1
|
Kiaei SZF, Nouralishahi A, Ghasemirad M, Barkhordar M, Ghaffari S, Kheradjoo H, Saleh M, Mohammadzadehsaliani S, Molaeipour Z. Advances in natural killer cell therapies for breast cancer. Immunol Cell Biol 2023; 101:705-726. [PMID: 37282729 DOI: 10.1111/imcb.12658] [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: 03/21/2023] [Revised: 04/28/2023] [Accepted: 05/06/2023] [Indexed: 06/08/2023]
Abstract
Breast cancer (BC) is the most common cause of cancer death in women. According to the American Cancer Society's yearly cancer statistics, BC constituted almost 15% of all the newly diagnosed cancer cases in 2022 for both sexes. Metastatic disease occurs in 30% of patients with BC. The currently available treatments fail to cure metastatic BC, and the average survival time for patients with metastatic BC is approximately 2 years. Developing a treatment method that terminates cancer stem cells without harming healthy cells is the primary objective of novel therapeutics. Adoptive cell therapy is a branch of cancer immunotherapy that utilizes the immune cells to attack cancer cells. Natural killer (NK) cells are an essential component of innate immunity and are critical in destroying tumor cells without prior stimulation with antigens. With the advent of chimeric antigen receptors (CARs), the autologous or allogeneic use of NK/CAR-NK cell therapy has raised new hopes for treating patients with cancer. Here, we describe recent developments in NK and CAR-NK cell immunotherapy, including the biology and function of NK cells, clinical trials, different sources of NK cells and their future perspectives on BC.
Collapse
Affiliation(s)
- Seyedeh Zahra Fotook Kiaei
- Department of Pulmonary and Critical Care, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Mohammad Ghasemirad
- Department of Periodontics, Faculty of Dentistry, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
| | - Maryam Barkhordar
- Hematology, Oncology and Stem Cell Transplantation Research Center (HORCSCT), Tehran University of Medical Sciences, Tehran, Iran
| | - Sasan Ghaffari
- Department of Immunology, H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL, USA
| | | | - Mahshid Saleh
- Wisconsin National Primate Research Center, University of Wisconsin Graduate School, Madison, WI, USA
| | | | - Zahra Molaeipour
- Hematology Oncology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| |
Collapse
|
2
|
Zhao X, Cong S, Guo Q, Cheng Y, Liang T, Wang J, Zhang G. Combination of Immune-Related Genomic Alterations Reveals Immune Characterization and Prediction of Different Prognostic Risks in Ovarian Cancer. Front Cell Dev Biol 2021; 9:653357. [PMID: 33968933 PMCID: PMC8102990 DOI: 10.3389/fcell.2021.653357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Accepted: 03/17/2021] [Indexed: 11/13/2022] Open
Abstract
With the highest case-fatality rate among women, the molecular pathological alterations of ovarian cancer (OV) are complex, depending on the diversity of genomic alterations. Increasing evidence supports that immune infiltration in tumors is associated with prognosis. Therefore, we aim to assess infiltration in OV using multiple methods to capture genomic signatures regulating immune events to identify reliable predictions of different outcomes. A dataset of 309 ovarian serous cystadenocarcinoma patients with overall survival >90 days from The Cancer Genome Atlas (TCGA) was analyzed. Multiple estimations and clustering methods identified and verified two immune clusters with component differences. Functional analyses pointed out immune-related alterations underlying internal genomic variables potentially. After extracting immune genes from a public database, the LASSO Cox regression model with 10-fold cross-validation was used for selecting genes associated with overall survival rate significantly, and a risk score model was then constructed. Kaplan-Meier survival and Cox regression analyses among cohorts were performed systematically to evaluate prognostic efficiency among the risk score model and other clinical pathological parameters, establishing a predictive ability independently. Furthermore, this risk score model was compared among identified signatures in previous studies and applied to two external cohorts, showing better prediction performance and generalization ability, and also validated as robust in association with immune cell infiltration in bulk tissues. Besides, a transcription factor regulation network suggested upper regulatory mechanisms in OV. Our immune risk score model may provide gyneco-oncologists with predictive values for the prognosis and treatment management of patients with OV.
Collapse
Affiliation(s)
| | | | | | | | | | | | - Guangmei Zhang
- Department of Gynecology, The First Affiliated Hospital, Harbin Medical University, Harbin, China
| |
Collapse
|
3
|
Zhang C, Wang L, Liu H, Deng G, Xu P, Tan Y, Xu Y, Liu B, Chen Q, Tian D. ADPRH is a prognosis-related biomarker and correlates with immune infiltrates in low grade glioma. J Cancer 2021; 12:2912-2920. [PMID: 33854592 PMCID: PMC8040889 DOI: 10.7150/jca.51643] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 03/03/2021] [Indexed: 12/12/2022] Open
Abstract
Background: ADPRH is a modulator of CD8+ T cell functions, and dysregulation of ADPRH has been identified to involve in carcinogenesis of cancers. However, the association of ADPRH with low grade glioma (LGG) remains unclear. Methods: The expression of ADPRH in LGG was first analyzed in GLIOVIS and GEPIA databases and then validated by real-time PCR (rt-PCR), immunochemistry and human protein atlas (HPA). Univariate and multivariate Cox analysis and Kaplan-Meier plots were designed to assess the prognostic value of ADPRH in LGG. The correlation of ADPRH and immune infiltration was evaluated by data in TIMER and ESTIMATE databases. Gene set enrichment analysis was conducted to detect biological processes associated with ADPRH. Results: ADPRH was significantly upregulated in LGG in comparison to non-tumor brain samples in transcriptomic and proteomic levels. The high ADPRH expression indicated unfavorable overall survival (OS) and progression-free survival (PFS) in patients with LGG using Kaplan-Meier plots. And multivariate Cox analysis demonstrated the expression level of ADPRH was an independent prognosis-predicting index for OS and PFS of LGG patients in all cohorts separately. Gene Set Enrichment Analysis (GSEA) indicated that high expression of ADPRH was involved in the upregulation of P53 signaling pathway, KRAS signaling pathway, IL6/JAK-STAT3 signaling and TNF-beta signaling pathways. By TIMER and ESTIMATE databases, we identified ADPRH expression had strong correlation with tumor immune infiltrating cells (TIICs). Conclusions: In summary, our findings demonstrated that ADPRH might be a potential prognostic biomarker and correlated with TIICs in LGG.
