Colon Cancer
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BMC Genomics ◽  
2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Haitao Gu ◽  
Zhiquan Xu ◽  
Jianbo Zhang ◽  
Yanbing Wei ◽  
Ling Cheng ◽  
...  

Abstract Objective Colon cancer (CC) is one of the most common cancers whose progression is regulated by a number of factors, including circular RNAs (circRNAs). Nonetheless, circ_0038718 is a novel circRNA, and its regulatory mechanism in CC remains unclear. Methods Real-time quantitative PCR (qRT-PCR) was performed to detect the expression of circ_0038718, miR-195-5p and Axin2. Western blot was conducted to determine the protein expression of Axin2 and the key proteins on Wnt/β-catenin signaling pathway. Oligo (dT) 18 primers and RNase R were employed to identify the circular features of circ_0038718, and the location of circ_0038718 in cells was detected via nucleocytoplasmic separation. Dual-luciferase reporter assay and RNA binding protein immunoprecipitation experiment were carried out to investigate the molecular mechanism of circ_0038718/miR-195-5p/Axin2. Additionally, MTT assay was conducted to assess cell proliferation; Transwell assay was performed to evaluate cell migration and invasion, respectively. The effect of circ_0038718 on CC tumor growth was tested through tumor formation in nude mice. Results circ_0038718 was highly expressed in CC and could sponge miR-195-5p in cytoplasm. Silencing circ_0038718 suppressed the proliferative, migratory and invasive abilities of CC cells, while the promoting effect of high circ_0038718 expression on CC cells was reversed upon miR-195-5p over-expression. Axin2 was a downstream target of miR-195-5p and could regulate the Wnt/β-catenin signaling pathway. Axin2 expression was modulated by circ_0038718/miR-195-5p. Knockdown of Axin2 could also attenuate the promoting effect of high circ_0038718 expression on CC cell malignant progression, thus inhibiting tumor growth. Conclusion circ_0038718 is able to facilitate CC cell malignant progression via the miR-195-5p/Axin2 axis, which will provide a new idea for finding a novel targeted treatment of CC.


2021 ◽  
Author(s):  
zhongyu wang ◽  
Zhibin Yang ◽  
xianshuo cheng ◽  
shaojun Fang

Abstract BackgroundPerineural invasion (PNI) is a prominent characteristic of multiple solid tumors and indicates poor prognosis[1, 2]. A growing body of evidence emphasizes the critical role of competitive endogenous RNA(ceRNA) regulatory networks in various human cancers. However, the complexity and behavior characteristics of the ceRNA network in colon cancer with perineural invasion were still unclear. In this study, we aimed to clarify a midkine(MDK)-related ceRNA regulatory network and identify potential prognostic markers associated with colon cancer with perineural invasion.Material and MethodsWe extract the expression profiles of three RNAs (long non-coding RNAs [lncRNAs], microRNAs [miRNAs], and mRNAs) from The Cancer Genome Atlas (TCGA) database. In order to construct the lncRNA-miRNA-mRNA triple regulatory network in colon cancer with perineural invasion, we performed joint analysis in the MDKhigh and MDKlow expression groups, as well as the colon cancer and paracancerous tissue groups. Kaplan-Meier method was used to plot the Overall survival (OS) curves, and the log-rank test was used for testing. Univariate and multivariate Cox regression analysis were used to determine OS-related characteristics.ResultsKCNQ1OT1-miR-454-3p/miR-204-5p-MAP1B ceRNA network related to the prognosis of colon cancer was obtained through bioinformatics analysis. Importantly, we determined the KCNQ1OT1/MAP1B axis in the ceRNA through correlation analysis, and through Cox regression analysis it seems to be a clinical prognostic model. ConclusionIn conclusion, the current study constructing a ceRNA based KCNQ1OT1/MAP1B axis may be a novel important prognostic factor for the diagnosis and prognosis of colon cancer with perineural invasion.


2021 ◽  
Author(s):  
Corrado Pedrazzani ◽  
Giulia Turri ◽  
Soo Yeun Park ◽  
Koya Hida ◽  
Yudai Fukui ◽  
...  

2021 ◽  
Vol 12 ◽  
Author(s):  
Jiamei Le ◽  
Houlin Ji ◽  
Xiaoxiao Zhou ◽  
Xindong Wei ◽  
Yifan Chen ◽  
...  

