Witzmann F A, Monteiro-Riviere N A, Inman A O, Kimpel M A, Pedrick N M, Ringham H N, Riviere J E
Department of Cellular and Integrative Physiology, Biotechnology Research and Training Center, Indiana University School of Medicine, 1345 W 16th Street, Rm 308, Indianapolis, IN 46202-2111, USA.
Toxicol Lett. 2005 Dec 30;160(1):8-21. doi: 10.1016/j.toxlet.2005.06.001. Epub 2005 Jul 12.
Dermal exposure to jet fuel is a significant occupational hazard. Previous studies have investigated its absorption and disposition in skin, and the systemic biochemical and immunotoxicological sequelae to exposure. Despite studies of JP-8 jet fuel components in murine, porcine or human keratinocyte cell cultures, proteomic analysis of JP-8 exposure has not been investigated. This study was conducted to examine the effect of JP-8 administration on the human epidermal keratinocyte (HEK) proteome. Using a two-dimensional electrophoretic approach combined with mass spectrometric-based protein identification, we analyzed protein expression in HEK exposed to 0.1% JP-8 in culture medium for 24 h. JP-8 exposure resulted in significant expression differences (p<0.02) in 35 of the 929 proteins matched and analyzed. Approximately, a third of these alterations were increased in protein expression, two-thirds declined with JP-8 exposure. Peptide mass fingerprint identification of effected proteins revealed a variety of functional implications. In general, altered proteins involved endocytotic/exocytotic mechanisms and their cytoskeletal components, cell stress, and those involved in vesicular function.
