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Updated: May 8, 2026
A Simple and Reproducible Method to Prepare Membrane Samples from Freshly Isolated Rat Brain Microvessels
Published on: May 7, 2018
A simple method for isolating and culturing the rat brain microvascular endothelial cells.
Yang Liu1, Qiang Xue, Qing Tang
1College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China; College of Traditional Chinese Medicine and Pharmacology, Southwest University, Chongqing 400715, China; Chongqing Engineering Research Center for Pharmacological Evaluation, Chongqing 400715, China; Institute of Chinese Medicine, Southwest University, Chongqing 400715, China; Pharmacology of Chinese Materia Medica, TCM, Chongqing 400715, China.
Researchers developed a simple, cost-effective method to isolate high-purity brain microvascular endothelial cells (BMECs) from neonatal rats. This technique yields abundant cells without growth factors, offering a valuable tool for studying brain diseases and the blood-brain barrier.
Area of Science:
- Neuroscience
- Cell Biology
- Biomedical Engineering
Background:
- Brain microvascular endothelial cells (BMECs) are crucial for the blood-brain barrier and implicated in brain disease pathogenesis.
- Current methods for primary rat BMEC isolation suffer from low yield, contamination, high animal use, and expensive growth factors.
Purpose of the Study:
- To develop a simple, economical, and repeatable method for isolating high-purity rat BMECs.
- To provide a reliable cell model for cerebrovascular research.
Main Methods:
- Isolation of BMECs from neonatal rat cerebral cortexes.
- Cultivation without growth factors.
- Purity assessment using phenotypic markers (MDR, vWF, PECAM-1/CD31, ICAM) and microscopy.
- Identification of potential contaminants (astrocytes via GFAP, pericytes via α-SMA).
- Assessment of endothelial cell response to TNF-α stimulation.
Main Results:
- Achieved high purity (>99%) and yield (approx. 2.2×10^7 cells/rat) of BMECs.
- Isolated cells expressed characteristic endothelial markers and possessed typical morphology.
- Method effectively excluded astrocyte and pericyte contamination.
- Cells showed specific responses to TNF-α stimulation.
Conclusions:
- The described protocol offers an effective and reliable method for obtaining high-purity, high-yield rat BMECs.
- This technique provides a valuable tool for research in neurovascular units, blood-brain barrier function, brain tumors, and cerebrovascular diseases.
