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Human colorectal cancer-specific CCAT1-L lncRNA regulates long-range chromatin interactions at the MYC locus

Open access
Xiang, Jian-Feng, Yin, Qing-Fei, Chen, Tian, Zhang, Yang, Zhang, Xiao-Ou, Wu, Zheng, Zhang, Shaofeng, Wang, Hai-Bin, Ge, Junhui, Lu, Xuhua, Yang, Li, Chen, Ling-Ling·2014·Cell Research

Abstract

The human 8q24 gene desert contains multiple enhancers that form tissue-specific long-range chromatin loops with the MYC oncogene, but how chromatin looping at the MYC locus is regulated remains poorly understood. Here we demonstrate that a long noncoding RNA (lncRNA), CCAT1-L, is transcribed specifically in human colorectal cancers from a locus 515 kb upstream of MYC. This lncRNA plays a role in MYC transcriptional regulation and promotes long-range chromatin looping. Importantly, the CCAT1-L locus is located within a strong super-enhancer and is spatially close to MYC. Knockdown of CCAT1-L reduced long-range interactions between the MYC promoter and its enhancers. In addition, CCAT1-L interacts with CTCF and modulates chromatin conformation at these loop regions. These results reveal an important role of a previously unannotated lncRNA in gene regulation at the MYC locus.

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Metadata

Authors
Xiang, J.-F., Yin, Q.-F., Chen, T., Zhang, Y., Zhang, X.-O., Wu, Z., Zhang, S., Wang, H.-B., Ge, J., Lu, X., Yang, L., & Chen, L.-L.
Venue
Cell Research
Published
2014-03-25
Volume
24
Issue
5
Pages
513-531
ISSN
  • 1001-0602 (ISSN-L)
  • 1748-7838
OpenAlex
W2012935431
Cited by
726
References
20
FWCI
18.76
Type
journal article
Language
en
Open access
hybrid

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CoChat. (2026). Citation check: Human colorectal cancer-specific CCAT1-L lncRNA regulates long-range chromatin interactions at the MYC locus. https://app.cochat.ai/papers/10.1038/cr.2014.35
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Xiang, J.-F., Yin, Q.-F., Chen, T., Zhang, Y., Zhang, X.-O., Wu, Z., Zhang, S., Wang, H.-B., Ge, J., Lu, X., Yang, L., & Chen, L.-L. (2014). Human colorectal cancer-specific CCAT1-L lncRNA regulates long-range chromatin interactions at the MYC locus. Cell Research. https://doi.org/10.1038/cr.2014.35

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