On the other hand, HIF-1 DNA binding activity was increased as well as the expression of several genes known to be regulated by this factor.
Laminin overlay indicated laminin binding activity was increased by LARGE overexpression in wildtype cultures.
TonEBP/NFAT5 expression and binding activity was increased in cells exposed to high glucose and mannitol (Fig. 4a d), and siRNA against TonEBP/NFAT5 24 h prevented the hypertonic induction of TonEBP/NFAT5 (Fig. 4a) and COX-2 proteins (Fig. 5a), indicating that TonEBP/NFAT5 expression and activity are required for the hyperosmolarity induction of COX-2.
Indeed, ETS-DNA binding activity is increased in patients with type 2 diabetes compared to healthy volunteers (Figure 3).
In addition, electrophoretic mobility shift assay (EMSA) results indicate that MEF-2 DNA binding activity is increased in nuclear extracts following PE stress, an effect that is also blocked by pretreatment with the Erk inhibitor (Fig. 4D).
The same technology enabled us to show that the reactivity of 4B7 mAb to NPM-CL complexes was markedly enhanced in comparison with its reactivity to either NPM or CL alone, suggesting that 4B7 is representative of mAbs exhibiting a dual specificity similar to that previously reported for certain anti-histone murine mAbs, whose binding activity is increased by DNA [ 22, 26].
Although Ets-1 DNA binding activity is increased in scleroderma fibroblasts [ 15], the Ets family member Fli-1 has reduced expression in this cell type [ 16]; however, the consequences of altering the Ets-1/Fli-1 ration on mesenchymal biology has yet to be fully appreciated.
To determine if DNA-binding activity was increased in Tg mice, we analyzed nuclear extracts obtained from WT and Tg lungs before [lanes 2 (WT) and 3 (Tg) in Fig. 5B] and 3-d post infection [lanes 4 (WT), 5 (Tg) in Fig. 5B] using an EMSA without added reductant.
Paired box protein 8 (Pand) and IKZF1 were overrepresented in the down-regulated genes after MI, while their DNA-binding activity was increased in remodeled myocardium, which could be explained if these TFs were repressors of gene expression.
However, the unaltered protein level of PPARδ does not exclude that its DNA-binding activity was increased because it is known that PGC-1α and PGC-1β, whose genes expression was clearly increased, act as coactivators of PPARδ and enhance the transactivation activity of PPARδ [ 28].
NF-κB p65 binding activities are increased in the atelectatic lungs of the ULV group compared with the BLV group (2.01 ± 0.30 vs. 1.00 ± 0.09, p = 0.0070) (Fig. 4a).
