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ENO2 Kit ELISA (Enolase 2 (Gamma, Neuronal))

Détail du produit ENO2 Kit ELISA No. ABIN1305165, Fournisseur: Connectez-vous pour afficher
  • AI837106
  • D6Ertd375e
  • DKFZp459B1817
  • Eno-2
  • ENO2
  • eno3
  • Lrpb7
  • NSE
  • RNEN3
  • wu:fc09h05
  • zgc:92418
Kits with alternative reactivity to:
Type de méthode
Sandwich ELISA
Gamme de detection
1.2-178 ng/mL
Seuil minimal de détection
1.2 ng/mL
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Fonction This ELISA (enzyme-linked immunosorbent assay) kit is intended for the quantitative determination of human neuron specific enolase (NSE) levels in patient serum samples. The test might be used as an aid for detecting patients with neuronendocrine differentiated tumors such as small cell lung cancer and neuroblastoma, melanoma, seminoma, and with injury of central nervous system such as traumatic brain injury (TBI).
Marque ED™
Type d'échantillon Serum
Méthode de détection Colorimetric
Ingrédients 1. Streptavidin Coated Microplate
Two sets of two vials each containing human NSE in a lyophilized bovine serum based matrix with a non-azide, non-mercury based preservative. Refer to vials for exact concentration range for each control.
Both controls should be stored at 2-8 °C and are stable until the expiration date on the kit box.
Matériel non inclus 1. Precision single channel pipettes capable of delivering 10 µL, 50 µL, 100 µL, and 1000 µL etc.
2. Repeating dispenser suitable for delivering 100 µL.
3. Disposable pipette tips suitable for above volume dispensing.
4. Disposable 12 x 75 mm or 13 x 100 glass or plastic tubes.
5. Disposable plastic 100 mL and 1000 mL bottle with caps.
6. Aluminum foil.
7. Deionized or distilled water.
8. Plastic microtiter well cover or polyethylene film.
9. ELISA multichannel wash bottle or automatic (semi-automatic) washing system.
10. Spectrophotometric microplate reader capable of reading absorbance at 450 nm.
Autre désignation Neuron Specific Enolase (NSE) (ENO2 ELISA Kit Extrait)
Sujet The glycolytic enzyme enolase (2-phospho-D-glycerate hydrolyase) exists as several dimeric isoenzymes (alpha alpha, alpha beta, beta beta and gamma gamma) composed of three distinct subunits: alpha, beta, and gamma. Three isoenzymes are found in human brain: alpha alpha, alpha beta, and gamma gamma. The heterologous alpha gamma-isoenzyme and the homologous gamma gamma-enolase isoenzymes are known as neuron-specific enolase (NSE) as these isoenzymes initially were detected in neurons and neuroendocrine cells. This test detects both the alpha gamma and the gamma gamma forms by using monoclonal antibodies specific to the gamma-subunit of the enzyme. NSE levels are quite low in normal healthy people and in people with benign disease. Lung cancer is one of the most common cancer forms with incidences about 50-100 per 100,000 population. Approximately 20 % of the lung cancer is small cell lung cancer. NSE has been shown to be a valuable tumor marker of neuroendocrine origin, particularly in small cell lung cancer and in neuroblastoma. Although NSE is similar to Chromogranin A in detecting small cell lung cancer and neuroblastoma, Chromogranin A seems better in detecting carcinoid.
Poids moléculaire 46 kDa
ID gène 2026
NCBI Accession NP_001966.1
UniProt P09404
Domaine de recherche Cell/Tissue Markers, Cancer
Volume d'échantillon 20 μL
Durée du test 4 h
Plaque Strips
Protocole Assay standards, controls and patient samples are added directly to wells of microplate that is coated with a streptavidin. Subsequently, a mixture of a biotinylated NSE specific monoclonal antibody and a horseradish peroxidase (HRP)-labeled NSE specific monoclonal antibody is added to each microtiter well. After the first incubation a sandwich immunocomplex of streptavidin-biotin-monoclonal antibody human NSE monoclonal antibody-HRP is formed. The unbound monoclonal antibodies are removed in the subsequent washing step. For the detection of this immunocomplex, the well is then incubated with a substrate solution in a timed reaction and then measured in a spectrophotometric microplate reader. The enzymatic activity of the immunocomplex bound to the NSE on the wall of the microtiter well is directly proportional to the amount of NSE in the sample. A standard curve is generated by plotting the absorbance versus the respective human NSE concentration for each standard
Préparation des réactifs

(1) Prior to use allow all reagents to come to room temperature. Reagents from different kit lot numbers should not be combined or interchanged.
(2) ELISA Wash Concentrate must be diluted to working solution prior use. Please see REAGENTS section for details.
(3) Reconstitute all assay standards and controls by adding 0.5 mL of deminerialized water to each vial. Allow the standards and controls to sit undisturbed for 10 minutes, and then mix well by inversions or gentle vortexing. Make sure that all solid is dissolved completely prior to use. These reconstituted standards and controls should be stored at 2-8 C for up to 30 days. It is not recommended to freeze the reconstituted standards and controls.

