ARTseq-FISH reveals position-dependent differences in gene expression of micropatterned mESCs

Xinyu Hu, Bob van Sluijs, Óscar García-Blay, Yury Stepanov, Koen Rietrae, Wilhelm T. S. Huck () and Maike M. K. Hansen ()
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Xinyu Hu: Radboud University
Bob van Sluijs: Radboud University
Óscar García-Blay: Radboud University
Yury Stepanov: Radboud University
Koen Rietrae: Radboud University
Wilhelm T. S. Huck: Radboud University
Maike M. K. Hansen: Radboud University

Nature Communications, 2024, vol. 15, issue 1, 1-17

Abstract: Abstract Differences in gene-expression profiles between individual cells can give rise to distinct cell fate decisions. Yet how localisation on a micropattern impacts initial changes in mRNA, protein, and phosphoprotein abundance remains unclear. To identify the effect of cellular position on gene expression, we developed a scalable antibody and mRNA targeting sequential fluorescence in situ hybridisation (ARTseq-FISH) method capable of simultaneously profiling mRNAs, proteins, and phosphoproteins in single cells. We studied 67 (phospho-)protein and mRNA targets in individual mouse embryonic stem cells (mESCs) cultured on circular micropatterns. ARTseq-FISH reveals relative changes in both abundance and localisation of mRNAs and (phospho-)proteins during the first 48 hours of exit from pluripotency. We confirm these changes by conventional immunofluorescence and time-lapse microscopy. Chemical labelling, immunofluorescence, and single-cell time-lapse microscopy further show that cells closer to the edge of the micropattern exhibit increased proliferation compared to cells at the centre. Together these data suggest that while gene expression is still highly heterogeneous position-dependent differences in mRNA and protein levels emerge as early as 12 hours after LIF withdrawal.

Date: 2024
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DOI: 10.1038/s41467-024-48107-5

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