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Absolute and induction TNF tolerance in primary human monocytes


ABSTRACT: The molecular basis of TNF tolerance is poorly understood. In this experiment, primary human monocytes were used to examine TNF refractoriness. We detect absolute tolerance as selective, dose-dependently affecting a small group of powerful effector molecules; induction tolerance represented a more general phenomenon. Primary human monocytes were incubated for 48 h with Medium or different TNF-doses and subsequently short-term stimulated for two hours with TNF. Total RNA was prepared and analysed by use of Agilent microarrays. 6 different conditions were analyzed in total, corresponding to cells that were: 1) medium incubated (M+M), 2) medium incubated and short time TNF (400 U/ml) incubated (M+T), 3) low dose TNF (40 U/ml) preincubated (40+M), 4) low dose TNF preincubated and short time TNF incubated (40+T), 5) high dose TNF (400 U/ml) preincubated (400+M), 6) high dose TNF preincubated and short time TNF incubated (400+T). 3 biological replicates (corresponding to three different healthy donors) were analyzed regarding high-dose tolerance conditions (preincubation with 400 U TNF/ml), one of which was analyzed in duplicates (including cell culture, RNA preparation and a dye-swap microarray approach). 2 biological replicates (corresponding to two different healthy donors) were analyzed under low-dose tolerance conditions (preincubation with 40 U/ml). The different human donors were numbered and indicated in brackets (d1-d5).

ORGANISM(S): Homo sapiens

SUBMITTER: Oliver Dittrich-Breiholz 

PROVIDER: E-GEOD-45371 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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