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Generation of blastoids from human parthenogenetic stem cells
Ke Zhong1,2, Yu-Xin Luo2,3, Dan Li4
1Key Laboratory for Major Obstetric Diseases of Guangdong Province, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou 510150, China.
Life Medicine
|January 28, 2025
Summary
Researchers created parthenogenetic blastoids from human parthenogenetic embryonic stem cells. These blastoids mimic early human development, aiding studies on genomic imprinting and parental origin effects.
Area of Science:
- Developmental Biology
- Stem Cell Research
- Genomic Imprinting
Background:
- Parthenogenetic embryos lack paternal genomic imprints, impacting development.
- Human parthenogenetic embryonic stem cells (hPg-ESCs) are valuable tools for studying genomic imprinting.
- Gaps remain in understanding parthenogenetic embryonic development due to defects and ethical considerations.
Purpose of the Study:
- To generate and characterize parthenogenetic blastoids from hPg-ESCs.
- To compare parthenogenetic blastoids with biparental blastoids for developmental insights.
- To investigate genomic imprinting and X chromosome inactivation in parthenogenetic development.
Main Methods:
- Generation of parthenogenetic blastoids (hPg-EPSCs blastoids) from hPg-ESC-derived extended pluripotent stem cells (hPg-EPSCs).
- Utilized a previously established two-step induction protocol.
- Morphological, marker expression, and single-cell transcriptome analysis (RNA-seq).
Main Results:
- Successfully generated hPg-EPSCs blastoids with key cell lineages comparable to human biparental blastoids (hBp-EPSCs blastoids).
- Single-cell RNA-seq revealed similarities and differences in imprinting and X chromosome inactivation gene expression.
- Confirmed the presence of crucial cell lineages within the parthenogenetic blastoids.
Conclusions:
- Generated functional parthenogenetic blastoids from hPg-ESCs.
- These blastoids offer a novel model for studying genomic imprinting during human embryonic development.
- Potential to uncover parental origin biases in human development and disease mechanisms.
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