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Laser phase plate improves structure determination of small proteins by cryo-EM
Science, Ahead of Print.
Chemically induced skin tumors arise from long-lived stem cells of the upper hair follicle
Science, Ahead of Print.
After years of opposition, Mexico’s president is reconsidering fracking
The government has tasked a group of scientists with assessing new technologies for “sustainable” oil and gas drilling—but many experts say it’s a fantasy
How did the cruise ship hantavirus outbreak start? Scientists are investigating new scenarios
Understanding how the first patient became infected may shed new light on Andes virus’ transmission patterns and incubation period
Deep-sea vehicles spot ‘alien’ sharks deep beneath the waves in the Pacific
Goblin sharks have never before been filmed in their natural habitat
Laser-boosted microscopes could reveal new drug targets, sharpen views inside cells
Enhanced cryo–electron microscopy promises to bring previously elusive proteins into view
The ocean current that warms Europe may be more resilient than feared
Studies of the Atlantic's circulation find signs of both weakening and unexpected stability in the face of global warming
Scientists shut down cancer DNA repair to overcome drug resistance
Cancer cells often survive treatment by fixing the DNA damage that therapy is meant to cause. Researchers found that UNI418 can disrupt this repair ability, leaving cancer cells more exposed. When combined with a PARP inhibitor, it helped resistant cancer cells respond to treatment again. The findings point to a new strategy for overcoming cancer drug resistance.
‘Weird and capricious’: Experts struggle to understand new list of political jobs at science agencies
NIH programs and leadership are hit especially hard, while other science agencies are barely mentioned
Immense whale ‘graveyard’ discovered in the deep sea
Stretching 1200 kilometers, the unusual collection of carcasses includes fossils older than 5 million years
A classic brain test exposed AI's biggest weakness
Researchers gave top AI models a classic attention test used in psychology and found a major flaw. While the models could correctly name colors in short lists, their performance deteriorated sharply as the task became longer and more complex. Some leading systems fell from over 90% accuracy to nearly complete failure.
Scientists mapped every neural connection in a fruit fly and found a surprise
A groundbreaking new connectome maps every neural connection in an adult fruit fly’s central nervous system, creating an unprecedented view of how the brain and body work together. The findings suggest that complex behaviors emerge from distributed local circuits rather than a single central controller, offering new clues about intelligence, movement, and brain function.
Cerebral hypoperfusion and the vascular-metabolic-immune-glymphatic network in Alzheimer's disease: mechanisms, diagnosis, and therapy
Alzheimer's disease (AD), characterized by progressive cognitive decline, represents a major public health challenge in aging societies. Since the proposal of the amyloid cascade hypothesis, Aβ-targeted therapeutic strategies have dominated this field for over three decades. Although recent anti-Aβ antibodies have shown modest promise, their limited clinical benefits coupled with safety concerns underscore the necessity of re-evaluating the pathological mechanisms underlying AD. Cerebral...
Cerebellar aging is spatially heterogeneous and supports cognitive resilience in later life
The cerebellum contains most of the brain's neurons and supports many functions, yet how it changes with age remains unclear. Here we used three brain imaging studies spanning 47,000 adults and examined how different parts of the cerebellum age and their relation to cognition. We characterized cerebellar aging using volumetry and the T1-weighted/T2-weighted ratio, and corroborated these findings with quantitative magnetic resonance imaging in an independent sample. We show a spatially...
Dual-target gene therapy in Parkinson's disease: a multicenter phase 1 trial
Restoring striatal dopamine synthesis is a promising gene therapy strategy for Parkinson's disease. Previous adeno-associated virus-mediated aromatic L-amino acid decarboxylase (AADC) monotherapies remain dependent on exogenous levodopa, whereas multigene delivery is constrained by strict adeno-associated virus packaging limits. A 'dual approach' targeting the two rate-limiting enzymes, tyrosine hydroxylase (TH) and AADC, offers the potential for autonomous dopamine synthesis. We report the...
A decline in skeletal muscle NOX4 abrogates exercise-induced adaptive homeostasis and exacerbates biological aging
A decline in nuclear factor erythroid 2-related factor 2 (NFE2L2)-orchestrated adaptive homeostasis and oxidative distress are thought to be key features of aging. In contracting skeletal muscle, the reactive oxygen species-producing enzyme NADPH oxidase 4 (NOX4) is a potent inducer of NFE2L2 adaptive homeostasis. Here, we report that skeletal muscle NOX4 levels decline in aged mice and humans, resulting in abrogated NFE2L2 adaptive homeostasis, increased protein oxidative damage, and decreased...
Oil-impregnated densified wood veneer with high electrical insulation enabled by nanosized oil channels
Growing energy demands and renewable integration are stressing the aging power grid infrastructure. Lignocellulosic oil-impregnated paper is widely used in power transformers but suffers from critical limitations, such as low dielectric strength, mechanical strength, and thermal conductivity, causing premature transformer failures. Here, we demonstrate a superior electrically insulating oil-impregnated paper design using the naturally anisotropic structure of densified wood veneer to achieve...
Rural-Urban Variability in Home and Community-Based Service Use Among Veterans
CONCLUSION: While rural Veterans were less likely to use HCBS overall, there was substantial variability across facilities. These findings demonstrate that some VAMCs counteract the overall trend by ensuring rural Veterans receive HCBS at rates comparable to urban Veterans.
Persistent and transient senescent cells contribute to brain-barrier development
Establishment of the blood-brain barrier (BBB) and blood-cerebrospinal fluid (CSF) barrier requires precise coordination between diverse cell types to protect and nourish the brain. Here, we identify developmentally programmed p21^(+) senescent cells that exhibit divergent senescence-associated features across these two brain interfaces in mice. In the choroid plexus (ChP), epithelial cells adopt a lifelong, non-inflammatory senescent state associated with CSF production and blood-CSF barrier...
Artificial intelligence across the aging continuum: Mechanistic geroscience, therapeutic innovation, and clinical impact
Aging emerges from nonlinear interactions among primary, antagonistic, and integrative hallmarks that progressively erode tissue resilience. As global demographics shift and chronic disease burden intensifies, extending healthspan with mechanistic precision has become imperative, accelerating the incorporation of artificial intelligence into geroscience. AI leverages multi-omics, spatial biology, imaging, and clinical data to reveal nonlinear structures linking hallmark interactions to tissue...