Autophagy proteins control goblet cell function by potentiating reactive oxygen species production

Khushbu K. Patel, Hiroyuki Miyoshi, Wandy L. Beatty, Richard D. Head, Nicole P. Malvin, Ken Cadwell, Jun Lin Guan, Tatsuya Saitoh, Shizuo Akira, Per O. Seglen, Mary C. Dinauer, Herbert W. Virgin, Thaddeus S. Stappenbeck

Research output: Contribution to journalArticle

111 Citations (Scopus)

Abstract

Delivery of granule contents to epithelial surfaces by secretory cells is a critical physiologic process. In the intestine, goblet cells secrete mucus that is required for homeostasis. Autophagy proteins are required for secretion in some cases, though the mechanism and cell biological basis for this requirement remain unknown. We found that in colonic goblet cells, proteins involved in initiation and elongation of autophagosomes were required for efficient mucus secretion. The autophagy protein LC3 localized to intracellular multi-vesicular vacuoles that were consistent with a fusion of autophagosomes and endosomes. Using cultured intestinal epithelial cells, we found that NADPH oxidases localized to and enhanced the formation of these LC3-positive vacuoles. Both autophagy proteins and endosome formation were required for maximal production of reactive oxygen species (ROS) derived from NADPH oxidases. Importantly, generation of ROS was critical to control mucin granule accumulation in colonic goblet cells. Thus, autophagy proteins can control secretory function through ROS, which is in part generated by LC3-positive vacuole-associated NADPH oxidases. These findings provide a novel mechanism by which autophagy proteins can control secretion.

Original languageEnglish (US)
Pages (from-to)3130-3144
Number of pages15
JournalEMBO Journal
Volume32
Issue number24
DOIs
StatePublished - Dec 11 2013

Fingerprint

Goblet Cells
Autophagy
Reactive Oxygen Species
NADPH Oxidase
Vacuoles
Proteins
Endosomes
Mucus
Mucins
Intestines
Elongation
Homeostasis
Fusion reactions
Epithelial Cells

Keywords

  • Autophagy
  • Epithelium
  • Goblet cell
  • Intestine
  • NADPH oxidase

ASJC Scopus subject areas

  • Neuroscience(all)
  • Molecular Biology
  • Immunology and Microbiology(all)
  • Biochemistry, Genetics and Molecular Biology(all)

Cite this

Patel, K. K., Miyoshi, H., Beatty, W. L., Head, R. D., Malvin, N. P., Cadwell, K., ... Stappenbeck, T. S. (2013). Autophagy proteins control goblet cell function by potentiating reactive oxygen species production. EMBO Journal, 32(24), 3130-3144. https://doi.org/10.1038/emboj.2013.233

Autophagy proteins control goblet cell function by potentiating reactive oxygen species production. / Patel, Khushbu K.; Miyoshi, Hiroyuki; Beatty, Wandy L.; Head, Richard D.; Malvin, Nicole P.; Cadwell, Ken; Guan, Jun Lin; Saitoh, Tatsuya; Akira, Shizuo; Seglen, Per O.; Dinauer, Mary C.; Virgin, Herbert W.; Stappenbeck, Thaddeus S.

In: EMBO Journal, Vol. 32, No. 24, 11.12.2013, p. 3130-3144.

Research output: Contribution to journalArticle

Patel, KK, Miyoshi, H, Beatty, WL, Head, RD, Malvin, NP, Cadwell, K, Guan, JL, Saitoh, T, Akira, S, Seglen, PO, Dinauer, MC, Virgin, HW & Stappenbeck, TS 2013, 'Autophagy proteins control goblet cell function by potentiating reactive oxygen species production', EMBO Journal, vol. 32, no. 24, pp. 3130-3144. https://doi.org/10.1038/emboj.2013.233
Patel, Khushbu K. ; Miyoshi, Hiroyuki ; Beatty, Wandy L. ; Head, Richard D. ; Malvin, Nicole P. ; Cadwell, Ken ; Guan, Jun Lin ; Saitoh, Tatsuya ; Akira, Shizuo ; Seglen, Per O. ; Dinauer, Mary C. ; Virgin, Herbert W. ; Stappenbeck, Thaddeus S. / Autophagy proteins control goblet cell function by potentiating reactive oxygen species production. In: EMBO Journal. 2013 ; Vol. 32, No. 24. pp. 3130-3144.
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