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https://www.readbyqxmd.com/read/27935989/brcaness-and-prognosis-in-triple-negative-breast-cancer-patients-treated-with-neoadjuvant-chemotherapy
#1
Hirokazu Tanino, Yoshimasa Kosaka, Hiroshi Nishimiya, Youko Tanaka, Naoko Minatani, Mariko Kikuchi, Akiko Shida, Mina Waraya, Hiroshi Katoh, Takumo Enomoto, Norihiko Sengoku, Sabine Kajita, Robert M Hoffman, Masahiko Watanabe
BRCAness is defined as the set of traits in which BRCA1 dysfunction, arising from gene mutation, methylation or deletion, results in DNA repair deficiency. In the present study, we addressed BRCAness, therapeutic efficacy, recurrence, and survival in patients with triple negative breast cancer (TNBC) who were treated with neoadjuvant chemotherapy at Kitasato University Hospital, Japan, between April 2006 and October 2012. BRCAness was determined by preoperative core needle biopsy (CNB) specimens and surgical specimens...
2016: PloS One
https://www.readbyqxmd.com/read/27935865/bronchial-airway-gene-expression-signatures-in-mouse-lung-squamous-cell-carcinoma-and-their-modulation-by-cancer-chemopreventive-agents
#2
Donghai Xiong, Jing Pan, Qi Zhang, Eva Szabo, Mark Steven Miller, Ronald A Lubet, Ming You, Yian Wang
Due to exposure to environmental toxicants, a "field cancerization" effect occurs in the lung resulting in the development of a field of initiated but morphologically normal appearing cells in the damaged epithelium of bronchial airways with dysregulated gene expression patterns. Using a mouse model of lung squamous cell carcinoma (SCC), we performed transcriptome sequencing (RNA-Seq) to profile bronchial airway gene expression and found activation of the PI3K and Myc signaling networks in cytologically normal bronchial airway epithelial cells of mice with preneopastic lung SCC lesions, which was reversed by treatment with the PI3K Inhibitor XL-147 and pioglitazone, respectively...
December 7, 2016: Oncotarget
https://www.readbyqxmd.com/read/27935861/microrna-203-predicts-human-survival-after-resection-of-colorectal-liver-metastasis
#3
T Peter Kingham, Hoang C B Nguyen, Jian Zheng, Ioannis T Konstantinidis, Eran Sadot, Jinru Shia, Deborah Kuk, Steven Zhang, Leonard Saltz, Michael I D'Angelica, William R Jarnagin, Hani Goodarzi, Sohail F Tavazoie
BACKGROUND: Resection of colorectal liver metastasis (CRLM) can be curative. Predicting which patients may benefit from resection, however, remains challenging. Some microRNAs (miRNAs) become deregulated in cancers and contribute to cancer progression. We hypothesized that miRNA expression can serve as a prognostic marker of survival after CRLM resection. RESULTS: MiR-203 was significantly overexpressed in tumors of short-term survivors compared to long-term survivors...
December 7, 2016: Oncotarget
https://www.readbyqxmd.com/read/27935859/histone-deacetylase-inhibitors-inhibit-metastasis-by-restoring-a-tumor-suppressive-microrna-150-in-advanced-cutaneous-t-cell-lymphoma
#4
Fumito Abe, Akihiro Kitadate, Sho Ikeda, Junsuke Yamashita, Hiroki Nakanishi, Naoto Takahashi, Chikara Asaka, Kazuaki Teshima, Tomomitsu Miyagaki, Makoto Sugaya, Hiroyuki Tagawa
Tumor suppressive microRNA (miR)-150 inhibits metastasis by combining with the C-C chemokine receptor 6 (CCR6) "seed sequence" mRNA of the 3'-untranslated region (3'-UTR) in advanced cutaneous T-cell lymphoma (CTCL). Because the histone deacetylase inhibitor (HDACI) vorinostat showed excellent outcomes for treating advanced CTCL, HDACIs may reduce the metastasis of CTCL by targeting miR-150 and/ or CCR6. To examine whether these candidate molecules are essential HDACI targets in advanced CTCL, we used the My-La, HH, and HUT78 CTCL cell lines for functional analysis because we previously demonstrated that their xenografts in NOD/Shi-scid IL-2γnul mice (CTCL mice) induced multiple metastases...
