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Groth C, Weber R, Lasser S, Özbay FG, Kurzay A, Petrova V, Altevogt P, Utikal J, Umansky V. Tumor promoting capacity of polymorphonuclear myeloid-derived suppressor cells and their neutralization. Int J Cancer 2021; 149:1628-1638. [PMID: 34224592 DOI: 10.1002/ijc.33731] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 06/16/2021] [Accepted: 06/17/2021] [Indexed: 12/17/2022]
Abstract
Myeloid-derived suppressor cells (MDSC) represent a highly immunosuppressive population that expands in tumor bearing hosts and inhibits both T and NK cell antitumor effector functions. Among MDSC subpopulations, the polymorphonuclear (PMN) one is gaining increasing interest since it is a predominant MDSC subset in most cancer entities and inherits unique properties to facilitate metastatic spread. In addition, further improvement in distinguishing PMN-MDSC from neutrophils has contributed to the design of novel therapeutic approaches. In this review, we summarize the current view on the origin of PMN-MDSC and their relation to classical neutrophils. Furthermore, we outline the metastasis promoting features of these cells and promising strategies of their targeting to improve the efficacy of cancer immunotherapy.
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Affiliation(s)
- Christopher Groth
- Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, Ruprecht-Karl University of Heidelberg, Mannheim, Germany.,Mannheim Institute for Innate Immunoscience (MI3), Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany.,Department for Immunobiochemistry, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.,European Center for Angioscience (ECAS), Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Rebekka Weber
- Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, Ruprecht-Karl University of Heidelberg, Mannheim, Germany.,Mannheim Institute for Innate Immunoscience (MI3), Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Samantha Lasser
- Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, Ruprecht-Karl University of Heidelberg, Mannheim, Germany.,Mannheim Institute for Innate Immunoscience (MI3), Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany.,Faculty of Biosciences, Ruprecht-Karl University of Heidelberg, Heidelberg, Germany
| | - Feyza Gül Özbay
- Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, Ruprecht-Karl University of Heidelberg, Mannheim, Germany.,Mannheim Institute for Innate Immunoscience (MI3), Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany.,Faculty of Biosciences, Ruprecht-Karl University of Heidelberg, Heidelberg, Germany
| | - Annina Kurzay
- Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, Ruprecht-Karl University of Heidelberg, Mannheim, Germany.,Faculty of Biosciences, Ruprecht-Karl University of Heidelberg, Heidelberg, Germany
| | - Vera Petrova
- Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, Ruprecht-Karl University of Heidelberg, Mannheim, Germany.,Mannheim Institute for Innate Immunoscience (MI3), Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Peter Altevogt
- Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, Ruprecht-Karl University of Heidelberg, Mannheim, Germany.,Mannheim Institute for Innate Immunoscience (MI3), Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Jochen Utikal
- Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, Ruprecht-Karl University of Heidelberg, Mannheim, Germany
| | - Viktor Umansky
- Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, Ruprecht-Karl University of Heidelberg, Mannheim, Germany.,Mannheim Institute for Innate Immunoscience (MI3), Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
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Mollaei M, Hassan ZM, Khorshidi F, Langroudi L. Chemotherapeutic drugs: Cell death- and resistance-related signaling pathways. Are they really as smart as the tumor cells? Transl Oncol 2021; 14:101056. [PMID: 33684837 PMCID: PMC7938256 DOI: 10.1016/j.tranon.2021.101056] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 02/05/2021] [Accepted: 02/22/2021] [Indexed: 02/07/2023] Open
Abstract
Chemotherapeutic drugs kill cancer cells or control their progression all over the patient's body, while radiation- and surgery-based treatments perform in a particular site. Based on their mechanisms of action, they are classified into different groups, including alkylating substrates, antimetabolite agents, anti-tumor antibiotics, inhibitors of topoisomerase I and II, mitotic inhibitors, and finally, corticosteroids. Although chemotherapeutic drugs have brought about more life expectancy, two major and severe complications during chemotherapy are chemoresistance and tumor relapse. Therefore, we aimed to review the underlying intracellular signaling pathways involved in cell death and resistance in different chemotherapeutic drug families to clarify the shortcomings in the conventional single chemotherapy applications. Moreover, we have summarized the current combination chemotherapy applications, including numerous combined-, and encapsulated-combined-chemotherapeutic drugs. We further discussed the possibilities and applications of precision medicine, machine learning, next-generation sequencing (NGS), and whole-exome sequencing (WES) in promoting cancer immunotherapies. Finally, some of the recent clinical trials concerning the application of immunotherapies and combination chemotherapies were included as well, in order to provide a practical perspective toward the future of therapies in cancer cases.
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Affiliation(s)
- Mojtaba Mollaei
- Department of Immunology, School of Medicine, Tarbiat Modares University, Tehran, Iran.
| | | | - Fatemeh Khorshidi
- Department of Immunology, School of Medicine, Tarbiat Modares University, Tehran, Iran; Department of Immunology, Pasteur Institute of Iran, Tehran, Iran
| | - Ladan Langroudi
- Department of Immunology, School of Medicine, Kerman University of Medical Sciences, Kerman, Iran
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53
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Mandula JK, Rodriguez PC. Tumor-related stress regulates functional plasticity of MDSCs. Cell Immunol 2021; 363:104312. [PMID: 33652258 PMCID: PMC8026602 DOI: 10.1016/j.cellimm.2021.104312] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 01/15/2021] [Accepted: 01/29/2021] [Indexed: 12/15/2022]
Abstract
Myeloid-derived suppressor cells (MDSCs) impair protective anti-tumor immunity and remain major obstacles that stymie the effectiveness of promising cancer therapies. Diverse tumor-derived stressors galvanize the differentiation, intra-tumoral expansion, and immunomodulatory function of MDSCs. These tumor-associated 'axes of stress' underwrite the immunosuppressive programming of MDSCs in cancer and contribute to the phenotypic/functional heterogeneity that characterize tumor-MDSCs. This review discusses various tumor-associated axes of stress that direct MDSC development, accumulation, and immunosuppressive function, as well as current strategies aimed at overcoming the detrimental impact of MDSCs in cancer. To better understand the constellation of signals directing MDSC biology, we herein summarize the pivotal roles, signaling mediators, and effects of reactive oxygen/nitrogen species-related stress, chronic inflammatory stress, hypoxia-linked stress, endoplasmic reticulum stress, metabolic stress, and therapy-associated stress on MDSCs. Although therapeutic targeting of these processes remains mostly pre-clinical, intercepting signaling through the axes of stress could overcome MDSC-related immune suppression in tumor-bearing hosts.
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Affiliation(s)
- Jessica K Mandula
- Department of Immunology, H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL 33612, USA
| | - Paulo C Rodriguez
- Department of Immunology, H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL 33612, USA.
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54
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Sharma V, Aggarwal A, Jacob J, Sahni D. Myeloid-derived suppressor cells: Bridging the gap between inflammation and pancreatic adenocarcinoma. Scand J Immunol 2021; 93:e13021. [PMID: 33455004 DOI: 10.1111/sji.13021] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 01/09/2021] [Accepted: 01/10/2021] [Indexed: 12/29/2022]
Abstract
Pancreatic cancer has been identified as one of the deadliest malignancies because it remains asymptomatic and usually presents in the advanced stage. Tumour immune evasion is a well-known mechanism of tumorigenesis in various forms of human malignancies. Chronic inflammation via complex networking of various inflammatory cytokines in the local tissue microenvironment dysregulates the immune system and support tumour development. Pro-inflammatory mediators present in the tumour microenvironment increase the tumour burden by causing immune suppression through the generation of myeloid-derived suppressor cells (MDSCs) and T regulatory cells. These cells, along-with myofibroblasts, create a highly immunosuppressive and resistant tumour microenvironment and are thus considered as one of the culprits for the failure of anti-cancer chemotherapies in pancreatic adenocarcinoma patients. Targeting these MDSCs using various combinatorial approaches might have the potential for abrogating the resistance and suppressive nature of the pancreatic tumour microenvironment. Therefore, there is more curiosity in studying the crosstalk of MDSCs with other immune cells during pathological conditions and the underlying mechanisms of immunosuppression in the current scenario. In this article, the possible role of MDSCs in inflammation-mediated tumour progression of pancreatic adenocarcinoma has been discussed.
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Affiliation(s)
- Vinit Sharma
- Department of Anatomy, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Anjali Aggarwal
- Department of Anatomy, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Justin Jacob
- Department of Anatomy, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Daisy Sahni
- Department of Anatomy, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
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55
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Bagherifar R, Kiaie SH, Hatami Z, Ahmadi A, Sadeghnejad A, Baradaran B, Jafari R, Javadzadeh Y. Nanoparticle-mediated synergistic chemoimmunotherapy for tailoring cancer therapy: recent advances and perspectives. J Nanobiotechnology 2021; 19:110. [PMID: 33865432 PMCID: PMC8052859 DOI: 10.1186/s12951-021-00861-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Accepted: 04/09/2021] [Indexed: 12/15/2022] Open
Abstract
Nowadays, a potent challenge in cancer treatment is considered the lack of efficacious strategy, which has not been able to significantly reduce mortality. Chemoimmunotherapy (CIT) as a promising approach in both for the first-line and relapsed therapy demonstrated particular benefit from two key gating strategies, including chemotherapy and immunotherapy to cancer therapy; therefore, the discernment of their participation and role of potential synergies in CIT approach is determinant. In this study, in addition to balancing the pros and cons of CIT with the challenges of each of two main strategies, the recent advances in the cancer CIT have been discussed. Additionally, immunotherapeutic strategies and the immunomodulation effect induced by chemotherapy, which boosts CIT have been brought up. Finally, harnessing and development of the nanoparticles, which mediated CIT have expatiated in detail.
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Affiliation(s)
- Rafieh Bagherifar
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
- Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Seyed Hossein Kiaie
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
- Nano Drug Delivery Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Zahra Hatami
- Department of Immunology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Armin Ahmadi
- Department of Chemical & Materials Engineering, The University of Alabama in Huntsville, Huntsville, AL, 35899, USA
| | | | - Behzad Baradaran
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Reza Jafari
- Solid Tumor Research Center, Cellular and Molecular Medicine Institute, Urmia University of Medical Sciences, Shafa St, Ershad Blvd., P.O. BoX: 1138, 57147, Urmia, Iran.
- Department of Immunology and Genetics, School of Medicine, Urmia University of Medical Sciences, Urmia, Iran.
| | - Yousef Javadzadeh
- Biotechnology Research Center, and Faculty of Pharmacy, Tabriz University of Medical Science, 5166-15731, Tabriz, Iran.
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56
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Xu Y, Du J, Wang Y, Gong B, Wang Y, Qian L, Tan Y. A Highly Responsive Pancreatic Ductal Adenocarcinoma with Liver Metastasis: A Rare Case Report. Int J Gen Med 2021; 14:487-496. [PMID: 33623421 PMCID: PMC7896765 DOI: 10.2147/ijgm.s293806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 01/27/2021] [Indexed: 12/24/2022] Open
Abstract
Background Pancreatic ductal adenocarcinoma (PDAC) is one of the most refractory and lethal cancer. The overall survival is dismal due to the high frequency of recurrence and metastasis after surgery and resistance to chemotherapy. Patients with the locally advanced or metastatic disease usually have the poorest prognosis. Herein, we report a rare highly responsive PDAC with liver metastasis. Case Presentation A 49-year-old female presented with dull abdominal and back pain, discomfort after eating, fatigue, and recent weight loss of 5 kg. Clinical examination was normal and no relevant oncological history was observed. A routine blood test showed low red blood cell count and low hemoglobin level. Markedly increased carcinoembryonic antigen (CEA) and carbohydrate antigen (CA) 125 levels were detected. Computer tomography (CT) of the abdomen revealed a massive pancreatic tumor with the invasion of almost all important surrounding blood vessels and liver metastasis. After the genetic test and percutaneous biopsy for this tumor, a multidisciplinary team (MDT) discussion was initiated. Subsequently, oral chemotherapy (S-1) and 125I radiative seeds implantation were recommended. Surprisingly, the tumor shrank significantly after treatment. On August 14, 2019, pancreatoduodenectomy was performed. The tumor was successfully resected and liver metastasis was not detected. Based on the postoperative histopathological result, there was only fibrous tissue hyperplasia and inflammatory cell infiltration. Besides, no tumor tissue was found. Until now, through outpatient follow-up, no signs of recurrence and metastasis have been observed. Conclusion Although the therapeutic efficacy and prognosis of PDAC are dismal, we successfully cured a patient with a metastatic disease through multidisciplinary cooperation. However, the therapeutic experience should be summarized and further research should be performed to confirm whether it is appropriate for other PDAC patients.
