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Skrzypczak N, Buczkowski A, Bohusz W, Nowak E, Tokarska K, Leśniewska A, Alzebari AM, Ruszkowski P, Gdaniec M, Bartl F, Przybylski P. Modifications of geldanamycin via CuAAC altering affinity to chaperone protein Hsp90 and cytotoxicity. Eur J Med Chem 2023; 256:115450. [PMID: 37210951 DOI: 10.1016/j.ejmech.2023.115450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 04/24/2023] [Accepted: 05/03/2023] [Indexed: 05/23/2023]
Abstract
Functionalization of alkyne (1) and azide (2) derivatives of geldanamycin (GDM) via dipolar cycloaddition CuAAC yielded 35 new congeners (3-37) with C(17)-triazole arms bearing caps of different nature (basic vs. acidic, hydrophilic vs. hydrophobic). Confrontation of biological data (anticancer activity vs. toxicity in normal cells) with lipophilicity (clogP), dissociation constants (Kd) of complexes with Hsp90 and binding modes to Hsp90 revealed SAR in specific subgroups of GDM derivatives. The most potent GDM congeners 14-16, bearing C(17)-triazole-benzyl-halogen arms exhibited the most optimal clogP values of 2.7-3.1 at favourable binding to Hsp90 (KdHsp90 at μM level). The anticancer activity of 14-16 (IC50 = 0.23-0.41 μM) is higher than those of GDM (IC50 = 0.58-0.64 μM) and actinomycin D (ActD, IC50 = 0.62-0.71 μM) in SKBR-3, SKOV-3 and PC-3 cell lines, with a comparable cytotoxicity in healthy cells. The relationship between structure and attractive anticancer potency (IC50 = 0.53-0.74 μM) is also observed for congeners with C(17)-triazole-saccharide or C(17)-triazole-unsaturated arms. In the former, the absolute configuration at C(4) (ᴅ-glucose vs. ᴅ-galactose) whereas in the latter the length of the unsaturated arm influences the cytotoxic effects due to different binding strength (Kd, ΔE) and modes with Hsp90. Among all triazole congeners of GDM that are biologically attractive and exhibit lower toxicity in normal cells than GDM and ActD, the derivative 22, bearing the C(17)-triazole-cinnamyl arm, shows the lowest Kd (Hsp90), optimal clogP = 2.82, the best pro-apoptotic properties in SKBR-3 and SKOV-3 and the best selectivity indices (SI). For the most potent GDM derivatives with C(17)-triazole arm, the docking studies have suggested the importance of the intermolecular stabilization between the arm and the D57 or Y61 of Hsp90.
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Affiliation(s)
- Natalia Skrzypczak
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614, Poznań, Poland
| | - Adam Buczkowski
- Unit of Biophysical Chemistry, Department of Physical Chemistry, Faculty of Chemistry, University of Lodz, Pomorska 165, Lodz, 90-236, Poland
| | - Wiktor Bohusz
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614, Poznań, Poland
| | - Ewelina Nowak
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614, Poznań, Poland
| | - Klaudia Tokarska
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614, Poznań, Poland
| | - Aleksandra Leśniewska
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614, Poznań, Poland
| | - Attaa Mohammed Alzebari
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614, Poznań, Poland
| | - Piotr Ruszkowski
- Department of Pharmacology, Poznan University of Medical Sciences, Rokietnicka 5a, 60-806, Poznań, Poland
| | - Maria Gdaniec
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614, Poznań, Poland
| | - Franz Bartl
- Lebenswissenschaftliche Fakultӓt, Institut fȕr Biologie, Biophysikalische Chemie Humboldt-Universitӓt zu Berlin, Invalidenstraße 42, Berlin, Germany
| | - Piotr Przybylski
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614, Poznań, Poland.