Collapse
Affiliation(s)
- Chunyu Zhang
- Department of Neurosurgery, Renmin Hospital of Wuhan University, Wuhan, 430060, Hubei Province, P.R.C
| | - Long Wang
- Department of Neurosurgery, Renmin Hospital of Wuhan University, Wuhan, 430060, Hubei Province, P.R.C
| | - Haitao Liu
- Department of Cardiothoracic Surgery, The First Affiliated Hospital of Jiaxing University, Jiaxing, 314001, Zhejiang Province, P.R.C
| | - Gang Deng
- Department of Neurosurgery, Renmin Hospital of Wuhan University, Wuhan, 430060, Hubei Province, P.R.C
| | - Pengfei Xu
- Sun Yat-sen University, The Seventh Affiliated Hospital, Shenzhen, 518000, Guangdong Province, P.R.C
| | - Yinqiu Tan
- Department of Neurosurgery, Renmin Hospital of Wuhan University, Wuhan, 430060, Hubei Province, P.R.C
| | - Yang Xu
- Department of Neurosurgery, Renmin Hospital of Wuhan University, Wuhan, 430060, Hubei Province, P.R.C
| | - Baohui Liu
- Department of Neurosurgery, Renmin Hospital of Wuhan University, Wuhan, 430060, Hubei Province, P.R.C
| | - Qianxue Chen
- Department of Neurosurgery, Renmin Hospital of Wuhan University, Wuhan, 430060, Hubei Province, P.R.C
| | - Daofeng Tian
- Department of Neurosurgery, Renmin Hospital of Wuhan University, Wuhan, 430060, Hubei Province, P.R.C
| |
Collapse
|
4
|
Castellani M, Felaco M, Pandolfi F, Salini V, De Amicis D, Orso C, Vecchiet J, Tetè S, Ciampoli C, Conti F, Cerulli G, Caraffa A, Antinolfi P, Cuccurullo C, Felaco P, Kempuraj D, Boscolo P, Sabatino G, Shaik Y. Mast Cells and Arachidonic Acid Cascade in Inflammation. EUR J INFLAMM 2017. [DOI: 10.1177/1721727x0900700302] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Prostaglandin D2 PGD2 is a major cyclooxygenase metabolite of arachidonic acid produced by mast cells and it is released following allergen challenge in diseases, such as allergic diseases. PGD2 may act as a neuromodulator and as an allergic and inflammatory mediator. In allergic diseases, activated mast cell synthesizes prostaglandin D2 (first cyclo-oxygenate mediator) which has bronchoconstrictive and vasodilating effects and attracts several leukocytes. It has been found that activated mast cells, challenged with physiological and non- physiological secretagogues, release elevated histamine and tryptase and chymase, leukotrienes B4, C4 and D4, 5-hydroxyeicosatetraenoic acid, PGD2, Platelet Activating Factor (PAF), heparin, and high-molecular-weight neutrophil chemotactic factor and cytokines/chemokines. PGD2 exerts its biological activity through the DP and CRTH2 receptors and their cDNA cloning which were characterized 15 years ago. In this report, we revisited the biological effects of arachidonic acid compounds released by activated mast cells in allergic and inflammatory states.
Collapse
Affiliation(s)
- M.L. Castellani
- Immunology Division, Medical School, University of Chieti-Pescara, Italy
| | - M. Felaco
- Division of Biology, University of Chieti, Italy
| | | | - V. Salini
- Department of Human Dynamics, University of Chieti-Pescara, Italy
| | - D. De Amicis
- Department of Human Dynamics, University of Chieti-Pescara, Italy
| | - C. Orso
- Department of Human Dynamics, University of Chieti-Pescara, Italy
| | - J. Vecchiet
- Clinic of Infectious Diseases, Medical School, University of Chieti-Pescara, Italy
| | - S. Tetè
- Dental School, University of Chieti-Pescara, Italy
| | - C. Ciampoli
- Dental School, University of Chieti-Pescara, Italy
| | - F. Conti
- Gynecology Division, University of Chieti, Italy
| | - G. Cerulli
- Orthopeadics Division, University of Perugia, Italy
| | - A. Caraffa
- Orthopeadics Division, University of Perugia, Italy
| | - P. Antinolfi
- Orthopeadics Division, University of Perugia, Italy
| | | | - P. Felaco
- Nephrology Division, University of Chieti, Chieti, Italy
| | - D. Kempuraj
- Department of Pharmacology and Experimental Therapeutics, Biochemistry and Internal Medicine Tufts University School of Medicine, Tufts-New England Medical Center, Boston, MA, USA
| | - P. Boscolo
- Department of Biomedical Science, University of Chieti, Chieti, Italy
| | - G. Sabatino
- Department of Paediatrics, G. d'Annunzio University of Chieti-Pescara, Chieti, Italy
| | - Y.B. Shaik
- Department of Medicine, Boston University School of Medicine, Boston, MA, USA
| |
Collapse
|
5
|
Lucchesi M, Sardi I, Puppo G, Chella A, Favre C. The dawn of "immune-revolution" in children: early experiences with checkpoint inhibitors in childhood malignancies. Cancer Chemother Pharmacol 2017; 80:1047-1053. [PMID: 29067473 DOI: 10.1007/s00280-017-3450-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Accepted: 10/09/2017] [Indexed: 10/18/2022]
Abstract
Modern immunotherapy with checkpoint inhibitors has changed clinical practice of adult patients with advanced cancer. Blockade of CTLA-4 and PD-1 pathways have shown survival benefits in different diseases. In children, combination of surgery, radiotherapy and chemotherapy have improved survival rates of solid tumors. However, the outcomes for subsets of patients such as those with high-grade, refractory, or metastatic disease remain extremely poor. Currently, the treatment of these patients is almost exclusively based on standard chemotherapy. The significant proportion of pediatric cancers with high number of mutations and subsequent high expression of neoantigens, together with the potential prognostic role of the immunosuppressive checkpoint molecules (CTLA-4, PD-L1) can represent a promising rationale that support the use of checkpoint inhibitors. We made a revision about emerging data regarding safety and activity of checkpoint inhibitors in children with solid tumors.
