1
|
Fanconi Anaemia-Like Mph1 Helicase Backs up Rad54 and Rad5 to Circumvent Replication Stress-Driven Chromosome Bridges. Genes (Basel) 2018; 9:genes9110558. [PMID: 30453647 PMCID: PMC6266064 DOI: 10.3390/genes9110558] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Revised: 11/13/2018] [Accepted: 11/13/2018] [Indexed: 02/07/2023] Open
Abstract
Homologous recombination (HR) is a preferred mechanism to deal with DNA replication impairments. However, HR synapsis gives rise to joint molecules (JMs) between the nascent sister chromatids, challenging chromosome segregation in anaphase. Joint molecules are resolved by the actions of several structure-selective endonucleases (SSEs), helicases and topoisomerases. Previously, we showed that yeast double mutants for the Mus81-Mms4 and Yen1 SSEs lead to anaphase bridges (ABs) after replication stress. Here, we have studied the role of the Mph1 helicase in preventing these anaphase aberrations. Mph1, the yeast ortholog of Fanconi anaemia protein M (FANCM), is involved in the removal of the D-loop, the first JM to arise in canonical HR. Surprisingly, the absence of Mph1 alone did not increase ABs; rather, it blocked cells in G2. Interestingly, in the search for genetic interactions with functionally related helicases and translocases, we found additive effects on the G2 block and post-G2 aberrations between mph1Δ and knockout mutants for Srs2, Rad54 and Rad5. Based on these interactions, we suggest that Mph1 acts coordinately with these helicases in the non-canonical HR-driven fork regression mechanism to bypass stalled replication forks.
Collapse
|
2
|
Anaissi-Afonso L, Oramas-Royo S, Ayra-Plasencia J, Martín-Rodríguez P, García-Luis J, Lorenzo-Castrillejo I, Fernández-Pérez L, Estévez-Braun A, Machín F. Lawsone, Juglone, and β-Lapachone Derivatives with Enhanced Mitochondrial-Based Toxicity. ACS Chem Biol 2018; 13:1950-1957. [PMID: 29878754 DOI: 10.1021/acschembio.8b00306] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Naphthoquinones are among the most active natural products obtained from plants and microorganisms. Naphthoquinones exert their biological activities through pleiotropic mechanisms that include reactivity against cell nucleophiles, generation of reactive oxygen species (ROS), and inhibition of proteins. Here, we report a mechanistic antiproliferative study performed in the yeast Saccharomyces cerevisiae for several derivatives of three important natural naphthoquinones: lawsone, juglone, and β-lapachone. We have found that (i) the free hydroxyl group of lawsone and juglone modulates toxicity; (ii) lawsone and juglone derivatives differ in their mechanisms of action, with ROS generation being more important for the former; and (iii) a subset of derivatives possess the capability to disrupt mitochondrial function, with β-lapachones being the most potent compounds in this respect. In addition, we have cross-compared yeast results with antibacterial and antitumor activities. We discuss the relationship between the mechanistic findings, the antiproliferative activities, and the physicochemical properties of the naphthoquinones.
Collapse
Affiliation(s)
- Laura Anaissi-Afonso
- Unidad de Investigación, Hospital Universitario Nuestra Señora de La Candelaria, 38010 Tenerife, Spain
- Universidad de La Laguna, 38206 Tenerife, Spain
| | - Sandra Oramas-Royo
- Instituto Universitario de Bio-Orgánica (CIBICAN), Departamento de Química Orgánica, Universidad de La Laguna, 38206 Tenerife, Spain
| | - Jessel Ayra-Plasencia
- Unidad de Investigación, Hospital Universitario Nuestra Señora de La Candelaria, 38010 Tenerife, Spain
- Universidad de La Laguna, 38206 Tenerife, Spain
| | - Patricia Martín-Rodríguez
- Instituto Universitario de Investigaciones Biomédicas y Sanitarias (IUIBS), Departamento de Ciencias Clínicas, BIOPHARM, Universidad de Las Palmas de Gran Canaria, 35001 Las Palmas de Gran Canaria, Spain
| | - Jonay García-Luis
- Unidad de Investigación, Hospital Universitario Nuestra Señora de La Candelaria, 38010 Tenerife, Spain
| | | | - Leandro Fernández-Pérez
- Instituto Universitario de Investigaciones Biomédicas y Sanitarias (IUIBS), Departamento de Ciencias Clínicas, BIOPHARM, Universidad de Las Palmas de Gran Canaria, 35001 Las Palmas de Gran Canaria, Spain
| | - Ana Estévez-Braun
- Instituto Universitario de Bio-Orgánica (CIBICAN), Departamento de Química Orgánica, Universidad de La Laguna, 38206 Tenerife, Spain
| | - Félix Machín
- Unidad de Investigación, Hospital Universitario Nuestra Señora de La Candelaria, 38010 Tenerife, Spain
| |
Collapse
|
3
|
Hueso-Falcón I, Amesty Á, Anaissi-Afonso L, Lorenzo-Castrillejo I, Machín F, Estévez-Braun A. Synthesis and biological evaluation of naphthoquinone-coumarin conjugates as topoisomerase II inhibitors. Bioorg Med Chem Lett 2016; 27:484-489. [PMID: 28040393 DOI: 10.1016/j.bmcl.2016.12.040] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Revised: 12/13/2016] [Accepted: 12/14/2016] [Indexed: 12/23/2022]
Abstract
Based on previous Topoisomerase II docking studies of naphthoquinone derivatives, a series of naphthoquinone-coumarin conjugates was synthesized through a multicomponent reaction from aromatic aldehydes, 4-hydroxycoumarin and 2-hydroxynaphthoquinone. The hybrid structures were evaluated against the α isoform of human topoisomerase II (hTopoIIα), Escherichia coli DNA Gyrase and E. coli Topoisomerase I. All tested compounds inhibited the hTopoIIα-mediated relaxation of negatively supercoiled circular DNA in the low micromolar range. This inhibition was specific since neither DNA Gyrase nor Topoisomerase I were affected. Cleavage assays pointed out that naphthoquinone-coumarins act by catalytically inhibiting hTopoIIα. ATPase assays and molecular docking studies further pointed out that the mode of action is related to the hTopoIIα ATP-binding site.
