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Colorectal cancer microRNA

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https://www.readbyqxmd.com/read/28791386/microrna%C3%A2-630-promotes-cell-proliferation-and-inhibits-apoptosis-in-the-hct116-human-colorectal-cancer-cell-line
#1
Lijuan Zhang, Gang Feng, Xinyan Zhang, Yawen Ding, Xiaojuan Wang
Dysregulation of microRNAs (miRNAs) in colorectal cancer provides important opportunities for the development of future miRNA‑based therapies. The present study aimed to assess the role of miRNA‑630 (miR‑630) expression in colorectal cancer. HCT116 human colorectal cancer cells were transfected with miR‑630 inhibitor, mimic or control miRNA, and the effects of miR‑630 dysregulation on cell viability, proliferation and apoptosis were analyzed using MTT and bromodeoxyuridine assays, and an annexin V‑fluorescein isothiocyanate cell apoptosis kit, respectively...
August 3, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28771881/microrna-219-5p-inhibits-epithelial-mesenchymal-transition-and-metastasis-of-colorectal-cancer-by-targeting-lef1
#2
Lan-Xuan Huang, Chun-Yan Hu, Li Jing, Min-Cong Wang, Meng Xu, Jing Wang, Yu Wang, Ke-Jun Nan, Shu-Hong Wang
Aberrant expression of microRNAs (miRs) has been shown to play a critical role in the pathogenesis and progression of tumors. miR-219-5p has been reported to be abnormally expressed in some types of human tumors. However, the mechanism between miR-219-5p and colorectal cancer (CRC) metastasis remains unclear. In this study, miR-219-5p was found to be downregulated in CRC tissue compared with matched normal tissue. Through luciferase reporter assay, we demonstrated lymphoid enhancer-binding factor 1 (LEF1) as a direct target of miR-219-5p...
August 3, 2017: Cancer Science
https://www.readbyqxmd.com/read/28771442/oncomir-17-5p-alarm-signal-in-cancer
#3
REVIEW
Madhusudhan Reddy Bobbili, Robert M Mader, Johannes Grillari, Hanna Dellago
Soon after microRNAs entered the stage as novel regulators of gene expression, they were found to regulate -and to be regulated by- the development, progression and aggressiveness of virtually all human types of cancer. Therefore, miRNAs in general harbor a huge potential as diagnostic and prognostic markers as well as potential therapeutic targets in cancer.The miR-17-92 cluster was found to be overexpressed in many human cancers and to promote unrestrained cell growth, and has therefore been termed onco-miR-1...
July 18, 2017: Oncotarget
https://www.readbyqxmd.com/read/28767429/systematic-literature-review-and-clinical-validation-of-circulating-micrornas-as-diagnostic-biomarkers-for-colorectal-cancer
#4
Cheng Pan, Xuebing Yan, Hao Li, Linsheng Huang, Mingming Yin, Yongzhi Yang, Renyuan Gao, Leiming Hong, Yanlei Ma, Chenzhang Shi, Huanlong Qin, Peng Zhang
Because patients with colorectal cancer (CRC) are usually diagnosed at an advanced stage and current serum tumor markers have limited diagnostic efficacy, there is an urgent need to identify reliable diagnostic biomarkers. To better define the diagnostic potential of microRNAs (miRNAs) for CRC, we performed a comprehensive evaluation of reported circulating CRC miRNA markers. After a systematic literature review, we selected 30 candidate miRNAs and used quantitative real-time polymerase chain reaction to examine their expression in a training cohort of 120 plasma samples (CRC vs healthy controls (HC) = 60:60)...
July 18, 2017: Oncotarget
https://www.readbyqxmd.com/read/28767179/upregulation-of-microrna-135b-and-microrna-182-promotes-chemoresistance-of-colorectal-cancer-by-targeting-st6galnac2-via-pi3k-akt-pathway
#5
Bing Liu, Yanfeng Liu, Lifen Zhao, Yue Pan, Yujia Shan, Yang Li, Li Jia
MicroRNAs (miRNAs) are increasingly involved in the development of drug resistance, including 5-fluorouracil (5-FU) resistance in colorectal cancer (CRC). Aberrant sialylation is correlated with human CRC. The study was to explore whether miR-135b and miR-182 modulated 5-FU chemoresistance of CRC by targeting ST6GALNAC2 via PI3K/AKT pathway. MiR-135b and miR-182 were found to be up-regulated in CRC tissues and 5-FU resistant CRC cell lines. Forced miR-135b and miR-182 expression also affected ST6GALNAC2 levels...
