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M9610406.TXT
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1996-01-30
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Document 0406
DOCN M9610406
TI Rapid rejection of H2k and H2k/b bone marrow cell grafts by CD8+ T cells
and NK cells in irradiated mice.
DT 9601
AU Davenport C; Kumar V; Bennett M; Department of Pathology, University of
Texas Southwestern Medical; Center, Dallas, TX 75235, USA.
SO J Immunol. 1995 Oct 15;155(8):3742-9. Unique Identifier : AIDSLINE
MED/96003411
AB Acute rejection of transplanted bone marrow cell (BMC) grafts can occur
within 48 h in unsensitized, lethally irradiated mice, and NK cells have
been implicated as the effector cells. Recently, we observed that both
CD8+ TCR-alpha beta+ T and NK cells of irradiated mice could rapidly
reject allogeneic lymph node cell grafts. In this study, we evaluated
the ability of NK and CD8+ T cells to mediate rejection of H2k or H2k/b
BMC grafts by pretreating groups of mice with depleting mAbs. H2k BMC
were transplanted into syngeneic, B6 (H2b), BALB/c (H2d), NZB (H2d), and
(NZB x B6)F1 (NZB6F1, H2d/b) hosts. Proliferation measured 5 days after
cell transfer indicated that syngeneic, B6, and BALB/c hosts accepted
H2k BMC grafts. However, CD8+ T cells from NZB and poly I:C-treated
BALB/c hosts, and NK cells from poly I:C-treated NZB6F1, hosts, rejected
H2k BMC grafts. In NZB6F1 hosts, there was an added effect of
anti-TCR-alpha beta and anti-NK1.1 mAbs. It is possible that T and NK
cells cooperate in rejecting H2k or H2k/b BMC grafts in certain hosts.
Transplantation of H2k/b, but not H2k/d, BMC into similar recipients had
the same fate as H2k BMC. Thus, certain CD8+ T cells may share a similar
recognition system with NK cells.
DE Animal Bone Marrow Transplantation/*IMMUNOLOGY Crosses, Genetic
CD8-Positive T-Lymphocytes/*IMMUNOLOGY *Graft Rejection H-2
Antigens/GENETICS/*IMMUNOLOGY Killer Cells, Natural/*IMMUNOLOGY Mice
Mice, Inbred BALB C Mice, Inbred CBA Mice, Inbred C57BL Mice, Inbred
NZB Radiation Chimera Receptors, Antigen, T-Cell,
alpha-beta/IMMUNOLOGY Support, Non-U.S. Gov't Support, U.S. Gov't,
P.H.S. JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).