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Manufactured by BioVendor

PEDF Human ELISA

  • Regulatory status:RUO
  • Type:Sandwich ELISA, Biotin-labelled antibody
  • Other names:Pigment Epithelium-Derived Factor, Serpin F1, EPC-1, Cell proliferation-inducing gene 35 protein, PIG35
  • Species:Human
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Cat. No. Size Price


RD191114200R 96 wells (1 kit)
PubMed Product Details
Technical Data

Type

Sandwich ELISA, Biotin-labelled antibody

Applications

Serum, Plasma-Citrate

Sample Requirements

10 µl/well

Shipping

At ambient temperature. Upon receipt, store the product at the temperature recommended below.

Storage/Expiration

Store the complete kit at 2–8°C. Under these conditions, the kit is stable until the expiration date (see label on the box).

Calibration Curve

Calibration Range

0.15–6 ng/ml

Limit of Detection

0.045 ng/ml

Intra-assay (Within-Run)

n = 8; CV = 3.6%

Inter-assay (Run-to-Run)

n = 5; CV = 5.9%

Spiking Recovery

100,70%

Dilutation Linearity

97,80%

Crossreactivity

  • bovine Non-detectable
  • cat Yes (recommended dilution 1:4000)
  • dog Non-detectable
  • goat Non-detectable
  • hamster Non-detectable
  • horse Non-detectable
  • mouse Non-detectable
  • pig Non-detectable
  • rabbit Non-detectable
  • rat Non-detectable
  • sheep Non-detectable
  • chicken Not tested
  • human Yes
  • monkey Yes (recommended dilution 1:4000)
Summary

Features

  • It is intended for research use only
  • The total assay time is less than 4 hours
  • The kit measures PEDF in serum and citrate plasma
  • Assay format is 96 wells
  • Quality Controls are human serum based
  • Standard is recombinant protein based
  • Components of the kit are provided ready to use, concentrated or lyophilized

Research topic

Energy metabolism and body weight regulation, Others

Summary

PEDF is syntetized and released by human fetal retinal pigment epithelial cells (RPE) into the interphotoreceptor matrix and is localized to human chromosome 17p. It is a 50 kDa multifunctional glycoprotein belonging to the serpin protease inhibitor supergene (serpin) family, acting like substrates rather than inhibitors of serine proteases, being also described as serine peptidase inhibitor, clade F (alfa-2 antiplasmin, pigment epithelium derived factor), member 1. This gene encodes a 418 amino-acid protein with an asparagine glycosylation site at position 285–287 (Asn-Leu-Thr) and N-terminal signal peptide associated with secreted proteins. PEDF has an asymmetrical charge distribution, with a high density of basic residues concentrated on one side (positive) of the molecule and of acidic residues on the opposite side. Interactions of PEDF with three different types of molecules have been discovered: glycosaminoglycans of extracellular matrixes, collagens and receptors on the surface of neuronal cells. Negatively charged, acidic PEDF binds to collagen, lacks neurotrophic activity, and may confer antiangiogenic properties. PEDF has gliastatic, neuronotrophic, neuroprotective and antitumorigenic properties. PEDF acts in neuronal differentiation and survival in cells derived from retina and the central nervous system (CNS).Two functional epitopes have been identified on PEDF, a 34-mer peptide (residues 24–57) and a 44-mer peptide (residues 58–101). 44-mer peptide interacts with a a putative 80 kDa receptor (PEDFRN), identified on Y-79 cells (retinoblastoma cells), cerebellar and motor neurons, and in neural retina and replicates the neurotrophic function and the ability to block vascular leackage. The 34-mer peptide, possibly via a distinct receptor (PEDF-RA) identified on endothelial cells, induces apoptosis, blocks endothelial cell migration and corneal angiogenesis, but fails to induce Y-79 differentiation. Recently, PEDF was shown also to have potent anti-angiogenic activity as it specifically inhibited the migration of endothelial cells, an essential step in angiogenesis. Its activity equals or supersedes that of other anti-angiogenic factors, including angiostatin, endostatin and thrombospondin-1. In cell culture and in animal models, PEDF inhibited endothelial cell (EC) growth and migration and suppressed ischemia-induced neovascularization, whereas in porcine liver, the expression of PEDF has been associated with body muscularity and obesity. Analyses revealed that Human PEDF is correlated with BMI, CRP, diastolic blood pressure, insulin, Quicki. Individuals with metabolic syndrome (NCEP criterion) have significantly higher PEDF values than healthy subjects , suggesting that PEDF is and independent marker of MS with sufficient diagnostic efficacy.

