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Article Open Access

Downregulation of GSDMD attenuates tumor proliferation via the intrinsic mitochondrial apoptotic pathway and inhibition of EGFR/Akt signaling and predicts a good prognosis in non‑small cell lung cancer

  • Authors:
    • Jianwei Gao
    • Xiangyu Qiu
    • Guangmin Xi
    • Hongbing Liu
    • Fang Zhang
    • Tangfeng Lv
    • Yong Song
  • View Affiliations / Copyright

    Affiliations: Department of Respiratory Medicine, Jinling Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu 210002, P.R. China, The Research Institute of General Surgery, Jinling Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu 210002, P.R. China, Department of Respiratory Medicine, Jinling Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu 210002, P.R. China
    Copyright: © Gao et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 1971-1984
    |
    Published online on: August 7, 2018
       https://doi.org/10.3892/or.2018.6634
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Abstract

Gasdermin D (GSDMD) is a newly discovered pyroptosis executive protein, which can be cleaved by inflammatory caspases and is essential for secretion of IL‑1β, making it a critical mediator of inflammation. However, the precise role of GSDMD in carcinogenesis remains nearly unknown. Considering the vital role of inflammation in tumorigenesis, we investigated the biological function of GSDMD in non‑small cell lung cancer (NSCLC). Our study demonstrated that the GSDMD protein levels were significantly upregulated in NSCLC compared to these levels in matched adjacent tumor specimens. Higher GSDMD expression was associated with aggressive traits including larger tumor size and more advanced tumor-node-metastasis (TNM) stages. In addition, high GSDMD expression indicated a poor prognosis in lung adenocarcinoma (LUAD), but not in squamous cell carcinoma (LUSC). Knockdown of GSDMD restricted tumor growth in vitro and in vivo. Notably, intrinsic and extrinsic activation of pyroptotic (NLRP3/caspase‑1) signaling in GSDMD‑deficient tumor cells induced another type of programmed cell death (apoptosis), instead of pyroptosis. GSDMD depletion activated the cleavage of caspase‑3 and PARP, and promoted cancer cell death via intrinsic mitochondrial apoptotic pathways. In addition, co‑expression analyses indicated a correlation between GSDMD and EGFR/Akt signaling. Collectively, our results revealed a crosstalk between pyroptotic signaling and apoptosis in tumor cells. Knockdown of GSDMD attenuated tumor proliferation by promoting apoptosis and inhibiting EGFR/Akt signaling in NSCLC. In conclution, GSDMD is an independent prognostic biomarker for LUAD.
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Copy and paste a formatted citation
Spandidos Publications style
Gao J, Qiu X, Xi G, Liu H, Zhang F, Lv T and Song Y: Downregulation of GSDMD attenuates tumor proliferation via the intrinsic mitochondrial apoptotic pathway and inhibition of EGFR/Akt signaling and predicts a good prognosis in non‑small cell lung cancer. Oncol Rep 40: 1971-1984, 2018.
APA
Gao, J., Qiu, X., Xi, G., Liu, H., Zhang, F., Lv, T., & Song, Y. (2018). Downregulation of GSDMD attenuates tumor proliferation via the intrinsic mitochondrial apoptotic pathway and inhibition of EGFR/Akt signaling and predicts a good prognosis in non‑small cell lung cancer. Oncology Reports, 40, 1971-1984. https://doi.org/10.3892/or.2018.6634
MLA
Gao, J., Qiu, X., Xi, G., Liu, H., Zhang, F., Lv, T., Song, Y."Downregulation of GSDMD attenuates tumor proliferation via the intrinsic mitochondrial apoptotic pathway and inhibition of EGFR/Akt signaling and predicts a good prognosis in non‑small cell lung cancer". Oncology Reports 40.4 (2018): 1971-1984.
Chicago
Gao, J., Qiu, X., Xi, G., Liu, H., Zhang, F., Lv, T., Song, Y."Downregulation of GSDMD attenuates tumor proliferation via the intrinsic mitochondrial apoptotic pathway and inhibition of EGFR/Akt signaling and predicts a good prognosis in non‑small cell lung cancer". Oncology Reports 40, no. 4 (2018): 1971-1984. https://doi.org/10.3892/or.2018.6634
Copy and paste a formatted citation
x
Spandidos Publications style
Gao J, Qiu X, Xi G, Liu H, Zhang F, Lv T and Song Y: Downregulation of GSDMD attenuates tumor proliferation via the intrinsic mitochondrial apoptotic pathway and inhibition of EGFR/Akt signaling and predicts a good prognosis in non‑small cell lung cancer. Oncol Rep 40: 1971-1984, 2018.
APA
Gao, J., Qiu, X., Xi, G., Liu, H., Zhang, F., Lv, T., & Song, Y. (2018). Downregulation of GSDMD attenuates tumor proliferation via the intrinsic mitochondrial apoptotic pathway and inhibition of EGFR/Akt signaling and predicts a good prognosis in non‑small cell lung cancer. Oncology Reports, 40, 1971-1984. https://doi.org/10.3892/or.2018.6634
MLA
Gao, J., Qiu, X., Xi, G., Liu, H., Zhang, F., Lv, T., Song, Y."Downregulation of GSDMD attenuates tumor proliferation via the intrinsic mitochondrial apoptotic pathway and inhibition of EGFR/Akt signaling and predicts a good prognosis in non‑small cell lung cancer". Oncology Reports 40.4 (2018): 1971-1984.
Chicago
Gao, J., Qiu, X., Xi, G., Liu, H., Zhang, F., Lv, T., Song, Y."Downregulation of GSDMD attenuates tumor proliferation via the intrinsic mitochondrial apoptotic pathway and inhibition of EGFR/Akt signaling and predicts a good prognosis in non‑small cell lung cancer". Oncology Reports 40, no. 4 (2018): 1971-1984. https://doi.org/10.3892/or.2018.6634
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