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Comparative proteomics of human monkeypox and vaccinia intracellular mature and extracellular enveloped virions.

ABSTRACT: Orthopoxviruses are among the largest and most complex of the animal viruses. In response to the recent emergence of monkeypox in Africa and the threat of smallpox bioterrorism, two orthopoxviruses with different pathogenic potentials, human monkeypox virus and vaccinia virus, were proteomically compared with the goal of identifying proteins required for pathogenesis. Orthopoxviruses were grown in HeLa cells to two different viral forms (intracellular mature virus and extracellular enveloped virus), purified by sucrose gradient ultracentrifugation, denatured using RapiGest surfactant, and digested with trypsin. Unfractionated samples and strong cation exchange HPLC fractions were analyzed by high-resolution reversed-phase nano-LC-MS/MS, and analyses of the MS/MS spectra using SEQUEST and X! Tandem resulted in the confident identification of hundreds of monkeypox, vaccinia, and copurified host-cell proteins. The unfractionated samples were additionally analyzed by LC-MS using an LTQ-Orbitrap, and the accurate mass and elution time tag approach was used to perform quantitative comparisons. Possible pathophysiological roles of differentially abundant Orthopoxvirus proteins are discussed. Data, processed results, and protocols are available at http://www.proteomicsresource.org/.

SUBMITTER: Manes NP

PROVIDER: S-EPMC2517256 | biostudies-literature | 2008 Mar

REPOSITORIES: biostudies-literature

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Comparative proteomics of human monkeypox and vaccinia intracellular mature and extracellular enveloped virions.

Manes Nathan P NP Estep Ryan D RD Mottaz Heather M HM Moore Ronald J RJ Clauss Therese R W TR Monroe Matthew E ME Du Xiuxia X Adkins Joshua N JN Wong Scott W SW Smith Richard D RD

Journal of proteome research 20080119 3

Orthopoxviruses are among the largest and most complex of the animal viruses. In response to the recent emergence of monkeypox in Africa and the threat of smallpox bioterrorism, two orthopoxviruses with different pathogenic potentials, human monkeypox virus and vaccinia virus, were proteomically compared with the goal of identifying proteins required for pathogenesis. Orthopoxviruses were grown in HeLa cells to two different viral forms (intracellular mature virus and extracellular enveloped vir ...[more]

PMID: 18205298

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Project description:We analyzed effects of monkeypox (MPX) and vaccinia (VAC) infection on cultured human cells. Our custom-designed arrays contain >18,000 human genes as well as genes for each open reading frame of MPX and VAC. A reference experiement design type is where all samples are compared to a common reference. Compound Based Treatment: Chemical used for treating infected cells Infection: Virus used for infection Cell Line: Cell line used for infection Time: Time cells were harvested after infection Keywords: reference_design Experiments used primary human monocytes with mock infection, VAC-Western Reserve, VAC-NYBOH, MPX-Zaire, gamma irradiated (killed) MPX-Zaire, and Ebola-Zaire (EBOV) (deposited March 2004). The next set of experiments used primary human monocytes (Mf7.29) and primary human fibroblasts (S100) with mock infection, VAC-Western Reserve, MPX-Zaire, and gamma irradiated MPX-Zaire (g-MPX) (deposited August 2004). The final set used primary human monocytes (Mph), primary human fibroblasts (NHDF), and HeLa cells with mock infection, VAC-Western Reserve, MPX-Zaire, and gamma irradiated MPX-Zaire (g-MPX). Some cells were treated with ionomycin + PMA (I+P), cycloheximide (CHX) or hydroxyurea (HU). (deposited November 2005). Total RNA from cells was harvested at each timepoint, preserved in Trizol, Trizol-extracted total RNA, 1 round amplified (Ambion MessageAmp I), directly labeled by Cy5 incorporation during reverse transcription of amplified RNA. Each sample was hybridized versus a common reference (Stratagene Universal Human Reference RNA plus a mix of poxvirus transcripts from all timepoints). The reference was1 round of amplification (Ambion MessageAmp I), directly labeled by Cy3 incorporation during reverse transcription of amplified reference RNA. Cy3 and Cy5 samples were hybridized to a custom human-poxvirus array. Fluorescent images of hybridized microarrays were acquired using the GenePix 4000B and GenePix 4200AL microarray scanners.

Dataset Information

Comparative proteomics of human monkeypox and vaccinia intracellular mature and extracellular enveloped virions.

Publications

Comparative proteomics of human monkeypox and vaccinia intracellular mature and extracellular enveloped virions.

Similar Datasets

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