August 2, 2017: Molecular Carcinogenesis
https://www.readbyqxmd.com/read/28765946/histone-demethylase-phf8-accelerates-the-progression-of-colorectal-cancer-and-can-be-regulated-by-mir-488-in%C3%A2-vitro
#6
Yao Lv, Yan Shi, Quanli Han, Guanghai Dai
Plant homeo domain finger protein 8 (PHF8), as an oncogene, has been highlighted in cancer development and progression. However, its clinical significance and underlying molecular mechanisms in colorectal cancer (CRC) remain to be fully elucidated. In the present study, the role of PHF8 in the progression of CRC was investigated. The mRNA and protein levels of PHF8 in tissues from patients with CRC and cell lines were detected using the reverse transcription-quantitative polymerase chain reaction and western blotting, respectively...
August 1, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28765596/a-polymorphism-in-abcc4-is-related-to-efficacy-of-5-fu-capecitabine-based-chemotherapy-in-colorectal-cancer-patients
#7
Qi Chen, Fanyi Meng, Lei Wang, Yong Mao, Huan Zhou, Dong Hua, Hongjian Zhang, Weipeng Wang
To investigate the association of microRNA (miRNA) binding-site polymorphisms in the drug transporter genes with the efficacy of 5-Fluorouracil (5-FU)/capecitabine-based chemotherapy in colorectal cancer (CRC), 6 polymorphisms were determined in 432 CRC patients by using DNA sequencing method. The impacts of the polymorphisms on the miRNA-mediated regulation of gene expression were evaluated by using the methods including quantitative real-time PCR, western blotting, and luciferase reporter assays. The effects of miRNA on the intracellular concentration and cytotoxicity of 5-FU in CRC cells were measured by high performance liquid chromatography conjected tandem mass spectrometry (HPLC-MS/MS) and MTT methods, respectively...
August 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28753429/fusobacterium-nucleatum-promotes-chemoresistance-to-colorectal-cancer-by-modulating-autophagy
#8
TaChung Yu, Fangfang Guo, Yanan Yu, Tiantian Sun, Dan Ma, Jixuan Han, Yun Qian, Ilona Kryczek, Danfeng Sun, Nisha Nagarsheth, Yingxuan Chen, Haoyan Chen, Jie Hong, Weiping Zou, Jing-Yuan Fang
Gut microbiota are linked to chronic inflammation and carcinogenesis. Chemotherapy failure is the major cause of recurrence and poor prognosis in colorectal cancer patients. Here, we investigated the contribution of gut microbiota to chemoresistance in patients with colorectal cancer. We found that Fusobacterium (F.) nucleatum was abundant in colorectal cancer tissues in patients with recurrence post chemotherapy, and was associated with patient clinicopathological characterisitcs. Furthermore, our bioinformatic and functional studies demonstrated that F...
July 27, 2017: Cell
https://www.readbyqxmd.com/read/28751193/microrna-33a-and-let-7e-inhibit-human-colorectal-cancer-progression-by-targeting-st8sia1
#9
Yujia Shan, Yuejian Liu, Lifen Zhao, Bing Liu, Yang Li, Li Jia
Colorectal cancer (CRC) is one of the leading causes of cancer mortality worldwide. Aberrant sialylation is crucially involved in the progression of various types of cancer. MicroRNAs (miRNAs) have been broadly studied in cancer. MicroRNA-33a (miR-33a) and Has-let-7e (let-7e) are non-coding RNA that can reduce cell motility and viability in cancer. In this study, miR-33a and let-7e levels were confirmed to be significantly down-regulated in CRC samples (n=32) and drug resistant cell line (HCT-8/5-FU) compared with those in the matched adjacent tissues and drug sensitivity cell line (HCT-8)...
July 24, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/28749470/mir-181d-and-c-myc-mediated-inhibition-of-cry2-and-fbxl3-reprograms-metabolism-in-colorectal-cancer
#10
Xiaofeng Guo, Yuekun Zhu, Xinya Hong, Mukun Zhang, Xingfeng Qiu, Zhenfa Wang, Zhongquan Qi, Xuehui Hong
Colorectal cancer (CRC) is the second major cause of tumor-related deaths. MicroRNAs (miRNAs) have pivotal roles in CRC progression. Here, we describe the effect of miR-181d on CRC cell metabolism and underlying molecular mechanism. Our data firmly demonstrated that knockdown of miR-181d suppressed CRC cell proliferation, migration, and invasion by impairing glycolysis. Mechanistically, miR-181d stabilized c-myc through directly targeting the 3'-UTRs of CRY2 and FBXL3, which subsequently increased the glucose consumption and the lactate production...
