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Integrative genomics

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https://www.readbyqxmd.com/read/28646744/systematic-biobanking-novel-imaging-techniques-and-advanced-molecular-analysis-for-precise-tumor-diagnosis-and-therapy-the-polish-mobit-project
#1
Jacek Niklinski, Adam Kretowski, Marcin Moniuszko, Joanna Reszec, Anna Michalska-Falkowska, Magdalena Niemira, Michal Ciborowski, Radoslaw Charkiewicz, Dorota Jurgilewicz, Miroslaw Kozlowski, Rodryg Ramlau, Cezary Piwkowski, Miroslaw Kwasniewski, Monika Kaczmarek, Andrzej Ciereszko, Tomasz Wasniewski, Robert Mroz, Wojciech Naumnik, Ewa Sierko, Magdalena Paczkowska, Joanna Kisluk, Anetta Sulewska, Adam Cybulski, Zenon Mariak, Boguslaw Kedra, Jacek Szamatowicz, Paweł Kurzawa, Lukasz Minarowski, Angelika Edyta Charkiewicz, Barbara Mroczko, Jolanta Malyszko, Christian Manegold, Lothar Pilz, Heike Allgayer, Mohammed L Abba, Hartmut Juhl, Frauke Koch
Personalized and precision medicine is gaining recognition due to the limitations by standard diagnosis and treatment; many areas of medicine, from cancer to psychiatry, are moving towards tailored and individualized treatment for patients based on their clinical characteristics and genetic signatures as well as novel imaging techniques. Advances in whole genome sequencing have led to identification of genes involved in a variety of diseases. Moreover, biomarkers indicating severity of disease or susceptibility to treatment are increasingly being characterized...
June 21, 2017: Advances in Medical Sciences
https://www.readbyqxmd.com/read/28646502/the-liver-gut-microbiota-axis-modulates-hepatotoxicity-of-tacrine-in-the-rat
#2
Lian Yee Yip, Chiu Cheong Aw, Sze Han Lee, Yi Shuen Hong, Han Chen Ku, Winston Hecheng Xu, Jessalyn Mei Xuan Chan, Eleanor Jing Yi Cheong, Kern Rei Chng, Amanda Hui Qi Ng, Niranjan Nagarajan, Ratha Mahendran, Yuan Kun Lee, Edward R Browne, Eric Chun Yong Chan
The gut microbiota possesses diverse metabolic activities but its contribution towards heterogeneous toxicological responses is poorly understood. Here, we elucidate the role of the liver-gut microbiota axis in underpinning the hepatotoxicity of tacrine. We employed an integrated strategy combining pharmacokinetics, toxicology, metabonomics, genomics and metagenomics to elucidate and validate the mechanism of tacrine-induced hepatotoxicity in Lister hooded rats. Pharmacokinetic studies in rats demonstrated 3...
June 23, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28645536/imaging-genetics-of-schizophrenia-in-the-post-gwas-era
#3
REVIEW
Ayla Arslan
Imaging genetics is a research methodology studying the effect of genetic variation on brain structure, function, behavior, and risk for psychopathology. Since the early 2000s, imaging genetics has been increasingly used in the research of schizophrenia (SZ). SZ is a severe mental disorder with no precise knowledge of its underlying neurobiology, however, new genetic and neurobiological data generate a climate for new avenues. The accumulating data of genome wide association studies (GWAS) continuously decode SZ risk genes...
June 20, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28645380/comet-fish-for-ultrasensitive-strand-specific-detection-of-dna-damage-in-single-cells
#4
Manas Mondal, Jia Guo
The genome integrity of living organisms is constantly threatened by endogenous cellular metabolic processes and environmental agents. To quantify these low, physiologically relevant levels of DNA damage, a single-cell gel electrophoresis (comet) combined with strand-specific fluorescence in situ hybridization (FISH)-based approach has been developed. This approach enables the quantification of low levels of specific DNA lesions in each strand of the selected sequence at the single-molecule sensitivity, as well as in the genome overall in single cells...
