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The use of Wavelength Modulated Raman Spectroscopy in label-free identification of T lymphocyte subsets, Natural Killer cells and Dendritic cells

Research output: Contribution to journalArticle

Author(s)

Mingzhou Chen, Naomi McReynolds, Elaine Catherine Campbell, Michael Mazilu, Joao Barbosa, Kishan Dholakia, Simon John Powis

School/Research organisations

Abstract

Determining the identity of cells of the immune system usually involves destructive fixation and chemical staining, or labeling with fluorescently labeled antibodies recognising specific cell surface markers. Completely label-free identification would be a significant advantage in conditions where untouched cells are a priority. We demonstrate here the use of Wavelength Modulated Raman Spectroscopy, to achieve label-free identification of purified, unfixed and untouched populations of major immune cell subsets isolated from healthy human donors. Using this technique we have been able to distinguish between CD4+ T lymphocytes, CD8+ T lymphocytes and CD56+ Natural Killer cells at specificities of up to 96%. Additionally, we have been able to distinguish between CD303+ plasmacytoid and CD1c+ myeloid dendritic cell subsets, the key initiator and regulatory cells of many immune responses. This demonstrates the ability to identify unperturbed cells of the immune system, and opens novel opportunities to analyse immunological systems and to develop fully label-free diagnostic technologies.

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Details

Original languageEnglish
Article numbere0125158
JournalPLoS One
Volume10
Issue number5
DOIs
Publication statusPublished - 20 May 2015

    Research areas

  • Raman spectroscopy, Dendritic cells, Natural killer cells, T Lymphocytes

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