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Colorectal cancer microRNA

Nengyi Hou, Zhiyi Guo, Gaoping Zhao, Guiqing Jia, Bin Luo, Xiaogang Shen, Yifeng Bai
MicroRNA-21-3p (miR-21-3p), the passenger strand of pre-mir-21, has been found to be high-expressing in various cancers and to be associated with tumor malignancy, which is proposed as a novel focus in malignant tumors. Colorectal cancer (CRC), currently known as one of the most prevalent malignancy, is a leading cause of cancer death. This study aimed to investigate the key role of miR-21-3p in CRC by inhibiting its expression using transfection with miR-21-3p inhibitors into human CRC HCT116 cells. Results showed that the expression of miR-21-3p was higher than other CRC cells used in the study including Lovo, HT29, Colo320 and SW480 cells, inhibition of which suppressed the proliferation and induced cell cycle arrest in HCT116 cells...
March 14, 2018: Clinical and Experimental Pharmacology & Physiology
Yuzhuo Chen, Weiliang Song
The present study assessed the association between the Wnt/catenin β1 (CTNNB1)/microRNA (miR)183 signaling pathway and the recurrence and prognosis of colorectal cancer. The expression of Wnt, CTNNB1 and miR183 in primary colorectal cancer tissue was increased compared with that in the paracarcinoma tissue. Disease-free survival and overall survival were decreased in patients with colorectal cancer and increased miR183 expression compared with those in patients with colorectal cancer and decreased miR183 expression...
April 2018: Oncology Letters
Yang Li, Yanhong Duo, Jiangang Bi, Xiaowei Zeng, Lin Mei, Shiyun Bao, Lisheng He, Aijun Shan, Yue Zhang, Xiaofang Yu
Introduction: MicroRNA-155 (miR-155) is an oncogenic microRNA, which is upregulated in many human cancers including colorectal cancer (CRC). Overexpression of miR-155 has been found to regulate several cancer-related pathways, and therefore, targeting miR-155 may be an effective strategy for cancer therapy. However, effective and safe delivery of anti-miR-155 to tumors remains challenging for the clinical applications of anti-miR-155-based therapeutics. Methods: In this study, we explored the expression of miR-155 and the transcription factor nuclear factor kappa B (NF-κB) in CRC tissues and cell lines, and the possible relationship between miR-155 and NF-κB...
2018: International Journal of Nanomedicine
Yuetong Chen, Mulong Du, Wei Chen, Lingjun Zhu, Congye Wu, Zhengdong Zhang, Meilin Wang, Haiyan Chu, Dongying Gu, Jinfei Chen
MicroRNAs (miRNAs), endogenous small noncoding RNAs (ncRNAs), play crucial roles in cancer development. Many studies have demonstrated that miRNAs can serve as diagnostic and therapeutic biomarkers for malignancies. Additionally, single nucleotide polymorphisms (SNPs) located in miRNA functional regions have been reported to be involved in cancer susceptibility. In this study, we investigated the associations between SNPs located in miRNA functional regions and colorectal cancer (CRC) susceptibility. We systematically screened all candidate miRNAs and their SNPs and then evaluated the relationships between the SNPs and CRC susceptibility in a Han Chinese population including 878 patients with CRC and 884 controls...
March 13, 2018: Cancer Medicine
Yuqin Pan, Huiling Sun, Xiuxiu Hu, Bangshun He, Xiangxiang Liu, Tao Xu, Xiaoxiang Chen, Kaixuan Zeng, Shukui Wang
Recently, miR‑485‑5p was identified as a tumor‑suppressing microRNA in some human cancers. However, the expression and biological role of miR‑485‑5p in colorectal cancer (CRC) remain unclear. Herein, we found that the expression of miR‑485‑5p in CRC tissues and cell lines was much lower than that in the control, respectively. Moreover, the overexpression of miR‑485‑5p could inhibit the proliferation and invasion of CRC cell lines in vitro and in vivo. Furthermore, we determined that miR‑485‑5p could decrease the expression of CD147 by directly targeting CD147 3'UTR...
