1
|
Jiménez-Pérez A, Fernández-Fariña S, Pedrido R, García-Tojal J. Desulfurization of thiosemicarbazones: the role of metal ions and biological implications. J Biol Inorg Chem 2024; 29:3-31. [PMID: 38148423 DOI: 10.1007/s00775-023-02037-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 09/26/2023] [Indexed: 12/28/2023]
Abstract
Thiosemicarbazones are biologically active substances whose structural formula is formed by an azomethine, an hydrazine, and a thioamide fragments, to generate a R2C=N-NR-C(=S)-NR2 backbone. These compounds often act as ligands to generate highly stable metal-organic complexes. In certain experimental conditions, however, thiosemicarbazones undergo reactions leading to the cleavage of the chain. Sometimes, the breakage involves desulfurization processes. The present work summarizes the different chemical factors that influence the desulfurization reactions of thiosemicarbazones, such as pH, the presence of oxidant reactants or the establishment of redox processes as those electrochemically induced, the effects of the solvent, the temperature, and the electromagnetic radiation. Many of these reactions require coordination of thiosemicarbazones to metal ions, even those present in the intracellular environment. The nature of the products generated in these reactions, their detection in vivo and in vitro, together with the relevance for the biological activity of these compounds, mainly as antineoplastic agents, is discussed.
Collapse
Affiliation(s)
- Alondra Jiménez-Pérez
- Departamento de Química, Facultad de Ciencias, Universidad de Burgos, 09001, Burgos, Spain
| | - Sandra Fernández-Fariña
- Departamento de Química Inorgánica, Facultade de Química, Campus Vida, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Rosa Pedrido
- Departamento de Química Inorgánica, Facultade de Química, Campus Vida, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain.
| | - Javier García-Tojal
- Departamento de Química, Facultad de Ciencias, Universidad de Burgos, 09001, Burgos, Spain.
| |
Collapse
|
2
|
Sardaru MC, Morariu S, Carp OE, Ursu EL, Rotaru A, Barboiu M. Dynameric G-quadruplex-dextran hydrogels for cell growth applications. Chem Commun (Camb) 2023; 59:3134-3137. [PMID: 36810644 DOI: 10.1039/d2cc06881h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
Hybrid dextran-G-quartet produces tunable biocompatible three-dimensional thixotropic hydrogels, able to support cell growth.
Collapse
Affiliation(s)
- Monica-Cornelia Sardaru
- "Petru Poni" Institute of Macromolecular Chemistry, Romanian Academy, Centre of Advanced Research in Bionanoconjugates and Biopolymers, Grigore Ghica Voda Alley 41 A, 700487, Iasi, Romania.
| | - Simona Morariu
- "Petru Poni" Institute of Macromolecular Chemistry, Romanian Academy, Natural Polymers, Bioactive and Biocompatible Materials, Grigore Ghica Voda Alley 41 A, 700487, Iasi, Romania
| | - Oana-Elena Carp
- "Petru Poni" Institute of Macromolecular Chemistry, Romanian Academy, Centre of Advanced Research in Bionanoconjugates and Biopolymers, Grigore Ghica Voda Alley 41 A, 700487, Iasi, Romania.
| | - Elena-Laura Ursu
- "Petru Poni" Institute of Macromolecular Chemistry, Romanian Academy, Centre of Advanced Research in Bionanoconjugates and Biopolymers, Grigore Ghica Voda Alley 41 A, 700487, Iasi, Romania.
| | - Alexandru Rotaru
- "Petru Poni" Institute of Macromolecular Chemistry, Romanian Academy, Centre of Advanced Research in Bionanoconjugates and Biopolymers, Grigore Ghica Voda Alley 41 A, 700487, Iasi, Romania.
| | - Mihail Barboiu
- Institut Europeen Membranes, Adaptive Supramolecular Nanosystems Group, Université de Montpellier, ENSCM, CNRS, Pl Eugene Bataillon, CC47, F-34095, Montpellier 5, France.
