Publications by authors named "Fuan Xie"

Background: Difficulty in achieving complete resection leads to a poor prognosis for retroperitoneal soft tissue sarcoma, hence emphasizing the significance of adjuvant treatment. The benefit of preoperative radiotherapy for retroperitoneal liposarcoma was initially demonstrated by the STRASS trial. However, the impact of intraoperative radiotherapy (IORT) on retroperitoneal liposarcoma remains unexplored.

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  • Liposarcoma is a malignant tumor from fat tissue, with this study focusing on understanding prognosis differences between retroperitoneal liposarcoma (RLPS) and non-retroperitoneal liposarcoma (NRLPS).
  • Researchers used data from the SEER database and advanced statistical methods to compare survival rates and analyze genetic factors and immune microenvironment differences between RLPS and NRLPS patients.
  • The findings revealed that RLPS patients generally have a worse prognosis than NRLPS patients, highlighting the need for these two types to be considered differently in clinical research and treatment strategies.
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  • Retroperitoneal liposarcoma (RLPS), a subtype of soft sarcoma, has limited treatment options and poor outcomes, leading researchers to investigate its metabolic characteristics.
  • The study analyzed the proteomic, metabolomic, and lipidomic profiles of different types of retroperitoneal liposarcoma tissue compared to nearby fat tissue, revealing key metabolic pathways that are either upregulated or downregulated.
  • Additionally, glycolytic and pentose phosphate pathway inhibitors showed promise in enhancing the effectiveness of existing cancer treatments, suggesting new potential therapeutic strategies for RLPS.
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  • HBV (hepatitis B virus) infection poses a significant global health challenge, largely due to the role of cccDNA (covalently closed circular DNA) in chronic infections, prompting research into targeting host factors for potential treatment.
  • The study focused on the JMJD2 protein family, specifically JMJD2D, revealing that its upregulation in infected cells enhances HBV replication by stabilizing the HBx protein and inhibiting its degradation.
  • Results suggest JMJD2D as a potential biomarker and therapeutic target for chronic hepatitis B, with the inhibition of this protein leading to decreased cccDNA transcription and HBV replication.
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Preadipocyte determination expanding the pool of preadipocytes is a vital process in adipocyte hyperplasia, but the molecular mechanisms underlying this process are yet to be elucidated. Herein, SRY-related HMG box transcription factor 4 (SOX4) was identified as a critical target in response to BMP4- and TGFβ-regulated preadipocyte determination. SOX4 deficiency is sufficient to promote preadipocyte determination in mesenchymal stem cells (MSCs) and acquisition of preadipocyte properties in nonadipogenic lineages, while its overexpression impairs the adipogenic capacity of preadipocytes and converts them into nonadipogenic lineages.

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Esophageal squamous cell carcinoma (ESCC) is a predominant cancer type in developing countries such as China, where ESCC accounts for approximately 90% of esophageal malignancies. Lacking effective and targeted therapy contributes to the poor 5-year survival rate. Recent studies showed that about 30% of ESCC cases have high levels of SOX2.

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Unc‑5 Netrin Receptor C (UNC5C) is a netrin‑1 dependence receptor that mediates the induction of apoptosis in the absence of netrin‑1. The present study found that UNC5C is heterogeneously expressed in breast cancer cell lines. By knocking down UNC5C in SK‑BR‑3 and ZR‑75‑30 cells and overexpressing UNC5c in MDA‑MB‑231 cells, it was demonstrated that UNC5C exerts an inhibitory effect on the growth and metastasis of breast cancer cells.

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Background: Neutrophil gelatinase-associated lipocalin (NGAL) is a promising biomarker of early diagnosis and prediction for acute kidney injury (AKI). However, the current program for NGAL detection is not extensively applied in clinics due to the high expense of antibodies. Nucleic acid aptamers are single-strand DNAs or RNAs which could bind to targets with high specificity and affinity, and they have been widely used in the diagnosis and therapy for multiple diseases.

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Objective To obtain the expression vector, which could be used for screening peptide drug against human immunodeficiency virus type 1 (HIV-1) integrase (IN) with bimolecular fluorescence complementation (BiFc). Methods Full-length IN sequence was amplified using high-fidelity PCR with the template pMDL vector, following with the insertion of target sequence into pBiFc-VN173 vector. Moreover, the recombinant vector pBiFc-VN173-IN was further confirmed by double enzyme digestion and sequencing.

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The esophagus is a pivotal organ originating from anterior foregut that links the mouth and stomach. Moreover, its development involves precise regulation of multiple signal molecules and signal transduction pathways. After abnormal regulation of these molecules in the basal cells of the esophagus occurs, multiple diseases, including esophageal atresia with or without tracheoesophageal fistula, Barrett esophagus, gastroesophageal reflux, and eosinophilic esophagitis, will take place as a result.

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Background: High levels of SOX2 protein are correlated with increased dissemination of breast cancer. However, the underlying molecular mechanisms are not fully understood.

Methods: In this study we investigate the role of SOX2 in breast cancer metastasis using multiple in vitro and in vivo assays including cell culture, shRNA-mediated knockdown, wound healing, colony formation, transwell chamber, xenograft and tail vein injection.

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  • The study aimed to create a lentiviral vector for LLGL2 and establish stable KYSE450 and TE-1 cell lines expressing this protein.
  • The research involved amplifying the LLGL2 sequence, inserting it into a vector, and confirming its successful construction through enzyme digestion and sequencing, followed by lentiviral infection of cancer cell lines.
  • Results showed the successful generation of stable cell lines with increased LLGL2 protein expression, verified by Western blotting and fluorescence.
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The neural guidance molecular, Slit2, and its cognate receptor, Robo1, play critical roles in the development of the nervous system, nevertheless, their functions are not limited to this system. Numerous studies have shown decreased Slit2 expression in a wide variety of cancers, highlighting its potential as a tumor suppressor. However, the Slit2/Robo1 signaling axis was reported to induce either suppressive or stimulatory effects on tumor growth and metastasis, depending on cellular context.

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  • Slit proteins act as chemorepellents in nerve cell positioning and also have a complex role in tumor metastasis, with the impact of Slit3 being less understood than Slit2.
  • Studies show that Slit3 is generally low in tumors due to hypermethylation of its promoter, with lung cancers being an exception as Slit3 methylation is less frequent.
  • Silencing Slit3 in lung adenocarcinoma A549 cells leads to increased cell growth, migration, and changes that promote invasion, suggesting Slit3 functions as a tumor suppressor by impacting matrix metalloproteinases (MMPs).
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  • Netrin-1 is a protein that guides neural development and also influences blood vessel formation, but its exact role in vascular development is still debated.
  • In a study comparing two methods to test netrin-1's effects on blood vessel formation, the matrigel assay showed no significant differences between netrin-1 producing melanoma cells and control cells.
  • Conversely, another assay revealed that netrin-1 secreted by these melanoma cells hindered tube formation in endothelial cells when mixed with fibroblasts, suggesting that the matrigel method doesn’t effectively capture the inhibitory effects of netrin-1 on blood vessel growth.
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  • New negative pressure biopsy technology includes an automatic gun and specific puncture needle developed for better biopsy procedures.!
  • In a study, renal biopsies were performed on 1136 cases resulting in a 99.9% success rate, with some cases experiencing gross hematuria.!
  • The biopsy gun is user-friendly, boasts a higher success rate, and has fewer complications compared to traditional methods.!
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