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The RND1 Small GTPase: Main Functions and Emerging Role in Oncogenesis
Abstract
The Rho GTPase family can be classified into classic and atypical members. Classic members cycle between an inactive Guanosine DiPhosphate -bound state and an active Guanosine TriPhosphate-bound state. Atypical Rho GTPases, such as RND1, are predominantly in an active GTP-bound conformation. The role of classic members in oncogenesis has been the subject of numerous studies, while that of atypical members has been less explored. Besides the roles of RND1 in healthy tissues, recent data suggest that RND1 is involved in oncogenesis and response to cancer therapeutics. Here, we present the current knowledge on RND1 expression, subcellular localization, and functions in healthy tissues. Then, we review data showing that RND1 expression is dysregulated in tumors, the molecular mechanisms involved in this deregulation, and the role of RND1 in oncogenesis. For several aggressive tumors, RND1 presents the features of a tumor suppressor gene. In these tumors, low expression of RND1 is associated with a bad prognosis for the patients. Finally, we highlight that RND1 expression is induced by anticancer agents and modulates their response. Of note, RND1 mRNA levels in tumors could be used as a predictive marker of both patient prognosis and response to anticancer agents.
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![Figure 2 Structure of RND1 gene and mutational pattern in human tumors. The orange box is the lipid raft motif; the yellow boxes are the guanosine nucleotide binding sites; the pink box is Rho insert domain; the blue boxes are the switch domains. SI: Switch I; SII: Switch II. Mutation types and corresponding color codes are as follows: Black represents the missense mutations and green represents the nonsense mutations. The stars indicate the mutations for which the impact on the RND1 function has been studied [10].](/paper-figures/068e8833f3644ea5a991ac6b6ec0e537/the-rnd1-small-gtpase-main-functions-and-emerging-role-in-oncogenesis-figure-2.jpg)





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“RhoH is an unusual member of the Rho family of small GTP‐binding proteins in that it lacks GTPase activity. Since the RhoH protein is constantly bound by GTP, it is constitutively active and controlled predominantly by changes in quantitative expression.”
From Bimodal expression of RHOH during myelomonocytic differentiation: Implications for the expansion of AML differentiation therapy (2021) · cites this paper as [1]
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Cited by
Galiègue‐Zouitina, S., Fu, Q., Carton‐Latreche, C., Poret, N., Cheok, M., Leprêtre, F., Figeac, M., Quesnel, B., El Bouazzati, H., & Shelley, C. S. (2021) · eJHaem · doi:10.1002/jha2.128 · Cited by 7
Metadata
- Authors
- Mouly, L., Gilhodes, J., Lemarié, A., Cohen-Jonathan Moyal, E., Toulas, C., Favre, G., Sordet, O., & Monferran, S.
- Affiliations
- Cancer Research Center of Toulouse, INSERM UMR1037, 31037 Toulouse, France
- Institut Claudius Regaud, IUCT-O, 31059 Toulouse, France
- ORCID
- Lemarié, Anthony
- Venue
- International Journal of Molecular Sciences
- Publisher
- MDPI AG
- Published
- 2019-07-24
- Volume
- 20
- Issue
- 15
- Pages
- 3612
- ISSN
- 1422-0067
- PMC
- PMC6696182
- Cited by
- 19
- References
- 0
- Language
- en
- Funders
- Région Midi-Pyrénées INSERM (R14075BB)
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