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Colorectal cancer microRNA

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https://www.readbyqxmd.com/read/29345294/hypoxia-stimulates-the-cytoplasmic-localization-of-oncogenic-long-noncoding-rna-linc00152-in-colorectal-cancer
#1
Yujiro Nishizawa, Masamitsu Konno, Ayumu Asai, Jun Koseki, Koichi Kawamoto, Norikatsu Miyoshi, Hidekazu Takahashi, Naohiro Nishida, Naotsugu Haraguchi, Daisuke Sakai, Toshihiro Kudo, Taishi Hata, Chu Matsuda, Tsunekazu Mizushima, Taroh Satoh, Yuichiro Doki, Masaki Mori, Hideshi Ishii
Recent studies have indicated that long noncoding RNAs (lncRNAs) play a pivotal role in almost all physiological cellular processes, including every stage of cancer development. Given that hypoxia in the tumor microenvironment is involved in the malignant behavior of tumors, such as invasion and metastasis, we investigated the cytoplasmic and nuclear localization of lncRNAs in colorectal cancer cells. A cell culture under hypoxic conditions revealed several lncRNAs, such as LINC00152, whose levels were increased in the cytoplasm of colorectal cancer cells...
February 2018: International Journal of Oncology
https://www.readbyqxmd.com/read/29342159/prediction-of-novel-target-genes-and-pathways-involved-in-bevacizumab-resistant-colorectal-cancer
#2
Precious Takondwa Makondi, Chia-Hwa Lee, Chien-Yu Huang, Chi-Ming Chu, Yu-Jia Chang, Po-Li Wei
Bevacizumab combined with cytotoxic chemotherapy is the backbone of metastatic colorectal cancer (mCRC) therapy; however, its treatment efficacy is hampered by therapeutic resistance. Therefore, understanding the mechanisms underlying bevacizumab resistance is crucial to increasing the therapeutic efficacy of bevacizumab. The Gene Expression Omnibus (GEO) database (dataset, GSE86525) was used to identify the key genes and pathways involved in bevacizumab-resistant mCRC. The GEO2R web tool was used to identify differentially expressed genes (DEGs)...
2018: PloS One
https://www.readbyqxmd.com/read/29338680/microrna-466-mir-466-functions-as-a-tumor-suppressor-and-prognostic-factor-in-colorectal-cancer-crc
#3
Feng Tong, Youhua Ying, Haihua Pan, Wei Zhao, Hongchen Li, Xiaoli Zhan
MicroRNAs (miRNAs) have an important role in the regulation of tumor development and metastasis. In this study, we investigated the clinical and prognostic value as well as biological function of miR-466 in colorectal cancer (CRC). Tumor and adjacent healthy tissues were obtained from 100 patients diagnosed with CRC. miR-466 expression was determined by quantitative reverse transcription polymerase chain reaction (qRT-PCR). mRNA and protein levels of cyclin D1, apoptosis regulator BAX (BAX), and matrix metalloproteinase-2 (MMP-2) were analyzed by qRT-PCR and Western blot, respectively, in SW-620 CRC cells transfected with miR-466 mimics or negative control miRNA...
January 17, 2018: Bosnian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/29337244/mir-142-5p-act-as-an-oncogenic-microrna-in-colorectal-cancer-clinicopathological-and-functional-insights
#4
Farhadul Islam, Vinod Gopalan, Jelena Vider, Cu-Tai Lu, Alfred K-Y Lam
OBJECTIVES: miR-142-5p was noted aberrantly expressed and plays important roles in different pathophysiological conditions in human. The present study aims to examine the expression of miR-142-5p and its association with clinicopathological factors in a large cohort of patients with colorectal cancer. In addition, the cellular effects of miR-142-5p and its interacting targets in colon cancer cells were investigated. METHODS: Expression of miR-142-5p in colorectal cancer tissues (n=125) and colon cancer cell lines were analysed using real-time polymerase chain reaction...
January 11, 2018: Experimental and Molecular Pathology
https://www.readbyqxmd.com/read/29331762/suppression-of-capn4-by-microrna-1271-impedes-the-proliferation-and-invasion-of-colorectal-cancer-cells
#5
Jibin Li, Jian Xu, Xiaofei Yan, Keer Jin, Wenya Li, Rui Zhang
Accumulating evidence has suggested that calpain small subunit 1 (Capn4) plays an important role in the development and progression of malignant tumors. However, little is known about the role of Capn4 in colorectal cancer (CRC). In this study, we aimed to investigate the potential role of Capn4 in CRC and the regulation of Capn4 by microRNAs (miRNAs). Here, we found that Capn4 expression was highly up-regulated in CRC cell lines. Knockdown of Capn4 by siRNA significantly inhibited the proliferation and invasion of CRC cell lines...
