Table 1.

Conditions for proliferation of human cord blood–derived erythroblasts in serum-free StemSpan medium


Factor

Concentration
Optimal long-term proliferation  
    Erythropoietin   2 U/mL  
    Dex (synthetic glucocorticoid)   1 μM  
    IGF-1   40 ng/mL  
    SCF   100 ng/mL  
    Cholesterol-rich lipid mix   40 μg/mL  
    Dihydrotestosterone*  1 μM  
Factors without any effect  
    Interleukin-3   1 ng/mL  
    TGF-β   5 ng/mL  
    Heparin-binding EGF   20 ng/mL  
    Testosterone  1 μM  
    Progesterone   1 μM  
    Estrogen   1 μM  
    Cpa (androgen antagonist)   1 μM  
    Fibronectin-coated plates   20 ng/mL  
    LY (PI-3-K inhibitor)
 
1 μM
 

Factor

Concentration
Optimal long-term proliferation  
    Erythropoietin   2 U/mL  
    Dex (synthetic glucocorticoid)   1 μM  
    IGF-1   40 ng/mL  
    SCF   100 ng/mL  
    Cholesterol-rich lipid mix   40 μg/mL  
    Dihydrotestosterone*  1 μM  
Factors without any effect  
    Interleukin-3   1 ng/mL  
    TGF-β   5 ng/mL  
    Heparin-binding EGF   20 ng/mL  
    Testosterone  1 μM  
    Progesterone   1 μM  
    Estrogen   1 μM  
    Cpa (androgen antagonist)   1 μM  
    Fibronectin-coated plates   20 ng/mL  
    LY (PI-3-K inhibitor)
 
1 μM
 

EGF indicates epidermal growth factor; PI-3-K, phosphoinositol 3-kinase.

*

Female erythroblasts only.

Male erythroblasts only.

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