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Chen X, Yuan M, Zhong T, Wang M, Wu F, Lu J, Sun D, Xiao C, Sun Y, Hu Y, Wu M, Wang L, Yu J, Chen D. LILRB2 inhibition enhances radiation sensitivity in non-small cell lung cancer by attenuating radiation-induced senescence. Cancer Lett 2024; 593:216930. [PMID: 38705566 DOI: 10.1016/j.canlet.2024.216930] [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: 02/27/2024] [Revised: 04/17/2024] [Accepted: 04/29/2024] [Indexed: 05/07/2024]
Abstract
Radiotherapy (RT) in non-small cell lung cancer (NSCLC) triggers cellular senescence, complicating tumor microenvironments and affecting treatment outcomes. This study examines the role of lymphocyte immunoglobulin-like receptor B2 (LILRB2) in modulating RT-induced senescence and radiosensitivity in NSCLC. Through methodologies including irradiation, lentivirus transfection, and various molecular assays, we assessed LILRB2's expression and its impact on cellular senescence levels and tumor cell behaviors. Our findings reveal that RT upregulates LILRB2, facilitating senescence and a senescence-associated secretory phenotype (SASP), which in turn enhances tumor proliferation and resistance to radiation. Importantly, LILRB2 silencing attenuates these effects by inhibiting the JAK2/STAT3 pathway, significantly increasing radiosensitivity in NSCLC models. Clinical data correlate high LILRB2 expression with reduced RT response and poorer prognosis, suggesting LILRB2's pivotal role in RT-induced senescence and its potential as a therapeutic target to improve NSCLC radiosensitivity.
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Affiliation(s)
- Xiaozheng Chen
- Department of Radiation Oncology and Shandong Provincial Key Laboratory of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - Meng Yuan
- Department of Radiation Oncology and Shandong Provincial Key Laboratory of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - Tao Zhong
- Clinical College of Medicine, Jining Medical University, Jining, Shandong, China
| | - Minglei Wang
- Department of Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - Fei Wu
- Department of Radiation Oncology and Shandong Provincial Key Laboratory of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - Jie Lu
- Department of Radiation Oncology and Shandong Provincial Key Laboratory of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - Dongfeng Sun
- Department of Radiation Oncology and Shandong Provincial Key Laboratory of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - Changyan Xiao
- Department of Radiation Oncology and Shandong Provincial Key Laboratory of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - Yuping Sun
- Department of Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - Yun Hu
- Department of Radiation Oncology, The University of Texas M D Anderson Cancer Center, Houston, TX, USA
| | - Meng Wu
- Department of Radiation Oncology and Shandong Provincial Key Laboratory of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - Linlin Wang
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China.
| | - Jinming Yu
- Department of Radiation Oncology and Shandong Provincial Key Laboratory of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China; Research Unit of Radiation Oncology, Chinese Academy of Medical Sciences, Jinan, Shandong, China.
| | - Dawei Chen
- Department of Radiation Oncology and Shandong Provincial Key Laboratory of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China; Department of Radiation Oncology, Shandong University Cancer Center, Jinan, Shandong, China.
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Wang S, Wang J, Gong W, Zhang F, Chen X, Xu H, Han Y, Fu X, Wang L, Li J, Gao A, Sun Y. ILT4 facilitates angiogenesis in non-small cell lung cancer. Cancer Sci 2024; 115:1459-1475. [PMID: 38433526 DOI: 10.1111/cas.16126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 02/12/2024] [Accepted: 02/16/2024] [Indexed: 03/05/2024] Open
Abstract
Antiangiogenic therapy targeting VEGF-A has become the standard of first-line therapy for non-small cell lung cancer (NSCLC). However, its clinical response rate is still less than 50%, and most patients eventually develop resistance, even when using combination therapy with chemotherapy. The major cause of resistance is the activation of complex bypass signals that induce angiogenesis and tumor progression. Therefore, exploring novel proangiogenic mechanisms and developing promising targets for combination therapy are crucial for improving the efficacy of antiangiogenic therapy. Immunoglobulin-like transcript (ILT) 4 is a classic immunosuppressive molecule that inhibits myeloid cell activation. Recent studies have shown that tumor cell-derived ILT4 drives tumor progression via the induction of malignant biologies and creation of an immunosuppressive microenvironment. However, whether and how ILT4 participates in NSCLC angiogenesis remain elusive. Herein, we found that enriched ILT4 in NSCLC is positively correlated with high microvessel density, advanced disease, and poor overall survival. Tumor cell-derived ILT4 induced angiogenesis both in vitro and in vivo and tumor progression and metastasis in vivo. Mechanistically, ILT4 was upregulated by its ligand angiopoietin-like protein 2 (ANGPTL2). Their interaction subsequently activated the ERK1/2 signaling pathway to increase the secretion of the proangiogenic factors VEGF-A and MMP-9, which are responsible for NSCLC angiogenesis. Our study explored a novel mechanism for ILT4-induced tumor progression and provided a potential target for antiangiogenic therapy in NSCLC.
