Relationship between calcium-activated chloride channel 1 and MUC5AC in goblet cell hyperplasia induced by interleukin-13 in human bronchial epithelial cells

Masanori Yasuo, Keisaku Fujimoto, Tsuyoshi Tanabe, Hironobu Yaegashi, Kenji Tsushima, Keiichirou Takasuna, Takeshi Koike, Mutsuo Yamaya, Toshio Nikaido

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47 Citations (Scopus)

Abstract

Background: Interleukin (IL)-13 has recently been reported as the major T-helper 2 cytokine involved in mucus overproduction and oversecretion in allergic airways. However, the relationship between human calcium-activated chloride channel-1 (hCLCA1) and MUC5AC induced by IL-13 in vitro has not been fully investigated. Objectives: The present study examines whether IL-13 induces the expression of hCLCA1 in normal human bronchial epithelial (NHBE) cells. We also investigated the relationship between hCLCA1 and MUC5AC expression and the development of goblet cell hyperplasia (GCH). Methods: NHBE cells were isolated from human bronchi, and cultured with an air-liquid interface. hCLCA1 and MUC5AC gene and protein expression, as well as GCH were examined in the cells after exposure to IL-13. Results: Incubation with IL-13 for 14 and 21 days increased the total number of epithelial cells, the number of periodic acid-Schiff (PAS)-stained epithelial cells, the number of goblet cells, as well as expression of mRNA and protein of hCLCA1 and MUC5AC. The number of goblet cells with secretory granules also increased after 21 days of incubation with IL-13. Niflumic acid, a chloride channel inhibitor, reduced mRNA expression of hCLCA1 and MUC5AC, and reduced the number of PAS-positive cells after incubation with IL-13. NHBE cells exposed or not to IL-13 expressed IL-13 receptor α1 (IL-13Rα1), and an antibody to IL-13 Rα1 also reduced the number of PAS-positive cells after exposure to IL-13. Conclusions: IL-13 might induce the expression of MUC5AC and hCLCA1 gene and protein in well-differentiated NHBE cells. These cells might also differentiate into goblet cells and become hyperplastic.

Original languageEnglish
Pages (from-to)347-359
Number of pages13
JournalRespiration
Volume73
Issue number3
DOIs
Publication statusPublished - 2006 May 1

Keywords

  • Bronchial epithelial cells
  • Goblet cell hyperplasia
  • Interleukin-13
  • MUC5AC
  • hCLCA1

ASJC Scopus subject areas

  • Pulmonary and Respiratory Medicine

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    Yasuo, M., Fujimoto, K., Tanabe, T., Yaegashi, H., Tsushima, K., Takasuna, K., Koike, T., Yamaya, M., & Nikaido, T. (2006). Relationship between calcium-activated chloride channel 1 and MUC5AC in goblet cell hyperplasia induced by interleukin-13 in human bronchial epithelial cells. Respiration, 73(3), 347-359. https://doi.org/10.1159/000091391