Phosphorus limitation induces membrane lipid remodeling in aquatic phytoplankton.

Phosphorus (P) is a critical limiting nutrient for phytoplankton growth in aquatic ecosystems. Under P-limitation, phytoplankton adapt by remodeling membrane lipids, replacing phospholipids (PLs) with non-P lipids such as sulfolipid sulfoquinovosyldiacylglycerol (SQDG) and betaine lipids (BLs). This mechanism is essential for reevaluating the relationship between phosphate (PO) concentrations and primary productivity.

Environmental investment and green innovation in polluting enterprises: Evidence from heavily polluting listed firms in China.

This study explores the impact of environmental investment on green innovation in heavily polluting enterprises using data from Chinese listed firms (2010-2022). Theoretical analysis based on the neoclassical growth model suggests that environmental investment fosters green innovation. Empirical results confirm this positive effect, although its strength varies with internal and external factors.

Dual-synergistic molybdenum disulfide and molybdenum carbide cocatalyst integrated with graphitic carbon nitride for efficient photocatalytic hydrogen production.

Heterojunctions have garnered significant attention in the field of photocatalysis due to their exceptional ability to facilitate the separation of photogenerated charge carriers and their high efficiency in hydrogen reaction. However, their overall photocatalytic performance is often constrained by electron transport rates and suboptimal hydrogen adsorption/desorption kinetics. To address these challenges, this study develops a g-CN/MoS@MoC dual-effect synergistic solid-state Z-type heterojunction, synthesized through the in-situ sulfurization of MoC combined with ultrasonic self-assembly technique.

Metal organic frameworks derived Fe-CoF/MXene composites as efficient Electrocatalysts for the overall water splitting.

Transition metal fluorides because of the high electronegativity of fluorine may enhance the local electron density of the metal sites and promote water molecule dissociation and charge transfer. However, enhancing the intrinsic activity of fluorides to improve material stability remains a challenge. Herein, we develop an innovative four-step synthetic strategy (electrochemical deposition → co-precipitation → ligand exchange → in situ fluorination) to engineer three-dimensional porous Fe-doped CoF nanocubes vertically anchored on MXene (Fe-CoF/MXene/NF).

Rational design of Pt-integrated SnNbO/BiMoO monolayer S-scheme heterojunction for efficient ethylene removal toward fresh produce preservation.

Effective removal of ethylene (CH) during fruit and vegetables storage and transport remains a critical challenge for post-harvest preservation. Although S-scheme heterojunctions can improve charge separation and redox capacity for ethylene degradation, their efficiency is still restricted by limited carrier transfer and sluggish oxygen activation. Here, we rationally designed a novel 2D/2D SnNbO/BiMoO monolayer S-scheme heterojunction integrated with Pt co-catalyst to address these limitations.

Preparation, characterization, and antioxidant activity of bovine bone peptide-calcium chelate against oxidative stress-induced injury in Caco-2 cells.

In this study, bovine peptide‑calcium chelates (BBP-Ca) were prepared via enzymatic hydrolysis to generate peptides and fermentation to obtain soluble calcium ions, which were then chelated together. The structural characteristics of BBP-Ca were comprehensively analyzed using FTIR, SEM, and UV spectroscopy. Additionally, its antioxidant capacity was evaluated by examining its protective effects against oxidative stress-induced damage in Caco-2 cells.

Transcriptomics and metabolomics provide insights into the mechanisms of softening in Agaricus bisporus due to infestation by Trichoderma harzianum.

Postharvest softening of Agaricus bisporus (A. bisporus) is a major factor in its quality deterioration. However, the physiological changes involved in softening of A.

Tumor-associated neutrophils promote breast cancer progression via RLN2/RXFP1-C6orf99-STAT3 axis.

Tumor-associated neutrophils (TANs) play a critical role in breast cancer progression. This study demonstrated that high CD66b TANs infiltration correlated with poor disease-free survival (DFS) and promoted proliferation, migration, and invasion of breast cancer cells in vitro. Conversely, the immune-related long non-coding RNA C6orf99 was downregulated in breast cancer and associated with favorable DFS.

In-situ extrusion 3D printing with tea polyphenol crosslinking for Hyaluronic acid sodium salt -based composite hydrogel scaffolds.

High-performance hydrogel biomaterials hold considerable promise for advanced wound care. However, the suboptimal mechanical properties of conventional hydrogel materials limit their practical application. In this study, Hyaluronic acid sodium salt (HA), xanthan gum (XG), and N-acryloyl-glycinamide (NAGA) hydrogels with porous structures were successfully fabricated using in-situ extrusion 3D printing technology, and a functionalization strategy involving tea polyphenol (TP) immersion was proposed to enhance material properties through additional hydrogen bonding.

