analysis showed significant reductions in β-catenin and cyclin D1 and significant enhancement of phospho-β-catenin in OFs from patients with GO, compared with OFs from non-GO participants (p<0.05). Expression of Wnt5a, Wnt10b, β-catenin and cyclin D1 in OFs was highest on day 0, and then gradually declined after induction of adipogenic differentiation. The expression levels of PPAR 3, C/EBPα and C/EBPβ were reduced in Wnt stimulator-treated OFs in a dose-dependent manner. Oil red O staining confirmed that a stimulator of Wnt inhibited adipogenesis in GO OFs. Conclusion These results indicate that Wnt signalling inhibits adipogenesis in OFs from patients with GO and non-GO participants. Further studies are required to examine the potential of Wnt signalling as a target for therapeutic strategies.

Original language	English
Pages (from-to)	1019-1027
Number of pages	9
Journal	British Journal of Ophthalmology
Volume	106
Issue number	7
DOIs	https://doi.org/10.1136/bjophthalmol-2020-316898
Publication status	Published - 2022 Jul 1

Bibliographical note

Funding Information:
Contributors SJJ, TKP and SYJ were responsible for the conception and design of the study, as well as the intellectual content. YJC performed experiments. SEW, BYK, J-SY and SYJ revised the article critically for intellectual content. All authors read and approved the final manuscript. Funding This work was supported by a National Research Foundation of Korea (NRF) grant funded by the government of Korea (MSIT) (No. 2020R1A2C4002095), and was partially supported by the Soonchunhyang University Research Fund.

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All Science Journal Classification (ASJC) codes

Ophthalmology
Sensory Systems
Cellular and Molecular Neuroscience

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10.1136/bjophthalmol-2020-316898

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title = "Wnt signalling inhibits adipogenesis in orbital fibroblasts from patients with Graves' orbitopathy",

abstract = "Background/Aims To investigate the role of Wnt signalling in adipogenesis using an in vitro model of Graves' orbitopathy (GO). Methods Orbital fat was obtained from patients with GO and non-GO participants for primary orbital fibroblast (OF) culture. Expression levels of Wnt5a, Wnt10b, β-catenin, phospho-β-catenin and cyclin D1 were compared between GO and non-GO OFs. These expression levels were also determined during adipogenesis of GO and non-GO OFs. The effects of a stimulator and inhibitor of Wnt signalling on adipogenesis of GO and non-GO OFs were investigated. Results Western blotting analysis showed significant reductions in β-catenin and cyclin D1 and significant enhancement of phospho-β-catenin in OFs from patients with GO, compared with OFs from non-GO participants (p<0.05). Expression of Wnt5a, Wnt10b, β-catenin and cyclin D1 in OFs was highest on day 0, and then gradually declined after induction of adipogenic differentiation. The expression levels of PPAR 3, C/EBPα and C/EBPβ were reduced in Wnt stimulator-treated OFs in a dose-dependent manner. Oil red O staining confirmed that a stimulator of Wnt inhibited adipogenesis in GO OFs. Conclusion These results indicate that Wnt signalling inhibits adipogenesis in OFs from patients with GO and non-GO participants. Further studies are required to examine the potential of Wnt signalling as a target for therapeutic strategies.",

author = "Jung, {Sang Joon} and Choi, {Yeon Jeong} and Park, {Tae Kwann} and Woo, {Sang Earn} and Kim, {Bo Yeon} and Yoon, {Jin Sook} and Jang, {Sun Young}",

note = "Funding Information: Contributors SJJ, TKP and SYJ were responsible for the conception and design of the study, as well as the intellectual content. YJC performed experiments. SEW, BYK, J-SY and SYJ revised the article critically for intellectual content. All authors read and approved the final manuscript. Funding This work was supported by a National Research Foundation of Korea (NRF) grant funded by the government of Korea (MSIT) (No. 2020R1A2C4002095), and was partially supported by the Soonchunhyang University Research Fund. Publisher Copyright: {\textcopyright} ",

year = "2022",

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doi = "10.1136/bjophthalmol-2020-316898",

language = "English",

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T1 - Wnt signalling inhibits adipogenesis in orbital fibroblasts from patients with Graves' orbitopathy

