1
|
Ferreira FHDC, Farrell NP, Costa LAS. Spermine and spermidine SI-PPCs: Molecular dynamics reveals enhanced biomolecular interactions. Int J Biol Macromol 2024; 278:134654. [PMID: 39128748 DOI: 10.1016/j.ijbiomac.2024.134654] [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: 04/12/2024] [Revised: 08/07/2024] [Accepted: 08/08/2024] [Indexed: 08/13/2024]
Abstract
In this paper the effects on the interaction of highly positively charged substitution-inert platinum polynuclear complexes (SI-PPCs) with negatively charged DNA and heparin are examined and compared by theoretical chemistry methods. Electrostatic and hydrogen bonding interactions contribute to the overall effects on the biomolecule. Root Mean Square (RMS) deviation, Solvent Accessible Surface, RMS fluctuation, and interaction analysis all confirm similar effects on both biomolecules, dictated predominantly by the total positive charge and total number of hydrogen bonds formed. Especially, changes in structural parameters suggesting condensation and reduction of available surface area will reduce or prevent normal protein recognition and may thus potentially inhibit biological mechanisms related to apoptosis (DNA) or reduced vascularization viability (HEP). Thermodynamic analyses supported these findings with favourable interaction energies. The comparison of DNA and heparin confirms the general intersectionality between the two biomolecules and confirms the intrinsic dual-nature function of this chemotype. The distinction between the two-limiting mode of actions (HS or DNA-centred) could reflect an intriguing balance between extracellular (GAG) and intracellular (DNA) binding and affinities. The results underline the need to fully understand GAG-small molecule interactions and their contribution to drug pharmacology and related therapeutic modalities. This report contributes to that understanding.
Collapse
Affiliation(s)
- Frederico Henrique do C Ferreira
- NEQC - Núcleo de Estudos em Química Computacional, Departamento de Química, ICE, Universidade Federal de Juiz de Fora, Juiz de Fora, Minas Gerais 36036-900, Brazil
| | - Nicholas P Farrell
- Department of Chemistry, Virginia Commonwealth University, Richmond, VA 23284-2006, USA
| | - Luiz Antônio S Costa
- NEQC - Núcleo de Estudos em Química Computacional, Departamento de Química, ICE, Universidade Federal de Juiz de Fora, Juiz de Fora, Minas Gerais 36036-900, Brazil.
| |
Collapse
|
2
|
Katner S, Ginsburg EP, Hampton JD, Peterson EJ, Koblinski JE, Farrell NP. A Comparison of Di- and Trinuclear Platinum Complexes Interacting with Glycosaminoglycans for Targeted Chemotherapy. ACS Med Chem Lett 2023; 14:1224-1230. [PMID: 37736178 PMCID: PMC10510529 DOI: 10.1021/acsmedchemlett.3c00244] [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] [Received: 06/01/2023] [Accepted: 08/30/2023] [Indexed: 09/23/2023] Open
Abstract
Heparan sulfate proteoglycans (HSPGs) and their associated proteins aid in tumor progression through modulation of biological events such as cell invasion, angiogenesis, metastasis, and immunological responses. Metalloshielding of the anionic heparan sulfate (HS) chains by cationic polynuclear platinum complexes (PPCs) prevents the HS from interacting with HS-associated proteins and thus diminishes the critical functions of HSPG. Studies herein exploring the PPC-HS interactions demonstrated that a series of PPCs varying in charge, nuclearity, distance between Pt centers, and hydrogen-bonding ability influence HS affinity. We report that the polyamine-linked complexes have high HS affinity and display excellent in vivo activity against breast cancer metastases and those arising in the bone and liver compared to carboplatin. Overall, the PPC-HS niche offers an attractive approach for targeting HSPG-expressing tumor cells.
Collapse
Affiliation(s)
- Samantha
J. Katner
- Department
of Biochemistry, Chemistry, and Geology, Minnesota State University, Mankato, Mankato, Minnesota 56001, United States
| | - Eric P. Ginsburg
- Department
of Chemistry, Virginia Commonwealth University, Richmond, Virginia 23284, United States
| | - James D. Hampton
- Department
of Chemistry, Virginia Commonwealth University, Richmond, Virginia 23284, United States
- Massey
Cancer Center, Virginia Commonwealth University, Richmond, Virginia 23298, United States
| | - Erica J. Peterson
- Department
of Chemistry, Virginia Commonwealth University, Richmond, Virginia 23284, United States
- Massey
Cancer Center, Virginia Commonwealth University, Richmond, Virginia 23298, United States
| | - Jennifer E. Koblinski
- Massey
Cancer Center, Virginia Commonwealth University, Richmond, Virginia 23298, United States
- Department
of Pathology, Virginia Commonwealth University, Richmond, Virginia 23298, United States
| | - Nicholas P. Farrell
- Department
of Chemistry, Virginia Commonwealth University, Richmond, Virginia 23284, United States
- Massey
Cancer Center, Virginia Commonwealth University, Richmond, Virginia 23298, United States
| |
Collapse
|
3
|
Christian JM, Zoepfl M, Johnson WE, Ginsburg E, Peterson EJ, Hampton JD, Farrell NP. Glycosaminoglycan-directed cobalt complexes. J Inorg Biochem 2023; 245:112254. [PMID: 37182504 DOI: 10.1016/j.jinorgbio.2023.112254] [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: 03/15/2023] [Revised: 04/20/2023] [Accepted: 05/08/2023] [Indexed: 05/16/2023]
Abstract
The biological activity of the 6+ Co containing Werner's Complex has been described and mechanistic considerations suggest that the highly anionic glycosaminoglycans (heparan sulfate, HS, GAGs) are implicated in this activity [Paiva et al. 2021]. To examine in detail the molecular basis of Werner's Complex biological properties we have examined a selection of simple mononuclear Co3+ compounds for their interactions with HS and Fondaparinux (FPX). FPX is a highly sulfated synthetic pentasaccharide used as a model HS substrate [Mangrum et al. 2014, Peterson et al. 2017]. The Co complexes were chosen to be formally substitution-inert and/or have the potential for covalent binding to the biomolecule. Using both indirect competitive inhibition assays and direct mass spectrometric assays, formally substitution-inert complexes bound to FPX with protection from multiple sulfate loss in the gas phase through metalloshielding. Covalent binding of Co-Cl complexes as in [CoCl(NH3)5]2+ and cis-[CoCl2(en)2]+ was confirmed by mass spectrometry. Interestingly, the former complex was shown to be an effective inhibitor of bacterial heparinase enzyme activity and to inhibit heparanase-dependent cellular invasion through the extracellular matrix (ECM). Pursuing the theme of metalloglycomics, we have observed the hitherto unappreciated biological activity of the simple [CoCl(NH3)5]2+ compound, a staple of most inorganic chemistry lab curricula.
