1
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Wang B, Reville PK, Yassouf MY, Jelloul FZ, Ly C, Desai PN, Wang Z, Borges P, Veletic I, Dasdemir E, Burks JK, Tang G, Guo S, Garza AI, Nasnas C, Vaughn NR, Baran N, Deng Q, Matthews J, Gunaratne PH, Antunes DA, Ekmekcioglu S, Sasaki K, Garcia MB, Cuglievan B, Hao D, Daver N, Green MR, Konopleva M, Futreal A, Post SM, Abbas HA. Comprehensive characterization of IFNγ signaling in acute myeloid leukemia reveals prognostic and therapeutic strategies. Nat Commun 2024; 15:1821. [PMID: 38418901 PMCID: PMC10902356 DOI: 10.1038/s41467-024-45916-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Accepted: 02/05/2024] [Indexed: 03/02/2024] Open
Abstract
Interferon gamma (IFNγ) is a critical cytokine known for its diverse roles in immune regulation, inflammation, and tumor surveillance. However, while IFNγ levels were elevated in sera of most newly diagnosed acute myeloid leukemia (AML) patients, its complex interplay in AML remains insufficiently understood. We aim to characterize these complex interactions through comprehensive bulk and single-cell approaches in bone marrow of newly diagnosed AML patients. We identify monocytic AML as having a unique microenvironment characterized by IFNγ producing T and NK cells, high IFNγ signaling, and immunosuppressive features. IFNγ signaling score strongly correlates with venetoclax resistance in primary AML patient cells. Additionally, IFNγ treatment of primary AML patient cells increased venetoclax resistance. Lastly, a parsimonious 47-gene IFNγ score demonstrates robust prognostic value. In summary, our findings suggest that inhibiting IFNγ is a potential treatment strategy to overcoming venetoclax resistance and immune evasion in AML patients.
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Affiliation(s)
- Bofei Wang
- Department of Leukemia, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Patrick K Reville
- Department of Leukemia, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Mhd Yousuf Yassouf
- Department of Leukemia, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Fatima Z Jelloul
- Department of Hematopathology, Division of Pathology & Laboratory Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Christopher Ly
- Department of Leukemia, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Poonam N Desai
- Department of Leukemia, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
- School of Biomedical Informatics, The University of Texas Health Science Center, Houston, TX, USA
| | - Zhe Wang
- Department of Leukemia, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Pamella Borges
- Department of Leukemia, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
- Department of Biology and Biochemistry, University of Houston, Houston, TX, USA
| | - Ivo Veletic
- Department of Leukemia, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Enes Dasdemir
- Department of Leukemia, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
- Department of Biology and Biochemistry, University of Houston, Houston, TX, USA
| | - Jared K Burks
- Department of Leukemia, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Guilin Tang
- Department of Hematopathology, Division of Pathology & Laboratory Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Shengnan Guo
- School of Basic Medical Sciences, Harbin Medical University, Harbin, Heilongjiang, China
| | - Araceli Isabella Garza
- Department of Leukemia, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Cedric Nasnas
- Department of Leukemia, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Nicole R Vaughn
- Department of Leukemia, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Natalia Baran
- Department of Leukemia, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Qing Deng
- Department of Lymphoma & Myeloma, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Jairo Matthews
- Department of Leukemia, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Preethi H Gunaratne
- Department of Biology and Biochemistry, University of Houston, Houston, TX, USA
| | - Dinler A Antunes
- Department of Biology and Biochemistry, University of Houston, Houston, TX, USA
| | - Suhendan Ekmekcioglu
- Department of Melanoma Medical Oncology, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Koji Sasaki
- Department of Leukemia, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Miriam B Garcia
- Department of Pediatrics, Division of Pediatrics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Branko Cuglievan
- Department of Pediatrics, Division of Pediatrics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Dapeng Hao
- School of Basic Medical Sciences, Harbin Medical University, Harbin, Heilongjiang, China
| | - Naval Daver
- Department of Leukemia, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Michael R Green
- Department of Lymphoma & Myeloma, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
- Department of Genomic Medicine, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Marina Konopleva
- Department of Leukemia, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
- Department of Oncology, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Andrew Futreal
- Department of Genomic Medicine, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Sean M Post
- Department of Leukemia, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Hussein A Abbas
- Department of Leukemia, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
- Department of Genomic Medicine, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
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2
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Jansen G, Al M, Assaraf YG, Kammerer S, van Meerloo J, Ossenkoppele GJ, Cloos J, Peters GJ. Statins markedly potentiate aminopeptidase inhibitor activity against (drug-resistant) human acute myeloid leukemia cells. CANCER DRUG RESISTANCE (ALHAMBRA, CALIF.) 2023; 6:430-446. [PMID: 37842233 PMCID: PMC10571057 DOI: 10.20517/cdr.2023.20] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 05/22/2023] [Accepted: 06/25/2023] [Indexed: 09/15/2023]
Abstract
Aim: This study aimed to decipher the molecular mechanism underlying the synergistic effect of inhibitors of the mevalonate-cholesterol pathway (i.e., statins) and aminopeptidase inhibitors (APis) on APi-sensitive and -resistant acute myeloid leukemia (AML) cells. Methods: U937 cells and their sublines with low and high levels of acquired resistance to (6S)-[(R)-2-((S)-Hydroxy-hydroxycarbamoyl-methoxy-methyl)-4-methyl-pentanoylamino]-3,3 dimethyl-butyric acid cyclopentyl ester (CHR2863), an APi prodrug, served as main AML cell line models. Drug combination effects were assessed with CHR2863 and in vitro non-toxic concentrations of various statins upon cell growth inhibition, cell cycle effects, and apoptosis induction. Mechanistic studies involved analysis of Rheb prenylation required for mTOR activation. Results: A strong synergy of CHR2863 with the statins simvastatin, fluvastatin, lovastatin, and pravastatin was demonstrated in U937 cells and two CHR2863-resistant sublines. This potent synergy between simvastatin and CHR2863 was also observed with a series of other human AML cell lines (e.g., THP1, MV4-11, and KG1), but not with acute lymphocytic leukemia or multiple solid tumor cell lines. This synergistic activity was: (i) specific for APis (e.g., CHR2863 and Bestatin), rather than for other cytotoxic agents; and (ii) corroborated by enhanced induction of apoptosis and cell cycle arrest which increased the sub-G1 fraction. Consistently, statin potentiation of CHR2863 activity was abrogated by co-administration of mevalonate and/or farnesyl pyrophosphate, suggesting the involvement of protein prenylation; this was experimentally confirmed by impaired Rheb prenylation by simvastatin. Conclusion: These novel findings suggest that the combined inhibitory effect of impaired Rheb prenylation and CHR2863-dependent mTOR inhibition instigates a potent synergistic inhibition of statins and APis on human AML cells.
