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Transgene number-dependent, gene expression rate-independent rejection of Dd -, Kd-, or Dd Kd -transgened mouse skin or tumor cells from C57BL/6 Db Kb mice.

Abstract：

:Recipient cells migrating into the transplantation site of an allograft recognize histocompatibility antigens on the grafts and are cytotoxic against the grafts. Although the alloreactive immune response is predominantly directed at the major histocompatibility complex (major histocompatibility complex [MHC]; H-2 in mice) class I molecules, the basic mechanisms of allograft rejection (e.g., ligand-receptor interaction) remain unclear, because of the polymorphism and complexity of the MHC. To examine the role of MHC class I molecules in allograft rejection, D(d) , K(d) or D(d) K(d) -transgenic skin or tumor cells we established on a C57BL/6 (D(b) K(b) ) background and transplanted into C57BL/6 mice. Skin grafts from allogeneic (i.e., BALB/c, B10.D2, and BDF1) strains of mice were rejected from C57BL/6 mice on days 12-14 after grafting, whereas isografts were tolerated by these mice. Unexpectedly, skin grafts from D(d) -, K(d) -, and D(d) K(d) -transgenic C57BL/6 mice were rejected on days 12-14 in a transgene expression rate-independent manner from 9/19 (47%), 20/39 (51%), and 12/17 (71%) of C57BL/6 mice, respectively. Similarly, intradermally transplanted allogeneic (i.e., Meth A), but not syngeneic (i.e., EL-4), tumor cells were rejected from C57BL/6 mice; the growth of D(d) - or K(d) -transfected EL-4 cells was delayed by 10-13 days; and 4/10 (40%) of D(d) K(d) -transfected tumor cells were rejected from C57BL/6 mice. These results indicate that D(d) and K(d) genes are equivalent as allogeneic MHC class I genes and that C57BL/6 (D(b) K(b) ) mice reject D(d) -, K(d) -, or D(d) K(d) -transgened skin or tumor cells in a transgene number-dependent, gene expression rate-independent manner.

journal_name

Microbiol Immunol

journal_title

Microbiology and immunology

authors

Inoue Y,Tashiro-Yamaji J,Hayashi M,Kiyonari H,Shimizu T,Ibata M,Yamana H,Kubota T,Tanigawa N,Yoshida R

doi

10.1111/j.1348-0421.2011.00337.x

subject

Has Abstract

pub_date

2011-06-01 00:00:00

pages

446-53

issue

eissn

0385-5600

issn

1348-0421

journal_volume

pub_type

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Transgene number-dependent, gene expression rate-independent rejection of Dd -, Kd-, or Dd Kd -transgened mouse skin or tumor cells from C57BL/6 Db Kb mice.