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Affiliation(s)
- Shuyun Wang
- Phase I Clinical Research Center, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - Jing Wang
- Medical Research & Laboratory Diagnostic Center, Central Hospital affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Wenjing Gong
- Department of Oncology, Yantai Yuhuangding Hospital, Medical College, Qingdao University, Yantai, Shandong, China
| | - Fang Zhang
- Department of Oncology, Central Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Xiaozheng Chen
- Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - Huijun Xu
- Department of Oncology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China
| | - Yali Han
- Department of Radiation Oncology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Xuebing Fu
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - Leirong Wang
- Phase I Clinical Research Center, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China
- Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Juan Li
- Phase I Clinical Research Center, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - Aiqin Gao
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - Yuping Sun
- Phase I Clinical Research Center, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China
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Mitra A, Kumar A, Amdare NP, Pathak R. Current Landscape of Cancer Immunotherapy: Harnessing the Immune Arsenal to Overcome Immune Evasion. BIOLOGY 2024; 13:307. [PMID: 38785789 PMCID: PMC11118874 DOI: 10.3390/biology13050307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Revised: 04/24/2024] [Accepted: 04/24/2024] [Indexed: 05/25/2024]
Abstract
Cancer immune evasion represents a leading hallmark of cancer, posing a significant obstacle to the development of successful anticancer therapies. However, the landscape of cancer treatment has significantly evolved, transitioning into the era of immunotherapy from conventional methods such as surgical resection, radiotherapy, chemotherapy, and targeted drug therapy. Immunotherapy has emerged as a pivotal component in cancer treatment, harnessing the body's immune system to combat cancer and offering improved prognostic outcomes for numerous patients. The remarkable success of immunotherapy has spurred significant efforts to enhance the clinical efficacy of existing agents and strategies. Several immunotherapeutic approaches have received approval for targeted cancer treatments, while others are currently in preclinical and clinical trials. This review explores recent progress in unraveling the mechanisms of cancer immune evasion and evaluates the clinical effectiveness of diverse immunotherapy strategies, including cancer vaccines, adoptive cell therapy, and antibody-based treatments. It encompasses both established treatments and those currently under investigation, providing a comprehensive overview of efforts to combat cancer through immunological approaches. Additionally, the article emphasizes the current developments, limitations, and challenges in cancer immunotherapy. Furthermore, by integrating analyses of cancer immunotherapy resistance mechanisms and exploring combination strategies and personalized approaches, it offers valuable insights crucial for the development of novel anticancer immunotherapeutic strategies.
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Affiliation(s)
- Ankita Mitra
- Laura and Isaac Perlmutter Cancer Center, New York University Langone Medical Center, New York, NY 10016, USA
| | - Anoop Kumar
- Molecular Diagnostic Laboratory, National Institute of Biologicals, Noida 201309, Uttar Pradesh, India
| | - Nitin P. Amdare
- Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, New York, NY 10461, USA
| | - Rajiv Pathak
- Department of Genetics, Albert Einstein College of Medicine, Bronx, New York, NY 10461, USA
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Durmanova V, Tedla M, Rada D, Bandzuchova H, Kuba D, Suchankova M, Ocenasova A, Bucova M. Analysis of HLA-G 14 bp Insertion/Deletion Polymorphism and HLA-G, ILT2 and ILT4 Expression in Head and Neck Squamous Cell Carcinoma Patients. Diseases 2024; 12:34. [PMID: 38391781 PMCID: PMC10888050 DOI: 10.3390/diseases12020034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 02/04/2024] [Accepted: 02/06/2024] [Indexed: 02/24/2024] Open
Abstract
HLA-G is the checkpoint molecule involved in the suppression of the immune response. Increased expression of HLA-G and its ILTs receptors have been correlated with tumor progression in various cancer types. In head and neck squamous cell carcinoma (HNSCC) tumors, the effect of HLA-G, ILT2 and ILT4 expression on cancer development has to be explained. The 34 HNSCC patients and 98 controls were genotyped for the HLA-G 14 bp ins/del polymorphism. In HNSCC lesions, HLA-G, ILT2 and ILT4 mRNA expression was analysed using real-time PCR. The association between HLA-G, ILT2 and ILT4 mRNA expression and clinical variables (age at onset, TNM staging system and p16 positivity) was also evaluated. No genetic association between the HLA-G 14 bp ins/del and HNSCC risk was detected (p > 0.05). However, in the non-metastatic HNSCC group, a significantly higher HLA-G mRNA expression was noted in tumors in the T4 stage compared to those in the T1 and T2 stages (p = 0.0289). ILT2 mRNA expression was significantly increased in non-metastatic vs. metastatic tumors (p = 0.0269). Furthermore, a significantly higher ILT4 mRNA expression was noted in tumors in the T1+T2 stage compared to those in the T3 stage (p = 0.0495). Our results suggest that the HLA-G molecule creates an immunological microenvironment involved in HNSCC development.
