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Updated: Jan 19, 2026

Quantification of Filamentous Actin F-actin Puncta in Rat Cortical Neurons
Published on: February 10, 2016
When Hippo meets actin in the nucleus
Maria Chatzifrangkeskou1, Eric O'Neill1
1Department of Oncology, University of Oxford, Oxford, UK.
Abstract:
Nuclear actin is exported from the nucleus via the Exportin-6 (XPO6)/RAN GTPase complex. We recently identified that RASSF1A and the hippo pathway kinase Mammalian STE20-like protein kinase 2 (MST2) play a pivotal role in nucleocytoplasmic shuttling of actin by regulating the association of XPO6 with RAN GTPase. Importantly, loss of Ras association domain family 1A (RASSF1A) and hippo signaling in cancer cells highlights a key mechanism by which nuclear actin promotes tumorigenesis.
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