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Temporal dose inversion properties of adaptive biomolecular circuits
Eiji Nakamura1, Franco Blanchini2, Giulia Giordano3
1Department of Mechanical and Aerospace Engineering, University of California, Los Angeles, USA.
Biorxiv : the Preprint Server for Biology
|February 24, 2025
Summary
Cells can transform transient signals into lasting effects using adaptive molecular circuits. This temporal dose inversion, observed in feedback and feedforward loops, is key to cell fate decisions.
Area of Science:
- Cellular biology
- Systems biology
- Biophysics
Background:
- Cells process information using temporal features of molecular signals.
- Dynamic signal patterns profoundly influence cell fate.
- Understanding signal conversion is crucial for cell biology.
Purpose of the Study:
- Investigate how molecular pathways convert temporal signal features.
- Focus on transient-to-persistent signal conversion (temporal dose inversion).
- Analyze adaptive circuits for signal processing capabilities.
Main Methods:
- Theoretical analysis of molecular circuit motifs.
- Modeling of incoherent feedforward loops (IFFLs) and negative feedback loops (NFLs).
- Examination of enzymatic signaling and gene regulatory networks.
Main Results:
- Adaptive circuits, including IFFLs and NFLs, can achieve temporal dose inversion.
- Parametric conditions for temporal dose inversion were identified.
- Time delays and signal intensities in generalized IFFLs are critical determinants.
Conclusions:
- Adaptive circuits function as sophisticated signal processing units.
- Temporal dose inversion is a mechanism for converting signal dynamics.
- This study enhances understanding of adaptive circuits in biological systems.
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