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Gao Y, Feng Y, Liu S, Zhang Y, Wang J, Qin T, Chen P, Li K. Immune-independent acquired resistance to PD-L1 antibody initiated by PD-L1 upregulation via PI3K/AKT signaling can be reversed by anlotinib. Cancer Med 2023; 12:15337-15349. [PMID: 37350549 PMCID: PMC10417303 DOI: 10.1002/cam4.6195] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 04/19/2023] [Accepted: 05/19/2023] [Indexed: 06/24/2023] Open
Abstract
Despite the benefit with cancer immunotherapies in clinical implication, immunotherapeutic resistance occurred in many patients and the mechanism remains unknown. Increasing evidence has revealed that cell-intrinsic programmed cell death ligand 1 (PD-L1) may play a non-negotiable part in immunotherapeutic resistance. Our present study aimed to elucidate the immune-independent acquired resistance mechanism to PD-L1 antibody. We found elevated PD-L1 expression induced by PD-L1 antibodies in cancer cell and vascular endothelial cells (VECs) with substantially acquired resistance to PD-L1 antibodies. Moreover, proliferation of resistant cells was accelerated and the apoptosis was reduced in the absence of immune compared with parental cells. Subsequently, we confirmed that the activation of the PI3K/AKT pathway is involved in the upregulation of PD-L1 expression. Finally, we found that low dose of anlotinib downregulated PD-L1 expression only in VECs via inhibiting the PI3K/AKT pathway; however, the same effect was not observed in cancer cells. To sum up, our findings revealed that upregulation of PD-L1 via activation of the PI3K/AKT signal pathway may promote acquired resistance to PD-L1 antibodies in an immune-independent manner. SIGNIFICANCE: These findings provide new mechanisms of immunotherapeutic resistance and effective evidence of anlotinib combined with immunotherapy.
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Affiliation(s)
- Yuan Gao
- Tianjin Medical University Cancer Institute and HospitalNational Clinical Research Center for CancerTianjinChina
- Key Laboratory of Cancer Prevention and TherapyTianjinChina
- Tianjin's Clinical Research Center for CancerTianjinChina
- Department of Thoracic OncologyTianjin Lung Cancer CenterTianjin Cancer Institute & HospitalTianjin Medical UniversityTianjinChina
| | - Yingfang Feng
- Tianjin Medical University Cancer Institute and HospitalNational Clinical Research Center for CancerTianjinChina
- Key Laboratory of Cancer Prevention and TherapyTianjinChina
- Tianjin's Clinical Research Center for CancerTianjinChina
- Department of Thoracic OncologyTianjin Lung Cancer CenterTianjin Cancer Institute & HospitalTianjin Medical UniversityTianjinChina
| | - Shaochuan Liu
- Tianjin Medical University Cancer Institute and HospitalNational Clinical Research Center for CancerTianjinChina
- Key Laboratory of Cancer Prevention and TherapyTianjinChina
- Tianjin's Clinical Research Center for CancerTianjinChina
- Department of Thoracic OncologyTianjin Lung Cancer CenterTianjin Cancer Institute & HospitalTianjin Medical UniversityTianjinChina
| | - Yan Zhang
- Tianjin Medical University Cancer Institute and HospitalNational Clinical Research Center for CancerTianjinChina
- Key Laboratory of Cancer Prevention and TherapyTianjinChina
- Tianjin's Clinical Research Center for CancerTianjinChina
- Department of Thoracic OncologyTianjin Lung Cancer CenterTianjin Cancer Institute & HospitalTianjin Medical UniversityTianjinChina
| | - Jing Wang
- Tianjin Medical University Cancer Institute and HospitalNational Clinical Research Center for CancerTianjinChina
- Key Laboratory of Cancer Prevention and TherapyTianjinChina
