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Seeding hESCs to achieve optimal colony clonality.
L E Wadkin1, S Orozco-Fuentes2, I Neganova3,4
1School of Mathematics, Statistics and Physics, Newcastle University, Newcastle upon Tyne, UK. l.e.wadkin@ncl.ac.uk.
Scientific Reports
|October 27, 2019
Summary
Achieving clonal homogeneity in human embryonic stem cells (hESCs) and induced pluripotent stem cells (iPSCs) is crucial for clinical applications. This study models colony growth to optimize seeding densities, balancing yield with clonality.
Area of Science:
- Stem cell biology
- Developmental biology
- Biotechnology
Background:
- Human embryonic stem cells (hESCs) and induced pluripotent stem cells (iPSCs) are vital for regenerative medicine.
- Clinical applications require clonally homogeneous cell populations, originating from single cells.
- Low seeding densities ensure clonality but reduce yield and viability.
Purpose of the Study:
- To develop a quantitative model for human embryonic stem cell colony growth.
- To assess the impact of seeding density on clonality loss.
- To optimize experimental protocols for achieving clonal homogeneity.
Main Methods:
- Stochastic exponential growth modeling of hESC colonies.
- Quantitative framework to predict colony merging timescales.
- Experimental validation using hESC colony growth.
Main Results:
- Identified critical timescales for colony merging.
- Determined when colony size ceases to predict founding cell number.
- Demonstrated model applicability to experimental data.
Conclusions:
- The developed model quantitatively predicts clonality loss based on seeding density.
- This framework aids in optimizing hESC and iPSC culture for clinical applications.
- The model is adaptable to various cell lines and experimental conditions.