Collapse
Affiliation(s)
- Maurizio Lucchesi
- Pulmonology Unit, Thoracic Cancer Center, Azienda Ospedaliero-Universitaria Pisana, Via Roma, 67, 56126, Pisa, Italy. .,Tuscany Network for Paediatric Oncology-Istituto Toscano Tumori (ITT), Florence, Italy.
| | - Iacopo Sardi
- Neuro-Oncology Unit, Anna Meyer Children's Hospital, Florence, Italy.,Department of Pediatric Oncology, Hematology, and Transplants, Anna Meyer Children's Hospital, Florence, Italy.,Tuscany Network for Paediatric Oncology-Istituto Toscano Tumori (ITT), Florence, Italy
| | - Gianfranco Puppo
- Pulmonology Unit, Thoracic Cancer Center, Azienda Ospedaliero-Universitaria Pisana, Via Roma, 67, 56126, Pisa, Italy
| | - Antonio Chella
- Pulmonology Unit, Thoracic Cancer Center, Azienda Ospedaliero-Universitaria Pisana, Via Roma, 67, 56126, Pisa, Italy.,Tuscany Network for Paediatric Oncology-Istituto Toscano Tumori (ITT), Florence, Italy
| | - Claudio Favre
- Department of Pediatric Oncology, Hematology, and Transplants, Anna Meyer Children's Hospital, Florence, Italy.,Tuscany Network for Paediatric Oncology-Istituto Toscano Tumori (ITT), Florence, Italy
| |
Collapse
|
6
|
Pandolfi F, Franza L, Mandolini C, Conti P. Immune Modulation by Vitamin D: Special Emphasis on Its Role in Prevention and Treatment of Cancer. Clin Ther 2017; 39:884-893. [PMID: 28431765 DOI: 10.1016/j.clinthera.2017.03.012] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 03/06/2017] [Accepted: 03/12/2017] [Indexed: 12/14/2022]
Abstract
PURPOSE Vitamin D has been known to be involved in mineral and bone homeostasis for many years. In the past its main use was in treating osteoporosis and rickets. In recent years it was found that vitamin D is an immune-modulating agent and may also have a role in several diseases, including autoimmune diseases. The immune-modulating effects appear to be mediated by vitamin D interaction with the vitamin D receptor (VDR) that has transcriptional effects and is expressed on various cell types, especially those of the immune system. Immunologic and rheumatologic diseases were the first to be studied, but at the moment the spotlight is on the interactions between tumor cells and vitamin D. This review focuses on four forms of cancer that apparently benefit from a vitamin D supplementation during treatment: prostate, breast, and colorectal cancers and melanoma. Several studies reported that differences exist between white and black patients, which we discuss in the review. METHODS We systematically searched PubMed for studies published in English. The search terms included vitamin D, cancer, breast, colorectal, prostate, and melanoma. FINDINGS AND IMPLICATIONS Our findings show that vitamin D has the potential to become a valid coadjuvant in the treatment of cancer.
Collapse
Affiliation(s)
| | - Laura Franza
- Internal Medicine Catholic University, Rome, Italy
| | | | - Pio Conti
- Postgraduate Medical School, Chieti University, Chieti, Italy.
| |
Collapse
|
7
|
Byun DJ, Wolchok JD, Rosenberg LM, Girotra M. Cancer immunotherapy - immune checkpoint blockade and associated endocrinopathies. Nat Rev Endocrinol 2017; 13:195-207. [PMID: 28106152 PMCID: PMC5629093 DOI: 10.1038/nrendo.2016.205] [Citation(s) in RCA: 438] [Impact Index Per Article: 62.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Advances in cancer therapy in the past few years include the development of medications that modulate immune checkpoint proteins. Cytotoxic T-lymphocyte antigen 4 (CTLA4) and programmed cell death protein 1 (PD1) are two co-inhibitory receptors that are expressed on activated T cells against which therapeutic blocking antibodies have reached routine clinical use. Immune checkpoint blockade can induce inflammatory adverse effects, termed immune-related adverse events (IRAEs), which resemble autoimmune disease. In this Review, we describe the current data regarding immune-related endocrinopathies, including hypophysitis, thyroid dysfunction and diabetes mellitus. We discuss the clinical management of these endocrinopathies within the context of our current understanding of the mechanisms of IRAEs.
