Related Experiment Video
Updated: Nov 1, 2025
10:36
Chromatin Immunoprecipitation from Human Embryonic Stem Cells
Published on: July 22, 2008
21.1K
Interphase Chromatin Undergoes a Local Sol-Gel Transition upon Cell Differentiation
Iraj Eshghi1, Jonah A Eaton1, Alexandra Zidovska1
1Center for Soft Matter Research, Department of Physics, New York University, New York, New York 10003, USA.
Physical Review Letters
|June 21, 2021
Summary
Stem cells differentiate into specialized cells through chromatin reorganization. Undifferentiated stem cell chromatin is fluidlike, becoming solidlike and less dynamic after differentiation, forming heterochromatin.
Area of Science:
- Cell Biology
- Biophysics
- Genetics
Background:
- Cell differentiation involves significant changes in chromatin organization within the nucleus.
- Understanding chromatin dynamics is crucial for comprehending stem cell specialization.
Purpose of the Study:
- To investigate chromatin distribution and dynamics in embryonic stem cells in vivo before and after differentiation.
- To characterize the rheological properties of chromatin during cell differentiation.
Main Methods:
- In vivo measurement of chromatin distribution and dynamics in embryonic stem cells.
- Noninvasive rheological analysis using intrinsic chromatin dynamics.
Main Results:
- Undifferentiated chromatin is less compact, more homogeneous, and more dynamic than differentiated chromatin.
- Undifferentiated chromatin exhibits Maxwell fluid behavior.
- Differentiated chromatin displays a coexistence of fluidlike (sol) and solidlike (gel) phases.
Conclusions:
- Cell differentiation induces a local sol-gel transition in chromatin.
- This transition correlates with the formation of denser, transcriptionally inactive heterochromatin.
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