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Lin J, Zou B, Li H, Wang J, Li S, Cao J, Xie D, Wang F. Collagen XVII promotes dormancy of colorectal cancer cells by activating mTORC2 signaling. Cell Signal 2024; 120:111234. [PMID: 38795810 DOI: 10.1016/j.cellsig.2024.111234] [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: 02/09/2024] [Revised: 05/06/2024] [Accepted: 05/22/2024] [Indexed: 05/28/2024]
Abstract
Tumor dormancy is the underpinning for cancer relapse and chemoresistance, leading to massive cancer-related death in colorectal cancer (CRC). However, our comprehension of the mechanisms dictating tumor dormancy and strategies for eliminating dormant tumor cells remains restricted. In this study, we identified that collagen XVII (COL17A1), a hemidesmosomal transmembrane protein, can promote the dormancy of CRC cells. The upregulation of COL17A1 was observed to prolong quiescence periods and diminish drug susceptibility of CRC cells. Mechanistically, COL17A1 acts as a scaffold, enhancing the crosstalk between mTORC2 and Akt, thereby instigating the mTORC2-mediated dormant signaling. Notably, the activation of mTORC2 is contingent upon the intracellular domain of COL17A1, regardless of its ectodomain shedding. Our findings underscore a pivotal role of the COL17A1-mTORC2 axis in CRC dormancy, suggesting that mTORC2-specific inhibitors may hold therapeutic prospects for the eradication of dormant tumor cells.
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Affiliation(s)
- Jinlong Lin
- State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou 510060, PR China
| | - Bingxu Zou
- State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou 510060, PR China
| | - Hongbo Li
- Department of Musculoskeletal Oncology, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - Jing Wang
- Department of Anesthesiology, Sun Yat-sen University Cancer Center, Guangzhou 510060, China
| | - Shuman Li
- Department of Medical Oncology, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou 450008, China
| | - Jinghua Cao
- State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou 510060, PR China
| | - Dan Xie
- State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou 510060, PR China; Department of Pathology, Sun Yat-sen University Cancer Center, Guangzhou 510060, China.
| | - Fengwei Wang
- State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou 510060, PR China.
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2
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Gao Z, Janakiraman H, Xiao Y, Kang SW, Dong J, Choi J, Ogretmen B, Lee HS, Camp ER. Sphingosine-1-Phosphate Inhibition Increases Endoplasmic Reticulum Stress to Enhance Oxaliplatin Sensitivity in Pancreatic Cancer. World J Oncol 2024; 15:169-180. [PMID: 38545484 PMCID: PMC10965266 DOI: 10.14740/wjon1768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 01/19/2024] [Indexed: 05/02/2024] Open
Abstract
Background Pancreatic ductal adenocarcinoma (PDAC) is an aggressive cancer resistant to current therapies, including oxaliplatin (Oxa). Growing evidence supports the ability of cancers to harness sphingolipid metabolism for survival. Sphingosine-1-phosphate (S1P) is an anti-apoptotic, pro-survival mediator that can influence cellular functions such as endoplasmic reticulum (ER) stress. We hypothesize that PDAC drives dysregulated sphingolipid metabolism and that S1P inhibition can enhance ER stress to improve therapeutic response to Oxa in PDAC. Methods RNA sequencing data of sphingolipid mediators from The Cancer Genome Atlas (TCGA) and Genotype-Tissue Expression Project (GTEx) datasets were analyzed. Murine and human PDAC cell lines were treated with small interfering RNA (siRNA) against sphingosine kinase-2 (SPHK2) or ABC294640 (ABC) and incubated with combinations of vehicle control or Oxa. In an orthotopic syngeneic KPC PDAC model, tumors were treated with either vehicle control, Oxa, ABC, or combination therapy. Results RNA sequencing analysis revealed multiple significantly differentially expressed sphingolipid mediators (P < 0.05). In vitro, both siRNA knockdown of SPHK2 and ABC sensitized cells to Oxa therapy (P < 0.05), and induced eukaryotic initiation factor 2α (eIF2α) and protein kinase RNA-like endoplasmic reticulum kinase (PERK) phosphorylation, hallmarks of ER stress. In vitro therapy also increased extracellular high mobility group box 1 (HMGB1) release (P < 0.05), necessary for immunogenic cell death (ICD). In vivo combination therapy increased apoptotic markers as well as the intensity of HMGB1 staining compared to control (P < 0.05). Conclusions Our evidence suggests that sphingolipid metabolism is dysregulated in PDAC. Furthermore, S1P inhibition can sensitize PDAC to Oxa therapy through increasing ER stress and can potentiate ICD induction. This highlights a potential therapeutic target for chemosensitizing PDAC as well as an adjunct for future chemoimmunotherapy strategies.
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Affiliation(s)
- Zachary Gao
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX 77030, USA
| | | | - Yang Xiao
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX 77030, USA
| | - Sung Wook Kang
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX 77030, USA
- Dan L. Duncan Comprehensive Cancer Center, Houston, TX 77030, USA
- Systems Onco-Immunology Laboratory, David J. Sugarbaker Division of Thoracic Surgery, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX 77030, USA
| | - Jiangling Dong
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX 77030, USA
| | - Jasmine Choi
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX 77030, USA
| | - Besim Ogretmen
- Department of Biochemistry and Molecular Biology, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Hyun-Sung Lee
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX 77030, USA
- Dan L. Duncan Comprehensive Cancer Center, Houston, TX 77030, USA
- Systems Onco-Immunology Laboratory, David J. Sugarbaker Division of Thoracic Surgery, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX 77030, USA
| | - Ernest Ramsay Camp
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX 77030, USA
- Dan L. Duncan Comprehensive Cancer Center, Houston, TX 77030, USA
- Michael E. DeBakey VA Medical Center, Houston, TX 77030, USA
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3
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Jin M, Huo D, Sun J, Hu J, Liu S, Zhan M, Zhang BZ, Huang JD. Enhancing immune responses of ESC-based TAA cancer vaccines with a novel OMV delivery system. J Nanobiotechnology 2024; 22:15. [PMID: 38166929 PMCID: PMC10763241 DOI: 10.1186/s12951-023-02273-8] [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: 10/09/2023] [Accepted: 12/14/2023] [Indexed: 01/05/2024] Open
Abstract
Embryonic stem cell (ESC)-derived epitopes can act as therapeutic tumor vaccines against different types of tumors Jin (Adv Healthc Mater 2023). However, these epitopes have poor immunogenicity and stimulate insufficient CD8+ T cell responses, which motivated us to develop a new method to deliver and enhance their effectiveness. Bacterial outer membrane vesicles (OMVs) can serve as immunoadjuvants and act as a delivery vector for tumor antigens. In the current study, we engineered a new OMV platform for the co-delivery of ESC-derived tumor antigens and immune checkpoint inhibitors (PD-L1 antibody). An engineered Staphylococcal Protein A (SpA) was created to non-specifically bind to anti-PD-L1 antibody. SpyCatcher (SpC) and SpA were fused into the cell outer membrane protein OmpA to capture SpyTag-attached peptides and PD-L1 antibody, respectively. The modified OMV was able to efficiently conjugate with ESC-derived TAAs and PD-L1 antibody (SpC-OMVs + SpT-peptides + anti-PD-L1), increasing the residence time of TAAs in the body. The results showed that the combination therapy of ESC-based TAAs and PD-L1 antibody delivered by OMV had significant inhibitory effects in mouse tumor model. Specifically, it was effective in reducing tumor growth by enhancing IFN-γ-CD8+ T cell responses and increasing the number of CD8+ memory cells and antigen-specific T cells. Overall, the new OMV delivery system is a versatile platform that can enhance the immune responses of ESC-based TAA cancer vaccines.
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Affiliation(s)
- Meiling Jin
- Chinese Academy of Sciences (CAS) Key Laboratory of Quantitative Engineering Biology, Shenzhen Institutes of Advanced Technology, Shenzhen Institute of Synthetic Biology, Chinese Academy of Sciences, Shenzhen, China
| | - Da Huo
- Chinese Academy of Sciences (CAS) Key Laboratory of Quantitative Engineering Biology, Shenzhen Institutes of Advanced Technology, Shenzhen Institute of Synthetic Biology, Chinese Academy of Sciences, Shenzhen, China
| | - Jingjing Sun
- Chinese Academy of Sciences (CAS) Key Laboratory of Quantitative Engineering Biology, Shenzhen Institutes of Advanced Technology, Shenzhen Institute of Synthetic Biology, Chinese Academy of Sciences, Shenzhen, China
| | | | - Shuzhen Liu
- Chinese Academy of Sciences (CAS) Key Laboratory of Quantitative Engineering Biology, Shenzhen Institutes of Advanced Technology, Shenzhen Institute of Synthetic Biology, Chinese Academy of Sciences, Shenzhen, China
| | - Mingshuo Zhan
- Chinese Academy of Sciences (CAS) Key Laboratory of Quantitative Engineering Biology, Shenzhen Institutes of Advanced Technology, Shenzhen Institute of Synthetic Biology, Chinese Academy of Sciences, Shenzhen, China
| | - Bao-Zhong Zhang
- Chinese Academy of Sciences (CAS) Key Laboratory of Quantitative Engineering Biology, Shenzhen Institutes of Advanced Technology, Shenzhen Institute of Synthetic Biology, Chinese Academy of Sciences, Shenzhen, China
| | - Jian-Dong Huang
- Chinese Academy of Sciences (CAS) Key Laboratory of Quantitative Engineering Biology, Shenzhen Institutes of Advanced Technology, Shenzhen Institute of Synthetic Biology, Chinese Academy of Sciences, Shenzhen, China.
- School of Biomedical Sciences, Faculty of Medicine, Li Ka Shing, The University of Hong Kong, Pokfulam, Hong Kong SAR, China.
- Department of Clinical Oncology, Shenzhen Key Laboratory for Cancer Metastasis and Personalized Therapy, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China.
- Guangdong-Hong Kong Joint Laboratory for RNA Medicine, Sun Yat-Sen University, Guangzhou, 510120, China.
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Al Zein M, Boukhdoud M, Shammaa H, Mouslem H, El Ayoubi LM, Iratni R, Issa K, Khachab M, Assi HI, Sahebkar A, Eid AH. Immunotherapy and immunoevasion of colorectal cancer. Drug Discov Today 2023; 28:103669. [PMID: 37328052 DOI: 10.1016/j.drudis.2023.103669] [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: 11/17/2022] [Revised: 05/20/2023] [Accepted: 06/08/2023] [Indexed: 06/18/2023]
Abstract
The tremendous success of immunotherapy in clinical trials has led to its establishment as a new pillar of cancer therapy. However, little clinical efficacy has been achieved in microsatellite stable colorectal cancer (MSS-CRC), which constitutes most CRC tumors. Here, we discuss the molecular and genetic heterogeneity of CRC. We review the immune escape mechanisms, and focus on the latest advances in immunotherapy as a treatment modality for CRC. By providing a better understanding of the tumor microenvironment (TME) and the molecular mechanisms underlying immunoevasion, this review offers an insight into developing therapeutic strategies that are effective for patients with various subsets of CRC.
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Affiliation(s)
- Mohammad Al Zein
- Faculty of Medical Sciences, Lebanese University, Hadath, Beirut, Lebanon
| | - Mona Boukhdoud
- Faculty of Medical Sciences, Lebanese University, Hadath, Beirut, Lebanon
| | - Hadi Shammaa
- Faculty of Medical Sciences, Lebanese University, Hadath, Beirut, Lebanon
| | - Hadi Mouslem
- Faculty of Medical Sciences, Lebanese University, Hadath, Beirut, Lebanon
| | | | - Rabah Iratni
- Department of Biology, College of Science, United Arab Emirates University, Al-Ain, UAE
| | - Khodr Issa
- University of Lille, Proteomics, Inflammatory Response, Mass Spectrometry, INSERM U-1192, Lille, France
| | - Maha Khachab
- Faculty of Medicine, University of Balamand, Lebanon
| | - Hazem I Assi
- Faculty of Medicine, American University of Beirut Medical Center, Beirut, Lebanon
| | - Amirhossein Sahebkar
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran; Applied Biomedical Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Ali H Eid
- Department of Basic Medical Sciences, College of Medicine, Qatar University, QU Health, Doha, Qatar.
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Hong JH, Woo IS. Metronomic chemotherapy as a potential partner of immune checkpoint inhibitors for metastatic colorectal cancer treatment. Cancer Lett 2023; 565:216236. [PMID: 37209943 DOI: 10.1016/j.canlet.2023.216236] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 05/09/2023] [Accepted: 05/17/2023] [Indexed: 05/22/2023]
Abstract
The use of immune checkpoint inhibitors (ICIs) in clinical practice for the treatment of metastatic colorectal cancer (mCRC) is currently limited to patients with deficient mismatch repair (dMMR) or high microsatellite instability (MSI-H), which comprise less than 5% of all mCRC cases. Combining ICIs with anti-angiogenic inhibitors, which modulate the tumor microenvironment, may reinforce and synergize the anti-tumor immune responses of ICIs. In mCRCs, combinations of pembrolizumab and lenvatinib have shown good efficacy in early phase trials. These results suggest the potential utility of immune modulators as partners in combination treatment with ICIs in immunologically cold microsatellite stable, as well as hot dMMR/MSI-H tumors. Unlike conventional pulsatile maximum tolerated dose chemotherapy, low-dose metronomic (LDM) chemotherapy recruits immune cells and normalizes vascular-immune crosstalk, similar to anti-angiogenic drugs. LDM chemotherapy mostly modulates the tumor stroma rather than directly killing tumor cells. Here, we review the mechanism of LDM chemotherapy in terms of immune modulation and its potential as a combination partner with ICIs for the treatment of patients with mCRC tumors, most of which are immunologically cold.
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Affiliation(s)
- Ji Hyung Hong
- Division of Medical Oncology, Department of Internal Medicine, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, 03312, Republic of Korea
| | - In Sook Woo
- Division of Medical Oncology, Department of Internal Medicine, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, 07345, Republic of Korea.
