In April-May 2024, two young employees of the Institute, Tuleyeva Rysgul and Gizatullina Nargiza, completed a two-month internship at the Laboratory of Colloidal and Polymer Chemistry at the University of Helsinki. Their work was conducted under the guidance of Associate Professor Vladimir Olegovich Aseev. During their internship, they focused on the modification of natural polysaccharides, specifically gellan and chitosan, to create polyampholytes. These polyampholytes were designed to stabilize gold nanoparticles for use in the photothermal therapy of cancer cells. The modification products of gellan and chitosan were thoroughly analyzed using dynamic laser light scattering, proton NMR spectroscopy, and transmission electron microscopy.