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. 1984 Jun 1;220(2):561–568. doi: 10.1042/bj2200561

Characterization of deoxyribonuclease activities derived from control and inflammation-associated mouse peritoneal macrophages.

G E Brown, T P Karpetsky, K Rictor, A Rahman
PMCID: PMC1153660  PMID: 6430283

Abstract

Native DNAase (deoxyribonuclease) activities derived from mouse peritoneal cavity and peripheral blood components were separated, detected, and characterized by electrophoresis into polyacrylamide gels containing DNA, followed by incubation of the gels, and staining of the substrate to reveal only the DNAase activities. Resident peritoneal macrophages contained 12 DNAase-II-like activities that were characteristic of that cell type, whereas lymphocytes and granulocytes each contained five DNAases. Induction of inflammation by peritoneal injection of thioglycollate resulted in changes in macrophage DNAase expression, including: increased total DNAase activity, a decrease in the number of activities from 12 to 11, increased activity of a specific subset of the enzymes, and a change in the apparent size of a specific subset of the enzymes. Electrophoretic and enzymic properties and sensitivity to endo-beta-N-acetylglucosaminidase H indicated that the macrophage activities probably represented charge variants of one or two parent peptide chains.

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Selected References

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