Reproduction, metabolic enzyme activity, and metabolomics in earthworms Eisenia fetida exposed to different polymer microplastics.

Plastics degradation generates microplastics (MPs), posing a risk to soil function and organisms. Currently, the impact of MPs derived from different polymers remains poorly understood. In this study, the effects of three polymers (polypropylene (PP), polylactic acid (PLA), and polybutylene adipate terephthalate (PBAT)) were investigated at environmentally relevant levels (0, 0.

Layer-dependent and delayed responses of disinfection by-product precursors to rainfall events in a stratified deepwater reservoir.

Rainfall events significantly increase dissolved organic matter (DOM) and disinfection by-product (DBP) precursors in the reservoir, threatening water supply security. However, the vertical variations and ecological drivers of DBP precursors in the deepwater stratified reservoir during rainfall events remain poorly understood. This study investigated DOM composition, DBP precursors, nutrients, metals, and algae in the Sanhekou Reservoir under stormwater influence.

Orbital energy level engineering: 3d high-spin Mn's d-electron mediating electronic structure of VO boosting highly durable aqueous ammonium ion batteries.

Aqueous batteries have become a prospective future energy storage system because of their low coefficient of cost and stability. However, their lower energy density limits their applications. Ammonium ions (NH) have a small hydration radius and light molar mass, and aqueous ammonium ion batteries (AAIBs) are anticipated for solving the inherent low-energy density problem of aqueous batteries.

Selenium-regulated band structure engineering in CF cathodes enables high-power and wide-temperature Li/CF primary batteries.

Li/CF primary batteries are renowned for their exceptional energy density, yet their practical deployment is hindered by the inherently sluggish kinetics of the CF cathode. This study addresses this limitation by incorporating selenium (Se) into CF (denoted as CF/Se) via a facile low-temperature thermal treatment, significantly enhancing its electrochemical performance. Comprehensive spectroscopic and electrochemical analyses reveal that Se doping induces the formation of CSe bonds, which promote semi-ionic CF bonding, thereby accelerating Li diffusion and reducing charge transfer resistance.

Structure-guided discovery of nitrobenzo-2-oxa-1,3-diazole (NBD) scaffold-based PFKFB4 inhibitors for cancer therapy.

Cancer remains a leading global cause of mortality, with treatment efficacy often compromised by drug resistance, highlighting the urgent need for novel targeted therapies. The enzyme fructose-2,6-bisphosphatase 4 (PFKFB4) governs glycolytic flux by modulating fructose-2,6-bisphosphate (F2,6BP) levels. PFKFB4 overexpression has been observed in various cancers and correlates with tumor growth, aggressiveness, and poor prognosis.

A collagen/silk fibroin/magnesium hydroxide multifunctional sponge with enhanced mechanical strength, rapid hemostasis, and antibacterial properties for promoting infectious wound healing.

Hemostatic intervention at the bleeding site during early-phase wound management plays a crucial role in reducing trauma-induced complications and mortality, while advanced wound dressings facilitate hemorrhage control, exudate management, and antimicrobial protection to promote optimal healing outcomes. To address these issues, we developed a multifunctional collagen/silk fibroin/Mg(OH)₂ (Col/SF/Mg(OH)₂) composite sponge combining enhanced mechanical strength, rapid hemostasis, and broad-spectrum antibacterial activity. The incorporation of silk fibroin (SF) through covalent crosslinking increased the elastic modulus by 4.

Unveiling the binding details of berberine mid-chain fatty acid salts on lysozyme: Multi-spectroscopy and molecular docking.

The interactions of three berberine mid-chain fatty acid salts ([BBR][C], n = 6, 7, 8) with lysozyme (Lyz) are investigated in detail using multi-spectroscopic and molecular docking techniques. Steady-state fluorescence and UV-visible absorption experiments suggest that the binding mechanism of [BBR][C] on Lyz is a static quenching with a binding ratio of 1:1. The compound [BBR][C] exhibits a moderate binding affinity toward Lyz.

Viscosity-sensitive fluorescent probes based on the hemicyanine for the organelle-specific visualization during autophagy and ferroptosis.

The dynamic monitoring of cell death processes remains a significant challenge due to the scarcity of highly sensitive molecular tools. In this study, two hemicyanine-based probes (5a-5b) with D-π-A structures were developed for organelle-specific viscosity monitoring. Both probes exhibited correlation with the Förster-Hoffmann viscosity-dependent relationship (R > 0.

Resolve and regulate: Alum nanoplatform coordinating STING availability and agonist delivery for enhanced anti-tumor immunotherapy.

