PMID- 15604223 OWN - NLM STAT- MEDLINE DCOM- 20050607 LR - 20210206 IS - 0006-4971 (Print) IS - 1528-0020 (Electronic) IS - 0006-4971 (Linking) VI - 105 IP - 9 DP - 2005 May 1 TI - Reversal of long-term sepsis-induced immunosuppression by dendritic cells. PG - 3588-95 AB - Severe sepsis leads to long-term systemic and local immunosuppression, which is the cause of a number of complications, including pulmonary infection. A therapeutic strategy that reverses this immunosuppression is required, given the ongoing high mortality rate of patients who have survived a severe sepsis. The present study demonstrates that experimental severe sepsis renders the lung susceptible to a normally innocuous Aspergillus fumigatus fungus challenge, due to a dominant lung type 2 cytokine profile. Dendritic cells (DCs) obtained from the lungs of mice subjected to cecal ligation and puncture (CLP) model were skewed toward type 2 cytokine profile, which occurred with exaggerated expression of Toll-like receptor 2 (TLR2). The intrapulmonary transfer of bone marrow-derived DCs (BMDCs) in postseptic mice prevented fatal Aspergillus infection. This therapy reduced the overall inflammatory response and fungal growth in the lung, and promoted the balance of proinflammatory and suppressive cytokines in the lung. Thus, intrapulmonary DC supplementation appears to restore the pulmonary host response in the postseptic lung in our animal model. These data strongly suggest that lung DCs are profoundly affected as a consequence of the systemic impact of severe sepsis, and the identification of mechanisms that restore their function may serve as a key strategy to reverse sepsis-induced immunosuppression. FAU - Benjamim, Claudia F AU - Benjamim CF AD - Department of Pathology, University of Michigan, Medical School, 1301 Catherine St, Ann Arbor, MI 48109-0602, USA. FAU - Lundy, Steven K AU - Lundy SK FAU - Lukacs, Nicholas W AU - Lukacs NW FAU - Hogaboam, Cory M AU - Hogaboam CM FAU - Kunkel, Steven L AU - Kunkel SL LA - eng GR - HL069865/HL/NHLBI NIH HHS/United States GR - HL31237/HL/NHLBI NIH HHS/United States GR - P50 HL60289/HL/NHLBI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. DEP - 20041216 PL - United States TA - Blood JT - Blood JID - 7603509 RN - 0 (Cytokines) RN - 147336-22-9 (Green Fluorescent Proteins) SB - IM MH - Animals MH - Aspergillosis/immunology MH - Aspergillus fumigatus MH - Cytokines/immunology MH - Dendritic Cells/*immunology MH - Female MH - Gene Expression Regulation/immunology MH - Green Fluorescent Proteins/genetics MH - *Immune Tolerance MH - Lung Diseases, Fungal/immunology MH - Mice MH - Mice, Inbred C57BL MH - Mice, Transgenic MH - Sepsis/*immunology/microbiology MH - Th2 Cells/immunology PMC - PMC1895017 EDAT- 2004/12/18 09:00 MHDA- 2005/06/09 09:00 PMCR- 2006/05/01 CRDT- 2004/12/18 09:00 PHST- 2004/12/18 09:00 [pubmed] PHST- 2005/06/09 09:00 [medline] PHST- 2004/12/18 09:00 [entrez] PHST- 2006/05/01 00:00 [pmc-release] AID - S0006-4971(20)45554-5 [pii] AID - 01053588 [pii] AID - 10.1182/blood-2004-08-3251 [doi] PST - ppublish SO - Blood. 2005 May 1;105(9):3588-95. doi: 10.1182/blood-2004-08-3251. Epub 2004 Dec 16.