We previously demonstrated a role for p-CREB1 and p-ATF-2 inGγ-globin induction by NaB and TSA through p38 MAPK signaling andG-CRE transactivation [5]. To expand on these findings in the currentstudy we demonstrated that cJun binds the G-CRE region in vivo atsteady state. Furthermore, EMSA and promoter pull-down studiesconfirm co-localization of cJun, CREB1 and ATF-2 on the G-CRE. Ourfindings in erythroid cells are in agreement with published work inthe trophoblast α-subunit [7] and corticotrophin releasing hormonegenes [40] where the CRE binds CREB, CREM, ATF-1, ATF-2, Fos andcJun. These data implicate the CRE as a target for gene regulation bymultiple signaling pathways including p38 MAPK [41], cAMP [42] andcJun N-terminal kinase
We previously demonstrated a role for p-CREB1 and p-ATF-2 inGγ-globin induction by NaB and TSA through p38 MAPK signaling andG-CRE transactivation [5]. To expand on these findings in the currentstudy we demonstrated that cJun binds the G-CRE region in vivo atsteady state. Furthermore, EMSA and promoter pull-down studiesconfirm co-localization of cJun, CREB1 and ATF-2 on the G-CRE. Ourfindings in erythroid cells are in agreement with published work inthe trophoblast α-subunit [7] and corticotrophin releasing hormonegenes [40] where the CRE binds CREB, CREM, ATF-1, ATF-2, Fos andcJun. These data implicate the CRE as a target for gene regulation bymultiple signaling pathways including p38 MAPK [41], cAMP [42] andcJun N-terminal kinase<br>
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