The stimulator of interferon genes (STING) pathway represents a promising target in cancer immunotherapy. However, the clinical translation of cyclic dinucleotide (CDN)-based STING agonists remains hindered by insufficient formation of functional CDN-STING complexes. This critical bottleneck arises from two interdependent barriers: inefficient cytosolic CDN delivery and tumor-specific STING silencing via DNA methyltransferase-mediated promoter hypermethylation.

Asymmetric Fe-O-Ni Pair Sites in Two-Step Dealloyed Prussian Blue Analogue Nanocubes Enrich Linear-Adsorbed Intermediates for Efficient Oxygen Evolution.

Ni-Fe (oxy)hydroxides are among the most active oxygen evolution reaction (OER) catalysts in alkaline media. However, achieving precise control over local asymmetric Fe-O-Ni active sites in Ni-Fe oxyhydroxides for key oxygenated intermediates' adsorption steric configuration regulation of the OER is still challenging. Herein, we report a two-step dealloying strategy to fabricate asymmetric Fe-O-Ni pair sites in the shell of NiOOH@FeOOH/NiOOH heterostructures from NiFe Prussian blue analogue (PBA) nanocubes, involving anion exchange and structure reconstruction.

Photofunctionalization of Light Alkanes by FeO/BCN at 12 °C.

The activation of methane and other gaseous hydrocarbons at low temperature remains a substantial challenge for the chemistry community. Here, we report an anaerobic photosystem based on crystalline borocarbonitride (BCN) supported Fe-O nanoclusters, which can selectively functionalize C-H bonds of methane, ethane, and higher alkanes to value-added organic chemicals at 12 °C. Scanning transmission electron microscopy and X-ray absorption spectroscopy corroborated the ultrafine FeOOH and FeO species in Fe-O clusters, which enhanced the interfacial charge transfer/separation of BCN as well as the chemisorption of methane.

20(R)-ginsenoside Rg3 Inhibits Neuroinflammation Induced by Cerebral Ischemia/Reperfusion Injury by Regulating the Toll-Like Receptor 4/Myeloid Differentiation Factor-88/Nuclear Factor Kappa B Signaling Pathway.

20(R)-ginsenoside Rg3 can reduce the effects of oxidative stress and cell death in cerebral ischemia‒reperfusion injury (CIRI). Neuroinflammation is crucial post-CIRI, but how 20(R)-Rg3 affects ischemia‒reperfusion-induced neuroinflammation is unclear. To study 20(R)-Rg3's effects on neuroinflammation and neuronal preservation in stroke models and explore toll-like receptor 4/myeloid differentiation factor-88/nuclear factor kappa B (TLR4/MyD88/NF-κB) pathway mechanisms.

Umbelliferone Alleviates Sleep Deprivation Induced Cognitive Impairment through the Modulation of Gut Microbiota.

Sleep deprivation (SD) is a major contributor to cognitive impairment, often accompanied by central neuroinflammation and gut microbiota dysbiosis. The tryptophan (TRP) pathway, activated via indoleamine 2,3-dioxygenase (IDO), serves as a critical link between immune activation and neuronal damage. Umbelliferone (UMB), a naturally occurring coumarin compound, possesses anti-inflammatory, antioxidant, and microbiota-modulating properties.

Bidirectional Modulation of α-Glucosidase by Steroidal Saponins From Polygonatum kingianum var. grandifolium: Inhibitory and Activating Effects Align With the Yin-Yang Balance Theory.

Three new steroidal saponins, kingianoside L-N (1-3), whose structures were elucidated through comprehensive spectroscopic analysis, and 15 known compounds (4-18) were isolated from Polygonatum kingianum var. grandifolium, a source of the traditional antihyperglycemic medicine Polygonati rhizome. The effects of compounds 1-13 on α-glucosidase activity were evaluated in vitro.

Design, Synthesis, and Antimicrobial Evaluation of Novel Thiazolyl-Based Compounds Incorporating Bioactive Amide and Hydrazide Groups.

In recent years, the hydrazide skeleton, as a pivotal class of nitrogen-containing structures, has garnered considerable attention in medicinal chemistry and organic synthesis owing to its unique chemical versatility and broad-spectrum biological activities. In this study, a series of thiazole-containing benzoylhydrazine derivatives -, -, and - with structural divergence from conventional hydrazide-based molecular frameworks were designed, synthesized, and evaluated for their antifungal/antioomycete activities. The antifungal/antioomycete assay showed that some of the targeted compounds exhibited remarkable and broad-spectrum antifungal activities.

The Essence of Nature Can be the Simplest (6)-Lifespan: Determined by Extracellular Fenton Chemistry.

Understanding the determinants of lifespan is a central objective in biology. Lifespan is shaped by dynamic, stage-specific changes in metabolism, energy allocation, and genome integrity. Heart rate serves as a physiological marker that reflects both life stage and metabolic state.