Biological and genomic analyses of , a novel potential fungal pathogen closely related to (syn. ) and .

New Microbes New Infect

Shanghai Institute of Infectious Disease and Biosecurity, Department of Infectious Diseases, Shanghai Key Laboratory of Infectious Diseases and Biosafety Emergency Response, National Medical Center for Infectious Diseases, Huashan Hospital, State Key Laboratory of Genetic Engineering, School of Life Science, Fudan University, Shanghai, PR China.

Published: December 2024

AI Article Synopsis

  • - A new species of fungus, identified from a COVID-19 patient's sputum, has been discovered, belonging to the genus *Candida*.
  • - This novel species is closely related to other known fungal pathogens but shows notable genetic differences and chromosomal rearrangements compared to them.
  • - Although it does not thrive at human body temperature, it has been found to increase in lung tissue during a mouse infection model, suggesting it may act as an opportunistic pathogen.

Article Abstract

Several human fungal pathogens, including drug-resistant and species of the complex, have emerged over the past two decades, posing new threats to human health. In this study, we report the isolation and identification of a novel species belonging to the genus , herein named as , from a clinical sputum sample of a COVID-19 patient. is phylogenetically closely related to fungal pathogens (syn. ) and . When grown on CHROMagar Plus medium, exhibited a similar coloration to strain CBS12372. was able to develop weak filaments on CM medium. Although and are phylogenetically closely related, comparative genomic and synteny analyses indicated significant chromosomal rearrangements between the two species. Although could not grow at 37 °C under regular culture condition, an increased fungal burden in the lung tissue of a mouse systemic infection model implies that it could be a potential opportunistic pathogenic yeast in humans.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11525147PMC
http://dx.doi.org/10.1016/j.nmni.2024.101506DOI Listing

Publication Analysis

Top Keywords

fungal pathogens
8
phylogenetically closely
8
biological genomic
4
genomic analyses
4
analyses novel
4
novel potential
4
fungal
4
potential fungal
4
fungal pathogen
4
pathogen closely
4

Similar Publications

Rapamycin is an important natural macrolide antibiotic with antifungal, immunosuppressive and antitumor activities produced by Streptomyces rapamycinicus. However, their prospective applications are limited by low fermentation units. In this study, we found that the exogenous aromatic amino acids phenylalanine and tyrosine could effectively increase the yield of rapamycin in industrial microbial fermentation.

View Article and Find Full Text PDF

Fetal growth restriction (FGR) is a common complication of pregnancy, which seriously endangers fetal health and still lacks effective therapeutic targets. Clostridium difficile (C. difficile) is associated with fetal birth weight, and its membrane vesicles (MVs) are pathogenic vectors.

View Article and Find Full Text PDF

Microbiome and Mucosal Immunity in the Intestinal Tract.

In Vivo

December 2024

Department of Gynecology and Gynecological Oncology, Research Laboratories, University Hospital Bonn, Bonn, Germany

The human bowel is exposed to numerous biotic and abiotic external noxious agents. Accordingly, the digestive tract is frequently involved in malfunctions within the organism. Together with the commensal intestinal flora, it regulates the immunological balance between inflammatory defense processes and immune tolerance.

View Article and Find Full Text PDF

The ApxIVA protein belongs to a distinct class of a "clip and link" activity of Repeat-in-ToXin (RTX) exoproteins. Along with the three other pore-forming RTX toxins (ApxI, ApxII and ApxIII), ApxIVA serves as a major virulence factor of Actinobacillus pleuropneumoniae, the causative agent of porcine pneumonia. The gene encoding ApxIVA is located on a bicistronic operon downstream of the orf1 gene and is expressed exclusively under in vivo conditions.

View Article and Find Full Text PDF

Dynamics of immune responses following duck Tembusu virus infection in adult laying ducks reveal the effect of age-related immune variation on disease severity.

Poult Sci

December 2024

Department of Veterinary Microbiology, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand, 10330; Center of Excellence for Emerging and Re-emerging Infectious Diseases in Animals (CUEIDAs), Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand, 10330; Center of Excellence in Animal Vector-Borne Diseases, Veterinary Parasitology Unit, Department of Veterinary Pathology, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand, 10330; Center of Excellence of Systems Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand, 10330. Electronic address:

Duck Tembusu virus (DTMUV), an emerging avian pathogenic flavivirus, is notably associated with neurological disorders and acute egg drop syndrome in ducks. We previously demonstrated that the susceptibility of ducks to DTMUV infection varies significantly with age, with younger ducks (4-week-old) exhibiting more severe disease than older ducks (27-week-old). However, the immunological mechanisms underlying these age-related differences in disease severity remain unclear.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!