Product References (19)

References

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  • Tschoner A, Sturm W, Ress C, Engl J, Kaser S, Laimer M, Laimer E, Klaus A,Tilg H, Patsch JR, Ebenbichler CF. Effect of weight loss on serum pigmentepithelium-derived factor levels. Eur J Clin Invest. 2011 Sep;41(9):937-42. doi: 10.1111/j.1365-2362.2011.02482.x. Epub 2011 Feb 14. PubMed PMID: 21314826. See more on PubMed
  • Yilmaz Y, Eren F, Ayyildiz T, Colak Y, Kurt R, Senates E, Tuncer I, Dolar E,Imeryuz N. Serum pigment epithelium-derived factor levels are increased inpatients with biopsy-proven nonalcoholic fatty liver disease and independentlyassociated with liver steatosis. Clin Chim Acta. 2011 Nov 20;412(23-24):2296-9.doi: 10.1016/j.cca.2011.08.025. Epub 2011 Aug 24. PubMed PMID: 21888902. See more on PubMed
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Summary References (18)

References to Pigment Epithelium-Derived Factor

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  • Alberdi EM, Weldon JE, Becerra SP. Glycosaminoglycans in human retinoblastoma cells: heparan sulfate, a modulator of the pigment epithelium-derived factor-receptor interactions. BMC Biochem. 2003 Feb 19;4:1
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  • Aymerich MS, Alberdi EM, Martinez A, Becerra SP. Evidence for pigment epithelium-derived factor receptors in the neural retina. Invest Ophthalmol Vis Sci. 2001 Dec;42 (13):3287-93
  • Becerra SP. Structure-Function Relationships of PEDF. National Eye Institute. December 2006;
  • Becerra SP, Fariss RN, Wu YQ, Montuenga LM, Wong P, Pfeffer BA. Pigment epithelium-derived factor in the monkey retinal pigment epithelium and interphotoreceptor matrix: apical secretion and distribution. Exp Eye Res. 2004 Feb;78 (2):223-34
  • Becerra SP, Palmer I, Kumar A, Steele F, Shiloach J, Notario V, Chader GJ. Overexpression of fetal human pigment epithelium-derived factor in Escherichia coli. A functionally active neurotrophic factor. J Biol Chem. 1993 Nov 5;268 (31):23148-56
  • Becerra SP, Sagasti A, Spinella P, Notario V. Pigment epithelium-derived factor behaves like a noninhibitory serpin. Neurotrophic activity does not require the serpin reactive loop. J Biol Chem. 1995 Oct 27;270 (43):25992-9
  • Cai J, Jiang WG, Grant MB, Boulton M. Pigment epithelium-derived factor inhibits angiogenesis via regulated intracellular proteolysis of vascular endothelial growth factor receptor 1. J Biol Chem. 2006 Feb 10;281 (6):3604-13
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  • Gettins PG, Simonovic M, Volz K. Pigment epithelium-derived factor (PEDF), a serpin with potent anti-angiogenic and neurite outgrowth-promoting properties. Biol Chem. 2002 Nov;383 (11):1677-82
  • Goliath R, Tombran-Tink J, Rodriquez IR, Chader G, Ramesar R, Greenberg J. The gene for PEDF, a retinal growth factor is a prime candidate for retinitis pigmentosa and is tightly linked to the RP13 locus on chromosome 17p13.3. Mol Vis. 1996 Jun 19;2:5
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  • Houenou LJ, D'Costa AP, Li L, Turgeon VL, Enyadike C, Alberdi E, Becerra SP. Pigment epithelium-derived factor promotes the survival and differentiation of developing spinal motor neurons. J Comp Neurol. 1999 Sep 27;412 (3):506-14
  • Jenkins AJ, Zhang SX, Rowley KG, Karschimkus CS, Nelson CL, Chung JS, O'Neal DN, Januszewski AS, Croft KD, Mori TA, Dragicevic G, Harper CA, Best JD, Lyons TJ, Ma JX. Increased serum pigment epithelium-derived factor is associated with microvascular complications, vascular stiffness and inflammation in Type 1 diabetes. Diabet Med. 2007 Dec;24 (12):1345-51
  • Matsunaga N, Chikaraishi Y, Izuta H, Ogata N, Shimazawa M, Matsumura M, Hara H. Role of soluble vascular endothelial growth factor receptor-1 in the vitreous in proliferative diabetic retinopathy. Ophthalmology. 2008 Nov;115 (11):1916-22
  • Meyer C, Notari L, Becerra SP. Mapping the type I collagen-binding site on pigment epithelium-derived factor. Implications for its antiangio
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