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Affiliation(s)
- Gerrit Jansen
- Department of Rheumatology and Clinical Immunology, Amsterdam Rheumatology and immunology Center, Amsterdam University Medical Center, location VUmc, Amsterdam 1081 HV, The Netherlands
| | - Marjon Al
- Department of Rheumatology and Clinical Immunology, Amsterdam Rheumatology and immunology Center, Amsterdam University Medical Center, location VUmc, Amsterdam 1081 HV, The Netherlands
| | - Yehuda G. Assaraf
- The Fred Wyszkowsky Cancer Research Laboratory, Faculty of Biology, The Technion-Israel Institute of Technology, Haifa 3200003, Israel
| | - Sarah Kammerer
- Department of Medical Oncology, Amsterdam University Medical Center, location VUmc, Amsterdam 1081 HV, The Netherlands
- Institute of Biotechnology, Molecular Cell Biology, Brandenburg University of Technology Cottbus-Senftenberg, Senftenberg 01968, Germany
| | - Johan van Meerloo
- Department of Hematology, Amsterdam University Medical Center, location VUmc, Amsterdam 1081 HV, The Netherlands
| | - Gert J. Ossenkoppele
- Department of Hematology, Amsterdam University Medical Center, location VUmc, Amsterdam 1081 HV, The Netherlands
| | - Jacqueline Cloos
- Department of Hematology, Amsterdam University Medical Center, location VUmc, Amsterdam 1081 HV, The Netherlands
| | - Godefridus J. Peters
- Department of Medical Oncology, Amsterdam University Medical Center, location VUmc, Amsterdam 1081 HV, The Netherlands
- Department of Biochemistry, Medical University of Gdansk, Gdansk 80-210, Poland
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3
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The relevance of HLA class II genes in JAK2 V617F-positive myeloproliferative neoplasms. Hum Immunol 2023; 84:199-207. [PMID: 36707384 DOI: 10.1016/j.humimm.2023.01.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 12/29/2022] [Accepted: 01/17/2023] [Indexed: 01/27/2023]
Abstract
In the present study we analyzed the relevance of HLA class II in JAK2 V617F-positive (JAK2 V617F+) myeloproliferative neoplasms (MPNs) focusing on genotype diversity, associations with specific alleles and haplotypes and the level of gene expression. One hundred and thirty-nine JAK2 V617F+ MPN patients and 1083 healthy controls, typed by Next generation sequencing (NGS) were included in the study. Multivariate generalized linear models with age as a covariate were applied for analysis of HLA-II allele and haplotype associations. Publicly available gene expression datasets were used to analyze HLA-II pathway genes expression in CD34+ stem cells (SCs) from MPN patients and healthy controls. We did not observe differences in HLA evolutionary divergence (HED) between JAK2 V617F+ MPNs and healthy controls. Two alleles: HLA-DPB1*03:01, DQB1*04:02 and 4 haplotypes: DPB1*02:01-DQA1*05:05-DQB1*03:01-DRB1*11:01, DPB1*04:02-DQA1*05:05-DQB1*03:01-DRB1*11:03, DPB1*02:01-DQA1*01:04-DQB1*05:03-DRB1*14:04, and DPB1*04:01-DQA1*03:01-DQB1*03:02-DRB1*04:01 had significantly lower frequency in MPN patients compared to controls. Additionally, we observed HLA-II alleles and haplotypes with statistically higher frequencies in JAK2 V617F+ patients. Differential gene expression analysis showed down-regulation of HLA-DRB1, -DRA, -DMA, -DMB, -DOA,-DRB4, CIITA, and CD74 genes in JAK2 V617F+ MPN CD34+ SCs as compared to normal CD34 + SCs. In conclusion, this study provides evidence for the pleiotropic effects of HLA-II genes in JAK2 V617F-driven MPNs.
