Open Access
p53 as the main traffic controller of the cell signaling network
Sinto Sebastian1,Amalia Azzariti1,Nicola Silvestris1,Letizia Porcelli1,Antonio Russo1,Angelo Paradiso1
Clinical Experimental Oncology Laboratory, National Cancer Institute Giovanni Paolo II, Via Hahnemann, 10 - 70126 Bari, Italy
DOI: 10.2741/3669 Volume 15 Issue 3, pp.1172-1190
Published: 01 June 2010

Among different pathological conditions that affect human beings, cancer has received a great deal of attention primarily because it leads to significant morbidity and mortality. This is essentially due to increasing world-wide incidence of this disease and the inability to discover the cause and molecular mechanisms by which normal human cells acquire the characteristics that define cancer cells. Since the discovery of p53 over a quarter of a century ago, it is now recognized that virtually all cell fate pathways of live cells and the decision to die are under the control of p53. Such extensive involvement indicates that p53 protein is acting as a major traffic controller in the cell signaling network. In cancer cells, many cell signaling pathways of normal human cells are rerouted towards immortalization and this is accomplished by the corruption of the main controllers of cell signaling pathways such as p53. This review highlights how p53 signaling activity is altered in cancer cells so that cells acquire the hallmarks of cancer including deregulated infinite self replicative potential.

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Sinto Sebastian, Amalia Azzariti, Nicola Silvestris, Letizia Porcelli, Antonio Russo, Angelo Paradiso. p53 as the main traffic controller of the cell signaling network. Frontiers in Bioscience-Landmark. 2010. 15(3); 1172-1190.