CACNA1A haploinsufficiency leads to reduced synaptic function and increased intrinsic excitability - Takeaways - MDSpire

CACNA1A haploinsufficiency leads to reduced synaptic function and increased intrinsic excitability

  • By

  • Marina P Hommersom

  • Nina Doorn

  • Sofía Puvogel

  • Elly I Lewerissa

  • Annika Mordelt

  • Ummi Ciptasari

  • Franziska Kampshoff

  • Lieke Dillen

  • Ellen van Beusekom

  • Astrid Oudakker

  • Naoki Kogo

  • Amalia M Dolga

  • Monica Frega

  • Dirk Schubert

  • Bart P C van de Warrenburg

  • Nael Nadif Kasri

  • Hans van Bokhoven

  • October 26, 2024

  • 0 min

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  • 1

    CACNA1A haploinsufficiency leads to a variable clinical phenotype, including cerebellar ataxia, epilepsy, and intellectual disability.

  • 2

    The study utilized isogenic induced pluripotent stem cells to model the effects of CACNA1A loss-of-function variants on neuronal networks.

  • 3

    Altered network synchronization and synaptic deficits were observed in CACNA1A+/− neurons, characterized by increased GluA2-lacking AMPA receptors.

  • 4

    Increased intrinsic neuronal excitability was linked to reduced potassium channel function and expression in CACNA1A haploinsufficient networks.

  • 5

    Therapeutic modulation of calcium-activated potassium channels showed potential to reverse electrophysiological deficits in CACNA1A+/− networks.

Original Source(s)

CACNA1A haploinsufficiency leads to reduced synaptic function and increased intrinsic excitability

  • by Marina P Hommersom, Nina Doorn, Sofía Puvogel, Elly I Lewerissa, Annika Mordelt, Ummi Ciptasari, Franziska Kampshoff, Lieke Dillen, Ellen van Beusekom, Astrid Oudakker, Naoki Kogo, Amalia M Dolga, Monica Frega, Dirk Schubert, Bart P C van de Warrenburg, Nael Nadif Kasri, Hans van Bokhoven

  • October 26, 2024

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