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Fozza C, Crobu V, Isoni MA, Dore F. The immune landscape of myelodysplastic syndromes. Crit Rev Oncol Hematol 2016; 107:90-99. [PMID: 27823655 DOI: 10.1016/j.critrevonc.2016.08.016] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Revised: 08/15/2016] [Accepted: 08/31/2016] [Indexed: 12/25/2022] Open
Abstract
Even though the pathogenesis of myelodysplastic syndromes (MDS) is dominated by specific molecular defects involving hematopoietic precursors, also immune mechanisms seem to play a fundamental functional role. In this review we will first describe the clinical and laboratory autoimmune manifestations often detectable in MDS patients. We will then focus on studies addressing the possible influence of different immune cell subpopulations on the disease onset and evolution. We will finally consider therapeutic approaches based on immunomodulation, ranging from immunosuppressants to vaccination and transplantation strategies.
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Affiliation(s)
- Claudio Fozza
- Department of Clinical and Experimental Medicine, University of Sassari, Viale San Pietro 12, 07100 Sassari, Italy.
| | - Valeria Crobu
- Department of Clinical and Experimental Medicine, University of Sassari, Viale San Pietro 12, 07100 Sassari, Italy
| | - Maria Antonia Isoni
- Department of Clinical and Experimental Medicine, University of Sassari, Viale San Pietro 12, 07100 Sassari, Italy
| | - Fausto Dore
- Department of Clinical and Experimental Medicine, University of Sassari, Viale San Pietro 12, 07100 Sassari, Italy
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Fozza C, Corda G, Barraqueddu F, Virdis P, Contini S, Isoni A, Dore F, Podda L, Longinotti M. Evidence of a skewed T-cell repertoire in patients with light chain amyloidosis. Hematol Oncol 2016; 36:492-494. [PMID: 26857096 DOI: 10.1002/hon.2281] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Revised: 12/15/2015] [Accepted: 12/22/2015] [Indexed: 11/10/2022]
Affiliation(s)
- Claudio Fozza
- Department of Biomedical Sciences, University of Sassari, Sassari, Italy
| | - Giovanna Corda
- Department of Biomedical Sciences, University of Sassari, Sassari, Italy
| | | | - Patrizia Virdis
- Department of Biomedical Sciences, University of Sassari, Sassari, Italy
| | - Salvatore Contini
- Department of Biomedical Sciences, University of Sassari, Sassari, Italy
| | - Antonella Isoni
- Department of Biomedical Sciences, University of Sassari, Sassari, Italy
| | - Fausto Dore
- Department of Biomedical Sciences, University of Sassari, Sassari, Italy
| | - Luigi Podda
- Department of Biomedical Sciences, University of Sassari, Sassari, Italy
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Wang W, Gao L, Gong M, Tang Y, Li Y, Zhang WT, Huang FZ, Zhang CX, Chen YR, Gao YY, Li ZL, Ma YG. Non-malignant T-cells lacking multiple pan-T markers can be found in lymph nodes. Leuk Lymphoma 2015; 59:155-161. [PMID: 26293843 DOI: 10.3109/10428194.2015.1055482] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Wei Wang
- Department of Hematology, China-Japan Friendship Hospital, Beijing, PR China
| | - Li Gao
- Department of Hematology, China-Japan Friendship Hospital, Beijing, PR China
| | - Ming Gong
- Department of Hematology, China-Japan Friendship Hospital, Beijing, PR China
| | - Yin Tang
- Department of Hematology, China-Japan Friendship Hospital, Beijing, PR China
| | - Yan Li
- Department of Hematology, China-Japan Friendship Hospital, Beijing, PR China
| | - Wen-Tao Zhang
- Department of Hematology, China-Japan Friendship Hospital, Beijing, PR China
| | - Fan-Zhou Huang
- Department of Hematology, China-Japan Friendship Hospital, Beijing, PR China
| | - Chun-Xia Zhang
- Department of Hematology, China-Japan Friendship Hospital, Beijing, PR China
| | - Yan-Rong Chen
- Department of Hematology, China-Japan Friendship Hospital, Beijing, PR China
| | - Ya-Yue Gao
- Department of Hematology, China-Japan Friendship Hospital, Beijing, PR China
| | - Zhen-Ling Li
- Department of Hematology, China-Japan Friendship Hospital, Beijing, PR China
| | - Yi-Gai Ma
- Department of Hematology, China-Japan Friendship Hospital, Beijing, PR China
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Li Y, Xu L. Evaluation of TCR repertoire diversity in patients after hematopoietic stem cell transplantation. Stem Cell Investig 2015; 2:17. [PMID: 27358885 DOI: 10.3978/j.issn.2306-9759.2015.09.01] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Accepted: 08/19/2015] [Indexed: 12/16/2022]
Abstract
T-cell receptor (TCR) repertoire analyses have been widely used to identify T cell populations of interest in cancer and autoimmunity and for characterizing immune repertoire reconstitution after hematopoietic stem cell transplantation (HSCT). Several decades of development and progress have led to the use of techniques for evaluating TCR repertoires in a more comprehensive, unbiased and fast manner, and the mechanisms of T cell immune reconstitution after HSCT and the new approaches used for recovering T cell repertoire diversity post HSCT have been more exhaustively documented to some degree. To better understand and characterize this progress, here we review recent studies on TCR repertoire diversity recovery in patients with leukemia and autoimmune disease who have received HSCT, impact factors and improvements in approaches for TCR repertoire recovery after HSCT.