December 7, 2016: Oncotarget
https://www.readbyqxmd.com/read/27935608/a-peptide-based-synthetic-transcription-factor-selectively-down-regulates-the-proto-oncogene-cfos-in-tumour-cells-and-inhibits-proliferation
#5
Madhumita Chakraborty, Siddhartha Roy
Selectively regulating genes is an important goal in Chemical Biology. We report the development of a peptide-based synthetic transcription factor which binds the targeted DNA sequence with high affinity and single base-pair discrimination capability. When delivered inside a tumor cell, it regulated targeted genes selectively and inhibited cell proliferation.
December 9, 2016: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/27935156/casp9-germline-mutation-in-a-family-with-multiple-brain-tumors
#6
Michael W Ronellenfitsch, Oh Ji Eun, Kaishi Satomi, Koichiro Sumi, Patrick N Harter, Joachim P Steinbach, Jörg Felsberg, David Capper, Catherine Voegele, Geoffroy Durand, James McKay, Florence Le Calvez-Kelm, Jens Schittenhelm, Barbara Klink, Michel Mittelbronn, Hiroko Ohgaki
We report a novel CASP9 germline mutation that may increase susceptibility to the development of brain tumors. We identified this mutation in a family in which three brain tumors had developed within three generations, including two anaplastic astrocytomas occurring in cousins. The cousins were diagnosed at similar ages (29 and 31 years), and their tumors showed similar histological features. Genetic analysis revealed somatic IDH1 and TP53 mutations in both tumors. However, no germline TP53 mutations were detected, despite the fact that this family fulfills the criteria of Li-Fraumeni-like syndrome...
December 9, 2016: Brain Pathology
https://www.readbyqxmd.com/read/27934878/activating-cysteinyl-leukotriene-receptor-2-cysltr2-mutations-in-blue-nevi
#7
Inga Möller, Rajmohan Murali, Hansgeorg Müller, Thomas Wiesner, Louise A Jackett, Simone L Scholz, Ioana Cosgarea, Johannes Ap van de Nes, Antje Sucker, Uwe Hillen, Bastian Schilling, Annette Paschen, Heinz Kutzner, Arno Rütten, Martin Böckers, Richard A Scolyer, Dirk Schadendorf, Klaus G Griewank
Blue nevi are common melanocytic tumors arising in the dermal layer of the skin. Similar to uveal melanomas, blue nevi frequently harbor GNAQ and GNA11 mutations. Recently, recurrent CYSLTR2 and PLCB4 mutations were identified in uveal melanomas not harboring GNAQ or GNA11 mutations. All four genes (GNAQ, GNA11, CYSLTR2, and PLCB4) code for proteins involved in the same signaling pathway, which is activated by mutations in these genes. Given the related functional consequences of these mutations and the known genetic similarities between uveal melanoma and blue nevi, we analyzed a cohort of blue nevi to investigate whether CYSLTR2 and PLCB4 mutations occur in tumors lacking GNAQ or GNA11 mutations (as in uveal melanoma)...
December 9, 2016: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/27934877/overexpression-and-gene-amplification-of-pd-l1-in-cancer-cells-and-pd-l1-immune-cells-in-epstein-barr-virus-associated-gastric-cancer-the-prognostic-implications
#8
Ruri Saito, Hiroyuki Abe, Akiko Kunita, Hiroharu Yamashita, Yasuyuki Seto, Masashi Fukayama
Cancer cells use PD-L1 to evade antitumor immunity through interaction with programmed cell death protein 1 (PD-1) on T cells. Recent whole-genome sequence studies revealed frequent gene amplification of PD-L1 in Epstein-Barr virus-associated gastric cancer (EBVaGC). To investigate the significance of PD-L1 in cancer cells and their microenvironment in EBVaGC, we studied PD-L1 expression by analysis of the public database and immunohistochemistry with fluorescent in situ hybridization (FISH) of the PD-L1 gene...
