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https://www.readbyqxmd.com/read/29445170/brm270-inhibits-cancer-stem-cell-maintenance-via-microrna-regulation-in-chemoresistant-a549-lung-adenocarcinoma-cells
#1
Taeho Kwon, Nisansala Chandimali, Do Luong Huynh, Jiao Jiao Zhang, Nameun Kim, Yesol Bak, Do-Young Yoon, Dae-Yeul Yu, Jae Cheol Lee, Meeta Gera, Mrinmoy Ghosh, Yang Ho Park, Dong Kee Jeong
Chemotherapy is a standard treatment for non-small-cell lung cancer (NSCLC). However, the dose-limiting toxicity of drugs and the development of chemoresistance are major clinical challenges to successful management of NSCLC. Asian traditional medicine is gaining global attention as a non-toxic alternative to chemotherapy. BRM270 is an extract formulated from seven Asian medicinal plants that has been shown to inhibit tumor cell proliferation in diverse cancer types. We previously demonstrated that BRM270 suppresses tumorigenesis by negatively regulating nuclear factor-κB signaling in multidrug-resistant cancer stem cells (CSCs)...
February 14, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29445125/pin1-impairs-microrna-biogenesis-by-mediating-conformation-change-of-xpo5-in-hepatocellular-carcinoma
#2
Jiao Li, Wenchen Pu, Hui-Lung Sun, Jian-Kang Zhou, Xin Fan, Yuanyuan Zheng, Juan He, Xuesha Liu, Zhichu Xia, Lunxu Liu, Yu-Quan Wei, Yong Peng
MicroRNA (miRNA) dysregulation is associated with the tumorigenesis and development of numerous human cancers. The defect in miRNA biogenesis is the main cause of miRNA dysregulation. We previously demonstrated that ERK-induced phosphorylation of XPO5 followed by peptidyl-prolyl cis/trans isomerase Pin1-mediated isomerization downregulates miRNA expression and contributes to hepatocellular carcinoma (HCC) development. However, how Pin1 precisely regulates miRNA biogenesis in HCC remains elusive. Here we reveal that Pin1 has a pivotal role in the miRNA maturation process by modulating phosphorylated Serine-Proline (pS-P) motif of XPO5 in a phosphorylation-dependent manner...
February 14, 2018: Cell Death and Differentiation
https://www.readbyqxmd.com/read/29439651/serum-and-blood-based-biomarkers-for-lung-cancer-screening-a-systematic-review
#3
Gavin C W Chu, Kim Lazare, Frank Sullivan
BACKGROUND: Lung cancer is the second most common cancer and the leading cause of cancer death for both men and women. Although low-dose CT (LDCT) is recommended for lung cancer screening in high-risk populations and may decrease lung cancer mortality, there is a need to improve the accuracy of lung cancer screening to decrease over-diagnosis and morbidity. Blood and serum-based biomarkers, including EarlyCDT-lung and microRNA based biomarkers, are promising adjuncts to LDCT in lung cancer screening...
February 13, 2018: BMC Cancer
https://www.readbyqxmd.com/read/29437031/underexpression-of-mir-486-5p-but-not-overexpression-of-mir-155-is-associated-with-lung-cancer-stages
#4
Marwa A Mohamed, Ehab I Mohamed, Samir A Abd El-Kaream, Mohamed I Badawi, Samy H Darwish
BACKGROUND: Evidence is increasing that microRNAs (miR) are particularly important in lung homeostasis and development and have been shown to be involved in many pulmonary diseases such as asthma, chronic obstructive pulmonary disease, sarcoidosis, lung cancer (LC) and other smoking-related diseases. OBJECTIVE: The objective of this study was to investigate the expression of miR-155 and miR-486-5p in tissues from LC patients and healthy endobronchial mucosa as prognostic biomarkers for diagnosing LC...
