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CSHL Computational Cell Biology Islet Assessment. July 2012 Allan J. Ropski University of Illinois at Chicago Department of Surgery. Islets of Langerhans. Islet Potency Index FDA requirement for use as a biological drug Sterility, identity, and purity are established
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CSHL Computational Cell BiologyIslet Assessment July 2012 Allan J. Ropski University of Illinois at Chicago Department of Surgery
Islets of Langerhans • Islet Potency Index • FDA requirement for use as a biological drug • Sterility, identity, and purity are established • Reliably predict transplant outcomes • Glucose-stimulated insulin secretion; β-cell specific • In-vivo streptozotocin treated mice; Potency Index • UIC-MS islet assays • Phase III human clinical trials*; 52-week follow-up • Microfluidic optimization • Ca2+; Mitochondrial Potential; Insulin release • High-throughput assays
Human Islet Cell Composition • 6 isolations • 32 sampled islets • Ranges α-cells 28 – 75% β-cells 10 – 65% δ-cells 1 – 22% Assessment of Human Pancreatic Islet Architecture and Composition by Laser Scanning Confocal Microscopy Journal of Histochemistry & Cytochemistry; Volume 53(9): 1087–1097, 2005 Marcela Brissova, Michael J. Fowler, Wendell E. Nicholson, Anita Chu, Boaz Hirshberg, David M. Harlan, and Alvin C. Powers