To evaluate the differential expression profiles of the lncRNAs, miRNAs, mRNAs and ceRNAs, and their implication in the prognosis in clear cell renal cell carcinoma (CCRCC), the large sample genomics analysis technologies were used in this study. The RNA and miRNA sequencing data of CCRCC were obtained from The Cancer Genome Atlas (TCGA) database, and R software was used for gene expression analysis and survival analysis. Cytoscape software was used to construct the ceRNA network. The results showed that a total of 1 570 lncRNAs, 54 miRNAs, and 17 mRNAs were differentially expressed in CCRCC, and most of their expression levels were up-regulated (false discovery rate < 0.01 and absolute log fold change > 2). The ceRNA regulatory network showed the interaction between 89 differentially expressed lncRNAs and 9 differentially expressed miRNAs. Further survival analysis revealed that 38 lncRNAs (including COL18A1-AS1, TCL6, LINC00475, UCA1, WT1-AS, HOTTIP, PVT1, etc.) and 2 miRNAs (including miR-21 and miR-155) were correlated with the overall survival time of CCRCC (P < 0.05). Together, this study provided us several new evidences for the targeted therapy and prognosis assessment of CCRCC.
The aim of this article is to study the regulatory feedback loop between β-catenin and IQ motif containing GTPase activating protein 1 (IQGAP1), as well as the effect of this regulation loop in colon cancer cell proliferation. Western blot was used to detect the expression of IQGAP1 and β-catenin after changing their expression respectively by transfection in SW1116 cells. CCK-8 cell proliferation assay was used to detect the effect of IQGAP1 involved in the proliferation of SW1116 cells promoted by β-catenin. The results of Western blot indicated that β-catenin could positively regulate IQGAP1, while IQGAP1 silencing could up-regulate β-catenin, forming a negative feedback loop. The results of CCK-8 showed that IQGAP1 silencing inhibited β-catenin-mediated proliferation in SW1116 cells. In conclusion, our research reveals a negative regulatory feedback loop between β-catenin and IQGAP1 which has a remarkable effect on the proliferation ability of colon cancer cells.
【摘要】 目的 探討替吉奧膠囊聯合奧沙利鉑治療晚期胃癌的近期療效和毒性反應。 方法 2010年1-7月，16例晚期胃癌患者根據體表面積來確定初始劑量，體表面積lt;1.25 m2，替吉奧膠囊40 mg/次，2次/d；體表面積1.25~1.5 m2，替吉奧膠囊50 mg/次，2次/d；體表面積gt;1.5 m2，替吉奧膠囊60 mg/次，2次/d，早、晚飯后分別口服1次，連續服用28 d，停藥14 d。奧沙利鉑注射液130 mg/m2加入5%葡萄糖注射液500 mL避光緩慢靜gt;2 h，第1、21天重復，連用2周期。按RECIST 1.1標準評價客觀療效和不良反應。 結果 16例患者中PR 9例（56.3%），SD3例（18.8%），PD 4例（25%），總有效率為69.0%。不良反應主要是血液學毒性、胃腸道反應及外周神經毒性，且均在Ⅰ~Ⅱ。 結論 替吉奧膠囊聯合奧沙利鉑方案治療晚期胃癌的近期療效較好，不良反應可以耐受，值得進一步研究應用。【Abstract】 Objective To explore the early efficacy of Oxaliplatin combined with S1 capsule on advanced gastric cancer and observe the toxicity. Methods A total of 16 patients with advanced gastric cancer from January to July 2010 were treated with chemotherapy: oxaliplatin 130 mg/m2 mixed with 5% glucose injection 500 mL in the first day and repeated in the 21st day; Po after breakfast and dinner: S1 capsule with an initial dose according to the body surface area. Body surface lt;1.25 m2, 40 mg once, twice per day; body surface:1.25-1.5 m2,50 mg once, twice per day; body surface gt;1.5 m2, 60 mg once, twice per day. The medication lasted for 28 days, withdrew for 14 days. All of the patients underwent the treatment for two cycles. Efficacy and toxicities were evaluated according to the RECIST 1.1 standard. Results Of the 16 patients, partial remission (PR) was in nine (56.3%), stable disease was in three (18.8%) (SD), and progression disease was in four (PD). The total response rate was 69.0%. The major toxicities included leucopenia, nausea, vomiting and neurosensory abnormity. Conclusion Oxaliplatin combined with S1 capsule is effective on advanced gastric cancer, and the adverse effects are tolerable.
