Evidence map›Paper›PMID 31013330›Full record

ArticlePloS one2019

Natural variation in the roles of C. elegans autophagy components during microsporidia infection.

Keir M Balla, Vladimir Lažetić, Emily R Troemel

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
2.1field-weighted citation impact, top 14% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

21 citing papers in PubMed, 37 citations in OpenAlex.

  1. Review
  2. Article
  3. Parasite defense covaries with reproductive timing, not with resistance.bioRxiv : the preprint server for biology · 2026
    Article
  4. Review
  5. Condition-dependent effects of knockdown of autophagy onbioRxiv : the preprint server for biology · 2025
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Phagocytosis Is the Sole Arm ofFrontiers in immunology · 2022
    Article
  15. Review
  16. Review
  17. Article
  18. Ubiquitin-related processes and innate immunity in C. elegans.Cellular and molecular life sciences : CMLS · 2021
    Review
  19. Genetic Variation inMicroorganisms · 2020
    Review
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 1 institution in 1 country.

Keir M BallaDivision of Biological Sciences, University of California, San Diego, La Jolla, California, United States of America.
Vladimir LažetićDivision of Biological Sciences, University of California, San Diego, La Jolla, California, United States of America.ORCID 0000-0001-5825-6584
Emily R TroemelDivision of Biological Sciences, University of California, San Diego, La Jolla, California, United States of America.ORCID 0000-0003-2422-0473
University of California San Diego · US

Funding

The Intracellular Pathogen Response Triggers Defense Against Co-evolved PathogensR01GM114139 · NIGMS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI Emily R Troemel · 2015 to 2026
$3.1M
Probing organismal proteostasis through the response to intracellular infectionR01AG052622 · NIA · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI Emily R Troemel · 2017 to 2026
$2.7M
Probing organismal proteostasis through the response to intracellular infectionR56AG052622 · NIA · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI TROEMEL, EMILY R · 2016 to 2016
$388k
NIA NIH HHS R01 AG052622NIA NIH HHS R56 AG052622NIGMS NIH HHS R01 GM114139
6 · The paper itself

Abstract

Natural genetic variation can determine the outcome of an infection, and often reflects the co-evolutionary battle between hosts and pathogens. We previously found that a natural variant of the nematode Caenorhabditis elegans from Hawaii (HW) has increased resistance against natural microsporidian pathogens in the Nematocida genus, when compared to the standard laboratory strain of N2. In particular, HW animals can clear infection, while N2 animals cannot. In addition, HW animals have lower levels of initial colonization of Nematocida inside intestinal cells, compared to N2. Here we investigate how this natural variation in resistance relates to autophagy. We found that there is much better targeting of autophagy-related machinery to parasites under conditions where they are cleared. In particular, ubiquitin targeting to Nematocida cells correlates very well with their subsequent clearance in terms of timing, host strain and age, as well as species of Nematocida. Furthermore, clearance correlates with targeting of the LGG-2/LC3 autophagy protein to parasite cells, with HW animals having much more efficient targeting of LGG-2 to parasite cells than N2 animals. Surprisingly, however, we found that LGG-2 is not required to clear infection. Instead, we found that LGG-2/LC3 regulates Nematocida colonization inside intestinal cells. Interestingly, LGG-2/LC3 regulates intracellular colonization only in the HW strain, and not in N2. Altogether these results demonstrate that there is natural genetic variation in an LGG-2-dependent process that regulates microsporidia colonization inside intestinal cells, although not microsporidia clearance.

Indexed as

AnimalsAutophagyCaenorhabditis elegansCaenorhabditis elegans ProteinsHost-Pathogen InteractionsIntestinesMicrosporidiosisMicrotubule-Associated ProteinsCaenorhabditis elegans ProteinsLGG-2 protein, C elegansMicrotubule-Associated Proteins

Identifiers

PMID31013330
PMCPMC6478341
OpenAlexW2942134439

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.