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The RhoB p.S73F mutation leads to cerebral palsy through dysregulation of lipid homeostasis

Xinyu Wu1, Ruonan Liu1, Zhongtian Zhang2,3,4,5,6,7

  • 1State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, and College of Veterinary Medicine, Jilin University, Changchun, 130062, China.

EMBO Molecular Medicine
|July 30, 2024
PubMed

Insights

A new rabbit model mimics human cerebral palsy (CP) caused by the RhoB p.S73F mutation. This genetic mutation alters lipid metabolism, leading to brain damage and CP symptoms.

Area of Science:

  • Neuroscience
  • Genetics
  • Developmental Biology

Background:

  • Cerebral palsy (CP) is a major global health concern.
  • A de novo mutation in RhoB (p.S73F) has been linked to CP.
  • The underlying mechanism of RhoB-associated CP remains elusive.

Purpose of the Study:

  • To establish a mammalian model for genetic CP.
  • To elucidate the pathogenic mechanism of the RhoB p.S73F mutation.
  • To identify potential therapeutic targets for CP.

Main Methods:

  • Generated a rabbit model of the human RhoB p.S73F mutation using the SpG-BE4max system.
  • Observed CP-like symptoms including periventricular leukomalacia and spastic-dystonic diplegia.
  • Investigated the molecular pathways affected by the mutation.

Main Results:

  • The rabbit model exhibited key features of human CP.
  • RhoB p.S73F mutation activates ACAT1 via the LYN pathway.
  • Altered lipid metabolism due to the mutation contributes to neuronal and white matter damage.

Conclusions:

  • This study presents the first mammalian model for RhoB-related genetic CP.
  • Provides insights into the link between RhoB, lipid metabolism, and CP.
  • Identifies novel therapeutic targets for CP treatment.

Keywords:
Cerebral PalsyLipid MetabolismNeuromotor ImpairmentRabbit ModelRhoB

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