July 27, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28748218/autophagy-regulated-by-mirnas-in-colorectal-cancer-progression-and-resistance
#11
Andrew Fesler, Hua Liu, Ning Wu, Fei Liu, Peixue Ling, Jingfang Ju
The catabolic process of autophagy is an essential cellular function that allows for the breakdown and recycling of cellular macromolecules. In recent years, the impact of epigenetic regulation of autophagy by non-coding microRNAs (miRNAs) has been recognized in human cancer. In colorectal cancer, Autophagy plays critical roles in cancer progression as well as resistance to chemotherapy, and recent evidence demonstrates that miRNAs are directly involved in mediating these functions. In this review, we will focus on the recent advancements in the field of miRNA regulation of autophagy in colorectal cancer...
2017: Cancer Translational Medicine
https://www.readbyqxmd.com/read/28747561/mir-133b-suppresses-metastasis-by-targeting-hoxa9-in-human-colorectal-cancer
#12
Xiao Wang, Juyuan Bu, Xingwei Liu, Wenfeng Wang, Weihua Mai, Baojun Lv, Jinlin Zou, Xiangqiong Mo, Xiaoling Li, Jingyu Wang, Bin Niu, Yunping Fan, Bingzong Hou
Functions and mechanisms of microRNA (miRNA) involved in colorectal cancer (CRC) metastasis are largely unknown. Here, a miRNA microarray analysis was performed in CRC primary tissues and metastatic hepatic tissues to disclose crucial miRNA involved in CRC metastasis. MiR-133b was decreased and negatively correlated with metastasis in CRC. Overexpression of miR-133b significantly suppressed metastasis of CRC in vitro and in vivo. HOXA9 was identified as a direct and functional target of miR-133b. In addition, HOXA9 was negatively correlated with miR-133b and promoted CRC malignant progress...
July 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/28742699/understanding-and-resetting-radiation-sensitivity-in-rectal-cancer
#13
Katherine A Kelley, Rebecca A Ruhl, Shushan R Rana, Elizabeth Dewey, Cristina Espinosa, Charles R Thomas, Robert G Martindale, Sudarshan Anand, Vassiliki L Tsikitis
OBJECTIVE: The aim of the study was to explore specific microRNAs (miRs) in rectal cancer that would predict response to radiation and identify target pathways that may be exploited for neoadjuvant therapies. SUMMARY BACKGROUND DATA: Chemoradiotherapy (CRT) response is a predictor of survival in rectal cancer. Studies have demonstrated changes in RNA expression correlate with chemoradiation sensitivity across cancers. METHODS: Forty-five rectal cancer patients, partial responders (PR = 18), nonresponders (NR = 13), and complete responders (CR = 14) to CRT, as defined by a tumor regression score, were examined...
July 24, 2017: Annals of Surgery
https://www.readbyqxmd.com/read/28739727/mir-141-inhibits-proliferation-and-migration-of-colorectal-cancer-sw480-cells
#14
Zhi H Long, Zhi G Bai, Jian N Song, Zhi Zheng, Jun Li, Jun Zhang, Jun Cai, Hong W Yao, Jin Wang, Ying C Yang, Jie Yin, Zhong T Zhang
BACKGROUND: This study was designed to determine the molecular function of miR-141 and the underlying mechanisms in colorectal cancer (CRC). MATERIALS AND METHODS: SW480 cells in which miR-141 was up- or down-regulated were established. Reverse transcription, quantitative polymerase chain reaction and Western blotting were used to examine the microRNA and protein expression. Cell-cycle progression was analyzed by flow cytometry. Proliferation marker Ki-67 was evaluated by immunofluorescence...
August 2017: Anticancer Research
https://www.readbyqxmd.com/read/28738328/a-novel-role-for-mir-520a-3p-in-regulating-egfr-expression-in-colorectal-cancer
#15
Rui Zhang, Rui Liu, Chang Liu, Yahan Niu, Jianguo Zhang, Baoliang Guo, Chen-Yu Zhang, Jing Li, Jie Yang, Xi Chen
BACKGROUND/AIMS: MicroRNAs (miRNAs) have been consistently demonstrated to be involved in colorectal cancer as either tumour oncogenes or tumour suppressors. However, the detailed role of miR-520a-3p in colorectal cancer remains poorly understood. METHODS: Quantitative RT-PCR and western blotting assays were used to measure miR-520a-3p and EGFR expression levels in colorectal cancer tissues, respectively. Luciferase reporter assay was employed to validate the direct targeting of EGFR by miR-520a-3p...
