Publications by authors named "De-jun Zhang"

Background: The effectiveness of immune checkpoint therapy highlights the need to understand abnormal programmed cell death protein-1 (PD-1) expression in nasopharyngeal carcinoma (NPC), especially when treatments fail, or resistance develops. Interferon gamma (IFN-γ) signaling is crucial for regulating programmed cell death-ligand 1 (PD-L1) expression. Our study focuses on interferon gamma receptor 2 (IFNGR2), an essential part of the IFN-γ pathway, and its impact on malignant traits in NPC.

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Immunotherapies employing PD-1/PD-L1 immune checkpoint inhibitors (ICIs) are vital for primary liver cancer (PLC), but response rates remain unsatisfying. Accurate differentiation of responders from non-responders to immunotherapy is imperative. Here, single-cell-scaled mass cytometry analysis on sequential peripheral blood mononuclear cells (PBMCs) from ICI-treated PLC patients is conducted, and tissue residence of immune subpopulations is assessed via multiplex immunohistochemistry.

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Cadmium (Cd) pollution has been a significant concern in heavy metal pollution, prompting plants to adopt various strategies to mitigate its damage. While the response of plants to Cd stress and the impact of exogenous melatonin has received considerable attention, there has been limited focus on the responses of closely related species to these factors. Consequently, our investigation aimed to explore the response of three different species of rape to Cd stress and examine the influence of exogenous melatonin in this scenario.

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Article Synopsis
  • The Tibetan Plateau hosts unique saline lakes with unexplored actinobacteria due to harsh conditions limiting research.
  • A total of 255 actinobacterial strains were identified, with some showing antibacterial properties against pathogens, notably two strains linked to DNA damage.
  • Advanced metabolomic and genomic techniques revealed bioactive compounds, including aromatics like cosmomycin, and potential anthracycline derivatives, emphasizing the importance of integrated analysis for discovering microbial bioactive chemicals.
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  • A novel actinobacterium, strain 10Sc9-8, was isolated from Taklamakan desert soil in China and is characterized as Gram-positive, aerobic, rod-shaped, and non-motile.
  • It thrives in a temperature range of 8-37°C, pH levels of 6.0-10.0, and up to 15% NaCl concentration, with optimal conditions at 28-30°C, pH 7.0-8.0, and 0-3% NaCl.
  • Phylogenetic and genomic analyses reveal that strain 10Sc9-8 is a new species within its genus, distinct based on its DNA characteristics and cell wall composition,
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Endolymphatic sac tumor (ELST) is a group of low-grade malignant tumors originating from the endolymphatic sac of the inner ear. It is rare in the clinic and has the biological characteristics of slow growth and local aggression. Due to the lack of specificity in the clinical manifestations of patients with ELST, many cases have entered the advanced stage at the time of diagnosis.

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A better understanding of the mechanisms underlying PD-L1 aberrant expression in head and neck squamous cell carcinoma (HNSCC) will help reveal predictive biomarkers and overcome resistance to treatment. In this study, the prognostic significance of PD-L1 in forty-five HNSCC archival samples was determined by qRT-PCR. The biological function associated with malignant behaviour was assessed by PD-L1 depletion, miR-382-3p re-expression and regulation of circ_0000052.

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Purpose: Cerebellopontine angle meningiomas (CPAMs) are benign tumors that arise from the dura mater of the petrosal surface of the temporal bone, lateral to the trigeminal nerve. This study aimed to describe 1 case of CPAMs violating the mastoid and highlight the unique superiority of the presigmoid transmastoid approach for this type of CPAMs from an otologist's perspective.

Methods: One case of specific CPAMs treated by total resection via presigmoid transmastoid approach in otomicrosurgery was described.

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Hereditary hearing loss is genetically heterogeneous, with diverse clinical manifestations. Here we performed targeted genome sequencing of 227 hearing loss related genes in 1027 patients with bilateral hearing loss and 520 healthy volunteers with normal hearing to comprehensively identify the molecular etiology of hereditary hearing loss in a large cohort from China. We obtained a diagnostic rate of 57.

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, ( L., Caprifoliaceae, Dipsacales) are widely distributed in China while mainly occurrs in northeast China. Few reports have been determined on the genus .

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Bunge is a plant used in traditional Tibetan medicine, with reported anti-inflammatory and antioxidants effects and alleviation of myocardial ischemia reperfusion injury (MIRI). However, the underlying mechanism against MIRI and the phytochemical composition of are vague. One fraction named OFF1 with anti-MIRI activity was obtained from , and the chemical constituents were identified by ultra-high-performance liquid chromatography coupled with tandem mass spectrometry (UHPLC-MS).

