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RNA sequencing Cancer

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https://www.readbyqxmd.com/read/28525976/the-adaptation-of-colorectal-cancer-cells-when-forming-metastases-in-the-liver-expression-of-associated-genes-and-pathways-in-a-mouse-model
#1
Derya Bocuk, Alexander Wolff, Petra Krause, Gabriela Salinas, Annalen Bleckmann, Christina Hackl, Tim Beissbarth, Sarah Koenig
BACKGROUND: Colorectal cancer (CRC) is the second leading cause of cancer-related death in men and women. Systemic disease with metastatic spread to distant sites such as the liver reduces the survival rate considerably. The aim of this study was to investigate the changes in gene expression that occur on invasion and expansion of CRC cells when forming metastases in the liver. METHODS: The livers of syngeneic C57BL/6NCrl mice were inoculated with 1 million CRC cells (CMT-93) via the portal vein, leading to the stable formation of metastases within 4 weeks...
May 19, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28525372/overexpression-of-a-novel-candidate-oncogene-kif14-correlates-with-tumor-progression-and-poor-prognosis-in-prostate-cancer
#2
Yixiang Zhang, Yeqing Yuan, Pei Liang, Zhaoxia Zhang, Xiaojing Guo, Ligang Xia, Yingying Zhao, Xing-Sheng Shu, Shengkun Sun, Ying Ying, Yingduan Cheng
Prostate cancer (PCa) is the second leading cause of death from cancer in men. The mechanism underlying tumorigenesis and development of PCa is largely unknown. Here, we identified Kinesin family member 14 (KIF14) as a novel candidate oncogene in PCa. We found that KIF14 was overexpressed in multiple PCa cell lines and primary PCa tissues. Knockdown of KIF14 in DU145 and PC3 prostate cancer cells suppressed cell proliferation, induced cell cycle arrest and apoptosis. Transcriptome analysis by RNA-sequencing demonstrated that KIF4 suppression led to transcriptional changes of genes involved in p53 and TGF-beta signaling pathway...
May 2, 2017: Oncotarget
https://www.readbyqxmd.com/read/28522900/high-throughput-rna-sequencing-utility-for-diagnosis-and-prognosis-in-colon-diseases
#3
EDITORIAL
Mamie Gao, Allen Zhong, Neil Patel, Chiraag Alur, Dinesh Vyas
RNA sequencing is the use of high throughput next generation sequencing technology to survey, characterize, and quantify the transcriptome of a genome. RNA sequencing has been used to analyze the pathogenesis of several malignancies such melanoma, lung cancer, and colorectal cancer. RNA sequencing can identify differential expression of genes (DEG's), mutated genes, fusion genes, and gene isoforms in disease states. RNA sequencing has been used in the investigation of several colorectal diseases such as colorectal cancer, inflammatory bowel disease (ulcerative colitis and Crohn's disease), and irritable bowel syndrome...
April 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28522256/sporadic-early-onset-diffuse-gastric-cancers-have-high-frequency-of-somatic-cdh1-alterations-but-low-frequency-of-somatic-rhoa-mutations-compared-with-late-onset-cancers
#4
Soo Young Cho, Jun Won Park, Yang Liu, Young Soo Park, Ju Hee Kim, Hanna Yang, Hyejin Um, Woo Ri Ko, Byung Il Lee, Sun Young Kwon, Seung Wan Ryu, Chae Hwa Kwon, Do Youn Park, Jae-Hyuk Lee, Sang Il Lee, Kyu Sang Song, Hoon Hur, Sang-Uk Han, Heekyung Chang, Su-Jin Kim, Byung-Sik Kim, Jeong-Hwan Yook, Moon-Won Yoo, Beom-Su Kim, In-Seob Lee, Myeong-Cherl Kook, Nina Thiessen, An He, Chip Stewart, Andrew Dunford, Jaegil Kim, Juliann Shih, Gordon Saksena, Andrew D Cherniack, Steven Schumacher, Amaro-Taylor Weiner, Mara Rosenberg, Gad Getz, Eun Gyeong Yang, Min Hee Ryu, Adam J Bass, Hark Kyun Kim
BACKGROUND & AIMS: Early-onset gastric cancer, which develops in younger patients than most gastric cancers, is usually detected at advanced stages, has diffuse histologic features, and occurs more frequently in women. We investigated somatic genomic alterations associated with the unique characteristics of sporadic diffuse gastric cancers (DGCs) from younger patients. METHODS: We conducted whole exome and RNA sequence analyses of 80 resected DGC samples from patients 45 years old or younger in Korea...
