Holimap: an accurate and efficient method for solving stochastic gene network dynamics

C Jia, R Grima - Nature Communications, 2024 - nature.com
Gene-gene interactions are crucial to the control of sub-cellular processes but our
understanding of their stochastic dynamics is hindered by the lack of simulation methods …

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 …

Approximating solutions of the chemical master equation using neural networks

A Sukys, K Öcal, R Grima - Iscience, 2022 - cell.com
Summary The Chemical Master Equation (CME) provides an accurate description of
stochastic biochemical reaction networks in well-mixed conditions, but it cannot be solved …

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 …

Gene expression model inference from snapshot RNA data using Bayesian non-parametrics

Z Kilic, M Schweiger, C Moyer, D Shepherd… - Nature computational …, 2023 - nature.com
Gene expression models, which are key towards understanding cellular regulatory
response, underlie observations of single-cell transcriptional dynamics. Although RNA …

Systematic inference identifies a major source of heterogeneity in cell signaling dynamics: The rate-limiting step number

DW Kim, H Hong, JK Kim - Science advances, 2022 - science.org
Identifying the sources of cell-to-cell variability in signaling dynamics is essential to
understand drug response variability and develop effective therapeutics. However, it is …

Quantifying and correcting bias in transcriptional parameter inference from single-cell data

R Grima, PM Esmenjaud - Biophysical Journal, 2024 - cell.com
The snapshot distribution of mRNA counts per cell can be measured using single-molecule
fluorescence in situ hybridization or single-cell RNA sequencing. These distributions are …

Cell size distribution of lineage data: analytic results and parameter inference

C Jia, A Singh, R Grima - Iscience, 2021 - cell.com
Recent advances in single-cell technologies have enabled time-resolved measurements of
the cell size over several cell cycles. These data encode information on how cells correct …

[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 …

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 …