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Kaczmarek M, Poznańska J, Fechner F, Michalska N, Paszkowska S, Napierała A, Mackiewicz A. Cancer Vaccine Therapeutics: Limitations and Effectiveness-A Literature Review. Cells 2023; 12:2159. [PMID: 37681891 PMCID: PMC10486481 DOI: 10.3390/cells12172159] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 08/12/2023] [Accepted: 08/18/2023] [Indexed: 09/09/2023] Open
Abstract
In recent years, there has been a surge of interest in tumor microenvironment-associated cancer vaccine therapies. These innovative treatments aim to activate and enhance the body's natural immune response against cancer cells by utilizing specific antigens present in the tumor microenvironment. The goal is to achieve a complete clinical response, where all measurable cancer cells are either eliminated or greatly reduced in size. With their potential to revolutionize cancer treatment, these therapies represent a promising avenue for researchers and clinicians alike. Despite over 100 years of research, the success of therapeutic cancer vaccines has been variable, particularly in advanced cancer patients, with various limitations, including the heterogeneity of the tumor microenvironment, the presence of immunosuppressive cells, and the potential for tumor escape mechanisms. Additionally, the effectiveness of these therapies may be limited by the variability of the patient's immune system response and the difficulty in identifying appropriate antigens for each patient. Despite these challenges, tumor microenvironment-targeted vaccine cancer therapies have shown promising results in preclinical and clinical studies and have the potential to become a valuable addition to current cancer treatment and "curative" options. While chemotherapeutic and monoclonal antibody treatments remain popular, ongoing research is needed to optimize the design and delivery of these therapies and to identify biomarkers that can predict response and guide patient selection. This comprehensive review explores the mechanisms of cancer vaccines, various delivery methods, and the role of adjuvants in improving treatment outcomes. It also discusses the historical background of cancer vaccine research and examines the current state of major cancer vaccination immunotherapies. Furthermore, the limitations and effectiveness of each vaccine type are analyzed, providing insights into the future of cancer vaccine development.
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Affiliation(s)
- Mariusz Kaczmarek
- Department of Medical Biotechnology, Poznan University of Medical Sciences, 61-866 Poznań, Poland
- Department of Cancer Diagnostics and Immunology, Greater Poland Cancer Center, 61-866 Poznań, Poland
| | - Justyna Poznańska
- Scientific Society of Cancer Immunology, Poznań University of Medical Sciences, 61-866 Poznań, Poland; (J.P.)
| | - Filip Fechner
- Scientific Society of Cancer Immunology, Poznań University of Medical Sciences, 61-866 Poznań, Poland; (J.P.)
| | - Natasza Michalska
- Scientific Society of Cancer Immunology, Poznań University of Medical Sciences, 61-866 Poznań, Poland; (J.P.)
| | - Sara Paszkowska
- Scientific Society of Cancer Immunology, Poznań University of Medical Sciences, 61-866 Poznań, Poland; (J.P.)
| | - Adrianna Napierała
- Scientific Society of Cancer Immunology, Poznań University of Medical Sciences, 61-866 Poznań, Poland; (J.P.)
| | - Andrzej Mackiewicz
- Department of Medical Biotechnology, Poznan University of Medical Sciences, 61-866 Poznań, Poland
- Department of Cancer Diagnostics and Immunology, Greater Poland Cancer Center, 61-866 Poznań, Poland
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2
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Xie Y, Zhu S, Chen L, Liu H, Peng T, Ming Z, Zou Z, Hu X, Luo W, Peng K, Nie Y, Luo T, Ma D, Liu S, Luo Z. An Isoxazoloquinone Derivative Inhibits Tumor Growth by Targeting STAT3 and Triggering Its Ubiquitin-Dependent Degradation. Cancers (Basel) 2023; 15:cancers15092424. [PMID: 37173892 PMCID: PMC10177496 DOI: 10.3390/cancers15092424] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 04/17/2023] [Accepted: 04/18/2023] [Indexed: 05/15/2023] Open
Abstract
BACKGROUND Triple-negative breast cancer (TNBC) is the most aggressive breast cancer subtype, with shorter five-year survival than other breast cancer subtypes, and lacks targeted and hormonal treatment strategies. The signal transducer and activator of transcription 3 (STAT3) signaling is up-regulated in various tumors, including TNBC, and plays a vital role in regulating the expression of multiple proliferation- and apoptosis-related genes. RESULTS By combining the unique structures of the natural compounds STA-21 and Aulosirazole with antitumor activities, we synthesized a class of novel isoxazoloquinone derivatives and showed that one of these compounds, ZSW, binds to the SH2 domain of STAT3, leading to decreased STAT3 expression and activation in TNBC cells. Furthermore, ZSW promotes STAT3 ubiquitination, inhibits the proliferation of TNBC cells in vitro, and attenuates tumor growth with manageable toxicities in vivo. ZSW also decreases the mammosphere formation of breast cancer stem cells (BCSCs) by inhibiting STAT3. CONCLUSIONS We conclude that the novel isoxazoloquinone ZSW may be developed as a cancer therapeutic because it targets STAT3, thereby inhibiting the stemness of cancer cells.
