International conference on bioinformatics of genome regulation
Download 3.91 Kb. Pdf ko'rish
|
Key words: proteomics, health, mass-spectrometry Blood serum has been extensively explored as a source of markers, as it may contain not only blood proteins per se, but also proteins originating from all tissues of the body. It is estimated that up to 10,000 different proteins (and/or its fragments) may be present in the blood serum, and most of them are in very low concentrations. Selection of a protein preparation, and especially enrichment procedures, may aid in successful search for markers. For concentration of minor protein for MALDI TOF/TOF analysis, and de- pletion of abundant proteins a 2,2,2-trichloroacetic acid (TCA) precipitation of proteins is frequently applied. However, a significant amount of proteins and peptides may be present in the TCA extracts, and these proteins and peptides are often left non-studied. Recently, we used two-stops TCA-extraction/acetone precipitation methods in combina- tion with HPLC and MALDI TOF/TOF mass-spectrometry to identify earlier unknown 48 kDa form of human unconventional myosin IC isoform b (48/myo1c) and Ser-Pro- Cys – containing peptides (prosercyne) in blood serum of multiple sclerosis patients (Myronovsky et al,.). Elevating level of 48/myo1c we also detected in blood serum of patients with rheumatoid arthritis, Alzheimer disease, and some hematooncological dis- ease (multiple myeloma, non-Hodgkin’s lymphoma, et cetera). Low level of this protein was detected in blood serum of healthy humans but it not detected in blood serum of patients with diabetes 1, cirrhosis, thyroiditis, and recurrent miscarriage. The level of 48/myo1c in blood serum correlates with certain type of human diseases that may have diagnostic value. Cytotoxic effect of 48/myo1c and prosercyne toward some malignant cells and normal lymphocytes in vitro was detected. Conclusion: The elevating level of 48/myo1c in blood serum correlates with certain type of human diseases that may have diagnostic value. Cytotoxic effect of 48/myo1c and prosercyne toward malignant and normal blood cells in vitro suggests their possible anticancer and potential immunosuppressive activity. 1. S. Myronovskij et al. Isolation and characterization of peptides from blood serum of patients with mul- tiple sclerosis // Studia Biologica. 2015, 9 (2), 5–12. 2. S. Myronovkij et al. Identification of a 48kDa form of unconventional myosin 1c in blood serum of patients with autoimmune diseases // Biochem. Biophys. Reports. 2016, 5. 175-179. 3. S. Myronovskij et al. Identification of Ser-Pro-Cys-Peptide in Blood Serum of Multiple Sclerosis Patients // Protein Pept Lett. 2016 Jun 22. PMID: 27338077 199 THE TENTH INTERNATIONAL CONFERENCE ON BIOINFORMATICS OF GENOME REGULATION AND STRUCTURE\SYSTEMS BIOLOGY COMPUTER AIDED DRUG DESIGN: DEVELOPMENT MODELS FOR SPECIFICITY, POLYPHARMOCOLOGY AND MEMBRANE PERMEABILITY G.N. Sastry 1 *, S. Janardhan 1 , A.S. Gaur 1 , V. Poroikov 2 1 Centre for Molecular Modeling, CSIR-Indian Institute of Chemical Technology, Hyderabad, India 2 Institute of Biomedical Chemistry, Moscow, Russia * Corresponding author: gnsastry@gmail.com Key words: Polypharmacology, specificity, membrane permeability, structure based and ligand based ap- proaches, and chemoinformatics Motivation and Aim: Developing computational approaches, which provide a direction to the lead identification and optimization is an indispensable area which is of high sig- nificance in industry and academia. In addition to QSAR and docking approaches which represent the traditional analog and structure based approaches respectively, optimizing other important factors at times appear to be a major bottleneck. Here, we identify and explore how to effectively and reliable model specificity, membrane permeability and polypharmocology. Methods and Algorithms: Developed structure and ligand based virtual screening fil- ters. We also describe our drug design platforms being developed in the group. Some of the results are also obtained by employing a range of molecular dynamics (AMBER, CHARMM and DESMOND), quantum chemistry (Gaussian), and other bioinformatics and Chemoinformatics tools. Results: The talk present how one can effectively use the computational platform Mo- lecular Property Diagnostic Suite (MPDS) that is being developed in the group. The fin- gerprint, chemotype selectivity and polypharmocology approaches being implemented on selected inhibitors of Mycobacterium tuberculosis and a couple of kianse targets will be discussed. Conclusion: The talk presents a series of computationally designed lead inhibitors against selected kinase and Mtb targets. It also highlight the ongoing work of developing computational platforms against identified targets. Availability: Most of the information is available from authors and the software tools are underdevelopment. Acknowledgements: This work is supported by CSIR and triggered to initiate a collab- orative Indo-Russian (DST-RSF) project. References: 1. P. Badrinarayan and G. N. Sastry, (2013) Curr. Pharm. Design, 19: 4714-4738; ibid (2014) PLoS One, 9: e113773.; ibid (2011) J. Chem. Inf. Model., 34: 89-100. 