Ligand guided in vivo crosslinking and affinity purification mass spectrometry for identifying membrane receptors of Tau.

Misfolded neurotoxic proteins, such as Tau protein, spread within the brain in many neurodegenerative diseases. Receptors play an important role in the recognition of spreading proteins for endocytosis. Blocking the receptors is essential to inhibit neurotoxic proteins spreading in the brain.

Regulating the Thermodynamic Uniformity and Kinetic Diffusion of Zinc Anodes for Deep Cycling of Ah-Level Aqueous Zinc-Metal Batteries.

Zn metal anodes in mildly acidic electrolytes usually suffer from a series of problems, including parasitic dendrite growth and severe side reactions, significantly limiting the Zn utilization efficiency and cycling life. A deep understanding of the Zn stripping/plating process is essential to obtain high-efficiency and long-life Zn metal anodes. Here, the factors affecting the Zn stripping/plating process are revealed, suggesting that thermodynamic uniformity in bulk structures promotes an orderly Zn stripping process, and a fast kinetic diffusion rate on the Zn surface facilitates uniform Zn deposition.

Photochemistry of Microsolvated Nitrous Acid: Observation of the Water-Separated Complex of Nitric Oxide and Hydroxyl Radical.

The photochemistry of nitrous acid (HONO) plays a crucial role in atmospheric chemistry as it serves as a key source of hydroxyl radicals (OH) in the atmosphere; however, our comprehension of the underlying mechanism for the photochemistry of HONO especially in the presence of water is far from being complete as the transient intermediates in the photoreactions have not been observed. Herein, we report the photochemistry of microsolvated HONO by water in a cryogenic N matrix. Specifically, the 1:1 hydrogen-bonded water complex of HONO was facially prepared in the matrix through stepwise photolytic O oxidation of the water complex of imidogen (NH-HO) via the intermediacy of the elusive water complex of peroxyl isomer HNOO.

Spatial multi-omics characterizes GPR35-relevant lipid metabolism signatures across liver zonation in MASLD.

Metabolic dysfunction-associated steatotic liver disease (MASLD) is a metabolic disease that can progress to metabolic dysfunction-associated steatohepatitis (MASH), cirrhosis, and cancer. The zonal distribution of biomolecules in the liver is implicated in mediating the disease progression. Recently, G-protein-coupled receptor 35 (GPR35) has been highlighted to play a role in MASLD, but the precise mechanism is not fully understood, particularly, in a liver-zonal manner.

A Solvatochromic and Photosensitized Lipid Droplet Probe Detects Local Polarity Heterogeneity and Labels Interacting Proteins in Human Liver Disease Tissue.

The intricate morphology, physicochemical properties, and interacting proteins of lipid droplets (LDs) are associated with cell metabolism and related diseases. To uncover these layers of information, a solvatochromic and photosensitized LDs-targeted probe based on the furan-based D-D-π-A scaffold is developed to offer the following integrated functions. First, the turn-on fluorescence of the probe upon selectively binding to LDs allows for direct visualization of their location and morphology.

Palladium-Catalyzed Alkoxycarbonylation of Alcohols for the Synthesis of Cyclobutanecarboxylates with α-Quaternary Carbon Centers.

A palladium-catalyzed alkoxycarbonylation with two different alcohols for the synthesis of cyclobutanecarboxylates bearing an α-quaternary carbon center is presented. The reaction utilizes readily accessible starting materials, tolerates a broad scope of functional groups, and provides a straightforward and efficient approach for the synthesis of a diverse array of cyclobutanecarboxylates bearing an α-quaternary carbon. Meanwhile, this strategy effectively prevents the transition-metal-catalyzed ring-opening of cyclobutanols, preserves the cyclobutane framework, and affords 1,1-disubstituted cyclobutanecarboxylates in high yields with excellent regioisomeric ratios.

High-level production of free fatty acids from lignocellulose hydrolysate by co-utilizing glucose and xylose in yeast.

Lignocellulose bio-refinery via microbial cell factories for chemical production represents a renewable and sustainable route in response to resource starvation and environmental concerns. However, the challenges associated with the co-utilization of xylose and glucose often hinders the efficiency of lignocellulose bioconversion. Here, we engineered yeast to effectively produce free fatty acids from lignocellulose.

Utilizing 4-Sulfonylcalix[4]arene as a Selective Mobile Phase Additive for the Capture of Methylated Peptides.

