PuSH - Publication Server of Helmholtz Zentrum München: High levels of eukaryotic Initiation Factor 6 (eIF6) are required for immune system homeostasis and for steering the glycolytic flux of TCR-stimulated CD4<sup>+</sup> T cells in both mice and humans.

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Manfrini, N.* ; Ricciardi, S.* ; Miluzio, A.* ; Fedeli, M.* ; Scagliola, A.* ; Gallo, S.* ; Brina, D.* ; Adler, T. ; Busch, D.H.* ; Gailus-Durner, V. ; Fuchs, H. ; Hrabě de Angelis, M. ; Biffo, S.*

High levels of eukaryotic Initiation Factor 6 (eIF6) are required for immune system homeostasis and for steering the glycolytic flux of TCR-stimulated CD4⁺ T cells in both mice and humans.

Dev. Comp. Immunol. 77, 69-76 (2017)

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	Open Access Green

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Eukaryotic Initiation Factor 6 (eIF6) is required for 60S ribosomal subunit biogenesis and efficient initiation of translation. Intriguingly, in both mice and humans, endogenous levels of eIF6 are detrimental, as they act as tumor and obesity facilitators, raising the question on the evolutionary pressure that maintains high eIF6 levels. Here we show that in mice and humans, high levels of eIF6 are required for proper immune functions. First, eIF6 heterozygous (het) mice show an increased mortality during viral infection and a reduction of peripheral blood CD4(+) Effector Memory T cells. In human CD4(+) T cells, eIF6 levels rapidly increase upon T-cell receptor activation and drive the glycolytic switch and the acquisition of effector functions. Importantly, in CD4(+) T cells, eIF6 levels control interferon-γ (IFN-γ) secretion without affecting proliferation. In conclusion, the immune system has a high evolutionary pressure for the maintenance of a dynamic and powerful regulation of the translational machinery.

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Publication type Article: Journal article

Document type Scientific Article

Corresponding Author

Keywords Cd4(+) T Cells ; Effector Functions ; Glycolysis ; Immune System ; Metabolism ; Eif6; Translation Initiation; Diamond-syndrome; In-vivo; Protein; Growth; Progression; Metabolism; P27(bbp); Cancer; Proliferation

ISSN (print) / ISBN 0145-305x

e-ISSN 1879-0089

Journal Developmental and comparative immunology

Quellenangaben Volume: 77, Pages: 69-76

Publisher Elsevier

Publishing Place Amsterdam [u.a.]

Non-patent literature Publications

Reviewing status Peer reviewed

Institute(s) Lung Health and Immunity (LHI)
Institute of Experimental Genetics (IEG)

PuSH - Publication Server of Helmholtz Zentrum München

High levels of eukaryotic Initiation Factor 6 (eIF6) are required for immune system homeostasis and for steering the glycolytic flux of TCR-stimulated CD4+ T cells in both mice and humans.

High levels of eukaryotic Initiation Factor 6 (eIF6) are required for immune system homeostasis and for steering the glycolytic flux of TCR-stimulated CD4⁺ T cells in both mice and humans.