LncRNA PCGEM1 Induces Ovarian Carcinoma Tumorigenesis and Progression Through RhoA Pathway

Area of Science:

• Oncology
• Molecular Biology
• Genetics

Background:

• Prostate cancer gene expression marker 1 (PCGEM1) is a long noncoding RNA (lncRNA).
• PCGEM1 is known to promote prostate cancer and osteoarthritis.
• Its role in epithelial ovarian cancer (EOC) was previously unknown.

Purpose of the Study:

• To investigate the role of PCGEM1 in epithelial ovarian cancer.
• To elucidate the molecular mechanisms underlying PCGEM1's function in EOC.

Main Methods:

• PCGEM1 expression was quantified in EOC and normal tissues using RT-PCR.
• In vitro studies involved PCGEM1 overexpression and downregulation in ovarian cancer cells.
• In vivo effects were assessed using a nude mouse xenograft model.

Main Results:

• PCGEM1 expression was significantly elevated in EOC tissues compared to normal tissues.
• Overexpression of PCGEM1 enhanced cancer cell proliferation, migration, and invasion while reducing apoptosis.
• PCGEM1 upregulated RhoA, YAP, MMP2, Bcl-xL, and P70S6K, promoting tumor growth in vivo.

Conclusions:

• PCGEM1 acts as an inducer in epithelial ovarian cancer tumorigenesis and progression.
• It functions by upregulating RhoA, which subsequently affects YAP, P70S6K, MMP2, and Bcl-xL expression.
• PCGEM1 represents a potential therapeutic target for ovarian cancer.