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Canter RJ, Judge SJ, Collins CP, Yoon DJ, Murphy WJ. Suppressive effects of obesity on NK cells: is it time to incorporate obesity as a clinical variable for NK cell-based cancer immunotherapy regimens? J Immunother Cancer 2024; 12:e008443. [PMID: 38485185 PMCID: PMC10941146 DOI: 10.1136/jitc-2023-008443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/16/2024] [Indexed: 03/17/2024] Open
Abstract
Abstract
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Affiliation(s)
| | - Sean J Judge
- Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Craig P Collins
- Dermatology, University of California Davis, Davis, California, USA
| | | | - William J Murphy
- Dermatology, University of California Davis, Davis, California, USA
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Collins CP, Longo DL, Murphy WJ. The immunobiology of SARS-CoV-2 infection and vaccine responses: potential influences of cross-reactive memory responses and aging on efficacy and off-target effects. Front Immunol 2024; 15:1345499. [PMID: 38469293 PMCID: PMC10925677 DOI: 10.3389/fimmu.2024.1345499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Accepted: 02/12/2024] [Indexed: 03/13/2024] Open
Abstract
Immune responses to both SARS-CoV-2 infection and its associated vaccines have been highly variable within the general population. The increasing evidence of long-lasting symptoms after resolution of infection, called post-acute sequelae of COVID-19 (PASC) or "Long COVID," suggests that immune-mediated mechanisms are at play. Closely related endemic common human coronaviruses (hCoV) can induce pre-existing and potentially cross-reactive immunity, which can then affect primary SARS-CoV-2 infection, as well as vaccination responses. The influence of pre-existing immunity from these hCoVs, as well as responses generated from original CoV2 strains or vaccines on the development of new high-affinity responses to CoV2 antigenic viral variants, needs to be better understood given the need for continuous vaccine adaptation and application in the population. Due in part to thymic involution, normal aging is associated with reduced naïve T cell compartments and impaired primary antigen responsiveness, resulting in a reliance on the pre-existing cross-reactive memory cell pool which may be of lower affinity, restricted in diversity, or of shorter duration. These effects can also be mediated by the presence of down-regulatory anti-idiotype responses which also increase in aging. Given the tremendous heterogeneity of clinical data, utilization of preclinical models offers the greatest ability to assess immune responses under a controlled setting. These models should now involve prior antigen/viral exposure combined with incorporation of modifying factors such as age on immune responses and effects. This will also allow for mechanistic dissection and understanding of the different immune pathways involved in both SARS-CoV-2 pathogen and potential vaccine responses over time and how pre-existing memory responses, including potential anti-idiotype responses, can affect efficacy as well as potential off-target effects in different tissues as well as modeling PASC.
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Affiliation(s)
- Craig P. Collins
- Graduate Program in Immunology, University of California (UC) Davis, Davis, CA, United States
| | - Dan L. Longo
- Harvard Medical School, Brigham and Women’s Hospital, Boston, MA, United States
| | - William J. Murphy
- Departments of Dermatology and Internal Medicine (Hematology/Oncology), University of California (UC) Davis School of Medicine, Sacramento, CA, United States
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Murphy WJ, Collins CP, Ashwood P. Potential role of anti-Idiotype responses on the neurological effects of post-acute sequelae of COVID-19 (PASC). Brain Behav Immun 2024; 116:317-320. [PMID: 38123027 DOI: 10.1016/j.bbi.2023.12.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 12/06/2023] [Accepted: 12/08/2023] [Indexed: 12/23/2023] Open
Affiliation(s)
- William J Murphy
- Departments of Dermatology and Internal Medicine (Hematology/Oncology), UC Davis School of Medicine, Sacramento, CA, United States.
| | - Craig P Collins
- Graduate Program in Immunology, UC Davis, Davis, CA, United States
| | - Paul Ashwood
- Department of Medical Microbiology and Immunology, MIND Institute, UC Davis, Sacramento, CA, United States
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Vick LV, Collins CP, Khuat LT, Wang Z, Dunai C, Aguilar EG, Stoffel K, Yendamuri S, Smith R, Mukherjee S, Barbi J, Canter RJ, Monjazeb AM, Murphy WJ. Aging augments obesity-induced thymic involution and peripheral T cell exhaustion altering the "obesity paradox". Front Immunol 2023; 13:1012016. [PMID: 36776393 PMCID: PMC9910174 DOI: 10.3389/fimmu.2022.1012016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Accepted: 12/07/2022] [Indexed: 01/28/2023] Open
Abstract
Introduction The incidence of obesity, a condition characterized by systemic chronic inflammation, has reached pandemic proportions and is a poor prognostic factor in many pathologic states. However, its role on immune parameters has been diverse and at times contradictory. We have previously demonstrated that obesity can result in what has been called the "obesity paradox" which results in increased T cell exhaustion, but also greater efficacy of immune checkpoint blockade in cancer treatment. Methods The role of obesity, particularly in the context of aging, has not been robustly explored using preclinical models. We therefore evaluated how age impacts the immune environment on T cell development and function using diet-induced obese (DIO) mice. Results We observed that DIO mice initially displayed greater thymopoiesis but then developed greater thymic involution over time compared to their lean counterparts. Both aging and obesity resulted in increased T cell memory conversion combined with increased expression of T cell exhaustion markers and Treg expansion. This increased T cell immunosuppression with age then resulted in a loss of anti-tumor efficacy by immune checkpoint inhibitors (ICIs) in older DIO mice compared to the younger DIO counterparts. Discussion These results suggest that both aging and obesity contribute to T cell dysfunction resulting in increased thymic involution. This combined with increased T cell exhaustion and immunosuppressive parameters affects immunotherapy efficacy reducing the advantage of obesity in cancer immunotherapy responses.
