NR AKLB
AU Satoh,J.; Kurohara,K.; Yukitake,M.; Kuroda,Y.
TI Constitutive and cytokine-inducible expression of prion protein gene in human neural cell lines
QU Journal of Neuropathology and Experimental Neurology 1998 Feb; 57(2): 131-9
PT journal article
AB Prion diseases are a group of neurodegenerative disorders characterized by intracerebral accumulation of a protease-resistant prion protein (PrPsc) that causes extensive neuronal degeneration and astrogliosis. The regulation of prion protein (PrP) gene expression by a panel of glial and neuronal cytokines (TNF-alpha, IFN-gamma, IL-1ß, IL-10, and TGF-beta1) was investigated in human neural cell lines by reverse transcription-polymerase chain reaction and Northern blot analysis. The constitutive expression of PrP mRNA was identified in all human neural cell lines and tissues examined including Y79 retinoblastoma, IMR-32 neuroblastoma, SK-N-SH neuroblastoma, U-373MG astrocytoma, KG-1-C glioma, NTera2 teratocarcinoma, NTera2-derived differentiated neurons (NTera2-N), peripheral nerve, and cerebral and cerebellar tissues. In SK-N-SH cells, a 48 hour (h) treatment with 100 ng/ml IL-1ß, 100 ng/ml TNF-alpha, or 100 nM phorbol 12-myristate 13-acetate induced a 2.7- to 4.2-fold increase in the level of PrP mRNA, while the exposure to 100 ng/ml IFN-gamma resulted in a 50% decrease. By contrast, none of these cytokines significantly altered the levels of PrP mRNA in IMR-32, NTera2-N, or U-373MG cells. These results indicate that the PrP gene expression is constitutive in a wide range of human neural cell lines and tissues where it is controlled by cell type-specific regulatory mechanisms.
MH Astrocytoma; Brain/*metabolism; Brain Neoplasms; Cell Line; Cerebellum/metabolism; Cytokines/*pharmacology; Eye Neoplasms; *Gene Expression Regulation/drug effects; Human; Interferon Type II/pharmacology; Interleukin-1/pharmacology; Interleukin-10/pharmacology; Neuroblastoma; Neuroglia/drug effects/*metabolism; Neurons/drug effects/*metabolism; Polymerase Chain Reaction; Prions/*biosynthesis; RNA, Messenger/biosynthesis; Retinoblastoma; Support, Non-U.S. Gov't; Teratocarcinoma; Tetradecanoylphorbol Acetate/pharmacology; Transcription, Genetic/drug effects; Transforming Growth Factor beta/pharmacology; Tumor Cells, Cultured; Tumor Necrosis Factor/pharmacology
AD Department of Internal Medicine, Saga Medical School, Nabeshima, Japan.
SP englisch
PO USA