Gene expression profiling and network analysis of peripheral blood monocytes in a chronic model of allergic asthma.
The Aspergillus fumigatus mouse model of asthma mimics the characteristics of human fungal asthma, including local and systemic inflammation. Monocyte/macrophage lineage cells direct innate immune responses and guide adaptive responses. To identify gene expression changes in peripheral blood monocytes in the context of fungal allergy, mice were exposed to systemic and intranasal inoculations of fungal antigen (sensitized), and naïve and sensitized animals were challenged intratracheally with live A. fumigatus conidia. Microarray analysis of blood monocytes from allergic versus non-allergic mice showed ≥ twofold modulation of 45 genes. Ingenuity pathway analysis revealed a network of these genes involved in antigen presentation, inflammation, and immune cell trafficking. These data show that allergen sensitization and challenge affects gene expression in peripheral monocytes.
Dorsam
Glenn P
GP
Department of Chemistry and Molecular Biology, North Dakota State University, Dept. 2710, PO Box 6050, Fargo, ND 58108-6050, USA.
Hoselton
Scott A
SA
Sandy
Ashley R
AR
Samarasinghe
Amali E
AE
Vomhof-Dekrey
Emilie E
EE
Dorsam
Sheri T
ST
Schuh
Jane M
JM
D000818:Animals; D001232:Aspergillus fumigatus / Q000276:immunology*; D001249:Asthma / Q000235:genetics*; D002908:Chronic Disease; D004195:Disease Models, Animal; D020869:Gene Expression Profiling; D053263:Gene Regulatory Networks; D006967:Hypersensitivity / Q000235:genetics; D051379:Mice; D008807:Mice, Inbred BALB C; D009000:Monocytes / Q000378:metabolism*