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Expression analysis of SPDEF KO and hRosa26 clones of hF27, CFPAC1 and HPAF-II orthotopically grafted into the pancreata of NSG mice.

ABSTRACT: This study used Illumina RNA-sequencing to examine gene expression differences following Spdef deletion in hF27, CFPAC1 and HPAF-II orthotopically grafted tumor models.

ORGANISM(S): Mus musculus

PROVIDER: GSE211348 | GEO | 2024/01/25

REPOSITORIES: GEO

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Expression data from Spdef +/+ and Spdef -/- mice

Project description:Goblet cell numbers decrease within the conjunctival epithelium in drying and cicatrizing ocular surface diseases. Factors regulating goblet cell differentiation in conjunctival epithelium are unknown. Recent data indicate that the transcription factor SAM-pointed domain epithelial-specific transcription factor (Spdef) is essential for goblet cell differentiation in tracheobronchial and gastrointestinal epithelium of mice. Using Spdef -/- mice, we determined that Spdef is required for conjunctival goblet cell differentiation and that Spdef -/- mice, which lack conjunctival goblet cells, have significantly increased corneal surface fluorescein staining and tear volume, a phenotype consistent with dry eye. Microarray analysis of conjunctival epithelium in Spdef -/- mice identified 43 signficantly upregulated genes and 110 signficantly downregulated genes in the conjunctival epithelium of Spdef -/- mice compared to that of Spdef +/+ control mice (3 fold change, p<0.01). Downregulated genes of particular interested included goblet cell-specific genes (Muc5ac, Tff1, Gcnt3). Upregulated genes included epithelial cell differentiation/keratinization genes (Sprr2h, Tgm1) and pro-inflammatory genes (Il1-Î±, Il-1Î², Tnf-Î±), all of which are upregulated in dry eye. Interestingly, four Wnt pathway genes were downregulated. Conjunctival epithelium of Spdef +/+ and Spdef -/- mice was collected by laser capture microdissection for RNA extraction and hybridization on Affymetrix microarrays to determine if gene expression patterns in the conjunctival epithelium of Spdef -/- mice is altered compared to that of Spdef +/+ mice.

2013-02-08 | E-GEOD-44101 | biostudies-arrayexpress

Expression data from Spdef +/+ and Spdef -/- mice

Project description:Goblet cell numbers decrease within the conjunctival epithelium in drying and cicatrizing ocular surface diseases. Factors regulating goblet cell differentiation in conjunctival epithelium are unknown. Recent data indicate that the transcription factor SAM-pointed domain epithelial-specific transcription factor (Spdef) is essential for goblet cell differentiation in tracheobronchial and gastrointestinal epithelium of mice. Using Spdef -/- mice, we determined that Spdef is required for conjunctival goblet cell differentiation and that Spdef -/- mice, which lack conjunctival goblet cells, have significantly increased corneal surface fluorescein staining and tear volume, a phenotype consistent with dry eye. Microarray analysis of conjunctival epithelium in Spdef -/- mice identified 43 signficantly upregulated genes and 110 signficantly downregulated genes in the conjunctival epithelium of Spdef -/- mice compared to that of Spdef +/+ control mice (3 fold change, p<0.01). Downregulated genes of particular interested included goblet cell-specific genes (Muc5ac, Tff1, Gcnt3). Upregulated genes included epithelial cell differentiation/keratinization genes (Sprr2h, Tgm1) and pro-inflammatory genes (Il1-α, Il-1β, Tnf-α), all of which are upregulated in dry eye. Interestingly, four Wnt pathway genes were downregulated.

2013-02-08 | GSE44101 | GEO

A mucus production programme promotes classical pancreatic ductal adenocarcinoma

Project description:CUT&RUN for IgG, H3K4me3 and HA-SPDEF in human PDA HPAF-II cells and CUT&RUN HA-Spdef in murine KPC 2D FC1245 cells We performed CUT&RUN assay in human and murine PDA cells to profile the direct binding of SPDEF to target genes.

2024-01-24 | GSE250519 | GEO

Genes regulated by SPDEF or FOXA3 in A549 lung carcinoma cells [RNA-seq]

Project description:To identify genes regulated by SPDEF or FOXA3 in A549 lung carcinoma cells, we analyzed the whole-transcriptomic mRNA profiles of A549 cells expressing SPDEF or FOXA3 based on RNA-seq.