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Affiliation(s)
- Vladimira Durmanova
- Institute of Immunology, Faculty of Medicine, Comenius University in Bratislava, 811 08 Bratislava, Slovakia
| | - Miroslav Tedla
- Department of Ears, Nose and Throat and Head and Neck Surgery, Faculty of Medicine, University Hospital Bratislava, Comenius University in Bratislava, 851 07 Bratislava, Slovakia
| | - Dusan Rada
- Department of Ears, Nose and Throat and Head and Neck Surgery, Faculty of Medicine, University Hospital Bratislava, Comenius University in Bratislava, 851 07 Bratislava, Slovakia
| | | | - Daniel Kuba
- National Transplant Organisation, 831 01 Bratislava, Slovakia
| | - Magda Suchankova
- Institute of Immunology, Faculty of Medicine, Comenius University in Bratislava, 811 08 Bratislava, Slovakia
| | - Agata Ocenasova
- Institute of Immunology, Faculty of Medicine, Comenius University in Bratislava, 811 08 Bratislava, Slovakia
| | - Maria Bucova
- Institute of Immunology, Faculty of Medicine, Comenius University in Bratislava, 811 08 Bratislava, Slovakia
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Zhang H, Gao A, Liu Q, Zhang F, Wang S, Chen X, Shi W, Zhang Y, Liu Q, Zheng Y, Sun Y. ILT4 reprograms glucose metabolism to promote tumor progression in triple-negative breast cancer. J Cell Sci 2023; 136:jcs260964. [PMID: 37622462 DOI: 10.1242/jcs.260964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Accepted: 08/16/2023] [Indexed: 08/26/2023] Open
Abstract
Triple-negative breast cancer (TNBC) is the most aggressive and poorly treated subtype of breast cancer. Identifying novel drivers and mechanisms for tumor progression is essential for precise targeted therapy of TNBC. Immunoglobulin-like transcript 4 (ILT4; also known as LILRB2) is a classic myeloid suppressor for their activation and immune response. Our recent results found that ILT4 is also highly expressed in lung cancer cells, where it has a role in promoting immune evasion and thus tumor formation. However, the expression and function of ILT4 in breast cancer remains elusive. Here, using our patient cohort and public database analysis, we found that TNBC displayed the most abundant ILT4 expression among all breast cancer subtypes. Functionally, enriched ILT4 promoted TNBC cell proliferation, migration and invasion in vitro, as well as tumor growth and metastasis in vivo. Further mechanistic analysis revealed that ILT4 reprogrammed aerobic glycolysis of tumor cells via AKT-mTOR signaling-mediated glucose transporter 3 (GLUT3; also known as SLC2A3) and pyruvate kinase muscle 2 (PKM2, an isoform encoded by PKM) overexpression. ILT4 inhibition in TNBC reduced tumor progression and GLUT3 and PKM2 expression in vivo. Our study identified a novel driver for TNBC progression and proposed a promising strategy to combat TNBC by targeting ILT4.
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Affiliation(s)
- Haiqin Zhang
- Department of Oncology, Jinan Central Hospital, Shandong University, Jinan, 250013 Shandong, P. R. China
- Department of Oncology, Central hospital affiliated to Shandong First Medical University, Jinan, 250013 Shandong, P. R. China
- Research Center of Translational Medicine, Laboratory Animal Center, Central Hospital Affiliated to Shandong First Medical University, Jinan, 250013 Shandong, P. R. China
| | - Aiqin Gao
- Department of Thoracic Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong Academy of Medical Sciences, Shandong First Medical University, Jinan, 250117 Shandong, P. R. China
| | - Qiaohong Liu
- Department of Ultrasound, Central Hospital Affiliated to Shandong First Medical University, Jinan, 250013 Shandong, P. R. China
| | - Fang Zhang
- Department of Oncology, Central hospital affiliated to Shandong First Medical University, Jinan, 250013 Shandong, P. R. China
- Research Center of Translational Medicine, Laboratory Animal Center, Central Hospital Affiliated to Shandong First Medical University, Jinan, 250013 Shandong, P. R. China
| | - Shuyun Wang
- Phase I Clinical Research Center, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, 250117 Shandong, P. R. China
| | - Xiaozheng Chen
- Department of Radiation Oncology and Shandong Provincial Key Laboratory of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, 250117 Shandong, P. R. China
| | - Wenjing Shi
- Jinan Central Hospital, Shandong University, Jinan, 250013 Shandong, P. R. China
| | - Ye Zhang
- Department of Oncology, Jinan Central Hospital, Weifang Medical University, Weifang, 250013 Shandong, P. R. China
| | - Qian Liu
- Department of Oncology, Jinan Central Hospital, Weifang Medical University, Weifang, 250013 Shandong, P. R. China
| | - Yan Zheng
- Research Center of Translational Medicine, Laboratory Animal Center, Central Hospital Affiliated to Shandong First Medical University, Jinan, 250013 Shandong, P. R. China
| | - Yuping Sun
- Phase I Clinical Research Center, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, 250117 Shandong, P. R. China
- Phase I Clinical Research Center, Shandong University Cancer Center, Shandong Cancer Hospital and Institute, Jinan, 250117 Shandong, P. R. China
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Wu P, Guo Y, Xiao L, Yuan J, Tang C, Dong J, Qian Z. LILRB2-containing small extracellular vesicles from glioblastoma promote tumor progression by promoting the formation and expansion of myeloid-derived suppressor cells. Cancer Immunol Immunother 2023:10.1007/s00262-023-03395-6. [PMID: 36853330 DOI: 10.1007/s00262-023-03395-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Accepted: 02/02/2023] [Indexed: 03/01/2023]
Abstract
BACKGROUND Leukocyte immunoglobulin-like receptor subfamily B2 (LILRB2) was reported to be an inhibitory molecule with suppressive functions. sEVs mediate communication between cancer cells and other cells. However, the existence of LILRB2 on sEVs in circulation and the function of sEVs-LILRB2 are still unknown. This study aims to investigate the role of LILRB2 in GBM and determine how LILRB2 in sEVs regulates tumor immunity. METHODS LILRB2 expression in normal brain and GBM tissues was detected by immunohistochemistry, and the effect of LILRB2 on prognosis was evaluated in an orthotopic brain tumor model. Next, a subcutaneous tumor model was constructed to evaluate the function of pirb in vivo. The immune cells in the tumor sites and spleen were detected by immunofluorescence staining and flow cytometry. Then, the presence of pirb in sEVs was confirmed by WB. The percentage of immune cells after incubation with sEVs from GL261 (GL261-sEVs) or sEVs from GL261-pirb+ (GL261-sEVs-pirb) was detected by flow cytometry. Then, the effect of pirb on sEVs was evaluated by a tumor-killing assay and proliferation assay. Finally, subcutaneous tumor models were constructed to evaluate the function of pirb on sEVs. RESULTS LILRB2 was overexpressed in human GBM tissue and was closely related to an immunosuppressive TME in GBM. Then, a protumor ability of LILRB2 was observed in subcutaneous tumor models, which was related to lower CD8 + T cells and higher MDSCs (myeloid-derived suppressor cells) in the tumor and spleen compared to those of the control group. Next, we found that pirb on sEVs (sEVs-pirb) inhibits the function of CD8 + T cells by promoting the formation and expansion of MDSCs. Furthermore, the protumor function of sEVs-pirb was demonstrated in subcutaneous tumor models. CONCLUSION We discovered that LILRB2/pirb can be transmitted between GBM cells via sEVs and that pirb on sEVs induces the formation and expansion of MDSCs. The induced MDSCs facilitate the formation of an immunosuppressive TME.