Collapse
Affiliation(s)
- Idaira Hueso-Falcón
- Instituto Universitario de Bio-Orgánica (CIBICAN), Departamento de Química Orgánica, Universidad de La Laguna, 38206, Spain
| | - Ángel Amesty
- Instituto Universitario de Bio-Orgánica (CIBICAN), Departamento de Química Orgánica, Universidad de La Laguna, 38206, Spain
| | - Laura Anaissi-Afonso
- Unidad de Investigación Hospital Universitario Nuestra Señora de La Candelaria, 38010 Tenerife, Spain
| | | | - Félix Machín
- Unidad de Investigación Hospital Universitario Nuestra Señora de La Candelaria, 38010 Tenerife, Spain.
| | - Ana Estévez-Braun
- Instituto Universitario de Bio-Orgánica (CIBICAN), Departamento de Química Orgánica, Universidad de La Laguna, 38206, Spain.
| |
Collapse
|
4
|
Ramos-Pérez C, Lorenzo-Castrillejo I, Quevedo O, García-Luis J, Matos-Perdomo E, Medina-Coello C, Estévez-Braun A, Machín F. Yeast cytotoxic sensitivity to the antitumour agent β-lapachone depends mainly on oxidative stress and is largely independent of microtubule- or topoisomerase-mediated DNA damage. Biochem Pharmacol 2014; 92:206-19. [DOI: 10.1016/j.bcp.2014.09.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2014] [Revised: 09/09/2014] [Accepted: 09/09/2014] [Indexed: 01/15/2023]
|
5
|
Quintana-Espinoza P, García-Luis J, Amesty A, Martín-Rodríguez P, Lorenzo-Castrillejo I, Ravelo AG, Fernández-Pérez L, Machín F, Estévez-Braun A. Synthesis and study of antiproliferative, antitopoisomerase II, DNA-intercalating and DNA-damaging activities of arylnaphthalimides. Bioorg Med Chem 2013; 21:6484-95. [PMID: 24054489 DOI: 10.1016/j.bmc.2013.08.039] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2013] [Revised: 08/20/2013] [Accepted: 08/21/2013] [Indexed: 11/28/2022]
Abstract
A series of arylnaphthalimides were designed and synthesized to overcome the dose-limiting cytotoxicity of N-acetylated metabolites arising from amonafide, the prototypical antitumour naphthalimide whose biomedical properties have been related to its ability to intercalate the DNA and poison the enzyme Topoisomerase II. Thus, these arylnaphthalimides were first evaluated for their antiproliferative activity against two tumour cell lines and for their antitopoisomerase II in vitro activities, together with their ability to intercalate the DNA in vitro and also through docking modelization. Then, the well-known DNA damage response in Saccharomyces cerevisiae was employed to critically evaluate whether these novel compounds can damage the DNA in vivo. By performing all these assays we conclude that the 5-arylsubstituted naphthalimides not only keep but also improve amonafide's biological activities.
Collapse
Affiliation(s)
- Patricia Quintana-Espinoza
- Instituto Universitario de Bio-Orgánica 'Antonio González', Centro de Investigaciones Biomédicas de Canarias (CIBICAN), Departamento de Química Orgánica, Universidad de La Laguna, Avda. Astrofísico Fco. Sánchez 2, 38206 La Laguna, Tenerife, Spain; Instituto Canario de Investigación del Cáncer (ICIC), Spain(†)
| | | | | | | | | | | | | | | | | |
Collapse
|