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https://www.readbyqxmd.com/read/28817151/comprehensive-analysis-of-long-noncoding-rna-mrna-co-expression-patterns-in-thyroid-cancer
#1
Yaying Du, Wenfei Xia, Jinjun Zhang, Dongyi Wan, Zhifang Yang, Xingrui Li
Novel molecular-targeted treatments show great prospects for radioiodine-refractory and surgically inoperable thyroid carcinomas. While aberrations in protein-coding genes are a focus in molecular thyroid cancer medicine, the impact of oncogenes on the expression of long noncoding RNAs (lncRNAs) has been largely uncharacterized. We aimed to identify the expression patterns of lncRNAs and mRNAs in high-throughput molecular profiles of 18 papillary thyroid cancer (PTC) patients. We identified 452 mRNAs and 240 unannotated lncRNAs that were differentially expressed in PTC...
August 17, 2017: Molecular BioSystems
https://www.readbyqxmd.com/read/28815134/interrogating-patient-level-genomics-and-mouse-phenomics-towards-understanding-cytokines-in-colorectal-cancer-metastasis
#2
Xiaoshu Cai, Yang Chen, Chunlei Zheng, Rong Xu
Background: Colorectal cancer is the second leading cancer-related death worldwide and a majority of patients die from metastasis. Chronic intestinal inflammation plays an important role in tumor progression of colorectal cancer. However, few study works on systematically predicting colorectal cancer metastasis using inflammatory cytokine genes. Results: We developed a supervised machine learning approach to predict colorectal cancer tumor progression using patient level genomic features. To better understand the role of cytokines, we integrated the metastatic-related genes from mouse phenotypic data...
2017: AMIA Summits on Translational Science Proceedings
https://www.readbyqxmd.com/read/28813674/an-integrated-systems-biology-approach-identifies-trim25-as-a-key-determinant-of-breast-cancer-metastasis
#3
Logan A Walsh, Mariano J Alvarez, Erich Y Sabio, Marsha Reyngold, Vladimir Makarov, Suranjit Mukherjee, Ken-Wing Lee, Alexis Desrichard, Şevin Turcan, Martin G Dalin, Vinagolu K Rajasekhar, Shuibing Chen, Linda T Vahdat, Andrea Califano, Timothy A Chan
At the root of most fatal malignancies are aberrantly activated transcriptional networks that drive metastatic dissemination. Although individual metastasis-associated genes have been described, the complex regulatory networks presiding over the initiation and maintenance of metastatic tumors are still poorly understood. There is untapped value in identifying therapeutic targets that broadly govern coordinated transcriptional modules dictating metastatic progression. Here, we reverse engineered and interrogated a breast cancer-specific transcriptional interaction network (interactome) to define transcriptional control structures causally responsible for regulating genetic programs underlying breast cancer metastasis in individual patients...
August 15, 2017: Cell Reports
https://www.readbyqxmd.com/read/28810144/integrated-genomic-characterization-of-pancreatic-ductal-adenocarcinoma
#4
(no author information available yet)
We performed integrated genomic, transcriptomic, and proteomic profiling of 150 pancreatic ductal adenocarcinoma (PDAC) specimens, including samples with characteristic low neoplastic cellularity. Deep whole-exome sequencing revealed recurrent somatic mutations in KRAS, TP53, CDKN2A, SMAD4, RNF43, ARID1A, TGFβR2, GNAS, RREB1, and PBRM1. KRAS wild-type tumors harbored alterations in other oncogenic drivers, including GNAS, BRAF, CTNNB1, and additional RAS pathway genes. A subset of tumors harbored multiple KRAS mutations, with some showing evidence of biallelic mutations...
August 14, 2017: Cancer Cell
https://www.readbyqxmd.com/read/28807238/unravelling-the-complexity-of-signalling-networks-in-cancer-a-review-of-the-increasing-role-for-computational-modelling
#5
REVIEW
John Garland
Cancer induction is a highly complex process involving hundreds of different inducers but whose eventual outcome is the same. Clearly, it is essential to understand how signalling pathways and networks generated by these inducers interact to regulate cell behaviour and create the cancer phenotype. While enormous strides have been made in identifying key networking profiles, the amount of data generated far exceeds our ability to understand how it all "fits together". The number of potential interactions is astronomically large and requires novel approaches and extreme computation methods to dissect them out...
