title: Expression of intercellular adhesion molecule-1 (ICAM-1) on human thyroid cells lines correlated with their binding of lymphoblasts.
abstract: We have investigated the expression of intercellular adhesion molecule-1 (ICAM-1) by novel functional human thyroid cell lines (designated SGHTL). ICAM-1 is constitutively expressed and it is rapidly upregulated in response to each of the recombinant cytokines: gamma-interferon, interleukin-1 and tumour necrosis factor. This contrasts with the more slowly increased expression of major histocompatibility complex (MHC) class II antigens in response to gamma-interferon alone. We have also demonstrated binding of activated lymphocytes to SGHTL cells: this interaction is increased following treatment with these cytokines and is inhibited by monoclonal antibodies directed against ICAM-1 or lymphocyte function-associated antigen-1 (LFA-1) but not by antibodies against CD2 or MHC class II antigens. Hence, we conclude that the binding of lymphoblasts to human thyroid cells involves an LFA-1- and ICAM-1-dependent pathway as well as other basal and cytokine-inducible pathway(s). These do not appear to involve MHC class II antigens, CD2 or an LFA-1 ligand other than ICAM-1.
authors.affiliation: Department of Cellular and Molecular Sciences, St. George's Hospital Medical School, London, U.K.
authors.forename: P D
authors.initials: PD
authors.lastname: Fowler
authors.forename: M
authors.initials: M
authors.lastname: Tacker
authors.forename: G S
authors.initials: GS
authors.lastname: Whitley
authors.forename: A
authors.initials: A
authors.lastname: Meager
authors.forename: S S
authors.initials: SS
authors.lastname: Nussey
authors.forename: A P
authors.initials: AP
authors.lastname: Johnstone
mesh_terms: D000911:Antibodies, Monoclonal / Q000494:pharmacology; D000943:Antigens, Differentiation / Q000276:immunology / Q000502:physiology; D002448:Cell Adhesion; D015815:Cell Adhesion Molecules / Q000276:immunology / Q000502:physiology*; D002460:Cell Line; D000949:Histocompatibility Antigens Class II / Q000378:metabolism; D006801:Humans; D018799:Intercellular Adhesion Molecule-1; D007371:Interferon-gamma / Q000494:pharmacology; D007375:Interleukin-1 / Q000494:pharmacology; D007700:Kinetics; D016169:Lymphocyte Function-Associated Antigen-1; D008214:Lymphocytes / Q000378:metabolism*; D016028:Receptors, Leukocyte-Adhesion / Q000276:immunology / Q000502:physiology; D011994:Recombinant Proteins / Q000494:pharmacology; D013961:Thyroid Gland / Q000378:metabolism*; D014407:Tumor Cells, Cultured; D014409:Tumor Necrosis Factor-alpha / Q000494:pharmacology
chemical_list: D000911:Antibodies, Monoclonal; D000943:Antigens, Differentiation; D015815:Cell Adhesion Molecules; D000949:Histocompatibility Antigens Class II; D007375:Interleukin-1; D016169:Lymphocyte Function-Associated Antigen-1; D016028:Receptors, Leukocyte-Adhesion; D011994:Recombinant Proteins; D014409:Tumor Necrosis Factor-alpha; D018799:Intercellular Adhesion Molecule-1; D007371:Interferon-gamma