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Colorectal cancer microRNA

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https://www.readbyqxmd.com/read/29160937/microrna-26b-promotes-colorectal-cancer-metastasis-by-down-regulating-pten-and-wnt5a
#1
Dejun Fan, Xutao Lin, Feng Zhang, Weijie Zhong, Jiancong Hu, Yufeng Chen, Zerong Cai, Yifeng Zou, Xiaowen He, Xiuting Chen, Ping Lan, Xiaojian Wu
Invasion and metastasis are crucially important factors in the survival of malignant tumors. The epithelial-mesenchymal transition (EMT) is an early step in metastatic progression and the presence of cancer stem cells is closely related to tumor survival, proliferation, metastasis, and recurrence. Here we report that ectopic overexpression of microRNA 26b (miR-26b) in colorectal cancer (CRC) cell lines promoted EMT and stem cell-like phenotypes in vitro. Furthermore, miR-26b directly targeted and suppressed multiple tumor suppressors, including phosphatase and tensin homolog (PTEN) and wingless-type MMTV integration site family member 5A (WNT5A)...
November 21, 2017: Cancer Science
https://www.readbyqxmd.com/read/29156733/an-integrated-lncrna-microrna-and-mrna-signature-to-improve-prognosis-prediction-of-colorectal-cancer
#2
Yongfu Xiong, Rong Wang, Linglong Peng, Wenxian You, Jinlai Wei, Shouru Zhang, Xingye Wu, Jinbao Guo, Jun Xu, Zhenbing Lv, Zhongxue Fu
Although the outcome of patients with colorectal cancer (CRC) has improved significantly, prognosis evaluation still presents challenges due to the disease heterogeneity. Increasing evidences revealed the close correlation between aberrant expression of certain RNAs and the prognosis. We envisioned that combined multiple types of RNAs into a single classifier could improve postoperative risk classification and add prognostic value to the current stage system. Firstly, differentially expressed RNAs including mRNAs, miRNAs and lncRNAs were identified by two different algorithms...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156521/micrornas-as-novel-biomarkers-for-colorectal-cancer-new-outlooks
#3
REVIEW
Naghmeh Shirafkan, Behzad Mansoori, Ali Mohammadi, Navid Shomali, Mehri Ghasbi, Behzad Baradaran
Colorectal cancer is one of the most prevalent cancers with high mortality in the world. MicroRNAs are a class of small non-coding RNAs that regulate gene expression through targeting mRNAs. MicroRNAs involve in many biological and pathological processes such as cell growth, differentiation, apoptosis. etc. Dysregulation of miRNAs expression patterns have been reported in many tumors including Colorectal Cancer. Various studies indicate that miRNAs can be utilized as diagnostic and prognostic biomarkers for evaluation of tumor initiation, development, invasion, metastasis and response to chemotherapeutic drugs...
November 14, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29154194/micrornas-in-intestinal-barrier-function-inflammatory-bowel-disease-and-related-cancers-their-effects-and-therapeutic-potentials
#4
REVIEW
Esmerina Tili, Jean-Jacques Michaille, Victoria Piurowski, Brooke Rigot, Carlo M Croce
The initiation and development or inflammatory bowel disease (IBD) and associated colorectal cancers, have been linked to inflammation. MicroRNAs are non-coding regulators of gene expression that have gained great attention due to their capability to regulate the expression of a number of target transcripts. It is now generally admitted that microRNAs are instrumental in gut pathologies, in particular through their targeting of transcripts encoding proteins of the intestinal barrier (IB) and their regulators...
November 15, 2017: Current Opinion in Pharmacology
https://www.readbyqxmd.com/read/29145210/diphthamide-biosynthesis-1-is-a-novel-oncogene-in-colorectal-cancer-cells-and-is-regulated-by-mir-218-5p
#5
Minghui Liu, Kai Yin, Xu Guo, Huijin Feng, Min Yuan, Yanqing Liu, Jianguo Zhang, Baoliang Guo, Chen Wang, Guangxin Zhou, Zhen Zhou, Chen-Yu Zhang, Xi Chen
BACKGROUND/AIMS: This study focused on the oncogenic role of Diphthamide biosynthesis 1 (DPH1) in colorectal cancer (CRC) cells. METHODS: The expression of DPH1 was determined by quantitative RT-PCR analysis and western blotting in CRC tissues. The role of DPH1 in CRC cells was investigated via cell viability and invasion assays under the condition of DPH1 silencing or overexpression. Bioinformatics analysis and luciferase reporter analysis were used to identify the upstream microRNA which might regulate DPH1...
