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Chromatin-associated LTR RNA m5C oxidation by TET2 regulates chromatin state and leukemogenesis [seq_DNA-ATAC_set2]

ABSTRACT: Chromatin-associated LTR RNA m5C oxidation by TET2 regulates chromatin state and leukemogenesis [seq_DNA-ATAC_set2]

PROVIDER: PRJNA1124379 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR29424319_1.fastq.gz	Fastqsanger.gz
	SRR29424319_2.fastq.gz	Fastqsanger.gz
	SRR29424320_1.fastq.gz	Fastqsanger.gz
	SRR29424320_2.fastq.gz	Fastqsanger.gz
	SRR29424321_1.fastq.gz	Fastqsanger.gz

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Chromatin-associated LTR RNA m5C oxidation by TET2 regulates chromatin state and leukemogenesis [seq_DNA-CUTandTag]

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Chromatin-associated LTR RNA m5C oxidation by TET2 regulates chromatin state and leukemogenesis [seq_DNA-MeDIP]

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TET2 regulates histone H2AK119ub and leukemogenesis through LTR RNA m5C oxidation [seq_DNA-CUTandTag]

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TET2 regulates histone H2AK119ub and leukemogenesis through LTR RNA m5C oxidation [seq_DNA-ATAC]

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Chromatin-associated LTR RNA m5C oxidation by TET2 regulates leukemogenesis

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Chromatin-associated LTR RNA m5C oxidation by TET2 regulates chromatin state and leukemogenesis [seq_RNA-caRNA-m5C-MeRIP]

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Chromatin-associated LTR RNA m5C oxidation by TET2 regulates chromatin state and leukemogenesis [seq_DNA-ATAC_set2]

Project description:Mutation of Ten-eleven translocation enzyme 2 (TET2) drives myeloid malignancy initiation and progression. TET2 deficiency is known to cause a globally opened chromatin state and activation of genes contributing to aberrant hematopoietic stem cell self-renewal. However, the open chromatin observed in TET2-deficient mouse embryonic stem cells, leukemic cells and hematopoietic progenitor and stem cells is inconsistent with the designated role of DNA 5mC oxidation of TET2. We show here that chromatin-associated retrotransposon RNA 5-methylcytosine (m5C) can be recognized by the methyl-CpG-binding domain protein MBD6, which guides deubiquitination of nearby histone H2AK119ub to promote an open chromatin state. TET2 oxidizes m5C and antagonizes this MBD6-dependent H2AK119ub deubiquitination. Thereby, TET2 depletion leads to globally decreased H2AK119ub, more open chromatin, and increased transcription in stem cells. TET2 mutant human leukemia becomes dependent on this gene activation pathway, with MBD6 depletion selectively blocks proliferation of TET2 mutant leukemic cells and fully reverses the hematopoiesis defects caused by Tet2 loss, both in vitro and in vivo. Altogether, our findings reveal a chromatin regulation pathway by TET2 through retrotransposon RNA m5C oxidation and identify the downstream MBD6 protein as a feasible target for developing therapies specific against TET2 mutant malignancies.

2024-07-25 | GSE269958 | GEO

Chromatin-associated LTR RNA m5C oxidation by TET2 regulates chromatin state and leukemogenesis [seq_DNA-CUTandTag]

2024-07-25 | GSE269959 | GEO

Chromatin-associated LTR RNA m5C oxidation by TET2 regulates chromatin state and leukemogenesis [seq_DNA-MeDIP]

2024-07-25 | GSE269960 | GEO

TET2 regulates histone H2AK119ub and leukemogenesis through LTR RNA m5C oxidation [seq_DNA-CUTandTag]

Project description:Mutation of TET2 drives myeloid malignancy progression. TET2 deficiency is known to cause a globally opened chromatin and activation of genes contributing to aberrant HSPC self-renewal. We show here that chromatin-associated retrotransposon RNA 5-methylcytosine (m5C), installed by NSUN2, can be recognized by the methyl-CpG-binding domain protein MBD6, which guides deubiquitylation of nearby histone H2AK119ub to promote an open chromatin state. TET2 oxidizes m5C and antagonizes this MBD6-dependent H2AK119ub deubiquitylation. Thereby, TET2 depletion leads to globally decreased H2AK119ub, more open chromatin, and increased transcription in stem cells. TET2 mutant human leukemia became dependent on this gene activation pathway, with MBD6 silencing selectively inhibits proliferation of TET2 mutant leukemia in vitro and in vivo. Altogether, our findings reveal a previously unknown chromatin regulation pathway by TET2 through retrotransposon RNA m5C oxidation and identify the downstream MBD6 protein as a feasible target for developing therapies specific against TET2 mutant malignancies.

2024-07-25 | GSE241304 | GEO

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