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https://www.readbyqxmd.com/read/29239816/mir-9-5p-promotes-cell-growth-and-metastasis-in-non-small-cell-lung-cancer-through-the-repression-of-tgfbr2
#1
Gang Li, Fang Wu, Han Yang, Xia Deng, Yawei Yuan
BACKGROUND: Increasing evidence indicates that the dysregulation of microRNAs (miRNAs) play critical roles tumor progression and metastasis, but very few papers had reported the function of miR-9-5p in lung cancer, especially in NSCLCs. METHODS: In this study, we investigated the role of miR-9-5p in non-small cell lung cancers (NSCLCs). MiR-9-5p level were analyzed in 62 clinical NSCLC lung tissue samples and adjacent normal lung tissues by RT-PCR. The target of miR-9-5p was predicted by TargetScan and luciferase reporter assay was used to verify the binding site of miR-9-5p on TGFBR2 mRNA...
November 24, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29238200/microrna-211-promotes-non-small-cell-lung-cancer-proliferation-and-invasion-by-targeting-mxa
#2
Mafei Kang, Jieqiong Shi, Na Peng, Shaozhong He
Recent studies have shown that microRNAs play a pivotal role in the pathogenesis of cancer. In our current study, the expression levels of microRNA-211 (miR-211) were measured in human non-small-cell lung cancer (NSCLC) tissues and cell lines. We found that miR-211 expression levels were increased in NSCLC tissues and cell lines and that the overexpression of miR-211 promotes cell proliferation and invasion. Using bioinformatics, we demonstrated that miR-211 binds to the 3'-untranslated region of MxA and overexpression of miR-211 suppresses the expression of MxA at both the transcriptional and translational levels in NSCLC cell lines...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/29237428/nkx2-1-expression-as-a-prognostic-marker-in-early-stage-non-small-cell-lung-cancer
#3
Jorge Moisés, Alfons Navarro, Sandra Santasusagna, Nuria Viñolas, Laureano Molins, José Ramirez, Jeisson Osorio, Adela Saco, Joan Josep Castellano, Carmen Muñoz, Sara Morales, Mariano Monzó, Ramón María Marrades
BACKGROUND: NKX2-1, a key molecule in lung development, is highly expressed in non-small cell lung cancer (NSCLC), particularly in lung adenocarcinoma (ADK), where it is a diagnostic marker. Studies of the prognostic role of NKX2-1 in NSCLC have reported contradictory findings. Two microRNAs (miRNAs) have been associated with NKX2-1: miR-365, which targets NKX2-1; and miR-33a, which is downstream of NKX2-1. We have examined the effect of NKX2-1, miR-365 and miR-33a on survival in a cohort of early-stage NSCLC patients and in sub-groups of patients classified according to the mutational status of TP53, KRAS, and EGFR...
December 13, 2017: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/29237393/micrornas-downregulation-in-cancer-is-associated-with-guanine-enrichment-in-the-terminal-loop-sequences-of-their-precursors
#4
Amit Cohen, Mario Alberto Burgos-Aceves, Yoav Smith
A global repression in microRNA (miRNA) expression is a phenomenon observed in different types of cancer. Herein, we show an association of miRNAs downregulation in cancer, with guanine (G) enrichment in the terminal loop sequences of their precursors. High G (and GG) content was mostly found in repressed miRNAs of breast, lung and ovary cancers, predominantly in poorly differentiated tumors. The mature sequences of repressed miRNAs had significantly low G level and were enriched with an ACA motif. These results suggest a new link between G enrichment of precursor miRNAs terminal loops and carcinogenesis, and the possible association of specific sequence motifs with the regulation of their expression...
December 13, 2017: MicroRNA
https://www.readbyqxmd.com/read/29237164/mir-124-inhibits-growth-and-enhances-radiation-induced-apoptosis-in-non-small-cell-lung-cancer-by-inhibiting-stat3
#5
Mengjie Wang, Bi Meng, Yangchen Liu, Jingwen Yu, Qiaoyun Chen, Yangchen Liu
BACKGROUND/AIMS: A growing body of evidence indicates that the abnormal expression of microRNAs (miRNAs) play an important role in sensitizing the cellular response to ionizing radiation (IR). The aim of this study was to investigate whether the expression of miR-124 correlated with radiosensitivity in the context of non-small-cell lung carcinoma (NSCLC). METHODS: Quantitative reverse transcription polymerase chain reaction (RT-PCR) was used to quantify miR-124 expression in NSCLC tissues and cell lines...