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Affiliation(s)
- Peitao Wu
- Department of Neurosurgery, The Second Affiliated Hospital of Soochow University, Soochow, 215000, People's Republic of China
| | - Yuhang Guo
- Department of Neurosurgery, The First Affiliated Hospital of Wenzhou Medical University, Nanbaixiang, Wenzhou, China
| | - Li Xiao
- Department of Neurosurgery, The Second Affiliated Hospital of Soochow University, Soochow, 215000, People's Republic of China
| | - Jiaqi Yuan
- Department of Neurosurgery, The Second Affiliated Hospital of Soochow University, Soochow, 215000, People's Republic of China
| | - Chao Tang
- Department of Neurosurgery, Huashan Hospital, Shanghai, China.
| | - Jun Dong
- Department of Neurosurgery, The Second Affiliated Hospital of Soochow University, Soochow, 215000, People's Republic of China.
| | - Zhiyuan Qian
- Department of Neurosurgery, The Second Affiliated Hospital of Soochow University, Soochow, 215000, People's Republic of China.
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Dai X, Zhu K. Cold atmospheric plasma: Novel opportunities for tumor microenvironment targeting. Cancer Med 2023; 12:7189-7206. [PMID: 36762766 PMCID: PMC10067048 DOI: 10.1002/cam4.5491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 07/17/2022] [Accepted: 11/17/2022] [Indexed: 02/11/2023] Open
Abstract
With mounting preclinical and clinical evidences on the prominent roles of the tumor microenvironment (TME) played during carcinogenesis, the TME has been recognized and used as an important onco-therapeutic target during the past decade. Delineating our current knowledge on TME components and their functionalities can help us recognize novel onco-therapeutic opportunities and establish treatment modalities towards desirable anti-cancer outcome. By identifying and focusing on primary cellular components in the TME, that is, tumor-infiltrating lymphocytes, tumor-associated macrophages, cancer-associated fibroblasts and mesenchymal stem cells, we decomposed their primary functionalities during carcinogenesis, categorized current therapeutic approaches utilizing traits of these components, and forecasted possible benefits that cold atmospheric plasma, a redox modulating tool with selectivity against cancer cells, may convey by targeting the TME. Our insights may open a novel therapeutic avenue for cancer control taking advantages of redox homeostasis and immunostasis.
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Affiliation(s)
- Xiaofeng Dai
- Wuxi School of Medicine, Jiangnan University, Wuxi, China
| | - Kaiyuan Zhu
- Affiliated Hospital of Jiangnan University, Wuxi, China
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Chen QY, Zhou WJ, Zhang JG, Zhang X, Han QY, Lin A, Yan WH. Prognostic significance of the immune checkpoint HLA-G/ILT-4 in the survival of patients with gastric cancer. Int Immunopharmacol 2022; 109:108798. [DOI: 10.1016/j.intimp.2022.108798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 04/20/2022] [Accepted: 04/21/2022] [Indexed: 11/24/2022]
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Shi W, Zhang F, Chen X, Wang S, Zhang H, Yang Z, Wang G, Zheng Y, Han Y, Sun Y, Gao A. Tumor-derived immunoglobulin like transcript 5 induces suppressive immunocyte infiltration in colorectal cancer. Cancer Sci 2022; 113:1939-1954. [PMID: 35377522 PMCID: PMC9207357 DOI: 10.1111/cas.15360] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Revised: 03/23/2022] [Accepted: 03/25/2022] [Indexed: 11/28/2022] Open
Abstract
Infiltration of immunosuppressive cells in the tumor microenvironment (TME) induced colorectal cancer (CRC) progression and its resistance to immunotherapy. Identification of tumor-specific factors to modulate inhibitory immunocyte infiltration would provide alternative and novel targets for CRC immunotherapy. Immunoglobulin-like transcript (ILT) 5 is a negative regulator of myeloid cell activation. However, its expression and functional role in solid tumors is still unknown. Using human CRC tissues and cell lines, we found that ILT5 was highly expressed in CRC cells compared with normal colorectal epithelial cells. Enriched ILT5 in tumor cells was correlated with advanced tumor stages and poor patient survival. Our subsequent in vitro and in vivo studies revealed that tumor-derived ILT5 inhibited the infiltration of T cells, especially that of CD8+ T cells in the TME, creating suppressive T-cell contexture. Furthermore, ILT5 directed M2-like polarization of tumor-associated macrophages (TAMs). Inhibition of tumor-derived ILT5 restored the immunosuppressive T-cell and TAM contexture, and restricted CRC progression. Our findings identified ILT5 expression in solid tumor cells for the first time and raised ILT5 as a potential immunotarget and prognostic predictor in CRC.
