| 2001 |
Siglec-10 is a type I transmembrane protein with five extracellular Ig-like domains and a cytoplasmic tail containing immunoreceptor tyrosine-based inhibitory motifs (ITIMs); it mediates sialic acid-dependent binding to human erythrocytes and soluble sialoglycoconjugates, establishing it as an inhibitory lectin receptor. |
cDNA cloning, binding assays with erythrocytes and sialoglycoconjugates, flow cytometry |
The Biochemical journal |
High |
11284738 11358961 11733002
|
| 2001 |
The ITIM tyrosines Y597 and Y667 in the Siglec-10 cytoplasmic tail are phosphorylated by tyrosine kinases; SHP-1 interacts with Y667 and SHP-2 interacts with Y667 and at least one additional tyrosine, establishing Siglec-10 as an inhibitory receptor that recruits SHP phosphatases. |
In vitro kinase assay with wild-type and Y→F mutant cytoplasmic domain constructs; cell extract pulldown assays |
European journal of biochemistry |
High |
11733002
|
| 2002 |
Siglec-10 recruits SHP-1 to its cytoplasmic tail in a tyrosine phosphorylation-dependent manner; mutational analysis identified ITIM Y609 of Siglec-10 and the N-terminal SH2 domain of SHP-1 as critical for this interaction. Siglec-10 does not bind SAP/SH2D1A, distinguishing the CD150-like motif as a docking site for other mediators. |
Yeast three-hybrid cloning of splice variant, Western blot, site-directed mutagenesis of ITIM tyrosines |
Biochemical and biophysical research communications |
High |
12163025
|
| 2009 |
CD24 associates with the DAMPs HMGB1, HSP70, and HSP90 and negatively regulates their stimulatory activity; CD24 interaction with Siglec-10 (Siglec-G in mice) inhibits NF-κB activation and selectively suppresses danger-associated (but not pathogen-associated) innate immune responses. |
Co-immunoprecipitation, CD24-deficient mouse models, NF-κB reporter assays, genetic epistasis (CD24/Siglec-G double knockout) |
Science |
High |
19264983
|
| 2009 |
Siglec-10 on leukocytes binds VAP-1 (vascular adhesion protein-1) on inflamed endothelium, identified by phage display; this interaction was verified by adhesion assays and molecular modeling. Siglec-10 serves as a substrate for VAP-1's amine oxidase activity, leading to increased hydrogen peroxide production, implicating the Siglec-10–VAP-1 axis in lymphocyte adhesion and modulation of the inflammatory microenvironment. |
Phage display screening, adhesion assays, molecular modeling, hydrogen peroxide production assay |
Blood |
High |
19861682
|
| 2013 |
Soluble CD52 released by phospholipase C from CD52hi T cells binds Siglec-10 on T cells and impairs phosphorylation of TCR-associated kinases Lck and ZAP-70, thereby suppressing T cell activation. This defines a ligand-receptor mechanism of T cell regulation distinct from Foxp3+ Tregs. |
Binding assay (soluble CD52-Siglec-10), phosphokinase assays (Lck, ZAP-70), T cell suppression assays, adoptive transfer in NOD mice |
Nature immunology |
High |
23685786
|
| 2014 |
Campylobacter jejuni flagella bearing pseudaminic acid residues bind Siglec-10 on dendritic cells; overexpression of Siglec-10 in cells infected with C. jejuni increased IL-10 production in a p38 MAPK-dependent manner, defining a novel flagellin-Siglec-10 immune modulatory axis. |
C. jejuni isogenic mutant analysis, Siglec-10 overexpression in cells, p38 inhibitor experiments, flow cytometry |
The Journal of infectious diseases |
Medium |
24823621
|
| 2016 |
Placental CD24 interacts with Siglec-10 via terminal sialic acid glycan residues in an EDTA-sensitive manner; CD24 did not interact with Siglec-3 or Siglec-5, establishing specificity. Co-localization of CD24 and Siglec-10 was observed at the fetal-maternal interface, suggesting a role in immune tolerance during pregnancy. |
Affinity purification of placental CD24, ELISA binding assays, EDTA inhibition, immunohistochemistry, immunofluorescence co-localization |
Histochemistry and cell biology |
Medium |
28012129
|
| 2017 |
Porcine Siglec-10 functions as an alternative receptor for PRRSV; Siglec-10-expressing cells showed significantly enhanced PRRSV infection in a CD163-dependent manner, and Siglec-10 was demonstrated to mediate endocytosis of PRRSV, establishing its role in viral entry. |
Transfection of Siglec-10 into PK15-CD163 cells, virus infection assays, TCID50 measurement, endocytosis assays |
The Journal of general virology |
Medium |
28742001
|
| 2018 |
Soluble CD52 binds specifically to the proinflammatory Box B domain of HMGB1; this CD52-HMGB1 complex then promotes binding of the CD52 N-linked glycan (α-2,3 sialic acid linked to galactose) to Siglec-10. This triggers tyrosine phosphorylation of Siglec-10, recruitment of SHP1 phosphatase to Siglec-10's ITIM, and interaction of Siglec-10 with the TCR, suppressing T cell function. |
CD52-Fc binding assays to Siglec-10 and HMGB1 domains, anti-HMGB1 antibody blockade, co-immunoprecipitation (CD52-HMGB1-Siglec-10-SHP1-TCR complex), tyrosine phosphorylation assay |
Proceedings of the National Academy of Sciences of the United States of America |
High |
29997173
|
| 2019 |
Tumor-expressed CD24 engages Siglec-10 on tumor-associated macrophages to promote immune evasion; genetic ablation or antibody blockade of either CD24 or Siglec-10 robustly augments macrophage phagocytosis of human tumors expressing CD24. In vivo, CD24 or Siglec-10 blockade resulted in macrophage-dependent reduction of tumor growth. |