- Tianjin's Clinical Research Center for CancerTianjinChina
- Department of Thoracic OncologyTianjin Lung Cancer CenterTianjin Cancer Institute & HospitalTianjin Medical UniversityTianjinChina
| | - Tingting Qin
- Tianjin Medical University Cancer Institute and HospitalNational Clinical Research Center for CancerTianjinChina
- Key Laboratory of Cancer Prevention and TherapyTianjinChina
- Tianjin's Clinical Research Center for CancerTianjinChina
- Department of Thoracic OncologyTianjin Lung Cancer CenterTianjin Cancer Institute & HospitalTianjin Medical UniversityTianjinChina
| | - Peng Chen
- Tianjin Medical University Cancer Institute and HospitalNational Clinical Research Center for CancerTianjinChina
- Key Laboratory of Cancer Prevention and TherapyTianjinChina
- Tianjin's Clinical Research Center for CancerTianjinChina
- Department of Thoracic OncologyTianjin Lung Cancer CenterTianjin Cancer Institute & HospitalTianjin Medical UniversityTianjinChina
| | - Kai Li
- Tianjin Medical University Cancer Institute and HospitalNational Clinical Research Center for CancerTianjinChina
- Key Laboratory of Cancer Prevention and TherapyTianjinChina
- Tianjin's Clinical Research Center for CancerTianjinChina
- Department of Thoracic OncologyTianjin Lung Cancer CenterTianjin Cancer Institute & HospitalTianjin Medical UniversityTianjinChina
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Liu Z, Qin T, Yuan X, Yang J, Shi W, Zhang X, Jia Y, Liu S, Wang J, Li K. Anlotinib Downregulates RGC32 Which Provoked by Bevacizumab. Front Oncol 2022; 12:875888. [PMID: 35664796 PMCID: PMC9158131 DOI: 10.3389/fonc.2022.875888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Accepted: 04/19/2022] [Indexed: 11/13/2022] Open
Abstract
Background Bevacizumab is the representative drug in antiangiogenic therapy for lung cancer. However, it induced resistance in some neoplasm. Anlotinib, a novel multi-target tyrosine kinase inhibitor which has an inhibitory action on both angiogenesis and malignancy, is possible to reverse the resistance. Methods Transwell migration and invasion experiments of bevacizumab with or without anlotinib were conducted to verify the activated/inhibited ability of lung adenocarcinoma cells. We sequenced A549 cells with enhanced migration and invasion abilities after bevacizumab treatment, screened out the differentially expressed gene and further confirmed by western blot and q-PCR assays. We also investigated immunohistochemical staining of tumor tissue in mice and human lung adenocarcinoma. Results Bevacizumab facilitated migration and invasion of lung adenocarcinoma cells. Differentially expressed gene RGC32 was screened out. Bevacizumab upregulated the expression of RGC32, N-cadherin, and MMP2 through ERK-MAPK and PI3K-AKT pathways. Anlotinib downregulated their expression and reversed the effect of bevacizumab on A549 cells. In vivo experiments confirmed that higher-dose bevacizumab facilitated metastasis in tumor-bearing nude mice and upregulated the expression of RGC32, N-cadherin, and MMP2, whereas anlotinib abrogated its effect. Expression of both RGC32 and N-cadherin positively correlated with lymph node metastasis and stage in lung adenocarcinoma was found. Survival analysis revealed that higher expressions of RGC32 and N-cadherin were associated with poor progression-free survival and overall survival. Conclusions Bevacizumab may promote invasion and metastasis of lung adenocarcinoma cells by upregulating RGC32 through ERK-MAPK and PI3K-AKT pathways to promote epithelial-mesenchymal transition, whereas anlotinib reverses the effect. RGC32 and N-cadherin are independent prognostic factors in lung adenocarcinoma.
