| First Author | Xie X | Year | 2010 |
| Journal | Proc Natl Acad Sci U S A | Volume | 107 |
| Issue | 19 | Pages | 8754-9 |
| PubMed ID | 20421478 | Mgi Jnum | J:160302 |
| Mgi Id | MGI:4454211 | Doi | 10.1073/pnas.0913126107 |
| Citation | Xie X, et al. (2010) MHC class I D(k) expression in hematopoietic and nonhematopoietic cells confers natural killer cell resistance to murine cytomegalovirus. Proc Natl Acad Sci U S A 107(19):8754-9 |
| abstractText | NK cell-mediated murine cytomegalovirus (MCMV) resistance (Cmv(r)) is under H-2(k) control in MA/My mice, but the underlying gene(s) is unclear. Prior genetic analysis mapped Cmv(r) to the MHC class I (MHC-I) D(k) gene interval. Because NK cell receptors are licensed by and responsive to MHC class I molecules, D(k) itself is a candidate gene. A 10-kb genomic D(k) fragment was subcloned and microinjected into MCMV-susceptible (Cmv(s)) (MA/My.L-H2(b) x C57L)F(1) or (B6 x DBA/2)F(2) embryos. Transgenic founders, which are competent for D(k) expression and germline transgene transmission, were identified and further backcrossed to MA/My.L-H2(b) or C57L mice. Remarkably, D(k) expression delivered NK-mediated resistance in either genetic background. Further, NK cells with cognate inhibitory Ly49G receptors for self-MHC-I D(k) were licensed and critical in protection against MCMV infection. In radiation bone marrow chimeras, NK resistance was significantly diminished when MHC-I D(k) expression was restricted to only hematopoietic or nonhematopoietic cells. Thus, MHC-I D(k) is the H-2(k)-linked Cmv(r) locus; these findings suggest a role for NK cell interaction with D(k)-bearing hematopoietic and nonhematopoietic cells to shape NK-mediated virus immunity. |
