Document Detail


Real-time label-free monitoring of the cellular response to osmotic stress using conventional and long-range surface plasmons.
MedLine Citation:
PMID:  22863117     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Cell volume and its regulation are key factors for cellular integrity and also serve as indicators of various cell pathologies. SPR sensors represent an efficient tool for real-time and label-free observations of changes in cell volume and shape. Here, we extend this concept by employing the use of long-range surface plasmons (LRSP). Due to the enhanced penetration depth of LRSP (∼1μm, compared to ∼0.4μm of a conventional surface plasmon), the observation of refractive index changes occurring deeper inside the cells is possible. In this work, the responses of a confluent normal rat kidney (NRK) epithelial cell layer to osmotic stress are studied by both conventional and long-range surface plasmons. Experiments are conducted in parallel using cell layers grown and stimulated under the same conditions to enable direct comparison of the results and discrimination of the osmotic stress-induced effects in different parts of the cell.
Authors:
M Vala; R Robelek; M Bocková; J Wegener; J Homola
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-7-21
Journal Detail:
Title:  Biosensors & bioelectronics     Volume:  -     ISSN:  1873-4235     ISO Abbreviation:  Biosens Bioelectron     Publication Date:  2012 Jul 
Date Detail:
Created Date:  2012-8-6     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9001289     Medline TA:  Biosens Bioelectron     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 Elsevier B.V. All rights reserved.
Affiliation:
Institute of Photonics and Electronics, ASCR, Czech Republic.
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