Recombinant human granulocyte macrophage colony-stimulating factor (rhGM-CSF) induces human macrophage production of transforming growth factor-alpha.
Granulocyte-Macrophage Colony Stimulating Factor (GM-CSF) is known as an inducer of proliferation and functional activation of myeloid cells. This study was carried out to characterize the effect of purified recombinant human GM-CSF (rhGM-CSF) on induction of TGF-alpha in macrophages. Using Northern blot analysis and immunoassays, we show here that rhGM-CSF markedly stimulates production of TGF-alpha messenger RNA and protein in normal tonsil macrophages. The findings are consistent with macrophages being a normal inducible source of TGF-alpha which may be an important mediator of various activities of GM-CSF both in hematopoietic and non-hematopoietic cells.
Department of Biochemistry, Nanjing University, Peoples Republic of China.
J Q
JQ
Zhu
J
J
Wu
D X
DX
Zhu
A
A
Scharfman
G
G
Lamblin
K K
KK
Han
D000818:Animals; D015152:Blotting, Northern; D002478:Cells, Cultured; D003114:Colony-Forming Units Assay; D004305:Dose-Response Relationship, Drug; D004797:Enzyme-Linked Immunosorbent Assay; D016178:Granulocyte-Macrophage Colony-Stimulating Factor / Q000494:pharmacology*; D006801:Humans; D007700:Kinetics; D008264:Macrophages / Q000378:metabolism*; D051381:Rats; D011994:Recombinant Proteins / Q000494:pharmacology; D016211:Transforming Growth Factor alpha / Q000096:biosynthesis*
D011994:Recombinant Proteins; D016211:Transforming Growth Factor alpha; D016178:Granulocyte-Macrophage Colony-Stimulating Factor