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https://www.readbyqxmd.com/read/29778876/genome-sequence-analysis-of-a-novel-bacillus-thuringiensis-strain-blb406-active-against-aedes-aegypti-larvae-a-novel-potential-bioinsecticide
#1
Raida Zribi Zghal, Kais Ghedira, Jihen Elleuch, Marwa Kharrat, Slim Tounsi
BLB406 is a novel isolate of Bacillus thuringiensis with a larvicidal activity against Aedes aegypti larvae. It displays original plasmidic and crystal protein patterns. The present work reported molecular and bioinformatic analyses for the genome sequence of BLB406 using MiSeq Illumina next-generation sequencing technology. The reads were assembled by Velvet tool. Using RAST program and PGAAP the genome of BLB406 strain was shown to contain 6297 genes corresponding to 5924 protein coding sequences. The BLB406 genome investigation with BtToxin_scanner program shows that this strain has an original and different combination of toxins compared to the published ones: five cry genes (cry11, cry22, cry2, cry60, cry64) and two distinct vegetative insecticidal vip4 genes...
May 17, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29771315/palimpsest-an-r-package-for-studying-mutational-and-structural-variant-signatures-along-clonal-evolution-in-cancer
#2
Jayendra Shinde, Quentin Bayard, Sandrine Imbeaud, Théo Z Hirsch, Feng Liu, Victor Renault, Jessica Zucman-Rossi, Eric Letouzé
Summary: Cancer genomes are altered by various mutational processes and, like palimpsests, bear the signatures of these different processes. The Palimpsest R package provides a complete workflow for the characterization and visualization of mutational signatures and their evolution along tumor development. The package covers a wide range of functions for extracting both base substitution and structural variant signatures, inferring the clonality of each alteration and analyzing the evolution of mutational processes between early clonal and late subclonal events...
May 16, 2018: Bioinformatics
https://www.readbyqxmd.com/read/29769291/key-transport-and-ammonia-recycling-genes-involved-in-aphid-symbiosis-respond-to-host-plant-specialization
#3
Dohyup Kim, Bushra F Minhas, Hongmei Li-Byarlay, Allison K Hansen
Microbes are known to influence insect-plant interactions; however, it is unclear if host-plant diet influences the regulation of nutritional insect symbioses. The pea aphid, Acyrthosiphon pisum , requires its nutritional endosymbiont, Buchnera , for the production of essential amino acids. We hypothesize that key aphid genes that regulate the nutritional symbioses respond to host-plant diet when aphids feed on a specialized (alfalfa) compared to a universal host-plant diet (fava), which vary in amino acid profiles...
May 16, 2018: G3: Genes—Genomes—Genetics
https://www.readbyqxmd.com/read/29764005/identification-of-novel-functional-variants-of-sin3a-and-srsf1-among-somatic-variants-in-acute-myeloid-leukemia-patients
#4
Jae-Woong Min, Youngil Koh, Dae-Yoon Kim, Hyung-Lae Kim, Jeong A Han, Yu-Jin Jung, Sung-Soo Yoon, Sun Shim Choi
The advent of massively parallel sequencing, also called nextgeneration sequencing (NGS), has dramatically influenced cancer genomics by accelerating the identification of novel molecular alterations. Using a whole genome sequencing (WGS) approach, we identified somatic coding and noncoding variants that may contribute to leukemogenesis in 11 adult Korean acute myeloid leukemia (AML) patients, with serial tumor samples (primary and relapse) available for 5 of them; somatic variants were identified in 187 AML-related genes, including both novel (SIN3A, C10orf53, PTPRR, and RERGL) and well-known (NPM1, RUNX1, and CEPBA) AMLrelated genes...
May 15, 2018: Molecules and Cells
https://www.readbyqxmd.com/read/29761480/whole-exome-sequencing-identifies-plec-exo5-and-dnah7-as-novel-susceptibility-genes-in-testicular-cancer
#5
Beatriz Paumard-Hernández, Oriol Calvete, Lucia Inglada Pérez, Héctor Tejero, Fátima Al-Shahrour, Guillermo Pita, Alicia Barroso, Juan Carlos Triviño, Miguel Urioste, Claudia Valverde, Enrique González Billalabeitia, Vanesa Quiroga, Juan Francisco Rodríguez Moreno, Antonio Fernández Aramburo, Cristina López, Pablo Maroto, Javier Sastre, María José Juan Fita, Ignacio Duran, Isabel Lorenzo-Lorenzo, Patricia Iranzo, Xavier García Del Muro, Silverio Ros, Francisco Zambrana, Ana María Autran, Javier Benítez
Testicular germ cell tumors (TGCTs) are a clinically and pathologically heterogeneous disease, and little is known of its genetic basis. Only low susceptibility risk loci have been identified for both sporadic and familial cases. Therefore, we tried to identify new susceptibility genes responsible for familial testicular cancer that may contribute to increasing our knowledge about the genetic basis of the disease. Nineteen Spanish families with at least two affected individuals with TGCT were selected. WES was performed on those individuals using an Illumina Hiseq2000 sequencing platform...