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Affiliation(s)
- Yixin Xu
- Department of General Surgery, Changzhou Wujin People's Hospital Affiliated to Jiangsu University; The Wujin Clinical College of Xuzhou Medical University, Changzhou, Jiangsu, People's Republic of China
| | - Jianguo Du
- Department of General Surgery, Changzhou Wujin People's Hospital Affiliated to Jiangsu University; The Wujin Clinical College of Xuzhou Medical University, Changzhou, Jiangsu, People's Republic of China
| | - Yibo Wang
- Department of General Surgery, Changzhou Wujin People's Hospital Affiliated to Jiangsu University; The Wujin Clinical College of Xuzhou Medical University, Changzhou, Jiangsu, People's Republic of China
| | - Bo Gong
- Department of Imaging, Changzhou Wujin People's Hospital Affiliated to Jiangsu University; The Wujin Clinical College of Xuzhou Medical University, Changzhou, Jiangsu, People's Republic of China
| | - Yue Wang
- Department of Oncology, Changzhou Wujin People's Hospital Affiliated to Jiangsu University; The Wujin Clinical College of Xuzhou Medical University, Changzhou, Jiangsu, People's Republic of China
| | - Leiming Qian
- Department of Pathology, Changzhou Wujin People's Hospital Affiliated to Jiangsu University; The Wujin Clinical College of Xuzhou Medical University, Changzhou, Jiangsu, People's Republic of China
| | - Yulin Tan
- Department of General Surgery, Changzhou Wujin People's Hospital Affiliated to Jiangsu University; The Wujin Clinical College of Xuzhou Medical University, Changzhou, Jiangsu, People's Republic of China
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57
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Gao X, Sui H, Zhao S, Gao X, Su Y, Qu P. Immunotherapy Targeting Myeloid-Derived Suppressor Cells (MDSCs) in Tumor Microenvironment. Front Immunol 2021; 11:585214. [PMID: 33613512 PMCID: PMC7889583 DOI: 10.3389/fimmu.2020.585214] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 12/17/2020] [Indexed: 12/11/2022] Open
Abstract
Myeloid-derived suppressor cells (MDSCs) are a heterogeneous population of immature myeloid cells that accumulate in tumor-bearing hosts to reduce T cells activity and promote tumor immune escape in the tumor microenvironment (TME). The immune system in the TME can be stimulated to elicit an anti-tumor immune response through immunotherapy. The main theory of immunotherapy resides on the plasticity of the immune system and its capacity to be re-educated into a potent anti-tumor response. Thus, MDSCs within the TME became one of the major targets to improve the efficacy of tumor immunotherapy, and therapeutic strategies for tumor MDSCs were developed in the last few years. In the article, we analyzed the function of tumor MDSCs and the regulatory mechanisms of agents targeting MDSCs in tumor immunotherapy, and reviewed their therapeutic effects in MDSCs within the TME. Those data focused on discussing how to promote the differentiation and maturation of MDSCs, reduce the accumulation and expansion of MDSCs, and inhibit the function, migration and recruitment of MDSCs, further preventing the growth, invasion and metastasis of tumor. Those investigations may provide new directions for cancer therapy.
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Affiliation(s)
- Xidan Gao
- Department of Histology and Embryology, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, China
| | - Hongshu Sui
- Department of Histology and Embryology, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, China
| | - Shang Zhao
- Department of Pathophysiology, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, China
| | - Xingmei Gao
- Department of Neurology, People's Hospital of Binzhou, Binzhou, China
| | - Yanping Su
- Department of Histology and Embryology, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, China
| | - Peng Qu
- Center for Cancer Research, National Cancer Institute, Frederick, MD, United States
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58
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Jiang L, Jung S, Zhao J, Kasinath V, Ichimura T, Joseph J, Fiorina P, Liss AS, Shah K, Annabi N, Joshi N, Akama TO, Bromberg JS, Kobayashi M, Uchimura K, Abdi R. Simultaneous targeting of primary tumor, draining lymph node, and distant metastases through high endothelial venule-targeted delivery. NANO TODAY 2021; 36:101045. [PMID: 33391389 PMCID: PMC7774643 DOI: 10.1016/j.nantod.2020.101045] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Cancer patients with malignant involvement of tumor-draining lymph nodes (TDLNs) and distant metastases have the poorest prognosis. A drug delivery platform that targets the primary tumor, TDLNs, and metastatic niches simultaneously, remains to be developed. Here, we generated a novel monoclonal antibody (MHA112) against peripheral node addressin (PNAd), a family of glycoproteins expressed on high endothelial venules (HEVs), which are present constitutively in the lymph nodes (LNs) and formed ectopically in the tumor stroma. MHA112 was endocytosed by PNAd-expressing cells, where it passed through the lysosomes. MHA112 conjugated antineoplastic drug Paclitaxel (Taxol) (MHA112-Taxol) delivered Taxol effectively to the HEV-containing tumors, TDLNs, and metastatic lesions. MHA112-Taxol treatment significantly reduced primary tumor size as well as metastatic lesions in a number of mouse and human tumor xenografts tested. These data, for the first time, indicate that human metastatic lesions contain HEVs and provide a platform that permits simultaneous targeted delivery of antineoplastic drugs to the three key sites of primary tumor, TDLNs, and metastases.
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Affiliation(s)
- Liwei Jiang
- Transplantation Research Center, Renal Division, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Sungwook Jung
- Transplantation Research Center, Renal Division, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Jing Zhao
- Transplantation Research Center, Renal Division, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Vivek Kasinath
- Transplantation Research Center, Renal Division, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Takaharu Ichimura
- Renal Division, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - John Joseph
- Center for Nanomedicine, Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Paolo Fiorina
- Division of Nephrology, Boston Children’s Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Andrew S. Liss
- Department of Surgery and the Andrew L. Warshaw, MD Institute for Pancreatic Cancer Research, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Khalid Shah
- Center for Stem Cell Therapeutics and Imaging, Department of Neurosurgery, Brigham and Women’s Hospital, Harvard medical School, Boston, MA, 02115, USA
| | - Nasim Annabi
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, CA, 90095, USA
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Nitin Joshi
- Center for Nanomedicine, Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Tomoya O. Akama
- Department of Pharmacology, Kansai Medical University, Osaka, 570-8506, Japan
| | - Jonathan S. Bromberg
- Departments of Surgery and Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Motohiro Kobayashi
- Department of Tumor Pathology, Faculty of Medical Sciences, University of Fukui, Fukui 910-1193, Japan
| | - Kenji Uchimura
- Department of Biochemistry, Nagoya University Graduate School of Medicine, Nagoya, 466-8550, Japan
- CNRS, UMR 8576, Unit of Glycobiology Structures and Functions, University of Lille, F-59000 Lille, France
| | - Reza Abdi
- Transplantation Research Center, Renal Division, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA
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Gebhardt C, Simon SCS, Weber R, Gries M, Mun DH, Reinhard R, Holland-Letz T, Umansky V, Utikal J. Potential therapeutic effect of low-dose paclitaxel in melanoma patients resistant to immune checkpoint blockade: A pilot study. Cell Immunol 2020; 360:104274. [PMID: 33383383 DOI: 10.1016/j.cellimm.2020.104274] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 12/15/2020] [Accepted: 12/18/2020] [Indexed: 12/13/2022]
Abstract
The low dose application of chemotherapeutic agents such as paclitaxel was previously shown to initiate anti-tumor activity by neutralizing myeloid-derived suppressor cells (MDSCs) in melanoma mouse models. Here, we investigated immunomodulating effects of low-dose paclitaxel in 9 metastatic melanoma patients resistant to prior treatments. Three patients showed response to therapy (two partial responses and one stable disease). In responding patients, paclitaxel decreased the frequency and immunosuppressive pattern of MDSCs in the peripheral blood and skin metastases. Furthermore, paclitaxel modulated levels of inflammatory mediators in the serum. In addition, responders displayed enhanced frequencies of tumor-infiltrating CD8+ T cells and their activity indicated by the upregulation of CD25 and TCR ζ-chain expression. Our study suggests that low-dose paclitaxel treatment could improve clinical outcome of some advanced melanoma patients by enhancing anti-tumor immunity and might be proposed for combined melanoma immunotherapy.
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Affiliation(s)
- Christoffer Gebhardt
- Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany; Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, Ruprecht-Karl University of Heidelberg, Mannheim, Germany; Department of Dermatology and Venereology, University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany.
| | - Sonja C S Simon
- Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany; Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, Ruprecht-Karl University of Heidelberg, Mannheim, Germany
| | - Rebekka Weber
- Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany; Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, Ruprecht-Karl University of Heidelberg, Mannheim, Germany
| | - Mirko Gries
- Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany; Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, Ruprecht-Karl University of Heidelberg, Mannheim, Germany
| | - Dong Hun Mun
- Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany; Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, Ruprecht-Karl University of Heidelberg, Mannheim, Germany
| | - Raphael Reinhard
- Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, Ruprecht-Karl University of Heidelberg, Mannheim, Germany
| | - Tim Holland-Letz
- Division of Biostatistics, German Cancer Research Center (DKFZ), Heidelberg, Germany.
| | - Viktor Umansky
- Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany; Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, Ruprecht-Karl University of Heidelberg, Mannheim, Germany
| | - Jochen Utikal
- Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany; Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, Ruprecht-Karl University of Heidelberg, Mannheim, Germany.
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Abstract
PURPOSE OF REVIEW This article focuses on the immunosuppressive impact of myeloid-derived suppressor cells (MDSCs) and the potential clinical implications in hematological malignancies. RECENT FINDINGS MDSCs play a critical role in the regulation of the immune response in cancer. They inhibit activation of adaptive immune response and as a result foster the growth of the malignancy. Recent studies have shown that MDSCs serve as prognostic biomarkers and as targets for cancer immunotherapy. Preclinical and clinical studies have identified new approaches to deplete MDSC populations and inhibit MDSC function with combination immunomodulatory therapies including chemotherapeutic agents with immune checkpoint-directed treatment. SUMMARY A broad spectrum of publications indicate that direct targeting of MDSCs may abrogate their protumorigenic impact within the tumor microenvironment through activation of the adaptive immune response.
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Kim HD, Ryu MH, Yoon S, Na YS, Moon M, Lee H, Song HG, Kang YK. Clinical implications of neutrophil-to-lymphocyte ratio and MDSC kinetics in gastric cancer patients treated with ramucirumab plus paclitaxel. Chin J Cancer Res 2020; 32:621-630. [PMID: 33223757 PMCID: PMC7666782 DOI: 10.21147/j.issn.1000-9604.2020.05.07] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Objective We aimed to investigate the prognostic value of neutrophil-to-lymphocyte ratio (NLR) and myeloid-derived suppressor cells (MDSCs) in gastric cancer patients treated with second-line ramucirumab plus paclitaxel. Methods A total of 116 patients with advanced or metastatic gastric cancer who receive ramucirumab plus paclitaxel were prospectively enrolled. Fresh blood samples were collected before and after treatment, and flow cytometry was performed to assess the proportions of monocytic (mMDSCs) and granulocytic MDSCs (gMDSCs). Results Median age was 58 years and 71 (61.2%) patients were male. A baseline NLR≥2.94 was associated with significantly poorer progression-free survival (PFS) and overall survival (OS) vs. an NLR<2.94 (P=0.011 and P=0.002, respectively). In multivariate analysis, an NLR≥2.94 was independently associated with poorer PFS [hazard ratio (HR)=1.58; 95% confidence interval (95% CI): 1.01-2.49, P=0.046] and OS (HR=1.77; 95% CI: 1.04-3.04, P=0.036). While mMDSC counts did not significantly change following two cycles of therapy (P=0.530), gMDSC counts decreased significantly after two treatment cycles (P=0.025) but tended to increase in patients with progressive disease after two treatment cycles (P=0.098). A progressive increase in gMDSC counts (≥44%) was associated with a significantly shorter PFS and OSvs. a gMDSC count increase <44% (P=0.001 and P=0.003, respectively). Conclusions The baseline NLR may help guide clinical decisions during ramucirumab plus paclitaxel therapy for gastric cancer. Our gMDSC kinetics data warrant further clinical validation and mechanistic investigation.
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Affiliation(s)
- Hyung-Don Kim
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea
| | - Min-Hee Ryu
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea
| | | | - Young-Soon Na
- Asan Institute for Life Science, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea
| | - Meesun Moon
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea
| | - Hyungeun Lee
- Asan Institute for Life Science, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea
| | | | - Yoon-Koo Kang
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea
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Su Y, Chen L, Yang F, Cheung PCK. Beta-d-glucan-based drug delivery system and its potential application in targeting tumor associated macrophages. Carbohydr Polym 2020; 253:117258. [PMID: 33278940 DOI: 10.1016/j.carbpol.2020.117258] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 09/16/2020] [Accepted: 10/13/2020] [Indexed: 02/09/2023]
Abstract
Use of polysaccharides as carriers in drug delivery system is a hot topic, especially those with specific recognition of immune cells, enabling them to be applied in targeting delivery system. β-d-glucans are naturally occurring non-digestible polysaccharides with immunomodulatory activities that have attracted increasing attention to serve as therapeutic agents or immune-adjuvants. Being able to be specifically recognized by immune cells like macrophages, β-d-glucans can be developed as promising carriers for targeting delivery with stability, biocompatibility and specificity when applied in immunotherapy. Targeting tumor associated macrophages (TAMs) is an emerging strategy for cancer immunotherapy since it exerts anti-cancer effects based on modulating body immunity in tumor microenvironment (TME). This new strategy does not require high concentration of drugs to kill cancer cells directly and lessen tumor recurrence by creating unique immune memory for malignant cells. In this review, construction strategies of polysaccharide-based drug delivery system of three types of β-d-glucan including non-yeast and yeast β-d-glucans as well as hyper-branched β-d-glucan are discussed with reference to their branching characteristics and conformation. The applications of these β-d-glucans as nano-carrier for drug delivery targeting TAMs are also discussed.
