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Kruglov O, Johnson LDS, Minic A, Jordan K, Uger RA, Wong M, Sievers EL, Shou Y, Akilov OE. The pivotal role of cytotoxic NK cells in mediating the therapeutic effect of anti-CD47 therapy in mycosis fungoides. Cancer Immunol Immunother 2021; 71:919-932. [PMID: 34519839 DOI: 10.1007/s00262-021-03051-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Accepted: 09/06/2021] [Indexed: 10/20/2022]
Abstract
CD47 is frequently overexpressed on tumor cells and is an attractive therapeutic target. The mechanism by which anti-CD47 immunotherapy eliminates cutaneous lymphoma has not been explored. We utilized CRISPR/Cas-9 CD47 knock-out, depletion of NK cells, and mice genetically deficient in IFN-γ to elucidate the mechanism of anti-CD47 therapy in a murine model of cutaneous T cell lymphoma (CTCL). CD47 was found to be a crucial factor for tumor progression since CD47 KO CTCL exhibited a delay in tumor growth. The treatment of CD47 WT murine CTCL with anti-CD47 antibodies led to a significant reduction in tumor burden as early as four days after the first treatment and accompanied by an increased percentage of cytotoxic NK cells at the tumor site. The depletion of NK cells resulted in marked attenuation of the anti-tumor effect of anti-CD47. Notably, the treatment of CD47 WT tumors in IFN-γ KO mice with anti-CD47 antibodies was efficient, demonstrating that IFN-γ was not required to mediate anti-CD47 therapy. We were able to potentiate the therapeutic effect of anti-CD47 therapy by IFN-α. That combination resulted in an increased number of cytotoxic CD107a + IFN-γ-NK1.1 cells and intermediate CD62L + NKG2a-NK1.1. Correlative data from a clinical trial (clinicaltrials.gov, NCT02890368) in patients with CTCL utilizing SIRPαFc to block CD47 confirmed our in vivo observations.
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Affiliation(s)
- Oleg Kruglov
- Cutaneous Lymphoma Program, Department of Dermatology, University of Pittsburgh, 3708 Fifth Avenue, 5th Floor, Suite 500.68, Pittsburgh, PA, 15213, USA
| | | | - Angela Minic
- Department of Immunology and Microbiology, University of Colorado, Aurora, CO, USA
| | - Kimberly Jordan
- Department of Immunology and Microbiology, University of Colorado, Aurora, CO, USA
| | | | - Mark Wong
- Trillium Therapeutics Inc, Mississauga, ON, Canada
| | | | - Yaping Shou
- Trillium Therapeutics Inc, Mississauga, ON, Canada
| | - Oleg E Akilov
- Cutaneous Lymphoma Program, Department of Dermatology, University of Pittsburgh, 3708 Fifth Avenue, 5th Floor, Suite 500.68, Pittsburgh, PA, 15213, USA.
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Chamseddine AN, Assi T, Mir O, Chouaib S. Modulating tumor-associated macrophages to enhance the efficacy of immune checkpoint inhibitors: A TAM-pting approach. Pharmacol Ther 2021; 231:107986. [PMID: 34481812 DOI: 10.1016/j.pharmthera.2021.107986] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 08/22/2021] [Accepted: 08/24/2021] [Indexed: 12/14/2022]
Abstract
Tumor-associated macrophages (TAM) plasticity and diversity are both essential hallmarks of the monocyte-macrophage lineage and the tumor-derived inflammation. TAM exemplify the perfect adaptable cell with dynamic phenotypic modifications that reflect changes in their functional polarization status. Under several tumor microenvironment (TME)-related cues, TAM shift their polarization, hence promoting or halting cancer progression. Immune checkpoint inhibitors (ICI) displayed unprecedented clinical responses in various refractory cancers; but only approximately a third of patients experienced durable responses. It is, therefore, crucial to enhance the response rate of immunotherapy. Several mechanisms of resistance to ICI have been elucidated including TAM role with its essential immunosuppressive functions that reduce both anti-tumor immunity and the subsequent ICI efficacy. In the past few years, thorough research has led to a better understanding of TAM biology and innovative approaches can now be adapted through targeting macrophages' recruitment axis as well as TAM activation and polarization status within the TME. Some of these therapeutic strategies are currently being evaluated in several clinical trials in association with ICI agents. This combination between TAM modulation and ICI allows targeting TAM intrinsic immunosuppressive functions and tumor-promoting factors as well as overcoming ICI resistance. Hence, such strategies, with a better understanding of the mechanisms driving TAM modulation, may have the potential to optimize ICI efficacy.
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Affiliation(s)
- Ali N Chamseddine
- Department of Medical Oncology, Gustave Roussy, F-94805, Villejuif, France; Department of Biostatistics and Epidemiology, CESP INSERM U1018, OncoStat, Gustave Roussy, F-94805, Villejuif, France.
| | - Tarek Assi
- Department of Medical Oncology, Gustave Roussy, F-94805, Villejuif, France
| | - Olivier Mir
- Department of Medical Oncology, Gustave Roussy, F-94805, Villejuif, France; Department of Pharmacology, Gustave Roussy, F-94805, Villejuif, France; Department of Ambulatory Care, Gustave Roussy, F-94805, Villejuif, France
| | - Salem Chouaib
- INSERM UMR 1186, Integrative Tumor Immunology and Genetic Oncology, Gustave Roussy, F-94805, Villejuif, France
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203
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Wang Z, Hu N, Li X, Wang H, Ren C, Qiao C, Chen G, Wang J, Zhou L, Wu J, Zhang D, Feng J, Shen B, Peng H, Luo L. Selection and Characterization of FD164, a High-Affinity Signal Regulatory Protein α Variant with Balanced Safety and Effectiveness, from a Targeted Epitope Mammalian Cell-Displayed Antibody Library. Mol Pharmacol 2021; 100:193-202. [PMID: 34315811 DOI: 10.1124/molpharm.120.000202] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 06/11/2021] [Indexed: 11/22/2022] Open
Abstract
Phagocytic resistance plays a key role in tumor-mediated immune escape, so phagocytosis immune checkpoints are a potential target for cancer immunotherapy. CD47 is one of the important phagocytosis immune checkpoints; thus, blocking the interaction between CD47 and signal regulatory protein α (SIRPα) may provide new options for cancer treatment. Using computer-aided targeted epitope mammalian cell-displayed antibody library, we screened and obtained an engineered SIRPα variant fragment crystallizable fusion protein, FD164, with higher CD47-binding activity than wild-type SIRPα Compared with wild-type SIRPα, FD164 has approximately 3-fold higher affinity for binding to CD47, which further enhanced its phagocytic effect in vitro and tumor suppressor activity in vivo. FD164 maintains the similar antitumor activity of the clinical research drug Hu5F9 in the mouse xenograft model. Furthermore, FD164 combined with rituximab can significantly improve the effect of single-agent therapy. On the other hand, compared with Hu5F9, FD164 does not cause hemagglutination, and its ability to bind to red blood cells or white blood cells is weaker at the same concentration. Finally, it was confirmed by computer structure prediction and alanine scanning experiments that the N45, E47, 52TEVYVK58, K60, 115EVTELTRE122, and E124 residues of CD47 are important for SIRPα or FD164 recognition. Briefly, we obtained a high-affinity SIRPα variant FD164 with balanced safety and effectiveness. SIGNIFICANCE STATEMENT: Up to now, few clinically marketed drugs targeting CD47 have been determined to be effective and safe. FD164, a potential signal regulatory protein α variant fragment crystallizable protein with balanced safety and effectiveness, could provide a reference for the development of antitumor drugs.
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MESH Headings
- Animals
- Antibodies, Monoclonal, Humanized/adverse effects
- Antibodies, Monoclonal, Humanized/therapeutic use
- Antigens, Differentiation/adverse effects
- Antigens, Differentiation/chemistry
- Antigens, Differentiation/genetics
- Antigens, Differentiation/immunology
- Antineoplastic Combined Chemotherapy Protocols/therapeutic use
- Burkitt Lymphoma/drug therapy
- Burkitt Lymphoma/immunology
- Burkitt Lymphoma/pathology
- CD47 Antigen/chemistry
- CD47 Antigen/immunology
- CHO Cells
- Cell Line
- Cricetulus
- Drug Design
- Epitopes/chemistry
- Epitopes/genetics
- Epitopes/immunology
- Hemagglutination/drug effects
- Immunotherapy
- Mice, SCID
- Models, Molecular
- Phagocytosis/drug effects
- Phagocytosis/immunology
- Receptors, Immunologic/chemistry
- Receptors, Immunologic/genetics
- Receptors, Immunologic/immunology
- Recombinant Fusion Proteins/adverse effects
- Recombinant Fusion Proteins/chemistry
- Recombinant Fusion Proteins/genetics
- Recombinant Fusion Proteins/immunology
- Rituximab/therapeutic use
- Tumor Burden/drug effects
- Xenograft Model Antitumor Assays
- Mice
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Affiliation(s)
- Zhihong Wang
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China (Z.W., N.H., X.L., C.Q., G.C., J.W., L.Z., J.W., D.Z., J.F., B.S., L.L.); School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China (H.W., H.P.); Department of Operational Medicine, Tianjin Institute of Environmental & Operational Medicine, Tianjin, China (H.P.); Department of Hematology, Fourth Medical Center, Chinese PLA General Hospital, Beijing, China (H.W.); and Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, China (C.R.)
| | - Naijing Hu
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China (Z.W., N.H., X.L., C.Q., G.C., J.W., L.Z., J.W., D.Z., J.F., B.S., L.L.); School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China (H.W., H.P.); Department of Operational Medicine, Tianjin Institute of Environmental & Operational Medicine, Tianjin, China (H.P.); Department of Hematology, Fourth Medical Center, Chinese PLA General Hospital, Beijing, China (H.W.); and Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, China (C.R.)
| | - Xinying Li
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China (Z.W., N.H., X.L., C.Q., G.C., J.W., L.Z., J.W., D.Z., J.F., B.S., L.L.); School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China (H.W., H.P.); Department of Operational Medicine, Tianjin Institute of Environmental & Operational Medicine, Tianjin, China (H.P.); Department of Hematology, Fourth Medical Center, Chinese PLA General Hospital, Beijing, China (H.W.); and Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, China (C.R.)
| | - Haitao Wang
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China (Z.W., N.H., X.L., C.Q., G.C., J.W., L.Z., J.W., D.Z., J.F., B.S., L.L.); School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China (H.W., H.P.); Department of Operational Medicine, Tianjin Institute of Environmental & Operational Medicine, Tianjin, China (H.P.); Department of Hematology, Fourth Medical Center, Chinese PLA General Hospital, Beijing, China (H.W.); and Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, China (C.R.)
| | - Caiping Ren
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China (Z.W., N.H., X.L., C.Q., G.C., J.W., L.Z., J.W., D.Z., J.F., B.S., L.L.); School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China (H.W., H.P.); Department of Operational Medicine, Tianjin Institute of Environmental & Operational Medicine, Tianjin, China (H.P.); Department of Hematology, Fourth Medical Center, Chinese PLA General Hospital, Beijing, China (H.W.); and Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, China (C.R.)
| | - Chunxia Qiao
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China (Z.W., N.H., X.L., C.Q., G.C., J.W., L.Z., J.W., D.Z., J.F., B.S., L.L.); School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China (H.W., H.P.); Department of Operational Medicine, Tianjin Institute of Environmental & Operational Medicine, Tianjin, China (H.P.); Department of Hematology, Fourth Medical Center, Chinese PLA General Hospital, Beijing, China (H.W.); and Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, China (C.R.)
| | - Guojiang Chen
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China (Z.W., N.H., X.L., C.Q., G.C., J.W., L.Z., J.W., D.Z., J.F., B.S., L.L.); School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China (H.W., H.P.); Department of Operational Medicine, Tianjin Institute of Environmental & Operational Medicine, Tianjin, China (H.P.); Department of Hematology, Fourth Medical Center, Chinese PLA General Hospital, Beijing, China (H.W.); and Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, China (C.R.)
| | - Jing Wang
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China (Z.W., N.H., X.L., C.Q., G.C., J.W., L.Z., J.W., D.Z., J.F., B.S., L.L.); School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China (H.W., H.P.); Department of Operational Medicine, Tianjin Institute of Environmental & Operational Medicine, Tianjin, China (H.P.); Department of Hematology, Fourth Medical Center, Chinese PLA General Hospital, Beijing, China (H.W.); and Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, China (C.R.)
| | - Liuzhong Zhou
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China (Z.W., N.H., X.L., C.Q., G.C., J.W., L.Z., J.W., D.Z., J.F., B.S., L.L.); School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China (H.W., H.P.); Department of Operational Medicine, Tianjin Institute of Environmental & Operational Medicine, Tianjin, China (H.P.); Department of Hematology, Fourth Medical Center, Chinese PLA General Hospital, Beijing, China (H.W.); and Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, China (C.R.)
| | - Jiaguo Wu
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China (Z.W., N.H., X.L., C.Q., G.C., J.W., L.Z., J.W., D.Z., J.F., B.S., L.L.); School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China (H.W., H.P.); Department of Operational Medicine, Tianjin Institute of Environmental & Operational Medicine, Tianjin, China (H.P.); Department of Hematology, Fourth Medical Center, Chinese PLA General Hospital, Beijing, China (H.W.); and Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, China (C.R.)
| | - Dingmu Zhang
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China (Z.W., N.H., X.L., C.Q., G.C., J.W., L.Z., J.W., D.Z., J.F., B.S., L.L.); School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China (H.W., H.P.); Department of Operational Medicine, Tianjin Institute of Environmental & Operational Medicine, Tianjin, China (H.P.); Department of Hematology, Fourth Medical Center, Chinese PLA General Hospital, Beijing, China (H.W.); and Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, China (C.R.)
| | - Jiannan Feng
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China (Z.W., N.H., X.L., C.Q., G.C., J.W., L.Z., J.W., D.Z., J.F., B.S., L.L.); School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China (H.W., H.P.); Department of Operational Medicine, Tianjin Institute of Environmental & Operational Medicine, Tianjin, China (H.P.); Department of Hematology, Fourth Medical Center, Chinese PLA General Hospital, Beijing, China (H.W.); and Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, China (C.R.)
| | - Beifen Shen
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China (Z.W., N.H., X.L., C.Q., G.C., J.W., L.Z., J.W., D.Z., J.F., B.S., L.L.); School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China (H.W., H.P.); Department of Operational Medicine, Tianjin Institute of Environmental & Operational Medicine, Tianjin, China (H.P.); Department of Hematology, Fourth Medical Center, Chinese PLA General Hospital, Beijing, China (H.W.); and Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, China (C.R.)
| | - Hui Peng
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China (Z.W., N.H., X.L., C.Q., G.C., J.W., L.Z., J.W., D.Z., J.F., B.S., L.L.); School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China (H.W., H.P.); Department of Operational Medicine, Tianjin Institute of Environmental & Operational Medicine, Tianjin, China (H.P.); Department of Hematology, Fourth Medical Center, Chinese PLA General Hospital, Beijing, China (H.W.); and Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, China (C.R.)
| | - Longlong Luo
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China (Z.W., N.H., X.L., C.Q., G.C., J.W., L.Z., J.W., D.Z., J.F., B.S., L.L.); School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China (H.W., H.P.); Department of Operational Medicine, Tianjin Institute of Environmental & Operational Medicine, Tianjin, China (H.P.); Department of Hematology, Fourth Medical Center, Chinese PLA General Hospital, Beijing, China (H.W.); and Cancer Research Institute, School of Basic Medical Science, Central South University, Changsha, China (C.R.)
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204
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Nanoparticles to Target and Treat Macrophages: The Ockham's Concept? Pharmaceutics 2021; 13:pharmaceutics13091340. [PMID: 34575416 PMCID: PMC8469871 DOI: 10.3390/pharmaceutics13091340] [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: 07/15/2021] [Revised: 08/15/2021] [Accepted: 08/19/2021] [Indexed: 12/19/2022] Open
Abstract
Nanoparticles are nanomaterials with three external nanoscale dimensions and an average size ranging from 1 to 1000 nm. Nanoparticles have gained notoriety in technological advances due to their tunable physical, chemical, and biological characteristics. However, the administration of functionalized nanoparticles to living beings is still challenging due to the rapid detection and blood and tissue clearance by the mononuclear phagocytic system. The major exponent of this system is the macrophage. Regardless the nanomaterial composition, macrophages can detect and incorporate foreign bodies by phagocytosis. Therefore, the simplest explanation is that any injected nanoparticle will be probably taken up by macrophages. This explains, in part, the natural accumulation of most nanoparticles in the spleen, lymph nodes, and liver (the main organs of the mononuclear phagocytic system). For this reason, recent investigations are devoted to design nanoparticles for specific macrophage targeting in diseased tissues. The aim of this review is to describe current strategies for the design of nanoparticles to target macrophages and to modulate their immunological function involved in different diseases with special emphasis on chronic inflammation, tissue regeneration, and cancer.
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205
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Wang SK, Xue Y, Cepko CL. Augmentation of CD47/SIRPα signaling protects cones in genetic models of retinal degeneration. JCI Insight 2021; 6:150796. [PMID: 34197341 PMCID: PMC8409989 DOI: 10.1172/jci.insight.150796] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Accepted: 06/30/2021] [Indexed: 11/17/2022] Open
Abstract
Inherited retinal diseases, such as retinitis pigmentosa (RP), can be caused by thousands of different mutations, a small number of which have been successfully treated with gene replacement. However, this approach has yet to scale and may not be feasible in many cases, highlighting the need for interventions that could benefit more patients. Here, we found that microglial phagocytosis is upregulated during cone degeneration in RP, suggesting that expression of "don't-eat-me" signals such as CD47 might confer protection to cones. To test this, we delivered an adeno-associated viral (AAV) vector expressing CD47 on cones, which promoted cone survival in 3 mouse models of RP and preserved visual function. Cone rescue with CD47 required a known interacting protein, signal regulatory protein α (SIRPα), but not an alternative interacting protein, thrombospondin-1 (TSP1). Despite the correlation between increased microglial phagocytosis and cone death, microglia were dispensable for the prosurvival activity of CD47, suggesting that CD47 interacts with SIRPα on nonmicroglial cells to alleviate degeneration. These findings establish augmentation of CD47/SIRPα signaling as a potential treatment strategy for RP and possibly other forms of neurodegeneration.