Genetic ablation (CRISPR knockout of CD24 or Siglec-10), monoclonal antibody blockade, phagocytosis assays, in vivo xenograft mouse models |
Nature |
High |
31367043
|
| 2020 |
Structural and biophysical analysis of Siglec-10 interactions with naturally occurring sialoglycans provided the first molecular insights into ligand recognition; spectroscopic (NMR), computational, and biophysical approaches defined glycan epitope mapping and 3D complex conformations of Siglec-10 with sialoglycans. |
NMR spectroscopy, computational modeling, biophysical binding assays (STD-NMR, molecular dynamics) |
iScience |
Medium |
32629603
|
| 2020 |
A GBS-associated rare variant encoding R47Q substitution in the ligand-binding domain of Siglec-10 impairs binding to gangliosides; homology modeling showed marked alteration of the ligand-binding site, indicating that Siglec-10 suppresses antibody production to gangliosides and defects in its function predispose to Guillain-Barré syndrome. |
Recombinant Siglec-10 protein binding assays, rare variant analysis, homology modeling of ligand-binding site |
Journal of autoimmunity |
Medium |
33223341
|
| 2023 |
PU.1 transcription factor directly targets and drives Siglec-10 expression in macrophages; PU.1 knockdown reduces Siglec-10 levels, enhances macrophage phagocytosis, and inhibits glioma tumor formation in vivo, establishing a PU.1–Siglec-10 axis in macrophage immune checkpoint regulation. |
PU.1 knockdown (RNA-seq, qRT-PCR, Western blot), luciferase assay, chromatin immunoprecipitation (ChIP), flow cytometry, in vivo tumor models |
International immunopharmacology |
Medium |
41115355
|
| 2024 |
Bacterial pseudaminic acid (Pse) on pathogen exopolysaccharide engages Siglec-10 on macrophages via the 7-N-acetyl group of Pse; this interaction stimulates macrophages to secrete IL-10 and suppresses phagocytosis against bacteria. |
Carbohydrate-receptor binding assay (identifying critical 7-N-acetyl group), IL-10 secretion assay, phagocytosis assay, blocking experiment with Pse-binding protein |
Chemical communications |
Medium |
38372418
|
| 2024 |
CLL cells suppress CAR T-cell function via CD24 and CD52 — Siglec-10 ligands — expressed on their surface; CD40 stimulation of CLL cells downregulated CD24 and CD52 (prevented by the SRC kinase inhibitor dasatinib), and blocking CD24 and/or CD52 markedly reduced CAR T-cell dysfunction in coculture, demonstrating that CLL-T cell interaction through Siglec-10 ligands mediates T-cell suppression. |
Co-culture assays, CD40 stimulation, SRC kinase inhibitor (dasatinib) experiments, transcriptome profiling, CD24/CD52 blocking antibodies, flow cytometry |
Blood advances |
Medium |
39042920
|
| 2025 |
Integrin α3β1 (composed of ITGA3 and ITGB1) on PDAC cells is a sialylated glycoprotein ligand for Siglec-10 on tumor-associated macrophages; the Siglec-10–α3β1 interaction suppresses macrophage phagocytosis, and disruption with monoclonal antibodies restores phagocytosis, reduces PDAC tumor growth in xenograft and Siglec-10 transgenic mouse models. |
Ligand identification, Co-IP/pulldown, monoclonal antibody blockade, phagocytosis assays, PDAC xenograft and transgenic mouse models |
Cancer research |
High |
41182080
|
| 2026 |
Crystal structures of Siglec-10 bound to sialyllactose (SL) ligands revealed that domain 1 (D1) engages SL using a non-conserved, selectivity-determining CC' loop; Siglec-10 binds α2,3- and α2,6-linked SL with similar affinities. Homodimerization of Siglec-10 is mediated by a hydrophobic domain 2 (D2) interface, and mutation of this interface ablates cellular binding similarly to mutations in the glycan-binding site. Knockout of CD24 did not affect binding to breast cancer cells, indicating Siglec-10 has a broader glycoprotein recognition profile. |
X-ray crystallography, mutagenesis of CC' loop and D2 interface, cellular binding assays, CD24 knockout |
Structure |
High |
41747717
|
| 2025 |
X-ray crystallography of Siglec-10 identified two arginine residues in the binding site (canonical R119 and non-canonical R127) that interact with the carboxyl group of sialic acid; STD-NMR confirmed R119 is essential for binding sialoglycans in solution, while cell-based assays showed both R119 and R127 are critical for cellular glycocalyx recognition. CD24 was ruled out as a principal Siglec-10 ligand on T cells and breast cancer cells, despite high CD24 expression. |
X-ray crystallography, STD-NMR, site-directed mutagenesis (R119A, R127A), cell-based binding assays with primary human T cells and engineered monocytic lines |
bioRxivpreprint |
Medium |
bio_10.1101_2025.06.10.658867
|
| 2024 |
Molecular dynamics simulations defined atomistic interactions between CD52 glycans, HMGB1 Box B domain, and Siglec-10; O-glycosylation of CD52 was localized to T8, and terminal α-2,3-linked sialic acids on the N-linked glycan were confirmed essential for Siglec-10 binding and T-cell suppression. |
High-resolution mass spectrometry (glycopeptide/released glycan characterization), molecular dynamics simulation, O-glycosylation site mapping |
bioRxivpreprint |
Medium |
bio_10.1101_2024.10.24.620132
|