January 10, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29328486/mir%C3%A2-873-inhibits-colorectal-cancer-cell-proliferation-by-targeting-traf5-and-tab1
#6
Hui Gong, Lishan Fang, Yifan Li, Jihui Du, Bei Zhou, Xiu Wang, Hekai Zhou, Lingli Gao, Kaixin Wang, Juan Zhang
MicroRNA-873 (miR‑873) has been reported to be dysregulated in a variety of malignancies, however, the biological function and underlying molecular mechanism of miR‑873 in colorectal cancer (CRC) remain unclear. In the present study we found that the expression levels of miR‑873 were markedly decreased in CRC cell lines and tissues from patients. Statistical analysis revealed that miR‑873 expression was inversely correlated with the disease stage of CRC. Kaplan‑Meier survival analysis revealed that patients with CRC with lower miR‑873 expression had shorter overall survival rates...
January 8, 2018: Oncology Reports
https://www.readbyqxmd.com/read/29328379/mir%C3%A2-1273g%C3%A2-3p-promotes-proliferation-migration-and-invasion-of-lovo-cells-via-cannabinoid-receptor-1-through-activation-of-erbb4-pik3r3-mtor-s6k2-signaling-pathway
#7
Min Li, Xiaoping Qian, Mingzhen Zhu, Aiyi Li, Mingzhi Fang, Yong Zhu, Jingyu Zhang
MicroRNAs (miR) are important in various crucial cell processes including proliferation, migration and invasion. Dysregulation of miRNAs have been increasingly reported to contribute to colorectal cancer. However, the detailed biological function and potential mechanisms of miR‑1273g‑3p in colorectal cancer remain poorly understood. The expression levels of miR‑1273g‑3p in human colorectal cancer LoVo cell lines were detected via reverse transcription‑quantitative polymerase chain reaction (RT‑qPCR)...
January 9, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29327093/mir-181-family-specific-behavior-in-different-cancers-a-meta-analysis-view
#8
Cecilia Pop-Bica, Sebastian Pintea, Roxana Cojocneanu-Petric, Giannino Del Sal, Silvano Piazza, Zhao-Hui Wu, Alvaro J Alencar, Izidore S Lossos, Ioana Berindan-Neagoe, George A Calin
The involvement of microRNAs in malignant transformation and cancer progression was previously grounded. The observations made by multiple published studies led to the conclusion that some of these small sequences could be eventually used as biomarkers for diagnosis/prognosis. This meta-analysis investigated whether microRNA-181 family members could predict the outcome of patients carrying different types of cancer. We searched the PubMed and Embase databases for studies evaluating the expression levels of miR-181a/b/c/d in patients with cancer, selecting the publications that assessed the relation between low and high levels of one of these four microRNAs and patients' outcome...
January 11, 2018: Cancer Metastasis Reviews
https://www.readbyqxmd.com/read/29325758/mir-186-5p-upregulation-inhibits-proliferation-metastasis-and-epithelial-to-mesenchymal-transition-of-colorectal-cancer-cell-by-targeting-zeb1
#9
Jinlei Li, Limin Xia, Zhenhua Zhou, Zhigui Zuo, Chang Xu, Huayu Song, Jianhui Cai
MicroRNA-186-5p (miR-186-5p) is upregulated and exhibits as a crucial oncogene in various human tumors. However, the functions and underlying mechanisms of this microRNA on colorectal cancer remain largely unknown. Here, we report that miR-186-5p share a lower expression in colorectal cancer cell lines (HT116, H29, SW620 and LoVo) than in normal colonic epithelial cell line NCM460. MiR-186-5p overexpression inhibits proliferation, metastasis and epithelial-to-mesenchymal transition (EMT) of colorectal cancer cell line LoVo...
January 8, 2018: Archives of Biochemistry and Biophysics
https://www.readbyqxmd.com/read/29321086/microrna-511-inhibits-cellular-proliferation-and-invasion-in-colorectal-cancer-by-directly-targeting-hepatoma-derived-growth-factor
#10
Saifei He, Guangdong Wang, Jing Ni, Juhua Zhuang, Suiliang Zhuang, Guoyu Wang, Ying Ye, Wei Xia
Dysregulated microRNAs (miRNAs) expression is involved in the occurrence and development of colorectal cancer (CRC) through the regulation of various important physiological events. Hence, miRNAs may be used as effective targets for CRC treatment; however, this hypothesis warrants further investigation. MiRNA-511 (miR511) plays vital roles in the progression of different tumour types. However, the expression, exact role and the mechanisms underlying the regulation of colorectal carcinogenesis and progression by miR-511 remain poorly understood...
