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2016 ; 17
(2
): ä Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Apobec-1 Complementation Factor (A1CF) Inhibits Epithelial-Mesenchymal Transition
and Migration of Normal Rat Kidney Proximal Tubular Epithelial Cells
#MMPMID26848653
Huang L
; Wang H
; Zhou Y
; Ni D
; Hu Y
; Long Y
; Liu J
; Peng R
; Zhou L
; Liu Z
; Lyu Z
; Mao Z
; Hao J
; Li Y
; Zhou Q
Int J Mol Sci
2016[Feb]; 17
(2
): ä PMID26848653
show ga
Apobec-1 complementation factor (A1CF) is a member of the heterogeneous nuclear
ribonucleoproteins (hnRNP) family, which participates in site-specific
posttranscriptional RNA editing of apolipoprotein B (apoB) transcript. The
posttranscriptional editing of apoB mRNA by A1CF in the small intestine is
required for lipid absorption. Apart from the intestine, A1CF mRNA is also
reported to be highly expressed in the kidneys. However, it is remained unknown
about the functions of A1CF in the kidneys. The aim of this paper is to explore
the potential functions of A1CF in the kidneys. Our results demonstrated that in
C57BL/6 mice A1CF was weakly expressed in embryonic kidneys from E15.5dpc while
strongly expressed in mature kidneys after birth, and it mainly existed in the
tubules of inner cortex. More importantly, we identified A1CF negatively
regulated the process of epithelial-mesenchymal transition (EMT) in kidney
tubular epithelial cells. Our results found ectopic expression of A1CF
up-regulated the epithelial markers E-cadherin, and down-regulated the
mesenchymal markers vimentin and ?-smooth muscle actin (?-SMA) in NRK52e cells.
In addition, knockdown of A1CF enhanced EMT contrary to the overexpression
effect. Notably, the two A1CF variants led to the similar trend in the EMT
process. Taken together, these data suggest that A1CF may be an antagonistic
factor to the EMT process of kidney tubular epithelial cells.