Collapse
Affiliation(s)
- Jessica M Christian
- Department of Chemistry, Virginia Commonwealth University, 1001 W Main St, Richmond, VA 23284, United States of America
| | - Mary Zoepfl
- Department of Chemistry, Virginia Commonwealth University, 1001 W Main St, Richmond, VA 23284, United States of America
| | - Wyatt E Johnson
- Massey Cancer Center, Virginia Commonwealth University, 1300 E Marshall Street, Richmond, VA 23298-0037, United States of America
| | - Eric Ginsburg
- Department of Chemistry, Virginia Commonwealth University, 1001 W Main St, Richmond, VA 23284, United States of America
| | - Erica J Peterson
- Massey Cancer Center, Virginia Commonwealth University, 1300 E Marshall Street, Richmond, VA 23298-0037, United States of America
| | - J David Hampton
- Massey Cancer Center, Virginia Commonwealth University, 1300 E Marshall Street, Richmond, VA 23298-0037, United States of America
| | - Nicholas P Farrell
- Department of Chemistry, Virginia Commonwealth University, 1001 W Main St, Richmond, VA 23284, United States of America; Massey Cancer Center, Virginia Commonwealth University, 1300 E Marshall Street, Richmond, VA 23298-0037, United States of America.
| |
Collapse
|
4
|
Equilibrium Studies on Pd(II)-Amine Complexes with Bio-Relevant Ligands in Reference to Their Antitumor Activity. Int J Mol Sci 2023; 24:ijms24054843. [PMID: 36902279 PMCID: PMC10003265 DOI: 10.3390/ijms24054843] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 01/05/2023] [Accepted: 02/14/2023] [Indexed: 03/06/2023] Open
Abstract
This review article presents an overview of the equilibrium studies on Pd-amine complexes with bio-relevant ligands in reference to their antitumor activity. Pd(II) complexes with amines of different functional groups, were synthesized and characterized in many studies. The complex formation equilibria of Pd(amine)2+ complexes with amino acids, peptides, dicarboxylic acids and DNA constituents, were extensively investigated. Such systems may be considered as one of the models for the possible reactions occurring with antitumor drugs in biological systems. The stability of the formed complexes depends on the structural parameters of the amines and the bio-relevant ligands. The evaluated speciation curves can help to provide a pictorial presentation of the reactions in solutions of different pH values. The stability data of complexes with sulfur donor ligands compared with those of DNA constituents, can reveal information regarding the deactivation caused by sulfur donors. The formation equilibria of binuclear complexes of Pd(II) with DNA constituents was investigated to support the biological significance of this class of complexes. Most of the Pd(amine)2+ complexes investigated were studied in a low dielectric constant medium, resembling that of a biological medium. Investigations of the thermodynamic parameters reveal that the formation of the Pd(amine)2+ complex species is exothermic.
Collapse
|
5
|
Rosa NMP, Ferreira FHDC, Farrell NP, Costa LAS. Substitution-inert polynuclear platinum complexes and Glycosaminoglycans: A molecular dynamics study of its non-covalent interactions. J Inorg Biochem 2022; 232:111811. [DOI: 10.1016/j.jinorgbio.2022.111811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 03/17/2022] [Accepted: 03/25/2022] [Indexed: 10/18/2022]
|
6
|
de Paiva RE, Johnson WE, Gorle AK, Berners-Price SJ, Farrell NP. Metalloglycomics of tris(2,2′-bipyridyl) cobalt and ruthenium compounds. J Inorg Biochem 2022; 229:111731. [DOI: 10.1016/j.jinorgbio.2022.111731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 01/13/2022] [Accepted: 01/13/2022] [Indexed: 10/19/2022]
|
7
|
Bailly B, Gorle AK, Dirr L, Malde AK, Farrell NP, Berners-Price SJ, von Itzstein M. Platinum complexes act as shielding agents against virus infection. Chem Commun (Camb) 2021; 57:4666-4669. [PMID: 33977992 DOI: 10.1039/d1cc01593a] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
We determine that the substitution-inert polynuclear platinum complex (PPC) TriplatinNC is an antiviral agent and protects cells from enterovirus 71 and human metapneumovirus infection. This protection occurs through the formation of adducts with cell-surface glycosaminoglycans. Our detailed mechanistic investigation demonstrates that TriplatinNC blocks viral entry by shielding cells from virus attack, opening new directions for metalloshielding antiviral drug development.
Collapse
Affiliation(s)
- Benjamin Bailly
- Institute for Glycomics, Griffith University Gold Coast Campus, Southport, Queensland, Australia.
| | - Anil K Gorle
- Institute for Glycomics, Griffith University Gold Coast Campus, Southport, Queensland, Australia.
| | - Larissa Dirr
- Institute for Glycomics, Griffith University Gold Coast Campus, Southport, Queensland, Australia.
| | - Alpeshkumar K Malde
- Institute for Glycomics, Griffith University Gold Coast Campus, Southport, Queensland, Australia.
| | - Nicholas P Farrell
- Institute for Glycomics, Griffith University Gold Coast Campus, Southport, Queensland, Australia. and Department of Chemistry, Virginia Commonwealth University, Richmond, VA 23284-2006, USA
| | - Susan J Berners-Price
- Institute for Glycomics, Griffith University Gold Coast Campus, Southport, Queensland, Australia.
| | - Mark von Itzstein
- Institute for Glycomics, Griffith University Gold Coast Campus, Southport, Queensland, Australia.
