Research, Research Articles

Forced association of SARS-CoV-2 proteins with the yeast proteome perturb vesicle trafficking

Cinzia Klemm1,#, Henry Wood1,#, Grace Heredge Thomas1,#, Guðjón Ólafsson1,2, Mara Teixeira Torres1 and Peter H. Thorpe1

This work demonstrates that the yeast Synthetic Physical Interactions method is a rapid way to identify potential functions of ectopic viral proteins.

Airborne bacteria in show caves from Southern Spain

Irene Dominguez-Moñino1, Valme Jurado1, Miguel Angel Rogerio-Candelera1, Bernardo Hermosin1 and Cesareo Saiz-Jimenez1

This study analyzes the factors conditioning the diversity of airborne bacteria recorded in three Andalusian show caves, subjected to different managements.

Landscapes and bacterial signatures of mucosa-associated intestinal microbiota in Chilean and Spanish patients with inflammatory bowel disease

Nayaret Chamorro1,#, David A. Montero1,2,#, Pablo Gallardo3, Mauricio Farfán3, Mauricio Contreras4, Marjorie De la Fuente2, Karen Dubois2, Marcela A. Hermoso2, Rodrigo Quera5,6, Marjorie Pizarro-Guajardo7,8,9, Daniel Paredes-Sabja7,8,9, Daniel Ginard10, Ramon Rosselló-Móra11 and Roberto Vidal1,8,12

This study investigates the landscapes and alterations of mucosa-associated intestinal microbiota in patients with inflammatory bowel diseases, which cause chronic inflammation of the gut, including ulcerative colitis and Crohn’s disease.

Genome, transcriptome and secretome analyses of the antagonistic, yeast-like fungus Aureobasidium pullulans to identify potential biocontrol genes

Maria Paula Rueda-Mejia1, Lukas Nägeli1, Stefanie Lutz2, Richard D. Hayes3, Adithi R. Varadarajan2, Igor V. Grigoriev3,4, Christian H. Ahrens2,5 and Florian M. Freimoser1

This study highlights the value of a sequential approach starting with genome mining and consecutive transcriptome and secretome analyses in order to identify a limited number of potential target genes for detailed, functional analyses in Aureobasidium pullulans.

Barcode sequencing and a high-throughput assay for chronological lifespan uncover ageing-associated genes in fission yeast

Catalina A. Romila1,#, StJohn Townsend1,2,#, Michal Malecki1,3, Stephan Kamrad1,2,4, María Rodríguez-López1, Olivia Hillson1, Cristina Cotobal1, Markus Ralser2,5 and Jürg Bähler1

This work presents two approaches to study chronological lifespan (CLS) for medium- to high-throughput applications, a method for Bar-seq to identify mutants showing altered CLS and a novel medium-throughput colony-forming units assay that can be largely automated by robotics.

Proanthocyanidin-enriched cranberry extract induces resilient bacterial community dynamics in a gnotobiotic mouse model

Catherine C. Neto1,2,#, Benedikt M. Mortzfeld3,#, John R. Turbitt1,2, Shakti K. Bhattarai3, Vladimir Yeliseyev4, Nicholas DiBenedetto4, Lynn Bry4 and Vanni Bucci2,3

This study investigates the effect of a water-soluble, proanthocyanidin-rich cranberry juice extract on the short-term dynamics of a human-derived bacterial community in a gnotobiotic mouse model.

Dry biocleaning of artwork: an innovative methodology for Cultural Heritage recovery?

Giancarlo Ranalli1, Pilar Bosch-Roig2, Simone Crudele1, Laura Rampazzi3,4, Cristina Corti3 and Elisabetta Zanardini5

This work proposes an innovative methodology based on applied biotechnology for the recovery of altered stonework: the "dry biocleaning", which envisages the use of dehydrated microbial cells without the use of free water or gel-based matrices.

Aeration mitigates endoplasmic reticulum stress in Saccharomyces cerevisiae even without mitochondrial respiration

Huong Thi Phuong1, Yuki Ishiwata-Kimata1, Yuki Nishi1, Norie Oguchi1, Hiroshi Takagi1 and Yukio Kimata1

This work demonstrates a scenario, in which aeration acts beneficially on Saccharmyces cerevisiae cells even under fermentative conditions.

