Assessing blood-brain barrier function using in vitro assays

Joseph Bressler, Katherine Clark, Cliona O'Driscoll

Research output: ResearchChapter

Abstract

The impermeability of the blood-brain barrier (BBB) is due to a number of properties including tight junctions on adjoining endothelial cells, absence of pinocytic vesicles, and expression of multidrug transporters. Although the permeability of many chemicals can be predicted by their polarity, or oil/water partition coefficient, many lipophilic chemicals are not permeable because of multidrug transporters at the luminal and abluminal membranes. In contrast, many nutrients, which are usually polar, cross the BBB more readily than predicted by their oil/water partition coefficients due to the expression of specific nutrient transporters. In vitro models are being developed because rodent models are of low input and relatively expensive. Isolated brain microvessels and cell culture models each offers certain advantages and disadvantages. Isolated brain microvessels are useful in measuring multidrug drug transporters and tight junction integrity, whereas cell culture models allow the investigator to measure directional transport and can be genetically manipulated. In this chapter, we describe how to isolate large batches of brain microvessels from freshly slaughtered cows. The different steps in the isolation procedure include density gradient centrifugations and filtering. Purity is determined microscopically and by marker enzymes. Permeability is assessed by measuring the uptake of fluorescein-labeled dextran in an assay that has been optimized to have a large dynamic range and low inter-day variability. We also describe how to evaluate transendothelial cell electrical resistance and paracellular transport in cell culture models.

LanguageEnglish (US)
Title of host publicationMethods in Molecular Biology
PublisherHumana Press Inc.
Pages67-79
Number of pages13
Volume1066
ISBN (Print)9781627036030
DOIs
StatePublished - 2013

Publication series

NameMethods in Molecular Biology
Volume1066
ISSN (Print)10643745

Fingerprint

Microvessels
Blood-Brain Barrier
Cell Culture Techniques
Brain
In Vitro Techniques
Tight Junctions
Permeability
Oils
Food
Water
Density Gradient Centrifugation
Electric Impedance
Rodentia
Endothelial Cells
Research Personnel
Membranes
Enzymes
Pharmaceutical Preparations
fluorescein-dextran

Keywords

  • Blood-brain barrier
  • Electrical resistance
  • Microvessels
  • Tight junctions
  • Transporters

ASJC Scopus subject areas

  • Molecular Biology
  • Genetics

Cite this

Bressler, J., Clark, K., & O'Driscoll, C. (2013). Assessing blood-brain barrier function using in vitro assays. In Methods in Molecular Biology (Vol. 1066, pp. 67-79). (Methods in Molecular Biology; Vol. 1066). Humana Press Inc.. DOI: 10.1007/978-1-62703-604-7_6

Assessing blood-brain barrier function using in vitro assays. / Bressler, Joseph; Clark, Katherine; O'Driscoll, Cliona.

Methods in Molecular Biology. Vol. 1066 Humana Press Inc., 2013. p. 67-79 (Methods in Molecular Biology; Vol. 1066).

Research output: ResearchChapter

Bressler, J, Clark, K & O'Driscoll, C 2013, Assessing blood-brain barrier function using in vitro assays. in Methods in Molecular Biology. vol. 1066, Methods in Molecular Biology, vol. 1066, Humana Press Inc., pp. 67-79. DOI: 10.1007/978-1-62703-604-7_6
Bressler J, Clark K, O'Driscoll C. Assessing blood-brain barrier function using in vitro assays. In Methods in Molecular Biology. Vol. 1066. Humana Press Inc.2013. p. 67-79. (Methods in Molecular Biology). Available from, DOI: 10.1007/978-1-62703-604-7_6
Bressler, Joseph ; Clark, Katherine ; O'Driscoll, Cliona. / Assessing blood-brain barrier function using in vitro assays. Methods in Molecular Biology. Vol. 1066 Humana Press Inc., 2013. pp. 67-79 (Methods in Molecular Biology).
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