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Affiliation(s)
- Yuting Su
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China.
| | - Lei Chen
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China.
| | - Fan Yang
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China.
| | - Peter C K Cheung
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China.
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Dendritic Cells and Myeloid Derived Suppressor Cells Fully Responsive to Stimulation via Toll-Like Receptor 4 Are Rapidly Induced from Bone-Marrow Cells by Granulocyte-Macrophage Colony-Stimulating Factor. Vaccines (Basel) 2020; 8:vaccines8030522. [PMID: 32932705 PMCID: PMC7564202 DOI: 10.3390/vaccines8030522] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Accepted: 09/07/2020] [Indexed: 12/18/2022] Open
Abstract
Dendritic cells (DCs) are commonly generated from bone marrow (BM) progenitor cells with granulocyte-macrophage colony-stimulating factor (GM-CSF) alone or in combination with interleukin 4 (IL-4). These cells are often harvested post day 5, when they acquire maturation markers and can stimulate T cells. Apart from DCs, myeloid derived suppressor cells (MDSCs) are also found within these cultures. However, little is known about the functional characteristics of DCs and MDSCs before day 5. Herein, using a murine model, it is shown that early DCs and MDSCs, even in cultures with GM-CSF alone, upregulate fully maturation and activation surface molecules in response to the toll-like receptor 4 (TLR4) ligand lipopolysaccharide (LPS) stimulation. Despite initially displaying lower marker expression levels, these cells efficiently induced T cell stimulation and cytokine production. Interestingly, Gr-1int MDSCs increased their T cell co-stimulatory activity upon TLR4 stimulation. Additionally, early DCs and MDSCs exhibited differential endocytic capacity for viral sized nanoparticles and bacterial sized microparticles. DCs internalized both particle sizes, whilst MDSCs only internalized the larger microparticles, with reduced endocytic activity over time in the culture. These findings have unveiled an important role for the rapid initiation of productive immunity by GM-CSF, with promising implications for future vaccine and DC immunotherapy developments.
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Abstract
PURPOSE OF REVIEW This article focuses on the immunosuppressive impact of myeloid-derived suppressor cells (MDSCs) and the potential clinical implications in hematological malignancies. RECENT FINDINGS MDSCs play a critical role in the regulation of the immune response in cancer. They inhibit activation of adaptive immune response and as a result foster the growth of the malignancy. Recent studies have shown that MDSCs serve as prognostic biomarkers and as targets for cancer immunotherapy. Preclinical and clinical studies have identified new approaches to deplete MDSC populations and inhibit MDSC function with combination immunomodulatory therapies including chemotherapeutic agents with immune checkpoint-directed treatment. SUMMARY A broad spectrum of publications indicate that direct targeting of MDSCs may abrogate their protumorigenic impact within the tumor microenvironment through activation of the adaptive immune response.
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Affiliation(s)
- Emine Gulsen Gunes
- Department of Hematology and Hematopoietic Cell Transplantation, Judy and Bernard Briskin Center for Multiple Myeloma Research, City of Hope Medical Center
- Beckman Research Institute
| | - Steven T Rosen
- Department of Hematology and Hematopoietic Cell Transplantation, Judy and Bernard Briskin Center for Multiple Myeloma Research, City of Hope Medical Center
- Beckman Research Institute
| | - Christiane Querfeld
- Beckman Research Institute
- Division of Dermatology, City of Hope Comprehensive Cancer Center, Duarte, California, USA
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Zhou Y, Han M, Gao J. Prognosis and targeting of pre-metastatic niche. J Control Release 2020; 325:223-234. [PMID: 32629136 DOI: 10.1016/j.jconrel.2020.06.037] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 06/27/2020] [Accepted: 06/29/2020] [Indexed: 12/21/2022]
Abstract
As the main cause of tumoral fatality, metastasis remains to be one of the most urgent difficulties researcher struggled to overcome. During the development and progression of metastasis, the establishment of pre-metastatic niche is crucial in preparing fertile microenvironment for disseminated tumor cells settlement and colonization in distant metastatic target sites. The key participators, including the primary tumor-derived factors, bone marrow-derived cells, stromal cells of both the host and the potential metastatic sites, regulate the temporal progress of potential metastasis. Firstly, pioneers are sent from primary tumor, recruiting immunosuppressive cells; then circulating tumor cells settled and colonized; and finally, micrometastases develop. Here, we summarize the therapeutic strategies presented in recent years targeting different stages of the pre-metastatic niche formation and discuss their chances and challenges in clinical translation, providing promising approaches for metastasis prevention and therapeutic interventions.
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Affiliation(s)
- Yi Zhou
- Institute of Pharmaceutics, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Min Han
- Institute of Pharmaceutics, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China.
| | - Jianqing Gao
- Institute of Pharmaceutics, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China.
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Dal Bo M, De Mattia E, Baboci L, Mezzalira S, Cecchin E, Assaraf YG, Toffoli G. New insights into the pharmacological, immunological, and CAR-T-cell approaches in the treatment of hepatocellular carcinoma. Drug Resist Updat 2020; 51:100702. [DOI: 10.1016/j.drup.2020.100702] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 04/06/2020] [Accepted: 04/13/2020] [Indexed: 02/07/2023]
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André N, Orbach D, Pasquier E. Metronomic Maintenance for High-Risk Pediatric Malignancies: One Size Will Not Fit All. Trends Cancer 2020; 6:819-828. [PMID: 32601045 DOI: 10.1016/j.trecan.2020.05.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Revised: 04/15/2020] [Accepted: 05/19/2020] [Indexed: 02/07/2023]
Abstract
Maintenance therapy sometimes relies on the use of metronomic chemotherapy (MC); that is, the continuous administration of low-dose chemotherapy. Maintenance therapy has been successfully used for decades in pediatric patients with acute lymphoblastic leukemia (ALL) and recent results have demonstrated improved outcomes in patients with pediatric high-risk rhabdomyosarcoma (RMS) on maintenance therapy. Here, we review the use of metronomic maintenance therapy in pediatric cancer and discuss its mechanisms of action on the tumor microenvironment and cancer cells. We also discuss its potential use as a chemotherapy alone or in combination with targeted therapies, immunotherapies, or agents for drug repurposing.
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Affiliation(s)
- Nicolas André
- Pediatric Hematology and Oncology Department, Hôpital pour Enfant de La Timone, AP-HM, Marseille, France; Centre de Recherche en Cancérologie de Marseille Inserm U1068, Aix-Marseille University, Marseille, France; Metronomics Global Health Initiative, Marseille, France.
| | - Daniel Orbach
- SIREDO Oncology Center (Care, Innovation and Research for Children, Adolescents and Young Adults with Cancer), Institut Curie, PSL University, Paris, France
| | - Eddy Pasquier
- Centre de Recherche en Cancérologie de Marseille Inserm U1068, Aix-Marseille University, Marseille, France; Metronomics Global Health Initiative, Marseille, France
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68
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Zhao X, Kassaye B, Wangmo D, Lou E, Subramanian S. Chemotherapy but Not the Tumor Draining Lymph Nodes Determine the Immunotherapy Response in Secondary Tumors. iScience 2020; 23:101056. [PMID: 32344378 PMCID: PMC7186531 DOI: 10.1016/j.isci.2020.101056] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 03/10/2020] [Accepted: 04/08/2020] [Indexed: 12/22/2022] Open
Abstract
Immunotherapies are used as adjuvant therapies for cancers. However, knowledge of how traditional cancer treatments affect immunotherapies is limited. Using mouse models, we demonstrate that tumor-draining lymph nodes (TdLNs) are critical for tumor antigen-specific T cell response. However, removing TdLNs concurrently with established primary tumors did not affect the immune checkpoint blockade (ICB) response on localized secondary tumor due to immunotolerance in TdLNs and distribution of antigen-specific T cells in peripheral lymphatic organs. Notably, treatment response improved with sequential administration of 5-fluorouracil (5-FU) and ICB compared with concurrent administration of ICB with 5-FU. Immune profiling revealed that using 5-FU as induction treatment increased tumor visibility to immune cells, decreased immunosuppressive cells in the tumor microenvironment, and limited chemotherapy-induced T cell depletion. We show that the effect of traditional cytotoxic treatment, not TdLNs, influences immunotherapy response in localized secondary tumors. We postulate essential considerations for successful immunotherapy strategies in clinical conditions.
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Affiliation(s)
- Xianda Zhao
- Department of Surgery, University of Minnesota Medical School, 11-212 Moos Tower, Mayo Mail Code 195, 420 Delaware Street SE, Minneapolis, MN 55455, USA
| | - Beminet Kassaye
- Department of Surgery, University of Minnesota Medical School, 11-212 Moos Tower, Mayo Mail Code 195, 420 Delaware Street SE, Minneapolis, MN 55455, USA
| | - Dechen Wangmo
- Department of Surgery, University of Minnesota Medical School, 11-212 Moos Tower, Mayo Mail Code 195, 420 Delaware Street SE, Minneapolis, MN 55455, USA
| | - Emil Lou
- Department of Medicine, University of Minnesota Medical School, Minneapolis, MN 55455, USA
| | - Subbaya Subramanian
- Department of Surgery, University of Minnesota Medical School, 11-212 Moos Tower, Mayo Mail Code 195, 420 Delaware Street SE, Minneapolis, MN 55455, USA; Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455, USA.
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Law AMK, Valdes-Mora F, Gallego-Ortega D. Myeloid-Derived Suppressor Cells as a Therapeutic Target for Cancer. Cells 2020; 9:cells9030561. [PMID: 32121014 PMCID: PMC7140518 DOI: 10.3390/cells9030561] [Citation(s) in RCA: 252] [Impact Index Per Article: 63.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 02/22/2020] [Accepted: 02/24/2020] [Indexed: 12/15/2022] Open
Abstract
The emergence of immunotherapy has been an astounding breakthrough in cancer treatments. In particular, immune checkpoint inhibitors, targeting PD-1 and CTLA-4, have shown remarkable therapeutic outcomes. However, response rates from immunotherapy have been reported to be varied, with some having pronounced success and others with minimal to no clinical benefit. An important aspect associated with this discrepancy in patient response is the immune-suppressive effects elicited by the tumour microenvironment (TME). Immune suppression plays a pivotal role in regulating cancer progression, metastasis, and reducing immunotherapy success. Most notably, myeloid-derived suppressor cells (MDSC), a heterogeneous population of immature myeloid cells, have potent mechanisms to inhibit T-cell and NK-cell activity to promote tumour growth, development of the pre-metastatic niche, and contribute to resistance to immunotherapy. Accumulating research indicates that MDSC can be a therapeutic target to alleviate their pro-tumourigenic functions and immunosuppressive activities to bolster the efficacy of checkpoint inhibitors. In this review, we provide an overview of the general immunotherapeutic approaches and discuss the characterisation, expansion, and activities of MDSCs with the current treatments used to target them either as a single therapeutic target or synergistically in combination with immunotherapy.
