Mus musculus
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PROVIDER: PRJNA322521 | ENA |
REPOSITORIES: ENA
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Project description:Multiple levels of transcriptional regulation by PLZF in NKT cell development
| PRJNA322519 | ENA
Project description:Multiple levels of transcriptional regulation by PLZF in NKT cell development [Mouse430_2]
| PRJNA322520 | ENA
Project description:Multiple levels of transcriptional regulation by PLZF in NKT cell development [mouse_ChIP-seq]
| PRJNA322523 | ENA
Project description:Multiple levels of transcriptional regulation by PLZF in NKT cell development [human_ChIP-seq]
| PRJNA322522 | ENA
Project description:The transcription factor PLZF (promyelocytic leukemia zinc finger) is encoded by the BTB domain-containing 16 (Zbtb16) gene. Its repressor function regulates specific transcriptional programs. During the development of invariant natural killer T (NKT) cells, PLZF is expressed and directs their effector program but the detailed mechanisms underlying PLZF regulation of multi-stage NKT cell developmental program are not well understood. This study investigated the role of acetylation-induced PLZF activation on NKT cell development by analyzing mice expressing a mutant form of PLZF mimicking constitutive acetylation (PLZFON mice). NKT populations in PLZFON mice were reduced in proportion and numbers of cells, and the cells present were blocked at the transition from developmental stage 1 to stage 2. NKT cell subset differentiation was also altered, with T-bet+ NKT1 and RORt+ NKT17 subsets dramatically reduced, and the emergence of a T-bet-RORt- NKT cell subset with features of cells in early developmental stages rather than mature NKT2 cells. Preliminary analysis of DNA methylation patterns suggested that activated PLZF acts on the DNA methylation signature to regulate NKT cells’ entry into the early stages of development, while repressing maturation. In wild-type NKT cells, deacetylation of PLZF is possible, allowing subsequent NKT cell differentiation. Interestingly, development of other innate lymphoid and myeloid cells, that are dependent on PLZF for their generation, is not altered in PLZFON mice highlighting lineage specific regulation. Overall, we propose that specific epigenetic control of PLZF through acetylation levels is required to regulate normal NKT cell differentiation. Key points: Constitutive acetylation of PLZF (PLZFON) blocks NKT cell development. PLZFON might act on the DNA methylation signature to control gene expression. PLZF acetylation levels regulate normal NKT cell differentiation.
2021-05-24 | GSE128558 | GEO
Project description:Microarray hybridization was used to compare RNA from mouse brains with opposite genotypes at the Mvb1 (Nxf1) modifier locus for known alternative processing events. 6 samples of total brain RNA, from 3 littermate pairs, were hybridized to splicing-sensitive microarrays *Addendum Depending on the analysis software used, these CEL files may not load correctly using default parameters. This is due to the custom chip type of MJAY not being used during the array scanning step. There are three workarounds known for this problem so far. 1) If using APT, use multiple --chip-type parameters. Specifically, --chip-type mjay --chip-type MJAY --chip-type MoEx-1_0-st-v1.1sq 2) Edit the CEL file by converting to text using the APT command apt-cel-convert, then replacing the MoEx-1_0-st-v1.1sq in the DatHeader line with MJAY (all caps). 3) Edit the .pgf, .clf, and antigenomics.bmp files to use the MoEx-1_0-st-v1.1sq array instead of MJAY for the chip_type and lib_set_name options. (works on AltAnalyze software)
2015-03-10 | E-GEOD-66696 | biostudies-arrayexpress
Project description:The transcription factor PLZF (promyelocytic leukemia zinc finger) is encoded by the BTB 42 domain-containing 16 (Zbtb16) gene. Its repressor function regulates specific transcriptional 43 programs. During the development of invariant natural killer T (NKT) cells, PLZF is 44 expressed and directs their effector program but the detailed mechanisms underlying PLZF 45 regulation of multi-stage NKT cell developmental program are not well understood. This 46 study investigated the role of acetylation-induced PLZF activation on NKT cell development 47 by analyzing mice expressing a mutant form of PLZF mimicking constitutive acetylation (PLZFON mice). NKT populations in PLZFON 48 mice were reduced in proportion and numbers 49 of cells, and the cells present were blocked at the transition from developmental stage 1 to stage 2. NKT cell subset differentiation was also altered, with T-bet+ NKT1 and RORJt + 50 NKT17 subsets dramatically reduced, and the emergence of a T-bet - RORJt - 51 NKT cell subset 52 with features of cells in early developmental stages rather than mature NKT2 cells. Analysis 53 of DNA methylation patterns indicated that activated PLZF establishes a unique DNA 54 methylation signature to regulate NKT cells’ entry into the early stages of development, while 55 repressing maturation. In wild-type NKT cells, deacetylation of PLZF alleviates this 56 repression and allows subsequent NKT cell differentiation. Interestingly, development of 57 other innate lymphoid and myeloid cells, that are dependent on PLZF for their generation, is not altered in PLZFON 58 mice highlighting lineage specific regulation. Overall, we propose that 59 specific epigenetic control of PLZF through acetylation levels is required to regulate normal 60 NKT cell differentiation.