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206
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Peluso MO, Adam A, Armet CM, Zhang L, O'Connor RW, Lee BH, Lake AC, Normant E, Chappel SC, Hill JA, Palombella VJ, Holland PM, Paterson AM. The Fully human anti-CD47 antibody SRF231 exerts dual-mechanism antitumor activity via engagement of the activating receptor CD32a. J Immunother Cancer 2021; 8:jitc-2019-000413. [PMID: 32345627 PMCID: PMC7213910 DOI: 10.1136/jitc-2019-000413] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/21/2020] [Indexed: 02/04/2023] Open
Abstract
Background CD47 is a broadly expressed cell surface glycoprotein associated with immune evasion. Interaction with the inhibitory receptor signal regulatory protein alpha (SIRPα), primarily expressed on myeloid cells, normally serves to restrict effector function (eg, phagocytosis and immune cell homeostasis). CD47/SIRPα antagonists, commonly referred to as ‘macrophage checkpoint’ inhibitors, are being developed as cancer interventions. SRF231 is an investigational fully human IgG4 anti-CD47 antibody that is currently under evaluation in a phase 1 clinical trial. The development and preclinical characterization of SRF231 are reported here. Methods SRF231 was characterized in assays designed to probe CD47/SIRPα blocking potential and effects on red blood cell (RBC) phagocytosis and agglutination. Additionally, SRF231-mediated phagocytosis and cell death were assessed in macrophage:tumor cell in vitro coculture systems. Further mechanistic studies were conducted within these coculture systems to ascertain the dependency of SRF231-mediated antitumor activity on Fc receptor engagement vs CD47/SIRPα blockade. In vivo, SRF231 was evaluated in a variety of hematologic xenograft models, and the mechanism of antitumor activity was assessed using cytokine and macrophage infiltration analyses following SRF231 treatment. Results SRF231 binds CD47 and disrupts the CD47/SIRPα interaction without causing hemagglutination or RBC phagocytosis. SRF231 exerts antitumor activity in vitro through both phagocytosis and cell death in a manner dependent on the activating Fc-gamma receptor (FcγR), CD32a. Through its Fc domain, SRF231 engagement with macrophage-derived CD32a serves dual purposes by eliciting FcγR-mediated phagocytosis of cancer cells and acting as a scaffold to drive CD47-mediated death signaling into tumor cells. Robust antitumor activity occurs across multiple hematologic xenograft models either as a single agent or in combination with rituximab. In tumor-bearing mice, SRF231 increases tumor macrophage infiltration and induction of the macrophage cytokines, mouse chemoattractant protein 1 and macrophage inflammatory protein 1 alpha. Macrophage depletion results in diminished SRF231 antitumor activity, underscoring a mechanistic role for macrophage engagement by SRF231. Conclusion SRF231 elicits antitumor activity via apoptosis and phagocytosis involving macrophage engagement in a manner dependent on the FcγR, CD32a.
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Affiliation(s)
| | - Ammar Adam
- Surface Oncology, Inc, Cambridge, Massachusetts, USA
| | | | - Li Zhang
- Surface Oncology, Inc, Cambridge, Massachusetts, USA
| | | | | | - Andrew C Lake
- Surface Oncology, Inc, Cambridge, Massachusetts, USA
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207
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Cui Z, Xu D, Zhang F, Sun J, Song L, Ye W, Zeng J, Zhou M, Ruan Z, Zhang L, Ren R. CD47 blockade enhances therapeutic efficacy of cisplatin against lung carcinoma in a murine model. Exp Cell Res 2021; 405:112677. [PMID: 34111474 DOI: 10.1016/j.yexcr.2021.112677] [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: 01/30/2021] [Revised: 04/28/2021] [Accepted: 05/24/2021] [Indexed: 12/26/2022]
Abstract
Cisplatin (CDDP) is the first generation of platinum-based drug and is widely used to treat many cancers due to its potency. The present study aims to explore the effects of CDDP on lung carcinoma and its relationship with macrophage phagocytosis. In in vitro study, murine and human lung cancer cell lines were applied and treated with CDDP, CD47 antibody (aCD47), or CDDP plus aCD47. In in vivo study, a tumor xenograft animal model was treated with CDDP, aCD47, or CDDP plus aCD47. Real-time PCR was applied to determine the mRNA expressions. Enzyme-linked immunosorbent assay (ELISA), Western blotting, and Immunofluorescent staining were applied to determine the protein expressions. Flow cytometry was applied to analyze cell apoptosis, phagocytosis, and specific cell populations. CDDP enhanced the expressions of CD47 in lung cancer cells. Interestingly, the blockage of CD47 enhanced the macrophages' phagocytic activity on the CDDP-treated tumor cells. The treatment of CDDP and aCD47 exhibited anti-tumor effects and prolonged the LLC tumor-bearing mice survival time. Mechanistic studies revealed that the treatment of CDDP and aCD47 regulated the phagocytic activity of macrophage, percentage of CD8+ T cells, and cytokines (tumor growth factor (TGF)-β, interleukin (IL)12p70, and interferon (IFN)-γ) in the tumor-bearing model. CD47 blockade enhanced therapeutic efficacy of cisplatin against lung carcinoma in vivo and in vitro.
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Affiliation(s)
- Zhilei Cui
- Department of Respiratory Medicine, XinHua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, China
| | - Dengfei Xu
- Department of Oncology, Henan Key Laboratory for Precision Medicine in Cancer, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Zhengzhou, 450003, Henan, China
| | - Fafu Zhang
- Department of Respiratory Medicine, XinHua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, China
| | - Jinyuan Sun
- Department of Respiratory Medicine, XinHua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, China
| | - Lin Song
- Department of Respiratory Medicine, XinHua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, China
| | - Wenjing Ye
- Department of Respiratory Medicine, XinHua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, China
| | - Junxiang Zeng
- Department of Laboratory Medicine, XinHua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, China
| | - Min Zhou
- Department of Respiratory Medicine, Jinshan Branch of the Sixth People's Hospital of Shanghai, Shanghai Jiaotong University, China
| | - Zhengshang Ruan
- Department of Anesthesiology and Surgical Intensive Care Unit, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China
| | - Linlin Zhang
- Department of Nuclear Medicine, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China.
| | - Rongrong Ren
- Department of Anesthesiology and Surgical Intensive Care Unit, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China.
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208
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Li YJ, Wu JY, Liu J, Xu W, Qiu X, Huang S, Hu XB, Xiang DX. Artificial exosomes for translational nanomedicine. J Nanobiotechnology 2021; 19:242. [PMID: 34384440 PMCID: PMC8359033 DOI: 10.1186/s12951-021-00986-2] [Citation(s) in RCA: 133] [Impact Index Per Article: 44.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Accepted: 08/04/2021] [Indexed: 12/15/2022] Open
Abstract
Exosomes are lipid bilayer membrane vesicles and are emerging as competent nanocarriers for drug delivery. The clinical translation of exosomes faces many challenges such as massive production, standard isolation, drug loading, stability and quality control. In recent years, artificial exosomes are emerging based on nanobiotechnology to overcome the limitations of natural exosomes. Major types of artificial exosomes include 'nanovesicles (NVs)', 'exosome-mimetic (EM)' and 'hybrid exosomes (HEs)', which are obtained by top-down, bottom-up and biohybrid strategies, respectively. Artificial exosomes are powerful alternatives to natural exosomes for drug delivery. Here, we outline recent advances in artificial exosomes through nanobiotechnology and discuss their strengths, limitations and future perspectives. The development of artificial exosomes holds great values for translational nanomedicine.
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Affiliation(s)
- Yong-Jiang Li
- Department of Pharmacy, The Second Xiangya Hospital, Central South University, 139 Middle Renmin Road, Changsha, 410011, China
- Hunan Provincial Engineering Research Centre of Translational Medicine and Innovative Drug, Changsha, China
- Institute of Clinical Pharmacy, Central South University, Changsha, China
| | - Jun-Yong Wu
- Department of Pharmacy, The Second Xiangya Hospital, Central South University, 139 Middle Renmin Road, Changsha, 410011, China
- Hunan Provincial Engineering Research Centre of Translational Medicine and Innovative Drug, Changsha, China
- Institute of Clinical Pharmacy, Central South University, Changsha, China
| | - Jihua Liu
- Department of Pharmacy, The Second Xiangya Hospital, Central South University, 139 Middle Renmin Road, Changsha, 410011, China
- Hunan Provincial Engineering Research Centre of Translational Medicine and Innovative Drug, Changsha, China
- Institute of Clinical Pharmacy, Central South University, Changsha, China
| | - Wenjie Xu
- Department of Pharmacy, The Second Xiangya Hospital, Central South University, 139 Middle Renmin Road, Changsha, 410011, China
- Hunan Provincial Engineering Research Centre of Translational Medicine and Innovative Drug, Changsha, China
- Institute of Clinical Pharmacy, Central South University, Changsha, China
| | - Xiaohan Qiu
- Department of Pharmacy, The Second Xiangya Hospital, Central South University, 139 Middle Renmin Road, Changsha, 410011, China
- Hunan Provincial Engineering Research Centre of Translational Medicine and Innovative Drug, Changsha, China
- Institute of Clinical Pharmacy, Central South University, Changsha, China
| | - Si Huang
- Department of Pharmacy, The Second Xiangya Hospital, Central South University, 139 Middle Renmin Road, Changsha, 410011, China
- Hunan Provincial Engineering Research Centre of Translational Medicine and Innovative Drug, Changsha, China
- Institute of Clinical Pharmacy, Central South University, Changsha, China
| | - Xiong-Bin Hu
- Department of Pharmacy, The Second Xiangya Hospital, Central South University, 139 Middle Renmin Road, Changsha, 410011, China
- Hunan Provincial Engineering Research Centre of Translational Medicine and Innovative Drug, Changsha, China
- Institute of Clinical Pharmacy, Central South University, Changsha, China
| | - Da-Xiong Xiang
- Department of Pharmacy, The Second Xiangya Hospital, Central South University, 139 Middle Renmin Road, Changsha, 410011, China.
- Hunan Provincial Engineering Research Centre of Translational Medicine and Innovative Drug, Changsha, China.
- Institute of Clinical Pharmacy, Central South University, Changsha, China.
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209
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Advances in culture methods for acute myeloid leukemia research. Oncoscience 2021; 8:82-90. [PMID: 34368398 PMCID: PMC8336936 DOI: 10.18632/oncoscience.540] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 07/28/2021] [Indexed: 12/18/2022] Open
Abstract
Conventional suspension cultures have been used in Acute Myeloid Leukemia (AML) research to study its biology as well as to screen any drug molecules, since its inception. Co-culture models of AML cells and other stromal cells as well as 3 dimensional (3D) culture models have gained much attention recently. These culture models try to recapitulate the tumour microenvironment and are found to be more suitable than suspension cultures. Though animal models are being used, they require more time, effort and facilities and hence, it is essential to develop cell culture models for high-throughput screening of drugs. Here, we discuss a new co-culture model developed by our research group involving acute myeloid leukemia (AML) cells and stimulated macrophages. Other studies on co-culture systems and relevance of 3D culture in leukemic research in understanding the pathology and treatment of leukemia are also reviewed.
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210
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Hayes AJ, Melrose J. Neural Tissue Homeostasis and Repair Is Regulated via CS and DS Proteoglycan Motifs. Front Cell Dev Biol 2021; 9:696640. [PMID: 34409033 PMCID: PMC8365427 DOI: 10.3389/fcell.2021.696640] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 07/13/2021] [Indexed: 01/04/2023] Open
Abstract
Chondroitin sulfate (CS) is the most abundant and widely distributed glycosaminoglycan (GAG) in the human body. As a component of proteoglycans (PGs) it has numerous roles in matrix stabilization and cellular regulation. This chapter highlights the roles of CS and CS-PGs in the central and peripheral nervous systems (CNS/PNS). CS has specific cell regulatory roles that control tissue function and homeostasis. The CNS/PNS contains a diverse range of CS-PGs which direct the development of embryonic neural axonal networks, and the responses of neural cell populations in mature tissues to traumatic injury. Following brain trauma and spinal cord injury, a stabilizing CS-PG-rich scar tissue is laid down at the defect site to protect neural tissues, which are amongst the softest tissues of the human body. Unfortunately, the CS concentrated in gliotic scars also inhibits neural outgrowth and functional recovery. CS has well known inhibitory properties over neural behavior, and animal models of CNS/PNS injury have demonstrated that selective degradation of CS using chondroitinase improves neuronal functional recovery. CS-PGs are present diffusely in the CNS but also form denser regions of extracellular matrix termed perineuronal nets which surround neurons. Hyaluronan is immobilized in hyalectan CS-PG aggregates in these perineural structures, which provide neural protection, synapse, and neural plasticity, and have roles in memory and cognitive learning. Despite the generally inhibitory cues delivered by CS-A and CS-C, some CS-PGs containing highly charged CS disaccharides (CS-D, CS-E) or dermatan sulfate (DS) disaccharides that promote neural outgrowth and functional recovery. CS/DS thus has varied cell regulatory properties and structural ECM supportive roles in the CNS/PNS depending on the glycoform present and its location in tissue niches and specific cellular contexts. Studies on the fruit fly, Drosophila melanogaster and the nematode Caenorhabditis elegans have provided insightful information on neural interconnectivity and the role of the ECM and its PGs in neural development and in tissue morphogenesis in a whole organism environment.
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Affiliation(s)
- Anthony J. Hayes
- Bioimaging Research Hub, Cardiff School of Biosciences, Cardiff University, Wales, United Kingdom
| | - James Melrose
- Graduate School of Biomedical Engineering, University of New South Wales, Sydney, NSW, Australia
- Raymond Purves Bone and Joint Research Laboratories, Kolling Institute of Medical Research, Royal North Shore Hospital and The Faculty of Medicine and Health, The University of Sydney, St. Leonard’s, NSW, Australia
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211
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Baumann N, Rösner T, Jansen JHM, Chan C, Marie Eichholz K, Klausz K, Winterberg D, Müller K, Humpe A, Burger R, Peipp M, Schewe DM, Kellner C, Leusen JHW, Valerius T. Enhancement of epidermal growth factor receptor antibody tumor immunotherapy by glutaminyl cyclase inhibition to interfere with CD47/signal regulatory protein alpha interactions. Cancer Sci 2021; 112:3029-3040. [PMID: 34058788 PMCID: PMC8353920 DOI: 10.1111/cas.14999] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 05/17/2021] [Accepted: 05/23/2021] [Indexed: 12/21/2022] Open
Abstract
Integrin associated protein (CD47) is an important target in immunotherapy, as it is expressed as a "don't eat me" signal on many tumor cells. Interference with its counter molecule signal regulatory protein alpha (SIRPα), expressed on myeloid cells, can be achieved with blocking Abs, but also by inhibiting the enzyme glutaminyl cyclase (QC) with small molecules. Glutaminyl cyclase inhibition reduces N-terminal pyro-glutamate formation of CD47 at the SIRPα binding site. Here, we investigated the impact of QC inhibition on myeloid effector cell-mediated tumor cell killing by epidermal growth factor receptor (EGFR) Abs and the influence of Ab isotypes. SEN177 is a QC inhibitor and did not interfere with EGFR Ab-mediated direct growth inhibition, complement-dependent cytotoxicity, or Ab-dependent cell-mediated cytotoxicity (ADCC) by mononuclear cells. However, binding of a human soluble SIRPα-Fc fusion protein to SEN177 treated cancer cells was significantly reduced in a dose-dependent manner, suggesting that pyro-glutamate formation of CD47 was affected. Glutaminyl cyclase inhibition in tumor cells translated into enhanced Ab-dependent cellular phagocytosis by macrophages and enhanced ADCC by polymorphonuclear neutrophilic granulocytes. Polymorphonuclear neutrophilic granulocyte-mediated ADCC was significantly more effective with EGFR Abs of human IgG2 or IgA2 isotypes than with IgG1 Abs, proposing that the selection of Ab isotypes could critically affect the efficacy of Ab therapy in the presence of QC inhibition. Importantly, QC inhibition also enhanced the therapeutic efficacy of EGFR Abs in vivo. Together, these results suggest a novel approach to specifically enhance myeloid effector cell-mediated efficacy of EGFR Abs by orally applicable small molecule QC inhibitors.
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Affiliation(s)
- Niklas Baumann
- Section for Stem Cell Transplantation and ImmunotherapyDepartment of Medicine IIChristian‐Albrechts‐University Kiel and University Medical Center Schleswig‐Holstein, Campus KielKielGermany
| | - Thies Rösner
- Section for Stem Cell Transplantation and ImmunotherapyDepartment of Medicine IIChristian‐Albrechts‐University Kiel and University Medical Center Schleswig‐Holstein, Campus KielKielGermany
| | - J. H. Marco Jansen
- Immunotherapy LaboratoryCenter for Translational ImmunologyUniversity Medical Center UtrechtUtrechtThe Netherlands
| | - Chilam Chan
- Immunotherapy LaboratoryCenter for Translational ImmunologyUniversity Medical Center UtrechtUtrechtThe Netherlands
| | - Klara Marie Eichholz
- Section for Stem Cell Transplantation and ImmunotherapyDepartment of Medicine IIChristian‐Albrechts‐University Kiel and University Medical Center Schleswig‐Holstein, Campus KielKielGermany
| | - Katja Klausz
- Section for Stem Cell Transplantation and ImmunotherapyDepartment of Medicine IIChristian‐Albrechts‐University Kiel and University Medical Center Schleswig‐Holstein, Campus KielKielGermany
| | - Dorothee Winterberg
- Pediatric Hematology/OncologyALL‐BFM Study GroupChristian‐Albrechts‐University Kiel and University Medical Center Schleswig‐Holstein, Campus KielKielGermany
| | - Kristina Müller
- Pediatric Hematology/OncologyALL‐BFM Study GroupChristian‐Albrechts‐University Kiel and University Medical Center Schleswig‐Holstein, Campus KielKielGermany
| | - Andreas Humpe
- Department of Transfusion Medicine, Cell Therapeutics and HemostaseologyUniversity HospitalLMU MunichMunichGermany
| | - Renate Burger
- Section for Stem Cell Transplantation and ImmunotherapyDepartment of Medicine IIChristian‐Albrechts‐University Kiel and University Medical Center Schleswig‐Holstein, Campus KielKielGermany
| | - Matthias Peipp
- Section for Stem Cell Transplantation and ImmunotherapyDepartment of Medicine IIChristian‐Albrechts‐University Kiel and University Medical Center Schleswig‐Holstein, Campus KielKielGermany
| | - Denis M. Schewe
- Pediatric Hematology/OncologyALL‐BFM Study GroupChristian‐Albrechts‐University Kiel and University Medical Center Schleswig‐Holstein, Campus KielKielGermany
| | - Christian Kellner
- Department of Transfusion Medicine, Cell Therapeutics and HemostaseologyUniversity HospitalLMU MunichMunichGermany
| | - Jeanette H. W. Leusen
- Immunotherapy LaboratoryCenter for Translational ImmunologyUniversity Medical Center UtrechtUtrechtThe Netherlands
| | - Thomas Valerius
- Section for Stem Cell Transplantation and ImmunotherapyDepartment of Medicine IIChristian‐Albrechts‐University Kiel and University Medical Center Schleswig‐Holstein, Campus KielKielGermany
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212
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Su CT, Ye JC. Emerging therapies for relapsed/refractory multiple myeloma: CAR-T and beyond. J Hematol Oncol 2021; 14:115. [PMID: 34301270 PMCID: PMC8299593 DOI: 10.1186/s13045-021-01109-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Accepted: 06/09/2021] [Indexed: 02/08/2023] Open
Abstract
The pace of innovation of multiple myeloma therapy in recent years is remarkable with the advent of monoclonal antibodies and the approval of novel agents with new mechanisms of action. Emerging therapies are on the horizon for clinical approval with significant implications in extending patient survival and advancing closer to the goal of a cure, especially in areas of immunotherapy such as chimeric antigen receptor T cells, bispecific T cell engager antibodies, antibody drug conjugates, newer generations of monoclonal antibodies, and small molecule inhibitor and modulators. This review provides an update of current myeloma therapeutics in active preclinical and early clinical development and discusses the mechanism of action of several classes of novel therapeutics.