May 15, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28521628/cd36-positive-b-lymphoblasts-predict-poor-outcome-in-children-with-b-lymphoblastic-leukemia
#5
Joanna G Newton, John T Horan, Scott Newman, Michael R Rossi, Rhett P Ketterling, Sunita I Park
Objective We observed that pediatric patients with B lymphoblastic leukemia which expressed CD36 at diagnosis seemed to have worse outcome than patients whose blasts did not. Here, we describe the patient, disease characteristics, pathological, molecular, and genetic features and outcomes of patients with CD36+ B-LL compared to patients with CD36- B-LL. Methods We retrospectively reviewed all flow cytometry reports from September 2008 to December 2015 to identify patients diagnosed at our institution with CD36 expression on B lymphoblasts...
June 2017: Pediatric and Developmental Pathology
https://www.readbyqxmd.com/read/28521398/effect-of-satb1-silencing-on-the-proliferation-invasion-and-apoptosis-of-te-1-esophageal-cancer-cells
#6
Bo Huang, Fei Xiong, Siwang Wang, Xianping Lang, Xiaodong Wang, Hongli Zhou
The aim of the present study was to investigate the effect of special AT-rich sequence-binding protein-1 (SATB1)-targeted small interfering RNA (siRNA) on the proliferation, invasion and apoptosis of TE-1 human esophageal cancer cells. SATB1 has been correlated with the metastasis and poor prognosis of colon and breast cancer, but the role of SATB1 in esophageal cancer remains unknown. Therefore, the present study constructed and transfected SATB1-siRNA into TE-1 cells in order to knockdown the expression of the SATB1 gene...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28515040/a-systematic-review-of-overlapping-microrna-patterns-in-systemic-sclerosis-and-idiopathic-pulmonary-fibrosis
#7
REVIEW
Gianluca Bagnato, William Neal Roberts, Jesse Roman, Sebastiano Gangemi
Lung fibrosis can be observed in systemic sclerosis and in idiopathic pulmonary fibrosis, two disorders where lung involvement carries a poor prognosis. Although much has been learned about the pathogenesis of these conditions, interventions capable of reversing or, at the very least, halting disease progression are not available. Recent studies point to the potential role of micro messenger RNAs (microRNAs) in cancer and tissue fibrogenesis. MicroRNAs are short non-coding RNA sequences (20-23 nucleotides) that are endogenous, evolutionarily conserved and encoded in the genome...
June 30, 2017: European Respiratory Review: An Official Journal of the European Respiratory Society
https://www.readbyqxmd.com/read/28514737/integration-of-phytochemicals-and-phytotherapy-into-cancer-precision-medicine
#8
REVIEW
Thomas Efferth, Mohamed E M Saeed, Elhaj Mirghani, Awadh Alim, Zahir Yassin, Elfatih Saeed, Hassan E Khalid, Salah Daak
Concepts of individualized therapy in the 1970s and 1980s attempted to develop predictive in vitro tests for individual drug responsiveness without reaching clinical routine. Precision medicine attempts to device novel individual cancer therapy strategies. Using bioinformatics, relevant knowledge is extracted from huge data amounts. However, tumor heterogeneity challenges chemotherapy due to genetically and phenotypically different cell subpopulations, which may lead to refractory tumors. Natural products always served as vital resources for cancer therapy (e...