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Affiliation(s)
- Zhujun Liu
- National Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China.,Key Laboratory of Cancer Prevention and Therapy, Tianjin, China.,Tianjin's Clinical Research Center for Cancer, Tianjin, China.,Department of Thoracic Oncology, Tianjin Lung Cancer Center, Tianjin Cancer Institute and Hospital, Tianjin Medical University, Tianjin, China
| | - Tingting Qin
- National Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China.,Key Laboratory of Cancer Prevention and Therapy, Tianjin, China.,Tianjin's Clinical Research Center for Cancer, Tianjin, China.,Department of Thoracic Oncology, Tianjin Lung Cancer Center, Tianjin Cancer Institute and Hospital, Tianjin Medical University, Tianjin, China
| | - Xiaohan Yuan
- National Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China.,Key Laboratory of Cancer Prevention and Therapy, Tianjin, China.,Tianjin's Clinical Research Center for Cancer, Tianjin, China.,Department of Thoracic Oncology, Tianjin Lung Cancer Center, Tianjin Cancer Institute and Hospital, Tianjin Medical University, Tianjin, China.,Department of Oncology, The First Affiliated Hospital of Xinxiang Medical University, Xinxiang, China
| | - Jie Yang
- National Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China.,Key Laboratory of Cancer Prevention and Therapy, Tianjin, China.,Tianjin's Clinical Research Center for Cancer, Tianjin, China.,Department of Thoracic Oncology, Tianjin Lung Cancer Center, Tianjin Cancer Institute and Hospital, Tianjin Medical University, Tianjin, China.,Hematology Center, Beijing Key Laboratory of Pediatric Hematology Oncology, Beijing, China.,National Key Discipline of Pediatrics (Capital Medical University), Beijing, China.,Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing, China.,Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China
| | - Wei Shi
- Research and Development Department, Jiangsu Chia-Tai Tian Qing Pharmaceutical Co., Ltd., Nanjing, China
| | - Xiaoling Zhang
- National Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China.,Key Laboratory of Cancer Prevention and Therapy, Tianjin, China.,Tianjin's Clinical Research Center for Cancer, Tianjin, China.,Department of Thoracic Oncology, Tianjin Lung Cancer Center, Tianjin Cancer Institute and Hospital, Tianjin Medical University, Tianjin, China
| | - Yanan Jia
- National Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China.,Key Laboratory of Cancer Prevention and Therapy, Tianjin, China.,Tianjin's Clinical Research Center for Cancer, Tianjin, China.,Department of Thoracic Oncology, Tianjin Lung Cancer Center, Tianjin Cancer Institute and Hospital, Tianjin Medical University, Tianjin, China
| | - Shaochuan Liu
- National Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China.,Key Laboratory of Cancer Prevention and Therapy, Tianjin, China.,Tianjin's Clinical Research Center for Cancer, Tianjin, China.,Department of Thoracic Oncology, Tianjin Lung Cancer Center, Tianjin Cancer Institute and Hospital, Tianjin Medical University, Tianjin, China
| | - Jing Wang
- National Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China.,Key Laboratory of Cancer Prevention and Therapy, Tianjin, China.,Tianjin's Clinical Research Center for Cancer, Tianjin, China.,Department of Thoracic Oncology, Tianjin Lung Cancer Center, Tianjin Cancer Institute and Hospital, Tianjin Medical University, Tianjin, China
| | - Kai Li
- National Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China.,Key Laboratory of Cancer Prevention and Therapy, Tianjin, China.,Tianjin's Clinical Research Center for Cancer, Tianjin, China.,Department of Thoracic Oncology, Tianjin Lung Cancer Center, Tianjin Cancer Institute and Hospital, Tianjin Medical University, Tianjin, China
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3
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Su Y, Luo B, Lu Y, Wang D, Yan J, Zheng J, Xiao J, Wang Y, Xue Z, Yin J, Chen P, Li L, Zhao Q. Anlotinib Induces a T Cell-Inflamed Tumor Microenvironment by Facilitating Vessel Normalization and Enhances the Efficacy of PD-1 Checkpoint Blockade in Neuroblastoma. Clin Cancer Res 2022; 28:793-809. [PMID: 34844980 PMCID: PMC9377760 DOI: 10.1158/1078-0432.ccr-21-2241] [Citation(s) in RCA: 46] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 10/12/2021] [Accepted: 11/22/2021] [Indexed: 01/07/2023]
Abstract
PURPOSE Anlotinib has achieved good results in clinical trials of a variety of cancers. However, the effects of anlotinib on the tumor microenvironment (TME) and systemic immunity have not been reported. There is an urgent need to identify the underlying mechanism to reveal new opportunities for its application in neuroblastoma (NB) and other cancers. Understanding the mechanism will hopefully achieve the goal of using the same method to treat different cancers. EXPERIMENTAL DESIGN This study used bioinformatics, NB syngeneic mouse models, flow cytometry, RNA-seq, and immunofluorescence staining to explore the mechanisms of anlotinib on the TME, and further explored anlotinib-containing combination treatment strategies. RESULTS We proved that anlotinib facilitates tumor vessel normalization at least partially through CD4+ T cells, reprograms the immunosuppressive TME into an immunostimulatory TME, significantly inhibits tumor growth, and effectively prevents systemic immunosuppression. Moreover, the combination of anlotinib with a PD-1 checkpoint inhibitor counteracts the immunosuppression caused by the upregulation of PD-L1 after monotherapy, extends the period of vascular normalization, and finally induces NB regression. CONCLUSIONS To our knowledge, this study is the first to dynamically evaluate the effect of a multitarget antiangiogenic tyrosine kinase inhibitor on the TME. These findings have very important clinical value in guiding the testing of related drugs in NB and other cancers. Based on these findings, we are conducting a phase II clinical study (NCT04842526) on the efficacy and safety of anlotinib, irinotecan, and temozolomide in the treatment of refractory or relapsed NB, and hopefully we will observe patient benefit.