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Affiliation(s)
- Christopher T Su
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI, 48109, USA
- Rogel Cancer Center, University of Michigan, Ann Arbor, MI, 48109, USA
| | - J Christine Ye
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI, 48109, USA.
- Rogel Cancer Center, University of Michigan, Ann Arbor, MI, 48109, USA.
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213
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Tang XY, Shi AP, Xiong YL, Zheng KF, Liu YJ, Shi XG, Jiang T, Zhao JB. Clinical Research on the Mechanisms Underlying Immune Checkpoints and Tumor Metastasis. Front Oncol 2021; 11:693321. [PMID: 34367975 PMCID: PMC8339928 DOI: 10.3389/fonc.2021.693321] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Accepted: 07/07/2021] [Indexed: 12/13/2022] Open
Abstract
This study highlights aspects of the latest clinical research conducted on the relationship between immune checkpoints and tumor metastasis. The overview of each immune checkpoint is divided into the following three sections: 1) structure and expression; 2) immune mechanism related to tumor metastasis; and 3) clinical research related to tumor metastasis. This review expands on the immunological mechanisms of 17 immune checkpoints, including TIM-3, CD47, and OX-40L, that mediate tumor metastasis; evidence shows that most of these immune checkpoints are expressed on the surface of T cells, which mainly exert immunomodulatory effects. Additionally, we have summarized the roles of these immune checkpoints in the diagnosis and treatment of metastatic tumors, as these checkpoints are considered common predictors of metastasis in various cancers such as prostate cancer, non-Hodgkin lymphoma, and melanoma. Moreover, certain immune checkpoints can be used in synergy with PD-1 and CTLA-4, along with the implementation of combination therapies such as LIGHT-VTR and anti-PD-1 antibodies. Presently, most monoclonal antibodies generated against immune checkpoints are under investigation as part of ongoing preclinical or clinical trials conducted to evaluate their efficacy and safety to establish a better combination treatment strategy; however, no significant progress has been made regarding monoclonal antibody targeting of CD28, VISTA, or VTCN1. The application of immune checkpoint inhibitors in early stage tumors to prevent tumor metastasis warrants further evidence; the immune-related adverse events should be considered before combination therapy. This review aims to elucidate the mechanisms of immune checkpoint and the clinical progress on their use in metastatic tumors reported over the last 5 years, which may provide insights into the development of novel therapeutic strategies that will assist with the utilization of various immune checkpoint inhibitors.
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Affiliation(s)
- Xi-Yang Tang
- Department of Thoracic Surgery, Tangdu Hospital, Air Force Medical University, Xi'an, China
| | - An-Ping Shi
- Department of Radiology & Functional and Molecular Imaging Key Lab of Shaanxi Province, Tangdu Hospital, Fourth Military Medical University (Air Force Medical University), Xi'an, China
| | - Yan-Lu Xiong
- Department of Thoracic Surgery, Tangdu Hospital, Air Force Medical University, Xi'an, China
| | - Kai-Fu Zheng
- Department of Thoracic Surgery, Tangdu Hospital, Air Force Medical University, Xi'an, China
| | - Yu-Jian Liu
- Department of Thoracic Surgery, Tangdu Hospital, Air Force Medical University, Xi'an, China
| | - Xian-Gui Shi
- College of Basic Medicine, Air Force Medical University, Xi'an, China
| | - Tao Jiang
- Department of Thoracic Surgery, Tangdu Hospital, Air Force Medical University, Xi'an, China
| | - Jin-Bo Zhao
- Department of Thoracic Surgery, Tangdu Hospital, Air Force Medical University, Xi'an, China
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214
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Xu Y, Li J, Tong B, Chen M, Liu X, Zhong W, Zhao J, Wang M. Positive tumour CD47 expression is an independent prognostic factor for recurrence in resected non-small cell lung cancer. ESMO Open 2021; 5:S2059-7029(20)32658-2. [PMID: 32830120 PMCID: PMC7445354 DOI: 10.1136/esmoopen-2020-000823] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 07/05/2020] [Accepted: 07/06/2020] [Indexed: 12/14/2022] Open
Abstract
Background Immunotherapy is a promising advance in oncology. Limited information exists regarding the interrelationship between CD47 expression and tumour-associated macrophage-related immuno-microenvironment in patients with non-small cell lung cancer (NSCLC). These factors may predict novel immunotherapy efficacy. Patients and methods CD47 and PD-L1 expression was retrospectively assessed in 191 resected NSCLC specimens via immunohistochemistry. Forty-six patients with pulmonary infectious diseases were enrolled as the control group. The infiltration of macrophages (M2 and M1) and CD8+ T-lymphocytes was evaluated via dual-immunofluorescence staining. Targeted DNA sequencing was performed on NSCLC specimens. Survival analysis was performed using the Cox model. Results Using 2+/3+ as a CD47 positive (CD47pos) expression cut-off, the prevalence of CD47pos expression in NSCLC was 33.0% (63/191), significantly higher than in pulmonary infectious diseases. CD47pos expression was significantly higher in female, non-smoking and adenocarcinoma patients (p=0.020, p<0.001 and p<0.001, respectively). Furthermore, CD47pos expression was significantly correlated with epidermal growth factor receptor mutation (p<0.001). The expression of CD47 (H-score) in NSCLC was negatively correlated with tumour PD-L1 expression (p=0.0346) and tumour mutation burden (p=0.0107). CD47pos expression was independently correlated with poor disease-free survival in patients with resected NSCLC in multivariate Cox regression analysis (p=0.035). Conclusion This study revealed the demographic, molecular and immuno-microenvironment characteristics of CD47 expression in NSCLC. We identified tumour CD47pos expression as an independent prognostic factor for recurrence in resected NSCLC. Our findings illustrate the potential of anti-CD47 treatment in NSCLC.
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Affiliation(s)
- Yan Xu
- Department of Respiratory and Critical Care Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Ji Li
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Bing Tong
- Department of Respiratory and Critical Care Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Minjiang Chen
- Department of Respiratory and Critical Care Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xiaoyan Liu
- Department of Respiratory and Critical Care Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Wei Zhong
- Department of Respiratory and Critical Care Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jing Zhao
- Department of Respiratory and Critical Care Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Mengzhao Wang
- Department of Respiratory and Critical Care Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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215
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Du J, Wan Z, Wang C, Lu F, Wei M, Wang D, Hao Q. Designer exosomes for targeted and efficient ferroptosis induction in cancer via chemo-photodynamic therapy. Theranostics 2021; 11:8185-8196. [PMID: 34373736 PMCID: PMC8344009 DOI: 10.7150/thno.59121] [Citation(s) in RCA: 92] [Impact Index Per Article: 30.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Accepted: 06/30/2021] [Indexed: 12/19/2022] Open
Abstract
Background: Efficient and specific induction of cell death in liver cancer is urgently needed. In this study, we aimed to design an exosome-based platform to deliver ferroptosis inducer (Erastin, Er) and photosensitizer (Rose Bengal, RB) into tumor tissues with high specificity. Methods: Exosome donor cells (HEK293T) were transfected with control or CD47-overexpressing plasmid. Exosomes were isolated and loaded with Er and RB via sonication method. Hepa1-6 cell xenograft C57BL/6 model was injected with control and engineered exosomes via tail vein. In vivo distribution of the injected exosomes was analyzed via tracking the fluorescence labeled exosomes. Photodynamic therapy was conducted by 532 nm laser irradiation. The therapeutic effects on hepatocellular carcinoma and toxic side-effects were systemically analyzed. Results: CD47 was efficiently loaded on the exosomes from the donor cells when CD47 was forced expressed by transfection. CD47 surface functionalization (ExosCD47) made the exosomes effectively escape the phagocytosis of mononuclear phagocyte system (MPS), and thus increased the distribution in tumor tissues. Erastin and RB could be effectively encapsulated into exosomes after sonication, and the drug-loaded exosomes (Er/RB@ExosCD47) strongly induced ferroptosis both in vitro and in vivo in tumor cells after irradiation of 532 nm laser. Moreover, compared with the control exosomes (Er/RB@ExosCtrl), Er/RB@ExosCD47 displayed much lower toxicity in liver. Conclusion: The engineered exosomes composed of CD47, Erastin, and Rose Bengal, induce obvious ferroptosis in hepatocellular carcinoma (HCC) with minimized toxicity in liver and kidney. The proposed exosomes would provide a promising strategy to treat types of malignant tumors.
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Affiliation(s)
- Jianbing Du
- Department of Hepatobiliary Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
- State Key Laboratory of Cancer Biology, Biotechnology Center, School of Pharmacy, Fourth Military Medical University, Xi'an, 710032, China
| | - Zhuo Wan
- Department of Hematology, Tangdu Hospital, Fourth Military Medical University, Xi'an, 710038, People's Republic of China
| | - Cong Wang
- Department of Clinical Laboratory, The Second People's Hospital of Hefei, Hefei, China
| | - Fan Lu
- State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an, 710032, People's Republic of China
| | - Mengying Wei
- State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, Xi'an, 710032, People's Republic of China
| | - Desheng Wang
- Department of Hepatobiliary Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Qiang Hao
- State Key Laboratory of Cancer Biology, Biotechnology Center, School of Pharmacy, Fourth Military Medical University, Xi'an, 710032, China
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Modulation of CD47-SIRPα innate immune checkpoint axis with Fc-function detuned anti-CD47 therapeutic antibody. Cancer Immunol Immunother 2021; 71:473-489. [PMID: 34247273 DOI: 10.1007/s00262-021-03010-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Accepted: 07/04/2021] [Indexed: 01/09/2023]
Abstract
Cluster of differentiation 47 (CD47) is a transmembrane protein ubiquitously expressed on human cells but overexpressed on many different tumor cells. The interaction of CD47 with signal-regulatory protein alpha (SIRPα) triggers a "don't eat me" signal to the macrophage, inhibiting phagocytosis. Thus, overexpression of CD47 enables tumor cells to escape from immune surveillance via the blockade of phagocytic mechanisms. We report here the development and characterization of CC-90002, a humanized anti-CD47 antibody. CC-90002 is unique among previously reported anti-CD47 bivalent antibodies that it does not promote hemagglutination while maintaining high-affinity binding to CD47 and inhibition of the CD47-SIRPα interaction. Studies in a panel of hematological cancer cell lines showed concentration-dependent CC-90002-mediated phagocytosis in acute lymphoblastic leukemia, acute myeloid leukemia (AML), lenalidomide-resistant multiple myeloma (MM) cell lines and AML cells from patients. In vivo studies with MM cell line-derived xenograft models established in immunodeficient mice demonstrated significant dose-dependent antitumor activity of CC-90002. Treatment with CC-90002 significantly prolonged survival in an HL-60-disseminated AML model. Mechanistic studies confirmed the binding of CC-90002 to tumor cells and concomitant recruitment of F4-80 positive macrophages into the tumor and an increase in expression of select chemokines and cytokines of murine origin. Furthermore, the role of macrophages in the CC-90002-mediated antitumor activity was demonstrated by transient depletion of macrophages with liposome-clodronate treatment. In non-human primates, CC-90002 displayed acceptable pharmacokinetic properties and a favorable toxicity profile. These data demonstrate the potential activity of CC-90002 across hematological malignancies and provided basis for clinical studies CC-90002-ST-001 (NCT02367196) and CC-90002-AML-001 (NCT02641002).
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217
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Yang Y, Yang Z, Yang Y. Potential Role of CD47-Directed Bispecific Antibodies in Cancer Immunotherapy. Front Immunol 2021; 12:686031. [PMID: 34305918 PMCID: PMC8297387 DOI: 10.3389/fimmu.2021.686031] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Accepted: 06/28/2021] [Indexed: 01/14/2023] Open
Abstract
The prosperity of immunological therapy for cancer has aroused enormous passion for exploiting the novel targets of cancer immunotherapy. After the approval of blinatumomab, a bispecific antibody (bsAb) targeting on CD19 for acute lymphoblastic leukemia, a few of CD47-targeted bsAbs for cancer immunotherapy, are currently in clinical research. In our review of CD47-targeted bsAbs, we described the fundamental of bsAbs. Then, we summarized the information of four undergoing phase I researches, reviewed the main toxicities relevant to CD47-targeted bsAb immunological therapy of on-target cytotoxicity to healthy cells and a remarkable antigen-sink. Finally, we described possible mechanisms of resistance to CD47-targeted bsAb therapy. More clinical researches are supposed to adequately confirm its security and efficacy in clinical practice.
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Affiliation(s)
- Yan Yang
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, China
| | - Zheng Yang
- College of Public Health, School of Public Health, Zhengzhou University, Zhengzhou, China
| | - Yun Yang
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, China
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218
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Shi M, Gu Y, Jin K, Fang H, Chen Y, Cao Y, Liu X, Lv K, He X, Lin C, Liu H, Li H, He H, Qin J, Li R, Zhang H, Zhang W. CD47 expression in gastric cancer clinical correlates and association with macrophage infiltration. Cancer Immunol Immunother 2021; 70:1831-1840. [PMID: 33389016 PMCID: PMC10992211 DOI: 10.1007/s00262-020-02806-2] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 11/21/2020] [Indexed: 12/19/2022]
Abstract
BACKGROUND CD47 has been identified as an innate immune checkpoint and found to be associated with inferior survival in various types of cancer. However, the critical role of CD47 in gastric cancer and its association with tumor associated macrophages remain unclear. METHODS Tumor tissues of gastric cancer from Zhongshan Hospital and data from GSE62254, GSE84437 and TCGA datasets were analyzed. Immunohistochemistry was performed to detect the expression of CD47, CD11c, CD163 and CD68 in gastric cancer tissues. Kaplan-Meier curves and Cox model were used for comparing the clinical outcomes of patients belonging to different subgroups. RESULTS Gastric cancer patients with high CD47 expression exhibited poor prognosis and inferior therapeutic responsiveness to fluorouracil-based adjuvant chemotherapy (ACT). A positive correlation was found between M1-polarized macrophage infiltration and CD47 expression in gastric cancer; however, the prognostic value of M1-polarized macrophages was attenuated in CD47-high gastric cancer patients. Moreover, we found that CD47 mRNA level was enriched in microsatellite-instable (MSI) subtype of gastric cancer and associated with ARID1A mutation and FGFR2 signaling pathway activation. CONCLUSIONS Aberrant CD47 expression represented an independent predictor for adverse survival outcome and ACT resistance in gastric cancer. Targeting CD47 might be a promising strategy for gastric cancer patients.
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Affiliation(s)
- Mingsu Shi
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Yun Gu
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Kaifeng Jin
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Hanji Fang
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Yifan Chen
- Department of Immunology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China
| | - Yifan Cao
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Xin Liu
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Kunpeng Lv
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Xudong He
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Chao Lin
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Hao Liu
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - He Li
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Hongyong He
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Jing Qin
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Ruochen Li
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, 200032, China.
| | - Heng Zhang
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, 200032, China.
| | - Weijuan Zhang
- Department of Immunology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China.
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219
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Zhao Q, Jiang D, Sun X, Mo Q, Chen S, Chen W, Gui R, Ma X. Biomimetic nanotherapy: core-shell structured nanocomplexes based on the neutrophil membrane for targeted therapy of lymphoma. J Nanobiotechnology 2021; 19:179. [PMID: 34120620 PMCID: PMC8201715 DOI: 10.1186/s12951-021-00922-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 06/01/2021] [Indexed: 12/24/2022] Open
Abstract
Background Non-Hodgkin’s lymphoma (NHL) is a malignant disease of lymphoid tissue. At present, chemotherapy is still the main method for the treatment of NHL. R-CHOP can significantly improve the survival rate of patients. Unfortunately, DOX is the main cytotoxic drug in R-CHOP and it can lead to adverse reactions. Therefore, it is particularly important to uncover new treatment options for NHL. Results In this study, a novel anti-tumor nanoparticle complex Nm@MSNs-DOX/SM was designed and constructed in this study. Mesoporous silica nanoparticles (MSNs) loaded with Doxorubicin (DOX) and anti-inflammatory drugs Shanzhiside methylester (SM) were used as the core of nanoparticles. Neutrophil membrane (Nm) can be coated with multiple nanonuclei as a shell. DOX combined with SM can enhance the anti-tumor effect, and induce apoptosis of lymphoma cells and inhibit the expression of inflammatory factors related to tumorigenesis depending on the regulation of Bcl-2 family-mediated mitochondrial pathways, such as TNF-α and IL-1β. Consequently, the tumor microenvironment (TME) was reshaped, and the anti-tumor effect of DOX was amplified. Besides, Nm has good biocompatibility and can enhance the EPR effect of Nm@MSNs-DOX/SM and increase the effect of active targeting tumors. Conclusions This suggests that the Nm-modified drug delivery system Nm@MSNs-DOX/SM is a promising targeted chemotherapy and anti-inflammatory therapy nanocomplex, and may be employed as a specific and efficient anti-Lymphoma therapy. ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s12951-021-00922-4.