| |
Collapse
|
3
|
He Y, Liu M, Teng S, Wojtas L, Gu G, Shi X. Synthesis and Characterization of Fluorescence Active G 4-Quartet and Direct Evaluation of Self-Assembly Impact on Emission. CHINESE CHEM LETT 2022; 33:4203-4207. [PMID: 38107831 PMCID: PMC10723654 DOI: 10.1016/j.cclet.2022.03.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Fluorescence (FL) active 8-aryl guanosine derivatives were prepared and applied for cation mediated self-assembly to form the H-bonded G8-quadruplexes. The p-cyano (p-CN) and 8-anthracene (8-An) substituted guanosines were identified to give the strongest fluorescence with the formation of G8-octamers (G8) both in solution (NMR) and solid state (X-ray). This well-defined G8-octamer system has provided the first direct evidence on the self-assembled G-quadruplex fluorescence emission with aggregation-induced emission (AIE), which could be applied as the foundation for FL molecular probe design toward G-quadruplex recognition.
Collapse
Affiliation(s)
- Ying He
- Department of Chemistry, University of South Florida, 4202 E. Fowler Avenue, Tampa, Florida 33620, United States
| | - Mengjia Liu
- Department of Chemistry, University of South Florida, 4202 E. Fowler Avenue, Tampa, Florida 33620, United States
| | - Shun Teng
- Department of Chemistry, University of South Florida, 4202 E. Fowler Avenue, Tampa, Florida 33620, United States
| | - Lukasz Wojtas
- Department of Chemistry, University of South Florida, 4202 E. Fowler Avenue, Tampa, Florida 33620, United States
| | - Guangxin Gu
- Department of Materials Science, Fudan University, 2005 Songhu Rd., Shanghai, 200438, PR China
| | - Xiaodong Shi
- Department of Chemistry, University of South Florida, 4202 E. Fowler Avenue, Tampa, Florida 33620, United States
| |
Collapse
|
4
|
Johnson RE, van der Zalm JM, Chen A, Bell IJ, Van Raay TJ, Al-Abdul-Wahid MS, Manderville RA. Unraveling the Chemosensing Mechanism by the 7-(Diethylamino)coumarin-hemicyanine Hybrid: A Ratiometric Fluorescent Probe for Hydrogen Peroxide. Anal Chem 2022; 94:11047-11054. [PMID: 35894588 DOI: 10.1021/acs.analchem.2c01852] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The hemicyanine hybrid containing the 7-(diethylamino)coumarin (ACou) donor attached to the cationic indolenium (Ind) acceptor through a vinyl linkage (ACou-Ind) represents a classic ratiometric fluorescent probe for detecting nucleophilic analytes, such as cyanide and reactive sulfur species (RSS), through addition reactions that disrupt dye conjugation to turn off red internal charge transfer (ICT) fluorescence and turn on blue coumarin emission. The chemosensing mechanism for RSS detection by ACou-Ind suggested in the literature has now been revised. Our studies demonstrate that thiolates react with ACou-Ind through conjugate addition to afford C4-SR adducts that lack coumarin fluorescence due to photoinduced electron transfer quenching by the electron-rich enamine intermediate. Thus, ACou-Ind serves as a turn-off probe through loss of red ICT fluorescence upon RSS addition. The literature also suggests that blue coumarin emission of thiolate adducts is enhanced in the presence of reactive oxygen species (ROS) due to ROS-mediated cellular changes. Our studies predict that such a scenario is unlikely and that thiolate adducts undergo oxidative deconjugation in the presence of H2O2, the pervasive ROS. Under basic conditions, H2O2 also reacts directly with ACou-Ind to generate intense coumarin fluorescence through an epoxidation process. The relevance of our chemosensing mechanism for ACou-Ind was assessed within live zebrafish, and implications for the utility of ACou-Ind for unraveling the interplay between RSS and ROS are discussed.
