YAP and TAZ modulate cell phenotype in a subset of small cell lung cancer.
Ontology highlight
ABSTRACT:
ORGANISM(S): Homo sapiens
PROVIDER: GSE93400 | GEO | 2017/01/12
SECONDARY ACCESSION(S): PRJNA360907
REPOSITORIES: GEO
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Project description:Small cell lung cancer (SCLC) is a highly aggressive and metastatic malignancy that shows rapid development of chemoresistance and a high rate of recurrence. Recent genome and transcriptome studies have provided the whole landscape of genomic alterations and gene expression changes in SCLC. In light of the inter-individual heterogeneity of SCLC, subtyping of SCLC might be helpful for prediction of therapeutic response and prognosis. Based on the transcriptome data of SCLC cell lines, we undertook transcriptional network-defined SCLC classification and identified a unique SCLC subgroup characterized by relatively high expression of Hippo pathway regulators Yes-associated protein (YAP) and transcriptional coactivator with PDZ-binding motif (TAZ) (YAP/TAZ subgroup). The YAP/TAZ subgroup displayed adherent cell morphology, lower expression of achaete-scute complex homolog 1 (ASCL1) and neuroendocrine markers, and higher expression of laminin and integrin. YAP knockdown caused cell morphological alteration reminiscent of floating growth pattern in many SCLC cell lines, and microarray analyses revealed a subset of genes regulated by YAP, including Ajuba LIM protein (AJUBA). AJUBA also contributed to cell morphology regulation. Of clinical importance, SCLC cell lines of the YAP/TAZ subgroup showed unique patterns of drug sensitivity. Our findings shed light on a subtype of SCLC with YAP and TAZ expression, and delineate molecular networks underlying the heterogeneity of SCLC.
| S-EPMC5198951 | biostudies-literature
Project description:Small cell lung cancer is the most aggressive type of lung cancer and has a high degree of plasticity, characterized by a remarkable response to chemotherapy followed by development of resistance. We show that intratumoral heterogeneity of SCLC is progressively established, indicated by the appearance of YAP+ and HES1+ SCLC tumor cells. Notch signaling is required for the generation of Non-NE SCLC cells, but not for the tumorigenesis of SCLC. Furthermore, YAP signals through Notch-dependent and independent pathway to induce REST expression to promote the conversion of NE to Non-NE SCLC tumor cells. In addition, YAP activation enhances the chemoresistance in NE SCLC tumor cells by downregulating GSDME, while inactivation of YAP in Non-NE SCLC tumor cells switches cell death from apoptosis to pyroptosis. Our study will not only provide novel insights into the molecular basis of SCLC tumorigenesis, but also the potential drug targets for SCLC therapy
2021-06-01 | GSE161741 | GEO
Project description:Small cell lung cancer is the most aggressive type of lung cancer and has a high degree of plasticity, characterized by a remarkable response to chemotherapy followed by development of resistance. We show that intratumoral heterogeneity of SCLC is progressively established, indicated by the appearance of YAP+ and HES1+ SCLC tumor cells. Notch signaling is required for the generation of Non-NE SCLC cells, but not for the tumorigenesis of SCLC. Furthermore, YAP signals through Notch-dependent and independent pathway to induce REST expression to promote the conversion of NE to Non-NE SCLC tumor cells. In addition, YAP activation enhances the chemoresistance in NE SCLC tumor cells by downregulating GSDME, while inactivation of YAP in Non-NE SCLC tumor cells switches cell death from apoptosis to pyroptosis. Our study will not only provide novel insights into the molecular basis of SCLC tumorigenesis, but also the potential drug targets for SCLC therapy
2021-06-01 | GSE161740 | GEO
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
Project description:Transcriptome analysis of prostate cancer patient derived organoid DU145 cell line upon knockdown of YAP, TAZ, or YAP/TAZ mediated by siRNAs
2022-03-24 | GSE199347 | GEO
Project description:Oral squamous cell carcinoma (OSCC) is a prevalent form of cancer that develops from the epithelium of the oral cavity. OSCC is on the rise worldwide, and death rates associated with the disease are particularly high. Despite progress in understanding of the mutational and expression landscape associated with OSCC, advances in deciphering these alterations for the development of therapeutic strategies have been limited. Further insight into the molecular cues that contribute to OSCC is therefore required. Here we show that the transcriptional regulators YAP (YAP1) and TAZ (WWTR1), which are key effectors of the Hippo pathway, drive pro-tumorigenic signals in OSCC. Regions of pre-malignant oral tissues exhibit aberrant nuclear YAP accumulation, suggesting that dysregulated YAP activity contributes to the onset of OSCC. Supporting this premise, we determined that nuclear YAP and TAZ activity drives OSCC cell proliferation, survival, and migration in vitro, and is required for OSCC tumor growth and metastasis in vivo. Global gene expression profiles associated with YAP and TAZ knockdown revealed changes in the control of gene expression implicated in pro-tumorigenic signaling, including those required for cell cycle progression and survival. Notably, the transcriptional signature regulated by YAP and TAZ significantly correlates with gene expression changes occurring in human OSCCs identified by The Cancer Genome Atlas (TCGA), emphasizing a central role for YAP and TAZ in OSCC biology. Expression profiling was conducted following the repression of the transcriptional regulators TAZ and YAP (YAP/TAZ) in human SCC2 oral cancer cells. Human SCC2 oral cancer cells were transfected with control siRNA, or siRNAs targeting TAZ, YAP, or YAP/TAZ for 48 hours. Total RNA from three independent experiments carried out on separate days was isolated and purified and the samples were then profiled on Affymetrix Human Gene 2.0 Chips at the Boston University Microarray Core. The expression profiles were processed and normalized using the Robust Multi-array Average (RMA) procedure (23) based on a custom Brainarray CDF (24). For each of the siRNA experiments, signatures of genes differentially expressed between treatment and corresponding siRNA control with an FDR q-value ?0.05 and a fold change ?2 were identified as either activated (up-regulated in control) or repressed (up-regulated in treatment). The overlap between the differentially expressed gene signatures was evaluated by Fisher test. Hierarchical gene and sample clustering was performed on the top 3000 genes with highest median absolute deviation (MAD; a robust version of the variance) across 12 samples, using “ward” as the agglomeration rule, and 1 minus Pearson correlation and Euclidean as the distance measures for genes and samples, respectively.
