Abstract
Rho GTPases are highly conserved proteins that play critical roles in many cellular processes including actin dynamics, vesicular trafficking, gene transcription, cell-cycle progression, and cell adhesion. The main mode of regulation of Rho GTPases is through guanine nucleotide binding (cycling between an active GTP-bound form and an inactive GDP-bound form), but transcriptional, post-transcriptional, and post-translational modes of Rho regulation have also been described. In the present review, we summarize recent progress on the mechanisms that control the expression of the three members of the Rho-like subfamily (RhoA, RhoB, and RhoC) at the level of gene transcription as well as their post-transcriptional regulation by microRNAs. We also discuss the progress made in deciphering the mechanisms of cross-talk between Rho proteins and the transforming growth factor β signaling pathway and their implications for the pathogenesis of human diseases such as cancer metastasis and fibrosis.
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Abbreviations
- ATF-1:
-
Activating transcription factor 1
- BSMs:
-
Bronchial smooth muscles
- PKG:
-
cGMP-dependent protein kinase
- EC:
-
Endometrial carcinoma
- EMT:
-
Epithelial-to-mesenchymal transition
- ERK:
-
Extracellular signal-regulated kinase
- FTIs:
-
Farnesyltransferase inhibitors
- GGTIs:
-
Geranylgeranyltransferase I inhibitors
- GAPs:
-
GTPase-activating proteins
- GDIs:
-
Guanosine nucleotide dissociation inhibitors
- GEFs:
-
Guanosine nucleotide exchange factors
- HCC:
-
Hepatocellular carcinoma
- HDAC1:
-
Histone deacetylase 1
- HOXD10:
-
Homeobox D10
- HIF:
-
Hypoxia inducible factor
- IL-13:
-
Interleukin 13
- miRNAs:
-
MicroRNAs
- MAPK:
-
Mitogen-activated protein kinase
- Miz1:
-
Myc-interacting zinc finger protein 1
- NO:
-
Nitric oxide
- NF-κB:
-
Nuclear factor kappa B
- NF-Y:
-
Nuclear factor Y
- PARP-1:
-
Poly(ADP-ribose) polymerase-1
- PMA:
-
Phorbol-12-myristyl-13-acetate
- ROS:
-
Reactive oxygen species
- STAT6:
-
Signal transducer and activator of transcription 6
- siRNAs:
-
Small interfering RNAs
- Skp2:
-
S-phase kinase-associated protein 2
- SDF-1:
-
Stromal cell-derived factor-1
- TGFβ:
-
Transforming growth factor β
- TNFα:
-
Tumor necrosis factor α
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Acknowledgements
This work was supported by a Grant from the Hellenic Ministry for Education, Research and Religious Affairs (THALIS MIS 380334) to DK and CS. EN and ML were supported by a doctoral fellowship from IKY-Siemens Research Grants.
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Nomikou, E., Livitsanou, M., Stournaras, C. et al. Transcriptional and post-transcriptional regulation of the genes encoding the small GTPases RhoA, RhoB, and RhoC: implications for the pathogenesis of human diseases. Cell. Mol. Life Sci. 75, 2111–2124 (2018). https://doi.org/10.1007/s00018-018-2787-y
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DOI: https://doi.org/10.1007/s00018-018-2787-y