Protein methylation has attracted increasing attention due to its significant regulatory roles in various biological processes. However, the diversity of methylation forms, subtle differences between methylated and nonmodified sites, and their ultralow abundances pose substantial challenges for capturing and isolating methylated peptides from biological samples. Herein, we develop a chromatographic method that utilizes 4-sulfonylcalix[4]arene (SC4A) as a mobile phase additive and Click-Maltose as the stationary phase to separate methylated/nonmethylated peptides through the adsorption of the SC4A-(Me3) complex.

Colorimetric and fluorescent probe assisted by smartphone app for monitoring fish freshness.

In this study, a novel "OFF-ON" fluorescent probe MPZ ((E)-5-((10-ethyl-2-methoxy-10H-phenothiazin-3-yl)methylene)thiazolidine-2,4-dione) based on phenothiazine is synthesized, which can rapidly (7 s) detect biogenic amines (BAs) through deprotonation, utilizing both colorimetric and fluorescent dual channels. An app for visual portable detection of fish freshness, named "Visual Evaluation", is independently developed. This app integrates several functions, including image capture, editable scanning of red, green, and blue (RGB) values, data analysis fitting, data storage, and verification.

Near-infrared-triggered release of self-accelerating cascade nanoreactor delivered by macrophages for synergistic tumor photothermal therapy/starvation therapy/chemodynamic therapy.

Macrophages have emerged as promising cellular vehicles for the delivery of therapeutic agents to tumor sites. However, the cytotoxicity of therapeutic agents toward the cellular carriers and the effective release of therapeutic agents at the tumor site remain the main challenges faced by macrophage-mediated drug delivery systems. Herein, a near-infrared (NIR)-triggered release of self-accelerating cascade nanoreactor (HCFG) delivered by macrophages (HCFG@R) was developed for synergistic tumor photothermal therapy (PTT)/starvation therapy (ST)/chemodynamic therapy (CDT).

Nickel-Catalyzed Cyclization/Carbonylation Reaction of -Allylbromoacetamides with Arylboronic Acids toward 2-Pyrrolidinones.

A straightforward and efficient nickel-catalyzed cyclization/carbonylation transformation of -allylbromoacetamides toward the synthesis of 2-pyrrolidinone derivatives has been developed with arylboronic acids as the reaction partner. This transformation proceeds through a sequential single-electron-transfer pathway via 5-- cyclization and carbonyl insertion steps, furnishing a variety of 2-pyrrolidinone derivatives in good yields. Various useful functional groups were well tolerated.

[Promotion of sp. on the photosynthetic growth of microalgae exposed to high concentrations of formate].

Formate is an important solar fuel, with large application potential in bioconversion. Especially, the win-win collaboration is achieved when formate is applied to the cultivation of microalgae, which combines the advantages from both artificial and natural photosynthesis. However, the inhibition of formate on the photosynthetic electron transport hinders the application of formate at high concentrations.

Assembly and architecture of endogenous NMDA receptors in adult cerebral cortex and hippocampus.

The cerebral cortex and hippocampus are crucial brain regions for learning and memory, which depend on activity-induced synaptic plasticity involving N-methyl-ᴅ-aspartate receptors (NMDARs). However, subunit assembly and molecular architecture of endogenous NMDARs (eNMDARs) in the brain remain elusive. Using conformation- and subunit-dependent antibodies, we purified eNMDARs from adult rat cerebral cortex and hippocampus.

Modulating Electronic Density of Single-Atom Ni Center by Heteroatoms for Efficient CO Electroreduction.

Single-atom catalysts (SACs) with unique geometric and electronic configurations have triggered great interest in many important reactions. However, controllably modulating the electronic structure of metal centers to enhance catalytic performance remains a challenge. Here, the electronic structure of Ni centers over Ni-NC SACs by introducing electron-rich phosphorus or electron-deficient boron for electrochemical CO reduction (CORR) is systematically tailored.

Insights on Fabrication Strategies and Energy Storage Mechanisms of Transition Metal Dichalcogenides Cathodes for Aqueous Zn-Based Batteries.

Aqueous zinc-based batteries (AZBs) are gaining widespread attention owing to their intrinsic safety, relatively low electrode potential, and high theoretical capacity. Transition metal dichalcogenides (TMDs) have convenient 2D ion diffusion channels, so they have been identified as promising host materials for AZBs, but face several key challenges such as the narrow interlayer spacing and the lack of in-deep understanding energy storage mechanisms. This review presents a comprehensive summary and discussion of the intrinsic structure, charge storage mechanisms, and key fabrication strategies of TMD-based cathodes for AZBs.

