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https://www.readbyqxmd.com/read/27936183/molecular-evolution-of-pten-pseudogenes-in-mammals
#1
Jingsi Tang, Ruihong Ning, Bo Zeng, Ying Li
Phosphatase and tensin homolog (PTEN) is a tumor-suppressor gene. PTEN pseudogene (PTENp) acts as an endogenous RNA, which regulates its parental gene by competitively binding to the 3' UTR of PTEN gene in the human. Despite the importance of this pseudogene, little is known about the molecular evolution of PTENp in mammals. In this study, we identified 37 pseudogenes from 65 mammalian genomes. Among them, 32 were from rodents or primates. Phylogenetic analyse showed a complex evolutionary history of this gene family...
2016: PloS One
https://www.readbyqxmd.com/read/27916857/in-silico-characterization-of-mirna-and-long-non-coding-rna-interplay-in-multiple-myeloma
#2
Domenica Ronchetti, Martina Manzoni, Katia Todoerti, Antonino Neri, Luca Agnelli
The identification of deregulated microRNAs (miRNAs) and long non-coding RNAs (lncRNAs) in multiple myeloma (MM) has progressively added a further level of complexity to MM biology. In addition, the cross-regulation between lncRNAs and miRNAs has begun to emerge, and theoretical and experimental studies have demonstrated the competing endogenous RNA (ceRNA) activity of lncRNAs as natural miRNA decoys in pathophysiological conditions, including cancer. Currently, information concerning lncRNA and miRNA interplay in MM is virtually absent...
November 29, 2016: Genes
https://www.readbyqxmd.com/read/27913295/dissection-of-functional-lncrnas-in-alzheimer-s-disease-by-construction-and-analysis-of-lncrna-mrna-networks-based-on-competitive-endogenous-rnas
#3
Lian-Kun Wang, Xiao-Feng Chen, Dan-Dan He, You Li, Jin Fu
Alzheimer's disease (AD) is a neurodegenerative disorder that is the most common cause of dementia in the elderly, and intracellular neurofibrillary tangles (NFTs) are one of the pathological features of AD. Recent studies have suggested long noncoding RNAs (lncRNAs) play important roles in AD. Competing endogenous RNAs (ceRNAs) is a mechanism that has recently been proposed, in which lncRNAs compete for common miRNA-binding sites with mRNAs. However, the roles of lncRNAs and ceRNA in AD NFTs is limited. In this study, we constructed a global triple network based on ceRNA theory, then an AD NFT lncRNA-mRNA network (NFTLMN) was generated...
November 29, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/27903978/circular-rna-znf609-functions-as-a-competitive-endogenous-rna-to-regulate-akt3-expression-by-sponging-mir-150-5p-in-hirschsprung-s-disease
#4
Lei Peng, Guanglin Chen, Zhongxian Zhu, Ziyang Shen, Chunxia Du, Rujin Zang, Yang Su, Hua Xie, Hongxing Li, Xiaoqun Xu, Yankai Xia, Weibing Tang
Research over the past decade suggested critical roles for circular RNAs in the natural growth and disease progression. However, it remains poorly defined whether the circular RNAs participate in Hirschsprung disease (HSCR). Here, we reported that the cir-ZNF609 was down-regulated in HSCR compared with normal bowel tissues. Furthermore, suppression of cir-ZNF609 inhibited the proliferation and migration of cells. We screened out several putative cir-ZNF609 ceRNAs of which the AKT3 transcript was selected. Finally, RNA immunoprecipitation and luciferase reporter assays demonstrated that cir-ZNF609 may act as a sponge for miR-150-5p to modulate the expression of AKT3...
November 26, 2016: Oncotarget
https://www.readbyqxmd.com/read/27902487/identification-of-laryngeal-cancer-prognostic-biomarkers-using-an-inflammatory-gene-related-competitive-endogenous-rna-network
#5
Qun He, Linli Tian, Hao Jiang, Jiarui Zhang, Qiang Li, Yanan Sun, Jiannan Zhao, Huijun Li, Ming Liu
Competitive endogenous RNAs (ceRNAs) act as molecular sponges for microRNAs (miRNAs), and are associated with tumorigenesis in various cancers, including laryngeal cancer (LC). In this work, we constructed an LC-specific inflammatory gene-related ceRNA network (IceNet). In IceNet, ceRNAs targeting inflammation-related genes tended to be network hubs. Additionally, the betweenness centralities of these hub ceRNAs were higher than those of the inflammation-related genes themselves, indicating that the hub ceRNAs in this study played critical roles in communication between IceNet molecules...