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Affiliation(s)
- Andrew M. K. Law
- Tumour Development Group, The Kinghorn Cancer Centre, Garvan Institute of Medical Research, Sydney, NSW 2010, Australia
- Correspondence: (A.M.K.L.); (F.V.-M.); (D.G.-O.); Tel.: +61-(0)2-9355-5894 (A.M.K.L); +61-(0)2-9385-0143 (F.V.-M); +61-(0)2-9355-5776 (D.G.-O)
| | - Fatima Valdes-Mora
- Histone Variants Group, Garvan Institute of Medical Research, Sydney, NSW 2010, Australia
- St. Vincent’s Clinical School, Faculty of Medicine, University of New South Wales Sydney, Sydney, NSW 2052, Australia
- Correspondence: (A.M.K.L.); (F.V.-M.); (D.G.-O.); Tel.: +61-(0)2-9355-5894 (A.M.K.L); +61-(0)2-9385-0143 (F.V.-M); +61-(0)2-9355-5776 (D.G.-O)
| | - David Gallego-Ortega
- Tumour Development Group, The Kinghorn Cancer Centre, Garvan Institute of Medical Research, Sydney, NSW 2010, Australia
- St. Vincent’s Clinical School, Faculty of Medicine, University of New South Wales Sydney, Sydney, NSW 2052, Australia
- Correspondence: (A.M.K.L.); (F.V.-M.); (D.G.-O.); Tel.: +61-(0)2-9355-5894 (A.M.K.L); +61-(0)2-9385-0143 (F.V.-M); +61-(0)2-9355-5776 (D.G.-O)
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Chen Q, Xia R, Zheng W, Zhang L, Li P, Sun X, Shi J. Metronomic paclitaxel improves the efficacy of PD-1 monoclonal antibodies in breast cancer by transforming the tumor immune microenvironment. Am J Transl Res 2020; 12:519-530. [PMID: 32194900 PMCID: PMC7061845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2019] [Accepted: 01/22/2020] [Indexed: 06/10/2023]
Abstract
The clinical efficacy of PD-1/PD-L1 monoclonal antibodies (mAbs) in triple-negative breast cancer (TNBC) is unsatisfactory. Immunotherapy combined with chemotherapy shows good therapeutic potential. Preclinical and clinical studies have shown that metronomic chemotherapy may stimulate anticancer immune responses. We aimed to verify whether metronomic paclitaxel (PTX, TAX) treatment can improve the efficacy of a PD-1 mAb in a TNBC mouse model and to explore the potential mechanism. After constructing the TNBC mouse model and treating with PD-1 mAb, metronomic PTX chemotherapy or combined therapy, the differences in the efficacy of each treatment group were compared and analyzed. Our findings suggested that the combination of metronomic PTX chemotherapy and PD-1 mAb produces a potent antitumor effect. Further experiments demonstrated that metronomic PTX chemotherapy changed the immune cell population in tumor tissues. These data suggest that metronomic PTX improves the efficacy of the PD-1 mAb in TNBC by transforming the tumor immune microenvironment, and these results provide strong evidence for the use of this treatment in TNBC patients in the future.
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Affiliation(s)
- Qian Chen
- Department of Oncology, The Affiliated Suzhou Hospital of Nanjing Medical University242 Guangji Road, Suzhou 215008, Jiangsu, China
- Central Laboratory, The Affiliated Suzhou Hospital of Nanjing Medical University242 Guangji Road, Suzhou 215008, Jiangsu, China
| | - Rui Xia
- Department of Oncology, The Second Affiliated Hospital of Soochow UniversitySuzhou 215004, Jiangsu, China
| | - Weiwei Zheng
- Central Laboratory, The Affiliated Suzhou Hospital of Nanjing Medical University242 Guangji Road, Suzhou 215008, Jiangsu, China
| | - Luyao Zhang
- Department of Oncology, The Affiliated Suzhou Hospital of Nanjing Medical University242 Guangji Road, Suzhou 215008, Jiangsu, China
| | - Ping Li
- Central Laboratory, The Affiliated Suzhou Hospital of Nanjing Medical University242 Guangji Road, Suzhou 215008, Jiangsu, China
| | - Xingwei Sun
- Department of Intervention, The Second Affiliated Hospital of Soochow UniversitySuzhou 215004, Jiangsu, China
| | - Jianming Shi
- Department of Oncology, The Affiliated Suzhou Hospital of Nanjing Medical University242 Guangji Road, Suzhou 215008, Jiangsu, China
- Central Laboratory, The Affiliated Suzhou Hospital of Nanjing Medical University242 Guangji Road, Suzhou 215008, Jiangsu, China
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Vergnenegre A, Monnet I, Bizieux A, Bernardi M, Chiapa AM, Léna H, Chouaïd C, Robinet G. Open-label Phase II trial to evaluate safety and efficacy of second-line metronomic oral vinorelbine-atezolizumab combination for stage-IV non-small-cell lung cancer - VinMetAtezo trial, (GFPC ‡ 04-2017). Future Oncol 2020; 16:5-10. [PMID: 31894704 DOI: 10.2217/fon-2019-0730] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Metronomic chemotherapy is defined as frequent low-dose administration without prolonged drug-free breaks. Combining immune-checkpoint inhibitors and metronomic chemotherapy is a new approach to improve responses and delay onset of resistance to immune-checkpoint inhibitors. This multicenter, Phase II, open-label, single-arm study was designed to assess the safety and efficacy of metronomic oral vinorelbine in combination with immune-checkpoint inhibitors in advanced non-small-cell lung cancers progressing after first-line platinum-based chemotherapy. The recommended metronomic oral vinorelbine dose will be determined during a safety run-in period including 12 patients; the main study will include 59 additional patients. The primary outcome is progression-free survival at 4 months. Secondary outcomes are safety of the combination, median overall survival, objective response rate, disease-control rate at 4 months and quality of life (NCT03801304).
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Affiliation(s)
| | - Isabelle Monnet
- Department of Pneumology, Centre Hospitalier Intercommunal Créteil, Créteil, France
| | - Acya Bizieux
- Department of Pneumology, Centre Hospitalier Départemental Vendée, La Roche-sur-Yon, France
| | - Marie Bernardi
- Department of Pneumology, Centre Hospitalier Aix-en-Provence, Aix-en-Provence, France
| | - Anne Marie Chiapa
- Department of Pneumology, Centre Hospitalier Quimper, Quimper, France
| | - Hervé Léna
- Department of Pneumology, Centre Hospitalier Quimper, Quimper, France
| | - Christos Chouaïd
- Department of Pneumology, Centre Hospitalier Intercommunal Créteil, Créteil, France
| | - Gilles Robinet
- Department of Pneumology, Centre Hospitalier Universitaire Brest, Brest France
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Pramanik R, Bakhshi S. Metronomic therapy in pediatric oncology: A snapshot. Pediatr Blood Cancer 2019; 66:e27811. [PMID: 31207063 DOI: 10.1002/pbc.27811] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Revised: 04/23/2019] [Accepted: 04/24/2019] [Indexed: 12/16/2022]
Abstract
Metronomic chemotherapy transitioned from the bench to bedside in the early 2000s and since then has carved a niche for itself in pediatric oncology. It has been used solely or in combination with other modalities such as radiotherapy, maximum tolerated dose chemotherapy, and targeted agents in adjuvant, palliative, as well as maintenance settings. No wonder, the resulting medical literature is extremely heterogeneous. In this review, the authors review and synthesize the published literature in pediatric metronomics giving a glimpse of its history, varied applications, and evolution of this genre of chemotherapy in pediatric cancers. Limitations, future prospects, and grey areas are also highlighted.
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Affiliation(s)
- Raja Pramanik
- Department of Medical Oncology, Dr. B. R.A. Institute Rotary Cancer Hospital, All India Institute of Medical Sciences, New Delhi, India
| | - Sameer Bakhshi
- Department of Medical Oncology, Dr. B. R.A. Institute Rotary Cancer Hospital, All India Institute of Medical Sciences, New Delhi, India
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Opzoomer JW, Sosnowska D, Anstee JE, Spicer JF, Arnold JN. Cytotoxic Chemotherapy as an Immune Stimulus: A Molecular Perspective on Turning Up the Immunological Heat on Cancer. Front Immunol 2019; 10:1654. [PMID: 31379850 PMCID: PMC6652267 DOI: 10.3389/fimmu.2019.01654] [Citation(s) in RCA: 88] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Accepted: 07/03/2019] [Indexed: 12/14/2022] Open
Abstract
Cytotoxic chemotherapeutics (CCTs) are widely used in the treatment of cancer. Although their mechanisms of action have been best understood in terms of targeting the apparatus of mitosis, an ability to stimulate anti-tumor immune responses is increasing the recognition of these agents as immunotherapies. Immune checkpoint blockade antibodies neutralize important, but specific, immune-regulatory interactions such as PD-1/PD-L1 and CTLA-4 to improve the anti-tumor immune response. However, CCTs can provide a broad-acting immune-stimulus against cancer, promoting both T-cell priming and recruitment to the tumor, which compliments the effects of immune checkpoint blockade. A key pathway in this process is "immunogenic cell death" (ICD) which occurs as a result of tumor cell endoplasmic reticulum stress and apoptosis elicited by CCTs. ICD involves a series of non-redundant signaling events which break tolerance and license anti-tumor antigen-specific T-cells, allowing CCTs to act as "in situ" tumor vaccination tools. Not all responses are tumor cell-intrinsic, as CCTs can also modulate the broader tumor microenvironment. This modulation occurs through preferential depletion of stromal cells which suppress and neutralize robust anti-tumor immune responses, such as myeloid cell populations and Tregs, while effector CD8+ and CD4+ T-cells and NK cells are relatively spared. The immune-stimulating effects of CCTs are dependent on chemotherapy class, dose and tumor cell sensitivity to the agent, highlighting the need to understand the underlying biology of these responses. This mini review considers the immune-stimulating effects of CCTs from a molecular perspective, specifically highlighting considerations for their utilization in the context of combinations with immunotherapy.
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Affiliation(s)
- James W Opzoomer
- Faculty of Life Sciences and Medicine, School of Cancer and Pharmaceutical Sciences, King's College London, Guy's Hospital, London, United Kingdom
| | - Dominika Sosnowska
- Faculty of Life Sciences and Medicine, School of Cancer and Pharmaceutical Sciences, King's College London, Guy's Hospital, London, United Kingdom
| | - Joanne E Anstee
- Faculty of Life Sciences and Medicine, School of Cancer and Pharmaceutical Sciences, King's College London, Guy's Hospital, London, United Kingdom
| | - James F Spicer
- Faculty of Life Sciences and Medicine, School of Cancer and Pharmaceutical Sciences, King's College London, Guy's Hospital, London, United Kingdom
| | - James N Arnold
- Faculty of Life Sciences and Medicine, School of Cancer and Pharmaceutical Sciences, King's College London, Guy's Hospital, London, United Kingdom
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Chovanec M, Mardiak J, Mego M. Immune mechanisms and possible immune therapy in testicular germ cell tumours. Andrology 2019; 7:479-486. [PMID: 31169364 DOI: 10.1111/andr.12656] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 05/02/2019] [Accepted: 05/05/2019] [Indexed: 01/08/2023]
Abstract
BACKGROUND Testicular germ cell tumours (GCTs) are the only universally curable solid malignancy. The long-term cure rate of >95% is attributed to the extraordinary sensitivity to cisplatin-based treatment but a proportion of patients die due to a progression of the chemotherapy-refractory disease. While treatment of a variety of solid cancers was significantly improved with recent immune therapies, the immunology and immunotherapy remained underinvestigated in GCTs. OBJECTIVES In this narrative review, we summarize evidence about immune-related mechanisms and possible immune therapies in GCTs and provide insights and implications for future research and clinical practice. MATERIALS AND METHODS We performed a comprehensive search of PubMed/MEDLINE to identify original and review articles reporting on immune mechanisms and immunotherapy in GCTs. Review articles were further searched for additional original articles. RESULTS Clear link of immune surveillance and the presence of GCT have been identified with several novel immune-related prognostic biomarkers published recently. Several case reports, case series, and preliminary results from phase I-II studies are emerging to report on the efficacy of immune checkpoint inhibitors. DISCUSSION Newly discovered immune biomarkers provide an evidence supporting the role of immune environment in the GCT biology. While these discoveries provide only an initial insight into the immunobiology, strong correlation with prognosis is evident. This provided a premise to investigate the treatment efficacy of novel immunotherapy. Some efficacy of these treatments has been reported in clinical setting; however, the results of published studies with immune checkpoint inhibitor monotherapy seem to be disappointing. CONCLUSION Immune-related mechanisms and efficacy of immune checkpoint blockade in GCTs should be further investigated in preclinical and clinical studies.
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Affiliation(s)
- M Chovanec
- 2nd Department of Oncology, Faculty of Medicine, Comenius University and National Cancer Institute, Bratislava, Slovakia.,Division of Hematology/Oncology, Indiana University Simon Cancer Center, Indianapolis, IN, USA
| | - J Mardiak
- 2nd Department of Oncology, Faculty of Medicine, Comenius University and National Cancer Institute, Bratislava, Slovakia
| | - M Mego
- 2nd Department of Oncology, Faculty of Medicine, Comenius University and National Cancer Institute, Bratislava, Slovakia.,Translational Research Unit at 2nd Department of Oncology, Faculty of Medicine, Comenius University and National Cancer Institute, Bratislava, Slovakia
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75
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Bruno A, Mortara L, Baci D, Noonan DM, Albini A. Myeloid Derived Suppressor Cells Interactions With Natural Killer Cells and Pro-angiogenic Activities: Roles in Tumor Progression. Front Immunol 2019; 10:771. [PMID: 31057536 PMCID: PMC6482162 DOI: 10.3389/fimmu.2019.00771] [Citation(s) in RCA: 127] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Accepted: 03/25/2019] [Indexed: 12/11/2022] Open
Abstract
Myeloid-derived suppressor cells (MDSCs) contribute to the induction of an immune suppressive/anergic, tumor permissive environment. MDSCs act as immunosuppression orchestrators also by interacting with several components of both innate and adaptive immunity. Natural killer (NK) cells are innate lymphoid cells functioning as primary effector of immunity, against tumors and virus-infected cells. Apart from the previously described anergy and hypo-functionality of NK cells in different tumors, NK cells in cancer patients show pro-angiogenic phenotype and functions, similar to decidual NK cells. We termed the pro-angiogenic NK cells in the tumor microenvironment "tumor infiltrating NK" (TINKs), and peripheral blood NK cells in cancer patients "tumor associated NK" (TANKs). The contribution of MDSCs in regulating NK cell functions in tumor-bearing host, still represent a poorly explored topic, and even less is known on NK cell regulation of MDSCs. Here, we review whether the crosstalk between MDSCs and NK cells can impact on tumor onset, angiogenesis and progression, focusing on key cellular and molecular interactions. We also propose that the similarity of the properties of tumor associated/tumor infiltrating NK and MDSC with those of decidual NK and decidual MDSCs during pregnancy could hint to a possible onco-fetal origin of these pro-angiogenic leukocytes.
