Arid
DOI10.1111/eva.12015
Riparian ecosystems in human cancers
Alfarouk, Khalid O.; Ibrahim, Muntaser E.2; Gatenby, Robert A.1; Brown, Joel S.3
通讯作者Gatenby, Robert A.
来源期刊EVOLUTIONARY APPLICATIONS
ISSN1752-4571
出版年2013
卷号6期号:1页码:46-53
英文摘要

Intratumoral evolution produces extensive genetic heterogeneity in clinical cancers. This is generally attributed to an increased mutation rate that continually produces new genetically defined clonal lineages. Equally important are the interactions between the heritable traits of cancer cells and their microenvironment that produces natural selection favoring some clonal species over others. That is, while mutations produce the heritable variation, environmental selection and cellular adaptation govern the strategies (and genotypes) that can proliferate within the tumor ecosystem. Here we ask: What are the dominant evolutionary forces in the cancer ecosystem? We propose that the tumor vascular network is a common and primary cause of intratumoral heterogeneity. Specifically, variations in blood flow result in variability in substrate, such as oxygen, and metabolites, such as acid, that serve as critical, but predictable, environmental selection forces. We examine the evolutionary and ecological consequences of variable blood flow by drawing an analogy to riparian habitats within desert landscapes. We propose that the phenotypic properties of cancer cells will exhibit predictable spatial variation within tumor phenotypes as a result of proximity to blood flow. Just as rivers in the desert create an abrupt shift from the lush, mesic riparian vegetation along the banks to sparser, xeric and dry-adapted plant species in the adjacent drylands, we expect blood vessels within tumors to promote similarly distinct communities of cancer cells that change abruptly with distance from the blood vessel. We propose vascular density and blood flow within a tumor as a primary evolutionary force governing variations in the phenotypic properties of cancer cells thus providing a unifying ecological framework for understanding intratumoral heterogeneity.


英文关键词riparian zone terrestrial-aquatic interactions tumor biodiversity tumor cords tumor ecosystems
类型Article
语种英语
国家USA ; Sudan
收录类别SCI-E
WOS记录号WOS:000313878800005
WOS关键词EVOLUTIONARY DYNAMICS ; DRUG-RESISTANCE ; BREAST-CANCER ; TUMORS ; ANGIOGENESIS ; ECOLOGY ; PH ; GROWTH ; GENES ; MICROENVIRONMENT
WOS类目Evolutionary Biology
WOS研究方向Evolutionary Biology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/177086
作者单位1.H Lee Moffitt Canc Ctr & Res Inst, Dept Radiol, Tampa, FL 33612 USA;
2.Univ Khartoum, Inst Endem Dis, Khartoum, Sudan;
3.Univ Illinois, Dept Biol Sci, Chicago, IL 60680 USA
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Alfarouk, Khalid O.,Ibrahim, Muntaser E.,Gatenby, Robert A.,et al. Riparian ecosystems in human cancers[J],2013,6(1):46-53.
APA Alfarouk, Khalid O.,Ibrahim, Muntaser E.,Gatenby, Robert A.,&Brown, Joel S..(2013).Riparian ecosystems in human cancers.EVOLUTIONARY APPLICATIONS,6(1),46-53.
MLA Alfarouk, Khalid O.,et al."Riparian ecosystems in human cancers".EVOLUTIONARY APPLICATIONS 6.1(2013):46-53.
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