IL-4 BioAssay(TM) ELISA Kit, Rat

Sandwich ELISA quantitative detection kit for Rat IL-4 in cell culture supernates and serum.\n\nInterleukin-4 (IL-4), also knowns as a B-cell stimulatory factor1 (BSF1), is an immunomodulatory cytokine, which can inhibit the growth of tumour cells.1 The human cDNA contains a single open reading frame encoding a protein of 153 amino acids, including a putative signal peptide. IL-4 may act as an autocrine growth factor in pancreatic cancer cells and also give rise to the possibility that cancer-derived IL-4 may suppress cancer-directed immunosurveillance in vivo in addition to its growth-promoting effects, thereby facilitating pancreatic tumor growth and metastasis.1 The mouse and human genes and their protein products show structural and functional similarities. The human IL-4 gene, which occurs as a single copy in the haploid genome, is mapped on chromosome 5.2 Rat IL-4 is a 13.5kD glycoprotein, consisting of 147 amino acids in precursor form and 123 amino acids in mature form.\n\nAssay Range:\n15.6pg/ml-1000pg/ml\n\nSensitivity:\n< 1 pg/ml\n\nCrossreactivity:\nThere is no detectable cross-reactivity with other relevant proteins.\n\nUniprot ID:\nP20096\n\nEntrez Gene ID:\n287287\n\nKit Components:\n96-well plate pre-coated with anti-IL-4, Rat\nLyophilized recombinant IL-4, Rat standard, 10ng/tube, 2Ea\nUSB Cat No Kit Component\n143696 Avidin-Biotin-Peroxidase Complex (ABC), 130ul (1:100 dilution)\n143697 Sample diluent buffer, 30ml\n143698 Antibody diluent buffer, 12ml\n143699 ABC diluent buffer, 12ml\n143700 TMB color developing agent, 10ml\n143701 TMB stop solution, 10ml\n\nStorage and Handling:\nStore at 4 degrees C for 6 months, at -20 degrees C for 12 months. Avoid multiple freeze-thaw cycles.

Prices direct from United States Biological

Quick response times

Exclusive Biosave savings/discounts

SPECIFICATIONS

Catalog Number

143926

Size

96Tests

References

1. Prokopchuk, O.; Liu, Y.; Henne-Bruns, D.; Kornmann, M. Interleukin-4 enhances proliferation of human pancreatic cancer cells: evidence for autocrine and paracrine actions. Br J Cancer.2005 Mar 14;92(5):921-8.\n2. Arai, N.; Nomura, D.; Villaret, D.; DeWaal Malefijt, R.; Seiki, M.; Yoshida, M.; Minoshima, S.; Fukuyama, R.; Maekawa, M.; Kudoh, J.; Shimizu, N.; Yokota, K.; Abe, E.; Yokota, T.; Takebe, Y.; Arai, K. Complete nucleotide sequence of the chromosomal gene for human IL-4 and its expression. J. Immun. 142: 274-282, 1989. \n