Publications by authors named "Chengxuan Yu"

Background And Aims: The relationship between chronic liver disease and liver cancer remains poorly understood, and treatment options for advanced liver disease remain limited. This study aims to elucidate the dynamic evolution of cellular and molecular alterations from normal liver to diseased liver.

Methods: Single-cell RNA sequencing was performed to profile the dynamic cellular variations from normal liver to diseased liver.

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Unlabelled: The gram-positive bacterium (Cm) causes bacterial canker of tomato. The infection process of Cm is of considerable interest, and the role of the alarmone guanosine tetraphosphate or pentaphosphate [(p)ppGpp], a global regulator, has been strongly implicated in bacterial survival and pathogenicity. Transcriptome analysis comparing a (p)ppGpp-deficient strain (Δ) to the wild-type strain demonstrated that (p)ppGpp down-regulates the expression of many genes encoding ribosomal components and ABC transporter proteins, while up-regulating genes associated with amino acid metabolism, biofilm synthesis, and the production and secretion of cell-wall degrading enzymes.

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Liver and peritoneum are the most common metastatic organs in colorectal cancer. However, the mechanisms of metastatic organotropism remain unexplored. Here we used single-cell RNA-sequencing to reveal the intermediate EMT state of tumor cells from colorectal cancer liver metastasis (CRLM) and colorectal cancer peritoneum metastasis (CRPM).

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Fungal phytopathogens employ effector proteins and secondary metabolites to subvert host immunity. Effector proteins have attracted widespread interest in infection, especially for unknown, unreported genes. However, the type of protein remains much less explored.

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Collagen-based biomaterials are gaining prominence in tissue engineering, attributed to their remarkable biocompatibility, inherent biodegradability, and unparalleled capacity to facilitate tissue repair and regeneration. However, the ability to dynamically visualize and quantitatively assess collagen degradation remains a critical challenge, hindering the development of optimized biomaterials for clinical applications. To address this, a novel approach was developed to monitor the injury microenvironment by conjugating second near-infrared quantum dots with solid collagen.

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Background: Augmented repair is an alternative strategy for the treatment of acute ligament and tendon injuries that imparts time-zero biomechanical strength to allow early loading, thereby protecting the repaired structures during the early healing process.

Purpose: To investigate the biomechanical properties and biological healing process after suture repair of acute anterior cruciate ligament (ACL) tears with polyethylene terephthalate (PET) augmentation and compare the findings with those obtained without PET augmentation.

Study Design: Controlled laboratory study.

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Purpose: To use a finite element method to construct a patch-bridge repair model for massive rotator cuff tears (MRCTs) and investigate the effects of different suture methods and knot numbers on postoperative biomechanics.

Methods: A finite element model based on intact glenohumeral joint data was used for a biomechanical study. A full-thickness defect and retraction model of the supraspinatus tendon simulated MRCTs.

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Article Synopsis
  • The study investigates the effectiveness of all-suture anchors (ASA) for repairing rotator cuff tears, focusing on their mechanical properties and integration with tendon and bone post-surgery.
  • Research involved mechanical testing, biocompatibility assessments using rat bone marrow stem cells, and analysis of tissue samples from a rabbit model at 4, 8, and 12 weeks after ASA implantation.
  • Results indicated that ASA offers strong mechanical support, integrates well with tendon-bone interfaces over time, and shows potential for excellent biocompatibility, comparable to natural rotator cuff conditions by 12 weeks.
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Determining the precise course of bacterial infection requires abundant in vivo real-time data. Synchronous monitoring of the bacterial load, temperature, and immune response can satisfy the shortage of real-time in vivo data. Here, we conducted a study in the joint-infected mouse model to synchronously monitor the bacterial load, temperature, and immune response using the second near-infrared (NIR-II) fluorescence imaging, infrared thermography, and immune response analysis for 2 weeks.

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Article Synopsis
  • Artificial grafts are commonly used in treating sports injuries, but their integration with host tissues is hindered by excessive inflammation and limited tissue regeneration.
  • A new multi-layered silk fibroin coating, Cur@Zn@PET, was developed to release curcumin and zinc in a time-controlled manner, targeting both the inflammatory phase and the regeneration phase of healing.
  • In rat studies of ACL reconstruction, Cur@Zn@PET showed promising results, reducing inflammation and fostering new bone growth, suggesting it could enhance the effectiveness of grafts in sports medicine.
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Immune checkpoint inhibitors (ICIs) offer new options for the treatment of patients with solid cancers worldwide. The majority of colorectal cancers (CRC) are proficient in mismatch-repair (pMMR) genes, harboring fewer tumor antigens and are insensitive to ICIs. These tumors are often found to be immune-deserted.

