Publications by authors named "Lei Sun"

The fungal cell wall provides the cell with enough strength to withstand turgor pressure and keeps adequate plasticity to extend the cell wall size under turgor pressure for cell growth. The cell walls of apical growing hyphae and budding growth yeast have been studied in detailed which share common components of chitin and β-1,3-glucan in their scaffold structures while other polysaccharide components vary on species. In contrast, the cell walls of elongating growth mushroom stipe remains poorly studied.

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We present the case of a 67-year-old female who developed simultaneous metastases to the ampulla of Vater and the breast. Her medical history is significant for a radical nephrectomy performed twenty-one years prior for renal cell carcinoma (RCC). The patient was referred for evaluation due to the development of progressive jaundice, fatigue, and weight loss.

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Although smoking is a risk factor for pancreatic adenocarcinoma (PDAC), the underlying mechanism promoting tumorigenesis and progression are unknown. Here, we show that aryl hydrocarbon receptor ligands found in cigarette smoke, like the carcinogen 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD), promote pancreatic dysplasia and PDAC progression in a mouse model of this disease. This effect is mediated by AhR activation in CD4+ T cells, leading to their polarization to interleukin-22 (IL22) producing TH22 cells and to regulatory T cells (Treg) accumulation, ultimately driving a blunted CD8+ T cell effector response.

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One of the most critical steps in the treatment of spent nuclear fuel is the removal of americium (Am) and curium (Cm) ions from radioactive wastewater. The use of new materials with high surface areas, such as graphene, has been considered a promising solution to this issue. Therefore, understanding the mechanism by which Am and Cm ions are adsorbed onto the graphene surface in aqueous solutions is of paramount importance.

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Diabetic Retinopathy (DR) is a leading cause of blindness worldwide, and its early detection and accurate grading play a crucial role in clinical intervention. To address the dual limitations of existing methods in multi-scale lesions feature fusion and lesions relation modeling, this study proposes a novel adaptive multi-scale convolutional neural network model for fine-grained grading of DR, called MAFNet (Multi-scale Adaptive Fine-grained Network). The model is constructed through three core modules to establish a multi-scale feature integration framework: the Hierarchical Global Context Module (HGCM) effectively expands the receptive field by employing multi-scale pooling and dynamic feature fusion, capturing lesions features from micro to large-scale areas; the Multi-scale Adaptive Attention Module (MSAM) utilizes an adaptive attention mechanism to dynamically adjust the feature weights at different spatial locations, enhancing the representation of key lesions regions; and the Relational Multi-head Attention Module (RMA) uses a multi-head attention mechanism to model the complex relationships between features in parallel, improving the accuracy of fine-grained lesions identification.

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In genome-wide association studies (GWAS), it is often desirable to test for interactions, such as gene-environment (G x E) or gene-gene (G x G) interactions, between single-nucleotide polymorphisms (SNPs, G's) and environmental variables (E's). However, directly accounting for interaction is often infeasible, because the interacting variable is latent or the computational burden is too large. For quantitative traits (Y) that are approximately normally distributed, it has been shown that indirect testing on GxE can be done by testing for heteroskedasticity of Y between genotypes.

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To investigate the nutritional status and feeding behaviours of nursing home residents and the impact of cognitive impairments and feeding difficulties on nutritional health. A cross-sectional observational design was employed. The study assessed 51 nursing home residents using the Mini Nutritional Assessment Short-Form (MNA-SF) for nutritional status, the Feeding Difficulty Index (FDI) for mealtime behaviours, and the MoCA (Montreal Cognitive Assessment or The MoCA Test) for cognitive function.

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In this study, a highly cadmium (II)-resistant bacterium strain, C10-4, identified as , was isolated from a sediment sample collected from Baiyangdian Lake, China. The minimum inhibitory concentration (MIC) of Cd(II) for strain C10-4 was 1600 mg/L. Factors such as the contact time, pH, Cd(II) concentration, and biomass dosage affected the adsorption of Cd(II) by strain C10-4.

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The regeneration of the liver involves a process governed by diverse biological routes. The zinc finger protein Zinc Finger MAtrin-3 (ZMAT3) is vital in regulating transcription. This research intends to clarify how ZMAT3 influences liver regeneration and to pinpoint possible novel therapeutic intervention targets.

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For complex human traits, a large portion of genetic heritability remains unaccounted for beyond common genetic variants; therefore, estimating the contribution of rare variants (RVs) to the etiology of complex traits is of interest. Research in this domain has primarily focused on gene-based RV testing methods, in which information from multiple variants is combined to maximize statistical power in detecting genes associated with the trait of interest. However, after discovering an association, estimating individual effects becomes challenging due to sample size limitations.

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Fungal pathogens severely impair the essential physiological and biochemical processes of plants, triggering infections, undermining plant vitality, and ultimately leading to diminished agricultural productivity. To explore new and efficient antifungal agents to deal with the serious destruction of important silvicultural species, a series of new indole derivatives containing the imidazo[2,1-]heterocycle were designed and synthesized, and their antifungal activities against several fungal species, such as , , , , , were evaluated by the mycelial growth rate method. The results showed that the EC of DL-21 reached 4.

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Benzene, a recognized carcinogen, is utilized in synthesizing various chemicals. Epidemiological studies have established a positive correlation between benzene exposure and increased incidences of abnormal menstruation and dysmenorrhea. This exposure might also pose risks to the fetal hematopoietic system.