March 12, 2018: Oncology Reports
Ji-Su Mo, Young-Ran Park, Soo-Cheon Chae
MiRNAs are non-coding RNAs that play important roles in the pathogenesis of human diseases by regulating target gene expression in specific cells or tissues. Previously we identified colorectal cancer (CRC) associated MIR196B, which was specifically up-regulated in CRC cells and tissue. We also identified 18 putative MIR196B target genes by comparing the mRNAs down-regulated in MIR196B-overexpressed cells with MIR196B target genes predicted by public bioinformatics tools. In this study, we verified the association between MIR196B and three genes, HOXA5, HOXB6 and GLTP...
March 12, 2018: Pathology Oncology Research: POR
Qingqing Feng, Wei-Dong Chen, Yan-Dong Wang
The gut microbiota, as the main member in gut microecology, is an essential mediator in health and disease. The gut microbiota interacts with various organs and systems in the body, including brain, lung, liver, bone, cardiovascular system, and others. Microbiota-derived metabolites such as the short chain fatty acid (SCFA) butyrate are primary signals, which link the gut microbiota and physiology. Recently, the gut microbiota has been identified as the origin of a number of diseases by influencing the related cell signaling pathways such as WNT/beta-catenin pathway in colorectal cancer and T cell receptor signaling in the central nervous system...
2018: Frontiers in Microbiology
Chen Su, Daojiang Li, Nanpeng Li, Yuheng Du, Chunxing Yang, Yang Bai, Changwei Lin, Xiaorong Li, Yi Zhang
Pleomorphic adenoma gene like-2 (PLAGL2) is a zinc finger protein transcription factor, which is upregulated and serves an oncogenic function in multiple human malignancies, including colorectal cancer (CRC). First, reverse transcription-quantitative polymerase chain reaction (RT-qPCR) was used to detect the expression levels of PLAGL2 in CRC tissues and normal tissues. Then, bioinformatics analysis, RT-qPCR, western blotting, luciferase reporter assays and RNA-binding protein immunoprecipitation assays were performed to explore whether the underlying mechanisms, including copy number variation (CNV), microRNAs (miRNAs/miRs) and RNA-binding proteins (RBPs) led to the abnormal expression of PLAGL2...
March 6, 2018: International Journal of Oncology
Fei Yan, Zhiquan Tu, Li Duan, Dexing Wang, Feng Lin
Colorectal cancer (CRC) is the third-most prevalent cancer and the fourth‑most common cause of cancer-associated fatality worldwide. The expression and biological roles of microRNAs (miRNAs/miRs) in tumourigenesis, and their regulatory function in a number of biological processes correlated with cancer have been investigated. miR‑383 has been reported to be deregulated in several human cancer types. However, the involvement and effects of miR‑383 on CRC progression and its underlying mechanism remain unknown...
March 6, 2018: Molecular Medicine Reports
Kseniia Boriachek, Muhammad Umer, Md Nazmul Islam, Vinod Gopalan, Alfred K Lam, Nam-Trung Nguyen, Muhammad J A Shiddiky
Recent evidence suggests that small non-coding RNAs such as microRNA (miRNA) encapsulated in exosomes represent an important mechanism of communication between the cells. Exosomal miRNAs play an important role in carcinogenesis via enhancing the cell to cell communication and targeting the cell growth molecular pathways which in turn facilitate metastasis in cancers. Despite progressive advances, the current methods for the exosomal miRNA detection mostly rely on labor-intensive sequencing approaches which are often prone to amplification bias and require costly and bulky equipment...
March 7, 2018: Analyst
Wan-Cheng Xiong, Na Han, Nan Wu, Ke-Lei Zhao, Chen Han, Hui-Xin Wang, Guan-Fang Ping, Peng-Fei Zheng, Hailong Feng, Lei Qin, Peng He
Long noncoding RNAs (lncRNAs) are dysregulated in many diseases. MicroRNA-101 (miR-101) functions as a tumor suppressor by directly targeting ZEB1 in various cancers. However, the potential mechanism of lncRNA ZEB1-AS1 and miR-101/ZEB1 axis in CRC remains unknown. In this study, we further investigated the potential interplay between miR-101/ZEB1 axis and lncRNA ZEB1-AS1 in colorectal cancer (CRC). Results showed that ZEB1-AS1 was upregulated in CRC tissues and cells. MiR-101 was downregulated in CRC tissues and negatively correlated with ZEB1-AS1 and ZEB1 expression levels in CRC...
