Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Breast cancer plasticity is restrictedby a LATS1-NCOR1 repressive axis [ATAC-seq]

ABSTRACT: The tumor suppressor LATS1, whose expression is often downregulated in human breast cancer, helps maintain luminal breast cancer cell identity by keeping basal-specific genes in a closed chromatin state, preventing their spurious activation. This is achieved via interaction of LATS1 with the NCOR1 nuclear corepressor and recruitment of HDAC1,driving histone H3K27 deacetylation near NCOR1-repressed “basal” genes. Consequently, decreased expression of LATS1 elevates the expression of such “basal” genes and promotes luminal-to-basal slippage.

ORGANISM(S): Mus musculus

PROVIDER: GSE195714 | GEO | 2022/10/19

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
		Other

Items per page:

1 - 1 of 1

Similar Datasets

Breast cancer plasticity is restrictedby a LATS1-NCOR1 repressive axis [MARS-seq]

Project description:The tumor suppressor LATS1, whose expression is often downregulated in human breast cancer, helps maintain luminal breast cancer cell identity by keeping basal-specific genes in a closed chromatin state, preventing their spurious activation. This is achieved via interaction of LATS1 with the NCOR1 nuclear corepressor and recruitment of HDAC1,driving histone H3K27 deacetylation near NCOR1-repressed “basal” genes. Consequently, decreased expression of LATS1 elevates the expression of such “basal” genes and promotes luminal-to-basal slippage.

2022-10-19 | GSE195715 | GEO

Inactivation of LATS1/2 drives luminal-basal plasticity to initiate basal-like mammary carcinomas

Project description:Basal breast cancers, an aggressive breast cancer subtype that has poor treatment options, are thought to arise from luminal mammary epithelial cells that undergo basal-like plasticity through poorly understood mechanisms. Using genetic mouse models and ex vivo primary organoid cultures, we show that conditional co-deletion of the LATS1 and LATS2 kinases, key effectors of Hippo pathway signaling, in mature mammary luminal epithelial cells promotes the development of basal-like carcinomas that metastasize over time. Genetic co-deletion experiments revealed that phenotypes resulting from the loss of LATS1/2 activity are dependent on the transcriptional regulators YAP/TAZ. Notably, transcriptional analyses of LATS1/2-deleted mammary epithelial cells revealed a gene expression program that associates with human basal breast cancers. Our study demonstrates in vivo roles for the LATS1/2 kinases in mammary epithelial homeostasis and luminal-basal fate control and implicates signaling networks induced upon the loss of LATS1/2 activity in the development of basal breast cancers.

2022-09-26 | GSE196555 | GEO

Breast cancer plasticity is restrictedby a LATS1-NCOR1 repressive axis

Project description:Breast cancer plasticity is restrictedby a LATS1-NCOR1 repressive axis

| PRJNA801930 | ENA

LATS1 and LATS2 suppress breast cancer progression by maintaining cell identity and metabolic state [mouse]

Project description:Deregulated activity of the LATS tumor suppressors has broad implications on cellular and tissue homeostasis. We examined the consequences of downregulation of either LATS1 or LATS2 in breast cancer. Consistent with their proposed tumor suppressive roles, expression of both paralogs is significantly downregulated in human breast cancer, and loss of either paralog accelerated mammary tumorigenesis in mice. However, each paralog had a distinct impact on breast cancer. Thus, LATS2 depletion in luminal B tumors resulted in metabolic rewiring, with increased glycolysis and reduced PPARg signaling. Furthermore, pharmacological activation of PPARg elicited LATS2-dependent death in luminal B-derived cells. In contrast, LATS1 depletion augmented cancer cell plasticity, skewing luminal B tumors towards increased expression of basal-like features, in association with increased resistance to hormone therapy. Hence, these two closely related paralogs play distinct roles in protection against breast cancer; tumors with reduced expression of either LATS1 or LATS2 may rewire signaling networks differently and thus respond differently to anti-cancer treatments.

