scholarly journals Borrelia burgdorferi activates a T helper type 1-like T cell subset in Lyme arthritis.

1991 ◽  
Vol 174 (3) ◽  
pp. 593-601 ◽  
Author(s):  
H Yssel ◽  
M C Shanafelt ◽  
C Soderberg ◽  
P V Schneider ◽  
J Anzola ◽  
...  
Keyword(s):  
T Cell ◽  
Borrelia Burgdorferi ◽  
Cell Subset ◽  
Chronic Inflammatory Disease ◽  
T Cell Response ◽  
Lyme Arthritis ◽  
T Helper ◽  
Cell Clones ◽  
T Cell Lines

18 cloned T cell lines reactive with Borrelia burgdorferi proteins, all CD3+4+8-TCR-alpha/beta+ and restricted by HLA class II proteins, were isolated from four patients with chronic Lyme arthritis. Analysis of these T cell clones indicated that the T cell response to the Lyme disease spirochete is not oligoclonally restricted; yet all produced the same pattern of lymphokines, resembling that of murine type 1 T helper cells, after antigen-specific or nonspecific stimulation. Therefore, a subset of human CD4+ T cells, with a distinct profile of lymphokine secretion, is selectively activated by the pathogen inciting this chronic inflammatory disease.

scholarly journals The T helper cell response in Lyme arthritis: differential recognition of Borrelia burgdorferi outer surface protein A in patients with treatment-resistant or treatment-responsive Lyme arthritis.

1994 ◽  
Vol 180 (6) ◽  
pp. 2069-2078 ◽  
Author(s):  
B Lengl-Janssen ◽  
A F Strauss ◽  
A C Steere ◽  
T Kamradt
Keyword(s):  
T Cell ◽  
Borrelia Burgdorferi ◽  
Cell Lines ◽  
Outer Surface ◽  
Cell Response ◽  
T Cell Response ◽  
Surface Proteins ◽  
Lyme Arthritis ◽  
Treatment Resistant ◽  
T Cell Lines

The host response to Borrelia burgdorferi is likely to play a role in the pathogenesis of Lyme arthritis. Whereas most patients with Lyme arthritis can be cured with antibiotic therapy, approximately 10% of the patients have persistent arthritis for months or even several years after antibiotic treatment. In this study, we tested the hypothesis that the T cell response to one or more antigens of B. burgdorferi is different in patients with treatment-responsive or treatment-resistant Lyme arthritis. For this purpose, 313 B. burgdorferi-specific T cell lines were derived from the synovial fluid or peripheral blood of four patients with treatment-responsive Lyme arthritis and five patients with treatment-resistant arthritis. 87 T cell lines from treatment-responsive Lyme arthritis and 112 lines from the treatment-resistant group were examined for the recognition of five recombinant. B. burgdorferi proteins: outer surface proteins A (OspA), B, C, p39, and p93. In both groups of patients, the T cell lines frequently recognized OspB, and only occasionally recognized OspC, p39, and p93. In contrast, OspA was preferentially recognized by T cell lines from patients with treatment-resistant arthritis, but only rarely recognized by T cell lines from patients with treatment-responsive arthritis (odds ratio 28.4, 95% confidence interval 9.2-87.8, p < 0.005). These results are compatible with the hypothesis that the T cell response to B. burgdorferi OspA is involved in the pathogenesis of treatment-resistant Lyme arthritis.

scholarly journals Augmented induction of CD8+ cytotoxic T-cell response and antitumour resistance by T helper type 1-inducing peptide

Immunology ◽  
2006 ◽  
Vol 117 (1) ◽  
pp. 47-58 ◽  
Author(s):  
Takeshi Kikuchi ◽  
Shuichiro Uehara ◽  
Haruyuki Ariga ◽  
Takeshi Tokunaga ◽  
Ai Kariyone ◽  
...  
Keyword(s):  
T Cell ◽  
Cell Response ◽  
T Cell Response ◽  
Cytotoxic T Cell ◽  
T Helper ◽  
Helper Type

scholarly journals Selection of a human T helper type 1-like T cell subset by mycobacteria.