February 12, 2018: MicroRNA
https://www.readbyqxmd.com/read/29435942/identification-and-isolation-of-novel-sugar-like-rna-protecting-materials-glycylglycerins-from-pluripotent-stem-cells
#5
Shi-Lung Lin
Pluripotent stem cells are a resourceful treasure box for regenerative medicine. They contain a large variety of novel materials useful for designing and developing new medicines and therapies directed against many aging-associated degenerative disorders, including Alzheimer's disease, Parkinson's disease, stroke, diabetes, osteoporosis, and cancers. Currently, identification of these novel stem cell-specific materials is one of major breakthroughs in the field of stem cell research. Particularly, since the discovery of induced pluripotent stem cells (iPSC) in year 2006, the methods of iPSC derivation further provide an unlimited resource for screening, isolating, and even producing theses novel stem cell-specific materials in vitro...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29435940/mechanism-and-method-for-generating-tumor-free-ips-cells-using-intronic-microrna-mir-302-induction
#6
Shi-Lung Lin, Shao-Yao Ying
Today's researchers generating induced pluripotent stem cells (iPS cells or iPSCs) usually consider their pluripotency rather than potential tumorigenicity. Oncogenic factors such as c-Myc and Klf4 are frequently used to boost the survival and proliferative rates of iPSCs, creating an inevitable problem of tumorigenicity that hinders the therapeutic usefulness of these iPSCs. To prevent stem cell tumorigenicity, we have examined mechanisms by which the cell cycle genes are regulated in embryonic stem cells (ESCs)...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29435938/transgene-like-animal-models-using-intronic-micrornas
#7
Shi-Lung Lin, Shin-Ju E Chang, Shao-Yao Ying
Transgenic animal models are valuable tools for testing gene functions and drug mechanisms in vivo. They are also the best similitude for a human body for etiological and pathological research of diseases. All pharmaceutically developed medicines must be proven to be safe and effective in animals before approval by the Food and Drug Administration (FDA) to be used in clinical trials. To this end, the transgenic animal models of diseases serve as the front line of drug evaluation. However, there is currently no transgenic animal model for microRNA (miRNA)-related research...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29435931/in-vitro-methods-for-analyzing-mirna-roles-in-cancer-cell-proliferation-invasion-and-metastasis
#8
Jian Xu, Xuelian Xiao, Daheng Yang
MicroRNAs (miRNAs) are small noncoding, single-stranded RNAs consisting of 20-24 nucleotides (Bartel, Cell 116:281-297, 2004), which regulate target genes expression by interacting with 3'-untranslated regions (3'-UTRs) of target mRNAs, leading to translation repression or mRNA degradation (Filipowicz et al., Nat Rev Genet 9:102-114, 2008; Nilsen, Trends Genet 23:243-249, 2007). Accumulating evidence has elucidated them as oncogenes or tumor suppressors in cancers such as hepatocellular carcinoma, breast cancer, and lung cancer (Liu et al...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29435927/gene-silencing-in-vitro-and-in-vivo-using-intronic-micrornas
#9
Shi-Lung Lin, Shao-Yao Ying
MicroRNAs (miRNAs), small single-stranded regulatory RNAs capable of interfering with intracellular messenger RNAs (mRNAs) that contain either complete or partial complementarity, are useful for the design of new therapies against cancer polymorphism and viral mutation. Numerous miRNAs have been reported to induce RNA interference (RNAi), a post-transcriptional gene-silencing mechanism. Recent evidence also indicates that they are involved in the transcriptional regulation of genome activities. They were first discovered in Caenorhabditis elegans as native RNA fragments that modulate a wide range of genetic regulatory pathways during embryonic development, and are now recognized as small gene silencers transcribed from the noncoding regions of a genome...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29435919/the-microrna
#10
Shao-Yao Ying, Donald C Chang, Shi-Lung Lin
MicroRNAs (miRNAs), widely distributed, small regulatory RNA genes, target both messenger RNA (mRNA) degradation and suppression of protein translation based on sequence complementarity between the miRNA and its targeted mRNA. Different names have been used to describe various types of miRNA. During evolution, RNA retroviruses or transgenes invaded the eukaryotic genome and were inserted itself in the noncoding regions of DNA, conceivably acting as transposon-like jumping genes, providing defense from viral invasion and fine-tuning of gene expression as a secondary level of gene modulation in eukaryotes...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29435152/mir-30a-suppresses-lung-cancer-progression-by-targeting-sirt1
#11
Yaowu Guan, Zhongming Rao, Cheng Chen
The class III histone deacetylase silent information regulator 1 (SIRT1) is frequently overexpressed in a variety of tumors, including lung cancer; however, its regulatory mechanisms are largely unknown. In this study, we found that an inconsistent trend between SIRT1 protein and mRNA levels in human lung cancer tissues, suggesting that a post-transcriptional mechanism may involved in SIRT1 regulation. Because microRNAs are important post-transcriptional regulators of gene expression, candidate miRNAs that could potentially bind SIRT1 were gained through bioinformatics analyses...
