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Int. J. Mol. Sci. 2015, 16(3), 5497-5509; doi:10.3390/ijms16035497

Helper T Lymphocyte Response in the Peripheral Blood of Patients with Intraepithelial Neoplasia Submitted to Immunotherapy with Pegylated Interferon-α

Oncology Research Institute (IPON), Federal University of the TriânguloMineiro (UFTM), Uberaba, Minas Gerais 38022-200, Brazil
Discipline of Immunology, UFTM, Uberaba, Minas Gerais 38022-200, Brazil
Discipline of Gynecology and Obstetrics, UFTM, Uberaba, Minas Gerais 38022-200, Brazil
Author to whom correspondence should be addressed.
Academic Editor: Kamal D. Moudgil
Received: 16 November 2014 / Revised: 19 February 2015 / Accepted: 27 February 2015 / Published: 10 March 2015
(This article belongs to the Special Issue Mechanism of Action and Applications of Cytokines in Immunotherapy)
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Immunotherapy in cancer patients is a very promising treatment and the development of new protocols and the study of the mechanisms of regression is imperative. The objective of this study was to evaluate the production of cytokines in helper T (CD4+) lymphocytes during immunotherapy with pegylated IFN-α in patients with cervical intraepithelial neoplasia (CIN). We conducted a prospective study with 17 patients with CIN II-III using immunotherapy with pegylated IFN-α subcutaneouly weekly, and using flow cytometry we evaluated the peripheric CD4+ T lymphocytes. The results show that in the regression group the patients presented a significant increase in the amount of IFN-γ during the entire immunotherapy, compared with the group without a response. The amount of CD4+ T lymphocytes positive for IL-2, IL-4, IL-10 and TGF-β is significantly lower in patients with good clinical response. The results also demonstrate that patients with regression have a higher amount of intracellular TNF-α in CD4+ T lymphocytes before the start of treatment. Analyzing these data sets, it can be concluded that immunotherapy is a viable clinical treatment for patients with high-grade CIN and that the regression is dependent on the change in the immune response to a Th1 pattern. View Full-Text
Keywords: immunotherapy; cervical cancer; IFN-α and T lymphocytes immunotherapy; cervical cancer; IFN-α and T lymphocytes

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Michelin, M.A.; Montes, L.; Nomelini, R.S.; Trovó, M.A.; Murta, E.F.C. Helper T Lymphocyte Response in the Peripheral Blood of Patients with Intraepithelial Neoplasia Submitted to Immunotherapy with Pegylated Interferon-α. Int. J. Mol. Sci. 2015, 16, 5497-5509.

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