title: Cell stimulus and lysis in a microfluidic device with segmented gas-liquid flow.
abstract: We describe a microfluidic device with rapid stimulus and lysis of mammalian cells for resolving fast transient responses in cell signaling networks. The device uses segmented gas-liquid flow to enhance mixing and has integrated thermoelectric heaters and coolers to control the temperature during cell stimulus and lysis. Potential negative effects of segmented flow on cell responses are investigated in three different cell types, with no morphological changes and no activation of the cell stress-sensitive mitogen activated protein kinases observed. Jurkat E6-1 cells are stimulated in the device using alpha-CD3, and the resulting activations of ERK and JNK are presented for different time points. Stimulation of cells performed on chip results in pathway activation identical to that of conventionally treated cells under the same conditions.
authors.affiliation: Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
authors.forename: Jamil
authors.initials: J
authors.lastname: El-Ali
authors.forename: Suzanne
authors.initials: S
authors.lastname: Gaudet
authors.forename: Axel
authors.initials: A
authors.lastname: Günther
authors.forename: Peter K
authors.initials: PK
authors.lastname: Sorger
authors.forename: Klavs F
authors.initials: KF
authors.lastname: Jensen
mesh_terms: D000911:Antibodies, Monoclonal / Q000494:pharmacology; D045744:Cell Line, Tumor; D002470:Cell Survival / Q000187:drug effects; D006801:Humans; D019169:Jurkat Cells / Q000187:drug effects; D056656:Lab-On-A-Chip Devices; D046208:Microchip Analytical Procedures / Q000379:methods; D046210:Microfluidic Analytical Techniques / Q000295:instrumentation* / Q000379:methods*; D020928:Mitogen-Activated Protein Kinases / Q000187:drug effects / Q000502:physiology; D012680:Sensitivity and Specificity; D013499:Surface Properties; D013696:Temperature; D013997:Time Factors; D014407:Tumor Cells, Cultured
chemical_list: D000911:Antibodies, Monoclonal; D020928:Mitogen-Activated Protein Kinases