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When a suspension of particles passes through a constriction the particle volume fraction either decreases or remains the same. Pan et al. report that an entangled fiber suspension increases its volume fraction greater than a factor of 10 after passing through a constriction.
Cyanobacteria mutants with improved tolerance to combined high light and high temperature (HLHT) are rarely reported. Here, the authors use a hypermutation system for adaptive laboratory evolution and identify a mutant with improved HLHT tolerance by enhancing expression of shikimate kinase.
Reducing energy loss of sub-cells is critical for high performance tandem organic solar cells. Here, the authors design and synthesize an ultra-narrow bandgap acceptor through replacement of terminal thiophene by selenophene in the central fused ring, achieving efficiency of 19% for tandem cells.
The trifluoromethyl anion rapidly decomposes into difluorocarbene (:CF2) and fluorine ion, limiting its applicability in synthesis. Here, the authors report a strategy to generate and use the short-lived CF3- intermediate from stable CF3H gas via fast biphasic mixing in precisely customized flow dissolvers.
X-ray diffraction images contain a signal that is an untapped source of information on protein dynamics. Here, the authors lay out a general workflow for interpreting this diffuse scattering signal and expanding the capabilities of protein crystallography.
Pannexin 2 plays critical roles in many physiological processes but its mechanism remain unclear. Here, authors report the cryo-EM structure of human Panx2 in the open state and identify critical residues for its gating.
CDKN2A loss and p53 mutations are rare in MYC-driven Group 3 medulloblastomas (MBs). Here the authors generated a transgenic mouse model of Group 3 MB by MYC overexpression and show that MYC suppresses ARF to drive tumorigenesis.
RNase H2 removes mutagenic rNMPs from genomic DNA. The authors demonstrate how nicked rNMPs are repaired when they are encountered in S phase. This study unveils genetic interactions that could potentially be exploited in RNase H2-deficient pathologies.
Tissue morphogenesis is a complex process that involves tissue growth, mechanics, and shape changes. This work demonstrates that differences in growth rate and direction between a tissue layer and its associated extracellular matrix drive 3D shape changes during organ growth.
Beiging and thermogenesis in white adipose tissue (WAT) is an important adaptive response to cold exposure, but how the brain senses cold and subsequently induces beiging remains unclear. Here, the authors show that sympathetic nerves stimulate lymph nodes to release IL-33, thereby mediating cold-induced beiging of WAT.
Here the authors used an evidence-based strategy to prioritize causal pleiotropic variants of autoimmune diseases, and revealed that rs4728142 modulates aberrant IRF5 alternative promoter usage by ZBTB3-mediated chromatin looping.
Here the authors show enhancers in the Igh locus play a major role in configuring locus architecture and in V(D)J recombination, and identify a link between enhancer hub formation, locus contraction and cohesin-mediated loop extrusion.
Renal tubular atrophy is a hallmark of chronic kidney disease. The study by Zhu et al. reveals the protective role of tubular polynucleotide phosphorylase (PNPT1) against renal atrophy by blocking the leakage of mitochondrial dsRNAs into cytoplasm where they activate the PKReIF2α axis and terminate translation.
In this work, the authors report that heparin oligosaccharides have a significant impact on the highly dynamic behaviour of netrin-1 by inducing hierarchical and distinct super assemblies leading to unique, yet unknown netrin-1 filament formation.
Signal transduction and gene expression regulation via downstream transcription factors shape the early mammalian embryo. Here the authors show that Wnt/TCF7L1 transcriptional repressive activity is required for primitive endoderm lineage formation.
It remains unclear how cells respond to complex extracellular geometries at the mesoscale. Here, the authors study the organization of bone cells in landscapes with varying curvatures, observing a preference for local concavities, multicellular bridging, and collective stress fiber orientation.
B7-H3 is expressed at high levels in several cancer types and can suppress antitumor immune responses. Here the authors show that B7-H3 expression is dependent on mTORC1 activity and that inhibition of B7-H3 promotes antitumor immunity mediated by cytolytic CD4 + T cells in tumor models with mTORC1 hyperactivity.
Microtubules are a ubiquitous eukaryotic cytoskeletal element typically consisting of 13 protofilaments arranged in a hollow cylinder. Using CryoEM and subvolume averaging, Ferreira and Pražák et al. show that Plasmodium does not adhere to a single microtubule structure. Instead, the cytoskeleton changes substantially to produce a unique, fit for purpose structure and organisation at each stage of its life cycle.
Diagnosis of rare, unpredictable, drug-induced liver injury (DILI) is a significant challenge for patients, clinicians, and drug development. Here, the authors discover, evaluate, and validate potential blood biomarkers to diagnose DILI and distinguish it from alternative causes of liver injury.