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Unknown,Transcriptomics,Genomics,Proteomics

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Smad3, Smad4 and TTF-1/NKX2-1 binding sites in H441/A549 lung cancer cell lines

ABSTRACT: We evaluated the role of TTF-1/NKX2-1 on Smad3 and Smad4 binding in lung cancer cell lines. Smad3 binding sites in A549 cells and Smad3, Smad4, and TTF-1/NKX2-1 binding sites in H441 cells were determined by ChIP-seq.

ORGANISM(S): Homo sapiens

SUBMITTER: Daizo Koinuma

PROVIDER: E-GEOD-51509 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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A Smad3 and TTF-1/NKX2-1 complex regulates Smad4-independent gene expression.

Isogaya Kazunobu K Koinuma Daizo D Tsutsumi Shuichi S Saito Roy-Akira RA Miyazawa Keiji K Aburatani Hiroyuki H Miyazono Kohei K

Cell research 20140725 8

Thyroid transcription factor-1 (TTF-1, also known as NKX2-1) is a tissue-specific transcription factor in lung epithelial cells. Although TTF-1 inhibits the epithelial-to-mesenchymal transition induced by transforming growth factor-β (TGF-β) in lung adenocarcinoma cells, the mechanism through which TTF-1 inhibits the functions of TGF-β is unknown. Here we show that TTF-1 disrupts the nuclear Smad3-Smad4 complex without affecting the nuclear localization of phospho-Smad3. Genome-wide analysis by ...[more]

PMID: 25060702

Similar Datasets

Smad3, Smad4 and TTF-1/NKX2-1 binding sites in H441/A549 lung cancer cell lines

Project description:We evaluated the role of TTF-1/NKX2-1 on Smad3 and Smad4 binding in lung cancer cell lines.

2014-07-27 | GSE51509 | GEO

Expression data of human lung adenocarcinoma cell line H441 treated with TTF-1/NKX2-1 siRNA and TGF-beta

Project description:We determined and analyzed the effect of TTF-1/NKX2-1 on Smad3/Smad4 binding sites by ChIP-sequencing. We used expression microarrays to evaluate the effect of TTF-1/NKX2-1 siRNA on TGF-beta-induced gene expressions. H441 cells were transfected with siRNAs and treated with TGF-beta for RNA extraction and hybridization on Affymetrix microarrays. This submission represents transcriptome component of study.

2014-07-27 | E-GEOD-49675 | biostudies-arrayexpress

Expression data of human lung adenocarcinoma cell line H441 treated with TTF-1/NKX2-1 siRNA and TGF-beta

2014-07-27 | GSE49675 | GEO

Effect of TTF-1/NKX2-1 expression on TGF-beta induced gene expression in A549 lung cancer cell line.

Project description:TTF-1/NKX2-1 was expressed by adenoviral vector and changes in gene expression were determined by RNA-sequencing. A549 cells were infected with Ad-TTF-1 or Ad-LacZ vectors and stimulated with TGF-beta for 24 hours or left untreated. Expression of polyA RNA was determined.

2014-07-27 | E-GEOD-56356 | biostudies-arrayexpress

TTF-1/NKX2-1 and ASCL1 binding regions in NCI-H209 and NKX2-1 binding regions in NCI-H441, replicate 2

2019-11-30 | GSE139868 | GEO

RNA-seq transcriptome analysis in NCI-H209 and NCI-H441 cells transfected with TTF-1/NKX2-1 or ASCL1 siRNAs.

Project description:Although Thyroid transcription factor-1 (TTF-1, encoded by NKX2-1 gene) is highly expressed in small cell lung carcinoma (SCLC) and lung adenocarcinoma (LADC), difference in the functional roles of TTF-1 between SCLC and LADC remains to be elucidated. The aim of this study was to clarify the differences in the TTF-1 binding regions and functional roles in SCLC and LADC. Employing chromatin immunoprecipitation-sequencing (ChIP-seq) , here we compared the genome-wide TTF-1-binding profiles and the TTF-1-mediated transcriptional programs in a SCLC and a LADC cell lines. We also investigated ASCL1 binding regions in SCLC cells. To validate whether the changes in TTF-1 or ASCL1 binding to the genome indeed resulted in changes in target gene expression, we performed RNA-seq transcriptome analyses in H209 cells with TTF-1 or ASCL1 knockdown. Data were also obtained from H441 cells transfected with TTF-1 siRNAs.

2019-11-30 | GSE129340 | GEO

Homo sapiens

Project description:Smad3, Smad4 and TTF-1/NKX2-1 binding sites in H441/A549 lung cancer cell lines

| PRJNA223330 | ENA

Chromatin and Transcriptional Signatures for Nodal Signaling During Endoderm Formation in hESCs

Project description:To elucidate the Nodal transcriptional network that governs endoderm formation, we used ChIP-Seq to identify genomic targets for SMAD2/3, SMAD3, SMAD4, FOXH1 and the active and repressive chromatin marks, H3K4me3 and H3K27me3, in human embryonic stem cells (hESCs) and derived endoderm. We demonstrate that while SMAD2/3, SMAD4 and FOXH1 target binding is highly dynamic, there is an optimal signature for driving endoderm commitment. Initially, this signature is marked by both H3K4me3 and H3K27me3 as a very broad bivalent domain in hESCs. Within the first 24 hours, at a few select promoters, SMAD2/3 accumulation coincides with H3K27me3 depletion so that these loci become selectively monovalent marked only by H3K4me3. The correlation between SMAD2/3 binding, monovalent formation and transcriptional activation suggests a mechanism by which SMAD proteins coordinate with chromatin at critical promoters to drive endoderm specification. Examination of 2 different histone modifications and 4 different transcription factor associations in 2 cell types. For transcription factor analysis, three biological replicate ChIPs were pooled from each antibody, as well as input controls, for both hESCs and derived endoderm. For histone modifications, two biological replicates for H3K4me3 and three for H3K27me3 were used.

2011-05-21 | E-GEOD-29422 | biostudies-arrayexpress

Project description:Role of TTF-1/NKX2-1, Smad3 and Smad4 on lung cancer cell lines

| PRJNA223329 | ENA

Expression data of NCI-H441 cells stably expressing hsa-mir-365-2 vs empty vector

Project description:Hsa-mir-365-2 is one of the two precursors that give rise to miR-365. We discovered that miR-365 directly regulates a lung cancer and developmental gene termed thyroid transcription factor 1 (TTF-1 or NKX2-1). Hsa-mir-365-2 was transfected into NCI-H441 cells via retrovirus-mediated gene transfer. Arrays hybridized: Affymetrix GeneChip Human Gene 1.0 ST Array.

2011-11-15 | GSE33672 | GEO

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