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2015 ; 5
(ä): 9882
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Efficient in vitro generation of functional thymic epithelial progenitors from
human embryonic stem cells
#MMPMID26044259
Su M
; Hu R
; Jin J
; Yan Y
; Song Y
; Sullivan R
; Lai L
Sci Rep
2015[Jun]; 5
(ä): 9882
PMID26044259
show ga
Thymic epithelial cells (TECs) are the major components of the thymic
microenvironment for T cell development. TECs are derived from thymic epithelial
progenitors (TEPs). It has been reported that human ESCs (hESCs) can be directed
to differentiate into TEPs in vitro. However, the efficiency for the
differentiation is low. Furthermore, transplantation of hESC-TEPs in mice only
resulted in a very low level of human T cell development from co-transplanted
human hematopoietic precursors. We show here that we have developed a novel
protocol to efficiently induce the differentiation of hESCs into TEPs in vitro.
When transplanted into mice, hESC-TEPs develop into TECs and form a thymic
architecture. Most importantly, the hESC-TECs support the long-term development
of functional mouse T cells or a higher level of human T cell development from
co-transplanted human hematopoietic precursors. The hESC-TEPs may provide a new
approach to prevent or treat patients with T cell immunodeficiency.