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Updated: Feb 5, 2026
11:23
Measuring Cell Cycle Progression Kinetics with Metabolic Labeling and Flow Cytometry
Published on: May 22, 2012
21.7K
Converse Smith-Martin cell cycle kinetics by transformed B lymphocytes
K Pham1,2, A Kan1,2,3, L Whitehead1,2
1a Division of Immunology , The Walter and Eliza Hall Institute of Medical Research , Parkville , Australia.
Cell Cycle (Georgetown, Tex.)
|September 13, 2018
Summary
Transformed B lymphoma cells show cell cycle variation mainly in S/G2/M phases, not G1. This suggests a potential cancer marker in lymphocyte transformation and cell cycle regulation.
Area of Science:
- Cell Biology
- Cancer Research
- Immunology
Background:
- The Smith and Martin model posits G1 phase variation dominates cell cycle time.
- Recent live cell imaging contradicts this, showing correlated transit times in B lymphocytes.
Purpose of the Study:
- To investigate cell cycle phase length relationships in B lymphoma cell lines.
- To challenge the traditional model of cell cycle variation.
Main Methods:
- Direct live cell imaging of two B lymphoma cell lines.
- Analysis of cell cycle phase transit times (G1 and S/G2/M).
Main Results:
- Transformed B lymphoma cells exhibit a short G1 phase with minimal correlation to S/G2/M phase duration.
- The majority of total division time variation occurs in the S/G2/M phases.
- Models reversing the source of variation (G1 deterministic, S/G2/M variable) fit the data.
Conclusions:
- Shortened G1 and uncoupled cell cycle phases may characterize lymphocyte transformation.
- This phenomenon could serve as a phenotypic marker for cancer evolution.
- Modified cell cycle models better describe transformed lymphocyte behavior.
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