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4
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Li QL, Tang J, Zhao L, Ruze A, Shan XF, Gao XM. The role of CD74 in cardiovascular disease. Front Cardiovasc Med 2023; 9:1049143. [PMID: 36712241 PMCID: PMC9877307 DOI: 10.3389/fcvm.2022.1049143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Accepted: 12/21/2022] [Indexed: 01/15/2023] Open
Abstract
Leukocyte differentiation antigen 74 (CD74), also known as invariant chain, is a molecular chaperone of major histocompatibility complex class II (MHC II) molecules involved in antigen presentation. CD74 has recently been shown to be a receptor for the macrophage migration inhibitory factor family proteins (MIF/MIF2). Many studies have revealed that CD74 plays an important role in cardiovascular disease. In this review, we summarize the structure and main functions of CD74 and then focus on the recent research progress on the role of CD74 in cardiovascular diseases. In addition, we also discuss potential treatment strategies that target CD74. Our systematic review of the role of CD74 in cardiovascular disease will fill some knowledge gaps in the field.
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Affiliation(s)
- Qiu-Lin Li
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asian, Department of Cardiology, The First Affiliated Hospital of Xinjiang Medical University, Ürümqi, China,Xinjiang Key Laboratory of Medical Animal Model Research, Ürümqi, China
| | - Jing Tang
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asian, Department of Cardiology, The First Affiliated Hospital of Xinjiang Medical University, Ürümqi, China,Xinjiang Key Laboratory of Medical Animal Model Research, Ürümqi, China,Department of Clinical Laboratory, The First Affiliated Hospital of Xinjiang Medical University, Ürümqi, China
| | - Ling Zhao
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asian, Department of Cardiology, The First Affiliated Hospital of Xinjiang Medical University, Ürümqi, China,Xinjiang Key Laboratory of Medical Animal Model Research, Ürümqi, China
| | - Amanguli Ruze
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asian, Department of Cardiology, The First Affiliated Hospital of Xinjiang Medical University, Ürümqi, China,Xinjiang Key Laboratory of Medical Animal Model Research, Ürümqi, China
| | - Xue-Feng Shan
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asian, Department of Cardiology, The First Affiliated Hospital of Xinjiang Medical University, Ürümqi, China,Xinjiang Key Laboratory of Medical Animal Model Research, Ürümqi, China
| | - Xiao-Ming Gao
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asian, Department of Cardiology, The First Affiliated Hospital of Xinjiang Medical University, Ürümqi, China,Xinjiang Key Laboratory of Medical Animal Model Research, Ürümqi, China,Clinical Medical Research Institute of Xinjiang Medical University, Ürümqi, China,*Correspondence: Xiao-Ming Gao,
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5
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Antohe I, Tanasa MP, Dăscălescu A, Dănăilă C, Titieanu A, Zlei M, Ivanov I, Sireteanu A, Cianga P. The MHC-II antigen presentation machinery and B7 checkpoint ligands display distinctive patterns correlated with acute myeloid leukaemias blast cells HLA-DR expression. Immunobiology 2020; 226:152049. [PMID: 33352400 DOI: 10.1016/j.imbio.2020.152049] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 10/09/2020] [Accepted: 11/29/2020] [Indexed: 10/22/2022]
Abstract
Acute Myeloid Leukaemia (AML) is a neoplasia characterised by rapid proliferation and an increased rate of relapses. The AML blasts display features of antigen-presenting cells (APC), and thus can directly modulate the anti-tumour T cell responses. The bone marrow of a group consisting of 30 newly diagnosed patients and four healthy donors (HD) was investigated for the expression of HLA-DR, several molecules involved in MHC-II antigen-presentation and MHC-II groove editing, like HLA-DM, CD74 and CLIP, as well as a set of immune checkpoint ligands, like ICOS-L, B7.2, PD-L2 and B7-H3. The patients were further characterised for their genetic anomalies and distributed to favourable, intermediate and adverse ELN risk categories. We were able to show that while 23% of our patients displayed a low level of HLA-DR surface expression, all patients displayed higher HLA-DM and CD74 expression compared to HD. However, a higher CLIP expression was noticed only in the HLA-DR low patients. The co-inhibitory PD-L2 and B7-H3 molecules were increased in the cases with normal HLA-DR expression; oppositely, the co-stimulatory ICOS-L and the dual function B7.2 were significantly increased in the cases with HLA-DR low expression. Furthermore, no favourable ELN risk cases were found within the HLA-DR low group. All in all, these data show that the AML with low versus normal HLA-DR expression display different profiles of MHC class II machinery molecules and B7 ligands, which are correlated with distinct ELN stratification. Furthermore, as our study included healthy individuals, it offers valuable information about the expression levels that should be considered as normal for these markers known to cause differences in peptide repertoires, reflected further in distinct T-cells polarisation pathways.
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Affiliation(s)
- Ion Antohe
- Haematology Department, "Grigore T. Popa" University of Medicine and Pharmacy, Iaşi, Romania; Haematology Department, Regional Oncology Institute, Iaşi, Romania
| | - Mariana Pavel Tanasa
- Immunology Department, "Grigore T. Popa" University of Medicine and Pharmacy, Iaşi, Romania
| | - Angela Dăscălescu
- Haematology Department, "Grigore T. Popa" University of Medicine and Pharmacy, Iaşi, Romania; Haematology Department, Regional Oncology Institute, Iaşi, Romania
| | - Cătălin Dănăilă
- Haematology Department, "Grigore T. Popa" University of Medicine and Pharmacy, Iaşi, Romania; Haematology Department, Regional Oncology Institute, Iaşi, Romania
| | - Amalia Titieanu
- Haematology Department, "Grigore T. Popa" University of Medicine and Pharmacy, Iaşi, Romania; Haematology Department, Regional Oncology Institute, Iaşi, Romania
| | - Mihaela Zlei
- Immunophenotyping Department, Regional Oncology Institute, Iaşi, Romania
| | - Iuliu Ivanov
- Molecular Diagnostic Department, Regional Oncology Institute, Iaşi, Romania
| | - Adriana Sireteanu
- Molecular Diagnostic Department, Regional Oncology Institute, Iaşi, Romania
| | - Petru Cianga
- Immunology Department, "Grigore T. Popa" University of Medicine and Pharmacy, Iaşi, Romania.
