A stochastic vs deterministic perspective on the timing of cellular events

L Ham, MA Coomer, K Öcal, R Grima… - Nature …, 2024 - nature.com
Cells are the fundamental units of life, and like all life forms, they change over time. Changes
in cell state are driven by molecular processes; of these many are initiated when molecule …

Frequency-dependent modulation of stochasticity in postsynaptic neuron firing times

Z Vahdat, A Singh - 2022 IEEE 61st Conference on Decision …, 2022 - ieeexplore.ieee.org
Action potential (AP)-triggered neurotransmitter release forms the key basis of inter-neuronal
communication. We present a stochastic hybrid system model that captures the release of …

Optimizing precision in cellular clocks through self-regulated accumulation of molecules

S Rezaee, C Nieto, A Singh - 2023 27th International …, 2023 - ieeexplore.ieee.org
The timing of cellular events is often determined by the instant when the level of a chemical
species crosses a threshold from an initial value of zero. To attenuate the inherent random …

Threshold-crossing time statistics for size-dependent gene expression in growing cells

C Nieto, KR Ghusinga… - 2022 American …, 2022 - ieeexplore.ieee.org
Many intracellular events trigger upon attaining critical concentrations of their corresponding
regulatory proteins. How cells ensure precision in the timing of these events is a …

Mixed-feedback architectures for precise event timing through stochastic accumulation of biomolecules

S Rezaee, C Nieto, A Singh - bioRxiv, 2023 - biorxiv.org
The timing of biochemical events is often determined by the accumulation of a protein or
chemical species to a critical threshold level. In a stochastic model, we define event timing …

Feedback strategies for threshold crossing of protein levels at a prescribed time

C Nieto, KR Ghusinga, A Singh - 2022 30th Mediterranean …, 2022 - ieeexplore.ieee.org
The timing of diverse cellular processes is based on the instant when the concentration of
regulatory proteins crosses a critical threshold level. Hence, noise mechanisms inherent to …

Limits on inferring gene regulatory networks subjected to different noise mechanisms

M Saint-Antoine, A Singh - bioRxiv, 2023 - biorxiv.org
One of the most difficult and pressing problems in computational cell biology is the inference
of gene regulatory network structure from transcriptomic data. Benchmarking network …

Stochastic analysis of frequency bandwidth and noise attenuation in neurotransmission

Z Vahdat, A Singh - bioRxiv, 2022 - biorxiv.org
Action potential (AP)-triggered neurotransmitter release forms the key basis of inter-neuronal
communication. We present a stochastic hybrid system model that captures the release of …

The impact of decoys on a genetic oscillator based on coupled positive-negative feedbacks

Z Zhang, S Dey, A Singh - IFAC-PapersOnLine, 2022 - Elsevier
Within cells, transcription factors (TFs) bind to a wide range of nonspecific genomic sites in
addition to their target sites. Binding to such high affinity “decoys” has been shown to …

Regulatory strategies to schedule threshold crossing of protein levels at a prescribed time

C Nieto, KR Ghusinga, A Singh - bioRxiv, 2022 - biorxiv.org
The timing of diverse cellular processes is based on the instant when the concentration of
regulatory proteins crosses a critical threshold level. Hence, noise mechanisms inherent to …