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Sulik M, Kubis Z, Kłopotowska D, Janczak J, Wietrzyk J, Huczyński A. Synthesis, X-ray studies and antiproliferative activity of novel lasalocid amides. Bioorg Med Chem Lett 2025; 116:130041. [PMID: 39603480 DOI: 10.1016/j.bmcl.2024.130041] [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: 07/22/2024] [Revised: 10/28/2024] [Accepted: 11/24/2024] [Indexed: 11/29/2024]
Abstract
Seeking new drug candidates among compounds of natural origin is an effective and widely used method of fighting various diseases, especially cancer. Lasalocid acid is one of the naturally occurring polyether ionophore antibiotics, which also exhibits interesting anticancer activity. Therefore, to expand the knowledge about the anticancer properties of lasalocid derivatives, a series of its new amides were synthesized and their antiproliferative activity against cancer cell lines was studied. Amides 7-9 with an aromatic substituent, displayed potent antiproliferative activity (IC50: 0.84-5.18 μM) and demonstrated a good selectivity index (SI: 1.4-15.3). Furthermore, almost all of lasalocid amides overcame the drug resistance of the doxorubicin-resistant cancer cell line (LoVo/DX). Because the biological activity of ionophores is strictly connected with their ability to transport the Na+ cation through lipid bilayers, the crystal structure of the complex of compound 8 with the Na+ cation was resolved. Lasalocid amides exhibit a pseudocyclic structure and are able to coordinate the Na+ cation.
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Affiliation(s)
- Michał Sulik
- Department of Medical Chemistry, Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland
| | - Zbigniew Kubis
- Department of Medical Chemistry, Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland
| | - Dagmara Kłopotowska
- Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Rudolfa Weigla 12, 53-114 Wrocław, Poland
| | - Jan Janczak
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okólna 2, Wrocław 50-422, Poland
| | - Joanna Wietrzyk
- Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Rudolfa Weigla 12, 53-114 Wrocław, Poland
| | - Adam Huczyński
- Department of Medical Chemistry, Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland.
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Rutkowski J, Huczyński A, Ratajczak-Sitarz M, Katrusiak A, Brzezinski B, Bartl F. Spectroscopic studies of the equilibrium between complexes of lasalocid acid with propargylamine and metal cations. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 150:704-711. [PMID: 26093967 DOI: 10.1016/j.saa.2015.05.099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Accepted: 05/27/2015] [Indexed: 06/04/2023]
Abstract
The molecular structure of 1:1 complex formed between the naturally occurring polyether ionophore, called lasalocid acid (LAS) and propargylamine (PROP) is studied by X-ray, FT-IR, (1)H NMR, (13)C NMR and ESI-MS methods. The complex formed between deprotonated LAS acid and protonated PROP molecule is stabilized by intra- and inter-molecular hydrogen bonds. The protons of the protonated amine group are hydrogen bonded to etheric and hydroxyl oxygen atoms of the LAS anion. The similarity of the FT-IR spectra of the LAS-PROP complex in solid state and in solution demonstrated that the molecular structures of the complex in both states are comparable. It is shown that LAS in solution can form concurrent complexes with metal cations (M=Li(+), Na(+), K(+)) and amine existing in equilibrium. Analysis of the structures of lasalocid complexes is important for a better understanding of the antibacterial and anticancer properties of lasalocid acid.
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Affiliation(s)
- Jacek Rutkowski
- Faculty of Chemistry, Adam Mickiewicz University, Grunwaldzka 6, 60-780 Poznań, Poland.
