Document Detail

Cell lysis inside the capillary facilitated by transverse diffusion of laminar flow profiles (TDLFP).
MedLine Citation:
PMID:  17066286     Owner:  NLM     Status:  MEDLINE    
Chemical cytometry studies the molecular composition of individual cells by means of capillary electrophoresis or capillary chromatography. In one of its realizations an intact cell is injected inside the capillary, the plasma membrane is disrupted to release the cellular contents into the separation buffer, and, finally, the molecules of interest are separated and detected. The solubilization of the plasma membrane with a surfactant is a simple and efficient way of achieving cell lysis inside the capillary. To facilitate cell lysis by a surfactant the cell has to be contacted with the surfactant inside the capillary. We recently introduced a generic method for mixing solutions inside the capillary termed transverse diffusion of laminar flow profiles (TDLFP). In this work, we propose that TDLFP can facilitate efficient cell lysis inside the capillary. Conceptually, a short plug of the surfactant is injected by pressure prior to cell injection. The cell is then injected by pressure within a plug of the physiological buffer. Due to the parabolic profiles of pressure-driven laminar flows the interface between the plug of the surfactant and that of the physiological buffer is predominantly longitudinal. Transverse diffusion mixes the surfactant with the physiological buffer, which leads to surfactant's contact with the cell and subsequent cell lysis. Here, we demonstrate that the proposed concept is valid. TDLFP-facilitated cell lysis by a short plug of the surfactant allows us to exclude the surfactant from the run buffer, and, hence, facilitates modes of separation, which are incompatible with the surfactant's presence in the run buffer. In addition to cell lysis, TDLFP will be used to mix the cellular components with labeling reactants, affinity probes, inhibitors, etc. We foresee that the generic nature and enabling capabilities of TDLFP will speed up the maturation of chemical cytometry into a practical bioanalytical tool.
Maxim V Berezovski; Tak W Mak; Sergey N Krylov
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2006-10-26
Journal Detail:
Title:  Analytical and bioanalytical chemistry     Volume:  387     ISSN:  1618-2642     ISO Abbreviation:  Anal Bioanal Chem     Publication Date:  2007 Jan 
Date Detail:
Created Date:  2006-12-20     Completed Date:  2007-06-18     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101134327     Medline TA:  Anal Bioanal Chem     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  91-6     Citation Subset:  IM    
Department of Chemistry, York University, Toronto, Ontario, M3J 1P3, Canada.
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MeSH Terms
Cell Line
Cytophotometry / methods*
Electrophoresis, Capillary / methods
Eukaryotic Cells / chemistry*,  metabolism
Green Fluorescent Proteins / analysis,  genetics
Octoxynol / chemistry
Reg. No./Substance:
147336-22-9/Green Fluorescent Proteins; 9002-93-1/Octoxynol

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