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Deregulation of signalling is responsible for many cancer phenotypes. Leveraging available perturbation data, here the authors assess large-scale pathway activity patterns based on consensus downstream readout genes, enabling accurate prediction of the effects of mutations and small molecules.
Bacterial infection can cause pain but the underlying mechanism is unclear. This study shows pain induced in mice by methicillin-resistant Staphylococcus aureus infection is mediated by bacterial pore-forming toxins, and a sodium channel blocker QX-314 can alleviate infection-associated pain.
Human tyrosyl-DNA phosphodiesterase 1 (Tdp1) repairs covalently trapped topoisomerase 1B-DNA complexes and other lesions, and is a target for anticancer drug development. Here the authors use an integrated structural approach to shed light onto the molecular basis of DNA end-processing by Tdp1.
Whether the normal state electronic correlations in cuprates are responsible for superconductivity remains elusive. Here, Li et al. report that such correlations turn into a renormalized coherent state starting well above the superconducting transition, and it leads to a strengthened superconductive pairing.
Evidence of inverted trophic pyramids in marine food webs has been enigmatic owing to lack of theoretical support. Here, Woodson et al. use metabolic and size-spectra theory to show that inverted pyramids are possible when food webs have generalist predators and consumers with large body sizes.
Metagenomic sequencing provides a window into microbial community structure and metabolic potential. Here, Swenson et al. integrate metabolomics and shotgun sequencing to functionally link microbial community structure with environmental chemistry in biological soil crust (biocrust).
The ‘pace of life’ depends on both metabolic rate and life history traits; however, whether these evolve similarly in response to the environment is not clear. Here, Auer et al. show parallel evolution of metabolic rate and a suite of life history traits in response to predator environment in Trinidadian guppies.
Early dissemination of cancer cells has been reported to occur in certain breast cancer models. Here the authors show that intra-epithelial macrophages in the early pre-cancer lesions drive early cancer cell dissemination through Wnt-1 secretion and that such events impact the later development of metastasis.
MiRNAs are small RNA molecules that can regulate gene expression. Here the authors show that expression of several exosomal miRNAs are altered in patients with multiple sclerosis, and that let-7i modulates regulatory T cell homeostasis to contribute to pathogenesis.
Treatment of pancreatic ductal adenocarcinoma is still challenging and patients survival has only marginally improved in the last decade. Here the authors produce a PGA-based polymeric nanocarrier for the dual delivery of miR-34a-mimic and PLK1-targeting siRNA resulting in killing of pancreatic cancer cells in vivo.
The antibiotic vancomycin inhibits bacterial cell wall synthesis by binding to a membrane-associated precursor. Here, Blaskovich et al. synthesize vancomycin derivatives containing lipophilic peptide moieties that enhance membrane affinity and in vivo activities against glycopeptide-resistant strains.
In BRAF mutant melanoma, inhibition of ERK1/2 induces FOXD3 and mediates RAF inhibitor resistance. Here, the authors show that ERK1/2 mediated phosphorylation regulates sumoylation of SOX10 which activates FOXD3, and depletion of SOX10 sensitises BRAF mutant melanoma cells to RAF inhibitors.
White-nose syndrome, caused by the fungus Pseudogymnoascus destructans, is decimating North American bats. Here, Palmer et al. use comparative genomics to examine the evolutionary history of this pathogen, and show that it has lost a crucial DNA repair enzyme and is extremely sensitive to UV light.
High homocysteine plasma levels are associated with cardiovascular diseases. Here, Li and colleagues find that homocysteine aggravates vascular injury by direct binding to the angiotensin II type 1 receptor (AT1R), identifying AT1R inhibition as a potential strategy to counteract the deleterious vascular effects of hyperhomocysteinemia.
Type 2 diabetes is associated with impaired wound healing, which can lead to limb loss. Here, the authors show that in Type 2 diabetic mouse models, Dnmt1 is upregulated in hematopoietic stem cells, leading to impaired differentiation towards macrophages, reduced macrophage infiltration in the wound and skewed M1/M2 polarization.
In Parkinson’s disease (PD), neurodegeneration spreads from the brainstem to the cerebral cortex. Here, in a longitudinal study of PD patients, the authors found that cortical thinning followed neural connectivity from a “disease reservoir”.
Genomic polymorphisms affect the epigenome, which in turn influences how epigenome- and genome-wide analysis are interpreted. Here, the authors characterise allelic differences in DNA methylation driven by obligatory or facilitative genetic effects, which may affect disease-related loci.
Cancer cells are reliant on nutrients such as glutamine, which enter the cell via the alanine/serine/cysteine transporter 2 (ASCT2). Here, authors use crystallography to show which amino-acid residues in the substrate-binding site are responsible for conferring glutamine selectivity to ASCT2.
Poly(A)-binding protein (PABP) is an RNA binding protein with translation function. Here, Barragán-Iglesias and colleagues devise an RNA mimic that inhibits PABP activity, and show that inhibitors can reduce animal’s pain response in vivo when injected locally.
Extracting kinetic models from high-throughput molecular dynamics (MD) simulations is laborious and prone to human error. Here the authors introduce a deep learning framework that automates construction of Markov state models from MD simulation data.