Human FLT3L Recombinant Protein is supplied as lyophilized material that is very stable at -20°C. It is recommended to reconstitute with sterile water at a concentration of 0.1 mg/ml which can be further diluted in aqueous solutions as needed. Addition of a carrier protein (0.1% HSA or BSA) is recommended for long-term storage.
Once in solution, store at 4°C and use within 1 month, or store at -20ºC to -80ºC and use within 3 months to prevent loss of potency. Aliquot to avoid multiple freeze/thaw cycles if storing reconstituted material at -20ºC to -80ºC.
|Purity||A greater than or equal to 95% purity was determined by SDS-PAGE.|
|Endotoxin||Endotoxin levels are less than or equal to 1 EU / 1 μg hFLT3L.|
|Activity||The bioactivity of recombinant hFLT3L was determined in an OCI-AML5 cell proliferation assay. The ED50 of each lot is less than or equal to 10 ng/ml.|
Recombinant human FLT3L was expressed in E. coli and is supplied in a lyophilized form.
FLT3L is produced by T cells and stromal fibroblasts (1,2). FLT3L targets many cell types, including hematopoietic stem cells, B cells, T cells, dendritic cells, and NK cells (1,2). FLT3L, in combination with other factors, stimulates differentiation and proliferation of hematopoietic multipotent progenitors and promotes proliferation of NK cells and dendritic cell subsets. There are two splice variants of FLT3L. Both the integral membrane and soluble splice variants are biologically active (1). Binding of FLT3L to its cognate tyrosine kinase receptor, FLT3, activates STAT3 and STAT5 (1,3). FLT3L is being tested for its ability to stimulate anti-tumor immune response via stimulation of dendritic and NK cells.
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