January 12, 2018: Oncotarget
https://www.readbyqxmd.com/read/29435012/microrna-9-functions-as-a-tumor-suppressor-and-enhances-radio-sensitivity-in-radio-resistant-a549-cells-by-targeting-neuropilin-1
#12
Kai Xiong, Li Hong Shao, Hai Qin Zhang, Linlin Jin, Wei Wei, Zhuo Dong, Yue Quan Zhu, Ning Wu, Shun Zi Jin, Li Xiang Xue
Radiotherapy is commonly used to treat lung cancer but may not kill all cancer cells, which may be attributed to the radiotherapy resistance that often occurs in non-small cell lung cancer (NSCLC). At present, the molecular mechanism of radio-resistance remains unclear. Neuropilin 1 (NRP1), a co-receptor for vascular endothelial growth factor (VEGF), was demonstrated to be associated with radio-resistance of NSCLC cells via the VEGF-phosphoinositide 3-kinase-nuclear factor-κB pathway in our previous study...
March 2018: Oncology Letters
https://www.readbyqxmd.com/read/29434998/micrornas-and-cancer-key-paradigms-in-molecular-therapy
#13
Weige Tan, Bodu Liu, Shaohua Qu, Gehao Liang, Wei Luo, Chang Gong
MicroRNAs (miRNAs) are a type of small non-coding RNA molecule that performs an important role in post-transcriptional gene regulation. Since miRNAs were first identified in 1993, a number of studies have demonstrated that they act as tumor suppressors or oncogenes in human cancer, including colorectal, lung, brain, breast and liver cancer, and leukemia. Large high-throughput studies have previously revealed that miRNA profiling is critical for the diagnosis and prognosis of patients with cancer, while certain miRNAs possess the potential to be used as diagnostic and prognostic biomarkers or therapeutic targets in cancer...
March 2018: Oncology Letters
https://www.readbyqxmd.com/read/29434994/microrna-122-3p-inhibits-tumor-cell-proliferation-and-induces-apoptosis-by-targeting-forkhead-box-o-in-a549-cells
#14
Wen Wang, Jinsong Yang, Fenglei Yu, Wenjie Li, Li Wang, Haoyu Zou, Xia Long
The imbalance between cell proliferation and apoptosis was implicated to serve key roles in cancer pathogenesis. The characteristics of microRNAs (miRNAs/miRs) have attracted much attention in research focusing on cancer pathogenesis in recent years. miR-122-3p has been reported to be associated with a number of disease processes and pathogenesis, including lung cancer. The present study aimed to investigate the association of miR-122-3p expression level with cell proliferation and apoptosis in a lung cancer cell line...
February 2018: Oncology Letters
https://www.readbyqxmd.com/read/29434967/celastrol-suppresses-the-proliferation-of-lung-adenocarcinoma-cells-by-regulating-microrna-24-and-microrna-181b
#15
Yun-Fei Yan, Han-Han Zhang, Qing Lv, Yue-Mei Liu, You-Jie Li, Bao-Sheng Li, Ping-Yu Wang, Wen-Jing Shang, Zhen Yue, Shu-Yang Xie
Cumulative evidence has indicated that celastrol may suppress cancer growth; however, the underlying mechanism requires further investigation. In the present study, A549 cells were treated with various concentrations of celastrol. Lung cancer cell proliferation was evaluated using an MTT assay and observed under a microscope. Cell apoptosis was detected by Annexin V fluorescein isothiocyanate/propidium iodide double-labeled flow cytometry. The results demonstrated that celastrol suppressed proliferation and induced apoptosis in a dose-independent manner...
February 2018: Oncology Letters
https://www.readbyqxmd.com/read/29434826/microrna-584-inhibits-cell-proliferation-and-invasion-in-non-small-cell-lung-cancer-by-directly-targeting-mtdh
#16
Yixiang Zhang, Yanjun Wang, Jinguang Wang
Lung cancer is the third most frequent human malignant tumour and the leading cause of cancer-associated mortality worldwide. Emerging lines of evidence have demonstrated that microRNAs (miRNAs) are upregulated or downregulated in non-small cell lung cancer (NSCLC), and this phenomenon is involved in the regulation of various processes during tumorigenesis and progression, including tumour groWTh, apoptosis, cell invasion, and tumour metastasis. Therefore, understanding the molecular mechanism that associates abnormally expressed miRNAs with NSCLC formation and development may lead to the identification of novel diagnostic, and therapeutic targets for patients with NSCLC...
