Natural and recombinant human Trefoil Factor 3 (TFF3)
< 0.5% cross-reactivity observed with available related molecules.< 50% cross-species reactivity observed with species tested.
No significant interference observed with available related molecules.
QC166, Quantikine Immunoassay Control Set 787 for Human TFF3 - Please Inquire
The Quantikine Human TFF3 Immunoassay is a 4.5 hour solid-phase
ELISA designed to measure human TFF3 in cell culture supernates,
serum, plasma, saliva, and urine. It contains CHO cell-expressed recombinant human TFF3 and has been shown to accurately quantitate the recombinant
factor. Results obtained using natural human TFF3 showed linear
curves that were parallel to the standard curves obtained using the
Quantikine kit standards. These results indicate that this kit can be
used to determine relative mass values for naturally occurring human TFF3.
Intra-Assay Precision (Precision within an assay) Three samples of a known concentration were tested on one plate to assess intra-assay precision.
Inter-Assay Precision (Precision between assays) Three samples of a known concentration were tested in separate assays
to determine inter-assay precision. Assays were performed by at least
three technicians using two lots of kit components.
The recovery of human TFF3 spiked to levels throughout the range
of the assay was evaluated.
Average % Recovery
Cell Culture Supernates (n=4)
To assess the linearity of the assay, samples containing high concentrations of human TFF3 were serially diluted with Calibrator Diluent to produce samples with values within
the dynamic range of the assay.
Preparation and Storage
Store the unopened product at 2 - 8 °C. Do not use past expiration date.
TFF3 (Trefoil Factor 3), also known as ITF and P1.B, is a peptide that plays an important role in epithelial regeneration and wound healing. It can form disulfide-linked dimers or associate into disulfide-linked complexes with the intestinal mucous proteins FCGBP and MUC-2. TFF3 is expressed by epithelial goblet cells in the respiratory tract, biliary and breast ducts, small and large intestine, and cardia of the stomach as well as by chondrocytes during bone development. TFF3 is upregulated in response to gastrointestinal epithelial disruptions and promotes epithelial wound healing. It enhances tumor cell invasion and metastasis by supporting hypoxia-induced VEGF upregulation.
Refer to the product for complete assay procedure.
Bring all reagents and samples to room temperature before use. It is recommended that all samples, standards, and controls be assayed in duplicate.
Prepare all reagents, standard dilutions, and samples as directed in the product insert.
Remove excess microplate strips from the plate frame, return them to the foil pouch containing the desiccant pack, and reseal.
100 µL Assay Diluent
Add 100 µL of Assay Diluent to each well.
50 µL Standard, Control, or Sample
Add 50 µL of Standard, control, or sample to each well. Cover with a plate sealer, and incubate at room temperature for 2 hours on a horizontal orbital microplate shaker.
Aspirate each well and wash, repeating the process 3 times for a total of 4 washes.
200 µL Conjugate
Add 200 µL of Conjugate to each well. Cover with a new plate sealer, and incubate at room temperature for 2 hours on the shaker.
Aspirate and wash 4 times.
200 µL Substrate Solution
Add 200 µL Substrate Solution to each well. Incubate at room temperature for 30 minutes on the benchtop. PROTECT FROM LIGHT.
50 µL Stop Solution
Add 50 µL of Stop Solution to each well. Read at 450 nm within 30 minutes. Set wavelength correction to 540 nm or 570 nm.
R&D Systems personnel manually curate a database that contains references using R&D Systems products.
The data collected includes not only links to publications in PubMed,
but also provides information about sample types, species, and experimental conditions.
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