Human PAI1 / Plasminogen activator inhibitor 1 ELISA Kit

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SKU:
HUFI00386
€299

Description

ELISA Kit Technical ManualELISA Kit Technical ManualMSDS

Human PAI1 / Plasminogen activator inhibitor 1 ELISA Kit - Information

The ELISA Genie PAI1 / Plasminogen activator inhibitor 1 ELISA Kit can assay for PAI1 / Plasminogen activator inhibitor 1 in the following samples: serum, blood, plasma, cell culture supernatant and other related supernatants and tissues.

How our PAI1 / Plasminogen activator inhibitor 1 ELISA Kits Work?

The ELISA Genie (enzyme-linked immunosorbent assays) assay kits are designed for the quantitative measurement of analytes in a wide variety of samples. As today's scientists demand high quality consistent data for high impact journals, ELISA Genie have developed our range of sensitive, fast and reliable ELISA kit assays to meet and exceed those demands. Our assay kits use a quantitative sandwich ELISA technique and each kit comes with highly specific antibodies pre-coated onto a 96-well microtiter plate.

At ELISA Genie we understand the need for speed! Therefore, we have developed an ultra-fast protocol meaning you achieve your results rapidly. So, once you have prepared and plated your samples, blanks and standards, you simply incubate with a highly specific biotin-conjugated primary antibody and Avidin conjugated to Horseradish Peroxidase (HRP) and incubate for the appropriate length of time. After washing the plate according to the protocol and addition of the TMB (3,3',5,5'-Tetramethylbenzidine) solution, the appearance of a blue colour should be detected due to an enzymatic reaction catalysed by HRP. Next step is the addition of the Stop Solution which terminates the HRP reaction and the blue colour turns yellow with the signal intensity measured on a plate reader at 450nm. The amount of bound PAI1 / Plasminogen activator inhibitor 1 is proportional to the signal generated by the reaction meaning the kit assay gives you a quantitative measurement of the analyte in your samples.

Human PAI1 / Plasminogen activator inhibitor 1 ELISA Kit - Data

Description

Serine protease inhibitor. This inhibitor acts as 'bait' for tissue plasminogen activator, urokinase, protein C and matriptase-3/TMPRSS7. Its rapid interaction with PLAT may function as a major control point in the regulation of fibrinolysis.

Post-Translational Modification

Inactivated by proteolytic attack of the urokinase-type (u-PA) and the tissue-type (TPA), cleaving the 369-Arg-|-Met-370 bond.

Uniprot ID P05121
Alias

PAI-1/PAI1/SERPINE1/Nexin/PLANH1/Endothelial plasminogen activator inhibitor/PAISerpin E1/PLANH1/plasminogen activator inhibitor 1/serine(or cysteine) proteinase inhibitor clade E(nexin plasminogenactivator inhibitor type 1) member 1/serpin peptidase inhibitor clade E(nexin plasminogen activator inhibitortype 1) member 1

Detection method

Sandwich ELISA Double Antibody

Application

This immunoassay kit allows for the in vitro quantitative determination of SERPINE1 concentrations in serum plasma and other biological fluids.

Size

96T

Range

0.312-20ng/ml

Sensitivity

< 0.188ng/ml

Storage

4'C for 6 months

Recovery

Matrices listed below were spiked with certain level of SERPINE1 and the recovery rates were calculated by comparing the measured value to the expected amount of SERPINE1 in samples.

Matrix Recovery range(%) Average(%)
serum(n=5) 88-96 92
EDTA plasma(n=5) 86-103 93
UFH plasma(n=5) 85-105 96
Linearity

The linearity of the kit was assayed by testing samples spiked with appropriate concentration of SERPINE1 and their serial dilutions. The results were demonstrated by the percentage of calculated concentration to the expected.

Sample 1:2 1:4 1:8 1:16
serum(n=5) 91-105% 85-95% 88-104% 94-103%
EDTA plasma(n=5) 90-100% 84-99% 82-100% 85-101%
UFH plasma(n=5) 80-99% 81-99% 83-95% 81-100%
CV(%)

Intra-Assay: CV<8%
Inter-Assay: CV<10%

Note

For Research Use Only

Human PAI1 / Plasminogen activator inhibitor 1 ELISA Kit Protocol

The below protocol is a sample protocol for Human PAI1 / Plasminogen activator inhibitor 1 ELISA Kit using a biotinylated detection antibody and streptavidin-HRP. Sandwich ELISAs allow for the detection and quantification of an analyte in a sample by using known analyte concentrations as standards and plotting absorbance of known concentrations vs known standard concentrations. This allows the researcher to calculate the amount of Human PAI1 / Plasminogen activator inhibitor 1 present in their sample.

Before adding to wells, equilibrate the SABC working solution and TMB substrate for at least 30 min at 37 °C. When diluting samples and reagents, they must be mixed completely and evenly. It is recommended to plot a standard curve for each test.