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6
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He R, Zhang H, Zhao H, Yin X, Lu J, Gu C, Gao J, Xu Q. Multiomics Analysis Reveals Cuproptosis-Related Signature for Evaluating Prognosis and Immunotherapy Efficacy in Colorectal Cancer. Cancers (Basel) 2023; 15:cancers15020387. [PMID: 36672336 PMCID: PMC9856392 DOI: 10.3390/cancers15020387] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 12/30/2022] [Accepted: 01/04/2023] [Indexed: 01/11/2023] Open
Abstract
Cuproptosis is a copper-induced form of mitochondrial cell death which is engaged in the proliferation and migration of a variety of tumors. Nevertheless, the role of cuproptosis in tumor microenvironment (TME) remodeling and antitumor therapy is still poorly understood. We characterized two diverse cuproptosis-associated molecular isoforms in CRC which exhibit distinct prognostic and TME characteristics. Subsequently, we constructed a cuproptosis-associated prognostic model containing five genes and divided the patients into a high CPS-score group and a low CPS-score group. Univariate and multivariate Cox analyses showed that the CPS score could be used as an independent prognostic factor. The nomogram, and its consequent calibration curves, indicated that this prognostic signature had good predictive power for CRC. The analysis of single-cell sequencing data showed the significant expression of HES4 and SPHK1 in various immune and stromal (including fibroblasts) cells. Further studies showed that tumor mutational burden (TMB), high microsatellite instability (MSI-H) ratio, immune checkpoint blockade (ICB), and human leukocyte antigen (HLA) gene expression all positively correlated with the CPS score, predicting a better reaction to immunotherapy in high CPS-core patients. The CPS score constructed from cuproptosis subtypes can be used as a predictive tool to evaluate the prognosis of CRC patients and their response to immunotherapy.
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Affiliation(s)
| | | | | | | | | | | | | | - Qing Xu
- Correspondence: ; Tel.: +86-13661778856
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7
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Ling Q, Zheng B, Chen X, Ye S, Cheng Q. The employment of vaccinia virus for colorectal cancer treatment: A review of preclinical and clinical studies. Hum Vaccin Immunother 2022; 18:2143698. [PMID: 36369829 DOI: 10.1080/21645515.2022.2143698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Colorectal cancer (CRC) is one of the leading malignancies that causes death worldwide. Cancer vaccines and oncolytic immunotherapy bring new hope for patients with advanced CRC. The capability of vaccinia virus (VV) in carrying foreign genes as antigens or immunostimulatory factors has been demonstrated in animal models. VV of Wyeth, Western Reserve, Lister, Tian Tan, and Copenhagen strains have been engineered for the induction of antitumor response in multiple cancers. This paper summarized the preclinical and clinical application and development of VV serving as cancer vaccines and oncolytic vectors in CRC treatment. Additionally, the remaining challenges and future direction are also discussed.
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Affiliation(s)
- Qiaoyun Ling
- Department of Anorectal Surgery, The Affiliated People's Hospital of Ningbo University, Ningbo, China
| | - Bichun Zheng
- Department of Anorectal Surgery, The Affiliated People's Hospital of Ningbo University, Ningbo, China
| | - Xudong Chen
- Department of Anorectal Surgery, The Affiliated People's Hospital of Ningbo University, Ningbo, China
| | - Shaoshun Ye
- Department of Anorectal Surgery, The Affiliated People's Hospital of Ningbo University, Ningbo, China
| | - Quan Cheng
- Department of Anorectal Surgery, The Affiliated People's Hospital of Ningbo University, Ningbo, China
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8
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Chen L, Cao X, Li J, Liu C, Jiang T. Efficacy and safety of metronomic chemotherapy in maintenance therapy for metastatic colorectal cancer: A systematic review of randomized controlled trials. Medicine (Baltimore) 2022; 101:e31659. [PMID: 36401426 PMCID: PMC9678531 DOI: 10.1097/md.0000000000031659] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Abstract
BACKGROUND The current studies on metronomic chemotherapy in mCRC are all aimed at patients after multi-line therapy failure, and only a few studies have focused on maintenance treatment after successful first-line therapy. METHODS The PubMed, Embase, Cochrane Library, Wanfang, CNKI, and VIP were searched, and the relevant data was extracted, including media progression-free survival (mPFS), media overall survival (mOS), and grade 3/4 adverse events (AEs). RESULTS We included 4 randomized controlled trials (RCTs), 2 RCTs showed that metronomic maintenance chemotherapy could significantly improve mPFS compared to observation group; another RCT showed that metronomic maintenance chemotherapy group did not have low mPFS than the bevacizumab maintenance treatment (MT). The final RCT showed that dual-agent metronomic chemotherapy combined with bevacizumab MT did not improve mPFS compared with bevacizumab MT. The 3 RCTs showed that the metronomic maintenance therapy could not effectively improve mOS in mCRC compared to observation group or bevacizumab MT, while another RCT reported that the mOS in metronomic maintenance chemotherapy group was similar to bevacizumab MT. AEs was mostly mild and manageable. Grade ≥ 3 AEs are mostly nonhematological toxicity, and no deaths related to AEs were reported. CONCLUSION This systematic review indicates that metronomic chemotherapy for mCRC MT can improve mPFS in some patients and is relatively safe. However, improvements in OS in most RCTs are arguable. Therefore, we need further studies to verify its long-term efficacy.
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Affiliation(s)
- Li Chen
- Department of Pharmacy, Wusheng People’s Hospital, Wusheng county, Guangan, Sichuan, China
| | - Xin Cao
- General Practice Department, Clinical Medical College and The First Affiliated Hospital of North Sichuan Medical College, Nanchong, SiChuan, China
| | - Jing Li
- Department of Pharmacy, Clinical Medical College and The First Affiliated Hospital of Chengdu Medical College, Chengdu, SiChuan, China
| | - ChaoMin Liu
- Department of Oncology, Clinical Medical College and The First Affiliated Hospital of Chengdu Medical College, Chengdu, SiChuan, China
- *Correspondence: ChaoMin Liu, Department of Oncology, Clinical Medical College and The First Affiliated Hospital of Chengdu Medical College, 278 Baoguang Street, Xindu District Chengdu 610500, SiChuan, China (e-mail: ); Ting Jiang, Department of Pharmacy, Clinical Medical College and The First Affiliated Hospital of Chengdu Medical College, 278 Baoguang Street, Xindu District Chengdu 610500, SiChuan, China (e-mail: )
| | - Ting Jiang
- Department of Pharmacy, Clinical Medical College and The First Affiliated Hospital of Chengdu Medical College, Chengdu, SiChuan, China
- *Correspondence: ChaoMin Liu, Department of Oncology, Clinical Medical College and The First Affiliated Hospital of Chengdu Medical College, 278 Baoguang Street, Xindu District Chengdu 610500, SiChuan, China (e-mail: ); Ting Jiang, Department of Pharmacy, Clinical Medical College and The First Affiliated Hospital of Chengdu Medical College, 278 Baoguang Street, Xindu District Chengdu 610500, SiChuan, China (e-mail: )
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9
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Shan F, Somasundaram A, Bruno TC, Workman CJ, Vignali DAA. Therapeutic targeting of regulatory T cells in cancer. Trends Cancer 2022; 8:944-961. [PMID: 35853825 PMCID: PMC9588644 DOI: 10.1016/j.trecan.2022.06.008] [Citation(s) in RCA: 61] [Impact Index Per Article: 30.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 06/16/2022] [Accepted: 06/17/2022] [Indexed: 12/24/2022]
Abstract
The success of immunotherapy in oncology underscores the vital role of the immune system in cancer development. Regulatory T cells (Tregs) maintain a fine balance between autoimmunity and immune suppression. They have multiple roles in the tumor microenvironment (TME) but act particularly in suppressing T cell activation. This review focuses on the detrimental and sometimes beneficial roles of Tregs in tumors, our current understanding of recruitment and stabilization of Tregs within the TME, and current Treg-targeted therapeutics. Research identifying subpopulations of Tregs and their respective functions and interactions within the complex networks of the TME will be crucial to develop the next generation of immunotherapies. Through these advances, Treg-targeted immunotherapy could have important implications for the future of oncology.
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Affiliation(s)
- Feng Shan
- Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA; Tumor Microenvironment Center, UPMC Hillman Cancer Center, Pittsburgh, PA 15232, USA
| | - Ashwin Somasundaram
- Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA; Tumor Microenvironment Center, UPMC Hillman Cancer Center, Pittsburgh, PA 15232, USA
| | - Tullia C Bruno
- Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA; Tumor Microenvironment Center, UPMC Hillman Cancer Center, Pittsburgh, PA 15232, USA; Cancer Immunology and Immunotherapy Program, UPMC Hillman Cancer Center, Pittsburgh, PA 15232, USA
| | - Creg J Workman
- Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA; Tumor Microenvironment Center, UPMC Hillman Cancer Center, Pittsburgh, PA 15232, USA
| | - Dario A A Vignali
- Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA; Tumor Microenvironment Center, UPMC Hillman Cancer Center, Pittsburgh, PA 15232, USA; Cancer Immunology and Immunotherapy Program, UPMC Hillman Cancer Center, Pittsburgh, PA 15232, USA.
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10
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Aristin Revilla S, Kranenburg O, Coffer PJ. Colorectal Cancer-Infiltrating Regulatory T Cells: Functional Heterogeneity, Metabolic Adaptation, and Therapeutic Targeting. Front Immunol 2022; 13:903564. [PMID: 35874729 PMCID: PMC9304750 DOI: 10.3389/fimmu.2022.903564] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 06/06/2022] [Indexed: 11/18/2022] Open
Abstract
Colorectal cancer (CRC) is a heterogeneous disease with one of the highest rates of incidence and mortality among cancers worldwide. Understanding the CRC tumor microenvironment (TME) is essential to improve diagnosis and treatment. Within the CRC TME, tumor-infiltrating lymphocytes (TILs) consist of a heterogeneous mixture of adaptive immune cells composed of mainly anti-tumor effector T cells (CD4+ and CD8+ subpopulations), and suppressive regulatory CD4+ T (Treg) cells. The balance between these two populations is critical in anti-tumor immunity. In general, while tumor antigen-specific T cell responses are observed, tumor clearance frequently does not occur. Treg cells are considered to play an important role in tumor immune escape by hampering effective anti-tumor immune responses. Therefore, CRC-tumors with increased numbers of Treg cells have been associated with promoting tumor development, immunotherapy failure, and a poorer prognosis. Enrichment of Treg cells in CRC can have multiple causes including their differentiation, recruitment, and preferential transcriptional and metabolic adaptation to the TME. Targeting tumor-associated Treg cell may be an effective addition to current immunotherapy approaches. Strategies for depleting Treg cells, such as low-dose cyclophosphamide treatment, or targeting one or more checkpoint receptors such as CTLA-4 with PD-1 with monoclonal antibodies, have been explored. These have resulted in activation of anti-tumor immune responses in CRC-patients. Overall, it seems likely that CRC-associated Treg cells play an important role in determining the success of such therapeutic approaches. Here, we review our understanding of the role of Treg cells in CRC, the possible mechanisms that support their homeostasis in the tumor microenvironment, and current approaches for manipulating Treg cells function in cancer.
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Affiliation(s)
- Sonia Aristin Revilla
- Center Molecular Medicine, University Medical Center Utrecht, Utrecht, Netherlands
- Regenerative Medicine Center, University Medical Center Utrecht, Utrecht, Netherlands
- Laboratory Translational Oncology, University Medical Center Utrecht, Utrecht, Netherlands
| | - Onno Kranenburg
- Laboratory Translational Oncology, University Medical Center Utrecht, Utrecht, Netherlands
| | - Paul J. Coffer
- Center Molecular Medicine, University Medical Center Utrecht, Utrecht, Netherlands
- Regenerative Medicine Center, University Medical Center Utrecht, Utrecht, Netherlands
- *Correspondence: Paul J. Coffer,
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Abstract
The nitrogen mustards are powerful cytotoxic and lymphoablative agents and have been used for more than 60 years. They are employed in the treatment of cancers, sarcomas, and hematologic malignancies. Cyclophosphamide, the most versatile of the nitrogen mustards, also has a place in stem cell transplantation and the therapy of autoimmune diseases. Adverse effects caused by the nitrogen mustards on the central nervous system, kidney, heart, bladder, and gonads remain important issues. Advances in analytical techniques have facilitated the investigation of the pharmacokinetics of the nitrogen mustards, especially the oxazaphosphorines, which are prodrugs requiring metabolic activation. Enzymes involved in the metabolism of cyclophosphamide and ifosfamide are very polymorphic, but a greater understanding of the pharmacogenomic influences on their activity has not yet translated into a personalized medicine approach. In addition to damaging DNA, the nitrogen mustards can act through other mechanisms, such as antiangiogenesis and immunomodulation. The immunomodulatory properties of cyclophosphamide are an area of current exploration. In particular, cyclophosphamide decreases the number and activity of regulatory T cells, and the interaction between cyclophosphamide and the intestinal microbiome is now recognized as an important factor. New derivatives of the nitrogen mustards continue to be assessed. Oxazaphosphorine analogs have been synthesized in attempts to both improve efficacy and reduce toxicity, with varying degrees of success. Combinations of the nitrogen mustards with monoclonal antibodies and small-molecule targeted agents are being evaluated. SIGNIFICANCE STATEMENT: The nitrogen mustards are important, well-established therapeutic agents that are used to treat a variety of diseases. Their role is continuing to evolve.
