Publications by authors named "Xiang-wei Meng"

Gastric cancer (GC) is one of the most common malignancies, leading to millions of deaths each year. Here, we investigated the molecular mechanisms of GC, with a focus on circXRCC5/miR-655-3p/RREB1/UBA2 axis. circXRCC5 was identified in 62 paired cancer specimens and adjacent normal tissues by genome-wide bioinformatics analysis and verified by qRT-PCR and Sanger sequencing.

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A series of structurally modified curcumol derivatives at C-8 position were designed and synthesized, whose structures were confirmed by H NMR,C NMR, and HRMS analysis. The tested compounds were evaluated for antitumor activity against colorectal cancer cell lines SW620, HCT116, and CaCo2. Many of the tested candidates exhibited higher inhibition efficiency than curcumol.

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A new series of C-14 curcumol derivatives as potent anticancer agents were designed and synthesized by click reaction, whose structures were confirmed by H NMR,C NMR, and HRMS analysis. All the synthesized compounds were evaluated for antitumor activity against colorectal cancer cell lines SW620 and HCT116. Most of them exhibited higher inhibitory activity than curcumol.

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Background: Ankylosing spondylitis refers to a type of autoimmune disease, which is commonly characterized by joint pain and stiffness, since the disease progression can exhibit joint deformity and other activities limited symptoms. Has significantly impacts on people's work and life. Warm acupuncture as a traditional Chinese therapy, showing several advantages (eg, safety, economy, and less side effects), has been extensively used to treat ankylosing spondylitis.

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Aim: To investigate the function and mechanism of ubiquitin-like modifier activating enzyme 2 (Uba2) in progression of gastric cancer (GC) cells.

Methods: Uba2 level in patients with GC was analyzed by Western blotting and immunohistochemistry. MTT and colony formation assays were performed to examine cell proliferation.

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Small ubiquitin‑like modifier proteins are involved in tumorigenesis; however, the potential effects and functions of the family member ubiquitin‑like modifier‑activating enzyme 2 (UBA2) on colorectal cancer are not clear. The present study aimed to examine the effects of UBA2 on the proliferation of colorectal cancer cells in vitro and in vivo. The mRNA and protein expression levels of UBA2 in patients with colorectal cancer were measured by reverse transcription‑quantitative polymerase chain reaction and immunohistochemistry, respectively.

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Background: Matrix metalloproteinase 11 (MMP11) has been shown to play a key role in human tumor progression and indicates poor clinical outcome in cancer patients.

Objective: The current study aimed to evaluate the relationship between serum levels of MMP-11 and prognosis in colon cancer patients.

Methods: Serum levels of MMP-11 were determined in 92 colon cancer patients and 92 healthy individuals using an enzyme-linked immunosorbent assay (ELISA).

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Inflammatory responses play critical roles in carbon monoxide (CO) poisoning-induced cerebral injury. The present study investigated whether erythropoietin (EPO) modulates the toll-like receptor 4 (TLR4) and nuclear factor-kappa B (NF-κB) inflammatory signaling pathways in brain injury after acute CO poisoning. EPO (2500 and 5000 U/kg) was injected subcutaneously twice a day after acute CO poisoning for 2 days.

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The jumping spider genus Epeus Peckham & Peckham presently includes 15 species, mainly from South and Southeast Asia (World Spider Catalog 2015). Species of this genus have the cymbium of male palp flattened and elongated, with a basal apophysis retrolaterally, pointing postero-ventrally; tegulum with a tongue-like process; filiform embolus; and epigyne with long copulatory ducts with several loops.

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Background/aims: Alcohol abuse is becoming an increasingly severe problem among the Han, Mongol and Chaoxian nationalities in the northeast of China. The study aimed to investigate the relationship between alcoholic liver disease (ALD) and the genetic polymorphism of two enzymes, cytochrome P450IIE1 (CYPIIE1) and glutathione S-transferase P1 (GSTP1) in patients of three nationalities.

Methodology: Peripheral blood was collected from 353 Chinese patients with ALD, 300 alcohol-dependent patients without liver disease (alcoholic) and 360 healthy controls.

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To investigate the relationship and significance of Wnt/b-catenin signaling pathway with caspase-3, XIAP, HSP27and Grp-78. The HCC cell line HepG2 was transfected with small interfering RNA (siRNA) directed against b-catenin. After 72 and 96 h, protein was extracted and the protein expressions of b-catenin, caspase-3, XIAP, Grp-78 and HSP27 were detected by Western blot.

