Evidence map›Paper›PMID 11500433›Full record

ArticleInfection and immunity2001

Laccase of Cryptococcus neoformans is a cell wall-associated virulence factor.

X Zhu, J Gibbons, J Garcia-Rivera, A Casadevall, P R Williamson

Open access · greenAbstract read
In one paragraph

Article in Infection and immunity, 2001. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 81 papers.

0numbers the graph read from it
0cells of the map it votes in
81citing papers in PubMed
4.7field-weighted citation impact, top 5% 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

81 citing papers in PubMed, 190 citations in OpenAlex.

  1. Review
  2. Review
  3. A Chimeric ORF Fusion Phenotypic Reporter forJournal of fungi (Basel, Switzerland) · 2024
    Article
  4. Article
  5. Measuring Laccase Activity and Melanin Production in Cryptococcus neoformans.Methods in molecular biology (Clifton, N.J.) · 2024
    Article
  6. Review
  7. Review
  8. Article
  9. Mechanisms of fungal dissemination.Cellular and molecular life sciences : CMLS · 2021
    Review
  10. Article
  11. Melanin as a Virulence Factor in Different Species of GenusJournal of fungi (Basel, Switzerland) · 2020
    Article
  12. Article
  13. Article
  14. Article
  15. Manganese (II) removal from aqueous solutions byBiotechnology reports (Amsterdam, Netherlands) · 2020
    Article
  16. Laccase Properties, Physiological Functions, and Evolution.International journal of molecular sciences · 2020
    Review
  17. Review
  18. Article
  19. Article
  20. Article

21 more citing papers are in PubMed but not listed here.

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

5 authors at 2 institutions in 1 country.

X ZhuDivision of Infectious Diseases, University of Illinois at Chicago College of Medicine, Chicago, Illinois, USA.
J Gibbons
J Garcia-Rivera
A Casadevall
P R Williamson
University of Illinois Chicago · USAlbert Einstein College of Medicine · US

Funding

Synergy of Host Defense Mechanisms in the LungR01HL059842 · NHLBI · YESHIVA UNIVERSITY · PI CASADEVALL, ARTURO · 1997 to 2023
$7.4M
Training in HIV/AIDS Pathogenesis; Basic and Translational ResearchT32AI007501 · NIAID · YESHIVA UNIVERSITY · PI PRASAD, VINAYAKA R. · 1995 to 2024
$6.6M
PROTECTIVE ANTIBODIES FOR CRYPTOCOCCAL INFECTIONSR01AI033774 · NIAID · YESHIVA UNIVERSITY · PI CASADEVALL, ARTURO · 1994 to 2014
$5.6M
The Role of Unc119 in T Cell Antigen Receptor Signaling1R01AI045995 · NIAID · UNIVERSITY OF ILLINOIS AT CHICAGO · PI COOK, JAMES LOWELL · 1999 to 2009
$2.6M
CNLAC 1 AND THE VIRULENCE OF CRYPTOCOCCUSR29AI038258 · NIAID · UNIVERSITY OF ILLINOIS AT CHICAGO · PI WILLIAMSON, PETER RICHARD · 1996 to 2000
$105k
NHLBI NIH HHS HL-59842NHLBI NIH HHS R01 HL059842NIAID NIH HHS AI3342NIAID NIH HHS AI33774NIAID NIH HHS AI38258NIAID NIH HHS AI45995NIAID NIH HHS R01 AI033774NIAID NIH HHS R01 AI045995NIAID NIH HHS T32 AI007501NIAID NIH HHS T32-AI07501
6 · The paper itself

Abstract

Virulence is the outcome of an interaction between the host and a microbe and is characterized by a large array of opposing reactions operating at the host-pathogen interface. Cryptococcus neoformans is an important opportunistic pathogen in immunocompromised patients, including those with human immunodeficiency virus, and expresses a virulence-associated laccase which is believed to oxidize brain catecholamines and iron as a defense against host immune cells. In the present report, we investigated the cellular location of laccase to understand more fully how it contributes to cryptococcal virulence. A monoclonal antibody to the C. neoformans laccase was generated and used to show localization in the cell walls of representative serotype A (H99) and serotype D (B-3501) strains by immunoelectron microscopy. In addition, confocal microscopy was used to show a peripheral location of green fluorescent protein-tagged laccase expressed in live H99 cells. Biochemical studies showed that laccase could be released from intact cells or cell wall fractions with glucanase enzymes but was retained in the cell wall after sequential extraction with 1 M NaCl, 6 M urea, and 1% sodium dodecyl sulfate. The presence of a hydrolyzable bond linking laccase to the cell wall was suggested by removal of laccase from cell wall preparations after they were boiled in 1% sodium dodecyl sulfate, as was the presence of a disulfide or thioester bond by removal with dithiothreitol or beta-mercaptoethanol. These data show that laccase is present as a tightly associated cell wall enzyme that is readily accessible for interactions with host immune cells.

Indexed as

AnimalsAntibodies, MonoclonalBlotting, WesternCell WallCryptococcus neoformansGreen Fluorescent ProteinsHybridomasImmunizationLaccaseLuminescent ProteinsMaleMiceMice, Inbred BALB CMicroscopy, ConfocalMicroscopy, ImmunoelectronOxidoreductasesAntibodies, MonoclonalGreen Fluorescent ProteinsLaccaseLuminescent ProteinsOxidoreductasesRecombinant Fusion Proteins

Identifiers

PMID11500433
PMCPMC98673
OpenAlexW2158040399

What OpenQuestion holds

Textmetadata
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.