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Here the authors show that ventrally derived oligodendrocytes (OLs) can myelinate areas usually populated by dorsally derived OLs but cannot functionally compensate, as animals populated only by ventrally derived OLs show locomotor and cognitive deficits.

Within gastrointestinal tissues, tuft cells, a rare population of chemo-sensory epithelial cells, can promote the activation of type 2 innate lymphoid cells (ILC2s). Here the authors show that tuft cells and ILC2s are increased during gastric cancer development and that the pharmacologic inhibition of tuft cell derived IL25 or ILC2-produced IL13 reduces gastric tumor growth.

Activity-dependent oligodendroglial plasticity contributes to neuronal functions. Here the authors show that adaptive oligodendrocyte progenitor cell responses are disrupted in neurofibromatosis 1, impairing oligodendroglial dynamics and resulting in motor learning deficits in Nf1-deficient and Nf1-mutant mice.

Mapping the operational chemical, physical and electronic structure of an oxygen evolution electrocatalyst at the nanoscale links the properties of the material with the observed oxygen evolution activity.

Grune et al. show that hypokalemic mice develop spontaneous ventricular tachycardia after myocardial infarction, and they use this model to dissect the role of immune cells in arrhythmia: neutrophils increase ventricular tachycardia, partly by promoting reactive oxygen species production, whereas efferocytic macrophages play a protective role.

Itkin et al. identify a role for Fli-1 in hematopoietic stem cell activation during regenerative hematopoiesis. They show that Fli-1 coordinates hematopoietic stem cells to stimulate niche-derived Notch1 feedback signals for demand-needed hematopoietic cell output.

A study in a mouse model of obesity and prediabetes demonstrates that recruitment of macrophages to nerves has a protective role in diet-induced peripheral neuropathy.

Through circuit dissection in juvenile, adolescent and adult mice, Klune, Goodpaster and colleagues reveal multiple developmental switches in mPFC–NAc and mPFC–BLA pathways that underlie developmental transitions in threat avoidance behavior.

The Hedgehog signalling gradient is established by dynamic signalling filopodia (cytonemes). Here, the authors show that EGF signalling may regulate cytoneme dynamics by maintaining basal plasma membrane levels of the Hedgehog co-receptor Ihog in the wing disc epithelium.

An analysis of the impact of logging intensity on biodiversity in tropical forests in Sabah, Malaysia, identifies a threshold of tree biomass removal below which logged forests still have conservation value.

Peer-to-peer energy trading can foster participation in the energy transition, but little is understood about prosumer preferences and their effect on the grid. Pena-Bello et al. use an online experiment among German homeowners to study decision-making strategies and simulate their impact on the operation of an energy community.

Mouse models of NF1-associated optic pathway glioma show that tumour initiation and growth are driven by aberrantly high levels of NLGN3 shedding in the optic nerve in response to retinal neuron activity.

Haematopoiesis has high clonal diversity up to about 65 years of age, after which diversity drops precipitously owing to positive selection acting on a handful of clones that expand exponentially throughout adulthood.

GDF-15 is a cytokine regulating food intake and a potential therapeutic target for treating obesity. Here, the authors show that macrophage infiltration in adipose tissue increases GDF-15 during obesity and type 2 diabetes, and hepatocyte stress further increases its levels when developing MASH.

A comparison of fetal hemoglobin gene editing strategies using human sickle cell disease donor cells and in vivo transplantation finds that adenine base editing of the –175A>G site in the γ-globin gene promoters results in durable and potent expression.

The aryl hydrocarbon receptor regulates the expression of genes involved in many cell processes and its dysregulation has been implicated in different diseases. Here, the authors identify dietary monoterpenoid carvone as an atypical non-competitive antagonist of human aryl hydrocarbon receptor and demonstrate that it can protect against ultraviolet skin damage in female mice.

Planar polarity in the Drosophila pupal wing is oriented by tissue stress but the mechanisms underlying this connection remain unclear. Here they show a crucial role for cell flow gradients in promoting planar polarity protein turnover and aligning proximodistal polarity.

Anthropogenic stressors affect many aspects of marine organismal health. Here, the authors expose surgeonfish to temperature and pesticide stressors and show that the stressors, separately and in combination, have adverse effects on thyroid signaling, which disrupts several sensory systems and important predation defenses.

