Mostly Microbes and Infection - by David Ojcius

  Highlights • ANDV can be isolated in cell culture only in the absence of neutralizing antibodies. • The monitoring of close contacts of ANDV cases allows to identify prospective cases. • We isolated a new ANDV human strain from an early blood sample of a secondary case. • CHI-Hu13724 is a different haplotype from the previous ANDV reference strains. • Isolation of currently zoonotic ANDV strains helps the study of viral pathogenicity.

Highlights • A classically anaerobic pathogen creates and thrives in a localized oxidative niche • BFT rewires epithelial metabolism from oxidative phosphorylation to fermentation • Host metabolic rewiring increases lactate and oxygen in the ETBF niche • BFT enables ETBF to adapt to this oxidative niche and promote colonization

  Highlights • The transition from a planktonic to a sessile lifestyle in  Anabaena  sp. PCC 7120 is driven by a massive transcriptomic reprogramming involving 17.7% of the genome. • Sessile growth involves cell envelope remodeling and lower anabolic activity. • While nitrogen deficiency and salinity promote biofilm formation, iron deficiency exerts contrasting effects on sessile development. • Stress-adaptation pathways are directly linked to biofilm development.

  ABSTRACT Deoxyribonucleic acid (DNA) is naturally contained within the mitochondria and nucleus of cells. DNA localized outside of these areas is generally considered to constitute damage-associated molecular patterns (DAMP) that trigger innate immune responses. The variety of these immune-stimulatory nucleic acids, coupled with the variety of proteins known to interact with DNA DAMPS and to act as sensors or regulators, is an important layer of regulation that defines the nature and breadth of inflammatory responses within a given cell or tissue. In this review, we describe the various DNA substrates that co-exist in cells, how they are sensed, and what regulates their cytoplasmic availability and recognition. We subsequently discuss how this complexity may dictate tissue-specific immune response and suggest that a more integrated view of the interconnection between pathways is necessary in order to define molecular targets for treatment intervention in inflammatory pathologies....

  Highlights • Climate change and environmental stressors are major drivers affecting global food security and agricultural sustainability. • Microbial communities play a central role in nutrient cycling, plant health, and ecosystem resilience. • Climate variability alters microbial diversity, functions, and plant–microbe interactions. • Beneficial microorganisms enhance crop tolerance to abiotic and biotic stresses. • Microbiome-based strategies offer sustainable alternatives to chemical inputs in agriculture. • Advances in microbial genomics enable the exploration and application of microbial diversity. • Biological control agents represent eco-friendly solutions for plant disease management. • Integrating microbial taxonomy, ecology, and biotechnology is key to climate-resilient food systems.

  Highlights • H1/H3 cross-reactive head antibodies were isolated after seasonal flu vaccination • These cross-subtype antibodies target a conserved HA epitope involving residue 145 • Antibodies targeting this epitope were enriched in people born in the 1990s • H1N1s recently acquired a substitution that abrogated binding of these antibodies