| |
Collapse
|
8
|
Paiva REF, Peterson EJ, Malina J, Zoepfl M, Hampton JD, Johnson WE, Graminha A, Ourahmane A, McVoy MA, Brabec V, Berners‐Price SJ, Farrell NP. On the Biology of Werner's Complex. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202105019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Raphael E. F. Paiva
- Institute for Glycomics Griffith University Gold Coast Campus Southport Qld. 4222 Australia
| | - Erica J. Peterson
- Department of Chemistry Virginia Commonwealth University Richmond VA 23284-2006 USA
- Massey Cancer Center Virginia Commonwealth University Richmond VA 23298-0037 USA
| | - Jaroslav Malina
- Institute of Biophysics Czech Academy of Sciences Kralovopolska 135 61265 Brno Czech Republic
| | - Mary Zoepfl
- Department of Chemistry Virginia Commonwealth University Richmond VA 23284-2006 USA
| | - J. David Hampton
- Massey Cancer Center Virginia Commonwealth University Richmond VA 23298-0037 USA
- Department of Biochemistry and Molecular Biology Virginia Commonwealth University Richmond Virginia 23298-0033 USA
| | - Wyatt E. Johnson
- Department of Chemistry Virginia Commonwealth University Richmond VA 23284-2006 USA
| | - Angelica Graminha
- Department of Chemistry Virginia Commonwealth University Richmond VA 23284-2006 USA
| | - Amine Ourahmane
- Department of Pediatrics Virginia Commonwealth University Richmond VA 23298-0163 USA
| | - Michael A. McVoy
- Department of Pediatrics Virginia Commonwealth University Richmond VA 23298-0163 USA
| | - Viktor Brabec
- Institute of Biophysics Czech Academy of Sciences Kralovopolska 135 61265 Brno Czech Republic
| | - Susan J. Berners‐Price
- Institute for Glycomics Griffith University Gold Coast Campus Southport Qld. 4222 Australia
| | - Nicholas P. Farrell
- Institute for Glycomics Griffith University Gold Coast Campus Southport Qld. 4222 Australia
- Department of Chemistry Virginia Commonwealth University Richmond VA 23284-2006 USA
- Massey Cancer Center Virginia Commonwealth University Richmond VA 23298-0037 USA
| |
Collapse
|
9
|
de Paiva REF, Peterson EJ, Malina J, Zoepfl M, Hampton JD, Johnson WE, Graminha A, Ourahmane A, McVoy MA, Brabec V, Berners-Price SJ, Farrell NP. On the Biology of Werner's Complex. Angew Chem Int Ed Engl 2021; 60:17123-17130. [PMID: 34105220 PMCID: PMC8464317 DOI: 10.1002/anie.202105019] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 05/30/2021] [Indexed: 11/05/2022]
Abstract
Werner's Complex, as a cationic coordination complex (CCC), has hitherto unappreciated biological properties derived from its binding affinity to highly anionic biomolecules such as glycosaminoglycans (GAGs) and nucleic acids. Competitive inhibitor and spectroscopic assays confirm the high affinity to GAGs heparin, heparan sulfate (HS), and its pentasaccharide mimetic Fondaparinux (FPX). Functional consequences of this affinity include inhibition of FPX cleavage by bacterial heparinase and mammalian heparanase enzymes with inhibition of cellular invasion and migration. Werner's Complex is a very efficient condensing agent for DNA and tRNA. In proof-of-principle for translational implications, it is demonstrated to display antiviral activity against human cytomegalovirus (HCMV) at micromolar concentrations with promising selectivity. Exploitation of non-covalent hydrogen-bonding and electrostatic interactions has motivated the unprecedented discovery of these properties, opening new avenues of research for this iconic compound.
Collapse
Affiliation(s)
- Raphael E F de Paiva
- Institute for Glycomics, Griffith University, Gold Coast Campus, Southport, Qld., 4222, Australia
| | - Erica J Peterson
- Department of Chemistry, Virginia Commonwealth University, Richmond, VA, 23284-2006, USA
- Massey Cancer Center, Virginia Commonwealth University, Richmond, VA, 23298-0037, USA
| | - Jaroslav Malina
- Institute of Biophysics, Czech Academy of Sciences, Kralovopolska 135, 61265, Brno, Czech Republic
| | - Mary Zoepfl
- Department of Chemistry, Virginia Commonwealth University, Richmond, VA, 23284-2006, USA
| | - J David Hampton
- Massey Cancer Center, Virginia Commonwealth University, Richmond, VA, 23298-0037, USA
- Department of Biochemistry and Molecular Biology, Virginia Commonwealth University, Richmond, Virginia, 23298-0033, USA
| | - Wyatt E Johnson
- Department of Chemistry, Virginia Commonwealth University, Richmond, VA, 23284-2006, USA
| | - Angelica Graminha
- Department of Chemistry, Virginia Commonwealth University, Richmond, VA, 23284-2006, USA
| | - Amine Ourahmane
- Department of Pediatrics, Virginia Commonwealth University, Richmond, VA, 23298-0163, USA
| | - Michael A McVoy
- Department of Pediatrics, Virginia Commonwealth University, Richmond, VA, 23298-0163, USA
| | - Viktor Brabec
- Institute of Biophysics, Czech Academy of Sciences, Kralovopolska 135, 61265, Brno, Czech Republic
| | - Susan J Berners-Price
- Institute for Glycomics, Griffith University, Gold Coast Campus, Southport, Qld., 4222, Australia
| | - Nicholas P Farrell
- Institute for Glycomics, Griffith University, Gold Coast Campus, Southport, Qld., 4222, Australia
- Department of Chemistry, Virginia Commonwealth University, Richmond, VA, 23284-2006, USA
- Massey Cancer Center, Virginia Commonwealth University, Richmond, VA, 23298-0037, USA
| |
Collapse
|
10
|
Gorle AK, Haselhorst T, Katner SJ, Everest-Dass AV, Hampton JD, Peterson EJ, Koblinski JE, Katsuta E, Takabe K, von Itzstein M, Berners-Price SJ, Farrell NP. Conformational Modulation of Iduronic Acid-Containing Sulfated Glycosaminoglycans by a Polynuclear Platinum Compound and Implications for Development of Antimetastatic Platinum Drugs. Angew Chem Int Ed Engl 2021; 60:3283-3289. [PMID: 33174390 PMCID: PMC7902481 DOI: 10.1002/anie.202013749] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Indexed: 12/19/2022]
Abstract
1 H NMR spectroscopic studies on the 1:1 adduct of the pentasaccharide Fondaparinux (FPX) and the substitution-inert polynuclear platinum complex TriplatinNC show significant modulation of geometry around the glycosidic linkages of the FPX constituent monosaccharides. FPX is a valid model for the highly sulfated cell signalling molecule heparan sulfate (HS). The conformational ratio of the 1 C4 :2 S0 forms of the FPX residue IdoA(2S) is altered from ca. 35:65 (free FPX) to ca. 75:25 in the adduct; the first demonstration of a small molecule affecting conformational changes on a HS oligosaccharide. Functional consequences of such binding are suggested to be inhibition of HS cleavage in MDA-MB-231 triple-negative breast cancer (TNBC) cells. We further describe inhibition of metastasis by TriplatinNC in the TNBC 4T1 syngeneic tumour model. Our work provides insight into a novel approach for design of platinum drugs (and coordination compounds in general) with intrinsic anti-metastatic potential.
