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Wang H, Yang H, Zhang X, Zhou X. Triptolide promotes differentiation of human monocytes into immunosuppressive MDSCs. Cell Immunol 2024; 401-402:104836. [PMID: 38776753 DOI: 10.1016/j.cellimm.2024.104836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 05/11/2024] [Accepted: 05/14/2024] [Indexed: 05/25/2024]
Abstract
BACKGROUND Myeloid-derived suppressor cells (MDSCs) negatively modulate immune activity. Prior investigations have shown much promise in using MDSCs-assisted immunotherapy for organ transplantation patients. Additionally, owing to its immunosuppressive activity, MDSCs can also be used to manage immune-associated disorders. METHODS Granulocyte-macrophage colony-stimulating factor (GM-CSF) was employed to stimulate myeloid progenitor cell differentiation. Triptolide (PG490) was introduced toward the later phases of in vitro MDSCs induction. Lastly, real-time PCR (RT-PCR) and flow cytometry were used to assess transcript expression and cell phenotype, and a mouse skin transplantation model was established to evaluate the MDSCs-mediated immune suppression in vivo. RESULTS Co-stimulation with PG490 and GM-CSF potently induced myeloid-derived monocytes to form MDSCs, with remarkable immune-suppressive activity. The underlying mechanism involved downregulation of T cell proliferation, activation, enhancement of inflammatory cytokine release, as well as T cell conversion to Treg cells. PG490 strongly enhanced iNOS expression in MDSCs, and iNOS inhibition successfully reversed the immune-suppression. The PG490- and GM-CSF-induced MDSCs substantially extended survival duration of murine skin grafts, thereby validating their strong immune-suppressive activity in vivo. CONCLUSIONS Herein, we presented a new approach involving MDSCs-based immunosuppression in vitro. PG490 and GM-CSF co-treatment strongly induced immuno-suppressive activity in MDSCs both in vitro and in vivo. Our findings highlight the promise of applying MDSCs-based therapy in clinical organ transplantation treatment.
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Affiliation(s)
- Haozhou Wang
- Department of Urology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Hui Yang
- Department of Pharmacy, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Xiaodong Zhang
- Department of Urology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Xiaoguang Zhou
- Department of Urology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China.
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2
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Koula G, Yakati V, Rachamalla HK, Bhamidipati K, Kathirvel M, Banerjee R, Puvvada N. Integrin receptor-targeted, doxorubicin-loaded cerium oxide nanoparticles delivery to combat glioblastoma. Nanomedicine (Lond) 2024:1-18. [PMID: 38912661 DOI: 10.1080/17435889.2024.2350357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Accepted: 04/29/2024] [Indexed: 06/25/2024] Open
Abstract
Aim: To assess the chemo-immunomodulatory effects of doxorubicin-loaded cerium oxide nanoparticles coated with oleyl amine-linked cyclic RGDfK peptide (CeNP+Dox+RGD) to target both gliomas and its tumor microenvironment (TME) via integrin receptors. Materials & methods: CeNP+Dox+RGD nanoparticles are synthesized by the sequential addition of cerium III chloride heptahydrate, beta-cyclodextrin, oleic acid, and F127 micelle (CeNP). Doxorubicin was then loaded into CeNPs and coated with oleyl amine-linked cyclic RGDfK peptide to form stable CeNP+Dox+RGD nanoparticles. Results: CeNP+Dox+RGD nanoparticles crossed blood-brain barrier (BBB) effectively and demonstrated threefold enhanced survivability in glioma-bearing mice. The IHC profiling of glial tumor cross-sections showed increased CD80 expression (M1 TAMs) and decreased arginase-1 expression (M2 TAMs). Conclusion: CeNP+Dox+RGD can be an immunotherapeutic treatment option to combat glioblastoma.
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Affiliation(s)
- Gayathri Koula
- Department of Oils, Lipids Sciences & Technology, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500007, India
- Academy of Scientific & Innovative Research (AcSIR), Ghaziabad, 201002, Uttar Pradesh (U.P), India
| | - Venu Yakati
- Department of Oils, Lipids Sciences & Technology, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500007, India
- Academy of Scientific & Innovative Research (AcSIR), Ghaziabad, 201002, Uttar Pradesh (U.P), India
| | - Hari Krishnareddy Rachamalla
- Department of Oils, Lipids Sciences & Technology, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500007, India
- Academy of Scientific & Innovative Research (AcSIR), Ghaziabad, 201002, Uttar Pradesh (U.P), India
| | - Keerti Bhamidipati
- Applied Biology Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500007, India
- Academy of Scientific & Innovative Research (AcSIR), Ghaziabad, 201002, Uttar Pradesh (U.P), India
| | - Muralidharan Kathirvel
- Applied Biology Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500007, India
| | - Rajkumar Banerjee
- Department of Oils, Lipids Sciences & Technology, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500007, India
| | - Nagaprasad Puvvada
- Department of Oils, Lipids Sciences & Technology, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500007, India
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3
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Toledo B, Zhu Chen L, Paniagua-Sancho M, Marchal JA, Perán M, Giovannetti E. Deciphering the performance of macrophages in tumour microenvironment: a call for precision immunotherapy. J Hematol Oncol 2024; 17:44. [PMID: 38863020 PMCID: PMC11167803 DOI: 10.1186/s13045-024-01559-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Accepted: 05/21/2024] [Indexed: 06/13/2024] Open
Abstract
Macrophages infiltrating tumour tissues or residing in the microenvironment of solid tumours are known as tumour-associated macrophages (TAMs). These specialized immune cells play crucial roles in tumour growth, angiogenesis, immune regulation, metastasis, and chemoresistance. TAMs encompass various subpopulations, primarily classified into M1 and M2 subtypes based on their differentiation and activities. M1 macrophages, characterized by a pro-inflammatory phenotype, exert anti-tumoural effects, while M2 macrophages, with an anti-inflammatory phenotype, function as protumoural regulators. These highly versatile cells respond to stimuli from tumour cells and other constituents within the tumour microenvironment (TME), such as growth factors, cytokines, chemokines, and enzymes. These stimuli induce their polarization towards one phenotype or another, leading to complex interactions with TME components and influencing both pro-tumour and anti-tumour processes.This review comprehensively and deeply covers the literature on macrophages, their origin and function as well as the intricate interplay between macrophages and the TME, influencing the dual nature of TAMs in promoting both pro- and anti-tumour processes. Moreover, the review delves into the primary pathways implicated in macrophage polarization, examining the diverse stimuli that regulate this process. These stimuli play a crucial role in shaping the phenotype and functions of macrophages. In addition, the advantages and limitations of current macrophage based clinical interventions are reviewed, including enhancing TAM phagocytosis, inducing TAM exhaustion, inhibiting TAM recruitment, and polarizing TAMs towards an M1-like phenotype. In conclusion, while the treatment strategies targeting macrophages in precision medicine show promise, overcoming several obstacles is still necessary to achieve an accessible and efficient immunotherapy.
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Affiliation(s)
- Belén Toledo
- Department of Health Sciences, University of Jaén, Campus Lagunillas, Jaén, E-23071, Spain
- Department of Medical Oncology, Cancer Center Amsterdam, Cancer Biology and Immunology, Amsterdam UMC, VU University, Amsterdam, The Netherlands
| | - Linrui Zhu Chen
- Department of Medical Oncology, Cancer Center Amsterdam, Cancer Biology and Immunology, Amsterdam UMC, VU University, Amsterdam, The Netherlands
| | - María Paniagua-Sancho
- Biopathology and Regenerative Medicine Institute (IBIMER), Centre for Biomedical Research (CIBM), University of Granada, Granada, E-18100, Spain
- Instituto de Investigación Sanitaria ibs. GRANADA, Hospitales Universitarios de Granada-Universidad de Granada, Granada, E-18071, Spain
- Department of Human Anatomy and Embryology, Faculty of Medicine, University of Granada, Granada, E-18016, Spain
- Excellence Research Unit "Modeling Nature" (MNat), University of Granada, Granada, E-18016, Spain
| | - Juan Antonio Marchal
- Biopathology and Regenerative Medicine Institute (IBIMER), Centre for Biomedical Research (CIBM), University of Granada, Granada, E-18100, Spain
- Instituto de Investigación Sanitaria ibs. GRANADA, Hospitales Universitarios de Granada-Universidad de Granada, Granada, E-18071, Spain
- Department of Human Anatomy and Embryology, Faculty of Medicine, University of Granada, Granada, E-18016, Spain
- Excellence Research Unit "Modeling Nature" (MNat), University of Granada, Granada, E-18016, Spain
| | - Macarena Perán
- Department of Health Sciences, University of Jaén, Campus Lagunillas, Jaén, E-23071, Spain.
- Biopathology and Regenerative Medicine Institute (IBIMER), Centre for Biomedical Research (CIBM), University of Granada, Granada, E-18100, Spain.
- Excellence Research Unit "Modeling Nature" (MNat), University of Granada, Granada, E-18016, Spain.
| | - Elisa Giovannetti
- Department of Medical Oncology, Cancer Center Amsterdam, Cancer Biology and Immunology, Amsterdam UMC, VU University, Amsterdam, The Netherlands.
- Cancer Pharmacology Lab, Fondazione Pisana per la Scienza, San Giuliano, Pisa, 56017, Italy.
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4
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Montoya M, Gallus M, Phyu S, Haegelin J, de Groot J, Okada H. A Roadmap of CAR-T-Cell Therapy in Glioblastoma: Challenges and Future Perspectives. Cells 2024; 13:726. [PMID: 38727262 PMCID: PMC11083543 DOI: 10.3390/cells13090726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Revised: 04/20/2024] [Accepted: 04/20/2024] [Indexed: 05/13/2024] Open
Abstract
Glioblastoma (GBM) is the most common primary malignant brain tumor, with a median overall survival of less than 2 years and a nearly 100% mortality rate under standard therapy that consists of surgery followed by combined radiochemotherapy. Therefore, new therapeutic strategies are urgently needed. The success of chimeric antigen receptor (CAR) T cells in hematological cancers has prompted preclinical and clinical investigations into CAR-T-cell treatment for GBM. However, recent trials have not demonstrated any major success. Here, we delineate existing challenges impeding the effectiveness of CAR-T-cell therapy for GBM, encompassing the cold (immunosuppressive) microenvironment, tumor heterogeneity, T-cell exhaustion, local and systemic immunosuppression, and the immune privilege inherent to the central nervous system (CNS) parenchyma. Additionally, we deliberate on the progress made in developing next-generation CAR-T cells and novel innovative approaches, such as low-intensity pulsed focused ultrasound, aimed at surmounting current roadblocks in GBM CAR-T-cell therapy.
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Affiliation(s)
- Megan Montoya
- Department of Neurological Surgery, University of California San Francisco, San Francisco, CA 94143, USA
- Helen Diller Family Comprehensive Cancer Center, San Francisco, CA 94158, USA
| | - Marco Gallus
- Department of Neurological Surgery, University of California San Francisco, San Francisco, CA 94143, USA
- Helen Diller Family Comprehensive Cancer Center, San Francisco, CA 94158, USA
| | - Su Phyu
- Department of Neurological Surgery, University of California San Francisco, San Francisco, CA 94143, USA
- Helen Diller Family Comprehensive Cancer Center, San Francisco, CA 94158, USA
| | - Jeffrey Haegelin
- Department of Neurological Surgery, University of California San Francisco, San Francisco, CA 94143, USA
- Helen Diller Family Comprehensive Cancer Center, San Francisco, CA 94158, USA
| | - John de Groot
- Department of Neurological Surgery, University of California San Francisco, San Francisco, CA 94143, USA
- Helen Diller Family Comprehensive Cancer Center, San Francisco, CA 94158, USA
| | - Hideho Okada
- Department of Neurological Surgery, University of California San Francisco, San Francisco, CA 94143, USA
- Helen Diller Family Comprehensive Cancer Center, San Francisco, CA 94158, USA
- Parker Institute for Cancer Immunotherapy, San Francisco, CA 94129, USA
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5
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Fay M, Clavijo PE, Allen CT. Heterogeneous characterization of neutrophilic cells in head and neck cancers. Head Neck 2024. [PMID: 38622975 DOI: 10.1002/hed.27774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 03/14/2024] [Accepted: 04/07/2024] [Indexed: 04/17/2024] Open
Abstract
BACKGROUND Neutrophilic cells are among the most abundant immune populations within the head and neck tumor microenvironment (TME) and harbor multiple mechanisms of immunosuppression. Despite these important features, neutrophilic cells may be underrepresented in contemporary studies that aim to comprehensively characterize the immune landscape of the TME due to discrepancies in tissue processing and analysis techniques. Here, we review the role of pathologically activated neutrophilic cells within the TME and pitfalls of various approaches used to study their frequency and function in clinical samples. METHODS The literature was identified by searching PubMed for "immune landscape" and "tumor immune microenvironment" in combination with keywords describing solid tumor malignancies. Key publications that assessed the immune composition of solid tumors derived from human specimens were included. The tumor and blood processing methodologies in each study were reviewed in depth and correlated with the reported abundance of neutrophilic cells. RESULTS Neutrophilic cells do not survive cryopreservation, and many studies fail to identify and study neutrophilic cell populations due to cryopreservation of clinical samples for practical reasons. Additional single-cell transcriptomic studies filter out neutrophilic cells due to low transcriptional counts. CONCLUSIONS This report can help readers critically interpret studies aiming to comprehensively study the immune TME that fail to identify and characterize neutrophilic cells.
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Affiliation(s)
- Magdalena Fay
- Surgical Oncology Program, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Paul E Clavijo
- Surgical Oncology Program, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Clint T Allen
- Surgical Oncology Program, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
- Center for Immuno-Oncology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
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6
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Lu J, Luo Y, Rao D, Wang T, Lei Z, Chen X, Zhang B, Li Y, Liu B, Xia L, Huang W. Myeloid-derived suppressor cells in cancer: therapeutic targets to overcome tumor immune evasion. Exp Hematol Oncol 2024; 13:39. [PMID: 38609997 PMCID: PMC11010322 DOI: 10.1186/s40164-024-00505-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2024] [Accepted: 03/31/2024] [Indexed: 04/14/2024] Open
Abstract
Paradoxically, tumor development and progression can be inhibited and promoted by the immune system. After three stages of immune editing, namely, elimination, homeostasis and escape, tumor cells are no longer restricted by immune surveillance and thus develop into clinical tumors. The mechanisms of immune escape include abnormalities in antitumor-associated immune cells, selection for immune resistance to tumor cells, impaired transport of T cells, and the formation of an immunosuppressive tumor microenvironment. A population of distinct immature myeloid cells, myeloid-derived suppressor cells (MDSCs), mediate immune escape primarily by exerting immunosuppressive effects and participating in the constitution of an immunosuppressive microtumor environment. Clinical trials have found that the levels of MDSCs in the peripheral blood of cancer patients are strongly correlated with tumor stage, metastasis and prognosis. Moreover, animal experiments have confirmed that elimination of MDSCs inhibits tumor growth and metastasis to some extent. Therefore, MDSCs may become the target of immunotherapy for many cancers, and eliminating MDSCs can help improve the response rate to cancer treatment and patient survival. However, a clear definition of MDSCs and the specific mechanism involved in immune escape are lacking. In this paper, we review the role of the MDSCs population in tumor development and the mechanisms involved in immune escape in different tumor contexts. In addition, we discuss the use of these cells as targets for tumor immunotherapy. This review not only contributes to a systematic and comprehensive understanding of the essential role of MDSCs in immune system reactions against tumors but also provides information to guide the development of cancer therapies targeting MDSCs.