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Affiliation(s)
- Antonino Bruno
- Scientific and Technology Pole, IRCCS MultiMedica, Milan, Italy
| | - Lorenzo Mortara
- Laboratory of Immunology and General Pathology, Department of Biotechnology and Life Sciences, University of Insubria, Varese, Italy
| | - Denisa Baci
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
| | - Douglas M Noonan
- Scientific and Technology Pole, IRCCS MultiMedica, Milan, Italy.,Laboratory of Immunology and General Pathology, Department of Biotechnology and Life Sciences, University of Insubria, Varese, Italy
| | - Adriana Albini
- Scientific and Technology Pole, IRCCS MultiMedica, Milan, Italy.,School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
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76
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Sacchetti B, Botticelli A, Pierelli L, Nuti M, Alimandi M. CAR-T with License to Kill Solid Tumors in Search of a Winning Strategy. Int J Mol Sci 2019; 20:E1903. [PMID: 30999624 PMCID: PMC6514830 DOI: 10.3390/ijms20081903] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 04/11/2019] [Accepted: 04/13/2019] [Indexed: 02/06/2023] Open
Abstract
Artificial receptors designed for adoptive immune therapies need to absolve dual functions: antigen recognition and abilities to trigger the lytic machinery of reprogrammed effector T lymphocytes. In this way, CAR-T cells deliver their cytotoxic hit to cancer cells expressing targeted tumor antigens, bypassing the limitation of HLA-restricted antigen recognition. Expanding technologies have proposed a wide repertoire of soluble and cellular "immunological weapons" to kill tumor cells; they include monoclonal antibodies recognizing tumor associated antigens on tumor cells and immune cell checkpoint inhibition receptors expressed on tumor specific T cells. Moreover, a wide range of formidable chimeric antigen receptors diversely conceived to sustain quality, strength and duration of signals delivered by engineered T cells have been designed to specifically target tumor cells while minimize off-target toxicities. The latter immunological weapons have shown distinct efficacy and outstanding palmarès in curing leukemia, but limited and durable effects for solid tumors. General experience with checkpoint inhibitors and CAR-T cell immunotherapy has identified a series of variables, weaknesses and strengths, influencing the clinical outcome of the oncologic illness. These aspects will be shortly outlined with the intent of identifying the still "missing strategy" to combat epithelial cancers.
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Affiliation(s)
| | - Andrea Botticelli
- Department of Clinical and Molecular Medicine, Sapienza University of Rome, 00161 Rome, Italy.
| | - Luca Pierelli
- Department of Experimental Medicine, Sapienza University of Rome, 00161 Rome, Italy.
| | - Marianna Nuti
- Department of Experimental Medicine, Sapienza University of Rome, 00161 Rome, Italy.
| | - Maurizio Alimandi
- Department of Clinical and Molecular Medicine, Sapienza University of Rome, 00161 Rome, Italy.
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77
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Zhang C, Long L, Xiong Y, Wang C, Peng C, Yuan Y, Liu Z, Lin Y, Jia Y, Zhou X, Li X. Facile Engineering of Indomethacin-Induced Paclitaxel Nanocrystal Aggregates as Carrier-Free Nanomedicine with Improved Synergetic Antitumor Activity. ACS APPLIED MATERIALS & INTERFACES 2019; 11:9872-9883. [PMID: 30767506 DOI: 10.1021/acsami.8b22336] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Carrier-free nanomedicines mainly composed of drug nanocrystals are considered as promising candidates for next-generation nanodrug formulations. However, such nanomedicines still need to be stabilized by additive surfactants, synthetic polymers, or biologically based macromolecules. Based on the strong intermolecular interactions between indomethacin (IDM, a COX-2 inhibitor) and paclitaxel (PTX, a chemotherapy drug), we herein successfully engineered a novel kind of carrier-free nanomedicines that organized as IDM-induced PTX nanocrystal aggregates via one-pot self-assembly without any nonactive excipients. In the assemblies of IDM and PTX (IDM/PTX assemblies), PTX nanocrystals were casted with amorphous IDM molecules, like a "brick-cement" architecture. In serum, these nanoassemblies could rapidly collapse into a great number of smaller nanoparticles, thus targeting the tumor site through the EPR effect. Under the assistance of IDM on immunotherapy, the IDM/PTX assemblies showed obviously improved synergetic antitumor effects of immunotherapy and chemotherapy. The self-assembly of two synergistic active substances into nanomedicines without any nonactive excipients might open an alternative avenue and give inspiration to fabricate novel carrier-free nanomedicines in many fields.
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Affiliation(s)
- Chengyuan Zhang
- School of Pharmacy and Bioengineering , Chongqing University of Technology , Chongqing 400054 , China
| | - Ling Long
- Department of Oncology, Xinqiao Hospital , Third Military Medical University , Chongqing 400042 , China
| | - Yao Xiong
- Institute of Pharmacy , Pharmaceutical College of Henan University , Kaifeng 475004 , China
| | | | | | | | | | | | | | - Xing Zhou
- School of Pharmacy and Bioengineering , Chongqing University of Technology , Chongqing 400054 , China
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78
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Zheng H, Zeltsman M, Zauderer MG, Eguchi T, Vaghjiani RG, Adusumilli PS. Chemotherapy-induced immunomodulation in non-small-cell lung cancer: a rationale for combination chemoimmunotherapy. Immunotherapy 2019; 9:913-927. [PMID: 29338609 DOI: 10.2217/imt-2017-0052] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Spurred by the survival benefits seen with the use of checkpoint blockade in non-small-cell lung cancer (NSCLC), there has been a growing interest in the potential applications of immunotherapy. Despite this, the objective response rate for single-agent immunotherapy remains ≤20% in patients with advanced NSCLC. A combinatorial approach that utilizes both chemotherapy and immunotherapy is a potential strategy to increase antitumor efficacy. Accumulating evidence has shown that the immunomodulatory effects of chemotherapeutic agents can be exploited in a combinational approach. Herein, we review the influence of specific chemotherapeutic agents on the tumor immune microenvironment in preclinical and clinical studies, and establish the rationale for combination chemoimmunotherapy for the treatment of NSCLC.
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Affiliation(s)
- Hua Zheng
- Thoracic Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, NY, USA.,Department of Oncology, Beijing Chest Hospital, Capital Medical University, 97 Machang, Tongzhou District, Beijing, China
| | - Masha Zeltsman
- Thoracic Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, NY, USA
| | - Marjorie G Zauderer
- Thoracic Oncology Service, Division of Solid Tumor Oncology, Department of Medicine, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, NY, USA
| | - Takashi Eguchi
- Thoracic Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, NY, USA
| | - Raj G Vaghjiani
- Thoracic Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, NY, USA
| | - Prasad S Adusumilli
- Thoracic Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, NY, USA.,Center for Cell Engineering, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA.,Deputy Chief, Translational & Clinical Research, Thoracic Service, Department of Surgery; Associate Attending, Thoracic Service, Department of Surgery; Director, Mesothelioma Program; Memorial Sloan Kettering Cancer Center, 1275 York Avenue, NY 10065, USA
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79
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Lin W, Chen M, Hong L, Zhao H, Chen Q. Crosstalk Between PD-1/PD-L1 Blockade and Its Combinatorial Therapies in Tumor Immune Microenvironment: A Focus on HNSCC. Front Oncol 2018; 8:532. [PMID: 30519541 PMCID: PMC6258806 DOI: 10.3389/fonc.2018.00532] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Accepted: 10/30/2018] [Indexed: 02/05/2023] Open
Abstract
Head and neck squamous cell carcinoma (HNSCC) is the sixth most common malignancy worldwide with a poor prognosis and high mortality. More than two-thirds of HNSCC patients still have no effective control of clinical progression, and the five-year survival rate is < 50%. Moreover, patients with platinum-refractory HNSCC have a median survival of < 6 months. The significant toxicity and low survival rates of current treatment strategies highlight the necessity for new treatment modalities. Recently, a large number of studies have demonstrated that programmed cell death protein-1 (PD-1) and its ligand, programmed cell death protein ligand-1 (PD-L1) play an essential role in tumor initiation and progression. PD-1/PD-L1 blockade has shown a desired and long-lasting therapeutic effect in the treatment of HNSCC and other malignancies. However, only a small number of patients with HNSCC can benefit from PD-1/PD-L1 blockade monotherapy, while the majority of patients do not respond. To overcome the unsatisfactory therapeutic effect of PD-1/PD-L1 blockade monotherapy, combining other treatment options for HNSCC (including chemotherapy, radiotherapy, targeted therapy, and immunotherapy) in the treatment scheme has become a commonly used strategy. Herein, the potential mechanisms underlying the crosstalk between PD-1/PD-L1 blockade and its combinatorial therapies for HNSCC were reviewed, and it is hoped that the improved understanding of the crosstalk process would provide further ideas for the design of a combinatorial regimen with a higher efficiency and response rate for the treatment of HNSCC and other malignancies.
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Affiliation(s)
- Weimin Lin
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Miao Chen
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Le Hong
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Hang Zhao
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Qianming Chen
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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80
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Burkert SC, Shurin GV, White DL, He X, Kapralov AA, Kagan VE, Shurin MR, Star A. Targeting myeloid regulators by paclitaxel-loaded enzymatically degradable nanocups. NANOSCALE 2018; 10:17990-18000. [PMID: 30226240 PMCID: PMC6563927 DOI: 10.1039/c8nr04437f] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Tumor microenvironment is characterized by immunosuppressive mechanisms associated with the accumulation of immune regulatory cells - myeloid-derived suppressor cells (MDSC). Therapeutic depletion of MDSC has been associated with inhibition of tumor growth and therefore represents an attractive approach to cancer immunotherapy. MDSC in cancer are characterized by enhanced enzymatic capacity to generate reactive oxygen and nitrogen species (RONS) which have been shown to effectively degrade carbonaceous materials. We prepared enzymatically openable nitrogen-doped carbon nanotube cups (NCNC) corked with gold nanoparticles and loaded with paclitaxel as a therapeutic cargo. Loading and release of paclitaxel was confirmed through electron microscopy, Raman spectroscopy and LC-MS analysis. Under the assumption that RONS generated by MDSCs can be utilized as a dual targeting and oxidative degradation mechanism for NCNC, here we report that systemic administration of paclitaxel loaded NCNC delivers paclitaxel to circulating and lymphoid tissue MDSC resulting in the inhibition of growth of tumors (B16 melanoma cells inoculated into C57BL/6 mice) in vivo. Tumor growth inhibition was associated with decreased MDSC accumulation quantified by flow cytometry that correlated with bio-distribution of gold-corked NCNC resolved by ICP-MS detection of residual gold in mouse tissue. Thus, we developed a novel immunotherapeutic approach based on unique nanodelivery vehicles, which can be loaded with therapeutic agents that are released specifically in MDSC via NCNC selective enzymatic "opening" affecting change in the tumor microenvironment.
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Affiliation(s)
- Seth C Burkert
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA.
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81
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Gou HF, Zhou L, Huang J, Chen XC. Intraperitoneal oxaliplatin administration inhibits the tumor immunosuppressive microenvironment in an abdominal implantation model of colon cancer. Mol Med Rep 2018; 18:2335-2341. [PMID: 29956798 DOI: 10.3892/mmr.2018.9219] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2017] [Accepted: 06/05/2018] [Indexed: 02/05/2023] Open
Abstract
Recent studies have demonstrated that some chemotherapeutic drugs can enhance antitumor immunity by eliminating and inactivating immunosuppressive cells. Oxaliplatin (OXP) induces immunogenic cell death by increasing the immunogenicity of cancer cells. However, the effects of OXP on the tumor immunosuppressive microenvironment remain unclear. The aim of the present study was to evaluate the antitumor activity of OXP by intraperitoneal (i.p.) administration in an abdominal implantation model of colon cancer and tested the tumor immune microenvironment to observe whether OXP affects the local immune inhibitory cell populations. Abdominal metastasis models were established by inoculation of CT26 cells. The antitumor efficacy of OXP and the tumor immune microenvironment were evaluated. The tumors and spleens of mice were harvested for flow cytometric analysis. Cluster of differentiation (CD)‑8+CD69+ T cells, regulatory T cells (Tregs), CD11b+F4/80high macrophages and myeloid‑derived suppressor cells (MDSCs) were evaluated by flow cytometric analysis. In vivo i.p. administration of OXP inhibited tumor growth in the abdominal metastasis model. Furthermore, OXP was observed to increase tumor‑infiltrating activated CD8+ T cells in tumors, decrease CD11b+F4/80high macrophages in tumors and decrease MDSCs in the spleen. These results suggested that i.p. administration of OXP alone may inhibit tumor cell growth and induce the antitumor immunostimulatory microenvironment by eliminating immunosuppressive cells.