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Affiliation(s)
- Martin S Highley
- Plymouth Oncology Centre, Derriford Hospital, and Peninsula Medical School, University of Plymouth, Plymouth, United Kingdom (M.S.H.); Department of Animal Physiology and Neurobiology (B.L.) and Laboratory for Experimental Oncology (E.A.D.B.), University of Leuven, Leuven, Belgium; Oncology Department, University Hospital Antwerp, Edegem, Belgium (H.P.); and London Oncology Clinic, London, United Kingdom (P.G.H.)
| | - Bart Landuyt
- Plymouth Oncology Centre, Derriford Hospital, and Peninsula Medical School, University of Plymouth, Plymouth, United Kingdom (M.S.H.); Department of Animal Physiology and Neurobiology (B.L.) and Laboratory for Experimental Oncology (E.A.D.B.), University of Leuven, Leuven, Belgium; Oncology Department, University Hospital Antwerp, Edegem, Belgium (H.P.); and London Oncology Clinic, London, United Kingdom (P.G.H.)
| | - Hans Prenen
- Plymouth Oncology Centre, Derriford Hospital, and Peninsula Medical School, University of Plymouth, Plymouth, United Kingdom (M.S.H.); Department of Animal Physiology and Neurobiology (B.L.) and Laboratory for Experimental Oncology (E.A.D.B.), University of Leuven, Leuven, Belgium; Oncology Department, University Hospital Antwerp, Edegem, Belgium (H.P.); and London Oncology Clinic, London, United Kingdom (P.G.H.)
| | - Peter G Harper
- Plymouth Oncology Centre, Derriford Hospital, and Peninsula Medical School, University of Plymouth, Plymouth, United Kingdom (M.S.H.); Department of Animal Physiology and Neurobiology (B.L.) and Laboratory for Experimental Oncology (E.A.D.B.), University of Leuven, Leuven, Belgium; Oncology Department, University Hospital Antwerp, Edegem, Belgium (H.P.); and London Oncology Clinic, London, United Kingdom (P.G.H.)
| | - Ernst A De Bruijn
- Plymouth Oncology Centre, Derriford Hospital, and Peninsula Medical School, University of Plymouth, Plymouth, United Kingdom (M.S.H.); Department of Animal Physiology and Neurobiology (B.L.) and Laboratory for Experimental Oncology (E.A.D.B.), University of Leuven, Leuven, Belgium; Oncology Department, University Hospital Antwerp, Edegem, Belgium (H.P.); and London Oncology Clinic, London, United Kingdom (P.G.H.)
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12
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Tumor-Associated Regulatory T Cells in Non-Small-Cell Lung Cancer: Current Advances and Future Perspectives. J Immunol Res 2022; 2022:4355386. [PMID: 35497874 PMCID: PMC9054468 DOI: 10.1155/2022/4355386] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Revised: 03/27/2022] [Accepted: 03/30/2022] [Indexed: 12/13/2022] Open
Abstract
Non-small-cell lung cancer (NSCLC) is one of the most threatening malignant tumors to human health, with the overall 5-year survival rate being less than 30%. Regulatory T cells (Tregs), a functional subset of T cells, maintain immunologic immunological self-tolerance and homeostasis. Accumulating evidence has uncovered their implicated roles in various cancers in recent years. In NSCLC, they are associated with staging, therapeutic efficacy, and prognosis by infiltrating in tissues and thereby attenuating immunologic anticancer effects in patients. Tumor-associated Tregs display distinct immune signatures in NSCLC compared to thymus-derived Tregs, playing an important role in remodeling the tumor microenvironment (TME). Targeting Tregs has become a novel direction for NSCLC patients, such as disrupting their immune-suppressive functions, blocking their trafficking into tumors, and inhibiting their development and/or activation. This review is aimed at elucidating the molecular mechanisms of tumor-associated Tregs in NSCLC and providing therapeutic targets relevant to Tregs.
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13
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Lynch KT, Squeo GC, Kane WJ, Meneveau MO, Petroni G, Olson WC, Chianese-Bullock KA, Slingluff CL, Foley EF, Friel CM. A pilot trial of vaccination with Carcinoembryonic antigen and Her2/neu peptides in advanced colorectal cancer. Int J Cancer 2022; 150:164-173. [PMID: 34480368 DOI: 10.1002/ijc.33793] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 06/03/2021] [Accepted: 06/23/2021] [Indexed: 12/14/2022]
Abstract
Checkpoint-blockade therapy (CBT) is approved for select colorectal cancer (CRC) patents, but additional immunotherapeutic options are needed. We hypothesized that vaccination with carcinoembryonic antigen (CEA) and Her2/neu (Her2) peptides would be immunogenic and well tolerated by participants with advanced CRC. A pilot clinical trial (NCT00091286) was conducted in HLA-A2+ or -A3+ Stage IIIC-IV CRC patients. Participants were vaccinated weekly with CEA and Her2 peptides plus tetanus peptide and GM-CSF emulsified in Montanide ISA-51 adjuvant for 3 weeks. Adverse events (AEs) were recorded per NIH Common Terminology Criteria for Adverse Events version 3. Immunogenicity was evaluated by interferon-gamma ELISpot assay of in vitro sensitized peripheral blood mononuclear cells and lymphocytes from the sentinel immunized node. Eleven participants were enrolled and treated; one was retrospectively found to be ineligible due to HLA type. All 11 participants were included in AEs and survival analyses, and the 10 eligible participants were evaluated for immunogenicity. All participants reported AEs: 82% were Grade 1-2, most commonly fatigue or injection site reactions. Two participants (18%) experienced treatment-related dose-limiting Grade 3 AEs; both were self-limiting. Immune responses to Her2 or CEA peptides were detected in 70% of participants. Median overall survival (OS) was 16 months; among those enrolled with no evidence of disease (n = 3), median OS was not reached after 10 years of follow-up. These data demonstrate that vaccination with CEA or Her2 peptides is well tolerated and immunogenic. Further study is warranted to assess potential clinical benefits of vaccination in advanced CRC either alone or in combination with CBT.
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Affiliation(s)
- Kevin T Lynch
- Department of Surgery, University of Virginia, Charlottesville, Virginia, USA
| | - Gabriella C Squeo
- Department of Surgery, University of Virginia, Charlottesville, Virginia, USA
| | - William J Kane
- Department of Surgery, University of Virginia, Charlottesville, Virginia, USA
| | - Max O Meneveau
- Department of Surgery, University of Virginia, Charlottesville, Virginia, USA
| | - Gina Petroni
- Department of Public Health Sciences, University of Virginia Cancer Center, Charlottesville, Virginia, USA
| | - Walter C Olson
- Department of Surgery, University of Virginia, Charlottesville, Virginia, USA
| | | | - Craig L Slingluff
- Department of Surgery, University of Virginia, Charlottesville, Virginia, USA
| | - Eugene F Foley
- Department of Surgery, University of Wisconsin, Madison, Wisconsin, USA
| | - Charles M Friel
- Department of Surgery, University of Virginia, Charlottesville, Virginia, USA
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14
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Chen Y, Zheng X, Wu C. The Role of the Tumor Microenvironment and Treatment Strategies in Colorectal Cancer. Front Immunol 2021; 12:792691. [PMID: 34925375 PMCID: PMC8674693 DOI: 10.3389/fimmu.2021.792691] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Accepted: 11/15/2021] [Indexed: 12/17/2022] Open
Abstract
Colorectal cancer (CRC) has the second highest mortality rate among all cancers worldwide. Surgery, chemotherapy, radiotherapy, molecular targeting and other treatment methods have significantly prolonged the survival of patients with CRC. Recently, the emergence of tumor immunotherapy represented by immune checkpoint inhibitors (ICIs) has brought new immunotherapy options for the treatment of advanced CRC. As the efficacy of ICIs is closely related to the tumor immune microenvironment (TME), it is necessary to clarify the relationship between the immune microenvironment of CRC and the efficacy of immunotherapy to ensure that the appropriate drugs are selected. We herein review the latest research progress in the immune microenvironment and strategies related to immunotherapy for CRC. We hope that this review helps in the selection of appropriate treatment strategies for CRC patients.
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Affiliation(s)
- Yaping Chen
- Department of Tumor Biological Treatment, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Xiao Zheng
- Department of Tumor Biological Treatment, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Changping Wu
- Department of Tumor Biological Treatment, The Third Affiliated Hospital of Soochow University, Changzhou, China.,Department of Oncology, The Third Affiliated Hospital of Soochow University, Changzhou, China
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15
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Xu S, Tan H, Yang Q, Wang R, Tian C, Ji Y, Zhao P, Xia Q, Wang F. Fabrication of a Silk Sericin Hydrogel System Delivering Human Lactoferrin Using Genetically Engineered Silk with Improved Bioavailability to Alleviate Chemotherapy-Induced Immunosuppression. ACS APPLIED MATERIALS & INTERFACES 2021; 13:45175-45190. [PMID: 34525798 DOI: 10.1021/acsami.1c08409] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Chemotherapy is one of the main treatments for cancer; however, it usually causes severe atrophy of immune organs and self-immunity damage to patients. Human lactoferrin (hLF) is a multiple biofunctional protein in regulating the immune response and thus holds great promise to alleviate chemotherapy-caused immunosuppression. However, a sufficient hLF resource and efficient delivery of hLF remain a challenge. Here, we provide a useful strategy to simultaneously solve these two problems. A silk sericin hydrogel system delivering recombinant hLF (SSH-rhLF) was fabricated to alleviate the chemotherapeutic drug-caused side effects by rhLF-carrying silk cocoons, which were cost-effectively produced by a transgenic silkworm strain as the resource. SSH-rhLF with a uniform porous microstructural morphology, a dominant β-sheet internal structure, adjustable concentration and sustainable release of the rhLF, and non-cytotoxicity properties was demonstrated. Interestingly, the sericin hydrogel showed effective protection of the rhLF from degradation in the stomach and small intestine, thus prolonging the bioactivity and bioavailability of rhLF. As a result, the oral administration of SSH-rhLF with a low rhLF dose showed significant therapeutic effects on enhancing the immune organs of cyclophosphamide (CTX)-treated mice by protecting the splenic follicles, promoting the expression of immunoregulatory factors, and recovering the intestinal flora family from CTX-induced imbalance, which were similar to those achieved by oral administration of a high dose of free hLF in the solution form. The results suggest that the strategy of producing rhLF silk cocoons via feeding transgenic silkworms overcomes well the shortage of rhLF resources, improves the bioavailability of oral rhLF, and alleviates the side effects of chemotherapeutic drugs on immune organs. The oral SSH-rhLF will be promising for applications in cancer chemotherapy and immunity enhancement of patients.
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Affiliation(s)
- Sheng Xu
- Research Centre for Regenerative Medicine, Guangxi Engineering Center in Biomedical Material for Tissue and Organ Regeneration, Guangxi Medical University, Nanning, Guangxi 530021, PR China
| | - Huanhuan Tan
- State Key Laboratory of Silkworm Genome Biology, Chongqing Engineering and Technology, Research Center for Novel Silk Materials, Biological Science Research Center, Southwest University, Chongqing 400715, PR China
| | - Qianqian Yang
- State Key Laboratory of Silkworm Genome Biology, Chongqing Engineering and Technology, Research Center for Novel Silk Materials, Biological Science Research Center, Southwest University, Chongqing 400715, PR China
| | - Riyuan Wang
- State Key Laboratory of Silkworm Genome Biology, Chongqing Engineering and Technology, Research Center for Novel Silk Materials, Biological Science Research Center, Southwest University, Chongqing 400715, PR China
| | - Chi Tian
- State Key Laboratory of Silkworm Genome Biology, Chongqing Engineering and Technology, Research Center for Novel Silk Materials, Biological Science Research Center, Southwest University, Chongqing 400715, PR China
| | - Yanting Ji
- State Key Laboratory of Silkworm Genome Biology, Chongqing Engineering and Technology, Research Center for Novel Silk Materials, Biological Science Research Center, Southwest University, Chongqing 400715, PR China
| | - Ping Zhao
- State Key Laboratory of Silkworm Genome Biology, Chongqing Engineering and Technology, Research Center for Novel Silk Materials, Biological Science Research Center, Southwest University, Chongqing 400715, PR China
| | - Qingyou Xia
- State Key Laboratory of Silkworm Genome Biology, Chongqing Engineering and Technology, Research Center for Novel Silk Materials, Biological Science Research Center, Southwest University, Chongqing 400715, PR China
| | - Feng Wang
- State Key Laboratory of Silkworm Genome Biology, Chongqing Engineering and Technology, Research Center for Novel Silk Materials, Biological Science Research Center, Southwest University, Chongqing 400715, PR China
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16
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Dai Y, Zhao W, Yue L, Dai X, Rong D, Wu F, Gu J, Qian X. Perspectives on Immunotherapy of Metastatic Colorectal Cancer. Front Oncol 2021; 11:659964. [PMID: 34178645 PMCID: PMC8219967 DOI: 10.3389/fonc.2021.659964] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 05/17/2021] [Indexed: 12/17/2022] Open
Abstract
Colorectal cancer, especially liver metastasis, is still a challenge worldwide. Traditional treatment such as surgery, chemotherapy and radiotherapy have been difficult to be further advanced. We need to develop new treatment methods to further improve the poor prognosis of these patients. The emergence of immunotherapy has brought light to mCRC patients, especially those with dMMR. Based on several large trials, some drugs (pembrolizumab, nivolumab) have been approved by US Food and Drug Administration to treat the patients diagnosed with dMMR tumors. However, immunotherapy has reached a bottleneck for other MSS tumors, with low response rate and poor PFS and OS. Therefore, more clinical trials are underway toward mCRC patients, especially those with MSS. This review is intended to summarize the existing clinical trials to illustrate the development of immunotherapy in mCRC patients, and to provide a new thinking for the direction and experimental design of immunotherapy in the future.
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Affiliation(s)
- Yongjiu Dai
- Hepatobiliary/Liver Transplantation Center, First Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | - Wenhu Zhao
- Hepatobiliary/Liver Transplantation Center, First Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | - Lei Yue
- Hepatobiliary/Liver Transplantation Center, First Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | - Xinzheng Dai
- Hepatobiliary/Liver Transplantation Center, First Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | - Dawei Rong
- Hepatobiliary/Liver Transplantation Center, First Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | - Fan Wu
- Department of General Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Jian Gu
- Hepatobiliary/Liver Transplantation Center, First Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | - Xiaofeng Qian
- Hepatobiliary/Liver Transplantation Center, First Affiliated Hospital, Nanjing Medical University, Nanjing, China
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17
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Abstract
Therapeutic cancer vaccines have undergone a resurgence in the past decade. A better understanding of the breadth of tumour-associated antigens, the native immune response and development of novel technologies for antigen delivery has facilitated improved vaccine design. The goal of therapeutic cancer vaccines is to induce tumour regression, eradicate minimal residual disease, establish lasting antitumour memory and avoid non-specific or adverse reactions. However, tumour-induced immunosuppression and immunoresistance pose significant challenges to achieving this goal. In this Review, we deliberate on how to improve and expand the antigen repertoire for vaccines, consider developments in vaccine platforms and explore antigen-agnostic in situ vaccines. Furthermore, we summarize the reasons for failure of cancer vaccines in the past and provide an overview of various mechanisms of resistance posed by the tumour. Finally, we propose strategies for combining suitable vaccine platforms with novel immunomodulatory approaches and standard-of-care treatments for overcoming tumour resistance and enhancing clinical efficacy.
