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Profiling Individual Human Embryonic Stem Cells by Quantitative RT-PCR
Published on: May 29, 2014
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IMAGING REDOX STATE HETEROGENEITY WITHIN INDIVIDUAL EMBRYONIC STEM CELL COLONIES
He N Xu1,2, Russell C Addis3, Davida F Goings3
1Molecular Imaging Laboratory, Department of Radiology University of Pennsylvania, School of Medicine Philadelphia, PA 19104, USA.
Journal of Innovative Optical Health Sciences
|May 28, 2021
Summary
Mitochondrial redox state heterogeneity in mouse embryonic stem cell (mESC) colonies was observed. A more reduced core, correlating with pluripotency marker Oct4, suggests redox state as a potential stemness biomarker.
Area of Science:
- Stem cell biology
- Mitochondrial physiology
- Biomarker discovery
Background:
- Embryonic stem cell (ESC) differentiation is regulated by redox state, offering insights into pluripotency.
- The NADH redox ratio (NADH/(Fp + NADH)) is a sensitive indicator of mitochondrial redox state.
Purpose of the Study:
- To investigate the mitochondrial redox state heterogeneity within mouse ESC (mESC) colonies.
- To explore the correlation between mitochondrial redox state and pluripotency markers in mESCs.
Main Methods:
- Utilized a low-temperature NADH/Fp redox scanner for imaging mESC colonies.
- Grew mESCs on a feeder layer of gamma-irradiated mouse embryonic fibroblasts (MEFs).
Main Results:
- Observed significant heterogeneity in mitochondrial redox state within individual mESC colonies (200-440 μm).
- Identified a more reduced core compared to the periphery within mESC colonies.
- Found a positive correlation between the reduced mitochondrial redox state and Oct4 expression, a pluripotency marker.
Conclusions:
- This study is the first to demonstrate heterogeneity in mitochondrial redox state within mESC colonies.
- Mitochondrial redox state warrants further investigation as a potential biomarker for stemness in embryonic stem cells.
