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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Transcriptional repression of cyclin-dependent kinase inhibitor p21 gene by phospholipase D1 and D2.

Phospholipase D (PLD) is known to stimulate cell cycle progression and to transform murine fibroblast cells into tumorigenic forms, although the precise mechanisms are not elucidated. In this report, we demonstrated that both PLD1 and PLD2 repressed expression of cyclin-dependent kinase inhibitor p21 gene in an additive manner. The phospholipase activity of PLDs was important for the effect. PLD1 repressed the p21 promoter by decreasing the level of p53, whereas PLD2 via a p53-independent pathway through modulating Sp1 activity. Taken together, we suggest that PLD isozymes stimulate cell growth by repressing expression of p21 gene, which may ultimately lead to carcinogenesis.[1]

References

  1. Transcriptional repression of cyclin-dependent kinase inhibitor p21 gene by phospholipase D1 and D2. Kwun, H.J., Lee, J.H., Min, d.o. .S., Jang, K.L. FEBS Lett. (2003) [Pubmed]
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