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Agnes M, Kasimati EM, Inclán M, Thanassoulas A, Miliotis G, Malanga M, Benkovics G, Nounesis G, García-España E, Bouziotis P, Lazarou YG, Miriagou V, Mavridis IM, Yannakopoulou K. Metal-binding cyclodextrins: Synthesis and complexation with Zn 2+ and Ga 3+ cations towards antimicrobial applications. Carbohydr Polym 2023; 321:121323. [PMID: 37739545 DOI: 10.1016/j.carbpol.2023.121323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2023] [Revised: 08/02/2023] [Accepted: 08/21/2023] [Indexed: 09/24/2023]
Abstract
Highly resistant bacteria producing metallo-β-lactamases (MBLs) to evade β-lactam antibiotics, constitute a major cause of life-threatening infections world-wide. MBLs exert their hydrolytic action via Zn2+ cations in their active center. Presently, there are no approved drugs to target MBLs and combat the associated antimicrobial resistance (AMR). Towards this issue, we have prepared a family of cyclodextrins substituted with iminodiacetic acid (IDA) on their narrow side, while the wider side is either unmodified or per-2,3-O-methylated. The molecules form strong coordination complexes with Zn2+ or Ga3+ cations in aqueous solution. Free and metal-complexed compounds have been thoroughly characterized regarding structures, pH-dependent ionization states, distribution of species in solution, pKa values and metal-binding constants. At neutral pH the multi-anionic hosts bind up to four Zn2+ or Ga3+ cations. In vitro, 50 μΜ of the compounds achieve complete re-sensitization of MBL-producing Gram-negative clinical bacterial strains resistant to the carbapenems imipenem and meropenem. Moreover, the radioactive complex [67Ga]Ga-β-IDACYD prepared, displays high radiochemical purity, sufficient stability both overtime and in the presence of human plasma apo-transferrin, thus providing an invaluable tool for future biodistribution and pharmacokinetic studies of β-IDACYDin vivo, prerequisites for the development of therapeutic protocols.
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Affiliation(s)
- Marco Agnes
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research "Demokritos", Patr. Grigoriou E´ & 27 Neapoleos str., 15341, Aghia Paraskevi, Attiki, Greece.
| | - Eleni Marina Kasimati
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research "Demokritos", Patr. Grigoriou E´ & 27 Neapoleos str., 15341, Aghia Paraskevi, Attiki, Greece.
| | - Mario Inclán
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research "Demokritos", Patr. Grigoriou E´ & 27 Neapoleos str., 15341, Aghia Paraskevi, Attiki, Greece; Institute of Molecular Science, Faculty of Chemistry, University of València, Catedrático José Beltrán 2, 46980 Paterna, Spain.
| | - Angelos Thanassoulas
- Institute of Nuclear and Radiological Sciences and Technology, Energy and Safety, National Center for Scientific Research "Demokritos", Patr. Grigoriou E´ & 27 Neapoleos str., 15341 Aghia Paraskevi, Attiki, Greece.
| | - Georgios Miliotis
- Laboratory of Bacteriology, Hellenic Pasteur Institute, Vas. Sophias 127, Athens 11521, Greece.
| | - Milo Malanga
- CycloLab SA, Cyclodextrin R&D Ltd, H-1097 Illatos út 7, Budapest, Hungary
| | - Gabor Benkovics
- CycloLab SA, Cyclodextrin R&D Ltd, H-1097 Illatos út 7, Budapest, Hungary
| | - George Nounesis
- Institute of Nuclear and Radiological Sciences and Technology, Energy and Safety, National Center for Scientific Research "Demokritos", Patr. Grigoriou E´ & 27 Neapoleos str., 15341 Aghia Paraskevi, Attiki, Greece.
| | - Enrique García-España
- Institute of Molecular Science, Faculty of Chemistry, University of València, Catedrático José Beltrán 2, 46980 Paterna, Spain.
