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Abstract
While idiotype vaccines have shown promise for B-cell malignancies, production is cumbersome; thus, targeting a common antigen on malignant B cells using an off-the-shelf approach would provide significant logistical advantages.
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152
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Fredriksen AB, Sandlie I, Bogen B. Targeted DNA vaccines for enhanced induction of idiotype-specific B and T cells. Front Oncol 2012; 2:154. [PMID: 23115759 PMCID: PMC3483591 DOI: 10.3389/fonc.2012.00154] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2012] [Accepted: 10/15/2012] [Indexed: 12/03/2022] Open
Abstract
Background: Idiotypes (Id) are antigenic determinants localized in variable (V) regions of Ig. Id-specific T and B cells (antibodies) play a role in immunotherapy of Id+ tumors. However, vaccine strategies that enhance Id-specific responses are needed. Methods: Id+ single-chain fragment variable (scFv) from multiple myelomas and B cell lymphomas were prepared in a fusion format that bivalently target surface molecules on antigen-presenting cells (APC). APC-specific targeting units were either scFv from APC-specific mAb (anti-MHC II, anti-CD40) or chemokines (MIP-1α, RANTES). Homodimeric Id-vaccines were injected intramuscularly or intradermally as plasmids in mice, combined with electroporation. Results: (i) Transfected cells secreted plasmid-encoded Id+ fusion proteins to extracellular fluid followed by binding of vaccine molecules to APC. (ii) Targeted vaccine molecules increased Id-specific B and T cell responses. (iii) Bivalency and xenogeneic sequences both contributed to enhanced responses. (iv) Targeted Id DNA vaccines induced tumor resistance against challenges with Id+ tumors. (v) Human MIP-1α targeting units enhanced Id-specific responses in mice, due to a cross reaction with murine chemokine receptors. Thus, targeted vaccines designed for humans can be quality tested in mice. (vi) Human Id+ scFv from four multiple myeloma patients were inserted into the vaccine format and were successfully tested in mice. (vii) Human MIP-1α vaccine proteins enhanced human T cell responses in vitro. (viii) A hypothetical model for how the APC-targeted vaccine molecules enhance Id-specific T and B cells is presented. Conclusion: Targeted DNA Id-vaccines show promising results in preclinical studies, paving the way for testing in patients.
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Affiliation(s)
- Agnete B Fredriksen
- Centre for Immune Regulation, Institute of Immunology, University of Oslo and Oslo University Hospital Oslo, Norway
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153
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Lizée G, Overwijk WW, Radvanyi L, Gao J, Sharma P, Hwu P. Harnessing the power of the immune system to target cancer. Annu Rev Med 2012; 64:71-90. [PMID: 23092383 DOI: 10.1146/annurev-med-112311-083918] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
For many years, immunotherapeutic approaches for cancer held more promise than actual clinical benefit for the majority of patients. However, several recent key advances in tumor immunology have now turned the tide in favor of immunotherapy for the treatment of many different cancer types. In this review, we describe four of the most effective immunotherapeutic approaches currently used in the clinic: cancer vaccines, immunostimulatory agents, adoptive T cell therapy, and immune checkpoint blockade. In addition, we discuss some of the most promising future strategies that aim to utilize multiple immunotherapies or combine them with other approaches to more effectively target cancer.
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Affiliation(s)
- Gregory Lizée
- Department of Melanoma Medical Oncology, The Center for Cancer Immunology Research, The University of Texas M. D. Anderson Cancer Center, Houston, Texas 77030, USA
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154
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Almubarak M, Abraham J. Research highlights: highlights from the latest articles in cancer immunotherapy. Immunotherapy 2012; 4:473-5. [PMID: 22642329 DOI: 10.2217/imt.12.30] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Affiliation(s)
- Mohammed Almubarak
- Mary Babb Randolph Cancer Center, West Virginia University, Morgantown, WV 26506-9162, USA
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155
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Abstract
DISEASE OVERVIEW Follicular lymphoma (FL) is generally an indolent B-cell lymphoproliferative disorder of transformed follicular center B cells. FL is characterized by diffuse lymphoadenopathy, involvement of bone marrow, splenomegaly, and less commonly other extranodal sites of involvement. In general, cytopenias can occur but constitutional symptoms of fever, night sweats, and weight loss are uncommon. DIAGNOSIS Diagnosis is based on histology of preferably a biopsy of a lymph node. Immunohistochemical staining is positive in virtually all cases for cell surface CD19, CD20, CD10, and monoclonal immunoglobulin, as well as cytoplasmic expression of bcl-2 protein. The overwhelming majority of cases have the characteristic t(14;18) translocation involving the IgH/bcl-2 genes. RISK STRATIFICATION The FL International Prognostic Index prognostic model for FL uses five independent predictors of inferior survival: age > 60 years, hemoglobin < 12 g/dL, serum lactate dehydrogenase > normal, Ann Arbor stage III/IV, number of involved nodal areas > 4. The presence of 0, 1, 2, and ≥ 3 adverse factors defines low, intermediate, and high-risk disease with median 10-year survivals in the pre-rituximab era of ~71, 51, and 36 months, respectively. With the use of more modern therapies, specifically anti-CD20 monoclonal antibody, the outcome has improved. RISK-ADAPTED THERAPY Observation continues to be adequate for asymptomatic patients with low bulk disease and no cytopenias. For patients needing therapy, most patients are treated with chemotherapy plus rituximab, which has improved response rates, duration of response, and overall survival. Randomized studies have shown additional benefit for maintenance rituximab both following chemotherapy-rituximab and single-agent rituximab. Autologous stem cell transplantation (SCT) has not shown a survival benefit in first remission patients. SCT including both autologous and allogeneic SCT or experimental agent therapy is considered for recurrent disease.
