Evidence map›Paper›PMID 17545316›Full record

ArticleEukaryotic cell2007

Identification and characterization of CPS1 as a hyaluronic acid synthase contributing to the pathogenesis of Cryptococcus neoformans infection.

Ambrose Jong, Chun-Hua Wu, Han-Min Chen, Feng Luo, Kyung J Kwon-Chung, Yun C Chang, Craig W Lamunyon, Anna Plaas, Sheng-He Huang

Open access · diamondAbstract read
In one paragraph

Article in Eukaryotic cell, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 70 papers.

0numbers the graph read from it
0cells of the map it votes in
70citing papers in PubMed
2.7field-weighted citation impact, top 10% 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

70 citing papers in PubMed, 111 citations in OpenAlex.

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  11. Mechanisms and Virulence Factors ofJournal of fungi (Basel, Switzerland) · 2024
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  16. Combating increased antifungal drug resistance inActa biochimica et biophysica Sinica · 2023
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  18. Macropinocytosis as a potential mechanism driving neurotropism ofFrontiers in cellular and infection microbiology · 2023
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  19. Journal of fungi (Basel, Switzerland) · 2022
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  20. Article

10 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

9 authors at 5 institutions in 2 countries.

Ambrose JongDivision of Hematology-Oncology, Children's Hospital Los Angeles, Los Angeles, CA 90027, USA. ajong@chla.usc.edu
Chun-Hua Wu
Han-Min Chen
Feng Luo
Kyung J Kwon-Chung
Yun C Chang
Craig W Lamunyon
Anna Plaas
Sheng-He Huang
National Institute of Allergy and Infectious Diseases · USCalifornia State Polytechnic University · USChildren's Hospital of Los Angeles · USFu Jen Catholic University · TWRush University · US

Funding

The Response of Choline and Folate Status to Controlled Levels of Choline IntakeS06GM053933 · NIGMS · CALIFORNIA STATE POLY U POMONA · PI BUCKLEY-NIEVES, NANCY E · 1997 to 2007
$15.1M
Invasion of C. neoformans into brain endothelial cellsR01NS047599 · NINDS · CHILDREN'S HOSPITAL OF LOS ANGELES · PI JONG, AMBROSE Y · 2004 to 2012
$2.5M
Escherichia coli invasion of brain endothelial cellsR01AI040635 · NIAID · CHILDREN'S HOSPITAL OF LOS ANGELES · PI HUANG, SHENG-HE · 2003 to 2007
$1.2M
Mechanism of Brain Invasion by Cryptococcus neoformans Z01AI000057 · NIAID · NIAID EXTRAMURAL ACTIVITIES · PI KWON-CHUNG, KYUNG · 1985 to 2008
$1.0M
NIAID NIH HHS R01 AI040635NIAID NIH HHS R01-AI40635NIGMS NIH HHS S06 GM053933NINDS NIH HHS R01 NS047599NINDS NIH HHS R01-NS047599
6 · The paper itself

Abstract

Cryptococcus neoformans is a pathogenic yeast that often causes devastating meningoencephalitis in immunocompromised individuals. We have previously identified the C. neoformans CPS1 gene, which is required for a capsular layer on the outer cell wall. In this report, we investigate the function of the CPS1 gene and its pathogenesis. We demonstrated that treatment of yeast with either 4-methylumbelliferone or hyaluronidase resulted in a reduction of the level of C. neoformans binding to human brain microvascular endothelial cells (HBMEC). Yeast extracellular structures were also altered accordingly in hyaluronidase-treated cells. Furthermore, observation of yeast strains with different hyaluronic acid contents showed that the ability to bind to HBMEC is proportional to the hyaluronic acid content. A killing assay with Caenorhabditis elegans demonstrated that the CPS1 wild-type strain is more virulent than the cps1Delta strain. When CPS1 is expressed in Saccharomyces cerevisiae and Escherichia coli, hyaluronic acid can be detected in the cells. Additionally, we determined by fluorophore-assisted carbohydrate electrophoretic analysis that hyaluronic acid is a component of the C. neoformans capsule. The size of hyaluronic acid molecules is evaluated by gel filtration and transmission electron microscopy studies. Together, our results support that C. neoformans CPS1 encodes hyaluronic acid synthase and that its product, hyaluronic acid, plays a role as an adhesion molecule during the association of endothelial cells with yeast.

Indexed as

Amino Acid SequenceAnimalsBiological AssayCaenorhabditis elegansCryptococcus neoformansEscherichiaEvolution, MolecularGlucuronosyltransferaseGlycosyltransferasesHumansHyaluronan SynthasesMicroscopy, Electron, TransmissionMolecular Sequence DataSaccharomyces cerevisiaeVirulenceCPS1 protein, Cryptococcus neoformansGlucuronosyltransferaseGlycosyltransferasesHyaluronan Synthases

Identifiers

PMID17545316
PMCPMC1951127
OpenAlexW2112619233

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.