Publications by authors named "Guo-zhi Chen"

Purpose: Worldwide, chronic hepatitis B virus (CHB) infection is a public health concern, ultimately leading to liver cirrhosis and hepatocellular carcinoma. Currently, patients with CHB can be treated using polyethylene glycol (PEG)ylated interferon (PEG-IFN) antiviral therapy, which has both immune modulatory and antiviral properties. This study aimed to reveal the mechanism underlying the effect of PEG-IFN therapy, to rationally optimize this therapeutic option.

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  • The study aimed to assess the effectiveness of concentrated growth factor (CGF) combined with sodium hyaluronate (SH) on treating temporomandibular joint osteoarthritis (TMJOA) in 60 patients.
  • Patients were split into two groups: one received CGF + SH treatment and the other received SH only, with measurements taken for pain and joint function at various intervals after treatment.
  • Results showed significant improvements in pain relief, joint function, and condylar health in the experimental group compared to the control group, indicating that the CGF + SH combination is beneficial for TMJOA.
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  • This study examines how the bacteria Porphyromonas gingivalis influences the progression of oral squamous cell carcinoma (OSCC) through the formation of neutrophil extracellular traps (NETs) in the tumor environment.
  • Researchers analyzed NETs-related markers in OSCC samples and found that high levels of these markers correlate with more advanced tumor stages and poorer patient outcomes.
  • Findings indicate that P. gingivalis can trigger the release of NETs, which in turn facilitate cancer cell migration and metastasis, suggesting that targeting this process could lead to new treatment strategies for OSCC.
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Head and neck squamous cell carcinoma (HNSCC) is the most common malignancy of the head and neck. However, the molecular mechanisms governing the development of HNSCC have not been fully elucidated. Differentially expressed genes (DEGs) were screened out from The Cancer Genome Atlas (TCGA) and GSE23036 datasets.

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Background: Head and neck squamous cell carcinoma (HNSCC) is the most common malignancy of the head and neck, and the inflammatory microenvironment can impact the prognosis of HNSCC. However, the contribution of inflammation to tumour progression has not been fully elucidated.

Methods: The mRNA expression profiles and corresponding clinical data of HNSCC patients were downloaded from The Cancer Genome Atlas (TCGA) database.

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  • Researchers studied how Porphyromonas gingivalis (P. gingivalis) impacts the progression of oral squamous cell carcinoma (OSCC) in its tumor microenvironment (TME).
  • They used various techniques like gene expression analysis, immunohistochemistry, and animal experiments to understand the molecular mechanisms involved.
  • The study found that P. gingivalis infection leads to increased tumor growth and worse outcomes for patients, primarily through the activation of the CXCL2/CXCR2 signaling pathway and recruitment of certain immune cells.
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The present study aimed to detect the immunoexpression and clinical significance of () in the tumor microenvironment (TME) of oral squamous cell carcinoma (OSCC). The immunoexpression of in OSCC tissues was detected via immunohistochemistry (IHC) after was infected into the TME of OSCC. To identify the differentially expressed genes in the carcinogenesis and progression of OSCC with infection, microarray datasets (GSE87539 and GSE138206) were downloaded from the Gene Expression Omnibus database.

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Purpose: To analyze the general information,clinical symptoms, etiology of infection, and complications of oral and maxillofacial space infection in patients with different ages, in order to provide references for prevention of complications.

Methods: Three hundred and forty-eight patients with oral and maxillofacial space infection treated in the Oncology Department of Oral and Maxillofacial Surgery of the First Affiliated Hospital of Xinjiang Medical University were retrospectively analyzed from March 2007 to Feburary 2017. Statistical analysis was performed with SPSS 20.

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Matrix attachment region (MAR)-binding protein (MARBP) has profound influence on gene transcriptional control by tethering genes to the nuclear scaffold. MARBP SATB2 is recently known as a versatile regulator functioning in the differentiation of multiple cell types including embryonic stem cells, osteoblasts and immunocytes. Roles of SATB2 in erythroid cells and its working mechanism in orchestrating target gene expression are largely unexplored.

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Objective: To study clinical effects of plaster combined with splint for the treatment of Gartland type 1I humeral fractures.

Methods: From March 2002 to May 2006, 24 children with humeral supracondylar fractures of Gartland type ill were reviewed. Among the patients, 14 patients were male and 10 patients were female, ranging in age from 4 to 12 years, averaged 6.

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Background & Aims: miR-122 is the most abundant microRNA in the liver and regulates metabolic pathways including cholesterol biosynthesis, fatty acid synthesis, and oxidation. However, little is known about mechanisms that regulate the expression of miR-122 in the liver. The aim of this study was to identify key transcriptional regulators for miR-122 expression through intensively studying its primary transcript and promoter region.

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Matrix attachment regions (MARs) are important in chromatin organization and gene regulation. Although it is known that there are a number of MAR elements in the beta-globin gene cluster, it is unclear that how these MAR elements are involved in regulating beta-globin genes expression. Here, we report the identification of a new MAR element at the LCR (locus control region) of human beta-globin gene cluster and the detection of the inter-MAR association within the beta-globin gene cluster.

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Targeted gene repair mediated by single-stranded DNA oligonucleotides (SSOs) is a promising method to correct the mutant gene precisely in prokaryotic and eukaryotic systems. We used a HeLa cell line, which was stably integrated with mutant enhanced green fluorescence protein gene (mEGFP) in the genome, to test the efficiency of SSO-mediated gene repair. We found that the mEGFP gene was successfully repaired by specific SSOs, but the efficiency was only approximately 0.

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Chromatin from different regions of the genome frequently forms steady associations that play important roles in regulating gene expression. The widely used chromatin conformation capture (3C) assay allows determination of the in vivo structural organization of an active endogenous locus. However, unpredicted chromatin associations within a given genomic locus can not be identified by 3C.

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The ideal gene-therapy vector for treating genetic disorders should deliver intact therapeutic genes and their essential regulatory elements into the specific "safe genomic site" and realize long-term, self-regulatory expression. For beta-thalassemia gene therapy, viral vectors have been broadly used, but the accompanying insertional mutation and immunogenicity remain problematic. Hence, we aimed to develop new non-viral vectors that are efficient and safe in treating diseases.

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Trials of retroviral vector-mediated human beta-globin gene transfer were hampered by low titers, unstable vector transmission, and low-level expression of transferred gene. With the goal of optimizing the retrovirally encoded human beta-globin gene expression cassette for gene therapy of beta-thalassemia, we generated 3 series of vector constructs (a total of 12 constructs) and investigated the effects of the proximal promoter, 3' - enhancer, and derivatives from the beta-locus control region or alpha-major regulatory element on virus titer, vector transmission stability, and gene expression. The virus titers for 9 of the 12 vector constructs ranged between 2.

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The efficacy of rhIL-11 in treating thrombocytopenia and neutropenia in gamma-irradiated rhesus monkeys and the variation in curative effect due to difference of administration times were studied. Healthy rhesus monkeys were exposed to 3.0 Gy (60)Co total body irradiation (TBI) to result in pancytopenia for three weeks.

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Murine erythroleukemia (MEL) cell line was used as a model to evaluate the potential value of retroviral construct containing human beta-globin express io n cassette in gene therapy of beta-thalassemia and to explore possible mechanisms underlying low expression of retrovirally cloned human beta-globin gene. A recombinant retroviral vector was constructed, which harbored 2.0 kb beta-globin gene w it h a 374 bp deletion in intervening sequence II coupled with a mini locus control region (miniLCR) composed of DNaseI hypersensitive sites (HS) 2 and 3 from human beta-LCR.

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