Aggregator
Photocatalytic oxygen-atom transmutation of oxetanes
Deaminative cross-coupling of amines by boryl radical β-scission
How journals can break down barriers for Latin American scientists
UNESCO stands at a crossroads — researchers must back its new leader
The quest to make babies with lab-grown eggs and sperm
Scientists lose jobs and grants as US government shutdown takes a toll
Polluted weapons factory begins locking up nuclear waste in glass
After years of delay and political wrangling, DOE’s Hanford site opens vitrification plant
Poisonous sacs helped toads conquer the world
Iconic amphibians took an unexpected path across the globe, study finds—with toxins as a “game changer”
Scientific distinctions between coca and cocaine support policy reform
Science, Volume 390, Issue 6775, Page 782-785, November 2025.
Did lead poisoning doom Neanderthals?
Modern humans’ tolerance for the toxic metal may have helped them outcompete our closest evolutionary cousins
Phase 1/2a clinical trial of hESC-derived dopamine progenitors in Parkinson's disease
Parkinson's disease (PD) has long been considered an appropriate candidate for cell replacement therapy. We generated high-purity dopaminergic progenitors (A9-DPCs) from human embryonic stem cells and evaluated their safety and exploratory efficacy in a single-center, open-label, dose-escalation phase 1/2a trial (NCT05887466) for PD patients. Twelve patients with moderate-to-severe PD received bilateral putamen transplantation of low-dose (3.15 million cells; n = 6) or high-dose (6.30 million...
Beyond Krabbe disease, the intriguing connection of galactocerebrosidase (GALC) with nervous system illness: A novel risk factor?
Galactocerebrosidase (GALC) is a lysosomal enzyme crucially involved in the catabolism of galactosphingolipids. Among galactosphingolipids, galactosylceramide and sulfatide are crucial determinants for oligodendrocyte differentiation, as well as myelin stability and structure. Homozygous or compound heterozygous inherited mutations leading to a severe decrease in GALC enzymatic activity have been associated with the onset of Krabbe disease, also known as "globoid cell leukodystrophy". Extensive...
Neurobiochemical alterations in patients with idiopathic Parkinson's disease in sensorimotor cortex using (1)H-MRS
The sensory motor cortex (SMC) plays a crucial role in motor function and is implicated in the pathophysiology of idiopathic Parkinson's disease (iPD). Asymmetric motor symptomatology in iPD suggests lateralized neurochemical alterations that may underlie disease progression and severity. Single-voxel in vivo proton magnetic resonance spectroscopy using PRESS (20 × 20 × 20 mm³) and MEGA-PRESS (30 × 30 × 30 mm3) sequences were performed on bilateral SMC in 25 iPD patients and 23 healthy controls...
Multi-omic network inference from time-series data
Biological phenotypes emerge from complex interactions across molecular layers. Yet, data-driven approaches to infer these regulatory networks have primarily focused on single-omic studies, overlooking inter-layer regulatory relationships. To address these limitations, we developed MINIE, a computational method that integrates multi-omic data from bulk metabolomics and single-cell transcriptomics through a Bayesian regression approach that explicitly models the timescale separation between...
Chaperone-mediated autophagy regulates neuronal activity by sex-specific remodelling of the synaptic proteome
Chaperone-mediated autophagy (CMA) declines in ageing and neurodegenerative diseases. Loss of CMA in neurons leads to neurodegeneration and behavioural changes in mice but the role of CMA in neuronal physiology is largely unknown. Here we show that CMA deficiency causes neuronal hyperactivity, increased seizure susceptibility and disrupted calcium homeostasis. Pre-synaptic neurotransmitter release and NMDA receptor-mediated transmission were enhanced in CMA-deficient females, whereas males...
Ubiquilin-2 liquid droplets catalyze α-synuclein fibril formation
Liquid-liquid phase separation (LLPS) and subsequent liquid-gel/solid transition are considered common aggregation mechanisms of proteins linked to neurodegenerative diseases. α-synuclein (α-syn), the main factor in Parkinson's disease pathology, has been reported to undergo LLPS, thereby accelerating aggregate formation. However, the precise molecular events involved in the early stages of α-syn aggregation remain controversial. In this study, we show that α-syn aggregation is promoted by...
Cerebrospinal fluid proteomic signatures in cognitively normal individuals identify distinct clusters linked to neurodegeneration
Age and APOE ε4 are major risk factors for Alzheimer's disease (AD), while sex differences exist in disease prevalence and progression. Cerebrospinal fluid (CSF) proteomics can provide additional insights into brain aging and AD. To examine proteomic changes due to age, sex and apolipoprotein E (APOE) ε4 along with amyloid status before clinical AD occurs, we profiled 6,175 proteins in the CSF from 994 cognitively normal individuals aged 43-91 years. We identified and replicated 2,172...
Glycation-lowering compounds inhibit ghrelin signaling to reduce food intake, lower insulin resistance, and extend lifespan
Non-enzymatic reactions in glycolysis produce methylglyoxal (MGO), a reactive precursor to advanced glycation end-products (AGEs), which has been hypothesized to drive obesity, diabetes, and aging-associated pathologies. A combination of nicotinamide, α-lipoic acid, thiamine, pyridoxamine, and piperine (Gly-Low) lowers the deleterious effects of glycation by reducing MGO and the MGO-derived AGE, MG-H1, in mice. Gly-Low supplementation in the diet reduces food consumption, decreases body weight...
Intrinsic Capacity Predictors of Dementia and Mortality in the Sydney Memory and Ageing Study
CONCLUSION: Evaluation of a person's IC at baseline explains additional variance compared to traditional frailty measures when predicting the risk of future negative health outcomes such as dementia incidence and mortality.
Chaperone-mediated autophagy regulates neuronal activity by sex-specific remodelling of the synaptic proteome
Chaperone-mediated autophagy (CMA) declines in ageing and neurodegenerative diseases. Loss of CMA in neurons leads to neurodegeneration and behavioural changes in mice but the role of CMA in neuronal physiology is largely unknown. Here we show that CMA deficiency causes neuronal hyperactivity, increased seizure susceptibility and disrupted calcium homeostasis. Pre-synaptic neurotransmitter release and NMDA receptor-mediated transmission were enhanced in CMA-deficient females, whereas males...