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Title: Telomerase directly regulates NF-B-dependent transcription
Authors: Ghosh, A.
Saginc, G.
Leow, S.C.
Khattar, E.
Shin, E.M.
Yan, T.D.
Wong, M.
Zhang, Z.
Li, G.
Sung, W.-K. 
Zhou, J.
Chng, W.J.
Li, S.
Liu, E.
Tergaonkar, V.
Issue Date: 2012
Citation: Ghosh, A., Saginc, G., Leow, S.C., Khattar, E., Shin, E.M., Yan, T.D., Wong, M., Zhang, Z., Li, G., Sung, W.-K., Zhou, J., Chng, W.J., Li, S., Liu, E., Tergaonkar, V. (2012). Telomerase directly regulates NF-B-dependent transcription. Nature Cell Biology 14 (12) : 1270-1281. ScholarBank@NUS Repository.
Abstract: Although elongation of telomeres is thought to be the prime function of reactivated telomerase in cancers, this activity alone does not account for all of the properties that telomerase reactivation attributes to human cancer cells. Here, we uncover a link between telomerase and NF-B, a master regulator of inflammation. We observe that while blocking NF-B signalling can inhibit effects of telomerase overexpression on processes relevant to transformation, increasing NF-B activity can functionally substitute for reduced telomerase activity. Telomerase directly regulates NF-B-dependent gene expression by binding to the NF-B p65 subunit and recruitment to a subset of NF-B promoters such as those of IL-6 and TNF-α, cytokines that are critical for inflammation and cancer progression. As NF-B can transcriptionally upregulate telomerase levels, our findings suggest that a feed-forward regulation between them could be the key mechanistic basis for the coexistence of chronic inflammation and sustained telomerase activity in human cancers. © 2012 Macmillan Publishers Limited. All rights reserved.
Source Title: Nature Cell Biology
ISSN: 14657392
DOI: 10.1038/ncb2621
Appears in Collections:Staff Publications

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