Growth factors oncogenes and

Sattler, M., Salgja, R., Shrikhande, G., Verma, S., Choi, J.L., Rohrschneider, L.R., and Griffin, J.D., 1997, The phosphatidyhnositol polyphosphate 5-phosphatase SHIP and the protein tyrosine phosphatase SHP-2 form a complex in hematopoietic cells which can be regulated by BCR/ABL and growth factors. Oncogene, 15 2379-2384. 

Deoxycholic acid has also been demonstrated to activate other pivotal oncogenic pathways in CRC cells in vitro including p-catenin/T-cell factor-mediated transcription, extra-cellular signal-regulated kinase activation downstream of the epidermal growth factor receptor and Jun-N-terminal kinase... 

In comparison to the level of cellular serine or threonine phosphorylation, protein tyrosine phosphorylation occurs at quite low levels in normal cells but dramatically increases upon oncogenic transformation or stimulation. Since the first discovery in 1978 that the transforming protein from Rous sarcoma virus (pp60vsrc) exhibited intrinsic kinase activity/5 protein kinase activity has also been shown to be inherent to other growth factor receptors such as epidermal growth factor receptor and the insulin receptor,[6 91 and to involve autophosphorylation processes. The diverse biochemical activity exhibited by protein tyrosine phosphorylation has stimulated the development of chemical methods for the preparation of phosphorylated peptides for use as substrates in elucidating the biochemical and physiological activity of phosphorylated site(s). 

Downward, J., Yarden, Y, Mayes, E., Scrace, G., Totty, N., Stockwell, P., Ullrich, A., Schlessinger, J., and Waterfield, M. D. (1984). Close similarity of epidermal growth factor receptor and v-erb-B oncogene protein sequences. Nature 307, 521-527. 

Albini, A., Benelli, R., Presta, M., Rusnati, M., Ziche, M., Rubartelli, A., Paglialunga, G., Bussolino, F. and Noonan, D. (1996). HIV-tat protein is a heparin-binding angiogenic growth factor. Oncogene 12, 289-297. 

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