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Pharmacological rescue in patient iPSC and mouse models with a rare DISC1 mutation
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Pharmacological rescue in patient iPSC and mouse models with a rare DISC1 mutation
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Journal Article
Pharmacological rescue in patient iPSC and mouse models with a rare DISC1 mutation
2021
Overview
We previously identified a causal link between a rare patient mutation in DISC1 (disrupted-in-schizophrenia 1) and synaptic deficits in cortical neurons differentiated from isogenic patient-derived induced pluripotent stem cells (iPSCs). Here we find that transcripts related to phosphodiesterase 4 (PDE4) signaling are significantly elevated in human cortical neurons differentiated from iPSCs with the DISC1 mutation and that inhibition of PDE4 or activation of the cAMP signaling pathway functionally rescues synaptic deficits. We further generated a knock-in mouse line harboring the same patient mutation in the Disc1 gene. Heterozygous Disc1 mutant mice exhibit elevated levels of PDE4s and synaptic abnormalities in the brain, and social and cognitive behavioral deficits. Pharmacological inhibition of the PDE4 signaling pathway rescues these synaptic, social and cognitive behavioral abnormalities. Our study shows that patient-derived isogenic iPSC and humanized mouse disease models are integral and complementary for translational studies with a better understanding of underlying molecular mechanisms.
Previous work has shown in iPSC derived neurons that synaptic impairments are associated with a 4bp DISC1 deletion. Here the authors demonstrate a role for the PDE4 signalling pathway in these synaptic impairments.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
/ 13/100
/ 13/106
/ 13/51
/ 13/95
/ 14/19
/ 64/60
/ Animals
/ Behavior, Animal - drug effects
/ Cerebral Cortex - physiology
/ Cyclic Nucleotide Phosphodiesterases, Type 4 - genetics
/ Female
/ Humanities and Social Sciences
/ Humans
/ Induced Pluripotent Stem Cells - drug effects
/ Inhibitory postsynaptic potentials
/ Kinases
/ Male
/ Mice
/ Mutation
/ Nerve Tissue Proteins - genetics
/ Neurons
/ Phosphodiesterase 4 Inhibitors - pharmacology
/ Science