Sandwich Protocol

Sandwich ELISA Protocol

Kit Protocol:

1.Set standard, test sample and control (zero) wells on the pre-coated plate respectively, and then, record their positions. It is recommended to measure each standard and sample in duplicate. Wash plate 2 times before adding standard, sample and control (zero) wells!
2.Aliquot 0.1ml standard solutions into the standard wells.
3.Add 0.1 ml of Sample / Standard dilution buffer into the control (zero) well.
4.Add 0.1 ml of properly diluted sample ( Human serum, plasma, tissue homogenates and other biological fluids.) into test sample wells.
5.Seal the plate with a cover and incubate at 37 °C for 90 min.
6.Remove the cover and discard the plate content, clap the plate on the absorbent filter papers or other absorbent material. Do NOT let the wells completely dry at any time. Wash plate X2.
7.Add 0.1 ml of Biotin- detection antibody working solution into the above wells (standard, test sample & zero wells). Add the solution at the bottom of each well without touching the side wall.
8.Seal the plate with a cover and incubate at 37°C for 60 min.
9.Remove the cover, and wash plate 3 times with Wash buffer. Let wash buffer rest in wells for 1 min between each wash.
10.Add 0.1 ml of SABC working solution into each well, cover the plate and incubate at 37°C for 30 min.
11.Remove the cover and wash plate 5 times with Wash buffer, and each time let the wash buffer stay in the wells for 1-2 min.
12.Add 90 µl of TMB substrate into each well, cover the plate and incubate at 37°C in dark within 10-20 min. (Note: This incubation time is for reference use only, the optimal time should be determined by end user.) And the shades of blue can be seen in the first 3-4 wells (with most concentrated standard solutions), the other wells show no obvious color.
13.Add 50 µl of Stop solution into each well and mix thoroughly. The color changes into yellow immediately.
14. Read the O.D. absorbance at 450 nm in a microplate reader immediately after adding the stop solution.

Human PAI1 / Plasminogen activator inhibitor 1 ELISA Kit components

96 Assays

Storage

ELISA Microplate(Dismountable)8×12 strips4°C for 6 months
Lyophilized Standard24°C/-20°C
Sample/Standard Dilution Buffer20ml4°C
Biotin-labeled Antibody(Concentrated)120ul4°C (Protect from light)
Antibody Dilution Buffer10ml4°C
HRP-Streptavidin Conjugate(SABC)120ul4°C (Protect from light)
SABC Dilution Buffer10ml4°C
TMB Substrate10ml4°C (Protect from light)
Stop Solution10ml4°C
Wash Buffer(25X)30ml4°C
Plate Sealer5 -

Other materials and equipment required:

The ELISA Genie Human PAI1 / Plasminogen activator inhibitor 1 ELISA Kit will require other equipment and materials to carry out the assay. Please see list below for further details.
  • Microplate reader with 450 nm wavelength filter
  • Multichannel Pipette, Pipette, microcentrifuge tubes and disposable pipette tips
  • Incubator
  • Deionized or distilled water
  • Absorbent paper
  • Buffer resevoir

Sample Preparation

When carrying out an ELISA assay it is important to prepare your samples in order to achieve the best possible results. Below we have a list of procedures for the preparation of samples for different sample types.

Sample TypeProtocol

Serum

If using serum separator tubes, allow samples to clot for 30 minutes at room temperature. Centrifuge for 10 minutes at 1,000x g. Collect the serum fraction and assay promptly or aliquot and store the samples at -80°C. Avoid multiple freeze-thaw cycles.

If serum separator tubes are not being used, allow samples to clot overnight at 2-8°C. Centrifuge for 10 minutes at 1,000x g. Remove serum and assay promptly or aliquot and store the samples at -80°C. Avoid multiple freeze-thaw cycles.

Plasma

Collect plasma using EDTA or heparin as an anticoagulant. Centrifuge samples at 4°C for 15 mins at 1000 × g within 30 mins of collection. Collect the plasma fraction and assay promptly or aliquot and store the samples at -80°C. Avoid multiple freeze-thaw cycles. Note: Over haemolysed samples are not suitable for use with this kit.

Urine & Cerebrospinal Fluid

Collect the urine (mid-stream) in a sterile container, centrifuge for 20 mins at 2000-3000 rpm. Remove supernatant and assay immediately. If any precipitation is detected, repeat the centrifugation step. A similar protocol can be used for cerebrospinal fluid.

Cell culture supernatant

Collect the cell culture media by pipette, followed by centrifugation at 4°C for 20 mins at 1500 rpm. Collect the clear supernatant and assay immediately.