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Affiliation(s)
- Qiangqiang Zhao
- Department of Blood Transfusion, The Third Xiangya Hospital, Central South University, Changsha, 410013, People's Republic of China.,Department of Hematology, The Qinghai Provincial People's Hospital, Xining, 810007, People's Republic of China
| | - Duanfeng Jiang
- Department of Hematology, The Third Xiangya Hospital, Central South University, Changsha, 410013, People's Republic of China
| | - Xiaoying Sun
- Nursing School, Soochow University, Suzhou, 215000, People's Republic of China.,Department of Emergency, The Qinghai Provincial People's Hospital, Xining, 810007, People's Republic of China
| | - Qiuyu Mo
- Department of Hematology, Affiliated Hospital of Guilin Medical University, Guilin, 541002, People's Republic of China
| | - Shaobin Chen
- Department of Hematology, The Qinghai Provincial People's Hospital, Xining, 810007, People's Republic of China
| | - Wansong Chen
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, People's Republic of China
| | - Rong Gui
- Department of Blood Transfusion, The Third Xiangya Hospital, Central South University, Changsha, 410013, People's Republic of China.
| | - Xianjun Ma
- Department of Blood Transfusion, Qilu Hospital of Shandong University, Jinan, 250012, People's Republic of China.
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220
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Wang J, Zhang H, Yin X, Bian Y. Anti-CD47 antibody synergizes with cisplatin against laryngeal cancer by enhancing phagocytic ability of macrophages. Clin Exp Immunol 2021; 205:333-342. [PMID: 33999416 DOI: 10.1111/cei.13618] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Revised: 04/23/2021] [Accepted: 05/03/2021] [Indexed: 01/25/2023] Open
Abstract
Cisplatin is mainly used in late-stage or recurrent laryngeal cancer patients. However, the effect of the chemotherapy is limited due to cisplatin resistance. Therefore, we explored the synergized role of immunosuppressive mediator with cisplatin in laryngeal cancer. Cancer cells isolated from tissues of patients with laryngeal cancer were treated with cisplatin to screen the potential immunosuppressive mediator, whose synergized effects with cisplatin were explored both in vivo and in vitro. CD47 was selected for its high expression in cisplatin-treated laryngeal cancer cells. Blocking CD47 expression using its neutralizing antibody (aCD47) synergized with cisplatin to increase macrophage phagocytosis in a co-culture system of human epithelial type 2 (Hep-2) cancer cells with tumor-associated macrophages (TAMs). Moreover, aCD47 together with cisplatin prevented tumor growth by inhibiting proliferation of cancer cells and the secretion of proinflammatory cytokines, as well as by inducing the apoptosis of cancer cells and phagocytosis of TAMs in a Hep-2-implanted mouse tumor model. aCD47 synergized with cisplatin against laryngeal cancer by enhancing the phagocytic ability of TAMs, and the combined therapy of cisplatin and aCD47 might serve as a novel therapeutic strategy against laryngeal cancer.
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Affiliation(s)
- Jingmiao Wang
- The First Department of Otorhinolaryngology, the Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Haizhong Zhang
- The First Department of Otorhinolaryngology, the Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Xiaoyan Yin
- The First Department of Otorhinolaryngology, the Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Yanrui Bian
- The First Department of Otorhinolaryngology, the Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
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221
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Wang C, Sun C, Li M, Xia B, Wang Y, Zhang L, Zhang Y, Wang J, Sun F, Lu S, Zhu J, Huang J, Zhang Y. Novel fully human anti-CD47 antibodies stimulate phagocytosis and promote elimination of AML cells. J Cell Physiol 2021; 236:4470-4481. [PMID: 33206395 DOI: 10.1002/jcp.30163] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 11/02/2020] [Accepted: 11/04/2020] [Indexed: 01/03/2023]
Abstract
Although most patients with acute myeloid leukemia (AML) enter remission after induction chemotherapy, the risk of relapse remains considerable. Therefore, some novel therapeutic strategies are still required. This study found that the overexpression of CD47 on AML cells was at least twofold more than that on normal bone marrow (NBM) cells in 81% (17/21) of the investigated patients; no patients had lower expression level of CD47 compared with healthy donors. The study also demonstrated that blocking the CD47/SIRPα (signal regulatory protein α) signal with the established novel fully human anti-CD47 monoclonal antibodies increased the phagocytosis of AML cells by macrophages in vitro. Furthermore, in vivo experiments showed that the novel fully human anti-CD47 monoclonal antibodies could significantly prolong the survival time of mice. Overall, the novel fully human anti-CD47 antibodies could block CD47/SIRPα interaction, increase macrophage-mediated phagocytosis, and enhance the elimination of AML cells.
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MESH Headings
- Adolescent
- Adult
- Animals
- Antibodies, Monoclonal, Humanized/pharmacology
- Antibody Specificity
- Antigens, Differentiation/metabolism
- Antineoplastic Agents, Immunological/pharmacology
- Binding Sites, Antibody
- CD47 Antigen/antagonists & inhibitors
- CD47 Antigen/immunology
- CD47 Antigen/metabolism
- Case-Control Studies
- Female
- HL-60 Cells
- Humans
- K562 Cells
- Leukemia, Myeloid, Acute/drug therapy
- Leukemia, Myeloid, Acute/immunology
- Leukemia, Myeloid, Acute/metabolism
- Leukemia, Myeloid, Acute/pathology
- Macrophages/drug effects
- Macrophages/immunology
- Macrophages/metabolism
- Male
- Mice, Inbred C57BL
- Mice, Inbred NOD
- Mice, SCID
- Middle Aged
- Phagocytosis/drug effects
- Receptors, Immunologic/metabolism
- THP-1 Cells
- U937 Cells
- Xenograft Model Antitumor Assays
- Mice
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Affiliation(s)
- Chaoyu Wang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
- Department of Pediatric Oncology, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
- Key Laboratory of Cancer Prevention and Therapy, Tianjin, Department of Hematology, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
- Chongqing Key Laboratory of Translational Research for Cancer Metastasis and Individualized Treatment, Chongqing University Cancer Hospital, Chongqing, China
| | - Chengtao Sun
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
- Department of Pediatric Oncology, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
- Key Laboratory of Cancer Prevention and Therapy, Tianjin, Department of Hematology, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - Mengzhen Li
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
- Department of Pediatric Oncology, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
- Key Laboratory of Cancer Prevention and Therapy, Tianjin, Department of Hematology, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - Bing Xia
- Key Laboratory of Cancer Prevention and Therapy, Tianjin, Department of Hematology, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - Yi Wang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
- Department of Pediatric Oncology, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
- Key Laboratory of Cancer Prevention and Therapy, Tianjin, Department of Hematology, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - Li Zhang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
- Department of Pediatric Oncology, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
| | - Yanyan Zhang
- INSERM Unité Mixte de Recherche (UMR), Villejuif, France
- Université Paris-Saclay, Gustave Roussy, Villejuif, France
- Gustave Roussy, Villejuif, France
| | - Juan Wang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
- Department of Pediatric Oncology, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
| | - Feifei Sun
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
- Department of Pediatric Oncology, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
| | - Suying Lu
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
- Department of Pediatric Oncology, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
| | - Jia Zhu
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
- Department of Pediatric Oncology, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
| | - Junting Huang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
- Department of Pediatric Oncology, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
| | - Yizhuo Zhang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
- Department of Pediatric Oncology, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
- Key Laboratory of Cancer Prevention and Therapy, Tianjin, Department of Hematology, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
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Abstract
Immunotherapy has become the mainstay for lung cancer treatment, providing sustained therapeutic responses and improved prognosis compared with those obtained with surgery, chemotherapy, radiotherapy, and targeted therapy. It has the potential for anti-tumor treatment and killing tumor cells by activating human immunity and has moved the targets of anti-cancer therapy from malignant tumor cells to immune cell subsets. Two kinds of immune checkpoints, cytotoxic T-lymphocyte-associated antigen 4 (CTLA-4) and programmed death-1 (PD-1)/programmed death ligand 1 (PD-L1), are the main targets of current immunotherapy in lung cancer. Despite the successful outcomes achieved by immune checkpoint inhibitors, a small portion of lung cancer patients remain unresponsive to checkpoint immunotherapy or may ultimately become resistant to these agents as a result of the complex immune modulatory network in the tumor microenvironment. Therefore, it is imperative to exploit novel immunotherapy targets to further expand the proportion of patients benefiting from immunotherapy. This review summarizes the molecular features, biological function, and clinical significance of several novel checkpoints that have important roles in lung cancer immune responses beyond the CTLA-4 and PD-1/PD-L1 axes, including the markers of co-inhibitory and co-stimulatory T lymphocyte pathways and inhibitory markers of macrophages and natural killer cells.
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223
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Wei G, Zhang H, Zhao H, Wang J, Wu N, Li L, Wu J, Zhang D. Emerging immune checkpoints in the tumor microenvironment: Implications for cancer immunotherapy. Cancer Lett 2021; 511:68-76. [PMID: 33957184 DOI: 10.1016/j.canlet.2021.04.021] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 04/23/2021] [Accepted: 04/27/2021] [Indexed: 12/14/2022]
Abstract
Immune checkpoints within the tumor microenvironment (TME) play important roles in modulating host antitumor immunity. Checkpoint-based immunotherapies (e.g. immune checkpoint inhibitors) have revolutionized cancer therapy. However, there are still many drawbacks with current checkpoint immunotherapies in clinical practice, such as unresponsiveness, resistance, tumor hyperprogression, autoimmune-related adverse events, and limited efficacy with some solid malignances. These drawbacks highlight the need to further investigate the mechanisms underlying the therapeutic effects, as well as the need to identify new targets for cancer immunotherapy. With the discovery of emerging immune checkpoints in the TME, the development of strategies targeting the pivotal immunomodulators for cancer treatment has been significantly advanced in the past decade. In this review, we summarize and classify the novel emerging immune checkpoints beyond the extensively studied ones (e.g. PD-1, PD-L1, CTLA-4, LAG-3 and TIM-3) in the TME, and provide an update on the clinical trials targeting these key immune molecules.
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Affiliation(s)
- Gaigai Wei
- Children's Hospital of Fudan University, National Children's Medical Center, And Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, China
| | - Huiling Zhang
- Children's Hospital of Fudan University, National Children's Medical Center, And Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, China
| | - Haiping Zhao
- Children's Hospital of Fudan University, National Children's Medical Center, And Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, China
| | - Jing Wang
- Children's Hospital of Fudan University, National Children's Medical Center, And Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, China
| | - Nana Wu
- Children's Hospital of Fudan University, National Children's Medical Center, And Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, China
| | - Leying Li
- Children's Hospital of Fudan University, National Children's Medical Center, And Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, China
| | - Jiaying Wu
- Children's Hospital of Fudan University, National Children's Medical Center, And Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, China
| | - Duanwu Zhang
- Children's Hospital of Fudan University, National Children's Medical Center, And Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, China.
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224
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Kaur S, Bronson SM, Pal-Nath D, Miller TW, Soto-Pantoja DR, Roberts DD. Functions of Thrombospondin-1 in the Tumor Microenvironment. Int J Mol Sci 2021; 22:4570. [PMID: 33925464 PMCID: PMC8123789 DOI: 10.3390/ijms22094570] [Citation(s) in RCA: 60] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 04/15/2021] [Accepted: 04/23/2021] [Indexed: 12/13/2022] Open
Abstract
The identification of thrombospondin-1 as an angiogenesis inhibitor in 1990 prompted interest in its role in cancer biology and potential as a therapeutic target. Decreased thrombospondin-1 mRNA and protein expression are associated with progression in several cancers, while expression by nonmalignant cells in the tumor microenvironment and circulating levels in cancer patients can be elevated. THBS1 is not a tumor suppressor gene, but the regulation of its expression in malignant cells by oncogenes and tumor suppressor genes mediates some of their effects on carcinogenesis, tumor progression, and metastasis. In addition to regulating angiogenesis and perfusion of the tumor vasculature, thrombospondin-1 limits antitumor immunity by CD47-dependent regulation of innate and adaptive immune cells. Conversely, thrombospondin-1 is a component of particles released by immune cells that mediate tumor cell killing. Thrombospondin-1 differentially regulates the sensitivity of malignant and nonmalignant cells to genotoxic stress caused by radiotherapy and chemotherapy. The diverse activities of thrombospondin-1 to regulate autophagy, senescence, stem cell maintenance, extracellular vesicle function, and metabolic responses to ischemic and genotoxic stress are mediated by several cell surface receptors and by regulating the functions of several secreted proteins. This review highlights progress in understanding thrombospondin-1 functions in cancer and the challenges that remain in harnessing its therapeutic potential.
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Affiliation(s)
- Sukhbir Kaur
- Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD 20892, USA; (S.K.); (D.P.-N.)
| | - Steven M. Bronson
- Department of Internal Medicine, Section of Molecular Medicine, Comprehensive Cancer Center, Wake Forest School of Medicine, Winston-Salem, NC 27101, USA;
| | - Dipasmita Pal-Nath
- Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD 20892, USA; (S.K.); (D.P.-N.)
| | - Thomas W. Miller
- Centre de Recherche en Cancérologie de Marseille, Institut Paoli-Calmettes, 13273 Marseille, France
| | - David R. Soto-Pantoja
- Department of Surgery and Department of Cancer Biology, Comprehensive Cancer Center, Wake Forest School of Medicine, Winston-Salem, NC 27101, USA
| | - David D. Roberts
- Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD 20892, USA; (S.K.); (D.P.-N.)
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225
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Correlation of CD47 Expression with Adverse Clinicopathologic Features and an Unfavorable Prognosis in Colorectal Adenocarcinoma. Diagnostics (Basel) 2021; 11:diagnostics11040668. [PMID: 33917794 PMCID: PMC8068136 DOI: 10.3390/diagnostics11040668] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 04/07/2021] [Accepted: 04/07/2021] [Indexed: 12/14/2022] Open
Abstract
CD47, a transmembrane protein, is widely overexpressed on the tumor cell surface. However, the prognostic significance of CD47 expression in colorectal adenocarcinoma (CRA) has not yet been clarified. Here, we investigated the clinicopathologic significance of CD47 expression in CRA. CD47 expression was evaluated via immunohistochemical analysis of microarray sections of 328 CRA tissues. CD47 expression was observed in 53 (16.2%) of the 328 CRA tissues, and positive expression was associated with lymphatic invasion (p = 0.018), perineural invasion (p = 0.024), tumor budding (p = 0.009), the pathologic N stage (p = 0.022), and the American Joint Committee on Cancer (AJCC) stage (p = 0.027). In survival analyses of 329 patients, a positive CD47 expression was associated with a poor recurrence-free survival (RFS) (p = 0.032). In multivariate analysis, however, it was not an independent prognostic factor. In patients who underwent surgical resection without adjuvant treatment, a positive CD47 expression was associated with a shorter RFS (p = 0.001) but not with cancer-specific survival (CSS). In patients who received postoperative adjuvant treatment, no significant differences were found in both RFS and CSS. In conclusion, we investigated CD47 expression in 328 CRA tissues. A positive CD47 expression was observed in a minority (16.2%) of the tissues and was significantly associated with adverse clinicopathologic features and a poor patient outcome.
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226
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Bejarano L, Jordāo MJC, Joyce JA. Therapeutic Targeting of the Tumor Microenvironment. Cancer Discov 2021; 11:933-959. [PMID: 33811125 DOI: 10.1158/2159-8290.cd-20-1808] [Citation(s) in RCA: 638] [Impact Index Per Article: 212.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 02/05/2021] [Accepted: 02/08/2021] [Indexed: 01/10/2023]
Abstract
Strategies to therapeutically target the tumor microenvironment (TME) have emerged as a promising approach for cancer treatment in recent years due to the critical roles of the TME in regulating tumor progression and modulating response to standard-of-care therapies. Here, we summarize the current knowledge regarding the most advanced TME-directed therapies, which have either been clinically approved or are currently being evaluated in trials, including immunotherapies, antiangiogenic drugs, and treatments directed against cancer-associated fibroblasts and the extracellular matrix. We also discuss some of the challenges associated with TME therapies, and future perspectives in this evolving field. SIGNIFICANCE: This review provides a comprehensive analysis of the current therapies targeting the TME, combining a discussion of the underlying basic biology with clinical evaluation of different therapeutic approaches, and highlighting the challenges and future perspectives.
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Affiliation(s)
- Leire Bejarano
- Department of Oncology, University of Lausanne, Lausanne, Switzerland
| | - Marta J C Jordāo
- Department of Oncology, University of Lausanne, Lausanne, Switzerland
| | - Johanna A Joyce
- Department of Oncology, University of Lausanne, Lausanne, Switzerland. .,Ludwig Institute for Cancer Research, University of Lausanne, Lausanne, Switzerland
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Zhao W, Hu X, Li W, Li R, Chen J, Zhou L, Qiang S, Wu W, Shi S, Dong C. M2-Like TAMs Function Reversal Contributes to Breast Cancer Eradication by Combination Dual Immune Checkpoint Blockade and Photothermal Therapy. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2007051. [PMID: 33599061 DOI: 10.1002/smll.202007051] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 01/04/2021] [Indexed: 06/12/2023]
Abstract
Immune checkpoint inhibitor (ICI) therapy is considered to be a revolutionary anti-tumor strategy that may surpass other traditional therapies. Breast cancer is particularly suitable for it theoretically due to upregulation of programmed cell death 1 (PD-1) / programmed cell death ligand 1 (PD-L1) immune checkpoint pathway which exhausts the adaptive immune response mediated by T lymphocytes. However, its blockades exhibit very little effect in breast cancer, owing to the lack of T lymphocytes pre-infiltration and co-existing of intricate immune negative microenvironment including the macrophage-suppressed "Don't eat me" CD47 signal overexpression. Herein, a stimuli-responsive multifunctional nanoplatform (ZIF-PQ-PDA-AUN) is built. Its photothermal therapy can promote the infiltration of T lymphocytes in addition to ablating tumor cells and AUNP-12 and PQ912 further boost both the innate and adaptive immune reactions by cutting off PD-L1 and CD47 signals, respectively. In contrast to earlier single immunotherapy, the nanocomposites exhibit a stronger anti-tumor immune effect without obvious autoimmune side effects, promoting infiltration of T lymphocyte into the tumor site and strengthening phagocytosis of macrophages, even more exciting, significantly reversing pro-tumor M2-like tumor-associated macrophages (TAMs) to anti-tumor M1-like TAMs. The research may provide a promising strategy to develop high-efficient and low-toxic immunotherapy based on nanotechnology.
