Evidence mapPaperPMID 42565655Full record

ArticleInvestigative ophthalmology & visual science2026

Epigenetic Modulation of Thyroid-Stimulating Hormone Receptor Expression in Orbital Fibroblasts From Graves' Ophthalmopathy: Target for Treatment.

Rajit Chompoowong, Pimchanok Phankeaw, Apinya Suwannavong, Sopita Visamol, Sukonlaphat Pitikiadtikun, Preamjit Saonanon, Vannakorn Pruksakorn, Panida Potita, Tanapat Palaga, Sita Virakul

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Article in Investigative ophthalmology & visual science, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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2 · The registry

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

10 authors.

Rajit ChompoowongMedical Microbiology, Interdisciplinary Program, Graduate School, Chulalongkorn University, Bangkok, Thailand.
Pimchanok PhankeawMedical Microbiology, Interdisciplinary Program, Graduate School, Chulalongkorn University, Bangkok, Thailand.
Apinya SuwannavongMedical Microbiology, Interdisciplinary Program, Graduate School, Chulalongkorn University, Bangkok, Thailand.
Sopita VisamolMedical Microbiology, Interdisciplinary Program, Graduate School, Chulalongkorn University, Bangkok, Thailand.
Sukonlaphat PitikiadtikunMedical Microbiology, Interdisciplinary Program, Graduate School, Chulalongkorn University, Bangkok, Thailand.
Preamjit SaonanonDepartment of Ophthalmology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.
Vannakorn PruksakornDepartment of Ophthalmology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.
Panida PotitaDepartment of Ophthalmology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.
Tanapat PalagaDepartment of Microbiology, Faculty of Science, Chulalongkorn University, Bangkok, Thailand.
Sita VirakulDepartment of Microbiology, Faculty of Science, Chulalongkorn University, Bangkok, Thailand.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Purpose: This study aims to investigate the expression and function of DNA methyltransferases (DNMTs) and histone methyltransferase EZH2 in regulating the expression of thyroid-stimulating hormone receptor (TSHR) and fibrotic markers by orbital fibroblasts from Graves' ophthalmopathy (GO) patients. Methods: DNMTs mRNA levels were measured in orbital fibroblasts from healthy controls (control orbital fibroblasts), active GO fibroblasts, and inactive GO fibroblasts (iGOFs). TSHR and other fibrotic markers were measured in iGOFs treated with platelet-derived growth factor (PDGF)-BB and decitabine (a DNMT inhibitor) or DZNep (an EZH2 inhibitor) or small interfering RNA by RT-qPCR or Western blotting. Results: DNMT1 and DNMT3A mRNA expressions were significantly higher in active GOFs compared with iGOFs and control orbital fibroblasts. Among all DNMTs, DNMT1 expression was at the highest levels. Upon PDGF-BB stimulation, DNMT1 and DNMT3A mRNA levels in iGOFs were significantly induced. Decitabine significantly inhibited PDGF-BB-induced cell viability and TSHR mRNA levels in iGOFs, whereas DNMT1 silencing partly reduced TSHR protein. Because a positive correlation between DNMT1 and EZH2 expression in iGOF was observed, the regulatory role of EZH2 on TSHR expression was also investigated. DZNep slightly decreased TSHR mRNA expression in iGOFs and iGO orbital tissue, whereas EZH2 silencing partly affects TSHR expression. Conclusions: This study demonstrates that DNMT1 is the major DNMT during the active stage of GO. Moreover, DNMT1 is inducible upon PDGF-BB stimulation in iGOFs, suggesting an important role of PDGF-BB and DNMT1 during an active stage of GO. Our findings also highlighted that the inhibition of DNMT or EZH2 potentially suppressed TSHR mRNA expression, suggesting potential therapies targeting DNMT/EZH2 in controlling GO progression.

Indexed as

Epigenesis, GeneticFibroblastsGene Expression RegulationGraves OphthalmopathyOrbitReceptors, ThyrotropinAdultAzacitidineBecaplerminBlotting, WesternCells, CulturedDecitabineDNA (Cytosine-5-)-Methyltransferase 1DNA (Cytosine-5-)-MethyltransferasesDNA Methyltransferase 3AEnhancer of Zeste Homolog 2 ProteinAzacitidineBecaplerminDecitabineDNA (Cytosine-5-)-Methyltransferase 1DNA (Cytosine-5-)-MethyltransferasesDNA Methyltransferase 3ADNMT1 protein, humanDNMT3A protein, humanEnhancer of Zeste Homolog 2 ProteinEZH2 protein, humanProto-Oncogene Proteins c-sisReceptors, ThyrotropinRNA, Messenger

Identifiers

PMID42565655
PMCPMC13460039

What Socratic holds

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LicenceCC BY-NC-ND
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.