November 17, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29137688/the-long-noncoding-rna-hotair-promotes-colorectal-cancer-progression-by-sponging-mir-197
#6
Xinyang Lu, Zhiqiang Liu, Xiaofei Ning, Lunhua Huang, Biao Jiang
The long non-coding RNA HOX transcript antisense RNA (HOTAIR) has been found overexpressed in many human malignancies and involved in tumor progression and metastasis. Although the downstream target through which HOTAIR modulates tumor metastasis is not well-known, evidence suggests that microRNA-197 (miR-197) might be involved in this event. In the present study, the significance of HOTAIR and miR-197 in the progression of colorectal cancer were detected in vitro and in vivo. We found that HOTAIR expression was significantly increased in colorectal cancer cells and tissues...
November 14, 2017: Oncology Research
https://www.readbyqxmd.com/read/29133238/mir-146a-targets-c-met-and-abolishes-colorectal-cancer-liver-metastasis
#7
Anne-Marie Bleau, Miriam Redrado, Estanislao Nistal-Villan, Maria Villalba, Francisco Exposito, Esther Redin, Arrate L de Aberasturi, Leyre Larzabal, Javier Freire, Javier Gomez-Roman, Alfonso Calvo
A major complication of colorectal cancer (CRC), one of the most frequent and deadly types of cancer, is disease progression via liver metastases. At this stage, very few treatment options are available for patients, and the disease remains incurable. Herein, we used a well-established mouse model of CRC liver metastasis (CLM) to identify new regulators of this process. Using serial transplantation of murine MC38 adenocarcinoma cells, we obtained liver metastatic variants that displayed extremely strong colonization abilities...
November 10, 2017: Cancer Letters
https://www.readbyqxmd.com/read/29133193/prognostic-value-of-microrna-224-in-various-cancers-a-meta-analysis
#8
Yue Zhang, Cong-Cong Guo, Dong-Hui Guan, Chuan-Hua Yang, Yue-Hua Jiang
BACKGROUND: During previous studies, microRNA-224 (miR-224) was frequently investigated and discovered to be of vital significance to prognosis of patients with various cancers. However, its accurate prognostic value has not been estimated worldwide. Herein, we performed meta-analysis to assess its potential predictive value in a variety of human tumors. METHODS: Qualified researches were identified up to March 1, 2017 through performing online searches in PubMed, EMBASE, Web of Science and Cochrane Database of Systematic Reviews...
November 10, 2017: Archives of Medical Research
https://www.readbyqxmd.com/read/29132384/mir-361-5p-inhibits-glycolytic-metabolism-proliferation-and-invasion-of-breast-cancer-by-targeting-fgfr1-and-mmp-1
#9
Fei Ma, Lei Zhang, Li Ma, Yiyun Zhang, Jianguo Zhang, Baoliang Guo
BACKGROUND: MicroRNAs function as key regulators in various human cancers, including breast cancer (BC). MiR-361-5p has been proved to be a tumor suppressor in colorectal cancer and gastric cancer in our previous study. In this study, we aim to find out the function of miR-361-5p in breast cancer progression and elaborate the mechanism that miR-361-5p acts its function in breast cancer. METHODS AND RESULTS: Here we reported that miR-361-5p was down-regulated in breast cancer tissue compared with normal breast tissue and the expression of miR-361-5p was positively associated with prognosis in BC patients...
November 13, 2017: Journal of Experimental & Clinical Cancer Research: CR
https://www.readbyqxmd.com/read/29119049/mir19b-3p-promotes-the-growth-and-metastasis-of-colorectal-cancer-via-directly-targeting-itgb8
#10
Liang Huang, Jin Lin Cai, Pin Zhu Huang, Liang Kang, Mei Jin Huang, Lei Wang, Jian Ping Wang
MicroRNAs (miRNAs) are widely up-regulated or down-regulated in a variety of tumors, including lung cancer, liver cancer, and colorectal cancer (CRC). Furthermore, miRNAs can function as tumor suppressors or proto-oncogenes by controlling the growth and metastasis of cancer cells. In the present study, we found a significant increase in miR19b-3p levels in CRC compared to tumor tissue and revealed the role of miR19b-3p in CRC growth and metastasis. The exogenous overexpression of miR19b-3p induced the proliferation, migration, and invasion of CRC cells in vitro...
