dsRNA Sensing Induces Loss of Cell Identity.
dsRNA Sensing Induces Loss of Cell Identity.
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DOI:
10.1016/j.jid.2018.07.021
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发表时间:
2019-01
期刊:
影响因子:
--
通讯作者:
Garza LA
中科院分区:
文献类型:
--
作者:
Zhou R;Wang G;Kim D;Kim S;Islam N;Chen R;Wang Z;Li A;McCarthy EF;Li L;Hu Z;Garza LA
How cell and tissue identity persist despite constant cell turnover is an important biologic question with cell therapy implications. Although many mechanisms exist, we investigated the controls for site-specific gene expression in skin, given its diverse structures and functions. For example, the transcriptome of in vivo pal-moplantar (i.e., volar) epidermis is globally unique, including Keratin 9 (KRT9). Although volar fibroblasts have the capacity to induce KRT9 in nonvolar keratinocytes, we show here that volar keratinocytes continue to express KRT9 in in vitro solo cultures. Despite this, KRT9 expression is lost with volar keratinocyte passaging, despite stable hypomethylation of its promoter. Coincident with KRT9 loss is a gain of the primitive keratin 7 and a signature of dsRNA sensing, including the double-stranded RNA (dsRNA) receptor DExD/H-Box Helicase 58 (DDX58/RIG-I). Exogenous dsRNA inhibits KRT9 expression in early passage volar keratinocytes or in vivo footpads of wild-type mice. Loss of DDX58 in passaged volar keratinocytes rescues KRT9 and inhibits KRT7 expression. Additionally, DDX58-null mice are resistant to the ability of dsRNA to inhibit KRT9 expression. These results show that the sensing of dsRNA is critical for loss of cell-specific gene expression;our results have important implications for how dsRNA sensing is important outside of immune pathways.
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影响因子:
6.5
作者:
Fu, Dun Jack;Thomson, Calum;Lunny, Declan P.;Dopping-Hepenstal, Patricia J.;McGrath, John A.;Smith, Frances J. D.;McLean, W. H. Irwin;Pedrioli, Deena M. Leslie
通讯作者:
Pedrioli, Deena M. Leslie
影响因子:
64.5
作者:
Wu X;Dao Thi VL;Huang Y;Billerbeck E;Saha D;Hoffmann HH;Wang Y;Silva LAV;Sarbanes S;Sun T;Andrus L;Yu Y;Quirk C;Li M;MacDonald MR;Schneider WM;An X;Rosenberg BR;Rice CM
通讯作者:
Rice CM
DOI:
10.1016/j.jid.2016.04.026
发表时间:
2016-08
期刊:
The Journal of investigative dermatology
影响因子:
--
作者:
Botchkarev VA;Mardaryev AN
通讯作者:
Mardaryev AN
影响因子:
21.1
作者:
Xu XX;Wan H;Nie L;Shao T;Xiang LX;Shao JZ
通讯作者:
Shao JZ
影响因子:
158.5
作者:
BILLINGHAM, RE;SILVERS, WK
通讯作者:
SILVERS, WK