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Assaying Circuit Specific Regulation of Adult Hippocampal Neural Precursor Cells
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Exosomes regulate neurogenesis and circuit assembly.

Pranav Sharma1,2, Pinar Mesci3,4, Cassiano Carromeu3,4

  • 1Neuroscience Department, The Scripps Research Institute, La Jolla, CA 92093.

Proceedings of the National Academy of Sciences of the United States of America
|July 20, 2019
PubMed
Summary
This summary is machine-generated.

Neural exosomes regulate brain development by carrying essential signaling molecules. Exosomes from healthy cells promote neural circuit formation, unlike those from cells with MECP2 mutations.

Keywords:
Rett syndromeexosomesextracellular vesicleneuronal developmentsynaptogenesis

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Area of Science:

  • Neuroscience
  • Cell Biology
  • Developmental Biology

Background:

  • Exosomes mediate intercellular communication.
  • Neural exosomes' role in circuit development is under investigation.

Purpose of the Study:

  • To determine if neural exosomes regulate neural circuit development.
  • To investigate the impact of MECP2 deficiency on exosome function.

Main Methods:

  • Exosome treatment on developing neural cultures and P4 mouse brains.
  • Quantitative proteomic analysis of exosomes.
  • Comparison of exosomes from MECP2-deficient and control neural cultures.

Main Results:

  • Exosome treatment enhanced neural proliferation in vitro and in vivo.
  • Control exosomes contained signaling networks crucial for neural development.
  • Control exosomes rescued deficits in neural proliferation, differentiation, synaptogenesis, and firing in MECP2-knockdown cultures.

Conclusions:

  • Neural exosomes contain signaling information vital for neural circuit development.
  • MECP2 deficiency impairs the neuro-regulatory capacity of exosomes.
  • Exosomes represent a potential therapeutic avenue for neurodevelopmental disorders.