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|Antigen||TEK Tyrosine Kinase, Endothelial (TEK) ELISA Kits|
Kits with alternative reactivity to:
|Method Type||Sandwich ELISA|
|Detection Range||156-10000 pg/mL|
|Minimum Detection Limit||156 pg/mL|
|6 references available|
|Supplier||Log in to see|
Product Details TEK ELISA KitTarget details Application Details Handling References for TEK Kit (ABIN411357) Images
|Purpose||Sandwich High Sensitivity ELISA kit for Quantitative Detection of Human TIE2|
|Sample Type||Cell Culture Supernatant, Serum, Plasma (heparin), Plasma (EDTA)|
Expression system for standard: NSO
Immunogen sequence: A23-K745
|Cross-Reactivity (Details)||There is cross-reactivity with human TIE1< 0.1 % .|
|Material not included||Microplate reader in standard size. Automated plate washer. Adjustable pipettes and pipette tips. Multichannel pipettes are recommended in the condition of large amount of samples in the detection. Clean tubes and Eppendorf tubes. Washing buffer (neutral PBS or TBS). Preparation of 0.01M TBS: Add 1.2g Tris, 8.5g Nacl|
Expression system for standard: NSO
Immunogen sequence: A23-K745
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|Alternative Name||TEK (TEK ELISA Kit Abstract)|
Protein Function: Tyrosine-protein kinase that acts as cell-surface receptor for ANGPT1, ANGPT2 and ANGPT4 and regulates angiogenesis, endothelial cell survival, proliferation, migration, adhesion and cell spreading, reorganization of the actin cytoskeleton, but also maintenance of vascular quiescence. Has anti-inflammatory effects by preventing the leakage of proinflammatory plasma proteins and leukocytes from blood vessels. Required for normal angiogenesis and heart development during embryogenesis. Required for post- natal hematopoiesis. After birth, activates or inhibits angiogenesis, depending on the context. Inhibits angiogenesis and promotes vascular stability in quiescent vessels, where endothelial cells have tight contacts. In quiescent vessels, ANGPT1 oligomers recruit TEK to cell-cell contacts, forming complexes with TEK molecules from adjoining cells, and this leads to preferential activation of phosphatidylinositol 3-kinase and the AKT1 signaling cascades. In migrating endothelial cells that lack cell-cell adhesions, ANGT1 recruits TEK to contacts with the extracellular matrix, leading to the formation of focal adhesion complexes, activation of PTK2/FAK and of the downstream kinases MAPK1/ERK2 and MAPK3/ERK1, and ultimately to the stimulation of sprouting angiogenesis. ANGPT1 signaling triggers receptor dimerization and autophosphorylation at specific tyrosine residues that then serve as binding sites for scaffold proteins and effectors. Signaling is modulated by ANGPT2 that has lower affinity for TEK, can promote TEK autophosphorylation in the absence of ANGPT1, but inhibits ANGPT1-mediated signaling by competing for the same binding site. Signaling is also modulated by formation of heterodimers with TIE1, and by proteolytic processing that gives rise to a soluble TEK extracellular domain. The soluble extracellular domain modulates signaling by functioning as decoy receptor for angiopoietins. TEK phosphorylates DOK2, GRB7, GRB14, PIK3R1, SHC1 and TIE1. .
Background: Tyrosine kinase with Ig and EGF homology domain 2(Tie-2), also called TEK tyrosine kinase, endothelial(TEK). Tie-2 and tie-1 are expressed in early embryonic vascular system and in maternal decidual vascular endothelial cells, where the vasculature undergoes an active angiogenesis. Tie-2, but not tie-1, expression was also detected in extraembryonic mesoderm of the amnion. Angiogenesis is coordinated with follicular cell growth in goitrogenesis. The angiopoietins, Ang-1 and Ang-2, are angiogenic growth factors acting through Tie-2. Tie-2 and Ang-1 are expressed in thyroid epithelial and endothelial cells, and Tie-2 is regulated by TSH and cAMP in follicular cells. And Tie-2 expression is increased in goiter in both humans and rats, consistent with a role in goitrogenesis. Tie2/Ang-1 signaling pathway plays a critical role in the maintenance of HSCs in a quiescent state in the BM niche. And the Tie-2 signaling pathway is also critical for endothelial cell-smooth muscle cell communication in venous morphogenesis.
