Natural and recombinant FGF basic. This assay cross-reacts 100% with Bovine FGF basic, recombinant Human FGF basic is detectable.
< 0.5% cross-reactivity observed with available related molecules.Cross-species reactivity observed with 1 or more species tested.
No significant interference observed with available related molecules.
The Quantikine Mouse/Rat FGF basic Immunoassay is a 4.5 hour solid phase ELISA
designed to measure mouse or rat FGF basic in cell culture supernates, tissue lysates, serum, and plasma. It contains E.
recombinant rat FGF basic and antibodies raised against the recombinant
factor. This immunoassay has been shown to quantitate the recombinant
factor accurately. Results obtained using natural FGF basic showed
dose-response curves that were parallel to the standard curves obtained
using the recombinant kit standards. These results indicate that this
kit can be used to determine relative mass values for natural FGF basic.
Intra-Assay Precision (Precision within an assay) Three samples of known concentration were tested twenty times on one plate to assess intra-assay precision.
Inter-Assay Precision (Precision between assays) Three samples of known concentration were tested in twenty separate assays to assess inter-assay precision. Assays were performed by at least three technicians using two lots of kit components.
The recovery of FGF basic spiked to levels throughout the range of the assay in various matrices was evaluated.
Average % Recovery
Cell Culture Samples (n=4)
EDTA Plasma (n=4)
Tissue Lysates (n=4)
To assess the linearity of the assay, samples containing and/or spiked with high concentrations of FGF basic 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.
Background: FGF basic
FGF basic (FGF-2) is a growth factor that functions in angiogenesis, wound healing, tissue repair, learning and memory, and the morphogenesis of heart, bone, and brain. It is upregulated in response to inflammatory stimuli and in many tumors. FGF basic binds to FGF R1c and 2c. Its bioactivity is modulated by a number of other binding partners including heparin, Integrin alpha V beta 3, soluble FGF R1, FGF-BP, free gangliosides, Thrombospondin, Pentraxin 3/TSG-14, Fibrinogen, alpha 2-Macroglobulin, PDGF, and CXCL4/PF4. These molecules act as cellular coreceptors or adhesion partners, extracellular matrix decoys or reservoirs, and soluble scavengers or chaperones. In particular, the interaction of FGF basic with cell surface heparan sulfate proteoglycans (HSPG) is required for the binding and activation of FGF receptors.
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.
50 µL Assay Diluent
Add 50 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.
Aspirate each well and wash, repeating the process 3 times for a total of 4 washes.
100 µL Conjugate
Add 100 µL of Conjugate to each well. Cover with a new plate sealer, and incubate at room temperature for 2 hours.
Aspirate and wash 4 times.
100 µL Substrate Solution
Add 100 µL Substrate Solution to each well. Incubate at room temperature for 30 minutes. PROTECT FROM LIGHT.
100 µL Stop Solution
Add 100 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.