Abstract
We describe a method to measure in vivo migration of human T cells by using the near-infrared (NIR) dye IRDye800CW, Labeling of Epstein-Barr virus-specific T cells with IRDye800CW did not affect viability, proliferation, or T cell function. Following tail vein injection into mice bearing subcutaneous tumors, the NIR signal could be measured in vivo at the tumor site. Analysis of tumors revealed T cell infiltration and an increased NIR signal, confirming T cell migration. To test specific migration with IRDye800CW, tumors were modified to express CCL5 to measure site-specific migration. The NIR signal was increased at CCL5-secreting tumors compared with control tumors. Together, these data suggest that IRDye800CW may be used to study the trafficking of T cells in a small animal model and may have potential as a shortterm reporter molecule for human immunotherapy studies.
Original language | English (US) |
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Pages (from-to) | 5944-5952 |
Number of pages | 9 |
Journal | Applied Optics |
Volume | 47 |
Issue number | 31 |
DOIs | |
State | Published - Nov 1 2008 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Engineering (miscellaneous)
- Electrical and Electronic Engineering