Fms-related tyrosine kinase 3 ligand (Flt3-Ligand) is a growth factor that exerts pleiotropic and potent effects on the development of hematopoietic stem cells (HSCs) and the immune system. In synergy with other growth factors Flt3-Ligand promotes proliferation and development of HSCs, myeloid and lymphoid progenitor cells, dendritic cells, and natural killer cells.
MACS GMP Recombinant Human Flt3-Ligand is designed for
ex vivo
cell culture processing. No animal- or human-derived materials were used for the manufacture of this product, unless otherwise stated in the respective Certificate of Origin. The product is lyophilized without carrier protein or preservatives.
Disclaimer
MACS GMP Products are for research use and
ex vivo
cell culture processing only, and are not intended for human
in vivo
applications. For regulatory status in the USA, please contact your local representative.
Background information
Flt3-Ligand belongs to a small family of α-helical cytokines and is expressed by T lymphocytes and bone marrow stromal fibroblasts as a membrane-bound and a soluble isoform. Both isoforms signal through the tyrosine kinase receptor Flt3/Flk-2, which is restricted to cells of hematopoietic origin.
Applications
MACS GMP Recombinant Human Flt3-Ligand can be used for a variety of applications, including the expansion
2,3
and the viral transduction
4,5
of hematopoietic stem and progenitor cells derived from bone marrow, peripheral blood cells, and cord blood.
Quality statement
MACS GMP Products are manufactured and tested under a quality management system (ISO 13485) and are in compliance with relevant GMP guidelines. They are designed following the recommendations of USP <1043> on ancillary materials.
Biological activity
The specific activity is determined by proliferation assay according to Meyer and Drexler
1
using OCI-AML5 cells. The proliferation assay was calibrated with the reference standard for human Flt3-Ligand (NIBSC 96/532) provided by the National Institute for Biological Standards and Control.
) human hematopoietic cells: novel responses to Flt3-ligand and thrombopoietin.
J. Exp. Med. 183(6): 2551-2558
Kiem, H. P. et al. (1998) Improved gene transfer into baboon marrow repopulating cells using recombinant human fibronectin fragment CH-296 in combination with interleukin-6, stem cell factor, FLT-3 ligand, and megakaryocyte growth and development factor. Blood 92(6): 1878-1886
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