Collapse
Affiliation(s)
- David J Byun
- Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, 10065 New York, USA
- Weill Cornell Medical College, 1300 York Avenue, New York, 10065 New York, USA
| | - Jedd D Wolchok
- Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, 10065 New York, USA
- Weill Cornell Medical College, 1300 York Avenue, New York, 10065 New York, USA
| | - Lynne M Rosenberg
- Weill Cornell Medical College, 1300 York Avenue, New York, 10065 New York, USA
| | - Monica Girotra
- Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, 10065 New York, USA
- Weill Cornell Medical College, 1300 York Avenue, New York, 10065 New York, USA
| |
Collapse
|
8
|
Liu CC, Yang H, Zhang R, Zhao JJ, Hao DJ. Tumour-associated antigens and their anti-cancer applications. Eur J Cancer Care (Engl) 2016; 26. [PMID: 26853428 DOI: 10.1111/ecc.12446] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/11/2015] [Indexed: 12/14/2022]
Abstract
So far, a number of tumour-associated antigens (TAAs), such as heat shock proteins, alpha-fetoprotein, carcino-embryonic antigen and others have been identified in a variety of malignant tumours. Differences in the expression levels of TAAs in cancers compared with normal cells have led to these antigens being investigated as diagnostic and prognostic biomarkers or exciting targets in cancer treatment. Here, we systematically list the current representative TAAs to shed some light on current approaches and challenges for their anti-cancer application in cancer therapy. In this review, we discuss the ongoing pre-clinical studies and clinical development of TAAs in human cancers, and the potential application of these TAAs in the diagnosis and prognosis for cancer treatment.
Collapse
Affiliation(s)
- C-C Liu
- Translational Medicine Center, Hong-Hui Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, China
| | - H Yang
- Translational Medicine Center, Hong-Hui Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, China
| | - R Zhang
- Translational Medicine Center, Hong-Hui Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, China
| | - J-J Zhao
- Translational Medicine Center, Hong-Hui Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, China
| | - D-J Hao
- Spine Surgery, Hong-Hui Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, China
| |
Collapse
|
9
|
Yu S, Wang F, Fan L, Wei Y, Li H, Sun Y, Yang A, Jin B, Song C, Yang K. BAP31, a promising target for the immunotherapy of malignant melanomas. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2015; 34:36. [PMID: 25903101 PMCID: PMC4405826 DOI: 10.1186/s13046-015-0153-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2014] [Accepted: 04/01/2015] [Indexed: 01/09/2023]
Abstract
PURPOSE Malignant melanoma's (MM) incidence is rising faster than that of any other cancer in the US and the overall survival at 5 years is less than 10%. B cell associated protein 31 (BAP31) is overexpressed in most MMs and might be a promising target for immunotherapy of this disease. EXPERIMENTAL DESIGN Firstly, we investigated the expression profiles of human BAP31 (hBAP31) and mouse BAP31 (mBAP31) in human and mouse normal tissues, respectively. The expression level of hBAP31 in human MMs and mBAP31 in B16 melanoma cells was also analyzed. Then we constructed novel mBAP31 DNA vaccines and tested there ability to stimulate mBAP31-specific immune responses and antitumor immunity in B16 melanoma-bearing mice. RESULTS For the first time, we found that protein expression of hBAP31 were dramatically upregulated in human MMs when compared with human normal tissues. Predominant protein expression of mBAP31 was found in mouse B16 melanoma cells but not in mouse important organs. When mice were immunized with mBAP31 DNA vaccines, strong cellular response to mBAP31 was observed in the vaccinated mice. CTLs isolated from immunized mice could effectively kill mBAP31-positive target mouse B16 melanoma tumor cells in vitro and vaccination with mBAP31 DNA vaccines had potent anti-tumor activity in therapeutic model using B16 melanoma cells. CONCLUSIONS These are the first data supporting a vaccine targeting BAP31 that is capable of inducing effective immunity against BAP31-expressing MMs and will be applicable to human MMs and hBAP31 DNA vaccine warrants investigation in human clinical trials.
Collapse
Affiliation(s)
- Shaojuan Yu
- Department of Immunology, Fourth Military Medical University, 169 Changle West Road, Xi'an, 710032, People Republic of China. .,Department of Cardiology, First Hospital of Xi,an, 30 Fenxiang, Xi'an, 710003, People Republic of China.
| | - Fuli Wang
- Department of Urology, Xijing Hospital, 125 Changle West Road, Xi'an, 710032, People Republic of China.
| | - Li Fan
- Department of Immunology, Fourth Military Medical University, 169 Changle West Road, Xi'an, 710032, People Republic of China. .,Department of Pharmaceutical Analysis, Fourth Military Medical University, 169 Changle West Road, Xi'an, 710032, People Republic of China.
| | - Yuying Wei
- Department of Immunology, Fourth Military Medical University, 169 Changle West Road, Xi'an, 710032, People Republic of China.
| | - Haitao Li
- Department of Immunology, Fourth Military Medical University, 169 Changle West Road, Xi'an, 710032, People Republic of China.
| | - Yuanjie Sun
- Department of Immunology, Fourth Military Medical University, 169 Changle West Road, Xi'an, 710032, People Republic of China.
| | - Angang Yang
- Department of Immunology, Fourth Military Medical University, 169 Changle West Road, Xi'an, 710032, People Republic of China.
| | - Boquan Jin
- Department of Immunology, Fourth Military Medical University, 169 Changle West Road, Xi'an, 710032, People Republic of China.
| | - Chaojun Song
- Department of Immunology, Fourth Military Medical University, 169 Changle West Road, Xi'an, 710032, People Republic of China.
| | - Kun Yang
- Department of Immunology, Fourth Military Medical University, 169 Changle West Road, Xi'an, 710032, People Republic of China.
