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Brito Baleeiro R, Liu P, Chard Dunmall LS, Di Gioia C, Nagano A, Cutmore L, Wang J, Chelala C, Nyambura LW, Walden P, Lemoine N, Wang Y. Personalized neoantigen viro-immunotherapy platform for triple-negative breast cancer. J Immunother Cancer 2023; 11:e007336. [PMID: 37586771 PMCID: PMC10432671 DOI: 10.1136/jitc-2023-007336] [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] [Accepted: 07/21/2023] [Indexed: 08/18/2023] Open
Abstract
BACKGROUND Triple-negative breast cancer (TNBC) corresponds to approximately 20% of all breast tumors, with a high propensity for metastasis and a poor prognosis. Because TNBC displays a high mutational load compared with other breast cancer types, a neoantigen-based immunotherapy strategy could be effective. One major bottleneck in the development of a neoantigen-based vaccine for TNBC is the selection of the best targets, that is, tumor-specific neoantigens which are presented at the surface of tumor cells and capable of eliciting robust immune responses. In this study, we aimed to set up a platform for identification and delivery of immunogenic neoantigens in a vaccine regimen for TNBC using oncolytic vaccinia virus (VV). METHODS We used bioinformatic tools and cell-based assays to identify immunogenic neoantigens in TNBC patients' samples, human and murine cell lines. Immunogenicity of the neoantigens was tested in vitro (human) and ex vivo (murine) in T-cell assays. To assess the efficacy of our regimen, we used a preclinical model of TNBC where we treated tumor-bearing mice with neoantigens together with oncolytic VV and evaluated the effect on induction of neoantigen-specific CD8+T cells, tumor growth and survival. RESULTS We successfully identified immunogenic neoantigens and generated neoantigen-specific CD8+T cells capable of recognizing a human TNBC cell line expressing the mutated gene. Using a preclinical model of TNBC, we showed that our tumor-specific oncolytic VV was able to change the tumor microenvironment, attracting and maintaining mature cross-presenting CD8α+dendritic cells and effector T-cells. Moreover, when delivered in a prime/boost regimen together with oncolytic VV, long peptides encompassing neoantigens were able to induce neoantigen-specific CD8+T cells, slow tumor growth and increase survival. CONCLUSIONS Our study provides a promising approach for the development of neoantigen-based immunotherapies for TNBC. By identifying immunogenic neoantigens and developing a delivery system through tumor-specific oncolytic VV, we have demonstrated that neoantigen-based vaccines could be effective in inducing neoantigen-specific CD8+T cells response with significant impact on tumor growth. Further studies are needed to determine the safety and efficacy of this approach in clinical trials.
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Affiliation(s)
- Renato Brito Baleeiro
- Centre for Cancer Biomarkers and Biotherapeutics, Queen Mary University of London, London, UK
| | - Peng Liu
- Centre for Cancer Biomarkers and Biotherapeutics, Queen Mary University of London, London, UK
| | - Louisa S Chard Dunmall
- Centre for Cancer Biomarkers and Biotherapeutics, Queen Mary University of London, London, UK
| | - Carmela Di Gioia
- Centre for Cancer Biomarkers and Biotherapeutics, Queen Mary University of London, London, UK
| | - Ai Nagano
- Centre for Cancer Biomarkers and Biotherapeutics, Queen Mary University of London, London, UK
| | - Lauren Cutmore
- Centre for Cancer Biomarkers and Biotherapeutics, Queen Mary University of London, London, UK
| | - Jun Wang
- Centre for Cancer Biomarkers and Biotherapeutics, Queen Mary University of London, London, UK
| | - Claude Chelala
- Centre for Cancer Biomarkers and Biotherapeutics, Queen Mary University of London, London, UK
| | - Lydon Wainaina Nyambura
- Department of Dermatology, Venerology and Allergology, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Peter Walden
- Department of Dermatology, Venerology and Allergology, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Nicholas Lemoine
- Centre for Cancer Biomarkers and Biotherapeutics, Queen Mary University of London, London, UK
- Zhengzhou University, Zhengzhou, Henan, China
| | - Yaohe Wang
- Centre for Cancer Biomarkers and Biotherapeutics, Queen Mary University of London, London, UK
- Zhengzhou University, Zhengzhou, Henan, China
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Teng C, Meng X, Hu Y, Mao H, Li H, Yang J, Sun T, Meng S, Zong C. Self-Assembled TLR7/8 Agonist-Mannose Conjugate as An Effective Vaccine Adjuvant for SARS-CoV-2 RBD Trimer. Polymers (Basel) 2022; 14:polym14245466. [PMID: 36559833 PMCID: PMC9785909 DOI: 10.3390/polym14245466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 11/27/2022] [Accepted: 12/01/2022] [Indexed: 12/24/2022] Open
Abstract
Small synthetic TLR7/8-agonists can be used as vaccine adjuvants to enhance cell and humoral-mediated immune responses to specific antigens. Despite their potency, after local injection they can be dispersed to undesired body parts causing high reactogenicity, limiting their clinical applications. Here we describe a vaccination strategy that employs the covalent conjugate of a mannose and TLR7/8 agonist as a vaccine adjuvant to take advantage of mannose binding C-type lectins on dendritic cells to enhance the vaccine's immunogenicity. The mannose-TLR7/8 agonist conjugate can self-assemble into nanoparticles with the hydrophilic mannose on the outside and hydrophobic TLR7/8 agonist inside. Although its ability to stimulate HEK-BlueTM hTLR7/8 cells dropped, it can efficiently stimulate mouse bone marrow-derived dendritic cells as indicated by the up-regulation of CD80 and CD86, and higher cytokine expression levels of TNF-α, IL6, and IL-12p70 than the native TLR7/8 agonist. In vivo, vaccination using the SARS-CoV-2 RBD trimer as the antigen and the conjugate as the adjuvant induced a significantly higher amount of IgG2a. These results suggest that the mannose-TLR7/8-agonist conjugate can be used as an effective vaccine adjuvant.