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Affiliation(s)
- Mansi Saxena
- Vaccine and Cell Therapy Laboratory, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Hematology and Oncology Department, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Sjoerd H van der Burg
- Department of Medical Oncology, Oncode Institute, Leiden University Medical Center, Leiden, Netherlands
| | | | - Nina Bhardwaj
- Vaccine and Cell Therapy Laboratory, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
- Hematology and Oncology Department, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
- Parker Institute of Cancer Immunotherapy, San Francisco, CA, USA.
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18
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Glasner A, Plitas G. Tumor resident regulatory T cells. Semin Immunol 2021; 52:101476. [PMID: 33906820 DOI: 10.1016/j.smim.2021.101476] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 04/08/2021] [Accepted: 04/13/2021] [Indexed: 02/08/2023]
Abstract
The immune system mediates powerful effector mechanisms to protect against a diversity of pathogens and equally as important regulatory functions, to limit collateral damage of inflammation, prevent misguided immune responses to "self", and promote tissue repair. Inadequate regulatory control can lead to a variety of inflammatory disorders including autoimmunity, metabolic syndrome, allergies, and progression of malignancies. Cancers evolve complex mechanisms to thwart immune eradication including coopting normal host regulatory processes. This is most evident in the analysis of tumor infiltrating lymphocytes (TILs), where a preponderance of immunosuppressive immune cells, such as regulatory T (Treg) cells are found. Treg cells express the X-chromosome linked transcription factor Foxp3 and play a crucial role in maintaining immune homeostasis by suppressing inflammatory responses in diverse biological settings. Treg cells in the tumor microenvironment promote tumor development and progression by dampening anti-tumor immune responses, directly supporting the survival of transformed cells through elaboration of growth factors, and interacting with accessory cells in tumors such as fibroblasts and endothelial cells. Current insights into the phenotype and function of tumor associated Treg cells have opened up opportunities for their selective targeting in cancer with the goal of alleviating their suppression of anti-tumor immune responses while maintaining overall immune homeostasis. Here, we review Treg cell biology in the context of the tumor microenvironment (TME), and the important role they play in cancer immunotherapy.
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Affiliation(s)
- Ariella Glasner
- Immunology Program and Ludwig Center for Cancer Immunotherapy, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA
| | - George Plitas
- Immunology Program and Ludwig Center for Cancer Immunotherapy, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA; Breast Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA.
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19
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Lim KP, Zainal NS. Monitoring T Cells Responses Mounted by Therapeutic Cancer Vaccines. Front Mol Biosci 2021; 8:623475. [PMID: 33937323 PMCID: PMC8082312 DOI: 10.3389/fmolb.2021.623475] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 03/24/2021] [Indexed: 02/03/2023] Open
Abstract
With the regulatory approval of Provenge and Talimogene laherparepvec (T-VEC) for the treatment of metastatic prostate cancer and advanced melanoma respectively, and other promising clinical trials outcomes, cancer vaccine is gaining prominence as a cancer therapeutic agent. Cancer vaccine works to induce T cell priming, expansion, and infiltration resulting in antigen-specific cytotoxicity. Such an approach that can drive cytotoxicity within the tumor could complement the success of checkpoint inhibitors as tumors shown to have high immune cell infiltration are those that would respond well to these antibodies. With the advancements in cancer vaccine, methods to monitor and understand how cancer vaccines modify the immune milieu is under rapid development. This includes using ELISpot and intracellular staining to detect cytokine secretion by activated T cells; tetramer and CyTOF to quantitate the level of antigen specific T cells; proliferation and cell killing assay to detect the expansion of T cell and specific killing activity. More recently, T cell profiling has provided unprecedented detail on immune cell subsets and providing clues to the mechanism involved in immune activation. Here, we reviewed cancer vaccines currently in clinical trials and highlight available techniques in monitoring the clinical response in patients.
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Affiliation(s)
- Kue Peng Lim
- Cancer Immunology and Immunotherapy Research Unit, Cancer Research Malaysia, Subang Jaya, Malaysia
| | - Nur Syafinaz Zainal
- Cancer Immunology and Immunotherapy Research Unit, Cancer Research Malaysia, Subang Jaya, Malaysia
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20
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Li L, Miao Q, Meng F, Li B, Xue T, Fang T, Zhang Z, Zhang J, Ye X, Kang Y, Zhang X, Chen Q, Liang X, Chen H, Zhang X. Genetic engineering cellular vesicles expressing CD64 as checkpoint antibody carrier for cancer immunotherapy. Am J Cancer Res 2021; 11:6033-6043. [PMID: 33897897 PMCID: PMC8058713 DOI: 10.7150/thno.48868] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Accepted: 03/18/2021] [Indexed: 02/07/2023] Open
Abstract
Immune checkpoint blockade therapies, especially those targeting the programmed death-1 (PD-1)/programmed death-ligand 1 (PD-L1) have achieved impressive clinical responses in multiple types of cancers. To optimize the therapeutic effect of the checkpoint antibodies, many strategies including targeting delivery, controlled release, and cellular synthesis have been developed. However, within these strategies, antibodies were attached to drug carriers by chemical bonding, which may affect the steric configuration and function of the antibodies. Herein, we prepared cluster of differentiation 64 (CD64), a natural catcher of the fragment crystalline (Fc) of monomeric immunoglobulin G (IgG), and over-expressed it on the cell membrane nanovesicles (NVs) as PD-L1 antibody delivery vehicle (CD64-NVs-aPD-L1), which was employed to disrupt the PD-1/PD-L1 immunosuppressive signal axis for boosting T cell dependent tumor elimination. Meanwhile, chemical immunomodulatory drug cyclophosphamide (CP) was also encapsulated in the vesicle (CD64-NVs-aPD-L1-CP), to simultaneously restrain the regulatory T cells (Tregs) and invigorate Ki67+CD8+ T cells, then further enhance their anti-tumor ability. Methods: The cell membrane NVs overexpressing CD64 were incubated with PD-L1 antibody and chemotherapeutic agent CP to prepare CD64-NVs-aPD-L1-CP. Results: The CD64-NVs-aPD-L1-CP could simultaneously interrupt the immunosuppressive effect of PD-L1 and decrease the inhibition of Tregs, leading to tumor growth suppression and survival time extension. Conclusion: CD64-NVs are charismatic carriers to achieve both checkpoint blockade and immunomodulatory drugs for combined cancer immunotherapy.
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21
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Lumish MA, Cercek A. Immunotherapy for the treatment of colorectal cancer. J Surg Oncol 2021; 123:760-774. [PMID: 33595891 DOI: 10.1002/jso.26357] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 11/18/2020] [Accepted: 11/23/2020] [Indexed: 12/12/2022]
Abstract
Immune checkpoint inhibition (ICI) has transformed the management of metastatic colorectal cancer (mCRC) with mismatch-repair deficiency (dMMR) and microsatellite instability (MSI-H), though this constitutes on average less than 5% of mCRC, and ICI is ineffective in preserved MMR/microsatellite stable disease (pMMR/MSS). Here we review the efficacy of ICI in dMMR/MSI-H mCRC, poor response to ICI in pMMR/MSS mCRC, role for ICI in locally advanced disease, biomarkers of response, novel immunotherapies, and future directions in targeting resistance mechanisms.
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Affiliation(s)
| | - Andrea Cercek
- Memorial Sloan Kettering Cancer Center, New York, New York
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22
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Watanabe N, McKenna MK, Rosewell Shaw A, Suzuki M. Clinical CAR-T Cell and Oncolytic Virotherapy for Cancer Treatment. Mol Ther 2020; 29:505-520. [PMID: 33130314 DOI: 10.1016/j.ymthe.2020.10.023] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 09/30/2020] [Accepted: 10/27/2020] [Indexed: 02/07/2023] Open
Abstract
Immunotherapy has recently garnered success with the induction of clinical responses in tumors, which are traditionally associated with poor outcomes. Chimeric antigen receptor T (CAR-T) cells and oncolytic viruses (OVs) have emerged as promising cancer immunotherapy agents. Herein, we provide an overview of the current clinical status of CAR-T cell and OV therapies. While preclinical studies have demonstrated curative potential, the benefit of CAR-T cells and OVs as single-agent treatments remains limited to a subset of patients. Combinations of different targeted therapies may be required to achieve efficient, durable responses against heterogeneous tumors, as well as the microenvironment. Using a combinatorial approach to take advantage of the unique features of CAR-T cells and OVs with other treatments can produce additive therapeutic effects. This review also discusses ongoing clinical evaluations of these combination strategies for improved outcomes in treatment of resistant malignancies.
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Affiliation(s)
- Norihiro Watanabe
- Department of Medicine, Baylor College of Medicine, Houston, TX 77030, USA; Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital, Houston Methodist Hospital, Houston, TX 77030, USA
| | - Mary Kathryn McKenna
- Department of Medicine, Baylor College of Medicine, Houston, TX 77030, USA; Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital, Houston Methodist Hospital, Houston, TX 77030, USA
| | - Amanda Rosewell Shaw
- Department of Medicine, Baylor College of Medicine, Houston, TX 77030, USA; Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital, Houston Methodist Hospital, Houston, TX 77030, USA
| | - Masataka Suzuki
- Department of Medicine, Baylor College of Medicine, Houston, TX 77030, USA; Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital, Houston Methodist Hospital, Houston, TX 77030, USA.
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23
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Hughes E, Lauder SN, Smart K, Bloom A, Scott J, Jones E, Somerville M, Browne M, Blainey A, Godkin A, Ager A, Gallimore A. Primary breast tumours but not lung metastases induce protective anti-tumour immune responses after Treg-depletion. Cancer Immunol Immunother 2020; 69:2063-2073. [PMID: 32447412 PMCID: PMC7511476 DOI: 10.1007/s00262-020-02603-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Accepted: 05/12/2020] [Indexed: 12/28/2022]
Abstract
Although metastatic disease is responsible for the majority of cancer deaths, tests of novel immunotherapies in mouse tumour models often focus on primary tumours without determining whether these therapies also target metastatic disease. This study examined the impact of depleting Foxp3+ regulatory T cells (Treg), on lung metastases, using a mouse model of breast cancer. After Treg-depletion, generation of an immune response to the primary tumour was a critical determinant for limiting development of metastasis. Indeed, resection of the primary tumour abrogated any effect of Treg-depletion on metastases. In addition, whilst the immune response, generated by the primary tumour, prevented metastases development, it had little impact on controlling established disease. Collectively, the data indicate that metastatic cells in the lung are not controlled by immune responses induced by the primary tumour. These findings indicate that targeting Tregs alone will not suffice for treating lung metastases.
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Affiliation(s)
- Ellyn Hughes
- Division of Infection and Immunity, Cardiff University School of Medicine, SIURI, Cardiff, CF14 4XN, UK
- Cancer Research UK, Manchester Institute Cancer Biomarker Centre, University of Manchester, Alderley Park, Alderley Edge, Macclesfield, SK10 4TG, UK
| | - Sarah N Lauder
- Division of Infection and Immunity, Cardiff University School of Medicine, SIURI, Cardiff, CF14 4XN, UK
| | - Kathryn Smart
- Division of Infection and Immunity, Cardiff University School of Medicine, SIURI, Cardiff, CF14 4XN, UK
| | - Anja Bloom
- Division of Infection and Immunity, Cardiff University School of Medicine, SIURI, Cardiff, CF14 4XN, UK
| | - Jake Scott
- Division of Infection and Immunity, Cardiff University School of Medicine, SIURI, Cardiff, CF14 4XN, UK
| | - Emma Jones
- Division of Infection and Immunity, Cardiff University School of Medicine, SIURI, Cardiff, CF14 4XN, UK
| | - Michelle Somerville
- Division of Infection and Immunity, Cardiff University School of Medicine, SIURI, Cardiff, CF14 4XN, UK
| | - Molly Browne
- Division of Infection and Immunity, Cardiff University School of Medicine, SIURI, Cardiff, CF14 4XN, UK
| | - Andrew Blainey
- Division of Infection and Immunity, Cardiff University School of Medicine, SIURI, Cardiff, CF14 4XN, UK
| | - Andrew Godkin
- Division of Infection and Immunity, Cardiff University School of Medicine, SIURI, Cardiff, CF14 4XN, UK
| | - Ann Ager
- Division of Infection and Immunity, Cardiff University School of Medicine, SIURI, Cardiff, CF14 4XN, UK
| | - Awen Gallimore
- Division of Infection and Immunity, Cardiff University School of Medicine, SIURI, Cardiff, CF14 4XN, UK.
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24
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Lauder SN, Smart K, Kersemans V, Allen D, Scott J, Pires A, Milutinovic S, Somerville M, Smart S, Kinchesh P, Lopez-Guadamillas E, Hughes E, Jones E, Scurr M, Godkin A, Friedman LS, Vanhaesebroeck B, Gallimore A. Enhanced antitumor immunity through sequential targeting of PI3Kδ and LAG3. J Immunother Cancer 2020; 8:e000693. [PMID: 33093155 PMCID: PMC7583804 DOI: 10.1136/jitc-2020-000693] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/13/2020] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Despite striking successes, immunotherapies aimed at increasing cancer-specific T cell responses are unsuccessful in most patients with cancer. Inactivating regulatory T cells (Treg) by inhibiting the PI3Kδ signaling enzyme has shown promise in preclinical models of tumor immunity and is currently being tested in early phase clinical trials in solid tumors. METHODS Mice bearing 4T1 mammary tumors were orally administered a PI3Kδ inhibitor (PI-3065) daily and tumor growth, survival and T cell infiltrate were analyzed in the tumor microenvironment. A second treatment schedule comprised PI3Kδ inhibitor with anti-LAG3 antibodies administered sequentially 10 days later. RESULTS As observed in human immunotherapy trials with other agents, immunomodulation by PI3Kδ-blockade led to 4T1 tumor regressor and non-regressor mice. Tumor infiltrating T cells in regressors were metabolically fitter than those in non-regressors, with significant enrichments of antigen-specific CD8+ T cells, T cell factor 1 (TCF1)+ T cells and CD69- T cells, compatible with induction of a sustained tumor-specific T cell response. Treg numbers were significantly reduced in both regressor and non-regressor tumors compared with untreated tumors. The remaining Treg in non-regressor tumors were however significantly enriched with cells expressing the coinhibitory receptor LAG3, compared with Treg in regressor and untreated tumors. This striking difference prompted us to sequentially block PI3Kδ and LAG3. This combination enabled successful therapy of all mice, demonstrating the functional importance of LAG3 in non-regression of tumors on PI3Kδ inhibition therapy. Follow-up studies, performed using additional cancer cell lines, namely MC38 and CT26, indicated that a partial initial response to PI3Kδ inhibition is an essential prerequisite to a sequential therapeutic benefit of anti-LAG3 antibodies. CONCLUSIONS These data indicate that LAG3 is a key bottleneck to successful PI3Kδ-targeted immunotherapy and provide a rationale for combining PI3Kδ/LAG3 blockade in future clinical studies.
