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PMID: 21749716 Published · epublish English Journal Article Research Support, N.I.H., Extramural

iAB-RBC-283: A proteomically derived knowledge-base of erythrocyte metabolism that can be used to simulate its physiological and patho-physiological states.

BMC systems biology ·Vol. 5 ·2011-07-12 ·Pages 110

Bordbar A, Jamshidi N, Palsson BO

Abstract

The development of high-throughput technologies capable of whole cell measurements of genes, proteins, and metabolites has led to the emergence of systems biology. Integrated analysis of the resulting omic data sets has proved to be hard to achieve. Metabolic network reconstructions enable complex relationships amongst molecular components to be represented formally in a biologically relevant manner while respecting physical constraints. In silico models derived from such reconstructions can then be queried or interrogated through mathematical simulations. Proteomic profiling studies of the mature human erythrocyte have shown more proteins present related to metabolic function than previously thought; however the significance and the causal consequences of these findings have not been explored. Erythrocyte proteomic data was used to reconstruct the most expansive description of erythrocyte metabolism to date, following extensive manual curation, assessment of the literature, and functional testing. The reconstruction contains 281 enzymes representing functions from glycolysis to cofactor and amino acid metabolism. Such a comprehensive view of erythrocyte metabolism implicates the erythrocyte as a potential biomarker for different diseases as well as a 'cell-based' drug-screening tool. The analysis shows that 94 erythrocyte enzymes are implicated in morbid single nucleotide polymorphisms, representing 142 pathologies. In addition, over 230 FDA-approved and experimental pharmaceuticals have enzymatic targets in the erythrocyte. The advancement of proteomic technologies and increased generation of high-throughput proteomic data have created the need for a means to analyze these data in a coherent manner. Network reconstructions provide a systematic means to integrate and analyze proteomic data in a biologically meaning manner. Analysis of the red cell proteome has revealed an unexpected level of complexity in the functional capabilities of human erythrocyte metabolism.

MeSH Terms
Biomarkers/metabolism Erythrocytes/enzymology,metabolism,pathology,physiology Humans Knowledge Bases Metabolic Networks and Pathways Models, Biological Proteomics Systems Biology/methods
Chemicals
Biomarkers
Authors & Affiliations
3 authors, click to expand affiliations / ORCID
Bordbar Aarash
Department of Bioengineering, University of California San Diego, La Jolla, 92093-0412, USA.
Jamshidi Neema
Palsson Bernhard O
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Article Info
Journal
BMC systems biology
Abbr.
BMC Syst Biol
ISSN
1752-0509
Published
2011-07-12
Epub
2011-00-12
Pages
110
Language
English
Region
England
NLM ID
101301827
PMCID
PMC3158119
Subset
IM
Grants
NIGMS NIH HHS · GM068837 · United States
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