TY - JOUR

T1 - Association of Keplerate-Type Polyoxometalate {Mo72Fe30} with Tetracycline: Nature of Binding Sites and Antimicrobial Action

AU - Grzhegorzhevskii, Kirill

AU - Tonkushina, Margarita

AU - Gushchin, Pavel

AU - Gagarin, Ilya

AU - Ermoshin, Alexander

AU - Belova, Kseniya

AU - Prokofyeva, Anna

AU - Ostroushko, Alexander

AU - Novikov, Alexander

N1 - Grzhegorzhevskii, K.; Tonkushina, M.; Gushchin, P.; Gagarin, I.; Ermoshin, A.; Belova, K.; Prokofyeva, A.; Ostroushko, A.; Novikov, A. Association of Keplerate-Type Polyoxometalate {Mo72Fe30} with Tetracycline: Nature of Binding Sites and Antimicrobial Action. Inorganics 2023, 11, 9. https://doi.org/10.3390/inorganics11010009

PY - 2023

Y1 - 2023

N2 - The association process between the tetracycline (TC) antibiotic molecule and Keplerate-type nanocluster polyoxometalate (POM) {Mo72Fe30} was studied in aqueous solution. The novel supramolecular ensemble {Mo72Fe30}@TC12.5 was produced, its composition and structure were revealed by means of elemental analysis (C, N, H) and vibrational spectroscopy (IR and Raman). Based on the spectral data, the POM structure’s integrity was confirmed and binding sites of TC with the Keplerate {Mo72Fe30} surface were found. Due to thermogravimetric analysis (TG) and in-situ Raman spectroscopy during the process of {Mo72Fe30}@TC12.5 thermal destruction, we showed a significant change in the phase composition of POM’s destruction products after association with TC. The antibacterial activity of the obtained complex {Mo72Fe30}@TC12.5 was examined. The experimental results allowed us to note the partial inhibition of TC’s antibacterial activity owing to the coordination of TC to FeIII centers, in turn, which hinders the participation of TC in coordination via Mg2+ of ribosomal subunits 30S in bacteria.

AB - The association process between the tetracycline (TC) antibiotic molecule and Keplerate-type nanocluster polyoxometalate (POM) {Mo72Fe30} was studied in aqueous solution. The novel supramolecular ensemble {Mo72Fe30}@TC12.5 was produced, its composition and structure were revealed by means of elemental analysis (C, N, H) and vibrational spectroscopy (IR and Raman). Based on the spectral data, the POM structure’s integrity was confirmed and binding sites of TC with the Keplerate {Mo72Fe30} surface were found. Due to thermogravimetric analysis (TG) and in-situ Raman spectroscopy during the process of {Mo72Fe30}@TC12.5 thermal destruction, we showed a significant change in the phase composition of POM’s destruction products after association with TC. The antibacterial activity of the obtained complex {Mo72Fe30}@TC12.5 was examined. The experimental results allowed us to note the partial inhibition of TC’s antibacterial activity owing to the coordination of TC to FeIII centers, in turn, which hinders the participation of TC in coordination via Mg2+ of ribosomal subunits 30S in bacteria.

KW - polyoxometalate

KW - Tetracycline

KW - Keplerate

KW - vibrational spectroscopy;

KW - antibiotic action

KW - vibrational spectroscopy

KW - tetracycline

UR - https://www.mendeley.com/catalogue/86811081-ebd3-3b9f-8a34-537e0aad8ef9/

U2 - 10.3390/inorganics11010009

DO - 10.3390/inorganics11010009

M3 - Article

VL - 11

SP - 9

JO - Inorganics

JF - Inorganics

SN - 2304-6740

IS - 1

ER -