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Lung adenocarcinoma metastasis is suppressed by the alveolar lineage transcription factors GATA6 and HOPX.

ABSTRACT: Molecular programs that mediate normal cell differentiation are required for oncogenesis and tumor cell survival in certain cancers. How cell-lineage-restricted genes specifically influence metastasis is poorly defined. In lung cancers, we uncovered a transcriptional program that is preferentially associated with distal airway epithelial differentiation and lung adenocarcinoma (ADC) progression. This program is regulated in part by the lineage transcription factors GATA6 and HOPX. These factors can cooperatively limit the metastatic competence of ADC cells, by modulating overlapping alveolar differentiation and invasogenic target genes. Thus, GATA6 and HOPX are critical nodes in a lineage-selective pathway that directly links effectors of airway epithelial specification to the inhibition of metastasis in the lung ADC subtype.

ORGANISM(S): Homo sapiens

PROVIDER: GSE39121 | GEO | 2013/06/10

SECONDARY ACCESSION(S): PRJNA170053

REPOSITORIES: GEO

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Lung adenocarcinoma metastasis is suppressed by the alveolar lineage transcription factors GATA6 and HOPX.

Project description:Molecular programs that mediate normal cell differentiation are required for oncogenesis and tumor cell survival in certain types of cancers. How cell lineage restricted genes specifically influence metastatic progression is poorly defined. In lung cancers, we uncovered an alveolar cell-selective transcriptional program that preferentially correlates with lung adenocarcinoma metastasis. This program is required for epithelial specification in the distal airways and is partially regulated by the lineage transcription factors GATA6 and HOPX. These factors cooperatively restrain the metastatic competence of adenocarcinoma cells, without affecting their survival, through the modulation of alveologenic and invasogenic target genes. Thus, GATA6 and HOPX are critical nodes in a lineage-selective pathway that directly links alveolar cell fate with metastasis suppresion in the lung adenocarcinoma subtype. mRNA profiles of human lung Adenocarcinoma PC9 cell lines infected with lentivirus harboring shRNA of control (Arab1) and shRNA of both GATA6 and HOPX were generated by deep sequencing, in triplicate, using Illumina HiSeq2000.

2013-06-10 | E-GEOD-39121 | biostudies-arrayexpress

Role of Hopx in myogenesis and commitment [HopxKO]

Project description:Progenitor cells require coordinated expression of lineage-specific genes to regulate differentiation into daughter cell types. Hopx labels cardiac progenitors that are commited to the cardiac myocyte lineage. Hopx-deficiency leads to thin myocardium in approximately mid-gestation lethality in approximately 50% of embryos (secondary to thin myocardium and presumed cardiac rupture). Hopx-/- EBs display impaired myogenesis during cardiac differentiation. ChIP-seq and RNA expression analysis suggests that Hopx down regulates Wnt signaling by directly occupying and repressing wnt ligand genes. Analysis of embryoid bodies on day 8 of cardiac differentiation. RNA was made of from 1. Hopx +/- embryoid bodies, 2. Hopx -/- embryoid bodies, Embryonic stem cell lines were derived from littermate mouse blastocysts. Results provide insight into gene programs regulated by Hopx in cardiac development.

2015-06-01 | GSE67253 | GEO

Role of Hopx in myogenesis and commitment [HopxKO+Wnt]

Project description:Progenitor cells require coordinated expression of lineage-specific genes to regulate differentiation into daughter cell types. Hopx labels cardiac progenitors that are commited to the cardiac myocyte lineage. Hopx-deficiency leads to thin myocardium in approximately mid-gestation lethality in approximately 50% of embryos (secondary to thin myocardium and presumed cardiac rupture). Hopx-/- EBs display impaired myogenesis during cardiac differentiation. ChIP-seq and RNA expression analysis suggests that Hopx down regulates Wnt signaling by directly occupying and repressing wnt ligand genes. Analysis of embryoid bodies on day 8 of cardiac differentiation. RNA was made of from Hopx +/- embryoid bodies or Hopx -/- embryoid bodies treated with 12.5 uM XAV939. Heterozygous embryoid bodies included 0 uM XAV939, a well-characterized, known Wnt inhibitor. Embryonic stem cell lines were derived from littermate mouse blastocysts. Results provide insight into gene programs regulated by Hopx in cardiac development.

