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Article

Exosomes derived from Rab27a‑overexpressing tumor cells elicit efficient induction of antitumor immunity

  • Authors:
    • Wenhai Li
    • Deguang Mu
    • Feng Tian
    • Yunsheng Hu
    • Tao Jiang
    • Yong Han
    • Jiakuan Chen
    • Guoliang Han
    • Xiaofei Li
  • View Affiliations / Copyright

    Affiliations: Department of Thoracic Surgery, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shaanxi 710038, P.R. China, Department of Respiratory Medicine, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shaanxi 710038, P.R. China, Department of Orthopaedic Surgery, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shaanxi 710038, P.R. China
  • Pages: 1876-1882
    |
    Published online on: October 18, 2013
       https://doi.org/10.3892/mmr.2013.1738
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Abstract

Lung cancer is the leading cause of mortality worldwide. However, there is a lack of effective therapeutic strategies. Currently, tumor immunotherapy based on exosomes, which are secreted by a variety of cell types including tumor cells, has drawn particular attention and are suggested to have the potential for exploitation in tumor therapy. Nevertheless, the therapeutic efficacy mediated via tumor cell‑derived exosomes is not satisfactory. Rab27a, one of the Rab family of small GTPases, has been suggested to be important in exosome secretion. Thus, the purpose of the present study was to examine whether exosomes derived from Rab27a‑overexpressing cells elicited more potent antitumor immunity. A Rab27a‑overexpressing line was established via transfection of a Rab27a overexpression vector into the human non‑small‑cell lung cancer cell line, A549. Exosomes were isolated and the typical exosomal protein markers, CD9, CD63, heat shock protein (Hsp) 70 and Hsp90, were found to be enriched in the exosomes derived from Rab27a‑overexpressing cells. Subsequently, these exosomes were demonstrated to be capable of upregulating major histocompatibility complex class II molecules as well as the co‑stimulatory molecules CD80 and CD86 on dendritic cells (DCs), suggesting that more potent maturation of DCs was induced. Furthermore, DCs loaded with exosomes derived from Rab27‑overexpressing cells significantly promoted CD4+ T cell proliferation in vitro. In addition, in vivo immunization of exosomes derived from Rab27a‑overexpressing cells inhibited tumor growth in a mouse model. It was also demonstrated that splenocytes from mice immunized with exosomes derived from Rab27‑overexpressing cells expressed high levels of type I cytokines, including IL‑2 and IFN‑γ, which are important in the regulation of cell‑mediated antitumor immunity. Collectively, it was demonstrated that exosomes derived from Rab27a‑overexpressing cancer cells elicited more potent antitumor immune effects, which may provide novel insights for the development of efficient exosome‑based cancer vaccines.
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Copy and paste a formatted citation
Spandidos Publications style
Li W, Mu D, Tian F, Hu Y, Jiang T, Han Y, Chen J, Han G and Li X: Exosomes derived from Rab27a‑overexpressing tumor cells elicit efficient induction of antitumor immunity. Mol Med Rep 8: 1876-1882, 2013.
APA
Li, W., Mu, D., Tian, F., Hu, Y., Jiang, T., Han, Y. ... Li, X. (2013). Exosomes derived from Rab27a‑overexpressing tumor cells elicit efficient induction of antitumor immunity. Molecular Medicine Reports, 8, 1876-1882. https://doi.org/10.3892/mmr.2013.1738
MLA
Li, W., Mu, D., Tian, F., Hu, Y., Jiang, T., Han, Y., Chen, J., Han, G., Li, X."Exosomes derived from Rab27a‑overexpressing tumor cells elicit efficient induction of antitumor immunity". Molecular Medicine Reports 8.6 (2013): 1876-1882.
Chicago
Li, W., Mu, D., Tian, F., Hu, Y., Jiang, T., Han, Y., Chen, J., Han, G., Li, X."Exosomes derived from Rab27a‑overexpressing tumor cells elicit efficient induction of antitumor immunity". Molecular Medicine Reports 8, no. 6 (2013): 1876-1882. https://doi.org/10.3892/mmr.2013.1738
Copy and paste a formatted citation
x
Spandidos Publications style
Li W, Mu D, Tian F, Hu Y, Jiang T, Han Y, Chen J, Han G and Li X: Exosomes derived from Rab27a‑overexpressing tumor cells elicit efficient induction of antitumor immunity. Mol Med Rep 8: 1876-1882, 2013.
APA
Li, W., Mu, D., Tian, F., Hu, Y., Jiang, T., Han, Y. ... Li, X. (2013). Exosomes derived from Rab27a‑overexpressing tumor cells elicit efficient induction of antitumor immunity. Molecular Medicine Reports, 8, 1876-1882. https://doi.org/10.3892/mmr.2013.1738
MLA
Li, W., Mu, D., Tian, F., Hu, Y., Jiang, T., Han, Y., Chen, J., Han, G., Li, X."Exosomes derived from Rab27a‑overexpressing tumor cells elicit efficient induction of antitumor immunity". Molecular Medicine Reports 8.6 (2013): 1876-1882.
Chicago
Li, W., Mu, D., Tian, F., Hu, Y., Jiang, T., Han, Y., Chen, J., Han, G., Li, X."Exosomes derived from Rab27a‑overexpressing tumor cells elicit efficient induction of antitumor immunity". Molecular Medicine Reports 8, no. 6 (2013): 1876-1882. https://doi.org/10.3892/mmr.2013.1738
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