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bioRxiv · 10.1101/539049

Spatial resets modulate YAP-dependent transcription

Franklin, J. M.·Ghosh, R. P.·Shi, Q.·Liphardt, J. T.
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Abstract

Yes-associated protein 1 (YAP) is a transcriptional regulator with critical roles in mechanotransduction, organ size control, and regeneration. Here, using new tools for real-time visualization of native YAP and target gene transcription dynamics, we show that a cycle of fast exodus of nuclear YAP to the cytoplasm followed by fast reentry to the nucleus ("localization-resets") activates YAP target genes. These "resets" could be induced by calcium signaling, modulation of actomyosin contractility, or mitosis. Using nascent-transcription reporter knock-ins of YAP target genes, we observed a strict association between these resets and downstream transcription. Oncogenically-transformed transformed cell lines lacked localization-resets and instead showed dramatically elevated rates of nucleocytoplasmic shuttling of YAP, suggesting an escape from compartmentalization-based control. The single-cell localization and transcription traces suggest that YAP activity is not a simple linear function of nuclear enrichment and point to a new model of transcriptional activation based on nucleocytoplasmic exchange properties of YAP.

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Franklin, J. M., Ghosh, R. P., Shi, Q., Liphardt, J. T.. 2019-02-03. Spatial resets modulate YAP-dependent transcription. https://doi.org/10.1101/539049

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