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Current studies on the immune microenvironment of colorectal cancer (CRC) were mostly limited to the tissue level, lacking relevant studies in the peripheral blood, and failed to describe its alterations in the whole process of adenocarcinoma formation, especially of adenoma carcinogenesis. Here, we constructed a large-scale population cohort and used the CyTOF to explore the changes of various immune cell subsets in peripheral blood of CRC. We found monocytes and basophils cells were significantly higher in adenocarcinoma patients.

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Background: Extracorporeal shock wave therapy (ESWT) promotes tissue healing by modulating inflammation, which has implications for meniscal tear healing in the avascular zone.

Purpose: To evaluate the effects of a single dose of radial ESWT on the healing process and inflammation of the meniscus and knee joints after meniscal tears in the avascular zone.

Study Design: Controlled laboratory study.

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Tumor heterogeneity and its drivers impair tumor progression and cancer therapy. Single-cell RNA sequencing is used to investigate the heterogeneity of tumor ecosystems. However, most methods of scRNA-seq amplify the termini of polyadenylated transcripts, making it challenging to perform total RNA analysis and somatic mutation analysis.

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Unlabelled: Pancreatic ductal adenocarcinoma (PDAC) remains a highly lethal malignancy because of its aggressive nature and the paucity of effective treatment options. Almost all registered drugs have proven ineffective in addressing the needs of patients with PDAC. This is the result of a poor understanding of the unique tumor-immune microenvironment (TME) in PDAC.

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This paper studies pattern noise in original equipment fitment through four approaches, including pitch arrangement optimization, pipe resonance experiment, orthogonal experimental design of tread transverse groove, and block shift simulation. An in-cab noise test is conducted to verify the effectiveness. Results show an 8.

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Bacterial fruit blotch (BFB), which is caused by the seed-borne bacterium , is a devastating disease affecting cucurbit crops throughout the world. Although seed fermentation and treatment with disinfectants can provide effective management of BFB, they cannot completely guarantee pathogen-free seedstock, which suggests that is a highly stress-resistant pathogen. Toxin-antitoxin (TA) systems are common among a diverse range of bacteria and have been reported to play a role in bacterial stress response.

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The liver is the most tolerogenic of transplanted organs. However, the mechanisms underlying liver transplant tolerance are not well understood. The comparison between liver transplantation tolerance and heart/kidney transplantation rejection will deepen our understanding of tolerance and rejection in solid organs.

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Tendon and ligament injuries, prevalent requiring surgical intervention, significantly impact joint stability and function. Owing to excellent mechanical properties and biochemical stability, Nondegradable synthetic materials, including polyethylene terephthalate (PET) and polytetrafluoroethylene (PTFE), have demonstrated significant potential in the treatment of tendon and ligament injuries. These above materials offer substantial mechanical support, joint mobility, and tissue healing promotion of the shoulder, knee, and ankle joint.

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Background: Mycoplasma hominis infection is common in urinary tract. F-FDG-PET/CT is a valuable tool for tumor and infection diagnosis. Few studies have shown the F-FDG-PET/CT images after mycoplasma infection.

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Penicillin-binding proteins (PBPs) are considered essential for bacterial peptidoglycan biosynthesis and cell wall assembly. is a representative Gram-positive bacterial species that causes bacterial canker in tomato. plays a significant role in maintaining cell morphological characteristics and stress responses in .

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Background: Xanthomonas campestris pv. campestris (Xcc) is an important seed-borne plant pathogenic bacteria that can cause a serious threat to cruciferous crops. Bacteria can enter into the viable but non-culturable (VBNC) state under stress conditions, and cause potential risks to agricultural production because the VBNC bacterial cells will evade culture-based detection.

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Despite extensive efforts to generate and analyze reference genomes, genetic models to predict gene regulation and cell fate decisions are lacking for most species. Here, we generated whole-body single-cell transcriptomic landscapes of zebrafish, Drosophila and earthworm. We then integrated cell landscapes from eight representative metazoan species to study gene regulation across evolution.

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The tumor microenvironment (TME) is a unique niche governed by constant crosstalk within and across all intratumoral cellular compartments. In particular, intratumoral high potassium (K) has shown immune-suppressive potency on T cells. However, as a pan-cancer characteristic associated with local necrosis, the impact of this ionic disturbance on innate immunity is unknown.

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Individual cells are basic units of life. Despite extensive efforts to characterize the cellular heterogeneity of different organisms, cross-species comparisons of landscape dynamics have not been achieved. Here, we applied single-cell RNA sequencing (scRNA-seq) to map organism-level cell landscapes at multiple life stages for mice, zebrafish and Drosophila.

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