Figure 1.

Increased expression of apoptosis signal-regulating kinase 1 (ASK1) in human adipose-derived stem cells (hASCs) exposed to hypoxic conditions. hASCs were exposed to hypoxic conditions (1% ≥ O₂, 5% CO₂, 37 °C) for up to 24 h. (A) Viability of hypoxic hASCs was measured by cell counting kit-8 reagent (CCK-8) assay (^# p < 0.05 vs. 0 h); (B) ASK1 mRNA and protein expression were measured by reverse transcription polymerase chain (RT-PCR) and immunoblot, respectively.