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2017 ; 9
(5
): 1692-1705
Nephropedia Template TP
gab.com Text
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English Wikipedia
Oocyte-Specific Homeobox 1, Obox1, Facilitates Reprogramming by Promoting
Mesenchymal-to-Epithelial Transition and Mitigating Cell Hyperproliferation
#MMPMID29033306
Wu L
; Wu Y
; Peng B
; Hou Z
; Dong Y
; Chen K
; Guo M
; Li H
; Chen X
; Kou X
; Zhao Y
; Bi Y
; Wang Y
; Wang H
; Le R
; Kang L
; Gao S
Stem Cell Reports
2017[Nov]; 9
(5
): 1692-1705
PMID29033306
show ga
Mammalian oocytes possess fascinating unknown factors, which can reprogram
terminally differentiated germ cells or somatic cells into totipotent embryos.
Here, we demonstrate that oocyte-specific homeobox 1 (Obox1), an oocyte-specific
factor, can markedly enhance the generation of induced pluripotent stem cells
(iPSCs) from mouse fibroblasts in a proliferation-independent manner and can
replace Sox2 to achieve pluripotency. Overexpression of Obox1 can greatly promote
mesenchymal-to-epithelial transition (MET) at early stage of OSKM-induced
reprogramming, and meanwhile, the hyperproliferation of THY1-positive cells can
be significantly mitigated. Subsequently, the proportion of THY1-negative cells
and Oct4-GFP-positive cells increased dramatically. Further analysis of gene
expression and targets of Obox1 during reprogramming indicates that the
expression of Obox1 can promote epithelial gene expression and modulate
cell-cycle-related gene expression. Taken together, we conclude that the
oocyte-specific factor Obox1 serves as a strong activator for somatic cell
reprogramming through promoting the MET and mitigating cell hyperproliferation.