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Long Non-Coding RNAs Control Hematopoietic Stem Cell Function
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DOI：10.1016/j.stem.2015.02.002.png)
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摘要
En 中文
Hematopoietic stem cells (HSCs) possess unique gene expression programs that enforce their identity and regulate lineage commitment. Long non-coding RNAs (IncRNAs) have emerged as important regulators of gene expression and cell fate decisions, although their functions in HSCs are unclear. Here we profiled the transcriptome of purified HSCs by deep sequencing and identified 323 unannotated IncRNAs. Comparing their expression in differentiated lineages revealed 159 IncRNAs enriched in HSCs, some of which are likely HSC specific (LncHSCs). These IncRNA genes share epigenetic features with protein-coding genes, including regulated expression via DNA methylation, and knocking down two LncHSCs revealed distinct effects on HSC self-renewal and lineage commitment. We mapped the genomic binding sites of one of these candidates and found enrichment for key hematopoietic transcription factor binding sites, especially E2A. Together, these results demonstrate that IncRNAs play important roles in regulating HSCs, providing an additional layer to the genetic circuitry controlling HSC function.
Keyword:
GENE
TRANSCRIPTION
PRINCIPLES
REVEALS
MUTATIONS
LINCRNAS
LINEAGE
DNMT3A
CANCER
HSCS
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