PMID- 7511974 OWN - NLM STAT- MEDLINE DCOM- 19940509 LR - 20190512 IS - 0006-8950 (Print) IS - 0006-8950 (Linking) VI - 117 ( Pt 1) DP - 1994 Feb TI - Human astrocytes are only partially competent antigen presenting cells. Possible implications for lesion development in multiple sclerosis. PG - 59-69 AB - Highly purified astrocyte cultures from human embryonic brain were examined for their capacity to present antigen to human leukocyte antigen (HLA) class II compatible, cytolytic CD4+ T lymphocytes. Most astrocytes constitutively expressed HLA class I products and LFA-3 (CD58). Constitutive expression of HLA class II, LFA-1 alpha (CD11a) and ICAM-1 (CD54) was lower and varied among different cultures, while LFA-2 (CD2) was absent. IFN-gamma alone or in combination with TNF-alpha strongly enhanced expression of HLA class I, HLA-DR, -DP, -DQ, LFA-1 alpha and ICAM-1, but did not affect expression of LFA-2 (CD2) and LFA-3 (CD58). TNF-alpha alone induced only HLA class I and ICAM-1, but not HLA class II or LFA-1 alpha. Cytokine treated, but not untreated astrocytes were able to present protein (auto-)antigens to specific T lymphocyte lines. Astrocytes expressing appropriate major histocompatibility complex class II products were lysed by CD4+ T cells specific for myelin basic protein or tetanus toxoid. The lytic response was antigen dose dependent and HLA-DR restricted. It could be blocked by antibodies against HLA-DR determinants and against the adhesion molecules LFA-1 alpha and ICAM-1. In remarkable contrast to their susceptibility to T cell lysis, antigen presenting astrocytes were not only completely unable to induce T cell proliferation but even inhibited proliferation. The results indicate that, although human astrocytes have the potential to present protein antigens to CD4+ T cells, they do not induce the co-stimulatory factors required to trigger the complete T cell activation programme. FAU - Weber, F AU - Weber F AD - Department of Neuroimmunology, Max-Planck-Institute of Psychiatry, Martinsried, Germany. FAU - Meinl, E AU - Meinl E FAU - Aloisi, F AU - Aloisi F FAU - Nevinny-Stickel, C AU - Nevinny-Stickel C FAU - Albert, E AU - Albert E FAU - Wekerle, H AU - Wekerle H FAU - Hohlfeld, R AU - Hohlfeld R LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Brain JT - Brain : a journal of neurology JID - 0372537 RN - 0 (Antigens, CD) RN - 0 (Antigens, Differentiation, T-Lymphocyte) RN - 0 (CD2 Antigens) RN - 0 (CD58 Antigens) RN - 0 (Cell Adhesion Molecules) RN - 0 (Epitopes) RN - 0 (HLA Antigens) RN - 0 (Lymphocyte Function-Associated Antigen-1) RN - 0 (Membrane Glycoproteins) RN - 0 (Receptors, Immunologic) RN - 0 (Tumor Necrosis Factor-alpha) RN - 126547-89-5 (Intercellular Adhesion Molecule-1) RN - 82115-62-6 (Interferon-gamma) SB - IM MH - Antigen-Presenting Cells/*immunology MH - Antigens, CD/immunology MH - Antigens, Differentiation, T-Lymphocyte/immunology MH - Astrocytes/*immunology MH - CD2 Antigens MH - CD58 Antigens MH - Cell Adhesion Molecules/immunology MH - Cell Division MH - Cell Line MH - Epitopes MH - HLA Antigens/*immunology MH - Humans MH - Intercellular Adhesion Molecule-1 MH - Interferon-gamma/immunology MH - Lymphocyte Function-Associated Antigen-1/immunology MH - Membrane Glycoproteins/immunology MH - Multiple Sclerosis/*immunology MH - Receptors, Immunologic/immunology MH - T-Lymphocytes/cytology/immunology MH - Tumor Necrosis Factor-alpha/immunology EDAT- 1994/02/01 00:00 MHDA- 1994/02/01 00:01 CRDT- 1994/02/01 00:00 PHST- 1994/02/01 00:00 [pubmed] PHST- 1994/02/01 00:01 [medline] PHST- 1994/02/01 00:00 [entrez] AID - 10.1093/brain/117.1.59 [doi] PST - ppublish SO - Brain. 1994 Feb;117 ( Pt 1):59-69. doi: 10.1093/brain/117.1.59.