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Affiliation(s)
- Yangqiu Li
- 1 Institute of Hematology, Medical College, 2 Department of Hematology, First Affiliated Hospital, 3 Key Laboratory for Regenerative Medicine of Ministry of Education, Jinan University, Guangzhou 510632, China
| | - Ling Xu
- 1 Institute of Hematology, Medical College, 2 Department of Hematology, First Affiliated Hospital, 3 Key Laboratory for Regenerative Medicine of Ministry of Education, Jinan University, Guangzhou 510632, China
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Fozza C, Corda G, Barraqueddu F, Virdis P, Contini S, Galleu A, Isoni A, Dore F, Angelucci E, Longinotti M. Azacitidine improves the T-cell repertoire in patients with myelodysplastic syndromes and acute myeloid leukemia with multilineage dysplasia. Leuk Res 2015. [DOI: 10.1016/j.leukres.2015.06.007] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Abstract
Flow cytometry-based analysis of T-cell receptor (TCR) repertoires is an essential tool for the detection of clonal T-cell expansions in physiologic and pathologic conditions. Individual T-cell subsets can be investigated based on their surface properties. The aims of our study were to provide reference values for various disease settings and delineate the contribution of individual TCR repertoires to the human T-cell differentiation pathway. We analyzed blood of 66 healthy subjects aged 0 (cord blood) to 72 years. Lymphocyte subpopulations and TCR repertoires were simultaneously explored using antibodies specific to CD3, CD4, CD8, CD45RA, CCR7, CD27, CD57 and a set of 25 antibodies detecting human TCR-Vβ chains. Statistical analysis included Wilcoxon, paired t and ANOVA tests. Initially, TCR expansion values were calculated based on the analysis of TCR-Vβ distribution on CD4+ and CD8+ T cells. We then established gating strategies and an algorithm for data analysis allowing for discrimination of T-cell subsets and TCR distribution. Dominant TCR expansions were present within effector as opposed to central/effector memory or naive cells, e.g., median TCR-Vβ expansion rate was highest on CD45RA+/CCR7- effector CD4+/8+ cells (eight and 11-fold, respectively). Remarkably, TCR expansions were missing (0) or very low (0.5) on CD4+ and CD8+ central memory population, respectively. No significant gender-related variability of TCR repertoires was identified, and significant impact of chronic cytomegalovirus infection was shown. Our results serve as reference for future studies elucidating clonal TCR dominance of T-cell subsets.
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Fozza C, Corda G, Virdis P, Contini S, Barraqueddu F, Galleu A, Isoni A, Cossu A, Dore F, Careddu MG, Bonfigli S, Giannico B, Longinotti M. Derangement of the T-cell repertoire in patients with B-cell non-Hodgkin's lymphoma. Eur J Haematol 2014; 94:298-309. [DOI: 10.1111/ejh.12417] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/11/2014] [Indexed: 02/02/2023]
Affiliation(s)
- Claudio Fozza
- Department of Biomedical Sciences; University of Sassari; Sassari Italy
| | - Giovanna Corda
- Department of Biomedical Sciences; University of Sassari; Sassari Italy
| | - Patrizia Virdis
- Department of Biomedical Sciences; University of Sassari; Sassari Italy
| | - Salvatore Contini
- Department of Biomedical Sciences; University of Sassari; Sassari Italy
| | | | - Antonio Galleu
- Department of Biomedical Sciences; University of Sassari; Sassari Italy
| | - Antonella Isoni
- Department of Biomedical Sciences; University of Sassari; Sassari Italy
| | - Antonella Cossu
- Department of Biomedical Sciences; University of Sassari; Sassari Italy
| | - Fausto Dore
- Department of Biomedical Sciences; University of Sassari; Sassari Italy
| | - Maria G. Careddu
- Department of Biomedical Sciences; University of Sassari; Sassari Italy
| | - Silvana Bonfigli
- Department of Biomedical Sciences; University of Sassari; Sassari Italy
| | - Barbara Giannico
- Department of Biomedical Sciences; University of Sassari; Sassari Italy
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Li Y. T-cell immune suppression in patients with hematologic malignancies: clinical implications. Int J Hematol Oncol 2014. [DOI: 10.2217/ijh.14.23] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
SUMMARY The reversion of immune suppression and restoration of T-cell function against leukemia remains a significant clinical challenge. However, the advent of improved antileukemia-specific T-cell induction and the generation of gene-modified T cells has extended cellular immunotherapy to hematological malignancies. Numerous immunotherapeutic protocols have been developed aiming to enhance antileukemia T-cell immune function, eliminate leukemic cells and prevent relapse. By contrast, abnormal expression of CTLA-4 and PD1/PD-L1 plays a critical role in effector T-cell responses and increases Treg suppressive activity in patients with tumors; therefore, blocking CTLA-4, PD1 and PD-L1 is a novel approach for immunotherapy.
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Fozza C. Emerging immunological concepts in the pathogenesis of myelodysplastic syndromes. World J Hematol 2013; 2:13-15. [DOI: 10.5315/wjh.v2.i2.13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2013] [Revised: 02/06/2013] [Accepted: 03/27/2013] [Indexed: 02/05/2023] Open
Abstract
The involvement of T-lymphocytes in the pathogenesis of myelodysplastic syndromes (MDS) is now well documented by relevant clinical and experimental findings. This brief review will focus on the T-cell repertoire pattern typical of MDS patients as well as on the potential role exerted by specific T-cell subsets in this context. Future investigations should further explore the specific role played by different T-cell subsets in the bone marrow milieu typical of MDS, further clarifying which of the described changes represent either an epiphenomenon or rather a real causative factor in the pathogenesis of these disorders.
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