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Background/aims: Abnormalities in cell cycle regulation are reported to be strongly associated with tumorigenesis and progression of tumors. Wnt/β-catenin signaling pathway and cell cycle play key roles during the genesis and development of hepatocellular carcinoma (HCC). Current studies indicated that expressions of cyclin A, E and D1 were affected after silencing of β-catenin gene in HCC, but it is unclear if other cyclins are affected.

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Background/aims: To study the correlation and significance of beta-catenin, STAT3 and GSK-3beta signaling pathway in hepatocellular carcinoma (HCC).

Methodology: The HCC cell line HepG2 was transfected with small interfering RNA (siRNA) directed against 8-catenin or STAT3. After 72 and 96h, protein was extracted and the protein expression of beta-catenin, STAT3, and GSK-3beta was detected by Western blot analysis.

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Background/aims: To investigate in patients the relationship between hepatocellular carcinoma and expression levels of cytochrome P450 IIE1 and glutathione S-transferaseP1

Methodology: Peripheral blood was collected from 65 patients with hepatocellular carcinoma, and 65 healthy controls. Real-time polymerase chain reaction was used in this research.

Results: The average mRNA levels of CYPIIE1 in HCC and healthy controls are 11.

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Background/purpose: Bone marrow mononuclear cell (BMMC) transplantation has been shown to facilitate tissue and organ regeneration and repair. BMMC transplantation may be a potential therapy for acute liver failure, and its effect might be further improved. Hepatocyte growth factor (HGF) plays an important role in liver cell development, and may ameliorate hepatic fibrosis or cirrhosis in animal models.

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Objective: To investigate the role and significance of Wnt/beta-catenin signaling pathway regulating GSK-3beta, STAT3, Smad3 and TERT in hepatocellular carcinoma (HCC).

Methods: The HCC cell line HepG2 was transfected with small interfering RNA (siRNA) directed against beta-catenin. Proteins were extracted and the expressions of beta-catenin, GSK-3beta, p-GSK-3beta, STAT3, Smad3 and TERT were detected by Western blot at 72 h and 96 h respectively after transfection.

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The molecular mechanism responsible for hepatocellular carcinoma (HCC) development remains to be defined although a number of gene pathways have been shown to play an active role, such as Wnt/beta-catenin signaling. In this study, beta-catenin small interfering RNA (siRNA) was designed, synthesized, and transfected into HCC HepG2 cells. RT-PCR and western blot assays were performed to detect expression of altered genes and proteins, and the MTT assay was used to detect cell viability.

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Background: Experiments have reported that granulocyte colony stimulating factor (G-CSF) can mobilize stem cells. However, few studies have examined the effect of G-CSF on bone marrow mononuclear cell (BMMC) mobilization, in particular regarding their capability to home to acutely injured liver.

Aims: The aim of this study was to evaluate the effort of G-CSF on BMMC homing to the liver following chemically-induced hepatic failure.

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Aim: To evaluate the number of bone marrow mononuclear cells (BMMC) that are migrated to the liver following transplantation of murine BMMC into mice with acute liver injury.

Methods: BMMC were isolated from the bone marrow of mice in a lymphocyte separation medium and then labeled with PKH26. The labeled cells were subsequently infused into the caudal veins of BALB/c mice with hepatic injury induced by carbon tetrachloride and 2-acetylaminofluorene.

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Background: Alcohol abuse and dependence are major factors in the pathogenesis of alcoholic liver disease (ALD). Alcohol abuse is becoming an increasingly severe problem among the Han, Mongol, and Korean nationalities in northeast China. This study aimed to investigate the relationship between ALD and the genetic polymorphism and expression levels of two enzymes, cytochrome P450IIE1 (CYPIIE1) and glutathione S-transferase P1 (GSTP1) in patients of three nationalities.

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Objective: To study the hepatitis B virus (HBV) genotype and its relation to clinical degree and responsiveness to antiviral therapy on hepatitis in order to guide the clinical therapy.

Methods: We amplified HBV S gene by polymerase chain reaction (PCR), using the second-round PCR product, which was digested by restriction fragment length polymorphism (RFLP). This genotype method was designed under the analysis of the restriction fragment length polymorphism and using the restriction enzymes that identified the genotype-specific sequences.

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Aim: To study the expression of interferon-alpha/beta (IFN-alpha/beta) receptor protein in liver of patients with hepatitis C virus (HCV)-related chronic liver disease and its clinical significance.

Methods: A total of 181 patients with HCV-related chronic liver disease included 56 with HCV-related liver cirrhosis (LC) and 125 with chronic hepatitis C (CHC). CHC patients were treated with five megaunits of interferon-?1b six times weekly for the first 2 weeks and then every other day for 22 wk.

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