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Master transcription regulators are regulatory proteins that are predominantly responsible for regulating the expression of multiple genes. Often these genes work in concert to drive a  complex process. Activation of a master transcription regulator can lead to a cascade of transcriptional activation necessary for that outcome. These regulators can directly bind to the regulatory sequences of the various genes involved, or they can indirectly regulate transcription by binding to regulatory...
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Related Experiment Video

Updated: Mar 1, 2026

Author Spotlight: Tracing the Ferroptotic Signatures and Cell Death Dynamics in Medulloblastoma for Advanced Therapeutics
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METTL16 Modulates GPX4 Expression to Regulate Chondrocyte Ferroptosis.

Li He1, Xing Tong2, Ming Yang2

  • 1Department of Child Healthcare, The Affiliated Children's Hospital of Xi'an Jiaotong University (Xi'an Children's Hospital), 710003 Xi'an, Shaanxi, China.

Frontiers in Bioscience (Landmark Edition)
|February 28, 2026
PubMed
Summary

METTL16 enhances bone growth in achondroplasia (ACH) by boosting chondrocyte proliferation and reducing ferroptosis. This epigenetic regulator targets GPX4 mRNA, offering a potential therapeutic strategy for ACH.

Keywords:
N6-methyladenosineachondroplasiachondrocyteferroptosis

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Area of Science:

  • Epigenetics
  • Molecular Biology
  • Skeletal Dysplasias

Background:

  • Achondroplasia (ACH) is a genetic disorder causing disproportionate short stature, linked to fibroblast growth factor receptor 3 (FGFR3) mutations.
  • N6-methyladenosine (m6A) RNA modification influences mRNA stability and translation.
  • The role of METTL16, an m6A methyltransferase, in ACH pathophysiology was investigated.

Purpose of the Study:

  • To explore the epigenetic regulatory function of METTL16 in achondroplasia.
  • To investigate the impact of METTL16 on chondrocyte function and ferroptosis in ACH.
  • To elucidate the molecular mechanism underlying METTL16's effect on bone development in ACH.

Main Methods:

  • Generated an achondroplasia mouse model (Fgfr3ach).
  • Analyzed chondrocyte proliferation, viability, and ferroptosis markers (Fe2+, MDA, GSH).
  • Assessed bone structure (BMD, BV/TV, TbN, TbTh), gene/protein expression (qPCR, Western blot), and m6A modification levels.

Main Results:

  • METTL16 overexpression improved bone chondrogenesis and chondrocyte proliferation in the ACH model.
  • METTL16 reduced ferroptosis in vitro and in vivo by increasing glutathione peroxidase 4 (GPX4) expression.
  • METTL16 enhanced m6A modification of GPX4 mRNA, suppressing its degradation; GPX4 depletion negated METTL16's effects.

Conclusions:

  • METTL16 overexpression promotes bone growth and alleviates chondrocyte ferroptosis in ACH.
  • The METTL16/GPX4 axis, via m6A modification of GPX4 mRNA, is a key mechanism.
  • The METTL16/GPX4 pathway presents a potential therapeutic target for achondroplasia treatment.