September 2017: Critical Reviews in Oncology/hematology
https://www.readbyqxmd.com/read/28806730/a-systems-approach-reveals-distinct-metabolic-strategies-among-the-nci-60-cancer-cell-lines
#6
Maike K Aurich, Ronan M T Fleming, Ines Thiele
The metabolic phenotype of cancer cells is reflected by the metabolites they consume and by the byproducts they release. Here, we use quantitative, extracellular metabolomic data of the NCI-60 panel and a novel computational method to generate 120 condition-specific cancer cell line metabolic models. These condition-specific cancer models used distinct metabolic strategies to generate energy and cofactors. The analysis of the models' capability to deal with environmental perturbations revealed three oxotypes, differing in the range of allowable oxygen uptake rates...
August 14, 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28806053/de-blurring-signal-network-dynamics
#7
Dominic Kamps, Leif Dehmelt
To orchestrate the function and development of multicellular organisms, cells integrate intra- and extracellular information. This information is processed via signal networks in space and time, steering dynamic changes in cellular structure and function. Defects in those signal networks can lead to developmental disorders or cancer. However, experimental analysis of signal networks is challenging as their state changes dynamically and differs between individual cells. Thus, causal relationships between network components are blurred if lysates from large cell populations are analyzed...
August 14, 2017: ACS Chemical Biology
https://www.readbyqxmd.com/read/28804242/immuno-oncology-integrative-networks-elucidating-the-influences-of-osteosarcoma-phenotypes
#8
REVIEW
Ankush Sharma, Enrico Capobianco
In vivo and in vitro functional phenotyping characterization was recently obtained with reference to an experimental pan-cancer study of 22 osteosarcoma (OS) cell lines. Here, differentially expressed gene (DEG) profiles were recomputed from the publicly available data to conduct network inference on the immune system regulatory activity across the characterized OS phenotypes. Based on such DEG profiles, and for each phenotype that was analyzed, we obtained coexpression networks and bio-annotations for them...
2017: Cancer Informatics
https://www.readbyqxmd.com/read/28802167/induction-of-senescence-in-cancer-cells-by-5-aza-2-deoxycytidine-bioinformatics-and-experimental-insights-to-its-targets
#9
Jayarani F Putri, Nashi Widodo, Kazuichi Sakamoto, Sunil C Kaul, Renu Wadhwa
5'-Aza-2'-deoxycytidine (5-Aza-dC) is a demethylating drug that causes genome-wide hypomethylation resulting in the expression of several tumor suppressor genes causing growth arrest of cancer cells. Cancer is well established as a multifactorial disease and requires multi-module therapeutics. Search for new drugs and their approval by FDA takes a long time. Keeping this in view, research on new functions of FDA-approved anticancer drugs is desired to expand the list of multi-module functioning drugs for cancer therapy...
August 2, 2017: Computational Biology and Chemistry
https://www.readbyqxmd.com/read/28798701/a-qualitative-investigation-on-patient-empowerment-in-prostate-cancer
#10
Chiara Renzi, Chiara Fioretti, Serena Oliveri, Ketti Mazzocco, Dario Zerini, Ombretta Alessandro, Damaris P Rojas, Barbara A Jereczek-Fossa, Gabriella Pravettoni
Purpose: Men with prostate cancer often describe low levels of empowerment. eHealth interventions may represent useful tools to deliver care and education and to meet patients' needs within an empowerment framework. In order to design a platform for cancer patients' empowerment within the H2020 iManageCancer project, the perspective of the target population for the platform was assessed. The present study aims to assess the qualitative experience of prostate cancer patients during treatment in order to provide insights for clinical practice with a particular focus on the design of a web platform to promote cancer patients' empowerment...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28798410/a-novel-signature-for-stratifying-the-molecular-heterogeneity-of-the-tissue-infiltrating-t-cell-receptor-repertoire-reflects-gastric-cancer-prognosis
#11
Manchao Kuang, Jieyao Cheng, Chengli Zhang, Lin Feng, Xue Xu, Yajing Zhang, Ming Zu, Jianfang Cui, Hang Yu, Kaitai Zhang, Aiming Yang, Shujun Cheng
Many basic properties of the T-cell receptor (TCR) repertoire require clarification, and the changes occurring in the TCR repertoire during carcinogenesis, especially during precancerous stages, remain unclear. This study used deep sequencing analyses to examine 41 gastric tissue samples at different pathological stages, including low-grade intraepithelial neoplasia, high-grade intraepithelial neoplasia, early gastric cancer and matched adjacent tissues, to define the characteristics of the infiltrating TCRβ repertoire during gastric carcinogenesis...
