Concentration fluctuations in growing and dividing cells: Insights into the emergence of concentration homeostasis

C Jia, A Singh, R Grima - PLoS computational biology, 2022 - journals.plos.org
Intracellular reaction rates depend on concentrations and hence their levels are often
regulated. However classical models of stochastic gene expression lack a cell size …

Coupling gene expression dynamics to cell size dynamics and cell cycle events: Exact and approximate solutions of the extended telegraph model

C Jia, R Grima - Iscience, 2023 - cell.com
The standard model describing the fluctuations of mRNA numbers in single cells is the
telegraph model which includes synthesis and degradation of mRNA, and switching of the …

Frequency domain analysis of fluctuations of mRNA and protein copy numbers within a cell lineage: theory and experimental validation

C Jia, R Grima - Physical Review X, 2021 - APS
The stochasticity of gene expression is manifested in the fluctuations of messenger
ribonucleic acid and protein copy numbers within a cell lineage over time. While data of this …

Small protein number effects in stochastic models of autoregulated bursty gene expression

C Jia, R Grima - The Journal of chemical physics, 2020 - pubs.aip.org
A stochastic model of autoregulated bursty gene expression by Kumar et al.[Phys. Rev. Lett.
113, 268105 (2014)] has been exactly solved in steady-state conditions under the implicit …

[HTML][HTML] Solving the time-dependent protein distributions for autoregulated bursty gene expression using spectral decomposition

B Wu, J Holehouse, R Grima, C Jia - The Journal of Chemical Physics, 2024 - pubs.aip.org
In this study, we obtain an exact time-dependent solution of the chemical master equation
(CME) of an extension of the two-state telegraph model describing bursty or non-bursty …

Poisson representation: a bridge between discrete and continuous models of stochastic gene regulatory networks

X Wang, Y Li, C Jia - Journal of the Royal Society …, 2023 - royalsocietypublishing.org
Stochastic gene expression dynamics can be modelled either discretely or continuously.
Previous studies have shown that the mRNA or protein number distributions of some simple …

Analytical time-dependent distributions for gene expression models with complex promoter switching mechanisms

C Jia, Y Li - SIAM Journal on Applied Mathematics, 2023 - SIAM
Classical gene expression models assume exponential switching time distributions between
the active and inactive promoter states. However, recent experiments have shown that many …

Dynamical phase diagram of an auto-regulating gene in fast switching conditions

C Jia, R Grima - The Journal of chemical physics, 2020 - pubs.aip.org
While the steady-state behavior of stochastic gene expression with auto-regulation has been
extensively studied, its time-dependent behavior has received much less attention. Here …

Single-cell stochastic gene expression kinetics with coupled positive-plus-negative feedback

C Jia, LY Wang, GG Yin, MQ Zhang - Physical Review E, 2019 - APS
Here we investigate single-cell stochastic gene expression kinetics in a minimal coupled
gene circuit with positive-plus-negative feedback. A triphasic stochastic bifurcation is …

Kinetic foundation of the zero-inflated negative binomial model for single-cell RNA sequencing data

C Jia - SIAM Journal on Applied Mathematics, 2020 - SIAM
Single-cell RNA sequencing data have complex features such as dropout events,
overdispersion, and high-magnitude outliers, resulting in complicated probability …