January 10, 2018: Oncology Research
https://www.readbyqxmd.com/read/29315995/microrna-1271-suppresses-the-proliferation-and-invasion-of-colorectal-cancer-cells-by-regulating-metadherin-wnt-signaling
#11
Xiaoli Sun, Hongjun Zhai, Xi Chen, Ranran Kong, Xinwu Zhang
Recent studies have reported an important role for microRNA-1271 (miR-1271) in tumorigenesis. However, the role of miR-1271 in colorectal cancer remains unknown. Here, we found that miR-1271 was significantly decreased in colorectal cancer tissues and cell lines. Overexpression of miR-1271 inhibited cell proliferation, colony formation, cell invasion, and induced cell cycle arrest in colorectal cancer cells. Metadherin (MTDH) was identified as a target gene of miR-1271. Moreover, miR-1271 negatively regulated MTDH expression in colorectal cancer cells and reversely correlated with MTDH expression in colorectal cancer specimens...
January 5, 2018: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/29310839/decoding-colorectal-cancer-epigenomics
#12
REVIEW
Khalid El Bairi, Kanwal Tariq, Imane Himri, Abdeslam Jaafari, Wiam Smaili, Abdul Hafeez Kandhro, Adel Gouri, Bouchra Ghazi
Colorectal cancer (CRC) is very heterogeneous and presents different types of epigenetic alterations including DNA methylation, histone modifications and microRNAs. These changes are considered as characteristics of various observed clinical phenotypes. Undoubtedly, the discovery of epigenetic pathways with novel epigenetic-related mechanisms constitutes a promising advance in cancer biomarker discovery. In this review, we provide an evidence-based discussing of the current understanding of CRC epigenomics and its role in initiation, epithelial-to-mesenchymal transition and metastasis...
January 2018: Cancer Genetics
https://www.readbyqxmd.com/read/29304823/microrna-494-promotes-cancer-progression-and-targets-adenomatous-polyposis-coli-in-colorectal-cancer
#13
Ying Zhang, Lu Guo, Yuhuan Li, Gui-Hai Feng, Fei Teng, Wei Li, Qi Zhou
BACKGROUND: Aberrant activation of the Wnt/β-catenin signaling pathway is frequently observed in colorectal cancer (CRC). β-catenin is the major Wnt signaling pathway effector and inactivation of adenomatous polyposis coli (APC) results in nuclear accumulation of β-catenin. It has been suggested that inactivation of APC plays an important role in activation of the Wnt/β-catenin pathway and in the progression of colorectal tumorigenesis. However, the mechanism through which APC mediates colorectal tumorigenesis is not understood...
January 5, 2018: Molecular Cancer
https://www.readbyqxmd.com/read/29285066/hyperthermia-exposure-induces-apoptosis-and-inhibits-proliferation-in-hct116-cells-by-upregulating-mir-34a-and-causing-transcriptional-activation-of-p53
#14
Zan Luo, Kangxia Zheng, Qi Fan, Xinyao Jiang, Dehai Xiong
Hyperthermia, as an anticancer therapeutic strategy, presents notable advantages in conjunction with irradiation and/or chemotherapy in the treatment of cancer by promoting apoptosis and inhibiting proliferation. A number of studies have documented that hyperthermia inhibits cancer progression through transcriptional activation of p53, which promotes cell cycle arrest and apoptosis. However, the underlying molecular mechanisms of hyperthermia-regulated apoptosis and proliferation dependent on p53 remain largely unknown...
December 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29283887/exosomal-micrornas-derived-from-colorectal-cancer-associated-fibroblasts-role-in-driving-cancer-progression
#15
Rahul Bhome, Rebecca W Goh, Marc D Bullock, Nir Pillar, Stephen M Thirdborough, Massimiliano Mellone, Reza Mirnezami, Dieter Galea, Kirill Veselkov, Quan Gu, Timothy J Underwood, John N Primrose, Olivier De Wever, Noam Shomron, A Emre Sayan, Alex H Mirnezami
Colorectal cancer is a global disease with increasing incidence. Mortality is largely attributed to metastatic spread and therefore, a mechanistic dissection of the signals which influence tumor progression is needed. Cancer stroma plays a critical role in tumor proliferation, invasion and chemoresistance. Here, we sought to identify and characterize exosomal microRNAs as mediators of stromal-tumor signaling. In vitro, we demonstrated that fibroblast exosomes are transferred to colorectal cancer cells, with a resultant increase in cellular microRNA levels, impacting proliferation and chemoresistance...
