Dynamic Chromatin Modification Sustains Epithelial-Mesenchymal Transition following Inducible Expression of Snail-1 (ChIP-chip)

ABSTRACT: Epithelial-Mesenchymal Transition (EMT) is thought to contribute to cancer metastasis, but its underlying mechanisms are not well understood. To define early steps in this cellular transformation, we analyzed human mammary epithelial cells with tightly regulated expression of Snail-1, a master regulator of EMT. Following Snail-1 induction, epithelial markers were repressed within 6 hours and mesenchymal genes induced at 24 hours. Snail-1 binding to its target promoters was transient (6-48 hours) despite continued protein expression and it was followed by both transient and long-lasting chromatin changes. To generate a potent reversible EMT-inducing stimulus, we created a Snail-1 retroviral expression construct, using a fused estrogen receptor (ER) response element to mediate regulation by

ORGANISM(S): Homo sapiens

SUBMITTER: Ben Wittner 

PROVIDER: E-GEOD-52591 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress