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KMID : 1101420160480030188
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Korean Journal of Clinical Laboratory Science
2016 Volume.48 No. 3 p.188 ~ p.195
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House Dust Mite Allergen Inhibits Constitutive Neutrophil Apoptosis by Cytokine Secretion via PAR2/PKCδ/p38 MAPK Pathway in Allergic Lymphocytes
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Lee Na-Rae
Lee Ji-Sook
Kim In-Sik
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Abstract
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Neutrophils and lymphocytes are essential inflammatory cells in the pathogenesis of allergy. In this study, we evaluated the role of house dust mite (HDM) in the interaction between allergic lymphocytes and neutrophils. The extract of Dermatophagoides pteronissinus (DP) showed a stronger anti-apoptotic impact on neutrophil apoptosis in the coculture of allergic neutrophils with allergic lymphocytes when compared with that in allergic neutrophils alone. DP increased IL-6,
IL-8, MCP-1, and GM-CSF in allergic lymphocytes, and the increased cytokines were inhibited by rottlerin?an inhibitor of the protein kinase C (PKC) ?, as well as by SB202190?a p38 MAPK inhibitor. DP activated p38 MAPK in a time-dependent manner. The activation of p38 MAPK was suppressed by PAR2i, which is a protease-activated receptor (PAR) 2 inhibitor, and rottlerin. Both aprotinin?a serine protease inhibitor?and E64?a cysteine protease inhibitor?were not effective on cytokine secretion of lymphocytes. These results, despite increased cytokines in allergic lymphocytes via DP, did not show any differences between asthma and allergic rhinitis. Molecules, including cytokines, released by DP in lymphocytes inhibited the migration of neutrophils. This finding may further elucidate the pathogenic mechanism of allergic diseases due to HDM.
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KEYWORD
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House dust mite, Cytokine, Neutrophils apoptosis, Allergy
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