Gelatin Nanoparticle-Coated Silicon Beads for Density-Selective Capture and Release of Heterogeneous Circulating Tumor Cells with High Purity.
Gelatin Nanoparticle-Coated Silicon Beads for Density-Selective Capture and Release of Heterogeneous Circulating Tumor Cells with High Purity.
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明胶纳米颗粒涂层硅珠,用于高纯度异质循环肿瘤细胞的密度选择性捕获和释放。
DOI:
10.7150/thno.23531
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发表时间:
2018
期刊:
影响因子:
12.4
通讯作者:
Zhao XZ
中科院分区:
文献类型:
--
作者:
Huang Q;Wang FB;Yuan CH;He Z;Rao L;Cai B;Chen B;Jiang S;Li Z;Chen J;Liu W;Guo F;Ao Z;Chen S;Zhao XZ
Background: Circulating tumor cells (CTCs) are a burgeoning topic in cancer biomarker discovery research with minimal invasive blood draws. CTCs can be used as potential biomarkers for disease prognosis, early cancer diagnosis and pharmacodynamics. However, the extremely low abundance of CTCs limits their clinical utility because of technical challenges such as the isolation and subsequent detailed molecular and functional characterization of rare CTCs from patient blood samples. Methods: In this study, we present a novel density gradient centrifugation method employing biodegradable gelatin nanoparticles coated on silicon beads for the isolation, release, and downstream analysis of CTCs from colorectal and breast cancer patients. Results: Using clinical patient/spiked samples, we demonstrate that this method has significant CTC-capture efficiency (>80%) and purity (>85%), high CTC release efficiency (94%) and viability (92.5%). We also demonstrate the unparalleled robustness of our method in downstream CTC analyses such as the detection of PIK3CA mutations. Conclusion: The efficiency and versatility of the multifunctional density microbeads approach provides new opportunities for personalized cancer diagnostics and treatments.
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影响因子:
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通讯作者:
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