Frequent Genomic Recombination in the 5'-Proximal Region Characterizes Human Adenovirus Species C Evolution.

To advance our understanding of the molecular recombination dynamics of circulating human adenovirus species C (HAdV-C) strains, whole genome sequence (WGS) analysis of seven strains representing five genotypes (P1H1F1, P1H2F2, P89H5F5, P2H2F2, and Px1/Ps3H1F1) isolated from pediatric severe acute respiratory infection (SARI) cases in China were performed, involving sequence similarity assessment, phylogenetic inference, and recombination mapping. The genomic analysis of seven strains showed substantial nucleotide identity (93.5%-99.

Pharmacokinetic and pharmacodynamic integration and resistance analysis of cefquinome against dynamic model.

Introduction: is a major pathogen that causes acute clinical mastitis and its recurrent episodes in dairy cows.

Methods: In this study, a peristaltic pump one-compartment open model was established to investigate the relationship between the pharmacokinetic and pharmacodynamic (PK/PD) indices of cefquinome (CFQ) against . Bactericidal effects of single high-dosage versus multiple low-dosage administrations within the same drug dosage and best-fit dosage were assessed.

Modulating the intestinal flora involves the effect of Atractylodis macrocephalae Rhizoma polysaccharide on spleen deficiency diarrhea.

Atractylodis macrocephalae Rhizoma (AM), a widely used Chinese herb for treating spleen deficiency diarrhea (SDD), is rich in polysaccharides. However, the precise mechanism underlying the antidiarrheal effects of Atractylodis macrocephalae Rhizoma polysaccharide (AMP) remains unclear. In this study, AMP, with a molecular weight of 69 kDa, is isolated from AM and consists of Glc, Gal, and Ara in a molar ratio of 84.

Single-dose GC101 gene therapy for spinal muscular atrophy types II and III: an open-label single-arm study.

QUICK TAKE.

Comparative Effects of Intermittent vs. Constant Ceftiofur Hydrochloride Exposure on In Vitro.

Background/objectives: Ceftiofur hydrochloride (CEF) is a third-generation cephalosporin widely used in cattle to treat various disease. The recommended dosage was 1.1 to 2.

Complex-mediated nucleophilic aromatic substitution with aryl nitriles to realize intramolecular flapping-restricted D-A AIEgens for bioimaging.

Donor-acceptor (D-A) compounds are particularly important in optoelectronic and biological applications. However, they are normally synthesized in the presence of transition metal catalysts. Herein, we report a metal-free method by a complex-mediated nucleophilic aromatic substitution of aryl nitriles with amines.

Advancements and Prospects in DNA-Based Bioanalytical Technology for Environmental Toxicant Detection.

The mounting global crisis of environmental pollution necessitates transformative advances in analytical technologies that combine speed, precision, and field applicability. To meet this demand, next-generation analytical platforms must achieve seamless integration of two critical features: molecular-level recognition fidelity and reliable signal transduction. DNA nanotechnology leverages sequence-specific molecular recognition and programmable self-assembly to enable both natural (e.

Retrotransposon 3S18 forms self-protective aggregates and prolongs mid-oogenesis.

Transposons are prevalent across nearly all species due to their capacity to mobilize in the host genome. However, their products may begin to affect the host before integration occurs. Here, we identified that the activation of transposons results in significantly smaller mid-stage oocytes and prolonged mid-oogenesis of Drosophila.

Epigenetic reprogramming induced by key metabolite depletion is an evolutionarily ancient path to tumorigenesis.

Tumor growth is a challenge for multicellular life forms. Contrary to human tumors, which take years to form, tumors in short-living species can arise within days without accumulating multiple mutations, raising the question whether the paths to tumorigenesis in diverse species have any commonalities. In a fly tumor model caused by loss of cell polarity genes, we identified two key metabolic changes: first, systemic depletion of acetyl-CoA leading to a reduction in histone acetylation levels and stochastic silencing of actively transcribed genes; and second, defects in the methionine cycle causing systemic depletion of S-adenosyl methionine, which further reduces histone methylation levels and causes stochastic activation of transposons.

