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Conversion of terminally committed mouse hepatocytes to culturable bipotent progenitor cells

ABSTRACT: A challenge for advancing approaches to liver regeneration is loss of functional differentiation capacity when hepatocyte progenitors are maintained in culture. Recent lineage-tracing studies have shown that mature hepatocytes (MHs) convert to an immature state during chronic liver injury, and we investigated whether this conversion could be recapitulated in vitro and if such converted cells could represent a source of expandable hepatocytes. We report that a cocktail of small molecules, Y-27632, A-83-01 and CHIR99021, can convert rat and mouse MHs in vitro into proliferative bipotent cells, which we term chemically induced liver progenitors (CLiPs). CLiPs can differentiate into both MHs and biliary epithelial cells that can form functional ductal structures. CLiPs in long-term culture did not lose their proliferative capacity or their hepatic differentiation ability, and rat CLiPs were shown to extensively repopulate chronically injured liver tissue. Thus our study advances the goals of liver regenerative medicine. Transcriptomic analysis for mouse CLiPs at P1 which underwent hepatic induction (Matrix 1). Transcriptomic analysis for mouse CLiPs at P11-12 which underwent hepatic induction (Matrix 2).

ORGANISM(S): Mus musculus

PROVIDER: GSE87579 | GEO | 2016/11/15

SECONDARY ACCESSION(S): PRJNA345376

REPOSITORIES: GEO

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Conversion of terminally committed hepatocytes to culturable bipotent progenitor cells with regenerative capacity

Project description:A challenge for advancing approaches to liver regeneration is loss of functional differentiation capacity when hepatocyte progenitors are maintained in culture. Recent lineage-tracing studies have shown that mature hepatocytes (MHs) convert to an immature state during chronic liver injury, and we investigated whether this conversion could be recapitulated in vitro and if such converted cells could represent a source of expandable hepatocytes. We report that a cocktail of small molecules, Y-27632, A-83-01 and CHIR99021, can convert rat and mouse MHs in vitro into proliferative bipotent cells, which we term chemically induced liver progenitors (CLiPs). CLiPs can differentiate into both MHs and biliary epithelial cells that can form functional ductal structures. CLiPs in long-term culture did not lose their proliferative capacity or their hepatic differentiation ability, and rat CLiPs were shown to extensively repopulate chronically injured liver tissue. Thus our study advances the goals of liver regenerative medicine. Transcriptomic analyses for freshly isolated MHs and cells cultured for the designated periods with or without YAC stimulation (Matrix 1). Transcriptomic analysis for CLiPs which underwent hepatic induction (Matrix 2). Transcriptomic comparison of hepatic inducibility between CLiPs at early passage and those at late passages (Matrix 3). Transcriptomic comparison between chimera-derived rat cells (designated as “2nd”) and primary rat MH-derived cells (designated as “1st”) (Matrix 4).

2016-11-15 | GSE87611 | GEO

Phosphoproteome and proteome of mouse hepatocyte maturation and human hepatic reprogramming

Project description:To identify central protein kinases that potentially promote the maturation, we chemically induced liver progenitor cells (CLiPs) from mouse hepatocytes using a previously established protocol, and profiled the phosphoproteome and proteome of freshly isolated primary mouse hepatocytes (MHs) and ALBUMIN+ hepatocytes (CLiP-Hep) cells. To systematically interrogate the early regulatory events of hepatic reprogramming, we profiled the Phosphoproteome and proteome in human dermal fibroblasts (HDFs) at 2.25 days (FHH-2.25d) and 5 days (FHH-5d) after infection of lenti-virus encoding three liver-specific transcription factors, FOXA3, HNF1A and HNF4A (FHH). In this analysis, HDF infected with lenti-virus expressing GFP for 2.25 days (GFP) were used as control.

2022-08-05 | PXD035829 | iProX

Transcriptomics of mouse hepatocyte maturation and human hepatic reprogramming

Project description:Here, we chemically induced liver progenitor cells (CLiPs) from mouse hepatocytes using a previously established protocol. To identify central protein kinases (PKs) that potentially promote the maturation of lpc-Hep cells, we profiled the transcriptomes and phosphoproteomes of freshly isolated primary mouse hepatocytes (MHs) and ALBUMIN+ hepatocytes (CLiP-Heps) cells. Based on the algorithm developed by us and experiment verification, we validated three PKs that promote mouse hepatocyte maturation. Then, we use RNA sequencing technology to identify potential regulators during hepatic reprogramming with samples from HDFs 2.25 days (FHH-2.25d) and 5 days (FHH-5d) after FOXA3, HNF1A, and HNF4A (FHH) transduction, as well as HDFs transduced with GFP for 2.25 days (GFP) as the control group. After combined analysis with phosphoproteomic data with the algorithm and experiment verification, we identified 2 PKs that may be involved in hepatic reprogramming regulation. One of the five potential regulator candidates is PIM1, which can promote the progress remarkably with overexpression. Therefore, we next perform another RNA-seq to drive the molecular mechanisms under undergoing the regulation by PIM1. Finally, we revealed that cell cycle and ferroptosis pathways are involved in the regulation via PIM1.