| |
Collapse
|
10
|
Haggerty TJ, Dunn IS, Rose LB, Newton EE, Pandolfi F, Kurnick JT. Heat shock protein-90 inhibitors enhance antigen expression on melanomas and increase T cell recognition of tumor cells. PLoS One 2014; 9:e114506. [PMID: 25503774 PMCID: PMC4264751 DOI: 10.1371/journal.pone.0114506] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Accepted: 11/10/2014] [Indexed: 12/23/2022] Open
Abstract
In an effort to enhance antigen-specific T cell recognition of cancer cells, we have examined numerous modulators of antigen-expression. In this report we demonstrate that twelve different Hsp90 inhibitors (iHsp90) share the ability to increase the expression of differentiation antigens and MHC Class I antigens. These iHsp90 are active in several molecular and cellular assays on a series of tumor cell lines, including eleven human melanomas, a murine B16 melanoma, and two human glioma-derived cell lines. Intra-cytoplasmic antibody staining showed that all of the tested iHsp90 increased expression of the melanocyte differentiation antigens Melan-A/MART-1, gp100, and TRP-2, as well as MHC Class I. The gliomas showed enhanced gp100 and MHC staining. Quantitative analysis of mRNA levels showed a parallel increase in message transcription, and a reporter assay shows induction of promoter activity for Melan-A/MART-1 gene. In addition, iHsp90 increased recognition of tumor cells by T cells specific for Melan-A/MART-1. In contrast to direct Hsp90 client proteins, the increased levels of full-length differentiation antigens that result from iHsp90 treatment are most likely the result of transcriptional activation of their encoding genes. In combination, these results suggest that iHsp90 improve recognition of tumor cells by T cells specific for a melanoma-associated antigen as a result of increasing the expressed intracellular antigen pool available for processing and presentation by MHC Class I, along with increased levels of MHC Class I itself. As these Hsp90 inhibitors do not interfere with T cell function, they could have potential for use in immunotherapy of cancer.
Collapse
Affiliation(s)
- Timothy J. Haggerty
- CytoCure LLC, Suite 430C, 100 Cummings Center, Beverly, MA, United States of America
- Department of Pathology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States of America
| | - Ian S. Dunn
- CytoCure LLC, Suite 430C, 100 Cummings Center, Beverly, MA, United States of America
| | - Lenora B. Rose
- CytoCure LLC, Suite 430C, 100 Cummings Center, Beverly, MA, United States of America
| | - Estelle E. Newton
- CytoCure LLC, Suite 430C, 100 Cummings Center, Beverly, MA, United States of America
| | - Franco Pandolfi
- Department of Internal Medicine, Catholic University, Rome, Italy
- * E-mail:
| | - James T. Kurnick
- CytoCure LLC, Suite 430C, 100 Cummings Center, Beverly, MA, United States of America
- Department of Pathology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States of America
| |
Collapse
|
11
|
|
12
|
Clinical significance of Treg cell frequency in acute myeloid leukemia. Int J Hematol 2013; 98:558-62. [DOI: 10.1007/s12185-013-1436-3] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2013] [Revised: 09/05/2013] [Accepted: 09/05/2013] [Indexed: 12/29/2022]
|
13
|
Adenosine receptors as potential targets in melanoma. Pharmacol Res 2013; 76:34-40. [DOI: 10.1016/j.phrs.2013.07.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2013] [Revised: 07/04/2013] [Accepted: 07/04/2013] [Indexed: 01/24/2023]
|
14
|
Suckow MA. Cancer vaccines: harnessing the potential of anti-tumor immunity. Vet J 2013; 198:28-33. [PMID: 23850019 DOI: 10.1016/j.tvjl.2013.06.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2012] [Revised: 04/17/2013] [Accepted: 06/10/2013] [Indexed: 12/23/2022]
Abstract
Although the presence of cancer suggests failure of the immune system to protect against development of tumors, the possibility that immunity can be redirected and focused to generate an anti-tumor response offers great translational possibility. The key to this is identifying antigens likely to be present in any given tumor and functionally critical to tumor survival and growth. Such tumor-associated antigens (TAAs) are varied and optimally should be absent from normal tissue. Of particular interest are TAAs associated with the tumor stroma, as immunity directed against the stroma may restrict the ability of the tumor to grow and metastasize. Important to directing the immune system toward an effect anti-tumor response is the understanding of how TAAs are processed and how the tumor is able to evade immune elimination. The process of immunoediting happens in response to the selective pressure that the immune system places upon tumor cell populations and allows for emergence of tumor cells capable of escaping immune destruction. Efforts to harness the immune system for clinical application has been aided by vaccines based on purified recombinant protein or nucleic acid TAAs. For example, a vaccine for canine melanoma has been developed and approved based on immunization with DNA components of tyrosinase, a glycoprotein essential to melanin synthesis. The performance of cancer vaccines has been aided in some cases when supplemented with immunostimulatory molecules such as interleukin 2 or a novel extracellular matrix vaccine adjuvant. Vaccines with the broadest menu of antigenic targets may be those most likely to succeed against cancer. For this reason, tissue vaccines produced from harvested tumor material may offer significant benefit. With several cancer vaccines on the veterinary and human markets, efforts to understand basic tumor immunology are soon to yield great dividends.
Collapse
Affiliation(s)
- Mark A Suckow
- 400 Freimann Life Science Center, University of Notre Dame, Notre Dame, IN 46556, United States.
| |
Collapse
|
15
|
Tarhini A. Immune-mediated adverse events associated with ipilimumab ctla-4 blockade therapy: the underlying mechanisms and clinical management. SCIENTIFICA 2013; 2013:857519. [PMID: 24278787 PMCID: PMC3820355 DOI: 10.1155/2013/857519] [Citation(s) in RCA: 143] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2012] [Accepted: 01/10/2013] [Indexed: 06/02/2023]
Abstract
Immunomodulation with the anti-CTLA-4 monoclonal antibody ipilimumab has been shown to extend overall survival (OS) in previously treated and treatment-naive patients with unresectable stage III or IV melanoma. Blockade of CTLA-4 signaling with ipilimumab prolongs T-cell activation and restores T-cell proliferation, thus amplifying T-cell-mediated immunity and the patient's capacity to mount an effective antitumor immune response. While this immunostimulation has unprecedented OS benefits in the melanoma setting, it can also result in immune-mediated effects on various organ systems, leading to immune-related adverse events (irAEs). Ipilimumab-associated irAEs are common and typically low grade and manageable, but can also be serious and life threatening. The skin and gastrointestinal tract are most frequently affected, while hepatic, endocrine, and neurologic events are less common. With proper management, most irAEs resolve within a relatively short time, with a predictable resolution pattern. Prompt and appropriate management of these irAEs is essential and treatment guidelines have been developed to assist oncologists and their teams. Implementation of these irAE management algorithms will help ensure that patients are able to benefit from ipilimumab therapy with adequate control of toxicities.
