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SMU1 Knockdown Suppresses Gastric Carcinoma Growth, Migration, and Invasion and Modulates the Cell Cycle

Meirui Qian1, Xue Liang1, Qingmei Zeng1,2

  • 1Department of Cell Biology, National Translational Science Center for Molecular Medicine, Fourth Military Medical University, Xi'an, China.

Cancer Control : Journal of the Moffitt Cancer Center
|September 5, 2024
PubMed
Abstract

Insights

SMU1 is upregulated in gastric cancer (GC) and promotes tumor progression by enhancing cell proliferation and migration. SMU1 may serve as a prognostic marker for GC, offering new diagnostic and treatment strategies.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • The role of SMU1 in DNA replication and RNA splicing is known, but its specific function in gastric cancer (GC) is unclear.
  • Investigating SMU1's oncogenic role in GC is crucial for developing new treatment and diagnostic approaches.

Purpose of the Study:

  • To elucidate the function and dysregulated mechanisms of SMU1 in gastric cancer.
  • To assess the potential of SMU1 as an oncogenic driver and prognostic marker in GC.

Main Methods:

  • Analyzed SMU1 expression in GC vs. normal tissues using TCGA and GEO databases.
  • Performed immunohistochemistry on 277 GC tissue samples.
  • Conducted in vitro and in vivo assays to evaluate the impact of SMU1 on GC cell proliferation, invasion, and migration.

Main Results:

  • SMU1 mRNA and protein levels were significantly upregulated in GC tissues.
  • High SMU1 expression correlated with poor GC prognosis and was an independent prognostic factor.
  • Elevated SMU1 enhanced GC cell proliferation, invasion, and migration; SMU1 suppression impeded GC progression by modulating the G1/S cell cycle checkpoint.

Conclusions:

  • SMU1 acts as a prognostic marker for GC progression by influencing cell proliferation via cell cycle activation.
  • Findings provide insights into GC understanding, diagnosis, and management.
Keywords:
SMU1cell cyclegastric cancerproliferation

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