PMID- 12406887 OWN - NLM STAT- MEDLINE DCOM- 20030401 LR - 20231213 IS - 0006-4971 (Print) IS - 0006-4971 (Linking) VI - 101 IP - 5 DP - 2003 Mar 1 TI - Simian immunodeficiency virus dramatically alters expression of homeostatic chemokines and dendritic cell markers during infection in vivo. PG - 1684-91 AB - Dendritic cells (DCs) are potent antigen-presenting cells that likely play multiple roles in human immunodeficiency virus type 1 (HIV-1) pathogenesis. We used the simian immunodeficiency virus (SIV)/macaque model to study the effects of infection on homeostatic chemokine expression and DC localization directly in secondary lymphoid tissues. SIV infection altered the expression of chemokines (CCL19/MIP-3beta, CCL21/ 6Ckine, and CCL20/MIP-3alpha) and of chemokine receptors (CCR7 and CCR6) that drive DC trafficking. CCL19/MIP-3beta, CCL20/MIP-3alpha, CCR6, and CCR7 expression increased in lymph nodes during the early systemic burst of viral replication (acute infection), whereas CCL21/6Ckine expression progressively decreased throughout disease to AIDS. Parallel with the SIV-induced perturbations in chemokine expression were changes in the expression of the DC-associated markers, DC-SIGN, DC-LAMP, and DECTIN-1. During AIDS, DC-LAMP mRNA expression levels were significantly reduced in lymph nodes and spleen, and DC-SIGN levels were significantly reduced in spleen. These findings suggest that the disruption of homeostatic chemokine expression is responsible, in part, for alterations in the networks of antigen-presenting cells in lymphoid tissues, ultimately contributing to systemic immunodeficiency. FAU - Choi, Yang Kyu AU - Choi YK AD - Department of Infectious Diseases and Microbiology and the Department of Molecular Genetics and Biochemistry, University of Pittsburgh, PA. FAU - Fallert, Beth A AU - Fallert BA FAU - Murphey-Corb, Michael A AU - Murphey-Corb MA FAU - Reinhart, Todd A AU - Reinhart TA LA - eng GR - HL62056/HL/NHLBI NIH HHS/United States GR - MH61205/MH/NIMH NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. DEP - 20021024 PL - United States TA - Blood JT - Blood JID - 7603509 RN - 0 (Antigens, CD) RN - 0 (CCL19 protein, human) RN - 0 (CCL20 protein, human) RN - 0 (CCL21 protein, human) RN - 0 (CCR6 protein, human) RN - 0 (CCR7 protein, human) RN - 0 (Cell Adhesion Molecules) RN - 0 (Chemokine CCL19) RN - 0 (Chemokine CCL20) RN - 0 (Chemokine CCL21) RN - 0 (Chemokines) RN - 0 (Chemokines, CC) RN - 0 (DC-specific ICAM-3 grabbing nonintegrin) RN - 0 (Lectins, C-Type) RN - 0 (Lysosomal Membrane Proteins) RN - 0 (Macrophage Inflammatory Proteins) RN - 0 (Membrane Proteins) RN - 0 (Nerve Tissue Proteins) RN - 0 (Receptors, CCR6) RN - 0 (Receptors, CCR7) RN - 0 (Receptors, Cell Surface) RN - 0 (Receptors, Chemokine) RN - 0 (dectin 1) SB - IM MH - Animals MH - Antigens, CD/biosynthesis/genetics MH - Cell Adhesion Molecules/biosynthesis/genetics MH - Chemokine CCL19 MH - Chemokine CCL20 MH - Chemokine CCL21 MH - Chemokines/*biosynthesis/genetics MH - Chemokines, CC/biosynthesis/genetics MH - Dendritic Cells/metabolism/*pathology MH - Disease Progression MH - *Gene Expression Regulation, Viral MH - Homeostasis MH - Lectins, C-Type/biosynthesis/genetics MH - Lymph Nodes/metabolism/pathology MH - Lysosomal Membrane Proteins MH - Macaca mulatta MH - Macrophage Inflammatory Proteins/biosynthesis/genetics MH - Membrane Proteins/biosynthesis/genetics MH - Nerve Tissue Proteins/biosynthesis/genetics MH - Receptors, CCR6 MH - Receptors, CCR7 MH - Receptors, Cell Surface/biosynthesis/genetics MH - Receptors, Chemokine/*biosynthesis/genetics MH - Simian Acquired Immunodeficiency Syndrome/immunology/*metabolism/pathology MH - Simian Immunodeficiency Virus/*physiology MH - Spleen/metabolism/pathology MH - Virus Replication EDAT- 2002/10/31 04:00 MHDA- 2003/04/02 05:00 CRDT- 2002/10/31 04:00 PHST- 2002/10/31 04:00 [pubmed] PHST- 2003/04/02 05:00 [medline] PHST- 2002/10/31 04:00 [entrez] AID - S0006-4971(20)50855-0 [pii] AID - 10.1182/blood-2002-08-2653 [doi] PST - ppublish SO - Blood. 2003 Mar 1;101(5):1684-91. doi: 10.1182/blood-2002-08-2653. Epub 2002 Oct 24.