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Article Open Access

Role of ROCK/NF‑κB/AQP8 signaling in ethanol‑induced intestinal epithelial barrier dysfunction

  • Authors:
    • Hang Zhao
    • Xiaonan Sun
    • Jing Tong
  • View Affiliations / Copyright

    Affiliations: Department of Gastroenterology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China, Department of Ophthalmology, The 4th People's Hospital of Shenyang, Shenyang, Liaoning 110031, P.R. China
    Copyright: © Zhao et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 2253-2262
    |
    Published online on: July 9, 2020
       https://doi.org/10.3892/mmr.2020.11318
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Abstract

The present study aimed to investigate the signaling pathways and the underlying molecular mechanisms involved in ethanol‑induced intestinal epithelial barrier (IEB) dysfunction. Therefore, an in vitro experimental model of IEB was established using an ethanol‑treated Caco‑2 intestinal epithelial cell monolayer. The results confirmed that Rho‑associated kinases (ROCKs), namely ROCK1 and ROCK2, were involved in the underlying pathway of ethanol‑induced IEB dysfunction. Ethanol exposure significantly increased the expression of both ROCK isoforms and the activity of nuclear factor κB (NF‑κB). Furthermore, ROCK1‑ and ROCK2‑specific small interfering RNAs (siRNAs), and the NF‑κB inhibitor ammonium pyrrolidine dithiocarbamate partially inhibited transepithelial electrical resistance in Caco‑2 cells in an in vitro IEB model. In addition, ROCK1‑ and ROCK2‑specific siRNAs inhibited the activity of NF‑κB, thereby downregulating the expression of aquaporin 8 (AQP8). Taken together, the results of the present study suggested that ROCK1/ROCK2‑mediated activation of NF‑κB and upregulation of AQP8 expression levels may represent a novel mechanism of ethanol‑induced impairment of IEB function.
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Copy and paste a formatted citation
Spandidos Publications style
Zhao H, Sun X and Tong J: Role of ROCK/NF‑κB/AQP8 signaling in ethanol‑induced intestinal epithelial barrier dysfunction. Mol Med Rep 22: 2253-2262, 2020.
APA
Zhao, H., Sun, X., & Tong, J. (2020). Role of ROCK/NF‑κB/AQP8 signaling in ethanol‑induced intestinal epithelial barrier dysfunction. Molecular Medicine Reports, 22, 2253-2262. https://doi.org/10.3892/mmr.2020.11318
MLA
Zhao, H., Sun, X., Tong, J."Role of ROCK/NF‑κB/AQP8 signaling in ethanol‑induced intestinal epithelial barrier dysfunction". Molecular Medicine Reports 22.3 (2020): 2253-2262.
Chicago
Zhao, H., Sun, X., Tong, J."Role of ROCK/NF‑κB/AQP8 signaling in ethanol‑induced intestinal epithelial barrier dysfunction". Molecular Medicine Reports 22, no. 3 (2020): 2253-2262. https://doi.org/10.3892/mmr.2020.11318
Copy and paste a formatted citation
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Spandidos Publications style
Zhao H, Sun X and Tong J: Role of ROCK/NF‑κB/AQP8 signaling in ethanol‑induced intestinal epithelial barrier dysfunction. Mol Med Rep 22: 2253-2262, 2020.
APA
Zhao, H., Sun, X., & Tong, J. (2020). Role of ROCK/NF‑κB/AQP8 signaling in ethanol‑induced intestinal epithelial barrier dysfunction. Molecular Medicine Reports, 22, 2253-2262. https://doi.org/10.3892/mmr.2020.11318
MLA
Zhao, H., Sun, X., Tong, J."Role of ROCK/NF‑κB/AQP8 signaling in ethanol‑induced intestinal epithelial barrier dysfunction". Molecular Medicine Reports 22.3 (2020): 2253-2262.
Chicago
Zhao, H., Sun, X., Tong, J."Role of ROCK/NF‑κB/AQP8 signaling in ethanol‑induced intestinal epithelial barrier dysfunction". Molecular Medicine Reports 22, no. 3 (2020): 2253-2262. https://doi.org/10.3892/mmr.2020.11318
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