A comprehensive transcriptomic comparison of hepatocyte model systems
Ontology highlight
ABSTRACT:
ORGANISM(S): Homo sapiens
PROVIDER: GSE214097 | GEO | 2022/09/25
REPOSITORIES: GEO
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Project description:Mechanisms underlying human hepatocyte growth in development and regeneration are incompletely understood. In vitro, human fetal hepatocytes (FH) can be robustly grown as organoids, while adult primary human hepatocyte (PHH) organoids remain difficult to expand, suggesting different growth requirements between fetal and adult hepatocytes. Here, we characterize hepatocyte organoid outgrowth using temporal transcriptomic and phenotypic approaches. FHs initiate reciprocal transcriptional programs involving increased proliferation and repressed lipid metabolism upon initiation of organoid growth. We exploited these insights to design maturation conditions for FH organoids, resulting in acquisition of mature hepatocyte morphological traits and increased expression of functional markers. During PHH organoid outgrowth in the same culture condition, the adult transcriptomes initially mimic the fetal transcriptomic signatures, but PHHs rapidly acquire disbalanced proliferation-lipid metabolism dynamics, resulting in steatosis and halted organoid growth. IL6 supplementation, as emerged from the fetal dataset, and simultaneous activation of the metabolic regulator FXR, prevents steatosis and promotes PHH proliferation, resulting in improved expansion of the derived organoids. Single-cell RNA sequencing analyses reveal preservation of their fetal and adult hepatocyte identities in the respective organoid cultures. Our findings uncover mitogen requirements and metabolic differences determining proliferation of hepatocytes changing from development to adulthood.
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Project description:Mechanisms underlying human hepatocyte growth in development and regeneration are incompletely understood. In vitro, human fetal hepatocytes (FH) can be robustly grown as organoids, while adult primary human hepatocyte (PHH) organoids remain difficult to expand, suggesting different growth requirements between fetal and adult hepatocytes. Here, we characterize hepatocyte organoid outgrowth using temporal transcriptomic and phenotypic approaches. FHs initiate reciprocal transcriptional programs involving increased proliferation and repressed lipid metabolism upon initiation of organoid growth. We exploited these insights to design maturation conditions for FH organoids, resulting in acquisition of mature hepatocyte morphological traits and increased expression of functional markers. During PHH organoid outgrowth in the same culture condition, the adult transcriptomes initially mimic the fetal transcriptomic signatures, but PHHs rapidly acquire disbalanced proliferation-lipid metabolism dynamics, resulting in steatosis and halted organoid growth. IL6 supplementation, as emerged from the fetal dataset, and simultaneous activation of the metabolic regulator FXR, prevents steatosis and promotes PHH proliferation, resulting in improved expansion of the derived organoids. Single-cell RNA sequencing analyses reveal preservation of their fetal and adult hepatocyte identities in the respective organoid cultures. Our findings uncover mitogen requirements and metabolic differences determining proliferation of hepatocytes changing from development to adulthood.
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Project description:3D cell culture systems (organoids), cultured from extrahepatic bile duct biopsies, resemble biliary epthelium (cholangiocytes) upon culture according to the protocol previously established for culturing intrahepatic cholangiocyte organoids from liver biopsies (Huch et al. Cell 2015). These extrahepatic cholangiocyte organoids (ECOs) in Canonical-Wnt culture conditions maintain their genetic stability, and transcription profile and can be maintained and propagated during long periods of culturing while still maintaining their functional properties. The data presented in this ArrayExpress submission contained micro array results of 3 different ECO lines that were analyzed for their functional cholangiocyte ion-channels, involved in secreting a protective bicarbonate layer. It was shown that these data closely resemble the expression profile of intrahepatic cholangiocyte organoids (ICOs) as described by our group. Results of the ICOs are deposited in the EMBL-EBI ArrayExpress repository under number E-MTAB-9044.
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Project description:A comprehensive transcriptomic comparison of hepatocyte model systems
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Project description:The goal of this experiment was to test whether human hepatocytes could give rise to biliary-like progenitor cells in an in vivo context. Here Fah-/- Il2ry-/- Rag2-/-NOD mouse livers were humanized with human hepatocytes. Only hepatocytes engraft in the Fah-/- mouse at detectable levels in this model. Then animals were given chronic liver injury with 0.1% ddc. After injury we measured human-specific transcripts to determine whether the phenotype of the human cells had changed. Specifically, we evaluated the relative levels of human biliary duct markers such as Spp1, Sox9, Krt7, etc. and hepatocyte markers such as Alb, Ttr, Fah, etc. 3 DDC treated chimeras and 6 untreated chimeras are included. Additional controls include a normal human liver biopsy, FACS sorted primary intrahepatic human bile duct cells, mouse hepatocytes, and mouse intrahepatic biliary cells in ddc treated animal.
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Project description:Culture of human cholangiocyte organoids in hydrogels derived from healthy liver extracellular matrix (LECM) extracts prepared from decellularized human livers are evaluated in an effort to establish a platform for production of cholangiocyte organoids for clinical regenerative applications. Human intrahepatic cholangiocyte organoids (ICO) grown in hydrogels made from LECM are compared those grown in mouse tumor derived basement membrane extracts (BME). Culture was performed with amino acids labeled with stable heavy isotopes to enable separation of ECM from the hydrogels from that of the produced by the cells with mass spectrometry (MS). MS data were used to evaluate the protein production of ICO comparing the different hydrogel substrates. The study also contains evaluation of the properties of the hydrogel substrates and focuses on expansion and differentiation of the ICO.
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Project description:3D cell culture systems (organoids), cultured from liver biopsies, resemble biliary epthelium (cholangiocytes) upon culture. These intrahepatic cholangiocyte organoids (ICOs) maintain their gentic stability, transcription profile and can be maintained propagated during long periods of culturing while still maintaining their functional properties. The data presented in this ArrayExpress submission contained micro array results of 6 from 15 different ICO lines that were analyzed for their functional cholangiocyte ion-channels, involved in secreting a protective bicarbonate layer. It was shown that these data closely resemble the expression profiles of extrahepatic cholangiocyte organoids (ECOs), previously described by Sampaziotis et al. and deposited in the EMBL-EBI ArrayExpress repository (E-MTAB-4591)
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