一种基于猪脑内皮细胞的体外血脑屏障模型的改进方法

Overview

This protocol outlines an optimized method for establishing an in vitro blood-brain barrier (BBB) model using primary porcine brain endothelial cells (pBECs). The model demonstrates high reproducibility and tightness, making it suitable for drug discovery studies.

Key Study Components

Area of Science

• Neuroscience
• Cell Biology
• Pharmacology

Background

• The blood-brain barrier is crucial for protecting the brain from harmful substances.
• Understanding drug delivery and permeability across the BBB is essential for therapeutic development.
• Primary porcine brain endothelial cells provide a relevant model for studying BBB properties.
• High transendothelial electrical resistance (TEER) indicates a tight barrier.

Purpose of Study

• To purify and isolate primary porcine brain endothelial cells.
• To establish a reliable in vitro BBB model.
• To investigate drug delivery mechanisms and receptor trafficking.

Methods Used

• Brains are washed with PBS and meninges are removed.
• Gray matter is isolated and processed in DMEM/F-12.
• Initial fragmentation is achieved using a syringe.
• The model is assessed for TEER and permeability.

Main Results

• The protocol yields a high number of viable primary brain endothelial cells.
• The established BBB model exhibits high TEER values.
• Low permeability is observed, indicating a tight barrier.
• The model is suitable for studying drug transport and trafficking.

Conclusions

• This optimized protocol provides a robust method for BBB modeling.
• The model can facilitate research in drug delivery and BBB dynamics.
• High reproducibility makes it a valuable tool for future studies.

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