Journal
AMERICAN JOURNAL OF PHYSIOLOGY-LUNG CELLULAR AND MOLECULAR PHYSIOLOGY
Volume 287, Issue 3, Pages L552-L558Publisher
AMER PHYSIOLOGICAL SOC
DOI: 10.1152/ajplung.00436.2003
Keywords
CpG motif; lung
Categories
Funding
- NHLBI NIH HHS [HL-32154] Funding Source: Medline
- NIGMS NIH HHS [GM-53789] Funding Source: Medline
Ask authors/readers for more resources
Although the CpG DNA immune response mediated by Toll-like receptor 9 (TLR9) has been extensively studied in a number of immune cells, the response to CpG DNA in endothelial cells (EC) is not well understood. In this study, we show that both mouse and rat lung EC display constitutive expression of TLR9 mRNA. Exposure to CpG DNA induced a potent proinflammatory response as manifested by an increased expression of IL-8 and ICAM-1 in mouse pulmonary EC. The proinflammatary response was sensitive to chloroquine, consistent with a role of endosomal contribution. A role for p38 MAPK and NF-kappaB pathway was apparent as the response was sensitive to inhibitors of p38 MAPK and NF-kappaB but was not affected by inhibitors of ERK1/2. A synergistic effect of CpG DNA and LPS on the inflammatory response is consistent with multiple TLR interaction in EC. This study suggests a possible role for CpG DNA-mediated EC immune response in the host defense system. It also has important implications in plasmid DNA-mediated pulmonary endothelium gene transfer.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available