2017: Methods in Enzymology
https://www.readbyqxmd.com/read/28645376/proteomic-analyses-of-the-eukaryotic-replication-machinery
#5
David Cortez
DNA replication in a human cell involves hundreds of proteins that copy the DNA accurately and completely each cell division cycle. In addition to the core DNA copying machine (the replisome), accessory proteins work to respond to replication stress, correct errors, and repackage the DNA into appropriate chromatin structures. New proteomic tools have been invented in the past few years to facilitate the purification, identification, and quantification of the replication, chromatin maturation, and replication stress response machineries...
2017: Methods in Enzymology
https://www.readbyqxmd.com/read/28645373/strategies-and-methods-of-transcription-coupled-repair-studies-in-vitro-and-in-vivo
#6
Vitaly Epshtein, Venu Kamarthapu, Evgeny Nudler
Transcription-coupled repair (TCR) serves an important role in preserving genome integrity and maintaining fidelity of replication. Coupling transcription to DNA repair requires a coordinated action of several factors, including transcribing RNA polymerase and various transcription modulators and repair proteins. To study TCR in molecular detail, it is important to employ defined protein complexes in vitro and defined genetic backgrounds in vivo. In this chapter, we present methods to interrogate various aspects of TCR at different stages of repair...
2017: Methods in Enzymology
https://www.readbyqxmd.com/read/28645248/characterizing-the-reproductive-transcriptomic-correlates-of-acute-dehydration-in-males-in-the-desert-adapted-rodent-peromyscus-eremicus
#7
Lauren Kordonowy, Matthew MacManes
BACKGROUND: The understanding of genomic and physiological mechanisms related to how organisms living in extreme environments survive and reproduce is an outstanding question facing evolutionary and organismal biologists. One interesting example of adaptation is related to the survival of mammals in deserts, where extreme water limitation is common. Research on desert rodent adaptations has focused predominantly on adaptations related to surviving dehydration, while potential reproductive physiology adaptations for acute and chronic dehydration have been relatively neglected...
June 23, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28645177/mobile-genetic-elements-in-neisseria-gonorrhoeae-movement-for-change
#8
Ana Cehovin, Steven B Lewis
Neisseria gonorrhoeae, the causative agent of the sexually transmitted disease gonorrhoeae, possesses several mobile genetic elements (MGEs). The MGEs such as transposable elements mediate intra-chromosomal rearrangements, while plasmids and the gonococcal genetic island are involved in inter-chromosomal gene transfer. Additionally, gonococcal MGEs serve as hotspots for recombination and integration of other genetic elements such as bacteriophages, contribute to gene regulation or spread genes through gonococcal populations by horizontal gene transfer...
June 22, 2017: Pathogens and Disease
https://www.readbyqxmd.com/read/28645169/heterodimerization-of-arabidopsis-calcium-proton-exchangers-contributes-to-regulation-of-guard-cell-dynamics-and-plant-defense-responses
#9
Bradleigh Hocking, Simon J Conn, Murli Manohar, Bo Xu, Asmini Athman, Matthew A Stancombe, Alex R Webb, Kendal D Hirschi, Matthew Gilliham
Arabidopsis thaliana cation exchangers (CAX1 and CAX3) are closely related tonoplast-localized calcium/proton (Ca2+/H+) antiporters that contribute to cellular Ca2+ homeostasis. CAX1 and CAX3 were previously shown to interact in yeast; however, the function of this complex in plants has remained elusive. Here, we demonstrate that expression of CAX1 and CAX3 occurs in guard cells. Additionally, CAX1 and CAX3 are co-expressed in mesophyll tissue in response to wounding or flg22 treatment, due to the induction of CAX3 expression...
June 22, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28644436/the-lats1-and-lats2-tumor-suppressors-beyond-the-hippo-pathway
#10
REVIEW
Noa Furth, Yael Aylon
Proper cellular functionality and homeostasis are maintained by the convergent integration of various signaling cascades, which enable cells to respond to internal and external changes. The Dbf2-related kinases LATS1 and LATS2 (LATS) have emerged as central regulators of cell fate, by modulating the functions of numerous oncogenic or tumor suppressive effectors, including the canonical Hippo effectors YAP/TAZ, the Aurora mitotic kinase family, estrogen signaling and the tumor suppressive transcription factor p53...
