Publications by authors named "Zheqi Liu"

Hydrogels are widely used in biomedicine because of their excellent biocompatibility, physicochemical properties, three-dimensional cross-linked polymer networks capable of absorbing and retaining a large amount of water, and various excellent properties that can be endowed to hydrogels through modification and material integration. This review focuses on the polymer compositions and applications of natural/synthetic hybrid hydrogels. Firstly, the physical and chemical crosslinking mechanisms of hybrid hydrogels with different natural/synthetic polymer combinations were discussed in depth.

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Background: Brachial plexu root avulsion (BPRA) commonly causes extensive motoneuron death, motor axon degeneration and denervation of biceps, leading to devastating motor dysfunction in the upper limb. Edaravone (Eda) has been proven to exert anti-oxidative and neuroprotective effects on various neurological disorders. Herein, we aimed to investigate the efficacy profile and potential mechanisms of Eda on BPRA in vitro and in vivo models.

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Article Synopsis
  • The study aimed to explore the cellular and immunological features of the rhabdomyosarcoma (RMS) microenvironment using single-cell transcriptomics and various analytical methods.
  • Results indicated a significantly lower presence of neutrophils in RMS samples, while increased M2-like macrophages were associated with higher Schwann cell infiltration, revealing specific cellular interactions.
  • The findings highlight the unique characteristics of the RMS microenvironment, paving the way for potential research advancements and therapeutic developments.
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Background: Breast cancer is the most common malignancy among women worldwide, characterized by complex molecular and cellular heterogeneity. Despite advances in diagnosis and treatment, there is an urgent need to identify reliable biomarkers and therapeutic targets to improve early detection and personalized therapy. The OAS (2'-5'-oligoadenylate synthetase) family genes, known for their roles in antiviral immunity, have emerged as potential regulators in cancer biology.

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Background: Alzheimer's disease (AD) is a prevalent neurodegenerative disorder affecting the central nervous system (CNS), with its etiology still shrouded in uncertainty. The interplay of extracellular amyloid-β (Aβ) deposition, intracellular neurofibrillary tangles (NFTs) composed of tau protein, cholinergic neuronal impairment, and other pathogenic factors is implicated in the progression of AD.

Objective: The current study endeavors to delineate the proteomic landscape alterations in the hippocampus of an AD murine model, utilizing proteomic analysis to identify key physiological and pathological shifts induced by the disease.

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The inhibitory effect of chronic psychological stress on reproductive behavior is widely recognized since long. However, the biological mechanisms underlying these effects, especially the cellular biology of the testicular cells, have not been fully investigated. This study aimed to investigate the effects of chronic psychological stress on rat reproductive behavior and its correlation with testicular cell damage and oxidative stress.

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Objective: To investigate the mechanisms behind acquired resistance to erlotinib in head and neck squamous cell carcinoma (HNSCC) with a focus on the role of cancer-associated fibroblasts (CAFs) and the PI3K/AKT signaling pathway.

Materials And Methods: This study analyzed gene expression profiles of erlotinib-sensitive and -resistant HNSCC cell lines using datasets from the Gene Expression Omnibus (GEO) and The Cancer Genome Atlas (TCGA) databases. It included microarray and RNA-sequencing data, differentially expressed genes (DEGs) analysis, and pathway enrichment.

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Tumor progression is closely related to tumor tissue metabolism and reshaping of the microenvironment. Oral squamous cell carcinoma (OSCC), a representative hypoxic tumor, has a heterogeneous internal metabolic environment. To clarify the relationship between different metabolic regions and the tumor immune microenvironment (TME) in OSCC, Single cell (SC) and spatial transcriptomics (ST) sequencing of OSCC tissues were performed.

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Background: Prostate cancer (PCA) is the fifth leading cause of cancer-related deaths worldwide, with limited treatment options in the advanced stages. The immunosuppressive tumor microenvironment (TME) of PCA results in lower sensitivity to immunotherapy. Although molecular subtyping is expected to offer important clues for precision treatment of PCA, there is currently a shortage of dependable and effective molecular typing methods available for clinical practice.

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Article Synopsis
  • - This paper discusses the development of a V-cavity tunable semiconductor laser operating at 1550 nm, designed for use in wavelength division multiplexing (WDM) optical fiber communications.
  • - The experiment successfully demonstrated a 20 km optical link transmitting data at 40 Gbps, showing a good eye diagram and a low bit error rate (BER).
  • - Results indicate that the laser can tune across a 25 nm range, support 32 channels at 100 GHz intervals, and maintain a side mode suppression ratio (SMSR) above 39 dB, confirming its potential for advanced optical networking applications.
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Biomaterials can modulate the local immune and repair-supportive microenvironments to promote peripheral nerve regeneration. Inorganic bioceramics have been widely used for regulating tissue regeneration and local immune response. However, little is known on whether inorganic bioceramics can have potential for enhancing peripheral nerve regeneration and what are the mechanisms underlying their actions.

