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Shigella, an important human pathogen, can secrete effector proteins to invade host cells and evade mechanisms of cell-autonomous immunity. In a new manuscript published in Nature Communications, Xian et al. report that the Shigella kinase effector OspG promotes the ubiquitination of septin cytoskeletal proteins to evade cage entrapment.
The direct C−H-difluoromethylation of pyridines represents a highly efficient economic way to access azines. However, the direct meta-difluoromethylation of pyridines remains elusive. Here, the authors demonstrate switchable meta- as well as para-C−H difluoromethylation of pyridines through radical processes by using oxazino pyridine intermediates.
Previous studies of the skin have suggested a neutral-to-acidic pH gradient in the outermost layer. Here, the authors perform quantitative intravital pH imaging of the stratum corneum, the outermost epidermal layer, and demonstrate three distinct pH zones - rather than a gradient - with different biological functions.
Skeletal ryanodine receptor controls calcium mobilization indispensable for muscle contraction. Here, authors combine cryo-EM and molecular dynamics to uncover the structural basis of the intricate regulation of this channel by calcium and magnesium.
Authors explore the utility of CD5L for treating experimental sepsis. CD5L deficiency exacerbates experimental sepsis. Conversely, administration of recombinant CD5L in WT mice augments neutrophil function, enhances bacterial control, and mitigates inflammation, leading to substantial improvements in disease outcomes.
Controlling multiple stereogenic centers in a single molecular scaffold represents a challenge for current switchable asymmetric catalysts. Here, the authors achieve asymmetric stereodivergency by means of a switchable supramolecular helical catalyst allowing all stereoisomers to be obtained with high and similar enantioselectivities.
Neural circuitry conveying visual information to the medial entorhinal cortex (MEC), a crucial region for spatial cognition, is not fully understood. Here, the authors report a direct pathway from the secondary visual cortex to MEC layer 5a in mice and its involvement in memory-guided navigation, thus revealing a role of deep MEC in sensory information transmission.
The endoplasmic reticulum (ER) is a major site of lipid peroxidation during ferroptosis. Here authors show that the ER protein IRE1α determines ferroptosis induction via regulating glutathione synthesis independent of the unfolded protein response.
Biosensing tools to detect multiple analytes in a high-throughput manner are still hindered by many limitations. Here, the authors present a label-free optofluidic platform integrating digital holography and microfluidics for analyte detection, allowing for the fingerprinting of heterogenous biological samples.
Microbial reduction of nitrous oxide to dinitrogen is considered negligible under acidic conditions. However, Guang He et al. show that a co-culture of two bacterial species derived from acidic tropical forest soil can reduce nitrous oxide at pH 4.5.
Here the authors show that the human transcription elongation factor AF9, part of Super Elongation Complex (SEC), undergoes oligomerization which can be reverted by post-translational modification in regulation of global transcription.
Application of Molybdenum alloys is hindered by reduced ductility at lower temperatures. Here, the author shows improved ductility in a Mo alloy with irregular-shaped rare-earth La2O3 nanoparticles achieved via rotary-swaging, attributed to the amorphization of the oxide-matrix interface.
The exploration of heterogeneous interfaces between metal oxides has received limited attention. Here the authors demonstrated the creation of MnO2-MnxCo3-xO4 interfaces through controlled chemical reduction processes, effectively altering electron distribution and yielding a superior catalyst for ethane oxidation.
The use of oncolytic viruses as a therapy for cancer is limited by mechanisms inhibiting viral replication in the tumor. Here, the authors show that a chemical derivative of itaconate, 4-octyl itaconate, increases oncolytic virus VSVΔ51 efficacy in various cancer models, through decreasing antiviral immunity.
Plasma proteins are a potential diagnostic tool to detect multiple diseases, including cancer. Here, the authors leverage multi-omics data to identify 1,463 proteins associated with 19 common cancers in UK Biobank participants. Reviewer Recognition:
Dysregulation of basal progenitor cells induces esophageal tumorigenesis but the underlying mechanism is less explored. Here, the authors show that Jag1/2 deficiency promotes expansion of basal progenitor cells, leading to reduced squamous epithelial differentiation and enhanced formation of squamous cell carcinoma in the foregut.
Clarifying migration timing and how it links with underlying drivers is essential to understanding bird migration. This study finds body mass affects the timing of both spring and autumn migration, while environmental factors mainly affect the timing of spring migration.
Cibisatamab is a T-cell bispecific antibody targeting the carcinoembryonic antigen (CEA) on tumor cells and CD3 epsilon chain on T cells. Here the authors report the results of two clinical trials of cibisatamab as monotherapy (NCT02324257) and in combination with atezolizumab (anti-PD-L1; NCT02650713) in patients with CEA-positive solid tumors.
Detecting tipping points and predicting extreme events from data remains a challenging problem in complex systems related to climate, ecology and finance. The authors propose a data-driven approach to estimate probabilities of rare events in complex systems, and detect tipping points/catastrophic shifts.
Intranuclear actin contributes to nuclear structure. Inducing actin remodeling within the nucleus regulates chromatin accessibility, and is associated with phenotypic outcomes in mesenchymal stem cells. As such, dynamic actin remodeling may modulate gene expression.