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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Am+J+Transplant
2014 ; 14
(12
): 2869-73
Nephropedia Template TP
gab.com Text
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English Wikipedia
Bone marrow-derived hematopoietic stem and progenitor cells infiltrate allogeneic
and syngeneic transplants
#MMPMID25387427
Fan Z
; Enjoji K
; Tigges JC
; Toxavidis V
; Tchipashivili V
; Gong W
; Strom TB
; Koulmanda M
Am J Transplant
2014[Dec]; 14
(12
): 2869-73
PMID25387427
show ga
Lineage (CD3e, CD11b, GR1, B220 and Ly-76) negative hematopoietic stem cells
(HSCs) and hematopoietic progenitor cells (HPCs) infiltrate islet allografts
within 24?h posttransplantation. In fact, lineage(negative) Sca-1(+) cKit(+)
("LSK") cells, a classic signature for HSCs, were also detected among these graft
infiltrating cells. Lineage negative graft infiltrating cells are functionally
multi-potential as determined by a standard competitive bone marrow transplant
(BMT) assay. By 3 months post-BMT, both CD45.1 congenic, lineage negative
HSCs/HPCs and classic "LSK" HSCs purified from islet allograft infiltrating
cells, differentiate and repopulate multiple mature blood cell phenotypes in
peripheral blood, lymph nodes, spleen, bone marrow and thymus of CD45.2 hosts.
Interestingly, "LSK" HSCs also rapidly infiltrate syngeneic islet transplants as
well as allogeneic cardiac transplants and sham surgery sites. It seems likely
that an inflammatory response, not an adaptive immune response to allo-antigen,
is responsible for the rapid infiltration of islet and cardiac transplants by
biologically active HSCs/HPCs. The pattern of hematopoietic differentiation
obtained from graft infiltrating HSCs/HPCs, cells that are recovered from
inflammatory sites, as noted in the competitive BMT assay, is not precisely the
same as that of intramedullary HSCs. This does not refute the obvious
multi-lineage potential of graft infiltrating HSCs/HPCs.