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Human microglia transplanted in the mouse brain mount a multipronged response to amyloid-β pathology, displaying unique transcriptional states. Alzheimer’s disease risk genes are differentially regulated across cell states and profoundly alter microglial function.
The role of TREM1 in neurodegenerative diseases is unclear. Here the authors show that TREM1 promotes cognitive decline in aging and in the context of amyloid pathology in a mouse model of Alzheimer disease.
Brain region-specific oligodendrocyte population dynamics are unclear. Here the authors implement long-term in vivo three-photon imaging to determine those dynamics in the cortical and subcortical areas in the living intact and demyelinated adult mouse brain.
Oligodendrocytes are vulnerable to chemical toxicity during development. However, few environmental chemicals have been identified as potential hazards. Here, the authors discover chemicals in common household products as harmful to oligodendrocyte development.
The authors find that Piezo1 stimulation enhances meningeal lymphatics and boosts CSF drainage to treat hydrocephalus and ventriculomegaly, showing promise in Down syndrome and hydrocephalus models.
How genetic information in the germinal zone determines neuronal cell types is unclear. Here the authors show that MEIS2 plays an important role in determining GABAergic neuron diversity during development.
Two fMRI studies (n = 358) show that cognitive regulation of negative emotion alters cortical activity but not amygdala or other subcortical areas. Regulation-related activity overlaps with emotion generation systems but also involves distinct areas.
Hematopoietic cell transplantation (HCT) may be a promising therapy for treatment-refractory multiple sclerosis (MS). Mader et al. Describe beneficial effects of autologous HCT in a mouse model of MS and identify a myeloid transcriptional signature associated with neuroprotection.
How do multiple synapses interact to modulate learning? Agnes and Vogels postulate models of ‘co-dependent’ synaptic plasticity that promote rapid, multi-synaptic attainment of stable receptive fields, dendritic patterns and plausible neural dynamics.
Riveland and Pouget model instructed action, showing that shared structure in task and semantic representations allows language to compose practiced skills in novel settings. Models make predictions for neural activity in human language areas.
Chen et al. show that transitions to innate behaviors, such as feeding and social interaction, rely on their encoding during beta oscillations by neuron populations in the lateral hypothalamus, coordinated with the medial prefrontal cortex and ventral tegmental area.
Cortical excitatory neurons are narrowly tuned to sensory inputs, but the tuning of interneurons is perceived as broad and irregular. Duszkiewicz et al. demonstrate that interneuron tuning is structured and reflects the sum of local excitatory inputs.
This paper identifies the evolutionarily conserved liprin-α protein family as key mediators of presynaptic assembly in human neurons. Their recruitment to sites formed by contacting neurons is the critical initial step that triggers presynaptic differentiation.
The identity of receptors sensing cold temperatures in peripheral somatosensory neurons remains obscure. Cai et al. report that GluK2, a kainate receptor mediating synaptic transmission in the brain, is co-opted as a cold sensor in the periphery.
This study investigates self-paced actions in freely foraging macaques. Findings highlight continuously evolving neural components that capture beliefs about latent reward dynamics, which are crucial for informed decision-making in a natural setting.
C9orf72 ALS/FTD polyGR and polyPR knock-in mice show cortical hyperexcitability and motor neuron loss accompanied by an increase in extracellular matrix proteins in the spinal cord that is conserved in patient iPS cell-derived neurons and is neuroprotective.
Sias et al. show that dopamine projections to the basolateral amygdala drive the reward learning that supports the predictions and inferences needed for adaptive decision-making.
Hollunder et al. identify networks where deep brain stimulation reduces symptoms for Parkinson’s disease, Tourette’s syndrome, dystonia and obsessive-compulsive disorder. This revealed a fronto-rostral topography that segregates the frontal cortex.
Long COVID is a major public health issue since 2020 and exhibits frequent neurological symptoms. Greene et al. propose that brain fog results from leaky brain blood vessels and a hyperactive immune system, shedding light on this phenomenon.
Astrocytes have important roles in disease. However, modulation of their reactive state is challenging. Here the authors present a phenotypic in vitro screening platform they can leverage to identify chemical compounds able to modulate astrocyte reactivity in vitro and in vivo.