Publications by authors named "Dawei Yan"

Nitrogen availability remains a principal constraint to crop productivity. Plants cannot directly assimilate the abundant nitrogen available in our atmosphere; instead, they rely on the uptake of inorganic forms of nitrogen, such as ammonium and nitrate from the soil. Nitrogen is a limiting nutrient in wheat production, and wheat yields are very responsive to nitrogen fertilisation.

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Background: Rheumatoid arthritis (RA) is a chronic autoimmune condition characterized by persistent inflammation of the joint's synovial membrane. This inflammation leads to the degradation of joint cartilage and bone, resulting in joint dysfunction and deformity. Early symptoms of RA are often subtle, complicating timely diagnosis.

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This study investigated the metabolite dynamic changes and transformation pathways in Diqing Tibetan pig (DTP) hams during fermentation (0, 30, 90, 180, 360, 540 d) by widely targeted metabolomics. A total of 873 metabolites in 17 subclasses were detected, with significant changes in 448 metabolites. Additionally, 65 key metabolites were found to be involved in the top 10 pathways, with the top pathways for metabolite markers in mature hams including protein metabolism (2-oxocarboxylic acid metabolism, tryptophan metabolism and amino acid biosynthesis) and lipid metabolism (unsaturated fatty acid biosynthesis and linoleic acid metabolism).

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Introduction: Pancreatic cancer (PC) is a highly aggressive malignancy with limited treatment options and poor prognosis. Dahuang Zhechong Pill, a traditional Chinese medicine, has shown promise in inhibiting inflammation. This study investigates the effects of combining Dahuang Zhechong Pill with TNS4 silencing on PC, focusing on their combined role in suppressing PC progression and exploring potential therapeutic applications.

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Background: Tibetan pigs, which have long inhabited the Qinghai-Tibet Plateau at elevations exceeding 3000 m, serve as an ideal model for studying adaptation to extreme high-altitude environments. The multifunctionality of the liver (hematopoiesis, metabolism, detoxification) plays a crucial role in the adaptation of Tibetan pigs to hypoxic and cold environments, yet the specific mechanisms remain unclear.

Results: This study employed single-nucleus RNA sequencing to profile and conduct bioinformatic analyses on the liver tissues of Diqing Tibetan pigs across 5 developmental stages (embryonic day 25, embryonic day 55, day of birth, development to 30 days, and development to 90 days).

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A duck adenovirus type 3 strain, SD2019, was isolated from sick Muscovy ducks in our laboratory in 2019. To study the biological properties of the virus, an infectious clone of the SD2019 strain was successfully established. The plasmid containing the whole genome of DAdV-3 was digested with I and the linearized DNAs were electortransfected into LMH cells; the cells showed cytopathic effects (CPEs) at 96 h post transfection and the rescued virus (rSD2019) was identified by PCR and indirect immunofluorescence assays (IFAs).

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Introduction: Interactions between fibroblast-like synoviocytes (FLSs) and macrophages are pivotal in the pathogenesis of rheumatoid arthritis (RA). Exosomal circular RNAs (circRNAs) are key players in the communication between RA-FLSs and macrophages, yet their specific roles in RA pathogenesis remain undefined.This study aims to investigate the specific regulatory mechanisms of exosomal circRNAs in RA and their function in macrophage polarization through in vitro experiments.

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Rheumatoid arthritis (RA) is an autoimmune disease characterized by synovitis. It has a high prevalence worldwide, significantly impacting patients ' quality of life. There are still numerous obstacles and problems in the treatment of this disease.

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Tembusu virus (TMUV) is an emerging mosquito-borne flavivirus, primarily transmitted by spp. mosquitoes. The 2010 outbreak of TMUV in ducks revealed that the virus had acquired direct contact and aerosol transmission routes, enabling its rapid spread in duck farms.

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Arecoline, a biologically active alkaloid extracted from the areca nut, serves as the primary psychoactive ingredient in betel quid, one of the most widely consumed psychoactive substances worldwide. Despite its extensive use, the central nervous system (CNS) effects of arecoline remain inadequately understood. This study aims to investigate the central actions of arecoline through a comprehensive, multi-dimensional approach that integrates behavioral assays, neuroimaging techniques, calcium signaling analysis, and transcriptomic profiling.

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Duck egg-reducing syndrome virus (DERSV) is a novel Avihepatovirus and is responsible for a gradual decline in the laying rate of ducks, decreasing from a peak of 90% to 50%. The development of a rapid detection method for DERSV is crucial for the identification and control of virus infections. In this study, we developed a quantitative reverse transcription PCR (RT-qPCR) assay for detecting DERSV.

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Water uptake by roots is essential for plant growth and stress acclimation. We previously showed that the XYLEM NAC DOMAIN 1 (XND1) transcription factor negatively regulates root hydraulic conductivity (Lpr) in Arabidopsis (Arabidopsis thaliana). Here, we show that XND1 physically interacts with the transcription factor DNA-binding with One Finger 4.

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ETS-1, a key member of the Erythroblast Transformation-Specific (ETS) transcription factor family, plays an important role in cell biology and medical research due to its wide expression profile and strong transcriptional regulation ability. It regulates fundamental biological processes, including cell proliferation, differentiation, and apoptosis, and is involved in tumorigenesis and metastasis, promoting malignant behaviors such as angiogenesis, matrix degradation, and cell migration. Given the association between ETS-1 overexpression and the aggressive characteristics of multiple malignancies, it represents a promising therapeutic target in cancer treatment.