December 28, 2017: Aging
https://www.readbyqxmd.com/read/29273554/competitive-endogenous-rna-in-colorectal-cancer-a-systematic-review
#16
REVIEW
Han Shuwen, Zhou Qing, Zheng Yan, Yang Xi
Colorectal cancer is one of the most common malignant tumours. Competitive endogenous RNA (ceRNA) networks have been hypothesized, in which various RNAs regulate each other's expression using microRNA response elements (MREs). Recent evidence has highlighted the crucial regulatory roles of ceRNA networks in colorectal cancer. In this review, we summarize the present research methods as well as the currently known ceRNA competitors and targets in colorectal cancer. In addition, we discuss the significance of ceRNA and shortcomings of current studies of colorectal cancer...
December 19, 2017: Gene
https://www.readbyqxmd.com/read/29258530/disruption-of-the-c-myc-mir-200b-3p-prdx2-regulatory-loop-enhances-tumor-metastasis-and-chemotherapeutic-resistance-in-colorectal-cancer
#17
Zhenbing Lv, Jinlai Wei, Wenxian You, Rong Wang, Jingkun Shang, Yongfu Xiong, Hua Yang, Xuanhua Yang, Zhongxue Fu
BACKGROUND: Metastasis is a major threat to colorectal cancer (CRC) patients. We have reported that peroxiredoxin-2 (PRDX2) is associated with CRC invasion and metastasis. However, the mechanisms regulating PRDX2 expression remain unclear. We investigate whether microRNAs (miRNAs) regulate PRDX2 expression in CRC progression. METHODS: Quantitative real-time polymerase chain reaction (qPCR) was used to measure microRNA-200b-3p (miR-200b-3p) expression. Immunohistochemistry (IHC) was performed to detect c-Myc and PRDX2 protein levels in CRC tissue samples (n = 97)...
December 19, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/29258163/regulation-of-emt-in-colorectal-cancer-a-culprit-in-metastasis
#18
REVIEW
Trung Vu, Pran K Datta
Epithelial to mesenchymal transition (EMT) is a process during which cells lose their epithelial characteristics, for instance cell polarity and cell-cell contact, and gain mesenchymal properties, such as increased motility. In colorectal cancer (CRC), EMT is associated with an invasive or metastatic phenotype. In this review, we discuss recent studies exploring novel regulation mechanisms of EMT in CRC, including the identification of new CRC EMT regulators. Upregulation of inducers can promote EMT, leading to increased invasiveness and metastasis in CRC...
December 16, 2017: Cancers
https://www.readbyqxmd.com/read/29247825/hypoxia-induced-microrna-590-5p-promotes-colorectal-cancer-progression-by-modulating-matrix-metalloproteinase-activity
#19
Chan Woo Kim, Eun-Taex Oh, Joon Mee Kim, Jin-Seok Park, Don Haeng Lee, Jae-Seon Lee, Kyung Keun Kim, Heon Joo Park
Hypoxia leads to cancer progression and promotes the metastatic potential of cancer cells. MicroRNAs (miRNAs) are small non-coding RNA that have emerged as key players involved in cancer development and progression. Hypoxia alters a set of hypoxia-mediated miRNAs expression during tumor development and it may function as oncogenes or tumor-suppressors. However, the roles and molecular mechanisms of hypoxia-regulatory miRNAs in colorectal cancer (CRC) progression remain poorly understood. Here we firstly identified miR-590-5p as hypoxia-sensitive miRNAs which was upregulated in colon cancer cells under hypoxia...
December 14, 2017: Cancer Letters
https://www.readbyqxmd.com/read/29240449/mir-19-5p-enhances-tumorigenesis-in-human-colorectal-cancer-cells-by-targeting-tspyl5
#20
Chao Huang, Hesheng Luo
The cancer suppressor gene, testis-specific protein Y-encoded-like 5 (TSPYL5), has been implicated in various cancers, including colorectal cancer (CRC). In this study, we investigated the role of TSPYL5 in the development of CRC in vitro. First, we used bioinformatics to predict the binding target of TSPYL5, and found that the microRNA, miR-19-5p, bound to the 3' untranslated region (UTR) of TSPYL5. This interaction was further validated by the dual-luciferase assay. Second, we found that overexpressed TSPYL5 enhanced apoptosis in HT29 cells and reduced cell proliferation, reduced cell migration/invasion, and most of the cells accumulated in the G0/G1 phase of the cell cycle...
December 14, 2017: DNA and Cell Biology
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