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Affiliation(s)
- Yuanzhu Xie
- Department of Biochemistry and Molecular Biology, Hunan Province Key Laboratory of Basic and Applied Hematology, Hunan Key Laboratory of Animal Models for Human Diseases, School of Life Sciences, Xiangya School of Medicine, Central South University, Changsha 410008, China
| | - Shuaiwen Zhu
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China
| | - Ling Chen
- Department of Biochemistry and Molecular Biology, Hunan Province Key Laboratory of Basic and Applied Hematology, Hunan Key Laboratory of Animal Models for Human Diseases, School of Life Sciences, Xiangya School of Medicine, Central South University, Changsha 410008, China
| | - Hongdou Liu
- Department of Biochemistry and Molecular Biology, Hunan Province Key Laboratory of Basic and Applied Hematology, Hunan Key Laboratory of Animal Models for Human Diseases, School of Life Sciences, Xiangya School of Medicine, Central South University, Changsha 410008, China
| | - Ting Peng
- Department of Biochemistry and Molecular Biology, Hunan Province Key Laboratory of Basic and Applied Hematology, Hunan Key Laboratory of Animal Models for Human Diseases, School of Life Sciences, Xiangya School of Medicine, Central South University, Changsha 410008, China
| | - Zhengnan Ming
- Department of Biochemistry and Molecular Biology, Hunan Province Key Laboratory of Basic and Applied Hematology, Hunan Key Laboratory of Animal Models for Human Diseases, School of Life Sciences, Xiangya School of Medicine, Central South University, Changsha 410008, China
| | - Zizheng Zou
- Department of Biochemistry and Molecular Biology, Hunan Province Key Laboratory of Basic and Applied Hematology, Hunan Key Laboratory of Animal Models for Human Diseases, School of Life Sciences, Xiangya School of Medicine, Central South University, Changsha 410008, China
| | - Xiyuan Hu
- Department of Biochemistry and Molecular Biology, Hunan Province Key Laboratory of Basic and Applied Hematology, Hunan Key Laboratory of Animal Models for Human Diseases, School of Life Sciences, Xiangya School of Medicine, Central South University, Changsha 410008, China
| | - Wensong Luo
- Department of Biochemistry and Molecular Biology, Hunan Province Key Laboratory of Basic and Applied Hematology, Hunan Key Laboratory of Animal Models for Human Diseases, School of Life Sciences, Xiangya School of Medicine, Central South University, Changsha 410008, China
| | - Kunjian Peng
- Department of Biochemistry and Molecular Biology, Hunan Province Key Laboratory of Basic and Applied Hematology, Hunan Key Laboratory of Animal Models for Human Diseases, School of Life Sciences, Xiangya School of Medicine, Central South University, Changsha 410008, China
| | - Yuan Nie
- Department of Biochemistry and Molecular Biology, Hunan Province Key Laboratory of Basic and Applied Hematology, Hunan Key Laboratory of Animal Models for Human Diseases, School of Life Sciences, Xiangya School of Medicine, Central South University, Changsha 410008, China
| | - Tiao Luo
- Hunan Key Laboratory of Oral Health Research, Xiangya Stomatological Hospital, Xiangya School of Stomatology, Central South University, Changsha 410008, China
| | - Dayou Ma
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China
| | - Suyou Liu
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China
| | - Zhiyong Luo
- Department of Biochemistry and Molecular Biology, Hunan Province Key Laboratory of Basic and Applied Hematology, Hunan Key Laboratory of Animal Models for Human Diseases, School of Life Sciences, Xiangya School of Medicine, Central South University, Changsha 410008, China
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3
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Xu Z, Peng B, Liang Q, Chen X, Cai Y, Zeng S, Gao K, Wang X, Yi Q, Gong Z, Yan Y. Construction of a Ferroptosis-Related Nine-lncRNA Signature for Predicting Prognosis and Immune Response in Hepatocellular Carcinoma. Front Immunol 2021; 12:719175. [PMID: 34603293 PMCID: PMC8484522 DOI: 10.3389/fimmu.2021.719175] [Citation(s) in RCA: 100] [Impact Index Per Article: 33.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Accepted: 08/26/2021] [Indexed: 02/05/2023] Open
Abstract
