Human Vasodilator-stimulated phosphoprotein(VASP) ELISA kit

Code CSB-EL025797HU
Size 96T,5×96T,10×96T
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Product Details

Target Name
vasodilator-stimulated phosphoprotein
Alternative Names
Vasodilator stimulated phosphoprotein ELISA Kit; Vasodilator-stimulated phosphoprotein ELISA Kit; VASP ELISA Kit; VASP_HUMAN ELISA Kit
Abbreviation
VASP
Uniprot No.
Species
Homo sapiens (Human)
Sample Types
serum, plasma, tissue homogenates
Detection Range
62.5 pg/mL-4000 pg/mL
Sensitivity
15.6 pg/mL
Assay Time
1-5h
Sample Volume
50-100ul
Detection Wavelength
450 nm
Research Area
Signal Transduction
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 VASP in various matrices and diluted with the Sample Diluent to produce samples with values within the dynamic range of the assay.
 SampleSerum(n=4)
1:1Average %87
Range %92-96
1:2Average %92
Range %89-96
1:4Average %95
Range %90-99
1:8Average %94
Range %88-98
Recovery
The recovery of human VASP 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 TypeAverage % RecoveryRange
Serum (n=5) 9287-98
EDTA plasma (n=4)9490-98
Typical Data
These standard curves are provided for demonstration only. A standard curve should be generated for each set of samples assayed.
pg/mlOD1OD2AverageCorrected
40002.987 2.752 2.870 2.766
20002.362 2.404 2.383 2.279
10001.851 1.805 1.828 1.724
5001.427 1.433 1.430 1.326
2500.666 0.630 0.648 0.544
1250.441 0.466 0.454 0.350
62.50.248 0.265 0.257 0.153
00.102 0.105 0.104  
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 VASP ELISA Kit was designed for the quantitative measurement of Human VASP protein in serum, plasma, tissue homogenates. It is a Sandwich ELISA kit, its detection range is 62.5 pg/mL-4000 pg/mL and the sensitivity is 15.6 pg/mL.

