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Related Experiment Video

Updated: Dec 15, 2025

Modeling Neuronal Death and Degeneration in Mouse Primary Cerebellar Granule Neurons

Modeling Neuronal Death and Degeneration in Mouse Primary Cerebellar Granule Neurons

Published on: November 6, 2017

Clustered gamma-protocadherins regulate cortical interneuron programmed cell death.

Walter R Mancia Leon¹, Julien Spatazza¹, Benjamin Rakela²

¹Department of Neurological Surgery and The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, United States.

|July 8, 2020

Summary

This summary is machine-generated.

Loss of gamma protocadherins (Pcdhg) significantly increases programmed cell death in cortical inhibitory interneurons (cINs). This finding highlights Pcdhg

Keywords:

MGE developmental biology mouse neuroscience programmed cell death protocadherins transplantation

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Area of Science:

Neuroscience
Developmental Biology
Genetics

Background:

Cortical function relies on a balance between inhibitory and excitatory signaling.
Cortical inhibitory interneurons (cINs) originate in the ventral forebrain and migrate to the cortex.
Programmed cell death regulates the number of cINs in the developing cortex.

Purpose of the Study:

To investigate the role of clustered protocadherins (Pcdhgs) in regulating cIN survival.
To determine if Pcdhg deficiency affects cIN cell death during development.

Main Methods:

Utilized mouse models with targeted gene deletions for Pcdhg clusters.
Performed electrophysiological and morphological analyses of cINs.
Employed co-transplantation experiments to assess cell-cell interactions and density effects.

Main Results:

Loss of gamma-clustered Pcdhgs, but not alpha or beta clusters, led to a significant increase in BAX-dependent cIN cell death.
Electrophysiological and morphological properties of Pcdhg-deficient and wild-type cINs were similar during the cell death period.
Co-transplantation reduced mutant cIN survival, indicating an intrinsic role for Pcdhgs.

Conclusions:

Gamma-clustered Pcdhgs are critical regulators of cIN survival during programmed cell death.
Specific isoforms, including Pcdhgc3, Pcdhgc4, and Pcdhgc5, are implicated in this process.
Pcdhgs play a crucial role in ensuring appropriate cIN numbers for cortical development.