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Vaccines inducing mucosal immunity may provide better protection from respiratory viruses. Here, Ykema et al. demonstrate the utility of a bivalent, mucosally delivered nanostructured lipid carrier-replicon vaccine for induction of mucosal and systemic immunity and protection against morbidity and mortality from H5N1 and H7N9 influenza.

Vibrio cholerae O1 outbreak strains are classified as Ogawa or Inaba serotypes, but the impact of serotype on pathogenicity is understudied. Here, the authors show that O1 antigen methylation in Ogawa strains promotes colonization and infectivity.

Rathmell and colleagues show that metabolic reprograming of regulatory T cells is associated with severity of critical illness in patients with and without sepsis.

CD44 expressed by fibroblastic reticular cells in secondary lymphoid organs regulates trafficking of dendritic cells, and thus has an essential role in the priming of T cells and the adaptive immune response.

Elevated levels of IL-33 induce the production of autoantibodies through an unknown mechanism. Here, the authors show that IL-33 disrupts splenic architecture and germinal center organization, causing an expansion of antibody-secreting plasmablasts and plasma cells. In multiple mouse models of inflammation, administration of IL-33 exacerbates the pathology, increasing the production of autoantibodies, whereas IL-33 blockade reverses autoantibody production in a model of lung inflammation.

Muscularis macrophages, housekeepers of enteric nervous system integrity and intestinal homeostasis, modulate α-synuclein pathology and neurodegeneration in models of Parkinson’s disease, and understanding the accompanying mechanisms could pave the way for early-stage biomarkers.

An alternative mating system, termed parasex, produces progeny with high levels of genotypic diversity and is able to fulfil the roles of meiosis when it is absent in the fungal pathobiont Candida albicans.

In the nucleus accumbens, acetylcholine boosts dopamine release to promote effortful behaviour.

Here the authors show that persistent antigen stimulation drives the generation of CD8⁺ tissue-resident exhausted T cells with distinct developmental origins, function and therapeutic responsiveness when compared to CD8⁺ tissue-resident memory T cells.

Neural circuits in adult mouse visual cortex are stabilized by astrocytes, which secrete CCN1, resulting in reduced plasticity and increased maturation of multiple cell types.

An in-depth analysis of tissue biopsies from patients with multiple myeloma and CAR T cell therapy-associated immune-related adverse events (CirAEs) after treatment with commercial BCMA-targeted CAR T cell therapy shows that CD4⁺ CAR T cells mediate off-tumor toxicities and that high CD4:CD8 ratio at apheresis, robust early CAR T cell expansion, ICANS and ciltacabtagene autoleuce treatment are independently associated with the development of CirAEs.

Allogeneic T cell therapies could be used in therapeutic applications because of their potential for ‘off-the-shelf’ access and standardised production. Here the authors have developed a multidimensional workflow profiling platform for EBV-specific T cell therapy and show that correlative biomarkers of T cell potency and effector function are associated with therapeutic effectiveness in xenogeneic mouse EBV-LCL models.

Here they demonstrate a therapeutic intervention elevating levels of CYP450-derived lipids to control the expansion of intermediate monocytes in tissue and peripheral blood, presenting a first in class therapeutic approach for treating chronic inflammatory disease.

Hunter et al. use RNA labelling to investigate RNA transfer between organs in mice. They show that RNA potentially moves en masse from liver to kidney and that this movement is augmented in acute liver injury, although the physiological relevance of the phenomenon is not yet known.

Whether high-order frontal lobe areas receive raw speech input in parallel with early speech areas in the temporal lobe is unclear. Here, the authors show that frontal lobe areas get fast low-level speech information in parallel with temporal lobe speech areas.

The potential roles of viruses in microbial-induced permafrost thaw, which is accelerated by climate change, are unclear. Here, Trubl et al. sample a permafrost thaw gradient and identify thousands of new viruses carrying genes with metabolic-related functions, which might influence the fate of stored carbon.

H5N1 avian influenza viruses caused an outbreak in dairy cattle. We show that the potential for avian viruses to replicate in cow cells varies across H5N1 evolution, suggesting that the risk of spillover into mammals differs between variants.

Here, as part of the Sherlock-Lung study, the authors profile the microbiomes of 940 lung cancers in never smokers finding no significant associations with demographic and clinical features, suggesting lung bacteria are unlikely to have a sizable role in lung cancer.

Roles of of viruses in ocean subsurface oxygen maxima are unclear. Here, the authors analyse Bermuda Atlantic Time Series data to show that viruses may drive SOM in stratified oceans by boosting nutrient recycling and phytoplankton productivity linking virus activity to oxygen buildup and a stronger microbial loop.

Adherent-invasive strains of E. coli are commonly isolated from patients with Crohn’s disease. Here, the authors show that an AIEC harbours a hybrid Type IV secretion system (T4SS) that mediates pilin polymerization and biofilm formation in vivo.

How the complex interplay between multiple nutrients within the microenvironment dictates potential sites of metastatic cancer growth is explored.

Glioblastoma is characterised by high levels of intratumoural heterogeneity and plasticity, hindering treatment. Here, the authors develop an analytical framework, scFOCAL, to predict the sensitivity of glioblastoma cell subpopulations to therapies based on reversal of disease transcriptional signatures to identify synergistic therapeutic combinations.

Mosquitoes are major vectors for the transmission of many serious pathogens. This study uses genome-wide CRISPR screens in the mosquito, Anopheles gambiae, to reveal new insights into mosquito fitness and the function of clodronate-liposome mediated immune cell ablation.

Human RIF1 protein protects cells from DNA replication stress, through mechanisms that remain uncertain. Here the authors demonstrate that the RIF1-Long isoform interacts with BRCA1 upon extended replication stress, enabling RAD51-dependent repair of broken replication forks.

