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Derivation of human embryonic stem cells from day-8 blastocysts recovered after three-step in vitro culture

Lookup NU author(s): Professor Miodrag Stojkovic, Professor Majlinda LakoORCiD, Petra Stojkovic, Dr Rebecca Stewart, Professor Lyle Armstrong, Professor Mary Herbert, Dr Louise Hyslop, Dr Sajjad Ahmad, Professor Alison Murdoch, Professor Tom Strachan


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Human embryonic stem cells (hESCs) have been derived from the inner cell mass (ICM) of day 5-7 blastocysts and hold great promise for research into human developmental biology and the development of cell therapies for the treatment of human diseases. We report here that our novel three-step culture conditions successfully support the development of day-8 human blastocysts, which possess significantly (p <.01) more ICM cells than day-6 blastocysts. Plating of ICMs isolated from day-8 blastocysts resulted in the formation of a colony with hESC morphology from which a new hESC line (hES-NCL1) was derived. Our stem cell line is characterized by the expression of specific cell surface and gene markers: GTCM-2, TG343, TRA1-60, SSEA-4, alkaline phosphatase, OCT-4, NANOG, and REX-1. Cytogenetic analysis of the hESCs revealed that hES-NCL1 line has a normal female (46, XX) karyotype. The pluripotency of the cell line was confirmed by the formation of teratomas after injection into severely combined immunodeficient mice and spontaneous differentiation under in vitro conditions.

Publication metadata

Author(s): Stojkovic M, Lako M, Stojkovic P, Stewart R, Przyborski S, Armstrong L, Evans J, Herbert M, Hyslop L, Ahmad S, Murdoch A, Strachan T

Publication type: Article

Publication status: Published

Journal: Stem Cells

Year: 2004

Volume: 22

Issue: 5

Pages: 790-797

Print publication date: 01/01/2004

ISSN (print): 1066-5099

ISSN (electronic): 1549-4918

Publisher: AlphaMed Press, Inc.


DOI: 10.1634/stemcells.22-5-790

PubMed id: 15342943


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Funder referenceFunder name
G0301182Medical Research Council