Abstract:
:Multidrug resistance-associated protein 1 (MRP1) is a drug efflux transporter that has been implicated in the pathology of several neurological diseases and is associated with development of multidrug resistance. To enable measurement of MRP1 function in the living brain, a series of 6-halopurines decorated with fluorinated side chains have been synthesized and evaluated as putative pro-drug tracers. The tracers were designed to undergo conjugation with glutathione within the brain and hence form the corresponding MRP1 substrate tracers in situ. 6-Bromo-7-(2-[(18)F]fluoroethyl)purine showed good brain uptake and rapid metabolic conversion. Dynamic PET imaging demonstrated a marked difference in brain clearance rates between wild-type and mrp1 knockout mice, suggesting that the tracer can allow noninvasive assessment of MRP1 activity in vivo.
journal_name
J Med Chemjournal_title
Journal of medicinal chemistryauthors
Galante E,Okamura T,Sander K,Kikuchi T,Okada M,Zhang MR,Robson M,Badar A,Lythgoe M,Koepp M,Årstad Edoi
10.1021/jm401764asubject
Has Abstractpub_date
2014-02-13 00:00:00pages
1023-32issue
3eissn
0022-2623issn
1520-4804journal_volume
57pub_type
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