Profiling parvalbumin interneurons using iPSC: challenges and perspectives for Autism Spectrum Disorder (ASD)

Area of Science:

• Neuroscience
• Developmental Biology
• Genetics

Background:

• Autism spectrum disorders (ASD) are complex neurodevelopmental conditions with multifactorial causes.
• Altered function of parvalbumin (PV)-expressing inhibitory interneurons is increasingly implicated in various forms of ASD.
• These PVALB neurons are critical for regulating cortical network activity, including gamma rhythms essential for attention and sensory processing.

Purpose of the Study:

• To explore strategies for understanding the role of PVALB neurons in ASD.
• To leverage induced pluripotent stem cells (iPSC) and genome-editing technologies for mechanistic insights.
• To investigate PVALB neuron function in neurodevelopmental contexts ex vivo.

Main Methods:

• Utilizing induced pluripotent stem cells (iPSC) derived from healthy donors and ASD patients.
• Employing genome-editing techniques like CRISPR/Cas9 for targeted genetic modifications.
• Developing methods for tagging and tracking PVALB neurons from precursor to differentiated stages.

Main Results:

• iPSC technology enables the generation of human PVALB neurons in vitro.
• Tagging PVALB neurons facilitates the study of their development and function.
• This approach allows for the investigation of PVALB neuron alterations in ASD models.

Conclusions:

• iPSC-based models combined with advanced genetic tools offer a powerful platform to study PVALB neuron dysfunction in ASD.
• Understanding PVALB neuron roles is crucial for developing targeted ASD therapies.
• Investigating neurodevelopment ex vivo using these methods holds promise for unraveling ASD pathogenesis.