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Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

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Genome-wide analysis of livers of control and Lats1/2 deficient neonatal mice [Microarray expression]

ABSTRACT: Lats1-/-;Lats2fl/fl;Alb-Cre pups and control pups were sacrificed at 1 day after birth Total mRNA obtained from livers in control and Lats1/2 deficient neonatal mice

ORGANISM(S): Mus musculus

SUBMITTER: Da-Hye Lee

PROVIDER: E-GEOD-71872 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Genome-wide analysis of livers of control and Lats1/2 deficient neonatal mice [Microarray expression]

Project description:Lats1-/-;Lats2fl/fl;Alb-Cre pups and control pups were sacrificed at 1 day after birth

2016-06-29 | GSE71872 | GEO

Genome-wide analysis of gene expression in control and Lats1/2 deficient neonatal mice

Project description:This SuperSeries is composed of the SubSeries listed below. Refer to individual Series

2016-06-29 | E-GEOD-71874 | biostudies-arrayexpress

Genome-wide analysis of gene expression using in vitro cultured control and Lats1/2 deficient hepatoblasts [RNA-Seq]

Project description:RNA-sequencing results with in vitro cultured control and Lats1/2 deficient hepatoblasts, in vitro differentiated control and Lats1/2 deficient hepatocytes and biliary epithelial cells To investigate changes in gene expression by loss of Lats1 and Lats2 during hepatocyte or biliary epithelial cell differentiation, we performed multiplex RNA-sequecing with in vitro cultured hepatoblasts, in vitro differentiated hepatocytes and biliary epithelial cells

2016-06-29 | E-GEOD-71873 | biostudies-arrayexpress

The Hippo pathway kinase LATS1 scaffolds Beclin1 in autophagy regulation in hepatocellular carcinoma

Project description:Autophagy perturbation represents an emerging therapeutic strategy in cancer. The mammalian Hippo pathway is an evolutionary conserved tumor suppressive network, where the kinases LATS1/2 phosphorylate and inactivate oncogenic YAP/TAZ. Here, we demonstrated a pro-survival role of LATS1, but not LATS2, in hepatocellular carcinoma cells in response to sorafenib, a standard care of advanced HCC. Transcriptomic analysis revealed a restrictive role of LATS1 in autophagy regulation in HCC cells. Further, we found that the autophagy regulation by LATS1 was independent of its kinase activity. Instead, LATS1 stabilized autophagy core-machinery component Beclin 1 via promoting a non-canonical form of K27-linked ubiquitination, and consequently, inactive Beclin 1 self-dimer, in a E3 ligase NEDD4 dependent manner. Our study highlights a functional diversity between LATS1 and LATS2 and uncovers a scaffolding role of LATS1 in mediating a cross-talk between Hippo signalling and autophagy in HCC and therapy response.

2019-11-13 | GSE117116 | GEO

LATS1/2 Loss Promote Tumor Immune Evasion in Endometrial Cancer through Downregulating MHC-I Expression

Project description:LATS1/2 is frequently mutated and down-regulated in endometrial cancer (EC), but the contribution of LATS1/2 to endometrial tumor progression remains unclear. Here, we discovered an unexpected role of LATS1/2 in regulating MHC class I expression in EC. We demonstrate that the knockout of LATS1/2 in EC cells resulted in significant down-regulation of multiple genes of MHC/HLA Class I family and leaded to insensitivity to tumor immunotherapy. Furthermore, we found that the regulation of LATS1/2 on MHC/HLA expression does not depend on the classical Hippo pathway but on their direct interaction with STAT1 to phosphorylate STAT1 to promote STAT1 accumulating and moving into the nucleus to enhance the transcriptional activation of IRF1/NLRC5 on MHC-I. The kinase-dead mutant LATS1/2 attenuates STAT1 phosphorylation at Ser727. The expressions of LATS1/2, MHC-I, CD8A and p-STAT1（S727）are positive correlation in tissues of EC confirming our findings furtherly. Furthermore, LATS1/2 expression was negatively correlated with tumor stage in EC tissues. These findings reveal novel molecular mechanisms underlying tumor immunogenicity deficiency and elucidate the potential immunotherapy biomarker targeting LATS1/2 in EC.