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The clinical efficacy of immune checkpoint blockade has been recently demonstrated in a variety of cancer types. The aim of the present study was to characterize the expression profile of tumor-infiltrating lymphocytes (TILs) and programmed death-ligand 1 (PD-L1) in head and neck squamous carcinoma (HNSCC). A total of 63 patients with HNSCC were enrolled in the present study.

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MiR-543 and Numb are associated with various malignancies, including prostate cancer (PCa). However, whether miR-543 regulates Numb in PCa development remains unclear. In this study, we identified Numb as a direct target of miR-543.

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Skull base osteomyelitis that is secondary to otitis media is extremely rare in the modern antibiotic era. The authors present an 84-year-old male with atypical skull base osteomyelitis that developed from otitis media during the COVID-19 pandemic due to delayed diagnosis and partial treatment which is blamed for development of skull base osteomyelitis. The atypical presentations of skull base osteomyelitis pose a diagnostic challenge.

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Background: Laryngeal squamous cell carcinoma (LSCC) is the common cancer with poor prognosis. Long non-coding RNA (lncRNA) ANRIL has been proven to play an important role in many cancers. However up to now, the role of ANRIL in LSCC is still poorly understood.

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There is accumulating evidence indicating that long non-coding RNA H19 and its mature product miR-675 play essential roles for tumor growth and progression. However, their prognostic value in human head and neck squamous cell carcinoma (HNSCC), particular in laryngeal carcinoma, remains to be elucidated. In this study, we observed that both H19 and miR-675 were significantly overexpressed in a cohort of 65 primary tumor samples and two HNSCC cell lines.

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Conclusion: BDET might be effective for the patients with OME, and proved to be an efficacious and mini-invasive treatment for OME.

Objectives: To evaluate the therapeutic benefits of balloon dilation eustachian tuboplasty (BDET) in the treatment of adult patients with otitis media with effusion (OME) caused by eustachian tube dysfunction (ETD).

Methods: After informed consent, eight adult patients with OME were included in this study.

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According to the cancer stem cell theory, a small subpopulation of cancer cells, known as cancer stem cells (CSCs), exist that are self-renewing and are involved in tumor invasion, metastasis and recurrence. A number of studies have reported that certain cancer cells are able to efflux the Hoechst 33342 dye. These cells are termed side population (SP) cells and share characteristic features of CSCs.

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Background: There is increasing evidence demonstrating the role of human trophoblast cell surface antigen 2 (TROP2) in cancer development and progression. However, their prognostic value in Epstein-Barr virus (EBV) associated nasopharyngeal carcinoma (NPC) remains to be elucidated.

Method: The prognostic significances of TROP2 and Ki-67 were determined by immunohistochemistry in 58 NPC samples.

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Purpose: In the present study, we made an attempt to elucidate the role of oversecretion of interleukin-4 (IL-4) in cancer stem cells (CSCs) of head and neck squamous cell carcinoma (HNSCC).

Methods: HNSCC samples were analyzed for the presence of CSCs by flow cytometry. In addition, we have performed drug and apoptosis resistance assays to determine the role of IL-4 in CSCs.

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The presence of cancer stem cells (CSCs) has major implications in the choice of cancer treatment strategy and is responsible for tumor relapse. CSCs have been isolated and characterized in several types of cancer; however, studies concerning the CSCs from nasopharyngeal carcinoma (NPC) are limited. Thus, the present study was designed to isolate and characterize the cancer stem-like side population (SP) cells from NPC samples.

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The present study aimed to identify key genes and relevant microRNAs (miRNAs) involved in laryngeal squamous cell carcinoma (LSCC). The gene expression profiles of LSCC tissue samples were analyzed with various bioinformatics tools. A gene expression data set (GSE51985), including ten laryngeal squamous cell carcinoma (LSCC) tissue samples and ten adjacent non-neoplastic tissue samples, was downloaded from the Gene Expression Omnibus.

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To establish an HPLC method for determining components in monocrotalinum liposomes. The results showed a good linear relationship in monocrotalinum liposomes within the concentration range between 1.6-102.

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Article Synopsis
  • An effective cancer therapy should specifically target tumors while minimizing side effects.
  • Researchers engineered a weakened strain of Salmonella typhimurium to deliver a gene called Apoptin into human cancer cells, showing increased cell death through a specific cellular pathway.
  • Tests in mice demonstrated that this recombinant bacteria slowed tumor growth and improved survival rates, suggesting its promise as a cancer treatment.
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