Title : Snail associates with EGR-1 and SP-1 to upregulate transcriptional activation of p15INK4b.

Pub. Date : 2010 Mar

PMID : 20121949






19 Functional Relationships(s)
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1 This study investigated the detailed mechanisms by which Snail upregulates gene expression of the CDK inhibitor p15(INK4b) in HepG2 induced by the tumor promoter tetradecanoyl phorbol acetate (TPA). Tetradecanoylphorbol Acetate snail family transcriptional repressor 1 Homo sapiens
2 This study investigated the detailed mechanisms by which Snail upregulates gene expression of the CDK inhibitor p15(INK4b) in HepG2 induced by the tumor promoter tetradecanoyl phorbol acetate (TPA). Tetradecanoylphorbol Acetate snail family transcriptional repressor 1 Homo sapiens
3 Gene expression of EGR-1, Snail and SP-1 can be induced by TPA within 0.5-6 h. In addition, basal levels of SP-1, but not of the other two transcriptional factors, were observed. Tetradecanoylphorbol Acetate snail family transcriptional repressor 1 Homo sapiens
4 Blockade of TPA-induced gene expression of Snail, EGR-1 or SP-1 suppressed activation of the p15-pro228 reporter plasmid harboring the TPA-responsive element. Tetradecanoylphorbol Acetate snail family transcriptional repressor 1 Homo sapiens
5 Blockade of TPA-induced gene expression of Snail, EGR-1 or SP-1 suppressed activation of the p15-pro228 reporter plasmid harboring the TPA-responsive element. Tetradecanoylphorbol Acetate snail family transcriptional repressor 1 Homo sapiens
6 In an EMSA, a DNA-protein complex was elevated by TPA, which can be blocked by antibodies against EGR-1, SP-1 or Snail at 6 h. Immunoprecipitation/western blotting demonstrated that TPA could trigger the association of EGR-1 with Snail or SP-1. Tetradecanoylphorbol Acetate snail family transcriptional repressor 1 Homo sapiens
7 In an EMSA, a DNA-protein complex was elevated by TPA, which can be blocked by antibodies against EGR-1, SP-1 or Snail at 6 h. Immunoprecipitation/western blotting demonstrated that TPA could trigger the association of EGR-1 with Snail or SP-1. Tetradecanoylphorbol Acetate snail family transcriptional repressor 1 Homo sapiens
8 In an EMSA, a DNA-protein complex was elevated by TPA, which can be blocked by antibodies against EGR-1, SP-1 or Snail at 6 h. Immunoprecipitation/western blotting demonstrated that TPA could trigger the association of EGR-1 with Snail or SP-1. Tetradecanoylphorbol Acetate snail family transcriptional repressor 1 Homo sapiens
9 In an EMSA, a DNA-protein complex was elevated by TPA, which can be blocked by antibodies against EGR-1, SP-1 or Snail at 6 h. Immunoprecipitation/western blotting demonstrated that TPA could trigger the association of EGR-1 with Snail or SP-1. Tetradecanoylphorbol Acetate snail family transcriptional repressor 1 Homo sapiens
10 Furthermore, a double chromatin immunoprecipitation assay verified that EGR-1 could form a complex with Snail or SP-1 on the TPA-responsive element after treatment with TPA for 2-6 h. Finally, we demonstrated a novel Snail-target region which could be bound by Snail and was also required for TPA-induced p15-pro228 activation. Tetradecanoylphorbol Acetate snail family transcriptional repressor 1 Homo sapiens
11 Furthermore, a double chromatin immunoprecipitation assay verified that EGR-1 could form a complex with Snail or SP-1 on the TPA-responsive element after treatment with TPA for 2-6 h. Finally, we demonstrated a novel Snail-target region which could be bound by Snail and was also required for TPA-induced p15-pro228 activation. Tetradecanoylphorbol Acetate snail family transcriptional repressor 1 Homo sapiens
12 Furthermore, a double chromatin immunoprecipitation assay verified that EGR-1 could form a complex with Snail or SP-1 on the TPA-responsive element after treatment with TPA for 2-6 h. Finally, we demonstrated a novel Snail-target region which could be bound by Snail and was also required for TPA-induced p15-pro228 activation. Tetradecanoylphorbol Acetate snail family transcriptional repressor 1 Homo sapiens
13 Furthermore, a double chromatin immunoprecipitation assay verified that EGR-1 could form a complex with Snail or SP-1 on the TPA-responsive element after treatment with TPA for 2-6 h. Finally, we demonstrated a novel Snail-target region which could be bound by Snail and was also required for TPA-induced p15-pro228 activation. Tetradecanoylphorbol Acetate snail family transcriptional repressor 1 Homo sapiens
14 Furthermore, a double chromatin immunoprecipitation assay verified that EGR-1 could form a complex with Snail or SP-1 on the TPA-responsive element after treatment with TPA for 2-6 h. Finally, we demonstrated a novel Snail-target region which could be bound by Snail and was also required for TPA-induced p15-pro228 activation. Tetradecanoylphorbol Acetate snail family transcriptional repressor 1 Homo sapiens
15 Furthermore, a double chromatin immunoprecipitation assay verified that EGR-1 could form a complex with Snail or SP-1 on the TPA-responsive element after treatment with TPA for 2-6 h. Finally, we demonstrated a novel Snail-target region which could be bound by Snail and was also required for TPA-induced p15-pro228 activation. Tetradecanoylphorbol Acetate snail family transcriptional repressor 1 Homo sapiens
16 Furthermore, a double chromatin immunoprecipitation assay verified that EGR-1 could form a complex with Snail or SP-1 on the TPA-responsive element after treatment with TPA for 2-6 h. Finally, we demonstrated a novel Snail-target region which could be bound by Snail and was also required for TPA-induced p15-pro228 activation. Tetradecanoylphorbol Acetate snail family transcriptional repressor 1 Homo sapiens
17 Furthermore, a double chromatin immunoprecipitation assay verified that EGR-1 could form a complex with Snail or SP-1 on the TPA-responsive element after treatment with TPA for 2-6 h. Finally, we demonstrated a novel Snail-target region which could be bound by Snail and was also required for TPA-induced p15-pro228 activation. Tetradecanoylphorbol Acetate snail family transcriptional repressor 1 Homo sapiens
18 Furthermore, a double chromatin immunoprecipitation assay verified that EGR-1 could form a complex with Snail or SP-1 on the TPA-responsive element after treatment with TPA for 2-6 h. Finally, we demonstrated a novel Snail-target region which could be bound by Snail and was also required for TPA-induced p15-pro228 activation. Tetradecanoylphorbol Acetate snail family transcriptional repressor 1 Homo sapiens
19 In conclusion, Snail associates with EGR-1 and SP-1 to mediate TPA-induced transcriptional upregulation of p15(INK4b) in HepG2. Tetradecanoylphorbol Acetate snail family transcriptional repressor 1 Homo sapiens