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MESH Headings
- Antibodies, Monoclonal/therapeutic use
- Antibodies, Monoclonal, Murine-Derived/administration & dosage
- Antibodies, Monoclonal, Murine-Derived/therapeutic use
- Antineoplastic Combined Chemotherapy Protocols/administration & dosage
- Antineoplastic Combined Chemotherapy Protocols/therapeutic use
- Biomarkers, Tumor
- Biopsy
- Chromosomes, Human, Pair 14/genetics
- Chromosomes, Human, Pair 14/ultrastructure
- Chromosomes, Human, Pair 18/genetics
- Chromosomes, Human, Pair 18/ultrastructure
- Combined Modality Therapy
- Cyclophosphamide/administration & dosage
- Doxorubicin/administration & dosage
- Genes, Immunoglobulin
- Genes, bcl-2
- Hematopoietic Stem Cell Transplantation
- Humans
- Immunoglobulin Heavy Chains/genetics
- Immunophenotyping
- Lymph Nodes/pathology
- Lymphoma, Follicular/diagnosis
- Lymphoma, Follicular/genetics
- Lymphoma, Follicular/therapy
- Prednisone/administration & dosage
- Prognosis
- Randomized Controlled Trials as Topic
- Remission Induction
- Risk
- Rituximab
- Salvage Therapy
- Translocation, Genetic
- Vaccination
- Vincristine/administration & dosage
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Affiliation(s)
- Arnold Freedman
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA.
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156
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Gao J, Bernatchez C, Sharma P, Radvanyi LG, Hwu P. Advances in the development of cancer immunotherapies. Trends Immunol 2012; 34:90-8. [PMID: 23031830 DOI: 10.1016/j.it.2012.08.004] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2012] [Revised: 08/22/2012] [Accepted: 08/23/2012] [Indexed: 12/31/2022]
Abstract
Manipulating the immune system in order to induce clinically relevant responses against cancer is a longstanding goal. Interventions to enhance tumor-specific immunity through vaccination, sustaining effector T cell activation, or increasing the numbers of tumor-specific T cells using ex vivo expansion, have all resulted in clinical successes. Here, we examine recent clinical advances and major ongoing studies in the field of cancer immunotherapy. Single agents have so far benefited a limited proportion of patients, and future studies combining different types of immunotherapies and other therapeutic modalities, such as drugs against specific signaling pathways driving cancer cell growth, are needed to pave the way for the development of effective anticancer treatments causing durable responses.
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Affiliation(s)
- Jianjun Gao
- Center for Cancer Immunology Research, GU and Melanoma Medical Oncology Department, MD Anderson Cancer Center, Houston, TX 77030, USA
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157
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Petrizzo A, Tornesello ML, Napolitano M, D'Alessio G, Salomone Megna A, Dolcetti R, De Re V, Wang E, Marincola FM, Buonaguro FM, Buonaguro L. Multiparametric analyses of human PBMCs loaded ex vivo with a candidate idiotype vaccine for HCV-related lymphoproliferative disorders. PLoS One 2012; 7:e44870. [PMID: 23028651 PMCID: PMC3445594 DOI: 10.1371/journal.pone.0044870] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2012] [Accepted: 08/07/2012] [Indexed: 12/16/2022] Open
Abstract
Hepatitis C virus (HCV) has been identified as one of the major risk factors for type II mixed cryoglobulinemia (MC), during the clinical evolution of chronic hepatitis, which may lead to development of B cell non-Hodgkin's lymphoma (NHL). We have previously shown that the candidate idiotype vaccine, based on the IGKV3-20 light chain protein, is able to induce activation and maturation of circulating antigen presenting cells (APCs) in both HCV-positive and HCV-negative healthy control subjects, with production of Th2-type cytokines. Here, the effect of the recombinant IGKV3-20 protein on human peripheral blood mononuclear cells (PBMCs) from HCV-positive subjects, with known blood levels of cryoglobulins, is shown via gene expression profiling analysis combined to multiparameter flow cytometry and multiplex analyses of cytokines.
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Affiliation(s)
- Annacarmen Petrizzo
- Laboratory of Molecular Biology and Viral Oncogenesis, National Cancer Institute “Fond. G. Pascale”, Naples, Italy
| | - Maria Lina Tornesello
- Laboratory of Molecular Biology and Viral Oncogenesis, National Cancer Institute “Fond. G. Pascale”, Naples, Italy
| | - Maria Napolitano
- Laboratory of Clinical Immunology, National Cancer Institute “Fond. G. Pascale”, Naples, Italy
| | | | | | - Riccardo Dolcetti
- Cancer Bio-Immunotherapy Unit, Centro di Riferimento Oncologico, National Cancer Institute, Aviano, Italy
| | - Valli De Re
- Experimental and Clinical Pharmacology, Centro di Riferimento Oncologico, National Cancer Institute, Aviano, Italy
| | - Ena Wang
- Infectious Disease and Immunogenetics Section (IDIS), Department of Transfusion Medicine, Clinical Center, and trans-NIH Center for Human Immunology, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Franco M. Marincola
- Infectious Disease and Immunogenetics Section (IDIS), Department of Transfusion Medicine, Clinical Center, and trans-NIH Center for Human Immunology, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Franco M. Buonaguro
- Laboratory of Molecular Biology and Viral Oncogenesis, National Cancer Institute “Fond. G. Pascale”, Naples, Italy
| | - Luigi Buonaguro
- Laboratory of Molecular Biology and Viral Oncogenesis, National Cancer Institute “Fond. G. Pascale”, Naples, Italy
- * E-mail:
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158
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de Cerio ALD, Inogés S, Ai WZ, Villanueva H, Pastor F, Soldevilla MM, Soria E, Bendandi M. Successful idiotypic vaccination following stem cell allotransplant in lymphoma. Leuk Lymphoma 2012; 54:881-4. [DOI: 10.3109/10428194.2012.721544] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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159
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Antitumor T-cell responses contribute to the effects of dasatinib on c-KIT mutant murine mastocytoma and are potentiated by anti-OX40. Blood 2012; 120:4533-43. [PMID: 22936666 DOI: 10.1182/blood-2012-02-407163] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Targeted and immune-based therapies are thought to eradicate cancer cells by different mechanisms, and these approaches could possibly complement each other when used in combination. In this study, we report that the in vivo antitumor effects of the c-KIT inhibitor, dasatinib, on the c-KIT mutant P815 mastocytoma tumor were substantially dependent on T cell-mediated immunity. We found that dasatinib treatment significantly decreased levels of Tregs while specifically enhancing tumor antigen-specific T-cell responses. We sought to further enhance this therapy with the addition of anti-OX40 antibody, which is known to provide a potent costimulatory signal to T cells. The combination of dasatinib and anti-OX40 antibody resulted in substantially better therapeutic efficacy compared with either drug alone, and this was associated with enhanced accumulation of tumor antigen-specific T cells in the tumor microenvironment. Furthermore, the combination regimen inhibited the function of Tregs and also resulted in significantly up-regulated expression of the IFN-γ-induced chemokines CXCL9, 10, and 11 in the tumor microenvironment, which provides a feasible mechanism for the enhanced intratumoral CTL infiltration. These studies delineate a strategy by which targeted therapy and immunotherapy may be combined to achieve superior antitumor responses in cancer patients.
