Sp100 is important for the stimulatory effect of homeodomain-interacting protein kinase-2 on p53-dependent gene expression.
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Sp100 is important for the stimulatory effect of homeodomain-interacting protein kinase-2 on p53-dependent gene expression. / Möller, Andreas; Sirma, Hüseyin; Hofmann, Thomas G; Staege, Hannah; Gresko, Ekaterina; Schmid, Lüdi Katharina; Klimczak, Elisabeth; Dröge, Wulf; Will, Hans; Schmitz, M Lienhard.
in: ONCOGENE, Jahrgang 22, Nr. 54, 54, 2003, S. 8731-8737.Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung
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TY - JOUR
T1 - Sp100 is important for the stimulatory effect of homeodomain-interacting protein kinase-2 on p53-dependent gene expression.
AU - Möller, Andreas
AU - Sirma, Hüseyin
AU - Hofmann, Thomas G
AU - Staege, Hannah
AU - Gresko, Ekaterina
AU - Schmid, Lüdi Katharina
AU - Klimczak, Elisabeth
AU - Dröge, Wulf
AU - Will, Hans
AU - Schmitz, M Lienhard
PY - 2003
Y1 - 2003
N2 - HIPK2 shows overlapping localization with p53 in promyelocytic leukemia (PML) nuclear bodies (PML-NBs) and functionally interacts with p53 to increase gene expression. Here we demonstrate that HIPK2 and the PML-NB resident protein Sp100 synergize for the activation of p53-dependent gene expression. Sp100 and HIPK2 interact and partially colocalize in PML-NBs. The cooperation of HIPK2 and Sp100 for the induction of p21(Waf1) is completely dependent on the presence of p53 and the kinase function of HIPK2. Downregulation of Sp100 levels by expression of siRNA does not interfere with p53-mediated transcription, but obviates the enhancing effect of HIPK2. In summary, these experiments reveal a novel function for Sp100 as a coactivator for HIPK2-mediated p53 activation.
AB - HIPK2 shows overlapping localization with p53 in promyelocytic leukemia (PML) nuclear bodies (PML-NBs) and functionally interacts with p53 to increase gene expression. Here we demonstrate that HIPK2 and the PML-NB resident protein Sp100 synergize for the activation of p53-dependent gene expression. Sp100 and HIPK2 interact and partially colocalize in PML-NBs. The cooperation of HIPK2 and Sp100 for the induction of p21(Waf1) is completely dependent on the presence of p53 and the kinase function of HIPK2. Downregulation of Sp100 levels by expression of siRNA does not interfere with p53-mediated transcription, but obviates the enhancing effect of HIPK2. In summary, these experiments reveal a novel function for Sp100 as a coactivator for HIPK2-mediated p53 activation.
M3 - SCORING: Zeitschriftenaufsatz
VL - 22
SP - 8731
EP - 8737
JO - ONCOGENE
JF - ONCOGENE
SN - 0950-9232
IS - 54
M1 - 54
ER -