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Affiliation(s)
- Yudong Su
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin, China.,Key Laboratory of Cancer Prevention and Therapy, Tianjin, China.,Tianjin Clinical Research Center for Cancer, Tianjin, China.,Department of Pediatric Oncology, Tianjin Cancer Institute and Hospital, Tianjin Medical University, Tianjin, China
| | - Bingying Luo
- Key Laboratory of Immune Microenvironment and Diseases of Educational Ministry of China, The Province and Ministry Cosponsored Collaborative Innovation Center for Medical Epigenetics, Department of Immunology, Tianjin Medical University, Tianjin, China
| | - Yao Lu
- Key Laboratory of Immune Microenvironment and Diseases of Educational Ministry of China, The Province and Ministry Cosponsored Collaborative Innovation Center for Medical Epigenetics, Department of Immunology, Tianjin Medical University, Tianjin, China
| | - Daowei Wang
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin, China.,Key Laboratory of Cancer Prevention and Therapy, Tianjin, China.,Tianjin Clinical Research Center for Cancer, Tianjin, China.,Department of Pediatric Oncology, Tianjin Cancer Institute and Hospital, Tianjin Medical University, Tianjin, China
| | - Jie Yan
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin, China.,Key Laboratory of Cancer Prevention and Therapy, Tianjin, China.,Tianjin Clinical Research Center for Cancer, Tianjin, China.,Department of Pediatric Oncology, Tianjin Cancer Institute and Hospital, Tianjin Medical University, Tianjin, China
| | - Jian Zheng
- Key Laboratory of Immune Microenvironment and Diseases of Educational Ministry of China, The Province and Ministry Cosponsored Collaborative Innovation Center for Medical Epigenetics, Department of Immunology, Tianjin Medical University, Tianjin, China
| | - Jun Xiao
- Key Laboratory of Immune Microenvironment and Diseases of Educational Ministry of China, The Province and Ministry Cosponsored Collaborative Innovation Center for Medical Epigenetics, Department of Immunology, Tianjin Medical University, Tianjin, China
| | - Yangyang Wang
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin, China.,Key Laboratory of Cancer Prevention and Therapy, Tianjin, China.,Tianjin Clinical Research Center for Cancer, Tianjin, China.,Department of Pediatric Oncology, Tianjin Cancer Institute and Hospital, Tianjin Medical University, Tianjin, China
| | - Zhenyi Xue
- Key Laboratory of Immune Microenvironment and Diseases of Educational Ministry of China, The Province and Ministry Cosponsored Collaborative Innovation Center for Medical Epigenetics, Department of Immunology, Tianjin Medical University, Tianjin, China
| | - Jie Yin
- Key Laboratory of Immune Microenvironment and Diseases of Educational Ministry of China, The Province and Ministry Cosponsored Collaborative Innovation Center for Medical Epigenetics, Department of Immunology, Tianjin Medical University, Tianjin, China
| | - Peng Chen
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin, China.,Key Laboratory of Cancer Prevention and Therapy, Tianjin, China.,Tianjin Clinical Research Center for Cancer, Tianjin, China.,Department of Thoracic Oncology, Tianjin Cancer Institute and Hospital, Tianjin Medical University, Tianjin, China
| | - Long Li
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin, China.,Key Laboratory of Cancer Prevention and Therapy, Tianjin, China.,Tianjin Clinical Research Center for Cancer, Tianjin, China.,Department of Pediatric Oncology, Tianjin Cancer Institute and Hospital, Tianjin Medical University, Tianjin, China.,Key Laboratory of Immune Microenvironment and Diseases of Educational Ministry of China, The Province and Ministry Cosponsored Collaborative Innovation Center for Medical Epigenetics, Department of Immunology, Tianjin Medical University, Tianjin, China.,Corresponding Authors: Qiang Zhao, Department of Pediatric Oncology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin Key Laboratory of Cancer Prevention and Therapy, Tianjin Clinical Research Center for Cancer, Tianjin 300060, China. Phone: 86-22-2334-0123; E-mail: ; and Long Li, Key Laboratory of Immune Microenvironment and Diseases of Educational Ministry of China, The Province and Ministry Cosponsored Collaborative Innovation Center for Medical Epigenetics, Department of Immunology, Tianjin Medical University, Tianjin, 300070, China. Phone: 86-22-2334-0123; E-mail:
