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Corvaglia V, Ait Mohamed Amar I, Garambois V, Letast S, Garcin A, Gongora C, Del Rio M, Denevault-Sabourin C, Joubert N, Huc I, Pourquier P. Internalization of Foldamer-Based DNA Mimics through a Site-Specific Antibody Conjugate to Target HER2-Positive Cancer Cells. Pharmaceuticals (Basel) 2021; 14:ph14070624. [PMID: 34203395 PMCID: PMC8308903 DOI: 10.3390/ph14070624] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 06/24/2021] [Accepted: 06/25/2021] [Indexed: 11/16/2022] Open
Abstract
Inhibition of protein-DNA interactions represents an attractive strategy to modulate essential cellular functions. We reported the synthesis of unique oligoamide-based foldamers that adopt single helical conformations and mimic the negatively charged phosphate moieties of B-DNA. These mimics alter the activity of DNA interacting enzymes used as targets for cancer treatment, such as DNA topoisomerase I, and they are cytotoxic only in the presence of a transfection agent. The aim of our study was to improve internalization and selective delivery of these highly charged molecules to cancer cells. For this purpose, we synthesized an antibody-drug conjugate (ADC) using a DNA mimic as a payload to specifically target cancer cells overexpressing HER2. We report the bioconjugation of a 16-mer DNA mimic with trastuzumab and its functional validation in breast and ovarian cancer cells expressing various levels of HER2. Binding of the ADC to HER2 increased with the expression of the receptor. The ADC was internalized into cells and was more efficient than trastuzumab at inhibiting their growth in vitro. These results provide proof of concept that it is possible to site-specifically graft high molecular weight payloads such as DNA mimics onto monoclonal antibodies to improve their selective internalization and delivery in cancer cells.
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Affiliation(s)
- Valentina Corvaglia
- Center for Integrated Protein Science, Department of Pharmacy, Ludwig-Maximilians-Universität, 81377 Munich, Germany; (V.C.); (I.H.)
| | - Imène Ait Mohamed Amar
- GICC EA7501, Equipe IMT, Université de Tours, 10 Boulevard Tonnellé, F-37032 Tours, France; (I.A.M.A.); (S.L.); (C.D.-S.); (N.J.)
| | - Véronique Garambois
- Institut de Recherche en Cancérologie de Montpellier, INSERM U1194, Université de Montpellier, F-34298 Montpellier, France; (V.G.); (A.G.); (C.G.); (M.D.R.)
| | - Stéphanie Letast
- GICC EA7501, Equipe IMT, Université de Tours, 10 Boulevard Tonnellé, F-37032 Tours, France; (I.A.M.A.); (S.L.); (C.D.-S.); (N.J.)
| | - Aurélie Garcin
- Institut de Recherche en Cancérologie de Montpellier, INSERM U1194, Université de Montpellier, F-34298 Montpellier, France; (V.G.); (A.G.); (C.G.); (M.D.R.)
| | - Céline Gongora
- Institut de Recherche en Cancérologie de Montpellier, INSERM U1194, Université de Montpellier, F-34298 Montpellier, France; (V.G.); (A.G.); (C.G.); (M.D.R.)
| | - Maguy Del Rio
- Institut de Recherche en Cancérologie de Montpellier, INSERM U1194, Université de Montpellier, F-34298 Montpellier, France; (V.G.); (A.G.); (C.G.); (M.D.R.)
| | - Caroline Denevault-Sabourin
- GICC EA7501, Equipe IMT, Université de Tours, 10 Boulevard Tonnellé, F-37032 Tours, France; (I.A.M.A.); (S.L.); (C.D.-S.); (N.J.)
| | - Nicolas Joubert
- GICC EA7501, Equipe IMT, Université de Tours, 10 Boulevard Tonnellé, F-37032 Tours, France; (I.A.M.A.); (S.L.); (C.D.-S.); (N.J.)
| | - Ivan Huc
- Center for Integrated Protein Science, Department of Pharmacy, Ludwig-Maximilians-Universität, 81377 Munich, Germany; (V.C.); (I.H.)
| | - Philippe Pourquier
- Institut de Recherche en Cancérologie de Montpellier, INSERM U1194, Université de Montpellier, F-34298 Montpellier, France; (V.G.); (A.G.); (C.G.); (M.D.R.)
