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Related Concept Videos

Synaptic Signaling01:12

Synaptic Signaling

Neurons communicate at synapses, or junctions, to excite or inhibit the activity of other neurons or target cells, such as muscles. Synapses may be chemical or electrical.
The Synapse02:47

The Synapse

Neurons communicate with one another by passing on their electrical signals to other neurons. A synapse is the location where two neurons meet to exchange signals. At the synapse, the neuron that sends the signal is called the presynaptic cell, while the neuron that receives the message is called the postsynaptic cell. Note that most neurons can be both presynaptic and postsynaptic, as they both transmit and receive information.

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Microtransplantation of Synaptic Membranes to Reactivate Human Synaptic Receptors for Functional Studies
10:08

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Published on: July 20, 2022

Synapse microarray identification of small molecules that enhance synaptogenesis.

Peng Shi1, Mark A Scott, Balaram Ghosh

  • 1Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.

Nature Communications
|October 27, 2011
PubMed
Summary

A new synapse microarray technology enables ultra-sensitive, high-throughput screening of synaptogenesis. This method identified novel histone deacetylase (HDAC) inhibitors that enhance synaptic connections, offering potential new therapeutics for brain disorders.

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Area of Science:

  • Neuroscience
  • Biotechnology
  • Drug Discovery

Background:

  • Synaptic dysfunction is a hallmark of numerous brain diseases.
  • Developing effective therapeutics requires efficient methods for screening compounds that modulate synaptic function.
  • Current synapse assays lack the sensitivity and throughput needed for large-scale drug discovery.

Purpose of the Study:

  • To develop an ultra-sensitive, high-throughput platform for quantitative screening of synaptogenesis.
  • To identify novel compounds that promote synapse formation.
  • To establish structure-activity relationships for new therapeutic agents targeting synaptogenesis.

Main Methods:

  • Development of a 'synapse microarray' technology for precise positioning of cells expressing synaptic proteins.
  • Utilizing the microarray for high-throughput screening of a chemical library.
  • Assessing synaptogenesis induction and quantifying drug effects on neuroligin-1-mediated synapse formation.

Main Results:

  • The synapse microarray demonstrated a tenfold increase in sensitivity and an order of magnitude decrease in assay time compared to traditional methods.
  • Screening identified novel class-I histone deacetylase (HDAC) inhibitors that significantly enhance neuroligin-1-induced synaptogenesis.
  • A structure-activity relationship for potent HDAC inhibitors was elucidated.

Conclusions:

  • The developed synapse microarray is a powerful tool for ultra-sensitive, high-throughput screening of synaptogenesis.
  • Novel HDAC inhibitors show therapeutic potential for treating brain disorders characterized by synaptic dysfunction.
  • The findings provide a foundation for designing improved therapeutics targeting HDACs to promote synaptic health.