ISWI chromatin remodeler SMARCA5 is essential for meiotic gene expression and male fertility in mammals
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ABSTRACT:
PROVIDER: PRJNA1171409 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR30943611_1.fastq.gz | Fastqsanger.gz | |||
| SRR30943611_2.fastq.gz | Fastqsanger.gz | |||
| SRR30943612_1.fastq.gz | Fastqsanger.gz | |||
| SRR30943612_2.fastq.gz | Fastqsanger.gz | |||
| SRR30943613_1.fastq.gz | Fastqsanger.gz |
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Project description:Regulation of the transcriptome to promote meiosis is important for sperm development and fertility. However, how chromatin remodeling directs the transcriptome during meiosis in male germ cells is largely unknown. Here, we demonstrate that the ISWI family ATP-dependent chromatin remodeling factor SMARCA5 (SNF2H) plays a critical role in regulating meiotic prophase progression during spermatogenesis. Males with germ cell-specific depletion of SMARCA5 are infertile and unable to form sperm. Loss of Smarca5 results in failure of meiotic progression with abnormal spermatocytes beginning at the pachytene stage and an aberrant global increase in chromatin accessibility, especially at genes important for meiotic prophase.
2024-12-05 | GSE279216 | GEO
Project description:Regulation of the transcriptome to promote meiosis is important for sperm development and fertility. However, how chromatin remodeling directs the transcriptome during meiosis in male germ cells is largely unknown. Here, we demonstrate that the ISWI family ATP-dependent chromatin remodeling factor SMARCA5 (SNF2H) plays a critical role in regulating meiotic prophase progression during spermatogenesis. Males with germ cell-specific depletion of SMARCA5 are infertile and unable to form sperm. Loss of Smarca5 results in failure of meiotic progression with abnormal spermatocytes beginning at the pachytene stage and an aberrant global increase in chromatin accessibility, especially at genes important for meiotic prophase.
| S-EPMC11507727 | biostudies-literature
Project description:Chromatin remodeling is a general mechanism involved in DNA-dependent processes, including gene expression regulation. ISWI ATPase is the catalytic subunit in diverse chromatin remodeling complexes that changing histone–DNA interactions and therefore play a pivotal role in different nuclear processes. Here, the ISWI remodeler was fused to GFP (NH and CO fusions) and its partners were determined by affinity purification-mass spectrometry (MS) assay. This approach identified known ISWI partners (NLP, RCCP and FYRP), previously characterized in T. brucei, and new components of TcISWI complex (DRBD2, DHH1 and proteins containing SMC domains).
2020-05-22 | PXD017869 | Pride
Project description:We hypothesize that the ISWI ATPase Smarca5 plays a role in hematopoietic stem cell development via its interaction partners, and to study the role, we used a mouse model with transgenic expression of SMARCA5 coupled with mass spectrometry analysis. The study uses transgenic SMARCA5 mouse model with conditional hypomorphic allele (lower expression on protein level compared to controls) incorporated into Rosa26 locus, transgenic allele uses endogenous Rosa26 promoter. The transgenic human SMARCA5 protein has a FLAG tag at its C-terminus, which allows specific immunoprecipitation and also differentiation from the endogenous protein (human and mouse SMARCA5 are almost identical at the protein level). To ensure the highest possible expression of the transgenic allele, we used a model that also had one endogenous Smarca5 allele deleted. Various organs (thymus, spleen, brain, kidney, liver, testes, muscle, fetal liver) were isolated from transgenic mice, lysed and then immunoprecipitated using anti-FLAG antibody. The immunoprecipitates were then analyzed using mass spectrometry to determine SMARCA5 interactomes in various tissues. Transgenic human SMARCA5 was confirmed to form all the expected complexes and capable of replacing the functions of the mouse protein. For details, see the publication of Turkova et al. 2024 in Communications Biology.
2024-06-22 | PXD049034 | Pride
Project description:Chromatin remodeling complexes modulate DNA accessibility permitting neuronal progenitor cells to proliferate and differentiate to form the mammalian neocortex. Smarca5 and Smarca1 are the ISWI ATP-ase proteins, within a variety of chromatin remodelling complexes. We created a mouse model with a truncated Smarca1, which inactivates the ATPase nucleosome rearranging activity of the protein. Secondly, using the cre/loxp system, we conditionally removed exon 5 of the Smarca5 gene, resulting in a null allele solely in the cortex of the mouse. Ultimately, we knockout (KO) both the Smarca5 and Smarca1 genes to analyze neocortical neurogenesis at E13.5 and identify their cooperative role during embryonic brain development. The DKO mice reveal significant forebrain hypoplasia.