2. C. Chinmayee, U. Deva Priyakumar and G. N. Sastry, (2015) J. Chem. Inf. Model. 55: 848-860. (2016), (2014) J. Struct. Biol. 187: 38-48. (2016),Mol. Inform., 35: 145-157. 3. S. Janardhan and G. N. Sastry, (2014) Curr. Drug Targets, 15: 600-62. 200 THE TENTH INTERNATIONAL CONFERENCE ON BIOINFORMATICS OF GENOME REGULATION AND STRUCTURE\SYSTEMS BIOLOGY STUDY ON THE REGULATION OF CELL DIVISION DURING EARLY FRUIT DEVELOPMENT IN TOMATO H. Nariyama, T. Shibuya, Y. Kanayama* School of Agricultural Science, Tohoku University, Sendai, Japan *Corresponding author: yoshinori.kanayama.a7@tohoku.ac.jp Key words: anti-auxin, cell division, 1-naphthylacetic acid, SlHPY2 Motivation and Aim: Fruit crops exhibit genetic diversity in fruit size, which is one of factors useful for breeding. Generally, fruit size depends on cell division and cell expan- sion, and fruit development consists of a cell division period and a cell expansion period. Here, we focused on the regulation mechanism of cell division as one of the determin- ing factors for fruit size in tomato as a model plant of fruit crops. In Arabidopsis roots, HIGH PLOIDY 2 (HPY2) induced by auxin reportedly regulates cell division. In this study, auxin and anti-auxin treatments and the expression analysis of SlHPY2, a tomato homolog gene of HPY2, were performed to reveal the effect of auxin on cell division in tomato fruit. Materials and Methods: For auxin and anti-auxin treatment, tomato ‘Ailsa Craig’ fruit was dipped into 1-naphthylacetic acid (NAA) every day from 4 days post anthesis, or into anti-auxin every day from anthesis. Fruit diameter was measured at 8 and 15 days post anthesis. Paraffin sections prepared from their pericarp were dyed, and the number of cells per unit length in the mesocarp was measured. Total RNA was extracted from the fruit and SlHPY2 gene expression was measured through quantitative real-time PCR. Results and Conclusion: The number and size of cells did not differ between NAA- treated fruit and the control at 8 days post anthesis, whereas the number of cells was larger and the cell size was smaller in the treated fruit than in the control at 15 days post anthesis. In the expression analysis, SlHPY2 mRNA levels did not differ between NAA- treated fruit and the control at 8 days post anthesis, whereas the levels rose with NAA concentration at 15 days post anthesis. In the anti-auxin treatment, the number of cells was smaller and the cell size was larger in the treated fruit than in the control at both 8 and 15 days post anthesis; however, SlHPY2 mRNA levels did not differ between the anti-auxin treated fruit and the control. These results suggest that auxin promotes cell division, and that further study is necessary to elucidate the role of SlHPY2. Besides, metabolome and transcriptome analysis was performed throughout fruit development. Metabolites and transcripts specific for early fruit development will be shown and dis- cussed. 201 THE TENTH INTERNATIONAL CONFERENCE ON BIOINFORMATICS OF GENOME REGULATION AND STRUCTURE\SYSTEMS BIOLOGY WHOLE GENOME OF THE WOOLY MAMMOTH: EVOLUTION THROUGH MILLENIA A.V. Nedoluzhko 1 *, A.S. Sokolov 2 , F.S. Sharko 2 , E.S. Boulygina 1 , S.V. Tsygankova 1 , A.N. Tikhonov 3 , K.G. Skryabin 1, 2, 4 , E.B. Prokhortchouk 2, 4* 1 National Research Center “Kurchatov Institute”, Moscow, Russia 2 Institute of Bioengineering, Research Center of Biotechnology of the Russian Academy of Sciences, Moscow, Russia 3 Zoological Institute, Russian Academy of Sciences, Saint Petersburg, Russia 4 Lomonosov Moscow State University, Faculty of Biology, Moscow, Russia * Corresponding author: nedoluzhko@gmail.com, prokhortchouk@gmail.com Key words: genome, woolly mammoth, Mammuthus primigenius, ancient DNA, next-generation sequencing Motivation and Aim: Woolly mammoth (Mammuthus primigenius Blum.) was an evo- lutionary dead end of genus Mammuthus which ancestors arose in Africa and