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Affiliation(s)
- Hong-Feng Gou
- Department of Abdominal Cancer, Cancer Center, The State Key Laboratory of Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Lei Zhou
- Department of Abdominal Cancer, Cancer Center, West China Medical School, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Jia Huang
- Department of Abdominal Cancer, Cancer Center, West China Medical School, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Xin-Chuan Chen
- Department of Hematology, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan 610041, P.R. China
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82
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Katayama Y, Tachibana M, Kurisu N, Oya Y, Terasawa Y, Goda H, Kobiyama K, Ishii KJ, Akira S, Mizuguchi H, Sakurai F. Oncolytic Reovirus Inhibits Immunosuppressive Activity of Myeloid-Derived Suppressor Cells in a TLR3-Dependent Manner. THE JOURNAL OF IMMUNOLOGY 2018; 200:2987-2999. [PMID: 29555782 DOI: 10.4049/jimmunol.1700435] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Accepted: 02/21/2018] [Indexed: 12/24/2022]
Abstract
Oncolytic reovirus, which possesses 10 segments of dsRNA genome, mediates antitumor effects via not only virus replication in a tumor cell-specific manner, but also activation of antitumor immunity; however, the mechanism(s) of reovirus-induced activation of antitumor immunity have not been fully elucidated. Recent studies have demonstrated that overcoming an immunosuppressive environment in tumor-bearing hosts is important to achieve efficient activation of antitumor immunity. Among the various types of cells involved in immunosuppression, it has been revealed that myeloid-derived suppressor cells (MDSCs) are significantly increased in tumor-bearing hosts and play crucial roles in the immunosuppression in tumor-bearing hosts. In this study, we examined whether reovirus inhibits the immunosuppressive activity of MDSCs, resulting in efficient activation of immune cells after in vivo administration. The results showed that splenic MDSCs recovered from PBS-treated tumor-bearing mice significantly suppressed the Ag-specific proliferation of CD8+ T cells. In contrast, the suppressive activity of MDSCs on T cell proliferation was significantly reduced after reovirus administration. Reovirus also inhibited the immunosuppressive activity of MDSCs in IFN-β promoter stimulator-1 knockout (KO) mice and in wild-type mice. In contrast, the immunosuppressive activity of MDSCs in TLR-3 KO mice was not significantly altered by reovirus treatment. The activation levels of CD4+ and CD8+ T cells were significantly lower in TLR3 KO mice than in wild-type mice after reovirus administration. These results indicate that reovirus inhibits the immunosuppressive activity of MDSCs in a TLR3, but not IFN-β promoter stimulator-1, signaling-dependent manner.
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Affiliation(s)
- Yuki Katayama
- Laboratory of Biochemistry and Molecular Biology, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka 565-0871, Japan
| | - Masashi Tachibana
- Laboratory of Biochemistry and Molecular Biology, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka 565-0871, Japan
| | - Nozomi Kurisu
- Laboratory of Biochemistry and Molecular Biology, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka 565-0871, Japan
| | - Yukako Oya
- Laboratory of Biochemistry and Molecular Biology, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka 565-0871, Japan
| | - Yuichi Terasawa
- Laboratory of Biochemistry and Molecular Biology, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka 565-0871, Japan
| | - Hiroshi Goda
- Laboratory of Biochemistry and Molecular Biology, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka 565-0871, Japan
| | - Kouji Kobiyama
- Laboratory of Adjuvant Innovation, Center for Vaccine and Adjuvant Research, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka 567-0085, Japan.,Laboratory of Vaccine Science, World Premier International Research Center Immunology Frontier Research Center, Osaka University, Suita, Osaka 565-0871, Japan
| | - Ken J Ishii
- Laboratory of Adjuvant Innovation, Center for Vaccine and Adjuvant Research, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka 567-0085, Japan.,Laboratory of Vaccine Science, World Premier International Research Center Immunology Frontier Research Center, Osaka University, Suita, Osaka 565-0871, Japan
| | - Shizuo Akira
- Laboratory of Host Defense, World Premier International Research Center Immunology Frontier Research Center, Osaka University, Suita, Osaka 565-0871, Japan.,Department of Host Defense, Research Institute for Microbial Diseases, Osaka University, Suita, Osaka 565-0871, Japan
| | - Hiroyuki Mizuguchi
- Laboratory of Biochemistry and Molecular Biology, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka 565-0871, Japan.,Laboratory of Hepatocyte Differentiation, National Institute of Biomedical Innovation, Health and Nutrition, Ibaraki, Osaka 567-0085, Japan.,Global Center for Medical Engineering and Informatics, Osaka University, Osaka 565-0871, Japan; and
| | - Fuminori Sakurai
- Laboratory of Biochemistry and Molecular Biology, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka 565-0871, Japan; .,Laboratory of Regulatory Sciences for Oligonucleotide Therapeutics, Clinical Drug Development Unit, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka 565-0871, Japan
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83
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Fleming V, Hu X, Weber R, Nagibin V, Groth C, Altevogt P, Utikal J, Umansky V. Targeting Myeloid-Derived Suppressor Cells to Bypass Tumor-Induced Immunosuppression. Front Immunol 2018; 9:398. [PMID: 29552012 PMCID: PMC5840207 DOI: 10.3389/fimmu.2018.00398] [Citation(s) in RCA: 318] [Impact Index Per Article: 53.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Accepted: 02/13/2018] [Indexed: 01/03/2023] Open
Abstract
The immune system has many sophisticated mechanisms to balance an extensive immune response. Distinct immunosuppressive cells could protect from excessive tissue damage and autoimmune disorders. Tumor cells take an advantage of those immunosuppressive mechanisms and establish a strongly immunosuppressive tumor microenvironment (TME), which inhibits antitumor immune responses, supporting the disease progression. Myeloid-derived suppressor cells (MDSC) play a crucial role in this immunosuppressive TME. Those cells represent a heterogeneous population of immature myeloid cells with a strong immunosuppressive potential. They inhibit an antitumor reactivity of T cells and NK cells. Furthermore, they promote angiogenesis, establish pre-metastatic niches, and recruit other immunosuppressive cells such as regulatory T cells. Accumulating evidences demonstrated that the enrichment and activation of MDSC correlated with tumor progression, recurrence, and negative clinical outcome. In the last few years, various preclinical studies and clinical trials targeting MDSC showed promising results. In this review, we discuss different therapeutic approaches on MDSC targeting to overcome immunosuppressive TME and enhance the efficiency of current tumor immunotherapies.
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Affiliation(s)
- Viktor Fleming
- Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, Heidelberg University, Mannheim, Germany
| | - Xiaoying Hu
- Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, Heidelberg University, Mannheim, Germany
| | - Rebekka Weber
- Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, Heidelberg University, Mannheim, Germany
| | - Vasyl Nagibin
- Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, Heidelberg University, Mannheim, Germany
| | - Christopher Groth
- Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, Heidelberg University, Mannheim, Germany
| | - Peter Altevogt
- Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, Heidelberg University, Mannheim, Germany
| | - Jochen Utikal
- Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, Heidelberg University, Mannheim, Germany
| | - Viktor Umansky
- Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, Heidelberg University, Mannheim, Germany
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84
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Zhang M, Kim JA, Huang AYC. Optimizing Tumor Microenvironment for Cancer Immunotherapy: β-Glucan-Based Nanoparticles. Front Immunol 2018; 9:341. [PMID: 29535722 PMCID: PMC5834761 DOI: 10.3389/fimmu.2018.00341] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2017] [Accepted: 02/06/2018] [Indexed: 12/22/2022] Open
Abstract
Immunotherapy is revolutionizing cancer treatment. Recent clinical success with immune checkpoint inhibitors, chimeric antigen receptor T-cell therapy, and adoptive immune cellular therapies has generated excitement and new hopes for patients and investigators. However, clinically efficacious responses to cancer immunotherapy occur only in a minority of patients. One reason is the tumor microenvironment (TME), which potently inhibits the generation and delivery of optimal antitumor immune responses. As our understanding of TME continues to grow, strategies are being developed to change the TME toward one that augments the emergence of strong antitumor immunity. These strategies include eliminating tumor bulk to provoke the release of tumor antigens, using adjuvants to enhance antigen-presenting cell function, and employ agents that enhance immune cell effector activity. This article reviews the development of β-glucan and β-glucan-based nanoparticles as immune modulators of TME, as well as their potential benefit and future therapeutic applications. Cell-wall β-glucans from natural sources including plant, fungi, and bacteria are molecules that adopt pathogen-associated molecular pattern (PAMP) known to target specific receptors on immune cell subsets. Emerging data suggest that the TME can be actively manipulated by β-glucans and their related nanoparticles. In this review, we discuss the mechanisms of conditioning TME using β-glucan and β-glucan-based nanoparticles, and how this strategy enables future design of optimal combination cancer immunotherapies.
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Affiliation(s)
- Mei Zhang
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, United States
- Case Comprehensive Cancer Center, Cleveland, OH, United States
- Seidman Cancer Center, University Hospitals, Cleveland, OH, United States
| | - Julian A. Kim
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, United States
- Case Comprehensive Cancer Center, Cleveland, OH, United States
- Seidman Cancer Center, University Hospitals, Cleveland, OH, United States
- Division of Surgical Oncology, Department of Surgery, Case Western Reserve University School of Medicine, Cleveland, OH, United States
| | - Alex Yee-Chen Huang
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, United States
- Case Comprehensive Cancer Center, Cleveland, OH, United States
- Division of Pediatric Hematology-Oncology, Department of Pediatrics, Case Western Reserve University School of Medicine, Cleveland, OH, United States
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85
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Bruchard M, Ghiringhelli F. Effect of Pharmaceutical Compounds on Myeloid-Derived Suppressor Cells. Oncoimmunology 2018. [DOI: 10.1007/978-3-319-62431-0_11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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86
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Millrud CR, Mehmeti M, Leandersson K. Docetaxel promotes the generation of anti-tumorigenic human macrophages. Exp Cell Res 2017; 362:525-531. [PMID: 29269075 DOI: 10.1016/j.yexcr.2017.12.018] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 12/15/2017] [Accepted: 12/18/2017] [Indexed: 12/20/2022]
Abstract
The taxanes Docetaxel and Paclitaxel are two of the standard chemotherapies for patients with metastatic breast cancer. The functional effect of Docetaxel and Paclitaxel on human innate immune cells of the myeloid lineage is not well established, nor is the effects these agents have on differentiation of monocytes into macrophages and dendritic cells. Therefore, the aim with this project was to determine the effects of Docetaxel and Paclitaxel on primary human monocyte differentiation, activation and function. For this purpose, primary human monocytes were isolated from healthy donors and cultured with or without Docetaxel and Paclitaxel. We found that Docetaxel promoted the differentiation of primary human monocytes into pro-inflammatory macrophages with an M1 phenotype and an ability to present antigens to T cells. Monocytes treated with Docetaxel also displayed an elevated secretion of IL-8 and IL-1β, but did not promote generation of monocytic myeloid-derived suppressor cells. In conclusion, Docetaxel appears to have an immune stimulatory effect that would be beneficial for an anti-tumorigenic type of immune response, whereas Paclitaxel seems to have less effect on myeloid cells.
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Affiliation(s)
- Camilla Rydberg Millrud
- Cancer Immunology, Department of Translational Medicine, Lund University, Skånes University Hospital, Malmö, Sweden.
| | - Meliha Mehmeti
- Cancer Immunology, Department of Translational Medicine, Lund University, Skånes University Hospital, Malmö, Sweden
| | - Karin Leandersson
- Cancer Immunology, Department of Translational Medicine, Lund University, Skånes University Hospital, Malmö, Sweden
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87
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Myeloid-Derived Suppressor Cells in the Tumor Microenvironment: Current Knowledge and Future Perspectives. Arch Immunol Ther Exp (Warsz) 2017; 66:113-123. [PMID: 29032490 DOI: 10.1007/s00005-017-0492-4] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Accepted: 09/05/2017] [Indexed: 01/08/2023]
Abstract
The current knowledge on tumor-infiltrating myeloid-derived suppressor cells (MDSCs) is based mainly on the extensive work performed in murine models. Data obtained for human counterparts are generated on the basis of tumor analysis from patient samples. Both sources of information led to determination of the main suppressive mechanisms used by these cell subsets in tumor-bearing hosts. As a result of the identification of protein targets responsible for MDSCs suppressive activity, different therapeutics agents have been used to eliminate/reduce their adverse effect. In the present work, we review the current knowledge on suppressive mechanisms of MDSCs and therapeutic treatments that interfere with their differentiation, expansion or activity. Based on the accumulation of new evidences supporting their importance for tumor progression and metastasis, the interest in these cell types is increasing. We revise the methods of MDSC generation/differentiation ex vivo that may help in overcoming problems associated with limited numbers of cells available from animals and patients for their study.
