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2013 ; 121
(15
): 3033-40
Nephropedia Template TP
gab.com Text
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A new approach for eradication of residual lymphoma cells by host nonreactive
anti-third-party central memory CD8 T cells
#MMPMID23446736
Lask A
; Ophir E
; Or-Geva N
; Cohen-Fredarow A
; Afik R
; Eidelstein Y
; Reich-Zeliger S
; Nathansohn B
; Edinger M
; Negrin RS
; Hagin D
; Reisner Y
Blood
2013[Apr]; 121
(15
): 3033-40
PMID23446736
show ga
Generation of T cells endowed with graft-versus-leukemia (GVL) and depleted of
graft-versus-host (GVH) activity represents a highly desirable goal in bone
marrow transplantation (BMT). Here, we demonstrate that donor anti-third-party
CD8 T cells with central memory phenotype (Tcm) exhibit marked GVL reactivity
through a unique T-cell receptor-independent mechanism. Thus, in a residual
disease mouse model, Tcm therapy following autologous BMT led to significant
survival prolongation, with 30% to 40% of the treated mice displaying long-term
tumor-free survival. A more impressive finding was that infusion of donor Tcm in
an allogeneic model rapidly eliminated residual lymphoma cells and led to
long-term survival of 100% in the absence of GVH disease. Collectively, the
strong GVL reactivity of anti-third-party Tcm, coupled with their demonstrated
enhancement of bone marrow allografting, suggests that the use of Tcm therapy in
conjunction with allogeneic T-cell-depleted BMT could be of particular benefit in
patients with B-cell malignancies who cannot tolerate intensive myeloablative
conditioning.