A Simple Adaptable Blood-Brain Barrier Cell Model for Screening Matrix Metalloproteinase Inhibitor Functionality.

Area of Science:

• Neuroscience
• Cell Biology
• Biomedical Engineering

Background:

• The blood-brain barrier (BBB) regulates molecular transport but is disrupted in cerebral pathologies like stroke and vascular dementia.
• Disrupted BBB increases permeability, allowing neurotoxic molecules entry, with matrix metalloproteinases (MMPs) mediating further damage.
• MMP inhibition is a promising stroke therapy strategy, necessitating efficient screening methods.

Purpose of the Study:

• To develop and characterize a co-culture model of the blood-brain barrier.
• To evaluate the model's utility in studying the effects of MMPs and their inhibitors on BBB integrity.
• To provide a preclinical tool for assessing potential therapeutic agents for BBB-related disorders.

Main Methods:

• Co-culture of brain microvascular endothelial cells and astrocytes on a membrane insert with an artificial basement membrane.
• Assessment of barrier formation and integrity.
• Application of the model for testing MMPs and MMP inhibitors.

Main Results:

• The co-culture model successfully formed a functional barrier, approximating blood-brain barrier integrity.
• The model demonstrated its capability to evaluate the impact of MMPs on BBB physiology.
• The model showed effectiveness in assessing the effects of MMP inhibitors on BBB pathophysiology.

Conclusions:

• A co-culture model of the blood-brain barrier was successfully established.
• This model serves as a valuable tool for studying BBB dysfunction and evaluating MMP inhibitors.
• The model offers a rapid, effective, and non-animal-based system for preclinical assessment of stroke therapies.