| | - Penelope Bouziotis
- Institute of Nuclear and Radiological Sciences and Technology, Energy and Safety, National Center for Scientific Research "Demokritos", Patr. Grigoriou E´ & 27 Neapoleos str., 15341 Aghia Paraskevi, Attiki, Greece.
| | - Yannis G Lazarou
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research "Demokritos", Patr. Grigoriou E´ & 27 Neapoleos str., 15341, Aghia Paraskevi, Attiki, Greece.
| | - Vivi Miriagou
- Laboratory of Bacteriology, Hellenic Pasteur Institute, Vas. Sophias 127, Athens 11521, Greece.
| | - Irene M Mavridis
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research "Demokritos", Patr. Grigoriou E´ & 27 Neapoleos str., 15341, Aghia Paraskevi, Attiki, Greece.
| | - Konstantina Yannakopoulou
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research "Demokritos", Patr. Grigoriou E´ & 27 Neapoleos str., 15341, Aghia Paraskevi, Attiki, Greece.
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Martins AF, Prata MIM, Rodrigues SPJ, Geraldes CFGC, Riss PJ, Amor-Coarasa A, Burchardt C, Kroll C, Roesch F. Spectroscopic, radiochemical, and theoretical studies of the Ga3+-N-2-hydroxyethyl piperazine-N′-2-ethanesulfonic acid (HEPES buffer) system: evidence for the formation of Ga3+- HEPES complexes in68 Ga labeling reactions. CONTRAST MEDIA & MOLECULAR IMAGING 2013; 8:265-73. [DOI: 10.1002/cmmi.1517] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2012] [Revised: 08/20/2012] [Accepted: 10/15/2012] [Indexed: 12/29/2022]
Affiliation(s)
| | | | | | | | - P. J. Riss
- The Wolfson Brain Imaging Centre; University of Cambridge; Box 65 Addenbrooke's Hospital; Cambridge; CB2 0QQ; UK
| | | | - C. Burchardt
- Institute of Nuclear Chemistry; Johannes Gutenberg-University; Fritz-Strassmann-Weg 2; 55128; Mainz; Germany
| | - C. Kroll
- Institute of Nuclear Chemistry; Johannes Gutenberg-University; Fritz-Strassmann-Weg 2; 55128; Mainz; Germany
| | - F. Roesch
- Institute of Nuclear Chemistry; Johannes Gutenberg-University; Fritz-Strassmann-Weg 2; 55128; Mainz; Germany
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Achour B, Costa J, Delgado R, Garrigues E, Geraldes CFGC, Korber N, Nepveu F, Prata MI. Triethylenetetramine-N,N,N',N",N"',N"'-hexaacetic Acid (TTHA) and TTHA-Bis(butanamide) as Chelating Agents Relevant to Radiopharmaceutical Applications. Inorg Chem 1998; 37:2729-2740. [PMID: 11670409 DOI: 10.1021/ic970921j] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The N,N'-bis(butanamide) derivative of TTHA (TTHA = triethylenetetramine-N,N,N',N",N"',N"'-hexaacetic acid), and its Ga(3+) and In(3+) complexes were synthesized and characterized. The crystal X-ray diffraction structure of [Ga(2)(OH)(2)(TTHA)][Na(2)(H(2)O)(6)].2H(2)O was determined. The complex crystallizes in the monoclinic space group P2(1)/n with a = 7.179(2) Å, b = 20.334(3) Å, c = 10.902(5) Å, beta = 101.90(2) degrees, and Z = 2. Each gallium atom is bonded to six donor atoms (N(2)O(4)) in a slightly distorted octahedral geometry. The values of the protonation constants and the protonation sequence were determined by potentiometry and NMR. The stability constants of the Al(3+), Ga(3+), Fe(3+), and In(3+) complexes of TTHA-(BuA)(2) and of the Ga(3+) complex of TTHA were determined by potentiometry. The structures, in solution, of the Al(3+), Ga(3+), and In(3+) complexes of TTHA-(BuA)(2) and TTHA were analyzed by (1)H, (13)C, (27)Al, (71)Ga, and (115)In NMR techniques. Derivatization of two terminal carboxylates by butanamide substituents leads to a significant decrease of the total ligand basicity (5.77 log units) and to a change of the solubility of the resulting complexes. The stability constant of the ML complexes of TTHA-(BuA)(2) with Fe(3+) exhibits the highest value of the series (10(23.92)). The In(3+) complex is more stable than that of Ga(3+) and almost as stable as that of the Fe(3+). However, the decrease in indium and iron complex stability is less drastic going from TTHA to TTHA-(BuA)(2) (about 3 log units) than for Al(3+) or Ga(3+) (about 6 log units). pM values calculated under physiological conditions for DTPA, TTHA, and the bis(butanamide) derivatives have shown that while DTPA remains a ligand of choice to chelate Fe(3+) and In(3+) ions in vivo compared to transferrin as competitor ligand, TTHA, surprisingly, appears to be the best of these four ligands (pM = 22.71) to chelate Ga(3+).
