Abstract
Background: In recent years, targeted therapy combined with traditional chemoradiotherapy
and surgery has brought new opportunities for cancer treatment. However, the complex
characteristics of cancer, such as heterogeneity and diversity, limit the clinical success of targeted
drugs. Discovering of new cancer targets and deepening the understanding of their functional mechanisms
will bring additional promising application prospects for the research and development of
personalized cancer-targeted drugs.
Objectives: This study aimed to summarize the role of the Rho GTPase activating protein 9 (ARHGAP9)
gene in tumorigenesis and development to discover therapeutic targets for cancer in the future.
Methods: For this review, we collected patents from the databases of Espacenet and WIPO and articles
from PubMed that were related to the ARHGAP9 gene.
Results: Genetic/epigenetic variations and abnormal expression of the ARHGAP9 gene are closely
associated with a variety of diseases, including cancer. ARHGAP9 can inactivate Rho GTPases by
hydrolyzing GTP into GDP and regulate cancer cellular events, including proliferation, differentiation,
apoptosis, migration and invasion, by inhibiting JNK/ERK/p38 and PI3K/AKT signaling pathways.
In addition to reviewing these mechanisms, we assessed various patents on ARHGAP9 to determine
whether ARHGAP9 might be used as a predictive biomarker for diagnosis/prognosis evaluation
and a druggable target for cancer treatment.
Conclusion: In this review, the current knowledge of ARHGAP9 in cancer is summarized with an
emphasis on its molecular function, regulatory mechanism and disease implications. Its characterization
is crucial to understanding its important roles during different stages of cancer progression
and therapy as a predictive biomarker and/or target.
Keywords:
Cancer, Rho GTPase activating protein 9 (ARHGAP9), Rho GTPases, target, biomarker, treatment.
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