Ferroptosis is an iron-dependent cell death process that plays important regulatory roles in the occurrence and development of cancers, including hepatocellular carcinoma (HCC). Moreover, the molecular events surrounding aberrantly expressed long non-coding RNAs (lncRNAs) that drive HCC initiation and progression have attracted increasing attention. However, research on ferroptosis-related lncRNA prognostic signature in patients with HCC is still lacking. In this study, the association between differentially expressed lncRNAs and ferroptosis-related genes, in 374 HCC and 50 normal hepatic samples obtained from The Cancer Genome Atlas (TCGA), was evaluated using Pearson's test, thereby identifying 24 ferroptosis-related differentially expressed lncRNAs. The least absolute shrinkage and selection operator (LASSO) algorithm and Cox regression model were used to construct and validate a prognostic risk score model from both TCGA training dataset and GEO testing dataset (GSE40144). A nine-lncRNA-based signature (CTD-2033A16.3, CTD-2116N20.1, CTD-2510F5.4, DDX11-AS1, LINC00942, LINC01224, LINC01231, LINC01508, and ZFPM2-AS1) was identified as the ferroptosis-related prognostic model for HCC, independent of multiple clinicopathological parameters. In addition, the HCC patients were divided into high-risk and low-risk groups according to the nine-lncRNA prognostic signature. The gene set enrichment analysis enrichment analysis revealed that the lncRNA-based signature might regulate the HCC immune microenvironment by interfering with tumor necrosis factor α/nuclear factor kappa-B, interleukin 2/signal transducers and activators of transcription 5, and cytokine/cytokine receptor signaling pathways. The infiltrating immune cell subtypes, such as resting memory CD4(+) T cells, follicular helper T cells, regulatory T cells, and M0 macrophages, were all significantly different between the high-risk group and the low-risk group as indicated in Spearman's correlation analysis. Moreover, a substantial increase in the expression of B7H3 immune checkpoint molecule was found in the high-risk group. Our findings provided a promising insight into ferroptosis-related lncRNAs in HCC and a personalized prediction tool for prognosis and immune responses in patients.
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Affiliation(s)
- Zhijie Xu
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, China
| | - Bi Peng
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, China
| | - Qiuju Liang
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Xi Chen
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Yuan Cai
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, China
| | - Shuangshuang Zeng
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Kewa Gao
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, China
| | - Xiang Wang
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Qiaoli Yi
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Zhicheng Gong
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Yuanliang Yan
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
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Kim M, Min YK, Jang J, Park H, Lee S, Lee CH. Single-cell RNA sequencing reveals distinct cellular factors for response to immunotherapy targeting CD73 and PD-1 in colorectal cancer. J Immunother Cancer 2021; 9:jitc-2021-002503. [PMID: 34253638 PMCID: PMC8276303 DOI: 10.1136/jitc-2021-002503] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/14/2021] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Although cancer immunotherapy is one of the most effective advanced-stage cancer therapies, no clinically approved cancer immunotherapies currently exist for colorectal cancer (CRC). Recently, programmed cell death protein 1 (PD-1) blockade has exhibited clinical benefits according to ongoing clinical trials. However, ongoing clinical trials for cancer immunotherapies are focused on PD-1 signaling inhibitors such as pembrolizumab, nivolumab, and atezolizumab. In this study, we focused on revealing the distinct response mechanism for the potent CD73 ectoenzyme selective inhibitor AB680 as a promising drug candidate that functions by blocking tumorigenic ATP/adenosine signaling in comparison to current therapeutics that block PD-1 to assess the value of this drug as a novel immunotherapy for CRC. METHODS To understand the distinct mechanism of AB680 in comparison to that of a neutralizing antibody against murine PD-1 used as a PD-1 blocker, we performed single-cell RNA sequencing of CD45+ tumor-infiltrating lymphocytes from untreated controls (n=3) and from AB680-treated (n=3) and PD-1-blockade-treated murine CRC in vivo models. We also used flow cytometry, Azoxymethane (AOM)/Dextran Sulfate Sodium (DSS) models, and in vitro functional assays to validate our new findings. RESULTS We initially observed that the expressions of Nt5e (a gene for CD73) and Entpd1 (a gene for CD39) affect T cell receptor (TCR) diversity and transcriptional profiles of T cells, thus