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Affiliation(s)
- Wenjing Shi
- Jinan Central HospitalShandong UniversityJinanShandongChina
| | - Fang Zhang
- Department of OncologyJinan Central Hospital Affiliated to Shandong First Medical UniversityJinanShandongChina
| | - Xiaozheng Chen
- Shandong Cancer Hospital and InstituteShandong Academy of Medical SciencesShandong First Medical UniversityJinanShandongChina
| | - Shuyun Wang
- Phase I Clinical Research CenterShandong Cancer Hospital and InstituteShandong Academy of Medical SciencesShandong First Medical UniversityJinanShandongChina
| | - Haiqin Zhang
- Department of OncologyJinan Central Hospital Affiliated to Shandong First Medical UniversityJinanShandongChina
| | - Zijiang Yang
- Jinan Central HospitalShandong UniversityJinanShandongChina
| | | | - Yan Zheng
- Research Center of Translational MedicineJinan Central Hospital Affiliated to Shandong First Medical UniversityJinanShandongChina
| | - Yali Han
- Department of Radiation OncologyQilu HospitalCheeloo College of MedicineShandong UniversityJinanChina
| | - Yuping Sun
- Phase I Clinical Research CenterShandong Cancer Hospital and InstituteShandong Academy of Medical SciencesShandong First Medical UniversityJinanShandongChina
| | - Aiqin Gao
- Department of Thoracic Radiation OncologyShandong Cancer Hospital and InstituteShandong Academy of Medical SciencesShandong First Medical UniversityJinanShandongChina
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10
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Fan J, Wang L, Chen M, Zhang J, Li J, Song F, Gu A, Yin D, Yi Y. Analysis of the expression and prognosis for leukocyte immunoglobulin-like receptor subfamily B in human liver cancer. World J Surg Oncol 2022; 20:92. [PMID: 35321724 PMCID: PMC8943947 DOI: 10.1186/s12957-022-02562-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 03/10/2022] [Indexed: 12/24/2022] Open
Abstract
Background Leukocyte immunoglobulin-like receptor subfamily B (LILRB), including 5 subtypes, is a group of inhibitory receptors in the immune system. The LILRB family is known to be involved in the tumor progression of various cancer types, especially liver cancer. However, the expression patterns and prognostic values of LILRB family members in liver cancer tissues remain unclear. Methods We used the Oncomine database, GEPIA database, Kaplan–Meier Plotter, Timer, and TISIDB to assess the expression and prognostic value of the LILRB family in liver cancer patients. We also verified the expression of the LILRB family in tumor tissues and tumor-free liver tissues at the protein level by using immunohistochemistry. The STRING website was used to explore the interaction between the LILRB family and their related genes. The DAVID database was used to perform the gene ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses. Flow cytometry was used to assess the infiltrated NK cells in liver cancer tissues. Results Our study revealed that the mRNA expression of LILRB1, LILRB2, LILRB3, and LILRB5 was downregulated, while compared with normal tissues, the mRNA expression of LILRB4 was upregulated in liver cancer tissues. Survival analysis revealed that LILRB2 and LILRB5 mRNA expression levels were significantly positively associated with overall survival (OS) and disease-free survival (DSS) and that the mRNA expression of all LILRB family members was significantly positively correlated with recurrence-free survival (RFS) and progression-free survival (PFS). Next, we further found that the mRNA expression of all LILRB family members was significantly associated with the infiltration of B cells, CD8+ T cells, CD4+ T cells, macrophages, neutrophils, and dendritic cells in liver cancer. Finally, GO and KEGG analyses found that the LILRB family and its related genes were involved in antigen processing and presentation and natural killer cell-mediated cytotoxicity pathways. Conclusions Our study suggested that LILRB family expression was associated with the prognosis of liver cancer patients and infiltrated immune cells. The LILRB family might be involved in antigen processing and presentation and natural killer cell-mediated cytotoxicity pathways. Supplementary Information The online version contains supplementary material available at 10.1186/s12957-022-02562-w.
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Affiliation(s)
- Jing Fan
- Clinical Research Center, The Second Hospital of Nanjing, Nanjing University of Chinese Medicine, Zhong Fu Road, Gulou District, Nanjing, Jiangsu, People's Republic of China, 210003
| | - Lili Wang
- Clinical Research Center, The Second Hospital of Nanjing, Nanjing University of Chinese Medicine, Zhong Fu Road, Gulou District, Nanjing, Jiangsu, People's Republic of China, 210003
| | - Miao Chen
- Nanjing University of Chinese Medicine, Han Zhong Road, Jianye District, Nanjing, Jiangsu, People's Republic of China, 210029
| | - Jiakang Zhang
- Nanjing University of Chinese Medicine, Han Zhong Road, Jianye District, Nanjing, Jiangsu, People's Republic of China, 210029
| | - Jiayan Li
- Clinical Research Center, The Second Hospital of Nanjing, Nanjing University of Chinese Medicine, Zhong Fu Road, Gulou District, Nanjing, Jiangsu, People's Republic of China, 210003
| | - Fangnan Song
- Department of Hepatobiliary Surgery, The Second Hospital of Nanjing, Nanjing University of Chinese Medicine, Zhong Fu Road, Gulou District, Nanjing, Jiangsu, People's Republic of China, 210003
| | - Aidong Gu
- Department of Hepatobiliary Surgery, The Second Hospital of Nanjing, Nanjing University of Chinese Medicine, Zhong Fu Road, Gulou District, Nanjing, Jiangsu, People's Republic of China, 210003
| | - Dandan Yin
- Clinical Research Center, The Second Hospital of Nanjing, Nanjing University of Chinese Medicine, Zhong Fu Road, Gulou District, Nanjing, Jiangsu, People's Republic of China, 210003
| | - Yongxiang Yi
- Department of Hepatobiliary Surgery, The Second Hospital of Nanjing, Nanjing University of Chinese Medicine, Zhong Fu Road, Gulou District, Nanjing, Jiangsu, People's Republic of China, 210003.
