The disclosure of the present application provides compositions and methods of treatment with stem cells. In at least one embodiment of a method for treating a patient with an insulin-related disorder, the method comprises the step of administering a cell-based composition to a patient with an insulin-related disorder to treat the insulin-related disorder, the cell-based composition comprising at least one mammalian stem cell and optionally at least one islet cell, the at least one mammalian stem cell capable of prolonging an effective life of the at least one islet cell.