2023-04-12 | GSE172294 | GEO
Project description:Domain level interactions between the ISWI remodeler SNF2h and reconstituted mononucleosomes were probed by EDC crosslinking under different biochemical conditions: ADP, ADP-BeFx, ADP-BeFx with LANA peptide added (which binds at the acidic patch). A semi quantitative approach was used to monitor domain-domain interactions enriched during the remodeling cycle.
2018-03-07 | MSV000082136 | MassIVE
Project description:Chromatin remodelers influence genetic processes by altering nucleosome occupancy, positioning, and composition. In vitro, yeast ISWI and CHD remodelers require > 20 bp of extranucleosomal DNA for remodeling, but linker DNA in S. cerevisiae averages < 20 bp. To resolve this paradox, we have mapped the genomic distributions of the yeast Isw1, Isw2, and Chd1 remodelers at base-pair resolution. Surprisingly, remodelers are highly enriched at promoter nucleosome depleted regions (5' NDRs), where they bind to regions of extended linker DNA. Remodelers are also enriched in the bodies of genes displaying high nucleosome turnover. We hypothesize that remodelers bind but do not act at 5' NDRs, remaining in physical proximity to gene bodies, where they act on regions of transient nucleosome depletion following transcriptional elongation. We have analyzed the dynamics of yeast ISWI and CHD chromatin remodeler genomic association at base-pair resolution using native chromatin immunoprecipitation followed by sequencing (N-ChIP-seq).
2013-03-01 | E-GEOD-39430 | biostudies-arrayexpress
Project description:Chromatin remodelers influence genetic processes by altering nucleosome occupancy, positioning, and composition. In vitro, yeast ISWI and CHD remodelers require > 20 bp of extranucleosomal DNA for remodeling, but linker DNA in S. cerevisiae averages < 20 bp. To resolve this paradox, we have mapped the genomic distributions of the yeast Isw1, Isw2, and Chd1 remodelers at base-pair resolution. Surprisingly, remodelers are highly enriched at promoter nucleosome depleted regions (5' NDRs), where they bind to regions of extended linker DNA. Remodelers are also enriched in the bodies of genes displaying high nucleosome turnover. We hypothesize that remodelers bind but do not act at 5' NDRs, remaining in physical proximity to gene bodies, where they act on regions of transient nucleosome depletion following transcriptional elongation. We have analyzed the dynamics of yeast ISWI and CHD chromatin remodeler genomic association at base-pair resolution using native chromatin immunoprecipitation followed by sequencing (N-ChIP-seq).
2013-03-01 | E-GEOD-39431 | biostudies-arrayexpress
Project description:Upon fertilization, extensive chromatin reprogramming occurs during preimplantation development. Growing evidence reveals species-dependent regulations of this process in mammals. ATP-dependent chromatin remodeling factor SMARCA5 (also known as SNF2H) is required for peri-implantation development in mice. However, the specific functional role of SMARCA5 in preimplantation development and if it is conserved among species remain unclear. Herein, comparative analysis of public RNA-seq datasets reveals that SMARCA5 is universally expressed during oocyte maturation and preimplantation development in mice, cattle, humans and pigs with species-specific patterns. Immunostaining analysis further describes the temporal and spatial changes of SMARCA5 in both mouse and bovine models. siRNA-mediated SMARCA5 depletion reduces the developmental capability and compromises the specification and differentiation of inner cell mass in mouse preimplantation embryos. Indeed, OCT4 is not restricted into the inner cell mass and the formation of epiblast and primitive endoderm disturbed with reduced NANOG and SOX17 in SMARCA5-deficient blastocysts. RNA-seq analysis shows SMARCA5 depletion causes limited effects on the transcriptomics at the morula stage, however, dysregulates 402 genes, including genes involved in transcription regulation and cell proliferation at the blastocyst stage in mice. By comparison, SMARCA5 depletion does not affect the development through the blastocyst stage but significantly compromises the blastocyst quality in cattle. Primitive endoderm formation is greatly disrupted with reduced GATA6 in bovine blastocysts. Overall, our studies demonstrate the importance of SMARCA5 in fostering the preimplantation development in mice and cattle while there are species-specific effects.
2021-05-31 | GSE171760 | GEO
Project description:Gene expression profiling of ISWI chromatin remodeler mutants before and after DNA damage BAZ1A is a regulatory subunit within the ISWI family of chromatin remodelers in humans. We and others have shown that BAZ1A is required for efficient recovery from DNA damage. The DNA damage hypersensitivity caused by BAZ1A* is as severe as the deletion of the entire gene. This is striking given that BAZ1A* contains only two substitutions (K1181A and K1183Y) within a poorly characterized domain of BAZ1A. We find that this domain can interact with DNA, and that the mutations present in BAZ1A* hinder DNA binding. We used transcriptional profiling to identify molecular events leading to the DNA damage hypersensitivity of BAZ1A* cells.
2017-07-06 | GSE95227 | GEO