Figure 4.
Corticotropin-releasing hormone (CRH) increases CREB binding activity in HaCaT cells. HaCaT cells were stimulated with 100 nM CRH in serum free Dulbecco’s modified Eagles’s medium (DMEM) for 0 (control), 15, 30 and 60 minutes. Nuclear extracts were subjected to electrophoretic mobility shift assay analysis using a 32P-labelled CREB oligonucleotide probe (5′-AGA GAT TGC CTG ACG TCA GAG AGC TAG -3′) as described (42, 53). Cold represents nuclear extract pre-incubated with 50X excess of cold oligonucleotide.