Role of LIN-15A on the binding of LIN-15B and LIN-35
Ontology highlight
ABSTRACT:
ORGANISM(S): Caenorhabditis elegans
PROVIDER: GSE325892 | GEO | 2026/03/31
REPOSITORIES: GEO
Dataset's files
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Project description:Transcriptional profiling of C. elegans first larval stage whole animals comparing lin-15B(n744) mutants and N2 (wild type) at 26 degrees. One-condition experiment, mutant (lin-15B) vs. WT. Biological replicates 4 mutant, 4 wildtype harvested indepedently. One lin-35 replicate and one WT replicate per array.
2011-01-25 | E-GEOD-26823 | biostudies-arrayexpress
Project description:modENCODE_submission_2610 This submission comes from a modENCODE project of Michael Snyder. For full list of modENCODE projects, see http://www.genome.gov/26524648 Project Goal: We are identifying the DNA binding sites for 300 transcription factors in C. elegans. Each transcription factor gene is tagged with the same GFP fusion protein, permitting validation of the gene's correct spatio-temporal expression pattern in transgenic animals. Chromatin immunoprecipitation on each strain is peformed using an anti-GFP antibody, and any bound DNA is deep-sequenced using Solexa GA2 technology. For data usage terms and conditions, please refer to http://www.genome.gov/27528022 and http://www.genome.gov/Pages/Research/ENCODE/ENCODEDataReleasePolicyFinal2008.pdf EXPERIMENT TYPE: CHIP-seq. BIOLOGICAL SOURCE: Strain: OP184(made_by : S Kim description : This strain's transgene was constructed by Mihail Sarov at the Max Planck Institute for Cell Biology in Tubiginen using Tony Hyman's recombineering pipeline. The resulting plasmid was used for biolistic transformation of an unc-119(ed3) strain. The LIN-15B::EGFP fusion protein is expressed in the correct lin-15B spatio-temporal expression pattern. This strain was used for ChIP-seq experiments to map the in vivo binding sites for the LIN-15B transcription factor. tags : GFP::3xFlag mutagen : Bombard outcross : 3 genotype : unc119(ed3);wgIs184(lin-15B::TY1 EGFP FLAG;unc119) official name : OP184 ); Developmental Stage: L3; Genotype: unc119(ed3);wgIs184(lin-15B::TY1 EGFP FLAG;unc119); Sex: Hermaphrodite; EXPERIMENTAL FACTORS: Developmental Stage L3; Target gene lin-15B; Strain OP184(made_by : S Kim description : This strain's transgene was constructed by Mihail Sarov at the Max Planck Institute for Cell Biology in Tubiginen using Tony Hyman's recombineering pipeline. The resulting plasmid was used for biolistic transformation of an unc-119(ed3) strain. The LIN-15B::EGFP fusion protein is expressed in the correct lin-15B spatio-temporal expression pattern. This strain was used for ChIP-seq experiments to map the in vivo binding sites for the LIN-15B transcription factor. tags : GFP::3xFlag mutagen : Bombard outcross : 3 genotype : unc119(ed3);wgIs184(lin-15B::TY1 EGFP FLAG;unc119) official name : OP184 ); temp (temperature) 20 degree celsius Series_type: CHIP-seq
2011-02-18 | E-GEOD-25802 | biostudies-arrayexpress
Project description:modENCODE_submission_3589 This submission comes from a modENCODE project of Michael Snyder. For full list of modENCODE projects, see http://www.genome.gov/26524648 Project Goal: We are identifying the DNA binding sites for 300 transcription factors in C. elegans. Each transcription factor gene is tagged with the same GFP fusion protein, permitting validation of the gene's correct spatio-temporal expression pattern in transgenic animals. Chromatin immunoprecipitation on each strain is peformed using an anti-GFP antibody, and any bound DNA is deep-sequenced using Solexa GA2 technology. For data usage terms and conditions, please refer to http://www.genome.gov/27528022 and http://www.genome.gov/Pages/Research/ENCODE/ENCODEDataReleasePolicyFinal2008.pdf EXPERIMENT TYPE: CHIP-seq. BIOLOGICAL