Abstract:
:To develop technetium and rhenium-labeled imaging agents for estrogen receptor (ER) positive breast tumors, we have prepared tridentate metal tricarbonyl chelates substituted at the 7alpha- and 17alpha-positions of estradiol. Some of the Re(CO)(3) conjugates have high binding for the ER in vitro. The in vivo biodistribution of the highest affinity of these novel metal tricarbonyl conjugates, prepared as the (94m)Tc labeled analogue, was evaluated by tissue dissection and microPET imaging. Although target tissue-selective uptake was not apparent, it is notable that microPET imaging identified the stomach as a major site of activity deposition, a site that might have been missed by standard tissue distribution studies.
journal_name
Bioorg Med Chemjournal_title
Bioorganic & medicinal chemistryauthors
Luyt LG,Bigott HM,Welch MJ,Katzenellenbogen JAdoi
10.1016/j.bmc.2003.09.004subject
Has Abstractpub_date
2003-11-17 00:00:00pages
4977-89issue
23eissn
0968-0896issn
1464-3391pii
S0968089603006102journal_volume
11pub_type
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