Publications by authors named "Yuchuan Chen"

The objective of this experiment is to investigate the effects of SAP or SAO as ω-3 PUFA raw materials on production performance, egg quality, serum immunity, serum lipids, and fatty acid deposition patterns in the eggs of laying quails. Chinese yellow-feathered quails served as the experimental subjects. A single-factor design was employed to randomly assign 1288 quails into four treatment groups, with seven replicates per treatment and 46 birds in each replicate.

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The prevalence and mortality rates of colorectal cancer (CRC) are increasing worldwide. Radiation resistance hinders radiotherapy, a standard treatment for advanced CRC, leading to local recurrence and metastasis. Elucidating the molecular mechanisms underlying radioresistance in CRC is critical to enhance therapeutic efficacy and patient outcomes.

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Article Synopsis
  • * Short-chain fatty acids (SCFAs), produced by gut microbiota, show potential protective effects against Meth-induced liver injury by normalizing S1R expression and countering the harmful activation of the MAPK/ERK pathway.
  • * The study highlights the important role of S1R in the liver damage caused by Meth and suggests that SCFAs supplementation could serve as a preemptive treatment to alleviate these effects.
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Hepatitis B virus (HBV) can be completely suppressed after antiviral treatment; however, some patients with chronic hepatitis B (CHB) exhibit elevated alanine aminotransferase (ALT) levels and sustained disease progression. This study provides novel insights into the mechanism and potential predictive biomarkers of persistently elevated ALT (PeALT) in patients with CHB after complete viral inhibition. Patients having CHB with undetectable HBV DNA at least 12 months after antiviral treatment were enrolled from a prospective, observational cohort.

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Dietary pollution of Aflatoxin B1 (AFB1) poses a great threat to global food safety, which can result in serious hepatic injuries. Following the widespread use of plastic tableware, co-exposure to microplastics and AFB1 has dramatically increased. However, whether microplastics could exert synergistic effects with AFB1 and amplify its hepatotoxicity, and the underlying mechanisms are still unelucidated.

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  • - The study examines how high productivity and persistent anoxic conditions contribute to the enrichment of organic matter, crucial for creating quality shale, particularly in the Wufeng and Longmaxi Formations in western Chongqing.
  • - Findings reveal that the presence of an oxygen minimum zone (OMZ) significantly influences the distribution of high-quality shales, with intense upwelling boosting productivity during specific geological periods.
  • - Two proposed depositional models highlight the importance of ocean upwelling and OMZ expansion in developing high-quality shales, offering new insights for shale gas exploration strategies.
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Polyethylene terephthalate (PET), primarily utilized for food and beverage packaging, consistently finds its way into the human gut, thereby exerting adverse effects on human health. PET hydrolases, critical for the degradation of PET, have been predominantly sourced from environmental microbial communities. Given the fact that the human gut harbors a vast and intricate consortium of microorganisms, inquiry into the presence of potential PET hydrolases within the human gut microbiota becomes imperative.

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Two previous unreported epipolythiodioxopiperazines of the emestrin family, namely, noremestrin A () and secoemestrin E (), were successfully isolated from the fungal source sp. 1454. Employing comprehensive spectroscopic techniques, such as high-resolution electrospray ionization mass spectrometry, infrared, and nuclear magnetic resonance (NMR), along with NMR and electronic circular dichroism calculations, the chemical structures of compounds and were elucidated.

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  • Five isocoumarin derivatives were isolated from the culture extract of CPCC 400810, including three new compounds named aspermarolides A-C.
  • The structures of the compounds were analyzed using spectroscopic techniques, with specific focus on determining double bond geometry and absolute configuration.
  • None of the compounds demonstrated cytotoxic effects against the HepG2 and HeLa human cancer cell lines tested.
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Nano‑titanium dioxide (nTiO) is a widely used nanomaterial posing potential ecological risk for marine ecosystems that might be enhanced by elevated temperatures such as expected during climate change. nTiO may affect benthic filter feeders like mussels through waterborne exposures and via food chain due to the adsorption on/in algae. Mussel byssus are proteinaceous fibers secreted by byssal glands of the mussels for attachment.

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Antibiotics and nanoplastics (NPs) are among the two most concerned and studied marine emerging contaminants in recent years. Given the large number of different types of antibiotics and NPs, there is a need to apply efficient tools to evaluate their combined toxic effects. Using the thick-shelled mussel (Mytilus coruscus) as a marine ecotoxicological model, we applied a battery of fast enzymatic activity assays and 16S rRNA sequencing to investigate the biochemical and gut microbial response of mussels exposed to antibiotic norfloxacin (NOR) and NPs (80 nm polystyrene beads) alone and in combination at environmentally relevant concentrations.

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Three new hexadepsipeptides (-), along with beauvericin (), beauvericin D (), and four 4-hydroxy-2-pyridone derivatives (-) were isolated from the endophytic fungus sp. CPCC 400857 that derived from the stem of tea plant. Their structures were determined by extensive 1D and 2D NMR, and HRESIMS analyses.

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The architecture of the Golgi apparatus in mammalian cells changes dynamically in response to internal and external cues and may be permanently altered in disease states. Here, we present a method to quantify changes in Golgi morphology using immunofluorescence and confocal microscopy followed by CellProfiler software analysis. This method will assist researchers in evaluating alterations in the Golgi complex morphology of cultured cells under a variety of different experimental conditions.

