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exosome cancer lncRNA

Lei Dong, Wanrun Lin, Peng Qi, Mi-Die Xu, Xiaoben Wu, Shujuan Ni, Dan Huang, Wei-Wei Weng, Cong Tan, Weiqi Sheng, Xiaoyan Zhou, Xiang Du
BACKGROUND: Long noncoding RNA (lncRNA) and mRNAs are long RNAs (≥200 nucleotides) compared with miRNAs. In blood, long RNAs may be protected by serum extracellular vesicles, such as apoptotic bodies (AB), microvesicles (MV), and exosomes (EXO). They are potential biomarkers for identifying cancer. METHODS: Sera from 76 preoperative colorectal cancer patients, 76 age- and sex-matched healthy subjects, and 20 colorectal adenoma patients without colorectal cancer were collected...
July 2016: Cancer Epidemiology, Biomarkers & Prevention
Jin Zhang, Shuang-Chun Liu, Xin-Hua Luo, Guo-Xian Tao, Ming Guan, Hong Yuan, Da-Kang Hu
BACKGROUND: As the second leading cause of cancer morbidity and death in women, cervical cancer remains an important public health problem worldwide. Novel biomarkers with high sensitivity and specificity for the early detection and diagnosis of cervical cancer are urgently needed. Increasing evidence shows that long noncoding RNAs (lncRNAs) are differentially expressed in cancer tissues and may serve as diagnostic markers. In multiple tumor types, exosomes harboring lncRNAs are actively released from tumor cells...
May 17, 2016: Journal of Clinical Laboratory Analysis
Le Qu, Jin Ding, Cheng Chen, Zhen-Jie Wu, Bing Liu, Yi Gao, Wei Chen, Feng Liu, Wen Sun, Xiao-Feng Li, Xue Wang, Yue Wang, Zhen-Yu Xu, Li Gao, Qing Yang, Bin Xu, Yao-Ming Li, Zi-Yu Fang, Zhi-Peng Xu, Yi Bao, Deng-Shuang Wu, Xiong Miao, Hai-Yang Sun, Ying-Hao Sun, Hong-Yang Wang, Lin-Hui Wang
Sunitinib resistance is a major challenge for advanced renal cell carcinoma (RCC). Understanding the underlying mechanisms and developing effective strategies against sunitinib resistance are highly desired in the clinic. Here we identified an lncRNA, named lncARSR (lncRNA Activated in RCC with Sunitinib Resistance), which correlated with clinically poor sunitinib response. lncARSR promoted sunitinib resistance via competitively binding miR-34/miR-449 to facilitate AXL and c-MET expression in RCC cells. Furthermore, bioactive lncARSR could be incorporated into exosomes and transmitted to sensitive cells, thus disseminating sunitinib resistance...
May 9, 2016: Cancer Cell
Alireza Ahadi, Samuel Brennan, Paul J Kennedy, Gyorgy Hutvagner, Nham Tran
Long non-coding RNAs (lncRNAs) form the largest transcript class in the human transcriptome. These lncRNA are expressed not only in the cells, but they are also present in the cell-derived extracellular vesicles such as exosomes. The function of these lncRNAs in cancer biology is not entirely clear, but they appear to be modulators of gene expression. In this study, we characterize the expression of lncRNAs in several prostate cancer exosomes and their parental cell lines. We show that certain lncRNAs are enriched in cancer exosomes with the overall expression signatures varying across cell lines...
2016: Scientific Reports
Claudia Berrondo, Jonathan Flax, Victor Kucherov, Aisha Siebert, Thomas Osinski, Alex Rosenberg, Christopher Fucile, Samuel Richheimer, Carla J Beckham
Exosomes are 30-150nM membrane-bound secreted vesicles that are readily isolated from biological fluids such as urine (UEs). Exosomes contain proteins, micro RNA (miRNA), messenger RNA (mRNA), and long non-coding RNA (lncRNA) from their cells of origin. Although miRNA, protein and lncRNA have been isolated from serum as potential biomarkers for benign and malignant disease, it is unknown if lncRNAs in UEs from urothelial bladder cancer (UBC) patients can serve as biomarkers. lncRNAs are > 200 nucleotide long transcripts that do not encode protein and play critical roles in tumor biology...
2016: PloS One
Shihua Wang, Xiaoxia Li, Rongjia Zhu, Qin Han, Robert Chunhua Zhao
Mesenchymal stem cells (MSCs) can be attracted to tumor sites and become an important component of the tumor microenvironment, thus contributing to tumor development. Emerging evidence suggests that tumor cells could transfer genetic information into MSCs through the release of exosomes. However, the molecular mechanisms by which tumor exosomes contribute to interactions between MSCs and tumor cells remain largely unknown. In this study, we found that lung tumor cell derived exosomes could inhibit MSCs osteogenic and adipogenic differentiation...
February 2016: International Journal of Oncology
Gerardo Botti, Laura Marra, Maria Gabriella Malzone, Annamaria Anniciello, Chiara Botti, Renato Franco, Monica Cantile
In recent years the importance of the role played by non-coding RNA on the regulation of gene expression was increased by numerous studies. The research mainly focused on small ncRNAs, such as miRNAs, while the functions of long non-coding RNA (lncRNA) have been much less studied. lncRNAs can be transcribed from intergenic, intragenic or specific chromosomal regions. Compared to miRNAs, lncRNAs have a complex secondary and tertiary structure which allows to bind proteins, RNA, DNA and to carry out their regulatory functions...