May 15, 2018: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29754820/interfaces-of-malignant-and-immunologic-clonal-dynamics-in-ovarian-cancer
#6
Allen W Zhang, Andrew McPherson, Katy Milne, David R Kroeger, Phineas T Hamilton, Alex Miranda, Tyler Funnell, Nicole Little, Camila P E de Souza, Sonya Laan, Stacey LeDoux, Dawn R Cochrane, Jamie L P Lim, Winnie Yang, Andrew Roth, Maia A Smith, Julie Ho, Kane Tse, Thomas Zeng, Inna Shlafman, Michael R Mayo, Richard Moore, Henrik Failmezger, Andreas Heindl, Yi Kan Wang, Ali Bashashati, Diljot S Grewal, Scott D Brown, Daniel Lai, Adrian N C Wan, Cydney B Nielsen, Curtis Huebner, Basile Tessier-Cloutier, Michael S Anglesio, Alexandre Bouchard-Côté, Yinyin Yuan, Wyeth W Wasserman, C Blake Gilks, Anthony N Karnezis, Samuel Aparicio, Jessica N McAlpine, David G Huntsman, Robert A Holt, Brad H Nelson, Sohrab P Shah
High-grade serous ovarian cancer (HGSC) exhibits extensive malignant clonal diversity with widespread but non-random patterns of disease dissemination. We investigated whether local immune microenvironment factors shape tumor progression properties at the interface of tumor-infiltrating lymphocytes (TILs) and cancer cells. Through multi-region study of 212 samples from 38 patients with whole-genome sequencing, immunohistochemistry, histologic image analysis, gene expression profiling, and T and B cell receptor sequencing, we identified three immunologic subtypes across samples and extensive within-patient diversity...
May 7, 2018: Cell
https://www.readbyqxmd.com/read/29753700/spectrum-and-prevalence-of-genetic-predisposition-in-medulloblastoma-a-retrospective-genetic-study-and-prospective-validation-in-a-clinical-trial-cohort
#7
Sebastian M Waszak, Paul A Northcott, Ivo Buchhalter, Giles W Robinson, Christian Sutter, Susanne Groebner, Kerstin B Grund, Laurence Brugières, David T W Jones, Kristian W Pajtler, A Sorana Morrissy, Marcel Kool, Dominik Sturm, Lukas Chavez, Aurelie Ernst, Sebastian Brabetz, Michael Hain, Thomas Zichner, Maia Segura-Wang, Joachim Weischenfeldt, Tobias Rausch, Balca R Mardin, Xin Zhou, Cristina Baciu, Christian Lawerenz, Jennifer A Chan, Pascale Varlet, Lea Guerrini-Rousseau, Daniel W Fults, Wiesława Grajkowska, Peter Hauser, Nada Jabado, Young-Shin Ra, Karel Zitterbart, Suyash S Shringarpure, Francisco M De La Vega, Carlos D Bustamante, Ho-Keung Ng, Arie Perry, Tobey J MacDonald, Pablo Hernáiz Driever, Anne E Bendel, Daniel C Bowers, Geoffrey McCowage, Murali M Chintagumpala, Richard Cohn, Timothy Hassall, Gudrun Fleischhack, Tone Eggen, Finn Wesenberg, Maria Feychting, Birgitta Lannering, Joachim Schüz, Christoffer Johansen, Tina V Andersen, Martin Röösli, Claudia E Kuehni, Michael Grotzer, Kristina Kjaerheim, Camelia M Monoranu, Tenley C Archer, Elizabeth Duke, Scott L Pomeroy, Redmond Shelagh, Stephan Frank, David Sumerauer, Wolfram Scheurlen, Marina V Ryzhova, Till Milde, Christian P Kratz, David Samuel, Jinghui Zhang, David A Solomon, Marco Marra, Roland Eils, Claus R Bartram, Katja von Hoff, Stefan Rutkowski, Vijay Ramaswamy, Richard J Gilbertson, Andrey Korshunov, Michael D Taylor, Peter Lichter, David Malkin, Amar Gajjar, Jan O Korbel, Stefan M Pfister
BACKGROUND: Medulloblastoma is associated with rare hereditary cancer predisposition syndromes; however, consensus medulloblastoma predisposition genes have not been defined and screening guidelines for genetic counselling and testing for paediatric patients are not available. We aimed to assess and define these genes to provide evidence for future screening guidelines. METHODS: In this international, multicentre study, we analysed patients with medulloblastoma from retrospective cohorts (International Cancer Genome Consortium [ICGC] PedBrain, Medulloblastoma Advanced Genomics International Consortium [MAGIC], and the CEFALO series) and from prospective cohorts from four clinical studies (SJMB03, SJMB12, SJYC07, and I-HIT-MED)...