December 11, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29236960/microrna-128-3p-mediated-depletion-of-drosha-promotes-lung-cancer-cell-migration
#6
Tania Frixa, Andrea Sacconi, Mario Cioce, Giuseppe Roscilli, Fabiana Fosca Ferrara, Luigi Aurisicchio, Claudio Pulito, Stefano Telera, Maria Antonia Carosi, Paola Muti, Sabrina Strano, Sara Donzelli, Giovanni Blandino
Alteration in microRNAs (miRNAs) expression is a frequent finding in human cancers. In particular, widespread miRNAs down-regulation is a hallmark of malignant transformation. In the present report, we showed that the miR-128-3p, which is up-regulated in lung cancer tissues, has Drosha and Dicer, two key enzymes of miRNAs processing, as the main modulation targets leading to the widespread down-regulation of miRNA expression. We observed that the miRNAs downregulation induced by miR-128-3p contributed to the tumorigenic properties of lung cancer cells...
December 11, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/29231270/profiling-and-characterization-of-micrornas-responding-to-sodium-butyrate-treatment-in-a549-cells
#7
Xiaoqiang Xiao, Yingjie Cao, Haoyu Chen
Butyrate inhibits growth of lung cancer. However, the molecular mechanism is still unclear. Here we profiled miRNAs that responded to sodium butyrate(NaB) stimulation in A549 cells, a non-small cell lung cancer cell line, using microarray. We found 33 up-regulated microRNAs and 22 down-regulated microRNAs (log2≥1.5 folds, P-value<0.05). The expression of miR-3935, miR-574-3p and miR-494-3p was confirmed by realtime qPCR. Then,we explored their potential targets of miR-574-3p and miR-494-3p using long noncoding RNA(LncRNA) microarray...
December 12, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29229885/mir-876-5p-suppresses-epithelial-mesenchymal-transition-of-lung-cancer-by-directly-down-regulating-bone-morphogenetic-protein-4
#8
Liang Bao, Lei Lv, Jinping Feng, Yuyu Chen, Xinhua Wang, Shuguang Han, Hongqing Zhao
Lung cancer is the leading cause of cancer-related death throughout the world. We aimed to investigate the role of a novel microRNA-876-5p and its potential molecular target bone morphogenetic protein 4 (BMP-4), in the epithelial-mesenchymal transition (EMT) of lung cancer. Expressions of microRNA-876-5p and its potential target BMP-4 were analysed in lung cancer cells and patient tissues. Luciferase activity assay was conducted to verify direct targeting of microRNA- 876-5p to the 3'-UTR of BMP-4 mRNA. Migration, invasion capacities of lung cancer cells expressing microRNA-876-5p were analysed, and characteristics of lung cancer EMT protein markers were also evaluated...
December 2017: Journal of Biosciences
https://www.readbyqxmd.com/read/29223555/emerging-roles-of-circular-rna-hsa_circ_0000064-in-the-proliferation-and-metastasis-of-lung-cancer
#9
Yan-Hong Luo, Xiang-Zhi Zhu, Ke-Wei Huang, Qian Zhang, Yan-Xin Fan, Peng-Wei Yan, Jing Wen
Circular RNAs (circRNAs), a novel class of widespread and diverse endogenous RNAs, can regulate gene expression in mammals. CircRNAs have recently been identified as microRNA sponges and involved in the development of some human diseases. However, the role of circRNAs in the process of tumorigenesis and development of lung cancer remains vague. The purpose of this study is to investigate the role of circRNAs in the lung cancer. In this study, we chose hsa_circ_0000064 as a targeted circRNA to investigate its clinical significances in lung cancer patients...
December 6, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29218272/blood-based-biomarkers-in-lung-cancer-prognosis-and-treatment-decisions
#10
REVIEW
Meng Xu-Welliver, David P Carbone
Despite recent advances, non-small cell lung cancer (NSCLC) remains a devastating disease with overall poor prognosis. Major contributing factors include obstacles to diagnosing the disease early in its course during the asymptomatic stage as well as diversity and complexity of its biology underlying tumorigenesis and tumor progression. Advances in molecularly targeted therapies which drives the development of personalized cancer care require precise and comprehensive understanding of tumor biology, not only at the time of diagnosis but also during treatment course and surveillance...
