Intestinal Fork Head Regulates Nutrient Absorption and Promotes Longevity
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ABSTRACT:
PROVIDER: PRJEB22609 | ENA |
REPOSITORIES: ENA
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Project description:We identified that Drosophila FoxA transcription Fork Head (FKH) function is necessary for reduced insulin signalling and rapamycin induced longevity. Furthermore, we determined that FKH function in the gut tissue alone is sufficient to extend lifespan. We carried out RNA-sequencing in gut tissue on controls (daGS;InRDN>GFP- RNAi) and reduced insulin signalling background upon control RNAi (daGS;InRDN>GFPRNAi +RU486) and upon FKH RNAi (daGS;InRDN>FKH- RNAi +RU486). InR-DN stock used: K1409A.
2017-09-23 | E-MTAB-6056 | biostudies-arrayexpress
Project description: Not available
| S-EPMC5656751 | biostudies-literature
Project description:When misexpressed in late Drosophila prepupae, the transcription factor Fork head (Fkh) blocks death of the larval salivary glands that normally occurs in the early pupa. The aim of the experiment was to identify genes responding to Fkh that might mediate the effect of the protein on cell death and other biological processes. Fkh was expressed in the line P[hs-Fkh111] from a heat-inducible transgene that encodes wild-type Fkh protein. Expression of Fkh was induced by incubating prepupae for 30 min in a 37 °C water bath, starting at 9.5 hours after puparium formation. Salivary glands were dissected at 14 hours after puparium formation and RNA isolated for microarray analysis with Affymetrix GeneChips. Control samples were obtained from w1118 animals treated the same way. The microarray analysis identified 55 genes annotated as functioning in apoptosis whose expression was at least 1.5-fold changed by Fkh. These genes include the death genes hid and reaper, which play a central role in the control of salivary gland death. Other groups of significantly enriched genes include genes functioning in autophagy, steroid-signaling pathways, salivary gland secretion, and phospholipid metabolism. In addition, the microarray data identify genes as responsive to Fkh that are known to be controlled by the FOXA counterparts of Fkh in vertebrates, indicating that target genes and biological processes controlled by Fkh are evolutionarily conserved. SUBMITTER_CITATION: Liu and Lehmann, 2008: Genes and biological processes controlled by the Drosophila FOXA orthologue Fork head. Insect Molecular Biology, 17, 91-101; link: http://www.blackwell-synergy.com/toc/imb/17/2) Experiment Overall Design: Experimental RNA samples were obtained in 3 biological replicates from fkh-expressing salivary glands (SG_Fkh_14APF_rep1, SG_Fkh_14APF_rep2, SG_Fkh_14APF_rep3) and compared to control samples obtained in two biological replicates from the salivary glands of w1118 control animals (SG_w1118(3)_14APF_rep1, SG_w1118(3)_14APF_rep2). All samples were compared using dChip and normalized to the same baseline array (median intensity 134).
2008-04-05 | E-GEOD-8722 | biostudies-arrayexpress
Project description:Single-cell transcriptome analysis reveals differential nutrient absorption functions in human intestine
| PRJNA518129 | ENA
Project description:Transcription factors drive organogenesis, from the initiation of cell fate decisions to the maintenance and implementation of these decisions. The Drosophila embryonic salivary gland provides an excellent platform for unraveling the underlying transcriptional networks of organ development because Drosophila is relatively unencumbered by significant genetic redundancy. The highly conserved FoxA family transcription factors are essential for various aspects of organogenesis in all animals that have been studied. Here, we explore the role of the single Drosophila FoxA protein Fork head (Fkh) in salivary gland organogenesis using two genome-wide strategies. A large-scale in situ hybridization analysis reveals a major role for Fkh in maintaining the salivary gland fate decision and controlling salivary gland physiological activity, in addition to its previously known roles in morphogenesis and survival. The majority of salivary gland genes (59%) are affected by fkh loss, mainly at later stages of salivary gland development. We show that global expression of Fkh cannot drive ectopic salivary gland formation. Thus, unlike the worm FoxA protein PHA-4, Fkh does not function to specify cell fate. In addition, Fkh only indirectly regulates many salivary gland genes, which is also distinct from the role of PHA-4 in organogenesis. Our microarray analyses reveal unexpected roles for Fkh in blocking terminal differentiation and in endoreduplication in the salivary gland and in other Fkh-expressing embryonic tissues. Overall, this study demonstrates an important role for Fkh in determining how an organ preserves its identity throughout development and provides an alternative paradigm for how FoxA proteins function in organogenesis. Three wild type (reference) samples were obtained from the Oregon R strain, age matched and treated the same as the three experimental samples isolated from Stage 11 fkh[6] mutant embryos.
