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Related Experiment Video

Updated: May 20, 2025

Author Spotlight: Shear Assay Protocol for the Determination of Single-Cell Material Properties
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In vivo targeted and deterministic single-cell malignant transformation.

Pierluigi Scerbo1,2, Benjamin Tisserand1, Marine Delagrange1,3

  • 1Laboratoire de Physique de l'Ecole Normale Supérieure LPENS, ENS, PSL Research University, CNRS, Sorbonne Université, Université de Paris, Paris, France.

Elife
|March 25, 2025
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Summary
This summary is machine-generated.

Scientists used optogenetics to trigger cancer in zebrafish brain cells by activating an oncogene and a reprogramming factor together. This controlled method supports the

Keywords:
Danio reriocancercancer biologyoptogeneticszebrafish

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Area of Science:

  • Cancer Biology
  • Developmental Biology
  • Genetics

Background:

  • Understanding the transition of normal cells to malignancy is crucial but experimentally challenging.
  • Previous theories on cancer initiation lacked robust experimental validation due to unpredictable cell transformation.

Purpose of the Study:

  • To develop a controlled experimental system to study cancer initiation from a single cell.
  • To investigate the synergistic effect of oncogene activation and reprogramming factors in tumor development.

Main Methods:

  • Utilized an optogenetic approach in zebrafish to permanently activate the KRASG12V oncogene in a single brain cell.
  • Transiently co-activated reprogramming factors (VENTX/NANOG/OCT4) in conjunction with the oncogene.
  • Observed tumor development over 6 days.

Main Results:

  • Permanent oncogene activation combined with transient reprogramming factor co-activation induced deterministic malignant transition.
  • A full-blown tumor reproducibly developed within 6 days from the manipulated single cell.

Conclusions:

  • The study provides a reliable method for inducing cancer from a single cell, enabling mechanistic studies.
  • Findings support the 'ground state theory of cancer initiation' and suggest 'short-range dispersal' precedes tumor growth.