title: Interferon production in murine macrophage-like cell lines.
abstract: Five murine macrophage (M phi)-like cell lines were examined to determine their suitability for the characterization of M phi interferons (IFNs). The J774A.1, RAW 309 Cr.1, and RAW 264.7 cell lines produced 30-800 international units (IU)/10(6) cells when treated with 5-200 micrograms of bacterial lipopolysaccharide (LPS). No IFN was detected in LPS-treated P388D1 or PU5-1.8 cell cultures. All cell lines produced IFN when inoculated with Newcastle disease virus (NDV); however, only 15 IU/10(6) cells of acid stable IFN were produced in PU5-1.8 cell cultures in comparison to 4.2 X 10(3)-1.7 X 10(4) IU/10(6) cells in the other cell lines. Most of the IFN was produced within 4 h in LPS-treated cell cultures and within 12 h in NDV-infected cell cultures. All IFNs were stable at pH 2.0 and were neutralized with antiserum against mouse L cell IFN. These cell lines appear competent for use in studying the synthesis, molecular weights, and regulatory functions of M phi IFNs.
authors.forename: R J
authors.initials: RJ
authors.lastname: Salo
authors.forename: D K
authors.initials: DK
authors.lastname: Bleam
authors.forename: V L
authors.initials: VL
authors.lastname: Greer
authors.forename: A P
authors.initials: AP
authors.lastname: Ortega
mesh_terms: D000818:Animals; D002460:Cell Line; D006863:Hydrogen-Ion Concentration; D007369:Interferon Inducers / Q000494:pharmacology*; D007372:Interferons / Q000096:biosynthesis*; D008070:Lipopolysaccharides / Q000494:pharmacology; D008264:Macrophages / Q000187:drug effects / Q000276:immunology*; D051379:Mice; D009522:Newcastle disease virus; D013696:Temperature
chemical_list: D007369:Interferon Inducers; D008070:Lipopolysaccharides; D007372:Interferons