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Affiliation(s)
- Wenrong Zhao
- Breast Cancer Center, Shanghai East Hospital, Shanghai Key Laboratory of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai, 200120, P. R. China
| | - Xiaochun Hu
- Breast Cancer Center, Shanghai East Hospital, Shanghai Key Laboratory of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai, 200120, P. R. China
| | - Wenhui Li
- Shanghai Institute of Quality Inspection and Technical Research, Shanghai, 201100, P. R. China
| | - Ruihao Li
- Breast Cancer Center, Shanghai East Hospital, Shanghai Key Laboratory of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai, 200120, P. R. China
| | - Jinjin Chen
- Breast Cancer Center, Shanghai East Hospital, Shanghai Key Laboratory of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai, 200120, P. R. China
| | - Lulu Zhou
- Breast Cancer Center, Shanghai East Hospital, Shanghai Key Laboratory of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai, 200120, P. R. China
| | - Sufeng Qiang
- Breast Cancer Center, Shanghai East Hospital, Shanghai Key Laboratory of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai, 200120, P. R. China
| | - Wenjing Wu
- Breast Cancer Center, Shanghai East Hospital, Shanghai Key Laboratory of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai, 200120, P. R. China
| | - Shuo Shi
- Breast Cancer Center, Shanghai East Hospital, Shanghai Key Laboratory of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai, 200120, P. R. China
| | - Chunyan Dong
- Breast Cancer Center, Shanghai East Hospital, Shanghai Key Laboratory of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai, 200120, P. R. China
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228
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Wang J, Ilyas S. Targeting the tumor microenvironment in cholangiocarcinoma: implications for therapy. Expert Opin Investig Drugs 2021; 30:429-438. [PMID: 33322977 PMCID: PMC8096665 DOI: 10.1080/13543784.2021.1865308] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Accepted: 12/14/2020] [Indexed: 02/08/2023]
Abstract
Introduction: Cholangiocarcinomas (CCAs) are biliary epithelial tumors with rising incidence over the past 3 decades. Early diagnosis of CCAs remains a significant challenge and the majority of patients present at an advanced stage. CCAs are heterogeneous tumors and currently available standard systemic therapy options are of limited effectiveness. Immune checkpoint inhibition (ICI) has transformed cancer therapy across a spectrum of malignancies. However, the response rate to ICI has been relatively disappointing in CCAs owing to its desmoplastic tumor microenvironment (TME).Areas covered: Tumor microenvironment of CCAs consists of innate and adaptive cells, stromal cells, and extracellular components (cytokines, chemokines, exosomes, etc.). This intricate microenvironment has multiple immunosuppressive elements that promote tumor cell survival and therapeutic resistance. Accordingly, there is a need for the development of effective therapeutic strategies that target the TME. Herein, we review the components of the CCA TME, and potential therapies targeting the CCA TME.Expert opinion: CCAs are desmoplastic tumors with a dense tumor microenvironment. An enhanced understanding of the various components of the CCA TME is essential in the effort to develop novel biomarkers for patient stratification as well as combination therapeutic strategies that target the tumor plus the TME.
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Affiliation(s)
- Juan Wang
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
| | - Sumera Ilyas
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
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229
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Taguchi S, Suga H. Targeting of extracellular protein-protein interactions with macrocyclic peptides. Curr Opin Chem Biol 2021; 62:82-89. [PMID: 33774472 DOI: 10.1016/j.cbpa.2021.02.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 02/23/2021] [Accepted: 02/23/2021] [Indexed: 12/16/2022]
Abstract
Targeting of extracellular protein-protein interactions (PPI) is emerging as a major application for de novo discovered macrocyclic peptides. Modern discovery platforms can routinely identify macrocyclic peptide ligands capable of highly selective modulation of extracellular signaling pathways; amenability to chemical synthesis and natural modularity of peptides additionally provides an avenue for their further structural elaboration, while the challenge of cell internalization can be minimized. Here, we discuss the recent progress in targeting extracellular PPIs with macrocyclic peptides by focusing on a number of recent case studies. We analyze the scope and potential limitations of the discovery systems in identifying functional macrocyclic ligands. We also highlight the recent technical advancements allowing for a more streamlined discovery pipeline and our brief perspective in this field.
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Affiliation(s)
- Shota Taguchi
- Department of Advanced Interdisciplinary, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Hiroaki Suga
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.
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230
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Imam R, Chang Q, Black M, Yu C, Cao W. CD47 expression and CD163 + macrophages correlated with prognosis of pancreatic neuroendocrine tumor. BMC Cancer 2021; 21:320. [PMID: 33765961 PMCID: PMC7992939 DOI: 10.1186/s12885-021-08045-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Accepted: 03/11/2021] [Indexed: 12/12/2022] Open
Abstract
Background Recent studies have suggested the important roles of CD47 and tumor-associated macrophages in the prognosis and immunotherapy of various human malignancies. However, the clinical significance of CD47 expression and CD163+ TAMs in pancreatic neuroendocrine tumor (PanNET) remains unclear. Methods In this study, 47 well-differentiated PanNET resection specimens were collected. CD47 expression and CD163+ macrophages were evaluated using immunohistochemistry and correlated with clinicopathologic properties. Results Positive CD47 staining was seen in all PanNETs as well as adjacent normal islets. Compared to normal islets, CD47 overexpressed in PanNETs (p = 0.0015). In the cohort, lymph node metastasis (LNM), lymphovascular invasion (LVI), and perineural invasion (PNI) were found in 36.2, 59.6, and 48.9% of the cases, respectively. Interestingly, PanNETs with LNM, LVI, or PNI had significantly lower H-score of CD47 than those without LNM (p = 0.035), LVI (p = 0.0005), or PNI (p = 0.0035). PanNETs in patients with disease progression (recurrence/death) also showed a significantly lower expression of CD47 than those without progression (p = 0.022). In contrast, CD163+ macrophage counts were significantly higher in cases with LNM, LVI, and PNI. Conclusions Our data suggest relative low CD47 expression and high CD163+ TAMs may act as indicators for poor prognosis of PanNETs. Supplementary Information The online version contains supplementary material available at 10.1186/s12885-021-08045-7.
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Affiliation(s)
- Rami Imam
- Department of Pathology, New York University Grossman School of Medicine, 560 1st Ave, Tisch 4-15I, New York, NY, 10016, USA
| | - Qing Chang
- Department of Pathology, New York University Grossman School of Medicine, 560 1st Ave, Tisch 4-15I, New York, NY, 10016, USA
| | - Margaret Black
- Department of Pathology, New York University Grossman School of Medicine, 560 1st Ave, Tisch 4-15I, New York, NY, 10016, USA
| | - Caroline Yu
- Department of Pathology, New York University Grossman School of Medicine, 560 1st Ave, Tisch 4-15I, New York, NY, 10016, USA
| | - Wenqing Cao
- Department of Pathology, New York University Grossman School of Medicine, 560 1st Ave, Tisch 4-15I, New York, NY, 10016, USA.
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231
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Xi Q, Zhang J, Yang G, Zhang L, Chen Y, Wang C, Zhang Z, Guo X, Zhao J, Xue Z, Li Y, Zhang Q, Da Y, Liu L, Yao Z, Zhang R. Restoration of miR-340 controls pancreatic cancer cell CD47 expression to promote macrophage phagocytosis and enhance antitumor immunity. J Immunother Cancer 2021; 8:jitc-2019-000253. [PMID: 32503944 PMCID: PMC7279671 DOI: 10.1136/jitc-2019-000253] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/09/2020] [Indexed: 01/15/2023] Open
Abstract
Background Immune checkpoint blockade has emerged as a potential cancer immunotherapy. The “don’t eat me” signal CD47 in cancer cells binds signal regulatory protein-α on macrophages and prevents their phagocytosis. The role of miR-340 in pancreatic ductal adenocarcinoma (PDAC), especially in tumor immunity, has not been explored. Here, we examined the clinical and biological relevance of miR-340 and the molecular pathways regulated by miR-340 in PDAC. Methods CD47 and miR-340 expression and the relationship with cancer patient survival were analyzed by bioinformatics. The mechanism of miR-340 action was explored through bioinformatics, luciferase reporter, qRT-PCR and western blot analyses. The effects of miR-340 on cancer cells were analyzed in terms of apoptosis, proliferation, migration and phagocytosis by macrophages. In vivo tumorigenesis was studied in orthotopic and subcutaneous models, and immune cells from the peripheral and tumor immune microenvironments were analyzed by flow cytometry. Depletion of macrophages was used to verify the role of macrophages in impacting the function of miR-340 in tumor progression. Results miR-340 directly regulates and inversely correlates with CD47, and it predicts patient survival in PDAC. The restoration of miR-340 expression in pancreatic cancer cells was sufficient to downregulate CD47 and promote phagocytosis of macrophages, further inhibiting tumor growth. The overexpression of miR-340 promoted macrophages to become M1-like phenotype polarized in peripheral and tumor immune microenvironments and increased T cells, especially CD8+ T cells, contributing to the antitumor effect of miR-340. Conclusions miR-340 is a key regulator of phagocytosis and antitumor immunity, and it could offer a new opportunity for immunotherapy for PDAC.
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Affiliation(s)
- Qing Xi
- Department of Immunology and Research Center of Basic Medical Sciences, Key Laboratory of Immune Microenvironment and Diseases of Educational Ministry of China, Tianjin Key Laboratory of Cellular and Molecular Immunology, Tianjin Medical University, Tianjin, China
| | - Jieyou Zhang
- Department of Immunology and Research Center of Basic Medical Sciences, Key Laboratory of Immune Microenvironment and Diseases of Educational Ministry of China, Tianjin Key Laboratory of Cellular and Molecular Immunology, Tianjin Medical University, Tianjin, China
| | - Guangze Yang
- Department of Immunology and Research Center of Basic Medical Sciences, Key Laboratory of Immune Microenvironment and Diseases of Educational Ministry of China, Tianjin Key Laboratory of Cellular and Molecular Immunology, Tianjin Medical University, Tianjin, China
| | - Lijuan Zhang
- Department of Immunology and Research Center of Basic Medical Sciences, Key Laboratory of Immune Microenvironment and Diseases of Educational Ministry of China, Tianjin Key Laboratory of Cellular and Molecular Immunology, Tianjin Medical University, Tianjin, China
| | - Ying Chen
- Guangdong Province Key Laboratory for Biotechnology Drug Candidates, School of Life Sciences and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou, China
| | - Chengzhi Wang
- Department of Immunology and Research Center of Basic Medical Sciences, Key Laboratory of Immune Microenvironment and Diseases of Educational Ministry of China, Tianjin Key Laboratory of Cellular and Molecular Immunology, Tianjin Medical University, Tianjin, China
| | - Zimu Zhang
- Department of Immunology and Research Center of Basic Medical Sciences, Key Laboratory of Immune Microenvironment and Diseases of Educational Ministry of China, Tianjin Key Laboratory of Cellular and Molecular Immunology, Tianjin Medical University, Tianjin, China
| | - Xiangdong Guo
- Department of Immunology and Research Center of Basic Medical Sciences, Key Laboratory of Immune Microenvironment and Diseases of Educational Ministry of China, Tianjin Key Laboratory of Cellular and Molecular Immunology, Tianjin Medical University, Tianjin, China
| | - Jingyi Zhao
- Guangdong Province Key Laboratory for Biotechnology Drug Candidates, School of Life Sciences and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou, China
| | - Zhenyi Xue
- Department of Immunology and Research Center of Basic Medical Sciences, Key Laboratory of Immune Microenvironment and Diseases of Educational Ministry of China, Tianjin Key Laboratory of Cellular and Molecular Immunology, Tianjin Medical University, Tianjin, China
| | - Yan Li
- Department of Immunology and Research Center of Basic Medical Sciences, Key Laboratory of Immune Microenvironment and Diseases of Educational Ministry of China, Tianjin Key Laboratory of Cellular and Molecular Immunology, Tianjin Medical University, Tianjin, China
| | - Qi Zhang
- Tianjin Key Laboratory of A cute Abdomen Disease Associated Organ Injury and ITCWM Repair, Institute of Integrative Medicines for Acute Abdominal Diseases, Nankai Hospital, Tianjin, China
| | - Yurong Da
- Department of Immunology and Research Center of Basic Medical Sciences, Key Laboratory of Immune Microenvironment and Diseases of Educational Ministry of China, Tianjin Key Laboratory of Cellular and Molecular Immunology, Tianjin Medical University, Tianjin, China
| | - Li Liu
- Department of Radiology, The University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Zhi Yao
- Department of Immunology and Research Center of Basic Medical Sciences, Key Laboratory of Immune Microenvironment and Diseases of Educational Ministry of China, Tianjin Key Laboratory of Cellular and Molecular Immunology, Tianjin Medical University, Tianjin, China
| | - Rongxin Zhang
- Guangdong Province Key Laboratory for Biotechnology Drug Candidates, School of Life Sciences and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou, China; Department of Immunology and Research Center of Basic Medical Sciences, Key Laboratory of Immune Microenvironment and Diseases of Educational Ministry of China, Tianjin Key Laboratory of Cellular and Molecular Immunology, Tianjin Medical University, Tianjin, China
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232
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Saheb Sharif-Askari N, Saheb Sharif-Askari F, Mdkhana B, Al Heialy S, Alsafar HS, Hamoudi R, Hamid Q, Halwani R. Enhanced expression of immune checkpoint receptors during SARS-CoV-2 viral infection. Mol Ther Methods Clin Dev 2021; 20:109-121. [PMID: 33200082 PMCID: PMC7658590 DOI: 10.1016/j.omtm.2020.11.002] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 11/04/2020] [Indexed: 12/17/2022]
Abstract
The immune system is tightly regulated by the activity of stimulatory and inhibitory immune receptors. This immune homeostasis is usually disturbed during chronic viral infection. Using publicly available transcriptomic datasets, we conducted in silico analyses to evaluate the expression pattern of 38 selected immune inhibitory receptors (IRs) associated with different myeloid and lymphoid immune cells during coronavirus disease 2019 (COVID-19) infection. Our analyses revealed a pattern of overall upregulation of IR mRNA during severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. A large number of IRs expressed on both lymphoid and myeloid cells were upregulated in nasopharyngeal swabs (NPSs), while lymphoid-associated IRs were specifically upregulated in autopsies, reflecting severe, terminal stage COVID-19 disease. Eight genes (BTLA, LAG3, FCGR2B, PDCD1, CEACAM1, CTLA4, CD72, and SIGLEC7), shared by NPSs and autopsies, were more expressed in autopsies and were directly correlated with viral levels. Single-cell data from blood and bronchoalveolar samples also reflected the observed association between IR upregulation and disease severity. Moreover, compared to SARS-CoV-1, influenza, and respiratory syncytial virus infections, the number and intensities of upregulated IRs were higher in SARS-CoV-2 infections. In conclusion, the immunopathology and severity of COVID-19 could be attributed to dysregulation of different immune inhibitors. Targeting one or more of these immune inhibitors could represent an effective therapeutic approach for the treatment of COVID-19 early and late immune dysregulations.
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Affiliation(s)
- Narjes Saheb Sharif-Askari
- Sharjah Institute of Medical Research, College of Medicine, University of Sharjah, Sharjah, United Arab Emirates
| | - Fatemeh Saheb Sharif-Askari
- Sharjah Institute of Medical Research, College of Medicine, University of Sharjah, Sharjah, United Arab Emirates
| | - Bushra Mdkhana
- Sharjah Institute of Medical Research, College of Medicine, University of Sharjah, Sharjah, United Arab Emirates
| | - Saba Al Heialy
- College of Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, United Arab Emirates
- Meakins-Christie Laboratories, Research Institute of the McGill University Healthy Center, McGill University, Montreal, QC, Canada
| | - Habiba S. Alsafar
- Center for Biotechnology, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
- Department of Biomedical Engineering, College of Engineering, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
- Department of Genetics and Molecular Biology, College of Medicine and Health Sciences, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
| | - Rifat Hamoudi
- Sharjah Institute of Medical Research, College of Medicine, University of Sharjah, Sharjah, United Arab Emirates
- Department of Clinical Sciences, College of Medicine, University of Sharjah, Sharjah, United Arab Emirates
| | - Qutayba Hamid
- Sharjah Institute of Medical Research, College of Medicine, University of Sharjah, Sharjah, United Arab Emirates
- Meakins-Christie Laboratories, Research Institute of the McGill University Healthy Center, McGill University, Montreal, QC, Canada
- Department of Clinical Sciences, College of Medicine, University of Sharjah, Sharjah, United Arab Emirates
| | - Rabih Halwani
- Sharjah Institute of Medical Research, College of Medicine, University of Sharjah, Sharjah, United Arab Emirates
- Department of Clinical Sciences, College of Medicine, University of Sharjah, Sharjah, United Arab Emirates
- Prince Abdullah Ben Khaled Celiac Disease Research Chair, Department of Pediatrics, Faculty of Medicine, King Saud University, Saudi Arabia
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233
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Yang J, Yao Y, Tong L, Zhu Z, Wang L, Yang J. CD47 is highly expressed in gliomas and targeting CD47 is a promising therapeutic strategy. EUR J INFLAMM 2021. [DOI: 10.1177/20587392211000899] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Gliomas are very malignant brain tumors that are difficult to treat. CD47 is an antiphagocytic molecule that binds to SIPRα on phagocytes. It is overexpressed on the plasma membranes of multiple human tumor cell types and is an important diagnostic and prognostic biomarker in many types of cancer. However, the association between CD47 protein expression in glioma tissue and clinicopathological stage has not been investigated in detail. A total of 80 surgical glioma specimens were stained with anti-CD47 antibody to assess the relationship between CD47 protein expression and clinicopathological stage of the glioma. Wound healing assays were performed to analyze the influence of CD47 on the migration and invasion of glioma cells, and near-infrared fluorescence localization assays in a U-87 MG-bearing xenograft model were used to determine the distribution of anti-CD47 antibody in vivo. MTT assays and administration of anti-CD47 to a U251-bearing xenograft model were used to analyze the inhibitory effects of the antibody on gliomas. CD47 expression was higher in high-grade gliomas than in low-grade gliomas, and high CD47 expression was positively correlated with histology and tumor clinicopathological stage. CD47 over-expression promoted the growth and motility of two glioma cell lines (U-87 MG and U251) and a laboratory-developed anti-CD47 antibody accumulated at the glioma site. Proliferation of U251 and U-87 MG cells was not significantly inhibited by the anti-CD47 antibody in vitro, but the antibody significantly inhibited U251 growth in vivo. It also enhanced inhibition capacity by Taxol. Our results suggest that CD47 plays a critical role in the progression of gliomas from stage I to IV and may be a potential target for the treatment of gliomas. CD47 appears to play a critical role in the progression of gliomas from stage I to IV and an anti-CD47 antibody prepared in the laboratory may inhibit the growth of gliomas.