1991 ◽  
Vol 174 (3) ◽  
pp. 583-592 ◽  
Author(s):  
J B Haanen ◽  
R de Waal Malefijt ◽  
P C Res ◽  
E M Kraakman ◽  
T H Ottenhoff ◽  
...  
Keyword(s):  
T Cells ◽  
T Cell ◽  
Cytokine Secretion ◽  
T Helper ◽  
Ifn Gamma ◽  
T Cell Clones ◽  
Cell Clones ◽  
Tuberculoid Leprosy ◽  
Helper Type

Mycobacteria elicit a cellular immune response in their hosts. This response usually leads to protective immunity, but may sometimes be accompanied by immunopathology due to delayed type hypersensitivity (DTH). A striking example in man is tuberculoid leprosy, which is characterized by high cellular immunity to Mycobacterium leprae and immunopathology due to DTH. Skin lesions of patients suffering from this disease have the characteristics of DTH reactions in which macrophages and CD4+ T lymphocytes predominate. In animal models, it has been shown that DTH responses are associated with the presence of a particular subset of CD4+ T cells (T helper type 1 [Th1]) that secrete only certain cytokines, such as interleukin 2 (IL-2), interferon gamma (IFN-gamma), and lymphotoxin, but no IL-4 or IL-5. We studied the cytokine release of activated M. leprae-reactive CD4+ T cell clones derived from tuberculoid leprosy patients. These T cell clones, which were reactive with mycobacterial heat shock proteins, exhibited a Th1-like cytokine secretion pattern with very high levels of IFN-gamma. Half of these clones secreted low levels of IL-4 and IL-5, but the ratio of IFN-gamma to IL-4 and IL-5 was much higher than that of T cell clones reactive with nonmycobacterial antigens. A Th1-like cytokine secretion pattern was also observed for T cell clones and polyclonal T cell lines from control individuals that recognized both heat shock and other mycobacterial antigens. The levels of IFN-gamma secreted by these clones were, however, significantly less than those of patient-derived T cell clones. This Th1-like pattern was not found with T cell clones from the same patients and healthy individuals generated in the same manner, but reactive with nonmycobacterial antigens. Our data thus indicate that mycobacteria selectively induce human T cells with a Th1-like cytokine secretion profile.

scholarly journals Characterization of Human Immunodeficiency Virus Type 1 (HIV-1) Gag- and Gag Peptide-Specific CD4+ T-Cell Clones from an HIV-1-Seronegative Donor following In Vitro Immunization

2002 ◽  
Vol 76 (14) ◽  
pp. 6987-6999 ◽  
Author(s):  
Sara Venturini ◽  
Donald E. Mosier ◽  
Dennis R. Burton ◽  
Pascal Poignard
Keyword(s):  
Immune Response ◽  
T Cell ◽  
T Cell Response ◽  
T Cell Clones ◽  
Seronegative Donor ◽  
Cell Clones ◽  
Immunodeficiency Virus ◽  
Hiv 1

ABSTRACT Substantial evidence argues that human immunodeficiency virus type 1 (HIV-1)-specific CD4+ T cells play an important role in the control of HIV-1 replication in infected individuals. Moreover, it is increasingly clear that an HIV vaccine should elicit potent cytotoxic lymphocyte and antibody responses that will likely require an efficient CD4+ T-cell response. Therefore, understanding and characterizing HIV-specific CD4+ T-cell responses is an important aim. Here we describe the generation of HIV-1 Gag- and Gag peptide-specific CD4+ T-cell clones from an HIV-1-seronegative donor by in vitro immunization with HIV-1 Gag peptides. The Gag peptides were able to induce a strong CD4+ T-cell immune response in peripheral blood mononuclear cells from the HIV-1-seronegative donor. Six Gag peptide-specific CD4+ T-cell clones were isolated and their epitopes were mapped. The region of p24 between amino acids 201 and 300 of Gag was defined as the immunodominant region of Gag. A new T helper epitope in the p6 protein of Gag was identified. Two clones were shown to recognize Gag peptides and processed Gag protein, while the other four clones reacted only to Gag peptides under the experimental conditions used. Functional analysis of the clones indicated that both Th1 and Th2 types of CD4+ T cells were obtained. One clone showed direct antigen-specific cytotoxic activity. These clones represent a valuable tool for understanding the cellular immune response to HIV-1, and the study provides new insights into the HIV-1-specific CD4+ T-cell response and the induction of an anti-Gag and -Gag peptide cellular primary immune response in vitro.

scholarly journals Natural killer cell stimulatory factor (interleukin 12 [IL-12]) induces T helper type 1 (Th1)-specific immune responses and inhibits the development of IL-4-producing Th cells.

