title: Cytokine regulation of intercellular adhesion molecule-1 (ICAM-1) expression on human glioblastoma cells.
abstract: Intercellular adhesion molecule-1 (ICAM-1) has recently been identified as one of the ligands for lymphocyte function-associated antigen-1 (LFA-1). Immunohistochemical staining of frozen tissue sections using the ICAM-1 antibody RR1/1 demonstrated significant levels of ICAM-1 expression on human glioblastoma cells and on intratumoural vascular endothelial cells. ICAM-1 was weakly expressed or absent from low grade gliomas and absent from normal and fetal brain. ICAM-1 expression was similar to that of MHC class II. HLA-DR antigens. Glioblastoma cell lines constitutively expressed ICAM-1 to a minimal or moderate extent. Surface antigen expression of ICAM-1 and ICAM-1-specific mRNA could be significantly increased by incubating glioblastoma cells with interleukin-1 beta (IL-1 beta), tumour necrosis factor-alpha (TNF-alpha), and interferon-gamma (IFN-gamma). IL-2, IL-4, IL-6 and transforming growth factor beta 2 (TGF-beta 2) had no significant effect on surface antigen expression. Significant enhancement of ICAM-1 expression was obtained using TNF-alpha and IL-1 beta at 1-10 U/ml and at 500 U/ml of IFN-gamma. Induction of ICAM-1 specific mRNA was observed 4 h after cytokine treatment and decreased by 24 h. Surface antigen expression of ICAM-1 increased for up to 48 h after treatment.
authors.affiliation: Neurosurgical Service, University Hospital, Lausanne, Switzerland.
authors.forename: M C
authors.initials: MC
authors.lastname: Kuppner
authors.forename: E
authors.initials: E
authors.lastname: van Meir
authors.forename: M F
authors.initials: MF
authors.lastname: Hamou
authors.forename: N
authors.initials: N
authors.lastname: de Tribolet
mesh_terms: D001921:Brain / Q000378:metabolism; D015815:Cell Adhesion Molecules / Q000235:genetics / Q000378:metabolism*; D004305:Dose-Response Relationship, Drug; D015870:Gene Expression / Q000187:drug effects; D005904:Glial Fibrillary Acidic Protein / Q000378:metabolism; D005910:Glioma / Q000378:metabolism*; D006801:Humans; D007124:Immunoenzyme Techniques; D018799:Intercellular Adhesion Molecule-1; D007371:Interferon-gamma / Q000494:pharmacology*; D007375:Interleukin-1 / Q000494:pharmacology; D015850:Interleukin-6 / Q000494:pharmacology; D015979:Killer Cells, Lymphokine-Activated / Q000276:immunology; D012333:RNA, Messenger / Q000235:genetics; D011994:Recombinant Proteins; D013997:Time Factors; D014407:Tumor Cells, Cultured; D014409:Tumor Necrosis Factor-alpha / Q000494:pharmacology*
chemical_list: D015815:Cell Adhesion Molecules; D005904:Glial Fibrillary Acidic Protein; D007375:Interleukin-1; D015850:Interleukin-6; D012333:RNA, Messenger; D011994:Recombinant Proteins; D014409:Tumor Necrosis Factor-alpha; D018799:Intercellular Adhesion Molecule-1; D007371:Interferon-gamma