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Integration of Multiple Metabolic Signals Determines Cell Fate Prior to Commitment
Orlando Argüello-Miranda1, Yanjie Liu1, N Ezgi Wood1
1Department of Cell Biology, UT Southwestern Medical Center, 6000 Harry Hines Boulevard, Dallas, TX 75390, USA.
Molecular Cell
|September 4, 2018
Summary
Cells make future fate decisions early, integrating metabolic signals before commitment. This early cell fate determination remains stable, occurring before downstream pathways activate.
Area of Science:
- Cell biology
- Yeast genetics
- Systems biology
Background:
- Cell-fate decisions are crucial for organism survival and development.
- The timing and extent of pre-commitment cell fate decisions remain poorly understood.
- Experimental limitations hinder the measurement of multiple signals at the single-cell level during decision-making.
Purpose of the Study:
- To investigate the timing of cell fate decisions relative to commitment.
- To determine if cells can predict future fates before commitment.
- To explore the role of metabolic signals in early cell fate determination.
Main Methods:
- Utilized six-color live-cell imaging in budding yeast.
- Applied the Bayesian method of statistical evidence for data analysis.
- Monitored and integrated multiple upstream metabolic signals at the single-cell level.
Main Results:
- Integration of metabolic signals accurately predicts individual cell fates before commitment.
- Cells establish their fate decisions well before downstream pathways are activated.
- These early decisions are stable across multiple cell cycles.
- Fate determination occurs when metabolic parameters cross specific thresholds.
Conclusions:
- Cells possess the capacity for early cell fate decisions, preceding commitment.
- Metabolic signals play a critical role in predicting and establishing future cell fates.
- This study provides a framework for understanding pre-commitment decision-making in biological systems.
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