Cell lysates

Solubilize cells in lysis buffer and allow to sit on ice for 30 minutes. Centrifuge tubes at 14,000 x g for 5 minutes to remove insoluble material. Aliquot the supernatant into a new tube and discard the remaining whole cell extract. Quantify total protein concentration using a total protein assay. Assay immediately or aliquot and store at ≤ -20 °C.

Tissue homogenates

The preparation of tissue homogenates will vary depending upon tissue type. Rinse tissue with 1X PBS to remove excess blood & homogenize in 20ml of 1X PBS (including protease inhibitors) and store overnight at ≤ -20°C. Two freeze-thaw cycles are required to break the cell membranes. To further disrupt the cell membranes you can sonicate the samples. Centrifuge homogenates for 5 mins at 5000xg. Remove the supernatant and assay immediately or aliquot and store at -20°C or -80°C.

Tissue lysates

Rinse tissue with PBS, cut into 1-2 mm pieces, and homogenize with a tissue homogenizer in PBS. Add an equal volume of RIPA buffer containing protease inhibitors and lyse tissues at room temperature for 30 minutes with gentle agitation. Centrifuge to remove debris. Quantify total protein concentration using a total protein assay. Assay immediately or aliquot and store at ≤ -20 °C.

Breast Milk

Collect milk samples and centrifuge at 10,000 x g for 60 min at 4°C. Aliquot the supernatant and assay. For long term use, store samples at -80°C. Minimize freeze/thaw cycles.

Human PAI1 / Plasminogen activator inhibitor 1 ELISA Kit Protein Information

UniProt Protein Function:SERPINE1: a secreted protein that acts as 'bait' for tissue plasminogen activator, urokinase, and protein C. Its rapid interaction with TPA may function as a major control point in the regulation of fibrinolysis. Belongs to the serpin family. Interacts with VTN. Binds LRP1B; binding is followed by internalization and degradation. Plasma levels of PAI-1 and VCAM-1 together may be useful in predicting post-operative recurrence in patients with colorectal cancer.
UniProt Protein Details:

Protein type:Secreted, signal peptide; Motility/polarity/chemotaxis; Secreted

Chromosomal Location of Human Ortholog: 7q22.1

Cellular Component: extracellular matrix; extracellular space; extracellular region; plasma membrane

Molecular Function:serine-type endopeptidase inhibitor activity; protein binding; protease binding; receptor binding

Biological Process: circadian rhythm; transcription initiation from RNA polymerase II promoter; platelet activation; extracellular matrix organization and biogenesis; positive regulation of blood coagulation; transcription, DNA-dependent; negative regulation of blood coagulation; negative regulation of smooth muscle cell migration; defense response to Gram-negative bacterium; positive regulation of receptor-mediated endocytosis; regulation of cell proliferation; positive regulation of interleukin-8 production; fibrinolysis; positive regulation of angiogenesis; platelet degranulation; negative regulation of fibrinolysis; transforming growth factor beta receptor signaling pathway; gene expression; positive regulation of transcription from RNA polymerase II promoter; regulation of receptor activity; angiogenesis; chronological cell aging; blood coagulation; negative regulation of cell adhesion mediated by integrin; negative regulation of cell migration; positive regulation of inflammatory response

Disease: Plasminogen Activator Inhibitor-1 Deficiency

NCBI Summary:This gene encodes a member of the serine proteinase inhibitor (serpin) superfamily. This member is the principal inhibitor of tissue plasminogen activator (tPA) and urokinase (uPA), and hence is an inhibitor of fibrinolysis. Defects in this gene are the cause of plasminogen activator inhibitor-1 deficiency (PAI-1 deficiency), and high concentrations of the gene product are associated with thrombophilia. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Sep 2009]
UniProt Code:P05121
NCBI GenInfo Identifier:129576
NCBI Gene ID:5054
NCBI Accession:P05121.1
UniProt Secondary Accession:P05121,B7Z4S0, F8WD53,
UniProt Related Accession:P05121
Molecular Weight:43,404 Da
NCBI Full Name:Plasminogen activator inhibitor 1
NCBI Synonym Full Names:serpin peptidase inhibitor, clade E (nexin, plasminogen activator inhibitor type 1), member 1
NCBI Official Symbol:SERPINE1  
NCBI Official Synonym Symbols:PAI; PAI1; PAI-1; PLANH1  
NCBI Protein Information:plasminogen activator inhibitor 1; serpin E1; endothelial plasminogen activator inhibitor; serine (or cysteine) proteinase inhibitor, clade E (nexin, plasminogen activator inhibitor type 1), member 1
UniProt Protein Name:Plasminogen activator inhibitor 1
UniProt Synonym Protein Names:Endothelial plasminogen activator inhibitor; Serpin E1
UniProt Gene Name:SERPINE1  
UniProt Entry Name:PAI1_HUMAN
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Additional Information

Reactivity:
Human
ELISA Type:
Sandwich
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