2022-08-06 | GSE169702 | GEO

Chemically Induced CD24+ hepatocyte-derived liver progenitor-like cells revert chronic hepatic dysfunction

Project description:Administration of soluble molecules to induce endogenous adult liver progenitor-like cells may provide a clinically and effectively applicable approach for liver damage repair. Here, we report that HGF in combination with a cocktail of small molecules Y-27632, A-83-01, and CHIR99021 (HACY), which we have previously defined to convert mature hepatocytes (MHs) to liver progenitor-like cells (HepLPCs) in vitro, could induce the replenishment of endogenous HepLPCs and relieve chronic liver dysfunction during persistent injury. The liver progenitor cells surface marker, CD24, was found to be highly expressed in HepLPCs in vitro. Similarly, injection of HACY into mice with carbon tetrachloride (CCL4) treatment also induced conversion of mature hepatocytes to CD24+ progenitor-like cells in vivo, leading to the attenuation of liver fibrosis. Compared to the liver progenitor cells (LPCs) derived from nonparenchymal cells, HACY-induced CD24+ HepLPCs retained an increased hepatic function by RNA sequencing analysis and could promote restoration of liver function by replacing CCL4-impaired liver cells during chronic hepatic damages. And CD24+ liver stem cells could also be observed in human liver fibrosis tissues and expanded in 3D hepatic spheroid in the present of HACY. Together, the results of our study indicated that injection of a cocktail of HACY might be a valuable multiple targets therapy for patients with chronic liver fibrotic pathologies.

2019-07-01 | GSE125095 | GEO

RNA-seq transcriptional profiling in the Fah-/- livers after transplantation and YC treatment

Project description:The transplanted mature hepatocytes were found to dedifferentiate into hepatic progenitor cells (HPCs), which proliferate and then convert back to mature state at the completion of liver repopulation. The combination of two small molecules Y-27632 (Y, Rock inhibitor) and CHIR99021 (C, Wnt agonist) could convert mouse primary hepatocytes into HPCs, which could be passaged for more than 30 passages in vitro. Moreover, YC could stimulate the proliferation of transplanted hepatocytes in Fah-/- liver by promoting the conversion into HPCs. Netarsudil (N) and LY2090314 (L), two clinically used drugs which target the same pathways as YC, could also promote hepatocytes proliferation in vitro and in vivo, by facilitating HPC conversion.

2022-12-17 | GSE218952 | GEO

Transcriptome analysis of hiHepPCs in various culture conditions, human liver-derived hepatocytes, human liver-derived cholangiocytes, HUVECs, and HPBECs

Project description:Transcriptome analysis of human induced hepatic progenitor cells (hiHepPCs) in various culture conditions, human liver-derived hepatocytes, human liver-derived cholangiocytes, human umbilical vein endothelial cells (HUVECs), and human peripheral blood-derived endothelial cells (HPBECs) We found that a specific combination of three transcription factors, FOXA3, HNF1A, and HNF6, could convert HUVECs and HPBECs into cells that closely resembled hepatic progenitor cells in vitro. These hiHepPCs were expandable in long-term culture and able to differentiate into hepatocytes and cholangiocytes in accordance with their culture conditions. We conducted RNA-seq analyses to investigate the characteristincs of hiHepPCs and their progenies, in addition to those of parental HUVECs, HPBECs, and human liver-derived cells.

2020-08-12 | GSE120732 | GEO

A time-course study of bile duct ligation (BDL)-induced liver fibrosis in rats

Project description:The aim is to characterize rat liver fibrosis induced by bile duct ligation (BDL). To induce hepatic fibrosis, Male Sprague Dawley rats (9-12 weeks of age and 380-420 g of weight upon arrival, supplied by Beijing Vital River laboratory animal Co., Ltd.) underwent surgery of bile duct ligation (BDL). The bile ducts of Sprague-Dawley rats were ligated after 12 hours of fasting and water deprivation. Rat liver samples were collected from three groups of rats at week 1, 2 and 5 after BDL surgery. Three control groups of rats underwent sham operation, including bile duct mobilization, but without BDL. Three biological replicates were used for each group.

2021-09-29 | E-MTAB-10546 | biostudies-arrayexpress

Generation of integration-free induced hepatocytes from mouse fibroblasts

Project description:Previous studies demonstrated that hepatocyte-specific transcription factors could directly convert fibroblasts into functional hepatocytes-like cells, namely induced hepatocytes (iHeps) using viral systems. However, viral integration into host genome causes insertional mutation and risk of tumorigenecity. we showed iHeps could be generated from MEFs using the integration-free system. They were expandable in vitro and showed hepatic features, similar to primary hepatocytes. iHeps_G4H1F3 transfected (Episomal vectors) and iHeps_G4H1F3 transduced (pMXs) were duplicate, respectively. MEFs and primary hepatocytes were used as negative and positive controls, respectively.

2015-03-27 | E-GEOD-67362 | biostudies-arrayexpress

Pharmacological Induction of a Progenitor State for the Efficient Expansion of Primary Human Hepatocytes

Project description:Transplantation of genetically corrected hepatocytes is an attractive alternative to liver transplantation but is hampered by the low amplification potential of these cells in vitro. Here, we describe a method for generating proliferative hepatic progenitor cells (iHPC) from human hepatocytes as an expandable cell source for liver therapy. Dedifferentiation of primary hepatocytes to iHPC was achieved in less than 7 days by culturing the cells in medium with a cocktail of growth factors and small molecules. In culture, iHPC expressed a combination of endoderm hepatic progenitor and mesenchymal stem cell markers and proliferated vigorously, allowing for their expansion by at least 104 times. RNA sequencing of iHPC demonstrated that they displayed far more subtle changes in both transcriptome and transposcriptome, compared to hepatocyte-derived iPSC. Finally, transplantation of iHPC into the liver of immuno-deficient mice showed iHPC differentiation potential in vivo, without triggering detectable tumor development.

2019-09-25 | GSE87559 | GEO

Pharmacological Induction of a Progenitor State for the Efficient Expansion of Primary Human Hepatocytes

2019-09-25 | GSE87558 | GEO

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