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Affiliation(s)
- Junli Lu
- Hepatic Surgery Centre, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Wuhan, 430030, Hubei, China
| | - Yiming Luo
- Hepatic Surgery Centre, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Wuhan, 430030, Hubei, China
| | - Dean Rao
- Hepatic Surgery Centre, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Wuhan, 430030, Hubei, China
| | - Tiantian Wang
- Hepatic Surgery Centre, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Wuhan, 430030, Hubei, China
| | - Zhen Lei
- Hepatic Surgery Centre, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Wuhan, 430030, Hubei, China
| | - Xiaoping Chen
- Hepatic Surgery Centre, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Wuhan, 430030, Hubei, China
- Clinical Medicine Research Center for Hepatic Surgery of Hubei Province, Key Laboratory of Organ Transplantation, Ministry of Education and Ministry of Public Health, Wuhan, 430030, Hubei, China
| | - Bixiang Zhang
- Hepatic Surgery Centre, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Wuhan, 430030, Hubei, China
- Clinical Medicine Research Center for Hepatic Surgery of Hubei Province, Key Laboratory of Organ Transplantation, Ministry of Education and Ministry of Public Health, Wuhan, 430030, Hubei, China
| | - Yiwei Li
- The Key Laboratory for Biomedical Photonics of MOE at Wuhan National Laboratory for Optoelectronics-Hubei Bioinformatics and Molecular Imaging Key Laboratory, Systems Biology Theme, Department of Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Bifeng Liu
- The Key Laboratory for Biomedical Photonics of MOE at Wuhan National Laboratory for Optoelectronics-Hubei Bioinformatics and Molecular Imaging Key Laboratory, Systems Biology Theme, Department of Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Limin Xia
- Department of Gastroenterology, Institute of Liver and Gastrointestinal Diseases, Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China.
| | - Wenjie Huang
- Hepatic Surgery Centre, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Wuhan, 430030, Hubei, China.
- Clinical Medicine Research Center for Hepatic Surgery of Hubei Province, Key Laboratory of Organ Transplantation, Ministry of Education and Ministry of Public Health, Wuhan, 430030, Hubei, China.
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7
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Yang EL, Sun ZJ. Nanomedicine Targeting Myeloid-Derived Suppressor Cells Enhances Anti-Tumor Immunity. Adv Healthc Mater 2024; 13:e2303294. [PMID: 38288864 DOI: 10.1002/adhm.202303294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 11/27/2023] [Indexed: 02/13/2024]
Abstract
Cancer immunotherapy, a field within immunology that aims to enhance the host's anti-cancer immune response, frequently encounters challenges associated with suboptimal response rates. The presence of myeloid-derived suppressor cells (MDSCs), crucial constituents of the tumor microenvironment (TME), exacerbates this issue by fostering immunosuppression and impeding T cell differentiation and maturation. Consequently, targeting MDSCs has emerged as crucial for immunotherapy aimed at enhancing anti-tumor responses. The development of nanomedicines specifically designed to target MDSCs aims to improve the effectiveness of immunotherapy by transforming immunosuppressive tumors into ones more responsive to immune intervention. This review provides a detailed overview of MDSCs in the TME and current strategies targeting these cells. Also the benefits of nanoparticle-assisted drug delivery systems, including design flexibility, efficient drug loading, and protection against enzymatic degradation, are highlighted. It summarizes advances in nanomedicine targeting MDSCs, covering enhanced treatment efficacy, safety, and modulation of the TME, laying the groundwork for more potent cancer immunotherapy.
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Affiliation(s)
- En-Li Yang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Frontier Science Center for Immunology and Metabolism, Wuhan University, Wuhan, Hubei, 430079, China
| | - Zhi-Jun Sun
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Frontier Science Center for Immunology and Metabolism, Wuhan University, Wuhan, Hubei, 430079, China
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8
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Jou E, Chaudhury N, Nasim F. Novel therapeutic strategies targeting myeloid-derived suppressor cell immunosuppressive mechanisms for cancer treatment. EXPLORATION OF TARGETED ANTI-TUMOR THERAPY 2024; 5:187-207. [PMID: 38464388 PMCID: PMC10918238 DOI: 10.37349/etat.2024.00212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Accepted: 12/10/2023] [Indexed: 03/12/2024] Open
Abstract
Cancer is the leading cause of death globally superseded only by cardiovascular diseases, and novel strategies to overcome therapeutic resistance against existing cancer treatments are urgently required. Myeloid-derived suppressor cells (MDSCs) are immature myeloid cells with potent immunosuppressive capacity against well-established anti-tumour effectors such as natural killer cells (NK cells) and T cells thereby promoting cancer initiation and progression. Critically, MDSCs are readily identified in almost all tumour types and human cancer patients, and numerous studies in the past decade have recognised their role in contributing to therapeutic resistance against all four pillars of modern cancer treatment, namely surgery, chemotherapy, radiotherapy and immunotherapy. MDSCs suppress anti-tumour immunity through a plethora of mechanisms including the well-characterised arginase 1 (Arg1), inducible nitric oxide synthase (iNOS) and reactive oxygen species (ROS)-mediated pathways, along with several other more recently discovered. MDSCs are largely absent in healthy homeostatic states and predominantly exist in pathological conditions, making them attractive therapeutic targets. However, the lack of specific markers identified for MDSCs to date greatly hindered therapeutic development, and currently there are no clinically approved drugs that specifically target MDSCs. Methods to deplete MDSCs clinically and inhibit their immunosuppressive function will be crucial in advancing cancer treatment and to overcome treatment resistance. This review provides a detailed overview of the current understandings behind the mechanisms of MDSC-mediated suppression of anti-tumour immunity, and discusses potential strategies to target MDSC immunosuppressive mechanisms to overcome therapeutic resistance.
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Affiliation(s)
- Eric Jou
- Medical Sciences Division, Oxford University Hospitals, University of Oxford, OX3 9DU Oxford, UK
- Kellogg College, University of Oxford, OX2 6PN Oxford, UK
- Wexham Park Hospital, Frimley Health NHS Foundation Trust, SL2 4HL Slough, UK
| | - Natasha Chaudhury
- Wexham Park Hospital, Frimley Health NHS Foundation Trust, SL2 4HL Slough, UK
| | - Fizza Nasim
- Wexham Park Hospital, Frimley Health NHS Foundation Trust, SL2 4HL Slough, UK
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9
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Glöckner HJ, Martinenaite E, Landkildehus Lisle T, Grauslund J, Ahmad S, Met Ö, Thor Straten P, Hald Andersen M. Arginase-1 specific CD8+ T cells react toward malignant and regulatory myeloid cells. Oncoimmunology 2024; 13:2318053. [PMID: 38404966 PMCID: PMC10885169 DOI: 10.1080/2162402x.2024.2318053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Accepted: 02/08/2024] [Indexed: 02/27/2024] Open
Abstract
Arginase-1 (Arg1) is expressed by regulatory myeloid cells in the tumor microenvironment (TME), where they play a pro-tumorigenic and T-cell suppressive role. Arg1-specific CD4+ and CD8+ memory T cells have been observed in both healthy individuals and cancer patients. However, while the function of anti-regulatory Arg1-specific CD4+ T cells has been characterized, our knowledge of CD8+ Arg1-specific T cells is only scarce. In the current study, we describe the immune-modulatory capabilities of CD8+ Arg1-specific T cells. We generated CD8+ Arg1-specific T cell clones to target Arg1-expressing myeloid cells. Our results demonstrate that these T cells recognize both malignant and nonmalignant regulatory myeloid cells in an Arg1-expression-dependent manner. Notably, Arg1-specific CD8+ T cells possess cytolytic effector capabilities. Immune modulatory vaccines (IMVs) represent a novel treatment modality for cancer. The activation of Arg1-specific CD8+ T cells through Arg1-based IMVs can contribute to the modulatory effects of this treatment strategy.
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Affiliation(s)
- Hannah Jorinde Glöckner
- National Center for Cancer Immune Therapy, CCIT-DK, Department of Oncology, Copenhagen University Hospital, Herlev, Denmark
| | - Evelina Martinenaite
- National Center for Cancer Immune Therapy, CCIT-DK, Department of Oncology, Copenhagen University Hospital, Herlev, Denmark
- IO Biotech, Research and Development Department, Copenhagen, Denmark
| | - Thomas Landkildehus Lisle
- National Center for Cancer Immune Therapy, CCIT-DK, Department of Oncology, Copenhagen University Hospital, Herlev, Denmark
| | - Jacob Grauslund
- National Center for Cancer Immune Therapy, CCIT-DK, Department of Oncology, Copenhagen University Hospital, Herlev, Denmark
| | - Shamaila Ahmad
- National Center for Cancer Immune Therapy, CCIT-DK, Department of Oncology, Copenhagen University Hospital, Herlev, Denmark
| | - Özcan Met
- National Center for Cancer Immune Therapy, CCIT-DK, Department of Oncology, Copenhagen University Hospital, Herlev, Denmark
- Department of Health Technology, Technical University of Denmark, Lyngby, Denmark
| | - Per Thor Straten
- National Center for Cancer Immune Therapy, CCIT-DK, Department of Oncology, Copenhagen University Hospital, Herlev, Denmark
| | - Mads Hald Andersen
- National Center for Cancer Immune Therapy, CCIT-DK, Department of Oncology, Copenhagen University Hospital, Herlev, Denmark
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10
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Kostecki KL, Iida M, Crossman BE, Salgia R, Harari PM, Bruce JY, Wheeler DL. Immune Escape Strategies in Head and Neck Cancer: Evade, Resist, Inhibit, Recruit. Cancers (Basel) 2024; 16:312. [PMID: 38254801 PMCID: PMC10814769 DOI: 10.3390/cancers16020312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 01/08/2024] [Accepted: 01/09/2024] [Indexed: 01/24/2024] Open
Abstract
Head and neck cancers (HNCs) arise from the mucosal lining of the aerodigestive tract and are often associated with alcohol use, tobacco use, and/or human papillomavirus (HPV) infection. Over 600,000 new cases of HNC are diagnosed each year, making it the sixth most common cancer worldwide. Historically, treatments have included surgery, radiation, and chemotherapy, and while these treatments are still the backbone of current therapy, several immunotherapies have recently been approved by the Food and Drug Administration (FDA) for use in HNC. The role of the immune system in tumorigenesis and cancer progression has been explored since the early 20th century, eventually coalescing into the current three-phase model of cancer immunoediting. During each of the three phases-elimination, equilibrium, and escape-cancer cells develop and utilize multiple strategies to either reach or remain in the final phase, escape, at which point the tumor is able to grow and metastasize with little to no detrimental interference from the immune system. In this review, we summarize the many strategies used by HNC to escape the immune system, which include ways to evade immune detection, resist immune cell attacks, inhibit immune cell functions, and recruit pro-tumor immune cells.
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Affiliation(s)
- Kourtney L. Kostecki
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, Madison, WI 53792, USA; (K.L.K.); (M.I.); (B.E.C.)
| | - Mari Iida
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, Madison, WI 53792, USA; (K.L.K.); (M.I.); (B.E.C.)
| | - Bridget E. Crossman
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, Madison, WI 53792, USA; (K.L.K.); (M.I.); (B.E.C.)
| | - Ravi Salgia
- Department of Medical Oncology and Experimental Therapeutics, Comprehensive Cancer Center, City of Hope, Duarte, CA 91010, USA;
| | - Paul M. Harari
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, Madison, WI 53792, USA; (K.L.K.); (M.I.); (B.E.C.)
- University of Wisconsin Carbone Cancer Center, Madison, WI 53705, USA;
| | - Justine Y. Bruce
- University of Wisconsin Carbone Cancer Center, Madison, WI 53705, USA;
- Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI 53705, USA
| | - Deric L. Wheeler
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, Madison, WI 53792, USA; (K.L.K.); (M.I.); (B.E.C.)
- University of Wisconsin Carbone Cancer Center, Madison, WI 53705, USA;
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11
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Blanc-Durand F, Clemence Wei Xian L, Tan DSP. Targeting the immune microenvironment for ovarian cancer therapy. Front Immunol 2023; 14:1328651. [PMID: 38164130 PMCID: PMC10757966 DOI: 10.3389/fimmu.2023.1328651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 12/05/2023] [Indexed: 01/03/2024] Open
Abstract
Ovarian cancer (OC) is an aggressive malignancy characterized by a complex immunosuppressive tumor microenvironment (TME). Immune checkpoint inhibitors have emerged as a breakthrough in cancer therapy by reactivating the antitumor immune response suppressed by tumor cells. However, in the case of OC, these inhibitors have failed to demonstrate significant improvements in patient outcomes, and existing biomarkers have not yet identified promising subgroups. Consequently, there remains a pressing need to understand the interplay between OC tumor cells and their surrounding microenvironment to develop effective immunotherapeutic approaches. This review aims to provide an overview of the OC TME and explore its potential as a therapeutic strategy. Tumor-infiltrating lymphocytes (TILs) are major actors in OC TME. Evidence has been accumulating regarding the spontaneous TILS response against OC antigens. Activated T-helpers secrete a wide range of inflammatory cytokines with a supportive action on cytotoxic T-cells. Simultaneously, mature B-cells are recruited and play a significant antitumor role through opsonization of target antigens and T-cell recruitment. Macrophages also form an important subset of innate immunity (M1-macrophages) while participating in the immune-stimulation context. Finally, OC has shown to engage a significant natural-killer-cells immune response, exerting direct cytotoxicity without prior sensitization. Despite this initial cytotoxicity, OC cells develop various strategies to induce an immune-tolerant state. To this end, multiple immunosuppressive molecules are secreted to impair cytotoxic cells, recruit regulatory cells, alter antigen presentation, and effectively evade immune response. Consequently, OC TME is predominantly infiltrated by immunosuppressive cells such as FOXP3+ regulatory T-cells, M2-polarized macrophages and myeloid-derived suppressor cells. Despite this strong immunosuppressive state, PD-1/PD-L1 inhibitors have failed to improve outcomes. Beyond PD-1/PD-L1, OC expresses multiple other immune checkpoints that contribute to immune evasion, and each representing potential immune targets. Novel immunotherapies are attempting to overcome the immunosuppressive state and induce specific immune responses using antibodies adoptive cell therapy or vaccines. Overall, the OC TME presents both opportunities and obstacles. Immunotherapeutic approaches continue to show promise, and next-generation inhibitors offer exciting opportunities. However, tailoring therapies to individual immune characteristics will be critical for the success of these treatments.
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Affiliation(s)
- Felix Blanc-Durand
- Department of Haematology-Oncology, National University Cancer Institute, Singapore (NCIS), National University Hospital, Singapore, Singapore
- Yong Loo Lin School of Medicine and Cancer Science Institute (CSI), National University of Singapore (NUS), Singapore, Singapore
| | - Lai Clemence Wei Xian
- Department of Haematology-Oncology, National University Cancer Institute, Singapore (NCIS), National University Hospital, Singapore, Singapore
- Yong Loo Lin School of Medicine and Cancer Science Institute (CSI), National University of Singapore (NUS), Singapore, Singapore
| | - David S. P. Tan
- Department of Haematology-Oncology, National University Cancer Institute, Singapore (NCIS), National University Hospital, Singapore, Singapore
- Yong Loo Lin School of Medicine, National University Centre for Cancer Research (N2CR) and Cancer Science Institute (CSI), National University of Singapore, Singapore, Singapore
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12
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Mengrelis K, Muckenhuber M, Wekerle T. Chimerism-based Tolerance Induction in Clinical Transplantation: Its Foundations and Mechanisms. Transplantation 2023; 107:2473-2485. [PMID: 37046378 DOI: 10.1097/tp.0000000000004589] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/14/2023]
Abstract
Hematopoietic chimerism remains the most promising strategy to bring transplantation tolerance into clinical routine. The concept of chimerism-based tolerance aims to extend the recipient's mechanisms of self-tolerance (ie, clonal deletion, anergy, and regulation) to include the tolerization of donor antigens that are introduced through the cotransplantation of donor hematopoietic cells. For this to be successful, donor hematopoietic cells need to engraft in the recipient at least temporarily. Three pioneering clinical trials inducing chimerism-based tolerance in kidney transplantation have been published to date. Within this review, we discuss the mechanisms of tolerance that are associated with the specific therapeutic protocols of each trial. Recent data highlight the importance of regulation as a mechanism that maintains tolerance. Insufficient regulatory mechanisms are also a likely explanation for situations of tolerance failure despite persisting donor chimerism. After decades of preclinical development of chimerism protocols, mechanistic data from clinical trials have recently become increasingly important. Better understanding of the required mechanisms for tolerance to be induced in humans will be a key to design more reliable and less invasive chimerism protocols in the future.
