Human V-set and immunoglobulin domain-containing protein 4(VSIG4) ELISA kit

Code CSB-EL025928HU
Size 96T,5×96T,10×96T
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Product Details

Target Name
V-set and immunoglobulin domain containing 4
Alternative Names
Complement receptor of the immunoglobulin superfamily ELISA Kit; CRIg ELISA Kit; Ig superfamily protein ELISA Kit; Protein Z39Ig ELISA Kit; UNQ317/PRO362 ELISA Kit; V set and immunoglobulin domain containing 4 ELISA Kit; V-set and immunoglobulin domain-containing protein 4 ELISA Kit; VSIG4 ELISA Kit; VSIG4_HUMAN ELISA Kit; Z39IG ELISA Kit
Abbreviation
VSIG4
Uniprot No.
Species
Homo sapiens (Human)
Sample Types
serum, plasma, tissue homogenates, cell lysates
Detection Range
31.25 pg/mL-2000 pg/mL
Sensitivity
7.81 pg/mL
Assay Time
1-5h
Sample Volume
50-100ul
Detection Wavelength
450 nm
Research Area
Immunology
Assay Principle
quantitative
Measurement
Sandwich
Precision
Intra-assay Precision (Precision within an assay): CV%<8%      
Three samples of known concentration were tested twenty times on one plate to assess.  
Inter-assay Precision (Precision between assays): CV%<10%      
Three samples of known concentration were tested in twenty assays to assess.    
             
Linearity
To assess the linearity of the assay, samples were spiked with high concentrations of human VSIG4 in various matrices and diluted with the Sample Diluent to produce samples with values within the dynamic range of the assay.
  Sample Serum(n=4)  
1:1 Average % 89  
Range % 80-94  
1:2 Average % 98  
Range % 91-104  
1:4 Average % 97  
Range % 94-105  
1:8 Average % 96  
Range % 86-100  
Recovery
The recovery of human VSIG4 spiked to levels throughout the range of the assay in various matrices was evaluated. Samples were diluted prior to assay as directed in the Sample Preparation section.
Sample Type Average % Recovery Range  
Serum (n=5) 95 89-97  
EDTA plasma (n=4) 90 86-94  
             
             
Typical Data
These standard curves are provided for demonstration only. A standard curve should be generated for each set of samples assayed.
pg/ml OD1 OD2 Average Corrected  
2000 2.298 2.154 2.226 2.035  
1000 1.557 1.501 1.529 1.338  
500 1.025 1.080 1.053 0.862  
250 0.700 0.675 0.688 0.497  
125 0.510 0.490 0.500 0.309  
62.5 0.355 0.349 0.352 0.161  
31.25 0.236 0.233 0.235 0.044  
0 0.192 0.189 0.191    
Troubleshooting
and FAQs
Storage
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
Description

This Human VSIG4 ELISA Kit was designed for the quantitative measurement of Human VSIG4 protein in serum, plasma, tissue homogenates, cell lysates. It is a Sandwich ELISA kit, its detection range is 31.25 pg/mL-2000 pg/mL and the sensitivity is 7.81 pg/mL.

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Target Background

Function
(From Uniprot)
Phagocytic receptor, strong negative regulator of T-cell proliferation and IL2 production. Potent inhibitor of the alternative complement pathway convertases.
Gene References into Functions
  1. Soluble VSIG4 levels are associated with the progression and recurrence of ovarian cancer, indicating that soluble VSIG4 may be used as a potential biomarker for predicting tumor prognosis. PMID: 28498255
  2. VSIG4 signaling provides an anti-immune evasion mechanism that prevents the outgrowth of intracellular bacteria in macrophages PMID: 27440002
  3. The VSIG4 upregulation by LMP1 was regulated at the transcriptional level via the NF-kB signaling axis. PMID: 28859984
  4. VSIG4 expression is significantly upregulated in human masticatory mucosa during wound healing PMID: 28005267
  5. we concluded that let-7g-5p inhibits epithelial-mesenchymal transition (EMT) consistent with reduction of glioma stem cell (GSC) phenotypes by targeting VSIG4 in glioblastoma. PMID: 27634309
  6. Data indicate that rotein kinase calpha (PKCalpha) plays a role in downregulating complement receptor Ig (CRIg coded by V-set and Ig domain-containing protein 4 VSIG4) expression. PMID: 25687755
  7. complement receptor of the immunoglobulin superfamily-L-factor H protects glomerular mesangial cells from complement-mediated injury and proliferative lesions PMID: 25114177
  8. we identified VSIG4 as a potential diagnostic marker of severe preeclampsia. The determination of this gene may improve the prognostic assessment of severe preeclampsia. PMID: 24349325
  9. Data indicate that massive V-set and Ig domain-containing 4 VSIG4(+) cell infiltration throughout the non-small-cell lung cancer samples. PMID: 24862966
  10. we showed that a complement receptor of the Ig superfamily (CRIg, also known as Z39Ig), a receptor for complement fragments (C3b and iC3b), was expressed on a subset of intestinal macrophages in murine and human large intestine PMID: 21768202
  11. These results suggest that T cells can opposite T cell hyporesponsiveness through dampening Z39Ig inhibitory signals from macrophages and thus maintain their anti-viral function in chronic hepatitis B. PMID: 20399148
  12. hVSIG4 recombinant adenovirus-transfected DCs suppress T cell proliferation, cytokine production and activation marker expression with PMID: 19914289
  13. Results report the identification and characterization of a Complement Receptor of the Immunoglobulin superfamily, CRIg, that binds complement fragments C3b and iC3b. PMID: 16530040
  14. These data indicate that the macrophage Z39Ig is involved in the pathogenesis of inflammatory diseases through chemokine induction, which will promote the migration of inflammatory cells into the lesion area, and MMP-9 induction. PMID: 16882875
  15. The specific expression of VSIG4 on resting macrophages suggests that VSIG4 may be important for the maintenance of T cell unresponsiveness in healthy tissues. PMID: 17016562
  16. CRIg is not only a phagocytic receptor, but also a potent inhibitor of the alternative pathway convertases PMID: 17051150

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Subcellular Location
Membrane; Single-pass type I membrane protein.
Tissue Specificity
Abundantly expressed in several fetal tissues. In adult tissues, highest expression in lung and placenta. Expressed in resting macrophages.
Database Links

HGNC: 17032

OMIM: 300353

KEGG: hsa:11326

STRING: 9606.ENSP00000363869

UniGene: Hs.8904

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