Primary immune responses to human CMV: a critical role for IFN-γ–producing CD4+ T cells in protection against CMV disease

Gamadia, Laila E.; Remmerswaal, Ester B. M.; Weel, Jan; Bemelman, F. J.; Lier, R. A. W. Van; Berge, Ineke J. M. ten

doi:10.1182/blood-2002-08-2502

Cited by 383 publications

(370 citation statements)

References 49 publications

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“…Likewise, loss of CD27 is a very late event occurring on CMV-specific T cells after primary infection [37]. To analyze modulation of CD27 expression on antigen-specific T cells after stimulation in vivo, primary and secondary influenza A virus infections were performed.…”

Section: Cd27 Expression Is Lost After Repetitive Stimulation In Vivomentioning

confidence: 99%

Properties of murine CD8+CD27- T cells

et al. 2005

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Section: Cd27 Expression Is Lost After Repetitive Stimulation In Vivomentioning

confidence: 99%

Properties of murine CD8+CD27- T cells

et al. 2005

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“…22,23 Effective immune responses have been shown to depend on both CD4 + and CD8 + T lymphocytes. 24,25 In the absence of CD4 helper cells, CTLs were less protective against challenge with a pathogen. Furthermore, helper T lymphocytes have been found to be important for the development of T-cell memory.…”

Section: Introductionmentioning

confidence: 99%

HLA class II restricted T-cell receptor gene transfer generates CD4+ T cells with helper activity as well as cytotoxic capacity

et al. 2005

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Both cytotoxic T cells and helper T cells are important in immune responses against pathogens and malignant cells.In hematological malignancies which express HLA class II molecules, immunotherapy may be directed to HLA class II restricted antigens. We investigated whether it is possible to engineer HLA class II restricted T cells with both antigenspecific cytolytic activity and the capacity to produce high amounts of cytokines. CD4 + and CD8 + peripheral-bloodderived T cells were retrovirally transduced with the HLA class II restricted minor histocompatibility antigen dead box RNA helicase Y (DBY)-specific TCR. The TCR-transduced CD4 + T cells exerted DBY-specific cytolytic activity, produced Th0, Th1, or Th2 cytokines, and proliferated upon DBY-specific stimulation. TCR-transduced CD8 + T cells exerted cytolytic activity which equaled the level of cytolytic activity of the TCR-transferred CD4 + T cells. Cotransfer of CD4 enhanced the cytolytic activity of the TCR-transduced CD8 + T cells, but introduction of CD4 was not sufficient to generate DBY-specific CD8 + T cells with the capacity to produce high amounts of cytokines. In this study, we demonstrated the feasibility to engineer T cells with antigen-specific cytolytic activity, as well as the ability to produce significant amounts of cytokines, by TCR transfer to CD4 + T cells. Gene Therapy (2005) IntroductionPatients relapsing from leukemia after allogeneic stem cell transplantation can successfully be treated by donor lymphocyte infusions (DLI), due to the graft-versusleukemia (GVL) response of the donor-derived T cells. [1][2][3][4] However, DLI is also associated with graft-versus-hostdisease (GVHD). Several studies have illustrated that depletion of CD8 + T cells from the DLI may preserve the beneficial GVL reactivity without the induction of GVHD, indicating that the CD4 + T lymphocytes may play an essential role in the antileukemic reactivity. [5][6][7][8][9][10] The mechanism by which the CD4 + T cells contribute to the GVL response is, however, not known. CD4 + T cells have been suggested to elicit the antileukemic response via the induction of minor histocompatibility antigen (mHag)-specific CD8 + T cells. 5 In addition, mHag-specific CD4 + T-helper cells have been reported to mature dendritic cells and enhance the expansion of mHag-specific cytotoxic T lymphocytes in vitro. 11 Alternatively, we have demonstrated that CD4 + T cells are capable of exerting direct cytolytic activity against leukemic cells. [12][13][14] Cellular immunotherapeutic approaches based on the adoptive transfer of T lymphocytes may require large cell numbers. Large numbers of T cells with a defined antigen specificity can be acquired by retroviral transfer of the T-cell receptor to peripheral-blood-derived T lymphocytes. Until now, the application of retroviral transfer of TCRs has mainly been limited to the transfer of HLA class I restricted TCRs. [15][16][17][18][19][20] However, the specificity of HLA class II restricted T lymphocytes can also be transferred to other T c...

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“…Analysis of virusspecific T cells during acute infections with EBV, HIV, or CMV revealed that early effector T cells are clearly distinct from the effector-type CD45RA ϩ CD27 Ϫ T cells found in latently infected persons. T cells expanding early in immune responses have CD45R0, CD28, CD27 surface expression, express the G 1 phaseassociated nuclear Ag Ki-67, and contain perforin and granzyme B (12)(13)(14). These observations raised questions about the generation of CD45RA ϩ CD27 Ϫ T cells and their role in protective immunity (10).…”

mentioning

confidence: 99%

The Size and Phenotype of Virus-Specific T Cell Populations Is Determined by Repetitive Antigenic Stimulation and Environmental Cytokines

Gamadia

Leeuwen

Remmerswaal³

et al. 2004

The Journal of Immunology

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108

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Based on the expression of the TNFR SFP CD27, two Ag-primed CD8+ T cell subsets can be discerned in the circulation of healthy individuals: CD27+ T cells that produce a variety of cytokines but do not display immediate cytolytic activity; and cytotoxic CD27− T cells, which secrete only IFN-γ and TNF-α. The mechanism that controls the generation of these different phenotypes is unknown. We show that CMV reactivation not only increases the number of virus-specific T cells but also induces their transition from a CD27+ to a CD27− phenotype. In support of a relation between pool size and phenotype in a cohort of latently infected individuals, the number of Ag-specific CD27− CD8+ T cells was found to be linearly related to the total number of CMV-specific CD8+ T cells. In vitro studies revealed that the acquisition of the CD27− phenotype on CMV-specific T cells depended on the interaction of CD27 with its cellular ligand, CD70. Expression of CD70 was proportional to the amount of antigenic stimulation and blocked by the CD4+ T cell-derived cytokine IL-21. Thus, induction of CD70, which may vary in distinct viral infections, appears to be a key factor in determining the size and phenotype of the CMV-specific T cell population in latently infected individuals.

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Primary immune responses to human CMV: a critical role for IFN-γ–producing CD4+ T cells in protection against CMV disease

Cited by 383 publications

References 49 publications

Properties of murine CD8+CD27- T cells

Properties of murine CD8+CD27- T cells

HLA class II restricted T-cell receptor gene transfer generates CD4+ T cells with helper activity as well as cytotoxic capacity

The Size and Phenotype of Virus-Specific T Cell Populations Is Determined by Repetitive Antigenic Stimulation and Environmental Cytokines

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