Publications by authors named "Mengwei Xu"

: Bovine viral diarrhea virus (BVDV) causes significant economic losses in the cattle industry worldwide. The current vaccines have limited efficacy against diverse BVDV genotypes. Currently, multi-antigen target design and nanocarrier display technologies can provide ideas for broad-spectrum and efficient BVDV vaccine design.

View Article and Find Full Text PDF

This study aimed to develop monoclonal antibodies (mAbs) against the gD protein of FHV-1 for rapid and specific virus detection. The gD protein, a highly conserved part of the FHV-1 envelope, is crucial for viral entry into host cells, making it an ideal detection target. We immunized BALB/c mice with an mRNA vaccine encoding the gD gene, achieving a serum antibody titer of 1:140,000 after three immunizations.

View Article and Find Full Text PDF

Forgetting is inevitable in human memory. Recently, multimodal embedding models have been proposed to vectorize multimodal reality into a unified embedding space. Once generated, these embeddings allow mobile users to quickly retrieve relevant information, effectively augmenting their memory.

View Article and Find Full Text PDF

Objective: This study aims to evaluate the clinical utility of Ga-pentixafor PET/MRI in diagnosing primary aldosteronism (PA) in functional adrenal nodules, with a particular focus on subcentimeter nodules. Additionally, the diagnostic performance of integrated PET/MRI is compared to single-modality PET imaging.

Methods: A total of 62 patients with clinical suspicion of PA were enrolled from a tertiary hospital in China.

View Article and Find Full Text PDF

As an emerging flavivirus, Duck Tembusu virus (DTMUV) causes severe neurological disorder and acute egg drop syndrome in poultry. Herein, we report the development of a highly effective mRNA vaccine against DTMUV using lipid nanoparticle (LNP) delivery technology. We engineered an mRNA construct encoding the pre-membrane (prM) and envelope (E) proteins of DTMUV, with an upstream signal peptide to enhance secretion.

View Article and Find Full Text PDF

The swine industry experiences substantial economic losses annually due to the porcine reproductive and respiratory syndrome virus (PRRSV). The limited protective efficacy of existing commercial vaccines against epidemic PRRSV underscores the urgent need for innovative solutions. The mRNA vaccines, which elicit robust immune responses, have emerged as a promising avenue in vaccine development.

View Article and Find Full Text PDF

4'-Fluorouridine (4'-FU), despite demonstrating potent anti-SFTSV efficacy in vitro and in vivo, faces hindrances in its further development as a promising drug due to its weak chemical stability. Here, we report the discovery and development of VV261, a novel 4'-FU double prodrug with three isobutyryl groups on the ribose moiety and a nicotinoyloxymethyl group linked to the imide-nitrogen on the base moiety, exhibiting notable chemical stability and favorable pharmacokinetic properties. In SFTSV-infected mice, VV261 at 5 mg/kg/d for 7 days demonstrated complete protection against lethal SFTSV infection, prevented weight loss, and even a 2 day treatment significantly reduced both viral RNA copies and infectious virus titers in multiple organs, and notably alleviated splenic tissue lesions.

View Article and Find Full Text PDF

Calmodulin-like proteins (CMLs) are essential for calcium signal transduction in plants, influencing growth, development, stress responses, and the regulation of medicinal secondary metabolites. Despite their importance, the roles of genes in have not been characterized. This study aimed to elucidate the composition and function of the gene family in , identifying 38 genes across eight subfamilies.

View Article and Find Full Text PDF

Militarine is a monomer molecule with abundant and distinctive biological properties, also the lead member of secondary metabolites in Bletilla striata, while its biosynthesis mechanism is still unknown. To improve the production efficiency of militarine, sodium acetate and salicylic acid (SA) were introduced as elicitors into the suspension-cultured callus of B. striata.

View Article and Find Full Text PDF

Crop plant microbiomes are increasingly seen as important in plant nutrition and health, and a key to maintaining food productivity. Currently, little is known of the temporal changes that occur in the wheat rhizosphere microbiome as the plant develops, and how this varies among different sites. We used a pot-based mesocosm experiment with the same modern wheat cultivar grown in eight soils from across the North China Plain, a major wheat producing area.

View Article and Find Full Text PDF

β-glucosidases (BGLUs) are abundant enzymes in plants that play pivotal roles in cell wall modification, hormone signal transduction, secondary metabolism, defense against herbivores, and volatile compound release. , a perennial herb revered for its therapeutic properties, lacks a comprehensive analysis of its gene family despite the critical role these genes play in plant secondary metabolism. This study aims to perform a genome-wide analysis of the gene family in () to elucidate their functions and regulatory mechanisms in secondary metabolite biosynthesis.