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11
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De Louche CD, Roghanian A. Human inhibitory leukocyte Ig-like receptors: from immunotolerance to immunotherapy. JCI Insight 2022; 7:151553. [PMID: 35076022 PMCID: PMC8855791 DOI: 10.1172/jci.insight.151553] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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12
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Siu LL, Wang D, Hilton J, Geva R, Rasco D, Perets R, Abraham AK, Wilson DC, Markensohn JF, Lunceford J, Suttner L, Siddiqi S, Altura RA, Maurice-Dror C. First-in-Class Anti-immunoglobulin-like Transcript 4 Myeloid-Specific Antibody MK-4830 Abrogates a PD-1 Resistance Mechanism in Patients with Advanced Solid Tumors. Clin Cancer Res 2022; 28:57-70. [PMID: 34598945 PMCID: PMC9401547 DOI: 10.1158/1078-0432.ccr-21-2160] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 08/10/2021] [Accepted: 09/29/2021] [Indexed: 01/07/2023]
Abstract
PURPOSE In this first-in-human study (NCT03564691) in advanced solid tumors, we investigated a novel first-in-class human IgG4 monoclonal antibody targeting the immunoglobulin-like transcript 4 (ILT4) receptor, MK-4830, as monotherapy and in combination with pembrolizumab. PATIENTS AND METHODS Patients with histologically/cytologically confirmed advanced solid tumors, measurable disease by RECIST v1.1, and evaluable baseline tumor sample received escalating doses of intravenous MK-4830 every 3 weeks as monotherapy (parts A and B) and in combination with pembrolizumab (part C). Safety and tolerability were the primary objectives. Pharmacokinetics, objective response rate per RECIST v1.1, and molecular biomarkers were also evaluated. RESULTS Of 84 patients, 50 received monotherapy and 34 received combination therapy. No dose-limiting toxicities were observed; maximum tolerated dose was not reached. MK-4830 showed dose-related target engagement. Eleven of 34 patients in the dose-escalation phase who received combination therapy achieved objective responses; 5 previously had progressive disease on anti-PD-1/PD-L1 therapies. Exploratory evaluation of the association between response and pretreatment gene expression related to interferon-gamma signaling in tumors suggested higher sensitivity to T-cell inflammation with combination therapy than historically expected with pembrolizumab monotherapy, with greater response at more moderate levels of inflammation. CONCLUSIONS This first-in-class MK-4830 antibody dosed as monotherapy and in combination with pembrolizumab was well tolerated with no unexpected toxicities, and demonstrated dose-related evidence of target engagement and antitumor activity. Inflammation intrinsic to the ILT4 mechanism may be facilitated by alleviating the myeloid-suppressive components of the tumor microenvironment, supporting the target of ILT4 as a potential novel immunotherapy in combination with an anti-PD-1/PD-L1 agent.
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Affiliation(s)
- Lillian L. Siu
- Division of Medical Oncology and Hematology, Department of Medicine, Princess Margaret Cancer Center, University of Toronto, Toronto, Ontario, Canada.,Corresponding Author: Lillian L. Siu, Princess Margaret Cancer Center, University of Toronto, 700 University Avenue, Toronto, Ontario, Canada M5G 1Z5. Phone: 416-946-2911; Fax: 416-946-4467; E-mail:
| | - Ding Wang
- Department of Medical Oncology, Henry Ford Cancer Institute, Detroit, Michigan
| | - John Hilton
- Department of Medicine, The Ottawa Hospital and University of Ottawa, Ottawa, Ontario, Canada
| | - Ravit Geva
- Department of Oncology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Drew Rasco
- Department of Clinical Research, START Center for Cancer Care, San Antonio, Texas
| | - Ruth Perets
- Division of Oncology, Clinical Research Institute at Rambam, Rambam Medical Center, Haifa, Israel.,Department of Cancer and Cell Biology, Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - Anson K. Abraham
- Oncology Early Development, Merck & Co., Inc., Kenilworth, New Jersey
| | - Douglas C. Wilson
- Department of Profiling and Expression, Genetics and Pharmacogenomics, Merck & Co., Inc., South San Francisco, California
| | | | - Jared Lunceford
- Oncology Early Development, Merck & Co., Inc., Kenilworth, New Jersey
| | - Leah Suttner
- Oncology Early Development, Merck & Co., Inc., Kenilworth, New Jersey
| | - Shabana Siddiqi
- Oncology Early Development, Merck & Co., Inc., Kenilworth, New Jersey
| | - Rachel A. Altura
- Oncology Early Development, Merck & Co., Inc., Kenilworth, New Jersey
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Yang Z, Gao A, Shi W, Wang J, Zhang X, Xu Z, Xu T, Zheng Y, Sun Y, Yang F. ILT4 in Colorectal Cancer Cells Induces Suppressive T Cell Contexture and Disease Progression. Onco Targets Ther 2021; 14:4239-4254. [PMID: 34321889 PMCID: PMC8312509 DOI: 10.2147/ott.s290348] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Accepted: 06/16/2021] [Indexed: 12/30/2022] Open
Abstract
Purpose Immune checkpoint blockade (ICB) therapy shows little or no clinical benefit in most colorectal cancer (CRC) patients, due to the immunosuppressive T cell contexture in the tumor microenvironment (TME). Immunoglobulin-like transcript (ILT) 4 is an immunosuppressive molecule in myeloid cells. ILT4 is enriched in solid tumor cells, facilitating their proliferation, invasion, and metastasis. However, the regulatory role of ILT4 in T cell immunity of CRC is still undetermined. Here, we aimed to explore how tumor cell-derived ILT4 orchestrates T cell infiltration, subset distribution, and function in CRC. Methods A total of 145 paraffin-embedded cancer tissues and the corresponding clinicopathological information were collected from CRC patients. Immunohistochemical (IHC) staining and public database analyses determined the correlation of ILT4 expression with different T cell subset densities, IFN-γ levels, and patient outcomes. Paired Ig-like receptor B (PIR-B, ILT4 mouse ortholog)-overexpressing/-downregulated MC38 cells were subcutaneously injected into C57BL/6 mice as a CRC transplantation model. The frequencies, subsets, and IFN-γ levels of T cells in mouse blood and spleens were determined using flow cytometry and immunohistochemistry, respectively. Results High ILT4 expression in CRC cells was associated with decreased T cell infiltration, disease progression, and poor patient survival. T cell subset analyses indicated that ILT4-high patients showed reduced CD8+ T cell but elevated FOXP3+ regulatory T (Treg) cell frequencies in the TME. High ILT4 levels predicted lower IFN-γ production by tumor-infiltrating lymphocytes (TILs), especially by CD8+T cells in human CRC tissues. Moreover, PIR-B overexpression accelerated MC38 growth in mice, decreased CD3+/CD8+/IFN-γ+ T cell densities, and elevated Treg infiltration in the TME, blood, and spleens. PIR-B knockdown had the opposite effects. Conclusion ILT4 in CRC cells induced immunosuppressive T cell subset infiltration and impaired IFN-γ production in TILs, suggesting that ILT4 might be a potential immunotherapeutic target and prognostic biomarker.