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Antohe I, Dǎscǎlescu A, Dǎnǎilǎ C, Titieanu A, Zlei M, Ivanov I, Sireteanu A, Pavel M, Cianga P. B7-Positive and B7-Negative Acute Myeloid Leukemias Display Distinct T Cell Maturation Profiles, Immune Checkpoint Receptor Expression, and European Leukemia Net Risk Profiles. Front Oncol 2020; 10:264. [PMID: 32231996 PMCID: PMC7082324 DOI: 10.3389/fonc.2020.00264] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Accepted: 02/14/2020] [Indexed: 01/24/2023] Open
Abstract
Acute myeloid leukemia (AML) is generally considered a poorly immunogenic malignancy, displaying a “non-inflamed” leukemia microenvironment (LME), leading to T cell tolerance. However, the immune landscape of AML is much more heterogeneous. Since B7 expression is regarded as a consequence of an interferon-mediated “inflammatory” phenotype, we have investigated by flow cytometry the B7 checkpoint ligands B7.1, B7.2, programmed death ligand 1 (PD-L1), PD-L2, ICOS-L, B7-H3, and B7-H4 on the AML blasts of 30 newly diagnosed patients and their corresponding receptors [cytotoxic T lymphocyte-associated protein 4 (CTLA-4), programmed death 1 (PD-1), and inducible T cell costimulator (ICOS)] on bone marrow (BM) T cell maturation populations. We could thus evidence B7-negative and B7-positive leukemias either with an isolated expression or part of eight different checkpoint ligand “signatures” that always included an inhibitory B7 molecule. B7-positive AMLs encompassed intermediate and adverse European Leukemia Net (ELN) risk cases and displayed mainly central memory CD4+ T cells with high ICOS levels and effector CD8+ T cells with high PD-1 expression. B7-negative cases were rather classified as AML with recurrent genetic anomalies and displayed predominantly naive T cells, with the exception of NPM1 mutated AMLs, which expressed B7-H3. These different B7 immune profiles suggest that specific immunotherapies are required to target the distinct immune evasion strategies of this genetically heterogeneous disease.
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Affiliation(s)
- Ion Antohe
- Hematology Department, Grigore T. Popa University of Medicine and Pharmacy, Iaşi, Romania.,Hematology Department, Regional Oncology Institute, Iaşi, Romania
| | - Angela Dǎscǎlescu
- Hematology Department, Grigore T. Popa University of Medicine and Pharmacy, Iaşi, Romania.,Hematology Department, Regional Oncology Institute, Iaşi, Romania
| | - Cǎtǎlin Dǎnǎilǎ
- Hematology Department, Grigore T. Popa University of Medicine and Pharmacy, Iaşi, Romania.,Hematology Department, Regional Oncology Institute, Iaşi, Romania
| | - Amalia Titieanu
- Hematology Department, Grigore T. Popa University of Medicine and Pharmacy, Iaşi, Romania.,Hematology Department, Regional Oncology Institute, Iaşi, Romania
| | - Mihaela Zlei
- Immunophenotyping Department, Regional Oncology Institute, Iaşi, Romania
| | - Iuliu Ivanov
- Molecular Diagnostic Department, Regional Oncology Institute, Iaşi, Romania
| | - Adriana Sireteanu
- Molecular Diagnostic Department, Regional Oncology Institute, Iaşi, Romania
| | - Mariana Pavel
- Immunology Department, Grigore T. Popa University of Medicine and Pharmacy, Iaşi, Romania
| | - Petru Cianga
- Immunology Department, Grigore T. Popa University of Medicine and Pharmacy, Iaşi, Romania
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7
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Xue L, Hu Y, Wang J, Liu X, Wang X. T cells targeting multiple tumor-associated antigens as a postremission treatment to prevent or delay relapse in acute myeloid leukemia. Cancer Manag Res 2019; 11:6467-6476. [PMID: 31406473 PMCID: PMC6642655 DOI: 10.2147/cmar.s205296] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Accepted: 06/12/2019] [Indexed: 01/31/2023] Open
Abstract
Background Relapse is a major problem in acute myeloid leukemia (AML) and adversely affects survival. Tumor-associated antigen-specific cytotoxic T lymphocyte (TAA-CTLs)-based therapy was introduced and increasingly used clinically to kill tumor cells via tumor antigen activation. Method In this study, we expanded autologous lymphocytes reactive to five TAA (NY-ESO-1, MAGE-A3, WT1, Survivin, and PRAME) and evaluated its safety and efficacy in 9 patients with AML at high risk of relapse. Results Before first TAA-CTL infusion, 5 patients were minimal residual disease (MRD) positive, whereas 4 were MRD negative. Patients received TAA-CTL infusion for 1–3 times. None of them had obvious adverse reactions during or post the infusion. Of the 4 MRD-negative patients who were infused with TAA-CTLs, one developed relapsed disease. Among 5 MRD+ patients, there was a demonstrable antileukemic effect of the TAA-CTLs alone without any concomitant chemotherapy in 2 patients, as demonstrated by the negative of MRD in bone marrow after TAA-CTL infusion. Conclusions In summary, we have observed preliminary indications of activity and safety after administration of autologous TAA-CTLs in patients with AML. The ultimate question of clinical efficacy, however, will need to be addressed in a larger trial with larger homogeneous patient population.