| | - Qiang Zhao
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin, China.,Key Laboratory of Cancer Prevention and Therapy, Tianjin, China.,Tianjin Clinical Research Center for Cancer, Tianjin, China.,Department of Pediatric Oncology, Tianjin Cancer Institute and Hospital, Tianjin Medical University, Tianjin, China.,Corresponding Authors: Qiang Zhao, Department of Pediatric Oncology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin Key Laboratory of Cancer Prevention and Therapy, Tianjin Clinical Research Center for Cancer, Tianjin 300060, China. Phone: 86-22-2334-0123; E-mail: ; and Long Li, Key Laboratory of Immune Microenvironment and Diseases of Educational Ministry of China, The Province and Ministry Cosponsored Collaborative Innovation Center for Medical Epigenetics, Department of Immunology, Tianjin Medical University, Tianjin, 300070, China. Phone: 86-22-2334-0123; E-mail:
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Comparison of before versus after intravitreal bevacizumab injection, growth factor levels and fibrotic markers in vitreous samples from patients with proliferative diabetic retinopathy. Graefes Arch Clin Exp Ophthalmol 2022; 260:1899-1906. [PMID: 35028761 DOI: 10.1007/s00417-021-05515-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 11/07/2021] [Accepted: 11/24/2021] [Indexed: 11/04/2022] Open
Abstract
PURPOSE In diabetic retinopathy patients, intravitreal bevacizumab (IVB) injections are widely used to facilitate dissection of retinal fibrovascular membranes during surgery, reduce the rate of perioperative hemorrhage, and prevent recurrent neovascularization. Previous studies have shown that IVB may worsen fibrosis and thereby impair vision. The aim of this study was to determine which markers are associated with fibrosis. METHODS Twenty-three patients with proliferative diabetic retinopathy (PDR) underwent pars plana vitrectomy (PPV) with IVB pretreatment for intraocular hemorrhage (IOH) and/or tractional retinal detachment (TRD). Vitreous samples were obtained at the time of IVB injection and again at the beginning of PPV, about a week later. Using Western blot analysis, the concentrations of vascular endothelial growth factor (VEGF), placental growth factor (PIGF), insulin like growth factor-1 (IGF-1), angiogenin-1 (Ang-1), and vascular endothelial cadherin (VE-cadherin) were measured in vitreous samples. RESULTS After treatment with IVB, VEGF, PIGF, and VE-cadherin concentrations in the vitreous significantly decreased (p < 0.001, p < 0.001, and p = 0.001, respectively), whereas the concentrations of IGF-1 increased (p = 0.001). There were no significant changes in Ang-1 concentrations in the vitreous after IVB injection (p = 0.732). There were no statistically significant differences in VEGF-A, PIGF, VE-cadherin, IGF, and Ang-1 levels before and after IVB injection when the IOH and TRD groups underwent subgroup analysis (p = 0.696, p = 0.516, p = 0.498, p = 0.188, and p = 0.243, respectively). CONCLUSION The levels of VEGF and other cytokines changed in the vitreous after IVB. The adverse effects associated with IVB, such as fibrosis, may result from modulation of vitreous cytokine concentrations. In the treatment of PDR, drugs that optimize the effects of PIGF, IGF-1, and VE-cadherin to reduce these side effects may be useful.
