Mouse Collagen alpha-1(XVIII) chain (COL18A1/ES) ELISA kit

Code CSB-E07974m
Size 96T,5×96T,10×96T
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Product Details

Target Name
collagen, type XVIII, alpha 1
Alternative Names
Col18a1Collagen alpha-1(XVIII) chain [Cleaved into: Endostatin; Non-collagenous domain 1 ELISA Kit; NC1)] ELISA Kit
Abbreviation
COL18A1/ES
Uniprot No.
Species
Mus musculus (Mouse)
Sample Types
serum, plasma, cell culture supernates, tissue homogenates
Detection Range
0.156 ng/mL-10 ng/mL
Sensitivity
0.039 ng/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 mouse COL18A1/ES 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 % 92  
Range % 89-95  
1:2 Average % 103  
Range % 99-105  
1:4 Average % 92  
Range % 87-96  
1:8 Average % 99  
Range % 94-101  
Recovery
The recovery of mouse COL18A1/ES 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 91-98  
EDTA plasma (n=4) 95 91-98  
             
             
Typical Data
These standard curves are provided for demonstration only. A standard curve should be generated for each set of samples assayed.
             
             
             
             
             
             
             
             
             
             
             
             
             
ng/ml OD1 OD2 Average Corrected  
10 2.234 2.213 2.224 2.067  
5 1.732 1.694 1.713 1.556  
2.5 1.091 1.076 1.084 0.927  
1.25 0.551 0.537 0.544 0.387  
0.625 0.366 0.386 0.376 0.219  
0.312 0.292 0.281 0.287 0.130  
0.156 0.248 0.228 0.238 0.081  
0 0.159 0.155 0.157    
             
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 Mouse COL18A1/ES ELISA Kit was designed for the quantitative measurement of Mouse COL18A1/ES protein in serum, plasma, cell culture supernates, tissue homogenates. It is a Sandwich ELISA kit, its detection range is 0.156 ng/mL-10 ng/mL and the sensitivity is 0.039 ng/mL .

