3D Self-Organized Microvascular Model of the Human Blood-Brain Barrier with Endothelial Cells, Pericytes and Astrocytes
By M. Campisi, Yoojin Shin, Tatsuya Osaki, Cynthia Hajal, V. Chiono, Roger D. Kamm. Biomaterials, 2018
613 citations recorded by the source corpus.
The blood-brain barrier (BBB) regulates molecular trafficking, protects against pathogens, and prevents efficient drug delivery to the brain. Models to date failed to reproduce the human anatomical complexity of brain barriers, contributing to misleading results in clinical trials. To overcome these limitations, a novel 3-dimensional BBB microvascular network model was developed via vasculogenesis to accurately replicate the in vivo neurovascular organization. This microfluidic system includes human induced pluripotent stem cell-derived endothelial cells, brain pericytes, and astrocytes as self-assembled vascular networks in fibrin gel. Gene expression of membrane transporters, tight junction and extracellular matrix proteins, was consistent with computational analysis of geometrical structures and quantitative immunocytochemistry, indicating BBB maturation and microenvironment remodeling. Confocal microscopy validated microvessel-pericyte/astrocyte dynamic contact-interactions. The BBB model exhibited perfusable and selective microvasculature, with permeability lower than conventional in vitro models, and similar to in vivo measurements in rat brain. This robust and physiologically relevant BBB microvascular model offers an innovative and valuable platform for drug discovery to predict neuro-therapeutic transport efficacy in pre-clinical applications as well as recapitulate patient-specific and pathological neurovascular functions in neurodegenerative disease.
Subfields: Biomedical Engineering, Materials Chemistry, Neurology
View Paper: https://www.semanticscholar.org/paper/15fa31bcf893e09553e1c9bc1ea02aeb55c74db1
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In Biomedical Engineering
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- Tumor microenvironment complexity and therapeutic implications at a glance (2020, background): “Meanwhile, the mediators for such contacts can be soluble factors (chemokines/ cytokines/growth factors, etc.), or those that enable horizontal genetic/biomaterial transfer including cfDNA, apoptotic bodies, CTCs, and exosomes BBB similar to those of the rat brain, with perfusable and selective micr”