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Affiliation(s)
- Changcai Teng
- Key Laboratory of Tropical Biological Resources of Ministry of Education, School of Pharmaceutical Sciences, Hainan University, Haikou 570228, China
| | - Xiongyan Meng
- Key Laboratory of Tropical Biological Resources of Ministry of Education, School of Pharmaceutical Sciences, Hainan University, Haikou 570228, China
| | - Yeqin Hu
- MAXVAX Bio-tech Co., Ltd., Chengdu 610200, China
| | - Hongzhao Mao
- Key Laboratory of Tropical Biological Resources of Ministry of Education, School of Pharmaceutical Sciences, Hainan University, Haikou 570228, China
| | - Huiting Li
- Key Laboratory of Tropical Biological Resources of Ministry of Education, School of Pharmaceutical Sciences, Hainan University, Haikou 570228, China
| | - Jing Yang
- Key Laboratory of Tropical Biological Resources of Ministry of Education, School of Pharmaceutical Sciences, Hainan University, Haikou 570228, China
| | - Tiantian Sun
- Key Laboratory of Tropical Biological Resources of Ministry of Education, School of Pharmaceutical Sciences, Hainan University, Haikou 570228, China
| | - Shuai Meng
- Key Laboratory of Tropical Biological Resources of Ministry of Education, School of Pharmaceutical Sciences, Hainan University, Haikou 570228, China
| | - Chengli Zong
- Key Laboratory of Tropical Biological Resources of Ministry of Education, School of Pharmaceutical Sciences, Hainan University, Haikou 570228, China
- Correspondence:
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Huang J, Li Q, Peng Q, Xie Y, Wang W, Pei C, Zhao Y, Liu R, Huang L, Li T, Xie L, Zhang J, Dai L, Chen J, Sun J, Zhang W. Single-cell RNA sequencing reveals heterogeneity and differential expression of decidual tissues during the peripartum period. Cell Prolif 2020; 54:e12967. [PMID: 33300223 PMCID: PMC7848970 DOI: 10.1111/cpr.12967] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 11/10/2020] [Accepted: 11/25/2020] [Indexed: 12/13/2022] Open
Abstract
Objectives The decidua is a tissue that contacts both maternal and foetal components and is pivotal to labour onset due to its location. Due to the heterogeneity of decidual tissue, it is challenging to study its role in the peripartum period. Herein, we analysed the transcriptomes of peripartum decidua at single‐cell resolution. Materials and methods Single‐cell RNA sequencing was performed for 29 231 decidual cells before and after delivery to characterize the transcriptomes. Results Eight major cell types (including endothelial cells, fibroblasts) and subtypes of decidual stromal cells, extravillous trophoblasts and T cells were identified and found to have various functions. Compared with before delivery, the activation of decidual stromal cell, extravillous trophoblast and T‐cell subtypes to different degrees was observed after delivery. Furthermore, the activation involved multiple functions, such as cell proliferation, and several pathways, such as the activator protein 1 pathway. The results of pseudotemporal ordering showed differentiation of decidual stromal cell and extravillous trophoblast subtypes, suggesting inhomogeneity of these subgroups in decidualization (decidual stromal cell) and invasion (extravillous trophoblast). Conclusions The peripartum decidual tissue is heterogeneous. This study revealed changes in the decidua and its components at single‐cell resolution; these findings provide a new perspective for the study of peripartum decidua.
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Affiliation(s)
- Jingrui Huang
- Department of Obstetrics, Xiangya Hospital Central South University, Changsha, China
| | - Qi Li
- Department of Obstetrics and Gynecology, Wuhan Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qiaozhen Peng
- Department of Obstetrics, Xiangya Hospital Central South University, Changsha, China
| | - Yingming Xie
- Department of Obstetrics, Xiangya Hospital Central South University, Changsha, China
| | - Weinan Wang
- Department of Obstetrics, Xiangya Hospital Central South University, Changsha, China
| | - Chenlin Pei
- Department of Obstetrics, Xiangya Hospital Central South University, Changsha, China
| | - Yanhua Zhao
- Department of Obstetrics, Xiangya Hospital Central South University, Changsha, China
| | - Rong Liu
- Department of Obstetrics, Xiangya Hospital Central South University, Changsha, China
| | - Lihui Huang
- Department of Obstetrics and Gynecology, Changsha Hospital for Maternal and Child Health Care, Changsha, China
| | - Tieping Li
- Department of Obstetrics and Gynecology, Changsha Hospital for Maternal and Child Health Care, Changsha, China
| | - Liangqun Xie
- Department of Obstetrics, Xiangya Hospital Central South University, Changsha, China
| | - Jiejie Zhang
- Department of Obstetrics, Xiangya Hospital Central South University, Changsha, China.,Hunan Engineering Research Center of Early Life Development and Disease Prevention, Changsha, China
| | - Lei Dai
- Department of Obstetrics, Xiangya Hospital Central South University, Changsha, China
| | - Jingfei Chen
- Department of Obstetrics, Xiangya Hospital Central South University, Changsha, China
| | - Jingchi Sun
- Department of Obstetrics, Xiangya Hospital Central South University, Changsha, China
| | - Weishe Zhang
- Department of Obstetrics, Xiangya Hospital Central South University, Changsha, China.,Hunan Engineering Research Center of Early Life Development and Disease Prevention, Changsha, China
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