May 9, 2018: Lancet Oncology
https://www.readbyqxmd.com/read/29753010/determination-of-the-mutational-landscape-in-taiwanese-patients-with-papillary-thyroid-cancer-by-whole-exome-sequencing
#8
Chun-Chi Chang, Ya-Sian Chang, Hsi-Yuan Huang, Kun-Tu Yeh, Ta-Chih Liu, Jan-Gowth Chang
Among women in Taiwan, thyroid cancer is the fifth most common malignant neoplasia. However, genomic profiling of papillary thyroid cancer (PTC) cases from Taiwan has not been attempted previously. We used whole-exome sequencing to identify mutations in a cohort of 19 PTC patients. Sequencing was performed using the Illumina system; Sanger sequencing was used to validate all identified mutations. We identified new somatic mutations in APC, DICER1, LRRC8D and NDRG1. We also found somatic mutations in ARID5A, CREB3L2, MDM4, PPP2R5A and TFPT; mutations in these genes had been found previously in other tumors, but had not been described previously in PTC...
May 9, 2018: Human Pathology
https://www.readbyqxmd.com/read/29748005/genomic-alterations-of-plasma-cell-free-dnas-in-small-cell-lung-cancer-and-their-clinical-relevance
#9
Meijun Du, Jonathan Thompson, Hannah Fisher, Peng Zhang, Chiang-Ching Huang, Liang Wang
OBJECTIVES: To identify genomic variations in cell-free DNA (cfDNA) and evaluate their clinical utility in small cell lung cancer (SCLC). MATERIALS AND METHODS: We performed whole genome sequencing using plasma cfDNAs derived from 24 SCLC patients for copy number variation (CNV) analysis, and targeted sequencing using 17 pairs of plasma cfDNA and their matched gDNA for mutation analysis. We defined somatic mutations by comparing cfDNA to its matched gDNA with 5% variant alleles as the cutoff for mutation calls...
June 2018: Lung Cancer: Journal of the International Association for the Study of Lung Cancer
https://www.readbyqxmd.com/read/29747023/assessment-of-dna-repair-susceptibility-genes-identified-by-whole-exome-sequencing-in-head-and-neck-cancer
#10
Raima Das, Sharbadeb Kundu, Shaheen Laskar, Yashmin Choudhury, Sankar Kumar Ghosh
Head and neck cancer (HNC), the sixth most common cancer globally, stands second in India. In Northeast (NE) India, it is the sixth most common cause of death in males and seventh in females. Prolonged tobacco and alcohol consumption constitute the major etiological factors for HNC development, which induce DNA damage. Therefore, DNA repair pathway is a crucial system in maintaining genomic integrity and preventing carcinogenesis. The present work was aimed to predict the consequence of significant germline variants of the DNA repair genes in disease predisposition...