December 9, 2016: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/27934110/molecular-imaging-biosensor-monitors-p53-sumoylation-in-cells-and-living-mice
#9
Thillai V Sekar, Kira Foygel, Rammohan Devulapally, Vineet Kumar, Sanjay Malhotra, Tarik F Massoud, Ramasamy Paulmurugan
Small molecule mediated stabilization of p53 tumor suppressor protein through sumoylation is a promising new strategy for improving cancer chemotherapy. A molecular tool that monitors p53 sumoylation status and expedites screening for drugs that enhance p53 sumoylation would be beneficial. We report a molecularly engineered reporter fragment complementation biosensor based on optical imaging of Firefly luciferase (FLuc), to quantitatively image p53 sumoylation and desumoylation in cells and living mice. We initially characterized this biosensor by successfully imaging sumoylation of several target proteins, achieving significant FLuc complementation for ERα (p < 0...
December 6, 2016: Analytical Chemistry
https://www.readbyqxmd.com/read/27933896/total-synthesis-and-in-vitro-anti-tumor-promoting-activities-of-racemic-acetophenone-monomers-from-acronychia-trifoliolata
#10
Chihiro Morita, Yukiko Kobayashi, Yohei Saito, Katsunori Miyake, Harukuni Tokuda, Nobutaka Suzuki, Eiichiro Ichiishi, Kuo-Hsiung Lee, Kyoko Nakagawa-Goto
Six acetophenone derivatives, acronyculatins I (1), J (2), K (3), L (4), N (5), and O (6), were recently isolated from Acronychia trifoliolata, and the structure of the known acronyculatin B (7) was revised. Because of the limited quantities of isolated products as well as their structure similarity, racemic acronyculatins I-L, N, O, and B (1-7) were synthesized to confirm their structures and to obtain sufficient material for biological evaluation. Trihydroxyacetophenone was converted to the target compounds by various sequences of hydroxy group protection, allylation or prenylation, and epoxidation followed by cyclization...
November 23, 2016: Journal of Natural Products
https://www.readbyqxmd.com/read/27933724/comparative-analysis-reveals-amino-acids-critical-for-anticancer-activity-of-peptide-cigb-552
#11
Soledad Astrada, Yolanda Gomez, Exequiel Barrera, Gonzalo Obal, Otto Pritsch, Sergio Pantano, Maribel G Vallespí, Mariela Bollati-Fogolín
Because of resistance development by cancer cells against current anticancer drugs, there is a considerable interest in developing novel antitumor agents. We have previously demonstrated that CIGB-552, a novel cell-penetrating synthetic peptide, was effective in reducing tumor size and increasing lifespan in tumor-bearing mice. Studies of protein-peptide interactions have shown that COMMD1 protein is a major mediator of CIGB-552 antitumor activity. Furthermore, a typical serine-protease degradation pattern for CIGB-552 in BALB/c mice serum was identified, yielding peptides which differ from CIGB-552 in size and physical properties...
