Figure 5. Prolonged functionality of encapsulated islets in vivo.
Pancreatic islets from DBA/2 mice were grafted under the kidney capsule of C57BL/6 recipients: the islets were either untreated (Ctrl); or encapsulated in PEG alone (PEG alone); or with PEG decorated with empty nanoparticles (PEG+Empty Nano); or with PEG decorated with LIF-containing nanoparticles (PEG+LIF-Nano). The ability of these grafts to support normoglycemia over 100 d is shown as “% survival” in (A). Histology of grafts taken from recipients showing normoglycemia at 100 d revealed well-preserved β cells containing insulin, as illustrated in (B).