Title : Polyamines regulate the stability of JunD mRNA by modulating the competitive binding of its 3' untranslated region to HuR and AUF1.

Pub. Date : 2010 Nov

PMID : 20805360






5 Functional Relationships(s)
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Compound Name
Protein Name
Organism
1 Polyamines regulate the stability of JunD mRNA by modulating the competitive binding of its 3" untranslated region to HuR and AUF1. Polyamines ELAV like RNA binding protein 1 Homo sapiens
2 The depletion of cellular polyamines enhanced HuR binding to JunD mRNA and decreased the levels of JunD transcript associated with AUF1, thus stabilizing JunD mRNA. Polyamines ELAV like RNA binding protein 1 Homo sapiens
3 The silencing of HuR increased AUF1 binding to the JunD mRNA, decreased the abundance of HuR-JunD mRNA complexes, rendered the JunD mRNA unstable, and prevented increases in JunD mRNA and protein in polyamine-deficient cells. Polyamines ELAV like RNA binding protein 1 Homo sapiens
4 Conversely, increasing the cellular polyamines repressed JunD mRNA interaction with HuR and enhanced its association with AUF1, resulting in an inhibition of JunD expression. Polyamines ELAV like RNA binding protein 1 Homo sapiens
5 These results indicate that polyamines modulate the stability of JunD mRNA in intestinal epithelial cells through HuR and AUF1 and provide new insight into the molecular functions of cellular polyamines. Polyamines ELAV like RNA binding protein 1 Homo sapiens