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Pozdina, V.

Publications and source records attributed to Pozdina, V..

2 recordsLinked to original sources

Magnetically controlled tension of cytoskeletal elements with magnetic nanoparticles affects the expression of signaling pathway genes associated with cytoskeletal elements

Interactions with the extracellular environment and biological responses are based on biochemical pathways. Cytoskeletal reorganization is a dynamic process accompanied by filament polymerization and depolymerization, that allows the cell to effectively perceive and respond to external mechanical stimuli by altering their biomechanical properties. The contribution of mechanical deformations of individual cytoskeletal elements to changes in intracellular signaling has not been covered in the existing literature. In our article, we investigated changes in gene expression after regulated cytoskeletal deformation using a constant magnetic field and magnetic nanoparticles associated with antibodies to cytoskeletal proteins (vimentin, beta-actin and acetylated tubulin). For the first time, we have identified and described the biological pathways involved in the regulation of mechanical deformations of cytoskeletal elements.

bioinformatics↗

MSLASpheroidStamp: 3d cell spheroids for everyone

3D cell cultures, such as cell spheroids, are actively used in biology for modeling biological processes, studying intercellular interactions and pharmacological compounds screening and are becoming indispensable objects in cell culture laboratories. There are many methods for producing spheroids, varying in cost and convenience. One of the most handy and affordable is the use of agarose microwells. We have developed approaches to fabricate agarose microwells in standard culture plastic with the assistance of a hobby-grade MSLA 3D printer. The use of 3D printing allows you to customize microwells in a wide range of shapes and sizes and scale the production process from a few spheroids to tens of thousands. We have shown that it is possible to create gel microwells in a dish with a glass bottom, which allows us to easily realize time-lapse confocal microscopy of spheroids, and we have also performed in situ optical clearing in the same dishes to study the spheroid structure. We demonstrated the ability to study the cytotoxicity of various substances and nanoparticles in commonly used 96-well plates. And finally, in this article we describe the difficulties and limitations of our approach and suggest ways for solving them, allowing the reader not only to reproduce it, but also to adapt it to the specific needs of a certain laboratory, using provided 3D models and instructions.

cell biology↗