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88
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Metronomic chemotherapy and immunotherapy in cancer treatment. Cancer Lett 2017; 400:282-292. [PMID: 28189534 DOI: 10.1016/j.canlet.2017.01.040] [Citation(s) in RCA: 100] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2016] [Revised: 01/26/2017] [Accepted: 01/26/2017] [Indexed: 12/14/2022]
Abstract
Systemic chemotherapy given at maximum tolerated doses (MTD) has been the mainstay of cancer treatment for more than half a century. In some chemosensitive diseases such as hematologic malignancies and solid tumors, MTD has led to complete remission and even cure. The combination of maintenance therapy and standard MTD also can generate good disease control; however, resistance to chemotherapy and disease metastasis still remain major obstacles to successful cancer treatment in the majority of advanced tumors. Metronomic chemotherapy, defined as frequent administration of chemotherapeutic agents at a non-toxic dose without extended rest periods, was originally designed to overcome drug resistance by shifting the therapeutic target from tumor cells to tumor endothelial cells. Metronomic chemotherapy also exerts anti-tumor effects on the immune system (immunomodulation) and tumor cells. The goal of immunotherapy is to enhance host anti-tumor immunities. Adding immunomodulators such as metronomic chemotherapy to immunotherapy can improve the clinical outcomes in a synergistic manner. Here, we review the anti-tumor mechanisms of metronomic chemotherapy and the preliminary research addressing the combination of immunotherapy and metronomic chemotherapy for cancer treatment in animal models and in clinical setting.
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89
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Gao Q, Jiang J, Chu Z, Lin H, Zhou X, Liang X. Arsenic trioxide inhibits tumor-induced myeloid-derived suppressor cells and enhances T-cell activity. Oncol Lett 2017; 13:2141-2150. [PMID: 28454374 PMCID: PMC5403453 DOI: 10.3892/ol.2017.5679] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Accepted: 12/08/2016] [Indexed: 12/21/2022] Open
Abstract
Myeloid-derived suppressor cells (MDSCs), one of the major orchestrators of the immunosuppressive network, are associated with immune suppression and considered a prime target for cancer immunotherapy. At present, various strategies have been explored to deplete and/or inactivate MDSCs in vivo. In this study, we investigated the effect of arsenic trioxide (ATO) on MDSCs derived from tumor-bearing mice. This study examined the in vitro and in vivo effects of ATO administration on MDSCs from C57/j mice bearing either the B16 or H22 tumor. The MDSCs were then characterized for phenotype, gene expression and function. Administration with ATO in vitro significantly induced MDSC differentiation, inhibited their proliferation and triggered apoptosis. Treatment with ATO in these murine tumor models significantly inhibited tumor growth and splenomegaly, decreased the percentages of MDSCs in the spleen, promoted their differentiation, reduced tumor necrosis factor-α and interleukin-10 levels and weakened the immune inhibition activity of MDSCs on T cells. In addition, we observed the underlying mechanism involved in the regulation of MDSCs by ATO, which included a panel of cytokines and signaling pathways. The findings showed the immunoregulatory effects of ATO by inducing apoptosis, promoting differentiation and inhibiting the function of MDSCs, suggesting that ATO has potential clinical benefit as it selectively attenuates MDSC-induced immunosuppression.
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Affiliation(s)
- Qingmin Gao
- Department of Oncology, Huashan Hospital, Fudan University, Shanghai 200040, P.R. China.,Department of Oncology, Shanghai Medical School, Fudan University, Shanghai 200040, P.R. China
| | - Jingwei Jiang
- Department of Oncology, Huashan Hospital, Fudan University, Shanghai 200040, P.R. China.,Department of Oncology, Shanghai Medical School, Fudan University, Shanghai 200040, P.R. China
| | - Zhaohui Chu
- Department of Oncology, Huashan Hospital, Fudan University, Shanghai 200040, P.R. China.,Department of Oncology, Shanghai Medical School, Fudan University, Shanghai 200040, P.R. China
| | - Hao Lin
- Department of Oncology, Huashan Hospital, Fudan University, Shanghai 200040, P.R. China.,Department of Oncology, Shanghai Medical School, Fudan University, Shanghai 200040, P.R. China
| | - Xinli Zhou
- Department of Oncology, Huashan Hospital, Fudan University, Shanghai 200040, P.R. China.,Department of Oncology, Shanghai Medical School, Fudan University, Shanghai 200040, P.R. China
| | - Xiaohua Liang
- Department of Oncology, Huashan Hospital, Fudan University, Shanghai 200040, P.R. China.,Department of Oncology, Shanghai Medical School, Fudan University, Shanghai 200040, P.R. China
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90
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O'Connor MA, Rastad JL, Green WR. The Role of Myeloid-Derived Suppressor Cells in Viral Infection. Viral Immunol 2017; 30:82-97. [PMID: 28051364 DOI: 10.1089/vim.2016.0125] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Myeloid-derived suppressor cells (MDSCs) are heterogeneous immature myeloid cells that are well described as potent immune regulatory cells during human cancer and murine tumor models. Reports of MDSCs during viral infections remain limited, and their association with immunomodulation of viral diseases is still being defined. Here, we provide an overview of MDSCs or MDSC-like cells identified during viral infections, including murine viral models and human viral diseases. Understanding the similarities and/or differences of virally induced versus tumor-derived MDSCs will be important for designing future immunotherapeutic approaches.
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Affiliation(s)
- Megan A O'Connor
- 1 Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth , Lebanon , New Hampshire
| | - Jessica L Rastad
- 1 Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth , Lebanon , New Hampshire
| | - William R Green
- 1 Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth , Lebanon , New Hampshire.,2 Norris Cotton Cancer Center , Geisel School of Medicine at Dartmouth, Lebanon , New Hampshire
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91
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Anani W, Shurin MR. Targeting Myeloid-Derived Suppressor Cells in Cancer. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 1036:105-128. [PMID: 29275468 DOI: 10.1007/978-3-319-67577-0_8] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Myeloid derived suppressor cells (MDSC) represent only a minor fraction of circulating blood cells but play an important role in tumor formation and progression. They are a heterogeneous group of cells that influence the tumor microenvironment by depletion of amino acids, oxidative stress, decreased trafficking of antitumor effector cells, and increased regulatory T and regulatory dendritic cell responses. Investigational treatment strategies targeting MDSCs have attempted to inhibit MDSC development and expansion (stem cell factor blockade, modulate of cell signaling, and target MDSC migration and recruitment), inhibit MDSC function (nitric oxide inhibition and reactive oxygen and nitrogen species inhibition), differentiate MDSCs into more mature cells (Vitamins A and D, all-trans retinoic acid, interleukin-2, toll-like receptor 9 inhibitors, taxanes, beta-glucan particles, tumor-derived exosome inhibition, and very small size proteoliposomes), and destroy MDSCs (cytotoxic agents, ephrin A2 degradation, anti-interleukin 13, and histamine blockers). To date, there are no Food and Drug Administration approved therapies selectively targeting MDSCs, but such therapies are likely to be implemented in the future, due to the key role of MDSCs in antitumor immunity.
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Affiliation(s)
- Waseem Anani
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA.
| | - Michael R Shurin
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
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92
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Soliman HH. nab-Paclitaxel as a potential partner with checkpoint inhibitors in solid tumors. Onco Targets Ther 2016; 10:101-112. [PMID: 28053544 PMCID: PMC5189972 DOI: 10.2147/ott.s122974] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Tumors recognized by the host immune system are associated with better survival. However, the immune system is often suppressed in patients with established tumor burden. Stimulating the immune system to detect and kill tumor cells has been a challenge in cancer therapy for some time. Recently, novel cancer immunotherapies, such as immune checkpoint inhibitors, monoclonal antibodies, and vaccine therapies, have emerged as promising therapeutic approaches for many solid tumors. However, for some tumors, immunotherapy alone has not provided significant benefits, and some may even be fully resistant to immunotherapy. It has been suggested that the immune system may require "priming" before an immunotherapy can elicit an immune response. Although chemotherapies are believed to be immunosuppressive, when given at the right dose and sequence these agents may provide this "priming" effect for the immune system. In addition to direct cytotoxic killing of tumor cells, standard chemotherapeutic agents can elicit immunogenicity through various mechanisms. This review highlights the general immunomodulatory properties of chemotherapy agents. It also provides a rationale for combined therapy with nab-paclitaxel and immune checkpoint inhibitors. Recent clinical trial data with these combination regimens in solid tumors are presented, along with a summary of ongoing trials.
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Affiliation(s)
- Hatem H Soliman
- Department of Oncologic Sciences, Moffitt Cancer Center and Research Institute, University of South Florida, Tampa, FL, USA
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93
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The Role of Myeloid-Derived Suppressor Cells (MDSC) in Cancer Progression. Vaccines (Basel) 2016; 4:vaccines4040036. [PMID: 27827871 PMCID: PMC5192356 DOI: 10.3390/vaccines4040036] [Citation(s) in RCA: 256] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Revised: 10/04/2016] [Accepted: 10/31/2016] [Indexed: 12/27/2022] Open
Abstract
The immunosuppressive tumor microenvironment represents not only one of the key factors stimulating tumor progression but also a strong obstacle for efficient tumor immunotherapy. Immunosuppression was found to be associated with chronic inflammatory mediators including cytokines, chemokines and growth factors produced by cancer and stroma cells. Long-term intensive production of these factors induces the formation of myeloid-derived suppressor cells (MDSCs) representing one of the most important players mediating immunosuppression. Moreover, MDSCs could not only inhibit anti-tumor immune reactions but also directly stimulate tumor growth and metastasis. Therefore, understanding the mechanisms of their generation, expansion, recruitment and activation is required for the development of novel strategies for tumor immunotherapy.
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94
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Cheng YT, Yang CC, Shyur LF. Phytomedicine-Modulating oxidative stress and the tumor microenvironment for cancer therapy. Pharmacol Res 2016; 114:128-143. [PMID: 27794498 DOI: 10.1016/j.phrs.2016.10.022] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Revised: 10/21/2016] [Accepted: 10/24/2016] [Indexed: 12/18/2022]
Abstract
In spite of the current advances and achievements in systems biology and translational medicinal research, the current strategies for cancer therapy, such as radiotherapy, targeted therapy, immunotherapy and chemotherapy remain palliative or unsatisfactory due to tumor metastasis or recurrence after surgery/therapy, drug resistance, adverse side effects, and so on. Oxidative stress (OS) plays a critical role in chronic/acute inflammation, carcinogenesis, tumor progression, and tumor invasion/metastasis which is also attributed to the dynamic and complex properties and activities in the tumor microenvironment (TME). Re-educating or reprogramming tumor-associated stromal or immune cells in the TME provides an approach for restoring immune surveillance impaired by disease in cancer patients to increase overall survival and reduce drug resistance. Herbal medicines or plant-derived natural products have historically been a major source of anti-cancer drugs. Delving into the lore of herbal medicine may uncover new leads for anti-cancer drugs. Phytomedicines have been widely documented to directly or indirectly target multiple signaling pathways and networks in cancer cells. A combination of anti-cancer drugs and polypharmacological plant-derived extracts or compounds may offer a significant advantage in sensitizing the efficacy of monotherapy and overcoming drug-induced resistance in cancer patients. This review introduces several phytochemicals and phytoextracts derived from medicinal plants or dietary vegetables that have been studied for their efficacy in preclinical cancer models. We address the underlying modes of action of induction of OS and deregulation of TME-associated stromal cells, mediators and signaling pathways, and reference the related clinical investigations that look at the single or combination use of phytochemicals and phytoextracts to sensitize anti-cancer drug effects and/or overcome drug resistance.
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Affiliation(s)
- Yu-Ting Cheng
- Molecular and Biological Agricultural Sciences Program, Taiwan International Graduate Program, Academia Sinica, Taipei 115, Taiwan; Agricultural Biotechnology Research Center, Academia Sinica, Taipei 115, Taiwan; Graduate Institute of Biotechnology, National Chung Hsing University, Taichung 402, Taiwan
| | - Chun-Chih Yang
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei 115, Taiwan; Ph.D. Program for Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University and Academia Sinica, Taiwan
| | - Lie-Fen Shyur
- Molecular and Biological Agricultural Sciences Program, Taiwan International Graduate Program, Academia Sinica, Taipei 115, Taiwan; Agricultural Biotechnology Research Center, Academia Sinica, Taipei 115, Taiwan; Graduate Institute of Biotechnology, National Chung Hsing University, Taichung 402, Taiwan; Ph.D. Program for Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University and Academia Sinica, Taiwan; Graduate Institute of Pharmacognosy, Taipei Medical University, Taipei 110, Taiwan.
