Non-cell-autonomous driving of tumour growth supports sub-clonal heterogeneity.

Non-cell-autonomous driving of tumour growth supports sub-clonal heterogeneity.
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DOI:
10.1038/nature13556
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发表时间:
2014-10-02
期刊:
影响因子:
64.8
通讯作者:
Polyak, Kornelia
Polyak, Kornelia
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Marusyk, Andriy;Tabassum, Doris P.;Altrock, Philipp M.;Almendro, Vanessa;Michor, Franziska;Polyak, Kornelia

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Cancers arise through a process of somatic evolution that can result in substantial sub-clonal heterogeneity within tumors. The mechanisms responsible for the coexistence of distinct sub-clones and the biological consequences of this coexistence remain poorly understood. Here we used a mouse xenograft model to investigate the impact of sub-clonal heterogeneity on tumor phenotypes and the competitive expansion of individual clones. We found that tumor growth can be driven by a minor cell subpopulation, which enhances the proliferation of all cells within a tumor by overcoming environmental constraints and yet can be outcompeted by faster proliferating competitors, resulting in tumor collapse. We then developed a mathematical modeling framework to identify the rules underlying the generation of intratumor clonal heterogeneity. We found that non-cell autonomous driving, together with clonal interference, stabilizes sub-clonal heterogeneity, thereby enabling inter-clonal interactions that can lead to new phenotypic traits.
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