(A) Northern blot analysis of RNA
isolated from wild-type Hep3B cells during hypoxia (1.5%
O2/5% CO2/93.5% N2) or
normoxic CoCl2 in the presence of DPI (3 μM), myxothiazol
(100 ng/ml), rotenone (3 μg/ml), ebselen (25 μM), or PDTC (100
μM) for 16 hr. (B) HIF-1 DNA binding in nuclear extracts
from wild-type cells during hypoxia (1.5% O2/5%
CO2/93.5% N2) or normoxic CoCl2
in the presence of DPI (3 μM), myxothiazol (100 ng/ml), rotenone (3
μg/ml), ebselen (25 μM), or PDTC (100 μM) for 4 hr.
(C) Northern analysis of RNA from ρ0-Hep3B
cells during CoCl2 (100 μM) in the presence of ebselen
(25 μM) or PDTC (100 μM) for 16 hr. (D) HIF-1 DNA
binding in nuclear extracts from wild-type or ρ0 cells
during CoCl2 in the presence of ebselen (25 μM) or PDTC
(100 μM) for 4 hr. C, constitutive; NS, nonspecific.