November 25, 2016: Oncotarget
https://www.readbyqxmd.com/read/27896996/cerna-search-method-identified-a-met-activated-subgroup-among-egfr-dna-amplified-lung-adenocarcinoma-patients
#6
Halla Kabat, Leo Tunkle, Inhan Lee
Given the diverse molecular pathways involved in tumorigenesis, identifying subgroups among cancer patients is crucial in precision medicine. While most targeted therapies rely on DNA mutation status in tumors, responses to such therapies vary due to the many molecular processes involved in propagating DNA changes to proteins (which constitute the usual drug targets). Though RNA expressions have been extensively used to categorize tumors, identifying clinically important subgroups remains challenging given the difficulty of discerning subgroups within all possible RNA-RNA networks...
2016: Pacific Symposium on Biocomputing
https://www.readbyqxmd.com/read/27887846/long-non-coding-rna-metastasis-associated-lung-adenocarcinoma-transcript-1-regulates-the-expression-of-gli2-by-mir-202-to-strengthen-gastric-cancer-progression
#7
Yue Zhang, Zhuo Chen, Ming-Jing Li, Huan-Yu Guo, Nian-Cai Jing
BACKGROUND: Gastric cancer (GC) is one of the most common malignancies and ranks the second leading cause of cancer death worldwide. Some studies had reported the tumor-promoting effects of long non-coding RNA metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) as a competing endogenous RNA (ceRNA) by sponging to microRNAs. However, the molecular mechanism of ceRNA regulatory pathway involving MALAT1 in GC remains unclear. METHODS: MALAT1 and miR -202 expression was detected by quantitative real time PCR (qRT-PCR) in 60 gastric cancer tissues and adjacent normal tissues, CCK8 cell proliferation assays, cell cycle analysis and cell apoptosis assays were performed to detect the GC cell proliferation and apoptosis...
November 22, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27875077/march5-rna-promotes-autophagy-migration-and-invasion-of-ovarian-cancer-cells
#8
Jianguo Hu, Ying Meng, Zhanqin Zhang, Qiuting Yan, Xingwei Jiang, Zilan Lv, Lina Hu
MARCH5 is a crucial regulator of mitochondrial fission. However, the expression and function of MARCH5 in ovarian cancer have not been determined. This study investigated the expression and function of MARCH5 in ovarian cancer with respect to its potential role in the tumorigenesis of the disease as well as its usefulness as an early diagnostic marker. We found that the expression of MARCH5 was substantially upregulated in ovarian cancer tissue in comparison with the normal control. Silencing MARCH5 in SKOV3 cells decreased TGFB1-induced cell macroautophagy/autophagy, migration, and invasion in vitro and in vivo, whereas the ectopic expression of MARCH5 in A2780 cells had the opposite effect...
November 22, 2016: Autophagy
https://www.readbyqxmd.com/read/27874091/hmga1p7-pseudogene-regulates-h19-and-igf2-expression-by-a-competitive-endogenous-rna-mechanism
#9
Marco De Martino, Floriana Forzati, Marianna Marfella, Simona Pellecchia, Claudio Arra, Luigi Terracciano, Alfredo Fusco, Francesco Esposito
Recent studies have revealed that pseudogene transcripts can function as competing endogenous RNAs, and thereby can also contribute to cancer when dysregulated. We have recently identified two pseudogenes, HMGA1P6 and HMGA1P7 for the HMGA1 gene whose overexpression has a critical role in cancer progression. These pseudogenes work as competitive endogenous RNA decoys for HMGA1 and other cancer related genes suggesting their role in carcinogenesis. Looking for new HMGA1 pseudogene ceRNAs, we performed RNA sequencing technology on mouse embryonic fibroblasts deriving from transgenic mice overexpressing HMGA1P7...
November 22, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27871486/impact-of-microrna-levels-target-site-complementarity-and-cooperativity-on-competing-endogenous-rna-regulated-gene-expression
#10
Rémy Denzler, Sean E McGeary, Alexandra C Title, Vikram Agarwal, David P Bartel, Markus Stoffel
Expression changes of competing endogenous RNAs (ceRNAs) have been proposed to influence microRNA (miRNA) activity and thereby regulate other transcripts containing miRNA-binding sites. Here, we find that although miRNA levels define the extent of repression, they have little effect on the magnitude of the ceRNA expression change required to observe derepression. Canonical 6-nt sites, which typically mediate modest repression, can nonetheless compete for miRNA binding, with potency ∼20% of that observed for canonical 8-nt sites...
