Cited by 255Endoplasmic Reticulum Stress and DiseaseIon Channels and ReceptorsFungal and yeast genetics research

Essential role of calcineurin in response to endoplasmic reticulum stress

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Bonilla, Myriam, Nastase, Kristin K., Cunningham, Kyle W.·2002·The EMBO Journal

Abstract

Depletion of calcium ions (Ca2+) from the endoplasmic reticulum (ER) of yeast cells resulted in the activation of the unfolded protein response (UPR) signaling pathway involving Ire1p and Hac1p. The depleted ER also stimulated Ca2+ influx at the plasma membrane through the Cch1p-Mid1p Ca2+ channel and another system. Surprisingly, both Ca2+ influx systems were stimulated upon accumulation of misfolded proteins in the ER even in the presence of Ca2+. The ability of misfolded ER proteins to stimulate Ca2+ influx at the plasma membrane did not require Ire1p or Hac1p, and Ca2+ influx and signaling factors were not required for initial UPR signaling. However, activation of the Ca2+ channel, calmodulin, calcineurin and other factors was necessary for long-term survival of cells undergoing ER stress. A similar calcium cell survival (CCS) pathway operates in the pathogenic fungi and promotes resistance to azole antifungal drugs. These findings reveal an unanticipated new regulatory mechanism that couples ER stress to Ca2+ influx and signaling pathways, which help to prevent cell death and promote resistance to an important class of fungistatic drugs.

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Authors
Bonilla, M., Nastase, K. K., & Cunningham, K. W.
Affiliations
Johns Hopkins University (US)
Corresponding author
Cunningham, Kyle W.
Venue
The EMBO Journal
Published
2002-05-15
Volume
21
Issue
10
Pages
2343-2353
ISSN
  • 0261-4189 (ISSN-L)
  • 1460-2075
OpenAlex
W2121972996
Cited by
255
References
77
Citations by year
2026: 2 · 2025: 6 · 2024: 9 · 2023: 6 · 2022: 12 · 2021: 5 · 2020: 10 · 2019: 5 · 2018: 3 · 2017: 14 · 2016: 10 · 2015: 12 · 2014: 21 · 2013: 10 · 2012: 23
FWCI
5.21
Type
journal article
Language
en
Open access
Locations
  • The EMBO Journal (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • National Institute of General Medical Sciences (GM53082, R01GM053082)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Endoplasmic Reticulum Stress and Disease
  • Life Sciences › Neuroscience › Sensory Systems › Ion Channels and Receptors
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Fungal and yeast genetics research
Keywords
calcineurin, endoplasmic reticulum stress, unfolded protein response, calcium influx, calmodulin, Ire1p, misfolded proteins, cell survival, fungal pathogens, Saccharomyces cerevisiae
MeSH terms
Antifungal Agents, Calmodulin, Cell Membrane, Cell Survival, DNA, Fungal, Endoplasmic Reticulum, Genotype, Saccharomyces cerevisiae, Stress, Mechanical, Tunicamycin, Blotting, Northern, Calcium Channels, Signal Transduction, Polymerase Chain Reaction, Protein Folding, Calcineurin, Calcium Signaling

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