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Affiliation(s)
- Sarah Nicol Lauder
- Infection and Immunity, Cardiff University Department of Medicine, Cardiff, UK
| | - Kathryn Smart
- Infection and Immunity, Cardiff University Department of Medicine, Cardiff, UK
| | | | - Danny Allen
- CRUK/MRC Oxford Institute for Radiation Oncology, Department of Oncology, University of Oxford, Oxford, UK
| | - Jake Scott
- Infection and Immunity, Cardiff University Department of Medicine, Cardiff, UK
| | - Ana Pires
- Infection and Immunity, Cardiff University Department of Medicine, Cardiff, UK
| | - Stefan Milutinovic
- Infection and Immunity, Cardiff University Department of Medicine, Cardiff, UK
| | - Michelle Somerville
- Infection and Immunity, Cardiff University Department of Medicine, Cardiff, UK
| | - Sean Smart
- CRUK/MRC Oxford Institute for Radiation Oncology, Department of Oncology, University of Oxford, Oxford, UK
| | - Paul Kinchesh
- CRUK/MRC Oxford Institute for Radiation Oncology, Department of Oncology, University of Oxford, Oxford, UK
| | | | - Ellyn Hughes
- Cancer Biomarker Group, Cancer Research UK Manchester Institute, The University of Manchester, Manchester, UK
| | - Emma Jones
- Infection and Immunity, Cardiff University Department of Medicine, Cardiff, UK
| | - Martin Scurr
- Infection and Immunity, Cardiff University Department of Medicine, Cardiff, UK
| | - Andrew Godkin
- Infection and Immunity, Cardiff University Department of Medicine, Cardiff, UK
| | | | - Bart Vanhaesebroeck
- UCL Cancer Institute, Paul O'Gorman Building, University College London, London, UK
| | - Awen Gallimore
- Infection and Immunity, Cardiff University Department of Medicine, Cardiff, UK
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25
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Janssen E, Subtil B, de la Jara Ortiz F, Verheul HMW, Tauriello DVF. Combinatorial Immunotherapies for Metastatic Colorectal Cancer. Cancers (Basel) 2020; 12:cancers12071875. [PMID: 32664619 PMCID: PMC7408881 DOI: 10.3390/cancers12071875] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 07/06/2020] [Accepted: 07/09/2020] [Indexed: 12/11/2022] Open
Abstract
Colorectal cancer (CRC) is one of the most frequent and deadly forms of cancer. About half of patients are affected by metastasis, with the cancer spreading to e.g., liver, lungs or the peritoneum. The majority of these patients cannot be cured despite steady advances in treatment options. Immunotherapies are currently not widely applicable for this disease, yet show potential in preclinical models and clinical translation. The tumour microenvironment (TME) has emerged as a key factor in CRC metastasis, including by means of immune evasion-forming a major barrier to effective immuno-oncology. Several approaches are in development that aim to overcome the immunosuppressive environment and boost anti-tumour immunity. Among them are vaccination strategies, cellular transplantation therapies, and targeted treatments. Given the complexity of the system, we argue for rational design of combinatorial therapies and consider the implications of precision medicine in this context.
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Affiliation(s)
- Eline Janssen
- Department of Cell Biology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, PO Box 9101, 6500 HB Nijmegen, The Netherlands; (E.J.); (B.S.); (F.d.l.J.O.)
| | - Beatriz Subtil
- Department of Cell Biology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, PO Box 9101, 6500 HB Nijmegen, The Netherlands; (E.J.); (B.S.); (F.d.l.J.O.)
| | - Fàtima de la Jara Ortiz
- Department of Cell Biology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, PO Box 9101, 6500 HB Nijmegen, The Netherlands; (E.J.); (B.S.); (F.d.l.J.O.)
| | - Henk M. W. Verheul
- Department of Medical Oncology, Radboud University Medical Center, PO Box 9101, 6500 HBNijmegen, The Netherlands;
| | - Daniele V. F. Tauriello
- Department of Cell Biology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, PO Box 9101, 6500 HB Nijmegen, The Netherlands; (E.J.); (B.S.); (F.d.l.J.O.)
- Correspondence:
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26
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Modeling oncolytic virus dynamics in the tumor microenvironment using zebrafish. Cancer Gene Ther 2020; 28:769-784. [PMID: 32647136 DOI: 10.1038/s41417-020-0194-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 06/14/2020] [Accepted: 06/24/2020] [Indexed: 12/14/2022]
Abstract
We have adapted a zebrafish (Danio rerio) tumor xenograft model for use in the study of oncolytic virotherapy. Following implantation of mammalian cancer cells into the perivitelline space of developing zebrafish embryos, both local and intravenous oncolytic virus treatments produce a tumor-specific infection with measurable antitumor effects. Tumor cells are injected at 48 h post fertilization, with oncolytic virus treatment then being administered 24 h later to allow for an initial period of tumor development and angiogenesis. Confocal fluorescent imaging is used to quantify dynamics within the tumor environment. The natural translucency of zebrafish at the embryo stage, coupled with the availability of strains with fluorescent immune and endothelial cell reporter lines, gives the model broad potential to allow for real time, in vivo investigation of important events within tumors throughout the course of virotherapy. Zebrafish xenografts offer a system with biologic fidelity to processes in human cancer development that influence oncolytic virus efficacy, and to our knowledge this is the first demonstration of the model's use in the context of virotherapy. Compared with other models, our protocol offers a powerful, inexpensive approach to evaluating novel oncolytic viruses and oncolytic virus-based combination therapies, with potential application to investigating the impacts of virotherapy on immune response, tumor vasculature, and metastatic disease.
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27
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Scurr MJ, Greenshields-Watson A, Campbell E, Somerville MS, Chen Y, Hulin-Curtis SL, Burnell SEA, Davies JA, Davies MM, Hargest R, Phillips S, Christian AD, Ashelford KE, Andrews R, Parker AL, Stanton RJ, Gallimore A, Godkin A. Cancer Antigen Discovery Is Enabled by RNA Sequencing of Highly Purified Malignant and Nonmalignant Cells. Clin Cancer Res 2020; 26:3360-3370. [PMID: 32122920 DOI: 10.1158/1078-0432.ccr-19-3087] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 01/22/2020] [Accepted: 02/26/2020] [Indexed: 11/16/2022]
Abstract
PURPOSE Broadly expressed, highly differentiated tumor-associated antigens (TAA) can elicit antitumor immunity. However, vaccines targeting TAAs have demonstrated disappointing clinical results, reflecting poor antigen selection and/or immunosuppressive mechanisms. EXPERIMENTAL DESIGN Here, a panel of widely expressed, novel colorectal TAAs were identified by performing RNA sequencing of highly purified colorectal tumor cells in comparison with patient-matched colonic epithelial cells; tumor cell purification was essential to reveal these genes. Candidate TAA protein expression was confirmed by IHC, and preexisting T-cell immunogenicity toward these antigens tested. RESULTS The most promising candidate for further development is DNAJB7 [DnaJ heat shock protein family (Hsp40) member B7], identified here as a novel cancer-testis antigen. It is expressed in many tumors and is strongly immunogenic in patients with cancers originating from a variety of sites. DNAJB7-specific T cells were capable of killing colorectal tumor lines in vitro, and the IFNγ+ response was markedly magnified by control of immunosuppression with cyclophosphamide in patients with cancer. CONCLUSIONS This study highlights how prior methods that sequence whole tumor fractions (i.e., inclusive of alive/dead stromal cells) for antigen identification may have limitations. Through tumor cell purification and sequencing, novel candidate TAAs have been identified for future immunotherapeutic targeting.
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Affiliation(s)
- Martin J Scurr
- Division of Infection and Immunity, Henry Wellcome Building, Cardiff University, Cardiff, United Kingdom
| | - Alex Greenshields-Watson
- Division of Infection and Immunity, Henry Wellcome Building, Cardiff University, Cardiff, United Kingdom
| | - Emma Campbell
- Division of Infection and Immunity, Henry Wellcome Building, Cardiff University, Cardiff, United Kingdom
| | - Michelle S Somerville
- Division of Infection and Immunity, Henry Wellcome Building, Cardiff University, Cardiff, United Kingdom
| | - Yuan Chen
- Division of Infection and Immunity, Henry Wellcome Building, Cardiff University, Cardiff, United Kingdom
| | - Sarah L Hulin-Curtis
- Division of Infection and Immunity, Henry Wellcome Building, Cardiff University, Cardiff, United Kingdom
| | - Stephanie E A Burnell
- Division of Infection and Immunity, Henry Wellcome Building, Cardiff University, Cardiff, United Kingdom
| | - James A Davies
- Division of Cancer and Genetics, Sir Geraint Evans Building, Cardiff University, Cardiff, United Kingdom
| | - Michael M Davies
- Department of Colorectal Surgery, University Hospital of Wales, Heath Park, Cardiff, United Kingdom
| | - Rachel Hargest
- Department of Colorectal Surgery, University Hospital of Wales, Heath Park, Cardiff, United Kingdom
| | - Simon Phillips
- Department of Colorectal Surgery, University Hospital of Wales, Heath Park, Cardiff, United Kingdom
| | - Adam D Christian
- Department of Histopathology, University Hospital of Wales, Heath Park, Cardiff, United Kingdom
| | - Kevin E Ashelford
- Division of Cancer and Genetics, Sir Geraint Evans Building, Cardiff University, Cardiff, United Kingdom
| | - Robert Andrews
- Division of Infection and Immunity, Henry Wellcome Building, Cardiff University, Cardiff, United Kingdom
| | - Alan L Parker
- Division of Cancer and Genetics, Sir Geraint Evans Building, Cardiff University, Cardiff, United Kingdom
| | - Richard J Stanton
- Division of Infection and Immunity, Henry Wellcome Building, Cardiff University, Cardiff, United Kingdom
| | - Awen Gallimore
- Division of Infection and Immunity, Henry Wellcome Building, Cardiff University, Cardiff, United Kingdom.
| | - Andrew Godkin
- Division of Infection and Immunity, Henry Wellcome Building, Cardiff University, Cardiff, United Kingdom.
- Department of Gastroenterology and Hepatology, University Hospital of Wales, Heath Park, Cardiff, United Kingdom
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28
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Wichmann V, Eigeliene N, Saarenheimo J, Jekunen A. Recent clinical evidence on metronomic dosing in controlled clinical trials: a systematic literature review. Acta Oncol 2020; 59:775-785. [PMID: 32275176 DOI: 10.1080/0284186x.2020.1744719] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Introduction: Metronomic dosing is used to give continuous chemotherapy at low doses. The low doses have minimal side effects and may enable cancer treatment to be remodeled toward the management of chronic disease.Methods: We searched PubMed database to obtain relevant clinical trials studying metronomic chemotherapy (MCT). Our main focus was to find controlled phase II and phase III trials.Results: This systematic review summarizes the results of 91 clinical reports focusing on randomized phase II and phase III clinical studies between 2012 and 2018. During that time, nine randomized phase II and 10 randomized phase III studies were published. In the majority of the studies, MCT was well tolerated, and major side effects were rarely seen. Altogether, 4 phase III studies and 4 randomized phase II studies presented positive results and some clinical benefit.Discussion: Most of the studies did not show significantly improved overall survival or progression-free survival. Typically, the metronomic dosing was explored in a maintenance setup and was added to other agents given within normal high doses, whereas no trial was performed challenging metronomic dosing and best supportive care in later treatment lines. Therefore, there is no definite evidence on the efficacy of single metronomic dosing and firm evidence of metronomic dosing is still missing. There is a need for further confirmation of the usefulness of this approach in clinical practice.
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Affiliation(s)
- Viktor Wichmann
- Department of Oncology, Vasa Central Hospital, Vaasa, Finland
| | | | - Jatta Saarenheimo
- Department of Pathology, Vasa Central Hospital, Vaasa, Finland
- Department of Biological and Environmental Science, Nano Science Center, University of Jyväskylä, Jyväskylä, Finland
| | - Antti Jekunen
- Department of Oncology, Vasa Central Hospital, Vaasa, Finland
- Department of Oncology and Radiotherapy, University of Turku, Turku, Finland
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29
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André N, Orbach D, Pasquier E. Metronomic Maintenance for High-Risk Pediatric Malignancies: One Size Will Not Fit All. Trends Cancer 2020; 6:819-828. [PMID: 32601045 DOI: 10.1016/j.trecan.2020.05.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Revised: 04/15/2020] [Accepted: 05/19/2020] [Indexed: 02/07/2023]
Abstract
Maintenance therapy sometimes relies on the use of metronomic chemotherapy (MC); that is, the continuous administration of low-dose chemotherapy. Maintenance therapy has been successfully used for decades in pediatric patients with acute lymphoblastic leukemia (ALL) and recent results have demonstrated improved outcomes in patients with pediatric high-risk rhabdomyosarcoma (RMS) on maintenance therapy. Here, we review the use of metronomic maintenance therapy in pediatric cancer and discuss its mechanisms of action on the tumor microenvironment and cancer cells. We also discuss its potential use as a chemotherapy alone or in combination with targeted therapies, immunotherapies, or agents for drug repurposing.
