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[Human embryonic stem cell lines preliminarily established in China].

Zhixu He1, Shaoliang Huang, Yu Li

  • 1Centre of Stem Cell, Second Hospital Affiliated to Sun Yat-sen University, Guangzhou 510120, China.

Zhonghua Yi Xue Za Zhi
|January 3, 2003
PubMed
Summary

Researchers successfully established human embryonic stem cell lines in China. These cell lines, derived from fertilized ova, maintained pluripotency and formed teratomas in SCID mice, confirming their potential.

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Area of Science:

  • Developmental Biology
  • Stem Cell Research

Background:

  • Establishing human embryonic stem cell (hESC) lines is crucial for regenerative medicine and disease modeling.
  • Previous research has focused on establishing hESC lines globally, with limited reports from China.

Purpose of the Study:

  • To establish novel human embryonic stem cell lines from fertilized human ova within China.

Main Methods:

  • Human oocytes were fertilized in vitro, and developing blastocysts were used.
  • Inner cell masses (ICMs) were isolated and cultured on a feeder layer of inactivated mouse embryonic fibroblasts.
  • Alkaline phosphatase activity, stem cell surface markers, karyotyping, and teratoma formation in SCID mice were assessed.

Main Results:

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  • Three human embryonic stem cell lines (CHE1, CHE2, CHE3) were successfully established from five blastocysts.
  • The established cell lines exhibited positive alkaline phosphatase activity and expressed key human stem cell markers (SSEA-4, SSEA-3, TRA-1-60, GCTM-2) while lacking mouse ES cell marker SSEA-1.
  • All cell lines maintained a normal karyotype through extensive passaging and formed teratomas containing derivatives of all three embryonic germ layers after injection into SCID mice.

    • Conclusions:

    • Human embryonic stem cell lines have been successfully established in China.
    • These findings contribute to the global repository of characterized human embryonic stem cell lines.