title: The effect of covalently immobilized rhIL-1ra-ELP fusion protein on the inflammatory profile of LPS-stimulated human monocytes.
abstract: The objective of this research was to investigate whether immobilized anti-inflammatory cytokines will signal changes in the inflammatory profile of cultured monocytes. A fusion protein of recombinant human IL-1 receptor antagonist and elastin-like peptide (IL-1ra-ELP) was expressed in Escherichia coli. THP-1 human monocytes were cultured on either carboxyl-terminated self-assembled monolayers (SAMs), or SAMs with either covalently immobilized or soluble IL-1ra-ELP. LPS-stimulated monocytes exposed to either soluble or immobilized IL-1ra-ELP were prevented from cell differentiation, showed attenuated expression of pro-inflammatory cytokines, and had increased production of anti-inflammatory and pro-wound healing cytokines. These results suggest that immobilized anti-inflammatory cytokines have the potential to be immunomodulatory biomaterials.
authors.affiliation: Department of Biomedical Engineering, Duke University, Durham, NC 27708, USA.
authors.forename: Dong-Hwan
authors.initials: DH
authors.lastname: Kim
authors.forename: Jason T
authors.initials: JT
authors.lastname: Smith
authors.forename: Ashutosh
authors.initials: A
authors.lastname: Chilkoti
authors.forename: William M
authors.initials: WM
authors.lastname: Reichert
mesh_terms: D002478:Cells, Cultured; D016207:Cytokines / Q000096:biosynthesis; D004926:Escherichia coli / Q000235:genetics; D006801:Humans; D007249:Inflammation / Q000378:metabolism; D053590:Interleukin 1 Receptor Antagonist Protein / Q000235:genetics / Q000378:metabolism*; D008070:Lipopolysaccharides / Q000494:pharmacology; D018448:Models, Immunological; D009000:Monocytes / Q000166:cytology / Q000378:metabolism*; D017472:Receptors, Interleukin-1 / Q000235:genetics / Q000378:metabolism*; D011993:Recombinant Fusion Proteins / Q000378:metabolism
chemical_list: D016207:Cytokines; D053590:Interleukin 1 Receptor Antagonist Protein; D008070:Lipopolysaccharides; D017472:Receptors, Interleukin-1; D011993:Recombinant Fusion Proteins