Adenis A, Peyrat JP, Hecquet B, Delobelle A, Depadt G, Quandalle P, Bonneterre J, Demaille A. Type I insulin-like growth factor receptors in human colorectal cancer.
Eur J Cancer 1995;
31A:50-5. [PMID:
7695979 DOI:
10.1016/0959-8049(94)00368-f]
[Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Type I insulin-like growth factor (IGF) receptors have been recently characterised in human colorectal cancers. The aim of this study was to determine whether type I IGF receptor concentration may be related to prognostic variables in colorectal cancers. Saturation experiments with [125I]IGF-I were performed on membrane preparations of 46 frozen specimens (20 tumours, 26 controls) and analysed according to the Scatchard method. In all the studied cases, we found a single class of high affinity binding sites in both normal and malignant colorectal tissues (median 0.17 and 0.15 nmol/l, respectively). Using paired analysis, we found no significant difference in terms of type I IGF receptor concentration between malignant and normal colorectal tissues. There was also no relationship between type I IGF receptors and any of the tumour characteristics studied. This study does not support a critical role of the type I IGF receptors in the clinical management of colorectal cancers.
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