Collapse
Affiliation(s)
- Ahmad Tarhini
- Division of Hematology/Oncology, Department of Medicine, University of Pittsburgh Cancer Institute, UPMC Cancer Pavilion, 5150 Centre Avenue, Room 555, Pittsburgh, PA 15232, USA
| |
Collapse
|
16
|
Simon-Keller K, Barth S, Vincent A, Marx A. Targeting the fetal acetylcholine receptor in rhabdomyosarcoma. Expert Opin Ther Targets 2012; 17:127-38. [PMID: 23231343 DOI: 10.1517/14728222.2013.734500] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
INTRODUCTION Rhabdomyosarcoma (RMS) is the most common soft tissue sarcoma of childhood and adolescence. Recent efforts to enhance overall survival of patients with clinically advanced RMS have failed and there is a demand for conceptually novel treatments. Immune therapeutic options targeting the fetal nicotinic acetylcholine receptor (fnAChR), which is broadly expressed on RMS, are novel approaches to overcome the therapeutic resistance of RMS. Expression of the fnAChR is restricted to developing fetal muscles, some apparently dispensable ocular muscle fibers and thymic myoid cells. Therefore, after-birth fnAChR is a tumor-associated and almost tumor-specific antigen on RMS cells. AREAS COVERED This review gives an overview on nAChR function and expression pattern in RMS tumor cells, and deals with the immunological significance of fnAChR-expressing cells, including the risk of anti-nAChR autoimmunity as a potential side effect of fnAChR-directed immunotherapies. The article also addresses the advantages and disadvantages of vaccination strategies, immunotoxins and chimeric T cells targeting the fnAChR. EXPERT OPINION Finally, we suggest technical and biological strategies to improve the available immunotherapeutic tools including increasing the in vivo expression of the target fnAChR on RMS cells.
Collapse
Affiliation(s)
- Katja Simon-Keller
- University Medical Centre Mannheim, University of Heidelberg, Institute of Pathology, Theodor-Kutzer-Ufer 1-3, D-68135 Mannheim, Germany.
| | | | | | | |
Collapse
|
17
|
Márquez-Rodas I, Martín Algarra S, Avilés Izquierdo JA, Custodio Cabello S, Martín M. A new era in the treatment of melanoma: from biology to clinical practice. Clin Transl Oncol 2012; 13:787-92. [PMID: 22082642 DOI: 10.1007/s12094-011-0734-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Melanoma is the deadliest cutaneous malignancy and its incidence continues to grow. Until 2011, the treatment options for metastatic melanoma were scarce and without any overall survival benefit. The emergence of new targeted therapies for BRAF mutant melanoma (vemurafenib) and immunotherapy (ipilimumab) has changed the standard of care for this disease. The objective of the present review is to summarise the biological background of the new therapeutic approaches in melanoma, focusing on apoptosis resistance, immune modulation and angiogenesis, and the direct translation into clinical practice.
Collapse
Affiliation(s)
- I Márquez-Rodas
- Servicio de Oncología Médica, Hospital General Universitario Gregorio Marañón, Universidad Complutense, Madrid, Spain.
| | | | | | | | | |
Collapse
|
18
|
Umansky V, Sevko A. Overcoming immunosuppression in the melanoma microenvironment induced by chronic inflammation. Cancer Immunol Immunother 2012; 61:275-282. [PMID: 22120757 PMCID: PMC11028817 DOI: 10.1007/s00262-011-1164-6] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2011] [Accepted: 11/12/2011] [Indexed: 02/07/2023]
Abstract
Malignant melanoma is known by its rapid progression and poor response to currently applied treatments. Despite the well-documented melanoma immunogenicity, the results of immunotherapeutic clinical trials are not satisfactory. This poor antitumor reactivity is due to the development of chronic inflammation in the tumor microenvironment characterized by infiltrating leukocytes and soluble mediators, which lead to an immunosuppression associated with cancer progression. Using the ret transgenic mouse melanoma model that closely resembles human melanoma, we demonstrated increased levels of chronic inflammatory factors in skin tumors and metastatic lymph nodes, which correlated with tumor progression. Furthermore, Gr1(+)CD11b(+) myeloid-derived suppressor cells (MDSC), known to block tumor-reactive T cells, were enriched in melanoma lesions and showed an enhanced immunosuppressive capacity. This MDSC accumulation was associated with a strong TCR ζ-chain downregulation in T cells suggesting that the tumor inflammatory microenvironment supports MDSC recruitment and immunosuppressive activity. Indeed, upon administration of phosphodiesterase-5 inhibitor sildenafil or paclitaxel in non-cytotoxic doses, we observed reduced levels of chronic inflammatory mediators in association with decreased MDSC amounts and immunosuppressive function. This led to a partial restoration of ζ-chain expression in T cells and to a significantly increased survival of tumor-bearing mice. CD8 T-cell depletion resulted in an abrogation of beneficial outcome of both drugs, suggesting the involvement of MDSC and CD8 T cells in the observed therapeutic effects. Our data imply that inhibition of chronic inflammation in the tumor microenvironment should be applied in conjunction with melanoma immunotherapies to increase their efficacy.