August 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28794999/modulation-of-the-p53-family-network-by-rna-binding-proteins
#12
Chris Lucchesi, Jin Zhang, Xinbin Chen
Since its discovery more than three decades ago, tumor suppressor p53 has been shown to play pivotal roles in both maintaining genomic integrity and tumor suppression. p53 functions as a transcription factor responding to a multitude of cellular stressors, regulating the transcription of many genes involved in cell-cycle arrest, senescence, autophagy, and apoptosis. Extensive work has revealed that p53 is one of the most commonly mutated tumor suppressor genes. The last three decades have demonstrated that p53 activity is controlled through transcriptional regulation and posttranslational modifications...
December 2016: Translational Cancer Research
https://www.readbyqxmd.com/read/28793794/excitable-signal-transduction-networks-in-directed-cell-migration
#13
Peter N Devreotes, Sayak Bhattacharya, Marc Edwards, Pablo A Iglesias, Thomas Lampert, Yuchuan Miao
Although directed migration of eukaryotic cells may have evolved to escape nutrient depletion, it has been adopted for an extensive range of physiological events during development and in the adult organism. The subversion of these movements results in disease, such as cancer. Mechanisms of propulsion and sensing are extremely diverse, but most eukaryotic cells move by extending actin-filled protrusions termed macropinosomes, pseudopodia, or lamellipodia or by extension of blebs. In addition to motility, directed migration involves polarity and directional sensing...
August 9, 2017: Annual Review of Cell and Developmental Biology
https://www.readbyqxmd.com/read/28793339/modeling-mirna-mrna-interactions-that-cause-phenotypic-abnormality-in-breast-cancer-patients
#14
Sanghoon Lee, Xia Jiang
BACKGROUND: The dysregulation of microRNAs (miRNAs) alters expression level of pro-oncogenic or tumor suppressive mRNAs in breast cancer, and in the long run, causes multiple biological abnormalities. Identification of such interactions of miRNA-mRNA requires integrative analysis of miRNA-mRNA expression profile data. However, current approaches have limitations to consider the regulatory relationship between miRNAs and mRNAs and to implicate the relationship with phenotypic abnormality and cancer pathogenesis...
2017: PloS One
https://www.readbyqxmd.com/read/28793269/cell-type-specific-gene-programs-of-the-normal-human-nephron-define-kidney-cancer-subtypes
#15
David Lindgren, Pontus Eriksson, Krzysztof Krawczyk, Helén Nilsson, Jennifer Hansson, Srinivas Veerla, Jonas Sjölund, Mattias Höglund, Martin E Johansson, Håkan Axelson
Comprehensive transcriptome studies of cancers often rely on corresponding normal tissue samples to serve as a transcriptional reference. In this study, we performed in-depth analyses of normal kidney tissue transcriptomes from the TCGA and demonstrate that the histological variability in cellularity, inherent in the kidney architecture, lead to considerable transcriptional differences between samples. This should be considered when comparing expression profiles of normal and cancerous kidney tissues. We exploited these differences to define renal-cell-specific gene signatures and used these as a framework to analyze renal cell carcinoma (RCC) ontogeny...