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Affiliation(s)
- Nicolas André
- Pediatric Hematology and Oncology Department, Hôpital pour Enfant de La Timone, AP-HM, Marseille, France; Centre de Recherche en Cancérologie de Marseille Inserm U1068, Aix-Marseille University, Marseille, France; Metronomics Global Health Initiative, Marseille, France.
| | - Daniel Orbach
- SIREDO Oncology Center (Care, Innovation and Research for Children, Adolescents and Young Adults with Cancer), Institut Curie, PSL University, Paris, France
| | - Eddy Pasquier
- Centre de Recherche en Cancérologie de Marseille Inserm U1068, Aix-Marseille University, Marseille, France; Metronomics Global Health Initiative, Marseille, France
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30
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Cappuccini F, Bryant R, Pollock E, Carter L, Verrill C, Hollidge J, Poulton I, Baker M, Mitton C, Baines A, Meier A, Schmidt G, Harrop R, Protheroe A, MacPherson R, Kennish S, Morgan S, Vigano S, Romero PJ, Evans T, Catto J, Hamdy F, Hill AVS, Redchenko I. Safety and immunogenicity of novel 5T4 viral vectored vaccination regimens in early stage prostate cancer: a phase I clinical trial. J Immunother Cancer 2020; 8:e000928. [PMID: 32591433 PMCID: PMC7319775 DOI: 10.1136/jitc-2020-000928] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/26/2020] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Prostate cancer (PCa) has been under investigation as a target for antigen-specific immunotherapies in metastatic disease settings for the last two decades leading to a licensure of the first therapeutic cancer vaccine, Sipuleucel-T, in 2010. However, neither Sipuleucel-T nor other experimental PCa vaccines that emerged later induce strong T-cell immunity. METHODS In this first-in-man study, VANCE, we evaluated a novel vaccination platform based on two replication-deficient viruses, chimpanzee adenovirus (ChAd) and MVA (Modified Vaccinia Ankara), targeting the oncofetal self-antigen 5T4 in early stage PCa. Forty patients, either newly diagnosed with early-stage PCa and scheduled for radical prostatectomy or patients with stable disease on an active surveillance protocol, were recruited to the study to assess the vaccine safety and T-cell immunogenicity. Secondary and exploratory endpoints included immune infiltration into the prostate, prostate-specific antigen (PSA) change, and assessment of phenotype and functionality of antigen-specific T cells. RESULTS The vaccine had an excellent safety profile. Vaccination-induced 5T4-specific T-cell responses were measured in blood by ex vivo IFN-γ ELISpot and were detected in the majority of patients with a mean level in responders of 198 spot-forming cells per million peripheral blood mononuclear cells. Flow cytometry analysis demonstrated the presence of both CD8+ and CD4+ polyfunctional 5T4-specific T cells in the circulation. 5T4-reactive tumor-infiltrating lymphocytes were isolated from post-treatment prostate tissue. Some of the patients had a transient PSA rise 2-8 weeks following vaccination, possibly indicating an inflammatory response in the target organ. CONCLUSIONS An excellent safety profile and T-cell responses elicited in the circulation and also detected in the prostate gland support the evaluation of the ChAdOx1-MVA 5T4 vaccine in efficacy trials. It remains to be seen if this vaccination strategy generates immune responses of sufficient magnitude to mediate clinical efficacy and whether it can be effective in late-stage PCa settings, as a monotherapy in advanced disease or as part of multi-modality PCa therapy. To address these questions, the phase I/II trial, ADVANCE, is currently recruiting patients with intermediate-risk PCa, and patients with advanced metastatic castration-resistant PCa, to receive this vaccine in combination with nivolumab. TRIAL REGISTRATION The trial was registered with the U.S. National Institutes of Health (NIH) Clinical Trials Registry (ClinicalTrials.gov identifier NCT02390063).
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Affiliation(s)
- Federica Cappuccini
- Nuffield Department of Medicine, The Jenner Institute, Oxford University, Oxford, UK
| | - Richard Bryant
- Nuffield Department of Surgical Sciences, Oxford University, Oxford, UK
- Department of Urology, Churchill Hospital, Oxford, UK
| | - Emily Pollock
- Nuffield Department of Medicine, The Jenner Institute, Oxford University, Oxford, UK
| | - Lucy Carter
- Nuffield Department of Medicine, The Jenner Institute, Oxford University, Oxford, UK
| | - Clare Verrill
- Nuffield Department of Surgical Sciences, Oxford University, Oxford, UK
- Oxford NIHR Biomedical Research Centre, Oxford University, Oxford, UK
| | - Julianne Hollidge
- Nuffield Department of Surgical Sciences, Oxford University, Oxford, UK
| | - Ian Poulton
- Nuffield Department of Medicine, The Jenner Institute, Oxford University, Oxford, UK
| | - Megan Baker
- Nuffield Department of Medicine, The Jenner Institute, Oxford University, Oxford, UK
| | - Celia Mitton
- Nuffield Department of Medicine, The Jenner Institute, Oxford University, Oxford, UK
| | - Andrea Baines
- Nuffield Department of Medicine, The Jenner Institute, Oxford University, Oxford, UK
| | | | | | | | - Andrew Protheroe
- Department of Oncology, Oxford Cancer and Haematology Centre, Churchill Hospital, Oxford, UK
| | | | - Steven Kennish
- Department of Radiology, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
| | - Susan Morgan
- Department of Pathology, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
| | - Selena Vigano
- Oncology, University Hospital of Lausanne, Lausanne, Switzerland
| | - Pedro J Romero
- Oncology, University Hospital of Lausanne, Lausanne, Switzerland
| | | | - James Catto
- Academic Urology Unit, The University of Sheffield, Sheffield, UK
| | - Freddie Hamdy
- Nuffield Department of Surgical Sciences, Oxford University, Oxford, UK
- Department of Urology, Churchill Hospital, Oxford, UK
| | - Adrian V S Hill
- Nuffield Department of Medicine, The Jenner Institute, Oxford University, Oxford, UK
| | - Irina Redchenko
- Nuffield Department of Medicine, The Jenner Institute, Oxford University, Oxford, UK
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31
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Hu H, Liu X, Cai W, Wu D, Xu J, Yuan Y. A Retrospective Exploration of Targeted Maintenance Therapy in Advanced Colorectal Cancer: Based on the Background of Chinese Patient Assistance Program. Front Oncol 2020; 10:522. [PMID: 32391263 PMCID: PMC7190810 DOI: 10.3389/fonc.2020.00522] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Accepted: 03/23/2020] [Indexed: 01/04/2023] Open
Abstract
Background: Maintenance therapy with bevacizumab (Bev) in patients with colorectal cancer (CRC) provides progression-free survival (PFS) benefits. However, the role of maintenance therapy with an anti-EGFR monoclonal antibody has not been established. Methods: Eligible CRC patients were assigned to maintenance therapy with cetuximab (Cet; Cet group) or Bev (Bev group). PFS, the duration of maintenance therapy, and safety were analyzed. Cox multivariate regression analyses were performed to determine independent prognostic factors. Results: A total of 143 eligible patients were assigned to the Cet (n = 79) or Bev (n = 64) groups. In the Cet group, all patients had KRAS wild-type. The baseline characteristics were well-balanced between the two groups, except for a higher percentage of patients with a left-sided primary tumor in the Cet group than in the Bev group (86.1 vs. 62.5%, P < 0.0001). The median PFS was not significantly different between the Cet group and the Bev group: 5.9 months (95% CI 2.30–9.50) vs. 7.0 months (95% CI 3.69–10.31) (HR 1.17, 95% CI 0.77–1.79, P = 0.45). The median duration of maintenance therapy in the Cet group was shorter than that in the Bev group: 4.0 months (95% CI 1.94–5.99) vs. 4.8 months (95% CI 2.68–6.98) (HR 0.90, 95% CI 0.61–1.33; P = 0.59). The subgroup analyses showed that the median PFS for the first maintenance therapy and the second maintenance therapy were 3.2 months (95% CI 1.69–4.78) and 5.2 months (95% CI 1.58–8.83), respectively (HR 0.89, 95% CI 0.44–1.81; P = 0.75). Conclusions: This study suggests that maintenance therapy with Cet or Bev can be considered an appropriate option following induction chemotherapy for selected patients with advanced CRC. Multiple maintenance therapy seems to confer survival benefits in advanced CRC. Maintenance therapy with Cet after first-line induction chemotherapy seems to be associated with greater survival benefits.
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Affiliation(s)
- Hanguang Hu
- Departments of Medical Oncology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Xue Liu
- Departments of Medical Oncology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Wen Cai
- Departments of Medical Oncology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Dehao Wu
- Cancer Institute (Key Laboratory of Cancer Prevention and Intervention, China National Ministry of Education), The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Junxi Xu
- Departments of Medical Oncology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Ying Yuan
- Departments of Medical Oncology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Cancer Institute (Key Laboratory of Cancer Prevention and Intervention, China National Ministry of Education), The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
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32
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Abstract
The immune system has evolved complex effector mechanisms to protect the host against a diversity of pathogenic organisms and regulatory adaptations that can curtail pathological sequelae of inflammatory events, prevent autoimmunity, and assist in tissue repair. Cancers, by virtue of their local manifestations of tissue dysfunction and destruction, inflammation, and genomic instability, can evoke these protective mechanisms, which support the progression of tumors and prevent their immune eradication. Central to these processes is a subset of CD4+ T cells, known as regulatory T (Treg) cells, that express the X chromosome–linked transcription factor FOXP3. In addition to their critical role in controlling autoimmunity and suppressing inflammatory responses in diverse biological settings, Treg cells are ubiquitously present in the tumor microenvironment where they promote tumor development and progression by dampening antitumor immune responses. Furthermore, Treg cells can directly support the survival of transformed cells through the elaboration of growth factors and interacting with accessory cells in tumors such as fibroblasts and endothelial cells. Current insights into the biology of tumor-associated Treg cells have opened up opportunities for their selective targeting in cancer, with the goal of alleviating their suppression of antitumor immune responses while maintaining overall immune homeostasis.
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Affiliation(s)
- George Plitas
- Immunology Program and Ludwig Center for Cancer Immunotherapy, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA;,
- Breast Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Alexander Y. Rudensky
- Immunology Program and Ludwig Center for Cancer Immunotherapy, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA;,
- Howard Hughes Medical Institute, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
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33
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Huang XM, Zhang NR, Lin XT, Zhu CY, Zou YF, Wu XJ, He XS, He XW, Wan YL, Lan P. Antitumor immunity of low-dose cyclophosphamide: changes in T cells and cytokines TGF-beta and IL-10 in mice with colon-cancer liver metastasis. Gastroenterol Rep (Oxf) 2020; 8:56-65. [PMID: 32104586 PMCID: PMC7034239 DOI: 10.1093/gastro/goz060] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 10/02/2019] [Accepted: 10/10/2019] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND The tumor immune microenvironment is one of the most important prognostic factors in liver metastasis from colorectal cancer. Low-dose cyclophosphamide (CTX) is widely believed to be involved in the modulation of the immune system. However, the underlying mechanism of low-dose CTX remains unknown. This study aimed to investigate the antitumor immunity of low-dose CTX in the treatment of colon-cancer liver metastasis. METHODS Thirty mice were randomly divided into five groups. After liver metastasis was established in colon-cancer models, mice in the treatment groups were injected with low-dose CTX (20 mg/kg) at different time points. Liver and spleen tissues were examined for T-cell markers via flow cytometry. Interleukin (IL)-10 and transforming growth factor (TGF)-β1 expression levels in liver tissues were analysed by immunohistochemistry. Serum interferon (IFN)-γ and IL-10 levels were detected by enzyme-linked immunosorbent assay. An additional 20 mice were randomly allocated into two groups and the survival times were recorded. RESULTS The expression levels of CD4+ T cells, CD8+ T cells, and IFN-γ were down-regulated, whereas those of IL-10 and TGF-β1 were up-regulated in liver metastasis from colon cancer in mice. Furthermore, the local and systemic microenvironments of the liver were altered, which led to reduced antitumor immune responses and subsequently liver metastasis. However, treatment with low-dose CTX reversed these effects. The survival times of mice treated with low-dose CTX were significantly longer than those of the other groups. CONCLUSIONS Low-dose CTX exerts its antitumor activity by changing the systemic and local immune microenvironments and enhancing immune regulation in mice. CTX could be used as a drug to prevent and treat liver metastasis from colon cancer.
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Affiliation(s)
- Xiao-Ming Huang
- Department of Hepatobiliary Surgery, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
- Guangdong Institute of Gastroenterology; Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
| | - Nan-Rong Zhang
- Guangdong Institute of Gastroenterology; Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
- Department of Anesthesiology, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
| | - Xu-Tao Lin
- Guangdong Institute of Gastroenterology; Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
- Department of Gastrointestinal Endoscopy, Department of Colorectal Surgery, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
| | - Cai-Yan Zhu
- Guangdong Institute of Gastroenterology; Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
- Department of Pharmacy, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
| | - Yi-Feng Zou
- Guangdong Institute of Gastroenterology; Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
- Department of Colorectal Surgery, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
| | - Xiao-Jian Wu
- Guangdong Institute of Gastroenterology; Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
- Department of Colorectal Surgery, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
| | - Xiao-Sheng He
- Guangdong Institute of Gastroenterology; Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
- Department of Colorectal Surgery, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
| | - Xiao-Wen He
- Guangdong Institute of Gastroenterology; Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
- Department of Colorectal Surgery, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
| | - Yun-Le Wan
- Department of Hepatobiliary Surgery, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
- Guangdong Institute of Gastroenterology; Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
| | - Ping Lan
- Guangdong Institute of Gastroenterology; Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
- Department of Colorectal Surgery, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, P. R. China
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Vanmeerbeek I, Sprooten J, De Ruysscher D, Tejpar S, Vandenberghe P, Fucikova J, Spisek R, Zitvogel L, Kroemer G, Galluzzi L, Garg AD. Trial watch: chemotherapy-induced immunogenic cell death in immuno-oncology. Oncoimmunology 2020; 9:1703449. [PMID: 32002302 PMCID: PMC6959434 DOI: 10.1080/2162402x.2019.1703449] [Citation(s) in RCA: 153] [Impact Index Per Article: 38.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Accepted: 11/01/2019] [Indexed: 12/13/2022] Open
Abstract
The term ‘immunogenic cell death’ (ICD) denotes an immunologically unique type of regulated cell death that enables, rather than suppresses, T cell-driven immune responses that are specific for antigens derived from the dying cells. The ability of ICD to elicit adaptive immunity heavily relies on the immunogenicity of dying cells, implying that such cells must encode and present antigens not covered by central tolerance (antigenicity), and deliver immunostimulatory molecules such as damage-associated molecular patterns and cytokines (adjuvanticity). Moreover, the host immune system must be equipped to detect the antigenicity and adjuvanticity of dying cells. As cancer (but not normal) cells express several antigens not covered by central tolerance, they can be driven into ICD by some therapeutic agents, including (but not limited to) chemotherapeutics of the anthracycline family, oxaliplatin and bortezomib, as well as radiation therapy. In this Trial Watch, we describe current trends in the preclinical and clinical development of ICD-eliciting chemotherapy as partner for immunotherapy, with a focus on trials assessing efficacy in the context of immunomonitoring.