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Affiliation(s)
- Jiaying Yang
- Department of Neurosurgery, Lanling People’s Hospital, Shandong, P.R. China
| | - Yongjun Yao
- Department of Neurosurgery, Lanling People’s Hospital, Shandong, P.R. China
- Department of Pathology, Lanling People’s Hospital, Shandong, P.R. China
| | - Li Tong
- Department of Biochemistry and Molecular Biology, Beijing Normal University, Gene Engineering and Biotechnology Beijing Key Laboratory, Beijing, P.R. China
| | - Ziwei Zhu
- Department of Biochemistry and Molecular Biology, Beijing Normal University, Gene Engineering and Biotechnology Beijing Key Laboratory, Beijing, P.R. China
| | - Lei Wang
- Department of Neurosurgery, Lanling People’s Hospital, Shandong, P.R. China
| | - Jinju Yang
- Department of Biochemistry and Molecular Biology, Beijing Normal University, Gene Engineering and Biotechnology Beijing Key Laboratory, Beijing, P.R. China
- National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China
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234
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Li Z, Li Y, Gao J, Fu Y, Hua P, Jing Y, Cai M, Wang H, Tong T. The role of CD47-SIRPα immune checkpoint in tumor immune evasion and innate immunotherapy. Life Sci 2021; 273:119150. [PMID: 33662426 DOI: 10.1016/j.lfs.2021.119150] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 01/20/2021] [Accepted: 01/26/2021] [Indexed: 02/07/2023]
Abstract
As a transmembrane protein, CD47 plays an important role in mediating cell proliferation, migration, phagocytosis, apoptosis, immune homeostasis, inhibition of NO signal transduction and other related reactions. Upon the interaction of innate immune checkpoint CD47-SIRPα occurrence, they send a "don't eat me" signal to the macrophages. This signal ultimately helps tumors achieve immune escape by inhibiting macrophage contraction to prevent tumor cells from phagocytosis. Therefore, the importance of CD47-SIRPα immune checkpoint inhibitors in tumor immunotherapy has attracted more attention in recent years. Based on the cognitive improvement of the effect with CD47 in tumor microenvironment and tumor characteristics, the pace of tumor treatment strategies for CD47-SIRPα immune checkpoint inhibitors has gradually accelerated. In this review, we introduced the high expression of CD47 in cancer cells to avoid phagocytosis by immune cells and the importance of CD47 in the structure of cancer microenvironment and the maintenance of cancer cell characteristics. Given the role of the innate immune system in tumorigenesis and development, an improved understanding of the anti-tumor process of innate immune checkpoint inhibitors can lay the foundation for more effective combinations with other anti-tumor treatment strategies.
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Affiliation(s)
- Zihao Li
- The Second Hospital of Jilin University, Changchun, Jilin 130041, China
| | - Yue Li
- The Second Hospital of Jilin University, Changchun, Jilin 130041, China
| | - Jing Gao
- State Key Laboratory of Electroanalytical Chemistry, Research Center of Biomembranomics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China
| | - Yilin Fu
- The Second Hospital of Jilin University, Changchun, Jilin 130041, China
| | - Peiyan Hua
- The Second Hospital of Jilin University, Changchun, Jilin 130041, China
| | - Yingying Jing
- State Key Laboratory of Electroanalytical Chemistry, Research Center of Biomembranomics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China; University of Science and Technology of China, Hefei, Anhui 230027, China
| | - Mingjun Cai
- State Key Laboratory of Electroanalytical Chemistry, Research Center of Biomembranomics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China
| | - Hongda Wang
- State Key Laboratory of Electroanalytical Chemistry, Research Center of Biomembranomics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China; University of Science and Technology of China, Hefei, Anhui 230027, China; Laboratory for Marine Biology and Biotechnology, Qing dao National Laboratory for Marine Science and Technology, Wenhai Road, Aoshanwei, Jimo, Qingdao, Shandong 266237, China
| | - Ti Tong
- The Second Hospital of Jilin University, Changchun, Jilin 130041, China.
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235
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Gauttier V, Pengam S, Durand J, Biteau K, Mary C, Morello A, Néel M, Porto G, Teppaz G, Thepenier V, Danger R, Vince N, Wilhelm E, Girault I, Abes R, Ruiz C, Trilleaud C, Ralph K, Trombetta ES, Garcia A, Vignard V, Martinet B, Glémain A, Bruneau S, Haspot F, Dehmani S, Duplouye P, Miyasaka M, Labarrière N, Laplaud D, Le Bas-Bernardet S, Blanquart C, Catros V, Gouraud PA, Archambeaud I, Aublé H, Metairie S, Mosnier JF, Costantini D, Blancho G, Conchon S, Vanhove B, Poirier N. Selective SIRPα blockade reverses tumor T cell exclusion and overcomes cancer immunotherapy resistance. J Clin Invest 2021; 130:6109-6123. [PMID: 33074246 DOI: 10.1172/jci135528] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Accepted: 08/06/2020] [Indexed: 12/12/2022] Open
Abstract
T cell exclusion causes resistance to cancer immunotherapies via immune checkpoint blockade (ICB). Myeloid cells contribute to resistance by expressing signal regulatory protein-α (SIRPα), an inhibitory membrane receptor that interacts with ubiquitous receptor CD47 to control macrophage phagocytosis in the tumor microenvironment. Although CD47/SIRPα-targeting drugs have been assessed in preclinical models, the therapeutic benefit of selectively blocking SIRPα, and not SIRPγ/CD47, in humans remains unknown. We report a potent synergy between selective SIRPα blockade and ICB in increasing memory T cell responses and reverting exclusion in syngeneic and orthotopic tumor models. Selective SIRPα blockade stimulated tumor nest T cell recruitment by restoring murine and human macrophage chemokine secretion and increased anti-tumor T cell responses by promoting tumor-antigen crosspresentation by dendritic cells. However, nonselective SIRPα/SIRPγ blockade targeting CD47 impaired human T cell activation, proliferation, and endothelial transmigration. Selective SIRPα inhibition opens an attractive avenue to overcoming ICB resistance in patients with elevated myeloid cell infiltration in solid tumors.
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Affiliation(s)
| | | | | | | | | | | | - Mélanie Néel
- Université de Nantes, INSERM, Centre de Recherche en Transplantation et Immunologie, UMR 1064.,Institut de Transplantation Urologie Néphrologie (ITUN), F-44000 Nantes, France.,CHU Nantes, Nantes, France
| | - Georgia Porto
- Université de Nantes, INSERM, Centre de Recherche en Transplantation et Immunologie, UMR 1064.,Institut de Transplantation Urologie Néphrologie (ITUN), F-44000 Nantes, France
| | | | | | - Richard Danger
- Université de Nantes, INSERM, Centre de Recherche en Transplantation et Immunologie, UMR 1064.,Institut de Transplantation Urologie Néphrologie (ITUN), F-44000 Nantes, France.,CHU Nantes, Nantes, France
| | - Nicolas Vince
- Université de Nantes, INSERM, Centre de Recherche en Transplantation et Immunologie, UMR 1064.,Institut de Transplantation Urologie Néphrologie (ITUN), F-44000 Nantes, France
| | | | | | - Riad Abes
- OSE Immunotherapeutics, Nantes, France
| | | | - Charlène Trilleaud
- OSE Immunotherapeutics, Nantes, France.,Université de Nantes, INSERM, Centre de Recherche en Transplantation et Immunologie, UMR 1064.,Institut de Transplantation Urologie Néphrologie (ITUN), F-44000 Nantes, France
| | - Kerry Ralph
- Cancer Immunology & Immune Modulation, Boehringer Ingelheim, Ridgefield, Connecticut, USA
| | - E Sergio Trombetta
- Cancer Immunology & Immune Modulation, Boehringer Ingelheim, Ridgefield, Connecticut, USA
| | - Alexandra Garcia
- Université de Nantes, INSERM, Centre de Recherche en Transplantation et Immunologie, UMR 1064.,Institut de Transplantation Urologie Néphrologie (ITUN), F-44000 Nantes, France.,CHU Nantes, Nantes, France
| | - Virginie Vignard
- CHU Nantes, Nantes, France.,Université de Nantes, CNRS, INSERM, Center for Research in Cancerology and Immunology Nantes-Angers (CRCINA), F-44000 Nantes, France
| | - Bernard Martinet
- Université de Nantes, INSERM, Centre de Recherche en Transplantation et Immunologie, UMR 1064.,Institut de Transplantation Urologie Néphrologie (ITUN), F-44000 Nantes, France
| | - Alexandre Glémain
- Université de Nantes, INSERM, Centre de Recherche en Transplantation et Immunologie, UMR 1064.,Institut de Transplantation Urologie Néphrologie (ITUN), F-44000 Nantes, France
| | - Sarah Bruneau
- Université de Nantes, INSERM, Centre de Recherche en Transplantation et Immunologie, UMR 1064.,Institut de Transplantation Urologie Néphrologie (ITUN), F-44000 Nantes, France
| | - Fabienne Haspot
- Université de Nantes, INSERM, Centre de Recherche en Transplantation et Immunologie, UMR 1064.,Institut de Transplantation Urologie Néphrologie (ITUN), F-44000 Nantes, France
| | - Safa Dehmani
- OSE Immunotherapeutics, Nantes, France.,Université de Nantes, INSERM, Centre de Recherche en Transplantation et Immunologie, UMR 1064.,Institut de Transplantation Urologie Néphrologie (ITUN), F-44000 Nantes, France
| | - Pierre Duplouye
- Université de Nantes, INSERM, Centre de Recherche en Transplantation et Immunologie, UMR 1064.,Institut de Transplantation Urologie Néphrologie (ITUN), F-44000 Nantes, France
| | - Masayuki Miyasaka
- Immunology Frontier Research Center, Osaka University, Yamada-oka, Suita, Japan
| | - Nathalie Labarrière
- Université de Nantes, CNRS, INSERM, Center for Research in Cancerology and Immunology Nantes-Angers (CRCINA), F-44000 Nantes, France
| | - David Laplaud
- Université de Nantes, INSERM, Centre de Recherche en Transplantation et Immunologie, UMR 1064.,Institut de Transplantation Urologie Néphrologie (ITUN), F-44000 Nantes, France.,CHU Nantes, Nantes, France
| | - Stéphanie Le Bas-Bernardet
- Université de Nantes, INSERM, Centre de Recherche en Transplantation et Immunologie, UMR 1064.,Institut de Transplantation Urologie Néphrologie (ITUN), F-44000 Nantes, France
| | - Christophe Blanquart
- Université de Nantes, CNRS, INSERM, Center for Research in Cancerology and Immunology Nantes-Angers (CRCINA), F-44000 Nantes, France
| | - Véronique Catros
- Université de Rennes, INSERM, CHU Rennes, Institut NUMECAN (Nutrition Metabolisms and Cancer), UMR_S 1241, CRB Santé Rennes, Rennes, France
| | - Pierre-Antoine Gouraud
- Université de Nantes, INSERM, Centre de Recherche en Transplantation et Immunologie, UMR 1064.,Institut de Transplantation Urologie Néphrologie (ITUN), F-44000 Nantes, France
| | - Isabelle Archambeaud
- CHU Nantes, Nantes, France.,Institut des Maladies de l'Appareil Digestif (IMAD), Service d'Hépato-Gastro-Entérologie et Chirurgie Digestive
| | - Hélène Aublé
- CHU Nantes, Nantes, France.,Institut des Maladies de l'Appareil Digestif (IMAD), Service d'Hépato-Gastro-Entérologie et Chirurgie Digestive.,Centre d'investigation Clinique and
| | - Sylvie Metairie
- CHU Nantes, Nantes, France.,Institut des Maladies de l'Appareil Digestif (IMAD), Service d'Hépato-Gastro-Entérologie et Chirurgie Digestive
| | - Jean-François Mosnier
- Université de Nantes, INSERM, Centre de Recherche en Transplantation et Immunologie, UMR 1064.,Institut de Transplantation Urologie Néphrologie (ITUN), F-44000 Nantes, France.,Service d'Anatomie et Cytologie Pathologiques, CHU Nantes, Nantes, France
| | | | - Gilles Blancho
- Université de Nantes, INSERM, Centre de Recherche en Transplantation et Immunologie, UMR 1064.,Institut de Transplantation Urologie Néphrologie (ITUN), F-44000 Nantes, France.,CHU Nantes, Nantes, France
| | - Sophie Conchon
- Université de Nantes, INSERM, Centre de Recherche en Transplantation et Immunologie, UMR 1064.,Institut de Transplantation Urologie Néphrologie (ITUN), F-44000 Nantes, France
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Hatterer E, Chauchet X, Richard F, Barba L, Moine V, Chatel L, Broyer L, Pontini G, Bautzova T, Juan F, Calloud S, Bosson N, Charreton M, Masternak K, Buatois V, Shang L. Targeting a membrane-proximal epitope on mesothelin increases the tumoricidal activity of a bispecific antibody blocking CD47 on mesothelin-positive tumors. MAbs 2021; 12:1739408. [PMID: 32191151 PMCID: PMC7153835 DOI: 10.1080/19420862.2020.1739408] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Mesothelin (MSLN) is a cell surface glycoprotein overexpressed in several solid malignancies, including gastric, lung, mesothelioma, pancreatic and ovarian cancers. While several MSLN-targeting therapeutic approaches are in development, only limited efficacy has been achieved in patients. A potential shortcoming of several described antibody-based approaches is that they target the membrane distal region of MSLN and, additionally, are known to be handicapped by the high levels of circulating soluble MSLN in patients. We show here, using monoclonal antibodies (mAbs) targeting different MSLN-spanning epitopes, that the membrane-proximal region resulted in more efficient killing of MSLN-positive tumor cells in antibody-dependent cell-mediated cytotoxicity (ADCC) assays. Surprisingly, no augmented killing was observed in antibody-dependent cellular phagocytosis (ADCP) by mAbs targeting this membrane-proximal region. To further increase the ADCP potential, we, therefore, generated bispecific antibodies (bsAbs) coupling a high-affinity MSLN binding arm to a blocking CD47 arm. Here, targeting the membrane-proximal domain of MSLN demonstrated enhanced ADCP activity compared to membrane-distal domains when the bsAbs were used in in vitro phagocytosis killing assays. Importantly, the superior anti-tumor activity was also translated in xenograft tumor models. Furthermore, we show that the bsAb approach targeting the membrane-proximal epitope of MSLN optimized ADCC activity by augmenting FcγR-IIIA activation and enhanced ADCP via a more efficient blockade of the CD47/SIRPα axis.
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Affiliation(s)
- Eric Hatterer
- Light Chain Bioscience, Novimmune S.A., Plan-les-Ouates, Switzerland
| | - Xavier Chauchet
- Light Chain Bioscience, Novimmune S.A., Plan-les-Ouates, Switzerland
| | - Françoise Richard
- Light Chain Bioscience, Novimmune S.A., Plan-les-Ouates, Switzerland
| | - Leticia Barba
- Light Chain Bioscience, Novimmune S.A., Plan-les-Ouates, Switzerland
| | - Valéry Moine
- Light Chain Bioscience, Novimmune S.A., Plan-les-Ouates, Switzerland
| | - Laurence Chatel
- Light Chain Bioscience, Novimmune S.A., Plan-les-Ouates, Switzerland
| | - Lucile Broyer
- Light Chain Bioscience, Novimmune S.A., Plan-les-Ouates, Switzerland
| | | | - Tereza Bautzova
- Light Chain Bioscience, Novimmune S.A., Plan-les-Ouates, Switzerland
| | - Flora Juan
- Light Chain Bioscience, Novimmune S.A., Plan-les-Ouates, Switzerland
| | - Sebastien Calloud
- Light Chain Bioscience, Novimmune S.A., Plan-les-Ouates, Switzerland
| | - Nicolas Bosson
- Light Chain Bioscience, Novimmune S.A., Plan-les-Ouates, Switzerland
| | - Maud Charreton
- Light Chain Bioscience, Novimmune S.A., Plan-les-Ouates, Switzerland
| | | | - Vanessa Buatois
- Light Chain Bioscience, Novimmune S.A., Plan-les-Ouates, Switzerland
| | - Limin Shang
- Light Chain Bioscience, Novimmune S.A., Plan-les-Ouates, Switzerland
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237
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Maspero D, Dassano A, Pintarelli G, Noci S, De Cecco L, Incarbone M, Tosi D, Santambrogio L, Dragani TA, Colombo F. Read-through transcripts in lung: germline genetic regulation and correlation with the expression of other genes. Carcinogenesis 2021; 41:918-926. [PMID: 32157280 DOI: 10.1093/carcin/bgaa020] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 01/24/2020] [Accepted: 03/06/2020] [Indexed: 11/14/2022] Open
Abstract
Transcripts originating from the transcriptional read through of two adjacent, similarly oriented genes have been identified in normal and neoplastic tissues, but their functional role and the mechanisms that regulate their expression are mostly unknown. Here, we investigated whether the expression of read-through transcripts previously identified in the non-involved lung tissue of lung adenocarcinoma patients was genetically regulated. Data on genome-wide single nucleotide variant genotypes and expression levels of 10 read-through transcripts in 201 samples of lung tissue were combined to identify expression quantitative trait loci (eQTLs). Then, to identify genes whose expression levels correlated with the 10 read-through transcripts, we used whole transcriptome profiles available for 154 patients. For 8 read-though transcripts, we identified 60 eQTLs (false discovery rate <0.05), including 17 cis-eQTLs and 43 trans-eQTLs. These eQTLs did not maintain their behavior on the 'parental' genes involved in the read-through transcriptional event. The expression levels of 7 read-through transcripts were found to correlate with the expression of other genes: CHIA-PIFO and CTSC-RAB38 correlated with CHIA and RAB38, respectively, while 5 other read-through transcripts correlated with 43 unique non-parental transcripts; thus offering indications about the molecular processes in which these chimeric transcripts may be involved. We confirmed 9 eQTLs (for 4 transcripts) in the non-involved lung tissue from an independent series of 188 lung adenocarcinoma patients. Therefore, this study indicates that the expression of four read-through transcripts in normal lung tissue is under germline genetic regulation, and that this regulation is independent of that of the genes involved in the read-through event.