| | - Adam Huczyński
- Faculty of Chemistry, Adam Mickiewicz University, Grunwaldzka 6, 60-780 Poznań, Poland
| | | | - Andrzej Katrusiak
- Faculty of Chemistry, Adam Mickiewicz University, Grunwaldzka 6, 60-780 Poznań, Poland
| | - Bogumil Brzezinski
- Faculty of Chemistry, Adam Mickiewicz University, Grunwaldzka 6, 60-780 Poznań, Poland
| | - Franz Bartl
- Institute of Medical Physics and Biophysics, Charité, Universitätsmedizin Berlin, Charitéplatz 1, 10117 Berlin, Germany
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Huczyński A, Janczak J, Rutkowski J, Brzezinski B. Spectroscopic, crystallographic and theoretical studies of lasalocid complex with ammonia and benzylamine. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 125:297-307. [PMID: 24562161 DOI: 10.1016/j.saa.2014.01.083] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Revised: 01/08/2014] [Accepted: 01/16/2014] [Indexed: 06/03/2023]
Abstract
A natural antibiotic--Lasalocid is able to form stable complexes with ammonia and organic amines. New complexes of lasalocid with benzylamine and ammonia were obtained in the crystal forms and studied using X-ray, FT-IR, (1)H NMR, (13)C NMR and DFT methods. These studies have shown that in both complexes the proton is transferred from the carboxylic group to the amine group with the formation of a pseudo-cyclic structure of lasalocid anion complexing the protonated amine or NH4(+) cation. The spectroscopic and DFT studies demonstrated that the structure of the complex formed between Lasalocid and benzylamine in the solid is also conserved in the solution and gas phase. In contrast, the structure of the complex formed between lasalocid and ammonium cation found in the solid state undergoes dissociation in chloroform solution accompanied with a change in the coordination form of the NH4(+) cation.
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Affiliation(s)
- Adam Huczyński
- Faculty of Chemistry, Adam Mickiewicz University, Grunwaldzka 6, 60-780 Poznań, Poland.
| | - Jan Janczak
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, PO Box 1410, 50950 Wrocław, Poland
| | - Jacek Rutkowski
- Faculty of Chemistry, Adam Mickiewicz University, Grunwaldzka 6, 60-780 Poznań, Poland
| | - Bogumil Brzezinski
- Faculty of Chemistry, Adam Mickiewicz University, Grunwaldzka 6, 60-780 Poznań, Poland
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Rutkowski J, Brzezinski B. Structures and properties of naturally occurring polyether antibiotics. BIOMED RESEARCH INTERNATIONAL 2013; 2013:162513. [PMID: 23586016 PMCID: PMC3613094 DOI: 10.1155/2013/162513] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/29/2012] [Revised: 12/12/2012] [Accepted: 01/04/2013] [Indexed: 11/29/2022]
Abstract
Polyether ionophores represent a large group of natural, biologically active substances produced by Streptomyces spp. They are lipid soluble and able to transport metal cations across cell membranes. Several of polyether ionophores are widely used as growth promoters in veterinary. Polyether antibiotics show a broad spectrum of bioactivity ranging from antibacterial, antifungal, antiparasitic, antiviral, and tumour cell cytotoxicity. Recently, it has been shown that some of these compounds are able to selectively kill cancer stem cells and multidrug-resistant cancer cells. Thus, they are recognized as new potential anticancer drugs. The biological activity of polyether ionophores is strictly connected with their molecular structure; therefore, the purpose of this paper is to present an overview of their formula, molecular structure, and properties.
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Affiliation(s)
- Jacek Rutkowski
- Department of Biochemistry, Faculty of Chemistry, Adam Mickiewicz University, Grunwaldzka 6, 60-780 Poznań, Poland.
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Huczyński A, Rutkowski J, Wietrzyk J, Stefańska J, Maj E, Ratajczak-Sitarz M, Katrusiak A, Brzezinski B, Bartl F. X-ray crystallographic, FT-IR and NMR studies as well as anticancer and antibacterial activity of the salt formed between ionophore antibiotic Lasalocid acid and amines. J Mol Struct 2013. [DOI: 10.1016/j.molstruc.2012.07.036] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Huczyński A, Ratajczak-Sitarz M, Katrusiak A, Brzezinski B. X-ray, spectroscopic and semiempirical investigation of the structure of lasalocid 6-bromohexyl ester and its complexes with alkali metal cations. J Mol Struct 2011. [DOI: 10.1016/j.molstruc.2011.05.034] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Huczyński A, Rutkowski J, Brzezinski B. Complexes of lasalocid 2-naphthylmethyl ester with monovalent metal cations studied by mass spectrometry, spectroscopic and semiempirical methods. Struct Chem 2011. [DOI: 10.1007/s11224-011-9739-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Huczyński A, Janczak J, Stefańska J, Rutkowski J, Brzezinski B. X-ray, spectroscopic and antibacterial activity studies of the 1:1 complex of lasalocid acid with 1,1,3,3-tetramethylguanidine. J Mol Struct 2010. [DOI: 10.1016/j.molstruc.2010.05.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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