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An Efficient Method for Directed Hepatocyte-Like Cell Induction from Human Embryonic Stem Cells
Published on: May 6, 2021
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Induced hepatic stem cells are suitable for human hepatocyte production
Yoshiki Nakashima1,2, Chika Miyagi-Shiohira1, Issei Saitoh3
1Department of Regenerative Medicine, Graduate School of Medicine, University of the Ryukyus, 207 Uehara, Nishihara, Okinawa 903-0215, Japan.
Iscience
|September 23, 2022
Summary
Researchers generated induced pluripotent stem cells (iPSCs) from human hepatocytes using Sendai virus vectors. These novel iPSCs, termed iTS-L cells, demonstrated enhanced differentiation into hepatocyte-like cells and reduced teratoma formation.
Area of Science:
- Stem Cell Biology
- Regenerative Medicine
- Epigenetics
Background:
- Induced pluripotent stem cells (iPSCs) offer potential for regenerative medicine.
- Generating iPSCs from adult somatic cells typically involves reprogramming factors.
- Hepatocyte-derived iPSCs have unique characteristics and potential applications.
Purpose of the Study:
- To generate and characterize hepatocyte-derived induced pluripotent stem cells (iPSCs) using Sendai virus vectors.
- To investigate the differentiation potential and safety profile of these novel iPSCs.
- To compare hepatocyte-derived iPSCs with traditional fibroblast-derived iPSCs.
Main Methods:
- Human hepatocytes were transfected with Sendai virus vectors (SeV) expressing OCT3/4, SOX2, KLF4, and C-MYC.
- Messenger RNA (mRNA) expression of undifferentiated and hepatocyte-specific markers was analyzed.
- Microarray, methylation analyses, teratoma formation assays, and in vitro differentiation were performed.
Main Results:
- Ten hepatocyte-derived iPSC clones continuously expressed hepatocyte-specific markers (HNF1β and HNF4α).
- These induced tissue-specific stem cells from liver (iTS-L) cells exhibited distinct methylation and microarray profiles compared to fibroblast-derived iPSCs.
- iTS-L cells showed reduced teratoma formation and enhanced differentiation into hepatocyte-like cells.
Conclusions:
- Sendai virus vectors efficiently induce hepatocyte-derived iPSCs and iTS-L cells.
- iTS-L cells represent a promising cell source for liver regeneration and disease modeling.
- Hepatocyte-derived iPSCs possess unique properties advantageous for specific therapeutic applications.
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