2018: American Journal of Translational Research
Sophie Paquet-Fifield, Shir Lin Koh, Lesley Cheng, Laura Marie Beyit, Carolyn E Shembrey, Christina Moelck, Corina Behrenbruch, Marina Papin, Meritxell Gironella, Sophie Guelfi, Ramona Nasr, Fanny Grillet, Michel Prudhomme, Jean-François Bourgaux, Antoni Castells, Jean-Marc Pascussi, Alexander G Heriot, Alain Puisieux, Melissa J Davis, Julie Pannequin, Andrew F Hill, Erica K Sloan, Frédéric Hollande
Post-treatment recurrence of colorectal cancer (CRC), the third most lethal cancer worldwide, is often driven by a subpopulation of cancer stem cells (CSCs). The tight junction (TJ) protein claudin-2 is overexpressed in human CRC where it enhances cell proliferation, colony formation, and chemoresistance in vitro. While several of these biological processes are features of the CSC phenotype, a role for claudin-2 in the regulation of these has not been identified. Here we report that elevated claudin-2 expression in stage II/III colorectal tumors is associated with poor recurrence-free survival following 5-FU-based chemotherapy, an outcome in which CSC play an instrumental role...
March 6, 2018: Cancer Research
Jiazhi Li, Kun Zou, Lihui Yu, Wenyue Zhao, Ying Lu, Jun Mao, Bo Wang, Lu Wang, Shujun Fan, Bo Song, Lianhong Li
MicroRNA-140, a cartilage-specific microRNA, has recently been implicated in the cancer progression. However, the comprehensive role of miR-140 in the invasion and metastasis of colorectal cancer (CRC) is still not fully understood. In this study, we confirmed that miR-140 downregulates SMAD family member 3 (Smad3), which is a key downstream effector of the TGF-β signaling pathway, at the translational level in the CRC cell lines. Ectopic expression of miR-140 inhibits the process of epithelial-mesenchymal transition (EMT), at least partially through targeting Smad3, and induces the suppression of migratory and invasive capacities of CRC cells in vitro...
March 2, 2018: Molecular Therapy. Nucleic Acids
Mee Sook Roh, Hyoun Wook Lee, Sang Bong Jung, Kyungeun Kim, Eun Hee Lee, Moon-Il Park, Jae Seok Lee, Mee-Seon Kim
MicroRNA-200c (miR-200c) is known to play a pivotal role in the regulation of epithelial-to-mesenchymal and mesenchymal-to-epithelial transition processes. However, the biological function of miR-200c in human carcinogenesis remains controversial. We examined the association of miR-200c expression with various clinicopathological factors, including KRAS mutation status and survival, in patients with colorectal cancer (CRC). The expression level of miR-200c was evaluated in 109 paired CRC and normal tissue samples using quantitative reverse transcription polymerase chain reaction...
February 26, 2018: Pathology, Research and Practice
Joana Marquez, Ines Fernandez-Piñeiro, Marcos J Araúzo-Bravo, Gereon Poschmann, Kai Stühler, Abdel-Majid Khatib, Alejandro Sanchez, Fernando Unda, Gaskon Ibarretxe, Irantzu Bernales, Iker Badiola
Phenotypic transformation of liver sinusoidal endothelial cells is one of the most important stages of liver metastasis progression. The miRNA effects on liver sinusoidal endothelial cells during liver metastasis have not yet been studied. Herein, whole genome analysis of miRNA expression in these cells during colorectal liver metastasis revealed repressed expression of microRNA-20a. Importantly, downregulation of miR-20a occurs in parallel with upregulation of its known protein targets. To restore normal miR-20a levels in liver sinusoidal endothelial cells, we developed chondroitin sulfate-sorbitan ester nanoparticles conjugated with miR-20a in a delivery system that specifically targets liver sinusoidal endothelial cells...
