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PMID |
Sentence |
1 |
14613519
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BACKGROUND: Allergic subjects produce relatively low amounts of IFN-gamma, a pleiotropic Th-1 cytokine that downregulates Th2-associated airway inflammation and hyperresponsiveness (AHR), the hallmarks of allergic asthma.
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2 |
14613519
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Adenovirus-mediated IFN-gamma gene transfer reduces AHR, Th2 cytokine levels and lung inflammation in mice, but its use would be limited by the frequency of gene delivery required; therefore, we tested chitosan/IFN-gamma pDNA nanoparticles (CIN) for in situ production of IFN-gamma and its in vivo effects.
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3 |
14613519
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Production of IFN-gamma is increased after CIN treatment while the Th2-cytokines, IL-4 and IL-5, and OVA-specific serum IgE are reduced compared to control mice.
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4 |
14613519
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Experiments performed on STAT4-defective mice do not show reduction in AHR with CIN treatment, thus implicating STAT4 signaling in the mechanism of CIN action.
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5 |
15688366
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To determine the mechanism of the anti-tumor effect, intrasplenic lymphocyte populations were analyzed by FACS for NKT, CD4+ and CD8+ lymphocyte subpopulations; STAT 1, 4 and 6 expression in splenocytes was assessed by Western blot, and serum cytokine levels were measured by ELISA.
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6 |
15688366
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NKT/CD4 and CD8/CD4 ratios were significantly increased in groups A and E (12.3 and 17.6 in groups A and D, respectively, compared to 6.4, 4.8 and 5.6 in groups B, C and D, respectively, for the NKT/CD4 ratio; 41 and 19.8 in groups A and E, respectively, compared to 6.5, 11.8 and 3.2 in groups B, C, and D, respectively, for the CD8/CD4 ratio).
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7 |
15688366
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Serum IFNgamma, IL12 and IL4 levels were increased in groups A and E.
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8 |
15688366
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NKT-mediated anti-tumor activity was associated increased NKT and CD8+ T lymphocyte numbers, increased expression of STAT4, a marker for IL-12 activity and elevated serum levels of the proinflammatory cytokines IFNgamma and IL12, and of IL4.
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9 |
15905564
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IL-12/23 p40(-/-) and IFN-gamma(-/-) mice, which were able to reject the initial inoculation of IL-4 expressing tumors, failed to mount a sustained systemic response against parental (nontransfected) tumor cells.
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10 |
15905564
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Adoptive transfer of TIDCs isolated from vaccinated wild-type, but not IL-12/23 p40(-/-), mice were capable of promoting tumor-specific CTL responses in syngeneic recipient animals.
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11 |
15905564
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Interestingly, both STAT4(-/-) and STAT6(-/-) mice failed to reject IL-4-transfected tumors in concert with the reduced capacity of TIDCs to produce IL-12p70 and to promote specific antitumor CTL reactivity.
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12 |
18071585
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Using STAT4(-/-) mice, we found that modulated IFN gamma secretion in wt TDLN cells after anti-CD3/CD28/4-1BB activation in vitro was lost in similarly stimulated STAT4(-/-) TDLN cells.
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13 |
18071585
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Additionally, anti-4-1BB administration failed to augment the therapeutic efficacy of T cell therapy in STAT4(-/-) mice.
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14 |
18071585
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Together, these results indicate that administered anti-4-1BB mAb can serve as an effective adjuvant to augment the antitumor reactivity of adoptively transferred T cells by recruiting the host NK cells; increasing the persistence of infused effector T cells, and modulating the STAT4 molecular signaling pathway.
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15 |
18071585
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Using STAT4(-/-) mice, we found that modulated IFN gamma secretion in wt TDLN cells after anti-CD3/CD28/4-1BB activation in vitro was lost in similarly stimulated STAT4(-/-) TDLN cells.
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16 |
18071585
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Additionally, anti-4-1BB administration failed to augment the therapeutic efficacy of T cell therapy in STAT4(-/-) mice.
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17 |
18071585
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Together, these results indicate that administered anti-4-1BB mAb can serve as an effective adjuvant to augment the antitumor reactivity of adoptively transferred T cells by recruiting the host NK cells; increasing the persistence of infused effector T cells, and modulating the STAT4 molecular signaling pathway.
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18 |
18071585
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Using STAT4(-/-) mice, we found that modulated IFN gamma secretion in wt TDLN cells after anti-CD3/CD28/4-1BB activation in vitro was lost in similarly stimulated STAT4(-/-) TDLN cells.
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19 |
18071585
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Additionally, anti-4-1BB administration failed to augment the therapeutic efficacy of T cell therapy in STAT4(-/-) mice.
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20 |
18071585
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Together, these results indicate that administered anti-4-1BB mAb can serve as an effective adjuvant to augment the antitumor reactivity of adoptively transferred T cells by recruiting the host NK cells; increasing the persistence of infused effector T cells, and modulating the STAT4 molecular signaling pathway.
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21 |
22493516
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We further demonstrate that a STAT4-dependent IFN-γ-independent mechanism contributes toward the generation of memory NK cells during MCMV infection.
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