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Osteosarcoma (OS) is the most common malignant bone tumor. However, treatment strategies have not changed over the past 30 years. The relationship between OS and the immune microenvironment may provide a basis for the establishment of novel therapeutic targets.

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Tumour cells under hypoxia tend to modulate the number and contents of extracellular vesicles (EVs) to regulate the tumour microenvironment (TME) and thus promote tumour progression. However, the mechanism of how hypoxia influences the secretion of EVs remains to be elucidated. Here, we confirm the increased production of EVs in head and neck squamous cell carcinoma (HNSCC) cells under hypoxia, where endosome-derived EVs are the main subtype affected by insufficient O .

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Background: Head and neck dermatofibrosarcoma protuberans (HNDFSP) is extremely rare and not entirely understood.

Objective: To investigate the clinicopathological features of HNDFSP and identify the expression of its clinically relevant indicators, with the expectation of improving the existing treatment strategies.

Methods: A long-term follow-up of patients with HNDFSP who received treatment between 2000 and 2021 at Shanghai Ninth People's Hospital was conducted.

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Although nutrient-starvation therapies can elicit strong anti-tumor effects in multiple carcinomas, it has been convincingly demonstrated that cancer cells exploit the tumor microenvironment to thrive in nutrient-poor environments. Here, we reveal that cancer cells can co-opt nociceptive nerves to thrive in nutrient-poor environments. Initially examining the low-glucose environment of oral mucosa carcinomas, we discovered that cancer cells employ ROS-triggered activation of c-Jun to secrete nerve growth factor (NGF), which conditions nociceptive nerves for calcitonin gene-related peptide (CGRP) production.

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Head and neck squamous cell carcinoma (HNSCC) is among the most prevalent cancer worldwide, with the most severe impact on quality of life of patients. Despite the development of multimodal therapeutic approaches, the clinical outcomes of HNSCC are still unsatisfactory, mainly caused by relatively low responsiveness to treatment and severe drug resistance. Metabolic reprogramming is currently considered to play a pivotal role in anticancer therapeutic resistance.

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The role of autophagy in cancer remains elusive, and nontargeted autophagy inhibitors have limited therapeutic effects in HNSCC. Here, we systematically analyzed the correlation of autophagy-related genes in HNSCC through TCGA and single-cell sequencing data (GSE103322). and were found to have noncanonical autophagy-independent functions in HNSCC.

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Head and neck squamous cell carcinoma (HNSCC) is considered an immunosuppressive malignancy. Cross-talk between cancer cells and immune cells is modulated in part by CC ligand (CCL) chemokines, having a major effect on tumor progression. However, the predictive value and function of CCL family members in HNSCC have not been elucidated.

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Differential expression (DE) gene detection in single-cell ribonucleic acid (RNA)-sequencing (scRNA-seq) data is a key step to understand the biological question investigated. Filtering genes is suggested to improve the performance of DE methods, but the influence of filtering genes has not been demonstrated. Furthermore, the optimal methods for different scRNA-seq datasets are divergent, and different datasets should benefit from data-specific DE gene detection strategies.

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We demonstrate the data transmission characteristics of a 1.96 µm laser in an indoor simulated smoke channel. An active mode-locked thulium-doped fiber laser at 1961.

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Background: Chromobox protein homolog (CBX) family members play important roles in the progression and prognosis of many cancers. However, their functional role in head and neck squamous cell carcinoma (HNSCC) remains largely unknown.

Methods: In this study, we analyzed the expression and functions of CBX family members using The Cancer Genome Atlas data.

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All-optical wavelength conversion technology based on two-dimensional (2D) materials has lately received keen interest. As a new 2D material, borophene displays acceptable photoelectric properties. We demonstrate the all-optical wavelength conversion through four-wave mixing (FWM) in borophene-microfiber hybrid waveguides.

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Background: Inflammatory myofibroblastic tumors in the head and neck (HNIMTs) sometimes show aggressive clinical features and can be diagnosed as HNIMT with malignant transformation.

Methods: The clinicopathological features of 45 HNIMTs with or without malignant transformation were retrospectively investigated. Logistic regression and receiver operating characteristic analysis were used to establish the predictive model.

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Objective: Although perineural invasion (PNI) is well-known to be correlated with and able to predict lymph node metastasis (LNM) in oral squamous cell carcinoma (OSCC), the clinical and molecular correlation between PNI and LNM has not been elucidated, and preoperative biomarkers for LNM prediction in OSCC are urgently needed.

Materials And Methods: The correlation between PNI and LNM was retrospectively evaluated using a cohort of 218 patients diagnosed with OSCC. Candidate neuropeptides were screened based on TCGA database and verified via immunohistochemistry and Western blot analyses.

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Objective: Tongue and mouth floor squamous cell carcinoma (T/MF SCC) exhibits a high rate of local recurrence and cervical lymph node metastasis. The effect of the tumor microenvironment on T/MF SCC remains unclear.

Materials And Methods: Transcriptome and somatic mutation data of patients with T/MF SCC were obtained from HNSC projects of the Cancer Genome Atlas.

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