April 27, 2017: Oncotarget
https://www.readbyqxmd.com/read/28512242/a-systematic-analysis-of-oncogenic-gene-fusions-in-primary-colon-cancer
#9
Wigard P Kloosterman, Robert R J Coebergh van den Braak, Mark Pieterse, Markus J van Roosmalen, Anieta M Sieuwerts, Christina Stangl, Ronne Brunekreef, Zarina S Lalmahomed, Salo Ooft, Anne van Galen, Marcel Smid, Armel Lefebvre, Fried Zwartkruis, John W M Martens, John A Foekens, Katharina Biermann, Marco J Koudijs, Jan N M IJzermans, Emile E Voest
Genomic rearrangements that give rise to oncogenic gene fusions can offer actionable targets for cancer therapy. Here we present a systematic analysis of oncogenic gene fusions among a clinically well-characterized, prospectively collected set of 278 primary colon cancers spanning diverse tumor stages and clinical outcomes. Gene fusions and somatic genetic variations were identified in fresh frozen clinical specimens by Illumina RNA-sequencing, the STAR fusion gene detection pipeline, and GATK RNA-seq variant calling...
May 16, 2017: Cancer Research
https://www.readbyqxmd.com/read/28510306/a-polymorphism-in-mir-1262-regulatory-region-confers-the-risk-of-lung-cancer-in-chinese-population
#10
Kaipeng Xie, Mengxi Chen, Meng Zhu, Cheng Wang, Na Qin, Cheng Liang, Ci Song, Juncheng Dai, Guangfu Jin, Hongbing Shen, Dongxing Lin, Hongxia Ma, Zhibin Hu
It has been proposed that the majority of disease-associated loci identified by genome-wide association studies (GWAS) are enriched in non-coding regions, such as the promoter, enhancer or non-coding RNA genes. Thus, we performed a two-stage case-control study to systematically evaluate the association of genetic variants in miRNA regulatory regions (promoter and enhancer) with lung cancer risk in 7,763 subjects (discovery stage: 2,331 cases and 3,077 controls; validation stage: 1,065 cases and 1,290 controls)...
May 16, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28506304/characterization-of-genetic-aberrations-in-a-single-case-of-metastatic-thymic-adenocarcinoma
#11
Yeonghun Lee, Sehhoon Park, Se-Hoon Lee, Hyunju Lee
BACKGROUND: Thymic adenocarcinoma is an extremely rare subtype of thymic epithelial tumors. Due to its rarity, there is currently no sequencing approach for thymic adenocarcinoma. METHODS: We performed whole exome and transcriptome sequencing on a case of thymic adenocarcinoma and performed subsequent validation using Sanger sequencing. RESULTS: The case of thymic adenocarcinoma showed aggressive behaviors with systemic bone metastases. We identified a high incidence of genetic aberrations, which included somatic mutations in RNASEL, PEG10, TNFSF15, TP53, TGFB2, and FAT1...
May 15, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28504724/single-cell-transcriptomics-uncovers-distinct-molecular-signatures-of-stem-cells-in-chronic-myeloid-leukemia
#12
Alice Giustacchini, Supat Thongjuea, Nikolaos Barkas, Petter S Woll, Benjamin J Povinelli, Christopher A G Booth, Paul Sopp, Ruggiero Norfo, Alba Rodriguez-Meira, Neil Ashley, Lauren Jamieson, Paresh Vyas, Kristina Anderson, Åsa Segerstolpe, Hong Qian, Ulla Olsson-Strömberg, Satu Mustjoki, Rickard Sandberg, Sten Eirik W Jacobsen, Adam J Mead
Recent advances in single-cell transcriptomics are ideally placed to unravel intratumoral heterogeneity and selective resistance of cancer stem cell (SC) subpopulations to molecularly targeted cancer therapies. However, current single-cell RNA-sequencing approaches lack the sensitivity required to reliably detect somatic mutations. We developed a method that combines high-sensitivity mutation detection with whole-transcriptome analysis of the same single cell. We applied this technique to analyze more than 2,000 SCs from patients with chronic myeloid leukemia (CML) throughout the disease course, revealing heterogeneity of CML-SCs, including the identification of a subgroup of CML-SCs with a distinct molecular signature that selectively persisted during prolonged therapy...
