Rho Small GTPase Family in Androgen-Regulated Prostate Cancer Progression and Metastasis

Area of Science:

• Molecular Biology
• Oncology
• Cell Signaling

Background:

• Rho small GTPases (RSGs) are key regulators of cell migration and metastasis.
• RSGs are categorized into classical and atypical subfamilies with distinct regulatory mechanisms.
• Metastatic prostate cancer (mPCa) progression is heavily influenced by the androgen receptor (AR).

Purpose of the Study:

• To review the roles of RSGs in metastatic prostate cancer (mPCa).
• To elucidate the interactions between RSGs and the androgen receptor (AR) in mPCa.

Main Methods:

• Literature review of studies on RSGs in mPCa.
• Analysis of the interplay between RSGs and AR signaling pathways.

Main Results:

• Classical RSGs generally promote metastasis, while atypical RSGs tend to inhibit it, with context-dependent exceptions (e.g., RhoB).
• The AR influences RSG expression and function, and RSGs reciprocally regulate AR activity.
• Non-genomic interactions between RSGs and membrane-localized AR (mAR) exist, independent of AR inhibitors.

Conclusions:

• Targeting RSGs, in addition to AR inhibitors, is a promising strategy to combat mPCa progression.
• Understanding the complex interplay between RSGs and AR is essential for developing novel therapeutic approaches.