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Rolf N, Smolen KK, Kariminia A, Velenosi A, Fidanza M, Strahlendorf C, Seif AE, Reid GSD. Absolute lymphocyte counts at end of induction correlate with distinct immune cell compartments in pediatric B cell precursor acute lymphoblastic leukemia. Cancer Immunol Immunother 2018; 67:225-236. [PMID: 29052781 PMCID: PMC11028201 DOI: 10.1007/s00262-017-2070-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Accepted: 09/26/2017] [Indexed: 01/10/2023]
Abstract
Several retrospective studies in children with B cell precursor (BCP) acute lymphoblastic leukemia (ALL) provided clinical evidence that higher absolute lymphocyte counts (ALC) early into treatment significantly correlated with improved relapse-free and overall survival. It still remains unknown, however, whether the predictive role of higher ALCs reflects general bone marrow recovery or a more specific attribute of immune function. To investigate this question, we implemented a prospective observational cohort study in 20 children with BCP ALL on day 29 (D29) of induction chemotherapy and immunophenotyped their lymphoid (T, B and natural killer cells) and myeloid (neutrophils, monocytes, dendritic cells) compartments. In a first evaluation of a cohort treated with Children's Oncology Group-based induction chemotherapy, the immune cell compartments were differentially depleted at D29. Neither gender, risk status, minimal residual disease, nor bone marrow recovery markers correlated with D29 ALC. In contrast, both CD3+ T cell and dendritic cell compartments, which did not correlate with age, significantly correlated with D29 ALC (p < 0.0001). In addition, subset complexity of cellular immune compartments was preserved at D29. This study reveals that D29 ALC significantly correlates with distinct immune cell compartments but not with bone marrow recovery markers, suggesting that higher D29 ALCs may contribute to leukemia control by inducing specific host immune activity.
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Affiliation(s)
- Nina Rolf
- Michael Cuccione Childhood Cancer Research Program, BC Children's Hospital Research Institute, 950 West 28th Avenue, Reid Lab (Room 3062), Vancouver, BC, V5Z 4H4, Canada.
- Division of Pediatric Hem/Onc/BMT, Department of Pediatrics, University of British Columbia, Vancouver, BC, Canada.
| | - Kinga K Smolen
- Experimental Medicine Program, University of British Columbia, Vancouver, BC, Canada
| | - Amina Kariminia
- Michael Cuccione Childhood Cancer Research Program, BC Children's Hospital Research Institute, 950 West 28th Avenue, Reid Lab (Room 3062), Vancouver, BC, V5Z 4H4, Canada
| | - Adam Velenosi
- Department of Pathology and Laboratory Medicine, BC Children's Hospital Biobank, Vancouver, BC, Canada
| | - Mario Fidanza
- Michael Cuccione Childhood Cancer Research Program, BC Children's Hospital Research Institute, 950 West 28th Avenue, Reid Lab (Room 3062), Vancouver, BC, V5Z 4H4, Canada
- Experimental Medicine Program, University of British Columbia, Vancouver, BC, Canada
| | - Caron Strahlendorf
- Division of Pediatric Hem/Onc/BMT, Department of Pediatrics, University of British Columbia, Vancouver, BC, Canada
| | - Alix E Seif
- Center for Childhood Cancer Research, The Children's Hospital of Philadelphia and Abramson Family Cancer Research Institute, University of Pennsylvania, Philadelphia, PA, USA
| | - Gregor S D Reid
- Michael Cuccione Childhood Cancer Research Program, BC Children's Hospital Research Institute, 950 West 28th Avenue, Reid Lab (Room 3062), Vancouver, BC, V5Z 4H4, Canada
- Division of Pediatric Hem/Onc/BMT, Department of Pediatrics, University of British Columbia, Vancouver, BC, Canada
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Pachulec E, Neitzke-Montinelli V, Viola JPB. NFAT2 Regulates Generation of Innate-Like CD8 + T Lymphocytes and CD8 + T Lymphocytes Responses. Front Immunol 2016; 7:411. [PMID: 27766099 PMCID: PMC5052263 DOI: 10.3389/fimmu.2016.00411] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Accepted: 09/22/2016] [Indexed: 11/13/2022] Open
Abstract
