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Rapid and sensitive detection of cancer-derived small extracellular vesicles using Janus particles
Detecting small extracellular vesicles is critical for understanding disease biology and developing diagnostic tools, yet current methods require lengthy isolation steps and lack sensitivity owing to interference from abundant proteins. Here we report on an assay that uses Janus particles that enable rapid, isolation-free detection by exploiting Brownian rotation-induced blinking changes. When vesicles bind, their size significantly alters the blinking frequency, while smaller proteins produce...
Blood phosphorylated tau elevation as a biomarker in immunoglobulin light chain and transthyretin amyloidosis
Elevated blood levels of phosphorylated tau (p-tau) are diagnostic of Alzheimer disease and are associated with the deposition of amyloid-β in the cerebral neuropil. Elevated p-tau levels have also been associated with cerebral deposition of Danish amyloid and prion protein amyloid. Here we analyzed p-tau in serum from four different cohorts of people with the most common types of systemic amyloidosis, transthyretin (ATTR) amyloidosis and immunoglobulin light chain (AL) amyloidosis. We found...
Microglia protein profiles in CSF across Alzheimer's disease clinical stages
Microglia are implicated in the progression of Alzheimer's disease (AD) pathology from its earliest stages, suggesting that cerebrospinal fluid (CSF) microglia profiling across clinical AD stages can aid in treatment development and monitoring. We analyzed two CSF cohorts (n = 834) that span from unimpaired controls to preclinical and dementia AD stages, identifying 109 dysregulated microglia-related proteins. Enrichment analyses revealed innate immune processes and cellular recruitment in...
Stroke in persistent chronic kidney disease condition alters innate-immunity to escalate mitochondrial dysfunction and aging
Stroke is one of the leading causes of mortality and disability worldwide, with ischemic stroke accounting for over 87% of all stroke cases. Chronic kidney disease (CKD) is one of the major risk factors for stroke, as CKD patients have shown evidence of impaired cerebral autoregulation leading to exacerbated stroke pathology. The worsening of stroke outcomes in CKD patients is limitedly understood. Inflammation plays a pivotal role in driving the CKD-stroke pathology. The cGAS-STING (cyclic...
Intrinsic capacity and stroke risk in a multiple cohort study
Intrinsic capacity is a concept established by the World Health Organization (WHO). The concept aims to represent the total of a person's physical and mental abilities, measured across five domains: cognition, psychological, sensory, vitality, and locomotor that were identified as crucial for healthy aging. The aim being to shift focus from disease to function to predict health, disability, and frailty. In this large-scale cohort study, we aim to investigate the association between intrinsic...
Intestinal interoceptive dysfunction drives age-associated cognitive decline
Ageing is accompanied by declining memory function, with extremely heterogeneous manifestation in the human population¹. Brain-extrinsic factors influencing cognitive decline, such as gastrointestinal signals, have emerged as attractive targets for peripheral interventions^(2-6), but the underlying mechanisms remain largely unclear. Here, by charting a high-resolution map of microbiome ageing and its functional consequences throughout the lifespan of mice, we identify a mechanism by which...
Ageing promotes metastasis via activation of the integrated stress response
Lung cancer predominantly affects older individuals, yet how physiological ageing influences tumour evolution remains poorly understood¹. Here we show that ageing reprograms the evolutionary trajectory of KRAS-driven lung adenocarcinoma, limiting primary tumour growth while promoting metastatic dissemination through epigenetic activation of the integrated stress response (ISR). The ISR effector ATF4 drives epithelial and metabolic plasticity, conferring metastatic competence. Mechanistically,...
Gut microbes affect cognition during ageing
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Daily briefing: A daily multivitamin slows the signs of biological ageing
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Memory loss is fuelled by gut microbes in ageing mice
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Universe’s brightest stellar explosions may be powered by highly magnetic neutron stars
Peculiar bumps in light from supercharged supernovae point to a stellar remnant surrounded by a wobbling disk of matter
A genetic trick helps this all-female fish species escape evolutionary doom
The Amazon molly, which reproduces asexually, has survived—and thrived—at least 10 times longer than predicted by evolutionary theory
‘Tour de force’ mouse study shows a gut microbe can promote memory loss
Research suggests the microbiome may contribute to cognitive decline—but its relevance in humans is unclear
Why the Energy Department’s science labs will spearhead the federal push into AI
DOE’s national labs’ huge facilities, data flows, and computing resources are a natural fit for the Genesis Mission
Viagra compound may hold promise for treating fatal genetic disease
Animal studies and preliminary human data support the safety of sildenafil in Leigh syndrome, but the jury’s out on whether it’s effective
The emergence of neuropsychiatric symptoms in preclinical Alzheimer's disease: An emotion regulation perspective
Preclinical Alzheimer's disease (AD) is associated with distressing neuropsychiatric symptoms (NPSs) that may accelerate progression toward dementia. Existing approaches probe the symptom-level domain-general or domain-specific neural correlates of NPSs. However, the field lacks process-oriented models of symptom emergence for targeted treatment. We propose one pathway for symptom emergence involving the disruption of emotion regulation (ER) systems by early AD pathology. AD pathology in the...
Harmine and its derivatives: A promising multi-target therapeutic avenue for Alzheimer's disease
Alzheimer's disease (AD) is a complex neurodegenerative disorder characterized by β-amyloid (Aβ) deposition, tau hyperphosphorylation, neuroinflammation, and cholinergic dysfunction. Currently, no disease-modifying drugs are available, and existing symptomatic treatments offer limited efficacy while posing safety concerns, highlighting the urgent need for multi‑target therapeutic strategies. The natural β‑carboline alkaloid harmine has attracted considerable attention due to its favorable...
Personalized functional topography-based multisite brain age prediction modeling reveals divergent neurodevelopment in major depression
Major depressive disorder (MDD) is associated with widespread alterations in functional brain networks across the lifespan. However, heterogeneity in atypical brain development among patients with MDD remains largely uncharacterized. Using a multisite resting-state functional MRI dataset consisting of 1,105 MDD patients and 1,065 healthy controls, we constructed a harmonized multicenter brain age prediction model based on individualized functional topography and identified two patient subgroups...
Single-cell analyses identify independent aging processes that compete to determine cellular fate in budding yeast
Phenotypic heterogeneity is prevalent during aging, yet its underlying molecular drivers remain poorly understood. In budding yeast, two distinct aging trajectories, characterized by either ribosomal DNA (rDNA) instability or mitochondrial decline, have been proposed to be mutually exclusive. Here, we systematically dissect the heterogeneity among aging yeast cells by combining single-cell transcriptomics with longitudinal fluorescence microscopy. Our data reveal distinct transcriptional...
Associations of adherence to the EAT-Lancet and plant-based diets with mortality and life expectancy: two nationwide cohort studies
The EAT-Lancet diet (ELD) and plant-based diets (PBDs) are recommended for their potential health and environmental benefits, but comparative analyses of these dietary patterns in relation to mortality risk remain limited. This study aimed to evaluate the associations of ELD and PBDs with mortality and life expectancy in two nationwide cohorts. Participants from the UK Biobank and the US National Health and Nutrition Examination Survey (NHANES) (2003-2018) were included. Dietary intake was...