Table 2.

Genes Induced by Hypoxia

Co2+ DFO HIF-1
Erythropoietin  Yes Yes  
VEGF  Yes  Yes  
PDGF-B  Yes  ND  
TGF-β1 Yes  ND  
PLGF  Yes  ND  
Glucose transporter 1 (Glut-1)  Yes  Yes  
Glucose transporter 2 (Glut-2)  Yes ND  
Glucose transporter 3 (Glut-3)  Yes  ND 
Phosphofructokinase L (PFK-L)  Yes  Yes 
Phosphofructokinase C (PFK-C)  Yes  ND  
Aldolase A (ALD-A) Yes  Yes  
Aldolase C (ALD-C)  Yes  ND 
Triosephosphate isomerase (TPI)  ND  ND 
Glyceraldehyde-3-phosphate dehydrogenase (GAPDH)  Yes  ND 
Phosphoglycerate kinase 1 (PGK-1)  Yes  Yes  
Enolase-1 Yes  Yes  
Pyruvate kinase M  Yes  ND  
Lactate dehydrogenase A (LDH-A)  Yes  Yes  
Phosphoenolpyruvate carboxykinase (PEPCK)  Yes  ND  
Mitochondrially encoded genes No  No  
Tyrosine hydroxylase  Yes  Yes  
Endothelin 1 Yes  ND  
Heme oxygenase  Yes  Yes  
Nitric oxide synthase  Yes  Yes  
Transferrin  Yes  Yes 
Retrotransposon VL30  Yes  Yes  
Tissue factor  Yes Yes  
Adenylate kinase 3  Yes  Yes  
c-fos  Yes  ND 
c-jun  Yes  ND  
p35srj  Yes  Yes 
Co2+ DFO HIF-1
Erythropoietin  Yes Yes  
VEGF  Yes  Yes  
PDGF-B  Yes  ND  
TGF-β1 Yes  ND  
PLGF  Yes  ND  
Glucose transporter 1 (Glut-1)  Yes  Yes  
Glucose transporter 2 (Glut-2)  Yes ND  
Glucose transporter 3 (Glut-3)  Yes  ND 
Phosphofructokinase L (PFK-L)  Yes  Yes 
Phosphofructokinase C (PFK-C)  Yes  ND  
Aldolase A (ALD-A) Yes  Yes  
Aldolase C (ALD-C)  Yes  ND 
Triosephosphate isomerase (TPI)  ND  ND 
Glyceraldehyde-3-phosphate dehydrogenase (GAPDH)  Yes  ND 
Phosphoglycerate kinase 1 (PGK-1)  Yes  Yes  
Enolase-1 Yes  Yes  
Pyruvate kinase M  Yes  ND  
Lactate dehydrogenase A (LDH-A)  Yes  Yes  
Phosphoenolpyruvate carboxykinase (PEPCK)  Yes  ND  
Mitochondrially encoded genes No  No  
Tyrosine hydroxylase  Yes  Yes  
Endothelin 1 Yes  ND  
Heme oxygenase  Yes  Yes  
Nitric oxide synthase  Yes  Yes  
Transferrin  Yes  Yes 
Retrotransposon VL30  Yes  Yes  
Tissue factor  Yes Yes  
Adenylate kinase 3  Yes  Yes  
c-fos  Yes  ND 
c-jun  Yes  ND  
p35srj  Yes  Yes 

The first set of genes encode growth factors, the second set of genes encode enzymes or transporters involved in glucose metabolism, and the third set of genes encode proteins with a wide range of functions. The middle column indicates whether the gene has been shown to be induced by cobalt and/or DFO, thereby implicating the same or a similar mechanism of oxygen sensing. The column on the right indicates whether HIF-1 involvement has been demonstrated either by identification of a functional HIF-1 site or by the lack of hypoxic induction in ARNT deficient cells. Expression of the PLGF and Glut-2 genes is decreased by hypoxia. Induction of the PEPCK gene by glucagon is blocked by hypoxia.

Abbreviation: ND, not determined.

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