Optogenetics Breakthrough: Light-Controlled Enzyme Activation Revolutionizes Cellular Movement Studies

March 24, 2025
Optogenetics Breakthrough: Light-Controlled Enzyme Activation Revolutionizes Cellular Movement Studies
  • The collaborative study involved researchers from MIT and several international institutions, including Ludwig Maximilian University of Munich and Saarland University.

  • Senior author Nikta Fakhri emphasized that this research uncovers fundamental principles of how living systems self-organize and evolve their shapes.

  • Focusing on starfish cells, which are ideal for studying cell behavior and development due to their unique symmetry transformations, the research provides valuable insights.

  • Fakhri's team has previously explored the dynamics of cellular growth and symmetry using starfish as a model organism, examining how cells organize during development.

  • Researchers have developed a groundbreaking method using optogenetics to activate the GEF enzyme in response to light, enabling precise control over cellular movements.

  • The research shows that increasing GEF concentration resulted in heightened contractions, prompting further exploration of controlling cell movements through this molecular circuit.

  • The findings, set to be published in Nature Physics, offer a new tool for manipulating cell shapes, with promising applications in synthetic biology and medicine.

  • The theoretical framework developed from their observations may guide future applications in synthetic biology, including the creation of programmable cells for biomedical uses.

  • Previous studies indicated that varying GEF concentrations could control cell contractions, leading researchers to investigate optogenetics for more precise manipulation.

  • This innovative approach demonstrates that even a small light stimulus can elicit a significant mechanical response in cells, shedding light on cellular remodeling processes essential for development and healing.

  • The study reveals a complex 'circuitry' within starfish egg cells that governs their mechanics through the activation of the Rho protein by the GEF enzyme.

  • Supported by the Sloan Foundation and the National Science Foundation, this research highlights its importance in the field of synthetic biology.

Summary based on 4 sources


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MIT scientists engineer starfish cells to shape-shift in response to light

MIT News | Massachusetts Institute of Technology • Mar 24, 2025

MIT scientists engineer starfish cells to shape-shift in response to light

MIT's engineered starfish cells shape-shift in response to light

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