The scientists use CRISPR/Cas9-mediated genome editing to demonstrate discrete and opposing roles for the lncRNA Haunt transcript and DNA at the HOXA locus during ESC differentiation.
The authors show that CRISPR-Cas9-mediated ablation of lncRNA-CSR transcription decreases its chromosomal looping-mediated association with the IgH 3′ regulatory region super-enhancer and leads to decreased class switch recombination efficiency. They propose that the RNA exosome protects divergently transcribed lncRNA expressing enhancers by resolving deleterious transcription-coupled secondary DNA structures, while also regulating long-range super-enhancer chromosomal interactions important for cellular function.
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The scientists use CRISPR/Cas9-mediated genome editing to demonstrate discrete and opposing roles for the lncRNA Haunt transcript and DNA at the HOXA locus during ESC differentiation.
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