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Updated: Jan 25, 2026

Predictive Immune Modeling of Solid Tumors
Published on: February 25, 2020
RAC1 Takes the Lead in Solid Tumors
Pradip De1,2, Jennifer Carlson Aske3, Nandini Dey4,5
1Translational Oncology Laboratory, Avera Cancer Institute, Sioux Falls, SD 57105, USA. Pradip.De@avera.org.
Abstract:
Three GTPases, RAC, RHO, and Cdc42, play essential roles in coordinating many cellular functions during embryonic development, both in healthy cells and in disease conditions like cancers. We have presented patterns of distribution of the frequency of RAC1-alteration(s) in cancers as obtained from cBioPortal. With this background data, we have interrogated the various functions of RAC1 in tumors, including proliferation, metastasis-associated phenotypes, and drug-resistance with a special emphasis on solid tumors in adults. We have reviewed the activation and regulation of RAC1 functions on the basis of its sub-cellular localization in tumor cells. Our review focuses on the role of RAC1 in cancers and summarizes the regulatory mechanisms, inhibitory efficacy, and the anticancer potential of RAC1-PAK targeting agents.
Insights
RAC1, a key GTPase, is crucial in cancer development, affecting cell proliferation, metastasis, and drug resistance. Targeting RAC1-PAK pathways shows promise for novel cancer therapies.
Area of Science:
- Molecular biology
- Cellular signaling
- Oncology
Background:
- GTPases RAC, RHO, and Cdc42 are vital for cellular functions in development and disease.
- RAC1 alterations are frequent in various cancers.
Purpose of the Study:
- To investigate RAC1 functions in adult solid tumors, focusing on proliferation, metastasis, and drug resistance.
- To review RAC1 regulation, activation, and its potential as a therapeutic target in cancer.
Main Methods:
- Analysis of RAC1 alteration frequencies using cBioPortal data.
- Review of literature on RAC1 sub-cellular localization, regulation, and function in tumors.
Main Results:
- RAC1 significantly influences cancer cell proliferation, metastasis, and drug resistance.
- RAC1's sub-cellular localization dictates its regulatory mechanisms and functions in tumor cells.
Conclusions:
- RAC1 is a critical player in oncogenesis, particularly in adult solid tumors.
- Targeting RAC1-PAK pathways presents a promising strategy for developing novel anti-cancer agents.
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