FGF-basic is a critical component for maintaining embryonic stem cells in culture in an undifferentiated state. Gibco™ Recombinant Human FGF-Basic is a bioactive protein intended for use in cell culture applications. Gibco FGF-Basic comes in two forms: 1) FGF-basic (AA 1-155), full-length version, and 2) FGF-basic (AA 10-155), truncated version.

Superior bioactivity over the competition

BALB/3T3 cells (mouse fibroblast cell line, ATCC: CCL-163) at constant density were co-cultured with serial dilutions of FGF-basic in serum-free medium at 37oC, 5% CO2 for 18–24 hours. The optical density (OD) of each concentration of the testing samples, which is directly proportional to the cell number, was read at 490/650 nm at the endpoint of incubation. The cell proliferation dose curve was plotted with mean OD vs. FGF-basic concentrations (ng/mL).

Figure 1. ED50 of recombinant human FGF-basic (AA 1-155) Gibco (blue): 0.02 ng/mL; competitor (red): 0.16 ng/mL. 

Figure 2. ED50 of recombinant human FGF-basic (AA 10-155) Gibco (blue): 0.37 ng/mL; competitor (red): 1.48 ng/mL. 

References

  1. Eiselleova, L et al.  (2009) A Complex Role for FGF-2 in Self-Renewal, Survival, and Adhesion of Human Embryonic Stem Cells.  Stem Cells 27(8): 1847–1857
  2. Karumbayaram S et al. (2009) Human embryonic stem cell-derived motor neurons expressing SOD1 mutants exhibit typical signs of motor neuron degeneration linked to ALS. Dis Model Mech 189–195.
  3. Zhou J et al. (2009) mTOR supports long-term self-renewal and suppresses mesoderm and endoderm activities of human embryonic stem cells. Proc Natl Acad Sci USA 106:7840–7845.
  4. Lu S et al. (2008) Biologic properties and enucleation of red blood cells from human embryonic stem cells. Blood 112:4475–4484.