SOURCE: Strain: OP184(official name : OP184 genotype : unc119(ed3);wgIs184(lin-15B::TY1 EGFP FLAG;unc119) outcross : 3 mutagen : Bombard tags : GFP::3xFlag description : This strain's transgene was constructed by Mihail Sarov at the Max Planck Institute for Cell Biology in Tubiginen using Tony Hyman's recombineering pipeline. The resulting plasmid was used for biolistic transformation of an unc-119(ed3) strain. The LIN-15B::EGFP fusion protein is expressed in the correct lin-15B spatio-temporal expression pattern. This strain was used for ChIP-seq experiments to map the in vivo binding sites for the LIN-15B transcription factor. made_by : S Kim ); Developmental Stage: fed L1; Genotype: unc119(ed3);wgIs184(lin-15B::TY1 EGFP FLAG;unc119); Sex: Hermaphrodite; EXPERIMENTAL FACTORS: Developmental Stage fed L1; Target gene lin-15B; Strain OP184(official name : OP184 genotype : unc119(ed3);wgIs184(lin-15B::TY1 EGFP FLAG;unc119) outcross : 3 mutagen : Bombard tags : GFP::3xFlag description : This strain's transgene was constructed by Mihail Sarov at the Max Planck Institute for Cell Biology in Tubiginen using Tony Hyman's recombineering pipeline. The resulting plasmid was used for biolistic transformation of an unc-119(ed3) strain. The LIN-15B::EGFP fusion protein is expressed in the correct lin-15B spatio-temporal expression pattern. This strain was used for ChIP-seq experiments to map the in vivo binding sites for the LIN-15B transcription factor. made_by : S Kim ); temp (temperature) 20 degree celsius
2013-02-04 | E-GEOD-44008 | biostudies-arrayexpress
Project description:Transcriptional profiling of C. elegans first larval stage whole animals comparing lin-15B(n744) mutants and N2 (wild type) at 26 degrees.
2011-01-25 | GSE26823 | GEO
Project description:The Nanos family of RNA-binding proteins has been implicated in the specification of primordial germ cells (PGCs) in a wide range of metazoans, but the underlying mechanisms remain poorly understood. We have profiled the transcriptome of PGCs lacking the nanos homologues nos-1 and nos-2 in C. elegans using cell sorting and RNA-seq. nos-1nos-2 PGCs fail to silence hundreds of genes normally expressed in oocytes and somatic cells, a phenotype reminiscent of PGCs lacking the repressive PRC2 complex. The nos-1nos-2 phenotype depends on LIN-15B, a broadly expressed synMuvB class transcription factor known to antagonize PRC2 activity in somatic cells. LIN-15B is maternally-inherited by all embryonic cells and is down-regulated specifically in PGCs in a nos-1nos-2-dependent manner. Consistent with LIN-15B being a critical target of Nanos regulation, inactivation of maternal LIN-15B restores fertility to nos-1nos-2 mutants. These studies demonstrate a central role for Nanos in reprogramming the transcriptome of primordial germ cells away from an oocyte/somatic fate by down-regulating an antagonist of PRC2 activity.
2017-12-08 | GSE100652 | GEO
Project description:The DREAM (DP, Retinoblastoma [Rb]-like, E2F, and MuvB) complex controls cellular quiescence by repressing cell cycle and other genes, but its mechanism of action is unclear. Here we demonstrate that two C. elegans THAP domain proteins, LIN-15B and LIN-36, co-localize with DREAM and function by different mechanisms for repression of distinct sets of targets. LIN-36 represses classical cell cycle targets by promoting DREAM binding and gene body enrichment of H2A.Z. Furthermore, the function of DREAM subunit EFL-1/E2F is specific for LIN-36 targets. In contrast, LIN-15B represses a subset of germline targets by facilitating H3K9me2 promoter marking. In humans, THAP proteins have been implicated in cell cycle regulation by poorly understood mechanisms. We propose that THAP domain proteins are key mediators of Rb/DREAM function, facilitating repression of distinct sets of targets.