February 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29434747/microrna-30a-suppresses-non-small-cell-lung-cancer-by-targeting-myb-related-protein-b
#17
Guo-Jun Geng, Ying-Tao Yang, Jie Jiang, Xiu-Yi Yu, Xian-En Fa
Non-small-cell lung cancer (NSCLC) is one of the leading causes of cancer mortality worldwide. A growing body of evidence indicates that microRNA (miR) have important and diverse roles in the proliferation, apoptosis and metastasis of human cancer cells. In the present study, the molecular regulation mechanism of miR-30a and its potential target, Myb-related protein B (MYBL2) was investigated in NSCLC. Reverse transcription-quantitative polymerase chain reaction results showed that miR-30a was significantly downregulated in NSCLC tissues compared with adjacent normal tissues (P<0...
February 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29431637/silencing-the-snail-dependent-rna-splice-regulator-esrp1-drives-malignant-transformation-of-human-pulmonary-epithelial-cells
#18
Tonya C Walser, Zhe Jing, Linh M Tran, Ying Q Lin, Natalie Yakobian, Gerald Wang, Kostyantyn Krysan, Li X Zhu, Sherven Sharma, Mi-Heon Lee, John A Belperio, Aik T Ooi, Brigitte N Gomperts, Jerry W Shay, Jill E Larsen, John D Minna, Long-Sheng Hong, Michael C Fishbein, Steven M Dubinett
Epithelial-to-mesenchymal transition (EMT) is organized in cancer cells by a set of key transcription factors, but the significance of this process is still debated including in non-small cell lung cancer (NSCLC). Here we report increased expression of the EMT-inducing transcription factor Snail in premalignant pulmonary lesions, relative to histologically normal pulmonary epithelium. In immortalized human pulmonary epithelial cells and isogenic derivatives, we documented Snail-dependent anchorage-independent growth in vitro and primary tumor growth and metastatic behavior in vivo...
February 5, 2018: Cancer Research
https://www.readbyqxmd.com/read/29430184/application-of-serum-microrna-9-5p-21-5p-and-223-3p-combined-with-tumor-markers-in-the-diagnosis-of-non-small-cell-lung-cancer-in-yunnan-in-southwestern-china
#19
Yanlong Yang, Kai Chen, Yongchun Zhou, Zaoxiu Hu, Shuai Chen, Yunchao Huang
Purpose: Xuanwei City is located in late Permian coal-accumulating areas of the northeastern region of Yunnan Province. In China, morbidity and mortality from lung cancer are highest in Yunnan. Identifying useful circulating markers suitable for the diagnosis of lung cancer in this region is quite meaningful. In this study, we evaluated diagnostic roles of serum miR-9-5p, 21-5p, 223-3p, 135b-5p, 339-5p, and 501-5p in patients with non-small-cell lung cancer (NSCLC) in Yunnan. Moreover, we evaluated the diagnostic performance of several tumor markers, including carcinoembryonic antigen (CEA), cytokeratin 19 fragment 21-1 (CYFRA21-1), and squamous cell carcinoma-related antigen (SCC)...
2018: OncoTargets and Therapy
https://www.readbyqxmd.com/read/29424924/hur-ttp-and-mir-133b-expression-in-nsclc-and-their-association-with-prognosis
#20
L Qian, A-H Ji, W-J Zhang, N Zhao
OBJECTIVE: This study sought to explore HuR, Thrombotic Thrombocytopenic Purpura (TTP), and microRNA 133b (miR-133b) expression levels in non-small cell lung cancer (NSCLC) patients and assess the relationship of expression with disease prognosis. PATIENTS AND METHODS: One hundred and ten paraffin-embedded and 33 fresh flash-frozen NSCLC samples, together with matched tumor adjacent normal tissue controls, were collected from patients between January 2013 and July 2015 in Yidu Central Hospital of Weifang...
January 2018: European Review for Medical and Pharmacological Sciences
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