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Affiliation(s)
- Konstantinos Mengrelis
- Division of Transplantation, Department of General Surgery, Medical University of Vienna, Vienna, Austria
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13
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Fraternale A, Green KA, Schiavano GF, Bruschi M, Retini M, Magnani M, Green WR. Inhibition of myeloid-derived suppressor cell (MDSC) activity by redox-modulating agents restores T and B cell proliferative responses in murine AIDS. Int Immunopharmacol 2023; 124:110882. [PMID: 37659111 DOI: 10.1016/j.intimp.2023.110882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 08/28/2023] [Accepted: 08/28/2023] [Indexed: 09/04/2023]
Abstract
The mechanisms by which myeloid-derived suppressor cells (MDSCs) mediate inhibition prominently include the production of reactive nitrogen species, in particular those generated by inducible nitric oxide synthase (iNOS), and reactive oxygen species. LP-BM5 murine retroviral infection results in a profound immunodeficiency, known as murine AIDS, as well as in increased numbers and activity of monocytic-type MDSCs (M-MDSCs) that suppress both T and B cell responses. While M-MDSCs suppress T cells ex vivo in a fully iNOS/NO-dependent manner, M-MDSC suppression of B cell responses is only partially due to iNOS/NO. This study preliminarily explored the role of two redox-modulating compounds in inhibiting the M-MDSC suppressive activity in LP-BM5 infection. The tested molecules were: I-152 consisting in a conjugate of N-acetyl-cysteine (NAC) and S-acetyl-cysteamine (SMEA) and C4-GSH that is the n-butanoyl glutathione (GSH) derivative. The results show that both molecules, tested in a concentration range between 3 and 20 mM, blocked the M-MDSC suppression of activated B and T cells ex vivo and restored their proliferative capacity in vivo. Ex vivo I-152 blockade of M-MDSC suppressiveness was more significant for T cell (about 70%) while M-MDSC blockade by C4-GSH was preferential for B cell responsiveness (about 60%), which was also confirmed by in vivo investigation. Beyond insights into redox-dependent suppressive effector mechanism(s) of M-MDSCs in LP-BM5 infection, these findings may ultimately be important to identify new immunotherapeutics against infectious diseases.
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Affiliation(s)
- Alessandra Fraternale
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, PU, Italy.
| | - Kathy A Green
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, NH, United States
| | | | - Michela Bruschi
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, PU, Italy
| | - Michele Retini
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, PU, Italy
| | - Mauro Magnani
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, PU, Italy
| | - William R Green
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, NH, United States
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14
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Lee YS, Cheng IT, Raquel GR, Weber DJ, Scalea JR. Initial exploration of a novel fusion protein, IL-4/IL-34/IL-10, which promotes cardiac allograft survival mice through alloregulation. Innate Immun 2023; 29:150-158. [PMID: 37800911 PMCID: PMC10559875 DOI: 10.1177/17534259231186239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 05/24/2023] [Accepted: 06/14/2023] [Indexed: 10/07/2023] Open
Abstract
Immune mediated graft loss still represents a major risk to transplant recipients. Creative approaches to immunosuppression that exploit the recipient's own alloregulatory mechanisms could reduce the need for pharmacologic immunosuppression and potentially induce immune tolerance. In the process of studying recipient derived myeloid derived suppressor cells (MDSCs), we identified key alloregulatory MDSC mechanisms, mediated by isolatable proteins IL-4, IL-34, and IL-10. We sought to purify these proteins and fuse them for subsequent infusion into transplant recipients as a means of inducing an alloregulatory response. In this introductory investigation, we leveraged molecular engineering technology to create a fusion protein (FP) of three cytokine coding sequences of IL-4, IL-34, and IL-10 and demonstrated their expressions by Western Blot analysis. Following purification, we tested whether FP IL-4/IL-34/IL-10 (FP1) can protect heart transplant allografts. Injection of FP1 significantly prolonged allogeneic cardiac graft survival in a dose-dependent fashion and the increase of graft survival time exceeded survival attributable to IL-34 alone. In vitro, MDSCs cells were expanded by FP1 treatment. However, FP1 did not directly inhibit T cell proliferation in vitro. In conclusion, newly developed FP1 improves the graft survival in cardiac transplantation mouse model. Significant additional work to optimize FP1 or include other novel proteins could supplement current treatment options for transplant patients.
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Affiliation(s)
- Young S. Lee
- Department of Surgery, University of Maryland School of Medicine, Baltimore, USA
- Center for Vascular and Inflammatory Diseases, University of Maryland School of Medicine, Baltimore, USA
| | - I-Ting Cheng
- Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, USA
- Institute for Bioscience and Biotechnology Research, Rockville, USA
- The Center for Biomolecular Therapeutics, University of Maryland School of Medicine, Baltimore, USA
| | - Godoy-Ruiz Raquel
- Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, USA
- Institute for Bioscience and Biotechnology Research, Rockville, USA
- The Center for Biomolecular Therapeutics, University of Maryland School of Medicine, Baltimore, USA
| | - David J. Weber
- Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, USA
- Institute for Bioscience and Biotechnology Research, Rockville, USA
- The Center for Biomolecular Therapeutics, University of Maryland School of Medicine, Baltimore, USA
| | - Joseph R. Scalea
- Medical University of South Carolina, Department of Surgery and Immunology, Charleston, SC, USA
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15
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Nguyen KA, DePledge LN, Bian L, Ke Y, Samedi V, Berning AA, Owens P, Wang XJ, Young CD. Polymorphonuclear myeloid-derived suppressor cells and phosphatidylinositol-3 kinase gamma are critical to tobacco-mimicking oral carcinogenesis in mice. J Immunother Cancer 2023; 11:e007110. [PMID: 37734878 PMCID: PMC10514604 DOI: 10.1136/jitc-2023-007110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/23/2023] [Indexed: 09/23/2023] Open
Abstract
BACKGROUND Oral squamous cell carcinoma (OSCC) is a devastating disease most often associated with tobacco consumption that induces a field of mutations from which a tumor arises. Identification of ways to prevent the emergence of cancer in high-risk patients is an ultimate goal for combatting all types of cancer, including OSCC. METHODS Our study employs a mouse model of tongue carcinogenesis induced by tobacco carcinogen mimetic, 4-nitroquinoline 1-oxide (4NQO), to establish tongue dysplasia and OSCC. We use conventional histology, immunohistochemistry, multispectral imaging, mass cytometry, novel cell lines, pharmaceutical inhibition of PI3Kγ, T-cell suppression assays and mouse transplant models in our functional experimentation. RESULTS In our study, we identify Ly6G+ granulocytes as the most abundant immune cell type in a model of tongue carcinogenesis induced by tobacco carcinogen mimetic 4NQO. Targeting Ly6G+ granulocytes with a pharmacologic inhibitor of PI3Kγ, an isoform of PI3K exclusively expressed by myeloid cells, resulted in reduced tongue dysplasia severity, and reduced rates of OSCC. Importantly, we performed functional assays with the Ly6G+ granulocytes induced in cell line models of 4NQO carcinogenesis to demonstrate that these granulocytes have increased polymorphonuclear myeloid-derived suppressor cells (PMN-MDSC) activity against T-cell proliferation and these PMN-MDSCs play a functional role in promoting tumor formation by inhibiting tumor regression in a PI3Kγ-dependent manner. CONCLUSIONS Overall, our data suggest that recruitment of PMN-MDSCs to sites of dysplasia is critical to immune suppression of CD8 T cells, thereby permitting malignancy, and PI3Kγ inhibitors are one mechanism to reduce PMN-MDSC recruitment, immunosuppression and tumorigenesis in OSCC.
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Affiliation(s)
- Khoa A Nguyen
- Department of Pathology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Lisa N DePledge
- Department of Pathology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Li Bian
- Department of Pathology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Yao Ke
- Department of Pathology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
- Department of Pathology & Laboratory Medicine, University of California Davis, Davis, California, USA
| | - Von Samedi
- Department of Pathology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Amber A Berning
- Department of Pathology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Philip Owens
- Department of Pathology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Xiao-Jing Wang
- Department of Pathology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
- Department of Pathology & Laboratory Medicine, University of California Davis, Davis, California, USA
| | - Christian D Young
- Department of Pathology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
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16
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Alattar H, Xu H, Zenke M, Lutz MB. Fully functional monocytic MDSC generation from the murine HoxB8 cell line. Eur J Immunol 2023; 53:e2350466. [PMID: 37367431 DOI: 10.1002/eji.202350466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 05/10/2023] [Accepted: 05/30/2023] [Indexed: 06/28/2023]
Abstract
Myeloid-derived suppressor cells (MDSC) play a crucial role in controlling T-cell responses, but their development and suppressor mechanisms are not fully understood. To study the molecular functions of MDSC, a large number of standardized cells are required. Traditionally, bone marrow (BM) has been used to generate myeloid cell types, including MDSC. In this study, we demonstrate that a previously described protocol for generating monocytic MDSC (M-MDSC) from murine BM with GM-CSF can be fully transferred to BM cells that are conditionally transformed with HoxB8 gene (HoxB8 cells). HoxB8 cells have an extended lifespan and efficiently differentiate into MDSC that are quantitatively and qualitatively comparable to M-MDSC from BM cells. Flow cytometric analyses of LPS/IFN-γ activated cultures revealed the same iNOS+ and/or Arg1+ PD-L1high M-MDSC subsets in similar frequencies from BM or HoxB8 cells. In vitro suppression of CD4+ and CD8+ T-cell proliferations was also largely comparable in their efficacy and its iNOS- or Arg1-dependent suppressor mechanisms, which was confirmed by the similar amounts of nitric oxide (NO) secretion measured from the suppressor assay. Therefore, our data suggest that murine M-MDSC generation from HoxB8 cells with GM-CSF can be used to substitute BM cultures.
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Affiliation(s)
- Haisam Alattar
- Institute for Virology and Immunobiology, University of Würzburg, Würzburg, Germany
- Department of Microbiology and Immunology, Faculty of Pharmacy, Assiut University, Assiut, Egypt
| | - Huaming Xu
- Department of Cell Biology, Institute for Biomedical Engineering, RWTH Aachen University Medical School, Aachen, Germany
- Helmholtz Institute for Biomedical Engineering, RWTH Aachen University, Aachen, Germany
| | - Martin Zenke
- Department of Cell Biology, Institute for Biomedical Engineering, RWTH Aachen University Medical School, Aachen, Germany
- Helmholtz Institute for Biomedical Engineering, RWTH Aachen University, Aachen, Germany
- Department of Hematology, Oncology, Hemostaseology and Stem Cell Transplantation, Faculty of Medicine, RWTH Aachen University Hospital, Aachen, Germany
- Center for Integrated Oncology Aachen Bonn Cologne Düsseldorf (CIO ABCD), Aachen, Germany
| | - Manfred B Lutz
- Institute for Virology and Immunobiology, University of Würzburg, Würzburg, Germany
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17
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Aintablian A, Strozniak S, Heuer M, Lutz MB. M-MDSC in vitro generation from mouse bone marrow with IL-3 reveals high expression and functional activity of arginase 1. Front Immunol 2023; 14:1130600. [PMID: 37275910 PMCID: PMC10235456 DOI: 10.3389/fimmu.2023.1130600] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 05/09/2023] [Indexed: 06/07/2023] Open
Abstract
Myeloid-derived suppressor cells (MDSC) represent major regulators of immune responses, which can control T cells via their inducible nitric oxide synthase (iNOS)- and arginase 1 (Arg1)-mediated effector functions. While GM-CSF is well documented to promote MDSC development, little is known about this potential of IL-3, an established growth factor for mast cells. Here, we show that IL-3, similar to GM-CSF, generates monocytic MDSC (M-MDSC) from murine bone marrow (BM) cells after 3 days of in vitro culture. At this time point, predominantly CD11b+ CD49a+ monocytic and CD11b+ CD49a- FcεR I- neutrophilic cells were detectable, while CD11blow/neg FcεR I+ mast cells accumulated only after extended culture periods. Both growth factors were equivalent in generating M-MDSC with respect to phenotype, cell yield and typical surface markers. However, IL-3 generated M-MDSC produced less TNF, IL-1β and IL-10 after activation with LPS + IFN-γ but showed higher Arg1 expression compared to GM-CSF generated M-MDSC. Arg1 was further induced together with iNOS after MDSC activation. Accordingly, an increased Arg1-dependent suppressor activity by the IL-3 generated M-MDSC was observed using respective iNOS and Arg1 inhibitors. Together, these data indicate that M-MDSC can be generated in vitro by IL-3, similar to GM-CSF, but with increased Arg1 expression and Arg1-mediated suppression capacity. This protocol now allows further in vitro studies on the role of IL-3 for MDSC biology.
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18
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Lackner K, Ebner S, Watschinger K, Maglione M. Multiple Shades of Gray-Macrophages in Acute Allograft Rejection. Int J Mol Sci 2023; 24:ijms24098257. [PMID: 37175964 PMCID: PMC10179242 DOI: 10.3390/ijms24098257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Revised: 04/27/2023] [Accepted: 05/01/2023] [Indexed: 05/15/2023] Open
Abstract
Long-term results following solid organ transplantation do not mirror the excellent short-term results achieved in recent decades. It is therefore clear that current immunosuppressive maintenance protocols primarily addressing the adaptive immune system no longer meet the required clinical need. Identification of novel targets addressing this shortcoming is urgently needed. There is a growing interest in better understanding the role of the innate immune system in this context. In this review, we focus on macrophages, which are known to prominently infiltrate allografts and, during allograft rejection, to be involved in the surge of the adaptive immune response by expression of pro-inflammatory cytokines and direct cytotoxicity. However, this active participation is janus-faced and unspecific targeting of macrophages may not consider the different subtypes involved. Under this premise, we give an overview on macrophages, including their origins, plasticity, and important markers. We then briefly describe their role in acute allograft rejection, which ranges from sustaining injury to promoting tolerance, as well as the impact of maintenance immunosuppressants on macrophages. Finally, we discuss the observed immunosuppressive role of the vitamin-like compound tetrahydrobiopterin and the recent findings that suggest the innate immune system, particularly macrophages, as its target.
