Animal-Free Recombinant Human LIF 0 ReviewsSubmit a Review Product Details Catalog Number: AF-300-05 Description: LIF is a pleiotrophic factor produced by multiple cell types, including T cells, myelomonocytic lineages, fibroblasts, liver, heart and melanoma. LIF promotes long-term maintenance of embryonic stem cells by suppressing spontaneous differentiation. Other activities include the stimulation of acute phase protein synthesis by hepatocytes, stimulation of differentiation of cholinergic nerves, and suppression of adipogenesis by inhibiting the lipoprotein lipase in adipocytes. While human LIF is active on mouse cells and is widely used in the maintenance of murine ESC to prevent spontaneous differentiation, mouse LIF is not active on human cells due to its inability to bind to the human LIF receptor. Recombinant Human LIF is a 19.7 kDa protein containing 180 amino acid residues, including three disulfide bonds. Manufactured using all Animal-Free reagents. Source: E.coli Synonyms: Leukemia Inhibitory Factor, Differentiation-stimulating factor, D factor, Melanoma-derived LPL inhibitor (MLPLI), Interleukin 6 family cytokine AA Sequence: SPLPITPVNA TCAIRHPCHN NLMNQIRSQL AQLNGSANAL FILYYTAQGE PFPNNLDKLC GPNVTDFPPF HANGTEKAKL VELYRIVVYL GTSLGNITRD QKILNPSALS LHSKLNATAD ILRGLLSNVL CRLCSKYHVG HVDVTYGPDT SGKDVFQKKK LGCQLLGKYK QIIAVLAQAF Purity: ≥ 98% by SDS-PAGE gel and HPLC analyses. Biological Activity: Determined by its ability to stimulate the proliferation of human TF-1 cells. The expected ED50 is ≤ 0.1 ng/ml, corresponding to a specific activity of ≥ 1 x 107 units/mg. This product has been tested against the WHO standard. International Unit information can be found here. Calculated Molecular Weight: 19.6 kDa Accession Number: P15018 Gene ID: 3976 Endotoxin: Endotoxin level is < 0.01 ng/ug of protein (< 0.1 EU/ug) Cross Reactivity Cited in References: Human, Mouse References PubMed SDS CoA Search Product Line Country Of Origin: USA Not for human use. Research Interest Diabetes/Weight Regulation Immune System Lipid Metabolism Neurobiology Stem Cells & Differentiation Recent Citations First Author Laucirica, D R Title Pseudomonas aeruginosa modulates neutrophil granule exocytosis in an in vitro model of airway infection. Citation Immunology and Cell Biology; 100(5) pg352-370 PubMed ID 35318736 First Author Tan, T Title Chimeric contribution of human extended pluripotent stem cells to monkey embryos ex vivo. Citation Cell; 184(8) pg2020-2032.e14 PubMed ID 33861963