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Resistance of cancer cells against apoptosis induced by death factors contributes to the limited efficiency of immune- and drug-induced destruction of tumors. We report here that insulin and(More)
In the tumor microenvironment, autocrine/paracrine loops of insulin-like growth factors (IGFs) contribute to cancer cell survival. However, we report here that IGF-I can send contradictory signals(More)
It has been reported that insulin-like growth factor (IGF) II is associated with human primary colorectal tumors and colon-carcinoma cell lines. Here, we examine alterations in circulating levels of(More)
HT29-D4 human colon-carcinoma cells have been shown to secrete insulin-like growth factor (IGF)-II and to simultaneously express type-I IGF receptors. However, the sequestration of IGF-II by several(More)
Generation of superoxide anion (O2-) by human polymorphonuclear leukocytes (PMNs) in response to stimulation by opsonized zymosan was enhanced about 100% by prior exposure of the PMNs to human(More)
Limited proteolysis of insulin-like-growth-factor (IGF)-binding proteins (IGFBPs) represents a key process to modulate IGF bio-availability at the cellular level. In human colon carcinomas,(More)
In this study, we have used enterocyte-like differentiated HT29-D4 human colonic carcinoma cells cultured in a glucose-free medium (HT29-D4-GAL cells) on semi-permeable supports in order to(More)