Intermittent fasting uncovers and rescues cognitive phenotypes in PTEN neuronal haploinsufficient mice

Area of Science:

• Neuroscience
• Genetics
• Metabolic research

Background:

• Phosphatase and tensin homolog (PTEN) is vital for cell growth, survival, and central nervous system (CNS) development.
• PTEN dysfunction is linked to cognitive deficits, impaired synaptic plasticity, and autism spectrum disorder (ASD).

Purpose of the Study:

• To investigate the effects of intermittent fasting (IF) on behavioral alterations in neuronal Pten haploinsufficient mice.
• To determine if IF can rescue memory impairments associated with Pten haploinsufficiency.

Main Methods:

• Neuronal Pten haploinsufficient male mice were subjected to long-term intermittent fasting (IF).
• Behavioral tests evaluated exploratory, anxiety, and learning and memory functions, including spatial and contextual fear memory.

Main Results:

• While spatial memory remained unaffected, Pten mutant mice exhibited impaired contextual fear memory.
• Intermittent fasting (IF) effectively rescued the contextual fear memory deficit in these mice.
• IF also uncovered previously hidden behavioral phenotypes in the Pten haploinsufficiency model.

Conclusions:

• Intermittent fasting (IF) can rescue specific memory deficits in a mouse model of Pten haploinsufficiency.
• IF plays a crucial role in revealing the full spectrum of behavioral phenotypes associated with Pten mutations.
• These findings highlight the potential of metabolic interventions like IF in neurological and neurodevelopmental contexts.