Modeling EV Kinetics for Use in Early Cancer Detection.
Modeling EV Kinetics for Use in Early Cancer Detection.
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DOI:
10.1002/adbi.201900305
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发表时间:
2020-12
影响因子:
4.1
通讯作者:
Weissleder R
中科院分区:
文献类型:
--
作者:
Ferguson S;Weissleder R
Tumor-derived extracellular vesicles (EV) represent promising biomarkers for monitoring cancers. Technological advances have improved our ability to measure EV reliably in blood using protein, RNA or lipid detection methods. However, it is less clear how efficacious current EV assays are for the early detection of small and thus curable tumors. Here, we developed a mathematical model to estimate key parameter values and future requirements for EV testing. Tumor volumes in mice correlated well with increases in total number of circulating EV allowing us to calculate EV shed rates for four different published cancer models. Model extrapolations to human physiology showed good agreement with published clinical data. Specifically, we show that current bulk EV detection systems are ~104 -fold too insensitive to detect human cancers of ~1 cm3. Conversely, we predict that emerging single EV methods will allow blood based detection of cancers of < 1 mm3 in humans. A mathematical-model was used to predict the concentration of tumor-derived EVs in circulation as a function of tumor size. Emerging single-EV technologies (SEA, DEST, ddPCR) are positioned to detect rare, tumor-EVs for the early discovery of small tumors (< 1 mm3) in humans.
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