POM121 Drives Gastric Cancer Progression via the mTOR/p70S6K Signaling Axis

Area of Science:

• Oncology
• Molecular Biology
• Cancer Research

Background:

• Gastric cancer (GC) is a significant global health concern, contributing to high cancer mortality rates.
• Understanding the molecular mechanisms driving GC progression is crucial for developing effective treatments.

Purpose of the Study:

• To investigate the role of POM121 in gastric cancer.
• To elucidate the involvement of POM121 in signaling pathways that promote tumor progression.

Main Methods:

• Analyzed POM121 expression in GC cell lines and clinical samples.
• Performed functional assays including proliferation, migration, and soft agar colony formation upon POM121 knockdown.
• Utilized proteomic profiling and in vivo xenograft models to assess downstream signaling and tumorigenicity.
• Examined p70S6 kinase phosphorylation to identify affected signaling pathways.

Main Results:

• POM121 expression was significantly upregulated in GC tissues and cell lines.
• POM121 silencing inhibited GC cell proliferation, migration, anchorage-independent growth, and in vivo tumor formation.
• Suppression of POM121 led to impaired mTOR-p70S6K signaling, evidenced by reduced p70S6K phosphorylation.

Conclusions:

• POM121 acts as an oncogene promoting gastric cancer progression.
• POM121 enhances proliferative and invasive phenotypes via p70S6 kinase-mediated signaling.
• POM121 represents a potential prognostic biomarker and therapeutic target for gastric cancer.