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Affiliation(s)
- Logan V. Vick
- Department of Dermatology, University of California Davis School of Medicine, Sacramento, CA, United States
| | - Craig P. Collins
- Department of Dermatology, University of California Davis School of Medicine, Sacramento, CA, United States
| | - Lam T. Khuat
- Department of Dermatology, University of California Davis School of Medicine, Sacramento, CA, United States
| | - Ziming Wang
- Department of Dermatology, University of California Davis School of Medicine, Sacramento, CA, United States
| | - Cordelia Dunai
- Department of Dermatology, University of California Davis School of Medicine, Sacramento, CA, United States
| | - Ethan G. Aguilar
- Department of Dermatology, University of California Davis School of Medicine, Sacramento, CA, United States
| | - Kevin Stoffel
- Department of Dermatology, University of California Davis School of Medicine, Sacramento, CA, United States
| | - Sai Yendamuri
- Department of Thoracic Surgery, Roswell Park Comprehensive Cancer Center, Buffalo, NY, United States
| | - Randall Smith
- Department of Immunology Roswell Park Comprehensive Cancer Center, Buffalo, NY, United States
| | - Sarbajit Mukherjee
- Department of Medicine, Roswell Park Comprehensive Cancer Center, Buffalo, NY, United States
| | - Joseph Barbi
- Department of Thoracic Surgery, Roswell Park Comprehensive Cancer Center, Buffalo, NY, United States
- Department of Immunology Roswell Park Comprehensive Cancer Center, Buffalo, NY, United States
| | - Robert J. Canter
- Division of Surgical Oncology, Department of Surgery, University of California Davis Comprehensive Cancer Center, University of California Davis School of Medicine, Sacramento, CA, United States
| | - Arta M. Monjazeb
- Department of Radiation Oncology, University of California Davis Comprehensive Cancer Center, University of California School of Medicine, Sacramento, CA, United States
| | - William J. Murphy
- Department of Dermatology, University of California Davis School of Medicine, Sacramento, CA, United States
- Department of Internal Medicine, Division of Hematology and Oncology, University of California Davis School of Medicine, Sacramento, CA, United States
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Khuat LT, Vick LV, Dunai C, Collins CP, More SK, Le CT, Pai CCS, Stoffel KM, Maverakis E, Canter RJ, Monjazeb AM, Longo DL, Abedi M, Choi E, Blazar BR, Dave M, Murphy WJ. Increased efficacy of dual proinflammatory cytokine blockade on acute GVHD while maintaining GVT effects. Blood 2021; 138:2583-2588. [PMID: 34424962 PMCID: PMC8678998 DOI: 10.1182/blood.2021011216] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Accepted: 08/14/2021] [Indexed: 11/20/2022] Open
Abstract
Allogeneic hematopoietic stem cell transplantation (allo-HSCT) remains a potential curative option for treating a variety of hematologic diseases, but acute and chronic graft-versus-host disease (GVHD) remain major barriers limiting efficacy. Acute gut GVHD occurs with marked increases in proinflammatory cytokines (including TNF and IL-6), which we recently demonstrated was exacerbated in obesity resulting in severe gastrointestinal pathology. Given the pleiotropic and overlapping effects of these 2 cytokines, we assessed the impact of dual TNF and IL-6R blockade on GVHD as well as graft-versus tumor (GVT) effects in different mouse GVHD models. Early administration of combined blockade resulted in greater protection and survival from acute gut GVHD compared with single blockade regimens and even development of later chronic skin GVHD. Importantly, double cytokine blockade preserved GVT effects reinforcing that GVT and GVHD can be delineated and may result in greater efficacy in allo-HSCT.
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Affiliation(s)
| | | | | | | | - Shyam K More
- Division of Gastroenterology, Department of Internal Medicine
| | | | | | | | | | | | - Arta M Monjazeb
- Department of Radiation Oncology, School of Medicine, University of California, Davis, Sacramento, CA
| | - Dan L Longo
- Department of Medicine, Harvard Medical School, Boston, MA
| | - Mehrdad Abedi
- Department of Internal Medicine, School of Medicine, University of California, Davis, Sacramento, CA
| | - Eunju Choi
- Department of Pathology, Microbiology, and Immunology, University of California, Davis, Davis, CA; and
| | - Bruce R Blazar
- Masonic Cancer Center and Division of Blood and Marrow Transplantation and Cellular Therapy, Department of Pediatrics, University of Minnesota, Minneapolis, MN
| | - Maneesh Dave
- Division of Gastroenterology, Department of Internal Medicine
| | - William J Murphy
- Department of Dermatology
- Department of Internal Medicine, School of Medicine, University of California, Davis, Sacramento, CA
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