December 2017: Translational Lung Cancer Research
https://www.readbyqxmd.com/read/29218268/blood-based-tumor-biomarkers-in-lung-cancer-for-detection-and-treatment
#11
REVIEW
Hirva Mamdani, Shahid Ahmed, Samantha Armstrong, Tony Mok, Shadia I Jalal
The therapeutic landscape of lung cancer has expanded significantly over the past decade. Advancements in molecularly targeted therapies, strategies to discover and treat resistance mutations, and development of personalized cancer treatments in the context of tumor heterogeneity and dynamic tumor biology have made it imperative to obtain tumor samples on several different occasions through the course of patient treatment. While this approach is critical to the delivery of optimal cancer treatment, it is fraught with a number of barriers including the need for invasive procedures with associated complications, access to limited amount of tissue, logistical delays in obtaining the biopsy, high healthcare cost, and in many cases inability to obtain tissue because of technically difficult location of the tumor...
December 2017: Translational Lung Cancer Research
https://www.readbyqxmd.com/read/29212284/systematic-review-and-critique-of-circulating-mirnas-as-biomarkers-of-stage-i-ii-non-small-cell-lung-cancer
#12
REVIEW
Francesca Moretti, Paola D'Antona, Emanuele Finardi, Marco Barbetta, Lorenzo Dominioni, Albino Poli, Elisabetta Gini, Douglas M Noonan, Andrea Imperatori, Nicola Rotolo, Maria Cattoni, Paola Campomenosi
Selected circulating microRNAs (miRNAs) have been suggested for non-invasive screening of non-small cell lung cancer (NSCLC), however the numerous proposed miRNA signatures are inconsistent. Aiming to identify miRNAs suitable specifically for stage I-II NSCLC screening in serum/plasma samples, we searched the databases "Pubmed", "Medline", "Scopus", "Embase" and "WOS" and systematically reviewed the publications reporting quantitative data on the efficacy [sensitivity, specificity and/or area under the curve (AUC)] of circulating miRNAs as biomarkers of NSCLC stage I and/or II...
November 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/29208177/human-haematological-and-epithelial-tumor-derived-cell-lines-express-distinct-patterns-of-onco-micrornas
#13
Flavia Biamonte, Fabiana Zolea, Gianluca Santamaria, Anna M Battaglia, Giovanni Cuda, Francesco Costanzo
MicroRNAs post-transcriptionally regulate gene expression thus playing a critical role in a wide range of physiological and pathological processes, including cancer initiation and progression. Moreover, a growing number of evidences highlights that miRNAs themselves are differentially expressed between normal and malignant tissues. In this study, we analysed differences in miRNA expression profile between haematological and epithelial tumor-derived cell lines and explored their role in definying different cancer cells phenotypes...
November 30, 2017: Cellular and Molecular Biology
https://www.readbyqxmd.com/read/29207642/crosstalk-in-competing-endogenous-rna-network-reveals-the-complex-molecular-mechanism-underlying-lung-cancer
#14
Xiang Jin, Yinghui Guan, Hui Sheng, Yang Liu
We investigated the transcriptional mechanism underlying lung cancer development. RNA sequencing analysis was performed on blood samples from lung cancer cases and healthy controls. Differentially expressed microRNAs (miRNAs), circular RNAs (circRNAs), mRNAs (genes), and long non-coding RNAs (lncRNA) were identified, followed by pathway enrichment analysis. Based on miRNA target interactions, a competing endogenous network was established and significant nodes were screened. Differentially expressed transcriptional factors were retrieved from the TRRUST database and the transcriptional factor regulatory network was constructed...
October 31, 2017: Oncotarget
https://www.readbyqxmd.com/read/29207105/microrna-363-3p-inhibits-cell-growth-and-invasion-of-non%C3%A2-small-cell-lung-cancer-by-targeting-hmga2
#15
Chuanfu Jiang, Yang Cao, Ting Lei, Yu Wang, Junfeng Fu, Ze Wang, Zhenyang Lv
Lung cancer is the second most common cancer and is the leading cause of cancer-related death worldwide. For decades, increasing evidence revealed that microRNAs may contribute to non‑small cell lung cancer (NSCLC) carcinogenesis and progression and could provide novel therapeutic targets for treatments of patients with NSCLC. Accumulated studies indicate that microRNA (miR)‑363‑3p serves important roles in tumorigenesis and tumor development; however, the role of miR‑363‑3p in NSCLC is still unclear...