Fires triggered by climate change threaten plant diversity in many biomes. Here the authors investigate how the catastrophic fires of 2019–2020 affected the vascular flora of SE Australia. They report that 816 species were highly impacted, including taxa of biogeographic and conservation interest.

Neurodevelopmental disorders normally arise from intrinsic brain abnormality. Here the authors show that a motor-learning deficit in 22q11 deletion syndrome may arise from improper development of the skull structure housing a part of the cerebellum.

Animal gut microbiomes are fairly stable over time despite large daily fluctuations in diet and introductions of environmental bacteria. Here the authors report that fruit flies maintain the stability of their microbiome in part through a physical niche in the esophagus.

This study investigates the average genome size of planktonic prokaryotes across tropical and polar oceans and down to the hadal realm. Using hundreds of metagenomes of marine microorganisms, genome size was found to be highest in the perennially cold polar ocean, suggesting that environmental factors influence genome size selection and the ecological strategies of marine microbes.

G49, a dual glucagon/glucagon-like peptide-1 receptor agonist, triggers an inter-organ crosstalk between adipose tissue, pancreas and liver, leading to brown fat activation with the final outcomes of increased energy expenditure and body weight loss.

The absence of an objective way of assessing freezing of gait in Parkinson’s Disease hinders research and care. A machine-learning contest using wearable sensor data delivered detection algorithms with high precision and identified time-of-day effects.

The impact of phage predation on spreading antimicrobial resistance is unclear in the context of its effects on microbial community spatial organization. Here, the authors show that phage predation can promote the spread of plasmid-encoded antibiotic resistance by increasing microbial spatial intermixing.

A global dataset of the satellite-tracked movements of pelagic sharks and fishing fleets show that sharks—and, in particular, commercially important species—have limited spatial refuge from fishing effort.

The regulation of energy homeostasis by centrally-produced GLP-1 is not yet fully understood. Here, authors show that GLP-1 neuronal circuitry in the olfactory bulb reduces food intake and enhances insulin secretion in obese mice. The increase in insulin secretion is mediated by a GABA-dependent relay in the paraventricular hypothalamus and decreased sympathetic nerve activity.

The p53 target FBP1 is elevated in senescent-like metabolic-dysfunction-associated steatohepatitis hepatocytes but suppressed through promoter hypermethylation and proteasomal degradation in most human hepatocellular carcinomas.

Recessive dystrophic epidermolysis bullosa (RDEB) is a severe blistering condition caused by pathogenic variants in the COL7A1 gene and may present with different disease endotypes. In this study, the authors characterise a cohort of RDEB adults to highlight variations in immune cell phenotypes and metabolic profiles, particularly in T cells and NK cells.

Siddiqi et al. identified lesion locations that reduced probability of PTSD. These were connected to a brain circuit in which increased connectivity was associated with PTSD, thus revealing a PTSD target circuit for therapeutic brain stimulation.

Mucopolysaccharidoses (MPS) are inherited metabolic disorders caused by enzyme deficiencies leading to glycosaminoglycan accumulation and systemic degenerative disease. Here, the authors show that iPSC-derived microglia progenitors can reduce glycosaminoglycan accumulation and prevent behavioral deficits in MPS mouse models.

Bacteria expressing an anti-tumor cytokine act as a potent cancer immunotherapy.

Murine models of obesity suggest that decreases in the adipose tissue regulatory T cell compartment may contribute to insulin resistance, but how this corresponds in the human clinical context is less well understood. Here the authors propose a role for interferon gamma in shrinking the adipose tissue regulatory T cell compartment seen in human obesity and assess the alterations seen during induction of dietary changes.

Parks, Schneider et al. show that brain states like sleep and wake can be reliably detected from milliseconds of neural activity in local regions in mice. Regions can briefly switch states independently, coinciding with fleeting behavioral changes.

Whole-genome sequencing analysis of individuals with primary immunodeficiency identifies new candidate disease-associated genes and shows how the interplay between genetic variants can explain the variable penetrance and complexity of the disease.

Brain function requires the formation of diverse and specific synapses. The authors show that the molecular code specifying excitatory connectivity on Purkinje cells evolves in an input-specific manner with postnatal circuit maturation.

Hong et al. show that activation of the medial prefrontal cortex induces REM sleep via its projections to the lateral hypothalamus, thus demonstrating a critical role of the cortex in the regulation of REM sleep.

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.