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Affiliation(s)
- Davide Maspero
- Genetic Epidemiology and Pharmacogenomics Unit, Department of Research, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy.,Department of Informatics, Systems and Communication, University of Milan-Bicocca, Milan, Italy
| | - Alice Dassano
- Genetic Epidemiology and Pharmacogenomics Unit, Department of Research, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - Giulia Pintarelli
- Genetic Epidemiology and Pharmacogenomics Unit, Department of Research, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - Sara Noci
- Genetic Epidemiology and Pharmacogenomics Unit, Department of Research, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - Loris De Cecco
- Platform of Integrated Biology, Department of Applied Research and Technology Development, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - Matteo Incarbone
- Department of Surgery, IRCCS Multimedica, Sesto S. Giovanni, Milan, Italy
| | - Davide Tosi
- Department of Surgery, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Università degli Studi di Milano, Milan, Italy
| | - Luigi Santambrogio
- Department of Surgery, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Università degli Studi di Milano, Milan, Italy
| | - Tommaso A Dragani
- Genetic Epidemiology and Pharmacogenomics Unit, Department of Research, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - Francesca Colombo
- Genetic Epidemiology and Pharmacogenomics Unit, Department of Research, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
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238
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Oxidation of Innate Immune Checkpoint CD47 on Cancer Cells with Non-Thermal Plasma. Cancers (Basel) 2021; 13:cancers13030579. [PMID: 33540720 PMCID: PMC7867277 DOI: 10.3390/cancers13030579] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 01/26/2021] [Accepted: 01/27/2021] [Indexed: 12/13/2022] Open
Abstract
Non-thermal plasma (NTP) therapy has been emerging as a promising cancer treatment strategy, and recently, its ability to locally induce immunogenic cancer cell death is being unraveled. We hypothesized that the chemical species produced by NTP reduce immunosuppressive surface proteins and checkpoints that are overexpressed on cancerous cells. Here, 3D in vitro tumor models, an in vivo mouse model, and molecular dynamics simulations are used to investigate the effect of NTP on CD47, a key innate immune checkpoint. CD47 is immediately modulated after NTP treatment and simulations reveal the potential oxidized salt-bridges responsible for conformational changes. Umbrella sampling simulations of CD47 with its receptor, signal-regulatory protein alpha (SIRPα), demonstrate that the induced-conformational changes reduce its binding affinity. Taken together, this work provides new insight into fundamental, chemical NTP-cancer cell interaction mechanisms and a previously overlooked advantage of present NTP cancer therapy: reducing immunosuppressive signals on the surface of cancer cells.
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239
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Pietrobon V, Cesano A, Marincola F, Kather JN. Next Generation Imaging Techniques to Define Immune Topographies in Solid Tumors. Front Immunol 2021; 11:604967. [PMID: 33584676 PMCID: PMC7873485 DOI: 10.3389/fimmu.2020.604967] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Accepted: 12/03/2020] [Indexed: 12/12/2022] Open
Abstract
In recent years, cancer immunotherapy experienced remarkable developments and it is nowadays considered a promising therapeutic frontier against many types of cancer, especially hematological malignancies. However, in most types of solid tumors, immunotherapy efficacy is modest, partly because of the limited accessibility of lymphocytes to the tumor core. This immune exclusion is mediated by a variety of physical, functional and dynamic barriers, which play a role in shaping the immune infiltrate in the tumor microenvironment. At present there is no unified and integrated understanding about the role played by different postulated models of immune exclusion in human solid tumors. Systematically mapping immune landscapes or "topographies" in cancers of different histology is of pivotal importance to characterize spatial and temporal distribution of lymphocytes in the tumor microenvironment, providing insights into mechanisms of immune exclusion. Spatially mapping immune cells also provides quantitative information, which could be informative in clinical settings, for example for the discovery of new biomarkers that could guide the design of patient-specific immunotherapies. In this review, we aim to summarize current standard and next generation approaches to define Cancer Immune Topographies based on published studies and propose future perspectives.
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Affiliation(s)
| | | | | | - Jakob Nikolas Kather
- Medical Oncology, National Center for Tumor Diseases (NCT), University Hospital Heidelberg, Heidelberg, Germany
- Department of Medicine III, University Hospital RWTH Aachen, Aachen, Germany
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240
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Zhou X, Liu X, Huang L. Macrophage-Mediated Tumor Cell Phagocytosis: Opportunity for Nanomedicine Intervention. ADVANCED FUNCTIONAL MATERIALS 2021; 31:2006220. [PMID: 33692665 PMCID: PMC7939128 DOI: 10.1002/adfm.202006220] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Indexed: 05/05/2023]
Abstract
Macrophages are one of the most abundant non-malignant cells in the tumor microenvironment, playing critical roles in mediating tumor immunity. As important innate immune cells, macrophages possess the potential to engulf tumor cells and present tumor-specific antigens for adaptive antitumor immunity induction, leading to growing interest in targeting macrophage phagocytosis for cancer immunotherapy. Nevertheless, live tumor cells have evolved to evade phagocytosis by macrophages via the extensive expression of anti-phagocytic molecules, such as CD47. In addition, macrophages also rapidly recognize and engulf apoptotic cells (efferocytosis) in the tumor microenvironment, which inhibits inflammatory responses and facilitates immune escape of tumor cells. Thus, intervention of macrophage phagocytosis by blocking anti-phagocytic signals on live tumor cells or inhibiting tumor efferocytosis presents a promising strategy for the development of cancer immunotherapies. Here, the regulation of macrophage-mediated tumor cell phagocytosis is first summarized, followed by an overview of strategies targeting macrophage phagocytosis for the development of antitumor therapies. Given the potential off-target effects associated with the administration of traditional therapeutics (for example, monoclonal antibodies, small molecule inhibitors), we highlight the opportunity for nanomedicine in macrophage phagocytosis intervention.
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Affiliation(s)
- Xuefei Zhou
- Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education and Center for Bionanoengineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Xiangrui Liu
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education and Center for Bionanoengineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Leaf Huang
- Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
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241
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Du K, Li Y, Liu J, Chen W, Wei Z, Luo Y, Liu H, Qi Y, Wang F, Sui J. A bispecific antibody targeting GPC3 and CD47 induced enhanced antitumor efficacy against dual antigen-expressing HCC. Mol Ther 2021; 29:1572-1584. [PMID: 33429083 DOI: 10.1016/j.ymthe.2021.01.006] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 11/23/2020] [Accepted: 01/02/2021] [Indexed: 02/08/2023] Open
Abstract
Glypican-3 (GPC3) is a well-characterized hepatocellular carcinoma (HCC)-associated antigen, yet anti-GPC3 therapies have achieved only minimal clinical progress. CD47 is a ubiquitously expressed innate immune checkpoint that promotes evasion of tumors from immune surveillance. Given both the specific expression of GPC3 in HCC and the known phagocytosis inhibitory effect of CD47 in liver cancer, we hypothesized that a bispecific antibody (BsAb) that co-engages with GPC3 and CD47 may offer excellent antitumor efficacy with minimal toxicity. Here, we generated a novel BsAb: GPC3/CD47 biAb. With the use of both in vitro and in vivo assays, we found that GPC3/CD47 biAb exerts strong antitumor activity preferentially against dual antigen-expressing tumor cells. In hCD47/human signal regulatory protein alpha (hCD47/hSIRPα) humanized mice, GPC3/CD47 biAb had an extended serum half-life without causing systemic toxicity. Importantly, GPC3/CD47 biAb induced enhanced Fc-mediated effector functions to dual antigen-expressing HCC cells in vitro, and both macrophages and neutrophils are required for its strong efficacy against xenograft HCC tumors. Notably, GPC3/CD47 biAb outperformed monotherapies and a combination therapy with anti-CD47 and anti-GPC3 monoclonal antibodies (mAbs) in a xenograft HCC model. Our study illustrates a strategy for improving HCC treatment by boosting innate immune responses and presents new insights to inform antibody design for the future development of innovative immune therapies.
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Affiliation(s)
- Kaixin Du
- School of Life Sciences, Beijing Normal University, Beijing 100875, China; National Institute of Biological Sciences, 7 Science Park Road, Beijing 102206, China
| | - Yulu Li
- National Institute of Biological Sciences, 7 Science Park Road, Beijing 102206, China; PTN Joint Graduate Program, School of Life Sciences, Peking University, Beijing 100871, China
| | - Juan Liu
- National Institute of Biological Sciences, 7 Science Park Road, Beijing 102206, China
| | - Wei Chen
- National Institute of Biological Sciences, 7 Science Park Road, Beijing 102206, China
| | - Zhizhong Wei
- National Institute of Biological Sciences, 7 Science Park Road, Beijing 102206, China; PTN Joint Graduate Program, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Yong Luo
- National Institute of Biological Sciences, 7 Science Park Road, Beijing 102206, China
| | - Huisi Liu
- National Institute of Biological Sciences, 7 Science Park Road, Beijing 102206, China
| | - Yonghe Qi
- National Institute of Biological Sciences, 7 Science Park Road, Beijing 102206, China
| | - Fengchao Wang
- National Institute of Biological Sciences, 7 Science Park Road, Beijing 102206, China; Tsinghua Institute of Multidisciplinary Biomedical Research, Tsinghua University, Beijing 102206, China
| | - Jianhua Sui
- National Institute of Biological Sciences, 7 Science Park Road, Beijing 102206, China; Tsinghua Institute of Multidisciplinary Biomedical Research, Tsinghua University, Beijing 102206, China.
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242
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Immune-Checkpoint Inhibitors in B-Cell Lymphoma. Cancers (Basel) 2021; 13:cancers13020214. [PMID: 33430146 PMCID: PMC7827333 DOI: 10.3390/cancers13020214] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 12/16/2020] [Accepted: 01/05/2021] [Indexed: 12/11/2022] Open
Abstract
Simple Summary Immune-based treatment strategies, which include immune checkpoint inhibition, have recently become a new frontier for the treatment of B-cell-derived lymphoma. Whereas checkpoint inhibition has given oncologists and patients hope in specific lymphoma subtypes like Hodgkin lymphoma, other entities do not benefit from such promising agents. Understanding the factors that determine the efficacy and safety of checkpoint inhibition in different lymphoma subtypes can lead to improved therapeutic strategies, including combinations with various chemotherapies, biologics and/or different immunologic agents with manageable safety profiles. Abstract For years, immunotherapy has been considered a viable and attractive treatment option for patients with cancer. Among the immunotherapy arsenal, the targeting of intratumoral immune cells by immune-checkpoint inhibitory agents has recently revolutionised the treatment of several subtypes of tumours. These approaches, aimed at restoring an effective antitumour immunity, rapidly reached the market thanks to the simultaneous identification of inhibitory signals that dampen an effective antitumor response in a large variety of neoplastic cells and the clinical development of monoclonal antibodies targeting checkpoint receptors. Leading therapies in solid tumours are mainly focused on the cytotoxic T-lymphocyte-associated antigen 4 (CTLA-4) and programmed death 1 (PD-1) pathways. These approaches have found a promising testing ground in both Hodgkin lymphoma and non-Hodgkin lymphoma, mainly because, in these diseases, the malignant cells interact with the immune system and commonly provide signals that regulate immune function. Although several trials have already demonstrated evidence of therapeutic activity with some checkpoint inhibitors in lymphoma, many of the immunologic lessons learned from solid tumours may not directly translate to lymphoid malignancies. In this sense, the mechanisms of effective antitumor responses are different between the different lymphoma subtypes, while the reasons for this substantial difference remain partially unknown. This review will discuss the current advances of immune-checkpoint blockade therapies in B-cell lymphoma and build a projection of how the field may evolve in the near future. In particular, we will analyse the current strategies being evaluated both preclinically and clinically, with the aim of fostering the use of immune-checkpoint inhibitors in lymphoma, including combination approaches with chemotherapeutics, biological agents and/or different immunologic therapies.
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243
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Bouti P, Zhao XW, Verkuijlen PJJH, Tool ATJ, van Houdt M, Köker N, Köker MY, Keskin O, Akbayram S, van Bruggen R, Kuijpers TW, Matlung HL, van den Berg TK. Kindlin3-Dependent CD11b/CD18-Integrin Activation Is Required for Potentiation of Neutrophil Cytotoxicity by CD47-SIRPα Checkpoint Disruption. Cancer Immunol Res 2020; 9:147-155. [PMID: 33355195 DOI: 10.1158/2326-6066.cir-20-0491] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 10/07/2020] [Accepted: 12/09/2020] [Indexed: 11/16/2022]
Abstract
The CD47-signal regulatory protein-alpha (SIRPα) immune checkpoint constitutes a therapeutic target in cancer, and initial clinical studies using inhibitors of CD47-SIRPα interactions in combination with tumor-targeting antibodies show promising results. Blockade of CD47-SIRPα interaction can promote neutrophil antibody-dependent cellular cytotoxicity (ADCC) toward antibody-opsonized targets. Neutrophils induce killing of antibody-opsonized tumor cells by a process identified as trogoptosis, a necrotic/lytic type of cancer cell death that involves trogocytosis, the antibody-mediated endocytic acquisition of cancer membrane fragments by neutrophils. Both trogocytosis and killing strictly depend on CD11b/CD18-(Mac-1)-mediated neutrophil-cancer cell conjugate formation, but the mechanism by which CD47-SIRPα checkpoint disruption promotes cytotoxicity has remained elusive. Here, by using neutrophils from patients with leukocyte adhesion deficiency type III carrying FERMT3 gene mutations, hence lacking the integrin-associated protein kindlin3, we demonstrated that CD47-SIRPα signaling controlled the inside-out activation of the neutrophil CD11b/CD18-integrin and cytotoxic synapse formation in a kindlin3-dependent fashion. Our findings also revealed a role for kindlin3 in trogocytosis and an absolute requirement in the killing process, which involved direct interactions between kindlin3 and CD18 integrin. Collectively, these results identified a dual role for kindlin3 in neutrophil ADCC and provide mechanistic insights into the way neutrophil cytotoxicity is governed by CD47-SIRPα interactions.
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Affiliation(s)
- Panagiota Bouti
- Sanquin Research and Landsteiner Laboratory, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, the Netherlands.
| | - Xi Wen Zhao
- Sanquin Research and Landsteiner Laboratory, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Paul J J H Verkuijlen
- Sanquin Research and Landsteiner Laboratory, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Anton T J Tool
- Sanquin Research and Landsteiner Laboratory, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Michel van Houdt
- Sanquin Research and Landsteiner Laboratory, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Nezihe Köker
- Sanquin Research and Landsteiner Laboratory, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, the Netherlands.,Department of Immunology, Erciyes University Medical Faculty, Kayseri, Turkey
| | - Mustafa Yavuz Köker
- Department of Immunology, Erciyes University Medical Faculty, Kayseri, Turkey
| | - Ozlem Keskin
- Pediatric Allergy and Immunology, Gaziantep University, Gaziantep, Turkey
| | - Sinan Akbayram
- Department of Pediatric Hematology-Oncology, Gaziantep University Medical Faculty, Gaziantep, Turkey
| | - Robin van Bruggen
- Sanquin Research and Landsteiner Laboratory, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Taco W Kuijpers
- Sanquin Research and Landsteiner Laboratory, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, the Netherlands.,Emma Children's Hospital, Amsterdam University Medical Center, Amsterdam, the Netherlands
| | - Hanke L Matlung
- Sanquin Research and Landsteiner Laboratory, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Timo K van den Berg
- Sanquin Research and Landsteiner Laboratory, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, the Netherlands. .,Department of Molecular Cell Biology and Immunology, Amsterdam University Medical Center, Vrije University, Amsterdam, the Netherlands
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244
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Noé V, Aubets E, Félix AJ, Ciudad CJ. Nucleic acids therapeutics using PolyPurine Reverse Hoogsteen hairpins. Biochem Pharmacol 2020; 189:114371. [PMID: 33338475 DOI: 10.1016/j.bcp.2020.114371] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 12/10/2020] [Accepted: 12/11/2020] [Indexed: 02/08/2023]
Abstract
PolyPurine Reverse Hoogsteen hairpins (PPRHs) are DNA hairpins formed by intramolecular reverse Hoogsteen bonds which can bind to polypyrimidine stretches in dsDNA by Watson:Crick bonds, thus forming a triplex and displacing the fourth strand of the DNA complex. PPRHs were first described as a gene silencing tool in vitro for DHFR, telomerase and survivin genes. Then, the effect of PPRHs directed against the survivin gene was also determined in vivo using a xenograft model of prostate cancer cells (PC3). Since then, the ability of PPRHs to inhibit gene expression has been explored in other genes involved in cancer (BCL-2, mTOR, topoisomerase, C-MYC and MDM2), in immunotherapy (SIRPα/CD47 and PD-1/PD-L1 tandem) or in replication stress (WEE1 and CHK1). Furthermore, PPRHs have the ability to target the complementary strand of a G-quadruplex motif as a regulatory element of the TYMS gene. PPRHs have also the potential to correct point mutations in the DNA as shown in two collections of CHO cell lines bearing mutations in either the dhfr or aprt loci. Finally, based on the capability of PPRHs to form triplexes, they have been incorporated as probes in biosensors for the determination of the DNA methylation status of PAX-5 in cancer and the detection of mtLSU rRNA for the diagnosis of Pneumocystis jirovecii. Of note, PPRHs have high stability and do not present immunogenicity, hepatotoxicity or nephrotoxicity in vitro. Overall, PPRHs constitute a new economical biotechnological tool with multiple biomedical applications.
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Affiliation(s)
- Véronique Noé
- Department of Biochemistry and Physiology, School of Pharmacy and Food Sciences, & IN2UB, University of Barcelona, 08028 Barcelona, Spain
| | - Eva Aubets
- Department of Biochemistry and Physiology, School of Pharmacy and Food Sciences, & IN2UB, University of Barcelona, 08028 Barcelona, Spain
| | - Alex J Félix
- Department of Biochemistry and Physiology, School of Pharmacy and Food Sciences, & IN2UB, University of Barcelona, 08028 Barcelona, Spain
| | - Carlos J Ciudad
- Department of Biochemistry and Physiology, School of Pharmacy and Food Sciences, & IN2UB, University of Barcelona, 08028 Barcelona, Spain.
