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Phenols and anilines are of extreme importance for medicinal chemistry and material science but the selective preparation of meta-substituted phenols and anilines remains challenging. Here the authors report an efficient copper-catalyzed dehydrogenation strategy to exclusively synthesize meta-carbonyl phenols and anilines from carbonyl substituted cyclohexanes.
Secondary resistance to venetoclax in patients with myelodysplastic syndromes (MDS) is not completely elucidated. Here, the authors show that haematopoietic stem cells with a granulo-monocytic differentiation transcriptional state drive secondary resistance to venetoclax in MDS patients who previously failed hypomethylating agent therapy.
Fermi arcs show unpredictable diffraction features resulting from their long-range scattering order in aperiodic systems. Here, authors continuously twist a bi-block Weyl meta-crystal and experimentally observe the twisted Fermi arc reconstruction.
Mitigating the deactivation of noble metal-based catalysts caused by self-oxidation and toxic adsorption poses a considerable challenge in organic electro-oxidation. This study addresses the issue by employing a pulsed potential electrolysis approach to selectively electrocatalyze the oxidation of glycerol to glyceric acid using a Pt-based catalyst.
Comparing to other biological systems, our understanding of plant extrachromosomal circular DNA (eccDNA) is limited. Here, the authors profile eccDNA from six rice tissues and investigate eccDNA characteristics, formation mechanisms, distribution, and functional implications.
Earth system modeling is used to project future changes in North American wetlands. Climate change will reduce inland wetland areas and disrupt their seasonal regimes, with substantial summer drying and shrinkage in cold regions.
Bacterial type IV pili are filamentous cell surface structures and candidate targets for vaccine development. Here, authors determine how antibodies interact with pili at the structural level providing insight into immune escape mechanisms and potential countermeasures.
Magnetic type-II Weyl semimetals host a variety of intriguing physical phenomena due to the combination of magnetic ordering and the electronic properties of the Weyl nodes. Herein, the authors explore the ultrafast spin dynamics of the magnetic Weyl semimetal, Co3Sn2S2, observing a transient enhanced magnetization as a result of laser excitation.
The PDZ serine protease HTRA1 degrades fibrillar tau, which is associated with Alzheimer’s disease. Here the authors report that HTRA1 inhibits aggregation of α-syn as well as FUS and TDP-43, which are implicated in amyotrophic lateral sclerosis (ALS) and frontotemporal dementia.
The unification of decision-making, communication, and memory would enable the programming of intelligent biotic systems. Here, the authors achieve this goal by engineering E. coli chassis cells with an array of inducible recombinases that mediate diverse genetic programs.
Recent evidence suggests that senescence can negatively affect immune cell function. Here the authors show that accumulation of senescent cells in tumor-bearing mice previously exposed to irradiation or chemotherapy is associated with resistance to immune checkpoint inhibitors, associated with an exacerbated immunosuppressive profile of tumor-infiltrating myeloid cells.
Hair is the main skin appendage of mammals. Here, the authors show that claws of clawed frogs and hair contain homologous keratins and depend on the same transcription factor, Hoxc13, suggesting a common evolutionary origin of these skin appendages.
Lipid synthesis increases during the cell cycle to ensure sufficient membrane mass. Here, authors identify a lipid checkpoint in G1 phase that prevents cells from starting the cell cycle if lipid synthesis is low, thereby preventing mitotic defects.
Here the authors propose a mechanism for direct space-time manipulation of ultrafast light field and experimentally demonstrate the generation of a spatiotemporally coupling light spring with a broad topological charge bandwidth.
Ensuring high-fidelity quantum gates while increasing the number of qubits poses a great challenge. Here the authors present a scalable strategy for optimizing frequency trajectories as a form of error mitigation on a 68-qubit superconducting quantum processor, demonstrating high single- and two-qubit gate fidelities.
Sturm et. al developed a 2 to 4 h antibiotic susceptibility test based on bacterial vibrations. This diagnostic test applies to the most frequently found gram-negative bacteria in bloodstream infections and demonstrates its potential in contributing to faster treatment decisions.
This study shows that urban irrigation is capable of achieving the environmental co-benefit of heat mitigation and carbon neutrality and has the potential to counteract the climate–carbon feedback loop in the U.S. urban environment.
Antiviral DNA cytosine deaminases APOBEC3A and APOBEC3B are major sources of mutations in cancer. This study provides evidence that APOBEC3A and APOBEC3B can generate distinct mutation landscapes in cancer genomes, driven by their substrate selectivity.
The interplay between electron-phonon and spin-orbit interactions has led to the concept of a spin-orbit polaron. Here the authors show that such a regime is realized in a spin-orbit-coupled Mott insulator, leading to a new polaron quasiparticle, and study its effect on the Mott metal-insulator transition.
The liver is segregated into spatially organized areas that serve distinct functions, though how these zones are patterned remains unclear. Here they show that mTORC1 controls spatial segregation of liver metabolic functions via modulation of Wnt signaling, and find that impaired zonation is also observed in pigs given total parenteral nutrition.