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Polymer nanofiber-based microchips for EGFR mutation analysis of circulating tumor cells in lung adenocarcinoma

Authors Jiang WT, Wang H, Cui YM, Lei YY, Wang YF, Xu D, Jiang N, Chen YS, Sun Y, Zhang Y, Cao J, Ke ZF

Received 17 November 2017

Accepted for publication 18 January 2018

Published 16 March 2018 Volume 2018:13 Pages 1633—1642


Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 3

Editor who approved publication: Dr Lei Yang

Wenting Jiang,1,* Han Wang,1,* Yongmei Cui,1,* Yiyan Lei,2 Yuefeng Wang,1 Di Xu,3 Neng Jiang,1 Yangshan Chen,1 Yu Sun,1 Yang Zhang,4 Jessica Cao,5 Zunfu Ke1

1Department of Pathology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China; 2Department of Thoracic Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China; 3Department of Thoracic Surgery, The Central Hospital of Wuhan, Jiang’an District, Wuhan, Hubei, China; 4Biomedical Engineering, The University of Texas at El Paso, El Paso, TX, USA; 5Cumming School of Medicine, University of Calgary, Calgary, AB, Canada

*These authors contributed equally to this work

Background: Circulating tumor cells (CTCs) detection, an approach considered to be “liquid biopsy”, is a potential alternative method in clinical use for early diagnosis of solid tumor progression.
Methods: In this study, we developed a poly (lactic-co-glycolic acid) (PLGA) – nanofiber (PN)-NanoVelcro chip as an efficient device for simple and rapid capture of CTCs from peripheral blood. We evaluated the device performance by assessing the capture efficiency and purity. Single CTC was isolated via laser microdissection system for subsequent genetic analysis, with an aim to find the concordance of epidermal growth factor receptor (EGFR) mutations between tumor tissue and CTCs.
Results: PN-NanoVelcro chip exhibits great performance in capture efficiency and high purity. The genetic analysis results showed that most EGFR mutation in tumor tissue could also be detected in CTCs.
Conclusion: Compared to computed tomography image results, CTC detection can be implemented throughout the course of diseases and provides an accurate and earlier diagnosis of tumor progression, which make it possible for patients to acquire suitable and timely treatment.

Keywords: PN-NanoVelcro chip, CTCs, EGFR mutation, prognosis, lung adenocarcinoma

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