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Hypoxia and epithelial-to-mesenchymal transition promotes cancer metastasis. Here the authors show that Daxx inhibits hypoxia-induced lung cancer metastasis by attenuating Slug-mediated transcriptional repression of epithelial-like markers that in turn cause cells to exhibit low invasiveness.
Several lncRNAs have been linked to cancer. Here, the authors identify SNHG5 as a long non-coding RNA promoting proliferation and survival of colorectal cancer cells by protecting specific mRNAs from STAU1-mediated degradation.
Despite the advantages of using heterogeneous catalysts, most successful rhodium hydrogenations are carried out with homogeneous catalysts. Here the authors report a supported single atom rhodium catalyst providing high activities and selectivities for propene hydroformylation.
Explaining species richness patterns is a key question in ecology. Peterset al. sample diverse plant and animal groups across elevation on Mt. Kilimanjaro to show that, while disparate factors drive distributions of individual taxa, diversity overall decreases with elevation, mostly driven by effects of temperature.
Medium-sized ring systems are common in natural products, however their synthesis is challenging, largely due to entropic factors. Here the authors report a radical-based method for the synthesis of medium to large functionalized, carbon or heterocyclic scaffolds.
Autophagy must be tightly controlled at each step of the process. Here the authors show that HS1BP3 binds phosphatidic acid (PA) at autophagosome precursors and negatively regulates autophagosome formation by modulating the activity and localization of the PA-producing enzyme phospholipase D1.
The peptide hormone hepcidin is released from hepatocytes and regulates iron homoeostasis. Here, the authors show that hepcidin also regulates the activation of hepatic stellate cells (HSCs) in mouse models of liver fibrosis by reducing ferroportin expression and inhibiting the HSC response to TGFβ.
The anterior olfactory nucleus pars medialis (mAON) provides cortical feedback to the olfactory bulb, but the behavioural relevance of these projections is unknown. Here, using opto- and chemogenetic approaches, the authors find the mAON bidirectionally modulates olfactory sensitivity and olfaction-dependent behaviours.
ATP-binding cassette (ABC) transporters hydrolyse ATP to transport molecules across the cell membrane. Here Vogelet al. show that the ABC exporter MsBA can couple ATP hydrolyse to an adenylate kinase activity that seems to be predominant at low ATP levels and a general feature of ABC exporters.
Ion migration has been related to hysteresis in perovskite solar cells, but not all perovskite cells exhibit a hysteresis. Here, Caladoet al. show that ion migration occurs regardless of hysteresis, but photogenerated carriers screen the effects of ionic charge for some solar cell architectures.
The activity enhancement of the glucose oxide and horseradish peroxidase enzymatic cascade on DNA scaffolds has been linked to proximity effects. Here, the authors challenge this view and suggest that the activity improvement is rather due to the pH near the DNA surface.
The tumour suppressor p120-catenin (p120) controls cadherin-based adhesion. Here, the authors demonstrate that p120 regulates cytokinesis through binding to the centralspindlin component MKLP1 and controls RhoA activity. Loss of p120 in cancer induces multinucleation and chromosomal instability, independent of cell-cell adhesion.
Molecules can self-assemble to form ordered phases with defined shape and periodicity, but there are a limited set of morphologies reported. Here, the authors have manipulated block copolymer thin films via an iterative assembly process to form a diverse library of morphologies.
The Aurora B abscission checkpoint is activated when DNA is retained in the cleavage furrow on completion of anaphase. Here the authors show that PKCɛ directly phosphorylates Aurora B triggering a switch in Aurora B substrate specificity to elicit Borealin phosphorylation and abscission checkpoint exit.
A delay in T cell responses is postulated as a possible explanation for the limited efficacy of vaccines against tuberculosis. Here the authors demonstrate this T-cell block and remove it by activating endogenous dendritic cells or delivering activated dendritic cells to the lungs, enhancing immunity of mice toMycobacterium tuberculosis.
Electron-electron interactions in many-body systems may manifest themselves through the fractional quantum Hall effect. Here, the authors perform transport measurements in bilayer graphene, and observe particle-hole symmetric fractional quantum Hall states in theN=2 Landau level.
The electrolyte is an important component of dye-sensitized solar cells. Here, Haoet al. use an electron donor additive in the cobalt-based electrolyte, which speeds up the dye regeneration and slows down recombinations. The resulting devices are stable and more efficient than those without additive.
The molecular mechanisms underlying retrograde transport in axons are only partially understood. Villarinet al. show that in cultured DRG neurons, extracellular trophic cues such as NGF dynamically regulate local protein synthesis of dynein cofactors, thus controlling retrograde trafficking in neurons.
Longevity of antibody responses has been attributed to persistence of plasma cells in mice. Here the authors provide human data in support of this model by immunoglobulin sequencing bone marrow sections from two human donors over 6.5 years to show temporal stability of plasma cell clonotypes, but not other B cells.
Graphene has so far demonstrated remarkable properties, making it increasingly interesting for ultrafast electronic applications. Here, the authors show that, when probed by a highly charged ion, freestanding graphene is able to provide dozens of electrons for ion neutralization within a few femtoseconds.