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160
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A vaccine directed to B cells and produced by cell-free protein synthesis generates potent antilymphoma immunity. Proc Natl Acad Sci U S A 2012; 109:14526-31. [PMID: 22875703 DOI: 10.1073/pnas.1211018109] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Clinical studies of idiotype (Id) vaccination in patients with lymphoma have established a correlation between the induced anti-Id antibody responses and favorable clinical outcomes. To streamline the production of an Id vaccine, we engineered a small diabody (Db) molecule containing both a B-cell-targeting moiety (anti-CD19) and a lymphoma Id. This molecule (αCD19-Id) was designed to penetrate lymph nodes and bind to noncognate B cells to form an antigen presentation array. Indeed, the αCD19-Id molecule accumulated on B cells in vivo after s.c. administration. These noncognate B cells, decorated with the diabody, could then stimulate the more rare Id-specific B cells. Peptide epitopes present in the diabody linker augmented the response by activating CD4(+) helper T cells. Consequently, the αCD19-Id molecule induced a robust Id-specific antibody response and protected animals from tumor challenge. Such diabodies are produced in a cell-free protein expression system within hours of amplification of the specific Ig genes from the B-cell tumor. This customized product can now be available to vaccinate patients before they receive other, potentially immunosuppressive, therapies.
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161
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Hanala S. The new ParaDIgm: IgM from bench to clinic: November 15-16, 2011, Frankfurt, Germany. MAbs 2012; 4:555-61. [PMID: 22864407 PMCID: PMC3499295 DOI: 10.4161/mabs.21449] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
The inaugural IgM event entitled "The new ParaDIgm: IgM from bench to clinic" brought together the increasingly active and growing IgM antibody community to discuss recent advances and challenges facing the discovery and development of IgM antibody therapies and technologies. Researchers, clinicians and biomanufacturing experts delivered 21 talks on the basic science and isolation of IgM, upstream and downstream development, and formulation and clinical development of the molecules. Participants networked around topics aimed at exploring the full potential of IgM antibodies. The meeting was held at DECHEMA Gesellschaft für Chemische Technik und Biotechnologie e. V. (Society for Chemical Engineering and Biotechnology), a non-profit scientific and technical society based in Frankfurt am Main, Germany. The meeting was sponsored by Patrys, Laureate Biopharma, Bio-Rad Laboratories, BIA Separations, Percivia and the Bio Affinity Company (BAC). The second New ParaDIgm: IgM from bench to clinic meeting, will be held on April 23-24, 2013 in Frankfurt, Germany.
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162
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Bleakley M, Turtle CJ, Riddell SR. Augmentation of anti-tumor immunity by adoptive T-cell transfer after allogeneic hematopoietic stem cell transplantation. Expert Rev Hematol 2012; 5:409-25. [PMID: 22992235 PMCID: PMC3590108 DOI: 10.1586/ehm.12.28] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Allogeneic hematopoietic stem cell transplantation (HCT) is currently the standard of care for most patients with high-risk acute leukemias and some other hematologic malignancies. Although HCT can be curative, many patients who undergo allogeneic HCT will later relapse. There is, therefore, a critical need for the development of novel post-HCT therapies for patients who are at high risk for disease recurrence following HCT. One potentially efficacious approach is adoptive T-cell immunotherapy, which is currently undergoing a renaissance that has been inspired by scientific insight into the key issues that impeded its previous clinical application. Translation of the next generation of adoptive T-cell therapies to the allogeneic HCT setting, using donor T cells of defined specificity and function, presents a unique set of challenges and opportunities. The challenges, progress and future of adoptive T-cell therapy following allogeneic HCT are discussed in this review.
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Affiliation(s)
- Marie Bleakley
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA.
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163
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Multipeptide immune response to cancer vaccine IMA901 after single-dose cyclophosphamide associates with longer patient survival. Nat Med 2012; 18:1254-61. [PMID: 22842478 DOI: 10.1038/nm.2883] [Citation(s) in RCA: 607] [Impact Index Per Article: 50.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2012] [Accepted: 06/20/2012] [Indexed: 12/13/2022]
Abstract
IMA901 is the first therapeutic vaccine for renal cell cancer (RCC) consisting of multiple tumor-associated peptides (TUMAPs) confirmed to be naturally presented in human cancer tissue. We treated a total of 96 human leukocyte antigen A (HLA-A)*02(+) subjects with advanced RCC with IMA901 in two consecutive studies. In the phase 1 study, the T cell responses of the patients to multiple TUMAPs were associated with better disease control and lower numbers of prevaccine forkhead box P3 (FOXP3)(+) regulatory T (T(reg)) cells. The randomized phase 2 trial showed that a single dose of cyclophosphamide reduced the number of T(reg) cells and confirmed that immune responses to multiple TUMAPs were associated with longer overall survival. Furthermore, among six predefined populations of myeloid-derived suppressor cells, two were prognostic for overall survival, and among over 300 serum biomarkers, we identified apolipoprotein A-I (APOA1) and chemokine (C-C motif) ligand 17 (CCL17) as being predictive for both immune response to IMA901 and overall survival. A randomized phase 3 study to determine the clinical benefit of treatment with IMA901 is ongoing.
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164
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Thomas SK, Kwak LW. Lymphoma vaccine therapy: next steps after a positive, controlled phase III clinical trial. Semin Oncol 2012; 39:253-62. [PMID: 22595048 DOI: 10.1053/j.seminoncol.2012.02.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Many of the efforts toward developing vaccines against human malignancies have been frustrated by the lack of identification of a tumor-specific antigen that would allow tumor cells to be distinguished from normal cells. Idiotypic determinants of the surface immunoglobulin (Ig) associated with a given patient's B-cell lymphoma are unique to that tumor, and can thus serve as a tumor-specific marker. When conjugated to the immune carrier keyhole limpet hemocyanin (KLH), vaccination with an idiotype protein vaccine has been able to improve length of freedom from disease relapse in patients with follicular lymphoma (FL) in a minimal residual disease (MRD) state after induction therapy, as demonstrated in a recent randomized, controlled phase III trial. In addition to predictive biomarker discovery, using residual autologous tumor and blood samples from patients vaccinated on the phase III trial, we have now developed a next generation idiotype DNA vaccine with the goal of reducing vaccine production time while maintaining efficacy. A first-in-human study is planned to evaluate its use in patients with asymptomatic phase lymphoplasmacytic lymphoma.