April 26, 2018: DNA Repair
https://www.readbyqxmd.com/read/29740169/gain-of-function-mutations-in-dnmt3a-in-patients-with-paraganglioma
#11
Laura Remacha, Maria Currás-Freixes, Raúl Torres-Ruiz, Francesca Schiavi, Rafael Torres-Pérez, Bruna Calsina, Rocío Letón, Iñaki Comino-Méndez, Juan M Roldán-Romero, Cristina Montero-Conde, María Santos, Lucía Inglada Pérez, Guillermo Pita, María R Alonso, Emiliano Honrado, Susana Pedrinaci, Benedicto Crespo-Facorro, Antonio Percesepe, Maurizio Falcioni, Sandra Rodríguez-Perales, Esther Korpershoek, Santiago Ramón-Maiques, Giuseppe Opocher, Cristina Rodríguez-Antona, Mercedes Robledo, Alberto Cascón
PURPOSE: The high percentage of patients carrying germline mutations makes pheochromocytomas/paragangliomas the most heritable of all tumors. However, there are still cases unexplained by mutations in the known genes. We aimed to identify the genetic cause of disease in patients strongly suspected of having hereditary tumors. METHODS: Whole-exome sequencing was applied to the germlines of a parent-proband trio. Genome-wide methylome analysis, RNA-seq, CRISPR/Cas9 gene editing, and targeted sequencing were also performed...
May 8, 2018: Genetics in Medicine: Official Journal of the American College of Medical Genetics
https://www.readbyqxmd.com/read/29739316/a-genome-wide-survey-of-mutations-in-the-jurkat-cell-line
#12
Louis Gioia, Azeem Siddique, Steven R Head, Daniel R Salomon, Andrew I Su
BACKGROUND: The Jurkat cell line has an extensive history as a model of T cell signaling. But at the turn of the 21st century, some expression irregularities were observed, raising doubts about how closely the cell line paralleled normal human T cells. While numerous expression deficiencies have been described in Jurkat, genetic explanations have only been provided for a handful of defects. RESULTS: Here, we report a comprehensive catolog of genomic variation in the Jurkat cell line based on whole-genome sequencing...
May 8, 2018: BMC Genomics
https://www.readbyqxmd.com/read/29736260/mutation-load-estimation-model-as-a-predictor-of-the-response-to-cancer-immunotherapy
#13
Guan-Yi Lyu, Yu-Hsuan Yeh, Yi-Chen Yeh, Yu-Chao Wang
The determination of the mutation load, a total number of nonsynonymous point mutations, by whole-exome sequencing was shown to be useful in predicting the treatment responses to cancer immunotherapy. However, this technique is expensive and time-consuming, which hampers its application in clinical practice. Therefore, the objective of this study was to construct a mutation load estimation model for lung adenocarcinoma, using a small set of genes, as a predictor of the immunotherapy treatment response. Using the somatic mutation data downloaded from The Cancer Genome Atlas (TCGA) database, a computational framework was developed...
2018: NPJ Genomic Medicine
https://www.readbyqxmd.com/read/29734189/downregulated-pitx1-modulated-by-mir-19a-3p-promotes-cell-malignancy-and-predicts-a-poor-prognosis-of-gastric-cancer-by-affecting-transcriptionally-activated-pdcd5
#14
Fengchang Qiao, Pihai Gong, Yunwei Song, Xiaohui Shen, Xianwei Su, Yiping Li, Huazhang Wu, Zhujiang Zhao, Hong Fan
BACKGROUND/AIMS: PITX1 has been identified as a potential tumor-suppressor gene in several malignant tumors. The molecular mechanism underlying PITX1, particularly its function as a transcription factor regulating gene expression during tumorigenesis, is still poorly understood. METHODS: The expression level and location of PITX1 were determined by quantitative reverse transcription PCR (qRT-PCR) and immunohistochemical staining in gastric cancer (GC). The effect of PITX1 on the GC cell proliferation and tumorigenesis was analyzed in vitro and in vivo...
May 3, 2018: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29731959/identification-of-neoepitopes-recognized-by-tumor-infiltrating-lymphocytes-tils-from-patients-with-glioma
#15
Davide Valentini, Martin Rao, Qingda Meng, Anna von Landenberg, Jiri Bartek, Georges Sinclair, Georgia Paraschoudi, Elke Jäger, Inti Harvey-Peredo, Ernest Dodoo, Markus Maeurer
Neoepitope-specific T-cell responses have been shown to induce durable clinical responses in patients with advanced cancers. We explored the recognition patterns of tumor-infiltrating T lymphocytes (TILs) from patients with glioblastoma multiforme (GBM), the most fatal form of tumors of the central nervous system. Whole-genome sequencing was used for generating DNA sequences representing the entire spectrum of 'private' somatic mutations in GBM tumors from five patients, followed by 15-mer peptide prediction and subsequent peptide synthesis...
