Colepicolo P, Camarero VC, Nicolas MT, Bassot JM, Karnovsky ML, Hastings JW. A sensitive and specific assay for superoxide anion released by neutrophils or macrophages based on bioluminescence of polynoidin.
Anal Biochem 1990;
184:369-74. [PMID:
2158250 DOI:
10.1016/0003-2697(90)90695-6]
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Abstract
Using the luminescent protein polynoidin, present in the bioluminescent system isolated from the marine annelid Harmothoe lunulata, we have developed a new method to measure, specifically, superoxide anion (O2-) released by macrophages or neutrophils. A small quantity of an aqueous crude extract of polynoidin is used to detect O2- released by stimulated cells. Light emission is linearly dependent on the number of cells over a wide range (10(3) to 10(7) cells), and the assay is thus more sensitive than either luminol or ferricytochrome c reduction. Luminescence is enhanced 20% by mannitol, 80% by catalase, and is totally quenched by superoxide dismutase. For the same number of cells, neutrophils showed a threefold higher release of O2- and a twofold faster first-order light decay than stimulated macrophages, in accordance with data obtained by other methods.
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