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Molecular evolution of sour tolerance in birds

1 month 3 weeks ago
Science, Volume 388, Issue 6753, Page 1330-1336, June 2025.
Hao Zhang, Lei Luo, Qiaoyi Liang, Lifeng Tian, Yong Shao, Xiuping Zhang, Kaixun Cao, Anna Luo, Chengsan Wang, Peter Muiruri Kamau, Dong-Dong Wu, Maude W. Baldwin, Ren Lai

Excision of organic macrocycles from covalent organic frameworks

1 month 3 weeks ago
Science, Volume 388, Issue 6753, Page 1318-1323, June 2025.
Roberto Sánchez-Naya, Juan Pablo Cavalieri, Jorge Albalad, Alba Cortés-Martínez, Kaiyu Wang, Carles Fuertes-Espinosa, Teodor Parella, Sara Fiori, Esteve Ribas, Aitor Mugarza, Xavi Ribas, Jordi Faraudo, Omar M. Yaghi, Inhar Imaz, Daniel Maspoch

In vivo CAR T cell generation to treat cancer and autoimmune disease

1 month 3 weeks ago
Science, Volume 388, Issue 6753, Page 1311-1317, June 2025.
Theresa L. Hunter, Yanjie Bao, Yan Zhang, Daiki Matsuda, Romina Riener, Annabel Wang, John J. Li, Ferran Soldevila, David S. H. Chu, Duy P. Nguyen, Qian-Chen Yong, Brittany Ross, Michelle Nguyen, James Vestal, Scott Roberts, Diana Galvan, Jerel Boyd Vega…

Transferability of European-derived Alzheimer's disease polygenic risk scores across multiancestry populations

1 month 4 weeks ago
A polygenic score (PGS) for Alzheimer's disease (AD) was derived recently from data on genome-wide significant loci in European ancestry populations. We applied this PGS to populations in 17 European countries and observed a consistent association with the AD risk, age at onset and cerebrospinal fluid levels of AD biomarkers, independently of apolipoprotein E locus (APOE). This PGS was also associated with the AD risk in many other populations of diverse ancestries. A cross-ancestry polygenic...
Aude Nicolas

Rapamycin, Not Metformin, Mirrors Dietary Restriction-Driven Lifespan Extension in Vertebrates: A Meta-Analysis

1 month 4 weeks ago
Dietary restriction (DR) robustly increases lifespan across taxa. However, in humans, long-term DR is difficult to maintain, leading to the search for compounds that regulate metabolism and increase lifespan without reducing caloric intake. The magnitude of lifespan extension from two such compounds, rapamycin and metformin, remains inconclusive, particularly in vertebrates. Here, we conducted a meta-analysis comparing lifespan extension conferred by rapamycin and metformin to DR-mediated...
Edward R Ivimey-Cook

Reversible proliferative arrest induced by rapid depletion of RNase MRP

1 month 4 weeks ago
Cellular quiescence is a state of reversible proliferative arrest that plays essential roles in development, resistance to stress, aging, and longevity of organisms. Here we report that rapid depletion of RNase MRP, a deeply conserved RNA-based enzyme required for rRNA biosynthesis, induces a long-term yet reversible proliferative arrest in human cells. Severely compromised biogenesis of rRNAs along with acute transcriptional reprogramming precede a gradual decline of the critical cellular...
Yuan Liu

Epigenetic clocks and DNA methylation biomarkers of brain health and disease

1 month 4 weeks ago
Ageing has profound effects on the human brain across the lifespan. Cognitive testing and brain imaging are currently used to monitor healthy and pathological brain ageing. However, peripheral markers of cognitive function, cognitive ageing and neurological disease could provide a valuable, minimally invasive approach to tracking these processes longitudinally. In this Review, we introduce the concept of DNA methylation-based biomarkers and present current evidence of their potential to address...
Eleanor L S Conole

Heat shock proteins function as signaling molecules to mediate neuron-glia communication in C. elegans during aging

1 month 4 weeks ago
The nervous system is primarily composed of neurons and glia, and the communication between them has profound roles in regulating the development and function of the brain. Neuron-glia signal transduction is known to be mediated by secreted signals through ligand-receptor interactions on the cell membrane. Here we show a new mechanism for neuron-glia signal transduction, wherein neurons transmit proteins to glia through extracellular vesicles, activating glial signaling pathways. We find that in...
Jieyu Wu

First-generation versus next-generation epigenetic aging clocks: Differences in performance and utility

1 month 4 weeks ago
Aging biomarkers that predict age given methylomic data are referred to as epigenetic aging clocks. While the earliest, first-generation clocks were exclusively trained to predict chronological age, more recent next-generation models have been explicitly trained to associate with health, lifestyle, and/or age-related outcomes. Although these next-generation models have been trained using distinct approaches and techniques, existing evidence indicates that they associate with a greater number of...
Adiv A Johnson