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Lysine‑specific demethylase 2 contributes to the proliferation of small cell lung cancer by regulating the expression of TFPI‑2

  • Authors:
    • Yunfeng Cao
    • Chunhui Guo
    • Yanhai Yin
    • Xin Li
    • Ling Zhou
  • View Affiliations / Copyright

    Affiliations: Department of Oncology, Binzhou Central Hospital, Huimin, Shandong 251700, P.R. China, Department of Respiratory Medicine, Binzhou Central Hospital, Binzhou, Shandong 251700, P.R. China, Department of Respiratory Medicine, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, Shandong 250014, P.R. China
    Copyright: © Cao et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 733-740
    |
    Published online on: May 22, 2018
       https://doi.org/10.3892/mmr.2018.9047
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Abstract

The present study aimed to investigate the effect of lysine‑specific demethylase 2 (LSD2) in small cell lung cancer (SCLC) and explore its underlying regulatory mechanism. Cell growth was tested by MTT assay and mRNA and protein expression was determined by quantitative polymerase chain reaction (q‑PCR) and western blot analysis, respectively. Chromatin immunoprecipitation (ChIP) was used to investigate the degree of H3K4me2 enrichment in the promoter region of tissue factor pathway inhibitor‑2 (TFPI‑2). SCLC tissues and cell lines presented significantly higher expression of LSD2 and DNA methyltransferase 3B (DNMT3B) and lower expression of TFPI‑2 compared with the controls. In H1417 cells LSD2 overexpression increased the mRNA and protein expression of DNMT3B, while inhibiting the mRNA and protein expression of TFPI‑2. Following transfection with short interfering (si) RNA‑DNMT3B, the expression of TFPI‑2 increased in H1417 cells. The results of ChIP demonstrated that compared with the controls, H3K4me1 enrichment in the TFPI‑2 promoter region was to a lower degree in the H1417 cells with LSD2 overexpression and a higher degree in the H1417 cells with LSD2 silencing. MTT assays revealed that LSD2 overexpression significantly promoted the growth of H69, DMS‑114 and H1417 cells, which was contradictory to the effect on LSD2 silencing. Compared with the LSD2 overexpression cells, SCLC cells with simultaneous overexpression of LSD2 and TFPI‑2 demonstrated a decreased proliferation. These results suggest that LSD2 achieves a promoting effect on SCLC by indirectly regulating TFPI‑2 expression through the mediation of DNMT3B expression or through the regulation of the demethylation of H3K4me1 in the promoter region of the TFPI‑2 gene.
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Copy and paste a formatted citation
Spandidos Publications style
Cao Y, Guo C, Yin Y, Li X and Zhou L: Lysine‑specific demethylase 2 contributes to the proliferation of small cell lung cancer by regulating the expression of TFPI‑2. Mol Med Rep 18: 733-740, 2018.
APA
Cao, Y., Guo, C., Yin, Y., Li, X., & Zhou, L. (2018). Lysine‑specific demethylase 2 contributes to the proliferation of small cell lung cancer by regulating the expression of TFPI‑2. Molecular Medicine Reports, 18, 733-740. https://doi.org/10.3892/mmr.2018.9047
MLA
Cao, Y., Guo, C., Yin, Y., Li, X., Zhou, L."Lysine‑specific demethylase 2 contributes to the proliferation of small cell lung cancer by regulating the expression of TFPI‑2". Molecular Medicine Reports 18.1 (2018): 733-740.
Chicago
Cao, Y., Guo, C., Yin, Y., Li, X., Zhou, L."Lysine‑specific demethylase 2 contributes to the proliferation of small cell lung cancer by regulating the expression of TFPI‑2". Molecular Medicine Reports 18, no. 1 (2018): 733-740. https://doi.org/10.3892/mmr.2018.9047
Copy and paste a formatted citation
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Spandidos Publications style
Cao Y, Guo C, Yin Y, Li X and Zhou L: Lysine‑specific demethylase 2 contributes to the proliferation of small cell lung cancer by regulating the expression of TFPI‑2. Mol Med Rep 18: 733-740, 2018.
APA
Cao, Y., Guo, C., Yin, Y., Li, X., & Zhou, L. (2018). Lysine‑specific demethylase 2 contributes to the proliferation of small cell lung cancer by regulating the expression of TFPI‑2. Molecular Medicine Reports, 18, 733-740. https://doi.org/10.3892/mmr.2018.9047
MLA
Cao, Y., Guo, C., Yin, Y., Li, X., Zhou, L."Lysine‑specific demethylase 2 contributes to the proliferation of small cell lung cancer by regulating the expression of TFPI‑2". Molecular Medicine Reports 18.1 (2018): 733-740.
Chicago
Cao, Y., Guo, C., Yin, Y., Li, X., Zhou, L."Lysine‑specific demethylase 2 contributes to the proliferation of small cell lung cancer by regulating the expression of TFPI‑2". Molecular Medicine Reports 18, no. 1 (2018): 733-740. https://doi.org/10.3892/mmr.2018.9047
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