migrated to Eurasia almost three million years ago. Paleozoologists described several species in these genera – M. meridionalis (Early Pleistocene), M. trogontherii (Middle Pleisto- cene), M. primigenius (Late Pleistocene) and other. Woolly mammoth had appeared 300 – 200 thousands years ago in Siberia and colonized Europe and North America. Methods and Algorithms: In our study we sequenced DNA from different tissues of woolly mammoth calf known as Khroma (AMS age was at background levels, that is >50,000 years). Ancient DNA has been successfully extracted from a skeletal muscle, a piece of skin, a piece of skin covered with hair, and two different bone samples. Results: Here we report whole genome sequence of the woolly mammoth genome using Illumina GAIIx and HiSeq 1500 platforms we got 16x coverage of the woolly mammoth genome. We used VarScan.v2.3.7 with parameter – p-value < 0.05 for snp-calling. After that we got 17,732,776 SNPs with p-value less than 0.05. Of these SNPs only 4,011,148 lie inside gene part. For subsequent analysis we used only SNPs with p-value less than 0.001 and with at least 20x coverage. After that procedure only 1,550,394 SNPs (inside gene part) has been retained. Conclusion: To conduct Gene Ontology analysis we converted particular genes of inter- est into human orthologues. First we considered genes with missense variants. Next we considered genes with stop gained variants. We founded a lot of stop gains in rapidly evolving olfactory and MHC genes. Using Khroma genome we supposed several SNPs and also founded several interesting non-synonymous substitutions in globin and dynein genes. Acknowledgements: We would like to thank Dr Ludovic Orlando for allowing the use of the laboratory infrastructure for ancient DNA manipulations and also for his careful reading of the manuscript and his valuable suggestion. 202 THE TENTH INTERNATIONAL CONFERENCE ON BIOINFORMATICS OF GENOME REGULATION AND STRUCTURE\SYSTEMS BIOLOGY REGULATION OF THIOREDOXIN GENES EXPRESSION IN DESICCATION-TOLERANT INSECT POLYPEDILUM VANDERPLANKI A.A. Nesmelov 1 *, E.I. Shagimardanova 1 , M.D. Logacheva 2 , R. Cornette 3 , T. Kikawada 3 , O.A. Gusev 1, 3, 4, 5 1 Institute of Fundamental Biology and Medicine, Kazan Federal University, Kazan, Russia 2 Department of Bioengineering and Bioinformatics, Lomonosov Moscow State University, Moscow, Russia 3 National Institute of Agrobiological Sciences (NIAS), Tsukuba, Japan 4 PMI Riken, Yokohama Campus, Yokohama 230-0045, Japan * Corresponding author: nesmelov@gmail.com Key words: P. vanderplanki, thioredoxin, DNA motif discovery Motivation and Aim: Polypedilum vanderplanki is the most complex organism able to survive desiccation. P. vanderplanki genome contains both common insect thioredoxin (TRX) genes and TRX genes specific for this insect [1]. We test our hypothesis that P. vanderplanki-specific TRX genes and common insect TRX genes differ in their regu- lation. The aim: to compare DNA motifs in regulatory sequences of TRX genes in P. vanderplanki genome. Methods and Algorithms: Isolation of DNA sequences from P. vanderplanki genome us- ing bedtools [1]. Analysis of isolated DNA sequences using MEME tool [2]. Results: TRX genes specific for P. vanderplanki share similar DNA motifs in their regu- latory sequences. These DNA motifs are not associated with common insect TRX genes in P. vanderplanki genome. Conclusion: Revealed difference of regulatory sequences between TRX genes specific for P. vanderplanki and common insect TRX genes reflects the difference in their regu- lation. Specific DNA motifs associated with P. vanderplanki–specific TRX genes are responsible for an upregulation of these genes in desiccation. Acknowledgements: The work was supported by Ministry of Education and Science of the Russian Federation (Research identifier RFMEFI58414X0002). References: 1. O. Gusev et al., (2014) Comparative genome sequencing reveals genomic signature of extreme desic- cation tolerance in the anhydrobiotic midge, Nature communications, 5: 4784. 2. A.R. Quinlan, I.M.Hall. (2010) BEDTools: a flexible suite of utilities for comparing genomic features, Bioinformatics, 26: 841–842. 3. T.L.Bailey et al., (2009) MEME SUITE: tools for motif discovery and searching, Nucleic Acids Re- search, Jul;37(Web Server issue):W202-8. 