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Fluorescent Methods in Research of Eukaryotic Cells
Chmelíková, Larisa ; Babula, Petr (oponent) ; Pešl,, Martin (oponent) ; Provazník, Ivo (vedoucí práce)
This work examines the application of the fluorescent methods in use in in vitro studies to the field of cardiac tissue regeneration. Confocal fluorescence microscopy is an appropriate microscopic technique for studies in this field because it enables the visualisation of 3D structures and cell distribution in 3D models. The applied fluorescent markers should remain stable for a long period, are biocompatible, and are non-toxic for living cells. Nanoparticles such as superparamagnetic iron oxide nanoparticles (SPION) are currently very popular, and many studies have shown that they are suitable for long-term experiments. This research makes use of rhodamine-derived superparamagnetic maghemite nanoparticles (SAMN-R) and describes their excitation and emission spectra, size, and location within cells. A toxicity assay was performed by measuring reactive oxygen species (ROS) and non-quantitative measurements were conducted using fluorescence microscopy, confirming that a dose value of 20 µg·cm-2 is optimal for the treatment of living cells. This research also looks at the effects of SAMN-R treatment on cell proliferation and motility. The 3T3 fibroblast cell line was used for the cell proliferation test and scratch assay, after which human adipose-derived mesenchymal stem cells (MSCs) were used to examine single-cell migration. The subsequent statistical analysis revealed that it cannot be confirmed that the SAMN-R treatment exerts a significant effect on either cell proliferation or collective and single-cell migration, and it can be assumed that SAMN-R are appropriate fluorescent cell markers for living cells research, including the field of regeneration studies. Adipose-derived MSCs have enormous potential for cardiac tissue regeneration. Their interactions with HL-1 cardiac muscle cell line were studied using the scratch assay, and this model seems to be a promising and useful way to study cell-to-cell contact and its role in cell repairing.
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Fluorescent Methods in Research of Eukaryotic Cells
Chmelíková, Larisa ; Babula, Petr (oponent) ; Pešl,, Martin (oponent) ; Provazník, Ivo (vedoucí práce)
This work examines the application of the fluorescent methods in use in in vitro studies to the field of cardiac tissue regeneration. Confocal fluorescence microscopy is an appropriate microscopic technique for studies in this field because it enables the visualisation of 3D structures and cell distribution in 3D models. The applied fluorescent markers should remain stable for a long period, are biocompatible, and are non-toxic for living cells. Nanoparticles such as superparamagnetic iron oxide nanoparticles (SPION) are currently very popular, and many studies have shown that they are suitable for long-term experiments. This research makes use of rhodamine-derived superparamagnetic maghemite nanoparticles (SAMN-R) and describes their excitation and emission spectra, size, and location within cells. A toxicity assay was performed by measuring reactive oxygen species (ROS) and non-quantitative measurements were conducted using fluorescence microscopy, confirming that a dose value of 20 µg·cm-2 is optimal for the treatment of living cells. This research also looks at the effects of SAMN-R treatment on cell proliferation and motility. The 3T3 fibroblast cell line was used for the cell proliferation test and scratch assay, after which human adipose-derived mesenchymal stem cells (MSCs) were used to examine single-cell migration. The subsequent statistical analysis revealed that it cannot be confirmed that the SAMN-R treatment exerts a significant effect on either cell proliferation or collective and single-cell migration, and it can be assumed that SAMN-R are appropriate fluorescent cell markers for living cells research, including the field of regeneration studies. Adipose-derived MSCs have enormous potential for cardiac tissue regeneration. Their interactions with HL-1 cardiac muscle cell line were studied using the scratch assay, and this model seems to be a promising and useful way to study cell-to-cell contact and its role in cell repairing.
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