Prélèvement de l'échantillon Only 20 µL of human serum is required for human NSE measurement in duplicate. No special preparation of individual is necessary prior to specimen collection. Whole blood should be collected by venipuncture and must be allowed to clot for a minimum 30 minutes at room temperature before the serum is separated by centrifugation (850 ? 1500xg for 10 minutes). The serum should be separated from the clot within two hours of blood collection and transferred to a clean test tube. Serum samples should be stored at 2 - 8 C if the assay is to be performed within 24 hours. Otherwise, patient samples should be stored at -20 °C or below until measurement. Avoid any repeated freezing and thawing of specimen.
Procédure de l'essai

(1) Place a sufficient number of streptavidin coated microwell strips in a holder to run human NSE standards, controls and unknown samples in duplicate.
(2) Test Configuration
(3) Prepare NSE Tracer Antibody and Capture Antibody working solution by 1:21 fold dilution of the Tracer Antibody with the biotinylated Capture Antibody . For each strip, it is required to mix 1 mL of the Capture Antibody with 50 µL of the Tracer Antibody in a clean test tube.
(4) Add 10 µL of standards, controls and patient samples into the designated microwell.
(5) Add 100 µL of above mixture of Tracer Antibody and Capture Antibody solution to each of the wells.
(6) Cover the plate with the plate sealer and incubate plate at room temperature, shaking at 170 rpm for 1 hour.
(7) Remove plate sealer. Aspirate the contents of each well. Wash each well 5 times by dispensing 350 µL of working wash solution into each well and then completely aspirating the contents. Alternatively, an automated microplate washer can be used.
(8) Add 100 µL of ELISA HRP Substrate into each of the wells
(9) Cover the plate with one plate sealer and also with aluminum foil to avoid exposure to light.
(10) Incubate plate at room temperature for 10 minutes or less.
(11) Remove the aluminum foil and plate sealer. Add 100 µL of ELISA Stop Solution into each of the wells. Mix gently.
(12) Read the absorbance at 450 nm within 10 minutes in a microplate reader. NOTE: to reduce the background, one can set the instrument to dual wavelength measurement at 450 nm with background wavelength correction set at 595 nm, 620 nm or 630 nm.

Calcul des résultats
  1. Calculate the average absorbance for each pair of duplicate test results.
    2. Subtract the average absorbance of the STD 1 (0 ng/mL) from the average absorbance of all other readings to obtain corrected absorbance.
    3. The standard curve is generated by the corrected absorbance of all standard levels on the ordinate against the standard concentration on the abscissa using point-to-point or log-log paper. Appropriate computer assisted data reduction programs may also be used for the calculation of results. We recommend using Point-to-Point curve fit.
Précision du teste The intra-assay precision is validated by measuring two controls samples in a single assay with 20-replicate determinations. The inter-assay precision is validated by measuring two control samples in duplicate in 12 individual assays.
Restrictions For Research Use only
Précaution d'utilisation The reagents must be used in a professional laboratory environment and are for research use only. Source material of bovine serum was derived in the contiguous 48 United States. It was obtained only from healthy donor animals maintained under veterinary supervision and found free of contagious diseases. Wear gloves while performing this assay and handle these reagents as if they are potentially infectious. Avoid contact with reagents containing TMB, hydrogen peroxide, or sulfuric acid. TMB may cause irritation to skin and mucous membranes and cause an allergic skin reaction. TMB is a suspected carcinogen. Sulfuric acid may cause severe irritation on contact with skin. Do not get in eyes, on skin, or on clothing. Do not ingest or inhale fumes. On contact, flush with copious amounts of water for at least 15 minutes. Use Good Laboratory Practices.
Stock 4 °C
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ELISA image for ENO2 Kit ELISA (Enolase 2 (Gamma, Neuronal)) (ABIN1305165) Enolase 2 (Gamma, Neuronal) (ENO2) ELISA Kit