February 28, 2018: International Journal of Cancer. Journal International du Cancer
Brian S Roberts, Andrew A Hardigan, Dianna E Moore, Ryne C Ramaker, Angela L Jones, Meredith B Fitz-Gerald, Gregory M Cooper, C Mel Wilcox, Robert P Kimberly, Richard M Myers
PURPOSE: Colorectal cancer (CRC) is the third most common cancer worldwide, causing ~700,000 deaths each year. The majority of CRCs begin as adenomas. Definitive screening for colorectal adenomas is currently accomplished through colonoscopy but, owing largely to costs and invasiveness, is typically limited to patient groups at higher risk by virtue of age or family history. We sought to determine if blood-based small RNA markers could detect colorectal adenoma. EXPERIMENTAL DESIGN: We applied high-depth small RNA sequencing to plasma from a large (n=189) cohort of patients, balanced for age, sex, and ancestry...
February 28, 2018: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
Shuo Chen, Yan Wang, Yinan Su, Lin Zhang, Mingqing Zhang, Xueqing Li, Juan Wang, Xipeng Zhang
MicroRNAs (miRNAs) are small non‑coding RNAs, which are critical in a diverse range of biological processes, including development, differentiation, homeostasis, and in the formation of diseases by accelerating and/or inhibiting the translation of mRNAs. The present study aimed to examine the potential role of miRNA (miR)‑205‑5p in the developmental process of colorectal cancer (CRC) through protein‑tyrosine kinase 7 (PTK7). Initially, TargetScan was used to predict the miRNA target sites in the sequence of the PTK7 3'‑untranslated region...
February 28, 2018: Molecular Medicine Reports
Huifang Jin, Xiaoqing Shi, Yanteng Zhao, Mengle Peng, Yongkui Kong, Dongchun Qin, Xianping Lv
MicroRNAs play critical roles in the occurrence and progression in various cancers including colorectal cancer. Here, we found that microRNA-30a expression was significantly downregulated in colorectal cancer tissues compared to adjacent noncancerous tissues, and the suppression levels of microRNA-30a were significantly associated with tumor differentiation and lymph node metastasis. We also discovered that the expression level of microRNA-30a was inversely proportional to the invasive potential of several colorectal cancer cell lines...
January 1, 2018: Technology in Cancer Research & Treatment
Yun Zhu, Cindy Wang, Scott A Becker, Katie Hurst, Lourdes M Nogueira, Victoria J Findlay, E Ramsay Camp
Epithelial-to-mesenchymal transition (EMT) has been closely linked with therapy resistance and cancer stem cells (CSCs). However, EMT pathways have proven challenging to therapeutically target. MicroRNA 145 (miR-145) targets multiple stem cell transcription factors and its expression is inversely correlated with EMT. Therefore, we hypothesized that miR-145 represents a therapeutic target to reverse snail family transcriptional repressor 1 (SNAI1)-mediated stemness and radiation resistance (RT). Stable expression of SNAI1 in DLD1 and HCT116 cells (DLD1-SNAI1; HCT116-SNAI1) increased expression of Nanog and decreased miR-145 expression compared to control cells...
January 4, 2018: Molecular Therapy: the Journal of the American Society of Gene Therapy
Jian Shen, Minzhe Li
Accumulated studies have strongly implicated aberrantly expressed microRNAs (miRNAs) in carcinogenesis and cancer progression of various cancers, including colorectal cancer (CRC). Hence, a comprehensive study of miRNAs and their association with CRC may be a promising therapeutic method for patients with this malignancy. MiRNA-744 (miR-744) is abnormally expressed in several types of human cancer. Thus far, little is known about the expression, biological roles and exact mechanisms of miR-744 in CRC. Thus, the present study measured the expression level of miR-744 and investigated its roles and associated molecular mechanisms in CRC...
February 22, 2018: Oncology Research
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