Publications by authors named "Chun-Guang Ren"

Objective: To investigate the mechanistic basis for the anti-proliferation and anti-invasion effect of tumor necrosis factor-related apoptosis-induced ligand (TRAIL) and celastrol combination treatment (TCCT) in glioblastoma cells.

Methods: Cell counting kit-8 was used to detect the effects of different concentrations of celastrol (0-16 µmol/L) and TRAIL (0-500 ng/mL) on the cell viability of glioblastoma cells. U87 cells were randomly divided into 4 groups, namely control, TRAIL (TRAIL 100 ng/mL), Cel (celastrol 0.

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Colorectal cancer (CRC) is one of the most prevalent cancers worldwide as well as a significant cause of mortality. The conventional treatment could cause serious side effects and induce drug resistance, recurrence and metastasis of cancers. Hence, specific targeting of cancer cells without affecting the normal tissues is currently an urgent necessity in cancer therapy.

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The first-generation epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors (TKIs), gefitinib and erlotinib significantly improved the therapeutic effect in non-small cell lung cancer (NSCLC) patients with EGFR mutation. However, the EGFR mutation occurs and results in acquired resistance. Consequently, mutant selective third-generation EGFR TKIs represented by AZD9291 (Osimertinib) have been developed to offer more effective therapeutic treatment, but the clinical application is limited by the acquired resistance and the high costs.

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The aim of this study was to assess the effect of preoperative sleep quality on acute postoperative pain in breast cancer patients.The Pittsburgh Sleep Quality Index questionnaire (PSQI) was used to assess the overall sleep status of women scheduled for unilateral modified radical mastectomy in the past month. Based on the responses, patients were allocated to good sleep group or poor sleep group.

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The histone demethylase Jmjd3 plays a critical role in cell lineage specification and differentiation at various stages of development. However, its function during normal myeloid development remains poorly understood. Here, we carried out a systematic in vivo screen of epigenetic factors for their function in hematopoiesis and identified Jmjd3 as a new epigenetic factor that regulates myelopoiesis in zebrafish.

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Background: Chemotherapy has been associated with hyperalgesia. This prospective study was designed to investigate the effect of intraperitoneal chemotherapy with lobaplatin on post-operative pain intensity and sufentanil requirements after laparoscopic transabdominal resection of rectal cancer.

Methods: Eighty subjects (40 subjects treated with intraperitoneal chemotherapy and 40 subjects without chemotherapy treatment) scheduled for laparoscopic transabdominal resection of rectal cancer were included in this study.

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Cancer-induced bone pain can severely compromise the life quality of patients, while tolerance limits the use of opioids in the treatment of cancer pain. Monocyte chemoattractant protein-1 (MCP-1) is known to contribute to neuropathic pain. However, the role of spinal MCP-1 in the development of morphine tolerance in patients with cancer-induced bone pain remains unclear.

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Background: Loss of the tumor suppressor phosphatase and tensin homolog (PTEN) is frequently observed in hematopoietic malignancies. Although PTEN has been implicated in maintaining the quiescence of hematopoietic stem cells (HSCs), its role in hematopoiesis during ontogeny remains largely unexplored.

Methods: The expression of hematopoietic marker genes was analyzed via whole mount in situ hybridization assay in ptena and ptenb double mutant zebrafish.

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Background: The aberrant activation of Ras signaling is associated with human diseases including hematological malignancies and vascular disorders. So far the pathological roles of activated Ras signaling in hematopoiesis and vasculogenesis are largely unknown.

Methods: A conditional Cre/loxP transgenic strategy was used to mediate the specific expression of a constitutively active form of human N-Ras in zebrafish endothelial and hematopoietic cells driven by the zebrafish lmo2 promoter.

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Background: The role of cannabinoid receptor type 2 (Cnr2) in regulating immune function had been widely investigated, but the mechanism is not fully understood.

Results: Cnr2 activation down-regulates 5-lipoxygenase (Alox5) expression by suppressing the JNK/c-Jun activation.

Conclusion: The Cnr2-JNK-Alox5 axis modulates leukocyte inflammatory migration.

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Objective: To investigate the role of brain-derived neurotrophic factor (BDNF) in pain facilitation and spinal mechanisms in the rat model of bone cancer pain.

Methods: The bone cancer pain model was developed by inoculated Walker 256 mammary gland carcinoma cells into the tibia medullary cavity. Sixty SD female rats were divided into 5 groups (n = 12 each) randomly; group I: control group (sham operation); group II: model group; group III: control group + anti-BDNF intrathecal (i.

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Loss of function of tumor suppressor genes, such as PTEN, CEBPAlpha, and CTNNA1 (encoding the alpha-catenin protein), has been found to play an essential role in leukemogenesis. However, whether these genes genetically interact remains largely unknown. Here, we show that PTEN-mammalian target of rapamycin signaling acts upstream to dictate the ratio of wild-type p42 C/EBPalpha to its dominant-negative p30 isoform, which critically determines whether p30 C/EBPalpha (lower p42/p30 ratio) or p42 C/EBPalpha (higher p42/p30 ratio) binds to the proximal promoter of the retained CTNNA1 allele.

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Cre/loxP system is a powerful tool to manipulate the genome. Transgenic animals expressing Cre recombinase in specific tissues or cells have been widely used for conditional gene targeting, lineage tracing, and other genetic analyses. In zebrafish, the transgenic line with stable expression of Cre in specific tissues and cell subtypes has not been generated and its functional activity remains to be defined.

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