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Analysis of human TAp63 regulated genes in CD4+ T cells

ABSTRACT: By comparing the comprehensive gene expression profiles between human Th17 cells overexpressing TAp63 and those with TAp63 knockdown, FOXP3 was identified as one of the downregulated genes by TAp63

ORGANISM(S): Homo sapiens

PROVIDER: GSE181427 | GEO | 2023/04/10

REPOSITORIES: GEO

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TAp63-regulated microRNAs suppress cutaneous squamous cell carcinoma

Project description:TAp63 is a transcription factor belonging to the p53 family with important tumor suppressive functions. We show that TAp63-/- mice exhibit an increased susceptibility to UVR-induced cutaneous squamous cell carcinoma (cuSCC). These tumors showed global disruption of miRNA and mRNA expression when compared to tumors arising in wild-type mice. A comparison to similarly sequenced human cuSCC tumors identified miR-30c-2* and miR-497 as being significantly underexpressed in cuSCC. Reintroduction of these miRNAs significantly inhibited the growth of cuSCC cell lines and xenografts. Proteomic profiling of cells transfected with either miRNA showed significant downregulation of proteins related to cell cycle progression and mitosis. A cross-platform comparison of the RNAseq and proteomics signatures identified 7 downregulated proteins, which are also frequently overexpressed in both mouse and human cuSCC. Knockdown of AURKA, KIF18B, PKMYT1, and ORC1 in cuSCC cell lines suppressed tumor cell proliferation and induced cell death. Additionally, we found that an investigational, oral, selective inhibitor of AURKA suppressed cuSCC cell growth and induced cell death, and showed anti-tumor effects in vivo. Our data establishes TAp63 as an essential regulator of miRNA expression during skin carcinogenesis and reveals a novel network of miRNAs and mRNAs, which include potential targets for therapeutic intervention.

2020-07-07 | PXD014261 | Pride

TAp63-regulated microRNAs suppress cutaneous squamous cell carcinoma [RNA-seq]

Project description:The goal of this study is to compare the differences in the global mRNA expression of WT and TAp63-/- skin and SCC TAp63 is a p53 family member and potent tumor and metastasis suppressor. Here, we show that TAp63-/- mice exhibit an increased susceptibility to UVR- induced cutaneous squamous cell carcinoma (cuSCC). A human-to-mouse comparison of cuSCC tumors identified miR-30c-2* and miR-497 as underexpressed in TAp63-deficient cuSCC. Reintroduction of these microRNAs significantly inhibited the growth of cuSCC cell lines and tumors. Proteomic profiling of cells expressing either microRNA showed downregulation of cell cycle progression and mitosis associated proteins. A mouse to human and cross- platform comparison of RNA-Seq and proteomics data identified a 7-gene signature, including AURKA, KIF18B, PKMYT1, and ORC1, which were overexpressed in cuSCC. Knockdown of these factors in cuSCC cell lines suppressed tumor cell proliferation and induced apoptosis. Additionally, selective inhibition of AURKA suppressed cuSCC cell proliferation, induced apoptosis, and showed anti-tumor effects in vivo. Finally, treatment with miR-30c-2* or miR-497 microRNA mimics was highly effective in suppressing cuSCC growth in vivo. Our data establishes TAp63 as an essential regulator of novel microRNAs that can be therapeutically targeted for potent suppression of cuSCC.

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TAp63-regulated microRNAs suppress cutaneous squamous cell carcinoma [miRNA-seq]

Project description:The goal of this study is to compare the differences in the global miRNA expression of WT and TAp63-/- skin and SCC

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Analysis of human TAp63 regulated genes in CD4+ T cells

Project description:Analysis of human TAp63 regulated genes in CD4+ T cells

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FANCD2 Activates Transcription of TAp63 and Suppresses Tumorigenesis

Project description:Fanconi Anemia (FA) is a rare genetic disorder characterized by an increased susceptibility to squamous cell cancers. Fifteen FA genes are known, and the encoded proteins cooperate in a common DNA repair pathway. A critical step is the monoubiquitination of the FANCD2 protein, and cells from most FA patients are deficient in this step. How monoubiquitinated FANCD2 suppresses squamous cell cancers is unknown. Here we show that Fancd2-deficient mice are prone to Ras oncogene-driven skin carcinogenesis, while Usp1-deficient mice, expressing elevated cellular levels of Fancd2-Ub, are resistant to skin tumors. Moreover, Fancd2-Ub activates the transcription of the tumor suppressor TAp63, thereby promoting cellular senescence and blocking skin tumorigenesis. For FA patients, the reduction of FANCD2-Ub and TAp63 protein levels may account for their susceptibility to squamous cell neoplasia. Taken together, Usp1 inhibition may be a useful strategy for upregulating TAp63 and preventing or treating squamous cell cancers in the general non-FA population. Examination of FANCD2 binding after UV treatment in 293T cells

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TAp63-regulated microRNAs suppress cutaneous squamous cell carcinoma

Project description:TAp63-regulated microRNAs suppress cutaneous squamous cell carcinoma

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TAp63 in pancreas cancer predicts the squamous subtype and promotes a suppressive immune micromilleu

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RNA-seq analysis comparing WT, TAp63-null, and DNp63-null primary murine keratinocytes

Project description:We performed an RNA-seq analysis characterizing expression profiles in primary keratinocytes obtained from E18.5 mice of 3 different genotypes (WT, TAp63-/-, and ΔNp63-/-). We aimed to identify the specific transcriptional target genes regulated by TAp63 and ΔNp63 in physiological conditions.

2018-03-20 | GSE79447 | GEO

Late cornified envelope 1C (LCE1C) gene is a transcriptional target of TAp63.

Project description:As a member of the p53/p63/p73 family, p63 is a transcriptional regulator that induces apoptosis, cell cycle arrest, or senescence. TAp63 protein, a p53-like master transcriptional regulator, plays an essential role in epithelial development because p63-null mice are born alive but die shortly after birth due to developmental defects. However, its molecular mechanism remains elusive. We identified these phosphorylation sites during a search for the targets of Cyclin G-associated kinase (GAK) in vitro. LCE1C was drastically upregulated by doxycycline-dependent expression of Myc-TAp63 wild-type (WT) proteins, but not non-phosphorylatable Myc-TAp63-T46A/T281A (AA) proteins.

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FANCD2 Activates Transcription of TAp63 and Suppresses Tumorigenesis

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