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 …

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 …

Assessing markovian and delay models for single-nucleus RNA sequencing

G Gorin, S Yoshida, L Pachter - Bulletin of Mathematical Biology, 2023 - Springer
The serial nature of reactions involved in the RNA life-cycle motivates the incorporation of
delays in models of transcriptional dynamics. The models couple a transcriptional process to …

Exact solution of a three-stage model of stochastic gene expression including cell-cycle dynamics

Y Wang, Z Yu, R Grima, Z Cao - The Journal of Chemical Physics, 2023 - pubs.aip.org
The classical three-stage model of stochastic gene expression predicts the statistics of
single cell mRNA and protein number fluctuations as a function of the rates of promoter …

[HTML][HTML] Biophysically interpretable inference of cell types from multimodal sequencing data

T Chari, G Gorin, L Pachter - Biorxiv, 2023 - ncbi.nlm.nih.gov
Multimodal, single-cell genomics technologies enable simultaneous capture of multiple
facets of DNA and RNA processing in the cell. This creates opportunities for transcriptome …

The minimal intrinsic stochasticity of constitutively expressed eukaryotic genes is sub-Poissonian

DE Weidemann, J Holehouse, A Singh, R Grima… - Science …, 2023 - science.org
Gene expression inherently gives rise to stochastic variation (“noise”) in the production of
gene products. Minimizing noise is crucial for ensuring reliable cellular functions. However …

Stochastic threshold in cell size control

L Luo, Y Bai, X Fu - Physical Review Research, 2023 - APS
Classic models of cell size control consider that cells divide when reaching a threshold, eg,
size, age, or size extension. The molecular basis of the threshold involves multiple layers of …

[HTML][HTML] Analysis of a detailed multi-stage model of stochastic gene expression using queueing theory and model reduction

M Ma, J Szavits-Nossan, A Singh, R Grima - Mathematical biosciences, 2024 - Elsevier
We introduce a biologically detailed, stochastic model of gene expression describing the
multiple rate-limiting steps of transcription, nuclear pre-mRNA processing, nuclear mRNA …

Joint distribution of protein concentration and cell volume coupled by feedback in dilution

I Zabaikina, P Bokes, A Singh - International Conference on Computational …, 2023 - Springer
We consider a protein that negatively regulates the rate with which a cell grows. Since less
growth means less protein dilution, this mechanism forms a positive feedback loop on the …

[PDF][PDF] Systematic biases in transcriptional parameters inferred from single-cell snapshot data

R Grima, PM Esmenjaud - bioRxiv, 2023 - researchgate.net
The snapshot distribution of mRNA counts per cell can be readily measured using single
molecule FISH or single-cell RNA sequencing. These distributions are often fit to the steady …