Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

CAPTURE2.0 pull-down of SINE-MIR associated proteins in mouse embryonic stem cells

ABSTRACT: In mouse embryonic stem cells, the regulators of transposable elements are not well known. Here, we studied the proteins regulating mammalian-wide interspersed repeat (MIR), a short-interspersed nuclear elements (SINE) family using the CAPTURE2.0 system. We generated cell lines expressing biotinylated dCas9 protein and MIR-targeting sgRNAs, performed biotin pulldown to isolate MIR-associated proteins, and analyzed them using mass spectrometry.

INSTRUMENT(S):

ORGANISM(S): Mus Musculus (mouse)

TISSUE(S): Embryonic Stem Cell

SUBMITTER: Yee Jiun Kok

LAB HEAD: Xuezhi Bi

PROVIDER: PXD062330 | Pride | 2025-04-01

REPOSITORIES: Pride

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
	MIR22-MIR23-set1_TMT6_20211125.raw	Raw
	MIR22-MIR23-set2_TMT6_20211125.raw	Raw
	MIR22-MIR23_TMT6_20211125_PeptideGroups.txt	Txt
	MIR22-MIR23_TMT6_20211125_Proteins.txt	Txt
	Samples-Data_metadata.txt	Txt

Items per page:

1 - 5 of 6

Similar Datasets

Analysis of the interactome of B2-SINE RNA transcripts

Project description:B2-SINEs are noncoding RNAs which are transcribed by RNA polymerase III (Pol III) from short interspersed nuclear elements (SINEs), which are high copy number transposable elements in the mouse genome. Unexpectedly have observed significant induction of non-coding RNAs from the B2-SINE subclass of repeat element RNAs in DRG neurons following sciatic nerve injury. We next sought to identify intracellular targets of GI-SINEs, by protein pull-down from sciatic nerve axoplasm using biotinylated B2-SINE RNA as bait. We generated two constructs from the B2 consensus sequence, comprising 5’ (1-75nt) and 3’ (75-166nt) sequences, both predicted to retain their respective structures, and used the constructs to pull down axoplasm proteins for mass spectrometry analysis. Further confirmatory experiments were performed using the mentioned -175nt sequence vs a control U1 SL3+4 RNA

2025-05-05 | PXD060976 | Pride

B2 SINE expression during MHV68 infecton

Project description:Short interspersed nuclear elements (SINEs) are retrotransposons evolutionarily derived from endogenous RNA Polymerase III RNAs. Though SINE elements have undergone exaptation into gene regulatory elements, how transcribed SINE RNA impacts transcriptional and post-transcriptional regulation is largely unknown. This is partly due to a lack of information regarding which of the loci have transcriptional potential. Here, we present an approach (short interspersed nuclear element sequencing, SINE-seq), which selectively profiles RNA Polymerase III-derived SINE RNA, thereby identifying transcriptionally active SINE loci. Applying SINE-seq to monitor murine B2 SINE expression during a gammaherpesvirus infection revealed transcription from 28,270 SINE loci, with ~50% of active SINE elements residing within annotated RNA Polymerase II loci. Furthermore, B2 RNA can form intermolecular RNA-RNA interactions with complementary mRNAs, leading to nuclear retention of the targeted mRNA via a mechanism involving p54nrb. These findings illuminate a pathway for the selective regulation of mRNA export during stress via retrotransposon activation.

2016-10-31 | GSE85518 | GEO

The oncogenic microRNA miR-222 promotes human LINE-1 retrotransposition

Project description:The Long Interspersed Element-1 (LINE-1) contributes significantly to carcinogenesis and to tumor heterogeneity in many cancer types, including hepatocellular carcinoma (HCC), by its autonomous retrotransposition (RTP) and by its ability to retrotranspose some non-autonomous transposable elements. Previously, multiple proteins and a few microRNAs (miRs) were described as regulators of LINE-1 RTP. Here, we demonstrate that miR-222, which is oncogenic in HCC, promotes LINE-1 RTP in human HCC and some other cell lines in vitro, and that both miR-222-3p and miR-222-5p activate LINE-1 RTP in a cell type-specific manner. We generated miR-222-knockout mutants of the Huh7 and FLC4 HCC cell lines, and performed RNA-seq analysis of Huh7/miR-222-knockout cells and global proteomics analysis of both Huh7 and FLC4 miR-222-knockout mutants. We demonstrate that miR-222 decreases let-7c expression in both Huh7 and FLC4 cells, and that this decrease contributes to promotion of LINE-1 RTP by miR-222 in Huh7 cells.

2025-06-16 | GSE273369 | GEO

The SINEB1 Element in the Long Non-coding RNA Malat1 is Necessary for TDP-43 Proteostasis

Project description:Transposable elements (TEs) comprise a large proportion of long non-coding RNAs (lncRNAs). Here we employed CRISPR to delete a short interspersed nuclear element (SINE) in Malat1, a cancer-associated lncRNA, to investigate its significance in cellular physiology. We show that Malat1 with a SINE deletion forms diffuse nuclear speckles and is frequently translocated to the cytoplasm. SINE-deleted cells exhibit an activated unfolded protein response and PKR and markedly increased DNA damage and apoptosis caused by dysregulation of TDP-43 localization and formation of cytotoxic inclusions. TDP-43 binds stronger to Malat1 without the SINE and is likely ”hijacked” by cytoplasmic Malat1 to the cytoplasm, resulting in the depletion of nuclear TDP-43 and redistribution of TDP-43 binding to repetitive element transcripts and mRNAs encoding mitotic and nuclear-cytoplasmic regulators. The SINE promotes Malat1 nuclear retention by facilitating Malat1 binding to HNRNPK, a protein that drives RNA nuclear retention, potentially through direct interactions of the SINE with KHDRBS1 and TRA2A, which bind to HNRNPK. Losing these RNA-protein interactions due to the SINE deletion likely creates more available TDP-43 binding sites on Malat1 and subsequent TDP-43 aggregation. These results highlight the significance of lncRNA TEs in TDP-43 proteostasis with potential implications in both cancer and neurodegenerative diseases.