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Affiliation(s)
- Katharina Lackner
- Daniel Swarovski Research Laboratory, Department of Visceral, Transplant and Thoracic Surgery, Medical University of Innsbruck, 6020 Innsbruck, Austria
| | - Susanne Ebner
- Daniel Swarovski Research Laboratory, Department of Visceral, Transplant and Thoracic Surgery, Medical University of Innsbruck, 6020 Innsbruck, Austria
| | - Katrin Watschinger
- Institute of Biological Chemistry, Biocenter, Medical University of Innsbruck, 6020 Innsbruck, Austria
| | - Manuel Maglione
- Daniel Swarovski Research Laboratory, Department of Visceral, Transplant and Thoracic Surgery, Medical University of Innsbruck, 6020 Innsbruck, Austria
- Department of Visceral, Transplant, and Thoracic Surgery, Medical University of Innsbruck, 6020 Innsbruck, Austria
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19
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Kabat AM, Pearce EL, Pearce EJ. Metabolism in type 2 immune responses. Immunity 2023; 56:723-741. [PMID: 37044062 PMCID: PMC10938369 DOI: 10.1016/j.immuni.2023.03.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 03/11/2023] [Accepted: 03/15/2023] [Indexed: 04/14/2023]
Abstract
The immune response is tailored to the environment in which it takes place. Immune cells sense and adapt to changes in their surroundings, and it is now appreciated that in addition to cytokines made by stromal and epithelial cells, metabolic cues provide key adaptation signals. Changes in immune cell activation states are linked to changes in cellular metabolism that support function. Furthermore, metabolites themselves can signal between as well as within cells. Here, we discuss recent progress in our understanding of how metabolic regulation relates to type 2 immunity firstly by considering specifics of metabolism within type 2 immune cells and secondly by stressing how type 2 immune cells are integrated more broadly into the metabolism of the organism as a whole.
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Affiliation(s)
- Agnieszka M Kabat
- Bloomberg Kimmel Institute, and Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Erika L Pearce
- Bloomberg Kimmel Institute, and Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA; Department of Biochemistry and Molecular Biology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD 21287, USA
| | - Edward J Pearce
- Bloomberg Kimmel Institute, and Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA; Department of Molecular Microbiology and Immunology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD 21287, USA.
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20
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Wang S, Zhao X, Wu S, Cui D, Xu Z. Myeloid-derived suppressor cells: key immunosuppressive regulators and therapeutic targets in hematological malignancies. Biomark Res 2023; 11:34. [PMID: 36978204 PMCID: PMC10049909 DOI: 10.1186/s40364-023-00475-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 03/15/2023] [Indexed: 03/30/2023] Open
Abstract
The immunosuppressive tumor microenvironment (TME) supports the development of tumors and limits tumor immunotherapy, including hematological malignancies. Hematological malignancies remain a major public health issue with high morbidity and mortality worldwide. As an important component of immunosuppressive regulators, the phenotypic characteristics and prognostic value of myeloid-derived suppressor cells (MDSCs) have received much attention. A variety of MDSC-targeting therapeutic approaches have produced encouraging outcomes. However, the use of various MDSC-targeted treatment strategies in hematologic malignancies is still difficult due to the heterogeneity of hematologic malignancies and the complexity of the immune system. In this review, we summarize the biological functions of MDSCs and further provide a summary of the phenotypes and suppressive mechanisms of MDSC populations expanded in various types of hematological malignancy contexts. Moreover, we discussed the clinical correlation between MDSCs and the diagnosis of malignant hematological disease, as well as the drugs targeting MDSCs, and focused on summarizing the therapeutic strategies in combination with other immunotherapies, such as various immune checkpoint inhibitors (ICIs), that are under active investigation. We highlight the new direction of targeting MDSCs to improve the therapeutic efficacy of tumors.
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Affiliation(s)
- Shifen Wang
- Department of Blood Transfusion, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Xingyun Zhao
- Department of Blood Transfusion, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Siwen Wu
- Department of Blood Transfusion, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Dawei Cui
- Department of Blood Transfusion, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.
| | - Zhenshu Xu
- Department of Hematology, Fujian Institute of Hematology, Fujian Provincial Key Laboratory on Hematology, Fujian Medical University Union Hospital, Fuzhou, China.
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21
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Stavrou V, Fultang L, Booth S, De Simone D, Bartnik A, Scarpa U, Gneo L, Panetti S, Potluri S, Almowaled M, Barlow J, Jankevics A, Lloyd G, Southam A, Priestman DA, Cheng P, Dunn W, Platt F, Endou H, Craddock C, Keeshan K, Mussai F, De Santo C. Invariant NKT cells metabolically adapt to the acute myeloid leukaemia environment. Cancer Immunol Immunother 2023; 72:543-560. [PMID: 35962843 PMCID: PMC9947083 DOI: 10.1007/s00262-022-03268-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 07/27/2022] [Indexed: 10/15/2022]
Abstract
Acute myeloid leukaemia (AML) creates an immunosuppressive environment to conventional T cells through Arginase 2 (ARG2)-induced arginine depletion. We identify that AML blasts release the acute phase protein serum amyloid A (SAA), which acts in an autocrine manner to upregulate ARG2 expression and activity, and promote AML blast viability. Following in vitro cross-talk invariant natural killer T (iNKT) cells become activated, upregulate mitochondrial capacity, and release IFN-γ. iNKT retain their ability to proliferate and be activated despite the low arginine AML environment, due to the upregulation of Large Neutral Amino Acid Transporter-1 (LAT-1) and Argininosuccinate Synthetase 1 (ASS)-dependent amino acid pathways, resulting in AML cell death. T cell proliferation is restored in vitro and in vivo. The capacity of iNKT cells to restore antigen-specific T cell immunity was similarly demonstrated against myeloid-derived suppressor cells (MDSCs) in wild-type and Jα18-/- syngeneic lymphoma-bearing models in vivo. Thus, stimulation of iNKT cell activity has the potential as an immunotherapy against AML or as an adjunct to boost antigen-specific T cell immunotherapies in haematological or solid cancers.
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Affiliation(s)
- Victoria Stavrou
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, B15 2TT, UK
| | - Livingstone Fultang
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, B15 2TT, UK
| | - Sarah Booth
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, B15 2TT, UK
| | - Daniele De Simone
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, B15 2TT, UK
| | - Arekdiusz Bartnik
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, B15 2TT, UK
| | - Ugo Scarpa
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, B15 2TT, UK
| | - Luciana Gneo
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, B15 2TT, UK
| | - Silvia Panetti
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, B15 2TT, UK
| | - Sandeep Potluri
- Institute of Cancer and Genomics, University of Birmingham, Birmingham, B15 2TT, UK
| | - Meaad Almowaled
- Paul O'Gorman Leukaemia Research Centre, University of Glasgow, Glasgow, G12 0YN, UK
| | - Jonathan Barlow
- School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham, B15 2TT, UK
| | - Andris Jankevics
- School of Biosciences and Phenome Centre Birmingham, University of Birmingham, Birmingham, B15 2TT, UK
| | - Gavin Lloyd
- School of Biosciences and Phenome Centre Birmingham, University of Birmingham, Birmingham, B15 2TT, UK
| | - Andrew Southam
- School of Biosciences and Phenome Centre Birmingham, University of Birmingham, Birmingham, B15 2TT, UK
| | - David A Priestman
- Department of Pharmacology, University of Oxford, Oxford, OX1 3QT, UK
| | - Paul Cheng
- Bio-Cancer Treatment International, Hong Kong Science Park, Hong Kong, China
| | - Warwick Dunn
- Institute of Cancer and Genomics, University of Birmingham, Birmingham, B15 2TT, UK.,Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, B15 2TT, UK
| | - Frances Platt
- Department of Pharmacology, University of Oxford, Oxford, OX1 3QT, UK
| | - Hitoshi Endou
- J-Pharma Co. Ltd, Yokohama, Kanagawa, 230-0046, Japan
| | - Charles Craddock
- Institute of Cancer and Genomics, University of Birmingham, Birmingham, B15 2TT, UK
| | - Karen Keeshan
- Paul O'Gorman Leukaemia Research Centre, University of Glasgow, Glasgow, G12 0YN, UK
| | - Francis Mussai
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, B15 2TT, UK.
| | - Carmela De Santo
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, B15 2TT, UK
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22
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Calvert RD, Fleet JC, Fournier PGJ, Juarez P, Burcham GN, Haverkamp JM, Guise TA, Ratliff TL, Elzey BD. Monocytic Myeloid-Derived Suppressor Cells from Tumor Tissue Are a Differentiated Cell with Limited Fate Plasticity. Immunohorizons 2022; 6:790-806. [PMID: 36480485 DOI: 10.4049/immunohorizons.2200079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 11/08/2022] [Indexed: 12/13/2022] Open
Abstract
Owing to ease of access and high yield, most murine myeloid-derived suppressor cell (MDSC) knowledge comes from the study of spleen-derived MDSCs rather than those isolated from the tumor. Although several studies have identified subtle differences in suppressive function between these MDSCs, a recent report demonstrated that the whole peripheral myeloid compartment poorly reflects myeloid populations found at the tumor. We confirm and extend these observations by presenting data that indicate extensive differences exist between peripheral and tumor MDSCs, suggesting that it may be inappropriate to use spleen MDSCs as surrogates for studying tumor MDSCs. Using cytospins, we observed that tumor MDSCs have undergone a morphologic shift from immature myeloid cell forms commonly seen in bone marrow (BM) and spleen MDSCs and acquired mature myeloid cell characteristics. Spleen and BM monocyte-like MDSCs (M-MDSCs) readily responded to differentiation signals for multiple myeloid cell types whereas tumor M-MDSCs had remarkably reduced cellular plasticity. At the time of isolation, M-MDSCs from BM or spleen have little to no T cell suppressive activity whereas those from the tumor possess immediate and efficient T cell suppressive function. Finally, microarray analysis revealed that the transcriptomes of tumor and spleen M-MDSCs possessed >4500 differentially expressed transcripts. We conclude that tumor M-MDSCs are more differentiated and mature, and that they are morphologically, genetically, and functionally distinct from spleen and BM M-MDSCs. These observations have important implications for the design of anti-MDSC therapies and suggest that preclinical studies using nontumor MDSCs could lead to results not applicable to tumor MDSCs.
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Affiliation(s)
- Ryan D Calvert
- Department of Science and Mathematics, Tabor College, Hillsboro, KS
| | - James C Fleet
- Department of Nutrition Science, University of Texas, Austin, TX
| | - Pierrick G J Fournier
- Center for Scientific Research and Higher Education at Ensenada, Ensenada, Baja California, Mexico
| | - Patricia Juarez
- Center for Scientific Research and Higher Education at Ensenada, Ensenada, Baja California, Mexico
| | - Grant N Burcham
- Heeke Animal Disease Diagnostic Laboratory, College of Veterinary Medicine, Purdue University, Dubois, IN.,Department of Comparative Pathobiology, Purdue University, West Lafayette, IN
| | | | - Theresa A Guise
- Division of Internal Medicine, Department of Endocrine Neoplasia and Hormonal Disorders, The University of Texas MD Anderson Cancer Center, Houston, TX; and
| | - Timothy L Ratliff
- Department of Comparative Pathobiology, Purdue University, West Lafayette, IN.,Center for Cancer Research, Purdue University, West Lafayette, IN
| | - Bennett D Elzey
- Division of Internal Medicine, Department of Endocrine Neoplasia and Hormonal Disorders, The University of Texas MD Anderson Cancer Center, Houston, TX; and.,Center for Cancer Research, Purdue University, West Lafayette, IN
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23
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Ho M, Xiao A, Yi D, Zanwar S, Bianchi G. Treating Multiple Myeloma in the Context of the Bone Marrow Microenvironment. Curr Oncol 2022; 29:8975-9005. [PMID: 36421358 PMCID: PMC9689284 DOI: 10.3390/curroncol29110705] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 11/08/2022] [Accepted: 11/18/2022] [Indexed: 11/24/2022] Open
Abstract
The treatment landscape of multiple myeloma (MM) has evolved considerably with the FDA-approval of at least 15 drugs over the past two decades. Together with the use of autologous stem cell transplantation, these novel therapies have resulted in significant survival benefit for patients with MM. In particular, our improved understanding of the BM and immune microenvironment has led to the development of highly effective immunotherapies that have demonstrated unprecedented response rates even in the multiple refractory disease setting. However, MM remains challenging to treat especially in a high-risk setting. A key mediator of therapeutic resistance in MM is the bone marrow (BM) microenvironment; a deeper understanding is necessary to facilitate the development of therapies that target MM in the context of the BM milieu to elicit deeper and more durable responses with the ultimate goal of long-term control or a cure of MM. In this review, we discuss our current understanding of the role the BM microenvironment plays in MM pathogenesis, with a focus on its immunosuppressive nature. We also review FDA-approved immunotherapies currently in clinical use and highlight promising immunotherapeutic approaches on the horizon.
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Affiliation(s)
- Matthew Ho
- Department of Internal Medicine, Mayo Clinic, Rochester, MN 55902, USA
| | - Alexander Xiao
- Department of Internal Medicine, Mayo Clinic, Rochester, MN 55902, USA
| | - Dongni Yi
- Department of Internal Medicine, Mayo Clinic, Rochester, MN 55902, USA
| | - Saurabh Zanwar
- Division of Hematology, Department of Internal Medicine, Mayo Clinic, Rochester, MN 55902, USA
| | - Giada Bianchi
- Division of Hematology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02120, USA
- Correspondence: ; Tel.: +1-617-525-4953
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24
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Hu Y, Lu X, Qiu W, Liu H, Wang Q, Chen Y, Liu W, Feng F, Sun H. The Role of Leukocyte Immunoglobulin-Like Receptors Focusing on the Therapeutic Implications of the Subfamily B2. Curr Drug Targets 2022; 23:1430-1452. [PMID: 36017847 DOI: 10.2174/1389450123666220822201605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 05/31/2022] [Accepted: 06/21/2022] [Indexed: 01/25/2023]
Abstract
The leukocyte immunoglobulin (Ig)-like receptors (LILRs) are constituted by five inhibitory subpopulations (LILRB1-5) and six stimulatory subpopulations (LILRA1-6). The LILR populations substantially reside in immune cells, especially myeloid cells, functioning as a regulator in immunosuppressive and immunostimulatory responses, during which the nonclassical major histocompatibility complex (MHC) class I molecules are widely involved. In addition, LILRs are also distributed in certain tumor cells, implicated in the malignancy progression. Collectively, the suppressive Ig-like LILRB2 is relatively well-studied to date. Herein, we summarized the whole family of LILRs and their biologic function in various diseases upon ligation to the critical ligands, therefore providing more information on their potential roles in these pathological processes and giving the clinical significance of strategies targeting LILRs.
