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Effects of stimulating interleukin -2/anti- interleukin -2 antibody complexes on renal cell carcinoma

Cited 1 time in Web of Science Cited 1 time in Scopus
Authors
Han, Kyu-Hyun; Kim, Ki Won; Yan, Ji-Jing; Lee, Jae-Ghi; Lee, Eun Mi; Han, Miyeon; Cho, Eun Jin; Kang, Seong Sik; Lim, Hye Jin; Koo, Tai Yeon; Ahn, Curie; Yang, Jaeseok
Issue Date
2016-01-16
Publisher
BioMed Central
Citation
BMC Urology, 16(1):2
Keywords
CD8+ T cellImmune complexInterleukin-2NK cellRenal cell carcinomaTumor
Abstract
Abstract

Background
Current therapies for advanced renal cell carcinoma (RCC) have low cure rates or significant side effects. It has been reported that complexes composed of interleukin (IL)-2 and stimulating anti-IL-2 antibody (IL-2C) suppress malignant melanoma growth. We investigated whether it could have similar effects on RCC.


Methods
A syngeneic RCC model was established by subcutaneously injecting RENCA cells into BALB/c mice, which were administered IL-2C or phosphate-buffered saline every other day for 4 weeks. RCC size was measured serially, and its weight was assessed 4 weeks after RENCA injection. Immune cell infiltration into RCC lesions and spleen was assessed by flow cytometry and immunohistochemistry.


Results
IL-2C treatment increased the numbers of CD8+ memory T and natural killer (NK) cells in healthy BALB/c mice (P < 0.01). In the spleen of RCC mice, IL-2C treatment also increased the number of CD8+ memory T, NK cells, and macrophages as compared to PBS-treated controls (P < 0.01). The number of interferon-γ- and IL-10-producing splenocytes increased and decreased, respectively after 4 weeks in the IL-2C-treated mice (P < 0.01). Tumor-infiltrating immune cells including CD4+ T, CD8+ T, NK cells as well as macrophages were increased in IL-2C-treated mice than controls (P < 0.05). Pulmonary edema, the most serious side effect of IL-2 therapy, was not exacerbated by IL-2C treatment. However, IL-2C had insignificant inhibitory effect on RCC growth (P = 0.1756).


Conclusions
IL-2C enhanced immune response without significant side effects; however, this activity was not sufficient to inhibit RCC growth in a syngeneic, murine model.
Language
English
URI
http://hdl.handle.net/10371/100505
DOI
https://doi.org/10.1186/s12894-016-0121-2
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College of Medicine/School of Medicine (의과대학/대학원)Dept. of Medicine (의학과)Journal Papers (저널논문_의학과)
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