Microreviews, Review
How do yeast sense mitochondrial dysfunction?
Dmitry A. Knorre1, Svyatoslav S. Sokolov1, Anna N. Zyrina2, Fedor F. Severin1,3
Apart from energy transformation, mitochondria play important signaling roles. In yeast, mitochondrial signaling relies on several molecular cascades. However, it is not clear how a cell detects a particular mitochondrial malfunction. In our review we argue that in yeast the major known routes of mitochondrial signaling are moderated by non-mitochondrial inputs.
Chlamydia trachomatis Genital Infections
Catherine M. O’Connell and Morgan E. Ferone
Chlamydia trachomatis infections are the most commonly reported sexually transmitted bacterial infections in the US and globally. Ascending infection may result in infertility, ectopic pregnancy and chronic pelvic pain in some women. In this review we provide an overview of current knowledge regarding epidemiology, disease outcomes and effective treatment of chlamydial genital tract infection and explore potential mechanisms facilitating C. trachomatis infection of genital mucosa identified via bioinformatics and other molecular approaches.
Hepatitis B virus and its sexually transmitted infection – an update
Takako Inoue1 and Yasuhito Tanaka1,2
About 5% of the world’s population has chronic hepatitis B virus (HBV) infection, and nearly 25% of carriers develop chronic hepatitis, cirrhosis, and hepatocellular carcinoma. The purpose of this article is to provide up-to-date information on HBV and HBV infection as a major sexually transmitted infection.
Gonorrhea – an evolving disease of the new millennium
Stuart A. Hill, Thao L. Masters and Jenny Wachter
Neisseria gonorrhoeae (the gonococcus) is a Gram-negative diplococcus, an obligate human pathogen, and the etiologic agent of the sexually transmitted disease, gonorrhea. This review provides insight into the molecular epidemiology, virulence mechanisms, pathogenesis and therapeutic options.
Cryptococcus flips its lid – membrane phospholipid asymmetry modulates antifungal drug resistance and virulence
Erika Shor1, Yina Wang1, David S. Perlin1,2, and Chaoyang Xue1,2
This article comments on work published by Huang et al. (MBio, 2016), which reported that in the pathogenic fungus Cryptococcus neoformans loss of lipid flippase activity sensitized cryptococcal cells to multiple classes of antifungal drugs and abolished fungal virulence in murine models.
A novel component of the mitochondrial genome segregation machinery in trypanosomes
Anneliese Hoffmann1,2, Martin Jakob1, and Torsten Ochsenreiter1
This article comments on work published by Trikin et al. (PLoS Pathog, 2016), which described a new component of the mitochondrial genome segregation machinery in the protozoan parasite Trypanosoma brucei.
Bacterial genotoxin functions as immune-modulator and promotes host survival
R. Guidi1, L. Del Bell Belluz2, T. Frisan2
This article comments on work published by Del Bel Belluz et al. (PLoS Pathog, 2016), which demonstrated that the typhoid toxin of Salmonella enterica serovar Typhi esembles an immune-modulatory molecule rather than a toxic agent.
Breaking the bad: Bacillus blocks fungal virulence factors
October 30, 2017
This article comments on work published by Mayer & Kronstad (mBio, 2017), which identified the soil bacterium, Bacillus safensis as a potent inhibitor of virulence factor production by two major fungal pathogens of humans, Cryptococcus neoformans, and Candida albicans.
The integrated stress response in budding yeast lifespan extension
October 24, 2017
This article summarizes how the budding yeast Saccharomyces cerevisiae has been instrumental in unraveling the molecular and cellular determinants of aging, and how the induction of cellular stress responses has been associated with experimental lifespan extension, thus underscoring the value of yeast as a model for developing potential aging therapies for humans.
Macrophages as drivers of an opportunistic infection
September 13, 2017
This article comments on work published by Mesureur et al. (PloS Pathog, 2017), which shows that macrophages are essential for proliferation of B. cenocepacia in the host. This suggests a new paradigm for Bcc infections and urges the development of novel anti-infectious therapies to efficiently disarm these intrinsically antibiotic resistant facultative intracellular pathogens.
Exacerbating and reversing lysosomal storage diseases: from yeast to humans
August 25, 2017
This article summarizes the use of yeast models in advancing our understanding of lysosomal storage diseases (LSDs), where they have been instrumental in researching LSD mechanisms, screening for therapeutic compounds, and exploring genetic and gene-environment interactions relevant to diseases like Batten disease, cystinosis, and Niemann-Pick type C disease, as well as their connection to broader health issues such as viral infections and obesity.
Live fast, die fast principle in a single cell of fission yeast
August 13, 2017
This article comments on a recent study (Nakaoka and Wakamoto, PLoS Biol, 2017), which developed a microfluidics-based platform to track multiple single cell lineages until death.
Out with the old: Hsp90 finds amino acid residue more useful than co-chaperone protein
August 1, 2017
This article comments on work published by Zuehlke et al (Nat Commun, 2017), which demonstrates that the function of one co-chaperone in yeast is replaced by posttranslational modification (PTM) of a single amino acid within Hsp90 in higher eukaryotes.
Having your cake and eating it – Staphylococcus aureus small colony variants can evolve faster growth rate without losing their antibiotic resistance
August 1, 2017
This article comments on work published by Cao et al. (mBio, 2027), which shows that Staphylococcus aureus can produce small colony variants (SCVs) that are challenging to detect and lead to persistent infections due to mutations affecting respiration and ATP production, with recent findings indicating various evolutionary paths for SCVs to increase growth rate while maintaining antibiotic resistance, suggesting greater adaptability and clinical challenge.