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Protocol for Human Blastoids Modeling Blastocyst Development and Implantation
Published on: August 10, 2022
Patient-specific stem cell lines derived from human parthenogenetic blastocysts
E S Revazova1, N A Turovets, O D Kochetkova
1Lifeline Cell Technology, Walkersville, Maryland, USA.
Cloning and Stem Cells
|June 28, 2007
Summary
Researchers successfully created six pluripotent human embryonic stem cell (hESC) lines from parthenogenetic embryos. These cells are histocompatible, offering potential for cell-based therapies with minimal animal components.
Area of Science:
- Reproductive Biology
- Stem Cell Biology
- Immunology
Background:
- Parthenogenetic activation of human oocytes is a potential method for generating histocompatible cells for therapeutic applications.
- Human embryonic stem cells (hESC) hold promise for regenerative medicine but face challenges related to immune rejection.
Purpose of the Study:
- To derive and characterize pluripotent human embryonic stem cell (hESC) lines from parthenogenetic embryos.
- To assess the suitability of these parthenogenetic hESC (phESC) lines for potential clinical use.
Main Methods:
- Derivation of six pluripotent hESC lines from parthenogenetic blastocysts.
- Characterization of phESC lines for morphology, marker expression, alkaline phosphatase, and telomerase activity.
- Karyotyping, DNA profiling (MHC matching), imprinted gene analysis, and in vivo differentiation studies (teratoma formation).
Main Results:
- Successfully derived six phESC lines with typical hESC morphology and high pluripotency markers.
- phESC lines exhibited normal karyotypes (except one), formed embryoid bodies, and differentiated into all three germ layers.
- DNA profiling confirmed MHC matching with oocyte donors, and imprinted gene studies supported parthenogenetic origin. Protocol minimizes animal-derived components.
Conclusions:
- Established a protocol for producing human parthenogenetic embryos and deriving stem cell lines.
- Derived phESC lines are pluripotent, histocompatible, and suitable for potential clinical applications due to minimized animal-derived components.
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