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Artificially-induced organelles are optimal targets for optical trapping experiments in living cells
López-Quesada, Carol; Fontaine, Anne-Sophie; Farré, Arnau; Joseph, Minu; Selva Sánchez, Javier; Egea Guri, Gustavo; Ludevid, Dolors; Martín Badosa, Estela; Montes Usategui, Mario
Universitat de Barcelona
Optical trapping supplies information on the structural, kinetic or rheological properties of inner constituents of the cell. However, the application of significant forces to intracellular objects is notoriously difficult due to a combination of factors, such as the small difference between the refractive indices of the target structures and the cytoplasm. Here we discuss the possibility of artificially inducing the formation of spherical organelles in the endoplasmic reticulum, which would contain densely packed engineered proteins, to be used as optimized targets for optical trapping experiments. The high index of refraction and large size of our organelles provide a firm grip for optical trapping and thereby allow us to exert large forces easily within safe irradiation limits. This has clear advantages over alternative probes, such as subcellular organelles or internalized synthetic beads.
Processament òptic de dades
Cèl·lules
Interacció cel·lular
Optical data processing
Cells
Cell interaction
(c) Optical Society of America, 2014
Article
info:eu-repo/semantics/publishedVersion
Optical Society of America
         

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