April 13, 2018: Oncotarget
https://www.readbyqxmd.com/read/29727589/genome-sequencing-in-the-clinic-the-past-present-and-future-of-genomic-medicine
#16
Jeremy W Prokop, Thomas May, Kim Strong, Stephanie M Bilinovich, Caleb Bupp, Surender Rajasekaran, Elizabeth A Worthey, Jozef Lazar
Genomic sequencing has undergone massive expansion in the past ten years, opening the door from being a rarely used research tool into an approach that has broad applications in a clinical setting. From rare disease to cancer, genomics is transforming our knowledge of biology. The transition from targeted gene sequencing, to whole exome sequencing, to whole genome sequencing has only been made possible due to rapid advancements in technologies and informatics that have plummeted the cost per base of DNA sequencing and analysis...
May 4, 2018: Physiological Genomics
https://www.readbyqxmd.com/read/29720381/whole-exome-and-transcriptome-analyses-integrated-with-microenvironmental-immune-signatures-of-lung-squamous-cell-carcinoma
#17
Jeong-Sun Seo, Ji Won Lee, Ahreum Kim, Jong-Yeon Shin, Yoo Jin Jung, Sae Bom Lee, Yoon Ho Kim, Samina Park, Hyun Joo Lee, In-Kyu Park, Chang Hyun Kang, Ji-Young Yun, Jihye Kim, Young T Kim
The immune microenvironment in lung squamous cell carcinoma (LUSC) is not well understood, with interactions between the host immune system and the tumor, as well as the molecular pathogenesis of LUSC, awaiting better characterization. To date, no molecularly targeted agents have been developed for LUSC treatment. Identification of predictive and prognostic biomarkers for LUSC could help optimize therapy decisions. We sequenced whole exomes and RNA from 101 tumors and matched noncancer control Korean samples...
May 2, 2018: Cancer Immunology Research
https://www.readbyqxmd.com/read/29717702/-germ-line-mutations-causing-paediatric-cancer-predisposition-syndromes-are-common-in-children-and-adolescents-with-cancer
#18
Ulrik Kristoffer Stoltze, Anna Byrjalsen, Lisa Lyngsie Hjalgrim, Ayo Wahlberg, Ramneek Gupta, Anne-Marie Gerdes, Karin Wadt, Kjeld Schmiegelow
Germ line mutations causing paediatric cancer predisposition syndromes (PCPSs) are more common than previously anticipated and are now recognised as a significant contributor to the incidence of childhood cancer. Advances in and increased clinical application of next-generation sequencing technologies have led to a rise in paediatric patients undergoing whole genome sequencing (WGS). This review focuses on the potential syndromes/diagnoses, which WGS may reveal in patients with childhood cancers, and highlights the clinical and psychosocial impact of PCPSs...
April 23, 2018: Ugeskrift for Laeger
https://www.readbyqxmd.com/read/29717450/identification-and-use-of-personalized-genomic-markers-for-monitoring-circulating-tumor-dna
#19
Yilun Chen, Anthony M George, Eleonor Olsson, Lao H Saal
Digital PCR techniques are ideally suited for accurately quantifying trace amounts of target DNA sequences, such as tumor-derived mutant DNA that is present in the blood circulation of patients with cancer. Here, we describe an approach marrying low-coverage whole-genome sequencing of tumor tissues, to enumerate chromosomal rearrangement breakpoints, together with droplet digital PCR (ddPCR)-based personalized rearrangement assays to cost-effectively monitor circulating tumor DNA levels at multiple time-points during the clinical course...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29713327/impact-of-interferon-%C3%AE-receptor-1-promoter-polymorphisms-on-the-transcriptome-of-the-hepatitis-b-virus-associated-hepatocellular-carcinoma
#20
Timokratis Karamitros, George Papatheodoridis, Dimitrios Paraskevis, Angelos Hatzakis, Jean L Mbisa, Urania Georgopoulou, Paul Klenerman, Gkikas Magiorkinis
Background and aims: Genetic polymorphisms within the promoter of interferon-α receptor type-1 (IFNAR1) have been associated with the susceptibility to and the outcome of chronic hepatitis B virus (HBV) infection. However, the impact of these polymorphisms in the transcriptome of the HBV-associated hepatocellular carcinoma (HCC) remains largely unexplored. Methods: Using whole-genome and exome sequencing data from The Cancer Genome Atlas project, we characterized three single-nucleotide polymorphisms (SNPs: -568G/C, -408C/T, -3C/T) and one variable number tandem repeat [VNTR: -77(GT)n] within the IFNAR1 promoter sequence in 49 HCC patients...
2018: Frontiers in Immunology
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