Dataset Information

Proteomic profiling of murine biliary-derived hepatic organoids and their capacity for drug disposition, bio-activation and detoxification

ABSTRACT: Hepatic organoids are a recent innovation in in vitro modelling. Initial studies suggest organoids better recapitulate the liver phenotype in vitro compared to pre-existing proliferative cell models. However, their propensity for drug metabolism and detoxification remains poorly characterised. A global proteomic profiling of undifferentiated and differentiated hepatic murine organoids and donor-matched livers was therefore performed to assess both their similarity to liver tissue and DMET expression. iTRAQ analysis revealed 4,405 proteins commonly detected across all sample types. Differentiation of organoids significantly increased the expression of multiple CYP450s, phase II enzymes, liver biomarkers and hepatic transporters. While the final phenotype of differentiated organoids is distinct from liver tissue, they contain multiple DMET proteins necessary for liver function and drug metabolism, such as CYP450 3A, GSTA and MDR1A. Hepatic organoids may therefore represent an attractive novel model for hepatotoxicity testing, although further experimentation, optimisation and characterisation is needed relative to pre-existing models to fully contextualise their use as a putative in vitro model of DILI.

INSTRUMENT(S): TripleTOF 6600

ORGANISM(S): Mus Musculus (mouse)

TISSUE(S): Liver

SUBMITTER: Rosalind Jenkins

LAB HEAD: Rosalind Elspeth Jenkins

PROVIDER: PXD017986 | Pride | 2021-06-03

REPOSITORIES: Pride

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Publications

Proteomic profiling of murine biliary-derived hepatic organoids and their capacity for drug disposition, bioactivation and detoxification.

Howell Lawrence L Jenkins Rosalind E RE Lynch Stephen S Duckworth Carrie C Kevin Park B B Goldring Christopher C

Archives of toxicology 20210529 7

Hepatic organoids are a recent innovation in in vitro modeling. Initial studies suggest that organoids better recapitulate the liver phenotype in vitro compared to pre-existing proliferative cell models. However, their potential for drug metabolism and detoxification remains poorly characterized, and their global proteome has yet to be compared to their tissue of origin. This analysis is urgently needed to determine what gain-of-function this new model may represent for modeling the physiologica ...[more]

PMID: 34050779

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Project description:We previously established long-term 3D organoid culture systems for several murine tissues (intestine, stomach, pancreas and liver) as well as human intestine and pancreas. Here, we describe culture conditions to generate long-term 3D culture from human gastric stem cells. The technology can be applied to study the epithelial response to infection with Helicobacter pylori. Human gastric cultures can expand indefinitely in 3D Matrigel. Cultures can be generated from normal tissue, from single sorted stem cells, or from tumor tissue. Organoids maintain many characteristics of the respective tissue in terms of histology, marker expression and euploidy. Organoids from normal tissue express markers of four lineages of the stomach and self-organize in gland and pit-domains. They can be directed to specifically express either lineages of the gastric gland, or the gastric pit by addition of Nicotinamide and withdrawal of Wnt. While gastric pit lineages react marginally to bacterial infection, gastric gland lineages mount a strong inflammatory response. The gastric culture system provides a unique tool to study gastric pathologies. We generated 2 sets of experiments. The first set contains organoids in 4 conditions: (1) organoids in expansion condition ENRWFGNiTi ("gland-type organoids") from 3 donors, (2) organoids as in 1 but differentiated for 4 days in differentiation condition ENR_FGNiTi ("pit'type organoids"), (3) organoids as in 1 but infected with Helicobacter pylori strain P12 MOI 50 for 2 h, (4) organoids as in 2 but infected as in 3. All 4 conditions were tested on the same organoid line in parallel. This experiment was conducted independently with cultures from 3 different donors. The second set of experiments compares freshly isolated glands with organoids. Samples from 2 patients were analyzed. Each patient received a total gastrectomy. From each patient, glands from corpus region or pyloric antrum were isolated. From each isolation, one aliquod was stored for microarray analysis and one aliquod used to generate organoids. Organoids and glands were subsequently lysed and analyzed in parallel.

Dataset Information

Proteomic profiling of murine biliary-derived hepatic organoids and their capacity for drug disposition, bio-activation and detoxification

Publications

Proteomic profiling of murine biliary-derived hepatic organoids and their capacity for drug disposition, bioactivation and detoxification.

Similar Datasets

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