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2015 ; 2
(ä): 15037
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Transcytosis in the blood-cerebrospinal fluid barrier of the mouse brain with an
engineered receptor/ligand system
#MMPMID26491705
Méndez-Gómez HR
; Galera-Prat A
; Meyers C
; Chen W
; Singh J
; Carrión-Vázquez M
; Muzyczka N
Mol Ther Methods Clin Dev
2015[]; 2
(ä): 15037
PMID26491705
show ga
Crossing the blood-brain and the blood-cerebrospinal fluid barriers (BCSFB) is
one of the fundamental challenges in the development of new therapeutic molecules
for brain disorders because these barriers prevent entry of most drugs from the
blood into the brain. However, some large molecules, like the protein
transferrin, cross these barriers using a specific receptor that transports them
into the brain. Based on this mechanism, we engineered a receptor/ligand system
to overcome the brain barriers by combining the human transferrin receptor with
the cohesin domain from Clostridium thermocellum, and we tested the hybrid
receptor in the choroid plexus of the mouse brain with a dockerin ligand. By
expressing our receptor in choroidal ependymocytes, which are part of the BCSFB,
we found that our systemically administrated ligand was able to bind to the
receptor and accumulate in ependymocytes, where some of the ligand was
transported from the blood side to the brain side.