Collapse
Affiliation(s)
- Anil K. Gorle
- Institute for Glycomics, Griffith University, Gold Coast Campus, Southport, Queensland, 4222, Australia
| | - Thomas Haselhorst
- Institute for Glycomics, Griffith University, Gold Coast Campus, Southport, Queensland, 4222, Australia
| | - Samantha J. Katner
- Department of Chemistry, Virginia Commonwealth University, Richmond, Virginia 23284-2006, USA
- Department of Biochemistry, Chemistry and Geology, Minnesota State University, Mankato, Mankato, Minnesota 56001, USA
| | - Arun V. Everest-Dass
- Institute for Glycomics, Griffith University, Gold Coast Campus, Southport, Queensland, 4222, Australia
| | - James D. Hampton
- Department of Chemistry, Virginia Commonwealth University, Richmond, Virginia 23284-2006, USA
| | - Erica J. Peterson
- Department of Chemistry, Virginia Commonwealth University, Richmond, Virginia 23284-2006, USA
| | - Jennifer E. Koblinski
- Department of Pathology, Division of Cellular and Molecular Pathogenesis, Virginia Commonwealth University, Richmond, Virginia 23284-2006, USA
| | - Eriko Katsuta
- Department of Surgical Oncology, Roswell Park Comprehensive Cancer Center, University at Buffalo, Buffalo, New York, 14203, USA
| | - Kazuaki Takabe
- Department of Surgical Oncology, Roswell Park Comprehensive Cancer Center, University at Buffalo, Buffalo, New York, 14203, USA
| | - Mark von Itzstein
- Institute for Glycomics, Griffith University, Gold Coast Campus, Southport, Queensland, 4222, Australia
| | - Susan J. Berners-Price
- Institute for Glycomics, Griffith University, Gold Coast Campus, Southport, Queensland, 4222, Australia
| | - Nicholas P. Farrell
- Institute for Glycomics, Griffith University, Gold Coast Campus, Southport, Queensland, 4222, Australia
- Department of Chemistry, Virginia Commonwealth University, Richmond, Virginia 23284-2006, USA
| |
Collapse
|
11
|
Gorle AK, Haselhorst T, Katner SJ, Everest‐Dass AV, Hampton JD, Peterson EJ, Koblinski JE, Katsuta E, Takabe K, Itzstein M, Berners‐Price SJ, Farrell NP. Conformational Modulation of Iduronic Acid‐Containing Sulfated Glycosaminoglycans by a Polynuclear Platinum Compound and Implications for Development of Antimetastatic Platinum Drugs. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202013749] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Anil K. Gorle
- Institute for Glycomics Griffith University Gold Coast Campus Southport Queensland 4222 Australia
| | - Thomas Haselhorst
- Institute for Glycomics Griffith University Gold Coast Campus Southport Queensland 4222 Australia
| | - Samantha J. Katner
- Department of Chemistry Virginia Commonwealth University Richmond VA 23284-2006 USA
- Department of Biochemistry, Chemistry and Geology Minnesota State University Mankato, Mankato MN 56001 USA
| | - Arun V. Everest‐Dass
- Institute for Glycomics Griffith University Gold Coast Campus Southport Queensland 4222 Australia
| | - James D. Hampton
- Department of Chemistry Virginia Commonwealth University Richmond VA 23284-2006 USA
- Massey Cancer Center Virginia Commonwealth University Richmond VA 23298-0037 USA
| | - Erica J. Peterson
- Department of Chemistry Virginia Commonwealth University Richmond VA 23284-2006 USA
- Massey Cancer Center Virginia Commonwealth University Richmond VA 23298-0037 USA
| | - Jennifer E. Koblinski
- Massey Cancer Center Virginia Commonwealth University Richmond VA 23298-0037 USA
- Department of Pathology Division of Cellular and Molecular Pathogenesis Virginia Commonwealth University Richmond VA 23284-2006 USA
| | - Eriko Katsuta
- Department of Surgical Oncology Roswell Park Comprehensive Cancer Center University at Buffalo Buffalo NY 14203 USA
| | - Kazuaki Takabe
- Department of Surgical Oncology Roswell Park Comprehensive Cancer Center University at Buffalo Buffalo NY 14203 USA
| | - Mark Itzstein
- Institute for Glycomics Griffith University Gold Coast Campus Southport Queensland 4222 Australia
| | - Susan J. Berners‐Price
- Institute for Glycomics Griffith University Gold Coast Campus Southport Queensland 4222 Australia
| | - Nicholas P. Farrell
- Institute for Glycomics Griffith University Gold Coast Campus Southport Queensland 4222 Australia
- Department of Chemistry Virginia Commonwealth University Richmond VA 23284-2006 USA
- Massey Cancer Center Virginia Commonwealth University Richmond VA 23298-0037 USA
| |
Collapse
|
12
|
Substitution-inert polynuclear platinum compounds inhibit human cytomegalovirus attachment and entry. Antiviral Res 2020; 184:104957. [DOI: 10.1016/j.antiviral.2020.104957] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 10/16/2020] [Accepted: 10/19/2020] [Indexed: 12/25/2022]
|
13
|
Wilson CS, Prior TJ, Sandland J, Savoie H, Boyle RW, Murray BS. Homo‐ and Hetero‐dinuclear Arene‐Linked Osmium(II) and Ruthenium(II) Organometallics: Probing the Impact of Metal Variation on Reactivity and Biological Activity. Chemistry 2020; 26:11593-11603. [DOI: 10.1002/chem.202002052] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 05/31/2020] [Indexed: 12/16/2022]
Affiliation(s)
- Christopher S. Wilson
- Department of Chemistry and Biochemistry University of Hull Cottingham Road Hull HU6 7RX UK
| | - Timothy J. Prior
- Department of Chemistry and Biochemistry University of Hull Cottingham Road Hull HU6 7RX UK
| | - Jordon Sandland
- Department of Chemistry and Biochemistry University of Hull Cottingham Road Hull HU6 7RX UK
| | - Huguette Savoie
- Department of Chemistry and Biochemistry University of Hull Cottingham Road Hull HU6 7RX UK
| | - Ross W. Boyle
- Department of Chemistry and Biochemistry University of Hull Cottingham Road Hull HU6 7RX UK
| | - Benjamin S. Murray
- Department of Chemistry and Biochemistry University of Hull Cottingham Road Hull HU6 7RX UK
| |
Collapse
|
14
|
Stelling MP, Motta JM, Mashid M, Johnson WE, Pavão MS, Farrell NP. Metal ions and the extracellular matrix in tumor migration. FEBS J 2020; 286:2950-2964. [PMID: 31379111 DOI: 10.1111/febs.14986] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 05/22/2019] [Accepted: 07/06/2019] [Indexed: 12/15/2022]
Abstract
In this review, we explore the roles of divalent metal ions in structure and function within the extracellular matrix (ECM), specifically, their interaction with glycosaminoglycans (GAGs) during tumor progression. Metals and GAGs have been individually associated with physiological and pathological processes, however, their combined activities in regulating cell behavior and ECM remodeling have not been fully explored to date. During tumor progression, divalent metals and GAGs participate in central processes, such as cell migration and angiogenesis, either by modulating cell surface molecules, as well as soluble signaling factors. In addition, studies on metals and polysaccharides interactions have been of great value, as they provide structural information that can be correlated with function. Finally, we believe that understanding how metals are regulated in physiological and pathological conditions is paramount for the development of new treatment strategies, as well as diagnostic and exploratory tools.
