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Differential gene expression profiling of mouse skin after sulfur mustard exposure: Extended time response and inhibitor effect

Environmental and Occupational Health Sciences Institute (EOHSI), a Joint Institute of UMDNJ-RW Johnson Medical School and Rutgers University, 170 Frelinghuysen Road, Piscataway, NJ 08854, USA.
Toxicology and Applied Pharmacology (Impact Factor: 3.63). 11/2008; 234(2):156-65. DOI: 10.1016/j.taap.2008.09.020
Source: PubMed

ABSTRACT Sulfur mustard (HD, SM), is a chemical warfare agent that within hours causes extensive blistering at the dermal-epidermal junction of skin. To better understand the progression of SM-induced blistering, gene expression profiling for mouse skin was performed after a single high dose of SM exposure. Punch biopsies of mouse ears were collected at both early and late time periods following SM exposure (previous studies only considered early time periods). The biopsies were examined for pathological disturbances and the samples further assayed for gene expression profiling using the Affymetrix microarray analysis system. Principal component analysis and hierarchical cluster analysis of the differently expressed genes, performed with ArrayTrack showed clear separation of the various groups. Pathway analysis employing the KEGG library and Ingenuity Pathway Analysis (IPA) indicated that cytokine-cytokine receptor interaction, cell adhesion molecules (CAMs), and hematopoietic cell lineage are common pathways affected at different time points. Gene ontology analysis identified the most significantly altered biological processes as the immune response, inflammatory response, and chemotaxis; these findings are consistent with other reported results for shorter time periods. Selected genes were chosen for RT-PCR verification and showed correlations in the general trends for the microarrays. Interleukin 1 beta was checked for biological analysis to confirm the presence of protein correlated to the corresponding microarray data. The impact of a matrix metalloproteinase inhibitor, MMP-2/MMP-9 inhibitor I, against SM exposure was assessed. These results can help in understanding the molecular mechanism of SM-induced blistering, as well as to test the efficacy of different inhibitors.

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    • "P.A. Everley, J.F. Dillman, 3rd / Toxicology Letters 198 (2010) 297–303 Table 1 List of systems biology-related genomics and proteomics studies used in CWA research. CWA Genomics/proteomics Study GB Genomics Pachiappan et al. (2009) Damodaran et al. (2006a) Damodaran et al. (2006b) GD Genomics Dillman et al. (2009) VX Genomics Blanton et al. (2004) HD Genomics Price et al. (2009) Gerecke et al. (2009) Rogers et al. (2008) Yu et al. (2006) Dillman et al. (2006) Dillman et al. (2005) Rogers et al. (2004) Shahin et al. (2001) Lakshmana Rao et al. (1999) Meier and Millard (1998) Proteomics Everley and Dillman (2010) Mehrani et al. (2009) Mol et al. (2008) An et al. (2006) Dillman et al. (2003) Dillman and Schlager (2003) Phosgene Genomics Sciuto et al. (2005) MEDLINE, ToxFile, Biosis Previews, EMBASE and CA SEARCH databases were searched for articles containing " genomic " or " proteomic " terms using the following keywords: sarin (GB), soman (GD), VX, VR, sulfur mustard (HD), chlorine, cyanide, cyclosarin (GF), and phosgene. Articles returned from the database search were filtered for CWA relevance. "
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    ABSTRACT: Medical research on the effects of chemical warfare agents (CWAs) has been ongoing for nearly 100 years, yet these agents continue to pose a serious threat to deployed military forces and civilian populations. CWAs are extremely toxic, relatively inexpensive, and easy to produce, making them a legitimate weapon of choice for terrorist organizations. While the mechanisms of action for many CWAs have been known for years, questions about their molecular effects following acute and chronic exposure remain largely unanswered. Global approaches that can pinpoint which cellular pathways are altered in response to CWAs and characterize long-term toxicity have not been widely used. Fortunately, innovations in genomics and proteomics technologies now allow for thousands of genes and proteins to be identified and subsequently quantified in a single experiment. Advanced bioinformatics software can also help decipher large-scale changes observed, leading to mapping of signaling pathways, functional characterization, and identification of potential therapeutic targets. Here we present an overview of how genomics and proteomics technologies have been applied to CWA research and also provide a series of questions focused on how these techniques could further our understanding of CWA toxicity.
    Toxicology Letters 10/2010; 198(3):297-303. DOI:10.1016/j.toxlet.2010.08.003 · 3.36 Impact Factor
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    • "A correlation has been reported between the changes in several of these genes and the ability of antivesicants to reduce SMinduced ear edema. Significant changes in gene expression have also been reported up to 7 days following exposure of mice to SM (Gerecke et al., 2009). Gene ontology analysis suggests that the most significantly altered biological processes are immune and inflammatory responses and that the specific genes expressed differ as a function of time after exposure. "
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