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Yap/Taz inhibit goblet cell fate to maintain lung epithelial homeostasis.

ABSTRACT: Proper lung function relies on the precise balance of specialized epithelial cells that coordinate to maintain homeostasis. Herein, we describe essential roles for the transcriptional regulators YAP/TAZ in maintaining lung epithelial homeostasis, reporting that conditional deletion of Yap and Wwtr1/Taz in the lung epithelium of adult mice results in severe defects, including alveolar disorganization and the development of airway mucin hypersecretion. Through in vivo lineage tracing and in vitro molecular experiments, we reveal that reduced YAP/TAZ activity promotes intrinsic goblet transdifferentiation of secretory airway epithelial cells. Global gene expression and chromatin immunoprecipitation sequencing (ChIP-seq) analyses suggest that YAP/TAZ act cooperatively with TEA domain (TEAD) transcription factors and the NuRD complex to suppress the goblet cell fate program, directly repressing the SPDEF gene. Collectively, our study identifies YAP/TAZ as critical factors in lung epithelial homeostasis and offers molecular insight into the mechanisms promoting goblet cell differentiation, which is a hallmark of many lung diseases.

SUBMITTER: Hicks-Berthet J

PROVIDER: S-EPMC8346236 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Yap/Taz inhibit goblet cell fate to maintain lung epithelial homeostasis

Project description:Proper lung function relies on precisely balanced numbers of specialized epithelial cell types that work together and are maintained in homeostasis. We describe essential roles for the transcriptional regulators Yap and Taz, which are key effectors of Hippo pathway signaling, in maintaining lung epithelial homeostasis. We report that conditional deletion of Yap1/Yap and Wwtr1/Taz in the lung epithelium of adult mice results in severe defects with consequent animal lethality. Phenotypes associated with Yap/Taz deletion include alveolar defects and a striking development of goblet cell metaplasia throughout the airways. We performed gene expression analysis of wild type and Yap/Taz null primary mouse airway epithelial cells in order to define Yap/Taz controlled gene expression.

2021-08-09 | GSE156525 | GEO

Yap/Taz inhibit goblet cell fate to maintain lung epithelial homeostasis

Project description:This SuperSeries is composed of the SubSeries listed below.

2021-08-19 | GSE158307 | GEO

Yap/Taz inhibit goblet cell fate to maintain lung epithelial homeostasis (RNA-seq)

Project description:Proper lung function relies on precisely balanced numbers of specialized epithelial cell types that work together and are maintained in homeostasis. In this study we have described essential roles for the transcriptional regulators YAP and TAZ, which are key effectors of Hippo pathway signaling, in maintaining lung epithelial homeostasis. Phenotypes associated with Yap/Taz deletion include alveolar defects and a striking development of goblet cell metaplasia throughout the airways. Knockdown of YAP and TAZ in HBECs similarly drives mucin expression. The TEAD family of transcription factors are well characterized partners of the YAP/TAZ transcriptional effectors, and we have found that knockdown of TEAD1-4 similarly drives elevated mucin expression. In order to further understand the role of the TEAD transcription factors in human lung epithelial cell fate, we conducted TEAD Chromatin Immunopreciptitation (ChIP)-Sequencing.

2021-08-19 | GSE158305 | GEO

Yap/Taz inhibit goblet cell fate to maintain lung epithelial homeostasis (ChIP-seq)

Project description:Proper lung function relies on precisely balanced numbers of specialized epithelial cell types that work together and are maintained in homeostasis. In this study we have described essential roles for the transcriptional regulators YAP and TAZ, which are key effectors of Hippo pathway signaling, in maintaining lung epithelial homeostasis. Phenotypes associated with Yap/Taz deletion include alveolar defects and a striking development of goblet cell metaplasia throughout the airways. Knockdown of YAP and TAZ in HBECs similarly drives mucin expression. The TEAD family of transcription factors are well characterized partners of the YAP/TAZ transcriptional effectors, and we have found that knockdown of TEAD1-4 similarly drives elevated mucin expression. In order to further understand the role of the TEAD transcription factors in human lung epithelial cell fate, we conducted TEAD Chromatin Immunopreciptitation (ChIP)-Sequencing.

