Fig. 4.
Therapy of REG3B–GLP-1 vector requires GLP-1 to maintain normoglycemia. (A) We generated an AAV9 vector expressing REG3B alone (AAV9 mRIP Reg3b). REG3B expression was verified by western blotting (left panel). Fasting blood glucose levels among mice administered PBS (control), AAV9 mRIP Reg3b–Glp-1 vector, and AAV9 mRIP Reg3b vector. AAV9 vector was administered 2 weeks prior to five consecutive STZ administrations (n=5/group), and the blood glucose levels were monitored. (B) The AAV9 mRIP Reg3b–Glp-1 vector was unable to reverse STZ-induced diabetes. Five low doses of STZ were administered prior to AAV9-mediated therapy (n=3/group). Error bars represent s.e.m.