Efficient nonlinear equalization across S+C+L bands using online knowledge distillation in high-capacity DWDM systems.

We propose an online knowledge distillation method using a teacher-student model for nonlinear equalization in high-symbol-rate dense wavelength division multiplexing (DWDM) system spanning the S+C+L bands. The system features 195 WDM channels with 100 GHz spacing, transmitting 98 GBaud polarization division multiplexing (PDM) probability constellation shaping (PCS) 256-quadrature amplitude modulation (QAM) signals over 150 km of G.654.

CPK28-mediated Ca signaling regulates STOP1 localization and accumulation to facilitate plant aluminum resistance.

The transcription factor SENSITIVE TO PROTON RHIZOTOXICITY 1 (STOP1) functions as a crucial integrator of plant responses to various stresses, including aluminum (Al) stress. Its stability and accumulation are modulated by stress-specific post-translational mechanisms such as phosphorylation and ubiquitination. However, the upstream signaling mechanisms governing these modifications remain poorly understood.

Cytotoxicity evaluation of dental cements containing resin: Effects of the degree of conversion on cellular responses.

Purpose: This study evaluated the cytotoxicity of clinically available dental cements containing resin: conventional adhesive resin cement (ARC), self-adhesive resin cement (SARC), and resin-modified glass-ionomer cement (RMGIC), focusing on their degree of conversion (DC) and effects on cellular responses.

Methods: The DC of all the groups was measured over two weeks under light-free conditions. Cell viability, morphology, and apoptosis were assessed in gingival fibroblasts, dental pulp stem cells, and macrophage cells after exposure to extracts from specimens with different DC values.

Long-term engraftment of human stem and progenitor cells for large-scale production of functional immune cells in engineered pigs.

Existing immunodeficient pig models have demonstrated limited success in supporting robust human haematopoietic engraftment and multilineage differentiation. Here we hypothesize that the targeted deletion of integrin-associated protein (Cd47) in severe combined immunodeficient pigs, with deletions in the X-linked interleukin-2 receptor gamma chain and recombination activating gene 1, would enable long-term haematopoietic engraftment following transplantation with human haematopoietic stem/progenitor cells. In Cd47-deficient pigs, we observed high levels of human haematopoietic chimerism in the blood and spleen, with functional T and B lymphocytes, natural killer and myeloid cells, as well as robust thymopoiesis.

[Phase changes and quantity-quality transfer of raw material, calcined decoction pieces, and standard decoction of Ostreae Concha (Ostrea rivularis)].

The phase changes and quantity-quality transfer of 17 batches of Ostreae Concha(Ostrea rivularis) during the raw material-calcined decoction pieces-standard decoction process were analyzed. The content of calcium carbonate(CaCO_3), the main component, was determined by chemical titration, and the extract yield and transfer rate were calculated. The CaCO_3 content in the raw material, calcined decoction pieces, and standard decoction was 94.

Structural basis of thymidine-rich DNA recognition by Drosophila P75 PWWP domain.

Drosophila P75 (dP75), a homolog of the human LEDGF/p75, is crucial for oogenesis by recruiting the histone kinase Jil-1 to euchromatin and impeding H3K9me2 spreading. Like LEDGF, dP75 binds transcriptionally active chromatin, but its precise mechanism remains unclear. Here we show that its PWWP domain prefers binding to thymidine-rich DNA over GC-rich sequences.

Evaluation of soybean germplasms for resistance to stay-green syndrome.

Stay-green syndrome (SGS) resistant germplasms serve as the cornerstone for soybean improvement. A comprehensive assessment was conducted on a panel of 1553 germplasms to evaluate their resistance to SGS through natural inoculation. Over a three-year period, one landrace, ZaoShuHeiDou, emerged as resilient to SGS, displaying a significantly reduced risk of SGS (p < 0.

