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Angelman Syndrome.

Seth S Margolis1, Gabrielle L Sell, Mark A Zbinden

  • 1Department of Biological Chemistry, The Johns Hopkins University School of Medicine, 725 N. Wolfe St., Baltimore, MD, 21205, USA, smargol7@jhmi.edu.

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|June 5, 2015
PubMed
Summary
This summary is machine-generated.

Angelman syndrome (AS) is a neurodevelopmental disorder caused by a nonfunctional UBE3A gene. Research is exploring treatments to restore UBE3A function and improve outcomes for individuals with AS.

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Area of Science:

  • Genetics
  • Neuroscience
  • Molecular Biology

Background:

  • Angelman syndrome (AS) is a rare neurodevelopmental disorder.
  • It is characterized by severe cognitive disability, motor dysfunction, speech impairment, hyperactivity, and seizures.
  • AS results from the loss of function of the maternally inherited UBE3A gene, which encodes an E3 ubiquitin ligase.

Purpose of the Study:

  • To review the clinical and genetic aspects of Angelman syndrome.
  • To summarize the molecular and cellular underpinnings of AS.
  • To discuss current and potential treatment strategies for AS.

Main Methods:

  • Review of existing literature on Angelman syndrome.
  • Analysis of genetic and molecular mechanisms underlying AS.
  • Examination of findings from AS mouse models.

Main Results:

  • Four mechanisms cause nonfunctional maternal UBE3A, with 15q11-q13 deletion being most common.
  • AS mouse models show functional, not morphological, brain defects, impacting learning and neural circuit maturation.
  • UBE3A deficiency is crucial for synaptic development, but human pathophysiology remains unclear.

Conclusions:

  • UBE3A plays a critical role in synaptic development and neurodevelopment.
  • While human pathophysiology is not fully understood, research on AS mouse models shows promise for treatment.
  • Restoring UBE3A function offers hope for effective therapeutic strategies for Angelman syndrome.