Cited by 45Fungal Infections and StudiesAntifungal resistance and susceptibilityFungal and yeast genetics research

Fungicide-tolerant persister formation during cryptococcal pulmonary infection

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Ke, Weixin, Xie, Yuyan, Chen, Yingying, Ding, Hao, Ye, Leixin, Qiu, Haoning, Li, Hao, Zhang, Lanyue +19 more·2024·Cell Host & Microbe

Abstract

Bacterial persisters, a subpopulation of genetically susceptible cells that are normally dormant and tolerant to bactericides, have been studied extensively because of their clinical importance. In comparison, much less is known about the determinants underlying fungicide-tolerant fungal persister formation in vivo. Here, we report that during mouse lung infection, Cryptococcus neoformans forms persisters that are highly tolerant to amphotericin B (AmB), the standard of care for treating cryptococcosis. By exploring stationary-phase indicator molecules and developing single-cell tracking strategies, we show that in the lung, AmB persisters are enriched in cryptococcal cells that abundantly produce stationary-phase molecules. The antioxidant ergothioneine plays a specific and key role in AmB persistence, which is conserved in phylogenetically distant fungi. Furthermore, the antidepressant sertraline (SRT) shows potent activity specifically against cryptococcal AmB persisters. Our results provide evidence for and the determinant of AmB-tolerant persister formation in pulmonary cryptococcosis, which has potential clinical significance.

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Crossref · 10.1016/j.chom.2023.12.012

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  • In a mouse model of pulmonary cryptococcosis, ergothioneine and its encoding gene EGT1 were significantly overexpressed in AmB persisters.

    “Moreover, a recent study using a mouse model of pulmonary cryptococcosis found that ergothioneine and its encoding gene, EGT1, were significantly overexpressed in AmB persisters.”

    From Antifungal persistence: Clinical relevance and mechanisms (2025) · cites this paper as [3]

    The Results (Figure 5C) show significantly higher ergothioneine-associated signals in mouse-lung cells with high Sps1 expression, a population enriched for AmB persisters. The Results also report significantly higher EGT1 expression in stationary-phase cells than in early-exponential-phase cells (Table S1), but do not establish that EGT1 was overexpressed in persisters from the mouse lungs. The claim conflates those populations and measurements. (LLM, conf=0.86)

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  • The EGT gene, responsible for ergothioneine synthesis, plays a critical role in regulating AmB susceptibility.

    “This provides insight into the critical role of the EGT gene, responsible for the synthesis of ergothioneine, in regulating AmB susceptibility [112].”

    From Insight into the Mechanisms and Clinical Relevance of Antifungal Heteroresistance (2025) · cites this paper as [112]

    The Results show that EGT1 is essential for ergothioneine production and that deleting it greatly reduces survival of stationary-phase cryptococcal cells under AmB treatment. The claim is broader than the finding: the Results report an unchanged AmB MIC, and the Discussion describes EGT1's role as specific to persistence rather than AmB resistance. (LLM, conf=0.87)

    Experimental — accuracy not yet measured
  • Reduced ATP synthesis due to limited respiration may be a key mechanism of AmB-tolerant Cryptococcus neoformans persister formation.

    “A recent study has found that reduced ATP synthesis due to limited respiration may be a key mechanism of AmB-tolerant Cryptococcus neoformans persisters formation [3].”

    From Antifungal persistence: Clinical relevance and mechanisms (2025) · cites this paper as [3]

  • Dormant cells have been observed in various cases of antifungal persistence, such as AmB-tolerant C. albicans biofilms and a mouse model of pulmonary cryptococcosis.

    “Dormant cells have been observed in various cases of antifungal persistence, such as in AmB-tolerant C. albicans biofilms and in a mouse model of pulmonary cryptococcosis [3,33].”

    From Antifungal persistence: Clinical relevance and mechanisms (2025) · cites this paper as [3]

  • Sertraline demonstrated satisfactory anti-persistence effect both in vitro and in vivo in a study of Cryptococcus persisters.

    “In a study of Cryptococcus persisters, an antidepressant drug sertraline demonstrated satisfactory anti-persistence effect both in vitro and in vivo [3].”

    From Antifungal persistence: Clinical relevance and mechanisms (2025) · cites this paper as [3]

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Research works printed but not linked: 2

  1. [26]26. Lin, X. ∙ Heitman, J. The biology of the Cryptococcus neoformans species complex Annu. Rev. Microbiol. 2006; 60:69-105 Crossref Scopus (322) PubMed Google Scholar
  2. [27]27. Zhao, Y. ∙ Lin, J. ∙ Fan, Y. ... Life cycle of Cryptococcus neoformans Annu. Rev. Microbiol. 2019; 73:17-42 Crossref Scopus (67) PubMed Google Scholar

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Authors
Ke, W., Xie, Y., Chen, Y., Ding, H., Ye, L., Qiu, H., Li, H., Zhang, L., Chen, L., Tian, X., Shen, Z., Song, Z., Fan, X., Zong, J.-F., Guo, Z., Ma, X., Xiao, M., Liao, G., Liu, C. H., Yin, W.-B., Dong, Z., Yang, F., Jiang, Y.-Y., Perlin, D. S., Chen, Y., Fu, Y. V., & Wang, L.
Affiliations
  • Chinese Academy of Sciences (CN)
  • Tongji University (CN)
  • Capital Medical University (CN)
  • Southwest University (CN)
  • Chinese Academy of Medical Sciences & Peking Union Medical College (CN)
  • Hackensack Meridian Health (US)
Corresponding author
  • Fu, Yu V
  • Wang, Linqi
Venue
Cell Host & Microbe
Publisher
Elsevier BV
Published
2024-02
Volume
32
Issue
2
Pages
276-289.e7
ISSN
1931-3128 (ISSN-L)
OpenAlex
W4390753339
Cited by
45
References
79
Citations by year
2026: 15 · 2025: 21 · 2024: 9
FWCI
13.65
Type
journal article
Language
en
Open access
Locations
  • Cell Host & Microbe (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Chinese Academy of Sciences
  • Key Technologies Research and Development Program (2021YFC2300400, 2022YFC2303000, 2022YFC2303100)
  • National Key Research and Development Program of China
  • National Natural Science Foundation of China (32270206)
Topics
  • Health Sciences › Medicine › Epidemiology › Fungal Infections and Studies
  • Health Sciences › Medicine › Infectious Diseases › Antifungal resistance and susceptibility
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Fungal and yeast genetics research
Keywords
Cryptococcus neoformans, pulmonary cryptococcosis, fungicide tolerance, ergothioneine, sertraline, single-cell tracking, pulmonary infection, antifungal resistance
MeSH terms
Amphotericin B, Animals, Anti-Bacterial Agents, Antifungal Agents, Cryptococcosis, Cryptococcus neoformans, Fungicides, Industrial, Pneumonia, Mice

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