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Affiliation(s)
- Sheeba K Thomas
- Department of Lymphoma & Myeloma, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.
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165
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Kono K, Iinuma H, Akutsu Y, Tanaka H, Hayashi N, Uchikado Y, Noguchi T, Fujii H, Okinaka K, Fukushima R, Matsubara H, Ohira M, Baba H, Natsugoe S, Kitano S, Takeda K, Yoshida K, Tsunoda T, Nakamura Y. Multicenter, phase II clinical trial of cancer vaccination for advanced esophageal cancer with three peptides derived from novel cancer-testis antigens. J Transl Med 2012; 10:141. [PMID: 22776426 PMCID: PMC3403921 DOI: 10.1186/1479-5876-10-141] [Citation(s) in RCA: 107] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2012] [Accepted: 07/09/2012] [Indexed: 01/07/2023] Open
Abstract
Background Since a phase I clinical trial using three HLA-A24-binding peptides from TTK protein kinase (TTK), lymphocyte antigen-6 complex locus K (LY6K), and insulin-like growth factor-II mRNA binding protein-3 (IMP3) had been shown to be promising for esophageal squamous cell carcinoma (ESCC), we further performed a multicenter, non-randomized phase II clinical trial. Patients and methods Sixty ESCC patients were enrolled to evaluate OS, PFS, immunological response employing ELISPOT and pentamer assays. Each of the three peptides was administered with IFA weekly. All patients received the vaccination without knowing an HLA-A type, and the HLA types were key-opened at the analysis point. Hence, the endpoints were set to evaluate differences between HLA-A*2402-positive (24(+)) and -negative (24(−)) groups. Results The OS in the 24 (+) group (n = 35) tended to be better than that in the 24(−) group (n = 25) (MST 4.6 vs. 2.6 month, respectively, p = 0.121), although the difference was not statistically significant. However, the PFS in the 24(+) group was significantly better than that in the 24(−) group (p = 0.032). In the 24(+) group, ELISPOT assay indicated that the LY6K-, TTK-, and IMP3-specific CTL responses were observed after the vaccination in 63%, 45%, and 60% of the 24(+) group, respectively. The patients having LY6K-, TTK-, and IMP3-specific CTL responses revealed the better OS than those not having CTL induction, respectively. The patients showing the CTL induction for multiple peptides have better clinical responses. Conclusions The immune response induced by the vaccination could make the prognosis better for advanced ESCC patients. Trial registration ClinicalTrials.gov, number NCT00995358
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Affiliation(s)
- Koji Kono
- First Department of Surgery, University of Yamanashi, Yamanashi, Japan.
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166
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Neoantigen and tumor antigen-specific immunity transferred from immunized donors is detectable early after allogeneic transplantation in myeloma patients. Bone Marrow Transplant 2012; 48:269-77. [PMID: 22773122 PMCID: PMC3469751 DOI: 10.1038/bmt.2012.132] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
To enhance the therapeutic index of allogeneic hematopoietic SCT (HSCT), we immunized 10 HLA-matched sibling donors before stem cell collection with recipient-derived clonal myeloma Ig, idiotype (Id), as a tumor antigen, conjugated with keyhole limpet hemocyanin (KLH). Vaccinations were safe in donors and recipients. Donor-derived KLH- and Id-specific humoral and central and effector memory T-cell responses were detectable by day 30 after HSCT and were boosted by post-transplant vaccinations at 3 months in most recipients. One patient died before booster vaccinations. Specifically, after completing treatment, 8/9 myeloma recipients had persistent Id-specific immune responses and 5/9 had improvement in disease status. Although regulatory T cells increased after vaccination, they did not impact immune responses. At a median potential follow-up period of 74 months, 6 patients are alive, the 10 patients have a median PFS of 28.5 months and median OS has not been reached. Our results provide proof of principle that neoantigen and tumor antigen-specific humoral and cellular immunity could be safely induced in HSCT donors and passively transferred to recipients. This general strategy may be used to reduce relapse of malignancies and augment protection against infections after allogeneic HSCT.
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167
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Bae J, Smith R, Daley J, Mimura N, Tai YT, Anderson KC, Munshi NC. Myeloma-specific multiple peptides able to generate cytotoxic T lymphocytes: a potential therapeutic application in multiple myeloma and other plasma cell disorders. Clin Cancer Res 2012; 18:4850-60. [PMID: 22753586 DOI: 10.1158/1078-0432.ccr-11-2776] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
PURPOSE The efficacy of peptide vaccines may be enhanced by stimulating immune cells with multiple peptides derived from distinct tumor-associated antigens. We have evaluated the heteroclitic XBP1-US(184-192) (YISPWILAV), heteroclitic XBP1-SP(367-375) (YLFPQLISV), native CD138(260-268) (GLVGLIFAV), and native CS1(239-247) (SLFVLGLFL) peptides, which have strong HLA-A2 affinity and immunogenicity in combination, for their ability to elicit multiple myeloma antigen-specific responses. EXPERIMENTAL DESIGN Multipeptide-specific cytotoxic T lymphocytes (MP-CTL) were generated by the stimulation of CD3(+) T lymphocytes from HLA-A2(+) individuals with either autologous mature dendritic cells or T2 cells pulsed with a cocktail of these four peptides. RESULTS The peptide cocktail did not compromise tumor antigen-specific activity of CTLs. MP-CTLs displayed increased total, effector memory (CCR7(-)CD45RO(+)), and activated (CD69(+)) CD3(+)CD8(+) T lymphocytes. In addition, MP-CTL showed IFN-γ production, cell proliferation, and cytotoxicity against HLA-A2(+) multiple myeloma cells, including cells of HLA-A2(+) patients with multiple myeloma. Importantly, MP-CTLs showed specific responses in functional assays to each relevant peptide but not to an irrelevant HLA-A2-specific CMV pp65 (NLVPMVATV) peptide. CONCLUSIONS These results highlight the potential therapeutic application of vaccination with a cocktail of HLA-A2-specific peptides to induce CTLs with a broad spectrum of immune responses against multiple myeloma antigens.