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Affiliation(s)
- Isaure Vanmeerbeek
- Cell Death Research & Therapy (CDRT) unit, Department of Cellular & Molecular Medicine, KU Leuven, Leuven, Belgium
| | - Jenny Sprooten
- Cell Death Research & Therapy (CDRT) unit, Department of Cellular & Molecular Medicine, KU Leuven, Leuven, Belgium
| | - Dirk De Ruysscher
- Maastricht University Medical Center, Department of Radiation Oncology (MAASTRO Clinic), GROW-School for Oncology and Developmental Biology, Maastricht, Netherlands
| | - Sabine Tejpar
- Department of Oncology, KU Leuven, Leuven, Belgium.,UZ Leuven, Leuven, Belgium
| | - Peter Vandenberghe
- Department of Haematology, UZ Leuven, and Department of Human Genetics, KU Leuven, Leuven, Belgium
| | - Jitka Fucikova
- Sotio, Prague, Czech Republic.,Department of Immunology, 2nd Faculty of Medicine and University Hospital Motol, Charles University, Prague, Czech Republic
| | - Radek Spisek
- Sotio, Prague, Czech Republic.,Department of Immunology, 2nd Faculty of Medicine and University Hospital Motol, Charles University, Prague, Czech Republic
| | - Laurence Zitvogel
- Gustave Roussy Comprehensive Cancer Institute, Villejuif, France.,INSERM, U1015, Villejuif, France.,Center of Clinical Investigations in Biotherapies of Cancer (CICBT) 1428, Villejuif, France.,Université Paris Sud/Paris XI, Le Kremlin-Bicêtre, France
| | - Guido Kroemer
- Equipe labellisée par la Ligue contre le cancer, Centre de Recherche des Cordeliers, Université de Paris, Sorbonne Université, INSERM U1138, Paris, France.,Metabolomics and Cell Biology Platforms, Gustave Roussy Comprehensive Cancer Institute, Villejuif, France.,Pôle de Biologie, Hôpital Européen Georges Pompidou, AP-HP, Paris, France.,Suzhou Institute for Systems Medicine, Chinese Academy of Medical Sciences, Suzhou, China.,Department of Women's and Children's Health, Karolinska University Hospital, Stockholm, Sweden
| | - Lorenzo Galluzzi
- Department of Radiation Oncology, Weill Cornell Medical College, New York, NY, USA.,Sandra and Edward Meyer Cancer Center, New York, NY, USA.,Caryl and Israel Englander Institute for Precision Medicine, New York, NY, USA.,Department of Dermatology, Yale School of Medicine, New Haven, CT, USA.,Université de Paris, Paris, France
| | - Abhishek D Garg
- Cell Death Research & Therapy (CDRT) unit, Department of Cellular & Molecular Medicine, KU Leuven, Leuven, Belgium
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MacLachlan BJ, Dolton G, Papakyriakou A, Greenshields-Watson A, Mason GH, Schauenburg A, Besneux M, Szomolay B, Elliott T, Sewell AK, Gallimore A, Rizkallah P, Cole DK, Godkin A. Human leukocyte antigen (HLA) class II peptide flanking residues tune the immunogenicity of a human tumor-derived epitope. J Biol Chem 2019; 294:20246-20258. [PMID: 31619516 PMCID: PMC6937582 DOI: 10.1074/jbc.ra119.009437] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2019] [Revised: 09/18/2019] [Indexed: 01/03/2023] Open
Abstract
CD4+ T-cells recognize peptide antigens, in the context of human leukocyte antigen (HLA) class II molecules (HLA-II), which through peptide-flanking residues (PFRs) can extend beyond the limits of the HLA binding. The role of the PFRs during antigen recognition is not fully understood; however, recent studies have indicated that these regions can influence T-cell receptor (TCR) affinity and pHLA-II stability. Here, using various biochemical approaches including peptide sensitivity ELISA and ELISpot assays, peptide-binding assays and HLA-II tetramer staining, we focused on CD4+ T-cell responses against a tumor antigen, 5T4 oncofetal trophoblast glycoprotein (5T4), which have been associated with improved control of colorectal cancer. Despite their weak TCR-binding affinity, we found that anti-5T4 CD4+ T-cells are polyfunctional and that their PFRs are essential for TCR recognition of the core bound nonamer. The high-resolution (1.95 Å) crystal structure of HLA-DR1 presenting the immunodominant 20-mer peptide 5T4111-130, combined with molecular dynamic simulations, revealed how PFRs explore the HLA-proximal space to contribute to antigen reactivity. These findings advance our understanding of what constitutes an HLA-II epitope and indicate that PFRs can tune weak affinity TCR-pHLA-II interactions.
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Affiliation(s)
- Bruce J MacLachlan
- Division of Infection and Immunity and Systems Immunity Research Institute, Cardiff University, Cardiff CF14 4XN, United Kingdom
| | - Garry Dolton
- Division of Infection and Immunity and Systems Immunity Research Institute, Cardiff University, Cardiff CF14 4XN, United Kingdom
| | - Athanasios Papakyriakou
- Institute of Biosciences and Applications, NCSR "Demokritos," Agia Paraskevi, 15341 Athens, Greece
| | - Alexander Greenshields-Watson
- Division of Infection and Immunity and Systems Immunity Research Institute, Cardiff University, Cardiff CF14 4XN, United Kingdom
| | - Georgina H Mason
- Division of Infection and Immunity and Systems Immunity Research Institute, Cardiff University, Cardiff CF14 4XN, United Kingdom
| | - Andrea Schauenburg
- Division of Infection and Immunity and Systems Immunity Research Institute, Cardiff University, Cardiff CF14 4XN, United Kingdom
| | - Matthieu Besneux
- Division of Infection and Immunity and Systems Immunity Research Institute, Cardiff University, Cardiff CF14 4XN, United Kingdom
| | - Barbara Szomolay
- Division of Infection and Immunity and Systems Immunity Research Institute, Cardiff University, Cardiff CF14 4XN, United Kingdom
| | - Tim Elliott
- Institute for Life Sciences, University of Southampton, Southampton SO17 1BJ, United Kingdom
- Centre for Cancer Immunology, University of Southampton, Faculty of Medicine, University Hospital, Southampton SO16 6YD, United Kingdom
| | - Andrew K Sewell
- Division of Infection and Immunity and Systems Immunity Research Institute, Cardiff University, Cardiff CF14 4XN, United Kingdom
| | - Awen Gallimore
- Division of Infection and Immunity and Systems Immunity Research Institute, Cardiff University, Cardiff CF14 4XN, United Kingdom
| | - Pierre Rizkallah
- Division of Infection and Immunity and Systems Immunity Research Institute, Cardiff University, Cardiff CF14 4XN, United Kingdom
| | - David K Cole
- Division of Infection and Immunity and Systems Immunity Research Institute, Cardiff University, Cardiff CF14 4XN, United Kingdom
| | - Andrew Godkin
- Division of Infection and Immunity and Systems Immunity Research Institute, Cardiff University, Cardiff CF14 4XN, United Kingdom
- Department of Gastroenterology and Hepatology, University Hospital of Wales, CF14 4XN Cardiff, United Kingdom
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36
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Nanotechnology is an important strategy for combinational innovative chemo-immunotherapies against colorectal cancer. J Control Release 2019; 307:108-138. [DOI: 10.1016/j.jconrel.2019.06.017] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 06/12/2019] [Accepted: 06/16/2019] [Indexed: 12/15/2022]
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Regulatory T cells in cancer immunosuppression - implications for anticancer therapy. Nat Rev Clin Oncol 2019; 16:356-371. [PMID: 30705439 DOI: 10.1038/s41571-019-0175-7] [Citation(s) in RCA: 834] [Impact Index Per Article: 166.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Regulatory T (Treg) cells, an immunosuppressive subset of CD4+ T cells characterized by the expression of the master transcription factor forkhead box protein P3 (FOXP3), are a component of the immune system with essential roles in maintaining self-tolerance. In addition, Treg cells can suppress anticancer immunity, thereby hindering protective immunosurveillance of neoplasia and hampering effective antitumour immune responses in tumour-bearing hosts, thus promoting tumour development and progression. Identification of the factors that are specifically expressed in Treg cells and/or that influence Treg cell homeostasis and function is important to understanding cancer pathogenesis and to identifying therapeutic targets. Immune-checkpoint inhibitors (ICIs) have provided a paradigm shift in the treatment of cancer. Most immune-checkpoint molecules are expressed in Treg cells, but the effects of ICIs on Treg cells, and thus the contributions of these cells to treatment responses, remain unclear. Notably, evidence indicates that ICIs targeting programmed cell death 1 (PD-1) might enhance the immunosuppressive function of Treg cells, whereas cytotoxic T lymphocyte antigen 4 (CTLA-4) inhibitors might deplete these cells. Thus, although manipulation of Treg cells is a promising anticancer therapeutic strategy, approaches to controlling these cells require further research. Herein, we discuss novel insights into the roles of Treg cells in cancer, which can hopefully be used to develop Treg cell-targeted therapies and facilitate immune precision medicine.
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38
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Jia L, Hu Y, Yang G, Li P. Puerarin suppresses cell growth and migration in HPV-positive cervical cancer cells by inhibiting the PI3K/mTOR signaling pathway. Exp Ther Med 2019; 18:543-549. [PMID: 31258692 PMCID: PMC6566033 DOI: 10.3892/etm.2019.7589] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Accepted: 06/01/2018] [Indexed: 02/07/2023] Open
Abstract
Puerarin is an effective component that is present in high concentrations in the Pueraria lobata plant and is extensively distributed throughout nature. Puerarin possesses a number of pharmacological effects and has strong pharmacological activity with few side effects and extensive clinical applications. The aim of the present study was to explore the effects of Puerarin on the apoptosis of human papillomavirus (HPV)-positive cervical cancer cells and the underlying molecular mechanisms. MTT assay, lactate dehydrogenase activity and Annexin V/fluorescein isothiocyanate/propidium iodide analysis were used to analyze cell growth of HPV-positive HeLa cervical cancer cells treated with Puerarin. Western blotting was performed to measure protein expression in the treated cells. Puerarin significantly reduced cell proliferation and induced apoptosis in HeLa cells. In addition, it was observed that Puerarin significantly enhanced caspase-3/9 activities and significantly increased B-cell lymphoma 2-asscoiate X protein expression in HeLa cells. Puerarin suppressed phosphatidylinositol-3 kinase (PI3K), phosphorylated (p)-protein kinase B (Akt) and p-mammalian target of rapamycin (mTOR) protein expression in HeLa cells. These results indicate that Puerarin induces apoptosis in HPV-positive HeLa cervical cancer cells via inhibiting PI3K/Akt/mTOR signaling.
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Affiliation(s)
- Lihua Jia
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
| | - Yuling Hu
- Department of Obstetrics and Gynecology, Tongzhou Maternal and Child Health Hospital of Beijing, Beijing 101101, P.R. China
| | - Guohua Yang
- Department of Obstetrics and Gynecology, Tongzhou Maternal and Child Health Hospital of Beijing, Beijing 101101, P.R. China
| | - Peiling Li
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
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Besneux M, Greenshields-Watson A, Scurr MJ, MacLachlan BJ, Christian A, Davies MM, Hargest R, Phillips S, Godkin A, Gallimore A. The nature of the human T cell response to the cancer antigen 5T4 is determined by the balance of regulatory and inflammatory T cells of the same antigen-specificity: implications for vaccine design. Cancer Immunol Immunother 2019; 68:247-256. [PMID: 30406375 PMCID: PMC6394487 DOI: 10.1007/s00262-018-2266-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Accepted: 10/19/2018] [Indexed: 01/08/2023]
Abstract
The oncofoetal antigen 5T4 is a promising T cell target in the context of colorectal cancer, as demonstrated by a recent clinical study where 5T4-specific T cell responses, induced by vaccination or cyclophosphamide, were associated with a significantly prolonged survival of patients with metastatic disease. Whilst Th1-type (IFN-γ+) responses specific to 5T4, and other oncofoetal antigens, are often readily detectable in early stage CRC patients and healthy donors, their activity is suppressed as the cancer progresses by CD4+CD25hiFoxp3+ regulatory T cells (Treg) which contribute to the immunosuppressive environment conducive to tumour growth. This study mapped the fine specificity of Th1 and Treg cell responses to the 5T4 protein. Surprisingly, both immunogenic peptides and those recognised by Tregs clustered in the same HLA-DR transcending epitope-rich hotspots within the 5T4 protein. Similarly, regions of low Th1-cell immunogenicity also did not contain peptides capable of stimulating Tregs, further supporting the notion that Treg and Th1 cells recognise the same peptides. Understanding the rules which govern the balance of Th1 and Treg cells responding to a given peptide specificity is, therefore, of fundamental importance to designing strategies for manipulating the balance in favour of Th1 cells, and thus the most effective anti-cancer T cell responses.
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Affiliation(s)
- Matthieu Besneux
- Division of Infection and Immunity, Henry Wellcome Building, Cardiff University, Health Park, Cardiff, CF14 4XN, UK
| | | | - Martin J Scurr
- Division of Infection and Immunity, Henry Wellcome Building, Cardiff University, Health Park, Cardiff, CF14 4XN, UK
| | - Bruce J MacLachlan
- Division of Infection and Immunity, Henry Wellcome Building, Cardiff University, Health Park, Cardiff, CF14 4XN, UK
| | - Adam Christian
- Department of Pathology, University Hospital of Wales, Cardiff, UK
| | - Michael M Davies
- Department of Colorectal Surgery, University Hospital of Wales, Cardiff, UK
| | - Rachel Hargest
- Department of Colorectal Surgery, University Hospital of Wales, Cardiff, UK
- CCMRC, Division of Cancer and Genetics, Henry Wellcome Building, Cardiff University, Cardiff, UK
| | - Simon Phillips
- Department of Colorectal Surgery, University Hospital of Wales, Cardiff, UK
| | - Andrew Godkin
- Division of Infection and Immunity, Henry Wellcome Building, Cardiff University, Health Park, Cardiff, CF14 4XN, UK.