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Introduction: Friend Leukemia Integration 1 Transcription Factor (FLI1) has attracted attention due to its involvement in rheumatoid arthritis (RA). Nevertheless, the precise mechanism through which FLI1 contributes to RA remains elusive. We investigated the potential role of FLI1 in RA through integrated bioinformatics, clinical experiments, and cellular experiments.

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Pigs serve as a mixing vessel for influenza viruses and can independently promote the emergence of pandemic strains in humans. During our surveillance of pig populations from 2021 to 2023 in China, 11 H1 subtype swine influenza viruses (SIVs) were isolated. All viruses were reassortants, possessing internal genes of identical origins (PB2, PB1, PA, NP, M: pdm09/H1N1 origin, NS: North American triple reassortant origin).

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Background: Maternal-derived antibody (MDA) interferes with immune responses, leading to the failure of H9N2 avian influenza vaccinations in poultry. So far, none of the commercially available H9N2 avian influenza vaccines used in poultry have been able to overcome MDA interference.

Methods: To develop a vaccine that can overcome MDA interference, one or multiple copies of the minimum-binding domain (P29) from the complement protein C3d were inserted in between the signal peptide and the head domain of the hemagglutinin (HA) protein on a H9N2 avian influenza virus (A/Chicken/Shanghai/H514/2017, named H514).

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Rapid and sensitive detection of dopamine (DA) remains a great challenge in biosensing and disease diagnosis. In this work, we proposed a locking reduction series strategy for designing an electrochemical DA sensor. First, an oxygen vacancy-enriched zeolite imidazole framework-8 (ZIF-8) was prepared by facile solvothermal methods, and then Au nanoparticles (Au NPs) were encapsulated within the ZIF-8 (Au@ZIF-8) to obtain an efficient electrochemical DA sensor.

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During the life cycle of the influenza virus, viral RNPs (vRNPs) are transported to the nucleus for replication. Given that a large number of progeny viral RNA occupies the nucleus, whether there is any host protein located in the nucleus that recognizes the viral RNA and inhibits the viral replication remains largely unknown. In this study, to explore the role of hnRNPH1 in influenza virus infection, we knocked down and over-expressed the hnRNPH1 proteins in 293T cells, then infected the cells with the influenza virus.

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Plants need to adapt to fluctuating atmospheric humidity and respond to both high and low humidity. Despite our substantial understanding of plant responses to low humidity, molecular mechanisms underlying the high humidity (HH) response are much less well understood. In this study, we investigated early responses to HH in .

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Adipose tissue, an important organ involved in energy metabolism and endocrine, is closely related to animal meat quality and human health. Transient receptor potential channel 1 (TRPC1), an ion transporter, is adipocytes' major Ca entry channel. However, its function in fat deposition is poorly understood, particularly in pigs, which are both an ideal model for human obesity research and a primary meat source for human diets.

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This study aimed to explore the flavor formation mechanism of Diqing Tibetan pig hams by investigating changes of their physicochemical and volatile flavor compounds during fermentation (0, 30, 90, 180, 360, and 540d) using amino acid analyzer , texture profile analysis, and gas chromatography-ion mobility spectroscopy (GC-IMS). During fermentation, the hams significantly decreased in moisture and centrifugal loss, while increased in chewiness, hardness, and proteolysis index, with their free amino acids content reaching the maximum at 360d and significantly decreasing at 540d. GC-IMS identified 78 volatile organic compounds, with the highest total content of alcohols and aldehydes at 180d, ketones and heterocycles at 360d, and esters at 540d.

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Comparison of the excitability of four different alkaloids/salts, including nicotine, nicotinic benzoate, caffeine and arecoline hydrobromide. Based on positron emission tomography (PET) imaging and F-Fallypride, a novel technique for measuring alkaloid/salt excitability in SD rats was developed. Different doses and types of alkaloids/salts were administered to the SD rats in a single nebulised inhalation.

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As one of the largest tissues in the animal body, skeletal muscle plays a pivotal role in the production and quality of pork. Consequently, it is of paramount importance to investigate the growth and developmental processes of skeletal muscle. Lijiang pigs, which naturally have two subtypes, fast-growing and slow-growing, provide an ideal model for such studies by eliminating breed-related influences.

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Ethnopharmacological Relevance: Diabetic peripheral neuropathy (DPN) is a common complication of diabetes mellitus, mainly manifested as paresthesia. Tangzu granule (TZG) is derived from famous traditional Chinese medicine decoctions and optimized by long-term temporary practice. TZG has good efficacy in improving numbness, pain and pruritus of the lower extremities of DPN patients.

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Exosomes are small membrane vesicles that are released by cells into the extracellular environment. Tumor-associated exosomes (TAEs) are extracellular vesicles that play a significant role in cancer progression by mediating intercellular communication and contributing to various hallmarks of cancer. These vesicles carry a cargo of proteins, lipids, nucleic acids, and other biomolecules that can be transferred to recipient cells, modifying their behavior and promoting tumor growth, angiogenesis, immune modulation, and drug resistance.

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