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Affiliation(s)
- Lei Xue
- Department of Hematology, The First Affiliated Hospital of USTC, Division of Life Science and Medicine, University of Sciences and Technology of China, Hefei, Anhui 230001, People's Republic of China
| | - Yan Hu
- Department of Hematology, The First Affiliated Hospital of USTC, Division of Life Science and Medicine, University of Sciences and Technology of China, Hefei, Anhui 230001, People's Republic of China
| | - Jian Wang
- Department of Hematology, The First Affiliated Hospital of USTC, Division of Life Science and Medicine, University of Sciences and Technology of China, Hefei, Anhui 230001, People's Republic of China
| | - Xin Liu
- Department of Hematology, The First Affiliated Hospital of USTC, Division of Life Science and Medicine, University of Sciences and Technology of China, Hefei, Anhui 230001, People's Republic of China
| | - Xingbing Wang
- Department of Hematology, The First Affiliated Hospital of USTC, Division of Life Science and Medicine, University of Sciences and Technology of China, Hefei, Anhui 230001, People's Republic of China.,Department of Hematology, Anhui Provincial Hospital, Anhui Medical University, Hefei, Anhui, People's Republic of China
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8
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Seliger B, Kloor M, Ferrone S. HLA class II antigen-processing pathway in tumors: Molecular defects and clinical relevance. Oncoimmunology 2017; 6:e1171447. [PMID: 28344859 DOI: 10.1080/2162402x.2016.1171447] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Revised: 03/21/2016] [Accepted: 03/23/2016] [Indexed: 01/21/2023] Open
Abstract
The human leukocyte antigen (HLA) class II antigen-processing machinery (APM) presents to cognate CD4+ T-cells antigenic peptides mainly generated from exogeneous proteins in the endocytic compartment. These CD4+ T cells exert helper function, but may also act as effector cells, thereby recognizing HLA class II antigen-expressing tumor cells. Thus, HLA class II antigen expression by tumor cells influences the tumor antigen (TA)-specific immune responses and, depending on the cancer type, the clinical course of the disease. Many types of human cancers express HLA class II antigens, although with marked differences in their frequency. Some types of cancer lack HLA class II antigen expression, which could be due to structural defects or deregulation affecting different components of the complex HLA class II APM and/or from lack of cytokine(s) in the tumor microenvironment. In this review, we have summarized the information about HLA class II antigen distribution in normal tissues, the structural organization of the HLA class II APM, their expression and regulation in malignant cells, the defects, which have been identified in malignant cells, and their functional and clinical relevance.
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Affiliation(s)
- Barbara Seliger
- Martin Luther-University Halle-Wittenberg, Institute of Medical Immunology , Halle, Germany
| | - Matthias Kloor
- Department of Applied Tumor Biology, Institute of Pathology, University Hospital Heidelberg, Clinical Cooperation Unit Applied Tumor Biology, DKFZ (German Cancer Research Center) , Heidelberg, Germany
| | - Soldano Ferrone
- Departments of Surgery and Orthopedic Surgery, Massachusetts General Hospital, Harvard Medical School , Boston, MA, USA
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9
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Ishii K, Barrett AJ. Novel immunotherapeutic approaches for the treatment of acute leukemia (myeloid and lymphoblastic). Ther Adv Hematol 2016; 7:17-39. [PMID: 26834952 PMCID: PMC4713888 DOI: 10.1177/2040620715616544] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
There have been major advances in our understanding of the multiple interactions between malignant cells and the innate and adaptive immune system. While the attention of immunologists has hitherto focused on solid tumors, the specific immunobiology of acute leukemias is now becoming defined. These discoveries have pointed the way to immune interventions building on the established graft-versus-leukemia (GVL) effect from hematopoietic stem-cell transplant (HSCT) and extending immunotherapy beyond HSCT to individuals with acute leukemia with a diversity of immune manipulations early in the course of the leukemia. At present, clinical results are in their infancy. In the coming years larger studies will better define the place of immunotherapy in the management of acute leukemias and lead to treatment approaches that combine conventional chemotherapy, immunotherapy and HSCT to achieve durable cures.
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Affiliation(s)
- Kazusa Ishii
- Hematology Branch, National Heart, Lung, and Blood Institute, US National Institutes of Health, Bethesda, MD, USA
| | - Austin J. Barrett
- Stem Cell Allotransplantation Section, Hematology Branch, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, MD, USA
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10
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van den Ancker W, van Luijn MM, Chamuleau ME, Kelder A, Feller N, Terwijn M, Zevenbergen A, Schuurhuis GJ, Ham SMV, Westers TM, Ossenkoppele GJ, van de Loosdrecht AA. High class II-associated invariant chain peptide expression on residual leukemic cells is associated with increased relapse risk in acute myeloid leukemia. Leuk Res 2014; 38:691-3. [DOI: 10.1016/j.leukres.2014.03.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Revised: 02/12/2014] [Accepted: 03/16/2014] [Indexed: 12/28/2022]
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11
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Kerkhoff N, Bontkes HJ, Westers TM, de Gruijl TD, Kordasti S, van de Loosdrecht AA. Dendritic cells in myelodysplastic syndromes: from pathogenesis to immunotherapy. Immunotherapy 2013; 5:621-37. [DOI: 10.2217/imt.13.51] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Myelodysplastic syndromes (MDS) are clonal disorders of the hematopoietic stem cell characterized by ineffective hematopoiesis leading to peripheral cytopenias. Different processes are involved in its pathogenesis, such as (epi)genetic alterations and immunological dysfunctions. The nature of immune dysregulation is markedly different between various MDS risk groups. In low-risk MDS, the immune system is in a proinflammatory state, whereas in high-risk disease, immunosuppressive features facilitate expansion of the dysplastic clone and can eventually lead to disease progression to acute myeloid leukemia. Various cell types contribute to dysregulation of immune responses in MDS. Dendritic cells (DCs) are important regulators of immunity. However, the role of DCs in MDS has yet to be elucidated. It has been suggested that impaired DC function can hamper adequate immune responses. This review focuses on the involvement of DCs in immune dysregulation in low- and high-risk MDS and the implications for DC-targeted therapies.
