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

Effects of bombesin and insulin on inositol (1,4,5)trisphosphate and inositol (1,3,4)trisphosphate formation in Swiss 3T3 cells.

The effects of bombesin and insulin, separately and in combination, have been studied in Swiss mouse 3T3 cells. Bombesin caused a rapid transfer of 3H from the lipid inositol pool of prelabeled cells into inositol phosphates. Label in inositol tetrakisphosphate (InsP4) and in Ins1,4,5P3 and Ins1,3,4P3 rose within 10 sec of stimulation and that in Ins1,4P2, another InsP2 and InsP1, more slowly. Insulin, which had little effect on its own, increased the turnover of inositol lipids due to acute bombesin stimulation and also enhanced the DNA synthesis evoked by prolonged bombesin treatment. The results suggest that bombesin acting as a growth factor, uses inositol lipids as part of its transduction mechanism and that insulin acts synergistically to enhance both inositol phosphate formation and DNA synthesis.[1]


  1. Effects of bombesin and insulin on inositol (1,4,5)trisphosphate and inositol (1,3,4)trisphosphate formation in Swiss 3T3 cells. Heslop, J.P., Blakeley, D.M., Brown, K.D., Irvine, R.F., Berridge, M.J. Cell (1986) [Pubmed]
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