Kothari K, Prasad S, Korde A, Mukherjee A, Mathur A, Jaggi M, Venkatesh M, Pillai AMR, Mukherjee R, Ramamoorthy N. 99mTc(CO)3-VIP analogues: Preparation and evaluation as tumor imaging agent.
Appl Radiat Isot 2007;
65:382-6. [PMID:
17194598 DOI:
10.1016/j.apradiso.2006.11.001]
[Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2006] [Accepted: 11/02/2006] [Indexed: 10/01/2022]
Abstract
Vasoactive intestinal peptide (VIP) receptors are expressed abundantly on many types of tumors and, hence, radiolabeled VIP analogues are being explored for tumor imaging and therapy. Here, we report synthesis of three VIP analogues and their radiolabeling with (99m)Tc via a novel tricarbonyl synthon. The radiolabeled product could be prepared in high yields (>95%) and stability. In vitro studies showed significant uptake of (99m)Tc(CO)((3))-VP05 in human colon carcinoma cells. Biodistribution studies in animal tumor model showed 0.4-1%ID/g tumor uptake.
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