Article (Scientific journals)
Synthesis, radiosynthesis, in vitro and preliminary in vivo evaluation of biphenyl carboxylic and hydroxamic matrix metalloproteinase (MMP) inhibitors as potential tumor imaging agents.
Oltenfreiter, R.; Staelens, L.; Hillaert, U. et al.
2005In Applied Radiation and Isotopes, 62 (6), p. 903-13
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Keywords :
Radiolabelled MMP inhibitors; Iodine-123; In vitro enzyme assay; SPECT; Tumor imaging
Abstract :
[en] Excess matrix degradation is one of the hallmarks of cancer and is an important factor in the process of tumor progression. It is implicated in invasion, metastasis, growth, angiogenesis and migration. Many characteristics of matrix metalloproteinases (MMPs) make them attractive therapeutic and diagnostic targets. MMP expression is upregulated at the tumor site, with localization of activity in the tumor or the surrounding stroma, providing a target for medical imaging techniques. Radioiodinated carboxylic and hydroxamic MMP inhibitors 2-(4′-[123I] iodo-biphenyl-4-sulfonylamino)-3-methyl-butyric acid (9) and 2-(4′-[123I] iodo-biphenyl-4-sulfonylamino)-3-methyl-butyramide (11), their unlabelled standards and precursors were synthesized. Radioiodination was conducted by electrophilic aromatic substitution of the tributylstannyl precursors and resulted in radiochemical yields of 70±5% (n=6) and 60±5% (n=4), respectively. In vitro zymography and enzyme assays showed for both hydroxamic acid and carboxylic acid compounds a good inhibition activity and a high selectivity for MMP-2. In vivo biodistribution in NMRI mice showed no long-term accumulation in organs and the possibility to accumulate in the tumor in a later phase of this study.
Disciplines :
Biochemistry, biophysics & molecular biology
Author, co-author :
Oltenfreiter, R.
Staelens, L.
Hillaert, U.
Heremans, A.
Noël, Agnès ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Biologie cellulaire et moléculaire appliquée à l'homme
Frankenne, F.
Slegers, G.
Language :
English
Title :
Synthesis, radiosynthesis, in vitro and preliminary in vivo evaluation of biphenyl carboxylic and hydroxamic matrix metalloproteinase (MMP) inhibitors as potential tumor imaging agents.
Publication date :
2005
Journal title :
Applied Radiation and Isotopes
ISSN :
0969-8043
Publisher :
Pergamon Press, Oxford, United Kingdom
Volume :
62
Issue :
6
Pages :
903-13
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 21 December 2009

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