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Updated: Jun 12, 2026
08:43
Loss- and Gain-of-function Approach to Investigate Early Cell Fate Determinants in Preimplantation Mouse Embryos
Published on: June 6, 2016
Systematic Methods to Resolve Lineage-Specific Stress States in Early Mammalian Embryos and That May Enable
Ximena L Ruden1,2, Campbell Coddington3, Lynessa Asplund1
1Department of Obstetrics and Gynecology, C. S. Mott Center for Human Growth and Development, Wayne State University, 275 East Hancock Street, Detroit, MI 48201, USA.
Cells
|June 11, 2026
Summary
A new transcriptomics framework assesses early embryo stress by comparing human embryos to stem cells. This method quantifies stress levels and developmental trajectories, improving In Vitro Fertilization (IVF) outcomes.
Area of Science:
- Reproductive Biology
- Developmental Biology
- Genomics
Background:
- Early mammalian embryos are vulnerable to various stressors, impacting In Vitro Fertilization (IVF) success.
- Current IVF embryo assessment methods (morphology, ploidy) have limitations in predicting miscarriage.
- Understanding lineage-specific stress responses is crucial for improving IVF outcomes.
Purpose of the Study:
- To develop a transcriptomics-based framework for classifying and quantifying lineage-specific stress in early mammalian embryos.
- To benchmark human preimplantation embryos against defined stress programs in Embryonic Stem Cells (ESCs) and Trophoblast Stem Cells (TSCs).
- To determine if the Integrated Stress Response (ISR) resolves into the Developmentally Associated Stress Response (DASR).
Main Methods:
- Utilized transcriptomic markers from eleven Gene Ontology (GO) groups to screen human embryos, ESCs, and TSCs.
- Employed High-Throughput Screening (HTS) to titrate stress and define dose-dependent effects on stem cell growth.
- Applied bulk RNA sequencing to identify lineage-specific stress markers and analyze IVF embryo transcriptomic data.
Main Results:
- Developed a framework to quantify pathway activity, stress states, and downstream outcomes in embryos.
- Identified transcriptomic signatures distinguishing weak vs. strong stress and resolved vs. unresolved ISR.
- Successfully applied the framework to IVF embryo data, enabling quantitative inference of stress burden and developmental trajectory.
Conclusions:
- The transcriptomics framework offers a novel approach to assess embryo stress beyond morphology and ploidy.
- This method provides quantitative insights into lineage vulnerability and developmental potential in IVF embryos.
- The findings pave the way for improved embryo selection and enhanced IVF success rates.