Determinants of Vibrio cholerae transmission are incompletely understood. Here, the authors use an infant mouse model to show that events in the intestine govern inter-animal transmission and that bacterial motility along with cholera toxin-driven diarrhea are critical for pathogen spread.

Adjuvants are an important component of modern vaccines. Here, the authors employ a phenotypic screen of ~200k compounds and identify PVP-057, a TLR3 agonist with a simple scalable 3-step synthesis, as an adjuvant that induces durable humoral and cellular immunity to varicella-zoster virus (VZV) gE in mice.

β-glucuronidases produced by gut microbiota members mediate proteolytic activity in the gut via the production of unconjugated bilirubin, which is dysregulated in irritable bowel syndrome.

Progress in malaria control has stalled in recent years. Here, authors present a self-limiting gene drive, Male Drive Female Sterile (MDFS), which spreads dominant female sterility via fertile males and can eliminate mosquito populations in the lab, offering a promising tool for vector suppression.

Structural, genetic, functional and biochemical analyses of the complex flagellar motor of Campylobacter jejuni reveal structural adaptations with an ancient origin also found more widely across bacterial species, including elements exapted from the type IV pilus machinery.

Dopaminergic action prediction error signals are used by mice as a value-free teaching signal to reinforce stable sound–action associations in the tail of the striatum.

Analyses of layer 5 cortical pyramidal neurons in 10 mammalian species show that human neurons are distinct in that they do not follow the expected allometric relationship between neuron size and membrane conductance.

Lim and colleagues present the UK PROSECO study where they assess humoral and cellular immune responses to one, two and three doses of vaccination against SARS-CoV-2 in patients with B-cell malignancies in a prospective observational study.

Gelabert et al. examine genomic and archaeological data from Europe’s earliest farming communities in Central Europe (5500–5000 bce). They find differentiated genetic networks but no evidence of unequal access to resources linked to sex or kin.

Gastrointestinal distress is common among individuals with autism. Here, authors show that autism gene variants disrupt enteric neuron migration and cause gut dysmotility. They identify a common SSRI that can ameliorate this dysmotility in Xenopus.

A newly developed monoclonal antibody, MARV16, broadly neutralizes all Marburg virus isolates and provides effective protection in guinea pigs with Marburg virus disease.

Dietary protein influences metabolic health and ageing. Here Solon-Biet et al. show that, rather than having a direct toxic effect, dietary branched-chain amino acids (BCAAs) appear to induce hyperphagia, owing to an imbalance between BCAAs and other amino acids, which reduces lifespan as a consequence of obesity.

Using visible-light-induced crosslinking, a local stiffening approach is developed for ex vivo mouse and human lung tissue as an early lung injury model, directing epithelial cell mechanosensing, differentiation and nascent protein deposition.

Mantle cell lymphoma (MCL) is a form of B-cell non-Hodgkin lymphoma with a high degree of genetic and clinical heterogeneity. Here, using a multi-omics approach, the authors investigate genetic alterations in association with the tumour microenvironment to identify potential therapeutic vulnerabilities.

A previously unsampled deep lineage in central Argentina was discovered that had distinctive genetic drift by 8,500 bp and persisted as the main Native American ancestry component in the region up to the present day.

Galsky and colleagues report the results of a phase 1 clinical trial of anti-programmed cell death protein 1 ligand 1 atezolizumab in combination with PGV001, a personalized neoantigen vaccine, in participants with urothelial cancer.

How and to what extent oligodendrocytes (OLs) contribute to learning and cognition is not well understood. Here, the authors show that the performance of mice in working memory-dependent cognitive tasks depends on OL genesis and is proportional to the number of OL precursors and OLs generated during training.

Comparing infection routes and subsequent transmission of MPXV in the multimammate rat (Mastomys natalensis) indicates increased susceptibility, shedding and transmission via the genital mucosae.

At the mucosal interface of the gut and microbiome immune cells play pivotal roles to regulate between commensalism, colonisation and pathogenic invasion. Here, Lo et al. show CTLA-4 expression in innate lymphoid cells is linked to mucosal homeostasis in a microbiome dependent manner.

Russo et al. show that context-specific place cell assemblies support hippocampal integration of past experiences into future plans during goal-directed behavior and propose a biophysical mechanism behind the formation of goal dependent theta sequences.

Understanding how SARS-CoV-2 gains initial entry into the human body is a key step towards the development of prophylaxes and therapeutics for COVID-19. Here, the authors show that ACE2, the receptor for SARS-CoV-2, is abundantly expressed in the motile cilia of the human nasal and respiratory tract and is not affected by the use of angiotensin-converting enzyme inhibitors or angiotensin II receptor blockers.

Authors measure plasma proteins in a cohort of hospitalised patients presenting to the emergency department with suspected infection, revealing six discrete host response clusters that were driven by pathogen exposure and organ dysfunction, and had distinct clinical characteristics, hospital courses, and responses to treatment.

Here, using samples from ~1,100 individuals, the authors define the nasal microbiome linked to Staphylococcus aureus colonization, identifying seven communities- either S. aureus-dominated or dominated by other bacteria.

Here, the authors comparatively analyze the impact of three successful clinical preventive interventions against NEC in preterm, VLBW infants and demonstrate a major impact of especially probiotic-based strategies on the development and maturation of the gut microbiome.

Protein-mediated transport is implicated in trafficking fatty acids at contact sites of lipid droplets and mitochondria. Here, the authors use proteomics to catalogue the proteins at this contact site and report a mechanism of fatty acid transfer that regulates fatty acid oxidation and lipid homeostasis.