title: Quantitative Study of Cell Invasion Process under Extracellular Stimulation of Cytokine in a Microfluidic Device.
abstract: Cell invasion is the first step of cancer metastasis that is the primary cause of death for cancer patients and defined as cell movement through extracellular matrix (ECM). Investigation of the correlation between cell invasive and extracellular stimulation is critical for the inhabitation of metastatic dissemination. Conventional cell invasion assay is based on Boyden chamber assay, which has a number of limitations. In this work, a microfluidic device incorporating with impedance measurement technique was developed for quantitative investigation of cell invasion process. The device consisted of 2 reservoirs connecting with a microchannel filled with hydrogel. Malignant cells invaded along the microchannel and impedance measurement was concurrently conducted by measuring across electrodes located at the bottom of the microchannel. Therefore, cell invasion process could be monitored in real-time and non-invasive manner. Also, cell invasion rate was then calculated to study the correlation between cell invasion and extracellular stimulation, i.e., IL-6 cytokine. Results showed that cell invasion rate was directly proportional to the IL-6 concentration. The microfluidic device provides a reliable and convenient platform for cell-based assays to facilitate more quantitative assessments in cancer research.
authors.affiliation: Graduate Institute of Medical Mechatronics, Chang Gung University, Taoyuan, Taiwan.|Department of Mechanical Engineering, Chang Gung University, Taoyuan, Taiwan.|Department of Radiation Oncology, Chang Gung Memorial Hospital, Linkou, Taiwan.
authors.forename: Kin Fong
authors.initials: KF
authors.lastname: Lei
authors.affiliation: Graduate Institute of Medical Mechatronics, Chang Gung University, Taoyuan, Taiwan.
authors.forename: Hsueh-Peng
authors.initials: HP
authors.lastname: Tseng
authors.affiliation: Ph.D. Program in Biomedical Engineering, Chang Gung University, Taoyuan, Taiwan.
authors.forename: Chia-Yi
authors.initials: CY
authors.lastname: Lee
authors.affiliation: Department of Radiation Oncology, Chang Gung Memorial Hospital, Linkou, Taiwan.|School of Traditional Chinese Medicine, Chang Gung University, Taoyuan, Taiwan.
authors.forename: Ngan-Ming
authors.initials: NM
authors.lastname: Tsang
mesh_terms: D002452:Cell Count; D045744:Cell Line, Tumor; D003199:Computer Systems; D016207:Cytokines / Q000494:pharmacology*; D017097:Electric Impedance; D004566:Electrodes; D004867:Equipment Design; D005109:Extracellular Matrix / Q000187:drug effects / Q000378:metabolism*; D005260:Female; D006801:Humans; D056656:Lab-On-A-Chip Devices; D009361:Neoplasm Invasiveness; D009369:Neoplasms / Q000473:pathology*
chemical_list: D016207:Cytokines