Human Sialic acid-binding Ig-like lectin 9(SIGLEC9) ELISA kit

Code CSB-EL021303HU
Size 96T,5×96T,10×96T
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Trial Size 24T ELISA Kit Trial Size (Only USD$150/ kit)
* The sample kit cost can be deducted from your subsequent orders of 96T full size kits of the same analyte at 1/5 per kit, until depleted in 6 months. Apply now

Product Details

Target Name
sialic acid binding Ig-like lectin 9
Alternative Names
CD329 ELISA Kit; CDw329 ELISA Kit; FOAP 9 ELISA Kit; OB binding protein like ELISA Kit; OBBP LIKE ELISA Kit; Protein FOAP 9 ELISA Kit; Protein FOAP-9 ELISA Kit; sialic acid binding Ig like lectin 9 ELISA Kit; Sialic acid-binding Ig-like lectin 9 ELISA Kit; Sialic acid-binding immunoglobulin like lectin 9 ELISA Kit; SIGL9_HUMAN ELISA Kit; Siglec 9 ELISA Kit; Siglec-9 ELISA Kit; SIGLEC9 ELISA Kit
Uniprot No.
Homo sapiens (Human)
Sample Types
serum,plasma,tissue homogenates.
Detection Range
125 pg/ml-8000 pg/ml
31.25 pg/ml
Assay Time
Sample Volume
Detection Wavelength
450 nm
Research Area
Assay Principle
and FAQs
Store at 2-8°C. Please refer to protocol.
Lead Time
3-5 working days after you place the order, and it takes another 3-5 days for delivery via DHL or FedEx

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Target Background

(From Uniprot)
Putative adhesion molecule that mediates sialic-acid dependent binding to cells. Preferentially binds to alpha-2,3- or alpha-2,6-linked sialic acid. The sialic acid recognition site may be masked by cis interactions with sialic acids on the same cell surface.
Gene References into Functions
  1. The SIGLEC9 rs2075803 G/rs2258983 A haplotype, which corresponds to a Siglec-9 variant that is less effective at suppressing inflammatory response, may be a risk factor for the development of emphysema. PMID: 27878892
  2. Glycophorin A, the most abundant sialoglycoprotein on erythrocytes, engaged neutrophil Siglec-9, a sialic acid-recognizing receptor known to dampen innate immune cell activation. These studies demonstrate a previously unsuspected role for erythrocytes in suppressing neutrophils ex vivo and in vitro and help explain why neutrophils become easily activated after separation from whole blood. PMID: 28416510
  3. Data suggest that sialic acid-binding Ig-like lectin-9 (Siglec-9)may serve as a potential diagnostic and therapeutic target for rheumatoid arthritis (RA). PMID: 28273363
  4. The mechanism of the Siglec-9 and AOC3 interaction is mediated both by protein-sugar interactions via the V domain and by the protein-protein interactions via the C22 Siglec9 domain. PMID: 27893774
  5. This work defines a critical role for aberrantly glycosylated MUC1 and identifies an activating pathway that follows engagement of Siglec-9. PMID: 27595232
  6. Constitutively expressed Siglec-9 inhibits LPS-induced CCR7, but enhances IL-4-induced CD200R expression in human macrophages. PMID: 26923638
  7. Ligands for Siglec-8 and Siglec-9 may regulate the function of eosinophils, mast cells, neutrophils, and other cells in sinus mucosa. PMID: 26694037
  8. Inflammation results in up-regulation of immuneinhibitory Siglec-8 and Siglec-9 sialoglycan ligands on human airways. PMID: 25747723
  9. a polymorphism that reduced Siglec-9 binding to carcinomas was associated with improved early survival in non-small-cell lung cancer patients PMID: 25225409
  10. Dasatinib enhances migration of monocyte-derived dendritic cells by reducing phosphorylation of inhibitory immune receptors Siglec-9 and Siglec-3. PMID: 24882272
  11. Protein degradation of focal adhesion kinase and related molecules was induced by Siglec-9 binding to its counterreceptors via sialylglycoconjugates, leading to the modulation of adhesion kinetics of cancer cells. PMID: 24145038
  12. Siglec-9 expressed on immune cells may play a role as a potential counterreceptor for MUC1 and that this signaling may be another MUC1-mediated pathway and function in parallel with a growth factor-dependent pathway. PMID: 24045940
  13. The Siglec-9 peptide binding to the enzymatic groove of VAP-1 can be used for imaging conditions, such as inflammation and cancer. PMID: 21821708
  14. Siglec-9 A391C was the only polymorphism related to TCR-mediated signaling in human Siglec-9, resulting in less inhibition compared to the wild type. PMID: 20733319
  15. These results suggest that Siglec-9 expressed on DCs is involved in immunoregulation through ligation with mucins in an epithelial cancer patient. PMID: 20971061
  16. MUC16-Siglec-9 binding likely mediates inhibition of anti-tumor immune responses. PMID: 20497550
  17. Septic shock patients exhibit different ex vivo death responses of blood neutrophils after Siglec-9 ligation early in shock. PMID: 19295491
  18. Binding studies on recombinant human Siglec-9 show recognition of both Neu5Ac and Neu5Gc; in striking contrast, chimpanzee and gorilla Siglec-9 strongly prefer binding Neu5Gc. PMID: 14693915
  19. Siglec-9 can inhibit Fc epsilon receptor I-mediated serotonin release from rat basophilic leukemia cells and recruit the tyrosine phosphatases SHP-1 and SHP-2. PMID: 15557178
  20. data suggest that apoptotic (ROS- and caspase-dependent) and nonapoptotic (ROS-dependent) death pathways are initiated in neutrophils via Siglec-9 PMID: 15827126
  21. Siglecs-9 did not interact with sulfate derivatives of LacNAc and sulfated oligosaccharides containing sialic acid. PMID: 16732727
  22. The Siglec-9 provides not only a useful marker for certain subsets of AML, but also a potential therapeutic target. PMID: 16828866
  23. These results demonstrate that Siglec-9 enhances the production of the anti-inflammatory cytokine IL-10 in macrophages. PMID: 18325328
  24. A review of the cytotoxic effects of natural anti-Siglec9 autoantibodies on both neutrophils and eosinophils. PMID: 18558361
  25. Increased bacterial survival are also facilitated by group b Streptococcus sialylated capsular polysaccharide interactions with Siglec-9. PMID: 19196661
  26. Data suggest that age-specific interactions between Siglec-9 and SHP-1 may influence the altered inflammatory responsiveness and longevity of neonatal polymorphonuclear neutrophils. PMID: 19542910

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Subcellular Location
Membrane; Single-pass type I membrane protein.
Protein Families
Immunoglobulin superfamily, SIGLEC (sialic acid binding Ig-like lectin) family
Tissue Specificity
Expressed by peripheral blood leukocytes (neutrophils and monocytes but not eosinophils). Found in liver, fetal liver, bone marrow, placenta, spleen and in lower levels in skeletal muscle, fetal brain, stomach, lung, thymus, prostate, brain, mammary, adre
Database Links

HGNC: 10878

OMIM: 605640

KEGG: hsa:27180

STRING: 9606.ENSP00000413861

UniGene: Hs.245828

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