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Zhang X, Zhang Y, Jia Y, Qin T, Zhang C, Li Y, Huang C, Liu Z, Wang J, Li K. Bevacizumab promotes active biological behaviors of human umbilical vein endothelial cells by activating TGFβ1 pathways via off-VEGF signaling. Cancer Biol Med 2021; 17:418-432. [PMID: 32587778 PMCID: PMC7309466 DOI: 10.20892/j.issn.2095-3941.2019.0215] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Accepted: 02/17/2020] [Indexed: 12/12/2022] Open
Abstract
Objective: Bevacizumab is a recombinant humanized monoclonal antibody that blocks vascular endothelial growth factor (VEGF) with clear clinical benefits. However, overall survival of some cancer types remains low owing to resistance to bevacizumab therapy. While resistance is commonly ascribed to tumor cell invasion induced by hypoxia-inducible factor (HIF), less attention has been paid to the potential involvement of endothelial cells (ECs) in vasculature activated by anti-angiogenic drugs. Methods: Human umbilical vein ECs (HUVECs), bEnd.3 cells, and mouse retinal microvascular ECs (MRMECs) were treated with bevacizumab under conditions of hypoxia and effects on biological behaviors, such as migration and tube formation, examined. Regulatory effects on TGFβ1 and CD105 (endoglin) were established via determination of protein and mRNA levels. We further investigated whether the effects of bevacizumab could be reversed using the receptor tyrosine kinase inhibitor anlotinib. Results: Bevacizumab upregulated TGFβ1 as well as CD105, a component of the TGFβ receptor complex and an angiogenesis promoter. Elevated CD105 induced activation of Smad1/5, the inflammatory pathway and endothelial–mesenchymal transition. The migration ability of HUVECs was enhanced by bevacizumab under hypoxia. Upregulation of CD105 was abrogated by anlotinib, which targets multiple receptor tyrosine kinases including VEGFR2/3, FGFR1-4, PDGFRα/β, C-Kit, and RET. Conclusions: Bevacizumab promotes migration and tube formation of HUVECs via activation of the TGFβ1 pathway and upregulation of CD105 expression. Anlotinib reverses the effects of bevacizumab by inhibiting the above signals.
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Affiliation(s)
- Xiaoling Zhang
- Department of Thoracic Oncology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, Tianjin's Clinical Research Center for Cancer, Tianjin 300060, China
| | - Yan Zhang
- Department of Thoracic Oncology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, Tianjin's Clinical Research Center for Cancer, Tianjin 300060, China
| | - Yanan Jia
- Department of Thoracic Oncology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, Tianjin's Clinical Research Center for Cancer, Tianjin 300060, China
| | - Tingting Qin
- Department of Thoracic Oncology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, Tianjin's Clinical Research Center for Cancer, Tianjin 300060, China
| | - Cuicui Zhang
- Department of Thoracic Oncology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, Tianjin's Clinical Research Center for Cancer, Tianjin 300060, China
| | - Yueya Li
- Department of Radiotherapy, Lanzhou University Second Hospital, Lanzhou 100040, China
| | - Chengmou Huang
- Department of Oncology, The First Affiliated Hospital of Hainan Medical University, Haikou 570102, China
| | - Zhujun Liu
- Department of Thoracic Oncology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, Tianjin's Clinical Research Center for Cancer, Tianjin 300060, China
| | - Jing Wang
- Department of Thoracic Oncology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, Tianjin's Clinical Research Center for Cancer, Tianjin 300060, China
| | - Kai Li
- Department of Thoracic Oncology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, Tianjin's Clinical Research Center for Cancer, Tianjin 300060, China
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anlotinib alters tumor immune microenvironment by downregulating PD-L1 expression on vascular endothelial cells. Cell Death Dis 2020; 11:309. [PMID: 32366856 PMCID: PMC7198575 DOI: 10.1038/s41419-020-2511-3] [Citation(s) in RCA: 88] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 04/16/2020] [Accepted: 04/17/2020] [Indexed: 12/17/2022]
Abstract
Aberrant vascular network is a hallmark of cancer. However, the role of vascular endothelial cells (VECs)-expressing PD-L1 in tumor immune microenvironment and antiangiogenic therapy remains unclear. In this study, we used the specimens of cancer patients for immunohistochemical staining to observe the number of PD-L1+ CD34+ VECs and infiltrated immune cells inside tumor specimens. Immunofluorescence staining and flow cytometry were performed to observe the infiltration of CD8+ T cells and FoxP3+ T cells in tumor tissues. Here, we found that PD-L1 expression on VECs determined CD8+ T cells’, FoxP3+ T cells’ infiltration, and the prognosis of patients with lung adenocarcinoma. Anlotinib downregulated PD-L1 expression on VECs through the inactivation of AKT pathway, thereby improving the ratio of CD8/FoxP3 inside tumor and remolding the immune microenvironment. In conclusion, our results demonstrate that PD-L1 high expression on VECs inhibits the infiltration of CD8+ T cells, whereas promotes the aggregation of FoxP3+ T cells into tumor tissues, thus becoming an “immunosuppressive barrier”. Anlotinib can ameliorate the immuno-microenvironment by downregulating PD-L1 expression on VECs to inhibit tumor growth.