June 23, 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28644387/rna-binding-proteins-and-genome-integrity
#11
REVIEW
Kensei Nishida, Yuki Kuwano, Tatsuya Nishikawa, Kiyoshi Masuda, Kazuhito Rokutan
Genome integrity can be threatened by various endogenous or exogenous events. To counteract these stressors, the DNA damage response network contributes to the prevention and/or repair of genomic DNA damage and serves an essential function in cellular survival. DNA binding proteins are involved in this network. Recently, several RNA-binding proteins (RBPs) that are recruited to DNA damage sites have been shown to be direct players in the prevention or repair of DNA damage. In addition, non-coding RNAs, themselves, are involved in the RNA-mediated DNA repair system...
June 23, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28643930/moving-towards-precision-orthodontics-an-evolving-paradigm-shift-in-the-planning-and-delivery-of-customized-orthodontic-therapy
#12
REVIEW
A H Jheon, S Oberoi, R C Solem, S Kapila
Advances in precision medicine portend similar progress in orthodontics and will be increasingly harnessed to achieve customized treatment approaches and enhance treatment efficiencies. Our goal is to provide a background on emerging advances in computer technologies and biomedicine and highlight their current and likely future applications to precision orthodontics. A review of orthodontically relevant technologies and advances in pertinent biological research was undertaken. Innovations in computer hardware and software, and 3D imaging technologies offer the ability for customized treatment and biomechanical planning that will be more fully realized within the next few decades...
June 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28643332/integrative-eqtl-analysis-of-tumor-and-host-omics-data-in-individuals-with-bladder-cancer
#13
Silvia Pineda, Kristel Van Steen, Núria Malats
Integrative analyses of several omics data are emerging. The data are usually generated from the same source material (i.e., tumor sample) representing one level of regulation. However, integrating different regulatory levels (i.e., blood) with those from tumor may also reveal important knowledge about the human genetic architecture. To model this multilevel structure, an integrative-expression quantitative trait loci (eQTL) analysis applying two-stage regression (2SR) was proposed. This approach first regressed tumor gene expression levels with tumor markers and the adjusted residuals from the previous model were then regressed with the germline genotypes measured in blood...
June 23, 2017: Genetic Epidemiology
https://www.readbyqxmd.com/read/28643261/genome-editing-of-silkworms
#14
Takuya Tsubota, Hideki Sezutsu
Silkworm is a lepidopteran insect that has been used as a model for a wide variety of biological studies. The microinjection technique is available and it is possible to cause transgenesis as well as target gene disruption via the genome editing technique. TALEN-mediated knock-out is especially effective in this species. We also succeeded in the precise and efficient integration of a donor vector using the Precise Integration into Target Chromosome (PITCh) method. Here, we describe protocols for ZFN, TALEN, and CRISPR/Cas9-mediated genome editing as well as the PITCh technique in the silkworm...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28643258/crispr-cas9-mediated-targeted-knockin-of-exogenous-reporter-genes-in-zebrafish
#15
Atsuo Kawahara
Genome editing technologies such as ZFN, TALEN, and CRISPR/Cas9 efficiently induce DNA double-stranded breaks (DSBs) at a targeted genomic locus, often resulting in a frameshift-mediated target gene disruption. It remains difficult to perform targeted integration of exogenous genes by genome editing technologies. DSBs can be restored through DNA repair mechanisms, such as non-homologous end joining (NHEJ), microhomology-mediated end joining (MMEJ), and homologous recombination (HR). It is well known that HR facilitates homology-dependent integration of donor DNA template into a targeted locus...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28642843/the-impact-of-genome-region-of-difference-4-rd4-on-mycobacterial-virulence-and-bcg-efficacy