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Affiliation(s)
- Benbrahim Achour
- Laboratoire de Synthèse, Physico-Chimie et Radiobiologie, Université Paul Sabatier, 31062 Toulouse Cedex 4, France, Instituto de Tecnologia Química e Biológica, R. da Quinta Grande, 6, 2780 Oeiras, Portugal, Faculdade de Farmácia de Lisboa, Av. das Forças Armadas, 1600 Lisboa, Portugal, Instituto Superior Técnico, DEQ, 1096 Lisboa Codex, Portugal, Departmento de Bioquímica e Centro de Neurociências, Universidade de Coimbra, Apartado 3126, 3000 Coimbra, Portugal, and Universität Bonn, Anorganische Chemie, Gerhard Domagk-Strasse 1, D-6000 Bonn, Germany
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Weiner RE, Cohen MS, Hoffer PB. Influence of various factors on binding of 67Ga to polymorphonuclear leukocytes. INTERNATIONAL JOURNAL OF RADIATION APPLICATIONS AND INSTRUMENTATION. PART B, NUCLEAR MEDICINE AND BIOLOGY 1987; 14:523-8. [PMID: 3478326 DOI: 10.1016/0883-2897(87)90121-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
We have studied in vitro, factors that influence the uptake of 67Ga-citrate by human polymorphonuclear leukocytes. Citrate at 20 mM concentration decreased the uptake to 1% of control values. Uptake increased as a function of increased microCi of 67Ga/10(7) cells added and incubation time from 0 to 120 min. Uptake decreased somewhat as the incubation pH was lowered from 7.4 to 6.0. Our results suggest that, in vivo, these cells would accumulate 67Ga as the inflammatory lesion progresses while the acidic milieu would modestly reduce uptake.
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Affiliation(s)
- R E Weiner
- Department of Diagnostic Radiology, University of Kansas College of Health Sciences and Hospital, Kansas City 66103
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Orii H, Nakamura K. The mechanism of adsorption of Ga-67 citrate to cultured cells. EUROPEAN JOURNAL OF NUCLEAR MEDICINE 1980; 5:155-8. [PMID: 7379818 DOI: 10.1007/bf00252477] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Gallium adsorption was investigated at various pH values, with and without chelating agents or buffers. Evidence was obtained that Ga-67 citrate was adsorbed to cells in a polymeric form at a certain pH. Adsorption of Ga-67 to cells and to a glass surface reached a maximum at pH 4.5. When Ga-67 solutions were centrifuged to separate the precipitate, the highest precipitated radioactivity was found at the stated pH. With the addition of chelating agents which interact strongly with gallium, the adsorption to either cells or a glass surface was stoichiometrically inhibited. No such inhibition occurred, however, when counter ions unbound to gallium were added. The amount of Ga-67 released from the cell depended on the pH, suggesting that most of the gallium is deposited on the cell surface. Our results support Glickson's conclusion that gallium citrate forms a polymer at a certain acidic pH, which results in an increased cellular uptake by unknown mechanisms, presumably by pynocytosis.
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