Abbreviations
BBB: blood-brain barrier.
BC: breast cancer.
BCM: breast cancer metastasis.
BCM/Brain: breast cancer metastasis in brain.
BMEC: brain microvascular endothelial cells.
ER-: estrogen receptor negative.
ECM: extracellular matrix.
HBMECs: human brain microvascular endothelial cells.
IHC: immunohistochemistry.
IF: immunostaining.
LCM: laser capture microdissection.
RT-PCR: reverse transcription polymerase chain reaction.
TJ: tight junction.
TGL: A triple-modality reporter gene of thymidine kinase (T), GFP (G), and luciferase (L)
TEER: trans-endothelial electrical resistance.
TME: tumor microenvironment
TNBC: triple negative and basal type breast cancer.
VEGF-A: vascular endothelial growth factor.
WB: western blotting.