1993 ◽  
Vol 177 (4) ◽  
pp. 1199-1204 ◽  
Author(s):  
R Manetti ◽  
P Parronchi ◽  
M G Giudizi ◽  
M P Piccinni ◽  
E Maggi ◽  
...  
Keyword(s):  
T Cell ◽  
Cell Lines ◽  
Cd4 T Cell ◽  
Interleukin 12 ◽  
T Helper ◽  
Ifn Gamma ◽  
T Cell Clones ◽  
Cell Clones ◽  
T Cell Lines ◽  
Helper Type

The effects exerted on the in vitro development of antigen-specific T cell lines and T cell clones by addition or neutralization of interleukin 12 (IL-12) in lymphocyte bulk culture were examined. T cell lines specific for Dermatophagoides pteronyssinus group I (Der p I) derived in the presence of IL-12 exhibited reduced ability to produce IL-4 and increased ability to produce interferon gamma (IFN-gamma), and developed into Der p I-specific CD4+ T cell clones showing a T helper type 0 (Th0)- or Th1-, instead of Th2-, like cytokine profile. In contrast, purified protein derivative (PPD)-specific T cell lines derived in the presence of anti-IL-12 antibody exhibited an increased ability to produce IL-4 and developed into PPD-specific CD4+ T cell clones showing a Th0-, instead of Th1-, like profile. The influence of IL-12 on the cytokine secretion profile of Der p I-specific T cell lines was not prevented by addition to lymphocyte bulk cultures of anti-IFN-gamma antibody, but could be at least partially inhibited by the removal from bulk cultures of CD16+ cells. Thus, IL-12 and CD16+ cells appear to have inhibitory effects on the development of IL-4-producing cells and to play an inductive role in promoting Th1-like responses.

scholarly journals Priming of a β-Galactosidase (β-GAL)-Specific Type 1 Response in BALB/c Mice Infected with β-GAL-Transfected Leishmania major

2000 ◽  
Vol 68 (2) ◽  
pp. 809-814 ◽  
Author(s):  
Hrishekesh R. Chakkalath ◽  
Afzal A. Siddiqui ◽  
Anuraj H. Shankar ◽  
Deborah E. Dobson ◽  
Stephen M. Beverley ◽  
...  
Keyword(s):  
T Cell ◽  
Leishmania Major ◽  
T Cell Response ◽  
Cd4 T Cell ◽  
Interleukin 4 ◽  
Th2 Response ◽  
C3h Mice ◽  
Ifn Γ ◽  
T Cell Lines

ABSTRACT To determine whether an ongoing response to Leishmania major would affect the response to a non-cross-reacting, non-leishmanial antigen, susceptible BALB/c mice and resistant C3H mice were infected with L. major parasites expressingEscherichia coli β-galactosidase (β-GAL); this parasite was designated L. major-βGAL. BALB/c and C3H mice responded to infection with L. major-βGAL by mounting a CD4 T-cell response to both parasite antigens and to the reporter antigen, β-GAL. The phenotypes of these T cells were characterized after generating T-cell lines from infected mice. As expected, BALB/c mice responded to infection with L. major-βGAL by producing interleukin 4 in response to the parasite and C3H mice produced gamma interferon (IFN-γ) in response to the parasite and β-GAL. Interestingly, however, BALB/c mice produced IFN-γ in response to β-GAL. Taken together, these results demonstrate that priming of IFN-γ-producing cells can occur in BALB/c mice despite the fact the animals are simultaneously mounting a potent Th2 response toL. major.

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