Collapse
Affiliation(s)
- Ryan E Johnson
- Departments of Chemistry and Toxicology, University of Guelph, Guelph, Ontario N1G 2W1, Canada
| | - Joshua M van der Zalm
- Departments of Chemistry and Toxicology, University of Guelph, Guelph, Ontario N1G 2W1, Canada
| | - Aicheng Chen
- Departments of Chemistry and Toxicology, University of Guelph, Guelph, Ontario N1G 2W1, Canada
| | - Ian J Bell
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, Ontario N1G 2W1, Canada
| | - Terence J Van Raay
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, Ontario N1G 2W1, Canada
| | | | - Richard A Manderville
- Departments of Chemistry and Toxicology, University of Guelph, Guelph, Ontario N1G 2W1, Canada
| |
Collapse
|
5
|
Kawamura S, Palte RL, Kim HY, Saurí J, Sondey C, Mansueto MS, Altman MD, Machacek MR. Design and synthesis of unprecedented 9- and 10-membered cyclonucleosides with PRMT5 inhibitory activity. Bioorg Med Chem 2022; 66:116820. [PMID: 35594650 DOI: 10.1016/j.bmc.2022.116820] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 05/06/2022] [Accepted: 05/09/2022] [Indexed: 11/16/2022]
Abstract
Synthesis of medium-sized rings is known to be challenging due to high transannular strain especially for 9- and 10-membered rings. Herein we report design and synthesis of unprecedented 9- and 10-membered purine 8,5'-cyclonucleosides as the first cyclonucleoside PRMT5 inhibitors. The cocrystal structure of PRMT5:MEP50 in complex with the synthesized 9-membered cyclonucleoside 1 revealed its binding mode in the SAM binding pocket of PRMT5.
Collapse
Affiliation(s)
- Shuhei Kawamura
- Discovery Chemistry, Merck & Co., Inc., Boston, MA 02115, United States.
| | - Rachel L Palte
- Computational and Structural Chemistry, Merck & Co., Inc., Boston, MA 02115, United States
| | - Hai-Young Kim
- NMR Structure Elucidation, Process and Analytical Chemistry, Merck & Co., Inc., Boston, MA 02115, United States
| | - Josep Saurí
- NMR Structure Elucidation, Process and Analytical Chemistry, Merck & Co., Inc., Boston, MA 02115, United States
| | - Christopher Sondey
- Quantitative Biosciences, Merck & Co., Inc., Boston, MA 02115, United States
| | - My S Mansueto
- Quantitative Biosciences, Merck & Co., Inc., Boston, MA 02115, United States
| | - Michael D Altman
- Computational and Structural Chemistry, Merck & Co., Inc., Boston, MA 02115, United States
| | | |
Collapse
|
6
|
Zhang Y, He Y, Wojtas L, Shi X, Guo H. Construction of Supramolecular Organogel with Circularly Polarized Luminescence by Self-Assembled Guanosine Octamer. CELL REPORTS. PHYSICAL SCIENCE 2020; 1:100211. [PMID: 33179016 PMCID: PMC7654816 DOI: 10.1016/j.xcrp.2020.100211] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Gel formation using guanosine self-assembly is an important process in supramolecular chemistry. Here, we report the stepwise construction of circularly polarized luminescent supramolecular organogels from self-assembled guanosine quadruplexes. A lipophilic guanosine derivative (aldG) is designed and synthesized for the formation of a well-defined G8-octamer. The diamine linkers are used to connect G8-octamer units by imine formation to facilitate the construction of the supramolecular gel networks. 1H NMR experiments show that the pre-assembled aldG8-octamer remains intact and is crucial for transparent and stiff organogel formation. With extended conjugation, the aldG organogels exhibit strong green fluorescence emission and circularly polarized properties without the assistance of any external fluorescent dyes, suggesting an alternative approach to construct molecular probes for biological and material applications.
Collapse
Affiliation(s)
- Yanbin Zhang
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, PR China
- These authors contributed equally
| | - Ying He
- Department of Chemistry, University of South Florida, 4202 E. Fowler Avenue, Tampa, FL 33620, USA
- These authors contributed equally
| | - Lukasz Wojtas
- Department of Chemistry, University of South Florida, 4202 E. Fowler Avenue, Tampa, FL 33620, USA
| | - Xiaodong Shi
- Department of Chemistry, University of South Florida, 4202 E. Fowler Avenue, Tampa, FL 33620, USA
- Lead Contact
| | - Hao Guo
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, PR China
| |
Collapse
|