I want to silence an oncogene (which is transfected) for a period of time and activate it. How can I do that? Could you suggest some papers for the above case,if any? This is a general case.
You would need to use a stringent, inducible gene expression system, placing your gene of interest under the control of the corresponding promoter for that system. One of the most commonly used in plants is the Dexamethasone inducible system: http://onlinelibrary.wiley.com/doi/10.1111/j.1365-313X.2005.02341.x/abstract