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Comment
. 2012 Nov 15;18(22):6086-8.
doi: 10.1158/1078-0432.CCR-12-2801. Epub 2012 Oct 10.

Regulatory T cells move in when gliomas say "I Do"

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Comment

Regulatory T cells move in when gliomas say "I Do"

Bryan D Choi et al. Clin Cancer Res. .

Abstract

Indoleamine 2,3-dioxygenase (IDO) is an enzyme with known immunosuppressive and tolerogenic effects in cancer. Mounting evidence has associated IDO expression with the induction of regulatory T cells (Treg) and malignant progression. IDO inhibition may therefore provide a promising therapeutic approach for glioblastoma, where the need for novel treatment is great.

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Conflict of interest statement

The authors do not report conflicts of interest.

Figures

Figure 1
Figure 1
Tregs accumulate in brain tumors and are associated with poor prognosis. Peripheral depletion with anti-CD25 antibodies and CTLA-4 blockade are methods by which antitumor immune responses may be enhanced. IDO-mediated catabolism of tryptophan occurs in both tumor cells and peripherally in DCs. Here, IDO enzymatic activity potentiates an immune tolerogenic environment resulting in the reciprocal induction of Tregs amidst a suppressed effector T-cell response.

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References

    1. Wainwright DA, Balyasnikova IV, Chang AL, Ahmed AU, Moon KS, Auffinger B, et al. IDO expression in brain tumors increases the recruitment of regulatory T cells and negatively impacts survival. Clin Cancer Res. 2012 - PMC - PubMed
    1. Mitchell DA, Fecci PE, Sampson JH. Immunotherapy of malignant brain tumors. Immunol Rev. 2008;222:70–100. - PMC - PubMed
    1. Fecci PE, Mitchell DA, Whitesides JF, Xie W, Friedman AH, Archer GE, et al. Increased regulatory T-cell fraction amidst a diminished CD4 compartment explains cellular immune defects in patients with malignant glioma. Cancer Res. 2006;66:3294–302. - PubMed
    1. El Andaloussi A, Lesniak MS. An increase in CD4+CD25+FOXP3+ regulatory T cells in tumor-infiltrating lymphocytes of human glioblastoma multiforme. Neuro Oncol. 2006;8:234–43. - PMC - PubMed
    1. Biollaz G, Bernasconi L, Cretton C, Puntener U, Frei K, Fontana A, et al. Site-specific anti-tumor immunity: differences in DC function, TGF-beta production and numbers of intratumoral Foxp3+ Treg. Eur J Immunol. 2009;39:1323–33. - PubMed

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