RhoA Controls Retinoid Signaling by ROCK Dependent Regulation of Retinol Metabolism
Research output: Contribution to journal › Journal article › Research › peer-review
The ubiquitously expressed small GTPase RhoA is essential for embryonic development and mutated in different cancers. Functionally, it is well described as a regulator of the actin cytoskeleton, but its role in gene regulation is less understood. Using primary mouse keratinocytes with a deletion of the RhoA gene, we have now been exploring how the loss of RhoA affects gene expression. Performing transcription factor reporter assays, we found a significantly decreased activity of a RAR luciferase reporter in RhoA-null keratinocytes. Inhibition of the RhoA effector ROCK in control cells reproduced this phenotype. ATRA and retinal, but not retinol increased RAR reporter activity of keratinocytes with impaired RhoA/ROCK signalling, suggesting that retinol metabolism is regulated by RhoA/ROCK signalling. Furthermore a significant percentage of known ATRA target genes displayed altered expression in RhoA-null keratinocytes. These data reveal an unexpected link between the cytoskeletal regulator RhoA and retinoid signalling and uncover a novel pathway by which RhoA regulates gene expression.
Original language | English |
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Journal | Small GTPases |
Volume | 9 |
Issue number | 5 |
Pages (from-to) | 433–444 |
ISSN | 2154-1248 |
DOIs | |
Publication status | Published - 2018 |
Links
- https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5997168/pdf/ksgt-09-05-1248272.pdf
Final published version
ID: 167584482