Mouse/Rat FABP1/L-FABP Quantikine ELISA Kit Summary

Product Summary

The Quantikine Rat IL-4 Immunoassay is a 4.5 hour solid phase ELISA designed to measure rat IL-4 levels in cell culture supernates and serum. It contains E. coli-expressed recombinant rat IL-4 and antibodies raised against the recombinant factor. This immunoassay has been shown to quantitate the recombinant rat IL-4 accurately. Results obtained using natural rat IL-4 showed dose response curves that were parallel to the standard curves obtained using the recombinant Quantikine kit standards. These results indicate that this kit can be used to determine relative mass values for natural rat IL-4.

Preparation and Storage

Background: FABP1/L-FABP

Fatty Acid Binding Protein 1, also known as liver FABP, is a cytoplasmic transporter for long chain fatty acids, oxidized/peroxidized fatty acids, cholesterol, heme, Vitamin K, steroids, acyl CoA, leukotrienes, and prostaglandins. It is expressed by hepatocytes, simple columnar epithelium of the small intestine, and renal proximal tubule epithelium. FABP1 trafficks between the cytosol, peroxisomes, and nucleus. It delivers fatty acid cargo to the transcription factor PPAR alpha, leading to increased production of enzymes involved in the beta-oxidation of fatty acids. FABP1 also plays a role in the formation of prechylomicron vesicles by the endoplasmic reticulum.

Assay Procedure

Refer to the product datasheet for the 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.

1、Prepare all reagents, standard dilutions, and samples as directed in the product insert.

2、Remove excess microplate strips from the plate frame, return them to the foil pouch containing the desiccant pack, and reseal.

3、Add 50 μL of Assay Diluent to each well.

4、Add 50 μL of Standard, control, or sample to each well. Cover with a plate sealer, and incubate at room temperature for 2 hours.

5、Aspirate each well and wash, repeating the process 4 times for a total of 5 washes.

6、Add 100 μL of Conjugate to each well. Cover with a new plate sealer, and incubate at room temperature for 2 hours.

7、Aspirate and wash 5 times.

8、Add 100 μL Substrate Solution to each well.

9、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.