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Affiliation(s)
- Jooeun Bae
- Dana-Farber Cancer Institute, 450 Brookline Avenue, Boston, MA 02115, USA
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168
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Martorelli D, Guidoboni M, De Re V, Muraro E, Turrini R, Merlo A, Pasini E, Caggiari L, Romagnoli L, Spina M, Mortarini R, Gasparotto D, Mazzucato M, Carbone A, Rosato A, Anichini A, Dolcetti R. IGKV3 proteins as candidate "off-the-shelf" vaccines for kappa-light chain-restricted B-cell non-Hodgkin lymphomas. Clin Cancer Res 2012; 18:4080-91. [PMID: 22705988 DOI: 10.1158/1078-0432.ccr-12-0763] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE An increasing set of B-cell non-Hodgkin lymphomas (B-NHL) show a biased usage of IGKV3-20 and IGKV3-15 immunoglobulin genes, a feature that could be exploited for the development of ready-to-use, broadly applicable cancer vaccines. EXPERIMENTAL DESIGN The immunogenic properties of clonal IGKV3-20 and IGKV3-15 proteins were analyzed with particular focus on their ability to elicit cross-reactive responses against molecularly related IGKV proteins expressed by different B-cell lymphoproliferative disorders. RESULTS IGK+ lymphoma patients show humoral and T-cell responses to IGKV3-20 and IGKV3-15 proteins and IGKV3-specific cytotoxic T lymphocytes (CTL) can be easily induced ex vivo. IGKV3-20-specific CTLs cross-react against different IGKV3 proteins, an effect mediated by the presence of 21 shared, sometimes promiscuous, T-cell epitopes, presented by common HLA class I allele products, thus assuring a broad HLA coverage of IGKV3-based vaccines. Many natural epitope variants are carried by IGK light chains expressed by a broad spectrum of B-NHLs and we show that IGKV3-20-specific CTLs cross-react also against several of these variant epitopes. Both humoral and CTL-specific responses were induced by KLH-conjugated IGKV3-20 protein in HLA-A2-transgenic mice and coinjection of IGKV3-20-specific CTLs with IGKV3-20+ or IGKV3-15+ lymphoma cells into SCID mice totally prevented tumor growth, thus confirming the ability of these effectors to mediate efficient and cross-reactive cytotoxic responses also in vivo. CONCLUSIONS These results provide the rationale to exploit IGKV3 proteins as "off-the-shelf" vaccines for a large fraction of lymphoma patients.
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MESH Headings
- Adult
- Aged
- Amino Acid Sequence
- Animals
- Cancer Vaccines/administration & dosage
- Cancer Vaccines/immunology
- Cell Line, Tumor
- Cross Reactions/immunology
- Enzyme-Linked Immunosorbent Assay
- Epitopes, T-Lymphocyte/immunology
- Female
- Flow Cytometry
- HLA Antigens/genetics
- HLA Antigens/immunology
- HLA-A2 Antigen/genetics
- HLA-A2 Antigen/immunology
- Humans
- Immunity, Humoral/immunology
- Immunoglobulin kappa-Chains/immunology
- Lymphoma, B-Cell/immunology
- Lymphoma, B-Cell/pathology
- Lymphoma, B-Cell/therapy
- Male
- Mice
- Mice, SCID
- Mice, Transgenic
- Middle Aged
- T-Lymphocytes/immunology
- T-Lymphocytes/metabolism
- T-Lymphocytes, Cytotoxic/immunology
- T-Lymphocytes, Cytotoxic/metabolism
- T-Lymphocytes, Cytotoxic/transplantation
- Xenograft Model Antitumor Assays
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Affiliation(s)
- Debora Martorelli
- Cancer Bio-Immunotherapy Unit, IRCCS-National Cancer Institute, Aviano, Italy
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169
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Martorelli D, Coppotelli G, Muraro E, Dolcetti R, Masucci MG. Remodeling of the epitope repertoire of a candidate idiotype vaccine by targeting to lysosomal degradation in dendritic cells. Cancer Immunol Immunother 2012; 61:881-92. [PMID: 22089857 PMCID: PMC11028998 DOI: 10.1007/s00262-011-1157-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2011] [Accepted: 11/03/2011] [Indexed: 02/05/2023]
Abstract
The generation of efficacious vaccines against self-antigens expressed in tumor cells requires breakage of tolerance, and the refocusing of immune responses toward epitopes for which tolerance may not be established. While the presentation of tumor antigens by mature dendritic cells (mDC) may surpass tolerance, broadening of the antigenic repertoire remains an issue. We report that fusion of the candidate idiotype vaccine IGKV3-20 to the Gly-Ala repeat (GAr) of the Epstein-Barr virus nuclear antigen (EBNA)-1 inhibits degradation by the proteasome and redirects processing to the lysosome. mDCs transduced with a recombinant lentivirus encoding the chimeric idiotype efficiently primed CD4+ and CD8+ cytotoxic T-cell (CTL) responses that lysed autologous blasts expressing IGKV3-20 or pulsed with IGKV3-20 synthetic peptides, and HLA-matched IGKV3-20-positive tumor cell lines. Comparison of the cytotoxic response of CD4+ and CD8+ T lymphocytes activated by mDCs expressing the wild-type or chimeric IGKV3-20 reveled largely non-overlapping epitope repertoires in both CD4+ and CD8+ effectors. Thus, fusion to the GAr may provide an effective means to broaden the immune response to an endogenous protein by promoting the presentation of antigenic epitopes that require a lysosome-dependent processing step.