View Article and Find Full Text PDF

Responsive photonic crystals (RPCs) presenting tunable structural colors under external stimuli are widely applied in the fields of dynamic displays, sensors, and anticounterfeiting. However, the development of multiresponsive photonic crystal (MRPC) films possessing versatile variable optical properties remains a significant challenge due to the tedious synthetic procedure of multifunctional building blocks and complex assembly processes, thereby constraining their extensive applications. In the present work, a series of soft nanospheres with a hydrophobic cores and responsive hydrophilic shells have been synthesized by a facile one-step surfactant-free emulsion polymerization method.

View Article and Find Full Text PDF

Drug development remains a critical focus within the global pharmaceutical industry. To date, more than 80 % of disease targets are considered difficult to target. The emergence of PROTAC technology has, to some extent, alleviated this challenge.

View Article and Find Full Text PDF

Narrow bandwidths are a general bottleneck for applications relying on passive, linear, subwavelength resonators. In the past decades, several efforts have been devoted to overcoming this challenge, broadening the bandwidth of small resonators by the means of analog non-Foster matching networks for radiators, antennas and metamaterials. However, most non-Foster approaches present challenges in terms of tunability, stability and power limitations.

View Article and Find Full Text PDF

Idiopathic pulmonary fibrosis (IPF) is a lethal progressive fibrotic lung disease. The development of IPF involves different molecular and cellular processes, and recent studies indicate that lactate plays a significant role in promoting the progression of the disease. Nevertheless, the mechanism by which lactate metabolism is regulated and the downstream effects remain unclear.

View Article and Find Full Text PDF

We report a case of ST segment elevation in left precordial leads with a convex shape caused by a rare etiology. By carefully analyzing the electrocardiogram (leads I, II, V3 to V9) of a patient with convex ST segment elevation in the left-sided chest leads, relevant etiological clues were derived. The findings were further supported by cardiac ultrasound and cardiac magnetic resonance imaging, ruling out other common causes.

View Article and Find Full Text PDF

Liver disease is a common and serious threat to human health. The progression of liver diseases is influenced by many physiologic processes, including oxidative stress, inflammation, bile acid metabolism, and autophagy. Various factors lead to the dysfunction of these processes and basing on the different pathogeny, pathology, clinical manifestation, and pathogenesis, liver diseases are grouped into different categories.

View Article and Find Full Text PDF

Plant secondary metabolites are important raw materials for the pharmaceutical industry, and their biosynthetic processes are subject to diverse and precise regulation by miRNA. The identification of miRNA molecules in medicinal plants and exploration of their mechanisms not only contribute to a deeper understanding of the molecular genetic mechanisms of plant growth, development and resistance to stress, but also provide a theoretical basis for elucidating the pharmacological effects of authentic medicinal materials and constructing bioreactors for the synthesis of medicinal secondary metabolite components. This paper summarizes the research reports on the discovery of miRNA in medicinal plants and their regulatory mechanisms on the synthesis of secondary metabolites by searching the relevant literature in public databases.

View Article and Find Full Text PDF
Article Synopsis
  • Marine-derived bisindoles show structural diversity and have proven effective against cancer through various mechanisms.
  • Research indicates that drugs from marine sources have a much higher success rate in development compared to other natural products, with 20 currently used in clinical settings.
  • Notable examples include enzastaurin and midostaurin, which are already employed in treating cancers, highlighting the potential of marine bisindoles in overcoming tumor resistance and aiding in the development of new cancer treatments.
View Article and Find Full Text PDF

Tuber plants are of great significance in the world as human food crops. Polysaccharides, important metabolites in tuber plants, also serve as a source of innovative drugs with significant pharmacological effects. These drugs are particularly known for their immunomodulation and antitumor properties.

View Article and Find Full Text PDF
Article Synopsis
  • Militarine is a significant secondary metabolite found in various medicinal orchids, acting as both a plant growth inhibitor and a quality marker for medicinal materials.
  • It has strong medicinal potential for treating a variety of diseases, such as lung injuries, cognitive impairments, and tumors, and is being explored as a natural source for drug development.
  • The study reviews Militarine's properties, biosynthesis, and regulatory mechanisms, focusing on optimizing its production and applications in medicine through advanced research techniques.
View Article and Find Full Text PDF

Multicentric Castleman disease (MCD) is a heterogeneous, life-threatening disease. A subgroup of HIV-negative and HHV-8-negative MCD is defined as idiopathic MCD (iMCD) with a poor prognosis. Here we report an unusual case of a 47-year-old male patient with iMCD who experienced multiple treatment regimens such as chemotherapy, immunomodulatory therapy, and targeted therapy, all of which were considered ineffective.

View Article and Find Full Text PDF
Article Synopsis
  • * Researchers created a recombinant SFTSV with a nanoluciferase gene to test antiviral efficacy in both lab and animal models, identifying the nucleoside analog 4-FlU as an effective inhibitor of the virus.
  • * The study's findings suggest that 4-FlU is a promising candidate for future SFTSV treatments and could help develop antiviral strategies for other similar viruses.
View Article and Find Full Text PDF