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Affiliation(s)
- Yanyu Hu
- Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing 211198, People's Republic of China
| | - Xin Lu
- School of Pharmacy, China Pharmaceutical University, Nanjing 211198, People's Republic of China
| | - Weimin Qiu
- School of Pharmacy, China Pharmaceutical University, Nanjing 211198, People's Republic of China
| | - Hui Liu
- School of Pharmacy, China Pharmaceutical University, Nanjing 211198, People's Republic of China
| | - Qinghua Wang
- School of Pharmacy, China Pharmaceutical University, Nanjing 211198, People's Republic of China
| | - Yao Chen
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, People's Republic of China
| | - Wenyuan Liu
- School of Pharmacy, China Pharmaceutical University, Nanjing 211198, People's Republic of China.,Department of Pharmaceutical Analysis, Key Laboratory of Drug Quality Control and Pharmacovigilance, China Pharmaceutical University, Nanjing 211198, People's Republic of China
| | - Feng Feng
- Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing 211198, People's Republic of China.,Jiangsu Food and Pharmaceuticals Science College, Institute of Food and Pharmaceuticals Research, 223005, People's Republic of China
| | - Haopeng Sun
- School of Pharmacy, China Pharmaceutical University, Nanjing 211198, People's Republic of China
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25
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Wang H, Zhang B, Li R, Chen J, Xu G, Zhu Y, Li J, Liang Q, Hua Q, Wang L, Wen L, Jin M, Fan J, Zhang D, Zhao L, Yu D, Lin Z, Ren J, Zhang T. KIAA1199 drives immune suppression to promote colorectal cancer liver metastasis by modulating neutrophil infiltration. Hepatology 2022; 76:967-981. [PMID: 35108400 DOI: 10.1002/hep.32383] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 01/27/2022] [Accepted: 01/29/2022] [Indexed: 12/18/2022]
Abstract
BACKGROUND AND AIMS Metastasis is the primary cause of cancer mortality, and colorectal cancer (CRC) frequently metastasizes to the liver. Our previous studies demonstrated the critical role of KIAA1199 in tumor invasion and metastasis in CRC. In the present study, we described an immune regulatory effect of KIAA1199 that creates a permissive environment for metastasis. APPROACH AND RESULTS Flow cytometry was used to examine the effects of KIAA1199 on the infiltration of tumor immune cells. Neutrophils and T cells were isolated, stimulated, and/or cultured for in vitro function assays. In the patients with CRC, high expression levels of KIAA1199 were associated with an increased neutrophil infiltration into the liver. This result was further validated in mouse metastasis models. The increased influx of neutrophils contributed to the KIAA1199-driven CRC liver metastasis. Mechanistically, KIAA1199 activated the TGFβ signaling pathway by interacting with the TGFBR1/2 to stimulate CXCL1 and CXCL3 production, thereby driving the aggregation of immunosuppressive neutrophils. Genetic blockade or pharmacologic inhibition of KIAA1199 restored tumor immune infiltration, impeded tumor progression, and potentiated response to immune checkpoint blockade (ICB). CONCLUSIONS These findings indicated that KIAA1199 could facilitate the liver infiltration of immunosuppressive neutrophils via the TGFβ-chemokine (C-X-C motif) ligand (CXCL)3/1-CXCR2 axis, which might be clinically targeted for the treatment of hepatic metastasis.
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Affiliation(s)
- Haihong Wang
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Biying Zhang
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ruiqi Li
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jiayuan Chen
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Guojie Xu
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ying Zhu
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jiao Li
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qing Liang
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qingling Hua
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Lanqing Wang
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Lu Wen
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Min Jin
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jun Fan
- Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Dejun Zhang
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Lei Zhao
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Dandan Yu
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhenyu Lin
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jinghua Ren
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Tao Zhang
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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26
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Ya G, Ren W, Qin R, He J, Zhao S. Role of myeloid-derived suppressor cells in the formation of pre-metastatic niche. Front Oncol 2022; 12:975261. [PMID: 36237333 PMCID: PMC9552826 DOI: 10.3389/fonc.2022.975261] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 09/12/2022] [Indexed: 11/13/2022] Open
Abstract
Metastasis is a complex process, which depends on the interaction between tumor cells and host organs. Driven by the primary tumor, the host organ will establish an environment suitable for the growth of tumor cells before their arrival, which is called the pre-metastasis niche. The formation of pre-metastasis niche requires the participation of a variety of cells, in which myeloid-derived suppressor cells play a very important role. They reach the host organ before the tumor cells, and promote the establishment of the pre-metastasis niche by influencing immunosuppression, vascular leakage, extracellular matrix remodeling, angiogenesis and so on. In this article, we introduced the formation of the pre-metastasis niche and discussed the important role of myeloid-derived suppressor cells. In addition, this paper also emphasized the targeting of myeloid-derived suppressor cells as a therapeutic strategy to inhibit the formation of pre-metastasis niche, which provided a research idea for curbing tumor metastasis.
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Affiliation(s)
- Guoqi Ya
- The First Clinical Medical Institute, Henan University of Chinese Medicine, Zhengzhou, China
| | - Weihong Ren
- Department of Laboratory Medicine, The First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou, China
- *Correspondence: Weihong Ren,
| | - Rui Qin
- The First Clinical Medical Institute, Henan University of Chinese Medicine, Zhengzhou, China
| | - Jiao He
- The First Clinical Medical Institute, Henan University of Chinese Medicine, Zhengzhou, China
| | - Shuo Zhao
- Department of Laboratory Medicine, The First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou, China
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27
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Wu Y, Yi M, Niu M, Mei Q, Wu K. Myeloid-derived suppressor cells: an emerging target for anticancer immunotherapy. Mol Cancer 2022; 21:184. [PMID: 36163047 PMCID: PMC9513992 DOI: 10.1186/s12943-022-01657-y] [Citation(s) in RCA: 105] [Impact Index Per Article: 52.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 09/19/2022] [Indexed: 02/07/2023] Open
Abstract
The clinical responses observed following treatment with immune checkpoint inhibitors (ICIs) support immunotherapy as a potential anticancer treatment. However, a large proportion of patients cannot benefit from it due to resistance or relapse, which is most likely attributable to the multiple immunosuppressive cells in the tumor microenvironment (TME). Myeloid-derived suppressor cells (MDSCs), a heterogeneous array of pathologically activated immature cells, are a chief component of immunosuppressive networks. These cells potently suppress T-cell activity and thus contribute to the immune escape of malignant tumors. New findings indicate that targeting MDSCs might be an alternative and promising target for immunotherapy, reshaping the immunosuppressive microenvironment and enhancing the efficacy of cancer immunotherapy. In this review, we focus primarily on the classification and inhibitory function of MDSCs and the crosstalk between MDSCs and other myeloid cells. We also briefly summarize the latest approaches to therapies targeting MDSCs.
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Affiliation(s)
- Yuze Wu
- Department of Oncology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Avenue, Wuhan, 430030, People's Republic of China
| | - Ming Yi
- Department of Breast Surgery, Zhejiang University School of Medicine First Affiliated Hospital, Hangzhou, 310003, China
| | - Mengke Niu
- Department of Oncology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Avenue, Wuhan, 430030, People's Republic of China
| | - Qi Mei
- Department of Oncology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Avenue, Wuhan, 430030, People's Republic of China. .,Cancer Center, Shanxi Bethune Hospital, Shanxi Academy of Medical Science, Tongji Shanxi Hospital, Third Hospital of Shanxi Medical University, Taiyuan, Shanxi, People's Republic of China.
| | - Kongming Wu
- Department of Oncology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Avenue, Wuhan, 430030, People's Republic of China.
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28
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Abstract
The clinical responses observed following treatment with immune checkpoint inhibitors (ICIs) support immunotherapy as a potential anticancer treatment. However, a large proportion of patients cannot benefit from it due to resistance or relapse, which is most likely attributable to the multiple immunosuppressive cells in the tumor microenvironment (TME). Myeloid-derived suppressor cells (MDSCs), a heterogeneous array of pathologically activated immature cells, are a chief component of immunosuppressive networks. These cells potently suppress T-cell activity and thus contribute to the immune escape of malignant tumors. New findings indicate that targeting MDSCs might be an alternative and promising target for immunotherapy, reshaping the immunosuppressive microenvironment and enhancing the efficacy of cancer immunotherapy. In this review, we focus primarily on the classification and inhibitory function of MDSCs and the crosstalk between MDSCs and other myeloid cells. We also briefly summarize the latest approaches to therapies targeting MDSCs.
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Affiliation(s)
- Yuze Wu
- Department of Oncology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Avenue, Wuhan, 430030, People's Republic of China
| | - Ming Yi
- Department of Breast Surgery, Zhejiang University School of Medicine First Affiliated Hospital, Hangzhou, 310003, China
| | - Mengke Niu
- Department of Oncology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Avenue, Wuhan, 430030, People's Republic of China
| | - Qi Mei
- Department of Oncology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Avenue, Wuhan, 430030, People's Republic of China.
- Cancer Center, Shanxi Bethune Hospital, Shanxi Academy of Medical Science, Tongji Shanxi Hospital, Third Hospital of Shanxi Medical University, Taiyuan, Shanxi, People's Republic of China.
| | - Kongming Wu
- Department of Oncology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Avenue, Wuhan, 430030, People's Republic of China.
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29
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Oliver L, Alvarez R, Diaz R, Valdés A, Colligan SH, Nemeth MJ, Twum DYF, Fernández A, Fernández-Medina O, Carlson LM, Yu H, Eng KH, Hensen ML, Rábade-Chediak ML, Fernández LE, Lee KP, Perez L, Muhitch JB, Mesa C, Abrams SI. Mitigating the prevalence and function of myeloid-derived suppressor cells by redirecting myeloid differentiation using a novel immune modulator. J Immunother Cancer 2022; 10:e004710. [PMID: 36150744 PMCID: PMC9511656 DOI: 10.1136/jitc-2022-004710] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/16/2022] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND Immune suppression is common in neoplasia and a major driver is tumor-induced myeloid dysfunction. Yet, overcoming such myeloid cell defects remains an untapped strategy to reverse suppression and improve host defense. Exposure of bone marrow progenitors to heightened levels of myeloid growth factors in cancer or following certain systemic treatments promote abnormal myelopoiesis characterized by the production of myeloid-derived suppressor cells (MDSCs) and a deficiency in antigen-presenting cell function. We previously showed that a novel immune modulator, termed 'very small size particle' (VSSP), attenuates MDSC function in tumor-bearing mice, which was accompanied by an increase in dendritic cells (DCs) suggesting that VSSP exhibits myeloid differentiating properties. Therefore, here, we addressed two unresolved aspects of the mechanism of action of this unique immunomodulatory agent: (1) does VSSP alter myelopoiesis in the bone marrow to redirect MDSC differentiation toward a monocyte/macrophage or DC fate? and (2) does VSSP mitigate the frequency and suppressive function of human tumor-induced MDSCs? METHODS To address the first question, we first used a murine model of granulocyte-colony stimulating factor-driven emergency myelopoiesis following chemotherapy-induced myeloablation, which skews myeloid output toward MDSCs, especially the polymorphonuclear (PMN)-MDSC subset. Following VSSP treatment, progenitors and their myeloid progeny were analyzed by immunophenotyping and MDSC function was evaluated by suppression assays. To strengthen rigor, we validated our findings in tumor-bearing mouse models. To address the second question, we conducted a clinical trial in patients with metastatic renal cell carcinoma, wherein 15 patients were treated with VSSP. Endpoints in this study included safety and impact on PMN-MDSC frequency and function. RESULTS We demonstrated that VSSP diminished PMN-MDSCs by shunting granulocyte-monocyte progenitor differentiation toward monocytes/macrophages and DCs with heightened expression of the myeloid-dependent transcription factors interferon regulatory factor-8 and PU.1. This skewing was at the expense of expansion of granulocytic progenitors and rendered the remaining MDSCs less suppressive. Importantly, these effects were also demonstrated in a clinical setting wherein VSSP monotherapy significantly reduced circulating PMN-MDSCs, and their suppressive function. CONCLUSIONS Altogether, these data revealed VSSP as a novel regulator of myeloid biology that mitigates MDSCs in cancer patients and reinstates a more normal myeloid phenotype that potentially favors immune activation over immune suppression.
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Affiliation(s)
- Liliana Oliver
- Department of Immunoregulation, Immunology and Immunotherapy Direction, Center of Molecular Immunology, Havana, Cuba
| | - Rydell Alvarez
- Department of Immunoregulation, Immunology and Immunotherapy Direction, Center of Molecular Immunology, Havana, Cuba
| | - Raquel Diaz
- Department of Oncology, Joaquín Albarrán Hospital, Havana, Cuba
| | - Anet Valdés
- Department of Immunoregulation, Immunology and Immunotherapy Direction, Center of Molecular Immunology, Havana, Cuba
| | - Sean H Colligan
- Department of Immunology, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA
| | - Michael J Nemeth
- Department of Immunology, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA
- Department of Medicine, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA
| | - Danielle Y F Twum
- Department of Immunology, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA
| | - Audry Fernández
- Department of Immunoregulation, Immunology and Immunotherapy Direction, Center of Molecular Immunology, Havana, Cuba
| | - Olivia Fernández-Medina
- Department of Immunoregulation, Immunology and Immunotherapy Direction, Center of Molecular Immunology, Havana, Cuba
| | - Louise M Carlson
- Department of Immunology, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA
- Department of Medicine, Indiana University Simon Comprehensive Cancer Center, Indianapolis, Indiana, USA
| | - Han Yu
- Department of Biostatistics & Bioinformatics, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA
| | - Kevin H Eng
- Department of Biostatistics & Bioinformatics, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA
| | - Mary L Hensen
- Department of Immunology, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA
| | - Maura L Rábade-Chediak
- Department of Immunoregulation, Immunology and Immunotherapy Direction, Center of Molecular Immunology, Havana, Cuba
| | - Luis Enrique Fernández
- Department of Immunoregulation, Immunology and Immunotherapy Direction, Center of Molecular Immunology, Havana, Cuba
| | - Kelvin P Lee
- Department of Immunology, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA
- Department of Medicine, Indiana University Simon Comprehensive Cancer Center, Indianapolis, Indiana, USA
| | - Leslie Perez
- Clinical Direction, Center of Molecular Immunology, Havana, Cuba
| | - Jason B Muhitch
- Department of Immunology, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA
| | - Circe Mesa
- Department of Immunoregulation, Immunology and Immunotherapy Direction, Center of Molecular Immunology, Havana, Cuba
- Innovative Immunotherapy Alliance, S. A. Mariel, Artemisa, Cuba
| | - Scott I Abrams
- Department of Immunology, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA
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30
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Kumar A, Taghi Khani A, Sanchez Ortiz A, Swaminathan S. GM-CSF: A Double-Edged Sword in Cancer Immunotherapy. Front Immunol 2022; 13:901277. [PMID: 35865534 PMCID: PMC9294178 DOI: 10.3389/fimmu.2022.901277] [Citation(s) in RCA: 61] [Impact Index Per Article: 30.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 06/06/2022] [Indexed: 12/23/2022] Open
Abstract
Granulocyte-macrophage colony-stimulating factor (GM-CSF) is a cytokine that drives the generation of myeloid cell subsets including neutrophils, monocytes, macrophages, and dendritic cells in response to stress, infections, and cancers. By modulating the functions of innate immune cells that serve as a bridge to activate adaptive immune responses, GM-CSF globally impacts host immune surveillance under pathologic conditions. As with other soluble mediators of immunity, too much or too little GM-CSF has been found to promote cancer aggressiveness. While too little GM-CSF prevents the appropriate production of innate immune cells and subsequent activation of adaptive anti-cancer immune responses, too much of GM-CSF can exhaust immune cells and promote cancer growth. The consequences of GM-CSF signaling in cancer progression are a function of the levels of GM-CSF, the cancer type, and the tumor microenvironment. In this review, we first discuss the secretion of GM-CSF, signaling downstream of the GM-CSF receptor, and GM-CSF’s role in modulating myeloid cell homeostasis. We then outline GM-CSF’s anti-tumorigenic and pro-tumorigenic effects both on the malignant cells and on the non-malignant immune and other cells in the tumor microenvironment. We provide examples of current clinical and preclinical strategies that harness GM-CSF’s anti-cancer potential while minimizing its deleterious effects. We describe the challenges in achieving the Goldilocks effect during administration of GM-CSF-based therapies to patients with cancer. Finally, we provide insights into how technologies that map the immune microenvironment spatially and temporally may be leveraged to intelligently harness GM-CSF for treatment of malignancies.