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Affiliation(s)
- Nathalie Kerkhoff
- Department of Hematology, VU University Medical Center, Cancer Center Amsterdam, De Boelelaan 1117, 1081HV Amsterdam, The Netherlands
| | - Hetty J Bontkes
- Department of Pathology, Unit Medical Immunology, VU University Medical Center, De Boelelaan 1117, 1081HV Amsterdam, The Netherlands
| | - Theresia M Westers
- Department of Hematology, VU University Medical Center, Cancer Center Amsterdam, De Boelelaan 1117, 1081HV Amsterdam, The Netherlands
| | - Tanja D de Gruijl
- Department of Medical Oncology, VU University Medical Center, Cancer Center Amsterdam, De Boelelaan 1117, 1081HV Amsterdam, The Netherlands
| | - Shahram Kordasti
- Department of Haematological Medicine, King’s College Hospital London, Rayne Institute, 123 Coldharbour Lane, London, SE5 9NU, UK
| | - Arjan A van de Loosdrecht
- Department of Hematology, VU University Medical Center, Cancer Center Amsterdam, De Boelelaan 1117, 1081HV Amsterdam, The Netherlands
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12
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Chornoguz O, Gapeev A, O'Neill MC, Ostrand-Rosenberg S. Major histocompatibility complex class II+ invariant chain negative breast cancer cells present unique peptides that activate tumor-specific T cells from breast cancer patients. Mol Cell Proteomics 2012; 11:1457-67. [PMID: 22942358 DOI: 10.1074/mcp.m112.019232] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The major histocompatibility complex (MHC) class II-associated Invariant chain (Ii) is present in professional antigen presenting cells where it regulates peptide loading onto MHC class II molecules and the peptidome presented to CD4+ T lymphocytes. Because Ii prevents peptide loading in neutral subcellular compartments, we reasoned that Ii- cells may present peptides not presented by Ii+ cells. Based on the hypothesis that patients are tolerant to MHC II-restricted tumor peptides presented by Ii+ cells, but will not be tolerant to novel peptides presented by Ii- cells, we generated MHC II vaccines to activate cancer patients' T cells. The vaccines are Ii- tumor cells expressing syngeneic HLA-DR and the costimulatory molecule CD80. We used liquid chromatography coupled with mass spectrometry to sequence MHC II-restricted peptides from Ii+ and Ii- MCF10 human breast cancer cells transfected with HLA-DR7 or the MHC Class II transactivator CIITA to determine if Ii- cells present novel peptides. Ii expression was induced in the HLA-DR7 transfectants by transfection of Ii, and inhibited in the CIITA transfectants by RNA interference. Peptides were analyzed and binding affinity predicted by artificial neural net analysis. HLA-DR7-restricted peptides from Ii- and Ii+ cells do not differ in size or in subcellular location of their source proteins; however, a subset of HLA-DR7-restricted peptides of Ii- cells are not presented by Ii+ cells, and are derived from source proteins not used by Ii+ cells. Peptides from Ii- cells with the highest predicted HLA-DR7 binding affinity were synthesized, and activated tumor-specific HLA-DR7+ human T cells from healthy donors and breast cancer patients, demonstrating that the MS-identified peptides are bonafide tumor antigens. These results demonstrate that Ii regulates the repertoire of tumor peptides presented by MHC class II+ breast cancer cells and identify novel immunogenic MHC II-restricted peptides that are potential therapeutic reagents for cancer patients.
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Affiliation(s)
- Olesya Chornoguz
- Department of Biological Sciences, University of Maryland Baltimore County, Baltimore, Maryland, USA
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13
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van Luijn MM, van de Loosdrecht AA, Lampen MH, van Veelen PA, Zevenbergen A, Kester MGD, de Ru AH, Ossenkoppele GJ, van Hall T, van Ham SM. Promiscuous binding of invariant chain-derived CLIP peptide to distinct HLA-I molecules revealed in leukemic cells. PLoS One 2012; 7:e34649. [PMID: 22563374 PMCID: PMC3338516 DOI: 10.1371/journal.pone.0034649] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2011] [Accepted: 03/05/2012] [Indexed: 01/20/2023] Open
Abstract
Antigen presentation by HLA class I (HLA-I) and HLA class II (HLA-II) complexes is achieved by proteins that are specific for their respective processing pathway. The invariant chain (Ii)-derived peptide CLIP is required for HLA-II-mediated antigen presentation by stabilizing HLA-II molecules before antigen loading through transient and promiscuous binding to different HLA-II peptide grooves. Here, we demonstrate alternative binding of CLIP to surface HLA-I molecules on leukemic cells. In HLA-II-negative AML cells, we found plasma membrane display of the CLIP peptide. Silencing Ii in AML cells resulted in reduced HLA-I cell surface display, which indicated a direct role of CLIP in the HLA-I antigen presentation pathway. In HLA-I-specific peptide eluates from B-LCLs, five Ii-derived peptides were identified, of which two were from the CLIP region. In vitro peptide binding assays strikingly revealed that the eluted CLIP peptide RMATPLLMQALPM efficiently bound to four distinct HLA-I supertypes (-A2, -B7, -A3, -B40). Furthermore, shorter length variants of this CLIP peptide also bound to these four supertypes, although in silico algorithms only predicted binding to HLA-A2 or -B7. Immunization of HLA-A2 transgenic mice with these peptides did not induce CTL responses. Together these data show a remarkable promiscuity of CLIP for binding to a wide variety of HLA-I molecules. The found participation of CLIP in the HLA-I antigen presentation pathway could reflect an aberrant mechanism in leukemic cells, but might also lead to elucidation of novel processing pathways or immune escape mechanisms.
