Journal Article

DZNE-2022-00502

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png M1-linked ubiquitination facilitates NF-κB activation and survival during sterile inflammation.

Aalto, A. ; Martínez-Chacón, G. ; Kietz, C. ; Tsyganova, N. ; Kreutzer, J. ; Kallio, P. ; Broemer, M.DZNE* ; Meinander, A.

2022
Wiley-Blackwell Oxford [u.a.]

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Please use a persistent id in citations: doi:10.1111/febs.16425

Abstract: Methionine 1 (M1)-linked ubiquitination plays a key role in the regulation of inflammatory nuclear factor-κB (NF-κB) signalling and is important for clearance of pathogen infection in Drosophila melanogaster. M1-linked ubiquitin (M1-Ub) chains are assembled by the linear ubiquitin E3 ligase (LUBEL) in flies. Here, we have studied the role of LUBEL in sterile inflammation induced by different types of cellular stresses. We have found that the LUBEL catalyses formation of M1-Ub chains in response to hypoxic, oxidative and mechanical stress conditions. LUBEL is shown to be important for flies to survive low oxygen conditions and paraquat-induced oxidative stress. This protective action seems to be driven by stress-induced activation of the NF-κB transcription factor Relish via the immune deficiency (Imd) pathway. In addition to LUBEL, the intracellular mediators of Relish activation, including the transforming growth factor activating kinase 1 (Tak1), Drosophila inhibitor of apoptosis (IAP) Diap2, the IκB kinase γ (IKKγ) Kenny and the initiator caspase Death-related ced-3/Nedd2-like protein (Dredd), but not the membrane receptor peptidoglycan recognition protein (PGRP)-LC, are shown to be required for sterile inflammatory response and survival. Finally, we showed that the stress-induced upregulation of M1-Ub chains in response to hypoxia, oxidative and mechanical stress is also induced in mammalian cells and protects from stress-induced cell death. Taken together, our results suggest that M1-Ub chains are important for NF-κB signalling in inflammation induced by stress conditions often observed in chronic inflammatory diseases and cancer.

Keyword(s): Animals (MeSH) ; Drosophila: metabolism (MeSH) ; Drosophila Proteins: genetics (MeSH) ; Drosophila Proteins: metabolism (MeSH) ; Drosophila melanogaster: metabolism (MeSH) ; Inflammation: genetics (MeSH) ; MAP Kinase Kinase Kinases: metabolism (MeSH) ; Mammals: metabolism (MeSH) ; Methionine: metabolism (MeSH) ; NF-kappa B: genetics (MeSH) ; NF-kappa B: metabolism (MeSH) ; Ubiquitin: metabolism (MeSH) ; Ubiquitination (MeSH) ; NF-κB ; cell stress ; hypoxia ; linear ubiquitin chain ; sterile inflammation

Note: CC BY-NC-ND: https://creativecommons.org/licenses/by-nc-nd/4.0/

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Contributing Institute(s):

1. AG Brömer (AG Brömer 2)

Research Program(s):

1. 351 - Brain Function (POF4-351) (POF4-351)

Appears in the scientific report 2022

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Database coverage:
; ; ; BIOSIS Previews ; Biological Abstracts ; Clarivate Analytics Master Journal List ; Current Contents - Life Sciences ; DEAL Wiley ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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