Abstract:
:The dopamine transporter (DAT), located presynaptically on dopamine neurons, provides a marker for certain neurological diseases. In particular, the DAT is depleted in Parkinson's disease, and the extent of depletion correlates with the loss of dopamine. Herein we describe the design, synthesis, and biological evaluation of technepine, the first 99mTc-labeled SPECT imaging agent which targets the dopamine transporter in striatum. We have demonstrated that the DAT can accommodate a chelating unit attached to the 8-amine function of a tropane skeleton. Further, we have demonstrated for the first time that a molecule can be designed to carry the radionuclide 99mTc across the blood-brain barrier in sufficient quantity to obtain in vivo images of the striatum in monkeys. This advance will undoubtedly lead to the design of new receptor and transporter-mediated 99mTc agents which can label specific transporter and receptor targets in the central nervous system.
journal_name
J Med Chemjournal_title
Journal of medicinal chemistryauthors
Meltzer PC,Blundell P,Jones AG,Mahmood A,Garada B,Zimmerman RE,Davison A,Holman BL,Madras BKdoi
10.1021/jm960868tsubject
Has Abstractpub_date
1997-06-06 00:00:00pages
1835-44issue
12eissn
0022-2623issn
1520-4804pii
jm960868tjournal_volume
40pub_type
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