Collapse
Affiliation(s)
- Mariana P Stelling
- Instituto Federal de Educacao, Educação, Ciência e Tecnologia do Rio de Janeiro, Brazil
| | | | | | | | | | | |
Collapse
|
15
|
|
16
|
Gorle AK, Berners-Price SJ, Farrell NP. Biological relevance of interaction of platinum drugs with O-donor ligands. Inorganica Chim Acta 2019; 495:118974. [PMID: 31354168 PMCID: PMC6660021 DOI: 10.1016/j.ica.2019.118974] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Platinum complexes with S and N-donor small molecule ligands have received much attention with respect to understanding of Pt-protein and Pt-DNA(RNA) interactions in biology. Oxygen-donor ligands have received less attention, partly due to the fact that as a hard Lewis base, oxygen-donor interactions are expected to be less favourable for the soft Lewis acid properties of Pt(II), especially. Yet, it is now clear that for a full understanding of the cellular fate of platinum complexes, a plethora of oxygen-donor interactions are possible, considering extracellular and intracellular concentrations of simple anions in buffer. Further, the importance of the general class of glycans, the third major class of biomolecules after proteins and nucleic acids, contain many specific examples of important biomolecules such as sialic acids and sulphated glycosaminoglycans capable of metal complex interactions. In this contribution we summarise some important kinetic and thermodynamic aspects of platinum-oxygen-donor ligand interactions and their relevance to examples of biomolecular interactions contributing to the overall profile of platinum (and metal complexes in general) biology.
Collapse
Affiliation(s)
- Anil K Gorle
- Institute for Glycomics, Griffith University, Gold Coast Campus, Southport, Queensland, 4222, Australia
| | - Susan J Berners-Price
- Institute for Glycomics, Griffith University, Gold Coast Campus, Southport, Queensland, 4222, Australia
| | - Nicholas P Farrell
- Department of Chemistry, Virginia Commonwealth University, Richmond, 23284, Virginia, USA
- Institute for Glycomics, Griffith University, Gold Coast Campus, Southport, Queensland, 4222, Australia
| |
Collapse
|
17
|
Gorle AK, Rajaratnam P, Chang CW, von Itzstein M, Berners-Price SJ, Farrell NP. Glycans as Ligands in Bioinorganic Chemistry. Probing the Interaction of a Trinuclear Platinum Anticancer Complex with Defined Monosaccharide Fragments of Heparan Sulfate. Inorg Chem 2019; 58:7146-7155. [PMID: 30632736 DOI: 10.1021/acs.inorgchem.8b03035] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
We report herein a detailed NMR study of the aquation and subsequent covalent binding of the trinuclear clinical agent [{ trans-PtCl(15NH3)2}2{μ- trans-Pt(15NH3)2(15NH2(CH2)615NH2)2}]4+ (1, 1,0,1/ t, t, t or Triplatin) with three d-glucosamine residues containing varied O-sulfate and N-sulfate or N-acetyl substitutions, which represent monosaccharide fragments present within the repeating disaccharide sequences of cell surface heparan sulfate (HS). The monosaccharides GlcNS(6S), GlcNS, and GlcNAc(6S) were synthesized in good yield from a common 4,6-diol α-methyl glucopyranoside intermediate. The reactions of 15N-1 with sodium sulfate, GlcNS(6S), GlcNS, and GlcNAc(6S) were followed by 2D [1H,15N] heteronuclear single quantum coherence (HSQC) NMR spectroscopy using conditions (298 K, pH ≈5.4) similar to those previously used for other anionic systems, allowing for a direct comparison. The equilibrium constants (p K1) for the aquation of 1 in the presence of GlcNS(6S) and GlcNS were slightly higher compared to that of the aquation in a sulfate solution, while a comparable p K1 value was observed in the presence of GlcNAc(6S). A comparison of the rate constants for sulfate displacement of the aqua ligand showed preferential binding to 2- N-sulfate compared to 6- O-sulfate but a more rapid liberation. For disulfated GlcNS(6S), equilibrium conditions were achieved rapidly (9 h) and strongly favored the dichloro form, with <2% sulfato species observed. The value of kL1 was up to 15-fold lower than that for binding to sulfate, whereas the rate constant for the reverse ligation ( k-L1) was comparable. Equilibrium conditions were achieved much more slowly (∼ 100 h) for the reactions of 1 with GlcNS and GlcNAc(6S), attributed to covalent binding also to the N-donor of the sulfamate (GlcNS) group and the O-donor of the N-acetyl [GlcNAc(6S)] group. The rate constants ( kL2) were 20-40-fold lower than that for binding to the 2- N- or 6- O-sulfate, but the binding was less reversible, so that their equilibrium concentrations (5-8%) were comparable to the 2- N- or 6- O-sulfate-bound species. The results emphasize the relevance of glycans in bioinorganic chemistry and underpin a fundamental molecular description of the HS-Pt interactions that alter the profile of platinum agents from cytotoxic to metastatic in a systematic manner.
