In cells depressed of either glucose or serum, HIF-1α expression was generally anti-apoptotic, while HIF-2α expression is observed to either support apoptosis or have less of an influence on apoptosis, depending on the cell line used.
In our experiments we observed a distinctive up-regulation of HIF1A experssion together with up-regulation of MAP1LC31 and BECN expression in PC3 cells after 30 days without changing medium and would expect similar behaviour of 2A isoform. (publication in press, cannot send link).