November 22, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29204818/mir-513a-3p-contributes-to-the-controlling-of-cellular-migration-processes-in-the-a549-lung-tumor-cells-by-modulating-integrin-%C3%AE-8-expression
#16
Marina Bonfogo da Silveira, Kelvin Furtado Lima, Andrea Renata da Silva, Robson Augusto Souza Dos Santos, Karen C M Moraes
Lung tumors are a frequent type of cancer in humans and a leading cause of death, and the late diagnostic contributes to high mortality rates. New therapeutic strategies are needed, and the heptapeptide angiotensin-(1-7) [ang-(1-7)] demonstrated the ability to control cancer growth rates and migration in vitro and in vivo. However, the possible use of the heptapeptide in clinical trials demands deeper analyses to elucidate molecular mechanisms of its effect in the target cells. In this study, we investigated relevant elements that control pro-inflammatory environment and cellular migration, focusing in the post-transcription mechanism using lung tumor cell line...
December 4, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/29204322/diagnosis-value-of-aberrantly-expressed-microrna-profiles-in-lung-squamous-cell-carcinoma-a-study-based-on-the-cancer-genome-atlas
#17
Sheng Yang, Jing Sui, Geyu Liang
Background: Lung cancer is considered as one of the most frequent and deadly cancers with high mortality all around the world. It is critical to find new biomarkers for early diagnosis of lung cancer, especially lung squamous cell carcinoma (LUSC). The Cancer Genome Atlas (TCGA) is a database which provides both cancer and clinical information. This study is a comprehensive analysis of a novel diagnostic biomarker for LUSC, based on TCGA. Methods and Results: The present study investigated LUSC-specific key microRNAs (miRNAs) from large-scale samples in TCGA...
2017: PeerJ
https://www.readbyqxmd.com/read/29197876/mir-106b-5p-promotes-proliferation-and-inhibits-apoptosis-by-regulating-btg3-in-non-small-cell-lung-cancer
#18
Ke Wei, Chunfeng Pan, Guoliang Yao, Bin Liu, Teng Ma, Yang Xia, Wei Jiang, Liang Chen, Yijiang Chen
BACKGROUND/AIMS: MicroRNAs have been validated to play a crucial role in tumorigenesis of non-small cell lung cancer (NSCLC). Although miR-106b-5p has been reported to play a vital role in various malignancies the physiological function of miR-106b-5p in NSCLC still remain unknown. In this study, we investigated the role of miR-106b-5p in NSCLC. METHODS: Quantitative real-time polymerase chain reaction was conducted to estimate the expression of miR-106b-5p and BTG3 in both NSCLC tissues and cell lines...
December 4, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29197663/prediction-of-potential-drivers-connecting-different-dysfunctional-levels-in-lung-adenocarcinoma-via-a-protein-protein-interaction-network
#19
Fei Yuan, WenCong Lu
Lung cancer is a serious disease that threatens an affected individual's life. Its pathogenesis has not yet to be fully described, thereby impeding the development of effective treatments and preventive measures. "Cancer driver" theory considers that tumor initiation can be associated with a number of specific mutations in genes called cancer driver genes. Four omics levels, namely, (1) methylation, (2) microRNA, (3) mutation, and (4) mRNA levels, are utilized to cluster cancer driver genes. In this study, the known dysfunctional genes of these four levels were used to identify novel driver genes of lung adenocarcinoma, a subtype of lung cancer...
November 29, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29190968/genetic-variation-at-the-microrna-binding-site-of-cav1-gene-is-associated-with-lung-cancer-susceptibility
#20
Xue Fang, Xuelian Li, Zhihua Yin, Lingzi Xia, Xiaowei Quan, Yuxia Zhao, Baosen Zhou
Single nucleotide polymorphism (SNP) may influence the genesis and development of cancer in a variety of ways depending on their location. Here we conducted a study in Chinese female non-smokers to investigate the relationship between rs1049337, rs926198 and the risk or survival of lung cancer. Further, we explored whether rs1049337 could alter the binding affinity between the mRNA of CAV1 and the corresponding microRNAs. Finally, we evaluated the relationship between expression level of CAV1 and prognosis of lung cancer...
November 3, 2017: Oncotarget
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