If a fully functional lab grown pancreas can exist, can it be used as a cure for type 2 diabetes?
Since the consensus is that the underlying initial problem in t2dm is the development of insulin insensitivity in the presence of a normally functioning pancreas, then replacing that pancreas at a more advanced stage of the disease will not cause normalisation of glucose levels. 

http://journal.diabetes.org/clinicaldiabetes/v18n22000/pg80.htm