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Published on: October 17, 2025
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Altered Primary Somatosensory Neuron Development in a Pten Heterozygous Model for Autism Spectrum Disorder.
Alejandra Fernandez1, Nick Sarn2, Charis Eng2,3,4
1Vollum Institute, Oregon Health & Science University, Portland, Oregon, USA.
Summary
Precise PTEN levels are crucial for proper somatosensory development in autism spectrum disorder (ASD). This study reveals how PTEN mutations impact sensory neuron development, offering insights into ASD
Area of Science:
- Neuroscience
- Developmental Biology
- Genetics
Background:
- Autism spectrum disorder (ASD) involves sensory processing deficits.
- Cellular mechanisms of sensory abnormalities in ASD remain unclear.
- Dorsal root ganglia (DRG) neurons are implicated in ASD sensory issues.
Purpose of the Study:
- Investigate the developmental emergence of altered sensory processing in ASD.
- Examine the role of PTEN in DRG neuron development and function.
- Determine if sensory phenotypes are conserved across different ASD models.
Main Methods:
- Utilized Pten heterozygous mice (PtenHet) as a model for syndromic ASD.
- Performed transcriptomic and in vivo analyses of DRG neurons.
- Examined mice with an ASD-associated PTEN mutation (PtenY69H).
Main Results:
- PtenHet mice exhibited altered responses to sensory stimuli.
- Transcriptomic analysis revealed changes in DRG neuron subtype markers during development.
- PTEN dysregulation affected downstream signaling pathways.
- PtenY69H mice showed similar alterations in somatosensory neuron markers.
Conclusions:
- Specific PTEN levels are essential for normal somatosensory development.
- Findings provide molecular and cellular insights into sensory abnormalities in syndromic ASD.
- This research illuminates the basis of sensory processing differences in ASD models.
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