title: Time-lapse scanning surface plasmon microscopy of living adherent cells with a radially polarized beam.
abstract: We report on a fibered high-resolution scanning surface plasmon microscope for long term imaging of living adherent cells. The coupling of a high numerical aperture objective lens and a fibered heterodyne interferometer enhances both the sensitivity and the long term stability of this microscope, allowing for time-lapse recording over several days. The diffraction limit is reached with a radially polarized illumination beam. Adherence and motility of living C2C12 myoblast cells are followed for 50 h, revealing that the dynamics of these cells change after 10 h. This plasmon enhanced evanescent wave microscopy is particularly suited for investigating cell adhesion, since it can not only be performed without staining of the sample but it can also capture in real time the exchange of extracellular matrix elements between the substrate and the cells.
authors.forename: Lotfi
authors.initials: L
authors.lastname: Berguiga
authors.forename: Laura
authors.initials: L
authors.lastname: Streppa
authors.forename: Elise
authors.initials: E
authors.lastname: Boyer-Provera
authors.forename: Cristina
authors.initials: C
authors.lastname: Martinez-Torres
authors.forename: Laurent
authors.initials: L
authors.lastname: Schaeffer
authors.forename: Juan
authors.initials: J
authors.lastname: Elezgaray
authors.forename: Alain
authors.initials: A
authors.lastname: Arneodo
authors.forename: Françoise
authors.initials: F
authors.lastname: Argoul
mesh_terms: D000818:Animals; D002448:Cell Adhesion; D002460:Cell Line; D002470:Cell Survival; D051379:Mice; D008859:Microscopy, Polarization / Q000379:methods*; D032446:Myoblasts / Q000166:cytology*; D020349:Surface Plasmon Resonance; D013997:Time Factors; D059008:Time-Lapse Imaging / Q000379:methods*