Title : TLR9 activation induces aberrant IgA glycosylation via APRIL- and IL-6-mediated pathways in IgA nephropathy.

Pub. Date : 2020 Feb

PMID : 31748116






9 Functional Relationships(s)
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Compound Name
Protein Name
Organism
1 Galactose-deficient IgA1 (Gd-IgA1) plays a crucial role in the development of IgA nephropathy (IgAN). Gadolinium immunoglobulin heavy constant alpha 1 Homo sapiens
2 Galactose-deficient IgA1 (Gd-IgA1) plays a crucial role in the development of IgA nephropathy (IgAN). Gadolinium immunoglobulin heavy constant alpha 1 Homo sapiens
3 However, the pathogenic mechanisms driving Gd-IgA1 production have not been fully elucidated. Gadolinium immunoglobulin heavy constant alpha 1 Homo sapiens
4 Innate-immune activation via Toll-like receptor 9 (TLR9) is known to be involved in Gd-IgA1 production. Gadolinium immunoglobulin heavy constant alpha 1 Homo sapiens
5 A proliferation inducing ligand (APRIL) and IL-6 are also known to enhance Gd-IgA1 synthesis in IgAN. Gadolinium immunoglobulin heavy constant alpha 1 Homo sapiens
6 However, siRNA knock-down of APRIL completely suppressed overproduction of Gd-IgA1 induced by IL-6. Gadolinium immunoglobulin heavy constant alpha 1 Homo sapiens
7 Neutralization of IL-6 decreased CpG-oligonucleotide-induced overproduction of Gd-IgA1. Gadolinium immunoglobulin heavy constant alpha 1 Homo sapiens
8 Furthermore, APRIL and IL-6 pathways each independently mediated TLR9-induced overproduction of Gd-IgA1. Gadolinium immunoglobulin heavy constant alpha 1 Homo sapiens
9 Hence, APRIL and IL-6 synergistically, as well as independently, enhance synthesis of Gd-IgA1. Gadolinium immunoglobulin heavy constant alpha 1 Homo sapiens