Related Experiment Video
Updated: Jun 22, 2025

Author Spotlight: A Personalized Approach Towards Investigating Alzheimer's Disease Using an In Vitro Blood-Brain Barrier Model
Published on: October 20, 2023
The Blood-Brain Barrier: Composition, Properties, and Roles in Brain Health.
Baptiste Lacoste1,2,3, Alexandre Prat4, Moises Freitas-Andrade5
1Ottawa Hospital Research Institute, Neuroscience Program, Ottawa, Ontario K1H 8M5, Canada blacoste@uottawa.ca Chenghua_Gu@hms.harvard.edu.
The blood-brain barrier (BBB) regulates brain homeostasis and neuronal function. Understanding its cellular interactions is key to treating neurological diseases.
Area of Science:
- Neuroscience
- Vascular Biology
- Cell Biology
Background:
- Blood vessels supply oxygen and nutrients, but CNS vessels form a unique blood-brain barrier (BBB).
- The BBB tightly regulates substance movement, maintaining central nervous system (CNS) homeostasis essential for neuronal function.
- BBB dysfunction is implicated in neurological disease pathogenesis.
Purpose of the Study:
- To elucidate the cellular interactions governing blood-brain barrier properties.
- To understand the regulation of CNS homeostasis and its implications in neurological diseases.
Main Methods:
- Investigated the coordinated regulation of BBB properties by brain endothelial cells (ECs).
- Examined interactions between vascular, perivascular, immune, and neural cells.
- Focused on physical, transport, and metabolic characteristics of ECs.
Main Results:
- BBB properties are dynamically regulated by complex cell-cell interactions.
- Brain endothelial cells (ECs) are central to maintaining barrier integrity.
- Interactions involving multiple cell types dictate barrier function.
Conclusions:
- Understanding cellular crosstalk is crucial for comprehending brain function in health and disease.
- Targeting these cellular interactions may offer therapeutic strategies for neurological disorders.
- Further research into BBB regulation by cellular communication is warranted.
More Related Videos
Related Concept Videos
The Blood-brain Barrier
Physiological Barriers
The blood endothelial barrier is the most porous of these. It allows all small ionized, un-ionized, and lipophilic molecules to pass through the endothelial lining into the interstitial space...
Factors Affecting Drug Distribution: Physiological Barriers
The capillary endothelial barrier allows only smaller molecules below 600 Da (Daltons) to pass through. It also restricts drugs like heparin that are bound to blood components, limiting their movement within the bloodstream.
The...
Cerebrospinal Fluid
CSF Production
CSF is produced mainly in the choroid plexus, a network of capillaries and ependymal cells located within the ventricular system of the brain....
Characteristics and Functions of Blood
The primary function of blood is to transport oxygen and carbon dioxide between tissues and the lungs. Oxygenated blood is bright red, while oxygen-depleted blood is darker. It also carries...
Capillaries and Their Types

