Catálogo de publicaciones - revistas

<jats:title>To have to hold</jats:title> <jats:p> The ability to control and cool the motion of levitated systems—in some cases down to their motional ground state—and to couple these systems to external forces provides opportunities for fundamental science and technology. Gonzalez-Ballestero <jats:italic>et al</jats:italic> . provide an overview of the status, challenges, and prospects of levitodynamics, the multidisciplinary research area that focuses on the understanding and control of optical trapping of microparticles and nanoparticles in vacuum, with the goal of eventually using such levitated particles as ultrasensitive probes for sensing applications. —ISO </jats:p>

<jats:title>Cross-reactive T cells aid in the fight</jats:title> <jats:p> There is mounting evidence that immunological memory after infection with seasonal human coronaviruses (hCoVs) contributes to cross-protection against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Loyal <jats:italic>et al</jats:italic> . identified a universal immunodominant coronavirus peptide found within the fusion peptide domain of coronavirus spike protein. This peptide is recognized by CD4 <jats:sup>+</jats:sup> T cells in 20% of unexposed individuals, more than 50% of SARS-CoV-2 convalescents, and 97% of subjects treated with the Pfizer–BioNTech COVID-19 vaccine. Although ubiquitous, these coronavirus-reactive T cells decreased with age, which may explain in part the increased susceptibility of elderly people to COVID-19. —STS </jats:p>

<jats:title>A biological clock in a test tube</jats:title> <jats:p> The biological clock of cyanobacteria, which remarkably requires just three proteins, has been reconstituted in vitro in a system that allows detailed study of its inputs and outputs, bringing new understanding of how environmental signals can influence a biological oscillator and how the clock controls cellular events such as gene transcription. Chavan <jats:italic>et al</jats:italic> . extended the known in vitro function of the core clock components to include output signals to transcriptional regulation and allow monitoring through fluorescence measurements in real time. The authors combined crystallography, mutagenesis, and quantitative modeling to further explore the clock mechanism, which may enable future synthetic biology applications. —LBR </jats:p>

<jats:p>Next week, the United Nations Biodiversity Conference (COP 15) convenes in Kunming, China, to discuss a new global plan to conserve nature and improve the sharing of its benefits across humankind. If such a plan is successfully implemented, it will mark a turning point in the millennia-long decline of the natural world due to human activity. This prospect has been boosted by the United Nations General Assembly decision to declare 2021–2030 as the Decade of Ecosystem Restoration (the “Decade”), which aims to prevent, halt, and reverse the degradation of ecosystems across the planet.</jats:p>

<jats:p>High vaccination rates in some countries may soon make COVID-19 an “endemic” disease</jats:p>

<jats:p>NASA’s Lucy mission will survey Jupiter’s Trojans, thought to have been swept up by migrating gas giants</jats:p>

<jats:p>Navigating rough political waters and a pandemic, Francis Collins greatly expanded biomedical research agency</jats:p>

<jats:p>Census of motor cortex aims to standardize definitions of cell types</jats:p>

<jats:p>New five-in-one vaccine could help end epidemics in Africa and cut deaths worldwide by 70%, WHO says</jats:p>