Boosting Multicolor Emission Enhancement in Two-Dimensional Covalent-Organic Frameworks via the Pressure-Tuned π-π Stacking Mode.

Covalent-organic frameworks (COFs) are dynamic covalent porous organic materials constructed from emissive molecular organic building blocks. However, most two-dimensional (2D) COFs are nonemissive or weakly emissive in the solid state owing to the intramolecular rotation and vibration together with strong π-π interactions. Herein, we report a pressure strategy to achieve the bright multicolor emission from yellow to red in the 2D triazine triphenyl imine COF (TTI-COF).

ITGAX promotes gastric cancer progression via epithelial-mesenchymal transition pathway.

Gastric cancer is the fifth most common cancer and the fourth leading cause of cancer-related deaths worldwide, accounting for nearly 800,000 fatalities annually. ITGAX (Integrin alpha X) is closely associated with immune cells, such as macrophages and dendritic cells. Its involvement in gastric cancer was identified through an analysis of The Gene Expression Omnibus (GEO) database, which highlighted as one of four key gastric cancer-related genes.

Broad-Temperature Optical Thermometry via Dual Sensitivity of Self-Trapped Excitons Lifetime and Higher-Order Phonon Anharmonicity in Lead-Free Perovskites.

Broad-temperature optical thermometry necessitates materials with exceptional sensitivity and stability across varied thermal conditions, presenting challenges for conventional systems. Here, we report a lead-free, vacancy-ordered perovskite Cs2TeCl6, that achieves precise temperature sensing through a novel combination of self-trapped excitons (STEs) photoluminescence (PL) lifetime modulation and unprecedented fifth-order phonon anharmonicity. The STEs PL lifetime demonstrates a highly temperature-sensitive response from 200 to 300 K, ideal for low-to-intermediate thermal sensing.

[Vacuum ultraviolet laser dissociation and proteomic analysis of halogenated peptides].

Chemical modifications are widely used in research fields such as quantitative proteomics and interaction analyses. Chemical-modification targets can be roughly divided into four categories, including those that integrate isotope labels for quantification purposes, probe the structures of proteins through covalent labeling or cross-linking, incorporate labels to improve the ionization or dissociation of characteristic peptides in complex mixtures, and affinity-enrich various poorly abundant protein translational modifications (PTMs). A chemical modification reaction needs to be simple and efficient for use in proteomics analysis, and should be performed without any complicated process for preparing the labeling reagent.

Promoting in-situ stability of hydroxide exchange membranes by thermally conductive network for durable water electrolysis.

Hydroxide exchange membrane (HEM) water electrolysis is promising for green hydrogen production due to its low cost and excellent performance. However, HEM often has insufficient stability in strong alkaline solutions, particularly under in-situ electrolysis operation conditions, hindering its commercialization. In this study, we discover that the in-situ stability of HEM is primarily impaired by the locally accumulated heat in HEM due to its low thermal conductivity.

Odyssey in the Wonderland of Chemical Dynamics.

This is a recollection of my scientific trajectory. When I look back, I consider myself to be very fortunate for being able to do something I love and on topics of my own will. I am not a competitive person and tend to shy away from the limelight.

Proton-Controlled Electron Injection in MoS During Hydrogen Evolution Revealed by Time-Resolved Spectroelectrochemistry.

Monolayer MoS is an effective electrocatalyst for the hydrogen evolution reaction (HER). Despite significant efforts to optimize the active sites, its catalytic performance still falls short of theoretical predictions. One key factor that has often been overlooked is the electron injection from the conductive substrate into the MoS.

New Algorithms to Generate Permutationally Invariant Polynomials and Fundamental Invariants for Potential Energy Surface Fitting.

Symmetric functions, such as Permutationally Invariant Polynomials (PIPs) and Fundamental Invariants (FIs), are effective and concise descriptors for incorporating permutation symmetry into neural network (NN) potential energy surface (PES) fitting. The traditional algorithm for generating such symmetric polynomials has a factorial time complexity of , where is the number of identical atoms, posing a significant challenge to applying symmetric polynomials as descriptors of NN PESs for larger systems, particularly with more than 10 atoms. Herein, we report a new algorithm which has only linear time complexity for identical atoms.

Correction: Single glucose molecule transport process revealed by force tracing and molecular dynamics simulations.

Correction for 'Single glucose molecule transport process revealed by force tracing and molecular dynamics simulations' by Yangang Pan , , 2018, , 517-524, https://doi.org/10.1039/C8NH00056E.