2017-03-02 | GSE86956 | GEO

Expression profiling of Stomach and Colon of Spdef Knockout mice

Project description:Gene expression profiling on stomach and colon tissue from Spdef knockout, heterozygous and wild type mice.

2010-12-07 | GSE20299 | GEO

Genome-wide mapping of NKX2-1 and SPDEF binding sites in A549 lung carcinoma cells by ChIP-seq

Project description:ChIP-seq was performed to identify the binding regions of SPDEF and NKX2-1 in A549 lung carcinoma cells expressing NKX2-1 and SPDEF.

2017-03-02 | GSE86957 | GEO

Transcriptional response to PORCN inhibition using an HPAF-II orthotopic model upon MYC perturbation

Project description:SRP137043 - PRJNA448654 - Timecourse RNA-seq response to PORCN inhibition using an HPAF-II orthotopic model with different MYC states

2018-12-04 | GSE118231 | GEO

The Ets domain transcription factor Spdef drives maturation of Goblet and Paneth cells in the intestinal epithelium

Project description:BACKGROUND & AIMS: Stems cells within the intestinal epithelium generate daughter cells which undergo lineage commitment and maturation through the concerted action of the Wnt and Notch signalling cascades. Both pathways, in turn, regulate transcription factor networks which further define differentiation towards either enterocytes or one of three secretory cell lineages (Paneth, goblet or enteroendocrine cells). In this manuscript, we identified the Ets domain transcription factor, Spdef, as a novel lineage maker of goblet and Paneth cells. METHODS: To address the function of Spdef in vivo, we inactivated the Spdef gene and analysed the intestinal phenotype using a range of histological techniques and DNA microarray profiling. RESULTS: In accordance with the expression data we found that loss of Spdef severely impaired the maturation of goblet and Paneth cells and conversely lead to an accumulation of immature secretory progenitors. Moreover, we provide evidence suggesting that Spdef positively and negatively regulates a specific subset of goblet and Paneth cell genes including Cryptdins, Mmp7, Ang4, Kallikreins, and Muc2. CONCLUSION: We propose a model whereby Spdef acts downstream of Math1 to promote terminal differentiation of a secretory progenitor pool towards Paneth and goblet cells. Keywords: expression profiling

2010-02-10 | GSE14892 | GEO

Identification and characterization of novel and conserved microRNAs in self-grafted and grafted watermelon by high-throughput sequencing

Project description:In this study, Solexa sequencing technology has been used to discover small RNA populations of self-grafted watermelon and grafted watermelon (bottle gourd and squash were used as rootstocks). A total of 11,458,476, 11,614,094 and 9,339,089 raw reads representing 2,957,751, 2,880,328 and 2,964,990 unique sequences were obtained from the scions of self-grafted watermelon and watermelon grafted on-to bottle gourd and squash at two true-leaf stage, respectively. 39 known miRNAs belonging to 30 miRNA families and 80 novel miRNAs were identified in our small RNA dataset. Compared with self-grafted watermelon, 20 (5 known and 15 novel miRNAs) and 51 (21 known miRNAs and 30 novel miRNAs) miRNAs were expressed significantly different with higher abundance or lower abundance in watermelon grafted on to bottle gourd and squash, respectively. The differentially expressed miRNA target various transcriptional factors and other genes which involved in a wide range of biological processes. This study was firstly conducted to identify and compare miRNAs on genome-wide scale in watermelon grafting system. The miRNAs expressed differentially when watermelon was grafted onto different rootstocks suggesting that miRNAs might play an important role in diverse biological and metabolic processes in watermelon and grafting may possibly by changing miRNAs expression to regulate plant growth and response to stresses. The small RNA transcriptomes obtained in this study provided insights into molecular basis of miRNA regulation of genes expressed in self-grafted and grafted watermelon.

2011-10-26 | GSE33209 | GEO

Transcriptional response to PORCN inhibition using an orthotopic model of RNF43 mutant pancreatic adenocarcinoma (HPAF-II)

Project description:Timecourse RNA-seq of response to PORCN inhibition, using ETC-159, in an orthotopic model of RNF43 mutant pancreatic adenocarcinoma (HPAF-II).

2018-12-04 | GSE118041 | GEO

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