AU - Jung, Sang Joon

AU - Choi, Yeon Jeong

AU - Park, Tae Kwann

AU - Woo, Sang Earn

AU - Kim, Bo Yeon

AU - Yoon, Jin Sook

AU - Jang, Sun Young

N1 - Funding Information: Contributors SJJ, TKP and SYJ were responsible for the conception and design of the study, as well as the intellectual content. YJC performed experiments. SEW, BYK, J-SY and SYJ revised the article critically for intellectual content. All authors read and approved the final manuscript. Funding This work was supported by a National Research Foundation of Korea (NRF) grant funded by the government of Korea (MSIT) (No. 2020R1A2C4002095), and was partially supported by the Soonchunhyang University Research Fund. Publisher Copyright: ©

PY - 2022/7/1

Y1 - 2022/7/1

N2 - Background/Aims To investigate the role of Wnt signalling in adipogenesis using an in vitro model of Graves' orbitopathy (GO). Methods Orbital fat was obtained from patients with GO and non-GO participants for primary orbital fibroblast (OF) culture. Expression levels of Wnt5a, Wnt10b, β-catenin, phospho-β-catenin and cyclin D1 were compared between GO and non-GO OFs. These expression levels were also determined during adipogenesis of GO and non-GO OFs. The effects of a stimulator and inhibitor of Wnt signalling on adipogenesis of GO and non-GO OFs were investigated. Results Western blotting analysis showed significant reductions in β-catenin and cyclin D1 and significant enhancement of phospho-β-catenin in OFs from patients with GO, compared with OFs from non-GO participants (p<0.05). Expression of Wnt5a, Wnt10b, β-catenin and cyclin D1 in OFs was highest on day 0, and then gradually declined after induction of adipogenic differentiation. The expression levels of PPAR 3, C/EBPα and C/EBPβ were reduced in Wnt stimulator-treated OFs in a dose-dependent manner. Oil red O staining confirmed that a stimulator of Wnt inhibited adipogenesis in GO OFs. Conclusion These results indicate that Wnt signalling inhibits adipogenesis in OFs from patients with GO and non-GO participants. Further studies are required to examine the potential of Wnt signalling as a target for therapeutic strategies.

AB - Background/Aims To investigate the role of Wnt signalling in adipogenesis using an in vitro model of Graves' orbitopathy (GO). Methods Orbital fat was obtained from patients with GO and non-GO participants for primary orbital fibroblast (OF) culture. Expression levels of Wnt5a, Wnt10b, β-catenin, phospho-β-catenin and cyclin D1 were compared between GO and non-GO OFs. These expression levels were also determined during adipogenesis of GO and non-GO OFs. The effects of a stimulator and inhibitor of Wnt signalling on adipogenesis of GO and non-GO OFs were investigated. Results Western blotting analysis showed significant reductions in β-catenin and cyclin D1 and significant enhancement of phospho-β-catenin in OFs from patients with GO, compared with OFs from non-GO participants (p<0.05). Expression of Wnt5a, Wnt10b, β-catenin and cyclin D1 in OFs was highest on day 0, and then gradually declined after induction of adipogenic differentiation. The expression levels of PPAR 3, C/EBPα and C/EBPβ were reduced in Wnt stimulator-treated OFs in a dose-dependent manner. Oil red O staining confirmed that a stimulator of Wnt inhibited adipogenesis in GO OFs. Conclusion These results indicate that Wnt signalling inhibits adipogenesis in OFs from patients with GO and non-GO participants. Further studies are required to examine the potential of Wnt signalling as a target for therapeutic strategies.

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AN - SCOPUS:85109011929

SN - 0007-1161

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SP - 1019

EP - 1027

JO - British Journal of Ophthalmology

JF - British Journal of Ophthalmology

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ER -

Wnt signalling inhibits adipogenesis in orbital fibroblasts from patients with Graves' orbitopathy

Abstract

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