Sennoside A (SA) is a natural dianthrone glycoside mainly from medicinal plants of Senna and Rhubarb, and used as a folk traditional irritant laxative and slimming health food. Accumulating evidences suggest that SA possesses numerous pharmacological properties, such as laxative, anti-obesity, hypoglycemic, hepatoprotective, anti-fibrotic, anti-inflammatory, anti-tumor, anti-bacterial, anti-fungal, anti-viral, and anti-neurodegenerative activities. These pharmacological effects lay the foundation for its potential application in treating a variety of diseases. However, numerous published studies suggest that a long-term use of SA in large doses may have some adverse effects, including the occurrence of melanosis coli and carcinogenesis of colon cancer, thereby limiting its clinical use. It remains to be established whether SA or its metabolites are responsible for the pharmacological and toxicity effects. In this review, the latest advances in the pharmacology, toxicology, and metabolism of SA were summarizedbased on its biological characteristics and mechanism.


2021 ◽  
Author(s):  
Li Huang ◽  
Zuojian Hu ◽  
Ruixian Luo ◽  
Hailan Li ◽  
Ziji Yang ◽  
...  

Abstract Background: Ample evidence has revealed that the lymphocyte-to-monocyte ratio (LMR), albumin-to-globulin ratio (AGR) and mean platelet volume (MPV) are cancer-related inflammatory markers. The present study aimed to assess a better diagnostic marker for the progression of colon cancer. Methods: This retrospective study enrolled 251 patients with colon cancer, 171 patients with benign colon diseases, and 187 healthy control subjects from January 2012 to September 2020. The receiver operating characteristic (ROC) curve and area under the curve (AUC) were used to determine the diagnostic values of the selected inflammatory index.Results: The levels of LMR, AGR and MPV were decreased in the colon cancer group compared with the healthy control and benign colon disease groups. The LMR, AGR and MPV were all correlated with tumor size. Moreover, LMR and AGR was associated with lymph node metastasis and clinical stage, AGR was related to distant metastasis. Both the LMR (p = 0.030) and AGR (p = 0.005) were negatively correlated with the concentration of carcinoembryonic antigen (CEA). The AUC value of MPV combined with CEA had a good diagnostic ability for distinguishing controls from colon cancer cases (AUC = 0.950) and patients with benign colon diseases (AUC = 0.886). Meanwhile, the combination of LMR or AGR with CEA could enhance the diagnostic efficacy (AUC; 0.746 for LMR + CEA, 0.737 for AGR + CEA) of detecting colon cancer from benign colon diseases. Conclusions: CEA combined with the selected inflammatory index may be used as better blood-based biomarkers in the progression of colon cancer patients.


2021 ◽  
Vol 11 ◽  
Author(s):  
Yewen Feng ◽  
Lu Deng ◽  
Hengrui Guo ◽  
Yumin Zhao ◽  
Fu Peng ◽  
...  

BackgroundNormalising tumour vessels had become a significant research focus in tumour treatment research in recent years. Curcumae rhizoma (CR) is an essential plant in traditional Chinese medicine as it promotes blood circulation and removes blood stasis. Similarly, CR improves local blood circulation.PurposeWe explored the anti-colon cancer effects of essential oil from CR (OCR) by investigating its role in normalising tumour vessels. We also provided a basis for research and development into new anti-cancer drugs.MethodsWe used colon cancer as a research focus to investigate OCR. We established an in vitro co-culture model of colon cancer cells and human umbilical vein endothelial cells (HUVEC). We also established an in vivo subcutaneous implant colon cancer model in nude mice. These studies allowed us to evaluate the comprehensive effects of OCR in in vivo and in vitro colon cancer and its role in normalising tumour blood vessels.ResultsIn vitro, we found that OCR inhibited Human colon cancer cells (HCT116) and HUVEC cell proliferation and inhibited vascular endothelial growth factor-a (VEGFa) mRNA and protein expression in HUVECs in a co-culture system. Our in vivo studies showed that OCR inhibited colon cancer tumour growth, reduced angiogenesis in tumours and increased vascular endothelial (VE)-cadherin and pericyte coverage in tumour vessels.ConclusionsOCR inhibited colon cancer growth both in in vivo and in vitro models, reduced angiogenesis in tumours, improved tumour vessel structures and normalised tumour vessels.


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