2020-08-13 | GSE155190 | GEO
Project description:The DREAM (DP, Retinoblastoma [Rb]-like, E2F, and MuvB) complex controls cellular quiescence by repressing cell cycle and other genes, but its mechanism of action is unclear. Here we demonstrate that two C. elegans THAP domain proteins, LIN-15B and LIN-36, co-localize with DREAM and function by different mechanisms for repression of distinct sets of targets. LIN-36 represses classical cell cycle targets by promoting DREAM binding and gene body enrichment of H2A.Z. Furthermore, the function of DREAM subunit EFL-1/E2F is specific for LIN-36 targets. In contrast, LIN-15B represses a subset of germline targets by facilitating H3K9me2 promoter marking. In humans, THAP proteins have been implicated in cell cycle regulation by poorly understood mechanisms. We propose that THAP domain proteins are key mediators of Rb/DREAM function, facilitating repression of distinct sets of targets.
2020-08-13 | GSE155189 | GEO
Project description:The highly conserved DREAM transcriptional repressor complex contains an RB-like pocket protein, an E2F-DP transcription factor heterodimer, and the 5-subunit MuvB complex. Using CRISPR/Cas9 targeted mutagenesis, we disrupted the interaction between the sole Caenorhabditis elegans pocket protein LIN-35 and the MuvB subunit LIN-52. A triple alanine substitution of LIN-52's LxCxE motif (3A) severed LIN-35-MuvB association and caused classical DREAM mutant phenotypes, including synthetic multiple vulvae, high-temperature arrest, and ectopic expression of germline genes in the soma. We performed RNA-seq in lin-52(3A) mutant late embryos (4 replicates) compared to lin-52(WT) wild-type late embryos (4 replicates) to assess the genome-wide effects on gene expression that result from severing LIN-35-MuvB association.
2022-05-24 | GSE199287 | GEO
Project description:The Retinoblastoma-like pocket proteins p130 and p107 act as gatekeepers of the cell cycle through their activity within the DREAM (Dp/Rb-like/E2F/MuvB) transcriptional repressor complex. The goal of this study was to address how the pocket protein contributes to DREAM complex assembly and function on chromatin by utilizing a protein null mutant of the only C. elegans pocket protein LIN-35. We performed ChIP-seq of C. elegans DRM subunits in wild-type and lin-35 null late embryos to assess the effect on their chromatin localization following loss of LIN-35.
2017-10-25 | GSE95071 | GEO
Project description:Maternally synthesized products play critical roles in development of offspring. A premier example is the C. elegans H3K36 methyltransferase MES-4, which is essential for germline survival and development in offspring. How maternal MES-4 protects the germline is not well understood, but its role in H3K36 methylation hinted that it may regulate gene expression in Primordial Germ Cells (PGCs). We tested this hypothesis by profiling transcripts from nascent germlines (PGCs and their descendants) dissected from wild-type and mes-4 mutant (lacking maternal and zygotic MES-4) larvae. mes-4 nascent germlines displayed down-regulation of some germline genes, up-regulation of some somatic genes, and dramatic up-regulation of hundreds of genes on the X chromosome. We demonstrated that up-regulation of 1 or more genes on the X is the cause of germline death by generating and analyzing mes-4 mutants that inherited different endowments of X chromosome(s). Intriguingly, removal of the THAP transcription factor LIN-15B from mes-4 mutants reduced X mis-expression and prevented germline death. lin-15B is X-linked and mis-expressed in mes-4 PGCs, identifying it as a critical target for MES-4 repression. The above findings extend to the H3K27 methyltransferase MES-2/3/6, the C. elegans version of Polycomb Repressive Complex 2. We propose that maternal MES-4 and PRC2 cooperate to protect germline survival by preventing synthesis of germline-toxic products encoded by genes on the X chromosome, including the key transcription factor LIN-15B.
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