| First Author | Kambayashi T | Year | 2001 |
| Journal | Eur J Immunol | Volume | 31 |
| Issue | 3 | Pages | 869-75 |
| PubMed ID | 11241292 | Mgi Jnum | J:119264 |
| Mgi Id | MGI:3701597 | Doi | 10.1002/1521-4141(200103)31:3<869::aid-immu869>3.0.co;2-a |
| Citation | Kambayashi T, et al. (2001) Purified MHC class I molecules inhibit activated NK cells in a cell-free system in vitro. Eur J Immunol 31(3):869-75 |
| abstractText | Natural killer cells have been shown to interact with MHC class I molecules via inhibitory receptors. However, it is not known whether the inhibition induced by MHC class I molecules requires other NK cell-target cell interactions. Thus, we examined whether purified MHC class I molecules alone were able to inhibit NK cell function. Purified H-2K(b) and H-2D(b) molecules inhibited the release of IFN-gamma from spleen (H-2(b))-derived lymphokine-activated killer (LAK) cell cultures stimulated by anti-NK1.1 antibody in a concentration-dependent manner. LAK cells generated from newborn mice that express low levels of MHC class I binding Ly49 inhibitory receptors were significantly less sensitive to inhibition by H-2K(b) compared to LAK cells from adult mice. Furthermore, LAK cells generated from spleen cells of Ly49C-transgenic mice were significantly more sensitive to inhibition by H-2K(b) compared to non-transgenic littermates. Taken together, the data indicate that MHC class I induced inhibition of NK cell mediated effector functions, as assessed by IFN-gamma release after NK1.1 triggering, does not require additional cell surface molecules other than MHC class I. |
