AI Insight
This study examines how cell division affects decision-making in genetic toggle switches, which are regulatory networks that control cellular fate through multistable dynamics. The researchers developed analytical separatrices for a Boolean toggle switch model and demonstrated that cell division can cause cells with identical initial conditions to adopt different stable states. They identified a specific region where neglecting cell division leads to incorrect predictions about cellular fate decisions, showing that division fundamentally alters the boundaries between different fate outcomes in multistable regulatory networks.
Why it matters
Understanding how cell division influences genetic switches is crucial for predicting cellular behavior in development, disease, and synthetic biology applications. This work could improve the design of engineered genetic circuits and enhance our ability to control cellular fate decisions in therapeutic contexts.
arXiv:2606.16803v2 Announce Type: replace
Abstract: Gene regulatory networks govern cellular fate decisions through multistable dynamics. The genetic toggle switch is a canonical model of such behaviour; yet, the impact of cell division on its dynamics remains poorly understood. We derive analytical separatrices for a simplified Boolean toggle switch with and without division. We show that division can redirect trajectories with identical initial conditions to opposing stable states, and we define a region of disagreement where fate decisions are predicted incorrectly if division is neglected. Our results imply that division can fundamentally reshape fate boundaries in multistable regulatory networks.
Source: Cell Division Changes Fate Decisions in a Genetic Toggle Switch