In a mouse model of fragile X syndrome, Emily Osterweil and her colleagues show that excessive protein synthesis drives a pathological compensatory rise in protein degradation (by the ubiquitin proteasome system), which can be targeted to correct various phenotypes including audiogenic seizures.
Highlights of SFARI-funded papers, selected by the SFARI science team.
A study by Caroline Robertson and her colleagues found that reduced social attention was not a static omnipresent characteristic of autism; rather, it was magnified only under certain real-world conditions where sensory processing demands were high.
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Elise Robinson and colleagues identified a large genomic region — chromosome 16p — where a rare 16p11.2 variant associated with autism functionally converges with common polygenic variation across 16p. Both rare and common genetic variation at 16p decreased expression of neuronally expressed genes, with relevance for increasing autism risk.
Studies by two different research teams — one led by Ethan Greenblatt and the other by Emily Osterweil — both suggest that FXS cells under-synthesize large proteins, findings that suggest a new point of view on a fundamental problem.
Genevieve Konopka and colleagues coupled brain imaging with measures of gene expression to reveal that gene expression patterns in the cortex that typically underlie functional brain activity in neurotypical individuals are affected in people with autism.
Gina Turrigiano and colleagues showed that the phosphorylation state of the autism-associated synaptic scaffold protein Shank3 can bias synapses toward upward or downward homeostatic plasticity.
Vinod Menon and colleagues showed that a subregion of the auditory cortex decodes emotional cues in a communication partner’s voice and that this predicts social communication abilities in children.
Joshua K. Hartshorne, Stefano Anzellotti and colleagues used machine learning to disentangle variations in neuroanatomy that are specific to autism from variations common to the general population.
Catherine Dulac and her collaborators identified a population of cells in the hypothalamus that generate fever and influence the activity of brain areas associated with behavior during sickness, with implications for the effects of fever on social behavior in autism.
So Hyun Kim, Catherine Lord and colleagues developed a new telehealth approach to autism assessment — the Brief Observation of Symptoms of Autism (BOSA) — for use during COVID-19 and beyond.
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