Commentary, Editorial

The long and winding road of reverse genetics in Trypanosoma cruzi

Miguel A. Chiurillo1 and Noelia Lander1

This Editorial provides a brief historic overview that highlights the strengths and weaknesses of the molecular strategies that have been developed to genetically modify Trypanosoma cruzi, emphasizing the future directions of the field.

Means of intracellular communication: touching, kissing, fusing

Anne Spang1

This work highlights different aspects of communication between organelles, including the importance of organellar contact sites.

Neuropathogenesis caused by Trypanosoma brucei, still an enigma to be unveiled

Katherine Figarella1

This Editorial addresses the meningo-encephalitic stage of Trypanosoma brucei infection and the resultig neuropathogenesis as well as the impact that the application of tools developed in the last years in the field of neuroscience will have on the study of neglected tropical diseases.

Lichens – growing greenhouses en miniature

Martin Grube1

This commentary article provides an overview on different aspects of lichen biology and the remarkable symbiotic association between fungi and algae.

Regulation of the mitochondrial permeability transition pore and its effects on aging

Damiano Pellegrino-Coppola1

Aging is linked to mitochondrial function, with the mitochondrial permeability transition pore (mPTP) playing a key role. Yeast is a useful model for studying how mPTP affects cell survival, aging, and related diseases.

Fungal infections in humans: the silent crisis

Katharina Kainz1, Maria A. Bauer1, Frank Madeo1-3 and Didac Carmona-Gutierrez1

This article highlights the growing global threat of fungal infections - exacerbated by rising drug resistance and medical practices - and emphasizes the urgent need for intensified research to develop more effective antifungal strategies.

Digesting the crisis: autophagy and coronaviruses

Didac Carmona-Gutierrez1, Maria A. Bauer1, Andreas Zimmermann1,2, Katharina Kainz1,
Sebastian J. Hofer1, Guido Kroemer3-7 and Frank Madeo1,2,8

This article reviews the multifaceted role of autophagy in antiviral defense and highlights how coronaviruses, including SARS-CoV-2, interact with this pathway, raising the possibility that targeting autophagy could offer novel therapeutic strategies against COVID-19.

Raman-based sorting of microbial cells to link functions to their genes

Kang Soo Lee1, Michael Wagner2,3 and Roman Stocker1

In this article, the authors comment on the study "An automated Raman-based platform for the sorting of live cells by functional properties" by Lee et al. (Nat Microbiol, 2019), which presents a high-throughput optofluidic platform that integrates Raman microspectroscopy and microfluidics to accurately link microbial phenotypes to genotypes within complex communities, enabling efficient functional sorting and analysis of microbiome members.

Viral attenuation by Endonuclease G during yeast gametogenesis: insights into ancestral roles of programmed cell death?

Jie Gao1, Sabrina Chau1 and Marc D. Meneghini1

This article relates to the study "Meiotic viral attenuation through an ancestral apoptotic pathway" by Gao et al. (Proc Natl Acad Sci, 2019), which shows that programmed cell death may have evolved as a viral defence mechanism, as demonstrated by yeast studies showing that the mitochondrial nuclease Nuc1 translocates to the cytosol during meiosis to attenuate dsRNA viruses, linking viral control to meiotic cell death processes.

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Transceptors as a functional link of transporters and receptors

March 1, 2017

A relative newcomer in environment sensing are the so called transceptors, membrane proteins that possess both solute transport and receptor-like signaling activities. Now, the transceptor concept is further enlarged to include micronutrient sensing via the iron and zinc high-affinity transporters of Saccharomyces cerevisiae.

Using microbes as a key tool to unravel the mechanism of autophagy and the functions of the ATG proteins

December 30, 2016

Microbes have served to discover and characterize unconventional functions of the ATG proteins, which are uncoupled from their role in autophagy. In our recent study, we have taken advantage of viruses as a screening tool to determine the extent of the unconventional functions of the ATG proteome and characterize one of them.

Autophagy: one more Nobel Prize for yeast

December 5, 2016

The recent announcement of the 2016 Nobel Prize in Physiology or Medicine, awarded to Yoshinori Ohsumifor the discoveries of mechanisms governing autophagy, underscores the importance of intracellular degradation and recycling. Here we provide a quick historical overview that mirrors both the importance of autophagy as a conserved and essential process for cellular life and death as well as the crucial role of yeast in its mechanistic characterization.

The curious case of vanishing mitochondria

September 30, 2016

Due to their involvement in the energy metabolism, mitochondria are essential for most eukaryotic cells. Microbial eukaryotes living in low oxygen environments possess reduced forms of mitochondria, namely mitochondrion-related organelles (MROs). Recently, the first microbial eukaryote with neither mitochondrion nor MRO was characterized – Monocercomonoides sp. The discovery of such bona fide amitochondriate eukaryote broadens our knowledge about the diversity and plasticity of eukaryotic cells and provides a substantial contribution to our understanding of eukaryotic cell evolution.

Sexually transmitted infections: old foes on the rise

September 4, 2016

Sexually transmitted infections (STIs) are commonly spread via sexual contact. It is estimated that one million STIs are acquired every day worldwide. Besides their impact on sexual, reproductive and neonatal health, they can cause disastrous and life-threatening complications if left untreated. In addition to this personal burden, STIs also represent a socioeconomic problem, deriving in treatment costs of tremendous proportions. Despite a substantial progress in diagnosis, treatment and prevention, the incidence of many common STIs is increasing, and STIs continue to represent a global public health problem and a major cause for morbidity and mortality. With this Special Issue, Microbial Cell provides an in-depth overview of the eight major STIs, covering all relevant features of each infection.

Phosphatidylthreonine: An exclusive phospholipid regulating calcium homeostasis and virulence in a parasitic protist

May 1, 2016

This article comments on work published by Kuchipudi et al. (Microbial Cell, 2016), which describes the role of phohsphatidylthreonine in the regulation of calcium homeostasis and virulence in the protozoan parasite Toxoplasma gondii.

What’s old is new again: yeast mutant screens in the era of pooled segregant analysis by genome sequencing

April 4, 2016

This article comments on work published by Den Abt et al. (Microbial Cell, 2016), which identified genes involved in ethyl acetate formation in a yeast mutant screen based on a new approach combining repeated rounds of chemical mutagenesis and pooled segregant analysis by whole genome sequencing.

Gearing up for survival – HSP-containing granules accumulate in quiescent cells and promote survival

March 6, 2016

This article comments on work published by Lee et al. (Microbial Cell, 2016), which reports that distinct granules are formed in quiescent and non-quiescent cells, which determines their respective cell fates.

Groupthink: chromosomal clustering during transcriptional memory

November 26, 2015

In this article, the authors comment on the study "NO1 transcriptional memory leads to DNA zip code-dependent interchromosomal clustering." by Brickner et al. (Microbial Cell, 2015), discussing the importance and molecular mechanisms of chromosomal clustering during transcriptional memory.

Starting with a degron: N-terminal formyl-methionine of nascent bacterial proteins contributes to their proteolytic control

October 4, 2015

In this article, the author comments on the study "Formyl-methionine as a degradation signal at the N-termini of bacterial proteins." by Piatkov et al. (Microbial Cell, 2015), discussing a novel N-terminal degradation signal (N-degron) that targets nascent proteins for degradation in Escherichia coli by a new branch of the bacterial N-end rule pathway, termed the fMet/N-end rule pathway