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Affiliation(s)
- Anil Kumar
- Department of Systems Biology, Beckman Research Institute of City of Hope, Monrovia, CA, United States
| | - Adeleh Taghi Khani
- Department of Systems Biology, Beckman Research Institute of City of Hope, Monrovia, CA, United States
| | - Ashly Sanchez Ortiz
- Department of Systems Biology, Beckman Research Institute of City of Hope, Monrovia, CA, United States
| | - Srividya Swaminathan
- Department of Systems Biology, Beckman Research Institute of City of Hope, Monrovia, CA, United States
- Department of Hematological Malignancies, Beckman Research Institute of City of Hope, Monrovia, CA, United States
- *Correspondence: Srividya Swaminathan,
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31
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Fu Y, Pajulas A, Wang J, Zhou B, Cannon A, Cheung CCL, Zhang J, Zhou H, Fisher AJ, Omstead DT, Khan S, Han L, Renauld JC, Paczesny S, Gao H, Liu Y, Yang L, Tighe RM, Licona-Limón P, Flavell RA, Takatsuka S, Kitamura D, Sun J, Bilgicer B, Sears CR, Yang K, Kaplan MH. Mouse pulmonary interstitial macrophages mediate the pro-tumorigenic effects of IL-9. Nat Commun 2022; 13:3811. [PMID: 35778404 PMCID: PMC9249769 DOI: 10.1038/s41467-022-31596-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2021] [Accepted: 06/21/2022] [Indexed: 12/13/2022] Open
Abstract
Although IL-9 has potent anti-tumor activity in adoptive cell transfer therapy, some models suggest that it can promote tumor growth. Here, we show that IL-9 signaling is associated with poor outcomes in patients with various forms of lung cancer, and is required for lung tumor growth in multiple mouse models. CD4+ T cell-derived IL-9 promotes the expansion of both CD11c+ and CD11c- interstitial macrophage populations in lung tumor models. Mechanistically, the IL-9/macrophage axis requires arginase 1 (Arg1) to mediate tumor growth. Indeed, adoptive transfer of Arg1+ but not Arg1- lung macrophages to Il9r-/- mice promotes tumor growth. Moreover, targeting IL-9 signaling using macrophage-specific nanoparticles restricts lung tumor growth in mice. Lastly, elevated expression of IL-9R and Arg1 in tumor lesions is associated with poor prognosis in lung cancer patients. Thus, our study suggests the IL-9/macrophage/Arg1 axis is a potential therapeutic target for lung cancer therapy.
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Affiliation(s)
- Yongyao Fu
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Abigail Pajulas
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Jocelyn Wang
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Baohua Zhou
- Department of Pediatrics and Herman B Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Anthony Cannon
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Cherry Cheuk Lam Cheung
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Jilu Zhang
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Huaxin Zhou
- Division of Pulmonary, Critical Care, Sleep and Occupational Medicine/Department of Medicine, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Amanda Jo Fisher
- Division of Pulmonary, Critical Care, Sleep and Occupational Medicine/Department of Medicine, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - David T Omstead
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, IN, 46556, USA
| | - Sabrina Khan
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, IN, 46556, USA
| | - Lei Han
- Department of Pediatrics and Herman B Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Jean-Christophe Renauld
- Ludwig Institute for Cancer Research, Experimental Medicine Unit, Université Catholique de Louvain, Brussels, 1200, Belgium
| | - Sophie Paczesny
- Department of Microbiology and Immunology, Medical University of South Carolina, 173 Ashley Avenue, Charleston, SC, 29425, USA
| | - Hongyu Gao
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Yunlong Liu
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Lei Yang
- Department of Pediatrics and Herman B Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Robert M Tighe
- Division of Pulmonary, Allergy, and Critical Care Medicine, Duke University Medical Center, Durham, NC, 27710, USA
| | - Paula Licona-Limón
- Departamento de Biologia Celular y del Desarrollo, Instituto de Fisiologia Celular, Universidad Nacional Autónoma de México, 04510, Mexico City, Mexico
| | - Richard A Flavell
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT, 06510, USA
| | - Shogo Takatsuka
- Research Institute for Biomedical Sciences (RIBS), Tokyo University of Science, Noda, Japan
| | - Daisuke Kitamura
- Research Institute for Biomedical Sciences (RIBS), Tokyo University of Science, Noda, Japan
| | - Jie Sun
- Department of Medicine, Mayo Clinic, Rochester, MN, 55905, USA
| | - Basar Bilgicer
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, IN, 46556, USA
| | - Catherine R Sears
- Division of Pulmonary, Critical Care, Sleep and Occupational Medicine/Department of Medicine, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Kai Yang
- Department of Pediatrics and Herman B Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Mark H Kaplan
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, IN, 46202, USA.
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32
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Quail DF, Amulic B, Aziz M, Barnes BJ, Eruslanov E, Fridlender ZG, Goodridge HS, Granot Z, Hidalgo A, Huttenlocher A, Kaplan MJ, Malanchi I, Merghoub T, Meylan E, Mittal V, Pittet MJ, Rubio-Ponce A, Udalova IA, van den Berg TK, Wagner DD, Wang P, Zychlinsky A, de Visser KE, Egeblad M, Kubes P. Neutrophil phenotypes and functions in cancer: A consensus statement. J Exp Med 2022; 219:e20220011. [PMID: 35522219 PMCID: PMC9086501 DOI: 10.1084/jem.20220011] [Citation(s) in RCA: 102] [Impact Index Per Article: 51.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 03/11/2022] [Accepted: 03/23/2022] [Indexed: 12/12/2022] Open
Abstract
Neutrophils are the first responders to infection and inflammation and are thus a critical component of innate immune defense. Understanding the behavior of neutrophils as they act within various inflammatory contexts has provided insights into their role in sterile and infectious diseases; however, the field of neutrophils in cancer is comparatively young. Here, we summarize key concepts and current knowledge gaps related to the diverse roles of neutrophils throughout cancer progression. We discuss sources of neutrophil heterogeneity in cancer and provide recommendations on nomenclature for neutrophil states that are distinct in maturation and activation. We address discrepancies in the literature that highlight a need for technical standards that ought to be considered between laboratories. Finally, we review emerging questions in neutrophil biology and innate immunity in cancer. Overall, we emphasize that neutrophils are a more diverse population than previously appreciated and that their role in cancer may present novel unexplored opportunities to treat cancer.
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Affiliation(s)
- Daniela F. Quail
- Rosalind and Morris Goodman Cancer Institute, Department of Physiology, McGill University, Montreal, Quebec, Canada
| | - Borko Amulic
- Cellular and Molecular Medicine, University of Bristol, Bristol, UK
| | - Monowar Aziz
- Center for Immunology and Inflammation, Feinstein Institutes for Medical Research, Manhasset, NY
| | - Betsy J. Barnes
- Center for Autoimmune, Musculoskeletal and Hematopoietic Diseases, Feinstein Institutes for Medical Research, Manhasset, NY
- Departments of Molecular Medicine and Pediatrics, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY
| | - Evgeniy Eruslanov
- Division of Thoracic Surgery, Department of Surgery, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA
| | - Zvi G. Fridlender
- Hadassah Medical Center, Institute of Pulmonary Medicine, Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Helen S. Goodridge
- Board of Governors Regenerative Medicine Institute and Research Division of Immunology, Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, CA
| | - Zvi Granot
- Department of Developmental Biology and Cancer Research, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Andrés Hidalgo
- Vascular Biology and Therapeutics Program and Department of Immunobiology, Yale University School of Medicine, New Haven, CT
- Area of Cell and Developmental Biology, Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid, Spain
| | - Anna Huttenlocher
- Department of Medical Microbiology and Immunology, University of Wisconsin-Madison, Madison, WI
- Department of Pediatrics, University of Wisconsin-Madison, Madison, WI
| | - Mariana J. Kaplan
- Systemic Autoimmunity Branch, Intramural Research Program, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD
| | - Ilaria Malanchi
- Tumour-Host Interaction Laboratory, The Francis Crick Institute, London, UK
| | - Taha Merghoub
- Ludwig Collaborative and Swim Across America Laboratory, Memorial Sloan Kettering Cancer Center, New York, NY
- Parker Institute for Cancer Immunotherapy, Memorial Sloan Kettering Cancer Center, New York, NY
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY
- Weill Cornell Medical College, New York, NY
| | - Etienne Meylan
- Lung Cancer and Immuno-Oncology Laboratory, Bordet Cancer Research Laboratories, Institut Jules Bordet, Université Libre de Bruxelles, Anderlecht, Belgium
- Laboratory of Immunobiology, Université Libre de Bruxelles, Gosselies, Belgium
| | - Vivek Mittal
- Department of Cardiothoracic Surgery, Neuberger Berman Foundation Lung Cancer Research Center, Weill Cornell Medicine, New York, NY
- Department of Cell and Developmental Biology, Weill Cornell Medicine, New York, NY
| | - Mikael J. Pittet
- Department of Pathology and Immunology, University of Geneva, Geneva, Switzerland
- Ludwig Institute for Cancer Research, Lausanne Branch, Lausanne, Switzerland
- Department of Oncology, Geneva University Hospitals, Geneva, Switzerland
- AGORA Cancer Research Center, Lausanne, Switzerland
| | - Andrea Rubio-Ponce
- Area of Cell and Developmental Biology, Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid, Spain
| | - Irina A. Udalova
- University of Oxford, Kennedy Institute of Rheumatology, Oxford, UK
| | - Timo K. van den Berg
- Laboratory of Immunotherapy, Sanquin Research, Amsterdam, Netherlands
- Department of Molecular Cell Biology and Immunology, Amsterdam University Medical Center, Amsterdam, Netherlands
| | - Denisa D. Wagner
- Program in Cellular and Molecular Medicine, Division of Hematology/Oncology, Boston Children’s Hospital and Harvard Medical School, Boston, MA
| | - Ping Wang
- Center for Immunology and Inflammation, Feinstein Institutes for Medical Research, Manhasset, NY
| | - Arturo Zychlinsky
- Department of Cellular Microbiology, Max Planck Institute for Infection Biology, Berlin, Germany
| | - Karin E. de Visser
- Division of Tumour Biology and Immunology, Oncode Institute, Netherlands Cancer Institute, Amsterdam, Netherlands
- Department of Immunohematology and Blood Transfusion, Leiden University Medical Centre, Leiden, Netherlands
- Banbury Center meeting organizers, Diverse Functions of Neutrophils in Cancer, Cold Spring Harbor Laboratory, New York, NY
| | - Mikala Egeblad
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY
- Banbury Center meeting organizers, Diverse Functions of Neutrophils in Cancer, Cold Spring Harbor Laboratory, New York, NY
| | - Paul Kubes
- Department of Pharmacology and Physiology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- Banbury Center meeting organizers, Diverse Functions of Neutrophils in Cancer, Cold Spring Harbor Laboratory, New York, NY
- Department of Microbiology, Immunology & Infectious Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- Calvin, Phoebe and Joan Snyder Institute for Chronic Diseases, University of Calgary, Calgary, Alberta, Canada
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33
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Rosenbloom R, Gavrish I, Tseng AE, Seidel K, Yabaji SM, Gertje HP, Huber BR, Kramnik I, Crossland NA. Progression and Dissemination of Pulmonary Mycobacterium Avium Infection in a Susceptible Immunocompetent Mouse Model. Int J Mol Sci 2022; 23:ijms23115999. [PMID: 35682679 PMCID: PMC9181083 DOI: 10.3390/ijms23115999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 05/20/2022] [Accepted: 05/25/2022] [Indexed: 01/11/2023] Open
Abstract
Pulmonary infections caused by the group of nontuberculosis mycobacteria (NTM), Mycobacterium avium complex (MAC), are a growing public health concern with incidence and mortality steadily increasing globally. Granulomatous inflammation is the hallmark of MAC lung infection, yet reliable correlates of disease progression, susceptibility, and resolution are poorly defined. Unlike widely used inbred mouse strains, mice that carry the mutant allele at the genetic locus sst1 develop human-like pulmonary tuberculosis featuring well-organized caseating granulomas. We characterized pulmonary temporospatial outcomes of intranasal and left intrabronchial M. avium spp. hominissuis (M.av) induced pneumonia in B6.Sst1S mice, which carries the sst1 mutant allele. We utilized traditional semi-quantitative histomorphological evaluation, in combination with fluorescent multiplex immunohistochemistry (fmIHC), whole slide imaging, and quantitative digital image analysis. Followingintrabronchiolar infection with the laboratory M.av strain 101, the B6.Sst1S pulmonary lesions progressed 12-16 weeks post infection (wpi), with plateauing and/or resolving disease by 21 wpi. Caseating granulomas were not observed during the study. Disease progression from 12-16 wpi was associated with increased acid-fast bacilli, area of secondary granulomatous pneumonia lesions, and Arg1+ and double positive iNOS+/Arg1+ macrophages. Compared to B6 WT, at 16 wpi, B6.Sst1S lungs exhibited an increased area of acid-fast bacilli, larger secondary lesions with greater Arg1+ and double positive iNOS+/Arg1+ macrophages, and reduced T cell density. This morphomolecular analysis of histologic correlates of disease progression in B6.Sst1S could serve as a platform for assessment of medical countermeasures against NTM infection.
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Affiliation(s)
- Raymond Rosenbloom
- Graduate Medical Sciences, Boston University School of Medicine, Boston, MA 02118, USA;
- National Emerging Infectious Diseases Laboratories, Boston University, Boston, MA 02215, USA; (I.G.); (A.E.T.); (K.S.); (S.M.Y.); (H.P.G.)
| | - Igor Gavrish
- National Emerging Infectious Diseases Laboratories, Boston University, Boston, MA 02215, USA; (I.G.); (A.E.T.); (K.S.); (S.M.Y.); (H.P.G.)
| | - Anna E. Tseng
- National Emerging Infectious Diseases Laboratories, Boston University, Boston, MA 02215, USA; (I.G.); (A.E.T.); (K.S.); (S.M.Y.); (H.P.G.)
- Department of Pathology & Laboratory Medicine, Boston University School of Medicine, Boston, MA 02118, USA
| | - Kerstin Seidel
- National Emerging Infectious Diseases Laboratories, Boston University, Boston, MA 02215, USA; (I.G.); (A.E.T.); (K.S.); (S.M.Y.); (H.P.G.)
| | - Shivraj M. Yabaji
- National Emerging Infectious Diseases Laboratories, Boston University, Boston, MA 02215, USA; (I.G.); (A.E.T.); (K.S.); (S.M.Y.); (H.P.G.)
| | - Hans P. Gertje
- National Emerging Infectious Diseases Laboratories, Boston University, Boston, MA 02215, USA; (I.G.); (A.E.T.); (K.S.); (S.M.Y.); (H.P.G.)
| | - Bertrand R. Huber
- Department of Neurology, Boston University School of Medicine, Boston, MA 02118, USA;
| | - Igor Kramnik
- National Emerging Infectious Diseases Laboratories, Boston University, Boston, MA 02215, USA; (I.G.); (A.E.T.); (K.S.); (S.M.Y.); (H.P.G.)
- Department of Medicine, Boston University School of Medicine, Boston, MA 02118, USA
- Correspondence: (I.K.); (N.A.C.); Tel.: +1-617-358-9285 (I.K. & N.A.C.)
| | - Nicholas A. Crossland
- National Emerging Infectious Diseases Laboratories, Boston University, Boston, MA 02215, USA; (I.G.); (A.E.T.); (K.S.); (S.M.Y.); (H.P.G.)
- Department of Pathology & Laboratory Medicine, Boston University School of Medicine, Boston, MA 02118, USA
- Correspondence: (I.K.); (N.A.C.); Tel.: +1-617-358-9285 (I.K. & N.A.C.)
