Dynamic tracing of immune cells in an orthotopic gastric carcinoma mouse model using near-infrared fluorescence live imaging

  • Authors:
    • Xiaohui Du
    • Xiangyu Wang
    • Ning Ning
    • Shaoyou Xia
    • Juchao Liu
    • Wentao Liang
    • Huiwei Sun
    • Yingxin Xu
  • View Affiliations

  • Published online on: May 17, 2012     https://doi.org/10.3892/etm.2012.579
  • Pages: 221-225
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Abstract

Adoptive cellular immunotherapy (ACI) has been demonstrated to be a promising cancer therapeutic, however, the distribution of immune cells injected into a tumor-bearing body is unclear. In this study, we investigated the tumor‑targeting capacity of cytokine-induced killer (CIK) cells and cytotoxic T lymphocytes (CTLs) in a human gastric carcinoma orthotopic mouse model using a near-infrared fluorescence imaging system. CIK cells and tumor-specific CTLs were prepared with the near-infrared fluorescent dye DiR. As expected, no significant change in the proliferation rate or antitumor activity of CIK cells and CTLs was noted after labeling with DiR. Furthermore, a gastric carcinoma orthotopic model was established using a fibrinogen-thrombin method in nude mice followed by intraperitoneal infusion of the labeled immune cells into nude mice with established gastric carcinoma. Dynamic tracing of the immune cells was performed using a fluorescence-based live imaging system. Concentrated fluorescence signals were observed for a minimum of two weeks at the tumor site in mice infused with either CIK cells or CTLs with a peak signal at 48 h. Notably, CTLs were more persistent at the tumor site and exhibited a more intense antitumor activity than CIK cells following infusion. These results provided visual evidence of the tumor-targeting capacity of immune cells in live animals.
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August 2012
Volume 4 Issue 2

Print ISSN: 1792-0981
Online ISSN:1792-1015

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Spandidos Publications style
Du X, Wang X, Ning N, Xia S, Liu J, Liang W, Sun H and Xu Y: Dynamic tracing of immune cells in an orthotopic gastric carcinoma mouse model using near-infrared fluorescence live imaging. Exp Ther Med 4: 221-225, 2012
APA
Du, X., Wang, X., Ning, N., Xia, S., Liu, J., Liang, W. ... Xu, Y. (2012). Dynamic tracing of immune cells in an orthotopic gastric carcinoma mouse model using near-infrared fluorescence live imaging. Experimental and Therapeutic Medicine, 4, 221-225. https://doi.org/10.3892/etm.2012.579
MLA
Du, X., Wang, X., Ning, N., Xia, S., Liu, J., Liang, W., Sun, H., Xu, Y."Dynamic tracing of immune cells in an orthotopic gastric carcinoma mouse model using near-infrared fluorescence live imaging". Experimental and Therapeutic Medicine 4.2 (2012): 221-225.
Chicago
Du, X., Wang, X., Ning, N., Xia, S., Liu, J., Liang, W., Sun, H., Xu, Y."Dynamic tracing of immune cells in an orthotopic gastric carcinoma mouse model using near-infrared fluorescence live imaging". Experimental and Therapeutic Medicine 4, no. 2 (2012): 221-225. https://doi.org/10.3892/etm.2012.579