#16
Huanwei Ru, Xiaojia Liu, Chen Lin, Jingyan Yang, Fuzeng Chen, Ruifeng Sun, Lu Zhang, Jun Liu
Comparative genome analyses have revealed a number of regions of difference (RD) among mycobacterial species. The functional consequences of most of these genome variations have not been studied. RD4, which encompasses Rv1506c-Rv1516c of Mycobacterium tuberculosis (M. tb) H37Rv, is absent in the closely related Mycobacterium bovis and M. bovis Bacille Calmette-Guérin (BCG). On the other hand, we previously found that Mycobacterium marinum has an extended RD4 which includes a number of genes involved in the biosynthesis of lipooligosaccharides (LOSs)...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28642609/microbial-signatures-associated-with-oropharyngeal-and-oral-squamous-cell-carcinomas
#17
Sagarika Banerjee, Tian Tian, Zhi Wei, Kristen N Peck, Natalie Shih, Ara A Chalian, Bert W O'Malley, Gregory S Weinstein, Michael D Feldman, James Alwine, Erle S Robertson
The microbiome is fundamentally one of the most unique organs in the human body. Dysbiosis can result in critical inflammatory responses and result in pathogenesis contributing to neoplastic events. We used a pan-pathogen array technology (PathoChip) coupled with next-generation sequencing to establish microbial signatures unique to human oral and oropharyngeal squamous cell carcinomas (OCSCC/OPSCC). Signatures for DNA and RNA viruses including oncogenic viruses, gram positive and negative bacteria, fungi and parasites were detected...
June 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28642592/integrative-network-analysis-identifies-novel-drivers-of-pathogenesis-and-progression-in-newly-diagnosed-multiple-myeloma
#18
A Laganà, D Perumal, D Melnekoff, B Readhead, B A Kidd, V Leshchenko, P-Y Kuo, J Keats, M DeRome, J Yesil, D Auclair, S Lonial, A Chari, H J Cho, B Barlogie, S Jagannath, J T Dudley, S Parekh
Multiple Myeloma (MM) is an incurable malignancy of bone marrow plasma cells characterized by wide clinical and molecular heterogeneity. In this study we applied an integrative network biology approach to molecular and clinical data measured from 450 patients with newly diagnosed MM from the MMRF CoMMpass study. A novel network model of myeloma (MMNet) was constructed, revealing complex molecular disease patterns and novel associations between clinical traits and genomic markers. Genomic alterations and groups of co-expressed genes correlate with disease stage, tumor clonality, and early progression...
June 23, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28642369/replisome-mediated-translesion-synthesis-by-a-cellular-replicase
#19
Philip Nevin, Carolina C Gabbai, Kenneth J Marians
Genome integrity relies on the ability of the replisome to navigate ubiquitous DNA damage during DNA replication. The Escherichia coli replisome transiently stalls at leading-strand template lesions and can either reinitiate replication downstream of the lesion or recruit specialized DNA polymerases that can bypass the lesion via translesion synthesis. Previous results had suggested that the E. coli replicase might play a role in lesion bypass, but this possibility has not been tested in reconstituted DNA replication systems...
June 22, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28642157/genome-comparisons-of-two-taiwanese-community-associated-methicillin-resistant-staphylococcus-aureus-st59-clones-support-the-multi-origin-theory-of-ca-mrsa
#20
Ye Feng, Hsiu-Ling Chen, Chih-Jung Chen, Chyi-Liang Chen, Cheng-Hsun Chiu
Sequence type (ST) 59 is an epidemic lineage of community-associated methicillin-resistant Staphylococcus aureus (CA-MRSA) in Asia. Two ST59 clones are prevalent in Taiwan: the Taiwan clone (TW) causes severe infections, whereas the Asian-Pacific clone (AP) is usually commensal. In this study, we sequenced the genome and transcriptome of the representative strains of these two clones and found their differences to focus on three mobile genetic elements: TW carries SCCmec Type VT, Panton-Valentine leucocidin (PVL)-encoding prophage ΦSa2, whereas AP carries SCCmec Type IV and staphylokinase (SAK)-encoding prophage ΦSa3...
June 19, 2017: Infection, Genetics and Evolution
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