November 2016: Journal of Peptide Science: An Official Publication of the European Peptide Society
https://www.readbyqxmd.com/read/27933315/immunogenicity-of-self-tumor-associated-proteins-is-enhanced-through-protein-truncation
#12
Tim Kottke, Kevin G Shim, Vanesa Alonso-Camino, Shane Zaidi, Rosa Maria Diaz, Jose Pulido, Jill Thompson, Karishma R Rajani, Laura Evgin, Elizabeth Ilett, Hardev Pandha, Kevin Harrington, Peter Selby, Alan Melcher, Richard Vile
We showed previously that therapy with Vesicular Stomatitis Virus (VSV) expressing tumor-associated proteins eradicates established tumors. We show here that when cellular cDNA were cloned into VSV which retained their own poly-A signal, viral species emerged in culture which had deleted the cellular poly-A signal and also contained a truncated form of the protein coding sequence. Typically, the truncation occurred such that a Tyrosine-encoding codon was converted into a STOP codon. We believe that the truncation of tumor-associated proteins expressed from VSV in this way occurred to preserve the ability of the virus to replicate efficiently...
2016: Molecular Therapy Oncolytics
https://www.readbyqxmd.com/read/27933313/genetic-engineering-of-chimeric-antigen-receptors-using-lamprey-derived-variable-lymphocyte-receptors
#13
Robert Moot, Sunil S Raikar, Lauren Fleischer, Melissa Querrey, Daniel E Tylawsky, Hirotomo Nakahara, Christopher B Doering, H Trent Spencer
Chimeric antigen receptors (CARs) are used to redirect effector cell specificity to selected cell surface antigens. Using CARs, antitumor activity can be initiated in patients with no prior tumor specific immunity. Although CARs have shown promising clinical results, the technology remains limited by the availability of specific cognate cell target antigens. To increase the repertoire of targetable tumor cell antigens we utilized the immune system of the sea lamprey to generate directed variable lymphocyte receptors (VLRs)...
2016: Molecular Therapy Oncolytics
https://www.readbyqxmd.com/read/27933111/aberrant-dna-hypermethylation-silenced-sox21-as1-gene-expression-and-its-clinical-importance-in-oral-cancer
#14
Cheng-Mei Yang, Tsung-Han Wang, Hung-Chih Chen, Sung-Chou Li, Ming-Chien Lee, Huei-Han Liou, Pei-Feng Liu, Yu-Kai Tseng, Yow-Ling Shiue, Luo-Ping Ger, Kuo-Wang Tsai
BACKGROUND: Long noncoding RNAs (lncRNAs) are more than 200 nucleotides in length and lack transcriptional ability. The biological function of lncRNAs in oral squamous cell carcinoma (OSCC) remains unclear. The aim of this study was to identify the dysfunction of lncRNA in OSCC. RESULTS: We analyzed the transcriptome profiles of human OSCC tissues and paired adjacent normal tissues from two patients through a next-generation sequencing approach. A total of 14 lncRNAs were upregulated (fold change ≥3) and 13 were downregulated (fold change ≤-3) in OSCC tissues compared with the adjacent normal tissues...
2016: Clinical Epigenetics
https://www.readbyqxmd.com/read/27932981/proton-pump-inhibitors-display-antitumor-effects-in-barrett-s-adenocarcinoma-cells
#15
Eduardo Chueca, Nadezda Apostolova, Juan V Esplugues, María A García-González, Ángel Lanas, Elena Piazuelo
Recent evidence has reported that proton pump inhibitors (PPIs) can exert antineoplastic effects through the disruption of pH homeostasis by inhibiting vacuolar ATPase (H(+)-VATPase), a proton pump overexpressed in several tumor cells, but this aspect has not been deeply investigated in EAC yet. In the present study, the expression of H(+)-VATPase was assessed through the metaplasia-dysplasia-adenocarcinoma sequence in Barrett's esophagus (BE) and the antineoplastic effects of PPIs and cellular mechanisms involved were evaluated in vitro...
2016: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/27932948/rna-editing-systemic-relevance-and-clue-to-disease-mechanisms
#16
REVIEW
Jochen C Meier, Svenja Kankowski, Heinz Krestel, Florian Hetsch
Recent advances in sequencing technologies led to the identification of a plethora of different genes and several hundreds of amino acid recoding edited positions. Changes in editing rates of some of these positions were associated with diseases such as atherosclerosis, myopathy, epilepsy, major depression disorder, schizophrenia and other mental disorders as well as cancer and brain tumors. This review article summarizes our current knowledge on that front and presents glycine receptor C-to-U RNA editing as a first example of disease-associated increased RNA editing that includes assessment of disease mechanisms of the corresponding gene product in an animal model...
