Hepatocyte-like cells derived from human induced pluripotent stem cells using small molecules: implications of a...

Area of Science:

• Stem cell biology
• Hepatocyte differentiation
• Toxicology

Background:

• Human induced pluripotent stem cells (iPSCs) can generate hepatocyte-like cells (HLCs) for regenerative medicine and toxicology.
• Small molecules (SMs) offer a cost-effective and high-quality alternative to growth factors (GFs) for cell fate induction.
• Characterization of SM-derived HLCs, particularly at the transcriptome level, is limited.

Purpose of the Study:

• To characterize HLCs derived from human iPSCs using a small molecule (SM)-only differentiation protocol.
• To analyze the transcriptome of SM-derived HLCs (HLC_SM) and compare them to other hepatocyte models.
• To identify pathways and regulators for improving HLC differentiation.

Main Methods:

• Differentiated HLCs from human iPSCs using an SM-only protocol.
• Performed whole-genome transcriptomic analysis of HLC_SM.
• Utilized CellNet for quantitative comparison with primary human hepatocytes (PHHs) and other HLCs.

Main Results:

• HLC_SM exhibited specific hepatic markers and functions.
• Transcriptomic profiling elucidated hepatocyte differentiation stages and key gene expression.
• HLC_SM showed a mixed fetal/adult phenotype and lower expression of metabolic genes compared to PHHs.

Conclusions:

• The SM-based differentiation method is effective for generating HLCs.
• The study provides insights into hepatogenesis molecular mechanisms and gene regulation.
• Identified strategies to enhance HLC maturation for toxicological applications.