- Department of Gastroenterology, Hepatology and Endoscopy, University Hospital of Wales, Cardiff, UK.
| | - Awen Gallimore
- Division of Infection and Immunity, Henry Wellcome Building, Cardiff University, Health Park, Cardiff, CF14 4XN, UK
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40
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Heinhuis KM, Ros W, Kok M, Steeghs N, Beijnen JH, Schellens JHM. Enhancing antitumor response by combining immune checkpoint inhibitors with chemotherapy in solid tumors. Ann Oncol 2019; 30:219-235. [PMID: 30608567 DOI: 10.1093/annonc/mdy551] [Citation(s) in RCA: 318] [Impact Index Per Article: 63.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/08/2023] Open
Abstract
BACKGROUND Cancer immunotherapy has changed the standard of care for a subgroup of patients with advanced disease. Immune checkpoint blockade (ICB) in particular has shown improved survival compared with previous standards of care for several tumor types. Although proven to be successful in more immunogenic tumors, ICB is still largely ineffective in patients with tumors that are not infiltrated by immune cells, the so-called cold tumors. PATIENTS AND METHODS This review describes the effects of different chemotherapeutic agents on the immune system and the potential value of these different types of chemotherapy as combination partners with ICB in patients with solid tumors. Both preclinical data and currently ongoing clinical trials were evaluated. In addition, we reviewed findings regarding different dosing schedules, including the effects of an induction phase and applying metronomic doses of chemotherapy. RESULTS Combining ICB with other treatment modalities may lead to improved immunological conditions in the tumor microenvironment and could thereby enhance the antitumor immune response, even in tumor types that are so far unresponsive to ICB monotherapy. Chemotherapy, that was originally thought to be solely immunosuppressive, can exert immunomodulatory effects which may be beneficial in combination with immunotherapy. Each chemotherapeutic drug impacts the tumor microenvironment differently, and in order to determine the most suitable combination partners for ICB it is crucial to understand these mechanisms. CONCLUSION Preclinical studies demonstrate that the majority of chemotherapeutic drugs has been shown to exert immunostimulatory effects, either by inhibiting immunosuppressive cells and/or activating effector cells, or by increasing immunogenicity and increasing T-cell infiltration. However, for certain chemotherapeutic agents timing, dose and sequence of administration of chemotherapeutic agents and ICB is important. Further studies should focus on determining the optimal drug combinations, sequence effects and optimal concentration-time profiles in representative preclinical models.
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Affiliation(s)
- K M Heinhuis
- Divisions of Pharmacology, Utrecht University, Utrecht, The Netherlands
| | - W Ros
- Divisions of Pharmacology, Utrecht University, Utrecht, The Netherlands
| | - M Kok
- Medical Oncology and Molecular Oncology & Immunology, Utrecht University, Utrecht, The Netherlands
| | - N Steeghs
- Medical Oncology, Department of Clinical Pharmacology, Utrecht University, Utrecht, The Netherlands
| | - J H Beijnen
- Divisions of Pharmacology, Utrecht University, Utrecht, The Netherlands; Department of Pharmacy, The Netherlands Cancer Institute, Amsterdam, The Netherlands; MC Slotervaart, Amsterdam, The Netherlands; Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands
| | - J H M Schellens
- Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands.
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Pan-European Expert Meeting on the Use of Metronomic Chemotherapy in Advanced Breast Cancer Patients: The PENELOPE Project. Adv Ther 2019; 36:381-406. [PMID: 30565179 DOI: 10.1007/s12325-018-0844-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Indexed: 12/13/2022]
Abstract
INTRODUCTION Metronomic chemotherapy (mCHT) is a treatment regimen in which drugs are administered frequently or continuously and that maintains low, prolonged, and pharmacologically active plasma concentrations of drugs to avoid toxicity associated with traditional chemotherapy regimens, while achieving tumor response. Despite the increasing use of mCHT in patients with metastatic breast cancer (MBC) and the endorsement of mCHT in guidelines, no consensus exists about which patients may substantially benefit from mCHT, which agents can be recommended, and in which treatment setting mCHT is most appropriate. METHODS In October 2017, ten international experts in the management of breast cancer convened to develop a report describing the current status of the use of mCHT for the treatment of advanced breast cancer, based not only on current literature but also on their opinion. The Delphi method was used to reach consensus. RESULTS A full consensus was reached concerning the acknowledgement that mCHT is not simply a different way of administering chemotherapy but a truly new treatment option. The best-known effect of mCHT is on angiogenesis inhibition, but exciting new data are on the way regarding potential activity on immune system activation. The experts strongly suggest that the ideal patients for mCHT are those with hormone receptor (HR)-positive tumors or those with triple-negative disease. Independently of HR status, mCHT could be an advantageous option for elderly patients, who are often under-treated simply because of their age. CONCLUSION Current data support the use of mCHT in selected patients with MBC. FUNDING Pierre Fabre.
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42
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Recombinant Viruses for Cancer Therapy. Biomedicines 2018; 6:biomedicines6040094. [PMID: 30257488 PMCID: PMC6316473 DOI: 10.3390/biomedicines6040094] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 09/17/2018] [Accepted: 09/20/2018] [Indexed: 12/28/2022] Open
Abstract
Recombinant viruses are novel therapeutic agents that can be utilized for treatment of various diseases, including cancers. Recombinant viruses can be engineered to express foreign transgenes and have a broad tropism allowing gene expression in a wide range of host cells. They can be selected or designed for specific therapeutic goals; for example, recombinant viruses could be used to stimulate host immune response against tumor-specific antigens and therefore overcome the ability of the tumor to evade the host's immune surveillance. Alternatively, recombinant viruses could express immunomodulatory genes which stimulate an anti-cancer immune response. Oncolytic viruses can replicate specifically in tumor cells and induce toxic effects leading to cell lysis and apoptosis. However, each of these approaches face certain difficulties that must be resolved to achieve maximum therapeutic efficacy. In this review we discuss actively developing approaches for cancer therapy based on recombinant viruses, problems that need to be overcome, and possible prospects for further development of recombinant virus based therapy.
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Hughes E, Scurr M, Campbell E, Jones E, Godkin A, Gallimore A. T-cell modulation by cyclophosphamide for tumour therapy. Immunology 2018; 154:62-68. [PMID: 29460448 PMCID: PMC5904691 DOI: 10.1111/imm.12913] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Revised: 02/13/2018] [Accepted: 02/14/2018] [Indexed: 12/14/2022] Open
Abstract
The power of T cells for cancer treatment has been demonstrated by the success of co-inhibitory receptor blockade and adoptive T-cell immunotherapies. These treatments are highly successful for certain cancers, but are often personalized, expensive and associated with harmful side effects. Other T-cell-modulating drugs may provide additional means of improving immune responses to tumours without these disadvantages. Conventional chemotherapeutic drugs are traditionally used to target cancers directly; however, it is clear that some also have significant immune-modulating effects that can be harnessed to target tumours. Cyclophosphamide is one such drug; used at lower doses than in mainstream chemotherapy, it can perturb immune homeostasis, tipping the balance towards generation of anti-tumour T-cell responses and control of cancer growth. This review discusses its growing reputation as an immune-modulator whose multiple effects synergize with the microbiota to tip the balance towards tumour immunity offering widespread benefits as a safe, and relatively inexpensive component of cancer immunotherapy.
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Affiliation(s)
- Ellyn Hughes
- Division of Infection & ImmunitySchool of MedicineCardiff UniversityCardiffUK
- Present address:
Faculty of Medicine Nursing and Health SciencesSchool of Biomedical SciencesMonash UniversityMelbourneAustralia
| | - Martin Scurr
- Division of Infection & ImmunitySchool of MedicineCardiff UniversityCardiffUK
| | - Emma Campbell
- Division of Infection & ImmunitySchool of MedicineCardiff UniversityCardiffUK
| | - Emma Jones
- Division of Infection & ImmunitySchool of MedicineCardiff UniversityCardiffUK
| | - Andrew Godkin
- Division of Infection & ImmunitySchool of MedicineCardiff UniversityCardiffUK
| | - Awen Gallimore
- Division of Infection & ImmunitySchool of MedicineCardiff UniversityCardiffUK
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Ahrends T, Borst J. The opposing roles of CD4 + T cells in anti-tumour immunity. Immunology 2018; 154:582-592. [PMID: 29700809 PMCID: PMC6050207 DOI: 10.1111/imm.12941] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 04/12/2018] [Accepted: 04/13/2018] [Indexed: 02/06/2023] Open
Abstract
Cancer immunotherapy focuses mainly on anti-tumour activity of CD8+ cytotoxic T lymphocytes (CTLs). CTLs can directly kill all tumour cell types, provided they carry recognizable antigens. However, CD4+ T cells also play important roles in anti-tumour immunity. CD4+ T cells can either suppress or promote the anti-tumour CTL response, either in secondary lymphoid organs or in the tumour. In this review, we highlight opposing mechanisms of conventional and regulatory T cells at both sites. We outline how current cancer immunotherapy strategies affect both subsets and how selective modulation of each subset is important to maximize the clinical response of cancer patients.
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Affiliation(s)
- Tomasz Ahrends
- Division of Tumour Biology and ImmunologyThe Netherlands Cancer InstituteAmsterdamThe Netherlands
| | - Jannie Borst
- Division of Tumour Biology and ImmunologyThe Netherlands Cancer InstituteAmsterdamThe Netherlands
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45
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Correlates of immune and clinical activity of novel cancer vaccines. Semin Immunol 2018; 39:119-136. [PMID: 29709421 DOI: 10.1016/j.smim.2018.04.001] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Revised: 04/16/2018] [Accepted: 04/17/2018] [Indexed: 12/30/2022]
Abstract
Cancer vaccines are solely meant to amplify the pool of type 1 cytokine oriented CD4+ and CD8+ T cells that recognize tumor antigen and ultimately foster control and destruction of a growing tumor. They are not designed to deal with all aspects of immune ignorance, exclusion, suppression and escape that are generally in place in patients with cancer and may prevent the T cells to enter the tumor or to exert their effector function. This simple fact prompted for a reappraisal of the many recent trials in which therapeutic cancer vaccines have been examined as monotherapy. In this review, I focus on trials examining therapeutic cancer vaccines at different stages of existing disease. The analysis of vaccine-induced immune responses and clinical activity of therapeutic cancer vaccines revealed four levels of evidence for vaccine efficacy. The lowest levels, reflect the many trials in which the strength of the tumor-reactive T cell response of vaccinated patients is associated with better clinical outcome or change in tumor marker. The highest levels indicate occasional regressions of tumors and metastases after vaccination or reflect a stronger clinical impact of vaccine in a randomized trial. A whole series of trials in which vaccine-induced tumor immunity correlates with the clinical impact of cancer vaccines in premalignant diseases, settings of low tumor burden or tumor regressions in patients with cancer, form an attest to the fact that cancer vaccines work. While the current number of true clinical responders in each cancer trial is too low for firm conclusions on immune correlates of clinical reactivity in cancer, extrapolation of the results from vaccinated patients with pre-cancers suggest a requirement of broad type 1 T cell reactivity.
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46
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Yao Y, Li Q, Wang H. MiR-216b suppresses colorectal cancer proliferation, migration, and invasion by targeting SRPK1. Onco Targets Ther 2018; 11:1671-1681. [PMID: 29615842 PMCID: PMC5870636 DOI: 10.2147/ott.s161835] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Background MiR-216b has been reported to be involved in the development of some cancers, however, the role of miR-216b in colorectal cancer (CRC) remains unclear. Purpose This study aimed to investigate the mechanism underlying miR-216b-induced CRC development. Methods We detected the expression of miR-216b in 80 cases of CRC tissues and cell lines, and further analyzed the association between miR-216b and clinical pathological indicators as well as prognosis. In vitro, the miR-216b overexpression cell model was established for further functional assay. Results We demonstrated that miR-216b in CRC tissues and cell lines was markedly decreased compared with corresponding adjacent normal tissues and colonic mucosal epithelial cell line, and was obviously associated with the TNM stage, lymph node metastases, and poor overall survival as well as recurrence-free survival. Furthermore, we found that miR-216b inhibited cell proliferation, cell cycle, migration, and invasion by targeting 3′-UTR of SRPK1. Besides, SRPK1 over-expression reversed miR-216b-inhibited cell proliferation, migration and invasion, while SRPK1 inhibition aggravated these effects. Conclusions We identified that miR-216b suppresses colorectal cancer proliferation, migration and invasion by targeting SRPK1, which shed light on how miR-216b functions in CRC pathogenesis.
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Affiliation(s)
- Yanfen Yao
- Department of Intensive Care Unit, Shandong Provincial Third Hospital, Jinan, People's Republic of China
| | - Qiaorong Li
- Department of Intensive Care Unit, Shandong Provincial Third Hospital, Jinan, People's Republic of China
| | - Hong Wang
- Department of General Surgery, Shandong Provincial Third Hospital, Jinan, People's Republic of China
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Abstract
Metastatic colorectal cancer (mCRC) is a leading cause of cancer-related mortality with a 5-year overall survival rate of 13%. Despite recent advances in cancer immunotherapy, only the minority of CRC patients (<15%) with microsatellite instability can potentially benefit from immune checkpoint inhibitors, the only immunotherapy currently approved for mCRC. In that context, there is an unmet need to improve survival in mCRC. Our ever-increasing understanding of the immune system and its interactions with cancer has allowed development of multiple strategies to potentially improve outcomes in the majority of mCRC patients. Various approaches to manipulate patient immunity to recognize and kill colorectal cancer cells are being explored simultaneously, with combination therapies likely being the most effective. Ideally, therapies would target tumor-restricted antigens selectively found in tumors, but shielded from immune attack in normal tissues, to mount an effective cytotoxic T-cell response, while also overcoming cellular and molecular inhibitory pathways, self-tolerance, and T-cell exhaustion. Here, we provide a brief overview of the most promising immunotherapy candidates in mCRC and their strategies to produce a lasting immune response and clinical benefit in patients with mCRC.
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Affiliation(s)
- Babar Bashir
- a Departments of Pharmacology and Experimental Therapeutics , Thomas Jefferson University , Philadelphia , PA , USA.,b Department of Medical Oncology , Thomas Jefferson University , Philadelphia , PA , USA
| | - Adam E Snook
- a Departments of Pharmacology and Experimental Therapeutics , Thomas Jefferson University , Philadelphia , PA , USA
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