2018-10-28 | GSE116817 | GEO

LATS1 and LATS2 suppress breast cancer progression by maintaining cell identity and metabolic state [human]

2018-10-28 | GSE116816 | GEO

Breast cancer plasticity is restrictedby a LATS1-NCOR1 repressive axis [MARS-seq]

Project description:Breast cancer plasticity is restrictedby a LATS1-NCOR1 repressive axis [MARS-seq]

| PRJNA801932 | ENA

Breast cancer plasticity is restrictedby a LATS1-NCOR1 repressive axis [ATAC-seq]

Project description:Breast cancer plasticity is restrictedby a LATS1-NCOR1 repressive axis [ATAC-seq]

| PRJNA801933 | ENA

Microarray of primary human breast cells with or without Hippo kinases LATS1/2

Project description:Perturbation of the tightly regulated dynamic process of cell fate underlies many human diseases. The molecular mechanisms regulating breast cell fate in the hierarchically organized luminal and basal lineages of breast epithelium remain largely elusive. We performed a high-content confocal image-based shRNA screen for regulators of primary human breast cell fate. Inhibition of the Hippo kinases LATS was found to promote luminal fate and increase the number of progenitors, which is a paradox given that Hippo effectors YAP/TAZ have been associated with basal fate. Mechanistically, LATS loss increases the activities of YAP/TAZ and ERα, which in concert control breast cell fate via intrinsic and paracrine effects. Reduced LATS expression is found in breast cancers with a poor prognosis; this diminishes the sensitivity of ERα-positive- and increases the sensitivity of ERα-negative cancers to endocrine therapy. Thus, in this study we have unraveled crosstalk between Hippo and estrogen signaling and shown that LATS loss triggers expansion of luminal progenitors, the highly suspected cell-of-origin in most breast cancers. In this dataset, we provide microarray gene expression analysis of normal breast epithelial cells, freshly dissociated from reduction mammoplasties, in which LATS1/2 were knocked down comparing it to non-targeting control expressing breast cells.

2017-01-27 | GSE61297 | GEO

Microarray of MCF10A cells with/without LATS1/2, expressing YAP/TAZ or ESR1 cDNA

Project description:Cell fate perturbations underlie many human diseases, including breast cancer. However, the regulation of breast cell fate remains largely elusive. The mammary gland epithelium consists of differentiated luminal epithelial and basal myoepithelial cells, as well as undifferentiated stem cells and more restricted progenitors. Breast cancer originates from this epithelium but the molecular mechanisms underlying breast epithelial hierarchy remain ill-defined. Mouse and human luminal cells express keratins (K)18, 8, 19 and/or estrogen receptor α (ERα) and progesterone receptor (PR), their basal counterparts express K5, 14 and/or p63 and/or α-smooth-muscle actin (α-SMA)4-6. In this study, using a high-content confocal image-based shRNA screen for tumor suppressors regulating human breast cell fate, we discovered that ablation of the Hippo kinases large tumor suppressor (LATS) 1 and 2, promoted luminal fate and increased the number of bipotent and luminal progenitors, the proposed cell-of-origin of most human breast cancers. Mechanistically, we discovered a crosstalk between Hippo and ERα signaling. In the presence of LATS, ERα was targeted for ubiquitination and proteasomal degradation. Loss of LATS stabilized ERα and Hippo effectors YAP/TAZ, which in concert control breast cell fate via intrinsic and paracrine mechanisms. Our findings uncover a novel non-canonical (i.e., YAP/TAZ-independent) effect of LATS in the regulation of human breast cell fate. In this dataset, we provide microarray gene expression analysis of normal breast epithelial cells, freshly dissociated from reduction mammoplasties, in which LATS1/2 were knocked down comparing it to non-targeting control expressing breast cells.

2017-01-27 | GSE80055 | GEO

Inactivation of LATS1/2 drives luminal-basal plasticity to initiate basal-like mammary carcinomas

Project description:Inactivation of LATS1/2 drives luminal-basal plasticity to initiate basal-like mammary carcinomas

| PRJNA805501 | ENA