Title : Polyamine depletion is associated with an increase in JunD/AP-1 activity in small intestinal crypt cells.

Pub. Date : 1999 Feb

PMID : 9950818






6 Functional Relationships(s)
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1 Polyamine depletion is associated with an increase in JunD/AP-1 activity in small intestinal crypt cells. Polyamines JunD proto-oncogene, AP-1 transcription factor subunit Rattus norvegicus
2 The increased AP-1 complexes in polyamine-deficient cells were dramatically supershifted by the anti-JunD antibody but not by antibodies against c-Jun, JunB, or Fos proteins. Polyamines JunD proto-oncogene, AP-1 transcription factor subunit Rattus norvegicus
3 There were significant increases in JunD mRNA and protein in DFMO-treated cells, although expression of the c-fos, c-jun, and junB genes decreased. Eflornithine JunD proto-oncogene, AP-1 transcription factor subunit Rattus norvegicus
4 The increase in JunD/AP-1 activity in DFMO-treated cells was associated with a significant decrease in cell division. Eflornithine JunD proto-oncogene, AP-1 transcription factor subunit Rattus norvegicus
5 These results indicate that 1) polyamine depletion is associated with an increase in AP-1 binding activity and 2) the increase in AP-1 activity in the DFMO-treated cells was primarily contributed by an increase in the JunD/AP-1. Polyamines JunD proto-oncogene, AP-1 transcription factor subunit Rattus norvegicus
6 These results indicate that 1) polyamine depletion is associated with an increase in AP-1 binding activity and 2) the increase in AP-1 activity in the DFMO-treated cells was primarily contributed by an increase in the JunD/AP-1. Eflornithine JunD proto-oncogene, AP-1 transcription factor subunit Rattus norvegicus