Human Siglec 9 Recombinant Rabbit Monoclonal Antibody [PSH11-90] - BSA and Azide free (Detector)
Overview
Product Name
Human Siglec 9 Recombinant Rabbit Monoclonal Antibody [PSH11-90] - BSA and Azide free (Detector)
Antibody Type
Recombinant Rabbit monoclonal Antibody
Immunogen
Recombinant protein within Human Siglec 9 aa 18-348 (HA211074).
Product Specificity
Siglec 9 Rabbit mAb [PSH11-90] detects endogenous levels of total Siglec 9 protein and does not cross-react with Siglec 7 protein.
Species Reactivity
Human
Validated Applications
ELISA(Det)
Positive Control
Recombinant Human Siglec 9 protein (HA211074).
Conjugation
unconjugated
Clone Number
PSH11-90
Product Features
Form
Liquid
Concentration
1mg/ml
Storage Instructions
Store at +4℃ after thawing. Aliquot store at -20℃. Avoid repeated freeze / thaw cycles.
Storage Buffer
1*PBS (pH7.4).
Isotype
IgG
Purification Method
Protein A affinity purified.
Application Dilution
-
ELISA(Det)
-
Use at an assay dependent concentration. Can be paired for Sandwich ELISA with Rabbit monoclonal [PSH11-89] to Human Siglec 9 antibody (Capture) (HA723397) and Recombinant Human Siglec 9 protein (HA211074) as the standard. The reference range value is 31.3-4,000 pg/ml.
Target
Function
Sialic acid-binding Ig-like lectin 9 is a protein that in humans is encoded by the SIGLEC9 gene. 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. 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, adrenal gland, colon, trachea, cerebellum, testis, small intestine and spinal cordon.
Background References
1. Mei Y et al. Siglec-9 acts as an immune-checkpoint molecule on macrophages in glioblastoma, restricting T-cell priming and immunotherapy response. Nat Cancer. 2023 Sep
2. Wang JHS et al. Development of Effective Siglec-9 Antibodies Against Cancer. Curr Oncol Rep. 2023 Jan
Subcellular Location
Membrane.
UNIPROT
Synonyms
CD329 antibody
CDw329 antibody
FOAP 9 antibody
OB binding protein like antibody
OBBP LIKE antibody
Protein FOAP 9 antibody
Protein FOAP-9 antibody
sialic acid binding Ig like lectin 9 antibody
Sialic acid-binding Ig-like lectin 9 antibody
Sialic acid-binding immunoglobulin like lectin 9 antibody
ExpandImages
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![Sandwich ELISA analysis of human Siglec 9 matched pair antibodies<br />Capture: <a href="/products/HA723397" style="font-weight: bold;text-decoration: underline;">HA723397</a>, Siglec 9 Rabbit mAb [PSH11-89]<br />Detector: <a href="/products/HA723398" style="font-weight: bold;text-decoration: underline;">HA723398</a>, Siglec 9 Rabbit mAb [PSH11-90]<br /><br />Elisa assay was performed by coating wells of a 96-well plate with 50 µl per well of capture antibody (<a href="/products/HA723397" style="font-weight: bold;text-decoration: underline;">HA723397</a>) diluted in carbonate/bicarbonate buffer, at a concentration of 2 µg/mL overnight at 4℃. Wells of the plate were washed, blocked with 150 µl 0.05% tween-20 1% BSA blocking buffer, and incubated with serial diluted Recombinant Human Siglec 9 protein (<a href="/products/HA211074" style="font-weight: bold;text-decoration: underline;">HA211074</a>) starting from 4,000 pg/ml to 0 pg/ml and detect antibody (<a href="/products/HA723398" style="font-weight: bold;text-decoration: underline;">HA723398</a>, Biotin, 0.2 µg/ml) for 1 hour at 30℃ with shaking. Then the plate was washed and incubated with 50 µl per well of SA-HRP for 0.5 hour at 30℃ with shaking. Detection was performed using an Ultra TMB Substrate for 10 minutes at room temperature in the dark. The reaction was stopped with sulfuric acid and absorbances were read on a spectrophotometer at 450 nm.](https://storage.huabio.cn/huabio/productImg/HA723398_1.png?v=20260429161918)
Sandwich ELISA analysis of human Siglec 9 matched pair antibodies