2017: American Journal of Cancer Research
https://www.readbyqxmd.com/read/29115941/microrna-193a-3p-is-specifically-down-regulated-and-acts-as-a-tumor-suppressor-in-braf-mutated-colorectal-cancer
#11
Hidekazu Takahashi, Masanobu Takahashi, Shinobu Ohnuma, Michiaki Unno, Yuki Yoshino, Kota Ouchi, Shin Takahashi, Yasuhide Yamada, Hideki Shimodaira, Chikashi Ishioka
BACKGROUND: The aim of this study was to identify miRNAs specifically dysregulated in BRAF-mutated colorectal cancer, which could lead to a better understanding of the molecular mechanisms underlying oncogenesis of this malignant subtype of colorectal cancer. METHODS: Candidate dysregulated miRNAs were selected in genome-wide miRNA expression array analysis using a screening set composed of 15 BRAF-mutated and 15 non-KRAS/BRAF-mutated colorectal cancers. The miRNA expressions were validated in another set of patients...
November 7, 2017: BMC Cancer
https://www.readbyqxmd.com/read/29115526/the-long-non-coding-rna-enst00000547547-reduces-5-fluorouracil-resistance-of-colorectal-cancer-cells-via-competitive-binding-to-microrna-31
#12
Jian Li, Xiaorong Li, Chaoqun Cen, Xiaohui Ai, Changwei Lin, Gui Hu
Colorectal cancer (CRC) is one of the most common cancers and the third leading cause of cancer-related deaths due to its rapid progression and poor prognosis. 5-Fluorouracil (5-FU)-based chemotherapies are the standard treatment for locally advanced CRC. However, a considerable percentage of CRCs have inherent or acquired 5-FU resistance, which critically impedes clinical outcomes. In the present study, we reported that the expression level ENST00000547547 was downregulated in 5-FU-resistant CRC cells in comparison with the parental cells, While rising with the treatment of 5-FU in parental cells...
November 7, 2017: Oncology Reports
https://www.readbyqxmd.com/read/29115525/microrna%C3%A2-103-regulates-tumorigenesis-in-colorectal-cancer-by-targeting-zo%C3%A2-1
#13
Jin Ke, Weiwei Shao, Yasu Jiang, Junfei Xu, Feng Li, Jun Qin
Given the emerging role of microRNAs (miRs) in cancer progression, the present study investigated the role and underlying mechanism of miR‑103 in colorectal cancer (CRC). Reverse transcription‑quantitative polymerase chain reaction was conducted to quantify the expression levels of miR‑103 in clinical specimens and cell lines. The role of miR‑103 in CRC was examined using MTT, colony formation and transwell assays. In addition, a luciferase reporter assay was used to confirm an associated between the 3' untranslated region of zonula occuldens‑1 (ZO‑1) and miR‑103...
November 7, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29112225/global-and-targeted-circulating-microrna-profiling-of-colorectal-adenoma-and-colorectal-cancer
#14
Jinhua Zhang, Gottumakkala S Raju, David W Chang, Shu-Hong Lin, Zhinan Chen, Xifeng Wu
BACKGROUND: Circulating microRNAs (miRNAs) are emerging as promising biomarkers for cancer. The objective of the current study was to investigate the potential of circulating cell-free miRNAs as biomarkers for colorectal cancer (CRC) and its precursor lesion, colorectal adenoma. METHODS: The serum levels of 800 miRNAs were assessed in a discovery set of 21 patients with CRC, 19 patients with adenoma, and 21 healthy controls using the NanoString miRNA analysis platform...
November 7, 2017: Cancer
https://www.readbyqxmd.com/read/29109785/overexpression-of-mir-194-reverses-hmga2-driven-signatures-in-colorectal-cancer
#15
Hsin-Yi Chang, Shu-Ping Ye, Shiow-Lin Pan, Tzu-Ting Kuo, Bia Chia Liu, Yi-Lin Chen, Tsui-Chin Huang
Colorectal cancer (CRC) is one of the leading causes of cancer death worldwide with increasing incidence and mortality in developed countries. Oncogenes and microRNAs regulate key signaling pathways in CRC and are known to be deregulated. Oncogenic transcriptional regulator high-mobility group AT-hook 2 (HMGA2) participates in the transformation of several cancers including CRC and exhibits strong correlation with poor prognosis and distal metastasis. Evidence of HMGA2 and its co-regulated miRs contributing to tumor progression remains to be clarified...
