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Cellular interactions constrain tumor growth.

Jeffrey West1, Paul K Newton2,3

  • 1Integrated Mathematical Oncology, Moffitt Cancer Center, Tampa, FL 33612; jeffrey.west@moffitt.org.

Proceedings of the National Academy of Sciences of the United States of America
|January 25, 2019
PubMed
Summary
This summary is machine-generated.

Tumor growth laws emerge from the functional coupling of cellular states within a tumor. Understanding these cellular interactions, not just heterogeneity, is key to predicting macroscopic tumor characteristics.

Keywords:
cell couplingstatistical mechanicstumor growth lawstumor heterogeneity

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Area of Science:

  • Oncology
  • Statistical Mechanics
  • Systems Biology

Background:

  • Tumors comprise diverse cell types interacting within a microenvironment.
  • While cell signaling and behavior are known, macroscopic tumor growth laws are poorly understood.
  • The influence of microenvironmental constraints on tumor growth dynamics requires further investigation.

Purpose of the Study:

  • To develop a statistical mechanics framework for understanding tumor growth laws.
  • To connect cellular-level states and their correlations to macroscopic tumor growth.
  • To elucidate how functional coupling at the cellular level dictates tumor characteristics.

Main Methods:

  • Utilized a statistical mechanics approach.
  • Focused on the number of possible states each cell can occupy.
  • Analyzed how assumptions on state correlations influence macroscopic growth laws.

Main Results:

  • Demonstrated that different assumptions on cellular state correlations yield various macroscopic tumor growth laws.
  • Showed that the functional coupling of cellular states is a critical determinant of tumor growth.
  • Provided a theoretical basis for diverse tumor growth models found in literature.

Conclusions:

  • Macroscopic tumor growth laws are determined by the functional coupling of cellular states.
  • Cellular heterogeneity's role in tumor growth is better understood by focusing on functional coupling.
  • This framework offers new insights into the fundamental drivers of tumor progression.