Ageing and the telomere connection: An intimate relationship with inflammation

© 2015 Elsevier B.V. Telomeres are the heterochromatic repeat regions at the ends of eukaryotic chromosomes, whose length is considered to be a determinant of biological ageing. Normal ageing itself is associated with telomere shortening. Here, critically short telomeres trigger senescence and event...

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Main Authors: Zhang, J., Rane, G., Dai, X., Shanmugam, M., Arfuso, Frank, Samy, R., Lai, M., Kappei, D., Kumar, Alan Prem, Sethi, G.
Format: Journal Article
Published: 2016
Online Access:http://hdl.handle.net/20.500.11937/24758
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author Zhang, J.
Rane, G.
Dai, X.
Shanmugam, M.
Arfuso, Frank
Samy, R.
Lai, M.
Kappei, D.
Kumar, Alan Prem
Sethi, G.
author_facet Zhang, J.
Rane, G.
Dai, X.
Shanmugam, M.
Arfuso, Frank
Samy, R.
Lai, M.
Kappei, D.
Kumar, Alan Prem
Sethi, G.
author_sort Zhang, J.
building Curtin Institutional Repository
collection Online Access
description © 2015 Elsevier B.V. Telomeres are the heterochromatic repeat regions at the ends of eukaryotic chromosomes, whose length is considered to be a determinant of biological ageing. Normal ageing itself is associated with telomere shortening. Here, critically short telomeres trigger senescence and eventually cell death. This shortening rate may be further increased by inflammation and oxidative stress and thus affect the ageing process. Apart from shortened or dysfunctional telomeres, cells undergoing senescence are also associated with hyperactivity of the transcription factor NF-?B and overexpression of inflammatory cytokines such as TNF-a, IL-6, and IFN-? in circulating macrophages. Interestingly, telomerase, a reverse transcriptase that elongates telomeres, is involved in modulating NF-?B activity. Furthermore, inflammation and oxidative stress are implicated as pre-disease mechanisms for chronic diseases of ageing such as neurodegenerative diseases, cardiovascular disease, and cancer. To date, inflammation and telomere shortening have mostly been studied individually in terms of ageing and the associated disease phenotype. However, the interdependent nature of the two demands a more synergistic approach in understanding the ageing process itself and for developing new therapeutic approaches. In this review, we aim to summarize the intricate association between the various inflammatory molecules and telomeres that together contribute to the ageing process and related diseases.
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spelling curtin-20.500.11937-247582017-09-13T15:15:01Z Ageing and the telomere connection: An intimate relationship with inflammation Zhang, J. Rane, G. Dai, X. Shanmugam, M. Arfuso, Frank Samy, R. Lai, M. Kappei, D. Kumar, Alan Prem Sethi, G. © 2015 Elsevier B.V. Telomeres are the heterochromatic repeat regions at the ends of eukaryotic chromosomes, whose length is considered to be a determinant of biological ageing. Normal ageing itself is associated with telomere shortening. Here, critically short telomeres trigger senescence and eventually cell death. This shortening rate may be further increased by inflammation and oxidative stress and thus affect the ageing process. Apart from shortened or dysfunctional telomeres, cells undergoing senescence are also associated with hyperactivity of the transcription factor NF-?B and overexpression of inflammatory cytokines such as TNF-a, IL-6, and IFN-? in circulating macrophages. Interestingly, telomerase, a reverse transcriptase that elongates telomeres, is involved in modulating NF-?B activity. Furthermore, inflammation and oxidative stress are implicated as pre-disease mechanisms for chronic diseases of ageing such as neurodegenerative diseases, cardiovascular disease, and cancer. To date, inflammation and telomere shortening have mostly been studied individually in terms of ageing and the associated disease phenotype. However, the interdependent nature of the two demands a more synergistic approach in understanding the ageing process itself and for developing new therapeutic approaches. In this review, we aim to summarize the intricate association between the various inflammatory molecules and telomeres that together contribute to the ageing process and related diseases. 2016 Journal Article http://hdl.handle.net/20.500.11937/24758 10.1016/j.arr.2015.11.006 restricted
spellingShingle Zhang, J.
Rane, G.
Dai, X.
Shanmugam, M.
Arfuso, Frank
Samy, R.
Lai, M.
Kappei, D.
Kumar, Alan Prem
Sethi, G.
Ageing and the telomere connection: An intimate relationship with inflammation
title Ageing and the telomere connection: An intimate relationship with inflammation
title_full Ageing and the telomere connection: An intimate relationship with inflammation
title_fullStr Ageing and the telomere connection: An intimate relationship with inflammation
title_full_unstemmed Ageing and the telomere connection: An intimate relationship with inflammation
title_short Ageing and the telomere connection: An intimate relationship with inflammation
title_sort ageing and the telomere connection: an intimate relationship with inflammation
url http://hdl.handle.net/20.500.11937/24758