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[Isolation and characterisation of continuous human embryonic stem cell lines]
T A Krylova1, V V Zenin, N S Musorina
1Institute of Cytology RAS, St. Petersburg.
Tsitologiia
|March 19, 2004
Summary
Human embryonic stem cells (hES) were cultivated long-term, demonstrating stable proliferation and characteristic stem cell markers. These findings establish continuous human embryonic stem cell lines for research.
Area of Science:
- Cell Biology
- Developmental Biology
- Stem Cell Research
Context:
- Long-term cultivation of human blastocyst-derived embryonic cells (hES) was performed over 5-8 months.
- Establishment and characterization of continuous human embryonic stem cell lines are crucial for various research applications.
Purpose:
- To establish and characterize continuous human embryonic stem cell lines (HESC-1 to HESC-4).
- To verify the undifferentiated state and pluripotency of the cultivated hES cells.
- To confirm species specificity and cell cycle characteristics.
Summary:
- Human embryonic stem cells (hES) were cultivated for 5-8 months, achieving 100-175 population doublings with a doubling time of 37.0 ± 1.5 hours.
- The established cell lines (HESC-1 to HESC-4) maintained stable proliferation, high alkaline phosphatase activity, and expression of Oct4.
- Immunofluorescence confirmed expression of hES-specific surface antigens (SSEA-3, SSEA-4, TRA-1-81, TRA-1-60) and lack of mouse-specific SSEA1, verifying pluripotency and species specificity.
Impact:
- Successfully established continuous human embryonic stem cell lines.
- Provides a valuable resource for stem cell research and regenerative medicine.
- Characterization data supports the use of these cell lines in future studies.