YAP-TEAD1 control of cytoskeleton dynamics and intracellular tension guides human pluripotent stem cell mesoderm specification
Pagliari Stefania; Grassi Gabriele; Vrbsky Jan; Pompeiano Antonio; Kytyr Dan; Mozetic Pamela; Vinarsky Vladimir; Perestrelo Ana Rubina; Martino Fabiana; Zdrahal Zbyněk; Caluori Guido; Rainer Alberto; Forte Giancarlo; De La Cruz Jorge Oliver; Ranjani Sri Ganji; Sampaolesi Maurilio; Skladal Petr; Zancla Andrea
YAP-TEAD1 control of cytoskeleton dynamics and intracellular tension guides human pluripotent stem cell mesoderm specification
Pagliari Stefania
Grassi Gabriele
Vrbsky Jan
Pompeiano Antonio
Kytyr Dan
Mozetic Pamela
Vinarsky Vladimir
Perestrelo Ana Rubina
Martino Fabiana
Zdrahal Zbyněk
Caluori Guido
Rainer Alberto
Forte Giancarlo
De La Cruz Jorge Oliver
Ranjani Sri Ganji
Sampaolesi Maurilio
Skladal Petr
Zancla Andrea
SPRINGERNATURE
Julkaisun pysyvä osoite on:
https://urn.fi/URN:NBN:fi-fe2021042713808
https://urn.fi/URN:NBN:fi-fe2021042713808
Tiivistelmä
The tight regulation of cytoskeleton dynamics is required for a number of cellular processes, including migration, division and differentiation. YAP-TEAD respond to cell-cell interaction and to substrate mechanics and, among their downstream effects, prompt focal adhesion (FA) gene transcription, thus contributing to FA-cytoskeleton stability. This activity is key to the definition of adult cell mechanical properties and function. Its regulation and role in pluripotent stem cells are poorly understood. Human PSCs display a sustained basal YAP-driven transcriptional activity despite they grow in very dense colonies, indicating these cells are insensitive to contact inhibition. PSC inability to perceive cell-cell interactions can be restored by tampering with Tankyrase enzyme, thus favouring AMOT inhibition of YAP function. YAP-TEAD complex is promptly inactivated when germ layers are specified, and this event is needed to adjust PSC mechanical properties in response to physiological substrate stiffness. By providing evidence that YAP-TEAD1 complex targets key genes encoding for proteins involved in cytoskeleton dynamics, we suggest that substrate mechanics can direct PSC specification by influencing cytoskeleton arrangement and intracellular tension. We propose an aberrant activation of YAP-TEAD1 axis alters PSC potency by inhibiting cytoskeleton dynamics, thus paralyzing the changes in shape requested for the acquisition of the given phenotype.
Kokoelmat
- Rinnakkaistallenteet [19207]