PMID- 2553491 OWN - NLM STAT- MEDLINE DCOM- 19891221 LR - 20190621 IS - 0014-5793 (Print) IS - 0014-5793 (Linking) VI - 257 IP - 1 DP - 1989 Oct 23 TI - Granulocyte/macrophage colony-stimulating factor primes human neutrophils for increased diacylglycerol generation in response to chemoattractant. PG - 188-90 AB - Pretreatment of human neutrophils with granulocyte macrophage-colony stimulating factor (GM-CSF) augments several biological responses to chemoattractants (e.g. the respiratory burst, degranulation, and chemotaxis). However, little is known regarding the intracellular effects of priming with GM-CSF. In the present study, we have investigated the effects of GM-CSF on the generation of diacylglycerol (DAG), a proposed mediator of neutrophil responses. GM-CSF alone produced only a small increase in cellular DAG mass, which was most apparent after 30 min. GM-CSF pretreatment (60 min), however, caused a striking augmentation in DAG generation in response to the chemoattractant formyl-methionyl-leucyl-phenylalanine (fMLP), compared with neutrophils preincubated without GM-CSF. The augmentation in DAG generation correlated with an enhancement by GM-CSF of superoxide generation in response to fMLP. The data suggest that GM-CSF may exert some of its biological effects by enhancing DAG generation in response to a second agonist. FAU - Tyagi, S R AU - Tyagi SR AD - Department of Biochemistry, Emory University School of Medicine, Atlanta, GA 30322. FAU - Winton, E F AU - Winton EF FAU - Lambeth, J D AU - Lambeth JD LA - eng GR - CA46508/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - England TA - FEBS Lett JT - FEBS letters JID - 0155157 RN - 0 (Colony-Stimulating Factors) RN - 0 (Diglycerides) RN - 0 (Glycerides) RN - 0 (Growth Substances) RN - 11062-77-4 (Superoxides) RN - 59880-97-6 (N-Formylmethionine Leucyl-Phenylalanine) RN - 83869-56-1 (Granulocyte-Macrophage Colony-Stimulating Factor) SB - IM MH - Chemotaxis, Leukocyte/*drug effects MH - Colony-Stimulating Factors/*pharmacology MH - Diglycerides/*blood MH - Glycerides/*blood MH - Granulocyte-Macrophage Colony-Stimulating Factor MH - Growth Substances/*pharmacology MH - Humans MH - In Vitro Techniques MH - Kinetics MH - N-Formylmethionine Leucyl-Phenylalanine/*pharmacology MH - Neutrophils/drug effects/metabolism/*physiology MH - Superoxides/blood EDAT- 1989/10/23 00:00 MHDA- 1989/10/23 00:01 CRDT- 1989/10/23 00:00 PHST- 1989/10/23 00:00 [pubmed] PHST- 1989/10/23 00:01 [medline] PHST- 1989/10/23 00:00 [entrez] AID - 0014-5793(89)81817-4 [pii] AID - 10.1016/0014-5793(89)81817-4 [doi] PST - ppublish SO - FEBS Lett. 1989 Oct 23;257(1):188-90. doi: 10.1016/0014-5793(89)81817-4.