Collapse
Affiliation(s)
- Viktor Umansky
- Skin Cancer Unit (G300), German Cancer Research Center and University Hospital Mannheim, Im Neuenheimer Feld 280, 69120, Heidelberg, Germany.
| | - Alexandra Sevko
- Skin Cancer Unit (G300), German Cancer Research Center and University Hospital Mannheim, Im Neuenheimer Feld 280, 69120, Heidelberg, Germany
| |
Collapse
|
19
|
The immune response to tumors as a tool toward immunotherapy. Clin Dev Immunol 2011; 2011:894704. [PMID: 22190975 PMCID: PMC3235449 DOI: 10.1155/2011/894704] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2011] [Revised: 09/08/2011] [Accepted: 09/20/2011] [Indexed: 11/17/2022]
Abstract
Until recently cancer medical therapy was limited to chemotherapy that could not differentiate cancer cells from normal cells. More recently with the remarkable mushroom of immunology, newer tools became available, resulting in the novel possibility to attack cancer with the specificity of the immune system. Herein we will review some of the recent achievement of immunotherapy in such aggressive cancers as melanoma, prostatic cancer, colorectal carcinoma, and hematologic malignancies. Immunotherapy of tumors has developed several techniques: immune cell transfer, vaccines, immunobiological molecules such as monoclonal antibodies that improve the immune responses to tumors. This can be achieved by blocking pathways limiting the immune response, such as CTLA-4 or Tregs. Immunotherapy may also use cytokines especially proinflammatory cytokines to enhance the activity of cytotoxic T cells (CTLs) derived from tumor infiltrating lymphocytes (TILs). The role of newly discovered cytokines remains to be investigated. Alternatively, an other mechanism consists in enhancing the expression of TAAs on tumor cells. Finally, monoclonal antibodies may be used to target oncogenes.
Collapse
|
20
|
Abstract
Controversy exists as to the role that the immune system plays in cancer therapy. While the immune system has been proposed to scavenge the body to prevent microscopic transformation from forming cancer, it has been difficult to mount its potential of shrinking established tumors. NK cells are components of the innate immune system. They can recognize targets without prior sensitization, making them ideal candidates to manipulate for therapeutic use against cancer. Initially, autologous NK cells were directed against tumors but it was realized that NK cells that recognize self cells are inhibited. More encouraging advances have been made with allogeneic NK cell therapy in clinical trials to overcome this limitation. In this article, we present developments in NK cell adoptive immunotherapy for hematologic and solid tumor malignancies.
Collapse
Affiliation(s)
- Melissa A Geller
- Obstetrics & Gynecology, University of Minnesota, Minneapolis, MN, USA
| | - Jeffrey S Miller
- Obstetrics & Gynecology, University of Minnesota, Minneapolis, MN, USA
| |
Collapse
|
21
|
Enhancement of HLA class II-restricted CD4+ T cell recognition of human melanoma cells following treatment with bryostatin-1. Cell Immunol 2011; 271:392-400. [PMID: 21903207 DOI: 10.1016/j.cellimm.2011.08.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2011] [Revised: 08/11/2011] [Accepted: 08/12/2011] [Indexed: 12/31/2022]
Abstract
The majority of melanoma cells express detectable levels of HLA class II proteins, and an increased threshold of cell surface class II is crucial for the stimulation of CD4+ T cells. Bryostatin-1, a protein kinase C (PKC) activator, has been considered as a potent chemotherapeutic agent in a variety of in vitro tumor models. Little is known about the role of bryostatin-1 in HLA class II Ag presentation and immune activation in malignant tumors, especially in melanoma. In this study, we show that bryostatin-1 treatment enhances CD4+ T cell recognition of melanoma cells in the context of HLA class II molecules. We also show that bryostatin-1 treatment of melanoma cells increases class II protein levels by upregulating the class II transactivator (CIITA) gene. Flow cytometry and confocal microscopic analyses revealed that bryostatin-1 treatment upregulated the expression of costimulatory molecules (CD80 and CD86) in melanoma cells, which could prolong the interaction of immune cells and tumors. Bryostatin-1 also induced cellular differentiation in melanoma cells, and reduced tumorigenic factors such as pro-cathepsins and matrix-metalloproteinase-9. These data suggest that bryostatin-1 could be used as a chemo-immunotherapeutic agent for reducing tumorigenic potential of melanoma cells while enhancing CD4+ T cell recognition to prevent tumor recurrence.
Collapse
|
22
|
Haggerty TJ, Dunn IS, Rose LB, Newton EE, Martin S, Riley JL, Kurnick JT. Topoisomerase inhibitors modulate expression of melanocytic antigens and enhance T cell recognition of tumor cells. Cancer Immunol Immunother 2010; 60:133-44. [PMID: 21052994 DOI: 10.1007/s00262-010-0926-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2010] [Accepted: 10/05/2010] [Indexed: 12/14/2022]
Abstract
While there are many obstacles to immune destruction of autologous tumors, there is mounting evidence that tumor antigen recognition does occur. Unfortunately, immune recognition rarely controls clinically significant tumors. Even the most effective immune response will fail if tumors fail to express target antigens. Importantly, reduced tumor antigen expression often results from changes in gene regulation rather than irrevocable loss of genetic information. Such perturbations are often reversible by specific compounds or biological mediators, prompting a search for agents with improved antigen-enhancing properties. Some recent findings have suggested that certain conventional chemotherapeutic agents may have beneficial properties for cancer treatment beyond their direct cytotoxicities against tumor cells. Accordingly, we screened an important subset of these agents, topoisomerase inhibitors, for their effects on antigen levels in tumor cells. Our analyses demonstrate upregulation of antigen expression in a variety of melanoma cell lines and gliomas in response to nanomolar levels of certain specific topoisomerase inhibitors. To demonstrate the ability of CD8+ T cells to recognize tumors, we assayed cytokine secretion in T cells transfected with T cell receptors directed against Melan-A/MART-1 antigen. Three days of daunorubicin treatment resulted in enhanced antigen expression by tumor cells, in turn inducing co-cultured antigen-specific T cells to secrete Interleukin-2 and Interferon-γ. These results demonstrate that specific topoisomerase inhibitors can augment melanoma antigen production, suggesting that a combination of chemotherapy and immunotherapy may be of potential value in the treatment of otherwise insensitive cancers.
