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Cancer cells evolve from multicellular to unicellular states, driving intratumoural heterogeneity (ITH). Understanding this evolution is key to developing targeted cancer therapies.

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Area of Science:

  • Oncology
  • Cell Biology
  • Evolutionary Biology

Background:

  • Cancer development involves a transition from multicellular to unicellular-like cell states.
  • This transition disrupts normal cellular regulation, leading to adaptable cancer cell subpopulations.
  • Intratumoural heterogeneity (ITH) arises from these diverse subpopulations, complicating treatment strategies.

Purpose of the Study:

  • To review the dynamics of the multicellular-to-unicellular shift in cancer.
  • To explore factors contributing to ITH and cancer evolution.
  • To highlight advanced technologies for single-cell and spatial tumor analysis.

Main Methods:

  • Review of existing literature on cancer cell evolution and ITH.
  • Discussion of genetic, non-genetic, and microenvironmental factors.
  • Examination of advancements in omics technologies (e.g., single-cell sequencing, spatial transcriptomics).

Main Results:

  • The shift to unicellular-like states promotes cancer cell adaptability and diversity.
  • Genetic and non-genetic factors, alongside the tumor microenvironment, are critical drivers of ITH.
  • Single-cell and spatial omics technologies provide unprecedented resolution for tumor analysis.

Conclusions:

  • Understanding the evolutionary dynamics from multicellularity to unicellularity is crucial for cancer research.
  • Detailed analysis of ITH at the single-cell and spatial levels can reveal cancer's diverse evolutionary paths.
  • This knowledge is essential for developing effective therapies targeting cancer evolution drivers.