2019-12-03 | GSE141303 | GEO

Inhibition of uPA expression by CRISPR-dCas9 DNA methyltransferases

Project description:We report the generation of CRISPR-dCas9 DNA methyltransferases to mediate targeted DNA methylation. Using the dCas9-BFP-DNMT3A and dCas9-BFP-DNMT3B methyltransferases, we have demonstrated that these two methyltransferase can mediate targeted methylation in three human genes tested: uPA, TGFBR3, and CDKN2A in human HEK293T cells. We also showed that these methyltransferases could mediate gene inhibition. five samples co-transfected with five uPA sgRNAs and each of the four dCas9 fusions, or control transfection with pUC19 plasmid

2016-06-01 | E-GEOD-74935 | biostudies-arrayexpress

Rapid functional annotation of native enhancers in embryonic stem cells with a Neisseria meningitidis CRISPR-Cas9 system (BeadChip)

Project description:Gene regulatory elements such as enhancers have profound effects on cellular function, health, and disease. Our understanding of mammalian enhancer function is limited by the lack of a technology that would allow for a rapid and thorough test of their cell type-specific function. Here, we describe a novel Cas9-effector system that enables rapid testing and functional annotation of native enhancers in embryonic stem cells. Total RNA obtained from R26 dCas9-effector mESC lines after viral delivery of sgRNAs directed against proximal promoter or enhancer regions

2015-03-03 | E-GEOD-64057 | biostudies-arrayexpress

CRISPRTE: A web-based tool to generate single guide RNA targets transposable elements

Project description:CRISPR/Cas systems have gained prominence as powerful tools for genome engineering. Recent investigations into the crucial role of transposable elements (TEs) have stimulated research interest in manipulating TEs to elucidate their functions. Nevertheless, designing single guide RNAs (sgRNAs) that are both specific and efficient for TE manipulation presents a formidable challenge, considering the repetitive nature and high copy numbers of TEs. Although various sgRNA design tools have been developed for gene editing, an optimized sgRNA designer explicitly for TE manipulation has yet to be established. To bridge this gap, we presented CRISPR-TE, a web-based application featuring an accessible graphical user interface, available at https://www.crisprte.cn. CRISPR-TE could identify all potential sgRNAs for TEs and offers a comprehensive solution for efficient TE targeting at both the single duplicate and subfamily levels. We also demonstrated that young TEs can be targeted with higher coverage at the subfamily level. Finally, we validated the overexpression of SVAD, a human-specific TE, using dCas9-VP64 activator incorporated with three sgRNAs designed by our tool. Collectively, our findings suggest that CRISPR-TE may serve as a versatile framework for designing sgRNAs aimed at TE targeting.

2024-03-24 | GSE228266 | GEO

Modulating immune cell fate and inflammation through CRISPR-mediated DNA methylation editing [dCas9-DNMT3A ChIP-seq]

Project description:To investigate the genome-wide occupancy of the DNA methylation editing tool dCas9-DNMT3A in cells harboring non-targeting sgRNAs (CTRL) and cells harboring sgRNAs targeting the IL1RN promoter (sgIL1RN).

2025-06-02 | GSE270885 | GEO

H3K9me3 chIP-seq 5 days following disruption of the SETDB1 H3K9 trimethylase with two different sgRNAs (6, and 9) or non-targeting control

Project description:We performed H3K9me3 chIP-seq 5 days following disruption of the SETDB1 H3K9 trimethylase with two different sgRNAs (6, and 9) or non-targeting control. Our data suggests that H3K9me3 is modestly reduced over transposable elements and some ZNF genes following disruption of SETDB1.

2017-09-06 | GSE103408 | GEO

PETACC-8 miR-31-3p and miR-31-5p Ancillary Study

Project description:This is a prospective-retrospective study to determine if the expression of the miRNA’s miR-31-3p and miR-31-5p are prognostic of patient outcomes or predictive of the benefit from anti-EGFR therapy in stage III Colon Cancer. The present study will utilize FFPE tumor samples collected from patients enrolled in the PETACC-8 study conducted by the Fédération Francophone de Cancérologie Digestive (FFCD). This phase 3 clinical trial prospectively randomized fully resected stage III colon cancer patients to receive adjuvant treatment with either FOLFOX-4 plus cetuximab or FLOFOX-4 alone.

| 2260465 | ecrin-mdr-crc

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

Tweets

OmicsDI Databases

PRIDE
PeptideAtlas
MassIVE
JPOST Repository
Physiome Model Repository

EGA
EVA
ENA
LINCS
PAXDB
Cell Collective

MetaboLights
Metabolomics Workbench
MetabolomeExpress
GNPS
BioModels
FAIRDOMHub

ArrayExpress
dbGaP
ExpressionAtlas
GEO
NODE

Information

Databases
Help
API
Contact us
Code on GitHub
Terms of use
Submit Data