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Knockdown of SPOCK1 Inhibits the Proliferation and Invasion in Colorectal Cancer Cells by Suppressing the PI3K/Akt

Ping Zhao1, Hai-Tao Guan, Zhi-Jun Dai

  • 1Department of Gastroenterology, the Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, P.R. China.

Oncology Research
|March 11, 2017
PubMed

Insights

Sparc/osteonectin, cwcv, and kazal-like domains proteoglycan 1 (SPOCK1) is overexpressed in colorectal cancer (CRC). Silencing SPOCK1 inhibits CRC cell proliferation and invasion, suggesting it as a potential therapeutic target.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cancer Research

Background:

  • Sparc/osteonectin, cwcv, and kazal-like domains proteoglycan 1 (SPOCK1), or testican-1, is implicated in tumor development.
  • The role and expression of SPOCK1 in colorectal cancer (CRC) are not well understood.

Purpose of the Study:

  • To investigate the expression pattern and functional role of SPOCK1 in colorectal cancer.
  • To explore SPOCK1 as a potential therapeutic target for CRC treatment.

Main Methods:

  • SPOCK1 expression analysis in CRC cell lines.
  • In vitro and in vivo studies involving SPOCK1 silencing.
  • Assessment of cell proliferation, migration, invasion, and epithelial-mesenchymal transition (EMT).
  • Western blot analysis to evaluate PI3K/Akt signaling pathway activation.

Main Results:

  • SPOCK1 is significantly overexpressed in CRC cell lines.
  • SPOCK1 knockdown suppressed CRC cell proliferation in vitro and tumor growth in vivo.
  • Silencing SPOCK1 attenuated migration and invasion by reversing EMT.
  • Knockdown of SPOCK1 decreased the phosphorylation of PI3K and Akt.

Conclusions:

  • SPOCK1 knockdown inhibits proliferation and invasion in colorectal cancer cells.
  • The PI3K/Akt signaling pathway is implicated in SPOCK1's effects on CRC.
  • SPOCK1 represents a potential therapeutic target for colorectal cancer.

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