PMID- 21375342 OWN - NLM STAT- MEDLINE DCOM- 20110801 LR - 20211020 IS - 1936-086X (Electronic) IS - 1936-0851 (Print) IS - 1936-0851 (Linking) VI - 5 IP - 3 DP - 2011 Mar 22 TI - Nanoparticles targeting dendritic cell surface molecules effectively block T cell conjugation and shift response. PG - 1693-702 LID - 10.1021/nn102159g [doi] AB - Dendritic cells (DCs) are potent professional antigen presenting cells (APC) that activate naive T cells. Interaction of ICAM-1 and LFA-1 molecules on each cell is required for T cell conjugation to DCs, which leads to naive CD4+ T cell activation and proliferation. Nanoparticles capable of blocking LFA-1/ICAM-1 interaction were studied as inhibitors of T cell conjugation to DCs. Primary DCs were primed with ovalbumin, then treated with a peptide that binds ICAM-1 (LABL), a peptide that binds LFA-1 (cIBR), or the same peptides covalently linked to the surface of poly(dl-lactic-co-glycolic acid) nanoparticles (NPs). LABL-NPs and cIBR-NPs rapidly bound to DCs and inhibited T cell conjugation to DCs to a greater extent than the free peptides, unconjugated nanoparticles (NPs), anti-ICAM-1 antibodies, and anti-LFA-1 antibodies. In addition, DCs treated with NPs or with cIBR-NPs stimulated the proliferation of T cells, but DCs treated with LABL-NPs did not stimulate T cell proliferation. Nanoparticles targeting ICAM-1 or LFA-1 also altered cytokine production by DC cocultured with T cells when compared to free ligands, suggesting that these NPs may offer a unique tool for shaping T cell response. FAU - Chittasupho, Chuda AU - Chittasupho C AD - Department of Pharmaceutical Chemistry, University of Kansas, Lawrence, Kansas 66047, United States. FAU - Shannon, Laura AU - Shannon L FAU - Siahaan, Teruna J AU - Siahaan TJ FAU - Vines, Charlotte M AU - Vines CM FAU - Berkland, Cory AU - Berkland C LA - eng GR - T32 GM08359-11/GM/NIGMS NIH HHS/United States GR - R56 AI091996/AI/NIAID NIH HHS/United States GR - T32 GM008359/GM/NIGMS NIH HHS/United States GR - R56-AI063002/AI/NIAID NIH HHS/United States GR - R56 AI063002/AI/NIAID NIH HHS/United States GR - R03 AR054035/AR/NIAMS NIH HHS/United States GR - K22AI060815/AI/NIAID NIH HHS/United States GR - R01 AI063002/AI/NIAID NIH HHS/United States GR - R01-AI063002/AI/NIAID NIH HHS/United States GR - P20 RR016443/RR/NCRR NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20110304 PL - United States TA - ACS Nano JT - ACS nano JID - 101313589 RN - 0 (Membrane Proteins) SB - IM MH - Cells, Cultured MH - Dendritic Cells/cytology/drug effects/*physiology MH - Drug Delivery Systems/methods MH - Humans MH - Membrane Proteins/*metabolism MH - Nanostructures/*administration & dosage MH - T-Lymphocytes/cytology/drug effects/physiology PMC - PMC4207654 MID - NIHMS633857 EDAT- 2011/03/08 06:00 MHDA- 2011/08/02 06:00 PMCR- 2014/10/23 CRDT- 2011/03/08 06:00 PHST- 2011/03/08 06:00 [entrez] PHST- 2011/03/08 06:00 [pubmed] PHST- 2011/08/02 06:00 [medline] PHST- 2014/10/23 00:00 [pmc-release] AID - 10.1021/nn102159g [doi] PST - ppublish SO - ACS Nano. 2011 Mar 22;5(3):1693-702. doi: 10.1021/nn102159g. Epub 2011 Mar 4.