Thyroid hormone suppresses medulloblastoma progression through promoting terminal differentiation of tumor cells

Yijun Yang, Silvia Anahi Valdés-Rives, Qing Liu, Tong Gao, Chakkapong Burudpakdee, Yuzhe Li, Jun Tan, Yinfei Tan, Christian A. Koch, Yuan Rong, Steven R. Houser, Shuanzeng Wei, Kathy Q. Cai, Jinhua Wu, Sheue yann Cheng, Robert Wechsler-Reya, Zeng jie Yang

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Hypothyroidism is commonly detected in patients with medulloblastoma (MB). However, whether thyroid hormone (TH) contributes to MB pathogenicity remains undetermined. Here, we find that TH plays a critical role in promoting tumor cell differentiation. Reduction in TH levels frees the TH receptor, TRα1, to bind to EZH2 and repress expression of NeuroD1, a transcription factor that drives tumor cell differentiation. Increased TH reverses EZH2-mediated repression of NeuroD1 by abrogating the binding of EZH2 and TRα1, thereby stimulating tumor cell differentiation and reducing MB growth. Importantly, TH-induced differentiation of tumor cells is not restricted by the molecular subgroup of MB, suggesting that TH can be used to broadly treat MB subgroups. These findings establish an unprecedented association between TH signaling and MB pathogenicity, providing solid evidence for TH as a promising modality for MB treatment.

Original languageEnglish
Pages (from-to)1434-1449.e5
JournalCancer Cell
Volume42
Issue number8
DOIs
StatePublished - Aug 12 2024

Keywords

  • EZH2
  • NeuroD1
  • TRα1
  • differentiation therapy
  • epigenetic regulation
  • hypothyroidism
  • medulloblastoma
  • terminal differentiation
  • thyroid hormone
  • Cell Differentiation/drug effects
  • Humans
  • Gene Expression Regulation, Neoplastic/drug effects
  • Thyroid Hormones/metabolism
  • Signal Transduction/drug effects
  • Disease Progression
  • Enhancer of Zeste Homolog 2 Protein/metabolism
  • Basic Helix-Loop-Helix Transcription Factors/metabolism
  • Animals
  • Cell Line, Tumor
  • Medulloblastoma/pathology
  • Mice
  • Cerebellar Neoplasms/pathology
  • Thyroid Hormone Receptors alpha/metabolism

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