Capture: HA723397, Siglec 9 Rabbit mAb [PSH11-89]
Detector: HA723398, Siglec 9 Rabbit mAb [PSH11-90]
Elisa assay was performed by coating wells of a 96-well plate with 50 µl per well of capture antibody (HA723397) diluted in carbonate/bicarbonate buffer, at a concentration of 2 µg/mL overnight at 4℃. Wells of the plate were washed, blocked with 150 µl 0.05% tween-20 1% BSA blocking buffer, and incubated with serial diluted Recombinant Human Siglec 9 protein (HA211074) starting from 4,000 pg/ml to 0 pg/ml and detect antibody (HA723398, Biotin, 0.2 µg/ml) for 1 hour at 30℃ with shaking. Then the plate was washed and incubated with 50 µl per well of SA-HRP for 0.5 hour at 30℃ with shaking. Detection was performed using an Ultra TMB Substrate for 10 minutes at room temperature in the dark. The reaction was stopped with sulfuric acid and absorbances were read on a spectrophotometer at 450 nm. -
![Interpolated concentrations of native Siglec-9 in U937 and Jurkat extract samples based on a 1,000 µg/ml extract load.<br />Capture: <a href="/products/HA723397" style="font-weight: bold;text-decoration: underline;">HA723397</a>, Siglec 9 Rabbit mAb [PSH11-89]<br />Detector: <a href="/products/HA723398" style="font-weight: bold;text-decoration: underline;">HA723398</a>, Siglec 9 Rabbit mAb [PSH11-90]<br /><br />The concentrations of Siglec-9 were measured in duplicates, interpolated from the Siglec-9 standard curve and corrected for sample dilution. Undiluted samples are U937 extract 100% and Jurkat extract 100%. The interpolated dilution factor corrected values are plotted (mean +/- SD, n=2). The mean Siglec-9 concentration was determined to be 159.3 pg/ml in U937 extract and undetectable in Jurkat extract.](https://storage.huabio.cn/huabio/productImg/HA723398_2.png?v=20260429161918)
Interpolated concentrations of native Siglec-9 in U937 and Jurkat extract samples based on a 1,000 µg/ml extract load.
Capture: HA723397, Siglec 9 Rabbit mAb [PSH11-89]
Detector: HA723398, Siglec 9 Rabbit mAb [PSH11-90]
The concentrations of Siglec-9 were measured in duplicates, interpolated from the Siglec-9 standard curve and corrected for sample dilution. Undiluted samples are U937 extract 100% and Jurkat extract 100%. The interpolated dilution factor corrected values are plotted (mean +/- SD, n=2). The mean Siglec-9 concentration was determined to be 159.3 pg/ml in U937 extract and undetectable in Jurkat extract. -
![Interpolated concentrations of spiked Siglec-9 in human cell culture media samples.<br />Capture: <a href="/products/HA723397" style="font-weight: bold;text-decoration: underline;">HA723397</a>, Siglec 9 Rabbit mAb [PSH11-89]<br />Detector: <a href="/products/HA723398" style="font-weight: bold;text-decoration: underline;">HA723398</a>, Siglec 9 Rabbit mAb [PSH11-90]<br /><br />The concentrations of Siglec-9 were measured in duplicates, interpolated from the Siglec-9 standard curves and corrected for sample dilution. Undiluted samples are as follows: cell culture media 50%. The interpolated dilution factor corrected values are plotted (mean +/- SD, n=2).](https://storage.huabio.cn/huabio/productImg/HA723398_3.png?v=20260429161918)
Interpolated concentrations of spiked Siglec-9 in human cell culture media samples.
Capture: HA723397, Siglec 9 Rabbit mAb [PSH11-89]
Detector: HA723398, Siglec 9 Rabbit mAb [PSH11-90]
The concentrations of Siglec-9 were measured in duplicates, interpolated from the Siglec-9 standard curves and corrected for sample dilution. Undiluted samples are as follows: cell culture media 50%. The interpolated dilution factor corrected values are plotted (mean +/- SD, n=2).
Please note: All products are "FOR RESEARCH USE ONLY AND ARE NOT INTENDED FOR DIAGNOSTIC OR THERAPEUTIC USE"