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34
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Dong J, Huang Y, Zhou Z, Sun M. Breaking Immunosuppressive Barriers by Engineered Nanoplatforms for Turning Cold Tumor to Hot. ADVANCED THERAPEUTICS 2022. [DOI: 10.1002/adtp.202200020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jingwen Dong
- State Key Laboratory of Natural Medicines Department of Pharmaceutics China Pharmaceutical University Nanjing 210009 P. R. China
| | - Ying Huang
- State Key Laboratory of Natural Medicines Department of Pharmaceutics China Pharmaceutical University Nanjing 210009 P. R. China
| | - Zhanwei Zhou
- State Key Laboratory of Natural Medicines Department of Pharmaceutics China Pharmaceutical University Nanjing 210009 P. R. China
| | - Minjie Sun
- State Key Laboratory of Natural Medicines Department of Pharmaceutics China Pharmaceutical University Nanjing 210009 P. R. China
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35
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Park SJ, Nam DE, Seong HC, Hahn YS. New Discovery of Myeloid-Derived Suppressor Cell's Tale on Viral Infection and COVID-19. Front Immunol 2022; 13:842535. [PMID: 35185933 PMCID: PMC8850309 DOI: 10.3389/fimmu.2022.842535] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 01/17/2022] [Indexed: 01/08/2023] Open
Abstract
Myeloid-derived suppressor cells (MDSCs) are generated under biological stress such as cancer, inflammatory tissue damage, and viral infection. In recent years, with occurrence of global infectious diseases, new discovery on MDSCs functions has been significantly expanded during viral infection and COVID-19. For a successful viral infection, pathogens viruses develop immune evasion strategies to avoid immune recognition. Numerous viruses induce the differentiation and expansion of MDSCs in order to suppress host immune responses including natural killer cells, antigen presenting cells, and T-cells. Moreover, MDSCs play an important role in regulation of immunopathogenesis by balancing viral infection and tissue damage. In this review article, we describe the overview of immunomodulation and genetic regulation of MDSCs during viral infection in the animal model and human studies. In addition, we include up-to-date review of role of MDSCs in SARS-CoV-2 infection and COVID-19. Finally, we discuss potential therapeutics targeting MDSCs.
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Affiliation(s)
- Soo-Jeung Park
- Beirne B. Carter Center for Immunology Research, University of Virginia, Charlottesville, VA, United States
| | - Da-eun Nam
- Beirne B. Carter Center for Immunology Research, University of Virginia, Charlottesville, VA, United States
| | - Hae Chang Seong
- Beirne B. Carter Center for Immunology Research, University of Virginia, Charlottesville, VA, United States
| | - Young S. Hahn
- Beirne B. Carter Center for Immunology Research, University of Virginia, Charlottesville, VA, United States
- Department of Microbiology, Immunology and Cancer Biology, University of Virginia, Charlottesville, VA, United States
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36
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Abstract
Macrophages have emerged at the forefront of research in immunology and transplantation because of recent advances in basic science. New findings have illuminated macrophage populations not identified previously, expanded upon traditional macrophage phenotypes, and overhauled macrophage ontogeny. These advances have major implications for the field of transplant immunology. Macrophages are known to prime adaptive immune responses, perpetuate T-cell-mediated rejection and antibody-mediated rejection, and promote allograft fibrosis. In this review, macrophage phenotypes and their role in allograft injury of solid organ transplants will be discussed with an emphasis on kidney transplantation. Additionally, consideration will be given to the prospect of manipulating macrophage phenotypes as cell-based therapy. Innate immunity and macrophages represent important players in allograft injury and a promising target to improve transplant outcomes.
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Affiliation(s)
- Sarah E. Panzer
- Department of Medicine, Division of Nephrology, University of Wisconsin, Madison, WI, United States
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37
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Moon D, Tae N, Park Y, Lee SW, Kim DH. Development of Bispecific Antibody for Cancer Immunotherapy: Focus on T Cell Engaging Antibody. Immune Netw 2022; 22:e4. [PMID: 35291652 PMCID: PMC8901699 DOI: 10.4110/in.2022.22.e4] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 02/02/2022] [Accepted: 02/03/2022] [Indexed: 12/01/2022] Open
Abstract
In the era of immunotherapeutic control of cancers, many advances in biotechnology, especially in Ab engineering, have provided multiple new candidates as therapeutic immuno-oncology modalities. Bispecific Abs (BsAbs) that recognize 2 different antigens in one molecule are promising drug candidates and have inspired an upsurge in research in both academia and the pharmaceutical industry. Among several BsAbs, T cell engaging BsAb (TCEB), a new class of therapeutic agents designed to simultaneously bind to T cells and tumor cells via tumor cell specific antigens in immunotherapy, is the most promising BsAb. Herein, we are providing an overview of the current status of the development of TCEBs. The diverse formats and characteristics of TCEBs, in addition to the functional mechanisms of BsAbs are discussed. Several aspects of a new TCEB-Blinatumomab-are reviewed, including the current clinical data, challenges of patient treatment, drawbacks regarding toxicities, and resistance of TCEB therapy. Development of the next generation of TCEBs is also discussed in addition to the comparison of TCEB with current chimeric antigen receptor-T therapy.
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Affiliation(s)
- Dain Moon
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang 37673, Korea
| | - Nara Tae
- Global/Gangwon Innovative Biologics Regional Leading Research Center (GIB-RLRC), Kangwon National University, Chuncheon 24341, Korea
| | - Yunji Park
- Pohang University of Science and Technology (POSTECH) Biotech Center, POSTECH, Pohang 37673, Korea
| | - Seung-Woo Lee
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang 37673, Korea
| | - Dae Hee Kim
- College of Pharmacy, Kangwon National University, Chuncheon 24341, Korea
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38
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Sheida F, Razi S, Keshavarz-Fathi M, Rezaei N. The role of myeloid-derived suppressor cells in lung cancer and targeted immunotherapies. Expert Rev Anticancer Ther 2021; 22:65-81. [PMID: 34821533 DOI: 10.1080/14737140.2022.2011224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
INTRODUCTION Lung cancer is the deadliest cancer in both sexes combined globally due to significant delays in diagnosis and poor survival. Despite advances in the treatment of lung cancer, the overall outcomes remain poor and traditional chemotherapy fails to provide long-term benefits for many patients. Therefore, new treatment strategies are needed to increase overall survival. Myeloid-derived suppressor cells (MDSCs) are immunosuppressive cells taking part in lung cancer, as has been described in other types of tumors. MDSCs immunosuppressive activity is mediated by arginases (ARG-1 and ARG-2), nitric oxide (NO), reactive oxygen species (ROS), peroxynitrite, PD-1/PD-L1 axis, and different cytokines. MDSCs can be a target for lung cancer immunotherapy by inducing their differentiation into mature myeloid cells, elimination, attenuation of their function, and inhibition of their accumulation. AREAS COVERED In this review, the immunosuppressive function of MDSCs, their role in lung cancer, and strategies to target them, which could result in increased efficacy of immunotherapy in patients with lung cancer, are discussed. EXPERT OPINION Identification of important mechanisms and upstream pathways involved in MDSCs functions paves the way for further preclinical and clinical lung cancer research, which could lead to the development of novel therapeutic approaches.
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Affiliation(s)
- Fateme Sheida
- Cancer Immunology Project (CIP), Universal Scientific Education and Research Network (USERN), Tehran, Iran.,Student Research Committee, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Sepideh Razi
- Cancer Immunology Project (CIP), Universal Scientific Education and Research Network (USERN), Tehran, Iran.,School of Medicine, Iran University of Medical Sciences, Tehran, Iran.,Research Center for Immunodeficiencies, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Mahsa Keshavarz-Fathi
- Cancer Immunology Project (CIP), Universal Scientific Education and Research Network (USERN), Tehran, Iran.,Research Center for Immunodeficiencies, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran.,School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Nima Rezaei
- Research Center for Immunodeficiencies, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran.,Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.,Cancer Immunology Project (CIP), Universal Scientific Education and Research Network (USERN), Stockholm, Sweden
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39
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Geeraerts X, Fernández-Garcia J, Hartmann FJ, de Goede KE, Martens L, Elkrim Y, Debraekeleer A, Stijlemans B, Vandekeere A, Rinaldi G, De Rycke R, Planque M, Broekaert D, Meinster E, Clappaert E, Bardet P, Murgaski A, Gysemans C, Nana FA, Saeys Y, Bendall SC, Laoui D, Van den Bossche J, Fendt SM, Van Ginderachter JA. Macrophages are metabolically heterogeneous within the tumor microenvironment. Cell Rep 2021; 37:110171. [DOI: 10.1016/j.celrep.2021.110171] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 08/26/2021] [Accepted: 12/03/2021] [Indexed: 12/13/2022] Open
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40
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Navasardyan I, Bonavida B. Regulation of T Cells in Cancer by Nitric Oxide. Cells 2021; 10:cells10102655. [PMID: 34685635 PMCID: PMC8534057 DOI: 10.3390/cells10102655] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 09/16/2021] [Accepted: 09/25/2021] [Indexed: 12/22/2022] Open
Abstract
The T cell-mediated immune response is primarily involved in the fight against infectious diseases and cancer and its underlying mechanisms are complex. The anti-tumor T cell response is regulated by various T cell subsets and other cells and tissues in the tumor microenvironment (TME). Various mechanisms are involved in the regulation of these various effector cells. One mechanism is the iNOS/.NO that has been reported to be intimately involved in the regulation and differentiation of the various cells that regulate the anti-tumor CD8 T cells. Both endogenous and exogenous .NO are implicated in this regulation. Importantly, the exposure of T cells to .NO had different effects on the immune response, depending on the .NO concentration and time of exposure. For instance, iNOS in T cells regulates activation-induced cell death and inhibits Treg induction. Effector CD8 T cells exposed to .NO result in the upregulation of death receptors and enhance their anti-tumor cytotoxic activity. .NO-Tregs suppress CD4 Th17 cells and their differentiation. Myeloid-derived suppressor cells (MDSCs) expressing iNOS inhibit T cell functions via .NO and inhibit anti-tumor CD8 T cells. Therefore, both .NO donors and .NO inhibitors are potential therapeutics tailored to specific target cells that regulate the T cell effector anti-tumor response.
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41
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Sionov RV. Leveling Up the Controversial Role of Neutrophils in Cancer: When the Complexity Becomes Entangled. Cells 2021; 10:cells10092486. [PMID: 34572138 PMCID: PMC8465406 DOI: 10.3390/cells10092486] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Revised: 09/12/2021] [Accepted: 09/15/2021] [Indexed: 12/13/2022] Open
Abstract
Neutrophils are the most abundant immune cell in the circulation of human and act as gatekeepers to discard foreign elements that have entered the body. They are essential in initiating immune responses for eliminating invaders, such as microorganisms and alien particles, as well as to act as immune surveyors of cancer cells, especially during the initial stages of carcinogenesis and for eliminating single metastatic cells in the circulation and in the premetastatic organs. Since neutrophils can secrete a whole range of factors stored in their many granules as well as produce reactive oxygen and nitrogen species upon stimulation, neutrophils may directly or indirectly affect carcinogenesis in both the positive and negative directions. An intricate crosstalk between tumor cells, neutrophils, other immune cells and stromal cells in the microenvironment modulates neutrophil function resulting in both anti- and pro-tumor activities. Both the anti-tumor and pro-tumor activities require chemoattraction towards the tumor cells, neutrophil activation and ROS production. Divergence is seen in other neutrophil properties, including differential secretory repertoire and membrane receptor display. Many of the direct effects of neutrophils on tumor growth and metastases are dependent on tight neutrophil–tumor cell interactions. Among them, the neutrophil Mac-1 interaction with tumor ICAM-1 and the neutrophil L-selectin interaction with tumor-cell sialomucins were found to be involved in the neutrophil-mediated capturing of circulating tumor cells resulting in increased metastatic seeding. On the other hand, the anti-tumor function of neutrophils was found to rely on the interaction between tumor-surface-expressed receptor for advanced glycation end products (RAGE) and Cathepsin G expressed on the neutrophil surface. Intriguingly, these two molecules are also involved in the promotion of tumor growth and metastases. RAGE is upregulated during early inflammation-induced carcinogenesis and was found to be important for sustaining tumor growth and homing at metastatic sites. Cathepsin G was found to be essential for neutrophil-supported lung colonization of cancer cells. These data level up the complexity of the dual role of neutrophils in cancer.
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Affiliation(s)
- Ronit Vogt Sionov
- Hadassah Medical School, The Hebrew University of Jerusalem, Ein Kerem Campus, P.O.B. 12272, Jerusalem 9112102, Israel
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42
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Stokowa-Sołtys K, Wojtkowiak K, Jagiełło K. Fusobacterium nucleatum - Friend or foe? J Inorg Biochem 2021; 224:111586. [PMID: 34425476 DOI: 10.1016/j.jinorgbio.2021.111586] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 08/13/2021] [Accepted: 08/15/2021] [Indexed: 01/16/2023]
Abstract
Fusobacterium nucleatum (F. nucleatum) is one of the most abundant Gram-negative anaerobic bacteria, part of the gut, and oral commensal flora, generally found in human dental plaque. Its presence could be associated with various human diseases, including, e.g., periodontal, angina, lung and gynecological abscesses. This bacteria can enter the blood circulation as a result of periodontal infection. It was proven that F. nucleatum migrates from its primary site of colonization in the oral cavity to other parts of the body. It could cause numerous diseases, including cancers. On the other hand, it was shown that Fusobacterium produces significant amounts of butyric acid, which is a great source of energy for colonocytes (anti-inflammatory cells). Therefore, it is very interesting to get to know the two faces of F. nucleatum.
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Affiliation(s)
- Kamila Stokowa-Sołtys
- Faculty of Chemistry, University of Wroclaw, F. Joliot-Curie 14, 50-383 Wroclaw, Poland.
| | - Kamil Wojtkowiak
- Faculty of Chemistry, University of Wroclaw, F. Joliot-Curie 14, 50-383 Wroclaw, Poland
| | - Karolina Jagiełło
- Faculty of Chemistry, University of Wroclaw, F. Joliot-Curie 14, 50-383 Wroclaw, Poland
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43
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Oweida A, Paquette B. Reconciling two opposing effects of radiation therapy: stimulation of cancer cell invasion and activation of anti-cancer immunity. Int J Radiat Biol 2021; 99:951-963. [PMID: 34264178 DOI: 10.1080/09553002.2021.1956005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
PURPOSE The damage caused by radiation therapy to cancerous and normal cells inevitably leads to changes in the secretome profile of pro and anti-inflammatory mediators. The inflammatory response depends on the dose of radiation and its fractionation, while the inherent radiosensitivity of each patient dictates the intensity and types of adverse reactions. This review will present an overview of two apparently opposite reactions that may occur after radiation treatment: induction of an antitumor immune response and a protumoral response. Emphasis is placed on the molecular and cellular mechanisms involved. CONCLUSIONS By understanding how radiation changes the balance between anti- and protumoral effects, these forces can be manipulated to optimize radiation oncology treatments.
