Trends Biomedical In silico. “Omics” a variety of new technologies help explain both normal and...
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Trends Biomedical
In silico
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“Omics” • a variety of new technologies • help explain both normal and abnormal cell pathways, networks, and processes • simultaneous monitoring of thousands of molecular components. • genomics (the quantitative study of protein-coding genes, regulatory elements and
noncoding sequences), • transcriptomics (the quantitative study of RNA and gene expression) • proteomics (the quantitative study of protein abundance and protein modifications) • metabolomics (the quantitative study of metabolites and metabolic networks) • pharmacogenomics (the quantitative study of how genetics affects a host’s response
to drugs) • physiomics (the quantitative study of physiological dynamics and the functions of
whole organisms), • nutrigenomics (a rapidly growing discipline that focuses on identifying the genetic
factors that influence the body’s response to diet and how the bioactive constituents of food affect gene expression)
• phylogenomics (the analysis of genome data and evolutionary reconstructions, especially phylogenetics)
• interactomics (the study of molecular interaction networks).
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Chem Biol. 2013 May 23;20(5):660-6. iPOP goes the world: integrated personalized Omics profiling and the road toward improved health care. Li-Pook-Than, Snyder M. Free access at http://www.ncbi.nlm.nih.gov/pubmed/23706632
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Integrated personalized Omics profiling
(A) Participant tissue sample (e.g. blood cell) is collected, while environment (incl. diet, exercise, etc.), medical history and clinical data are recorded. T1 is the first time point.(B) Selected omic analysis involved in a sample iPOP study.(C) Sample Circos plot of DNA (outer ring), RNA (middle ring) and protein (inner ring) data matching to chromosomes.(D) iPOP performed and integrated at multiple time points: T2, T3, T4 (viral-infected), T5 up to Tn states, including disease-state(s). Grey and green forms represent relative-healthy individual and a disease-state, respectively.(E) Report data back to genetic counsellor and medical practitioner with better informed choices for prevention and/or treatment (matched with pharmacogenetic data), if needed.
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Structure-guided drug development
Copyright © Molecular Profiling Research Center for Drug Discovery, AIST, 2013 All Rights Reserved.http://www.molprof.jp/english/research/iddt2.html
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Biological networks represent various types of molecular interactions(1) enzyme catalysis, (2) the post-transcriptional control of gene expression by proteins, (3) the effect of metabolites on gene transcription mediated by a
protein, (4) protein interactions, (5) the effect of a downstream metabolite on transcription, (6) feedback inhibition/activation of an enzyme by a downstream
metabolite, and (7) the exchange of a metabolite outside of the system. The solid lines represent direct interactions, and the discontinuous lines represent possible interactions in tumor cells.Int. J. Mol. Sci. 2012, 13(6), 6561-6581; doi:10.3390/ijms13066561State of the Art in Silico Tools for the Study of Signaling Pathways in CancerVanessa Medina Villaamil, Guadalupe Aparicio Gallego, Isabel Santamarina Cainzos, Manuel Valladares-Ayerbes and Luis M. Antón Aparicio
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Drug Discovery Today Volume 19, Issue 2, February 2014, Pages 171–182Metabolomics and systems pharmacology: why and how to model the human metabolic network for drug discoveryDouglas B. Kell , Royston Goodacre
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Gene-expression-based drug repositioningSignature reversion (a) the aim is to identify a drug
where the effect on transcription is opposite to a disease signature.
Association (b) drugs giving similar gene expression signatures are found and thought to share a common mode of action.
Many public databases can be queried to generate drug and disease signatures that can be compared to each other and integrated with newly generated experimental data (c).
Drug Discovery Today Volume 18, Issues 7–8, April 2013, Pages 350–357 Transcriptional data: a new gateway to drug repositioning? Francesco Iorio, Timothy Rittman, Hong Ge, Michael Menden, Julio Saez-Rodriguez
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-ome Level Description Selected resources
Genome DNA Complete/whole DNA sequence,chromosomes
http://www.personalgenomes.org/http://www.1000genomes.org/dbSNP:http://www.ncbi.nlm.nih.gov/snp
Exome DNA DNA sequence associated to coding regions
http://www.nhlbi.nih.gov/resources/exome.htm
http://www.nhlbi.nih.gov/resources/geneticsgenomics/programs/mendelian.htmEpigenome DNA/RNA DNA methylation
and histone modification,can affect chromatin and gene expression
NIH Roadmap Epigenomics Mapping Consortiumhttp://www.roadmapepigenomics.org/
Methylome DNA DNA methylation -
The -omics which might be included
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-ome Level Description Selected resources
Regulome DNAbindingregions
Regulation factors that affect gene expression
ENCODE: ENCyclopedia Of DNA Elementshttp://www.genome.gov/ENCODE/
Transcriptome RNA Gene expression, isoforms, miRNA, allelic specificexpression
http://www.h-invitational.jp/http://www.ncbi.nlm.nih.gov/refseq/
Splice-ome RNA Alternative splicing(not the spliceosome complex)
http://jbirc.jbic.or.jp/h-dbas/
Editome RNA RNA edits, variants not present in DNA
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miRNome RNA miRNAs http://genetrail.bioinf.uni-sb.de/wholemirnomeproject/
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-ome Level Description Selected resources
Proteome protein Protein expression, isoforms
http://www.humanproteinpedia.org/http://www.hprd.org/
Autoantibodyome protein Antibody targeted against one’s own protein(s)
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Metabolome metabolites Small molecules of metabolism (eg. nucleotides, amino acids, vitamins)
Human Metabolome Database:http://www.hmdb.ca/
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-ome Level Description Selected resources
Metagenome DNA Genomes of multipleorganisms
https://www.ebi.ac.uk/metagenomics/
Microbiome DNA/RNA/protein
Microbial characterization atmultiple human body sites
http://www.human-microbiome.org/NIH: http://www.hmpdacc.org/
Interactome All Networks of all –omicinteractions
http://interactome.dfci.harvard.edu/
Pharmacogenome DNA/RNA/protein
-omic variants reflecting anindividual’s response to drugs
http://hapmap.ncbi.nlm.nih.gov/http://www.pharmgkb.org/