ArticleInfection and immunity2004
Growth, virulence, and immunogenicity of Listeria monocytogenes aro mutants.
Article in Infection and immunity, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 59 papers.
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.
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.
Who cites it
59 citing papers in PubMed, 97 citations in OpenAlex.
- Three metabolic pathways replenishing the one-carbon pool collectively support growth and virulence ofeLife · 2026Article
- Understanding the role of pyruvate dehydrogenase inInfection and immunity · 2026Article
- The role of cytochrome oxidases in bacterial virulence.Infection and immunity · 2026Review
- Review
- Listeria monocytogenes: from a saprophytic to a cytosolic virulent pathogen.World journal of microbiology & biotechnology · 2025Review
- Determinants of bacterial survival and proliferation in blood.FEMS microbiology reviews · 2024Review
- Article
- Article
- To breathe or not to breathe?eLife · 2022Article
- An Evolutionary Conservation and Druggability Analysis of Enzymes Belonging to the Bacterial Shikimate Pathway.Antibiotics (Basel, Switzerland) · 2022Article
- Article
- Listeria monocytogenes MenI Encodes a DHNA-CoA Thioesterase Necessary for Menaquinone Biosynthesis, Cytosolic Survival, and Virulence.Infection and immunity · 2021Article
- Genome-Wide Assessment of Streptococcus agalactiae Genes Required for Survival in Human Whole Blood and Plasma.Infection and immunity · 2020Article
- Review
- The Uropathogenic Specific Protein GeneMicroorganisms · 2020Article
- Article
- Mutation of the Transcriptional Regulator YtoI Rescues Listeria monocytogenes Mutants Deficient in the Essential Shared Metabolite 1,4-Dihydroxy-2-Naphthoate (DHNA).Infection and immunity · 2019Article
- Requirement ofMicroorganisms · 2019Article
- Metabolism of the Gram-Positive Bacterial PathogenMicrobiology spectrum · 2019Review
- Artificial Selection for Pathogenicity Mutations inInfection and immunity · 2019Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
9 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Mutants of Listeria monocytogenes with deletions in genes of the common branch of the biosynthesis pathway leading to aromatic compounds were constructed as possible virulence-attenuated carrier strains for protein antigens or vaccine DNA. aroA, aroB, and in particular aroE mutants showed strongly reduced growth rates in epithelial cells and even in rich culture media. The metabolism of the aro mutants under these conditions was predominantly anaerobic. Aerobic metabolism and a wild-type growth rate were, however, regained upon the addition of vitamin K2, suggesting that the aro mutants are deficient in oxidative respiration due to the lack of menaquinone. Replication of the aro mutants in the host cell's cytosol and cell-to-cell spread were drastically slowed down, and all aro mutants showed high virulence attenuation in mice, i.e., the 50% lethal dose in BALB/c mice was increased at least 10(4)-fold for the aroA, aroB, and aroA/B mutants and >10(5)-fold for the aroE mutant compared to the parent strain. Nevertheless, mice preimmunized with aro mutant bacteria elicited good T-cell response and full protection against a subsequent challenge with the virulent wild-type strain. A total of 5 x 10(6) aroA, aroB, and aroA/B mutant bacteria were sufficient to obtain a protective T-cell response, while 5 x 10(8) aroE or aroA/E mutants were necessary to achieve comparable numbers of antigen-specific T cells. These numbers were well tolerated without causing any signs of disease, indicating that Listeria strains with deletions in genes of the basic branch of the aromatic amino acid pathway could be useful vaccine carriers for inducing T-cell immunity.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
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.