Journal ArticleDOI
IDO expression by dendritic cells: tolerance and tryptophan catabolism.
Andrew L. Mellor,David H. Munn +1 more
TLDR
This review summarizes key recent developments and proposes a unifying model for the role of IDO in tolerance induction, including studies of mammalian pregnancy, tumour resistance, chronic infections and autoimmune diseases.Abstract:
Indoleamine 2,3-dioxygenase (IDO) is an enzyme that degrades the essential amino acid tryptophan. The concept that cells expressing IDO can suppress T-cell responses and promote tolerance is a relatively new paradigm in immunology. Considerable evidence now supports this hypothesis, including studies of mammalian pregnancy, tumour resistance, chronic infections and autoimmune diseases. In this review, we summarize key recent developments and propose a unifying model for the role of IDO in tolerance induction.read more
Citations
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Cancer immunotherapy comes of age
TL;DR: In the context of advances in the understanding of how tolerance, immunity and immunosuppression regulate antitumour immune responses, these successes suggest that active immunotherapy represents a path to obtain a durable and long-lasting response in cancer patients.
Journal ArticleDOI
Immune checkpoint blockade: a common denominator approach to cancer therapy
TL;DR: The immune system recognizes and is poised to eliminate cancer but is held in check by inhibitory receptors and ligands, so drugs interrupting immune checkpoints, such as anti-CTLA-4, anti-PD-1, and others in early development, can unleash anti-tumor immunity and mediate durable cancer regressions.
Journal ArticleDOI
T cell exhaustion
TL;DR: Advances in the molecular delineation of T cell exhaustion are clarifying the underlying causes of this state of differentiation and also suggest promising therapeutic opportunities.
Journal ArticleDOI
How regulatory T cells work.
TL;DR: The hypothesis that effector T cells may not be 'innocent' parties in this suppressive process and might in fact potentiate TReg-cell function is proposed.
Journal ArticleDOI
Human nutrition, the gut microbiome and the immune system.
Andrew L. Kau,Philip P. Ahern,Nicholas W. Griffin,Andrew L. Goodman,Andrew L. Goodman,Jeffrey I. Gordon +5 more
TL;DR: Understanding how the diet and nutritional status influence the composition and dynamic operations of the authors' gut microbial communities, and the innate and adaptive arms of the immune system, should help to address several pressing global health problems.
References
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Journal ArticleDOI
Cancer immunoediting: from immunosurveillance to tumor escape.
TL;DR: The historical and experimental basis of cancer immunoediting is summarized and its dual roles in promoting host protection against cancer and facilitating tumor escape from immune destruction are discussed.
Journal ArticleDOI
Tolerogenic dendritic cells.
TL;DR: It is suggested that several clinical situations, including autoimmunity and certain infectious diseases, can be influenced by the antigen-specific tolerogenic role of DCs.
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Regulated Translation Initiation Controls Stress-Induced Gene Expression in Mammalian Cells
Heather P. Harding,Isabel Novoa,Yuhong Zhang,Huiqing Zeng,Ronald C. Wek,Matthieu Schapira,David Ron +6 more
TL;DR: Protein kinases that phosphorylate the alpha subunit of eukaryotic initiation factor 2 (eIF2alpha) are activated in stressed cells and negatively regulate protein synthesis, resulting in the induction of the downstream gene CHOP (GADD153).
Journal ArticleDOI
An Integrated Stress Response Regulates Amino Acid Metabolism and Resistance to Oxidative Stress
Heather P. Harding,Yuhong Zhang,Huiquing Zeng,Isabel Novoa,Phoebe D. Lu,Marcella Calfon,Navid Sadri,Chi Yun,Brian Popko,Richard S. Paules,David F. Stojdl,John C. Bell,Thore Hettmann,Jeffrey M. Leiden,David Ron +14 more
TL;DR: A signaling pathway initiated by eIF2alpha phosphorylation protects cells against metabolic consequences of ER oxidation by promoting the linked processes of amino acid sufficiency and resistance to oxidative stress.
Journal ArticleDOI
An essential role for Scurfin in CD4+CD25+ T regulatory cells.
TL;DR: It is shown that Foxp3 is highly expressed by TR cells and is associated with TR cell activity and phenotype, indicating that the Scurfin and CTLA-4 pathways may intersect and providing further insight into the TR cell lineage.