December 9, 2015: Current Drug Targets
Andreia Silva, Marc Bullock, George Calin
Non-coding RNAs have long been associated with cancer development and progression, and since their earliest discovery, their clinical potential in identifying and characterizing the disease has been pursued. Long non-coding (lncRNAs), a diverse class of RNA transcripts >200 nucleotides in length with limited protein coding potential, has been only modestly studied relative to other categories of non-coding RNAs. However, recent data suggests they too may be important players in cancer. In this article, we consider the value of lncRNAs in the clinical setting, and in particular their potential roles as diagnostic and prognostic markers in cancer...
October 27, 2015: Cancers
Ya-Kai Huang, Jian-Chun Yu
Gastric cancer (GC) is the fourth most common cancer and the third leading cause of cancer mortality worldwide. MicroRNAs (miRNAs) and long non-coding RNAs (lncRNAs) are the most popular non-coding RNAs in cancer research. To date, the roles of miRNAs and lncRNAs have been extensively studied in GC, suggesting that miRNAs and lncRNAs represent a vital component of tumor biology. Furthermore, circulating miRNAs and lncRNAs are found to be dysregulated in patients with GC compared with healthy individuals. Circulating miRNAs and lncRNAs may function as promising biomarkers to improve the early detection of GC...
September 14, 2015: World Journal of Gastroenterology: WJG
Alice Conigliaro, Viviana Costa, Alessia Lo Dico, Laura Saieva, Simona Buccheri, Francesco Dieli, Mauro Manno, Samuele Raccosta, Carmine Mancone, Marco Tripodi, Giacomo De Leo, Riccardo Alessandro
BACKGROUND: CD90+ liver cancer cells have been described as cancer stem-cell-like (CSC), displaying aggressive and metastatic phenotype. Using two different in vitro models, already described as CD90+ liver cancer stem cells, our aim was to study their interaction with endothelial cells mediated by the release of exosomes. METHODS: Exosomes were isolated and characterized from both liver CD90+ cells and hepatoma cell lines. Endothelial cells were treated with exosomes, as well as transfected with a plasmid containing the full length sequence of the long non-coding RNA (lncRNA) H19...
2015: Molecular Cancer
Mustafa Işın, Ege Uysaler, Emre Özgür, Hikmet Köseoğlu, Öner Şanlı, Ömer B Yücel, Uğur Gezer, Nejat Dalay
Exosomes are membranous vesicles containing various biomolecules including lncRNAs which are involved in cellular communication and are secreted from many cells including cancer cells. In our study, investigated the exosomal GAS5 and lincRNA-p21 lncRNA levels in urine samples from 30 patients with prostate cancer (PCa) and 49 patients with benign prostatic hyperplasia. Quantification of lncRNA molecules was performed by real-time PCR. We observed a significant difference in the exosomal lincRNA-p21 levels between PCa and BPH patients whereas the GAS5 levels did not reveal a difference...
2015: Frontiers in Genetics
Kenji Takahashi, Irene K Yan, Joseph Wood, Hiroaki Haga, Tushar Patel
UNLABELLED: Hepatocellular cancer (HCC) is a highly treatment-refractory cancer and is also highly resistant to adverse cellular stress. Although cell behavior can be modulated by noncoding RNAs (ncRNA) within extracellular vesicles (EV), the contributions of long noncoding RNAs (lncRNAs) are largely unknown. To this end, the involvement and functional roles of lncRNAs contained within EVs during chemotherapeutic stress in human HCC were determined. Expression profiling identified a subset of lncRNAs that were enriched in tumor cell-derived vesicles released from two different cell lines...
October 2014: Molecular Cancer Research: MCR
Yan J Jiang, Daniel D Bikle
Sunlight, vitamin D and skin cancer form a controversial brew. While too much sunlight exposure causes skin cancer, it is the major source of vitamin D from skin. We propose that these processes can be balanced. Vitamin D signalling (VDS) protects against skin cancer as demonstrated by the susceptibility of the skin to tumor formation in VDR null mice and protection from UVB-induced mutations when VDR agonists are administered. The question is how is protection afforded. Previously, we have focused on the Wnt/β-catenin/hedgehog and DNA damage repair (DDR) pathways...
March 2014: Experimental Dermatology
Kenji Takahashi, Irene K Yan, Hiroaki Haga, Tushar Patel
Resistance to adverse environmental conditions, such as hypoxia, contributes to the reduced efficacy of anticancer therapies and tumor progression. Although deregulated expression of many long noncoding RNA (lncRNA) occurs in human cancers, the contribution of such RNA to tumor responses to hypoxia are unknown. RNA expression profiling identified several hypoxia-responsive lncRNAs, including the long intergenic noncoding RNA, regulator of reprogramming (linc-RoR), which is also increased in expression in malignant liver cancer cells...
April 1, 2014: Journal of Cell Science
Takayuki Kogure, Irene K Yan, Wen-Lang Lin, Tushar Patel
Although the expression of long noncoding RNA (lncRNA) is altered in hepatocellular cancer (HCC), their biological effects are poorly defined. We have identified lncRNA with highly conserved sequences, ultraconserved lncRNA (ucRNA) that are transcribed and altered in expression in HCC. Extracellular vesicles, such as exosomes and microvesicles, are released from tumor cells and can transfer biologically active proteins and RNA across cells. We sought to identify the role of vesicle-mediated transfer of ucRNA as a mechanism by which these novel lncRNA could influence intercellular signaling with potential for environmental modulation of tumor cell behavior...
July 2013: Genes & Cancer
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