Nuclear factor of activated T cells (NFAT) 2 null mutant mice die in utero of cardiac failure, precluding analysis of the role of NFAT2 in lymphocyte responses. Only the NFAT2-/-/Rag-1-/- chimeric mice model gave insight into the role of NFAT2 transcription factor in T lymphocyte development, activation, and differentiation. As reports are mainly focused on the role of NFAT2 in CD4+ T lymphocytes activation and differentiation, we decided to investigate NFAT2's impact on CD8+ T lymphocyte responses. We report that NFAT2 is phosphorylated and inactive in the cytoplasm of naive CD8+ T cells, and upon TCR stimulation, it is dephosphorylated and translocated into the nucleus. To study the role of NFAT2 in CD8+ T responses, we employed NFAT2fl/flCD4-Cre mice with NFAT2 deletion specifically in T cells. Interestingly, the absence of NFAT2 in T cells resulted in increased percentage of non-conventional innate-like CD8+ T cells. These cells were CD122+, rapid producer of interferon gamma (IFN-γ) and had characteristics of conventional memory CD8+ T cells. We also observed an expansion of PLZF+ expressing CD3+ thymocyte population in the absence of NFAT2 and increased IL-4 production. Furthermore, we found that CD8+ T lymphocytes deficient in NFAT2 had reduced activation, proliferation, and IFN-γ and IL-2 production at suboptimal TCR strength. NFAT2 absence did not significantly influence differentiation of CD8+ T cells into cytotoxic effector cells but reduced their IFN-γ production. This work documents NFAT2 as a negative regulator of innate-like CD8+ T cells development. NFAT2 is required for complete CD8+ T cell responses at suboptimal TCR stimulation and regulates IFN-γ production by cytotoxic CD8+ T cells in vitro.
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Affiliation(s)
- Emilia Pachulec
- Program of Cellular Biology, Brazilian National Cancer Institute (INCA) , Rio de Janeiro , Brazil
| | | | - João P B Viola
- Program of Cellular Biology, Brazilian National Cancer Institute (INCA) , Rio de Janeiro , Brazil
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Hu J, Sahu N, Walsh E, August A. Memory phenotype CD8+ T cells with innate function selectively develop in the absence of active Itk. Eur J Immunol 2007; 37:2892-9. [PMID: 17724684 PMCID: PMC2770953 DOI: 10.1002/eji.200737311] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
T cells with a memory-like phenotype and possessing innate immune function have been previously identified as CD8(+)CD44(hi) cells. These cells rapidly secrete IFN-gamma upon stimulation with IL-12/IL-18 and are involved in innate responses to infection with Listeria monocytogenes. The signals regulating these cells are unclear. The Tec kinase Itk regulates T cell activation and we report here that a majority of the CD8(+) T cells in Itk null mice have a phenotype of CD44(hi) similar to memory-like innate T cells. These cells are observed in mice carrying an Itk mutant lacking the kinase domain, indicating that active Tec kinase signaling suppresses their presence. These cells carry preformed message for and are able to rapidly produce IFN-gamma upon stimulation in vitro with IL-12/IL-18, and endow Itk null mice the ability to effectively respond to infection with L. monocytogenes or exposure to lipopolysaccharides by secretion of IFN-gamma. Transfer of these cells rescues the ability of IFN-gamma null mice to reduce bacterial burden following L. monocytogenes infection, indicating that these cells are functional CD8(+)CD44(hi) T cells previously detected in vivo. These results indicate that active signals from Tec kinases regulate the development of memory-like CD8(+) T cells with innate function.
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Affiliation(s)
- Jianfang Hu
- Center for Molecular Immunology & Infectious Disease and Department of Veterinary & Biomedical Sciences, The Pennsylvania State University, University Park, PA 16802
- Immunology & Infectious Disease Graduate Program, The Pennsylvania State University, University Park, PA 16802
| | - Nisebita Sahu
- Center for Molecular Immunology & Infectious Disease and Department of Veterinary & Biomedical Sciences, The Pennsylvania State University, University Park, PA 16802
- Department of Biochemistry & Molecular Biology, The Pennsylvania State University, University Park, PA 16802
| | - Elizabeth Walsh
- Center for Molecular Immunology & Infectious Disease and Department of Veterinary & Biomedical Sciences, The Pennsylvania State University, University Park, PA 16802
- Pathobiology Graduate Program, The Pennsylvania State University, University Park, PA 16802
| | - Avery August
- Center for Molecular Immunology & Infectious Disease and Department of Veterinary & Biomedical Sciences, The Pennsylvania State University, University Park, PA 16802
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