UPLC-MS/MS method for simultaneous determination of pyrantel, praziquantel, febantel, fenbendazole and oxfendazole in dog plasma and its application to a bioequivalence study.

A rapid, sensitive and reliable ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) was developed and validated for the simultaneous quantitation of pyrantel (PYR), praziquantel (PRA), febantel (FBT) and its active metabolites, fenbendazole (FEN) and oxfendazole (OXF) in dog plasma. Fenbendazole-D3 (FEN-D3) was used as an internal standard (IS). The analytes and IS were prepared using simple protein precipitation (PP) combined with liquid-liquid extraction (LLE).

Epitope and Paratope Mapping of a SUMO-Remnant Antibody Using Cross-Linking Mass Spectrometry and Molecular Docking.

The small ubiquitin-like modifier (SUMO) is an important post-translational modification that regulates the function of various proteins essential for DNA damage repair, genome integrity, and cell homeostasis. To identify protein SUMOylation effectively, an enrichment step is necessary, often requiring exogenous gene expression in cells and immunoaffinity purification of SUMO-remnant peptides following tryptic digestion. Previously, an antibody was developed to enrich tryptic peptides containing the remnant NQTGG on the receptor lysine, although the specifics of the structural interaction motif remained unclear.

Immunometabolism of Liver Xenotransplantation and Prospective Solutions.

End-stage liver diseases, such as hepatocellular carcinoma or acute liver failure, critically necessitate liver transplantation. However, the shortage of available organ donors fails to meet the rapidly growing transplantation demand. Due to the high similarity of liver tissue structure and metabolism between miniature pigs and humans, xenotransplantation of pig livers is considered as a potentially viable solution to organ scarcity.

Tetrandrine targeting SIRT5 exerts anti-melanoma properties via inducing ROS, ER stress, and blocked autophagy.

Tetrandrine (TET), a natural bisbenzyl isoquinoline alkaloid extracted from S. Moore, has diverse pharmacological effects. However, its effects on melanoma remain unclear.

Thermoformed, thermostable, waterproof and mechanically robust cellulose-based bioplastics enabled by dynamically reversible thia-Michael reaction.

Cellulose is a renewable biodegradable polymer derived from abundant natural resources. Substituting petroleum-based polymers with cellulose-based bioplastics is an effective way to alleviate environmental issues like resource depletion and white pollution. However, challenges such as poor thermostability, difficulty in thermoforming and water sensitivity seriously hinder the fabrication and use of cellulose-based bioplastics.

Bottom-up construction of chiral metal-peptide assemblies from metal cluster motifs.

The exploration of artificial metal-peptide assemblies (MPAs) is one of the most exciting fields because of their great potential for simulating the dynamics and functionality of natural proteins. However, unfavorable enthalpy changes make forming discrete complexes with large and adaptable cavities from flexible peptide ligands challenging. Here, we present a strategy integrating metal-cluster building blocks and peptides to create chiral metal-peptide assemblies and get a family of enantiopure [R-/S-NiL] (n = 2, 3, 6) MPAs, including the R-/S-NiL capsule, the S-NiL trigonal prism, and the R-/S-NiL octahedron cage.

Erratum: Lycorine hydrochloride inhibits melanoma cell proliferation, migration and invasion via down-regulating p21.

[This corrects the article on p. 1391 in vol. 11, PMID: 33948364.

Ln/Cu Bimetallic Nanoclusters with Enhanced NIR-II Luminescence.

Coinage-metal clusters with excellent luminescence properties have attracted considerable interest due to their intriguing structures and potential applications. However, achieving strong near-infrared (NIR) luminescence in these clusters is highly challenging. Here, we have successfully synthesized the first Ln/Cu bimetallic clusters, formulated as [LnCuOCl(2-MeO-PhC≡C)] (ClO) (Ln = Yb for , Er for , and Gd for ).