Cetuximab ELISA Kit

Produktnummer ABIN4886391

Dieses Colorimetric ELISA-Kit wurde entwickelt für die quantitative Messung von Human, Maus und Ratte Cetuximab. Es ist 1 Publikation verfügbar.

Kurzübersicht für Cetuximab ELISA Kit (ABIN4886391)

Target: Cetuximab

Reaktivität: Human, Maus, Ratte

Nachweismethode: Colorimetric

Methodentyp: Sandwich ELISA

Detektionsbereich: 1.56-50 ng/mL

Applikation: ELISA

Proben: Plasma, Serum

Produktdetails Cetuximab ELISA Kit

Untere Nachweisgrenze: 1.56 ng/mL

Verwendungszweck: Quantification of Cetuximab in biological matrices

Analytische Methode: Quantitative

Spezifität: Cetuximab (Erbitux)

Bestandteile: Coated microtiter plate, 96 wells
Calibrator diluent. - 1.8ml
Calibrator 12ul
10X wash buffer - 25ml
Assay buffer - 50ml
1000X detection reagent - 17ul
TMB - 12ml
TMB stop solution - 12ml
Plate sealers - 3

Benötigtes Material: Precision pipettes calibrated to deliver 5-1000μL
Multi-channel pipette calibrated to deliver 50-200μL
Plate shaker
Disposable tips
Vortex-Mixer
Distilled or de-ionized water
Microplate reader capable of reading 450nm with background subtrac

Anwendungsinformationen

Applikationshinweise: Optimal working dilution should be determined by the investigator.

Probenmenge: 15 μL

Testdauer: 2.5 h

Plattentyp: Pre-coated

Protokoll: The Cetuximab ELISA kit is designed to measure free Cetuximab with high specificity and sensitivity . This assay employs the sandwich enzyme immunoassay technique. A precoated anti-Cetuximab 96 well plate is provided. Calibrator, quality control samples and test samples are pipetted into the appropriate wells. Cetuximab present in biological matrices is bound by the immobilized capture antibody. After washing away any unbound substances, enzyme linked detection antibody is added to the wells. The plate is washed to remove any unbound antibody-enzyme reagent and a substrate solution is added to the wells for color development. The color development is proportional to the amount of Cetuximab present in test samples and the concentration is calculated from the standard series.

Aufbereitung der Reagenzien:

Prepare only the appropriate amount of required reagent on the day of use. Store all reagents as per instructions stated on the label. 1. Wash Buffer (1X) Preparation Dilute wash buffer concentrate with deionized water 1/10 before use (for example add 20 mL concentrate to 180 mL deionized water). Mix well. 2. Detection Reagent (1X) Preparation: Dilute detection reagent with assay buffer 1/1000 before use (for example add 11 μL concentrate to 11 mL of assay buffer). Mix well. 3. Preparation of Calibrators: Prepare calibrators with concentrations ranging from 5,000 ng/mL to 156 ng/mL. The following is an example calibrator curve.

Probennahme: This kit is compatible with EDTA-plasma, heparinplasma and serum samples. Samples can be stored at or below -20 °C for up to 1 year.

Aufbereitung der Proben:

Dilute calibrators and test samples 1/100 with assay buffer (for example add 5μL of prepared calibrator or sample to 495μL of assay buffer). Mix well. Do not store diluted samples.

Testdurchführung:

This assay employs the sandwich enzyme immunoassay technique. Anti- Cetuximab is coated onto a 96 well microplate. Calibrator, quality control samples (if desired) and test samples are pipetted into the appropriate wells. Cetuximab present in biological matrices is bound by the immobilized anti- Cetuximab antibody. After washing away any unbound substances, enzyme linked anti- Cetuximab antibody is added to the wells. This antibody is developed and purified specifically against truncated Erbitux® (domain residing in Fc portion of the Erbitux® molecule). The plate is washed to remove any unbound antibody-enzyme reagent and a substrate solution is added to the wells for color development. The color development is proportional to the amount of Cetuximab present in test samples. The color development is stopped and the intensity of the color is measured.

Ergebnisberechnung:

1. Construct a standard curve by plotting the absorbance obtained from each standard against concentration. Use a 4 or 5 parameter curve fit. Alternatively a log-log curve fit may be used. 2. The concentration of the unknowns can be read directly from this standard curve using the absorbance value for each sample. 3. Any sample undiluted or diluted still reading greater than the highest standard should be diluted appropriately with calibrator diluent and retested. If the samples have been diluted, the concentration determined from the standard curve must be multiplied by the dilution factor.

Testpräzision: Precision: The precision was determined by analyzing samples prepared at 500 ng/mL in 6 replicates on 6 different occasions. Intra-assay coefficient of variation (CV) < 10%. Inter-assay CV < 10%.

Recovery: 1000 ng/mL of Cetuximab was spiked in 10 lots of human serum. Recovery ranges are from 91-113% with an average recovery of 106%.

Beschränkungen: Nur für Forschungszwecke einsetzbar

Handhabung

Konservierungsmittel: Without preservative

Vorsichtsmaßnahmen: Read manual completely before beginning

Lagerung: -20 °C

Informationen zur Lagerung: Store kit components at -20°C unless specified otherwise. DO NOT USE past kit expiration date. Some vials contain a small amount of reagents. Spin tubes on pulse setting prior to opening.

Haltbarkeit: 12 months

Referenzen für Cetuximab ELISA Kit (ABIN4886391)

van Helden, Elias, Gerritse, van Es, Boon, Huisman, van Grieken, Dekker, van Dongen, Vugts, Boellaard, van Herpen, de Vries, Oyen, Brouwers, Verheul, Hoekstra, Menke-van der Houven van Oordt: "[89Zr]Zr-cetuximab PET/CT as biomarker for cetuximab monotherapy in patients with RAS wild-type advanced colorectal cancer." in: European journal of nuclear medicine and molecular imaging, Vol. 47, Issue 4, pp. 849-859, (2021) (PubMed).

Details zu Cetuximab

Target: Cetuximab

Substanzklasse: Antibody

Hintergrund: Cetuximab (Erbitux®) is a chimeric IgG1 monoclonal antibody that binds the extra-cellular domain of the epidermal growth factor receptor (EGFR). It is a 152- kDa molecule composed of four polypeptide chains: two identical heavy chains and two identical light chains, consisting of 449 and 214 amino acids, respectively, bound by covalent and non-covalent bonds. The bond with EGFR is characterized by a higher affinity than either endogenous ligand, as epidermal growth factor (EGF), or transforming growth factor alpha. This binding inhibits activation of the receptor tyrosine kinase and the associated downstream signaling that includes the mitogenactivated protein kinase, phosphoinositide 3-kinase/ Akt and the Janus kinases/ signal transducers and activator of transcription (Stat) pathways. Furthermore Cetuximab induces antibody-mediated receptor dimerization, internalization and degradation leading to receptor down-regulation. In addition, it exhibits antibody-dependent cellular cytotoxicity that could contribute to its antitumor effect.

Gen-ID: 1956