Molecular interaction of silicon quantum dot micelles with plasma proteins: hemoglobin and thrombin |
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| Authors: | Shanmugavel Chinnathambi Subramani Karthikeyan Nobutaka Hanagata Naoto Shirahata |
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| Institution: | International Center for Young Scientists, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba Ibaraki 305-0047 Japan.; Department of Organic Chemistry, Peoples'' Friendship University of Russia (RUDN University), MikluhoMaklaya St., 6, Moscow 117198 Russia ; International Center for Materials Nanoarchitectonics (WPI-MANA), NIMS, 1-1 Namiki, Tsukuba 305-0044 Japan ; Nanotechnology Innovation Station, NIMS, 1-2-1 Sengen, Tsukuba Ibaraki 305-0047 Japan, |
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| Abstract: | Protein conformational changes are associated with potential cytotoxicity upon interaction with small molecules or nanomaterials. Protein misfolding leads to protein-mediated diseases; thus, it is important to study the conformational changes in proteins using nanoparticles as drug carriers. In this study, the conformational changes in hemoglobin and thrombin were observed using fluorescence spectroscopy, circular dichroism spectroscopy and molecular modelling studies after interaction with non-toxic, water-soluble near-infrared silicon quantum dot micelles. The molecular docking results indicated that the binding affinities of hemoglobin and thrombin with Si QD micelles are good. In addition, molecular dynamics simulations were performed to obtain more detailed information.Overall graphical representation of 1-decene, F-127, and crystal structures of hemoglobin and thrombin. |
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