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SUZ12 promotes gastric cancer cell proliferation and metastasis by regulating KLF2 and E-cadherin

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Tumor Biology

Abstract

SUZ12 is a core component of the polycomb repressive complex 2 (PRC2), which could silence gene transcription by generating trimethylation on lysine 27 residue of histone H3 (H3K27Me3). Meanwhile, SUZ12 has been found to be overexpressed in multiple cancers; however, the clinical significance and molecular mechanisms of SUZ12 controlling gastric cancer cell proliferation and metastasis are unclear. In this study, we found that SUZ12 expression was significantly increased in 64 gastric tumor tissues compared with normal tissues. Additionally, SUZ12 expression was associated with pathological stage, metastasis distance, and shorter overall survival of gastric cancer patients. Knockdown of SUZ12 expression impaired cell proliferation and invasion in vitro, leading to the inhibition of metastasis in vivo. Upregulation of SUZ12 was found to play a key role in gastric cancer cell proliferation and metastasis through the regulation of EMT and KLF2 expression.

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Acknowledgments

This work was supported by grants from the National Natural Science Foundation of China (No. 81472198), the Key Clinical Medicine Technology Foundation of Jiangsu Province (No. BL2014096), and the Medical Key Talented Person Foundation of the Jiangsu Provincial Developing Health Project (No. RC2011080) to WZX

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    Authors and Affiliations

    1. Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, China

      Rui Xia, Fei-yan Jin, Min Xie & Wei De

    2. Department of General Surgery, The Second Hospital of Liuanyung and Clinical Cancer Institute of Lianyungang, Lianyungang, China

      Kai Lu

    3. Department of Oncology, Second Affiliated Hospital, Nanjing Medical University, Nanjing, 210029, China

      Li Wan & Zhao-xia Wang

    4. Department of Oncology, First Affiliated Hospital, Nanjing Medical University, Nanjing, China

      Tong-peng Xu

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    1. Rui Xia
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    Correspondence to Wei De or Zhao-xia Wang.

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    Rui Xia, Fei-yan Jin and Kai Lu contributed equally to this work.

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    Xia, R., Jin, Fy., Lu, K. et al. SUZ12 promotes gastric cancer cell proliferation and metastasis by regulating KLF2 and E-cadherin. Tumor Biol. 36, 5341–5351 (2015). https://doi.org/10.1007/s13277-015-3195-7

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