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7
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Ge Y, Zhang A, Sun R, Xu J, Yin T, He H, Gou J, Kong J, Zhang Y, Tang X. Penetratin-modified lutein nanoemulsion in-situ gel for the treatment of age-related macular degeneration. Expert Opin Drug Deliv 2020; 17:603-619. [PMID: 32105151 DOI: 10.1080/17425247.2020.1735348] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Background: Lutein is the primary macular pigment with an favorable effect on the treatment of age-related macular degeneration (AMD). However, the poor water solubility of lutein hinders its absorption and delivery. In this study, a penetratin-modified lutein nanoemulsion in-situ gel (GEL) was prepared for the treatment of AMD.Methods: A nanoemulsion (NE) was prepared and modified with penetratin (P-NE) to improve the penetration. The effect of penetratin was evaluated by cell uptake and intraocular distribution assays. A dry AMD model was induced using NaIO3, and the therapeutic effect was evaluated by electroretinography, the number of apoptosis cells and the reactive oxygen species (ROS) level.Results: Lutein showed a good ability to protect ARPE-19 from the damage of H2O2 and the uptake rate of P-NE was significantly higher than NE. In the efficacy experiments, the structure of retina was significantly improved after treatment, the apoptosis rate decreased from 31.98% to 2.05%, and the level of ROS was significantly decreased (p < 0.0001).Conclusions: With the aid of penetratin, lutein could be delivered to the retina effectively. The P-NE GEL could evidently inhibit the apoptosis and ROS, demonstrating that the P-NE GEL has a good application prospect in the treatment of AMD.
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Affiliation(s)
- Ying Ge
- Department of Pharmaceutics, College of Pharmacy, Shenyang Pharmaceutical University, Shenyang, Liaoning, PR China
| | - Anan Zhang
- Department of Pharmaceutics, College of Pharmacy, Shenyang Pharmaceutical University, Shenyang, Liaoning, PR China
| | - Rong Sun
- Department of Pharmaceutics, College of Pharmacy, Shenyang Pharmaceutical University, Shenyang, Liaoning, PR China
| | - Jiawen Xu
- Department of Pharmaceutics, College of Pharmacy, Shenyang Pharmaceutical University, Shenyang, Liaoning, PR China.,Department of Pharmacy, Fuwai Hospital Chinese Academy of Medical Sciences, Shenzhen, PR China
| | - Tian Yin
- School of Functional Food and Wine, Shenyang Pharmaceutical University, Shenyang, Liaoning, PR China
| | - Haibing He
- Department of Pharmaceutics, College of Pharmacy, Shenyang Pharmaceutical University, Shenyang, Liaoning, PR China
| | - Jingxin Gou
- Department of Pharmaceutics, College of Pharmacy, Shenyang Pharmaceutical University, Shenyang, Liaoning, PR China
| | - Jun Kong
- Department of Ophthalmology, The Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning, PR China
| | - Yu Zhang
- Department of Pharmaceutics, College of Pharmacy, Shenyang Pharmaceutical University, Shenyang, Liaoning, PR China
| | - Xing Tang
- Department of Pharmaceutics, College of Pharmacy, Shenyang Pharmaceutical University, Shenyang, Liaoning, PR China
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