November 3, 2016: Molecular Cell
https://www.readbyqxmd.com/read/27863388/comprehensive-analysis-of-aberrantly-expressed-profiles-of-lncrnas-and-mirnas-with-associated-cerna-network-in-muscle-invasive-bladder-cancer
#11
Hanbo Wang, Leilei Niu, Shaobo Jiang, Jing Zhai, Ping Wang, Feng Kong, Xunbo Jin
Although initially thought to be transcriptional noise, long noncoding RNAs (lncRNAs) are gaining increased attention in human cancers as its diversity function. At present, lncRNAs are regarded as the main part of competing endogenous RNA (ceRNA) network due to its regulation on protein-coding gene expression by acting as miRNA sponges. However, functional roles of lncRNA-mediated ceRNAs in muscle-invasive bladder cancer remain unclear. To clarify relevant potential mechanisms, here we comprehensively compared the expression profiles of mRNAs, lncRNAs and miRNAs between 322 muscle-invasive bladder cancer tissues and 19 non-tumor bladder tissues, based on the Cancer Genome Atlas (TCGA)...
November 15, 2016: Oncotarget
https://www.readbyqxmd.com/read/27854515/lncrna-uca1-contributes-to-imatinib-resistance-by-acting-as-a-cerna-against-mir-16-in-chronic-myeloid-leukemia-cells
#12
Yun Xiao, Changjie Jiao, Yiqiang Lin, Meijun Chen, Jingwen Zhang, Jiajia Wang, Zhongying Zhang
Imatinib (IM) has been applied to the chronic phase of chronic myeloid leukemia (CML) and has great benefit on the prognosis of patients with CML. The function of drug efflux mediated by multidrug resistance protein-1 (MDR1) is considered as a main reason for IM drug resistance in CML cells. However, the exact mechanisms of MDR1 modulation in IM resistance of CML cells remain unclear. In the present study, long noncoding RNA (lncRNA) UCA1 was identified as an important modulator of MDR1 by a model system of leukemia cell lines with a gradual increase of MDR1 expression and IM resistance...
November 17, 2016: DNA and Cell Biology
https://www.readbyqxmd.com/read/27844181/stard13-promotes-hepatocellular-carcinoma-apoptosis-by-acting-as-a-cerna-for-fas
#13
Hai Zhang, Fang Wang, Yahua Hu
OBJECTIVES: To study the roles of STARD13 in cellular apoptosis of hepatocellular carcinoma (HCC). RESULTS: Quantitative real-time PCR and immunohistochemistry analyses showed that the expression levels of STARD13 and Fas were lower in clinical HCC tissues than in normal tissues and were positively correlated, which is consistent with the results analyzed by The Cancer Genome Atlas (TCGA) data. Patients with higher STARD13 or Fas expression levels had longer overall survival...
November 14, 2016: Biotechnology Letters
https://www.readbyqxmd.com/read/27827524/long-non-coding-rna-gas5-acts-as-a-molecular-sponge-to-regulate-mir-23a-in-gastric-cancer
#14
Xiao Liu, Tongli Jiao, Yinzhong Wang, Weiqiang Su, Zhaopeng Tang, Chaoyang Han
BACKGROUND: Long non-coding RNA (lncRNAs) play critical roles in the development of cancers. LncRNA GAS5 was identified to be involved in tumorigenesis of several cancers. However, its role and function in gastric cancer (GC) remains unknown. METHODS: The expression of GAS5, miR-23a and MT2A in 24 paired GC tissues was detected by qRT-PCR and subjected to correlation analysis. Bio-informatics analysis was performed by using DIANA Tools. Abnormal GAS5 expression was conducted in GC cells to analyze its regulation on miR-23a and MT2A via using qRT-PCR, western blot and luciferase reporter assay...
November 9, 2016: Minerva Medica
https://www.readbyqxmd.com/read/27826625/integrated-analysis-of-long-non-coding-rna%C3%A2-associated-cerna-network-reveals-potential-lncrna-biomarkers-in-human-lung-adenocarcinoma
#15
Jing Sui, Yun-Hui Li, Yan-Qiu Zhang, Cheng-Yun Li, Xian Shen, Wen-Zhuo Yao, Hui Peng, Wei-Wei Hong, Li-Hong Yin, Yue-Pu Pu, Ge-Yu Liang
Accumulating evidence has highlighted the important roles of long non-coding RNAs (lncRNAs) acting as competing endogenous RNAs (ceRNAs) in tumor biology. However, the roles of cancer specific lncRNAs in lncRNA-related ceRNA network of lung adenocarcinoma (LUAD) are still unclear. In the present study, the 465 RNA sequencing profiles in LUAD patients were obtained from the cancer genome atlas (TCGA) database, which provides large sample RNA sequencing data free of charge, and 41 cancer specific lncRNAs, 25 miRNAs and 1053 mRNAs (fold change >2, p<0...
