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Autophagy promotes growth of tumors with high mutational burden by inhibiting a T-cell immune response. ACTA ACUST UNITED AC 2020; 1:923-934. [PMID: 34476408 DOI: 10.1038/s43018-020-00110-7] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Macroautophagy (hereafter autophagy) degrades and recycles intracellular components to sustain metabolism and survival during starvation. Host autophagy promotes tumor growth by providing essential tumor nutrients. Autophagy also regulates immune cell homeostasis and function and suppresses inflammation. Although host autophagy does not promote a T-cell anti-tumor immune response in tumors with low tumor mutational burden (TMB), whether this was the case in tumors with high TMB was not known. Here we show that autophagy, especially in the liver, promotes tumor immune tolerance by enabling regulatory T-cell function and limiting stimulator of interferon genes, T-cell response and interferon-γ, which enables growth of high-TMB tumors. We have designated this as hepatic autophagy immune tolerance. Autophagy thereby promotes tumor growth through both metabolic and immune mechanisms depending on mutational load and autophagy inhibition is an effective means to promote an antitumor T-cell response in high-TMB tumors.
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Haanen J, Ernstoff MS, Wang Y, Menzies AM, Puzanov I, Grivas P, Larkin J, Peters S, Thompson JA, Obeid M. Autoimmune diseases and immune-checkpoint inhibitors for cancer therapy: review of the literature and personalized risk-based prevention strategy. Ann Oncol 2020; 31:724-744. [PMID: 32194150 DOI: 10.1016/j.annonc.2020.03.285] [Citation(s) in RCA: 116] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 03/03/2020] [Accepted: 03/07/2020] [Indexed: 02/08/2023] Open
Abstract
Patients with cancer and with preexisting active autoimmune diseases (ADs) have been excluded from immunotherapy clinical trials because of concerns for high susceptibility to the development of severe adverse events resulting from exacerbation of their preexisting ADs. However, a growing body of evidence indicates that immune-checkpoint inhibitors (ICIs) may be safe and effective in this patient population. However, baseline corticosteroids and other nonselective immunosuppressants appear to negatively impact drug efficacy, whereas retrospective and case report data suggest that use of specific immunosuppressants may not have the same consequences. Therefore, we propose here a two-step strategy. First, to lower the risk of compromising ICI efficacy before their initiation, nonselective immunosuppressants could be replaced by specific selective immunosuppressant drugs following a short rotation phase. Subsequently, combining ICI with the selective immunosuppressant could prevent exacerbation of the AD. For the most common active ADs encountered in the context of cancer, we propose specific algorithms to optimize ICI therapy. These preventive strategies go beyond current practices and recommendations, and should be practiced in ICI-specialized clinics, as these require multidisciplinary teams with extensive knowledge in the field of clinical immunology and oncology. In addition, we challenge the exclusion from ICI therapy for patients with cancer and active ADs and propose the implementation of an international registry to study such novel strategies in a prospective fashion.
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Affiliation(s)
- J Haanen
- Netherlands Cancer Institute, Division of Medical Oncology, Amsterdam, The Netherlands
| | - M S Ernstoff
- Roswell Park Comprehensive Cancer Center, Buffalo, USA
| | - Y Wang
- Department of Gastroenterology, Hepatology & Nutrition, University of Texas MD Anderson Cancer Center, Houston, USA
| | - A M Menzies
- Melanoma Institute Australia, The University of Sydney, Sydney, Australia; Royal North Shore and Mater Hospitals, Sydney, Australia
| | - I Puzanov
- Roswell Park Comprehensive Cancer Center, Buffalo, USA
| | - P Grivas
- University of Washington, Seattle Cancer Care Alliance, Fred Hutchinson Cancer Research Center, Seattle, USA
| | - J Larkin
- Royal Marsden NHS Foundation Trust, London, UK
| | - S Peters
- Oncology Department, Centre Hospitalier Universitaire Vaudois (CHUV) and Lausanne University, Lausanne, Switzerland
| | - J A Thompson
- University of Washington, Seattle Cancer Care Alliance, Fred Hutchinson Cancer Research Center, Seattle, USA; National Cancer Institute/NIH, Bethesda, USA
| | - M Obeid
- Department of Medicine, Service of Immunology and Allergy, Centre Hospitalier Universitaire Vaudois (CHUV), Lausanne, Switzerland; Vaccine and Immunotherapy Center, Centre Hospitalier Universitaire Vaudois (CHUV), Centre d'Immunothérapie et de Vaccinologie, Lausanne, Switzerland.
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