title: B-cell-derived interleukin-1 (IL-1)-like factor. II. Sources, effects, and biochemical properties.
abstract: A variety of types of human B-cell lines were evaluated for their ability to produce interleukin 1 (IL-1)-like factors. All of the eight Epstein-Barr virus (EBV)-transformed B lymphocyte lines, three of four of the EBV+ lymphoma lines, only three of seven of the EBV- lymphoma lines, and none of the three tested myeloma lines secreted some IL-1 activity. The IL-1-like factor produced by the cell lines was detected on the basis of its thymocyte comitogenic and/or fibroblast proliferative activities. Injections of partially purified IL-1-like factor from one of the EBV-transformed B-lymphocyte lines also induced the appearance of an acute phase protein (haptoglobin) in the serum of C3H/HeJ mice. These biological activities are identical with those of monocyte-derived IL-1. Thymocyte comitogenic activity and fibroblast proliferation activity from one of the EBV-B cell line-derived IL-1-like activities were not dissociable by biochemical procedures, including HPLC gel filtration and HPLC anion-exchange chromatography. However, the IL-1-like factor from one of the EBV-B lymphocyte cell lines was larger in size (25 kDa) and more acidic (pI 5.5) than monocyte-derived IL-1.
authors.forename: K
authors.initials: K
authors.lastname: Matsushima
authors.forename: G
authors.initials: G
authors.lastname: Tosato
authors.forename: D
authors.initials: D
authors.lastname: Benjamin
authors.forename: J J
authors.initials: JJ
authors.lastname: Oppenheim
mesh_terms: D000818:Animals; D001402:B-Lymphocytes / Q000378:metabolism* / Q000382:microbiology; D002460:Cell Line; D002846:Chromatography, Affinity; D002850:Chromatography, Gel; D002851:Chromatography, High Pressure Liquid; D005347:Fibroblasts / Q000187:drug effects; D006242:Haptoglobins / Q000378:metabolism; D004854:Herpesvirus 4, Human / Q000276:immunology; D006801:Humans; D007375:Interleukin-1 / Q000302:isolation & purification / Q000378:metabolism* / Q000494:pharmacology; D051379:Mice; D008810:Mice, Inbred C57BL; D009000:Monocytes / Q000378:metabolism; D013601:T-Lymphocytes / Q000187:drug effects
chemical_list: D006242:Haptoglobins; D007375:Interleukin-1