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Affiliation(s)
- Marvin M van Luijn
- Department of Hematology, VU Institute for Cancer and Immunology, VU University Medical Center, Amsterdam, The Netherlands.
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14
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Modification of an exposed loop in the C1 domain reduces immune responses to factor VIII in hemophilia A mice. Blood 2012; 119:5294-300. [PMID: 22498747 DOI: 10.1182/blood-2011-11-391680] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Development of neutralizing Abs to blood coagulation factor VIII (FVIII) provides a major complication in hemophilia care. In this study we explored whether modulation of the uptake of FVIII by APCs can reduce its intrinsic immunogenicity. Endocytosis of FVIII by professional APCs is significantly blocked by mAb KM33, directed toward the C1 domain of FVIII. We created a C1 domain variant (FVIII-R2090A/K2092A/F2093A), which showed only minimal binding to KM33 and retained its activity as measured by chromogenic assay. FVIII-R2090A/K2092A/F2093A displayed a strongly reduced internalization by human monocyte-derived dendritic cells and macrophages, as well as murine BM-derived dendritic cells. We subsequently investigated the ability of this variant to induce an immune response in FVIII-deficient mice. We show that mice treated with FVIII-R2090A/K2092A/F2093A have significantly lower anti-FVIII Ab titers and FVIII-specific CD4(+) T-cell responses compared with mice treated with wild-type FVIII. These data show that alanine substitutions at positions 2090, 2092, and 2093 reduce the immunogenicity of FVIII. According to our findings we hypothesize that FVIII variants displaying a reduced uptake by APCs provide a novel therapeutic approach to reduce inhibitor development in hemophilia A.
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Class II-associated invariant chain peptide expression represents a novel parameter for flow cytometric detection of acute promyelocytic leukemia. THE AMERICAN JOURNAL OF PATHOLOGY 2011; 179:2157-61. [PMID: 21907692 DOI: 10.1016/j.ajpath.2011.07.027] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2011] [Revised: 06/21/2011] [Accepted: 07/12/2011] [Indexed: 11/22/2022]
Abstract
Because of severe bleeding complications, patients with acute promyelocytic leukemia (APL) have to be treated with all-trans retinoic acid immediately following diagnosis. In addition to morphology, flow cytometry contributes to a rapid detection of APL according to phenotypic characteristics of leukemic cells. In some patients, these analyses are inconclusive or even contradictory to diagnosis. Previously, we showed the clinical and functional impact of class II-associated invariant chain peptide (CLIP) in acute myeloid leukemia (AML). This study focuses on the analysis of CLIP expression on leukemic cells to characterize HLA-DR-negative AML, including APL. We demonstrate exclusive and significant CLIP expression in all cases of typical and variant APL, as compared to other HLA-DR-negative non-APL-type AML. CLIP appears to be a highly sensitive and specific flow cytometric marker, resolving discrepant identification of both genetic subgroups. Our findings show the additive value of CLIP analysis for a fast and unequivocal recognition of APL by flow cytometry in conjunction with morphology.
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van Luijn MM, van den Ancker W, Chamuleau MED, Zevenbergen A, Westers TM, Ossenkoppele GJ, van Ham SM, van de Loosdrecht AA. Absence of class II-associated invariant chain peptide on leukemic blasts of patients promotes activation of autologous leukemia-reactive CD4+ T cells. Cancer Res 2011; 71:2507-17. [PMID: 21310823 DOI: 10.1158/0008-5472.can-10-3689] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Immune escape in cancer poses a substantial obstacle to successful cancer immunotherapy. Multiple defects in HLA class I antigen presentation exist in cancer that may contribute to immune escape, but less is known about roles for HLA class II antigen presentation. On class II(+) leukemic blasts, the presence of class II-associated invariant chain peptide (CLIP) is known to be correlated with poor survival in acute myeloid leukemia (AML). In this study, we evaluated the functional significance of CLIP expression on leukemic blasts of AML patients. CD4(+) T cells from patients were cocultured with autologous CLIP(-) and CLIP(+) primary leukemic blasts and analyzed for several functional parameters by flow cytometry. Increased HLA-DR and IFN-γ expression was observed for CD4(+) T cells stimulated with CLIP(-) leukemic blasts, in contrast to CLIP(+) leukemic blasts, which indicated an activation and polarization of the CD4(+) T cells toward T-helper 1 cells. In addition, CLIP(-) leukemic blasts induced greater outgrowth of effector memory CD4(+) T cells (with HLA-DR-restricted T-cell receptor Vβ repertoires) that were associated with better leukemia-specific reactivity than with CLIP(+) leukemic blasts. Our findings offer a clinical rationale to downmodulate CLIP on leukemic blasts as a strategy to degrade immune escape and improve leukemia-specific T-cell immunity in AML patients.