November 2016: International Journal of Oncology
https://www.readbyqxmd.com/read/27822773/erratum-to-an-update-on-peripheral-ossifying-fibroma-case-report-and-literature-review
#16
María José Franco-Barrera, María Guadalupe Zavala-Cerna, Rubén Fernández-Tamayo, Israel Vivanco-Pérez, Nora Mariana Fernández-Tamayo, Olivia Torres-Bugarín
No abstract text is available yet for this article.
November 8, 2016: Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27813492/long-non-coding-rna-pvt1-promotes-osteosarcoma-development-by-acting-as-a-molecular-sponge-to-regulate-mir-195
#17
Quan Zhou, Fengli Chen, Jiali Zhao, Baojun Li, Yong Liang, Wei Pan, Shaoxian Zhang, Xinhong Wang, Donghui Zheng
A growing body of evidence has indicated that long non-coding RNAs (lncRNAs) serve as competing endogenous RNAs (ceRNAs) during oncogenesis. In this study, the qRT-PCR results indicated that the lncRNA PVT1 is overexpressed in osteosarcoma and decreased the survival rate of osteosarcoma patients. MTT and clonal colony formation assays were used to detect the effect of PVT1 on proliferation, and flow cytometry was performed to assess apoptosis and the cell cycle. A Transwell assay was used to analyze migration and invasion...
November 2, 2016: Oncotarget
https://www.readbyqxmd.com/read/27809873/lncrnas-h19-and-hulc-activated-by-oxidative-stress-promote-cell-migration-and-invasion-in-cholangiocarcinoma-through-a-cerna-manner
#18
Wen-Tao Wang, Hua Ye, Pan-Pan Wei, Bo-Wei Han, Bo He, Zhen- Hua Chen, Yue-Qin Chen
BACKGROUND: Long non-coding RNAs (lncRNAs) are known to play important roles in different cell contexts, including cancers. However, little is known about lncRNAs in cholangiocarcinoma (CCA), a cholangiocyte malignancy with poor prognosis, associated with chronic inflammation and damage to the biliary epithelium. The aim of the study is to identify if any lncRNA might associate with inflammation or oxidative stress in CCA and regulate the disease progression. METHODS: In this study, RNA-seqs datasets were used to identify aberrantly expressed lncRNAs...
November 3, 2016: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/27777881/tumor-infiltrating-lymphocytes-in-triple-negative-breast-cancer-receiving-neoadjuvant-chemotherapy
#19
Carlos A Castaneda, Elizabeth Mittendorf, Sandro Casavilca, Yun Wu, Miluska Castillo, Patricia Arboleda, Teresa Nunez, Henry Guerra, Carlos Barrionuevo, Ketty Dolores-Cerna, Carolina Belmar-Lopez, Julio Abugattas, Gabriela Calderon, Miguel De La Cruz, Manuel Cotrina, Jorge Dunstan, Henry L Gomez, Tatiana Vidaurre
AIM: To determine influence of neoadjuvant-chemotherapy (NAC) over tumor-infiltrating-lymphocytes (TIL) in triple-negative-breast-cancer (TNBC). METHODS: TILs were evaluated in 98 TNBC cases who came to Instituto Nacional de Enfermedades Neoplasicas from 2005 to 2010. Immunohistochemistry staining for CD3, CD4, CD8 and FOXP3 was performed in tissue microarrays (TMA) sections. Evaluation of H/E in full-face and immunohistochemistry in TMA sections was performed in pre and post-NAC samples...
October 10, 2016: World Journal of Clinical Oncology
https://www.readbyqxmd.com/read/27764797/aberrant-cerna-mediated-regulation-of-kng1-contributes-to-glioblastoma-induced-angiogenesis
#20
Yuan Ren, Nan Ji, Xixiong Kang, Renzhi Wang, Wenbin Ma, Zhenjun Hu, Xingfeng Liu, Yajie Wang
Glioblastoma is a highly vascularized brain tumor that causes high mortality. Kininogen-1 (KNG1) has demonstrated both tumor suppressor and antiangiogenesis properties in gliobastoma cells. We analyzed the microarray and proteomic profiles of tumor tissues from glioblastoma patients (N = 180), and identified potential RNA regulators of the KNG1. Validation experiments in U87 glioblastoma cells showed that the regulation of KNG1 by CTU1, KIAA1274, and RAX was mediated by miR-138. The siRNA-mediated knockdown of CTU1, KIAA1274, or RAX in U87 cells and immortalized human endothelial cells (iHECs) significantly reduced KNG1 expression (P < 0...
October 14, 2016: Oncotarget
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