May 15, 2017: Nature Medicine
https://www.readbyqxmd.com/read/28504715/human-dbr1-modulates-the-recycling-of-snrnps-to-affect-alternative-rna-splicing-and-contributes-to-the-suppression-of-cancer-development
#13
B Han, H K Park, T Ching, J Panneerselvam, H Wang, Y Shen, J Zhang, L Li, R Che, L Garmire, P Fei
The contribution of RNA processing to tumorigenesis is understudied. Here, we report that the human RNA debranching enzyme (hDBR1), when inappropriately regulated, induces oncogenesis by causing RNA processing defects, for example, splicing defects. We found that wild-type p53 and hypoxia-inducible factor 1 co-regulate hDBR1 expression, and insufficient hDBR1 leads to a higher rate of exon skipping. Transcriptomic sequencing confirmed the effect of hDBR1 on RNA splicing, and metabolite profiling supported the observation that neoplasm is triggered by a decrease in hDBR1 expression both in vitro and in vivo...
May 15, 2017: Oncogene
https://www.readbyqxmd.com/read/28504695/epigenetic-pathway-inhibitors-represent-potential-drugs-for-treating-pancreatic-and-bronchial-neuroendocrine-tumors
#14
K E Lines, M Stevenson, P Filippakopoulos, S Müller, H E Lockstone, B Wright, S Grozinsky-Glasberg, A B Grossman, S Knapp, D Buck, C Bountra, R V Thakker
Cancer is associated with alterations in epigenetic mechanisms such as histone modifications and methylation of DNA, and inhibitors targeting epigenetic mechanisms represent a novel class of anti-cancer drugs. Neuroendocrine tumors (NETs) of the pancreas (PNETs) and bronchus (BNETs), which may have 5-year survivals of <50% and as low as 5%, respectively, represent targets for such drugs, as >40% of PNETs and ~35% of BNETs have mutations of the multiple endocrine neoplasia type 1 (MEN1) gene, which encodes menin that modifies histones by interacting with histone methyltransferases...
May 15, 2017: Oncogenesis
https://www.readbyqxmd.com/read/28504647/identification-of-a-nucleoside-analog-active-against-adenosine-kinase-expressing-plasma-cell-malignancies
#15
Utthara Nayar, Jouliana Sadek, Jonathan Reichel, Denise Hernandez-Hopkins, Gunkut Akar, Peter J Barelli, Michelle A Sahai, Hufeng Zhou, Jennifer Totonchy, David Jayabalan, Ruben Niesvizky, Ilaria Guasparri, Duane Hassane, Yifang Liu, Shizuko Sei, Robert H Shoemaker, J David Warren, Olivier Elemento, Kenneth M Kaye, Ethel Cesarman
Primary effusion lymphoma (PEL) is a largely incurable malignancy of B cell origin with plasmacytic differentiation. Here, we report the identification of a highly effective inhibitor of PEL. This compound, 6-ethylthioinosine (6-ETI), is a nucleoside analog with toxicity to PEL in vitro and in vivo, but not to other lymphoma cell lines tested. We developed and performed resistome analysis, an unbiased approach based on RNA sequencing of resistant subclones, to discover the molecular mechanisms of sensitivity...
May 15, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28501728/effects-of-fine-air-particulates-on-gene-expression-in-non-small-cell-lung-cancer
#16
Biao Yang, Xinming Li, Dongmei Chen, Chunling Xiao
PURPOSE: Airborne particulate matter smaller than 2.5μm (PM2.5) has been shown to induce adverse health effects through various mechanisms. However, its effects on gene expression in non-small-cell lung cancer (NSCLC) remain undefined. The aim of this study was to analyze the expression profile of PM2.5-induced adverse health effects on human. MATERIALS AND METHODS: We performed RNA sequencing to elucidate key molecular effects of PM2.5 collected from Shenyang China, to identify potential diagnostic markers or therapeutic targets, and further validated these differences in gene expression by using quantitative PCR in A549 and H1299 human non-small-cell lung cancer cell lines...