2015-05-26 | E-GEOD-66949 | biostudies-arrayexpress
Project description:The WWTR1(TAZ)-CAMTA1 and YAP1-TFE3 gene fusions are disease defining gene alterations for epithelioid hemangioendothelioma, a vascular cancer. The resultant fusion proteins fuse the C terminus of CAMTA1 and TFE3 in frame to the N terminus of TAZ and YAP, respectively. An unbiased BioID-mass spectrometry/RNAi screen identified YEATS2 and ZZZ3 as components of the Ada2a-containing histone acetyltransferase complex and key interactors of both TAZ-CAMTA1 and YAP-TFE3. An integrative NGS approach including RNA-Seq, ChIP-Seq, and ATAC-Seq showed TAZ-CAMTA1 and YAP-TFE3 transcriptional programs overlap with TAZ and YAP but also drive expression of a novel transcriptome.
2020-12-01 | GSE152736 | GEO
Project description:The WWTR1(TAZ)-CAMTA1 and YAP1-TFE3 gene fusions are disease defining gene alterations for epithelioid hemangioendothelioma, a vascular cancer. The resultant fusion proteins fuse the C terminus of CAMTA1 and TFE3 in frame to the N terminus of TAZ and YAP, respectively. An unbiased BioID-mass spectrometry/RNAi screen identified YEATS2 and ZZZ3 as components of the Ada2a-containing histone acetyltransferase complex and key interactors of both TAZ-CAMTA1 and YAP-TFE3. An integrative NGS approach including RNA-Seq, ChIP-Seq, and ATAC-Seq showed TAZ-CAMTA1 and YAP-TFE3 transcriptional programs overlap with TAZ and YAP but also drive expression of a novel transcriptome. The altered transcriptional program of the fusion proteins owing to altered DNA binding as well as shifts in the chromatin landscape.
2020-12-01 | GSE152737 | GEO
Project description:The WWTR1(TAZ)-CAMTA1 and YAP1-TFE3 gene fusions are disease defining gene alterations for epithelioid hemangioendothelioma, a vascular cancer. The resultant fusion proteins fuse the C terminus of CAMTA1 and TFE3 in frame to the N terminus of TAZ and YAP, respectively. An unbiased BioID-mass spectrometry/RNAi screen identified YEATS2 and ZZZ3 as components of the Ada2a-containing histone acetyltransferase complex and key interactors of both TAZ-CAMTA1 and YAP-TFE3. An integrative NGS approach including RNA-Seq, ChIP-Seq, and ATAC-Seq showed TAZ-CAMTA1 and YAP-TFE3 transcriptional programs overlap with TAZ and YAP but also drive expression of a novel transcriptome. The altered transcriptional program of the fusion proteins owing to altered DNA binding as well as shifts in the chromatin landscape.
2020-12-01 | GSE152733 | GEO
Project description:The WWTR1(TAZ)-CAMTA1 and YAP1-TFE3 gene fusions are disease defining gene alterations for epithelioid hemangioendothelioma, a vascular cancer. The resultant fusion proteins fuse the C terminus of CAMTA1 and TFE3 in frame to the N terminus of TAZ and YAP, respectively. An unbiased BioID-mass spectrometry/RNAi screen identified YEATS2 and ZZZ3 as components of the Ada2a-containing histone acetyltransferase complex and key interactors of both TAZ-CAMTA1 and YAP-TFE3. An integrative NGS approach including RNA-Seq, ChIP-Seq, and ATAC-Seq showed TAZ-CAMTA1 and YAP-TFE3 transcriptional programs overlap with TAZ and YAP but also drive expression of a novel transcriptome. The altered transcriptional program of the fusion proteins owing to altered DNA binding as well as shifts in the chromatin landscape.
2020-12-01 | GSE152778 | GEO