2011-12-31 | E-GEOD-28324 | biostudies-arrayexpress
Project description:Selenium deficiency in mice is associated with pro-longevity mechanisms due to reduced amino acid levels and altered nutrient signaling
2019-05-29 | GSE129138 | GEO
Project description:14537 epithelial cells from adult human ileum, colon and rectum are performed single-cell transcriptome analysis, cell types and signature genes are presented, so as new representative genes. Bases on the gene expression pattern, difference of cell types, signaling changes, absorption funciton, inmmunity and hormone activity are analyzed. In addition, species diversity is briefly performed by analysis of human and mouse ileum single-cell database.
2019-10-21 | GSE125970 | GEO
Project description:Transcription factors drive organogenesis, from the initiation of cell fate decisions to the maintenance and implementation of these decisions. The Drosophila embryonic salivary gland provides an excellent platform for unraveling the underlying transcriptional networks of organ development because Drosophila is relatively unencumbered by significant genetic redundancy. The highly conserved FoxA family transcription factors are essential for various aspects of organogenesis in all animals that have been studied. Here, we explore the role of the single Drosophila FoxA protein Fork head (Fkh) in salivary gland organogenesis using two genome-wide strategies. A large-scale in situ hybridization analysis reveals a major role for Fkh in maintaining the salivary gland fate decision and controlling salivary gland physiological activity, in addition to its previously known roles in morphogenesis and survival. The majority of salivary gland genes (59%) are affected by fkh loss, mainly at later stages of salivary gland development. We show that global expression of Fkh cannot drive ectopic salivary gland formation. Thus, unlike the worm FoxA protein PHA-4, Fkh does not function to specify cell fate. In addition, Fkh only indirectly regulates many salivary gland genes, which is also distinct from the role of PHA-4 in organogenesis. Our microarray analyses reveal unexpected roles for Fkh in blocking terminal differentiation and in endoreduplication in the salivary gland and in other Fkh-expressing embryonic tissues. Overall, this study demonstrates an important role for Fkh in determining how an organ preserves its identity throughout development and provides an alternative paradigm for how FoxA proteins function in organogenesis.
2011-12-31 | GSE28324 | GEO
Project description:We previously found that the Drosophila FoxA transcription Fork Head (FKH) is necessary for reduced insulin signalling to extend lifespan. We have now identified that increased expression of FKH in neurons alone is sufficient to extend healthy lifespan. We carried out RNA-sequencing in head tissue on controls (daGS>InRDN,GFP-RNAi without RU-486) and reduced insulin signalling with control RNAi (daGS>InRDN,GFP-RNAi with RU486) and reduced insulin signalling with FKH RNAi (daGS>InRDN,FKH-RNAi with RU486). InR-DN stock used: K1409A.
2021-02-03 | E-MTAB-9017 | biostudies-arrayexpress
Project description:When misexpressed in late Drosophila prepupae, the transcription factor Fork head (Fkh) blocks death of the larval salivary glands that normally occurs in the early pupa. The aim of the experiment was to identify genes responding to Fkh that might mediate the effect of the protein on cell death and other biological processes. Fkh was expressed in the line P[hs-Fkh111] from a heat-inducible transgene that encodes wild-type Fkh protein. Expression of Fkh was induced by incubating prepupae for 30 min in a 37 °C water bath, starting at 9.5 hours after puparium formation. Salivary glands were dissected at 14 hours after puparium formation and RNA isolated for microarray analysis with Affymetrix GeneChips. Control samples were obtained from w1118 animals treated the same way. The microarray analysis identified 55 genes annotated as functioning in apoptosis whose expression was at least 1.5-fold changed by Fkh. These genes include the death genes hid and reaper, which play a central role in the control of salivary gland death. Other groups of significantly enriched genes include genes functioning in autophagy, steroid-signaling pathways, salivary gland secretion, and phospholipid metabolism. In addition, the microarray data identify genes as responsive to Fkh that are known to be controlled by the FOXA counterparts of Fkh in vertebrates, indicating that target genes and biological processes controlled by Fkh are evolutionarily conserved. Keywords: ectopic expression experiment
2008-03-20 | GSE8722 | GEO