Collapse
Affiliation(s)
- Anil Kumar Gorle
- Institute for Glycomics , Griffith University, Gold Coast Campus , Southport , Queensland 4222 , Australia
| | - Premraj Rajaratnam
- Institute for Glycomics , Griffith University, Gold Coast Campus , Southport , Queensland 4222 , Australia
| | - Chih-Wei Chang
- Institute for Glycomics , Griffith University, Gold Coast Campus , Southport , Queensland 4222 , Australia
| | - Mark von Itzstein
- Institute for Glycomics , Griffith University, Gold Coast Campus , Southport , Queensland 4222 , Australia
| | - Susan J Berners-Price
- Institute for Glycomics , Griffith University, Gold Coast Campus , Southport , Queensland 4222 , Australia
| | - Nicholas P Farrell
- Institute for Glycomics , Griffith University, Gold Coast Campus , Southport , Queensland 4222 , Australia.,Department of Chemistry , Virginia Commonwealth University , Richmond , Virginia 23284 , United States
| |
Collapse
|
18
|
Gorle AK, Katner SJ, Johnson WE, Lee DE, Daniel AG, Ginsburg EP, von Itzstein M, Berners‐Price SJ, Farrell NP. Substitution‐Inert Polynuclear Platinum Complexes as Metalloshielding Agents for Heparan Sulfate. Chemistry 2018; 24:6606-6616. [DOI: 10.1002/chem.201706030] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Anil Kumar Gorle
- Institute for Glycomics Griffith University, Gold Coast Campus Southport Queensland 4222 Australia
| | - Samantha J. Katner
- Department of Chemistry and The Massey Cancer Center Virginia Commonwealth University Richmond 23284 Virginia USA
| | - Wyatt E. Johnson
- Department of Chemistry and The Massey Cancer Center Virginia Commonwealth University Richmond 23284 Virginia USA
| | - Daniel E. Lee
- Department of Chemistry and The Massey Cancer Center Virginia Commonwealth University Richmond 23284 Virginia USA
| | - A. Gerard Daniel
- Department of Chemistry and The Massey Cancer Center Virginia Commonwealth University Richmond 23284 Virginia USA
| | - Eric P. Ginsburg
- Department of Chemistry and The Massey Cancer Center Virginia Commonwealth University Richmond 23284 Virginia USA
| | - Mark von Itzstein
- Institute for Glycomics Griffith University, Gold Coast Campus Southport Queensland 4222 Australia
| | - Susan J. Berners‐Price
- Institute for Glycomics Griffith University, Gold Coast Campus Southport Queensland 4222 Australia
| | - Nicholas P. Farrell
- Institute for Glycomics Griffith University, Gold Coast Campus Southport Queensland 4222 Australia
- Department of Chemistry and The Massey Cancer Center Virginia Commonwealth University Richmond 23284 Virginia USA
| |
Collapse
|
19
|
Katner SJ, Johnson WE, Peterson EJ, Page P, Farrell NP. Comparison of Metal-Ammine Compounds Binding to DNA and Heparin. Glycans as Ligands in Bioinorganic Chemistry. Inorg Chem 2018; 57:3116-3125. [PMID: 29473748 DOI: 10.1021/acs.inorgchem.7b03043] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We present spectroscopic and biophysical approaches to examine the affinity of metal-ammine coordination complexes for heparin as a model for heparan sulfate (HS). Similar to nucleic acids, the highly anionic nature of heparin means it is associated in vivo with physiologically relevant cations, and this work extends their bioinorganic chemistry to substitution-inert metal-ammine compounds (M). Both indirect and direct assays were developed. M compounds are competitive inhibitors of methylene blue (MB)-heparin binding, and the change in the absorbance of the dye in the presence or absence of heparin can be used as an indirect reporter of M-heparin affinity. A second indirect assay uses the change in fluorescence of TAMRA-R9, a nonaarginine linked to a fluorescent TAMRA moiety, as a reporter for M-heparin binding. Direct assays are surface plasmon resonance (SPR) and isothermal titration calorimetry (ITC). The Kd values for TriplatinNC-heparin varied to some extent depending on the technique from 33.1 ± 2 nM (ITC) to 66.4 ± 1.3 nM (MB absorbance assay) and 340 ± 30 nM (SPR). The differences are explained by the nature of the technique and the use of heparin of differing molecular weight. Indirect probes using the displacement of ethidium bromide from DNA or, separately, fluorescently labeled oligonucleotide (DNA-Fl) can measure the relative affinities of heparin and DNA for M compounds. These assays showed essentially equivalent affinity of TriplatinNC for heparin and DNA. The generality of these methods was confirmed with a series of mononuclear cobalt, ruthenium, and platinum compounds with significantly lower affinity because of their smaller overall positive charge but in the order [Co(NH3)6]3+ > [Ru(NH3)6]3+ > [Pt(NH3)4]2+. The results on heparin can be extrapolated to glycosoaminoglycans such as HS, emphasizing the relevance of glycan interactions in understanding the biological properties of coordination compounds and the utility of the metalloglycomics concept for extending bioinorganic chemistry to this class of important biomolecules.
Collapse
Affiliation(s)
- Samantha J Katner
- Department of Chemistry and Massey Cancer Center , Virginia Commonwealth University (VCU) , Richmond , Virginia 23284 , United States
| | - Wyatt E Johnson
- Department of Chemistry and Massey Cancer Center , Virginia Commonwealth University (VCU) , Richmond , Virginia 23284 , United States
| | - Erica J Peterson
- Department of Chemistry and Massey Cancer Center , Virginia Commonwealth University (VCU) , Richmond , Virginia 23284 , United States
| | - Phillip Page
- Reichert Technologies , Depew , New York 14043 , United States
| | - Nicholas P Farrell
- Department of Chemistry and Massey Cancer Center , Virginia Commonwealth University (VCU) , Richmond , Virginia 23284 , United States
| |
Collapse
|
20
|
Brabec V, Hrabina O, Kasparkova J. Cytotoxic platinum coordination compounds. DNA binding agents. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.04.013] [Citation(s) in RCA: 77] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
|
21
|
Estrada-Ortiz N, Guarra F, de Graaf IAM, Marchetti L, de Jager MH, Groothuis GMM, Gabbiani C, Casini A. Anticancer Gold N-Heterocyclic Carbene Complexes: A Comparative in vitro and ex vivo Study. ChemMedChem 2017; 12:1429-1435. [PMID: 28741878 DOI: 10.1002/cmdc.201700316] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Revised: 07/25/2017] [Indexed: 12/15/2022]
Abstract
A series of organometallic AuI N-heterocyclic carbene (NHC) complexes was synthesized and characterized for anticancer activity in four human cancer cell lines. The compounds' toxicity in healthy tissue was determined using precision-cut kidney slices (PCKS) as a tool to determine the potential selectivity of the gold complexes ex vivo. All evaluated compounds presented cytotoxic activity toward the cancer cells in the nano- or low micromolar range. The mixed AuI NHC complex, (tert-butylethynyl)-1,3-bis-(2,6-diisopropylphenyl)imidazol-2-ylidene gold(I), bearing an alkynyl moiety as ancillary ligand, showed high cytotoxicity in cancer cells in vitro, while being barely toxic in healthy rat kidney tissues. The obtained results open new perspectives toward the design of mixed NHC-alkynyl gold complexes for cancer therapy.
