» Articles » PMID: 15176436

Uptake and Efflux of Quinacrine, a Candidate for the Treatment of Prion Diseases, at the Blood-brain Barrier

Overview
Publisher Springer
Date 2004 Jun 5
PMID 15176436
Citations 9
Authors
Affiliations
Soon will be listed here.
Abstract

1. A clinical trial of quinacrine in patients with Creutzfeldt-Jakob disease is now in progress. The permeability of drugs through the blood-brain barrier (BBB) is a determinant of their therapeutic efficacy for prion diseases. The mechanism of quinacrine transport across the BBB was investigated using mouse brain endothelial cells (MBEC4). 2. The permeability of quinacrine through MBEC4 cells was lower than that of sodium fluorescein, a BBB-impermeable marker. The basolateral-to-apical transport of quinacrine was greater than its apical-to-basolateral transport. In the presence of P-glycoprotein (P-gp) inhibitor, cyclosporine or verapamil, the apical-to-basolateral transport of quinacrine increased. The uptake of quinacrine by MBEC4 cells was enhanced in the presence of cyclosporine or verapamil. 3. Quinacrine uptake was highly concentrative, this event being carried out by a saturable and carrier-mediated system with an apparent Km of 52.1 microM. Quinacrine uptake was insensitive to Na+-depletion and changes in the membrane potential and sensitive to changes in pH. This uptake was decreased by tetraethylammonium and cimetidine, a substrate and an inhibitor of organic cation transporters, respectively. 4. These findings suggest that quinacrine transport at the BBB is mediated by the efflux system (P-gp) and the influx system (organic cation transporter-like machinery).

Citing Articles

Developing Therapeutics for PrP Prion Diseases.

Giles K, Olson S, Prusiner S Cold Spring Harb Perspect Med. 2017; 7(4).

PMID: 28096242 PMC: 5378016. DOI: 10.1101/cshperspect.a023747.


Autophagic flux inhibition and lysosomogenesis ensuing cellular capture and retention of the cationic drug quinacrine in murine models.

Parks A, Charest-Morin X, Boivin-Welch M, Bouthillier J, Marceau F PeerJ. 2015; 3:e1314.

PMID: 26500823 PMC: 4614855. DOI: 10.7717/peerj.1314.


Convection-enhanced delivery of AAV2-PrPshRNA in prion-infected mice.

Ahn M, Bajsarowicz K, Oehler A, Lemus A, Bankiewicz K, DeArmond S PLoS One. 2014; 9(5):e98496.

PMID: 24866748 PMC: 4035323. DOI: 10.1371/journal.pone.0098496.


Quinacrine promotes replication and conformational mutation of chronic wasting disease prions.

Bian J, Kang H, Telling G Proc Natl Acad Sci U S A. 2014; 111(16):6028-33.

PMID: 24711410 PMC: 4000840. DOI: 10.1073/pnas.1322377111.


Pharmacokinetics of quinacrine efflux from mouse brain via the P-glycoprotein efflux transporter.

Ahn M, Ghaemmaghami S, Huang Y, Phuan P, May B, Giles K PLoS One. 2012; 7(7):e39112.

PMID: 22768295 PMC: 3388068. DOI: 10.1371/journal.pone.0039112.


References
1.
Wu X, Prasad P, Leibach F, Ganapathy V . cDNA sequence, transport function, and genomic organization of human OCTN2, a new member of the organic cation transporter family. Biochem Biophys Res Commun. 1998; 246(3):589-95. DOI: 10.1006/bbrc.1998.8669. View

2.
Korth C, May B, Cohen F, Prusiner S . Acridine and phenothiazine derivatives as pharmacotherapeutics for prion disease. Proc Natl Acad Sci U S A. 2001; 98(17):9836-41. PMC: 55539. DOI: 10.1073/pnas.161274798. View

3.
Dehouck M, Bree F, Fruchart J, Cecchelli R, Tillement J . Drug transfer across the blood-brain barrier: correlation between in vitro and in vivo models. J Neurochem. 1992; 58(5):1790-7. DOI: 10.1111/j.1471-4159.1992.tb10055.x. View

4.
Tatsuta T, Naito M, Mikami K, Tsuruo T . Enhanced expression by the brain matrix of P-glycoprotein in brain capillary endothelial cells. Cell Growth Differ. 1994; 5(10):1145-52. View

5.
Yabuuchi H, Tamai I, Nezu J, Sakamoto K, Oku A, SHIMANE M . Novel membrane transporter OCTN1 mediates multispecific, bidirectional, and pH-dependent transport of organic cations. J Pharmacol Exp Ther. 1999; 289(2):768-73. View