PLD3 and PLD4 are single-stranded acid exonucleases that regulate endosomal nucleic-acid sensing

AL Gavin, D Huang, C Huber, A Mårtensson… - Nature …, 2018 - nature.com
The sensing of microbial genetic material by leukocytes often elicits beneficial pro-
inflammatory cytokines, but dysregulated responses can cause severe pathogenesis …

[HTML][HTML] Cleavage of DNA and RNA by PLD3 and PLD4 limits autoinflammatory triggering by multiple sensors

AL Gavin, D Huang, TR Blane, TC Thinnes… - Nature …, 2021 - nature.com
Abstract Phospholipase D3 (PLD3) and PLD4 polymorphisms have been associated with
several important inflammatory diseases. Here, we show that PLD3 and PLD4 digest ssRNA …

Structural analysis of PLD3 reveals insights into the mechanism of lysosomal 5′ exonuclease-mediated nucleic acid degradation

Y Roske, C Cappel, N Cremer, P Hoffmann… - Nucleic Acids …, 2024 - academic.oup.com
The phospholipase D (PLD) family is comprised of enzymes bearing phospholipase activity
towards lipids or endo-and exonuclease activity towards nucleic acids. PLD3 is synthesized …

The solute carrier SLC15A4 is required for optimal trafficking of nucleic acid–sensing TLRs and ligands to endolysosomes

I Rimann, R Gonzalez-Quintial… - Proceedings of the …, 2022 - National Acad Sciences
A function-impairing mutation (feeble) or genomic deletion of SLC15A4 abolishes responses
of nucleic acid–sensing endosomal toll-like receptors (TLRs) and significantly reduces …

Negative regulation of signaling by a soluble form of toll‐like receptor 9

A Chockalingam, JL Cameron… - European journal of …, 2011 - Wiley Online Library
Nucleic acid structures are highly conserved through evolution and when self nucleic acids
are aberrantly detected by toll‐like receptors (TLRs) they contribute to autoimmune disease …

TLR9 is localized in the endoplasmic reticulum prior to stimulation

CA Leifer, MN Kennedy, A Mazzoni… - The journal of …, 2004 - journals.aai.org
In mammals, 10 TLRs recognize conserved pathogen-associated molecular patterns,
resulting in the induction of inflammatory innate immune responses. One of these, TLR9, is …

[HTML][HTML] Short single-stranded DNA degradation products augment the activation of Toll-like receptor 9

J Pohar, D Lainšček, K Ivičak-Kocjan… - Nature …, 2017 - nature.com
Toll-like receptors encounter a diversity of degradation products in endosomes. TLR7 and
TLR8 have been shown to be activated by RNA degradation products. Here we show that …

Nucleic acid sensing Toll-like receptors in autoimmunity

SE Ewald, GM Barton - Current opinion in immunology, 2011 - Elsevier
Trafficking and activation of the nucleic acid sensing TLRs is subject to unique regulatory
requirements imposed by the risk of self-recognition. Like all TLRs these receptors traffick …

Proteolytic cleavage in an endolysosomal compartment is required for activation of Toll-like receptor 9

B Park, MM Brinkmann, E Spooner, CC Lee… - Nature …, 2008 - nature.com
Toll-like receptors (TLRs) activate the innate immune system in response to pathogens.
Here we show that TLR9 proteolytic cleavage is a prerequisite for TLR9 signaling. Inhibition …

[HTML][HTML] DNase II-dependent DNA digestion is required for DNA sensing by TLR9

MP Chan, M Onji, R Fukui, K Kawane, T Shibata… - Nature …, 2015 - nature.com
DNase II digests DNA in endolysosomes. In the absence of DNase II, undigested DNA
activates cytoplasmic DNA-sensing pathways. Little is known, however, about the role of …