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95
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de Haas N, de Koning C, Spilgies L, de Vries IJM, Hato SV. Improving cancer immunotherapy by targeting the STATe of MDSCs. Oncoimmunology 2016; 5:e1196312. [PMID: 27622051 PMCID: PMC5006927 DOI: 10.1080/2162402x.2016.1196312] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Revised: 05/26/2016] [Accepted: 05/27/2016] [Indexed: 01/01/2023] Open
Abstract
Cancer immunotherapy is a promising therapeutic avenue; however, in practice its efficacy is hampered by an immunosuppressive tumor microenvironment that consists of suppressive cell types like myeloid-derived suppressor cells (MDSCs). Eradication or reprogramming of MDSCs could therefore enhance clinical responses to immunotherapy. Here, we review clinically available drugs that target MDSCs, often through inhibition of STAT signaling, which is essential for MDSC accumulation and suppressive functions. Interestingly, several drugs used for non-cancerous indications and natural compounds similarly inhibit MDSCs by STAT inhibition, but have fewer side effects than anticancer drugs. Therefore, they show great potential for combination strategies with immunotherapy.
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Affiliation(s)
- Nienke de Haas
- Department of Tumor Immunology, Institute for Molecular Life Sciences, Radboud university medical center , Nijmegen, The Netherlands
| | - Coco de Koning
- Department of Tumor Immunology, Institute for Molecular Life Sciences, Radboud university medical center , Nijmegen, The Netherlands
| | - Lisanne Spilgies
- Department of Tumor Immunology, Institute for Molecular Life Sciences, Radboud university medical center , Nijmegen, The Netherlands
| | - I Jolanda M de Vries
- Department of Tumor Immunology, Institute for Molecular Life Sciences, Radboud university medical center , Nijmegen, The Netherlands
| | - Stanleyson V Hato
- Department of Tumor Immunology, Institute for Molecular Life Sciences, Radboud university medical center , Nijmegen, The Netherlands
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96
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De Vlaeminck Y, González-Rascón A, Goyvaerts C, Breckpot K. Cancer-Associated Myeloid Regulatory Cells. Front Immunol 2016; 7:113. [PMID: 27065074 PMCID: PMC4810015 DOI: 10.3389/fimmu.2016.00113] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Accepted: 03/14/2016] [Indexed: 12/25/2022] Open
Abstract
Myeloid cells are critically involved in the pathophysiology of cancers. In the tumor microenvironment (TME), they comprise tumor-associated macrophages (TAMs), neutrophils (TANs), dendritic cells, and myeloid-derived suppressor cells, which are further subdivided into a monocytic subset and a granulocytic subset. Some of these myeloid cells, in particular TAMs and TANs, are divided into type 1 or type 2 cells, according to the paradigm of T helper type 1 or type 2 cells. Type 1-activated cells are generally characterized as cells that aid tumor rejection, while all other myeloid cells are shown to favor tumor progression. Moreover, these cells are often at the basis of resistance to various therapies. Much research has been devoted to study the biology of myeloid cells. This endeavor has proven to be challenging, as the markers used to categorize myeloid cells in the TME are not restricted to particular subsets. Also from a functional and metabolic point of view, myeloid cells share many features. Finally, myeloid cells are endowed with a certain level of plasticity, which further complicates studying them outside their environment. In this article, we challenge the exclusive use of cell markers to unambiguously identify myeloid cell subsets in the TME. We further propose to divide myeloid cells into myeloid regulatory or stimulatory cells according to their pro- or antitumor function, because we contend that for therapeutic purposes it is not targeting the cell subsets but rather targeting their protumor traits; hence, myeloid regulatory cells will push antitumor immunotherapy to the next level.
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Affiliation(s)
- Yannick De Vlaeminck
- Laboratory of Molecular and Cellular Therapy, Department of Biomedical Sciences, Vrije Universiteit Brussel , Brussels , Belgium
| | - Anna González-Rascón
- Laboratory of Molecular and Cellular Therapy, Department of Biomedical Sciences, Vrije Universiteit Brussel, Brussels, Belgium; Centro de Investigación en Alimentación y Desarrollo, Hermosillo, Mexico
| | - Cleo Goyvaerts
- Laboratory of Molecular and Cellular Therapy, Department of Biomedical Sciences, Vrije Universiteit Brussel , Brussels , Belgium
| | - Karine Breckpot
- Laboratory of Molecular and Cellular Therapy, Department of Biomedical Sciences, Vrije Universiteit Brussel , Brussels , Belgium
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97
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Suzuki S, Ishida T, Yoshikawa K, Ueda R. Current status of immunotherapy. Jpn J Clin Oncol 2016; 46:191-203. [PMID: 26819277 DOI: 10.1093/jjco/hyv201] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Accepted: 12/12/2015] [Indexed: 02/07/2023] Open
Abstract
The successful use of immune checkpoint inhibitors has been big breakthrough in the development of cancer immunotherapy. Anti-CTLA-4 monoclonal antibody, ipilimumab, is the first-approved immune checkpoint inhibitor and has shown durable objective responses for advanced melanoma beyond the effect of dacarbazine. Anti-PD-1 monoclonal antibodies, nivolumab and pembrolizumab, are other immune checkpoint inhibitors that have demonstrated more effective results than conventional drugs in clinical trials for a variety of advanced solid tumors including melanoma, non-small cell lung carcinoma and renal carcinoma. These studies have indicated that the enhancement of anti-cancer immunity by controlling the immune suppressive environment in cancer tissues is an important issue for the development of cancer immune-therapy. Accordingly, in recent years, the enthusiasm for research of cancer immunology has shifted to studies regarding the formation of the immune suppressive environment, immune suppression mechanisms in cancer tissues and the molecules and cells involved in these pathways. Novel findings from these studies might lead to the development of cancer immunotherapy based on control of the immune suppressive environment.
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Affiliation(s)
- Susumu Suzuki
- Department of Tumor Immunology, Aichi Medical University School of Medicine, Nagakute
| | - Takashi Ishida
- Department of Hematology and Oncology, Nagoya City University Graduate School of Medical Sciences, Mizuho-ku, Nagoya
| | - Kazuhiro Yoshikawa
- Center for Advanced Medical Research, Aichi Medical University School of Medicine, Nagakute, Aichi, Japan
| | - Ryuzo Ueda
- Department of Tumor Immunology, Aichi Medical University School of Medicine, Nagakute
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98
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Combinatorial prospects of nano-targeted chemoimmunotherapy. Biomaterials 2016; 83:308-20. [PMID: 26796043 DOI: 10.1016/j.biomaterials.2016.01.006] [Citation(s) in RCA: 94] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Revised: 12/29/2015] [Accepted: 01/01/2016] [Indexed: 11/23/2022]
Abstract
Despite the significant increase in our knowledge on cancer initiation and progression, and the development of novel cancer treatments, overall patient survival rates have thus far only marginally improved. However, it can be expected that lasting tumor control will be attainable for an increasing number of cancer patients in the foreseeable future, which is likely to be achieved by combining cancer chemotherapy with anticancer immunotherapy. A plethora of new cancer chemotherapy reagents are expected to become accessible to the clinic in the coming years which can then be used for efficient tumor debulking and aid in antigen exposure to the immune system. Durable remission and the eradication of micrometastases are likely to be achieved with specialized monoclonal antibodies and therapeutic cancer vaccines that modulate the immune system to overcome immunosuppression and kill distant cancer cells. Moreover, the method of drug delivery to tumors, stromal and immune cells is expected to shift largely from conventional 'free' drug molecules to encapsulated in targeted nano-vehicles, therapeutics often referred to or considered part of "nanomedicine". Several biocompatible nano-vehicles, such as metal-nanoparticles, biodegradable-nanoparticles, liposomes or dendrimers are potential candidates for targeted drug delivery but may also serve additional purposes. A dexterous combination of nanomedicine, cancer immunotherapy and chemotherapeutic engineering are likely to become the basis for new hope in the form of targeted cancer therapies that could attack tumors early in their development. One can envision nano-vehicles that would selectively deliver effective doses of chemotherapeutic agents to cancer cells while leaving healthy cells untouched. Furthermore, given that after chemotherapeutic treatment there often remains a limited number of chemo-resistant tumor cells, which go on to drive tumor progression, nano-vehicles could also be engineered to provoke an appropriate immune response to destroy these cells. Here, we discuss the potential of the combinatorial role of cancer chemotherapy, cancer immunotherapy and the prospective of nanotechnology for the targeted delivery of chemoimmunotherapeutic agents.
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99
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Chao CC, Kan D, Lo TH, Lu KS, Chien CL. Induction of neural differentiation in rat C6 glioma cells with taxol. Brain Behav 2015; 5:e00414. [PMID: 26665000 PMCID: PMC4667627 DOI: 10.1002/brb3.414] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Revised: 09/14/2015] [Accepted: 09/21/2015] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Glioblastoma is a common and aggressive type of primary brain tumor. Several anticancer drugs affect GBM (glioblastoma multiforme) cells on cell growth and morphology. Taxol is one of the widely used antineoplastic drugs against many types of solid tumors, such as breast, ovarian, and prostate cancers. However, the effect of taxol on GBM cells remains unclear and requires further investigation. METHODS Survival rate of C6 glioma cells under different taxol concentrations was quantified. To clarify the differentiation patterns of rat C6 glioma cells under taxol challenge, survived glioma cells were characterized by immunocytochemical, molecular biological, and cell biological approaches. RESULTS After taxol treatment, not only cell death but also morphological changes, including cell elongation, cellular processes thinning, irregular shapes, and fragmented nucleation or micronuclei, occurred in the survived C6 cells. Neural differentiation markers NFL (for neurons), β III-tubulin (for neurons), GFAP (for astrocytes), and CNPase (for oligodendrocytes) were detected in the taxol-treated C6 cells. Quantitative analysis suggested a significant increase in the percentage of neural differentiated cells. The results exhibited that taxol may trigger neural differentiation in C6 glioma cells. Increased expression of neural differentiation markers in C6 cells after taxol treatment suggest that some anticancer drugs could be applied to elimination of the malignant cancer cells as well as changing proliferation and differentiation status of tumor cells.
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Affiliation(s)
- Chuan-Chuan Chao
- Department of Anatomy and Cell Biology College of Medicine National Taiwan University Taipei Taiwan
| | - Daphne Kan
- Center of Genomic Medicine National Taiwan University Taipei Taiwan
| | - Ta-Hsuan Lo
- Center of Genomic Medicine National Taiwan University Taipei Taiwan
| | - Kuo-Shyan Lu
- Department of Anatomy and Cell Biology College of Medicine National Taiwan University Taipei Taiwan
| | - Chung-Liang Chien
- Department of Anatomy and Cell Biology College of Medicine National Taiwan University Taipei Taiwan; Center of Genomic Medicine National Taiwan University Taipei Taiwan
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100
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Martin K, Schreiner J, Zippelius A. Modulation of APC Function and Anti-Tumor Immunity by Anti-Cancer Drugs. Front Immunol 2015; 6:501. [PMID: 26483791 PMCID: PMC4586505 DOI: 10.3389/fimmu.2015.00501] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Accepted: 09/14/2015] [Indexed: 12/22/2022] Open
Abstract
Professional antigen-presenting cells (APCs), such as dendritic cells (DCs), are central to the initiation and regulation of anti-cancer immunity. However, in the immunosuppressive environment within a tumor APCs may antagonize anti-tumor immunity by inducing regulatory T cells (Tregs) or anergy of effector T cells due to lack of efficient costimulation. Hence, in an optimal setting, anti-cancer drugs have the power to reduce tumor size and thereby may induce the release of tumor antigens and, at the same time, modulate APC function toward efficient priming of antigen-specific effector T cells. Selected cytotoxic agents may revert APC dysfunction either by directly maturing DCs or through induction of immunogenic tumor cell death. Furthermore, specific cytotoxic agents may support adaptive immunity by selectively depleting regulatory subsets, such as Tregs or myeloid-derived suppressor cells. Perspectively, this will allow developing effective combination strategies with novel immunotherapies to exert complementary pressure on tumors via direct toxicity as well as immune activation. We, here, review our current knowledge on the capacity of anti-cancer drugs to modulate APC functions to promote durable anti-cancer immune responses.
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Affiliation(s)
- Kea Martin
- Department of Biomedicine, University Hospital Basel, University of Basel , Basel , Switzerland
| | - Jens Schreiner
- Department of Biomedicine, University Hospital Basel, University of Basel , Basel , Switzerland
| | - Alfred Zippelius
- Department of Biomedicine, University Hospital Basel, University of Basel , Basel , Switzerland ; Department of Medical Oncology, University Hospital Basel , Basel , Switzerland
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