A novel BR-SMAD is required for larval development in barber’s pole worm Haemonchus contortus

Fangfang Li1, Peixi Qin1, Lisha Ye1, Nishith Gupta1,2,3 and Min Hu1

The herein presented results show a BMP-like receptor-regulated SMAD in Haemonchus contortus that is required for larval differentiation and underscore an adaptive functional repurposing of BMP-signaling in parasitic worms.

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Polyadenylated versions of small non-coding RNAs in Saccharomyces cerevisiae are degraded by Rrp6p/Rrp47p independent of the core nuclear exosome

May 22, 2024

In this investigation, we unveiled a novel functional role of the major nuclear 3′→5′ exoribonuclease, Rrp6p, and its cofactor Rrp47p in the degradation of polyadenylated versions of several mature sncRNAs, including 5S, 5.8S rRNAs, all sn- and some select snoRNAs in the baker’s yeast S. cerevisiae.

Exploring carbon source related localization and phosphorylation in the Snf1/Mig1 network using population and single cell-based approaches

May 16, 2024

In this work we set out to explore the relationship between the subcellular localization and regulation of kinases in the context of carbon source signaling. The data presented in this paper reinforce the notion that not only the activation/inactivation of kinases but also their subcellular localization and that of their targets influence fate decisions in response to environmental changes.

A Modular Cloning Toolkit for the production of recombinant proteins in Leishmania tarentolae

April 30, 2024

Modular Cloning (MoClo) is based on libraries of standardized genetic parts that can be directionally assembled via Golden Gate cloning in one-pot reactions into transcription units and multigene constructs. We established a MoClo toolkit and exemplified its application for the production of recombinant proteins in L. tarentolae.

A metagenomic approach to unveil the association between fecal gut microbiota and short-chain fatty acids in diarrhea caused by diarrheagenic Escherichia coli in children

April 30, 2024

Diarrheagenic Escherichia coli (DEC) is the main cause of diarrhea in children under five years old. The virulence of DEC is tightly regulated by environmental signals influenced by the gut microbiota and its metabolites. Our results increase the knowledge of the association between short chain fatty acids during diarrhea and changes in the microbiota composition associated with the presence of DEC pathogens.

The effect of multiple sclerosis therapy on gut microbiota dysbiosis: a longitudinal prospective study

April 6, 2024

The gut microbiota, a complex ecosystem with various immune functions, plays a significant role in MS, and its response to different treatments is highlighted in this study. In clinical practice, maintaining a healthy microbiota is crucial for individuals with MS.

Comparison of microbial communities and the profile of sulfate-reducing bacteria in patients with ulcerative colitis and their association with bowel diseases: a pilot study

March 14, 2024

Considerable evidence has accumulated regarding the molecular relationship between gut microbiota (GM) composition and the onset (clinical presentation and prognosis) of ulcerative colitis UC. Our findings highlight, among other observations, significant variations in the gut microbial composition among patients with varying disease severity and activity.

Replicative aging in yeast involves dynamic intron retention patterns associated with mRNA processing/export and protein ubiquitination

February 27, 2024

Saccharomyces cerevisiae has yielded relevant insights into some of the basic mechanisms of organismal aging. Among these are genomic instability, oxidative stress, caloric restriction and mitochondrial dysfunction. Our work uncovers a previously unexplored layer of the transcriptional program of yeast aging and, more generally, expands the knowledge on the occurrence of alternative splicing in baker´s yeast.

Quantifying yeast lipidomics by high-performance thin-layer chromatography (HPTLC) and comparison to mass spectrometry-based shotgun lipidomics

February 21, 2024

Lipidomic analysis in diverse biological settings has become a frequent tool to increase our understanding of the processes of life. Here we describe a method to analyse basic lipidomics in yeast using HPTLC and offer comparison to measurement of the same samples with MS-based shotgun lipidomics.

A cobalt concentration sensitive Btu-like system facilitates cobalamin uptake in Anabaena sp. PCC 7120

February 20, 2024

Metal homeostasis is central to all forms of life, as metals are essential micronutrients with toxic effects at elevated levels. Our results provide novel information on the uptake of cobalamin and the regulation of the cellular cobalt content in cyanobacteria.

Predictable regulation of survival by intratumoral microbe-immune crosstalk in patients with lung adenocarcinoma

February 19, 2024

Intratumoral microbiota can regulate the tumor immune microenvironment (TIME) and mediate tumor prognosis by promoting inflammatory response or inhibiting anti-tumor effects. Our study demonstrated that intratumoral microbiota-immune crosstalk was strongly associated with prognosis in LUAD patients, which would provide new targets for the development of precise therapeutic strategies.

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