Collapse
Affiliation(s)
- Natalia Estrada-Ortiz
- Department of Pharmacokinetics, Toxicology and Targeting, Groningen Research Institute of Pharmacy, University of Groningen, Antonius Deusinglaan 1, 9713, AV, Groningen, The Netherlands
| | - Federica Guarra
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via Moruzzi, 3, 56124, Pisa, Italy
| | - Inge A M de Graaf
- Department of Pharmacokinetics, Toxicology and Targeting, Groningen Research Institute of Pharmacy, University of Groningen, Antonius Deusinglaan 1, 9713, AV, Groningen, The Netherlands
| | - Lorella Marchetti
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via Moruzzi, 3, 56124, Pisa, Italy
| | - Marina H de Jager
- Department of Pharmacokinetics, Toxicology and Targeting, Groningen Research Institute of Pharmacy, University of Groningen, Antonius Deusinglaan 1, 9713, AV, Groningen, The Netherlands
| | - Geny M M Groothuis
- Department of Pharmacokinetics, Toxicology and Targeting, Groningen Research Institute of Pharmacy, University of Groningen, Antonius Deusinglaan 1, 9713, AV, Groningen, The Netherlands
| | - Chiara Gabbiani
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via Moruzzi, 3, 56124, Pisa, Italy
| | - Angela Casini
- Department of Pharmacokinetics, Toxicology and Targeting, Groningen Research Institute of Pharmacy, University of Groningen, Antonius Deusinglaan 1, 9713, AV, Groningen, The Netherlands.,School of Chemistry, Cardiff University, Main Building, Park Place, CF103AT, Cardiff, UK
| |
Collapse
|
22
|
Peterson EJ, Daniel AG, Katner SJ, Bohlmann L, Chang CW, Bezos A, Parish CR, von Itzstein M, Berners-Price SJ, Farrell NP. Antiangiogenic platinum through glycan targeting. Chem Sci 2017; 8:241-252. [PMID: 28451171 PMCID: PMC5355868 DOI: 10.1039/c6sc02515c] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Accepted: 08/12/2016] [Indexed: 01/17/2023] Open
Abstract
Heparan sulfate is identified as a ligand receptor for polynuclear platinum anti-cancer agents through sulfate cluster binding. We present a new biological role for platinum and coordination compounds and a new target for metal-based drugs while presenting a new chemotype for heparanase and growth factor inhibition through modulation (metalloshielding) of their interactions. Masking of extracellular (ECM)-resident heparan sulfate (HS) through metalloshielding results in very effective inhibition of physiologically critical HS functions including enzyme (heparanase, HPSE) and protein growth factor recognition. The interaction of the highly cationic polynuclear platinum complexes (PPCs) with the highly sulfated pentasaccharide Fondaparinux (FPX, in this case as a model HS-like substrate) results in inhibition of its cleavage by the HS-related enzyme heparanase. Binding of the fibroblast growth factor FGF-2 to HS is also inhibited with consequences for downstream signalling events as measured by a reduction in accumulation of phospho-S6 ribosomal protein in human colon tumor HCT-116 cells. The end-point of inhibition of HPSE activity and growth factor growth factor signaling is the prevention of cell invasion and angiogenesis. Finally these events culminate in inhibition of HCT-116 cell invasion at sub-cytotoxic concentrations and the process of angiogenesis. A competition assay shows that Fondaparinux can sequester the 8+ TriplatinNC from bound DNA, emphasising the strength of PPC-HS interactions. Altering the profile of platinum agents from cytotoxic to anti-metastatic has profound implications for future directions in the development of platinum-based chemotherapeutics.
Collapse
Affiliation(s)
- Erica J Peterson
- Department of Chemistry , Virginia Commonwealth University , Richmond VA 23284 , Virginia , USA .
- The Massey Cancer Center , Virginia Commonwealth University , Richmond 23294 , Virginia , USA
| | - A Gerard Daniel
- Department of Chemistry , Virginia Commonwealth University , Richmond VA 23284 , Virginia , USA .
- The Massey Cancer Center , Virginia Commonwealth University , Richmond 23294 , Virginia , USA
| | - Samantha J Katner
- Department of Chemistry , Virginia Commonwealth University , Richmond VA 23284 , Virginia , USA .
- The Massey Cancer Center , Virginia Commonwealth University , Richmond 23294 , Virginia , USA
| | - Lisa Bohlmann
- Institute for Glycomics , Griffith University , Gold Coast Campus , Southport , Queensland 4222 , Australia
| | - Chih-Wei Chang
- Institute for Glycomics , Griffith University , Gold Coast Campus , Southport , Queensland 4222 , Australia
| | - Anna Bezos
- John Curtin School of Medical Research , The Australian National University , Canberra , Australia
| | - Christopher R Parish
- John Curtin School of Medical Research , The Australian National University , Canberra , Australia
| | - Mark von Itzstein
- Institute for Glycomics , Griffith University , Gold Coast Campus , Southport , Queensland 4222 , Australia
| | - Susan J Berners-Price
- Institute for Glycomics , Griffith University , Gold Coast Campus , Southport , Queensland 4222 , Australia
| | - Nicholas P Farrell
- Department of Chemistry , Virginia Commonwealth University , Richmond VA 23284 , Virginia , USA .
- The Massey Cancer Center , Virginia Commonwealth University , Richmond 23294 , Virginia , USA
- Institute for Glycomics , Griffith University , Gold Coast Campus , Southport , Queensland 4222 , Australia
| |
Collapse
|
23
|
Farrell NP. Multi-platinum anti-cancer agents. Substitution-inert compounds for tumor selectivity and new targets. Chem Soc Rev 2015; 44:8773-85. [DOI: 10.1039/c5cs00201j] [Citation(s) in RCA: 142] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Substitution-inert polynuclear platinum complexes are inherently dual-function anti-cancer agents combining extra and intra-cellular effects in one structural chemotype.
