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. 1988 May;79(5):626-31.
doi: 10.1111/j.1349-7006.1988.tb00032.x.

Tumor necrosis factor-inducing activities of lipid A preparations from Pseudomonas diminuta and Pseudomonas vesicularis

S Arata  1 , K Nakaya, H Furuhashi, Y Nakamura, T Hirayama, J Mashimo, N Kasai
Affiliations

Tumor necrosis factor-inducing activities of lipid A preparations from Pseudomonas diminuta and Pseudomonas vesicularis

S Arata et al. Jpn J Cancer Res. 1988 May.

Abstract

Tumor necrosis factor (TNF)-inducing activities of lipid A preparations from P. diminuta and P. vesicularis, which contain mainly 2 mol of 2,3-diamino-2,3-dideoxy-D-glucose and 1 mol of nonglycosidic phosphate as the backbone component and have partly different fatty acid compositions, were examined. TNF was induced by injecting various lipid A fractions into mice that had previously been sensitized with Mycobacterium bovis BCG vaccine. A major component of lipid A of both strains, referred to as A3 fraction, exhibited stronger TNF-inducing activity than A2 fraction having incomplete acyl residues. The removal of ester-linked fatty acyl groups by mild hydrazinolysis of the P. diminuta lipid A results in a marked decrease of the activity. These results suggest that the structure of the hydrophobic part, including the amide-linked acyloxyacyl group(s), of the lipid A molecule play an important role in inducing TNF in the sera of mice.

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