suggesting their critical roles in T cell exhaustion within tumor. Importantly, PD-1 blockade significantly increased the TCR diversity of Entpd1-negative T cells and Pdcd1-positive T cells. Additionally, we determined that AB680 improved the anticancer functions of immunosuppressed cells such as Treg and exhausted T cells, while the PD-1 blocker quantitatively reduced Malat1high Treg and M2 macrophages. We also verified that PD-1 blockade induced Treg depletion in AOM/DSS CRC in vivo models, and we confirmed that AB680 treatment caused increased activation of CD8+ T cells using an in vitro T cell assay. CONCLUSIONS The intratumoral immunomodulation of CD73 inhibition is distinct from PD-1 inhibition and exhibits potential as a novel anticancer immunotherapy for CRC, possibly through a synergistic effect when combined with PD-1 blocker treatments. This study may contribute to the ongoing development of anticancer immunotherapies targeting refractory CRC.
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Affiliation(s)
- Miok Kim
- Therapeutics & Biotechnology Division, Drug Discovery Platform Research Center, Korea Research Institute of Chemical Technology, Daejeon, Republic of Korea
| | - Yong Ki Min
- Therapeutics & Biotechnology Division, Drug Discovery Platform Research Center, Korea Research Institute of Chemical Technology, Daejeon, Republic of Korea
| | - Jinho Jang
- Department of Biomedical Engineering, Ulsan National Institute of Science and Technology, Ulsan, Republic of Korea.,Korean Genomics Center, UNIST, Ulsan, Republic of Korea
| | - Hyejin Park
- Therapeutics & Biotechnology Division, Drug Discovery Platform Research Center, Korea Research Institute of Chemical Technology, Daejeon, Republic of Korea
| | - Semin Lee
- Department of Biomedical Engineering, Ulsan National Institute of Science and Technology, Ulsan, Republic of Korea .,Korean Genomics Center, UNIST, Ulsan, Republic of Korea
| | - Chang Hoon Lee
- Therapeutics & Biotechnology Division, Drug Discovery Platform Research Center, Korea Research Institute of Chemical Technology, Daejeon, Republic of Korea
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5
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Zhou JG, Liang B, Liu JG, Jin SH, He SS, Frey B, Gu N, Fietkau R, Hecht M, Ma H, Gaipl US. Identification of 15 lncRNAs Signature for Predicting Survival Benefit of Advanced Melanoma Patients Treated with Anti-PD-1 Monotherapy. Cells 2021; 10:cells10050977. [PMID: 33922038 PMCID: PMC8143567 DOI: 10.3390/cells10050977] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 04/14/2021] [Accepted: 04/17/2021] [Indexed: 02/07/2023] Open
Abstract
The blockade of programmed cell death protein 1 (PD-1) as monotherapy has been widely used in melanoma, but to identify melanoma patients with survival benefit from anti-PD-1 monotherapy is still a big challenge. There is an urgent need for prognostic signatures improving the prediction of immunotherapy responses of these patients. We analyzed transcriptomic data of pre-treatment tumor biopsies and clinical profiles in advanced melanoma patients receiving only anti-PD-1 monotherapy (nivolumab or pembrolizumab) from the PRJNA356761 and PRJEB23709 data sets as the training and validation cohort, respectively. Weighted gene co-expression network analysis was used to identify the key module, then least absolute shrinkage and selection operator was conducted to determine prognostic-related long noncoding RNAs (lncRNAs). Subsequently, the differentially expressed genes between different clusters were identified, and their function and pathway annotation were performed. In this investigation, 92 melanoma patients with complete survival information (51 from training cohort and 41 from validation cohort) were included in our analyses. We initiallyidentified the key module (skyblue) by weighted gene co-expression network analysis, and then identified a 15 predictive lncRNAs (AC010904.2, LINC01126, AC012360.1, AC024933.1, AL442128.2, AC022211.4, AC022211.2, AC127496.5, NARF-AS1, AP000919.3, AP005329.2, AC023983.1, AC023983.2, AC139100.1, and AC012615.4) signature in melanoma patients treated with anti-PD-1 monotherapy by least absolute shrinkage and selection operator in the training cohort. These results were then validated in the validation cohort. Finally, enrichment analysis showed that the functions of differentially expressed genes between two consensus clusters were mainly related to the immune process and treatment. In summary, the 15 lncRNAs signature is a novel effective predictor for prognosis in advanced melanoma patients treated with anti-PD-1 monotherapy.