203 THE TENTH INTERNATIONAL CONFERENCE ON BIOINFORMATICS OF GENOME REGULATION AND STRUCTURE\SYSTEMS BIOLOGY DEVELOPMENT OF MICROSATELLITE MARKERS ACCORDING TO BAC SEQUENCING DATA AND THEIR PHYSICAL MAPPING TO THE BREAD WHEAT 5B CHROMOSOME M.A. Nesterov 1 *, D.A. Afonnikov 1 , E.M. Sergeeva 1 , L.A. Miroshnichenko 2 , M.K. Bragina 1 , A.O. Bragin 1 , G.V. Vasiliev 1 , E.A. Salina 1 1 Institute of Cytology and Genetics SB RAS, Novosibirsk, Russia 2 Sobolev Institute of Mathematics SB RAS, Novosibirsk, Russia * Corresponding author: mikkanestor@bionet.nsc.ru Key words: bread wheat, Triticum aestivum, BAC clones, Ion Torrent, MIRA, microsatellites, chromosome 5B, SSR markers, (AAG) n The shortage of polymorphic markers for the regions of wheat chromosomes that encode commercially valuable traits determined the need for studying wheat microsatellite loci. In this work, SSR markers for individual regions in the short arm of bread wheat chro- mosome 5B (5BS) were designed based on sequencing data for BAC clones, and the re- gions of the corresponding chromosome were saturated with these markers. Totally, 130 randomly selected BAC clones from the 5BS library were sequenced on the Ion Torrent platform and assembled in contigs using MIRA software. The assembly characteristics (N50 = 4136 bp) are comparable to the recently obtained data for wheat and relative species and acceptable for identification of microsatellite loci. An algorithm utilizing the properties of complexity decompositions in the sliding-window mode was used to detect DNA sequences with a repeat unit of 2–4 bp. Analysis of 17770 contigs with the total length of 25879921 bp allowed for designing 113, 79, and 67 microsatellite (SSR) loci with a repeat unit of 2, 3, and 4 bp, respectively. The SSR markers with a motif of 3 bp were tested using nullitetrasomic lines of Chinese Spring wheat homoeologous group 5. Thus, 21 markers specific for chromosome 5B were detected. Seven of these markers were mapped to the distal region of this chromosome (bin 5BS6) using a set of Chinese Spring deletion lines for 5BS. Eight and four markers were mapped to the interstitial region (bins 5BS5 and 5BS4, respectively). Two markers were mapped to a pericentro- meric bin. A comparative analysis of the distribution of trinucleotide microsatellites over wheat chromosome 5B and in different cereal species suggests that the (AAG)n repeat has proliferated and has been maintained during the evolution of cereals. 204 THE TENTH INTERNATIONAL CONFERENCE ON BIOINFORMATICS OF GENOME REGULATION AND STRUCTURE\SYSTEMS BIOLOGY CMSEARCH: TOOL FOR SEARCHING TFBS COMPOSITE MODULES IN DNA SEQUENCES S.I. Nikitin*, E.S. Cheryomushkin A.P. Ershov Institute of Informatics Systems SB RAS, Novosibirsk, Russia Novel Computing Systems in Biology LLC, Novosibirsk, Russia * Corresponding author: sergey_post@inbox.ru Key words: algorithm, binding sites, transcription factors, composite motif, position weight matrices, sen- sitivity, positive predictive value, transcription factor binding site, DNA Motivation and Aim: The DNA sequences consist of coding areas and regulatory regions, which control gene synthesis. On the start of gene production, transcription factors bind to short sequences called binding sites. As known the transcription factors are often be- ing combined in groups and bind to the respective binding sites coordinately [1]. To pre- dict these transcription complexes binding areas is a scientific challenge nowadays. All existing algorithms show low prediction accuracy and often have specific limitations. Methods and Algorithms: We introduce new prediction algorithm called CMSearch. It uses position weight matrices (PWM) as transcription factors description and Match al- gorithm as the accessory instrument for binding sites prediction [2]. Composite module can be defined by setting the weight matrices it contains and rules each PWM interacts with other. We predict single motifs for PWMs contained in selected composite module, and then find all binding sites groups corresponding to the composite module template. Results: We use the framework developed by the Klepper et al. [3] to compare out algo- rithm with other developed tools. We consider the sensitivity, positive predictive value and performance coefficient to estimate efficiency of the algorithms. CMSearch showed results comparable with well-known efficient tools like Stubb and CMA [4]. Conclusion: We introduced CMSearch – the novel tool to finding transcription factor binding sites groups defined by setting the position weight matrices and the rules each matrix interacts with other in module. This algorithm showed good results among the other well-known tools. Availability: The algorithm is distributed as part of the Proteome commercial system, Biobase/Qiagen. Acknowledgements: This research was supported by Biobase GmbH (now the part of the Qiagen corporation) and made by using Transfac database. References: 1. Spitz F, Furlong EE. (2012) Transcription factors: from enhancer binding to developmental control. Nature Reviews Genetics, 13: 613-626. 