alexa Invasive Cell Fate Requires G1 Cell-Cycle Arrest and Histone Deacetylase-Mediated Changes in Gene Expression.
Molecular Biology

Molecular Biology

Journal of Cell Science & Therapy

Author(s): Matus DQ, Lohmer LL, Kelley LC, Schindler AJ, Kohrman AQ, , Matus DQ, Lohmer LL, Kelley LC, Schindler AJ, Kohrman AQ,

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Abstract Despite critical roles in development and cancer, the mechanisms that specify invasive cellular behavior are poorly understood. Through a screen of transcription factors in Caenorhabditis elegans, we identified G1 cell-cycle arrest as a precisely regulated requirement of the anchor cell (AC) invasion program. We show that the nuclear receptor nhr-67/tlx directs the AC into G1 arrest in part through regulation of the cyclin-dependent kinase inhibitor cki-1. Loss of nhr-67 resulted in non-invasive, mitotic ACs that failed to express matrix metalloproteinases or actin regulators and lack invadopodia, F-actin-rich membrane protrusions that facilitate invasion. We further show that G1 arrest is necessary for the histone deacetylase HDA-1, a key regulator of differentiation, to promote pro-invasive gene expression and invadopodia formation. Together, these results suggest that invasive cell fate requires G1 arrest and that strategies targeting both G1-arrested and actively cycling cells may be needed to halt metastatic cancer. Copyright © 2015 Elsevier Inc. All rights reserved.
This article was published in Dev Cell and referenced in Journal of Cell Science & Therapy

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