2021-08-19 | GSE158306 | GEO

Yap/Taz inhibit goblet cell fate to maintain lung epithelial homeostasis

Project description:Yap/Taz inhibit goblet cell fate to maintain lung epithelial homeostasis

| PRJNA664777 | ENA

Yap/Taz inhibit goblet cell fate to maintain lung epithelial homeostasis

Project description:Yap/Taz inhibit goblet cell fate to maintain lung epithelial homeostasis

| PRJNA658249 | ENA

Yap/Taz inhibit goblet cell fate to maintain lung epithelial homeostasis (RNA-seq)

Project description:Yap/Taz inhibit goblet cell fate to maintain lung epithelial homeostasis (RNA-seq)

| PRJNA664780 | ENA

Yap/Taz inhibit goblet cell fate to maintain lung epithelial homeostasis (ChIP-seq)

Project description:Yap/Taz inhibit goblet cell fate to maintain lung epithelial homeostasis (ChIP-seq)

| PRJNA664782 | ENA

Yap and Taz regulate retinal pigment epithelial cell fate.

Project description:The optic vesicle comprises a pool of bi-potential progenitor cells from which the retinal pigment epithelium (RPE) and neural retina fates segregate during ocular morphogenesis. Several transcription factors and signaling pathways have been shown to be important for RPE maintenance and differentiation, but an understanding of the initial fate specification and determination of this ocular cell type is lacking. We show that Yap/Taz-Tead activity is necessary and sufficient for optic vesicle progenitors to adopt RPE identity in zebrafish. A Tead-responsive transgene is expressed within the domain of the optic cup from which RPE arises, and Yap immunoreactivity localizes to the nuclei of prospective RPE cells. yap (yap1) mutants lack a subset of RPE cells and/or exhibit coloboma. Loss of RPE in yap mutants is exacerbated in combination with taz (wwtr1) mutant alleles such that, when Yap and Taz are both absent, optic vesicle progenitor cells completely lose their ability to form RPE. The mechanism of Yap-dependent RPE cell type determination is reliant on both nuclear localization of Yap and interaction with a Tead co-factor. In contrast to loss of Yap and Taz, overexpression of either protein within optic vesicle progenitors leads to ectopic pigmentation in a dosage-dependent manner. Overall, this study identifies Yap and Taz as key early regulators of RPE genesis and provides a mechanistic framework for understanding the congenital ocular defects of Sveinsson's chorioretinal atrophy and congenital retinal coloboma.

| S-EPMC4582179 | biostudies-literature

Yap and Taz regulate retinal pigment epithelial cell fate

Project description:The optic vesicle comprises a pool of bi-potential progenitor cells from which the retinal pigment epithelium (RPE) and neural retina fates segregate during ocular morphogenesis. Several transcription factors and signaling pathways have been shown to be important for RPE maintenance and differentiation, but an understanding of the initial fate specification and determination of this ocular cell type is lacking. We show that Yap/Taz-Tead activity is necessary and sufficient for optic vesicle progenitors to adopt RPE identity in zebrafish. A Teadresponsive transgene is expressed within the domain of the optic cup from which RPE arises, and Yap immunoreactivity localizes to the nuclei of prospective RPE cells. yap (yap1) mutants lack a subset of RPE cells and/or exhibit coloboma. Loss of RPE in yap mutants is exacerbated in combination with taz (wwtr1) mutant alleles such that, when Yap and Taz are both absent, optic vesicle progenitor cells completely lose their ability to form RPE. The mechanism of Yap dependent RPE cell type determination is reliant on both nuclear localization of Yap and interaction with a Tead co-factor. In contrast to loss of Yap and Taz, overexpression of either protein within optic vesicle progenitors leads to ectopic pigmentation in a dosagedependent manner. Overall, this study identifies Yap and Taz as key early regulators of RPE genesis and provides a mechanistic framework for understanding the congenital ocular defects of Sveinsson’s chorioretinal atrophy and congenital retinal coloboma. 60 pooled eyes from 36 hpf wild type or vsx2:Gal4/dsRed:14xUAS:YapS87A embryos were pooled for one sample. Three wild type and three vsx2:Gal4/dsRed:14xUAS:YapS87A pools were analyzed for RNA.

2015-08-06 | E-GEOD-71681 | biostudies-arrayexpress

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