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• W1991626677 abstract "The regulated expression of interleukin-2 (IL-2) and interferon-γ (IFN-γ) genes was analyzed in peripheral blood mononuclear cells derived from 29 noninstitutionalized Down syndrome individuals and compared to that of 32 normal donors. Culture conditions were chosen that measure the transient, phytohemagglutinin-induced expression of IL-2 and IFN-γ mRNA, as well as the intactness of post-transcriptional and suppressor T cell-dependent mechanisms that control this expression. The latter was achieved by analyzing, respectively, the superinduction of IL-2 and IFN-γ mRNA occurring upon culture with cycloheximide or after low-dose γ-irradiation. A convenient, sensitive, and quantitative assay for specific mRNA was devised, suitable for measuring mRNA levels expressed in cells from 1 ml of peripheral blood. Analysis of individuals with Down syndrome revealed a pronounced decrease in inducibility of the IL-2 gene. By contrast, induction of IFN-γ mRNA was as vigorous as that observed for normal donors. In cells from trisomic subjects, superinduction of IFN-γ mRNA by cycloheximide was at least as extensive as for normal donors, while in the case of IL-2 mRNA, it was weaker. These abnormal patterns of IL-2 gene expression were seen irrespective of age. Our findings demonstrate a selective impairment of IL-2 gene expression in Down syndrome, rather than a general deficiency in helper T cells." @default.
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• W1991626677 date "1991-02-01" @default.
• W1991626677 modified "2023-10-13" @default.
• W1991626677 title "Aberrant regulation of interleukin-2 but not of interferon-γ gene expression in Down syndrome (trisomy 21)" @default.
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• W1991626677 doi "https://doi.org/10.1016/0090-1229(91)90140-6" @default.
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