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Qadir, M.M.F.* ; Álvarez-Cubela, S.* ; Weitz, J.* ; Panzer, J.K.* ; Klein, D.* ; Moreno-Hernández, Y.* ; Cechin, S.* ; Tamayo, A.* ; Almaça, J.* ; Hiller, H.* ; Beery, M.* ; Kusmartseva, I.* ; Atkinson, M.* ; Speier, S. ; Ricordi, C.* ; Pugliese, A.* ; Caicedo, A.* ; Fraker, C.A.* ; Pastori, R.L.* ; Domínguez-Bendala, J.*

Long-term culture of human pancreatic slices as a model to study real-time islet regeneration.

Nat. Commun. 11:3265 (2020)

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The culture of live pancreatic tissue slices is a powerful tool for the interrogation of physiology and pathology in an in vitro setting that retains near-intact cytoarchitecture. However, current culture conditions for human pancreatic slices (HPSs) have only been tested for short-term applications, which are not permissive for the long-term, longitudinal study of pancreatic endocrine regeneration. Using a culture system designed to mimic the physiological oxygenation of the pancreas, we demonstrate high viability and preserved endocrine and exocrine function in HPS for at least 10 days after sectioning. This extended lifespan allowed us to dynamically lineage trace and quantify the formation of insulin-producing cells in HPS from both non-diabetic and type 2 diabetic donors. This technology is expected to be of great impact for the conduct of real-time regeneration/developmental studies in the human pancreas. The ability to culture live pancreatic tissue slices for long periods of time would enable longitudinal studies ex vivo. Here the authors culture human and mouse pancreatic slices in a perfluorocarbon-based culture system and show stable endocrine and exocrine function for up to ten days in culture.

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