TY  - JOUR
AU  - Teubner, Lisa
AU  - Frantz, Renate
AU  - La Pietra, Luigi
AU  - Hudel, Martina
AU  - Bazant, Jasmin
AU  - Lochnit, Günter
AU  - Eismann, Lena
AU  - Kramer, Günter
AU  - Chakraborty, Trinad
AU  - Abu Mraheil, Mobarak
TI  - SecA2 Associates with Translating Ribosomes and Contributes to the Secretion of Potent IFN-β Inducing RNAs.
JO  - International journal of molecular sciences
VL  - 23
IS  - 23
SN  - 1422-0067
CY  - Basel
PB  - Molecular Diversity Preservation International
M1  - DKFZ-2022-03040
SP  - 15021
PY  - 2022
N1  - DKFZ-ZMBH Alliance
AB  - Protein secretion plays a central role in modulating interactions of the human pathogen Listeria monocytogenes with its environment. Recently, secretion of RNA has emerged as an important strategy used by the pathogen to manipulate the host cell response to its advantage. In general, the Sec-dependent translocation pathway is a major route for protein secretion in L. monocytogenes, but mechanistic insights into the secretion of RNA by these pathways are lacking. Apart from the classical SecA1 secretion pathway, L. monocytogenes also encodes for a SecA paralogue (SecA2) which targets the export of a specific subset of proteins, some of which are involved in virulence. Here, we demonstrated that SecA2 co-sediments with translating ribosomes and provided evidence that it associates with a subset of secreted small non-coding RNAs (sRNAs) that induce high levels of IFN-β response in host cells. We found that enolase, which is translocated by a SecA2-dependent mechanism, binds to several sRNAs, suggesting a pathway by which sRNAs are targeted to the supernatant of L. monocytogenes.
KW  - IFN-beta (Other)
KW  - Listeria monocytogenes (Other)
KW  - SecA2 (Other)
KW  - secreted RNA (Other)
LB  - PUB:(DE-HGF)16
C6  - pmid:36499346
DO  - DOI:10.3390/ijms232315021
UR  - https://inrepo02.dkfz.de/record/186246
ER  -