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Mapping the Emergent Spatial Organization of Mammalian Cells using Micropatterns and Quantitative Imaging
Published on: April 30, 2019
Spatial dynamics of multistage cell lineages in tissue stratification
Ching-Shan Chou1, Wing-Cheong Lo, Kimberly K Gokoffski
1Department of Mathematics, The Ohio State University, Columbus, OH, USA. chou@math.ohio-state.edu
Biophysical Journal
|November 18, 2010
Summary
Tissue stratification during development relies on signaling molecules regulating cell proliferation. Low terminally differentiated cell death rates are crucial for tissue lamination and organization.
Area of Science:
- Developmental biology
- Tissue engineering
- Computational modeling
Background:
- Multistage cell lineages, including stem and progenitor cells, specify terminally differentiated cell types in self-renewing tissues.
- Tissue stratification, where cells at different lineage stages occupy distinct spatial locations, is genetically specified but poorly understood.
- Understanding tissue lamination mechanisms is vital for developmental and regenerative biology.
Purpose of the Study:
- To explore mechanisms generating tissue stratification during developmental or regenerative growth.
- To investigate the role of signaling molecules and cell death rates in tissue lamination.
- To model stratification in general systems and the mouse olfactory epithelium.
Main Methods:
- Utilized computational modeling and simulations.
- Investigated the impact of diffusive signaling molecule distribution on cell proliferation.
- Analyzed the influence of terminally differentiated cell death rates on tissue lamination.
- Examined feedback regulation of stem cell cycle lengths.
Main Results:
- Tissue stratification can be achieved by controlling the spatial distribution of signaling molecules that regulate cell proliferation.
- Low terminally differentiated cell death rates are essential for effective tissue lamination; high rates impair it.
- Feedback signals regulating stem cell cycle length can cause transient stem cell accumulation at tissue extremes.
Conclusions:
- Spatial control of signaling molecules is a key mechanism for generating and maintaining tissue stratification.
- Terminally differentiated cell death rate is a critical parameter influencing the degree of tissue lamination.
- Feedback-mediated regulation of stem cell cycle dynamics contributes to spatial organization within developing tissues.
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