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Target Background

Function
(From Uniprot)
Ena/VASP proteins are actin-associated proteins involved in a range of processes dependent on cytoskeleton remodeling and cell polarity such as axon guidance, lamellipodial and filopodial dynamics, platelet activation and cell migration. VASP promotes actin filament elongation. It protects the barbed end of growing actin filaments against capping and increases the rate of actin polymerization in the presence of capping protein. VASP stimulates actin filament elongation by promoting the transfer of profilin-bound actin monomers onto the barbed end of growing actin filaments. Plays a role in actin-based mobility of Listeria monocytogenes in host cells. Regulates actin dynamics in platelets and plays an important role in regulating platelet aggregation.
Gene References into Functions
  1. VASP role in the actin filament elongation PMID: 28667124
  2. Our results reveal a dual role of VASP in endothelial permeability. In addition to its well-documented function in barrier integrity, we show that S-nitrosylation of VASP contributes to the onset of endothelial permeability. PMID: 28526707
  3. findings have uncovered a PKG/VASP signaling pathway in Vascular Smooth Muscle Cells as a key molecular mechanism underlying T3-induced vascular relaxation. PMID: 28376489
  4. This study provides the first evidence of VASP manipulation by an intravacuolar bacterial pathogen PMID: 27711191
  5. VASP silencing downregulated Migfilin, beta-catenin and uPA and impaired spheroid invasion. PMID: 28209486
  6. VASP phosphorylation assay could be useful in studies aimed at investigating relations between clopidogrel active metabolite bioavailability and clinical events. PMID: 26576037
  7. VASP, zyxin and TES are tension-dependent members of focal adherens junctions independent of the alpha-catenin-vinculin module. PMID: 26611125
  8. Data show that the phosphorylation status of vasodilator-stimulated phosphoprotein (VASP) at serine S322 can be predictive for breast cancer progression to an aggressive phenotype. PMID: 26336132
  9. The authors propose that Lpd delivers Ena/VASP proteins to growing barbed ends and increases their actin polymerase activity by tethering them to actin filaments. PMID: 26295568
  10. Data show that tumor necrosis factor-alpha (TNF-alpha) increased A549 lung adenocarcinoma cell permeability by repressing vasodilator-stimulated phosphoprotein (VASP) expression through the activation of hypoxia inducible factor 1 alpha subunit (HIF-1alpha). PMID: 25051011
  11. The authors demonstrate that vasodilator-stimulated phosphoprotein (VASP), which is critical for regulation of actin assembly, cell adhesion and motility, is a direct substrate of Yersinia pestis YpkA kinase activity. PMID: 25298072
  12. Ena/VASP's ability to bind F-actin and profilin-complexed G-actin are important for its effect, whereas Ena/VASP tetramerization is not necessary. PMID: 25355952
  13. In clinical practice,LCR and CYP2C19 gene polymorphism should be assessed in NCIS patients receiving clopidogrel treatment. PMID: 25457586
  14. VASP phosphorylation at Ser(157) mediates its localization at the membrane, but that VASP Ser(157) phosphorylation and membrane localization are not sufficient to activate its actin catalytic activity PMID: 25759389
  15. PKA regulates VASP phosphorylation in Ras-transformed cells in a non-cell-autonomous manner. PMID: 24963131
  16. Serine phosphorylation of vasodilator-stimulated phosphoprotein (VASP) regulates colon cancer cell survival and apoptosis. PMID: 25543053
  17. VASP reconstitution of actin-based motility depends on the recruitment of F-actin seeds from the solution produced by cofilin PMID: 25246528
  18. low serum concentration of vaspin is a risk factor for the progression of T2DM PMID: 24732788
  19. palladin functions as a dynamic scaffolding protein that promotes the assembly of dorsal stress fibers by recruiting VASP to these structures. PMID: 24496446
  20. Overexpression of VASP in endothelial cells blocked inflammation and insulin resistance induced by palmitate. PMID: 25117404
  21. Results show that NPs, possibly through the clearance receptor (natriuretic peptide receptor-C) expressed on platelet membranes, increase VASP phosphorylation but only following PDE inhibition, indicating a small, localised cGMP synthesis. PMID: 23469931
  22. Binding of tetrameric VASP to interleukin-1 receptor-associated kinase (IRAK)1 is regulated by assembly of IRAK1 onto signaling complexes. PMID: 24857403
  23. Matrine modulates the structure, subcellular distribution, expression and phosphorylation of VASP in human gastric cancer cells, thus inhibiting cancer cell adhesion and migration. PMID: 23685951
  24. PKD1 directly phosphorylates VASP at two serine residues, Ser-157 and Ser-322. These phosphorylations occur in response to RhoA activation and mediate VASP re-localization from focal contacts to the leading edge region. PMID: 23846685
  25. Letter: In High on-treatment platelet reactivity assessed by various platelet function tests the consensus-defined cut-off of VASP-P platelet reactivity index too low. PMID: 22212857
