ABSTRACT
BACKGROUND: The mannose receptor is an immune adhesion molecule mainly expressed on the surface of antigen-presenting cells such as nonmature dendritic cells and macrophages. This study aimed to investigate mannose receptor expression and its predictive role in papillary gastric cancer patients. METHODS: The expression of the mannose receptor was measured in 120 samples of gastric cancer tissues and corresponding paracarcinoma tissues, by immunohistochemical and quantitative real-time PCR analysis. The relationships between mannose receptor expression and clinicopathological features of gastric cancer patients were analyzed. RESULTS: The expression rate of the mannose receptor in gastric cancer cells was 45.8% (54/120), significantly higher than that in the paracarcinoma tissue (20.0%, 36/120) (χ2 = 6.286, p = 0.012). High expression of the mannose receptor was closely related to tumor size, T stage, N stage and Union for International Cancer Control (UICC) stage of gastric cancer (p<0.05). A Kaplan-Meier survival model indicated that the survival of patients in the high-expression mannose receptor group was significantly shorter than in the low-expression mannose receptor group (p<0.05). Cox regression analysis showed that high mannose receptor expression was an independent predictor for the prognosis of patients with gastric cancer. CONCLUSIONS: High mannose receptor expression indicates poor prognosis for gastric cancer patients. The mannose receptor may be an important molecular marker for gastric cancer prognosis.
Subject(s)
Biomarkers, Tumor/metabolism , Lectins, C-Type/metabolism , Mannose-Binding Lectins/metabolism , Receptors, Cell Surface/metabolism , Stomach Neoplasms/metabolism , Adult , Aged , Female , Humans , Male , Mannose Receptor , Middle Aged , Pilot Projects , Prognosis , Stomach Neoplasms/diagnosis , Stomach Neoplasms/pathologyABSTRACT
BACKGROUND Colorectal cancer (CRC) mainly refers to colon and rectum cancer, which is the most common gastrointestinal malignant tumor. MicroRNAs (miRNAs) in tumors participate in multiple processes of malignancy development, including cell differentiation, proliferation, invasion, and metastasis. In this study we explored the relationship of miR-1260b abnormal expression with clinical pathological features in CRC patients. MATERIAL AND METHODS The expression of miR-1260b was detected by real-time quantitative polymerase chain reaction (real-time PCR) in 120 cases of CRC tissues. The correlation of miR-1260b expression with the clinicopathologic features of CRC was analyzed by SPSS 21.0 statistical software. The Kaplan-Meier method was used for survival analysis. Cox regression analyses were conducted to determine whether miR-1260b was an independent predictor of survival for CRC patients. RESULTS The miR-1260b expression in CRC was significantly higher than the expression levels in the corresponding para-carcinoma tissues (P<0.001). According to the expression levels of miR-1260b, 120 cases of CRC patients were classified into either the miR-1260b high expression group or the miR-1260b low expression group. The high expression levels of miR-1260b in CRC patients was associated with lymph node metastasis (P<0.05) and venous invasion (P<0.001). However, the high miR-1260b expression had no significant correlation with other clinical parameters (P>0.05). The high miR-1260b expression patients survived for shorter times than those CRC patients with low miR-1260b expression (P<0.05). Multivariate analysis revealed that high miR-1260b means poor prognosis of patients with CRC. CONCLUSIONS The high expression level of miR-1260b is an independent prognostic biomarker that indicates a worse prognosis for patients with CRC.
Subject(s)
Colorectal Neoplasms/genetics , MicroRNAs/biosynthesis , Adult , Aged , Biomarkers, Tumor/genetics , Biomarkers, Tumor/metabolism , Colorectal Neoplasms/diagnosis , Colorectal Neoplasms/pathology , Female , Humans , Kaplan-Meier Estimate , Lymphatic Metastasis , Male , MicroRNAs/genetics , MicroRNAs/metabolism , Middle Aged , Multivariate Analysis , Prognosis , Real-Time Polymerase Chain Reaction , Survival AnalysisABSTRACT
AIM: To study the effects of {2-[(3-carboxy-1-oxoprogy1)amino]-2-deoxy-D-glucose (COPADG) on cultured human hepatocellular carcinoma cells (HepG2). METHODS: HepG2 cells were cultured in RPMI-1640 medium. Cell proliferation was determined by MTT assay. Apoptosis was determined by fluorescence microscopy, transmission electron microscopy, agarose gel electrophoresis of DNA fragmentation, and flow cytometry. RESULTS: At the concentration ranging between 1-30 micromol/L, COPADG potently inhibited the growth and induced apoptosis of HepG2 cells. CONCLUSION: COPADG could effectively induce apoptosis in human hepatocellular carcinoma cells. More investigations are warranted for the potential use of this compound as a new agent for the non-surgical management of human hepatocellular carcinoma.