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Affiliation(s)
- Marvin M van Luijn
- Department of Hematology, Cancer Center Amsterdam and VU Institute for Cancer and Immunology, VU University Medical Center, The Netherlands.
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Targeting Toll-like receptor 7/8 enhances uptake of apoptotic leukemic cells by monocyte-derived dendritic cells but interferes with subsequent cytokine-induced maturation. Cancer Immunol Immunother 2010; 60:37-47. [PMID: 20859626 PMCID: PMC3029806 DOI: 10.1007/s00262-010-0917-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2010] [Accepted: 08/31/2010] [Indexed: 12/13/2022]
Abstract
Therapeutic vaccination with dendritic cells (DC) is an emerging investigational therapy for eradication of minimal residual disease in acute myeloid leukemia. Various strategies are being explored in manufacturing DC vaccines ex vivo, e.g., monocyte-derived DC (MoDC) loaded with leukemia-associated antigens (LAA). However, the optimal source of LAA and the choice of DC-activating stimuli are still not well defined. Here, loading with leukemic cell preparations (harboring both unknown and known LAA) was explored in combination with a DC maturation-inducing cytokine cocktail (CC; IL-1β, IL-6, TNF-α, and PGE2) and Toll-like receptor ligands (TLR-L) to optimize uptake. Since heat shock induced apoptotic blasts were more efficiently taken up than lysates, we focused on uptake of apoptotic leukemic cells. Uptake of apoptotic blast was further enhanced by the TLR7/8-L R848 (20–30%); in contrast, CC-induced maturation inhibited uptake. CC, and to a lesser extent R848, enhanced the ability of MoDC to migrate and stimulate T cells. Furthermore, class II-associated invariant chain peptide expression was down-modulated after R848- or CC-induced maturation, indicating enhanced processing and presentation of antigenic peptides. To improve both uptake and maturation, leukemic cells and MoDC were co-incubated with R848 for 24 h followed by addition of CC. However, this approach interfered with CC-mediated MoDC maturation as indicated by diminished migratory and T cell stimulatory capacity, and the absence of IL-12 production. Taken together, our data demonstrate that even though R848 improved uptake of apoptotic leukemic cells, the sequential use of R848 and CC is counter-indicated due to its adverse effects on MoDC maturation.
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van Luijn MM, Chamuleau MED, Ressing ME, Wiertz EJ, Ostrand-Rosenberg S, Souwer Y, Zevenbergen A, Ossenkoppele GJ, van de Loosdrecht AA, van Ham SM. Alternative Ii-independent antigen-processing pathway in leukemic blasts involves TAP-dependent peptide loading of HLA class II complexes. Cancer Immunol Immunother 2010; 59:1825-38. [PMID: 20820776 PMCID: PMC2945475 DOI: 10.1007/s00262-010-0908-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2010] [Accepted: 08/14/2010] [Indexed: 01/08/2023]
Abstract
During HLA class II synthesis in antigen-presenting cells, the invariant chain (Ii) not only stabilizes HLA class II complexes in the endoplasmic reticulum, but also mediates their transport to specialized lysosomal antigen-loading compartments termed MIICs. This study explores an alternative HLA class II presentation pathway in leukemic blasts that involves proteasome and transporter associated with antigen processing (TAP)-dependent peptide loading. Although HLA-DR did associate with Ii, Ii silencing in the human class II-associated invariant chain peptide (CLIP)-negative KG-1 myeloid leukemic cell line did not affect total and plasma membrane expression levels of HLA-DR, as determined by western blotting and flow cytometry. Since HLA-DR expression does require peptide binding, we examined the role of endogenous antigen-processing machinery in HLA-DR presentation by CLIP(-) leukemic blasts. The suppression of proteasome and TAP function using various inhibitors resulted in decreased HLA-DR levels in both CLIP(-) KG-1 and ME-1 blasts. Simultaneous inhibition of TAP and Ii completely down-modulated the expression of HLA-DR, demonstrating that together these molecules form the key mediators of HLA class II antigen presentation in leukemic blasts. By the use of a proteasome- and TAP-dependent pathway for HLA class II antigen presentation, CLIP(-) leukemic blasts might be able to present a broad range of endogenous leukemia-associated peptides via HLA class II to activate leukemia-specific CD4(+) T cells.
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Affiliation(s)
- Marvin M van Luijn
- Department of Hematology, Cancer Center Amsterdam, VU Institute for Cancer and Immunology, VU University Medical Center, De Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands.
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19
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Abstract
While chemotherapy is successful at inducing remission of acute myeloid leukaemia (AML), the disease has a high probability of relapse. Strategies to prevent relapse involve consolidation chemotherapy, stem cell transplantation and immunotherapy. Evidence for immunosurveillance of AML and susceptibility of leukaemia cells to both T cell and natural killer (NK) cell attack and justifies the application of immune strategies to control residual AML persisting after remission induction. Immune therapy for AML includes allogeneic stem cell transplantation, adoptive transfer of allogeneic or autologous T cells or NK cells, vaccination with leukaemia cells, dendritic cells, cell lysates, peptides and DNA vaccines and treatment with cytokines, antibodies and immunomodulatory agents. Here we describe what is known about the immunological features of AML at presentation and in remission, the current status of immunotherapy and strategies combining treatment approaches with a view to achieving leukaemia cure.
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Affiliation(s)
- A J Barrett
- Stem Cell Allotransplantation Section, Hematology Branch, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, MD 20892-1202, USA.
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