2016: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/27932760/-satb1-promotes-the-malignant-of-human-non-hodgkin-lymphoma-by-activating-the-ribonucleotide-reductase-%C3%A2-small-subunit-m2
#17
Dayong Yan, Wei Wang
To explore the role of the special AT rich sequence binding protein-1 (SATB1) and ribonucleotide reductase M2 (RRM2) in enhancing malignant progression of non-Hodgkin lymphoma (NHL). 
 Methods: A total of 42 NHL and 42 chronic lymphadenitis patients were recruited. The protein expressions of SATB1 and RRM2 in cervical lymph nodes were determined by Western blot. After overexpression of SATB1, siSATB1 or siRRM2, the mRNA levels of SATB1 and RRM2 in cells were analyzed via RT-PCR, the cell proliferation was evaluated via MTT and EdU assays, while the migration and invasion of cells were assessed by transwell assays...
November 28, 2016: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/27932423/integrated-genomic-analysis-of-survival-outliers-in-glioblastoma
#18
Sen Peng, Harshil Dhurv, Brock Armstrong, Bodour Salhia, Christophe Legendre, Jeffrey Kiefer, Julianna Parks, Selene Virk, Andrew E Sloan, Quinn T Ostrom, Jill S Barnholtz-Sloan, Nhan L Tran, Michael E Berens
BACKGROUND: To elucidate molecular features associated with disproportionate survival of glioblastoma (GB) patients, we conducted deep genomic comparative analysis of a cohort of patients receiving standard therapy (surgery plus concurrent radiation and temozolomide); "GB outliers" were identified: long-term survivor of 33 months (LTS; n = 8) versus short-term survivor of 7 months (STS; n = 10). METHODS: We implemented exome, RNA, whole genome sequencing, and DNA methylation for collection of deep genomic data from STS and LTS GB patients...
December 8, 2016: Neuro-oncology
https://www.readbyqxmd.com/read/27932222/using-a-contextualized-sensemaking-model-for-interaction-design-a-case-study-of-tumor-contouring
#19
Anet Aselmaa, Marcel van Herk, Anne Laprie, Ursula Nestle, Irina Götz, Nicole Wiedenmann, Tanja Schimek-Jasch, Francois Picaud, Charlotte Syrykh, Leonel V Cagetti, Maria Jolnerovski, Yu Song, Richard H M Goossens
Sensemaking theories help designers understand the cognitive processes of a user when he/she performs a complicated task. This paper introduces a two-step approach of incorporating sensemaking support within the design of health information systems by: 1) modeling the sensemaking process of physicians while performing a task, and 2) identifying software interaction design requirements that support sensemaking based on this model. The two-step approach is presented based on a case study of the tumor contouring clinical task for radiotherapy planning...
December 5, 2016: Journal of Biomedical Informatics
https://www.readbyqxmd.com/read/27931838/routine-use-of-gene-panel-testing-in-hereditary-breast-cancer-should-be-performed-with-caution
#20
REVIEW
Cedric van Marcke, Anne De Leener, Martine Berlière, Miikka Vikkula, Francois P Duhoux
Breast cancer is the most frequent cancer occurring in women. Ten percent of these cancers are considered hereditary. Among them, 30% are attributed to germline mutations in the tumor suppressor genes BRCA1 and BRCA2. Other genes of lower penetrance are also known, explaining together up to 40% of the hereditary risk of breast cancer. New techniques, such as next-generation sequencing, allow the simultaneous analysis of multiple genes in a cost-effective way. As a logical consequence, gene panel testing is entering clinical practice with the promise of personalized care...
December 2016: Critical Reviews in Oncology/hematology
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