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Updated: Jul 17, 2026

Development and Maintenance of a Preclinical Patient Derived Tumor Xenograft Model for the Investigation of Novel Anti-Cancer Therapies
Published on: September 30, 2016
Rac signaling in tumorigenesis and as target for anticancer drug development
1Department of Biomedical Engineering, Pratt School of Engineering, Duke University, Durham, NC 27708, USA.
Abstract:
Rac GTPases are crucial signaling regulators in eukaryotic cells, acting downstream of many cell surface receptors. They play essential roles in diverse cellular functions including cytoskeleton dynamics, cell motility, cell survival and apoptosis. Their activities are controlled by a tightly regulated GDP/GTP cycle coupled with an alternation between cytoplasm and membrane compartments. Aberrant Rac signaling is found in some human cancers as a result of changes in the GTPase itself or in its regulation loops. This review highlights recent findings regarding the molecular and functional aspects of Rac that mediate tumorigenic transformation and metastasis. It also describes the cellular mechanisms that potentially explain the complex role of Rac in tumorigenesis. Finally, it discusses approaches for modulating Rac function as a potential anticancer strategy.
Insights
Rac GTPases regulate cell functions and are implicated in cancer. This review covers Rac
Area of Science:
- Molecular Biology
- Cell Biology
- Biochemistry
Background:
- Rac GTPases are key regulators of eukaryotic cell signaling, controlling functions like cytoskeleton dynamics and cell motility.
- Their activity is tightly controlled by a GDP/GTP cycle and localization between cellular compartments.
- Dysregulated Rac signaling is linked to human cancers, affecting tumorigenesis and metastasis.
Purpose of the Study:
- To review recent findings on the molecular and functional roles of Rac GTPases in cancer.
- To elucidate cellular mechanisms underlying Rac's complex role in tumorigenesis.
- To discuss potential therapeutic strategies targeting Rac function for cancer treatment.
Main Methods:
- Literature review of recent research on Rac GTPases in cancer.
- Analysis of molecular mechanisms of Rac signaling in tumorigenesis and metastasis.
- Exploration of therapeutic approaches targeting Rac pathways.
Main Results:
- Rac GTPases mediate tumorigenic transformation and metastasis through specific molecular and functional pathways.
- Cellular mechanisms involving Rac signaling contribute to the complex role of Rac in cancer development.
- Modulating Rac function presents a promising avenue for novel anticancer strategies.
Conclusions:
- Rac GTPases are critical players in cancer progression, influencing transformation and metastasis.
- Understanding Rac's intricate cellular roles is key to developing effective cancer therapies.
- Targeting Rac signaling pathways offers a potential strategy for future cancer treatments.
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