Collapse
Affiliation(s)
- N. P. Farrell
- Department of Chemistry
- Virginia Commonwealth University
- Richmond
- USA
| |
Collapse
|
24
|
Peterson EJ, Menon VR, Gatti L, Kipping R, Dewasinghe D, Perego P, Povirk LF, Farrell NP. Nucleolar targeting by platinum: p53-independent apoptosis follows rRNA inhibition, cell-cycle arrest, and DNA compaction. Mol Pharm 2014; 12:287-97. [PMID: 25407898 PMCID: PMC4334294 DOI: 10.1021/mp5006867] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
![]()
TriplatinNC
is a highly positively charged, substitution-inert
derivative of the phase II clinical anticancer drug, BBR3464. Such
substitution-inert complexes form a distinct subset of polynuclear
platinum complexes (PPCs) interacting with DNA and other biomolecules
through noncovalent interactions. Rapid cellular entry is facilitated
via interaction with cell surface glycosoaminoglycans and is a mechanism
unique to PPCs. Nanoscale secondary ion mass spectrometry (nanoSIMS)
showed rapid distribution within cytoplasmic and nucleolar compartments,
but not the nucleus. In this article, the downstream effects of nucleolar
localization are described. In human colon carcinoma cells, HCT116,
the production rate of 47S rRNA precursor transcripts was dramatically
reduced as an early event after drug treatment. Transcriptional inhibition
of rRNA was followed by a robust G1 arrest, and activation
of apoptotic proteins caspase-8, -9, and -3 and PARP-1 in a p53-independent
manner. Using cell synchronization and flow cytometry, it was determined
that cells treated while in G1 arrest immediately, but
cells treated in S or G2 successfully complete mitosis.
Twenty-four hours after treatment, the majority of cells finally arrest
in G1, but nearly one-third contained highly compacted
DNA; a distinct biological feature that cannot be associated with
mitosis, senescence, or apoptosis. This unique effect mirrored the
efficient condensation of tRNA and DNA in cell-free systems. The combination
of DNA compaction and apoptosis by TriplatinNC treatment conferred
striking activity in platinum-resistant and/or p53 mutant or null
cell lines. Taken together, our results support that the biological
activity of TriplatinNC reflects reduced metabolic deactivation (substitution-inert
compound not reactive to sulfur nucleophiles), high cellular accumulation,
and novel consequences of high-affinity noncovalent DNA binding, producing
a new profile and a further shift in the structure–activity
paradigms for antitumor complexes.
Collapse
Affiliation(s)
- Erica J Peterson
- Department of Chemistry and ‡Massey Cancer Center, Virginia Commonwealth University , Richmond, Virginia 23284, United States
| | | | | | | | | | | | | | | |
Collapse
|
25
|
Malina J, Farrell NP, Brabec V. Substitution-inert trinuclear platinum complexes efficiently condense/aggregate nucleic acids and inhibit enzymatic activity. Angew Chem Int Ed Engl 2014; 53:12812-6. [PMID: 25256921 PMCID: PMC4311996 DOI: 10.1002/anie.201408012] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2014] [Revised: 09/08/2014] [Indexed: 01/02/2023]
Abstract
The trinuclear platinum complexes (TriplatinNC-A [{Pt(NH3 )3 }2 -μ-{trans-Pt(NH3 )2 (NH2 (CH2 )6 NH2 )2 }](6+) , and TriplatinNC [{trans-Pt(NH3 )2 (NH2 (CH2 )6 NH3 (+) )}2 -μ-{trans-Pt(NH3 )2 (NH2 (CH2 )6 NH2 )2 }](8+) ) are biologically active agents that bind to DNA through noncovalent (hydrogen bonding, electrostatic) interactions. Herein, we show that TriplatinNC condenses DNA with a much higher potency than conventional DNA condensing agents. Both complexes induce aggregation of small transfer RNA molecules, and TriplatinNC in particular completely inhibits DNA transcription at lower concentrations than naturally occurring spermine. Topoisomerase I-mediated relaxation of supercoiled DNA was inhibited by TriplatinNC-A and TriplatinNC at concentrations which were 60 times and 250 times lower than that of spermine. The mechanisms for the biological activity of TriplatinNC-A and TriplatinNC may be associated with their ability to condense/aggregate nucleic acids with consequent inhibitory effects on crucial enzymatic activities.
Collapse
Affiliation(s)
- Jaroslav Malina
- Institute of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., Kralovopolska 135, CZ-61265 Brno (Czech Republic)
| | - Nicholas P. Farrell
- Department of Chemistry, Virginia Commonwealth University, Richmond, VA 23284-2006, USA
| | - Viktor Brabec
- Institute of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., Kralovopolska 135, CZ-61265 Brno (Czech Republic)
| |
Collapse
|
26
|
Malina J, Farrell NP, Brabec V. Substitution-Inert Trinuclear Platinum Complexes Efficiently Condense/Aggregate Nucleic Acids and Inhibit Enzymatic Activity. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201408012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|
27
|
Ma ESF, Daniel AG, Farrell NP. Dinuclear platinum complexes containing planar aromatic ligands to enhance stacking interactions with proteins. ChemMedChem 2014; 9:1155-60. [PMID: 24801050 DOI: 10.1002/cmdc.201402052] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2014] [Indexed: 11/09/2022]
Abstract
In an approach to design drugs with higher affinity for π-π stacking and electrostatic interactions with targeted biomolecules, complexes of the type [{cis-Pt(A)2 (L)}2 -μ-{trans-1,4-dach}](NO3 )4 ((A)2 =(NH3 )2 or ethylenediamine (en), L=quinoline (quin) or benzothiazole (bztz), dach=trans-1,4-diaminocyclohexane) were synthesized. The quinoline complex, [{cis-Pt(en)(quin)}2 -μ-(dach)](NO3 )4 (9) was synthesized from the precursor K[PtCl3 (quin)] (1), while the benzothiazole complexes, [{cis-Pt(A)2 (bztz)}2 -μ-(dach)](NO3 )4 ((A)2 =(NH3 )2 (10) and (A)2 =en (11)) were synthesized from the precursors cis-[Pt(A)2 Cl(bztz)] ((A)2 =(NH3 )2 (7) and (A)2 =en (8)). Their interactions with N-acetyltryptophan and a model pentapeptide (N-Ac-WLDSW-OH), modeled on the pentapeptide recognition sequence (FSDLW) of p53-mdm2 interaction, were examined by fluorescence spectroscopy. The dinuclear complexes were found to be significantly stronger at quenching the fluorescence of tryptophan than their mononuclear Pt-based analogues indicating stronger binding. Molecular modeling suggests a "sandwich" mode of binding, and the flexibility of the dinuclear motif can allow the design of more selective and stronger-binding complexes. Based on these results a further prototype, [{Pt(en)(9-EtGua)}2 μ-H2 N(CH2 )6 NH2 ](4+) , incorporating the purine 9-ethylguanine (9-EtG) as a stacking moiety, was prepared which showed good cytotoxicity in A2780 and OsACL tumor cell lines.
Collapse
Affiliation(s)
- Erin S F Ma
- Department of Chemistry, Virginia Commonwealth University, 1001 West Main Street, Richmond, VA 23284-2006 (USA)
| | | | | |
Collapse
|