title: A microfluidic dual capillary probe to collect messenger RNA from adherent cells and spheroids.
abstract: Collection of bioanalytes from single cells is still a challenging technology despite the recent progress in many integrated microfluidic devices. A microfluidic dual capillary probe was prepared from a theta (theta)-shaped glass capillary to analyze messenger RNA (mRNA) from adherent cells and spheroids. The cell lysis buffer solution was introduced from the injection aperture, and the cell-lysed solution from the aspiration aperture was collected for further mRNA analysis based on reverse transcription real-time PCR. The cell lysis buffer can be introduced at any targeted cells and never spilled out of the targeted area by using the microfluidic dual capillary probe because laminar flow was locally formed near the probe under the optimized injection/aspiration flow rates. This method realizes the sensitivity of mRNA at the single cell level and the identification of the cell types on the basis of the relative gene expression profiles.
authors.affiliation: Graduate School of Environmental Studies, Tohoku University, Aobe 6-6-11-604, Sendai 980-8579, Japan. shiku@bioinfo.che.tohoku.ac.jp
authors.forename: Hitoshi
authors.initials: H
authors.lastname: Shiku
authors.forename: Takeshi
authors.initials: T
authors.lastname: Yamakawa
authors.forename: Yuji
authors.initials: Y
authors.lastname: Nashimoto
authors.forename: Yasufumi
authors.initials: Y
authors.lastname: Takahashi
authors.forename: Yu-Suke
authors.initials: YS
authors.lastname: Torisawa
authors.forename: Tomoyuki
authors.initials: T
authors.lastname: Yasukawa
authors.forename: Takahiro
authors.initials: T
authors.lastname: Ito-Sasaki
authors.forename: Masaki
authors.initials: M
authors.lastname: Yokoo
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Abe
authors.forename: Hideki
authors.initials: H
authors.lastname: Kambara
authors.forename: Tomokazu
authors.initials: T
authors.lastname: Matsue
mesh_terms: D002448:Cell Adhesion; D006801:Humans; D044085:Microfluidics / Q000295:instrumentation* / Q000379:methods*; D015347:RNA Probes / Q000737:chemistry; D012333:RNA, Messenger / Q000302:isolation & purification*; D018874:Spheroids, Cellular / Q000737:chemistry*; D014407:Tumor Cells, Cultured
chemical_list: D015347:RNA Probes; D012333:RNA, Messenger