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Affiliation(s)
- Ayman Oweida
- Department of Nuclear Medicine and Radiobiology, Faculty of Medicine and Health Sciences, Universite de Sherbrooke, Sherbrooke, Canada
| | - Benoit Paquette
- Department of Nuclear Medicine and Radiobiology, Faculty of Medicine and Health Sciences, Universite de Sherbrooke, Sherbrooke, Canada
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44
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Martí I Líndez AA, Reith W. Arginine-dependent immune responses. Cell Mol Life Sci 2021; 78:5303-5324. [PMID: 34037806 PMCID: PMC8257534 DOI: 10.1007/s00018-021-03828-4] [Citation(s) in RCA: 85] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 03/23/2021] [Accepted: 03/29/2021] [Indexed: 02/07/2023]
Abstract
A growing body of evidence indicates that, over the course of evolution of the immune system, arginine has been selected as a node for the regulation of immune responses. An appropriate supply of arginine has long been associated with the improvement of immune responses. In addition to being a building block for protein synthesis, arginine serves as a substrate for distinct metabolic pathways that profoundly affect immune cell biology; especially macrophage, dendritic cell and T cell immunobiology. Arginine availability, synthesis, and catabolism are highly interrelated aspects of immune responses and their fine-tuning can dictate divergent pro-inflammatory or anti-inflammatory immune outcomes. Here, we review the organismal pathways of arginine metabolism in humans and rodents, as essential modulators of the availability of this semi-essential amino acid for immune cells. We subsequently review well-established and novel findings on the functional impact of arginine biosynthetic and catabolic pathways on the main immune cell lineages. Finally, as arginine has emerged as a molecule impacting on a plethora of immune functions, we integrate key notions on how the disruption or perversion of arginine metabolism is implicated in pathologies ranging from infectious diseases to autoimmunity and cancer.
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Affiliation(s)
| | - Walter Reith
- Department of Pathology and Immunology, Faculty of Medicine, University of Geneva, Geneva, Switzerland
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Takacs GP, Flores-Toro JA, Harrison JK. Modulation of the chemokine/chemokine receptor axis as a novel approach for glioma therapy. Pharmacol Ther 2021; 222:107790. [PMID: 33316289 PMCID: PMC8122077 DOI: 10.1016/j.pharmthera.2020.107790] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Accepted: 12/04/2020] [Indexed: 02/06/2023]
Abstract
Chemokines are a large subfamily of cytokines known for their ability to facilitate cell migration, most notably leukocytes, throughout the body. Chemokines are necessary for a functioning immune system in both health and disease and have received considerable attention for their roles in orchestrating temporal-spatial regulation of immune cell populations in cancer. Gliomas comprise a group of common central nervous system (CNS) primary tumors that are extremely challenging to treat. Immunotherapy approaches for highly malignant brain tumors offer an exciting new avenue for therapeutic intervention but so far, have seen limited successful clinical outcomes. Herein we focus on important chemokine/chemokine receptor systems in the regulation of pro- and anti-tumor mechanisms, highlighting potential therapeutic advantages of modulating these systems in malignant gliomas and other cancers.
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Affiliation(s)
- Gregory P Takacs
- Department of Pharmacology & Therapeutics, College of Medicine, University of Florida, Gainesville, FL 32610, USA
| | - Joseph A Flores-Toro
- Department of Pharmacology & Therapeutics, College of Medicine, University of Florida, Gainesville, FL 32610, USA
| | - Jeffrey K Harrison
- Department of Pharmacology & Therapeutics, College of Medicine, University of Florida, Gainesville, FL 32610, USA.
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46
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Croce M, Damonte P, Morini M, Pigozzi S, Chiossone L, Vacca P, Bronte V, Barbieri O, Astigiano S. Increased Arginase1 expression in tumor microenvironment promotes mammary carcinogenesis via multiple mechanisms. Carcinogenesis 2021; 41:1695-1702. [PMID: 32614387 DOI: 10.1093/carcin/bgaa063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 05/29/2020] [Accepted: 06/19/2020] [Indexed: 12/14/2022] Open
Abstract
Arginine metabolism plays a significant role in regulating cell function, affecting tumor growth and metastatization. To study the effect of the arginine-catabolizing enzyme Arginase1 (ARG1) on tumor microenvironment, we generated a mouse model of mammary carcinogenesis by crossbreeding a transgenic mouse line overexpressing ARG1 in macrophages (FVBArg+/+) with the MMTV-Neu mouse line (FVBNeu+/+). This double transgenic line (FVBArg+/-;Neu+/+) showed a significant shortening in mammary tumor latency, and an increase in the number of mammary nodules. Transfer of tumor cells from FVBNeu+/+ into either FVB wild type or FVBArg+/+ mice resulted in increase regulatory T cells in the tumor infiltrate, suggestive of an impaired antitumor immune response. However, we also found increased frequency of tumor stem cells in tumors from FVBArg+/-;Neu+/+ transgenic compared with FVBNeu+/+ mice, suggesting that increased arginine metabolism in mammary tumor microenvironment may supports the cancer stem cells niche. We provide in vivo evidence of a novel, yet unexploited, mechanism through which ARG1 may contribute to tumor development.
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MESH Headings
- Animals
- Apoptosis
- Arginase/genetics
- Arginase/metabolism
- Cell Proliferation
- Cell Transformation, Neoplastic/genetics
- Cell Transformation, Neoplastic/immunology
- Cell Transformation, Neoplastic/metabolism
- Cell Transformation, Neoplastic/pathology
- Female
- Humans
- Mammary Neoplasms, Experimental/genetics
- Mammary Neoplasms, Experimental/immunology
- Mammary Neoplasms, Experimental/metabolism
- Mammary Neoplasms, Experimental/pathology
- Mice
- Mice, Transgenic
- Tumor Cells, Cultured
- Tumor Microenvironment/immunology
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Affiliation(s)
- Michela Croce
- Department of Scientific Direction, IRCCS Ospedale Policlinico San Martino, L.go Rosanna Benzi 10, Genova, Italy
| | - Patrizia Damonte
- University of Genova, Department of Experimental Medicine, Via L.B. Alberti, Genova, Italy
| | - Monica Morini
- University of Genova, Department of Experimental Medicine, Via L.B. Alberti, Genova, Italy
| | - Simona Pigozzi
- University of Genova, Department of Surgical Science and Integrated Diagnostics, Genova, Italy
| | - Laura Chiossone
- University of Genova, Department of Experimental Medicine, Via L.B. Alberti, Genova, Italy
| | - Paola Vacca
- University of Genova, Department of Experimental Medicine, Via L.B. Alberti, Genova, Italy
| | - Vincenzo Bronte
- Verona University Hospital, Department of Medicine, Section of Immunology, Verona, Italy
| | - Ottavia Barbieri
- University of Genova, Department of Experimental Medicine, Via L.B. Alberti, Genova, Italy
| | - Simonetta Astigiano
- Department of Scientific Direction, IRCCS Ospedale Policlinico San Martino, L.go Rosanna Benzi 10, Genova, Italy
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47
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Myeloid-derived suppressor cells regulate the immunosuppressive functions of PD-1 -PD-L1 + Bregs through PD-L1/PI3K/AKT/NF-κB axis in breast cancer. Cell Death Dis 2021; 12:465. [PMID: 33967272 PMCID: PMC8107179 DOI: 10.1038/s41419-021-03745-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Revised: 04/20/2021] [Accepted: 04/21/2021] [Indexed: 12/24/2022]
Abstract
Myeloid-derived suppressor cells (MDSCs) are a heterogeneous group of myeloid cells that are closely related to tumor immune escape, but the mechanism by which MDSCs regulate B cells has not been elucidated. Our previous studies revealed that breast cancer-derived MDSCs could induce a group of PD-1-PD-L1+ Bregs with immunosuppressive functions. Here, we reported that blocking PD-1/PD-L1 interaction between MDSCs and B cells could reverse the immunosuppressive functions of PD-1-PD-L1+ Bregs. The activation of PI3K/AKT/NF-κB signaling pathway is essential for PD-1-PD-L1+ Bregs to exert immunosuppressive effects. MDSCs activated the PI3K/AKT/NF-κB pathway in B cells via the PD-1/PD-L1 axis. Furthermore, inhibition of PD-1/PD-L1 or PI3K/AKT signaling suppressed both tumor growth and the immunosuppressive functions of PD-1-PD-L1+ Bregs. Dual suppression of PD-1/PD-L1 and PI3K/AKT exerted better antitumor effect. Finally, MDSCs and PD-1-PD-L1+ Bregs were colocalized in breast cancer tissues and PD-1-PD-L1+ Bregs were positively correlated with poor prognosis. Thus, MDSC-educated PD-1-PD-L1+ Bregs and their regulatory mechanisms could contribute to the immunosuppressive tumor microenvironment. Our study proposes a novel mechanism for MDSC-mediated regulation of B cell immunity, which might shed new light on tumor immunotherapy.
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48
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Rahman M, Sawyer WG, Lindhorst S, Deleyrolle LP, Harrison JK, Karachi A, Dastmalchi F, Flores-Toro J, Mitchell DA, Lim M, Gilbert MR, Reardon DA. Adult immuno-oncology: using past failures to inform the future. Neuro Oncol 2021; 22:1249-1261. [PMID: 32391559 DOI: 10.1093/neuonc/noaa116] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
In oncology, "immunotherapy" is a broad term encompassing multiple means of utilizing the patient's immune system to combat malignancy. Prominent among these are immune checkpoint inhibitors, cellular therapies including chimeric antigen receptor T-cell therapy, vaccines, and oncolytic viruses. Immunotherapy for glioblastoma (GBM) has had mixed results in early trials. In this context, the past, present, and future of immune oncology for the treatment of GBM was discussed by clinical, research, and thought leaders as well as patient advocates at the first annual Remission Summit in 2019. The goal was to use current knowledge (published and unpublished) to identify possible causes of treatment failures and the best strategies to advance immunotherapy as a treatment modality for patients with GBM. The discussion focuses on past failures, current limitations, failure analyses, and proposed best practices moving forward.
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Affiliation(s)
- Maryam Rahman
- Department of Neurosurgery, Preston A. Wells Jr. Center for Brain Tumor Therapy, University of Florida, Gainesville, Florida
| | - W Gregory Sawyer
- Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, Florida
| | - Scott Lindhorst
- Department of Neurosurgery, Medical University of South Carolina, Charleston, South Carolina
| | - Loic P Deleyrolle
- Department of Neurosurgery, Preston A. Wells Jr. Center for Brain Tumor Therapy, University of Florida, Gainesville, Florida
| | - Jeffrey K Harrison
- Department of Pharmacology and Therapeutics, Preston A. Wells Jr. Center for Brain Tumor Therapy, University of Florida, Gainesville, Florida
| | - Aida Karachi
- Department of Neurosurgery, Preston A. Wells Jr. Center for Brain Tumor Therapy, University of Florida, Gainesville, Florida
| | - Farhad Dastmalchi
- Department of Neurosurgery, Preston A. Wells Jr. Center for Brain Tumor Therapy, University of Florida, Gainesville, Florida
| | - Joseph Flores-Toro
- Department of Pharmacology and Therapeutics, Preston A. Wells Jr. Center for Brain Tumor Therapy, University of Florida, Gainesville, Florida
| | - Duane A Mitchell
- Department of Neurosurgery, Preston A. Wells Jr. Center for Brain Tumor Therapy, University of Florida, Gainesville, Florida
| | - Michael Lim
- Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Mark R Gilbert
- Center for Cancer Research, National Cancer Institute, Bethesda, Maryland
| | - David A Reardon
- Dana-Farber Cancer Institute, Harvard University School of Medicine, Boston, Massachusetts
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49
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Chen Y, Kim J, Yang S, Wang H, Wu CJ, Sugimoto H, LeBleu VS, Kalluri R. Type I collagen deletion in αSMA + myofibroblasts augments immune suppression and accelerates progression of pancreatic cancer. Cancer Cell 2021; 39:548-565.e6. [PMID: 33667385 PMCID: PMC8423173 DOI: 10.1016/j.ccell.2021.02.007] [Citation(s) in RCA: 265] [Impact Index Per Article: 88.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Revised: 11/23/2020] [Accepted: 02/10/2021] [Indexed: 12/11/2022]
Abstract
Stromal desmoplastic reaction in pancreatic ductal adenocarcinoma (PDAC) involves significant accumulation of type I collagen (Col1). However, the precise molecular and mechanistic contribution of Col1 in PDAC progression remains unknown. Activated pancreatic stellate cells/αSMA+ myofibroblasts are major contributors of Col1 in the PDAC stroma. We use a dual-recombinase genetic mouse model of spontaneous PDAC to delete Col1 specifically in myofibroblasts. This results in significant reduction of total stromal Col1 content and accelerates the emergence of PanINs and PDAC, decreasing overall survival. Col1 deletion leads to Cxcl5 upregulation in cancer cells via SOX9. Increase in Cxcl5 is associated with recruitment of myeloid-derived suppressor cells and suppression of CD8+ T cells, which can be attenuated with combined targeting of CXCR2 and CCR2 to restrain accelerated PDAC progression in the setting of stromal Col1 deletion. Our results unravel the fundamental role of myofibroblast-derived Co1l in regulating tumor immunity and restraining PDAC progression.
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Affiliation(s)
- Yang Chen
- Department of Cancer Biology, University of Texas MD Anderson Cancer Center, Houston, TX 77054, USA
| | - Jiha Kim
- Department of Cancer Biology, University of Texas MD Anderson Cancer Center, Houston, TX 77054, USA
| | - Sujuan Yang
- Department of Cancer Biology, University of Texas MD Anderson Cancer Center, Houston, TX 77054, USA
| | - Huamin Wang
- Department of Anatomical Pathology, University of Texas MD Anderson Cancer Center, Houston, TX 77054, USA
| | - Chang-Jiun Wu
- Department of Genomic Medicine, University of Texas MD Anderson Cancer Center, Houston, TX 77054, USA
| | - Hikaru Sugimoto
- Department of Cancer Biology, University of Texas MD Anderson Cancer Center, Houston, TX 77054, USA
| | - Valerie S LeBleu
- Department of Cancer Biology, University of Texas MD Anderson Cancer Center, Houston, TX 77054, USA
| | - Raghu Kalluri
- Department of Cancer Biology, University of Texas MD Anderson Cancer Center, Houston, TX 77054, USA.
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50
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Dwyer GK, Turnquist HR. Untangling Local Pro-Inflammatory, Reparative, and Regulatory Damage-Associated Molecular-Patterns (DAMPs) Pathways to Improve Transplant Outcomes. Front Immunol 2021; 12:611910. [PMID: 33708206 PMCID: PMC7940545 DOI: 10.3389/fimmu.2021.611910] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Accepted: 01/05/2021] [Indexed: 12/28/2022] Open
Abstract
Detrimental inflammatory responses after solid organ transplantation are initiated when immune cells sense pathogen-associated molecular patterns (PAMPs) and certain damage-associated molecular patterns (DAMPs) released or exposed during transplant-associated processes, such as ischemia/reperfusion injury (IRI), surgical trauma, and recipient conditioning. These inflammatory responses initiate and propagate anti-alloantigen (AlloAg) responses and targeting DAMPs and PAMPs, or the signaling cascades they activate, reduce alloimmunity, and contribute to improved outcomes after allogeneic solid organ transplantation in experimental studies. However, DAMPs have also been implicated in initiating essential anti-inflammatory and reparative functions of specific immune cells, particularly Treg and macrophages. Interestingly, DAMP signaling is also involved in local and systemic homeostasis. Herein, we describe the emerging literature defining how poor outcomes after transplantation may result, not from just an over-abundance of DAMP-driven inflammation, but instead an inadequate presence of a subset of DAMPs or related molecules needed to repair tissue successfully or re-establish tissue homeostasis. Adverse outcomes may also arise when these homeostatic or reparative signals become dysregulated or hijacked by alloreactive immune cells in transplant niches. A complete understanding of the critical pathways controlling tissue repair and homeostasis, and how alloimmune responses or transplant-related processes disrupt these will lead to new immunotherapeutics that can prevent or reverse the tissue pathology leading to lost grafts due to chronic rejection.
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Affiliation(s)
- Gaelen K Dwyer
- Departments of Surgery and Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States.,Thomas E. Starzl Transplantation Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States
| | - Hēth R Turnquist
- Departments of Surgery and Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States.,Thomas E. Starzl Transplantation Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States.,McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, United States
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