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Autism spectrum disorder (ASD) is a heritable, common neurodevelopmental disorder with diverse genetic causes. Several studies have implicated protein synthesis as one among several of its potential convergent mechanisms. We originally identified Janus kinase and microtubule-interacting protein 1 (JAKMIP1) as differentially expressed in patients with distinct syndromic forms of ASD, fragile X syndrome, and 15q duplication syndrome. Here, we provide multiple lines of evidence that JAKMIP1 is a component of polyribosomes and an RNP translational regulatory complex that includes fragile X mental retardation protein, DEAD box helicase 5, and the poly(A) binding protein cytoplasmic 1. JAKMIP1 loss dysregulates neuronal translation during synaptic development, affecting glutamatergic NMDAR signaling, and results in social deficits, stereotyped activity, abnormal postnatal vocalizations, and other autistic-like behaviors in the mouse. These findings define an important and novel role for JAKMIP1 in neural development and further highlight pathways regulating mRNA translation during synaptogenesis in the genesis of neurodevelopmental disorders.

Original publication

DOI

10.1016/j.neuron.2015.10.031

Type

Journal article

Journal

Neuron

Publication Date

16/12/2015

Volume

88

Pages

1173 - 1191

Keywords

Adaptor Proteins, Signal Transducing, Animals, Autism Spectrum Disorder, Gene Regulatory Networks, Male, Mice, Mice, Inbred C57BL, Mice, Knockout, Neurons, Protein Biosynthesis, Proteomics, RNA-Binding Proteins, Synapses