Related Experiment Video
Updated: Aug 10, 2026
11:25
Quantitative Analysis of Protein Expression to Study Lineage Specification in Mouse Preimplantation Embryos
Published on: February 22, 2016
Sex-specific gene expression in preimplantation mouse embryos
Guy S Eakin1, Anna-Katerina Hadjantonakis
1Developmental Biology Program, Sloan-Kettering Institute, New York, NY 10021, USA.
Genome Biology
|March 9, 2006
Summary
Early mouse embryos show sex-specific gene expression. Nearly 600 genes are expressed differently between sexes, with one gene active only in females from the paternal X chromosome.
Area of Science:
- Developmental Biology
- Genetics
- Epigenetics
Background:
- The early mammalian embryo undergoes complex developmental processes.
- Understanding gene expression patterns is crucial for deciphering developmental pathways.
Purpose of the Study:
- To investigate sex-specific gene expression in the blastocyst stage mouse embryo.
- To identify genes with differential expression related to embryonic sex.
Main Methods:
- Analysis of gene expression in 3.5-day-old mouse blastocysts.
- Identification of sex-biased gene expression patterns.
Main Results:
- Approximately 600 genes exhibit sex-specific expression in the blastocyst.
- The Rhox/Pem gene is expressed exclusively in female embryos, originating from the paternal X chromosome.
Conclusions:
- Significant sex-specific gene regulation occurs at the blastocyst stage.
- Paternal X chromosome activity in females is a notable finding in early development.