May 11, 2017: Advances in Medical Sciences
https://www.readbyqxmd.com/read/28498804/increased-s100a15-expression-and-decreased-dna-methylation-of-its-gene-promoter-are-involved-in-high-metastasis-potential-and-poor-outcome-of-lung-adenocarcinoma
#17
Yung-Che Chen, Meng-Chih Lin, Chang-Chun Hsiao, Yi-Xin Zheng, Kuang-Den Chen, Ming-Tse Sung, Chung-Jen Chen, Ting-Ya Wang, Yong-Yong Lin, Huang-Chih Chang, Yu-Mu Chen, Jen-Chieh Chang
PURPOSE: This study aims to determine the functional role of S100A15 and its promoter DNA methylation patterns in lung cancer progression. EXPERIMENTAL DESIGN: We analyzed 178 formalin-fixed paraffin embedded specimens from lung cancer patients, including 24 early stage and 91 advanced stage adenocarcinoma. S100A15 protein expression was evaluated by immunohistochemistry stain, and its DNA methylation levels were measured by pyrosequencing. RESULTS: S100A15 nuclear staining was increased in lung adenocarcinoma patients with distant metastasis versus those without distant metastasis...
April 24, 2017: Oncotarget
https://www.readbyqxmd.com/read/28498392/the-flightless-i-protein-interacts-with-rna-binding-proteins-and-is-involved-in-the-genome-wide-mrna-post-transcriptional-regulation-in-lung-carcinoma-cells
#18
Cuihua Wang, Kezhi Chen, Shengyou Liao, Wei Gu, Xinlei Lian, Jing Zhang, Xuejuan Gao, Xiaohui Liu, Tong Wang, Qing-Yu He, Gong Zhang, Langxia Liu
The flightless I protein (FLII) belongs to the gelsolin family. Its function has been associated with actin remodeling, embryonic development, wound repair, and more recently with cancer. The structure of FLII is characterized by the N-terminal leucine-rich repeats (LRR) and C-terminal gesolin related repeated units that are both protein-protein inter-action domains, suggesting that FLII may exert its function by interaction with other proteins. Therefore, systematic study of protein interactions of FLII in cells is important for the understanding of FLII functions...
May 11, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28497783/bliss-is-a-versatile-and-quantitative-method-for-genome-wide-profiling-of-dna-double-strand-breaks
#19
Winston X Yan, Reza Mirzazadeh, Silvano Garnerone, David Scott, Martin W Schneider, Tomasz Kallas, Joaquin Custodio, Erik Wernersson, Yinqing Li, Linyi Gao, Yana Federova, Bernd Zetsche, Feng Zhang, Magda Bienko, Nicola Crosetto
Precisely measuring the location and frequency of DNA double-strand breaks (DSBs) along the genome is instrumental to understanding genomic fragility, but current methods are limited in versatility, sensitivity or practicality. Here we present Breaks Labeling In Situ and Sequencing (BLISS), featuring the following: (1) direct labelling of DSBs in fixed cells or tissue sections on a solid surface; (2) low-input requirement by linear amplification of tagged DSBs by in vitro transcription; (3) quantification of DSBs through unique molecular identifiers; and (4) easy scalability and multiplexing...
May 12, 2017: Nature Communications
https://www.readbyqxmd.com/read/28497172/deep-intronic-mutations-and-human-disease
#20
REVIEW
Rita Vaz-Drago, Noélia Custódio, Maria Carmo-Fonseca
Next-generation sequencing has revolutionized clinical diagnostic testing. Yet, for a substantial proportion of patients, sequence information restricted to exons and exon-intron boundaries fails to identify the genetic cause of the disease. Here we review evidence from mRNA analysis and entire genomic sequencing indicating that pathogenic mutations can occur deep within the introns of over 75 disease-associated genes. Deleterious DNA variants located more than 100 base pairs away from exon-intron junctions most commonly lead to pseudo-exon inclusion due to activation of non-canonical splice sites or changes in splicing regulatory elements...
May 12, 2017: Human Genetics
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