2015-06-01 | GSE67252 | GEO

Plasticity of Hopx+ Type I alveolar cells to regenerate Type II cells in the lung

Project description:Hopx is a transcription co-factor expressed during lung development and we wanted to profile Hopx +/+ and -/- embyonic lungs. Results inform the role of Hopx in embryonic lung development We used microarrays to profile the transcriptome of Hopx -/- lungs compared to Hopx +/+ lungs. Lungs were microdissected and three biological replicates were used for each genotype.

2015-02-10 | E-GEOD-65755 | biostudies-arrayexpress

E-GEOD-39121

Project description:Lung adenocarcinoma metastasis is suppressed by the alveolar lineage transcription factors GATA6 and HOPX.

2019-05-14 | E-GEOD-39121 | ExpressionAtlas

Plasticity of Hopx+ Type I alveolar cells to regenerate Type II cells in the lung

2015-02-10 | GSE65755 | GEO

Homo sapiens

Project description:Lung adenocarcinoma metastasis is suppressed by the alveolar lineage transcription factors GATA6 and HOPX.

| PRJNA170053 | ENA

Persistence of effector memory Th1 cells is regulated by the homeobox only protein Group1 Hopx-/-, Group2 Hopx+/-, Group3 Hopx+/+

Project description:Hopx appears to be needed for persistence of Th1 effector memory cells. IFN-gamma-producing Th cells are significantly reduced in Hopx-deficient mice compared to Hopx-expressing littermates and Hopx-deficient Th1 cells show a defective persistence upon adoptive transfer. Moreover, Hopx protects Th1 cells from Fas-mediated cell death in vitro. To further dissect the role of Hopx and to identify target genes of Hopx, we have performed transcriptome analysis to compare gene expression in Hopx-deficient versus Hopx-competent Th1 cells. In agreement with the role of Hopx in supporting survival of Th1 effector memory cells, anti-apoptotic cells were up-regulated and pro-apoptotic genes were down-regulated in Hopx-competent compared to Hopx-deficient Th1 cells.

2010-09-30 | GSE24437 | GEO

Next generation sequencing for quantitative transcriptomic analysis of Hopx-wildtype and Hopx-knockout murine bone marrow cells.

Project description:We generated Hopx conditional knockout mouse (Hopx-/-) and studied the biological effects of Hopx knockout on the hematopoietic system, via whole-transcriptome RNA-seq. The findigns of our studies support crucial roles of Hopx in physiological and malignant hematopoiesis.

2023-02-18 | GSE145476 | GEO

Epigenetic and transcriptional analysis of mesoderm progenitor cells identifies HOPX as a novel regulator of hemogenic endothelium

Project description:We analyzed chromatin dynamics and transcriptional activity of human embryonic stem cell (hESC)-derived cardiac progenitor cells (CPCs) and KDR+/CD34+ endothelial cells generated from cardiogenic or hemogenic mesoderm. Using an unbiased algorithm to hierarchically rank genes modulated at the level of chromatin and transcription, we identified novel candidate regulators of mesodermal lineage determination. HOPX, a non-DNA binding homeodomain protein, was identified as a candidate regulator of blood-forming endothelial cells. We used HOPX reporter and knockout hESCs, as well as hopx loss of function studies in zebrafish, to show the requirement of HOPX in vivo and in vitro in hemato-endothelial lineage specification. Loss of HOPX does not impact endothelial fate specification but markedly reduces primitive hematopoiesis acting at least in part through suppression of Wnt/β-catenin signaling. Single cell RNA-seq data during mouse hematopoietic development in vivo confirm a role for HOPX in hematopoietic fate. Taken together, we show that HOPX is a novel regulator of hemato-endothelial fate specification in vitro and in vivo that functionally regulates Wnt signaling to modulate primitive hematopoiesis.

2017-08-16 | GSE97080 | GEO

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