August 8, 2017: Cell Reports
https://www.readbyqxmd.com/read/28790851/identification-of-the-anticancer-effects-of-a-novel-proteasome-inhibitor-ixazomib-on-colorectal-cancer-using-a-combined-method-of-microarray-and-bioinformatics-analysis
#16
Qiaowei Fan, Bingrong Liu
PURPOSE: The study aimed to explore the anticancer effects of a novel proteasome inhibitor, ixazomib, on colorectal cancer (CRC) using a combined method of microarray and bioinformatics analysis. MATERIALS AND METHODS: Cell proliferation was tested by Cell Counting Kit-8 (CCK-8) assay for SW620 cells treated with different concentrations of ixazomib and different treatment times. The microarray analysis was conducted for six samples, including three samples of SW620 cells untreated with ixazomib and three samples of SW620 cells treated with ixazomib...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28790501/conquering-the-challenges-of-genotypic-and-phenotypic-tumor-heterogeneity-to-realize-the-promise-of-personalized-cancer-therapy-the-role-of-academia
#17
Sofia Merajver, Sameer Phadke, Matthew Soellner
The advent of rapid and progressively more affordable sequencing and gene expression studies have spurred research on therapies for cancer targeted to specific gene alterations. With few exceptions, such as those cancers with either a paucity of mutations or major chromosomal rearrangements driving the neoplastic transformation, the approaches based on one mutational target-one drug have achieved only modest outcomes in cancer. Using the paradigm of aggressive breast cancers, we will show the mathematical explanation that predicts our failures and indicates a plausible way forward...
2017: Transactions of the American Clinical and Climatological Association
https://www.readbyqxmd.com/read/28781952/network-analyses-elucidate-the-role-of-smyd3-in-esophageal-squamous-cell-carcinoma
#18
Xinning Liu, Zhoude Zheng, Chuhong Chen, Simin Guo, Zhennan Liao, Yue Li, Ying Zhu, Haiying Zou, Jianyi Wu, Wenming Xie, Pixian Zhang, Liyan Xu, Bingli Wu, Enmin Li
SMYD3 is a member of the SET and myeloid-Nervy-DEAF-1 (MYND) domain-containing protein family of methyltransferases, which are known to play critical roles in carcinogenesis. Expression of SMYD3 is elevated in various cancers, including esophageal squamous cell carcinoma (ESCC), and is correlated with the survival time of patients with ESCC. Here, we dissect gene expression data, from a previously described KYSE150 ESCC cell line in which SMYD3 had been knocked down, by integration with the protein-protein interaction (PPI) network, to find the new potential biological roles of SMYD3 and subsequent target genes...
August 2017: FEBS Open Bio
https://www.readbyqxmd.com/read/28779875/paths-from-dna-damage-and-signaling-to-genome-rearrangements-via-homologous-recombination
#19
REVIEW
Jac A Nickoloff
DNA damage is a constant threat to genome integrity. DNA repair and damage signaling networks play a central role maintaining genome stability, suppressing tumorigenesis, and determining tumor response to common cancer chemotherapeutic agents and radiotherapy. DNA double-strand breaks (DSBs) are critical lesions induced by ionizing radiation and when replication forks encounter damage. DSBs can result in mutations and large-scale genome rearrangements reflecting mis-repair by non-homologous end joining or homologous recombination...
July 24, 2017: Mutation Research
https://www.readbyqxmd.com/read/28776612/overcoming-t-gondii-infection-and-intracellular-protein-nanocapsules-as-biomaterials-for-ultrasonically-controlled-drug-release
#20
REVIEW
M S Aw, L Paniwnyk
One of the pivotal matters of concern in intracellular drug delivery is the preparation of biomaterials containing drugs that are compatible with the host target. Nanocapsules for oral delivery are found to be suitable candidates for targeting Toxoplasma gondii (T. gondii), a maneuvering and smart protozoic parasite found across Europe and America that causes a subtle but deadly infection. To overcome this disease, there is much potential of integrating protein-based cells into bioinspired nanocompartments such as via biodegradable cross-linked disulfide polyelectrolyte nanoparticles...
August 4, 2017: Biomaterials Science
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