Aggregator
Rapid model-guided design of organ-scale synthetic vasculature for biomanufacturing
Science, Volume 388, Issue 6752, Page 1198-1204, June 2025.
Dark matters
Science, Volume 388, Issue 6752, Page 1141-1141, June 2025.
North America’s last prairies
Science, Volume 388, Issue 6752, Page 1142-1142, June 2025.
Physicists’ hopes for an exotic muon collider get a boost
U.S. should plan to build machine to hunt for new subatomic particles, National Academies report says
Trump’s cuts to more than 1700 NIH grants get court hearing
District judge could declare terminations unlawful—or toss suit based on technicalities
Tropical forests are heating up. Can they cope?
Scientists are pushing plants beyond their comfort zone to test their resilience to warming
Climate change threatens India-Pakistan pact over major river system
Warming world could further heighten tensions over access to Indus River waters
Historical records expose role of Black inmates in unethical malaria studies decades ago
Science chats with James Tabery about the overlooked role of Black prisoners in understanding the genetics of drug reactions
Newly discovered plant genes could slash cost of making key cancer drug
Shifting production from yew trees to yeast could lead to cheaper synthesis of Taxol precursor
This brain implant lets a man who lost his speech to ALS produce natural-sounding sentences instantaneously
New brain-computer interface allows control of intonation, and generates a person’s voice at the speed of typical speech
‘Dragon prince’ dinosaur may be missing link in <em>T. rex</em> evolution
Newly described fossils point to ancient movement between Asia and North America
Massively parallel genetic perturbation suggests the energetic structure of an amyloid-β transition state
Amyloid aggregates are pathological hallmarks of many human diseases, but how soluble proteins nucleate to form amyloids is poorly understood. Here, we use combinatorial mutagenesis, a kinetic selection assay, and machine learning to massively perturb the energetics of the nucleation reaction of amyloid-β (Aβ42), the protein that aggregates in Alzheimer's disease. In total, we measure the nucleation rates of >140,000 variants of Aβ42 to accurately quantify the changes in free energy of...
Trends and mechanisms of Alzheimer's disease and hearing impairment: A 20-year perspective
Alzheimer's disease (AD) and hearing loss (HL) are major age-related public health challenges with emerging evidence suggesting their interconnection. This study aimed to investigate global research trends, shared molecular mechanisms, and clinical implications of AD and HL. A total of 349 articles published between 2004 and 2024 were retrieved from the Web of Science Core Collection and analyzed using VOSviewer and CiteSpace. GeneCards and STRING databases were used to explore molecular targets...
Sequential transcriptional programs underpin activation of hippocampal stem cells
Adult neural stem cells exist on a continuum from deep to shallow quiescence that changes in response to injury or aging; however, the transcription factors controlling these stepwise transitions have not been identified. Single-cell transcriptomic analyses of mice with loss of function or increased levels of the essential activation factor Ascl1 reveal that Ascl1 promotes the activation of hippocampal neural stem cells by driving these cells out of deep quiescence, despite its low protein...
Biological age acceleration in Alzheimer's disease modulates relative cortical to medial temporal lobe neurodegeneration
Alzheimer's disease (AD) is highly associated with aging, typically presenting with amnestic, multi-domain cognitive impairment and greater medial temporal lobe (MTL) atrophy relative to cortex. However, approximately 15 % of AD cases present atypically, often at younger ages and with greater cortical involvement relative to MTL. This association between age and AD presentation is imperfect: some younger-onset cases are typical, amnestic presentations while some older-onset cases present less...
Trends and mechanisms of Alzheimer's disease and hearing impairment: A 20-year perspective
Alzheimer's disease (AD) and hearing loss (HL) are major age-related public health challenges with emerging evidence suggesting their interconnection. This study aimed to investigate global research trends, shared molecular mechanisms, and clinical implications of AD and HL. A total of 349 articles published between 2004 and 2024 were retrieved from the Web of Science Core Collection and analyzed using VOSviewer and CiteSpace. GeneCards and STRING databases were used to explore molecular targets...
Using RNA therapeutics to promote healthy aging
Aging is characterized by a gradual decline of cellular and physiological functions over time and an increased risk of different diseases. RNA therapeutics constitute an emerging approach to target the molecular mechanisms of aging and age-related diseases via rational design and have several advantages over traditional drug therapies, including high specificity, low toxicity and the potential for rapid development and production. Here, we discuss the latest developments in RNA therapeutics...
Epigenetic aging mediates the association between life course socioeconomic status and decrements in kidney function across a decade
Epigenetic aging measures are novel molecular indicators of biological aging that predict age-related chronic disease. We examined whether several established indices of epigenetic aging mediated the association between life course socioeconomic status (SES) and decrements in kidney function across a decade. Biomarker data were from 252 non-Hispanic (NH) Black and white participants who had consented to genetic analyses in Wave 2 (2004-2009) and 3 (2014-2021) of the Midlife in the United States...
A mathematical model that predicts human biological age from physiological traits identifies environmental and genetic factors that influence aging
Why people age at different rates is a fundamental, unsolved problem in biology. We created a model that predicts an individual's age from physiological traits that change with age in the large UK Biobank dataset, such as blood pressure, lung function, strength, and stimulus-reaction time. The model predicted a person's age with best accuracy when it heavily weighted traits that together query multiple organ systems, arguing that most or all physiological systems (lung, heart, brain, etc.)...
R-2-hydroxyglutarate-mediated inhibition of KDM4A compromises telomere integrity
Mutation, deletion, or silencing of genes encoding cellular metabolism factors occurs frequently in human malignancies. Neomorphic mutations in isocitrate dehydrogenases 1 and 2 (IDH1/2) promoting the production of R-2-hydroxyglutarate (R-2HG) instead of α-ketoglutarate (αKG) are recurrent in human brain cancers and constitute an early event in low-grade gliomagenesis. Due to its structural similarity with αKG, R-2HG acts as an inhibitor of αKG-dependent enzymes. These include the JUMONJI family...