title: Natural killer cell phenotype and clinical response to interferon-beta therapy in multiple sclerosis.
abstract: CD56(bright) NK cells, which may play a role in immunoregulation, are expanded in multiple sclerosis (MS) patients treated with immunomodulatory therapies such as daclizumab and interferon-beta (IFNβ). Yet, whether this NK cell subset is directly involved in the therapeutic effect is unknown. As NK receptor (NKR) expression by subsets of NK cells and CD8+ T lymphocytes is related to MS clinical course, we addressed whether CD56(bright) NK cells and NKR in IFNβ-treated MS patients differ according to the clinical response. IFNβ was associated to lower LILRB1+ and KIR+NK cells, and higher NKG2A+NK cell proportions, an immunophenotypic pattern mainly found in responders. After IFNβ treatment, a CD56(bright) NK cell expansion was significantly related to a positive clinical response. Our results reveal that IFNβ may promote in responders changes in the NK cell immunophenotype, corresponding to the profile found at early maturation stages of this lymphocyte lineage.
authors: Neurology Service, Parc de Salut Mar, IMIM (Hospital del Mar Research Institute), Barcelona, Spain. 95917@parcdesalutmar.cat
authors: J E
authors: JE
authors: Martínez-Rodríguez
authors: M
authors: M
authors: López-Botet
authors: E
authors: E
authors: Munteis
authors: J
authors: J
authors: Rio
authors: J
authors: J
authors: Roquer
authors: X
authors: X
authors: Montalban
authors: M
authors: M
authors: Comabella
mesh_terms: D000328:Adult; D019002:CD56 Antigen / Q000276:immunology; D018414:CD8-Positive T-Lymphocytes / Q000187:drug effects / Q000276:immunology; D016022:Case-Control Studies; D005260:Female; D006801:Humans; D007155:Immunologic Factors / Q000276:immunology / Q000627:therapeutic use*; D016899:Interferon-beta / Q000276:immunology / Q000627:therapeutic use*; D007694:Killer Cells, Natural / Q000276:immunology*; D008297:Male; D008875:Middle Aged; D009103:Multiple Sclerosis / Q000188:drug therapy* / Q000276:immunology; D055607:Receptors, Natural Killer Cell / Q000276:immunology
chemical_list: D019002:CD56 Antigen; D007155:Immunologic Factors; C522918:NCAM1 protein, human; D055607:Receptors, Natural Killer Cell; D016899:Interferon-beta