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Krüppel-like factor 2 (KLF2) is an atherosclerotic protective transcription factor that maintains endothelial cell homeostasis through its anti-inflammatory, anti-oxidant, and antithrombotic properties. The aim of this study was to discover KLF2 activators from microbial secondary metabolites and explore their potential molecular mechanisms. By using a high-throughput screening model based on a promoter luciferase reporter assay, column chromatography, electrospray ionization mass spectrometry (ESI-MS), and nuclear magnetic resonance (NMR) spectra, trichostatin D (TSD) was isolated from the rice fermentation of sp.

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In this paper, we present the discovery of a novel salicylic acid derivative, moldavica acid A (), and a new natural dibenzo[b,f]oxepin, moldavica acid B (), together with four known phenylpropionic acids (-) and protocatechuic acid () that were isolated from L. Their structures were elucidated by comprehensive spectroscopic methods, including infrared and nuclear magnetic resonance. Compound is the first example of salicylic acid linking a carboxylated -pyrone via an ethyl bridge.

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Prenylemestrins A and B ( and , respectively), two unusual epipolythiodioxopiperazines featuring a thioethanothio bridge instead of a polysulfide bridge, were isolated from the fungus sp. CPCC 400858 guided by genomic analysis. Their structures were determined by extensive spectroscopic data, NMR and ECD calculations, and X-ray diffraction analysis.

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Purpose: Real-world evidence refers to patient data derived from the healthcare process. In this study, we used National Health Insurance Research Database (NHIRD) assessments and clinical studies of Ge Gen Tang (GGT, ) in patients with common cold to establish a real-world study model of Traditional Chinese Medicine formulae. GGT is widely prescribed for the treatment of common cold in Taiwan, generally in combination with other medicines.

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Background: Colorectal cancer (CRC) is prevalent worldwide and is often challenged by treatment failure and recurrence due to resistance to radiotherapy. Here, we aimed to identify the elusive underlying molecular mechanisms of radioresistance in CRC.

Methods: Weighted gene co-expression network analysis was used to identify potential radiation-related genes.

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Article Synopsis
  • High-entropy materials (HEMs) exhibit unique properties ideal for energy storage and conversion but are challenging to synthesize in atomic layers due to phase segregation.
  • Researchers successfully create high-entropy atomic layers of transition-metal carbide (HE-MXene) by selectively etching a novel HE-MAX phase, ensuring stable and homogeneous dispersion of transition metals in the layers.
  • The resulting HE-MXene demonstrates advantageous mechanical strain, which facilitates the stable growth of lithium, leading to impressive cycling stability of 1200 hours and significant efficiency in lithium stripping-plating.
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In this study, nanocrystals of a cerium-based metal-organic framework (Ce-MOF), Ce-MOF-808, are directly grown on the surface of carboxylic acid-functionalized carbon nanotubes (CNTs) by a facile one-step solvothermal synthesis method. Ce-MOF-CNT nanocomposites with various Ce-MOF-to-CNT ratios are synthesized, and their crystallinity, morphology, porosity, and electrical conductivity are examined. The redox-hopping and electrochemical behaviors of the pristine Ce-MOF in aqueous electrolytes are investigated, suggesting that the pristine Ce-MOF is electrochemically active but possesses a limited charge-transport behavior.

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The design principle of establishing an intracellular protein gradient for asymmetric cell division is a long-standing fundamental question. While the major molecular players and their interactions have been elucidated via genetic approaches, the diversity and redundancy of natural systems complicate the extraction of critical underlying features. Here, we take a synthetic cell biology approach to construct intracellular asymmetry and asymmetric division in Escherichia coli, in which division is normally symmetric.

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In this study, a strategy that can result in the polyaniline (PANI) solely confined within the nanopores of a metal-organic framework (MOF) without forming obvious bulk PANI between MOF crystals is developed. A water-stable zirconium-based MOF, UiO-66-NH , is selected as the MOF material. The polymerization of aniline is initiated in the acidic suspension of UiO-66-NH nanocrystals in the presence of excess poly(sodium 4-styrenesulfonate) (PSS).

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While cancer immunotherapy has been remarkably successful in some malignancies, some cancers derive limited benefit from current immunotherapies. Here, we combined immune landscape signatures with hepatocellular carcinoma clinical and prognostic features to classify them into distinct subtypes. The immunogenomic profiles, stromal cell features and immune cell composition of the subtypes were then systematically analyzed.

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A redox-active vanadium-based polyoxometalate, VO, was post-synthetically immobilized into a water-stable zirconium-based metal-organic framework, NU-902. The adsorbed VO in NU-902 renders charge hopping in the framework in aqueous electrolytes, and the obtained VO@NU-902 can be used as a heterogeneous electrocatalyst for electrochemical dopamine sensors.

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N-myristoyltransferase-1 (NMT1) catalyzes protein myristoylation, a lipid modification that is elevated in cancer cells. NMT1 sustains proliferation and/or survival of cancer cells through mechanisms that are not completely understood. We used genetic and pharmacological inhibition of NMT1 to further dissect the role of this enzyme in cancer, and found an unexpected essential role for NMT1 at promoting lysosomal metabolic functions.

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