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RHOA Therapeutic Targeting in Hematological Cancers
Juliana Carvalho Santos1, Núria Profitós-Pelejà1, Salvador Sánchez-Vinces2
1Lymphoma Translational Group, Josep Carreras Leukaemia Research Institute (IJC), 08916 Badalona, Spain.
Abstract:
Primarily identified as an important regulator of cytoskeletal dynamics, the small GTPase Ras homolog gene family member A (RHOA) has been implicated in the transduction of signals regulating a broad range of cellular functions such as cell survival, migration, adhesion and proliferation. Deregulated activity of RHOA has been linked to the growth, progression and metastasis of various cancer types. Recent cancer genome-wide sequencing studies have unveiled both RHOA gain and loss-of-function mutations in primary leukemia/lymphoma, suggesting that this GTPase may exert tumor-promoting or tumor-suppressive functions depending on the cellular context. Based on these observations, RHOA signaling represents an attractive therapeutic target for the development of selective anticancer strategies. In this review, we will summarize the molecular mechanisms underlying RHOA GTPase functions in immune regulation and in the development of hematological neoplasms and will discuss the current strategies aimed at modulating RHOA functions in these diseases.
Insights
Ras homolog gene family member A (RHOA) regulates cell functions and is implicated in cancer. Its dual role in leukemia/lymphoma suggests RHOA signaling as a therapeutic target for hematological neoplasms.
Area of Science:
- Molecular Biology
- Cell Biology
- Oncology
Background:
- Ras homolog gene family member A (RHOA), a small GTPase, is a key regulator of cytoskeletal dynamics.
- RHOA influences critical cellular processes including survival, migration, adhesion, and proliferation.
- Aberrant RHOA activity is associated with the development and metastasis of various cancers.
Purpose of the Study:
- To review the molecular mechanisms of RHOA GTPase in immune regulation.
- To explore RHOA's role in the pathogenesis of hematological neoplasms.
- To discuss current therapeutic strategies targeting RHOA in these diseases.
Main Methods:
- Review of existing literature on RHOA function in cellular processes.
- Analysis of recent cancer genome-wide sequencing data related to RHOA mutations in leukemia/lymphoma.
- Synthesis of information on RHOA signaling pathways and therapeutic interventions.
Main Results:
- RHOA mutations (both gain and loss-of-function) are found in primary leukemia/lymphoma.
- RHOA can exhibit context-dependent tumor-promoting or tumor-suppressive functions in hematological malignancies.
- RHOA signaling is a promising target for developing selective anticancer therapies.
Conclusions:
- RHOA plays a significant, context-dependent role in hematological neoplasms.
- Targeting RHOA signaling offers a potential therapeutic avenue for leukemia and lymphoma.
- Further research into RHOA modulation is warranted for effective cancer treatment.
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