Analysis of NDNF and SLC1A2 gene expression in the dorsolateral prefrontal cortex of individuals with autism

TL;DR

This study explores gene expression differences in the brain of individuals with autism, focusing on two genes linked to brain function and inflammation.

Contribution

The study identifies altered SLC1A2 gene expression in autism, suggesting a potential link to neuroinflammation.

Findings

SLC1A2 expression was significantly increased in individuals with autism.

NDNF expression showed a non-significant trend toward lower levels in autism.

Neuronal density was similar between autism and control groups.

Abstract

This study investigated the expression of NDNF and SLC1A2 in the dorsolateral prefrontal cortex of individuals with Autism Spectrum Disorder (ASD), a region linked to executive functions, emotional regulation, social skills, and sensory processing.

Using data from the Allen Human Brain Atlas – Autism Study, 17 post-mortem cases (ASD: 9; controls: 8; ages 2–14) were analyzed with in situ hybridization and Nissl staining. Histological images were processed with FIJI-ImageJ and Ilastik software.

No significant differences in NDNF expression were observed, though a trend toward lower levels in ASD was noted. In contrast, SLC1A2 expression was significantly increased in ASD and showed age-related growth, possibly reflecting neuroinflammatory processes. Nissl staining indicated similar neuronal density between groups, suggesting that gene expression changes may reflect functional alterations rather than cell number.

These results highlight complex neurogenesis alterations in ASD and underscore the need for further research to identify biomarkers and potential therapeutic targets.

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