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Article

Knockdown of ZFPL1 results in increased autophagy and autophagy‑related cell death in NCI‑N87 and BGC‑823 human gastric carcinoma cell lines

  • Authors:
    • Yong‑Zheng Xie
    • Wan‑Li Ma
    • Ji‑Ming Meng
    • Xue‑Qun Ren
  • View Affiliations / Copyright

    Affiliations: Department of General Surgery, Huaihe Hospital of Henan University, Kaifeng, Henan 475000, P.R. China
  • Pages: 2633-2642
    |
    Published online on: March 9, 2017
       https://doi.org/10.3892/mmr.2017.6300
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Abstract

Macroautophagy, which will hereafter be referred to as autophagy, is an evolutionarily conserved process, during which cells recycle and remove damaged organelles and proteins in response to cellular stress. However, the mechanisms underlying the regulation of autophagy remain to be fully elucidated. The present study demonstrated that knockdown of zinc finger protein like 1 (ZFPL1) induces autophagy and increases autophagic cell death in NCI‑N87 and BGC‑823 human gastric carcinoma cell lines. To examine the role of ZFPL1 in gastric carcinoma cells, ZFPL1 expression was downregulated by lentiviral infection. Zinc finger domain‑FLAG was used to compete with ZFPL1 for golgin A2/GM130 binding. Autophagy was analyzed by red fluorescent protein‑microtubule‑associated protein 1A/1B‑light chain 3 (LC3) puncta, LC3I to LC3II conversion, and p62 expression. The results demonstrated that knockdown of ZFPL1 was able to significantly increase cell death rate. However, ZFPL1 knockdown exerted almost no effect on the expression of apoptosis‑associated markers, including B cell lymphoma 2 (Bcl‑2), Bcl‑x, Bcl‑2‑associated X protein, BH3 interacting domain death agonist, p53, and the classical caspase family members, caspase‑3, caspase‑8 and caspase‑9. An endogenous ZFPL1‑GM130 association was identified in NCI‑N87 cells and BGC‑823 cells by co‑immunoprecipitation. Furthermore, cell death was restricted following treatment of ZFPL1 knockdown cells with an autophagy inhibitor. Therefore, knockdown of ZFPL1 expression may induce cell death via autophagy, rather than apoptosis. These results suggest that ZFPL1 may serve an important role in regulating autophagy in NCI‑N87 and BGC‑823 cells.
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Copy and paste a formatted citation
Spandidos Publications style
Xie YZ, Ma WL, Meng JM and Ren XQ: Knockdown of ZFPL1 results in increased autophagy and autophagy‑related cell death in NCI‑N87 and BGC‑823 human gastric carcinoma cell lines. Mol Med Rep 15: 2633-2642, 2017.
APA
Xie, Y., Ma, W., Meng, J., & Ren, X. (2017). Knockdown of ZFPL1 results in increased autophagy and autophagy‑related cell death in NCI‑N87 and BGC‑823 human gastric carcinoma cell lines. Molecular Medicine Reports, 15, 2633-2642. https://doi.org/10.3892/mmr.2017.6300
MLA
Xie, Y., Ma, W., Meng, J., Ren, X."Knockdown of ZFPL1 results in increased autophagy and autophagy‑related cell death in NCI‑N87 and BGC‑823 human gastric carcinoma cell lines". Molecular Medicine Reports 15.5 (2017): 2633-2642.
Chicago
Xie, Y., Ma, W., Meng, J., Ren, X."Knockdown of ZFPL1 results in increased autophagy and autophagy‑related cell death in NCI‑N87 and BGC‑823 human gastric carcinoma cell lines". Molecular Medicine Reports 15, no. 5 (2017): 2633-2642. https://doi.org/10.3892/mmr.2017.6300
Copy and paste a formatted citation
x
Spandidos Publications style
Xie YZ, Ma WL, Meng JM and Ren XQ: Knockdown of ZFPL1 results in increased autophagy and autophagy‑related cell death in NCI‑N87 and BGC‑823 human gastric carcinoma cell lines. Mol Med Rep 15: 2633-2642, 2017.
APA
Xie, Y., Ma, W., Meng, J., & Ren, X. (2017). Knockdown of ZFPL1 results in increased autophagy and autophagy‑related cell death in NCI‑N87 and BGC‑823 human gastric carcinoma cell lines. Molecular Medicine Reports, 15, 2633-2642. https://doi.org/10.3892/mmr.2017.6300
MLA
Xie, Y., Ma, W., Meng, J., Ren, X."Knockdown of ZFPL1 results in increased autophagy and autophagy‑related cell death in NCI‑N87 and BGC‑823 human gastric carcinoma cell lines". Molecular Medicine Reports 15.5 (2017): 2633-2642.
Chicago
Xie, Y., Ma, W., Meng, J., Ren, X."Knockdown of ZFPL1 results in increased autophagy and autophagy‑related cell death in NCI‑N87 and BGC‑823 human gastric carcinoma cell lines". Molecular Medicine Reports 15, no. 5 (2017): 2633-2642. https://doi.org/10.3892/mmr.2017.6300
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