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Human NQO1 ELISA Kit

SKU:
HUFI01792
Product Type:
ELISA Kit
Size:
96 Assays
Uniprot:
P15559
Sensitivity:
0.188ng/ml
Range:
0.313-20ng/ml
ELISA Type:
Sandwich
Synonyms:
NQO1, DTD, QR1, DHQU, DIA4, NMOR1, NMORI, Azoreductase,, Diaphorase-4, Dioxin-inducible 1, Menadione Reductase, Quinone Reductase 1, DIA4azoreductase, diaphorase, NADH, NADPH, cytochrome b-5 reductase, dioxin-inducible 1, DT-diaphorase, NAD, PH:menad
Reactivity:
Human
Research Area:
Cell Biology
€599
Frequently bought together:

Description

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Human NQO1 ELISA Kit

The Human NQO1 (NAD(P)H dehydrogenase quinone 1) ELISA Kit is a highly sensitive and specific assay designed for the accurate measurement of NQO1 levels in human samples such as serum, plasma, and cell culture supernatants. This kit provides researchers with reliable and reproducible results, making it suitable for a variety of research applications.NQO1 is an important enzyme involved in the detoxification of harmful quinones and protection against oxidative stress.

Abnormal NQO1 levels have been linked to various diseases including cancer, neurodegenerative disorders, and cardiovascular diseases. Therefore, this kit is a valuable tool for studying the role of NQO1 in these conditions and exploring potential therapeutic interventions.

Product Name:Human NQO1 ELISA Kit
Product Code:HUFI01792
Size:96 Assays
Alias:NQO1, DTD, QR1, DHQU, DIA4, NMOR1, NMORI, Azoreductase, Diaphorase-4, Dioxin-inducible 1, Menadione Reductase, Quinone Reductase 1, DIA4azoreductase, diaphorase, NADH, NADPH, cytochrome b-5 reductase, dioxin-inducible 1, DT-diaphorase, NAD, PH:menadione oxidoreductase 1, NAD, PH:Quinone acceptor oxidoreductase type 1, NAD, PH:quinone oxidoreductase 1, diaphorase-4, Phylloquinone reductase
Detection method:Sandwich ELISA, Double Antibody
Application:This immunoassay kit allows for the in vitro quantitative determination of Human NQO1 concentrations in serum plasma and other biological fluids.
Sensitivity:0.188ng/ml
Range:0.313-20ng/ml
Storage:4°C for 6 months
Note:For Research Use Only
Recovery:Matrices listed below were spiked with certain level of Human NQO1 and the recovery rates were calculated by comparing the measured value to the expected amount of Human NQO1 in samples.
MatrixRecovery range(%)Average(%)
serum(n=5)85-10598
EDTA plasma(n=5)86-10597
UFH plasma(n=5)88-10094
Linearity:The linearity of the kit was assayed by testing samples spiked with appropriate concentration of Human NQO1 and their serial dilutions. The results were demonstrated by the percentage of calculated concentration to the expected.
Sample1:21:41:8
serum(n=5)93-101%90-101%85-103%
EDTA plasma(n=5)85-100%85-94%84-93%
UFH plasma(n=5)81-99%81-100%82-98%
CV(%):Intra-Assay: CV<8%
Inter-Assay: CV<10%
ComponentQuantityStorage
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:

  • 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
UniprotP15559
UniProt Protein Function:NQO1: a FAD-binding flavoprotein enzyme that that prevents the one electron reduction of quinones that results in the production of radical species. Involved in detoxification pathways as well as in biosynthetic processes such as the vitamin K-dependent gamma-carboxylation of glutamate residues in prothrombin synthesis. Mutations have been associated with tardive dyskinesia (TD), an increased risk of hematotoxicity after exposure to benzene, and susceptibility to various forms of cancer. The expression of NQO1 is increased in liver, colon and breast tumors and non-small cell lung cancer (NSCLC) compared with the normal tissues. Moreover, expression levels are also elevated in developing tumors, suggesting a role for NQ01 in the prevention of tumor development. A homozygous common missense variant (NQO1(*)2, rs1800566(T)), that disables NQO1 strongly predicts poor survival among two independent series of women with breast cancer. Studies on NQO1 knockout mice suggest that the lack of NQO1 enzymatic activity changes intracellular redox states resulting in a reduction in apoptosis, which in turn leads to myeloid hyperplasia of bone marrow. Altered expression is associated with Alzheimer's disease (AD). Inhibited by dicoumarol. 2 isoforms of the human protein are produced by alternative splicing.
UniProt Protein Details:Protein type:Oxidoreductase; EC 1.6.5.2

Chromosomal Location of Human Ortholog: 16q22.1

Cellular Component: cell soma; cytoplasm; cytosol

Molecular Function:identical protein binding; protein binding; NAD(P)H dehydrogenase (quinone) activity; cytochrome-b5 reductase activity; superoxide dismutase activity

Biological Process: response to ethanol; removal of superoxide radicals; response to toxin; xenobiotic metabolic process; positive regulation of neuron apoptosis; negative regulation of catalytic activity; regulation of amino acid metabolic process; nitric oxide biosynthetic process; response to nutrient; response to estradiol stimulus; aging; synaptic transmission, cholinergic

NCBI Summary:This gene is a member of the NAD(P)H dehydrogenase (quinone) family and encodes a cytoplasmic 2-electron reductase. This FAD-binding protein forms homodimers and reduces quinones to hydroquinones. This protein's enzymatic activity prevents the one electron reduction of quinones that results in the production of radical species. Mutations in this gene have been associated with tardive dyskinesia (TD), an increased risk of hematotoxicity after exposure to benzene, and susceptibility to various forms of cancer. Altered expression of this protein has been seen in many tumors and is also associated with Alzheimer's disease (AD). Alternate transcriptional splice variants, encoding different isoforms, have been characterized. [provided by RefSeq, Jul 2008]
UniProt Code:P15559
NCBI GenInfo Identifier:118607
NCBI Gene ID:1728
NCBI Accession:P15559.1
UniProt Related Accession:P15559
Molecular Weight:
NCBI Full Name:NAD(P)H dehydrogenase
NCBI Synonym Full Names:NAD(P)H quinone dehydrogenase 1
NCBI Official Symbol:NQO1  
NCBI Official Synonym Symbols:DTD; QR1; DHQU; DIA4; NMOR1; NMORI  
NCBI Protein Information:NAD(P)H dehydrogenase [quinone] 1
UniProt Protein Name:NAD(P)H dehydrogenase [quinone] 1
UniProt Synonym Protein Names:Azoreductase; DT-diaphorase; DTD; Menadione reductase; NAD(P)H:quinone oxidoreductase 1; Phylloquinone reductase; Quinone reductase 1; QR1
Protein Family:NAD(P)H dehydrogenase
UniProt Gene Name:NQO1  
UniProt Entry Name:NQO1_HUMAN

*Note: Protocols are specific to each batch/lot. For the correct instructions please follow the protocol included in your kit.

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.

StepProtocol
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.

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
SerumIf 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.

PlasmaCollect 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 FluidCollect 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 supernatantCollect 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 lysatesSolubilize 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 homogenatesThe 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 lysatesRinse 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 MilkCollect 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.

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