  26. Active proteases in nephrotic plasma lead to a podocin-dependent phosphorylation of VASP in podocytes via protease activated receptor-1. PMID: 23436459
  27. VASP participates in the regulation of cell cytoskeleton reorganization and morphology modification induced by shear flow via a cAMP/cAK pathway. PMID: 21158099
  28. a novel TNF-alpha/HIF-1alpha/VASP axis in which HIF-1alpha acts downstream of TNF-alpha to inhibit VASP expression and modulate the adhesion and proliferation of breast cancer cells PMID: 22320863
  29. Membrane organelle disassembly reflected specific phosphorylation of VASP Ser239, the cGMP/PKG preferred site, and rapid VASP removal from tumor cell protrusions PMID: 21702043
  30. Prolonged treatment with albuterol prevents the agonist-induced phosphorylation of VASP at Ser157. PMID: 22210825
  31. The phosphorylation and dephosphorylation cycle of VASP by the Abi-1-bridged mechanism regulates association of VASP with focal adhesions, which may regulate adhesion of Bcr-Abl-transformed leukaemic cells. PMID: 22014333
  32. The Ser-239 phosphorylation level of VASP might be a useful protein marker for riboflavin and UV light-mediated PLT compromise. PMID: 21827504
  33. ENA/VASP-family proteins are functionally redundant in homologous recombination, and MENA, VASP and EVL may be involved in the DSB repair pathway in humans PMID: 21398369
  34. VASP protein regulates osteosarcoma cell migration and metastasis PMID: 21874265
  35. Studied generation of filopodia with regards to the dynamic interaction established by Eps8, IRSp53 and VASP with actin filaments. PMID: 21814501
  36. Data show that VASP and Mena interact with RSK1. PMID: 21423205
  37. Data show that VASP has different immunostaining patterns between cerebral cortical plates in prenatal and adult human brain samples, and suggest that VASP may play a crucial role in the regulation of human neonatal cerebral cortical development. PMID: 21163344
  38. VASP deficiency leads to a more profound endothelial barrier disruption and delayed recovery after activation of thrombin PAR-1 receptor. PMID: 20945373
  39. vasodilator-stimulated phosphoprotein is phosphorylated in patients with genetic defects of the platelet P2Y(12) receptor for ADP PMID: 20695985
  40. High VASP expression is associated with focal adhesion assembly in myofibroblasts fostering a microenvironment that promotes tumor growth. PMID: 20802179
  41. Results describe the impact of smoking on platelet reactivity and phosphorylation of vasodilator-stimulated phosphoprotein (VASP) in a group of 20 young smokers. PMID: 20822337
  42. Results suggest that actin polymerization and bundling by VASP are critical for spine formation, expansion, and modulating synaptic strength. PMID: 20826790
  43. peroxynitrite may inhibit platelet function by inducing the phosphorylation of VASP through a mechanism that requires the activation of PKC. PMID: 20624010
  44. presentation of a model for how VASP promotes actin filament assembly PMID: 21041447
  45. Letter: Report vasodilator-stimulated phosphoprotein (VASP) ELISA to evaluate P2Y12-ADP receptor activity in coronary artery disease patients taking antiplatelet agents. PMID: 20589315
  46. Platelet hyperreactivity in multiple electrode aggregometry might be a better risk predictor for stent thrombosis than the assessment of the specific clopidogrel effect with the VASP phosphorylation assay. PMID: 19943879
  47. Combination of experimental and computational interactome research was used for the analysis of protein-protein interactions between Abi-1 and VASP in human platelets. PMID: 20110575
  48. Compared clopidogrel effectiveness in unstable ST-elevation myocardial infarction (STEMI) patients on mechanical ventilation with stable STEMI patients using the VASP index. PMID: 19902490
  49. IRAK-1 forms a close complex with PKCepsilon as well as VASP, and participates in phorbol 12-myristate 13-acetate-induced phosphorylation of VASP. PMID: 20044140
  50. VASP phosphorylation controls remodeling of the actin cytoskeleton. PMID: 19825941

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Subcellular Location
Cytoplasm. Cytoplasm, cytoskeleton. Cell junction, focal adhesion. Cell junction, tight junction. Cell projection, lamellipodium membrane. Cell projection, filopodium membrane. Note=Targeted to stress fibers and focal adhesions through interaction with a number of proteins including MRL family members. Localizes to the plasma membrane in protruding lamellipodia and filopodial tips. Stimulation by thrombin or PMA, also translocates VASP to focal adhesions. Localized along the sides of actin filaments throughout the peripheral cytoplasm under basal conditions. In pre-apoptotic cells, colocalizes with MEFV in large specks (pyroptosomes).
Protein Families
Ena/VASP family
Tissue Specificity
Highly expressed in platelets.
Database Links

HGNC: 12652

OMIM: 601703

KEGG: hsa:7408

STRING: 9606.ENSP00000245932

UniGene: Hs.515469

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