Journal: Advanced biosystems
Article Title: In Vitro Platform for Studying Human Insulin Release Dynamics of Single Pancreatic Islet Microtissues at High Resolution
doi: 10.1002/adbi.201900291
Figure Lengend Snippet: a) Stages of islet microtissue production displayed through immunofluorescence staining for insulin (β-cells, green), glucagon (α-cells, red), and somatostatin (δ-cells, blue). Images show (1) native islets in the human pancreas, (2) dissociated islets, and (3) islet microtissues. Scale bar: 100 μm. b) Endocrine-cell compositions of the islet microtissues were calculated from morphometric analysis of the microtissue sections from four individual donors. c) Cross-sectional diameter, d) total ATP content, e) total insulin content, and f) GSIS of human islet microtissues were assessed on days 7, 14, 21, and 28 post production. g) Glucose-stimulated insulin secretion of islet microtissues from 15 different donors 7 d post production is shown. ATP content, insulin content, and secreted insulin were normalized to the islet size in islet equivalents (IEQs), which refer to an islet with 150 μm diameter. Data in panels (c), (d), and (f) have been obtained from islets of seven individual donors, while panel (e) includes data of islets from four individual donors, mean ± standard deviations.
Article Snippet: Reaggregated Human Islets InSphero 3D InSight human islet microtissues were produced by hanging-drop-based scaffold-free reaggregation of dispersed primary human islets obtained through Prodo Laboratories Inc. Irvine, CA.
Techniques: Immunofluorescence, Staining