PMID- 20219468 OWN - NLM STAT- MEDLINE DCOM- 20100429 LR - 20181113 IS - 1872-7905 (Electronic) IS - 0022-1759 (Print) IS - 0022-1759 (Linking) VI - 356 IP - 1-2 DP - 2010 Apr 30 TI - Using carbon magnetic nanoparticles to target, track, and manipulate dendritic cells. PG - 47-59 LID - 10.1016/j.jim.2010.02.009 [doi] AB - Dendritic cells (DCs) are crucial in the initiation of immune responses and are primary targets in vaccination. Here, we describe fluorescent, carbon magnetic nanoparticles (CMNPs) within the 20-80 nm size range that are non-toxic and preferentially endocytosed by DCs. These attributes allow for DC tracing in vitro, ex vivo and in vivo, by both fluorescence and MRI. We show that CMNPs conjugated with an array of proteins are able to induce strong immune responses in mice. The addition of TLR ligand, CpG, to the CMNPs along with protein results in both T cell activation, but also a selective IFNgamma response. The magnetism afforded by the CMNPs facilitates a simple DC enrichment ex vivo by magnetic means from both secondary lymphoid organs, and sites of chronic inflammation. The magnetic and fluorescent properties of the CMNPs allow for visualization, recovery, and potentially the facilitation of directed DC migration. These particles may support more efficient immunization protocols or new diagnostic assays to characterize functionalities of DCs from patients. CI - 2010 Elsevier B.V. All rights reserved. FAU - Schreiber, Heidi A AU - Schreiber HA AD - University of Wisconsin Department of Pathology and Laboratory Sciences, 1300 University Avenue, Madison, WI 53705, USA. hschreiber@wisc.edu FAU - Prechl, Jozsef AU - Prechl J FAU - Jiang, Hongquan AU - Jiang H FAU - Zozulya, Alla AU - Zozulya A FAU - Fabry, Zsuzsanna AU - Fabry Z FAU - Denes, Ferencz AU - Denes F FAU - Sandor, Matyas AU - Sandor M LA - eng GR - R21-A1072638/PHS HHS/United States GR - R01 NS037570-09A2/NS/NINDS NIH HHS/United States GR - R01 NS037570-08/NS/NINDS NIH HHS/United States GR - R01 NS037570-10/NS/NINDS NIH HHS/United States GR - R01 NS037570-11/NS/NINDS NIH HHS/United States GR - R01 NS037570/NS/NINDS NIH HHS/United States GR - R01-A1048087/PHS HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20100226 PL - Netherlands TA - J Immunol Methods JT - Journal of immunological methods JID - 1305440 RN - 7440-44-0 (Carbon) SB - IM MH - Animals MH - Carbon/*chemistry MH - Cell Movement MH - Cells, Cultured MH - Dendritic Cells/*chemistry/cytology/immunology MH - Lymphocyte Activation MH - *Magnetics MH - Mice MH - Mice, Transgenic MH - Microscopy, Electron, Scanning MH - Microscopy, Electron, Transmission MH - Nanoparticles/*chemistry/ultrastructure MH - T-Lymphocytes/immunology PMC - PMC2937839 MID - NIHMS184623 EDAT- 2010/03/12 06:00 MHDA- 2010/04/30 06:00 PMCR- 2011/04/30 CRDT- 2010/03/12 06:00 PHST- 2009/11/24 00:00 [received] PHST- 2010/02/14 00:00 [revised] PHST- 2010/02/17 00:00 [accepted] PHST- 2010/03/12 06:00 [entrez] PHST- 2010/03/12 06:00 [pubmed] PHST- 2010/04/30 06:00 [medline] PHST- 2011/04/30 00:00 [pmc-release] AID - S0022-1759(10)00043-8 [pii] AID - 10.1016/j.jim.2010.02.009 [doi] PST - ppublish SO - J Immunol Methods. 2010 Apr 30;356(1-2):47-59. doi: 10.1016/j.jim.2010.02.009. Epub 2010 Feb 26.