کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2123368 1547193 2011 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Immunomodulatory effects of sorafenib on peripheral immune effector cells in metastatic renal cell carcinoma
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی تحقیقات سرطان
پیش نمایش صفحه اول مقاله
Immunomodulatory effects of sorafenib on peripheral immune effector cells in metastatic renal cell carcinoma
چکیده انگلیسی

BackgroundTyrosine kinase inhibitors (TKI) such as sorafenib have substantially improved the prognosis of metastatic renal cell carcinoma (mRCC) patients, but long-term remissions have only been reached with immunotherapy. Sequencing or combining TKI treatment with immunotherapy may represent an attractive therapeutic concept. However, in vitro data have shown that TKI may not only affect tumour cells, but also inhibit signalling in immune effector cells. Therefore, we asked whether sorafenib had an influence on peripheral immune effector cells in a cohort of 35 mRCC patients receiving sorafenib treatment.MethodsPeripheral blood (pB) samples were analysed at baseline and after 8 weeks of treatment. IL-10 and TGF-ß mRNA levels were quantified by RT-PCR; regulatory T cell (Treg) counts and intracellular cytokine responses (TNF-α, IFN-γ, IL-10 and TGF-ß) of mononuclear cell subsets were determined by flow cytometry after in vitro stimulation with PMA/ionomycin.ResultsSorafenib did not alter the elevated TGF-ß and IL-10 mRNA levels or elevated frequencies of IL-10 and TGF-ß producing monocytes and had no influence on type 1 cytokine responses in pB. CD4+CD25high FOXP3+/CD3+ T cells, likely representing Treg cells, decreased during sorafenib therapy.ConclusionsIn vivo, sorafenib treatment was associated with a decrease in frequency of Treg cells without influencing the function of peripheral immune effector cells. Therefore, although sorafenib did not convert the immunosuppressive phenotype associated with mRCC, it seemed to be a possible candidate for combination with immunotherapy.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: European Journal of Cancer - Volume 47, Issue 5, March 2011, Pages 690–696
نویسندگان
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