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Affiliation(s)
- Zijiang Yang
- Department of Oncology, Jinan Central Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250013, People's Republic of China
| | - Aiqin Gao
- Department of Thoracic Radiation Oncology, Shandong Cancer Hospital and Institute, Jinan, Shandong, 250117, People's Republic of China
| | - Wenjing Shi
- Department of Oncology, Jinan Central Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250013, People's Republic of China
| | - Jingnan Wang
- Department of Oncology, Jinan Central Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250013, People's Republic of China
| | - Xianchao Zhang
- Department of Pathology, Jinan Central Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250013, People's Republic of China
| | - Zhengyan Xu
- Department of Pathology, Jinan Central Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250013, People's Republic of China
| | - Tingting Xu
- Department of Pathology, Jinan Central Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250013, People's Republic of China
| | - Yan Zheng
- Research Center of Translational Medicine, Jinan Central Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250013, People's Republic of China
| | - Yuping Sun
- Proton Center, Shandong Cancer Hospital and Institute, Jinan, Shandong, 250117, People's Republic of China
| | - Fei Yang
- Department of Pathology, Jinan Central Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250013, People's Republic of China
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HLA-G/LILRBs: A Cancer Immunotherapy Challenge. Trends Cancer 2021; 7:389-392. [PMID: 33563576 DOI: 10.1016/j.trecan.2021.01.004] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 01/07/2021] [Accepted: 01/12/2021] [Indexed: 11/24/2022]
Abstract
Despite some success, many patients do not benefit from immunotherapy. New strategies to improve clinical efficacy include identification of novel immune-checkpoint (IC) targets or a combination of immunotherapy with antiangiogenic treatments. Here, we propose the therapeutic use of IC, HLA-G/LILRB, and explore its enhanced synergistic antitumor activity when combined with antiangiogenic therapies.
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Chen X, Gao A, Zhang F, Yang Z, Wang S, Fang Y, Li J, Wang J, Shi W, Wang L, Zheng Y, Sun Y. ILT4 inhibition prevents TAM- and dysfunctional T cell-mediated immunosuppression and enhances the efficacy of anti-PD-L1 therapy in NSCLC with EGFR activation. Theranostics 2021; 11:3392-3416. [PMID: 33537094 PMCID: PMC7847666 DOI: 10.7150/thno.52435] [Citation(s) in RCA: 60] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Accepted: 12/24/2020] [Indexed: 12/13/2022] Open
Abstract
Rationale: Immune checkpoint inhibitors (ICIs) against the PD-1/PD-L1 pathway showed limited success in non-small cell lung cancer (NSCLC) patients, especially in those with activating epidermal growth factor receptor (EGFR) mutations. Elucidation of the mechanisms underlying EGFR-mediated tumor immune escape and the development of effective immune therapeutics are urgently needed. Immunoglobulin-like transcript (ILT) 4, a crucial immunosuppressive molecule initially identified in myeloid cells, is enriched in solid tumor cells and promotes the malignant behavior of NSCLC. However, the upstream regulation of ILT4 overexpression and its function in tumor immunity of NSCLC with EGFR activation remains unclear. Methods: ILT4 expression and EGFR phosphorylation in human NSCLC tissues and cell lines were analyzed using immunohistochemistry (IHC), real-time PCR, Western blotting, immunofluorescence, and flow cytometry. The molecular signaling for EGFR-regulated ILT4 expression was investigated using mRNA microarray and The Cancer Genome Atlas (TCGA) database analyses and then confirmed by Western blotting. The regulation of tumor cell proliferation and apoptosis by ILT4 was examined by CCK8 proliferation and apoptosis assays. The impact of ILT4 and PD-L1 on tumor-associated macrophage (TAM) recruitment and polarization was evaluated using Transwell migration assay, flow cytometry, enzyme linked immunosorbent assay (ELISA) and real-time PCR, while their impact on T cell survival and cytotoxicity was analyzed by CFSE proliferation assay, apoptotic assay, flow cytometry, ELISA and cytolytic assay. Tumor immunotherapy models targeting at paired Ig-like receptor B (PIR-B, an ortholog of ILT4 in mouse)/ILT4 and/or PD-L1 were established in C57BL/6 mice inoculated with stable EGFR- overexpressing Lewis lung carcinoma (LLC) cells and in humanized NSG mice inoculated with EGFR mutant, gefitinib-resistant PC9 (PC9-GR) or EGFR-overexpressing wild type H1299 cells. PIR-B and ILT4 inhibition was implemented by infection of specific knockdown lentivirus and PD-L1 was blocked using human/mouse neutralizing antibodies. The tumor growth model was established in NSG mice injected with PIR-B-downregulated LLC cells to evaluate the effect of PIR-B on tumor proliferation. The frequencies and phenotypes of macrophages and T cells in mouse spleens and blood were detected by flow cytometry while those in tumor tissues were determined by IHC and