2017: Theranostics
https://www.readbyqxmd.com/read/29108270/s-adenosylmethionine-and-methylthioadenosine-inhibit-cancer-metastasis-by-targeting-microrna-34a-b-methionine-adenosyltransferase-2a-2b-axis
#16
Maria Lauda Tomasi, Carla Cossu, Ylenia Spissu, Andrea Floris, Minjung Ryoo, Ainhoa Iglesias-Ara, Qiang Wang, Stephen J Pandol, Neil A Bhowmick, Ekihiro Seki, Edwin M Posadas, Shelly C Lu
MicroRNA-34a (miR-34a) is down-regulated in colorectal cancers (CRC) and required for interleukin-6 (IL-6)-induced CRC metastasis. Mice lacking miR-34a developed more invasive cancer in a colitis-associated cancer model. In the same model, S-adenosylmethionine (SAMe) and methylthioadenosine (MTA) inhibited IL-6/STAT3 and lowered tumor burden. SAMe and MTA reduce the expression of methionine adenosyltransferase 2A (MAT2A) and there are consensus binding sites for miR-34a/b in the MAT2A 3'UTR. Here we examined whether SAMe/MTA influence miR-34a/b expression and cancer metastasis...
October 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/29108255/comprehensive-bioinformatics-analysis-of-the-characterization-and-determination-underlying-mechanisms-of-over-expression-and-co-expression-of-genes-residing-on-20q-in-colorectal-cancer
#17
Daojiang Li, Changwei Lin, Miao Chen, Nanpeng Li, Yuheng Du, Chen Su, Chunxing Yang, Ni Gong, Hao Wu, Runliu Wu, Arad Jain, Yi Zhang, Xiaorong Li
The Long arm of chromosome 20 (20q) is closely related to the development of colorectal cancer, so identifying the expression profile of genes on 20q through a comprehensive overview is indispensable. In this article, preliminar experimental data, several available databases and bioinformatics tools such as the Cancer Genome Atlas, the Encyclopedia of DNA Elements, the JASPAR database and starBase were combined to analyze the correlation between genes and chromosomal aberrations, microRNA and transcription factors, as well as to explore the expression feature and potential regulative mechanism...
October 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/29108252/circulating-exosomal-microrna-203-is-associated-with-metastasis-possibly-via-inducing-tumor-associated-macrophages-in-colorectal-cancer
#18
Yuki Takano, Takaaki Masuda, Hisae Iinuma, Rui Yamaguchi, Kuniaki Sato, Taro Tobo, Hidenari Hirata, Yosuke Kuroda, Sho Nambara, Naoki Hayashi, Tomohiro Iguchi, Shuhei Ito, Hidetoshi Eguchi, Takahiro Ochiya, Katsuhiko Yanaga, Satoru Miyano, Koshi Mimori
A primary tumor can create a premetastatic niche in distant organs to facilitate the development of metastasis. The mechanism by which tumor cells communicate with host cells to develop premetastatic niches is unclear. We focused on the role of microRNA (miR) signaling in promoting metastasis. Here, we identified miR-203 as a signaling molecule between tumors and monocytes in metastatic colorectal cancer (CRC) patients. Notably, high expression of serum exosomal miR-203, a major form in circulation, was associated with distant metastasis and an independent poor prognostic factor, whereas low expression in tumor tissues was a poor prognostic factor in CRC patients...
October 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/29090038/methods-and-novel-technology-for-microrna-quantification-in-colorectal-cancer-screening
#19
REVIEW
Laura Moody, Hongshan He, Yuan-Xiang Pan, Hong Chen
The screening and diagnosis of colorectal cancer (CRC) currently relies heavily on invasive endoscopic techniques as well as imaging and antigen detection tools. More accessible and reliable biomarkers are necessary for early detection in order to expedite treatment and improve patient outcomes. Recent studies have indicated that levels of specific microRNA (miRNA) are altered in CRC; however, measuring miRNA in biological samples has proven difficult, given the complicated and lengthy PCR-based procedures used by most laboratories...
2017: Clinical Epigenetics
https://www.readbyqxmd.com/read/29080751/microrna-195-desensitizes-hct116-human-colon-cancer-cells-to-5-fluorouracil
#20
Chongtae Kim, Youlim Hong, Heejin Lee, Hoin Kang, Eun Kyung Lee
Multidrug resistance is one major barrier to successful chemotherapy. Although several studies have attempted to overcome resistance of cancer cells to anti-cancer drugs, key determinants of resistance remain largely unknown. The objective of this study was to investigate whether microRNAs might play a role in the acquisition of resistance. Human colorectal cancer HCT-116 cell lines were transduced with a lentivirus library containing 578 precursor microRNAs (miRNAs) to establish cell lines resistant to 5-fluorouracil (5-FU)...
November 3, 2017: Cancer Letters
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