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Affiliation(s)
- Debora Martorelli
- Cancer Bio-immunotherapy Unit, Centro di Riferimento Oncologico, National Cancer Institute, Aviano, Italy
| | - Giuseppe Coppotelli
- Department of Cell and Molecular Biology, Karolinska Institute, Box 285, SE-171 77 Stockholm, Sweden
| | - Elena Muraro
- Cancer Bio-immunotherapy Unit, Centro di Riferimento Oncologico, National Cancer Institute, Aviano, Italy
| | - Riccardo Dolcetti
- Cancer Bio-immunotherapy Unit, Centro di Riferimento Oncologico, National Cancer Institute, Aviano, Italy
| | - Maria G. Masucci
- Department of Cell and Molecular Biology, Karolinska Institute, Box 285, SE-171 77 Stockholm, Sweden
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Abstract
Immunotherapy with therapeutic idiotype vaccines offers promise for treatment of B-cell malignancies. However, identification of novel immunogenic lymphoma-associated antigens that are universally expressed is necessary to overcome the barriers of patient-specific idiotype vaccines. Here, we determined whether T-cell leukemia/lymphoma 1 (TCL1) oncoprotein encoded by the TCL1 gene could be a target for immunotherapy of B-cell malignancies. We show that TCL1 mRNA and protein are selectively expressed in normal B cells but markedly hyperexpressed in multiple human B-cell lymphomas, including follicular lymphoma, chronic lymphocytic leukemia, mantle cell lymphoma, diffuse large B-cell lymphoma, and splenic marginal zone B-cell lymphoma. We demonstrated that TCL1-specific CD8(+) T cells can be generated from HLA-A*0201 (HLA-A2)(+) normal donors and identified TCL1(71-78) (LLPIMWQL) as the minimal epitope recognized by these T cells. More importantly, TCL1(71-78) peptide-specific T cells were present in the peripheral blood and tumor-infiltrating lymphocytes of lymphoma patients, could be expanded in vitro, and lysed autologous tumor cells but not normal B cells in an HLA-A2-restricted manner. Our results suggest that TCL1 is naturally processed and presented on the surface of lymphoma cells for recognition by cytotoxic T cells and can serve as a novel target for development of immunotherapeutic strategies against common B-cell lymphomas.
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171
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Martinez Forero I, Okada H, Topalian SL, Gajewski TF, Korman AJ, Melero I. Workshop on immunotherapy combinations. Society for Immunotherapy of Cancer annual meeting Bethesda, November 3, 2011. J Transl Med 2012; 10:108. [PMID: 22640522 PMCID: PMC3404934 DOI: 10.1186/1479-5876-10-108] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2012] [Accepted: 05/28/2012] [Indexed: 12/21/2022] Open
Abstract
Although recent FDA approvals on ipilimumab and sipuleucel-T represent major milestones, the ultimate success of immunotherapy approaches will likely benefit from appropriate combinations with other immunotherapeutic and/or non-immunotherapeutic approaches. However, implementation of ideal combinations in the clinic may still face formidable challenges in regulatory, drug-availability and intellectual property aspects. The 2011 SITC annual meeting hosted a workshop on combination immunotherapy to discuss: 1) the most promising combinations found in the laboratory; 2) early success of combination immunotherapy in clinical trials; 3) industry perspectives on combination approaches, and 4) relevant regulatory issues. The integrated theme was how to accelerate the implementation of efficacious combined immunotherapies for cancer patients. Rodent animal models are providing many examples of synergistic combinations that typically include more than two agents. However, mouse and human immunology differ in a significant number of mechanisms and hence we might be missing opportunities peculiar to humans. Nonetheless, incisive animal experimentation with deep mechanistic insight remains the best compass that we can use to guide our paths in combinatorial immunotherapy. Combination immunotherapy clinical trials are already in progress and preliminary results are extremely promising. As a key to translate promising combinations into clinic, real and “perceived” business and regulatory hurdles were debated. A formidable step forward would be to be able to test combinations of investigational agents prior to individual approval. Taking together the FDA and the industrial perspective on combinatorial immunotherapy, the audience was left with the clear message that this is by no means an impossible task. The general perception is that the road ahead of us is full of combination clinical trials which hopefully will bring clinical benefit to our cancer patients at a fast pace.
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Affiliation(s)
- Ivan Martinez Forero
- Centro de Investigacion Medica Aplicada, Universidad de Navarra, Avda Pio XII, 55, 31008 Pamplona, Spain
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172
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Abstract
There is much renewed activity in the testing of vaccines that target metastatic melanoma, driven by successes in other areas, most notably prostate cancer. Yet, sound evidence that any stand-alone vaccination approach has clinical benefit against melanoma remains lacking. With phase III studies showing no efficacy of promising whole-cell vaccines and heat shock proteins, peptide and dendritic cell vaccines remain the most common approaches. A major obstacle to progress is the lack of any surrogate measures in phase II studies that associate meaningfully with clinical benefit, and this is further complicated by phase III evidence in prostate cancer that immunologic monitoring, tumor response rates, or even times to tumor progression may not accurately predict survival benefit. The area with the most progress has been in combining vaccines with other systemic immunostimulatory agents. Although no vaccine has been found which fulfills the prediction from murine models that they can enhance the efficacy of ipilimumab, combining a peptide vaccination with high-dose interleukin 2 was shown to enhance complete and overall response rates compared with interleukin 2 alone. These promising combinations continue to struggle with the same unresolved issues that have plagued melanoma vaccines from the beginning-what are the best antigens to target, what are the best methods of vaccination, and what constitutes a sufficient immune response to be of value? Virtually no progress has been made toward answering these questions.
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173
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Schlom J. Therapeutic cancer vaccines: current status and moving forward. J Natl Cancer Inst 2012; 104:599-613. [PMID: 22395641 DOI: 10.1093/jnci/djs033] [Citation(s) in RCA: 204] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Concurrent with U.S. Food and Drug Administration (FDA) approval of the first therapeutic cancer vaccine, a wide spectrum of other cancer vaccine platforms that target a diverse range of tumor-associated antigens is currently being evaluated in randomized phase II and phase III trials. The profound influence of the tumor microenvironment and other immunosuppressive entities, however, can limit the effectiveness of these vaccines. Numerous strategies are currently being evaluated both preclinically and clinically to counteract these immunosuppressive entities, including the combined use of vaccines with immune checkpoint inhibitors, certain chemotherapeutics, small-molecule targeted therapies, and radiation. The potential influence of the appropriate patient population and clinical trial endpoint in vaccine therapy studies is discussed, as well as the potential importance of biomarkers in future directions of this field.
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Affiliation(s)
- Jeffrey Schlom
- Laboratory of Tumor Immunology and Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, 10 Center Dr, Rm 8B09, Bethesda, MD 20892, USA.
