G6PD deficiency in brain induces schizophrenia-like behaviors and synaptic dysfunction

Area of Science:

• Neuroscience
• Biochemistry
• Genetics

Background:

• Schizophrenia involves aberrant brain development with unknown causes.
• The pentose phosphate pathway (PPP) enzyme Glucose-6-phosphate dehydrogenase (G6PD) is crucial for cellular redox balance.
• Oxidative stress linked to PPP dysfunction is implicated in schizophrenia.

Purpose of the Study:

• To investigate the direct biological link between G6PD deficiency and schizophrenia.
• To elucidate the molecular mechanisms underlying G6PD's role in schizophrenia-like behaviors.

Main Methods:

• Generated brain-specific G6PD knockout mice.
• Performed proteomic analysis to identify changes in synaptic proteins.
• Assessed synaptic structure and function, including presynaptic vesicles and dendritic spines.

Main Results:

• Brain-specific G6PD knockout mice exhibited schizophrenia-like behaviors.
• Proteomic analysis revealed altered synaptic protein expression in knockout mice.
• Synaptic impairments, including reduced presynaptic vesicles and diminished dendritic spines, were observed.

Conclusions:

• G6PD deficiency directly contributes to schizophrenia-like behaviors via synaptic disruption.
• G6PD is a critical regulator of synaptic homeostasis.
• G6PD represents a potential therapeutic target for schizophrenia treatment.