Collapse
|
23
|
Geller MA, Cooley S, Judson PL, Ghebre R, Carson LF, Argenta PA, Jonson AL, Panoskaltsis-Mortari A, Curtsinger J, McKenna D, Dusenbery K, Bliss R, Downs LS, Miller JS. A phase II study of allogeneic natural killer cell therapy to treat patients with recurrent ovarian and breast cancer. Cytotherapy 2010; 13:98-107. [PMID: 20849361 DOI: 10.3109/14653249.2010.515582] [Citation(s) in RCA: 316] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND Natural killer (NK) cells derived from patients with cancer exhibit diminished cytotoxicity compared with NK cells from healthy individuals. We evaluated the tumor response and in vivo expansion of allogeneic NK cells in recurrent ovarian and breast cancer. METHODS Patients underwent a lymphodepleting preparative regimen: fludarabine 25 mg/m(2) × 5 doses, cyclophosphamide 60 mg/kg × 2 doses, and, in seven patients, 200 cGy total body irradiation (TBI) to increase host immune suppression. An NK cell product, from a haplo-identical related donor, was incubated overnight in 1000 U/mL interleukin (IL)-2 prior to infusion. Subcutaneous IL-2 (10 MU) was given three times/week × 6 doses after NK cell infusion to promote expansion, defined as detection of ≥100 donor-derived NK cells/μL blood 14 days after infusion, based on molecular chimerism and flow cytometry. RESULTS Twenty (14 ovarian, 6 breast) patients were enrolled. The median age was 52 (range 30-65) years. Mean NK cell dose was 2.16 × 10(7)cells/kg. Donor DNA was detected 7 days after NK cell infusion in 9/13 (69%) patients without TBI and 6/7 (85%) with TBI. T-regulatory cells (Treg) were elevated at day +14 compared with pre-chemotherapy (P = 0.03). Serum IL-15 levels increased after the preparative regimen (P = <0.001). Patients receiving TBI had delayed hematologic recovery (P = 0.014). One patient who was not evaluable had successful in vivo NK cell expansion. CONCLUSIONS Adoptive transfer of haplo-identical NK cells after lymphodepleting chemotherapy is associated with transient donor chimerism and may be limited by reconstituting recipient Treg cells. Strategies to augment in vivo NK cell persistence and expansion are needed.
Collapse
Affiliation(s)
- Melissa A Geller
- Obstetrics and Gynecology, University of Minnesota, 420 Delaware Street SE, Minneapolis, MN 55455, USA
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
24
|
Whiteside TL. Inhibiting the inhibitors: evaluating agents targeting cancer immunosuppression. Expert Opin Biol Ther 2010; 10:1019-35. [PMID: 20415597 DOI: 10.1517/14712598.2010.482207] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
IMPORTANCE OF THE FIELD Immunotherapy of cancer has not improved disease-free or overall patient survival. The lack of concordance between immunological and clinical responses in cancer immunotherapy trials is thought to result from the pervasive presence of tumor-driven immune suppression that allows tumor to escape and that has not been adequately targeted by current therapies. AREAS COVERED IN THIS REVIEW Because multiple mechanisms of tumor induced suppression have been identified and shown to contribute to tumor escape, the opportunity arises to interfere with these mechanisms. A range of known tumor-derived inhibitors can now be blocked or neutralized by biologic or metabolic agents. Used alone or in combination with each other or with conventional cancer therapies, these agents offer novel therapeutic strategies for the control of tumor escape. WHAT THE READER WILL GAIN This review deals with currently available inhibitors for counteracting tumor immune escape. The restoration of effective anti-tumor immunity in patients with cancer will require new approaches aiming at: i) protection of immune cells from adverse effects of myeloid-derived suppressor cells, regulatory T cells or inhibitory factors thus enhancing effector functions; and ii) prolonging survival of central memory T cells, thus ensuring long-term protection. TAKE HOME MESSAGE Inhibitors of mechanisms responsible for tumor escape could restore anti-tumor immune responses in patients with cancer.
Collapse
Affiliation(s)
- Theresa L Whiteside
- University of Pittsburgh Cancer Institute, Hillman Cancer Center, Pathology, 5117 Centre Avenue, Pittsburgh, 15213 USA.
| |
Collapse
|
25
|
Depletion of endogenous tumor-associated regulatory T cells improves the efficacy of adoptive cytotoxic T-cell immunotherapy in murine acute myeloid leukemia. Blood 2009; 114:3793-802. [PMID: 19724059 DOI: 10.1182/blood-2009-03-208181] [Citation(s) in RCA: 103] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Tumor-induced immune suppression can permit tumor cells to escape host immune resistance. To elucidate host factors contributing to the poor response of adoptively transferred tumor-reactive cytotoxic T lymphocytes (CTLs), we used a systemic model of murine acute myeloid leukemia (AML). AML progression resulted in a progressive regulatory T-cell (Treg) accumulation in disease sites. The adoptive transfer of in vitro-generated, potently lytic anti-AML-reactive CTLs failed to reduce disease burden or extend survival. Compared with non-AML-bearing hosts, transferred CTLs had reduced proliferation in AML sites of metastases. Treg depletion by a brief course of interleukin-2 diphtheria toxin (IL-2DT) transiently reduced AML disease burden but did not permit long-term survival. In contrast, IL-2DT prevented anti-AML CTL hypoproliferation, increased the number of transferred CTLs at AML disease sites, reduced AML tumor burden, and resulted in long-term survivors that sustained an anti-AML memory response. These data demonstrated that Tregs present at AML disease sites suppress adoptively transferred CTL proliferation, limiting their in vivo expansion, and Treg depletion before CTL transfer can result in therapeutic efficacy in settings of substantial pre-existing tumor burden in which antitumor reactive CTL infusion alone has proven ineffective.
Collapse
|