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| 1 |
16223768
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NK-cell activation by LIGHT triggers tumor-specific CD8+ T-cell immunity to reject established tumors.
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| 2 |
16223768
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We now demonstrate that the TNF superfamily member, LIGHT, known as TNFSF14 and a T-cell costimulatory molecule, is a critical ligand for the activation of NK cells.
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| 3 |
16223768
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Herpesvirus entry mediator (HVEM) is expressed on NK cells, and its engagement with LIGHT mediates NK-cell activation.
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| 4 |
16223768
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Interestingly, activated NK cells do not kill tumors directly but can facilitate the priming of tumor-specific CD8+ T cells in an IFN-gamma-dependent manner.
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| 5 |
16223768
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Conversely, intratumor depletion of either NK cells or IFN-gamma during tumor progression disrupts CD8+ cell-mediated tumor rejection, suggesting that the tumor is the essential site for the crosstalk between NK and CD8+ cells.
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| 6 |
16223768
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Furthermore, IFNG-deficient NK cells fail to effectively activate CD8+ T cells, suggesting IFN-gamma plays an important role in NK-mediated activation of cytotoxic T lymphocytes (CTLs).
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| 7 |
16223768
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Our findings establish a direct role for LIGHT in NK activation/expansion and a critical helper role of activated NK cells in priming CD8+ T cells and breaking T-cell tolerance at the tumor site.
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