title: CD70/CD27 ligand, a member of the TNF family, is expressed in human brain tumors.
abstract: CD70 (CD27 ligand) has been implicated in proapoptotic signals mediated by its receptor CD27 in lymphocytes as well as in proliferative effects induced by reverse signaling in CD70-positive hematopoetic tumor cells. We were able to show that CD70 is expressed at the mRNA and protein level in human meningioma cells, glioma cells from solid human gliomas as well as glioma cell lines and 1 ependynoma. The intensity of CD70 expression varies considerably between different samples from 1 tumor type. In the U343 glioma cell line, CD70 was preferentially localized in the cell processes. Thus, our studies identify CD70 as a new marker molecule in brain tumors that are of nonhematopoetic origin.
authors.affiliation: Department of Anatomy, University of Kiel, Kiel, Germany. held-feindt@anat.uni-kiel.de
authors.forename: Janka
authors.initials: J
authors.lastname: Held-Feindt
authors.forename: Rolf
authors.initials: R
authors.lastname: Mentlein
mesh_terms: D015703:Antigens, CD; D015152:Blotting, Northern; D015153:Blotting, Western; D001932:Brain Neoplasms / Q000235:genetics* / Q000378:metabolism; D053282:CD27 Ligand; D002478:Cells, Cultured; D017931:DNA Primers / Q000737:chemistry; D004806:Ependymoma / Q000378:metabolism; D015972:Gene Expression Regulation, Neoplastic; D005910:Glioma / Q000235:genetics* / Q000378:metabolism; D006801:Humans; D007124:Immunoenzyme Techniques; D008024:Ligands; D008565:Membrane Proteins / Q000235:genetics* / Q000378:metabolism; D008577:Meningeal Neoplasms / Q000235:genetics* / Q000378:metabolism; D008579:Meningioma / Q000235:genetics* / Q000378:metabolism; D012333:RNA, Messenger / Q000378:metabolism; D020133:Reverse Transcriptase Polymerase Chain Reaction; D014409:Tumor Necrosis Factor-alpha / Q000378:metabolism
chemical_list: D015703:Antigens, CD; D053282:CD27 Ligand; C505771:CD70 protein, human; D017931:DNA Primers; D008024:Ligands; D008565:Membrane Proteins; D012333:RNA, Messenger; D014409:Tumor Necrosis Factor-alpha