Title : Gangliosides inhibit T-lymphocyte proliferation by preventing the interaction of interleukin-2 with its cell surface receptors.

Pub. Date : 1993 May

PMID : 8509130






17 Functional Relationships(s)
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1 Gangliosides inhibit T-lymphocyte proliferation by preventing the interaction of interleukin-2 with its cell surface receptors. Gangliosides interleukin 2 Homo sapiens
2 Gangliosides are known to be actively shed from tumour cell membranes, and increased levels of circulating gangliosides may cause tumour-induced T-lymphocyte immunosuppression in vivo by interfering with the actions of interleukin-2 (IL-2). Gangliosides interleukin 2 Homo sapiens
3 Gangliosides are known to be actively shed from tumour cell membranes, and increased levels of circulating gangliosides may cause tumour-induced T-lymphocyte immunosuppression in vivo by interfering with the actions of interleukin-2 (IL-2). Gangliosides interleukin 2 Homo sapiens
4 Gangliosides are known to be actively shed from tumour cell membranes, and increased levels of circulating gangliosides may cause tumour-induced T-lymphocyte immunosuppression in vivo by interfering with the actions of interleukin-2 (IL-2). Gangliosides interleukin 2 Homo sapiens
5 Gangliosides are known to be actively shed from tumour cell membranes, and increased levels of circulating gangliosides may cause tumour-induced T-lymphocyte immunosuppression in vivo by interfering with the actions of interleukin-2 (IL-2). Gangliosides interleukin 2 Homo sapiens
6 We have investigated the effect of gangliosides on the interaction of IL-2 with its cell surface receptors (IL-2R). Gangliosides interleukin 2 Homo sapiens
7 Gangliosides inhibited IL-2-stimulated proliferation in synchronized populations of the IL-2-dependent cell lines CTLL-2 and HT-2. Gangliosides interleukin 2 Homo sapiens
8 Gangliosides inhibited IL-2-stimulated proliferation in synchronized populations of the IL-2-dependent cell lines CTLL-2 and HT-2. Gangliosides interleukin 2 Homo sapiens
9 The immunosuppressive effect was most effective when gangliosides were added during the first 4 hr after IL-2-stimulation, indicating that they acted early in the IL-2 signalling pathway. Gangliosides interleukin 2 Homo sapiens
10 The immunosuppressive effect was most effective when gangliosides were added during the first 4 hr after IL-2-stimulation, indicating that they acted early in the IL-2 signalling pathway. Gangliosides interleukin 2 Homo sapiens
11 Inhibition could be completely overcome by exogenous IL-2, suggesting that gangliosides inhibited growth solely by competing with IL-2R for available IL-2. Gangliosides interleukin 2 Homo sapiens
12 Inhibition could be completely overcome by exogenous IL-2, suggesting that gangliosides inhibited growth solely by competing with IL-2R for available IL-2. Gangliosides interleukin 2 Homo sapiens
13 In support of this proposal, gangliosides induced a concomitant dose-dependent decrease in binding of [125I]IL-2 to high-, medium- and low-affinity IL-2R. Gangliosides interleukin 2 Homo sapiens
14 Ganglioside-treated cells recovered their high-affinity [125I]IL-2 binding after washing. Gangliosides interleukin 2 Homo sapiens
15 A thin-layer chromatography overlay technique was used to demonstrate that IL-2 binds directly to gangliosides, but not to simple neutral glycolipids or acidic lipids. Gangliosides interleukin 2 Homo sapiens
16 Taken together, these findings indicate that gangliosides directly block the interaction of IL-2 with IL-2R, and may explain, in part, the immunosuppressive activities of gangliosides in vivo. Gangliosides interleukin 2 Homo sapiens
17 Taken together, these findings indicate that gangliosides directly block the interaction of IL-2 with IL-2R, and may explain, in part, the immunosuppressive activities of gangliosides in vivo. Gangliosides interleukin 2 Homo sapiens