2021-04-21 | GSE171984 | GEO
Project description:To identify genes that require PLZF for their regulation in NKT cells, we compared the developmental stages of thymic NKT cells from wildtype and PLZF-deficient mice The transcription factor PLZF is induced during the development of innate and innate-like lymphocytes to direct their acquisition of a T helper effector program, but the molecular mechanisms involved are poorly understood. Using biotinylation-based ChIP-seq and microarray analysis of both NKT and PLZF-transgenic thymocytes, we identified several layers of regulation of the innate-like NKT effector program: first, PLZF bound and regulated genes encoding cytokine receptors as well as homing and adhesion receptors; second, PLZF bound and activated T helper-specific transcription factor genes that in turn control T helper specific programs; finally, PLZF bound and suppressed the transcription of Bach2, a potent general repressor of effector differentiation in naive T cells. These findings reveal the architecture of the transcriptional program recruited by PLZF and elucidate how a single transcription factor can drive the developmental acquisition of a broad effector program.
2016-05-24 | GSE81771 | GEO
Project description:Cross-linking and immunoprecipitation coupled with high-throughput sequencing was used to identify binding sites within 6,304 genes as the brain RNA targets for TDP-43, an RNA binding protein which when mutated causes Amyotrophic Lateral Sclerosis (ALS). Use of massively parallel sequencing and splicing-sensitive junction arrays revealed that levels of 601 mRNAs are changed (including Fus/Tls, progranulin, and other transcripts encoding neurodegenerative disease-associated proteins) and 965 altered splicing events are detected (including in sortilin, the receptor for progranulin), following depletion of TDP-43 from adult brain with antisense oligonucleotides. RNAs whose levels are most depleted by reduction in TDP-43 are derived from genes with very long introns and which encode proteins involved in synaptic activity. Lastly, TDP-43 was found to auto-regulate its synthesis, in part by directly binding and enhancing splicing of an intron within the 3’ untranslated region of its own transcript, thereby triggering nonsense mediated RNA degradation. 6 samples of polyA-selected RNA were extracted from control-oligo and Tdp43-targeted oligo mouse striatum, and hybridized to custom splice-junction array. *Addendum Depending on the analysis software used, these CEL files may not load correctly using default parameters. This is due to the custom chip type of MJAY not being used during the array scanning step. There are three workarounds known for this problem so far. 1) If using APT, use multiple --chip-type parameters. Specifically, --chip-type mjay --chip-type MJAY --chip-type MoEx-1_0-st-v1.1sq 2) Edit the CEL file by converting to text using the APT command apt-cel-convert, then replacing the MoEx-1_0-st-v1.1sq in the DatHeader line with MJAY (all caps). 3) Edit the .pgf, .clf, and antigenomics.bmp files to use the MoEx-1_0-st-v1.1sq array instead of MJAY for the chip_type and lib_set_name options. (works on AltAnalyze software)
2011-03-03 | E-GEOD-27371 | biostudies-arrayexpress
Project description:Using biotinylation-based ChIP-seq and microarray analysis of both NKT and PLZF-transgenic thymocytes, we identified several layers of regulation of the innate-like NKT effector program. The transcription factor PLZF is induced during the development of innate and innate-like lymphocytes to direct their acquisition of a T helper effector program, but the molecular mechanisms involved are poorly understood. Using biotinylation-based ChIP-seq and microarray analysis of both NKT and PLZF-transgenic thymocytes, we identified several layers of regulation of the innate-like NKT effector program: first, PLZF bound and regulated genes encoding cytokine receptors as well as homing and adhesion receptors; second, PLZF bound and activated T helper-specific transcription factor genes that in turn control T helper specific programs; finally, PLZF bound and suppressed the transcription of Bach2, a potent general repressor of effector differentiation in naive T cells. These findings reveal the architecture of the transcriptional program recruited by PLZF and elucidate how a single transcription factor can drive the developmental acquisition of a broad effector program.
2016-05-24 | GSE81769 | GEO