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245
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Kuo TC, Chen A, Harrabi O, Sockolosky JT, Zhang A, Sangalang E, Doyle LV, Kauder SE, Fontaine D, Bollini S, Han B, Fu YX, Sim J, Pons J, Wan HI. Targeting the myeloid checkpoint receptor SIRPα potentiates innate and adaptive immune responses to promote anti-tumor activity. J Hematol Oncol 2020; 13:160. [PMID: 33256806 PMCID: PMC7706287 DOI: 10.1186/s13045-020-00989-w] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Accepted: 11/02/2020] [Indexed: 12/20/2022] Open
Abstract
Background Signal regulatory protein α (SIRPα) is a myeloid-lineage inhibitory receptor that restricts innate immunity through engagement of its cell surface ligand CD47. Blockade of the CD47–SIRPα interaction synergizes with tumor-specific antibodies and T-cell checkpoint inhibitors by promoting myeloid-mediated antitumor functions leading to the induction of adaptive immunity. Inhibition of the CD47–SIRPα interaction has focused predominantly on targeting CD47, which is expressed ubiquitously and contributes to the accelerated blood clearance of anti-CD47 therapeutics. Targeting SIRPα, which is myeloid-restricted, may provide a differential pharmacokinetic, safety, and efficacy profile; however, SIRPα polymorphisms and lack of pan-allelic and species cross-reactive agents have limited the clinical translation of antibodies against SIRPα. Here, we report the development of humanized AB21 (hAB21), a pan-allelic anti-SIRPα antibody that binds human, cynomolgus monkey, and mouse SIRPα alleles with high affinity and blocks the interaction with CD47. Methods Human macrophages derived from donors with various SIRPα v1 and v2 allelic status were used to assess the ability of hAB21 to enhance phagocytosis. HAB21_IgG subclasses were evaluated for targeted depletion of peripheral blood mononuclear cells, phagocytosis and in vivo efficacy in xenograft models. Combination therapy with anti-PD1/anti-PD-L1 in several syngeneic models was performed. Immunophenotyping of tissues from MC38 tumor-bearing mice treated with AB21 and anti-PD-1 was evaluated. PK, PD and tolerability of hAB21 were evaluated in cynomolgus monkeys.
Results SIRPα blockade with hAB21 promoted macrophage-mediated antibody-dependent phagocytosis of tumor cells in vitro and improved responses to rituximab in the Raji human tumor xenograft mouse model. Combined with PD-1/PD-L1 blockade, AB21 improved response rates by facilitating monocyte activation, dendritic cell activation, and T cell effector functions resulting in long term, durable antitumor immunity. In cynomolgus monkeys, hAB21 has a half-life of 5.3 days at 10 mg/kg and complete target occupancy with no hematological toxicity or adverse findings at doses up to 30 mg/kg. Conclusions The in vitro and in vivo antitumor activity of hAB21 broadly recapitulates that of CD47 targeted therapies despite differences in ligand expression, binding partners, and function, validating the CD47–SIRPα axis as a fundamental myeloid checkpoint pathway and its blockade as promising therapeutic intervention for treatment of human malignancies.
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Affiliation(s)
- Tracy C Kuo
- ALX Oncology, Burlingame, CA, USA. .,Tallac Therapeutics, Burlingame, CA, USA.
| | - Amy Chen
- ALX Oncology, Burlingame, CA, USA.,Tallac Therapeutics, Burlingame, CA, USA
| | - Ons Harrabi
- ALX Oncology, Burlingame, CA, USA.,Tallac Therapeutics, Burlingame, CA, USA
| | | | - Anli Zhang
- Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Emma Sangalang
- ALX Oncology, Burlingame, CA, USA.,Tallac Therapeutics, Burlingame, CA, USA
| | - Laura V Doyle
- ALX Oncology, Burlingame, CA, USA.,Tallac Therapeutics, Burlingame, CA, USA
| | - Steven E Kauder
- ALX Oncology, Burlingame, CA, USA.,Coherus BioSciences, Redwood City, CA, USA
| | - Danielle Fontaine
- ALX Oncology, Burlingame, CA, USA.,Tallac Therapeutics, Burlingame, CA, USA
| | | | - Bora Han
- ALX Oncology, Burlingame, CA, USA.,ProLynx Inc., San Francisco, CA, USA
| | - Yang-Xin Fu
- Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Janet Sim
- ALX Oncology, Burlingame, CA, USA.,Tallac Therapeutics, Burlingame, CA, USA
| | | | - Hong I Wan
- ALX Oncology, Burlingame, CA, USA.,Tallac Therapeutics, Burlingame, CA, USA
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246
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Li Z, Fei T. Improving Cancer Immunotherapy with CRISPR-Based Technology. ACTA ACUST UNITED AC 2020; 4:e1900253. [PMID: 33245213 DOI: 10.1002/adbi.201900253] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Revised: 12/29/2019] [Indexed: 12/19/2022]
Abstract
The rapidly evolving field of immunotherapy has attracted great attention in the field of cancer research and already revolutionized the clinical practice standard for treating cancer. Genetically engineered T cells expressing either T cell receptors or chimeric antigen receptors represent novel treatment modalities and are considered powerful weapons to fight cancer. The immune checkpoint blockade, which harnesses the negative control signaling behind the anti-tumor immune response with therapeutic antibodies by blocking cytotoxic T lymphocyte-associated protein 4 or the programmed cell death 1 pathways are another mainstream direction for cancer immunotherapy. In addition to cytotoxic T cells, other immune cell types such as nature killer cells and macrophages also possess the ability to eradicate cancer cells, which may serve as the basis to develop novel cancer immunotherapies. The advent of cutting-edge genome editing technology, especially clustered regularly interspaced palindromic repeats (CRISPR)-based tools, has greatly expedited many biomedical research areas, including cancer immunology and immunotherapy. In this review, the contribution of current CRISPR techniques to basic and translational cancer immunology research is discussed, and the future for cancer immunotherapy in the age of CRISPR is predicted.
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Affiliation(s)
- Zexu Li
- College of Life and Health Sciences, Northeastern University, Shenyang, 110819, P. R. China.,Key Laboratory of Data Analytics and Optimization for Smart Industry (Northeastern University), Ministry of Education, Shenyang, 110819, P. R. China
| | - Teng Fei
- College of Life and Health Sciences, Northeastern University, Shenyang, 110819, P. R. China.,Key Laboratory of Data Analytics and Optimization for Smart Industry (Northeastern University), Ministry of Education, Shenyang, 110819, P. R. China
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247
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Zheng Y, Wang Z, Wei S, Liu Z, Chen G. Epigenetic silencing of chemokine CCL2 represses macrophage infiltration to potentiate tumor development in small cell lung cancer. Cancer Lett 2020; 499:148-163. [PMID: 33253790 DOI: 10.1016/j.canlet.2020.11.034] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2019] [Revised: 11/18/2020] [Accepted: 11/21/2020] [Indexed: 12/20/2022]
Abstract
Highly invasive and rapidly fatal, small-cell lung cancer (SCLC) has been an insurmountable gulf since discovery. Innate immunity plays a vital role in anti-tumor response, among which macrophages contribute to an indispensable character. Here, we found that macrophage infiltration in SCLC reduced significantly in a stage-dependent manner, attributed to the decreased expression of CCL2, a potent chemoattractant for monocytes. Validated by ChIP-qPCR and MassArray methylation analysis, CCL2 expression was inhibited by EZH2-mediated H3K27me3 in the enhancer regions and DNMT1-mediated DNA methylation in the promoter regions, the process of which could be reversed by small-molecular compounds, EPZ011989 and Decitabine. Direct cell-cell contact between SCLC cells and macrophages skewed the phenotype of macrophages to be more M1-like. Furthermore, in an ectopic engraft model of SCLC, disruption of EZH2/DNMT1 function using the combination treatment of EPZ011989 and Decitabine potently abrogated the inhibition of macrophage infiltration and thus suppressed tumor growth, the effect of which was impaired by CCL2 neutralization or macrophage depletion. Overall, this work provides new insights into the role of macrophages in SCLC and establishes a rationale for constructing novel therapeutic avenues for SCLC patients.
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Affiliation(s)
- Yang Zheng
- Department of Oncology, First Hospital, Jilin University, 130012, Jilin, PR China.
| | - Zhihong Wang
- Institute of Pharmacology and Toxicology, Academy of Military Medical Sciences, 100850, Beijing, PR China; School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, 210009, PR China
| | - Simeng Wei
- Department of Oncology, First Hospital, Jilin University, 130012, Jilin, PR China
| | - Ziling Liu
- Department of Oncology, First Hospital, Jilin University, 130012, Jilin, PR China.
| | - Guojiang Chen
- Institute of Pharmacology and Toxicology, Academy of Military Medical Sciences, 100850, Beijing, PR China.
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248
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Hu J, Xiao Q, Dong M, Guo D, Wu X, Wang B. Glioblastoma Immunotherapy Targeting the Innate Immune Checkpoint CD47-SIRPα Axis. Front Immunol 2020; 11:593219. [PMID: 33329583 PMCID: PMC7728717 DOI: 10.3389/fimmu.2020.593219] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Accepted: 11/02/2020] [Indexed: 12/14/2022] Open
Abstract
Glioblastoma Multiforme (GBM) is the most common and aggressive form of intracranial tumors with poor prognosis. In recent years, tumor immunotherapy has been an attractive strategy for a variety of tumors. Currently, most immunotherapies take advantage of the adaptive anti-tumor immunity, such as cytotoxic T cells. However, the predominant accumulation of tumor-associated microglia/macrophages (TAMs) results in limited success of these strategies in the glioblastoma. To improve the immunotherapeutic efficacy for GBM, it is detrimental to understand the role of TAM in glioblastoma immunosuppressive microenvironment. In this review, we will discuss the roles of CD47-SIRPα axis in TAMs infiltration and activities and the promising effects of targeting this axis on the activation of both innate and adaptive antitumor immunity in glioblastoma.
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Affiliation(s)
- Jinyang Hu
- Department of Neurosurgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qungen Xiao
- Department of Neurosurgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Minhai Dong
- Department of Neurosurgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Dongsheng Guo
- Department of Neurosurgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xudong Wu
- Department of Cell Biology, 2011 Collaborative Innovation Center of Tianjin for Medical Epigenetics, Tianjin Key Laboratory of Medical Epigenetics, Tianjin Medical University, Tianjin, China.,Department of Neurosurgery, Tianjin Medical University General Hospital and Laboratory of Neuro-Oncology, Tianjin Neurological Institute, Tianjin, China
| | - Baofeng Wang
- Department of Neurosurgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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249
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Chen Y, Jin H, Song Y, Huang T, Cao J, Tang Q, Zou Z. Targeting tumor-associated macrophages: A potential treatment for solid tumors. J Cell Physiol 2020; 236:3445-3465. [PMID: 33200401 DOI: 10.1002/jcp.30139] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 10/20/2020] [Accepted: 10/23/2020] [Indexed: 12/14/2022]
Abstract
Tumor-associated macrophages (TAMs) in solid tumors exert protumor activities by releasing cytokines or growth factors into the tumor microenvironment. Increasing studies have also shown that TAMs play a key role in tumor progression, such as tumor angiogenesis, immunosuppression, cell proliferation, migration, invasion, and metastasis. A large body of evidence shows that the abundance of TAMs in solid tumors is correlated with poor disease prognosis and resistance to therapies. Therefore, targeting TAMs in solid tumors is considered to be a promising immunotherapeutic strategy. At present, the therapeutic strategies of targeting macrophages mainly include limiting monocyte recruitment, depletion strategies, promoting macrophage phagocytic activity, and induction of macrophage reprogramming. Additionally, targeting TAMs in combination with conventional therapies has been demonstrated to be a promising therapeutic strategy in solid tumors. In the present review, we summarized various TAMs-targeting therapeutic strategies for treating solid tumors. This review also discusses the challenges for targeting TAMs as tumor treatments, the obstacles in clinical trials, and the perspective for the future development of TAMs-targeting therapies for various cancers.
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Affiliation(s)
- Yibing Chen
- Genetic and Prenatal Diagnosis Center, Department of Gynecology and Obstetrics, First Affiliated Hospital, Zhengzhou University, Zhengzhou, China
| | - Huan Jin
- MOE Key Laboratory of Laser Life Science & Guangdong Provincial Key Laboratory of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou, China
| | - Yucen Song
- Genetic and Prenatal Diagnosis Center, Department of Gynecology and Obstetrics, First Affiliated Hospital, Zhengzhou University, Zhengzhou, China
| | - Ting Huang
- MOE Key Laboratory of Laser Life Science & Guangdong Provincial Key Laboratory of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou, China
| | - Jun Cao
- Genetic and Prenatal Diagnosis Center, Department of Gynecology and Obstetrics, First Affiliated Hospital, Zhengzhou University, Zhengzhou, China
| | - Qing Tang
- MOE Key Laboratory of Laser Life Science & Guangdong Provincial Key Laboratory of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou, China
| | - Zhengzhi Zou
- MOE Key Laboratory of Laser Life Science & Guangdong Provincial Key Laboratory of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou, China
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250
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Szlosarek PW, Phillips MM, Pavlyk I, Steele J, Shamash J, Spicer J, Kumar S, Pacey S, Feng X, Johnston A, Bomalaski J, Moir G, Lau K, Ellis S, Sheaff M. Expansion Phase 1 Study of Pegargiminase Plus Pemetrexed and Cisplatin in Patients With Argininosuccinate Synthetase 1-Deficient Mesothelioma: Safety, Efficacy, and Resistance Mechanisms. JTO Clin Res Rep 2020; 1:100093. [PMID: 34589965 PMCID: PMC8474273 DOI: 10.1016/j.jtocrr.2020.100093] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Accepted: 08/27/2020] [Indexed: 12/29/2022] Open
Abstract
INTRODUCTION Pegargiminase (ADI-PEG 20; ADI) degrades arginine and potentiates pemetrexed (Pem) cytotoxicity in argininosuccinate synthetase 1 (ASS1)-deficient malignant pleural mesothelioma (MPM). We conducted a phase 1 dose-expansion study at the recommended phase 2 dose of ADI-PEG 20 with Pem and cisplatin (ADIPemCis), to further evaluate arginine-lowering therapy in ASS1-deficient MPM and explore the mechanisms of resistance. METHODS A total of 32 patients with ASS1-deficient MPM (11 epithelioid; 10 biphasic;11 sarcomatoid) who were chemonaive received weekly intramuscular pegargiminase (36 mg/m2) with Pem (500 mg/m2) and cisplatin (75 mg/m2) intravenously, every 3 weeks (six cycles maximum). Maintenance pegargiminase was permitted until disease progression or withdrawal. Safety, pharmacodynamics, immunogenicity, and efficacy were determined. Biopsies were performed in progressing patients to explore the mechanisms of resistance to pegargiminase. RESULTS The treatment was well tolerated. Most adverse events were of grade 1/2, whereas four nonhematologic grade 3/4 adverse events related to pegargiminase were reversible. Plasma arginine decreased whereas citrulline increased; this was maintained by 18 weeks of ADIPemCis therapy. The disease control rate in 31 assessed patients was 93.5% (n = 29 of 31; 95% confidence interval [CI]: 78.6%-99.2%), with a partial response rate of 35.5% (n = 11 of 31; 95% CI: 19.2%-54.6%). The median progression-free and overall survivals were 5.6 (95% CI: 4.0-6.0) and 10.1 (95% CI: 6.1-11.1) months, respectively. Progression biopsies on pegargiminase revealed a statistically significant influx of macrophages (n = 6; p = 0.0255) and patchy tumoral ASS1 reexpression (n = 2 of 6). In addition, we observed increased tumoral programmed death-ligand 1-an ADI-PEG 20 inducible gene-and the formation of CD3-positive T lymphocyte aggregates on disease progression (n = 2 of 5). CONCLUSIONS The dose expansion of ADIPemCis confirmed the high clinical activity and good tolerability in ASS1-deficient poor-prognosis mesothelioma, underpinning an ongoing phase 3 study (ClinicalTrials.govNCT02709512). Notably, resistance to pegargiminase correlated with marked macrophage recruitment and-along with the tumor immune microenvironment-warrants further study to optimize arginine deprivation for the treatment of mesothelioma.
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Affiliation(s)
- Peter W. Szlosarek
- Center for Cancer Biomarkers and Biotherapeutics, Barts Cancer Institute (BCI)—A Cancer Research UK Center of Excellence, Queen Mary University of London, London, United Kingdom
| | - Melissa M. Phillips
- Center for Cancer Biomarkers and Biotherapeutics, Barts Cancer Institute (BCI)—A Cancer Research UK Center of Excellence, Queen Mary University of London, London, United Kingdom
- Department of Medical Oncology, Barts Health NHS Trust, St Bartholomew’s Hospital, London, United Kingdom
| | - Iuliia Pavlyk
- Center for Cancer Biomarkers and Biotherapeutics, Barts Cancer Institute (BCI)—A Cancer Research UK Center of Excellence, Queen Mary University of London, London, United Kingdom
| | - Jeremy Steele
- Department of Medical Oncology, Barts Health NHS Trust, St Bartholomew’s Hospital, London, United Kingdom
| | - Jonathan Shamash
- Department of Medical Oncology, Barts Health NHS Trust, St Bartholomew’s Hospital, London, United Kingdom
| | - James Spicer
- School of Cancer and Pharmaceutical Sciences, King’s College London, Guy’s Hospital, London, United Kingdom
| | - Sanjeev Kumar
- Department of Oncology, University of Cambridge, Cambridge, United Kingdom
| | - Simon Pacey
- Department of Oncology, University of Cambridge, Cambridge, United Kingdom
| | - Xiaoxing Feng
- Polaris Pharmaceuticals, Inc., San Diego, California
| | | | | | - Graeme Moir
- Department of Plastic Surgery, Barts Health NHS Trust, Royal London Hospital, London, United Kingdom
| | - Kelvin Lau
- Department of Cardiothoracic Surgery, Barts Health NHS Trust, St Bartholomew’s Hospital, London, United Kingdom
| | - Stephen Ellis
- Department of Diagnostic Imaging, Barts Health NHS Trust, St Bartholomew’s Hospital, London, United Kingdom
| | - Michael Sheaff
- Department of Histopathology, Pathology and Pharmacy Building, Barts Health NHS Trust, Royal London Hospital, London, United Kingdom
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