Title : Early activation of the Kaposi's sarcoma-associated herpesvirus RTA, RAP, and MTA promoters by the tetradecanoyl phorbol acetate-induced AP1 pathway.

Pub. Date : 2004 Apr

PMID : 15047839






10 Functional Relationships(s)
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1 Early activation of the Kaposi"s sarcoma-associated herpesvirus RTA, RAP, and MTA promoters by the tetradecanoyl phorbol acetate-induced AP1 pathway. Tetradecanoylphorbol Acetate Jun proto-oncogene, AP-1 transcription factor subunit Homo sapiens
2 Treatment with TPA proved to significantly induce both AP1 DNA-binding activity and levels of activated phosphorylated cJUN in PEL cells and ectopic expression of cJUN-plus-cFOS-induced RTA protein expression in PEL cells. Tetradecanoylphorbol Acetate Jun proto-oncogene, AP-1 transcription factor subunit Homo sapiens
3 Treatment with TPA proved to significantly induce both AP1 DNA-binding activity and levels of activated phosphorylated cJUN in PEL cells and ectopic expression of cJUN-plus-cFOS-induced RTA protein expression in PEL cells. Tetradecanoylphorbol Acetate Jun proto-oncogene, AP-1 transcription factor subunit Homo sapiens
4 Treatment with TPA proved to significantly induce both AP1 DNA-binding activity and levels of activated phosphorylated cJUN in PEL cells and ectopic expression of cJUN-plus-cFOS-induced RTA protein expression in PEL cells. Tetradecanoylphorbol Acetate Jun proto-oncogene, AP-1 transcription factor subunit Homo sapiens
5 Cotransfected cJUN plus cFOS or TPA treatment transactivated the KSHV RTA, RAP, and MTA promoters in an AP1-binding site-dependent manner in all three promoters. Tetradecanoylphorbol Acetate Jun proto-oncogene, AP-1 transcription factor subunit Homo sapiens
6 Chromatin immunoprecipitation assays confirmed that cJUN associates with these KSHV target promoters in PEL cells as early as 4 h after TPA treatment. Tetradecanoylphorbol Acetate Jun proto-oncogene, AP-1 transcription factor subunit Homo sapiens
7 Both increased phosphorylated cJUN and AP1 DNA-binding activity was detected as early as 1 h after TPA treatment in PEL cells, suggesting that AP1 activity may be crucial for very early activation of the RAP, MTA, and RTA promoters during the KSHV lytic cycle. Tetradecanoylphorbol Acetate Jun proto-oncogene, AP-1 transcription factor subunit Homo sapiens
8 Both increased phosphorylated cJUN and AP1 DNA-binding activity was detected as early as 1 h after TPA treatment in PEL cells, suggesting that AP1 activity may be crucial for very early activation of the RAP, MTA, and RTA promoters during the KSHV lytic cycle. Tetradecanoylphorbol Acetate Jun proto-oncogene, AP-1 transcription factor subunit Homo sapiens
9 Both increased phosphorylated cJUN and AP1 DNA-binding activity was detected as early as 1 h after TPA treatment in PEL cells, suggesting that AP1 activity may be crucial for very early activation of the RAP, MTA, and RTA promoters during the KSHV lytic cycle. Tetradecanoylphorbol Acetate Jun proto-oncogene, AP-1 transcription factor subunit Homo sapiens
10 Therefore, we suggest that the initiating effects of TPA via the AP1 pathway in PEL cells need to be amplified by RTA for full lytic-cycle induction. Tetradecanoylphorbol Acetate Jun proto-oncogene, AP-1 transcription factor subunit Homo sapiens