Gene ‘switch’ reverses cancer in common childhood leukaemia model
wehi.edu.au
wehi.edu.au
In this case they used mice that suffer from leukaemia as the initial model, then moved to working in cultured human cells.
The actual paper: http://genesdev.cshlp.org/content/28/12/1337.abstract
Computer simulations _do_ help in guiding the research by showing gaps in the theoretical understanding and identifying candidate proteins/genes for further experimental investigation, but no researcher in their right mind would take some finding from a current cell-biological computer simulation and publically declare "We've identified the cause for cancer X".