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RNA helicase EIF4A1-mediated translation is essential for the GC response

ABSTRACT: EIF4A1 and cofactors EIF4B and EIF4H have been well characterised in cancers, including B cell malignancies, for their ability to promote the translation of oncogenes with structured 5’ untranslated regions. However, very little is known of their roles in non-malignant cells. Using mouse models to delete Eif4a1, Eif4b or Eif4h in B cells we show that EIF4A1, but not EIF4B or EIF4H, is essential for B cell development and the germinal centre response. Following B cell activation in vitro, EIF4A1 facilitates an increased rate of protein synthesis, MYC expression and expression of cell cycle regulators. However, EIF4A1-deficient cells remain viable whereas inhibition of EIF4A1 and EIF4A2 by Hippuristanol treatment induces cell death.

INSTRUMENT(S): Q Exactive

ORGANISM(S): Mus Musculus (mouse)

TISSUE(S): Spleen, B Cell

SUBMITTER: Andrew Howden

LAB HEAD: Professor Martin Turner

PROVIDER: PXD046710 | Pride | 2023-11-09

REPOSITORIES: Pride

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RNA helicase EIF4A1-mediated translation is essential for the GC response

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