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Target Background

Function
(From Uniprot)
Probably plays a major role in determining the retinal structure as well as in the closure of the neural tube.; May regulate extracellular matrix-dependent motility and morphogenesis of endothelial and non-endothelial cells; the function requires homotrimerization and implicates MAPK signaling.; Potently inhibits endothelial cell proliferation and angiogenesis. May inhibit angiogenesis by binding to the heparan sulfate proteoglycans involved in growth factor signaling. Inhibits VEGFA isoform VEGF165-induced endothelial cell proliferation and migration. Seems to inhibit VEGFA-mediated signaling by blocking the interaction of VEGFA to its receptor KDR/VEGFR2. Modulates endothelial cell migration in an integrin-dependent manner implicating integrin ITGA5:ITGB1 and to a lesser extent ITGAV:ITGB3 and ITGAV:ITGB5. May negatively regulate the activity of homotrimeric non-collagenous domain 1.
Gene References into Functions
  1. This study examined the staining levels of proteasomal and autophagy markers in the RPE of different ages of the Col18a1 (-/-) mice. Eyes from 3, 6-7, 10-13 and 18 months old mice were enucleated and embedded in paraffin according to the routine protocol. PMID: 27125427
  2. Kidney fibrosis in aging may represent a natural outcome of upregulated endostatin (EST) and transglutaminase 2 (TG2), but more likely it appears to be a result of cumulative stresses occurring on the background of synergistically acting geronic (aging) proteins, EST and TG2. PMID: 27165830
  3. Specific collagen XVIII isoforms promote adipose tissue accrual via mechanisms determining PMID: 25024173
  4. There are correlations between the elevation of endostatin levels and parallel microvascular rarefaction and induction of renal fibrosis in aging mice. PMID: 24727495
  5. An excess of the collagen XVIII Tsp-1 domain is deleterious in the eye, possibly by impairing certain functions of the full-length molecule. PMID: 24135756
  6. The results of the present study indicate endostatin promotes soft callus formation but inhibits callus remodeling during fracture healing most probably by an inhibition of angiogenesis. PMID: 23720153
  7. Type XVIII collagen is an important functional component of the liver matrix microenvironment and is crucial for hepatocyte survival during injury and stress. PMID: 23580202
  8. Data indicate that delivery by attenuated Salmonella of the combination therapeutic plasmid simultaneously knocked down the expression of Stat3 and resulted in over-expression of Endostatin, which synergistically inhibited prostate cancer growth. PMID: 23463096
  9. Endostatin lowers blood pressure via nitric oxide and prevents hypertension associated with VEGF inhibition PMID: 22733742
  10. Women with early-onset, but not late-onset preeclampsia have higher levels of endostatin than healthy pregnant women in corresponding lengths of gestation. PMID: 19564642
  11. Lack of collagen XVIII long isoforms affects kidney podocytes, whereas the short form is needed in the proximal tubular basement membrane PMID: 21193414
  12. Data show that Col18-deficiency causes hypertriglyceridemia in mice. PMID: 21085708
  13. In vivo, Collagen XVIII/endostatin does not play an indispensable role in skeletal development PMID: 19763371
  14. the local synthesis of a 28-kDa ES-related fragment following acute kidney injury and suggest its role in endothelium survival PMID: 20110665
  15. Lack of collagen XVIII/endostatin results in eye abnormalities. PMID: 11927538
  16. Endostatin gene transfer inhibits joint angiogenesis and pannus formation in inflammatory arthritis PMID: 11991745
  17. Endostatin expression effectively inhibits mammary neoplasms growth in nude mice PMID: 12673115
  18. Col18a1 knockout mice have iris and ciliary body defects. PMID: 14525950
  19. Col18a1 is essential for vision and retinal pigment epithelial function. PMID: 14685281
  20. there is a putative integrin-binding sequence with anti-migratory activity within endostatin PMID: 14973128
  21. Collagen XVIII and enamelysin were co-localized in the developing enamel matrix and stratum intermedium and in the enamel-like tumor matrix of odontogenic tumors. PMID: 15296943
  22. Studies in knockout mice identify a previously unrecognized function for collagen XVIII in vascular permeability. Loss of collagen XVIII enhances angiogenesis & vascular permeability in atherosclerosis by distinct gene-dose-dependent mechanisms. PMID: 15313955
  23. collagen XVIII's C-terminal endostatin domain harbors a prominent tissue-binding site, which can bind in the absence of heparan sulfates in situ PMID: 15614762
  24. In knockout mice, a widening of the epidermal basement membrane (BM) zone of the skin was observed in electron microscopy. PMID: 15632014
  25. angiostatic function is heparan sulfate-dependent, and in situ-binding of endostatin to endothelial cells is increased by heparan sulfates PMID: 15694132
  26. The p.D104N allele was found in trans with a pathogenic frameshift mutation in a healthy carrier of Knobloch syndrome, showing it is not very harmful. It may be a modifier or at-risk allele. PMID: 15714516
  27. Collagen XVIII is localized in various basement membranes and is highly expressed throughout the connective tissue core of the endocardial cushions and embryonic atrioventricular valve leaflets; it may have a role in cardiac valve morphogenesis. PMID: 16170784
  28. Exposure to hypoxia resulted in organ-specific, long-term increase of 24 & 26 kDa endostatin fragments in mouse aorta & lung. PMID: 16465514
  29. Proteolytic matrix fragment endostatin(ES) is prominent vasorelaxing agent. Because ES is constantly released into the blood, it is novel regulator of blood pressure and represents an interesting pharmacological target. PMID: 16574906
  30. Data show that upon experimental and human renal ischemia/reperfusion, microvascular basement membrane (BM) heparan sulfate proteoglycans (collagen 18alpha1, agrin and perlecan) are modified to bind L-selectin and monocyte chemoattractant protein-1. PMID: 17525255
  31. following resection of cirrhotic liver, regeneration capacity is depressed and high endostatin levels are independent of hepatic regeneration PMID: 17574579
  32. Results show that endogenous endostatin and its related peptides are widely distributed in all in vivo tumor types tested, but not in most of the cultured tumor cell lines. PMID: 17727259
  33. Local synthesis of a 30 kDa endostatin-related fragment following acute renal failure. Role in the modulation of renal capillary density. PMID: 17803469
  34. Endostatin binding to ovarian cancer cells inhibits peritoneal attachment and dissemination PMID: 18006826
  35. D104N polymorphism of the COL18A gene may be an important inherited determinant of the LC susceptibility. PMID: 18054814
  36. Inhibition of tumor angiogenesis by endostatin at an early stage in skin tumor development and an inhibition of lymph node metastasis. PMID: 18089781
  37. study shows that a lack of collagen XVIII accelerates wound vascularisation and the rate of cutaneous wound healing whereas an excess of endostatin leads to delayed wound healing PMID: 18455382
  38. These data indicate that collagen XVIII may play an important role in corneal reinnervation after wounding. PMID: 18840438
  39. Report effects of endostatin production on oncogenicity and metastatic activity of HPV16-transformed mouse cells: role of interleukin 1alpha. PMID: 19513570

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Subcellular Location
Secreted, extracellular space, extracellular matrix. Secreted, extracellular space, extracellular matrix, basement membrane.; [Non-collagenous domain 1]: Secreted, extracellular space, extracellular matrix, basement membrane. Secreted.; [Endostatin]: Secreted. Secreted, extracellular space, extracellular matrix, basement membrane.
Protein Families
Multiplexin collagen family
Tissue Specificity
Expressed in liver, kidney, lung, skeletal muscle and testis.
Database Links
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