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Affiliation(s)
- Jian-Guo Zhou
- Department of Oncology, The Second Affiliated Hospital of Zunyi Medical University, Zunyi 563000, China; (J.-G.Z.); (S.-S.H.)
- Department of Radiation Oncology, Universitätsklinikum Erlangen, 91054 Erlangen, Germany; (B.F.); (R.F.); (M.H.)
- Comprehensive Cancer Center Erlangen-EMN, 91054 Erlangen, Germany
| | - Bo Liang
- Nanjing University of Chinese Medicine, Nanjing 210029, China;
| | - Jian-Guo Liu
- Special Key Laboratory of Oral Diseases Research, Stomatological Hospital Affiliated to Zunyi Medical University, Zunyi 563000, China; (J.-G.L.); (S.-H.J.)
| | - Su-Han Jin
- Special Key Laboratory of Oral Diseases Research, Stomatological Hospital Affiliated to Zunyi Medical University, Zunyi 563000, China; (J.-G.L.); (S.-H.J.)
| | - Si-Si He
- Department of Oncology, The Second Affiliated Hospital of Zunyi Medical University, Zunyi 563000, China; (J.-G.Z.); (S.-S.H.)
| | - Benjamin Frey
- Department of Radiation Oncology, Universitätsklinikum Erlangen, 91054 Erlangen, Germany; (B.F.); (R.F.); (M.H.)
- Comprehensive Cancer Center Erlangen-EMN, 91054 Erlangen, Germany
| | - Ning Gu
- Nanjing Hospital of Chinese Medicine Affiliated to Nanjing University of Chinese Medicine, Nanjing 210029, China;
| | - Rainer Fietkau
- Department of Radiation Oncology, Universitätsklinikum Erlangen, 91054 Erlangen, Germany; (B.F.); (R.F.); (M.H.)
- Comprehensive Cancer Center Erlangen-EMN, 91054 Erlangen, Germany
| | - Markus Hecht
- Department of Radiation Oncology, Universitätsklinikum Erlangen, 91054 Erlangen, Germany; (B.F.); (R.F.); (M.H.)
- Comprehensive Cancer Center Erlangen-EMN, 91054 Erlangen, Germany
| | - Hu Ma
- Department of Oncology, The Second Affiliated Hospital of Zunyi Medical University, Zunyi 563000, China; (J.-G.Z.); (S.-S.H.)
- Correspondence: (H.M.); (U.S.G.); Tel.: +49-(0)9131-85-44258 (U.S.G.); Fax: +49-(0)9131-85-39335 (U.S.G.)
| | - Udo S. Gaipl
- Department of Radiation Oncology, Universitätsklinikum Erlangen, 91054 Erlangen, Germany; (B.F.); (R.F.); (M.H.)
- Comprehensive Cancer Center Erlangen-EMN, 91054 Erlangen, Germany
- Correspondence: (H.M.); (U.S.G.); Tel.: +49-(0)9131-85-44258 (U.S.G.); Fax: +49-(0)9131-85-39335 (U.S.G.)
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6
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Quaglino E, Cavallo F, Conti L. Cancer stem cell antigens as targets for new combined anti-cancer therapies. Int J Biochem Cell Biol 2020; 129:105861. [PMID: 33031926 DOI: 10.1016/j.biocel.2020.105861] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 09/21/2020] [Accepted: 09/27/2020] [Indexed: 02/06/2023]
Abstract
The introduction of immune checkpoint inhibitors (ICI) has ushered in a new, golden age for cancer immunotherapy. However, their clinical success remains limited in several solid cancer types because of the low intrinsic immunogenicity of tumors and the development of immune escape mechanisms. Cancer stem cells (CSC), a small population of cancer cells that are responsible for tumor onset, metastatic spread and relapse after treatment, play a pivotal role in resistance to ICIs. The development of novel therapies that can target CSCs would thus improve the outcomes of current immunotherapy regimens. In this light, vaccines that target CSCs are a promising strategy. This paper briefly describes the immunologic properties of CSCs and their antigenic profile, and reviews current preclinical and clinical approaches that combine CSC-targeting vaccines with different synergistic therapies for the development of more effective antineoplastic treatments.