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174
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Abstract
Follicular lymphoma (FL) is a B-cell tumor arising in germinal centers and retaining features of its normal B-cell counterpart. Lymphomagenesis appears stepwise from the t(14;18) translocation, through FL-like cells, to FL in situ, then to overt FL. Surface Ig is mandatory and carries a striking V-region modification because of introduction of glycan addition sites during somatic mutation. These are positively selected and acquire unusual high mannoses, which interact with lectins. The Ig-associated mannoses appear essential for FL, providing a disease- specific target for antibody attack. Antibody therapy is currently focused on anti-CD20 (rituximab), which appears to rely predominantly on the Fcγ module recruiting suitably activated macrophages. Immunogloblulin and, to some extent, CD20, can each escape antibody attack in vitro by modulation, but this is difficult to demonstrate clinically. Instead, studies of anti-CD20 therapy of FL suggest that effector modulation, similar to that seen in the suppression of autoimmune inflammation by infusions of normal human IgG, may be important. Both antigenic and effector modulations might be minimized by repeated small doses of more potent antibodies. Clearly, mechanisms of attack vary with the malignancy, the target molecule, and the antibody design, offering opportunities for optimizing this promising strategy.
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175
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Hollander N. Immunotherapy for B-cell lymphoma: current status and prospective advances. Front Immunol 2012; 3:3. [PMID: 22566889 PMCID: PMC3342070 DOI: 10.3389/fimmu.2012.00003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2011] [Accepted: 01/05/2012] [Indexed: 11/13/2022] Open
Abstract
Therapy for non-Hodgkin's lymphoma has progressed significantly over the last decades. However, the majority of patients remain incurable, and novel therapies are needed. Because immunotherapy ideally offers target selectivity, an ever increasing number of immunotherapies, both passive and active, are undergoing development. The champion of passive immunotherapy to date is the anti-CD20 monoclonal antibody rituximab that revolutionized the standard of care for lymphoma. The great success of rituximab catalyzed the development of new passive immunotherapy strategies that are currently undergoing clinical evaluation. These include improvement of rituximab efficacy, newer generation anti-CD20 antibodies, drug-conjugated and radio labeled anti-CD20 antibodies, monoclonal antibodies targeting non-CD20 lymphoma antigens, and bispecific antibodies. Active immunotherapy aims at inducing long-lasting antitumor immunity, thereby limiting the likelihood of relapse. Current clinical studies of active immunotherapy for lymphoma consist largely of vaccination and immune checkpoint blockade. A variety of protein- and cell-based vaccines are being tested in ongoing clinical studies. Recently completed phase III clinical trials of an idiotype protein vaccine suggest that the vaccine may have clinical activity in a subset of patients. Efforts to enhance the efficacy of active immunotherapy are ongoing with an emphasis on optimization of antigen delivery and presentation of vaccines and modulation of the immune system toward counteracting immunosuppression, using antibodies against immune regulatory checkpoints. This article discusses results of the various immunotherapy approaches applied to date for B-cell lymphoma and the ongoing trials to improve their effect.
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Affiliation(s)
- Nurit Hollander
- Department of Clinical Microbiology and Immunology, Tel Aviv UniversityTel Aviv, Israel
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176
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Affiliation(s)
- Jeffrey Schlom
- Laboratory of Tumor Immunology and Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA.
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177
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Conjugation of lymphoma idiotype to CD40 antibody enhances lymphoma vaccine immunogenicity and antitumor effects in mice. Blood 2012; 119:2056-65. [PMID: 22234700 DOI: 10.1182/blood-2011-05-355461] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Personalized immunotherapy of lymphoma based on tumor idiotype (Id) has shown anti-idiotype humoral immune responses in 40%-50% and cellular immune responses in 50%-75% of follicular lymphoma patients, indicating that this therapy can be clinically successful. We have developed a novel vaccine against lymphoma consisting of an anti-CD40 Ab (ADX40) chemically conjugated to the tumor idiotype A20 and tested it in a murine lymphoma model. BALB/c mice were immunized with 2 doses of immunogen alone or in conjunction with additional adjuvants before tumor challenge. ADX40-Id vaccination resulted in significantly retarded tumor growth and reduced mouse morbidity. Moreover, similar mouse survival was obtained with 2 injections of ADX40-Id as with 8 injections using the standard therapy of keyhole limpet hemocyanin Id + GM-CSF. Co-administration of ADX40-Id with 3-O-deacyl-4'-monophosphoryl lipid A further significantly enhanced vaccine efficacy, resulting in an increased overall survival. Anti-Id-specific Abs were detected at elevated levels after ADX40-Id immunization; however, in vivo depletion of CD4 and/or CD8 T cells before challenge showed that CD8 effector T cells were the major mediators of tumor protection. The results of the present study show that the ADX40-Id conjugate vaccine is a potential candidate as a stand-alone vaccine or in combination with currently licensed adjuvants for lymphoma immunotherapy.
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178
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Cancer genome sequencing and its implications for personalized cancer vaccines. Cancers (Basel) 2011; 3:4191-211. [PMID: 24213133 PMCID: PMC3763418 DOI: 10.3390/cancers3044191] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2011] [Revised: 10/31/2011] [Accepted: 11/09/2011] [Indexed: 12/31/2022] Open
Abstract
New DNA sequencing platforms have revolutionized human genome sequencing. The dramatic advances in genome sequencing technologies predict that the $1,000 genome will become a reality within the next few years. Applied to cancer, the availability of cancer genome sequences permits real-time decision-making with the potential to affect diagnosis, prognosis, and treatment, and has opened the door towards personalized medicine. A promising strategy is the identification of mutated tumor antigens, and the design of personalized cancer vaccines. Supporting this notion are preliminary analyses of the epitope landscape in breast cancer suggesting that individual tumors express significant numbers of novel antigens to the immune system that can be specifically targeted through cancer vaccines.
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179
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Abstract
After several decades of research, recent successful phase III controlled clinical trials have renewed enthusiasm for vaccine treatment of cancer. This perspective on the report by Berta and colleagues in this issue of the journal (beginning on page 994) discusses the potential prevention of oral cancer through vaccine strategies and, in the broader context, ideal characteristics of tumor antigens as candidates for vaccines for both treating and preventing cancer, potential primary and secondary prevention settings for vaccines, desirable types of immune effectors induced by vaccines, and safety.
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Affiliation(s)
- Larry W Kwak
- Department of Lymphoma and Myeloma, University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Unit 429, Houston, TX 77030, USA.