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Molecular electron spin qubits offer atomic-level tunability and room-temperature quantum coherence. Their integration into engineered solid-state matrices can enhance performance toward ambient quantum information technologies. Herein, we demonstrate covalent organic frameworks (COFs) as programmable matrices for stable organic radical qubits, allowing strategic optimization of spin-phonon and spin-spin interactions.

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Fruit softening and cell wall pectin decomposition are prevalent phenomena in postharvest blueberry fruits. To mitigate blueberry softening and preserve the firmness and nutrient content of blueberries, a 6 mT static magnetic field (SMF) treatment was implemented. The treatment inhibited the content of peroxide (HO) and superoxide anion production rate (O), while enhancing the activity of peroxidase (APX), catalase (CAT), peroxidase (POD), and superoxide dismutase (SOD) antioxidant enzymes and the relative expression of associated genes.

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Background: Patients withEGFR-sensitizing mutations in non-small cell lung cancer (NSCLC) predominantly receive first-line tyrosine kinase inhibitors (TKIs). Subsequent TKI resistance manifests through heterogeneous clinicopathological features, including distinct resistance subtypes (primary vs. acquired),PD-L1expression levels, and molecular profiles from re-biopsies.

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In our previous study, oxazolidinone - demonstrated potent antibacterial activity and drug-likeness but was limited by MAO-A inhibition, high plasma protein binding, and inferior in vivo efficacy compared to linezolid. Herein, we report the discovery of a promising compound , which exhibited excellent antibacterial activity against , MSSA, MRSA, LRSA, and LREFa with MIC values of <0.03, 0.

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Bacterial diversity has been found in indoor stadiums which can be considered as a specific nutrient-deficient environment (NDE), it remains a mystery and opens to new ideas why the bacterial diversity can be formed and maintained in NDE of indoor stadiums, since it is obvious to violate the famous competitive exclusion principle (CEP) in ecology. In the article, five most common genera, Pseudomonas, Acinetobacter, Exiguobacterium, Sphingobacterium, Chryseobacterium in indoor stadiums were selected and periodically sampled to supervise the dynamic characteristics of bacterial community. Based on quorum sensing (QS) and non-monotonic interspecific interaction (NMII) in combination with microbial ecology, clustering analysis and experimental observation, a new hypothesis was put forward to elucidate QS and NMII of substrate location information (SLI) mechanism driving bacterial community succession with high diversity in NDE of indoor stadium.

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We demonstrate what we believe to be a novel design of an imaging spectrometer tailored for extreme ultraviolet (EUV) sources, employing uniformly spaced planar gratings. For what appears to be the first time, our approach adopts a grating-toroid-grating configuration for spectral measurements femtosecond high-harmonic EUV lasers. This spectrometer performs superior in point-to-point imaging modes and the resulting experimental setup is very simple.

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Smart controlled-release nanopesticide systems offer enhanced pesticide efficiency through targeted delivery. In this study, we prepared sulfur-containing square mesoporous silica (S-MSN) carriers, combined them with carboxymethyl chitosan (CCS) to build a dual-responsive pesticide delivery platform (DNF@S-MSN@CCS) for sustained pesticide release. The S-MSN carriers demonstrated a high drug loading capacity of 21.

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Cellular nanodiscs (CNDs), assembled from cell membrane fragments and stabilized with scaffold molecules, have emerged as a promising biomimetic platform for drug delivery, countermeasures, and vaccination. However, the exposure of inner membrane components in the current CND constructs, such as phosphatidylserine (PS) can trigger immune recognition and rapid clearance, thereby limiting their therapeutic efficacy. To address this issue, here we report on a unique approach to dimerizing CNDs in a precisely controlled, back-to-back manner by covalently linking two monomeric CNDs via click chemistry, aiming to shield the immunogenic inner membrane components.

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Severe fever with thrombocytopenia syndrome (SFTS) is an acute infectious disease caused by the SFTS virus (SFTSV). Since the first reported case, SFTSV has spread globally, particularly in Asian regions such as China, South Korea, and Japan, with an increasing number of cases and a high mortality rate among severe patients. SFTSV is an RNA virus capable of rapid biological evolution through genetic mutations, reassortment, and homologous recombination.

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Background And Purpose: The repair response to persistent damage in the liver manifests as liver fibrosis. Leonurine (Leo), an herbal remedy from traditional Chinese medicine, exhibits multiple biological activities such as antioxidant and anti-inflammatory effects. Nevertheless, research exploring Leo's influence on liver fibrosis remains absent.

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Monoterpenoids are vital compounds that impart a distinctive floral flavor. They exist in both glycosidic and free forms in grapes. The breeding of improved monoterpenoid varieties has consistently been a topic of interest, yet only a limited number of molecular markers have been documented.

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Gestational diabetes mellitus (GDM) is an important risk factor for developing congenital heart disease (CHD). It is urgent to find therapeutic drugs that reduce blood glucose and protect patients from CHD. In this study, rat models of type 1 (intraperitoneal injection with 50 mg/kg streptozocin) and type 2 (high fat/high sugar diet for 5 weeks plus 28 mg/kg streptozocin) gestational diabetes were established.

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: Influenza remains a persistent public health challenge due to antigenic drift and shift, necessitating vaccines capable of eliciting broad and durable immunity. Hemagglutinin (HA) antigen serves as the critical target for eliciting protective immune responses against influenza. DNA vaccines offer distinct advantages over conventional platforms, including accelerated development and induction of both humoral and cellular immune responses.

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