immunofluorescence. Results: We found that ILT4 expression in tumor cells was positively correlated with EGFR phosphorylation in human NSCLC tissues. Using NSCLC cell lines, we demonstrated that ILT4 was upregulated by both tyrosine kinase mutation-induced and epidermal growth factor (EGF)-dependent EGFR activation and subsequent AKT/ERK1/2 phosphorylation. Overexpressed ILT4 in EGFR-activated tumor cells induced TAM recruitment and M2-like polarization, which impaired T cell function. ILT4 also directly inhibited T cell proliferation, cytotoxicity, and IFN-γ expression and secretion. In EGFR-activated cell lines in vitro and in wild-type EGFR-activated C57BL/6 and humanized NSG immunotherapy models in vivo, either ILT4 (PIR-B) or PD-L1 inhibition enhanced anti-tumor immunity and suppressed tumor progression by counteracting TAM- and dysfunctional T cell- induced immuno-suppressive TME; the combined inhibition of both molecules showed the most dramatic tumor retraction. Surprisingly, in EGFR mutant, TKI resistant humanized NSG immunotherapy model, ILT4 inhibition alone rather than in combination with a PD-L1 inhibitor suppressed tumor growth and immune evasion. Conclusions: ILT4 was induced by activation of EGFR-AKT and ERK1/2 signaling in NSCLC cells. Overexpressed ILT4 suppressed tumor immunity by recruiting M2-like TAMs and impairing T cell response, while ILT4 inhibition prevented immunosuppression and tumor promotion. Furthermore, ILT4 inhibition enhanced the efficacy of PD-L1 inhibitor in EGFR wild-type but not in EGFR mutant NSCLC. Our study identified novel mechanisms for EGFR-mediated tumor immune escape, and provided promising immunotherapeutic strategies for patients with EGFR-activated NSCLC.
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Li J, Gao A, Zhang F, Wang S, Wang J, Wang J, Han S, Yang Z, Chen X, Fang Y, Jiang G, Sun Y. ILT3 promotes tumor cell motility and angiogenesis in non-small cell lung cancer. Cancer Lett 2020; 501:263-276. [PMID: 33152402 DOI: 10.1016/j.canlet.2020.10.048] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 10/24/2020] [Accepted: 10/29/2020] [Indexed: 12/13/2022]
Abstract
Immunoglobulin-like transcript (ILT) 3 is an immunosuppressive molecule that negatively regulates myeloid cell activation. ILT3 overexpression in tumor cells induces immune escape of solid tumors and facilitates invasion of monocytic acute myeloid leukemia cells. However, the expression and function of ILT3 in non-small cell lung cancer (NSCLC) cells remain elusive. Herein, we found that ILT3 was enriched in human NSCLC cells, and predicted advanced disease and poor overall survival. ILT3 overexpression enhanced the migration and invasion of NSCLC cells and tubule formation of human umbilical vein endothelial cells by upregulating and interacting with its ligand apolipoprotein E (ApoE) in vitro. Mechanistically, ILT3 recruited SHP2 and SHIP1, and subsequently activated ERK1/2 signaling mediating epithelial-mesenchymal transition (EMT) and increasing vascular endothelial growth factor (VEGF)-A expression in NSCLC cells, which are responsible for tumor cell motility and angiogenesis, respectively. Using murine metastasis models, we further confirmed ILT3 promoted NSCLC metastasis and explored the exact correlation of ILT3 with ApoE, EMT, and VEGF-A in vivo. These results unraveled novel mechanisms for ILT3-induced tumor progression and proposed ILT3 as a potential therapeutic target and prognostic biomarker for NSCLC patients.
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Affiliation(s)
- Juan Li
- Department of Oncology, Jinan Central Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250013, PR China
| | - Aiqin Gao
- Department of Oncology, Jinan Central Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250013, PR China
| | - Fang Zhang
- Department of Oncology, Jinan Central Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250013, PR China
| | - Shuyun Wang
- Department of Oncology, Jinan Central Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250013, PR China
| | - Jingnan Wang
- Department of Oncology, Jinan Central Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250013, PR China
| | - Jing Wang
- Department of Oncology, Jinan Central Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250013, PR China
| | - Shuyi Han
- Medical Research and Laboratory Diagnostic Center, Jinan Central Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250013, PR China
| | - Zijiang Yang
- Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, PR China
| | - Xiaozheng Chen
- Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, PR China
| | - Yuying Fang
- Department of Oncology, Jinan Central Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250013, PR China
| | - Guosheng Jiang
- Department of Immunology, College of Basic Medical, Binzhou Medical University, Yantai, Shandong, 256600, PR China
| | - Yuping Sun
- Department of Oncology, Jinan Central Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250013, PR China; Department of Oncology, Jinan Central Hospital affiliated to Shandong First Medical University, Jinan, Shandong, 250013, PR China.
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