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Clonal Evolution in Healthy and Premalignant Tissues: Implications for Early Cancer Interception Strategies

Rane, Jayant K; Frankell, Alexander M; Weeden, Clare E; Swanton, Charles; (2023) Clonal Evolution in Healthy and Premalignant Tissues: Implications for Early Cancer Interception Strategies. Cancer Prevention Research , 16 (7) pp. 369-378. 10.1158/1940-6207.CAPR-22-0469. Green open access

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Abstract

Histologically normal human tissues accumulate significant mutational burden with age. The extent and spectra of mutagenesis are comparable both in rapidly proliferating and post-mitotic tissues and in stem cells compared to their differentiated progeny. Some of these mutations provide increased fitness, giving rise to clones which, at times, can replace the entire surface area of tissues. Compared to cancer, somatic mutations in histologically normal tissues are primarily single nucleotide variations. Interestingly though, the presence of these mutations and positive clonal selection in isolation remains a poor indicator of potential future cancer transformation in solid tissues. Common clonally expanded mutations in histologically normal tissues also do not always represent the most frequent early mutations in cancers of corresponding tissues, indicating differences in selection pressures. Preliminary evidence implies that stroma and immune system co-evolve with age, which may impact selection dynamics. In this review, we will explore the mutational landscape of histologically normal and pre-malignant human somatic tissues in detail and discuss cell-intrinsic and environmental factors that can determine the fate of positively selected mutations within them. Precisely pinpointing these determinants of cancer transformation would aid development of early cancer interventional and prevention strategies.

Type: Article
Title: Clonal Evolution in Healthy and Premalignant Tissues: Implications for Early Cancer Interception Strategies
Location: United States
Open access status: An open access version is available from UCL Discovery
DOI: 10.1158/1940-6207.CAPR-22-0469
Publisher version: https://doi.org/10.1158/1940-6207.CAPR-22-0469
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences > Cancer Institute
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences > Cancer Institute > CRUK Cancer Trials Centre
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences > Cancer Institute > Research Department of Oncology
URI: https://discovery.ucl.ac.uk/id/eprint/10169500
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