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Interleukin 2-mediated conversion of ovarian cancer-associated CD4+ regulatory T cells into proinflammatory interleukin 17-producing helper T cells. Leveque L, Deknuydt F, Bioley G, Old LJ, Matsuzaki J, Odunsi K, Ayyoub M, Valmori D. J Immunother. 2009 Feb-Mar;32(2):101-8. PMID: 19238008 doi: 10.1097/CJI.0b013e318195b59e Thus, although the impact of TH17 cells on the evolution of EOC remains to be established, our data suggest that local IL-2 treatment in ovarian cancer may result in the conversion of tumor-associated Treg into TH17 cells, relieve Treg-mediated suppression, and contribute to enhance antitumor immunity.

CD40L - a multipotent molecule for tumor therapy. Loskog A, Tötterman TH. Endocr Metab Immune Disord Drug Targets. 2007 Mar;7(1):23-8. Review. PMID: 17346201

Preoperative treatment with a non-steroidal anti-inflammatory drug (NSAID) increases tumor tissue infiltration of seemingly activated immune cells in colorectal cancer. Lönnroth C, Andersson M, Arvidsson A, Nordgren S, Brevinge H, Lagerstedt K, Lundholm K. Cancer Immun. 2008 Feb 29;8:5. PMID: 18307280 MHC II protein (HLA-DP, -DQ, -DR) levels and infiltration by CD4+ T-helper cells of tumor stroma increased upon NSAID treatment, while CD8+ cytotoxic T-lymphocytes increased in both tumor stroma and epithelium. Molecules associated with immunosuppressive T regulatory cells (FOXP3, IL-10) were significantly decreased in indomethacin-exposed tumors. Standard oral administration of NSAID three days preoperatively was enough to increase tumor infiltration by seemingly activated immune cells. These findings agree with previous information that high pr

Multiple roles for CD4+ T cells in anti-tumor immune responses. Kennedy R, Celis E. Immunol Rev. 2008 Apr;222:129-44. Review. PMID: 18363998 DOI: 10.1111/j.1600-065X.2008.00616.x

The inflammatory Th 17 subset in immunity against self and non-self antigens. Jin D, Zhang L, Zheng J, Zhao Y. Autoimmunity. 2008 Mar;41(2):154-62. Review. PMID: 18324485 DOI: 10.1080/08916930701776605

T-helper/T-regulator lymphocyte ratio as a new immunobiological index to quantify the anticancer immune status in cancer patients. Brivio F, Fumagalli L, Parolini D, Messina G, Rovelli F, Rescaldani R, Vigore L, Vezzo R, Vaghi M, Di Bella S, Lissoni P. In Vivo. 2008 Sep-Oct;22(5):647-50. PMID: 18853761 RESULTS: The mean TH/TR ratio observed in patients with metasytases was significantly lower with respect to that found in both patients without metastases and controls. On the contrary, the absolute mean number of T-reg cells was higher in patients with metastases than in those without, but the difference was not statistically significant. CONCLUSION: The evaluation of T-reg cells in terms of their proportion with respect to T-helper cell total number seems to be more appropriate than the simple measurement of their absolute count, in order to quantify cancer-related immunosuppression. Thus, the TH/TR ratio could represent a useful biological marker to explore the immune status of cancer patients.

Inhibition of suppressor T lymphocytes (Ts) by cimetidine. Sahasrabudhe DM, McCune CS, O'Donnell RW, Henshaw EC. J Immunol. 1987 May 1;138(9):2760-3. PMID: 2952721 Cyclophosphamide (CY) is the most extensively studied inhibitor of suppressor T lymphocyte (Ts) function. However, repeated administration of CY can abrogate sensitization. Therefore, we were interested in identifying noncytotoxic inhibitors of Ts function as adjuncts in the immunotherapy of Ts-inducing murine tumors. The effect of cimetidine (a histamine type 2 receptor antagonist) and diphenhydramine (a histamine type 1 receptor antagonist) on the Ts mediating tolerance to 2,4-dinitrofluorobenzene was studied. We report our data regarding the specific inhibition of Ts by cimetidine.

The effect of dietary omega-3 polyunsaturated fatty acids on T-lymphocyte subsets of patients with solid tumors. Gogos CA, Ginopoulos P, Zoumbos NC, Apostolidou E, Kalfarentzos F. Cancer Detect Prev. 1995;19(5):415-7. PMID: 7585727