2024-02-28 | GSE241847 | GEO

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

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

2022-10-19 | GSE195714 | GEO

Expression profiling in primary embryonic fibroblasts deficient for the N-terminal truncation of Lats1

Project description:Lats1 and Lats2 are the mediators of the Hippo pathway that regulates tissue growth and proliferation. Lats1 and Lats2 kinases share 85% sequence identity in the kinase domain. However, their non-kinase regions at the N-terminus are distinct except for Lats conserved domain 1 (LCD1) and LCD2, suggesting that their N-terminal regions are important for Lats1/2-specific functions. In this study, we generated Lats1 knockout mice disrupting the N-terminal region containing LCD1 (Lats1M-NM-^TN/M-NM-^TN). We show that some Lats1M-NM-^TN/M-NM-^TN mice were born safely and grew normally. However, mouse embryonic fibroblasts (MEFs) from Lats1M-NM-^TN/M-NM-^TN mice displayed drastic defects in mitosis, showing enhanced centrosome overduplication, chromosomal misalignment, multipolar spindle formation, chromosome bridging, and cytokinesis failure. Moreover, they displayed accelerated cell cycle and cell growth bypassing a cell-cell contact inhibition like tumor cells, and exhibited anchorage independent growth. Indeed, Lats1M-NM-^TN/M-NM-^TN MEFs produced tumors in nude mice after subcutaneous injection, although the tumor growth rate was much slower than ordinary cancer cells. Furthermore, Yap, the key transcriptional co-activator in the Hippo pathway, was overexpressed and retained stable in Lats1M-NM-^TN/M-NM-^TN MEFs under high cell density, and expression of Lats2 mRNA were down-regulated. Total RNAs were extracted from MEFs under high or low cell density using miRNeasy extraction kit (Qiagen). A Dye-swapped experiment was performed by hybridizing complimentary RNA (cRNA) labeled with either Cyanine (Cy) -3 or Cy-5 (Perkin-Elmer) onto Whole Mouse Genome Oligo Microarray (G4122F; Agilent Technologies). Co-hybridizations were performed and data from Cy3 or Cy5 channels were analyzed as normalized signal intensities rather than as log ratios corresponding to each array.

2012-12-17 | E-GEOD-37871 | biostudies-arrayexpress

phospho-proteomic data on the LATS1 interactome from cells treated with two proapoptotic signals: FAS and etoposide

Project description:Using this approach, we obtained phospho-proteomic data on the LATS1 interactome from cells treated with two proapoptotic signals: FAS and etoposide, which both activate LATS kinase activity [28].To identify the LATS1 interactome we transiently expressed GFP-LATS1 in HeLa cells, immunoprecipitated GFP-LATS1 with anti-GFP antibodies and identified the associated proteins using mass-spectrometry. Unspecific binding proteins were discarded by comparing with the control GFP IP.

2021-09-09 | PXD018903 | Pride

Lats1/2 control TGF-beta directed EMT in the dorsal cranial neuroepithelium through YAP regulation

Project description:Hippo signaling, an evolutionarily conserved pathway involved in organ size control, has been implicated to play key roles in developmental processes of various tissues, but its role in craniofacial development has not been largely explored. To examine the function of the Hippo signaling kinase cascade, we inactivated Hippo components Lats1 and Lats2 in the cranial neuroepithelium of mouse embryos using a Wnt1CreSOR driver. Double conditional knock out (DCKO) of Lats1/2 resulted in neural tube and craniofacial defects. Lats1/2 DCKO mutant embryos presented a minute head with delayed and defective neural tube closure. Furthermore, neuroepithelial cell polarity and cell integrity were disrupted within the cranial neural tube in Lats1/2 DCKO mutants. Embryonic neural tube RNA-seq revealed increased TGF-beta signaling in absence of Lats1/2. Moreover, markers of epithelial-to-mesenchymal transition (EMT) were upregulated in the cranial neural tube. Notably, modulation of Hippo signaling downstream effectors Yap and Taz prevented neuroepithelial defects, aberrant EMT, and TGF-beta dysregulation caused by Lats1/2 deficiency, indicating that Lats1/2 function via canonical Hippo-Yap pathway. Together, our findings revealed important roles for Hippo signaling kinases in pre-migratory neural crest EMT and migration.

2022-09-05 | GSE182721 | GEO

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