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Affiliation(s)
- Elena Quaglino
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
| | - Federica Cavallo
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
| | - Laura Conti
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy.
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Li Y, Wang Z, Lin H, Wang L, Chen X, Liu Q, Zuo Q, Hu J, Wang H, Guo J, Xie L, Tang J, Li Z, Hu L, Xu L, Zhou X, Ye L, Huang Q, Xu L. Bcl6 Preserves the Suppressive Function of Regulatory T Cells During Tumorigenesis. Front Immunol 2020; 11:806. [PMID: 32477338 PMCID: PMC7235360 DOI: 10.3389/fimmu.2020.00806] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 04/08/2020] [Indexed: 12/18/2022] Open
Abstract
During tumorigenesis, tumor infiltrating regulatory T (Treg) cells restrict the function of effector T cells in tumor microenvironment and thereby promoting tumor growth. The anti-tumor activity of effector T cells can be therapeutically unleashed, and is now being exploited for the treatment of various types of human cancers. However, the immune suppressive function of Treg cells remains a major hurdle to broader effectiveness of tumor immunotherapy. In this article, we reported that the deletion of Bcl6 specifically in Treg cells led to stunted tumor growth, which was caused by impaired Treg cell responses. Notably, Bcl6 is essential in maintaining the lineage stability of Treg cells in tumor microenvironment. Meanwhile, we found that the absence of follicular regulatory T (Tfr) cells, which is a result of Bcl6 deletion in Foxp3+ cells, was dispensable for tumor control. Importantly, the increased Bcl6 expression in Treg cells is associated with poor prognosis of human colorectal cancer and lymph node metastasis of skin melanoma. Furthermore, Bcl6 deletion in Treg cells exhibits synergistic effects with immune checkpoint blockade therapy. Collectively, these results indicate that Bcl6 actively participates in regulating Treg cell immune responses during tumorigenesis and can be exploited as a therapeutic target of anti-tumor immunity.
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Affiliation(s)
- Yiding Li
- Institute of Immunology, Third Military Medical University, Chongqing, China
| | - Zhiming Wang
- Institute of Immunology, Third Military Medical University, Chongqing, China
| | - Huayu Lin
- Institute of Immunology, Third Military Medical University, Chongqing, China
| | - Lisha Wang
- Institute of Immunology, Third Military Medical University, Chongqing, China
| | - Xiangyu Chen
- Institute of Immunology, Third Military Medical University, Chongqing, China
| | - Qiao Liu
- Institute of Immunology, Third Military Medical University, Chongqing, China
| | - Qianfei Zuo
- Institute of Immunology, Third Military Medical University, Chongqing, China
| | - Jianjun Hu
- Department of Oncology, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Haoqiang Wang
- Cancer Center, The General Hospital of Southern Theater Command, Guangzhou, China
| | - Junyi Guo
- Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Stomatological Hospital, Sun Yat-sen University, Guangzhou, China
| | - Luoyingzi Xie
- Institute of Immunology, Third Military Medical University, Chongqing, China
| | - Jianfang Tang
- Institute of Immunology, Third Military Medical University, Chongqing, China
| | - Zhirong Li
- Institute of Immunology, Third Military Medical University, Chongqing, China
| | - Li Hu
- Institute of Immunology, Third Military Medical University, Chongqing, China
| | - Litian Xu
- Department of Gastrointestinal Surgery, The Fifth General Hospital of Kunming, Kunming, China
| | - Xinyuan Zhou
- Institute of Immunology, Third Military Medical University, Chongqing, China
| | - Lilin Ye
- Institute of Immunology, Third Military Medical University, Chongqing, China
| | - Qizhao Huang
- Cancer Center, The General Hospital of Western Theater Command, Chengdu, China
| | - Lifan Xu
- Institute of Immunology, Third Military Medical University, Chongqing, China
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