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The upstream pathways regulating leukemic transcriptional plasticity for differentiation arrest and resistance to therapy are unclear. Here the authors show that aPKC λ/ι-controls leukemic B-cell precursor differentiation arrest trough RAC/MEK/ERK/SATB2 epigenetic repression
Halogen bonding can be exploited for the design of functional supramolecular materials, but heavier elements that are known to accept a halogen bond remain limited. Here, the authors demonstrate the formation of two-component cocrystals based on halogen bonds with phosphorus, arsenic and antimony.
In Ciona, cardiopharyngeal progenitors migrate as polarized pairs of cells between the epidermis and the endoderm. Here the authors show that the endoderm secretes a particular collagen, which promotes Discoidin domain receptor activity to control cell-matrix adhesion and collective polarity.
Copper-catalyzed allylic desymmetrizations are, so far, limited to carbocyclic products with two tertiary stereocenters. Here, the authors report a highly enantioselective Cu-catalyzed desymmetrization of meso carbo- and hetero-cyclic bisphosphates to give products with up to three contiguous stereocenters.
The nature of the vibrational modes of amorphous solids is of fundamental interest, but assessing them is challenging due to very long equilibrium times involved. Wang et al. numerically model the localized low-frequency vibrational modes in glasses and show the sensitivity of their populations to glass stability.
The frontal cortex is involved in cognitive control, e.g. cognitive flexibility and behavioral inhibition, but the roles of frontal subdivisions are unclear. Here, the authors used computational modelling of cognitive control task performance to map lesions responsible for impairments in specific cognitive operations.
Temsavir, a compound that inhibits HIV entry by binding envelope (Env), is currently in clinical development. Here, Lai et al. identify a more than 10-fold improved compound and, using lattice engineering, obtain crystal structures that give insights into improved inhibition between small molecules and Env.
Protective antibody responses depend critically on proper B cell development and differentiation at multiple stages. Here the authors show that a protein arginine methyltransferase, Prmt5 uses multiples pathways to prevent death of immature B cells, yet modulates, in p53-independent manners, the survival and differentiation of mature B cells.
Gene editing strategies are typically designed to correct mutant genes, but most neurodegenerative diseases are sporadic. Here the authors describe a strategy to selectively edit the C-terminus of APP and attenuate amyloid-β production, while upregulating neuroprotective α-cleavage.
Transition metal dichalcogenide (TMD) quantum dots (QDs) have promising electronic properties which might be further tailorable by defect engineering. Here the authors describe a room temperature aqueous based synthesis of TMD QDs with controlled defect concentration, and demonstrate the correlation between defect concentration and biomedical activity.
Singlet exciton fission – the separation of photoexcited singlet states into two triplet states – holds promise for enhancing photocurrents in photovoltaic technologies. Krishnapriya et al. characterize how electron delocalization over the bridges in a series of pentacene dimers controls this process.
Motor learning is thought to be mostly procedural, but recent work has suggested that there is a strong cognitive component to it. Here, the authors show that humans use dissociable cognitive strategies, either caching successful responses or using a rule-based strategy, to solve a visuomotor learning task.
Transposable elements (TE) are the dominant constituent of plant genomes. Here the authors develop a tool to analyze TE insertion sites in 3000 rice genomes and provide evidence for recent TE activity during cultivation and that external, rather than genetic, stimuli trigger most activations.
Photonic crystals can steer, shape, and sculpture the flow of photons. Here, the author fabricate a deep-subwavelength photonic crystal slab that supports ultra-confined phonon polaritons, by patterning a nanoscale hole array in h-BN.
MLL3 and MLL4 are members of the SET1/MLL family of histone H3K4 methyltransferases, which are responsible for monomethylating histone H3K4 on enhancers. Here the authors show that an extended PHD domain (ePHD6) in MLL3 and MLL4 specifically recognizes an H4H18-containing fragment of histone H4, and that modifications of residues surrounding H4H18 modulate H4 binding to MLL3/4.
Neurokinin receptors are G protein-coupled receptors. Here the authors present three crystal structures of the neurokinin 1 receptor (NK1R) in complex with small-molecule antagonists including aprepitant and netupitant and observe that these clinically approved compounds induce a conformational change in the receptor.
The human stomach is divided into seven anatomically distinct regions but their protein composition is largely unknown. Here, the authors present a region-resolved map of the healthy human stomach mucosa as well as mucosa proteomes of tumor and tumor nearby tissue from gastric cancer patients.
The mechanisms underlying bacterial persisters formation remain poorly understood. Here, Chen et al. identify a complex formed by extracellular poly(dC) and the binding protein RmlB that controls Pseudomonas aeruginosa persister formation in response to environmental stimuli.
Centriolar separation is thought to be crucial for centriole duplication, but the mechanism behind separation is poorly understood. Here, using micropatterning, the authors report that actomyosin forces influence the direction, distance, and time of centriole separation.