TY  - JOUR
A1  - Murakawa, Yasuhiro
A1  - Hinz, Michael
A1  - Mothes, Janina
A1  - Schuetz, Anja
A1  - Uhl, Michael
A1  - Wyler, Emanuel
A1  - Yasuda, Tomoharu
A1  - Mastrobuoni, Guido
A1  - Friedel, Caroline C.
A1  - Dölken, Lars
A1  - Kempa, Stefan
A1  - Schmidt-Supprian, Marc
A1  - Blüthgen, Nils
A1  - Backofen, Rolf
A1  - Heinemann, Udo
A1  - Wolf, Jana
A1  - Scheidereit, Claus
A1  - Landthaler, Markus
T1  - RC3H1 post-transcriptionally regulates A20 mRNA and modulates the activity of the IKK/NF-\(\kappa\)B pathway
JF  - Nature Communications
N2  - The RNA-binding protein RC3H1 (also known as ROQUIN) promotes TNF\(\alpha\) mRNA decay via a 3'UTR constitutive decay element (CDE). Here we applied PAR-CLIP to human RC3H1 to identify ~3,800 mRNA targets with >16,000 binding sites. A large number of sites are distinct from the consensus CDE and revealed a structure-sequence motif with U-rich sequences embedded in hairpins. RC3H1 binds preferentially short-lived and DNA damage-induced mRNAs, indicating a role of this RNA-binding protein in the post-transcriptional regulation of the DNA damage response. Intriguingly, RC3H1 affects expression of the NF-\(\kappa\)B pathway regulators such as I\(\kappa\)B\(\alpha\) and A20. RC3H1 uses ROQ and Zn-finger domains to contact a binding site in the A20 3'UTR, demonstrating a not yet recognized mode of RC3H1 binding. Knockdown of RC3H1 resulted in increased A20 protein expression, thereby interfering with I\(\kappa\)B kinase and NF-\(\kappa\)B activities, demonstrating that RC3H1 can modulate the activity of the IKK/NF-\(\kappa\)B pathway.
KW  - large gene lists
KW  - decay
KW  - identification
KW  - stress
KW  - binding protein
KW  - RQQ domain
KW  - autoimmunity
KW  - complex
KW  - degradation
KW  - motifs
Y1  - 2015
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-151596
VL  - 6
IS  - 7367
ER  - 
TY  - JOUR
A1  - Lodha, Manivel
A1  - Erhard, Florian
A1  - Dölken, Lars
A1  - Prusty, Bhupesh K.
T1  - The hidden enemy within: non-canonical peptides in virus-induced autoimmunity
JF  - Frontiers in Microbiology
N2  - Viruses play a key role in explaining the pathogenesis of various autoimmune disorders, whose underlying principle is defined by the activation of autoreactive T-cells. In many cases, T-cells escape self-tolerance due to the failure in encountering certain MHC-I self-peptide complexes at substantial levels, whose peptides remain invisible from the immune system. Over the years, contribution of unstable defective ribosomal products (DRiPs) in immunosurveillance has gained prominence. A class of unstable products emerge from non-canonical translation and processing of unannotated mammalian and viral ORFs and their peptides are cryptic in nature. Indeed, high throughput sequencing and proteomics have revealed that a substantial portion of our genomes comprise of non-canonical ORFs, whose generation is significantly modulated during disease. Many of these ORFs comprise short ORFs (sORFs) and upstream ORFs (uORFs) that resemble DRiPs and may hence be preferentially presented. Here, we discuss how such products, normally “hidden” from the immune system, become abundant in viral infections activating autoimmune T-cells, by discussing their emerging role in infection and disease. Finally, we provide a perspective on how these mechanisms can explain several autoimmune disorders in the wake of the COVID-19 pandemic.
KW  - viruses
KW  - cryptic peptides
KW  - autoimmunity
KW  - defective ribosomal products
KW  - non-canonical translation
KW  - COVID-19
Y1  - 2022
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-263053
SN  - 1664-302X
VL  - 13
ER  -