Amal Essaouiba , Rachid Jellali , Stéphane Poulain , Soo Hyeon Kim , Mathieu Danoy , Cécile Legallais , Yasuyuki Sakai , Eric Leclerc
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引用次数: 0
Abstract
Interactions between the liver and pancreas are key features of the carbohydrate and lipid homeostasis in healthy and pathological patients. To investigate the crosstalk between the two organs, we have developed an organ-on-chip coculture model derived from human induced pluripotent stem cells. The presence of pancreatic-derived tissue in the culture environment contributed to increase the CYP3A4 activity, the glycogen storage, and the expression of genes related to lipids, bile acids and sterol metabolism in the liver derived tissue. Concomitantly, the presence of liver cells led to increase the C-peptide secretion in pancreas. The coculture with liver modulated the pancreatic differentiation by increasing the activity of important transcription factors (REST, MAFB, PBX1) and by downregulating several hormone encoding genes (INS, GCG, TTR). The liver also stimulated the expression of genes involved in the response to inflammation in pancreas (via TGFβ/SMAD pathway). In parallel we observed a pancreatic cell reorganization coupled with the activation of the cell proliferation related transcription factor (SCRT1) and the upregulation of cellular remodeling genes (FLNA, FLNB, FN1, COL4A5). Finally, the pancreatic lipid genes were also upregulated in presence of the liver tissue. Overall, our results reflect a complex synergy between both tissues. We believe that those results are an encouraging step toward the development of relevant human model using advanced organ-on-chip technology and stem cells sources.
期刊介绍:
Molecular and Cellular Endocrinology was established in 1974 to meet the demand for integrated publication on all aspects related to the genetic and biochemical effects, synthesis and secretions of extracellular signals (hormones, neurotransmitters, etc.) and to the understanding of cellular regulatory mechanisms involved in hormonal control.