A microdevice for multiplexed detection of T-cell-secreted cytokines

He Zhu, Gulnaz Stybayeva, Monica MacAl, Erlan Ramanculov, Michael D. George, Satya Dandekar, Alexander Revzin

Research output: Contribution to journalArticle

75 Citations (Scopus)

Abstract

Cytokines are produced by immune cells in response to viral or bacterial pathogens and therefore have significant diagnostic value. The goal of the present study was to develop a miniature device for detection of interleukin (IL)-2 and interferon (IFN)-γ cytokines secreted by a small population of CD4 and CD8 T-cells. Microarrays of T-cell- and cytokine-specific Ab spots were printed onto poly(ethylene glycol) (PEG) hydrogel-coated glass slides and enclosed inside a microfluidic device, creating a miniature (∼3 μL) immunoreaction chamber. Introduction of the red blood cell (RBC) depleted whole human blood into the microfluidic device followed by washing at a pre-defined shear stress resulted in isolation of pure CD4 and CD8 T-cells on their respective Ab spots. Importantly, the cells became localized next to anti-IL-2 and -IFN-γ Ab spots. Mitogenic activation of the captured T-cells was followed by immunofluorescent staining (all steps carried out inside a microfluidic device), revealing concentration gradients of surface-bound cytokine molecules. A microarray scanner was then used to quantify the concentration of IFN-γ and IL-2 near CD4 and CD8 T-cells. This study represents one of the first demonstrations of a microdevice for capturing desired T-cell subsets from a small blood volume and determining, on-chip, cytokine profiles of the isolated cells. Such a microdevice is envisioned as an immunology tool for multi-parametric analysis of T-cell function with direct applications in diagnosis/monitoring of HIV and other infectious diseases.

Original languageEnglish
Pages (from-to)2197-2205
Number of pages9
JournalLab on a Chip - Miniaturisation for Chemistry and Biology
Volume8
Issue number12
DOIs
Publication statusPublished - 2008
Externally publishedYes

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T-cells
Lab-On-A-Chip Devices
Cytokines
T-Lymphocytes
Interferons
Interleukin-2
Microfluidics
Blood
Microarrays
Polyethylene glycols
Immunology
Ethylene Glycol
Hydrogel
T-Lymphocyte Subsets
Allergy and Immunology
Blood Volume
Pathogens
Glass
Communicable Diseases
Washing

ASJC Scopus subject areas

  • Biochemistry
  • Chemistry(all)
  • Bioengineering
  • Biomedical Engineering

Cite this

A microdevice for multiplexed detection of T-cell-secreted cytokines. / Zhu, He; Stybayeva, Gulnaz; MacAl, Monica; Ramanculov, Erlan; George, Michael D.; Dandekar, Satya; Revzin, Alexander.

In: Lab on a Chip - Miniaturisation for Chemistry and Biology, Vol. 8, No. 12, 2008, p. 2197-2205.

Research output: Contribution to journalArticle

Zhu, He ; Stybayeva, Gulnaz ; MacAl, Monica ; Ramanculov, Erlan ; George, Michael D. ; Dandekar, Satya ; Revzin, Alexander. / A microdevice for multiplexed detection of T-cell-secreted cytokines. In: Lab on a Chip - Miniaturisation for Chemistry and Biology. 2008 ; Vol. 8, No. 12. pp. 2197-2205.
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