Synonyms: Angiopoietin-1 receptor,184.108.40.206,Endothelial tyrosine kinase,Tunica interna endothelial cell kinase,Tyrosine kinase with Ig and EGF homology domains-2,Tyrosine-protein kinase receptor TEK,Tyrosine-protein kinase receptor TIE-2,hTIE2,p140 TEK,CD202b,TEK,TIE2, VMCM, VMCM1,
Full Gene Name: Angiopoietin-1 receptorCellular Localisation: Cell membrane, Single-pass type I membrane protein. Cell junction. Cell junction, focal adhesion. Cytoplasm, cytoskeleton. Secreted. Recruited to cell-cell contacts in quiescent endothelial cells. Colocalizes with the actin cytoskeleton and at actin stress fibers during cell spreading. Recruited to the lower surface of migrating cells, especially the rear end of the cell. Proteolytic processing gives rise to a soluble extracellular domain that is secreted.
|Pathways||RTK Signaling, Growth Factor Binding|
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|Application Notes||Before using Kit, spin tubes and bring down all components to bottom of tube. Duplicate well assay was recommended for both standard and sample testing.|
Sequence similarities: Belongs to the protein kinase superfamily. Tyr protein kinase family. Tie subfamily.
Tissue Specificity: Detected in umbilical vein endothelial cells. Proteolytic processing gives rise to a soluble extracellular domain that is detected in blood plasma (at protein level). Predominantly expressed in endothelial cells and their progenitors, the angioblasts. Has been directly found in placenta and lung, with a lower level in umbilical vein endothelial cells, brain and kidney. .
|Protocol||human TIE2 ELISA Kit was based on standard sandwich enzyme-linked immune-sorbent assay technology. A monoclonal antibody from mouse specific for TIE2 has been precoated onto 96-well plates. Standards(NSO, A23-K745) and test samples are added to the wells, a biotinylated detection polyclonal antibody from goat specific for TIE2 is added subsequently and then followed by washing with PBS or TBS buffer. Avidin-Biotin-Peroxidase Complex was added and unbound conjugates were washed away with PBS or TBS buffer. HRP substrate TMB was used to visualize HRP enzymatic reaction. TMB was catalyzed by HRP to produce a blue color product that changed into yellow after adding acidic stop solution. The density of yellow is proportional to the human TIE2 amount of sample captured in plate.|
|Assay Procedure||Aliquot 0.1 mL per well of the 10000pg/mL, 5000pg/mL, 2500pg/mL, 1250pg/mL, 625pg/mL, 312pg/mL, 156pg/mL human TIE2 standard solutions into the precoated 96-well plate. Add 0.1 mL of the sample diluent buffer into the control well (Zero well). Add 0.1 mL of each properly diluted sample of human cell culture supernates, serum or plasma(heparin, EDTA) to each empty well. See "Sample Dilution Guideline" above for details. It is recommended that each human TIE2 standard solution and each sample be measured in duplicate.|
|Restrictions||For Research Use only|
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|Handling Advice||Avoid multiple freeze-thaw cycles.|
|Storage||-20 °C,4 °C|
|Storage Comment||Store at 4°C for 6 months, at -20°C for 12 months. Avoid multiple freeze-thaw cycles|
|Expiry Date||12 months|
References for TEK Kit (ABIN411357)Product Details TEK ELISA Kit Target details Application Details Handling Images back to top
|Product cited in:||
Sancakdar, Guven, Uysal, Deveci, Gültürk: "Important of Angiopoietic System in Evaluation of Endothelial Damage in Children with Crimean-Congo Hemorrhagic Fever." in: The Pediatric infectious disease journal, Vol. 34, Issue 8, pp. e200-5, 2015
Zheng, Zhu, Bai, Wu, Jia, Hu: "Exercise improves recovery after ischemic brain injury by inducing the expression of angiopoietin-1 and Tie-2 in rats." in: The Tohoku journal of experimental medicine, Vol. 224, Issue 3, pp. 221-8, 2011
Arai, Hirao, Ohmura, Sato, Matsuoka, Takubo, Ito, Koh, Suda: "Tie2/angiopoietin-1 signaling regulates hematopoietic stem cell quiescence in the bone marrow niche." in: Cell, Vol. 118, Issue 2, pp. 149-61, 2004
Ramsden, Cocks, Shams, Nijjar, Watkinson, Sheppard, Ahmed, Eggo: "Tie-2 is expressed on thyroid follicular cells, is increased in goiter, and is regulated by thyrotropin through cyclic adenosine 3',5'-monophosphate." in: The Journal of clinical endocrinology and metabolism, Vol. 86, Issue 6, pp. 2709-16, 2001
Vikkula, Boon, Carraway, Calvert, Diamonti, Goumnerov, Pasyk, Marchuk, Warman, Cantley, Mulliken, Olsen: "Vascular dysmorphogenesis caused by an activating mutation in the receptor tyrosine kinase TIE2." in: Cell, Vol. 87, Issue 7, pp. 1181-90, 1997
Sato, Qin, Kozak, Audus: "Tie-1 and tie-2 define another class of putative receptor tyrosine kinase genes expressed in early embryonic vascular system." in: Proceedings of the National Academy of Sciences of the United States of America, Vol. 90, Issue 20, pp. 9355-8, 1993
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