2. Kel,A.E. et al. (2003) MATCH: A tool for searching transcription factor binding sites in DNA sequenc- es. Nucleic Acids Research, 31: 3576-3579. 3. Klepper, K., Sandve, G., Abul, O., Johansen, J., Drablos, F. (2008) Assessment of composite motif discovery methods. BMC Bioinformatics, 9: 123. 4. Kel A.E. et al. (2006) Composite Module Analyst: a fitness-based tool for identification of transcription factor binding site combinations. Bioinformatics, 22(10): 1190-1197. 205 THE TENTH INTERNATIONAL CONFERENCE ON BIOINFORMATICS OF GENOME REGULATION AND STRUCTURE\SYSTEMS BIOLOGY A CONGESTION GAME MODEL FOR VIRTUAL DRUG SCREENING IN A DESKTOP GRID N.N. Nikitina*, E.E. Ivashko Institute of Applied Mathematical Research, Karelian Research Center RAS, Petrozavodsk, Russia * Corresponding author: nikitina@krc.karelia.ru Key words: virtual drug screening, protein-ligand docking, desktop grid, BOINC, congestion game Motivation and Aim: Virtual drug screening is a significant part of drug development process as it allows reducing the chemical space of the order of 10 60 potentially synthe- sizable compounds down to a manageable set for laboratory testing. However, pre- and post-filtering of the chemical space consume a lot of effort and time which makes struc- ture-based virtual drug screening over very large databases unfeasible. Small focused libraries are not always readily available for new drug targets. In this work we address a game-theoretic model for filtering the explored compounds space on the fly when per- forming structure-based virtual drug screening over very large databases. Methods and Algorithms: Being a computational technique to process many independent fine-grained tasks, virtual drug screening essentially involves a set of computational nodes that may be seen as independent agents, each of them willing to perform as much useful work as possible. We model virtual drug screening process as a congestion game between computational nodes who compete for a shared pool of resources, namely sub- sets of computational tasks. The utility of each player depends not only on the value of the chosen resource, but also on the number of other players choosing it (the “congestion level”). According to drug development principles, two primary characteristics of the resulting set of compounds to be laboratory tested are their estimated efficiency of inter- action with the disease-relevant target and their structural diversity. Ranking compounds by the former characteristic is performed by molecular docking software. We propose to attain the structural diversity of the results by employing the competition between computational nodes that tend to select the computational task subsets that are in less demand by other nodes. Results: We propose a congestion game model for virtual drug screening. The game has at least one Nash equilibrium in pure strategies; best- and better-response dynamics are guaranteed to converge to equilibrium in polynomial time. The social utility function ex- presses efficiency and diversity of the resulting set of compounds. The developed algo- rithms for taskflow management are being implemented and tested within the BOINC- based Enterprise Desktop Grid for virtual drug screening [1]. Acknowledgements: This work is supported by the Russian Fund for Basic Research (projects 16-07-00622 A and 15-29-07974 ofi_m). References: 1. N. Nikitina, E. Ivashko, S. Möller (2014) BOINC-based Desktop Grid Infrastructure for Virtual Drug Screening, Abstracts of the International Conference on Mathematical Modeling and High Perfor- mance Computing in Bioinformatics, Biomedicine and Biotechnology, MM-HPC-BBB-2014: 62. 206 THE TENTH INTERNATIONAL CONFERENCE ON BIOINFORMATICS OF GENOME REGULATION AND STRUCTURE\SYSTEMS BIOLOGY MECHANICS OF PLANT CELL UNIDIRECTIONAL GROWTH S.V. Nikolaev 1, 2 *, S.K. Golushko 2 , U.S. Zubairova 1 , D.A. Afonnikov 1 1 Institute of Cytology and Genetics SB RAS, Novosibirsk, Russia 2 Design and Technology Institute of Digital Techniques SB RAS, Novosibirsk, Russia * Corresponding author: nikolaev@bionet.nsc.ru Download 3.91 Kb. Do'stlaringiz bilan baham: |
Ma'lumotlar bazasi mualliflik huquqi bilan himoyalangan ©fayllar.org 2024
ma'muriyatiga murojaat qiling
ma'muriyatiga murojaat qiling