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Synthetic Biology Review. A Synthetic Oscillatory Network of Transcriptional Regulators – ‘The Repressilator’. Elowitz, M.B. & Leibler, S. Nature, vol. 403, 20 th January 2000. The Basics. The Good Results. ...and the Other Results. ◄ Limitations (c):
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Synthetic Biology Review A Synthetic Oscillatory Network of Transcriptional Regulators – ‘The Repressilator’ Elowitz, M.B. & Leibler, S. Nature, vol. 403, 20th January 2000
...and the Other Results • ◄ Limitations (c): • Accumulation of GFP as a result of limited elimination • Green – oscillation with a reduced period • Blue – several periods skipped entirely • ◄ Controls (f): • Cells containing only the reporter plasmid Stochastic effects…
Conclusions & Extensions • ◄ iGEM Solution: • Novel approach based on Lotka-Volterra model of predator-prey interaction • Constitutively repressed ‘predator’ cell is anti-repressed by product of ‘prey’ cell • Prey cell is repressed by product of predator cell… • Thus a stable oscillation cycle is built up Cell A A Lux I Plux Lux R A Cell B A A LuxR AiiA LuxR aiiA Plux Lux R
The Network Model Deterministic Continuous / Stochastic Discrete Continuous model: