PMID- 30944642 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20200930 IS - 1792-1074 (Print) IS - 1792-1082 (Electronic) IS - 1792-1074 (Linking) VI - 17 IP - 5 DP - 2019 May TI - Label-free microfluidic chip for the identification of mesothelial cell clusters in pleural effusion. PG - 4532-4544 LID - 10.3892/ol.2019.10118 [doi] AB - The detection of tumor cells and clusters in pleural effusion assists in the diagnosis of lung cancer. The proportion of tumor cells and clusters to the total number of cells in each patient varies substantially due to individual differences and the severity of the disease. The identification of one tumor cell or cluster from a large number of pleural effusions is the main challenge for hydrothorax tumor cell detection techniques. In the present study, by using A549 lung cancer and Met-5A mesothelial cell lines, a label-free microfluidic chip based on cell cluster size was designed. By setting the parameters of the chip, individual cells and clusters were able to enter different microfluidic channels. Subsequent to non-specific staining, the recovered components were stained using acridine orange (AO). A charge-coupled device camera was used to captured images of the cell, and the features of these cells were analyzed in their R and G channels using Matlab software to establish the characteristics and finally differentiate between the tumor and non-tumor cell or clusters. According to the results, when inlet A and B were under a velocity of 10 and 8.5 ml/h, respectively, the tumor cell clusters were successfully collected through microfluidic channels III-V, with a recovery rate of ~80%. Subsequent to staining with AO, the feature values in the R and G channels were identified, and initial differentiation was achieved. The present study combined the microfluidic chip, which is based on cluster size, with a computer identification method for pleural effusion. The successful differentiation of tumor cell clusters from non-tumor clusters provides the basis for the identification of tumor clusters in hydrothorax. FAU - Zhao, Lili AU - Zhao L AD - Department of Laboratory Science, School of Laboratory Medicine, Tianjin Medical University, Tianjin 300203, P.R. China. FAU - Zhao, Meng AU - Zhao M AD - Key Laboratory of Computer Vision and System of Ministry of Education, School of Computer Science and Engineering, Tianjin University of Technology, Tianjin 300384, P.R. China. FAU - Yang, Yu AU - Yang Y AD - Department of Laboratory Science, School of Laboratory Medicine, Tianjin Medical University, Tianjin 300203, P.R. China. FAU - Gu, Yajun AU - Gu Y AD - Department of Laboratory Science, School of Laboratory Medicine, Tianjin Medical University, Tianjin 300203, P.R. China. FAU - Zheng, Fang AU - Zheng F AD - Department of Laboratory Science, School of Laboratory Medicine, Tianjin Medical University, Tianjin 300203, P.R. China. FAU - Wang, Xuan AU - Wang X AD - Department of Clinical Laboratory, Tianjin Chest Hospital, Tianjin 300051, P.R. China. FAU - Zheng, Zhiyuan AU - Zheng Z AD - Department of Bone Science, North China University of Science and Technology Affiliated Hospital, Tangshan, Hebei 063000, P.R. China. FAU - Sun, Xuguo AU - Sun X AD - Department of Laboratory Science, School of Laboratory Medicine, Tianjin Medical University, Tianjin 300203, P.R. China. LA - eng PT - Journal Article DEP - 20190306 PL - Greece TA - Oncol Lett JT - Oncology letters JID - 101531236 PMC - PMC6444474 OTO - NOTNLM OT - acridine orange OT - cell cluster OT - image processing OT - lung cancer OT - mesothelial cell OT - microfluidic chip OT - pleural effusion EDAT- 2019/04/05 06:00 MHDA- 2019/04/05 06:01 PMCR- 2019/03/06 CRDT- 2019/04/05 06:00 PHST- 2018/02/02 00:00 [received] PHST- 2019/01/28 00:00 [accepted] PHST- 2019/04/05 06:00 [entrez] PHST- 2019/04/05 06:00 [pubmed] PHST- 2019/04/05 06:01 [medline] PHST- 2019/03/06 00:00 [pmc-release] AID - OL-0-0-10118 [pii] AID - 10.3892/ol.2019.10118 [doi] PST - ppublish SO - Oncol Lett. 2019 May;17(5):4532-4544. doi: 10.3892/ol.2019.10118. Epub 2019 Mar 6.