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2017 ; 12
(5
): e0175918
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English Wikipedia
The role of the innate immune response regulatory gene ABCF1 in mammalian
embryogenesis and development
#MMPMID28542262
Wilcox SM
; Arora H
; Munro L
; Xin J
; Fenninger F
; Johnson LA
; Pfeifer CG
; Choi KB
; Hou J
; Hoodless PA
; Jefferies WA
PLoS One
2017[]; 12
(5
): e0175918
PMID28542262
show ga
ABCF1 is an ABC transporter family protein that has been shown to regulate innate
immune response and is a risk gene for autoimmune pancreatitis and arthritis.
Unlike other members of ABC transporter family, ABCF1 lacks trans-membrane
domains and is thought to function in translation initiation through an
interaction with eukaryotic translation initiation factor 2 (eIF2). To study
ABCF1 expression and function in development and disease, we used a single gene
trap insertion in the Abcf1 gene in murine embryonic stem cells (ES cells) that
allowed lineage tracing of the endogenous Abcf1 promoter by following the
expression of a ?-galactosidase reporter gene. From the ES cells, heterozygous
mice (Abcf1+/-) were produced. No live born Abcf1-/- progeny were ever generated,
and the lethality was not mouse strain-specific. Thus, we have determined that
Abcf1 is an essential gene in development. Abcf1-/- mice were found to be
embryonic lethal at 3.5 days post coitum (dpc), while Abcf1+/- mice appeared
developmentally normal. Abcf1+/- mice were fertile and showed no significant
differences in their anatomy when compared with their wild type littermates. The
Abcf1 promoter was found to be active in all organs in adult mice, but varies in
levels of expression in specific cell types within tissues. Furthermore, we
observed high promoter activity in the blastocysts and embryos. Overall, Abcf1
expression in embryos is required for development and its expression in adults
was highly correlated with actively proliferating and differentiating cell types.