10 research outputs found
Normal epithelial and triple-negative breast cancer cells show the same invasion potential in rigid spatial confinement
The extra-cellular microenvironment has a fundamental role in tumor growth and progression,
strongly affecting the migration strategies adopted by single cancer cells during metastatic invasion. In
this study, we use a novel microfluidic device to investigate the ability of mesenchymal and epithelial
breast tumor cells to fluidize and migrate through narrowing microstructures upon chemoattractant
stimulation. We compare the migration behavior of two mesenchymal breast cancer cell lines and one
epithelial cell line, and find that the epithelial cells are able to migrate through the narrowest
microconstrictions as the more invasive mesenchymal cells. In addition, we demonstrate that
migration of epithelial cells through a highly compressive environment can occur in absence of a
chemoattractive stimulus, thus evidencing that they are just as prone to react to mechanical cues as
invasive cell
Chiral Optical Response of Stereoregular Crystalline Polymers and of their Achiral Guests
Chiral Optical Response of Achiral and Enantiomeric Guests in Syndiotactic Polystyrene Films
Melt-Extruded Films of a Commercial Polymer with Intense Chiral Optical Response of Achiral Guests
Strategies to control linear anisotropy and chirality in polymeric materials:from the basic issues to the micro-devices developments
School of Science and Technique "Bernardino Telesio", Science e Technology of Mesophases and Molecular Materials, Ciclo XXVI, a.a. 2013The development of devices with increasing levels of functionality represents an important
technological issue. To this aim, innovative materials with tunable functionalities play a
crucial role. The challenge is to obtain multifunctional materials through simple procedures
with high performance and low cost, and eventually external control parameters. Moreover
the understanding of multifunctionality of materials is hence an exciting scientific
opportunity. For these purpose, the main objectives of the present work have been to
explore two main strategies.
In the first one, azobenzene based materials and their light induced functionalities
has been exploited to develop microdevices for polarimetric applications. Already know
effects of linear and circular photoinduced optical anisotropies in azobenzene based
polymers was investigated coupling the materials properties with holographic techniques, both to characterize the photoinduced properties of the materials and to develop diffractive
devices useful for the above cited applications.
The second topic is addressed towards the development of a materials science
approach to build up polymeric matrices with controllable supramolecular chiral structures
and subnanometric cavities. Both explored features are connected to intriguing topics as
chirality and small size cavities. Their chirooptical properties and supramolecular structures
suggest high potentiality for development of chiral sensors or filtration devices.
Key words: micro-devices, azo-polymers, polarization holography, syndiotactic
polystyrene, supramolecular chirality.Università della Calabri
Normal epithelial and triple-negative breast cancer cells show the same invasion potential in rigid spatial confinement
The extra-cellular microenvironment has a fundamental role in tumor growth and progression,
strongly affecting the migration strategies adopted by single cancer cells during metastatic invasion. In
this study, we use a novel microfluidic device to investigate the ability of mesenchymal and epithelial
breast tumor cells to fluidize and migrate through narrowing microstructures upon chemoattractant
stimulation. We compare the migration behavior of two mesenchymal breast cancer cell lines and one
epithelial cell line, and find that the epithelial cells are able to migrate through the narrowest
microconstrictions as the more invasive mesenchymal cells. In addition, we demonstrate that
migration of epithelial cells through a highly compressive environment can occur in absence of a
chemoattractive stimulus, thus evidencing that they are just as prone to react to mechanical cues as
invasive cell
Normal epithelial and triple-negative breast cancer cells show the same invasion potential in rigid spatial confinement
The extra-cellular microenvironment has a fundamental role in tumor growth and progression,
strongly affecting the migration strategies adopted by single cancer cells during metastatic invasion. In
this study, we use a novel microfluidic device to investigate the ability of mesenchymal and epithelial
breast tumor cells to fluidize and migrate through narrowing microstructures upon chemoattractant
stimulation. We compare the migration behavior of two mesenchymal breast cancer cell lines and one
epithelial cell line, and find that the epithelial cells are able to migrate through the narrowest
microconstrictions as the more invasive mesenchymal cells. In addition, we demonstrate that
migration of epithelial cells through a highly compressive environment can occur in absence of a
chemoattractive stimulus, thus evidencing that they are just as prone to react to mechanical cues as
invasive cell