Peptide Family Promotes Brain Cell Rejuvenation and Improved Cognition through Peripheral Delivery

Area of Science:

• Neuroscience
• Molecular Biology
• Biochemistry

Background:

• Folate receptor alpha (FRα) is predominantly expressed in neural cells.
• FRα ligands show potential for brain cell rejuvenation and cognitive enhancement.
• Targeting FRα may offer therapeutic strategies for age-related cognitive decline.

Purpose of the Study:

• To identify novel FRα-binding peptides using computational modeling.
• To investigate the mechanism of FRα-mediated gene expression and cellular effects.
• To assess the therapeutic potential of these peptides for cognitive function.

Main Methods:

• AlphaFold modeling to identify FRα-binding peptides.
• In vitro assays to study receptor binding and internalization.
• Analysis of gene expression changes in response to peptide treatment.
• Evaluation of cognitive function in aged mice following peptide administration.

Main Results:

• A novel family of FRα-binding peptides was identified.
• These peptides induce FRα internalization and nuclear transport.
• FRα acts as a transcription factor, upregulating genes linked to youthful phenotype and cognition.
• Peptides demonstrated blood-brain barrier permeability for peripheral administration.

Conclusions:

• FRα-targeting peptides can rejuvenate brain cells and enhance cognition.
• The identified peptides offer a promising therapeutic avenue for cognitive disorders.
• Blood-brain barrier permeability facilitates potential clinical applications.