title: Multiple biological activities of human recombinant interleukin 1.
abstract: Complementary DNA coding for human monocyte interleukin 1 (IL-1), pI 7 form, was expressed in Escherichia coli. During purification, IL-1 activity on murine T cells was associated with the recombinant protein. Homogeneous human recombinant IL-1 (hrIL-1) was tested in several assays to demonstrate the immunological and inflammatory properties attributed to this molecule. hrIL-1 induced proliferative responses in a cloned murine T cell in the presence of suboptimal concentrations of mitogen, whereas no effect was observed with hrIL-1 alone. At concentrations of 0.05 ng/ml, hrIL-1 doubled the response to mitogen (5 X 10(6) half maximal units/mg). Human peripheral blood T cells depleted of adherent cells underwent a blastogenic response and released interleukin 2 in the presence of hrIL-1 and mitogen. hrIL-1 was a potent inflammatory agent by its ability to induce human dermal fibroblast prostaglandin E2 production in vitro and to produce monophasic (endogenous pyrogen) fever when injected into rabbits or endotoxin-resistant mice. These studies establish that the dominant pI 7 form of recombinant human IL-1 possesses immunological and inflammatory properties and acts on the central nervous system to produce fever.
mesh_terms: D000596:Amino Acids / Q000032:analysis; D000818:Animals; D004247:DNA / Q000032:analysis; D015232:Dinoprostone; D004305:Dose-Response Relationship, Drug; D004926:Escherichia coli / Q000235:genetics; D005334:Fever / Q000139:chemically induced; D005347:Fibroblasts / Q000187:drug effects / Q000378:metabolism; D006801:Humans; D007375:Interleukin-1 / Q000494:pharmacology*; D008213:Lymphocyte Activation / Q000187:drug effects; D051379:Mice; D008809:Mice, Inbred C3H; D008970:Molecular Weight; D011458:Prostaglandins E / Q000096:biosynthesis; D011817:Rabbits; D011994:Recombinant Proteins / Q000494:pharmacology*; D013601:T-Lymphocytes / Q000187:drug effects
chemical_list: D000596:Amino Acids; D007375:Interleukin-1; D011458:Prostaglandins E; D011994:Recombinant Proteins; D004247:DNA; D015232:Dinoprostone