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180
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Schuster SJ, Neelapu SS, Santos CF, Popa-McKiver MA, McCord AM, Kwak LW. Idiotype vaccination as consolidation therapy: time for integration into standard of care for follicular lymphoma? J Clin Oncol 2011; 29:4845-6. [PMID: 22042953 DOI: 10.1200/jco.2011.38.6094] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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181
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Tartour E, Sandoval F, Bonnefoy JY, Fridman WH. [Cancer immunotherapy: recent breakthroughs and perspectives]. Med Sci (Paris) 2011; 27:833-41. [PMID: 22027420 DOI: 10.1051/medsci/20112710011] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Immunotherapy of cancer has long been considered as an attractive therapeutic approach but with no impact on clinical practice. Two clinical protocols of immunotherapy, one based on a cancer vaccine in patients with prostate cancer or melanoma and the other using an immunomodulator targeting T cells (anti-CTLA4 mAb) in melanoma patients, have demonstrated clinical efficacy in two phase III clinical trials. To improve these encouraging clinical results, biomarkers to better select patients which may benefit from this therapy are actively searched. In addition, immunosuppression associated with cancer has to be overcome to allow a better immunostimulation. In contrast to chemotherapy, clinical variables to monitor the efficacy of immunotherapy has to be revisited and overall survival appears to be a better endpoint than clinical response defined by the RECIST criteria. Combination of immunotherapy with conventional treatments (chemotherapy, anti-angiogenic, etc.) should further improve this approach both in its effectiveness and in its clinical indications.
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Affiliation(s)
- Eric Tartour
- Université Paris Descartes, Sorbonne Paris Cité, Paris, France.
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182
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Weng J, Cha SC, Matsueda S, Alatrash G, Popescu MS, Yi Q, Molldrem JJ, Wang M, Neelapu SS, Kwak LW. Targeting human B-cell malignancies through Ig light chain-specific cytotoxic T lymphocytes. Clin Cancer Res 2011; 17:5945-52. [PMID: 21813633 DOI: 10.1158/1078-0432.ccr-11-0970] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE The variable regions of Ig (idiotype, Id) expressed by malignant B cells can be used as tumor-specific antigens that induce humoral and cellular immunity. However, epitopes derived from Id that stimulate human CD8(+) T-cell immunity are incompletely characterized. EXPERIMENTAL DESIGN The clonal Ig V(L) of human myeloma cell line U266 and five primary B-cell tumors were sequenced, and peptides corresponding to the Ig V(L) region were tested for their ability to stimulate CTLs from 10 HLA-A*0201-positive normal donors. The CTLs thus generated were tested against peptide-pulsed T2 cells and autologous tumor cells. RESULTS Fourteen peptides derived from Ig light chain (V(L)) of U266 and primary B-cell tumors were used to generate 68 CTLs lines that specifically produced IFN-γ when cocultured with peptide-pulsed T2 cells. These CTLs lysed peptide-pulsed T2 cell as well as U266 or autologous tumor targets in an HLA class I-dependent manner. Sequence analysis revealed shared V(L) T-cell epitopes in U266 and primary B-cell tumors, not previously reported within Ig heavy chain (V(H)) sequences. CONCLUSION This study thus identifies novel immunogenic CTLs epitopes from Id V(L), suggests that they are naturally presented on the surface of B-cell malignancies, and supports their inclusion in next-generation Id vaccines. The ability to prime T cells derived from normal HLA-matched donors, rather than patients, may also have direct application to current strategies, designed to generate allogeneic tumor-specific T cells for adoptive transfer.
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Affiliation(s)
- Jinsheng Weng
- Department of Lymphoma and Myeloma, Stem Cell Transplantation and Cellular Therapy, and Center for Cancer Immunology Research, MD Anderson Cancer Center, Houston, Texas, USA
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183
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Industry Update: The latest developments in therapeutic delivery. Ther Deliv 2011. [DOI: 10.4155/tde.11.89] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The present Industry Update covers the period 16 May to 15 June 2011, with information sourced from company press releases, media newswires, regulatory agencies and relevant patent offices. This period was dominated to a significant extent by events taking place at the 47th Annual Meeting of the American Society of Clinical Oncology held on 3–7 June in Chicago (IL, USA) where results from some of the larger studies were published concomitantly in The New England Journal of Medicine. Notable amongst these were the positive results of the Roche Phase III BRIM3 study on vemurafenib subjects with BRAF V600 mutation-positive metastatic melanoma. The announcement that Roche and Bristol-Myers Squibb have entered into an agreement to evaluate Yervoy™, currently the only CTLA-4 inhibitor approved for metastatic melanoma, in combination with vemurafenib is further good news. In terms of journal publications, an exceptional study led by researchers at The University of Texas MD Anderson Cancer Center (TX, USA) was published in the Journal of Clinical Oncology, in which a lymphoma vaccine, uniquely tailored for each patient, was shown to extend disease-free survival by 14 months, with signs of an even better response for patients with a specific biological marker.
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185
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Translational development of vaccination strategies in follicular NHL. Best Pract Res Clin Haematol 2011; 24:295-304. [DOI: 10.1016/j.beha.2011.03.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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186
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Ansell SM, Suman VJ. Identifying patients with follicular lymphoma who are likely to benefit from an idiotype vaccine. J Clin Oncol 2011; 29:2748-9. [PMID: 21632499 DOI: 10.1200/jco.2011.35.8812] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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187
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Rezvani K. Posttransplantation vaccination: concepts today and on the horizon. HEMATOLOGY. AMERICAN SOCIETY OF HEMATOLOGY. EDUCATION PROGRAM 2011; 2011:299-304. [PMID: 22160049 DOI: 10.1182/asheducation-2011.1.299] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Allogeneic hematopoietic stem cell transplantation (allogeneic HSCT) remains a curative treatment for hematological malignancies resistant to other treatment approaches through the unique GVL effect. However, relapse remains a major cause of treatment failure after allogeneic HSCT for patients with high-risk hematological malignancies. Further improvements in exploiting the GVL effect to prevent relapse in high-risk leukemias while minimizing toxicity have focused on the use of targeted antileukemic immunotherapy. These strategies include methods to boost the GVL effect with leukemia vaccines or the adoptive transfer of leukemia-specific lymphocytes. Vaccines can be classified as those against defined antigens such as minor histocompatibility antigens (mHags) or leukemia-associated antigens (PR1, WT1, and BCR-ABL) and those that have broad "antileukemic" activity such as engineered irradiated leukemia cells or leukemia-derived dendritic cells (DCs). The unique posttransplantation milieu, which is characterized by lymphopenia, regulatory T-cell depletion, and the release of growth factors, provides a unique opportunity for effective antitumor immunotherapy and augmenting specific GVL responses. This review focuses on approaches to enhancimg the GVL response by combining allogeneic HSCT with vaccination.
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