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Skrzypczak N, Przybylski P. Structural diversity and biological relevance of benzenoid and atypical ansamycins and their congeners. Nat Prod Rep 2022; 39:1678-1704. [PMID: 35262153 DOI: 10.1039/d2np00004k] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Covering: 2011 to 2021The structural division of ansamycins, including those of atypical cores and different lengths of the ansa chains, is presented. Recently discovered benzenoid and atypical ansamycin scaffolds are presented in relation to their natural source and biosynthetic routes realized in bacteria as well as their muta and semisynthetic modifications influencing biological properties. To better understand the structure-activity relationships among benzenoid ansamycins structural aspects together with mechanisms of action regarding different targets in cells, are discussed. The most promising directions for structural optimizations of benzenoid ansamycins, characterized by predominant anticancer properties, were discussed in view of their potential medical and pharmaceutical applications. The bibliography of the review covers mainly years from 2011 to 2021.
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Affiliation(s)
- Natalia Skrzypczak
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznanskiego 8, 61-614 Poznan, Poland.
| | - Piotr Przybylski
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznanskiego 8, 61-614 Poznan, Poland.
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Minari K, de Azevedo ÉC, Kiraly VTR, Batista FAH, de Moraes FR, de Melo FA, Nascimento AS, Gava LM, Ramos CHI, Borges JC. Thermodynamic analysis of interactions of the Hsp90 with adenosine nucleotides: A comparative perspective. Int J Biol Macromol 2019; 130:125-138. [PMID: 30797004 DOI: 10.1016/j.ijbiomac.2019.02.116] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 02/20/2019] [Accepted: 02/20/2019] [Indexed: 10/27/2022]
Abstract
Hsp90s are key proteins in cellular homeostasis since they interact with many client proteins. Several studies indicated that Hsp90s are potential targets for treating diseases, such as cancer or malaria. It has been shown that Hsp90s from different organisms have peculiarities despite their high sequence identity. Therefore, a detailed comparative analysis of several Hsp90 proteins is relevant to the overall understanding of their activity. Accordingly, the goal of this work was to evaluate the interaction of either ADP or ATP with recombinant Hsp90s from different organisms (human α and β isoforms, Plasmodium falciparum, Leishmania braziliensis, yeast and sugarcane) by isothermal titration calorimetry. The measured thermodynamic signatures of those interactions indicated that despite the high identity among all Hsp90s, they have specific thermodynamic characteristics. Specifically, the interactions with ADP are driven by enthalpy but are opposed by entropy, whereas the interaction with ATP is driven by both enthalpy and entropy. Complimentary structural and molecular dynamics studies suggested that specific interactions with ADP that differ from those with ATP may contribute to the observed enthalpies and entropies. Altogether, the data suggest that selective inhibition may be more easily achieved using analogues of the Hsp90-ADP bound state than those of Hsp90-ATP bound state.
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Affiliation(s)
- Karine Minari
- São Carlos Institute of Chemistry, University of São Paulo, São Carlos, SP 13566-590, Brazil; Center of Biological and Health Sciences, Federal University of São Carlos, São Carlos, SP 13560-970, Brazil
| | - Érika Chang de Azevedo
- São Carlos Institute of Physics, University of São Paulo, São Carlos, SP 13560-970, Brazil
| | | | | | - Fábio Rogério de Moraes
- Biosciences, Languages, and Exact Sciences Institute, Multiuser Center for Biological Innovation (CMIB), São Paulo State University, São José do Rio Preto, SP 15054-000, Brazil
| | - Fernando Alves de Melo
- Biosciences, Languages, and Exact Sciences Institute, Multiuser Center for Biological Innovation (CMIB), São Paulo State University, São José do Rio Preto, SP 15054-000, Brazil
| | | | - Lisandra Marques Gava
- Center of Biological and Health Sciences, Federal University of São Carlos, São Carlos, SP 13560-970, Brazil
| | | | - Júlio César Borges
- São Carlos Institute of Chemistry, University of São Paulo, São Carlos, SP 13566-590, Brazil.
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