Robust Network Topologies for Generating Switch-Like Cellular Responses
Author Information
Author(s): Shah Najaf A., Sarkar Casim A.
Primary Institution: University of Pennsylvania
Hypothesis
What are the network architectures that can yield robust switch-like behavior in cellular responses?
Conclusion
The study identifies that hybrid networks are the most robust in generating switch-like responses, while purely transcriptional networks are the least robust.
Supporting Evidence
- Hybrid networks can achieve up to 28% robustness in generating ultrasensitivity.
- Purely transcriptional networks are the most fragile, achieving only up to 3% robustness.
- Zero-order ultrasensitivity is a key mechanism for generating nonlinearity in switch-like responses.
- Robustness scores for bistability are significantly higher in hybrid networks compared to purely enzymatic or transcriptional networks.
Takeaway
This study looks at how certain network designs in cells can help them make clear decisions, like turning on or off, based on signals they receive.
Methodology
The researchers simulated all possible two- and three-component networks on random parameter sets to assess their robustness in generating ultrasensitivity and bistability.
Limitations
The study's findings are based on simplified models that may not capture all dynamics of biological systems.
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website