July 24, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28721656/circrna-a-novel-type-of-biomarker-for-cancer
#16
REVIEW
He-da Zhang, Lin-Hong Jiang, Da-Wei Sun, Jun-Chen Hou, Zhen-Ling Ji
Circular RNAs (circRNAs) are a class of long, non-coding RNAs molecules that shape a covalently closed continuous loop which have no 5'-3' polarity and contain no polyA tail. CircRNAs also possess relatively jarless framework and are highly tissue-specific expressed in the eukaryotic transcriptome. Emerging evidences have discovered that thousands of endogenous circRNAs are present in mammalian cells and they mediate gene expression at the transcriptional or post-transcriptional level by binding to microRNAs or other molecules and then inhibit their function...
July 18, 2017: Breast Cancer: the Journal of the Japanese Breast Cancer Society
https://www.readbyqxmd.com/read/28714940/non-coding-rnas-as-predictive-biomarkers-to-current-treatment-in-metastatic-colorectal-cancer
#17
REVIEW
Ingrid Garajová, Manuela Ferracin, Elisa Porcellini, Andrea Palloni, Francesca Abbati, Guido Biasco, Giovanni Brandi
The onset and selection of resistant clones during cancer treatment with chemotherapy or targeted therapy is a major issue in the clinical management of metastatic colorectal cancer patients. It is possible that a more personalized treatment selection, using reliable response-to-therapy predictive biomarkers, could lead to an improvement in the success rate of the proposed therapies. Although the process of biomarker selection and validation could be a long one, requiring solid statistics, large cohorts and multicentric validations, non-coding RNAs (ncRNAs) and in particular microRNAs, proved to be extremely promising in this field...
July 17, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28714414/role-of-mirna-in-lung-cancer-potential-biomarkers-and-therapies
#18
Xiaohong Du, Jitai Zhang, Juping Wang, Xiaoming Lin, Feng Ding
MicroRNAs (miRNAs) are small noncoding RNAs, which downregulate gene expression by repressing or degrading mRNA targets. Lung cancer (LC), together with liver and colorectal cancers are the three leading causes of cancer death worldwide, and 80% of LCs belong to non-small cell lung cancers (NSCLCs). Despite a great advancement in developing distinct and delicate tools for early diagnosis and targeted therapies over the last decade, only about 15% of the NSCLC patients eventually survived. MiRNAs are frequently dysregulated in carcinoma, including LC...
July 14, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28714375/the-association-of-mir-126-3p-mir-126-5p-and-mir-664-3p-expression-profiles-with-outcomes-of-patients-with-metastatic-colorectal-cancer-treated-with-bevacizumab
#19
Ondrej Fiala, Pavel Pitule, Petr Hosek, Vaclav Liska, Ondrej Sorejs, Jan Bruha, Ondrej Vycital, Tomas Buchler, Alexandr Poprach, Ondrej Topolcan, Jindrich Finek
MicroRNAs regulate the expression of genes involved in several important cancer-related processes including cell adhesion, proliferation, and tumour angiogenesis. Bevacizumab is routinely used in the treatment of patients with metastatic colorectal cancer, but, so far, no reliable biomarker predicting response to bevacizumab has been established. The aim of our retrospective study was to evaluate the association of miR-126-3p, miR-126-5p and miR-664-3p tumour expression levels with outcomes of patients with metastatic colorectal cancer treated with bevacizumab...
July 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28713966/spica-prunellae-extract-suppresses-the-growth-of-human-colon-carcinoma-cells-by-targeting-multiple-oncogenes-via-activating-mir-34a
#20
Yi Fang, Ling Zhang, Jianyu Feng, Wei Lin, Qiaoyan Cai, Jun Peng
Spica Prunellae is the spike of the herb Prunella vulgaris L. in traditional Chinese medicine which is often used for the treatment of various cancers including colorectal cancer. In the present study, we found that a key tumor suppressor, microRNA-34a (miR-34a) is involved in the antitumor activity for Spica Prunellae. Human colon carcinoma HCT-8 cells treated with an ethanol extract of Spica Prunellae (EESP) had significantly decreased cell proliferation and viability, in a dose-dependent manner. Flow cytometry analysis with Annexin V/PI staining analysis revealed that EESP treatment could induce apoptosis of HCT-8 cells...
July 6, 2017: Oncology Reports
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