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Generation of Hepatocytes

Hepatocytes are the principal functional cells of the liver, playing a critical role in various metabolic processes, drug metabolism, and detoxification. Generating functional hepatocytes from stem cells is a significant milestone in regenerative medicine and drug development. Creative Biolabs presents a comprehensive protocol for stem cell differentiation to generate hepatocytes. This protocol provides detailed guidelines on the materials required, the step-by-step procedure, and important notes for successful hepatocyte differentiation.

Materials Required

  • Induced pluripotent stem cells (iPSCs) with a known pluripotent state
  • Pluripotent stem cell maintenance medium
  • Definitive endoderm induction medium
  • Hepatocyte differentiation medium
  • Antibodies specific for hepatocyte markers
  • Immunofluorescence reagents

Procedure

Pluripotent Stem Cell Culture

Pluripotent Stem Cell Culture

Maintain iPSCs in pluripotent stem cell maintenance medium. Change medium daily and monitor cell morphology. Passage cells as required to maintain sub-confluent culture. Assess pluripotency using immunofluorescence or flow cytometry for pluripotent markers.

Pluripotent Stem Cell Culture

Definitive Endoderm Induction

Passage pluripotent stem cells to a new Matrigel-coated dish or plate. After reaching 70-80% confluency, replace pluripotent stem cell medium with definitive endoderm induction medium. Culture cells for 3-5 days, changing medium daily. Observe the formation of definitive endoderm cells with a typical cobblestone-like morphology.

Hepatoblast Formation

Hepatoblast Formation

Induce hepatoblast formation by changing the medium to hepatocyte differentiation medium. Continue daily medium changes and culture for 7-10 days. Observe cell morphology for the presence of hepatoblast-like cells.

Maturation and Functional Assessment

Maturation and Functional Assessment

Culture hepatoblasts in hepatocyte differentiation medium for an additional 2-4 weeks. Monitor cell morphology, and assess hepatocyte marker expression via immunofluorescence, real-time PCR, and Western blotting. Assess functional hepatocyte properties, including Albumin and CYP activity. Cryopreserve differentiated hepatocytes if necessary.

Notes

  • Regularly check cell morphology and purity throughout the differentiation process. Ensure the absence of spontaneous differentiation and contamination.
  • Perform media changes gently to avoid disrupting cell layers. Use pre-warmed medium for all replacements.
  • The efficiency of hepatocyte differentiation can vary depending on the cell source and specific protocols. Optimize conditions based on your specific needs.
  • Always work in a sterile environment to minimize contamination.

In conclusion, this protocol provides a guideline for the differentiation of stem cells into functional hepatocytes. By following these steps and considering the provided notes, researchers can successfully generate hepatocytes for various applications, including disease modeling, drug screening, and regenerative medicine.

For more detailed and tailored protocols or access to specialized reagents, consult with the experts at Creative Biolabs. Our team is dedicated to advancing your research goals and ensuring the success of your stem cell differentiation projects. Contact us today to explore our comprehensive services and expertise in stem cell-related applications.

Reference

  1. Mallanna, Sunil K., and Stephen A. Duncan. "Differentiation of hepatocytes from pluripotent stem cells." Current protocols in stem cell biology 26.1 (2013): 1G-4.

For Research Use Only. Not For Clinical Use.