- Correspondence: ; Tel.: +33-467-613-765; Fax: +33-467-613-787
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Varizhuk AM, Zatsepin TS, Golovin AV, Belyaev ES, Kostyukevich YI, Dedkov VG, Shipulin GA, Shpakovski GV, Aralov AV. Synthesis of oligonucleotides containing novel G-clamp analogue with C8-tethered group in phenoxazine ring: Implication to qPCR detection of the low-copy Kemerovo virus dsRNA. Bioorg Med Chem 2017; 25:3597-3605. [PMID: 28396019 DOI: 10.1016/j.bmc.2017.03.062] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Revised: 03/27/2017] [Accepted: 03/29/2017] [Indexed: 01/20/2023]
Abstract
Nowadays modified oligonucleotides are widely used in diagnostics and as novel therapeutics. Introduction of modified or unnatural residues into oligonucleotides allows fine tuning of their binding properties to complementary nucleic acids and leads to improved stability both in vitro and in vivo. Previously it was demonstrated that insertion of phenoxazine nucleotides with various groups in C9-position into oligonucleotides leads to a significant increase of duplex stability with complementary DNA and RNA. Here the synthesis of a novel G-clamp nucleoside analogue (G8AE-clamp) bearing 2-aminoethyl tether at C8-atom is presented. Introduction of such modified residues into oligonucleotides lead to enhanced specificity of duplex formation towards complementary DNA and RNA targets with increased thermal and 3'-exonuclease stability. According to CD-spectroscopy studies G8AE-clamp does not substantially disrupt helix geometry. Primers containing G8AE-clamp demonstrated superior sensitivity in qPCR detection of dsRNA of Kemerovo virus in comparison to native oligonucleotides.
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Affiliation(s)
- Anna M Varizhuk
- Research and Clinical Center for Physical Chemical Medicine, 119435 Moscow, Russia; Department of Structure-Functional Analysis of Biopolymers, Engelhardt Institute of Molecular Biology, Vavilov Str. 32, Moscow 119991, Russia
| | - Timofei S Zatsepin
- Chemistry Department, Lomonosov Moscow State University, Leninskie Gory, Moscow 119991, Russia; Central Research Institute of Epidemiology, Novogireevskaya 3a, Moscow 111123, Russia; Skolkovo Institute of Science and Technology, 3 Nobel Street, Skolkovo, Moscow Region 143026, Russia.
| | - Andrey V Golovin
- Faculty of Bioengineering and Bioinformatics, Lomonosov Moscow State University, 119234 Moscow, Russia
| | - Evgeny S Belyaev
- Institute for Energy Problems of Chemical Physics of RAS, Leninskij pr. 38/2, Moscow 119334, Russia
| | - Yury I Kostyukevich
- Skolkovo Institute of Science and Technology, 3 Nobel Street, Skolkovo, Moscow Region 143026, Russia
| | - Vladimir G Dedkov
- Central Research Institute of Epidemiology, Novogireevskaya 3a, Moscow 111123, Russia
| | - German A Shipulin
- Central Research Institute of Epidemiology, Novogireevskaya 3a, Moscow 111123, Russia
| | - George V Shpakovski
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya Str. 16/10, Moscow 117997, Russia
| | - Andrey V Aralov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya Str. 16/10, Moscow 117997, Russia.
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Cerqueira L, Azevedo NF, Almeida C, Jardim T, Keevil CW, Vieira MJ. DNA mimics for the rapid identification of microorganisms by fluorescence in situ hybridization (FISH). Int J Mol Sci 2008; 9:1944-60. [PMID: 19325728 PMCID: PMC2635612 DOI: 10.3390/ijms9101944] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2008] [Revised: 09/24/2008] [Accepted: 10/06/2008] [Indexed: 12/23/2022] Open
Abstract
Fluorescence in situ hybridization (FISH) is a well-established technique that is used for a variety of purposes, ranging from pathogen detection in clinical diagnostics to the determination of chromosomal stability in stem cell research. The key step of FISH involves the detection of a nucleic acid region and as such, DNA molecules have typically been used to probe for the sequences of interest. However, since the turn of the century, an increasing number of laboratories have started to move on to the more robust DNA mimics methods, most notably peptide and locked nucleic acids (PNA and LNA). In this review, we will cover the state-of-the-art of the different DNA mimics in regard to their application as efficient markers for the presence of individual microbial cells, and consider their potential advantages and pitfalls. Available PNA probes are then reassessed in terms of sensitivity and specificity using rRNA databases. In addition, we also attempt to predict the applicability of DNA mimics in well-known techniques attempting to detect in situ low number of copies of specific nucleic acid sequences such as catalyzed reporter deposition (CARD) and recognition of individual genes (RING) FISH.
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Affiliation(s)
- Laura Cerqueira
- IBB - Institute for Biotechnology and Bioengineering, Centre of Biological Engineering, Universidade do Minho, Campus de Gualtar 4710-057, Braga, Portugal. E-Mails:
(L. C.);
(C. A.);
(T. J.);
(M. V.)
| | - Nuno F. Azevedo
- IBB - Institute for Biotechnology and Bioengineering, Centre of Biological Engineering, Universidade do Minho, Campus de Gualtar 4710-057, Braga, Portugal. E-Mails:
(L. C.);
(C. A.);
(T. J.);
(M. V.)
- Environmental Healthcare Unit, School of Biological Sciences, University of Southampton, Bassett Crescent East, Southampton SO16 7PX, UK. E-Mail:
(N. A.)
- Author to whom correspondence should be addressed; E-Mail:
; Tel. +351-253605413; Fax: +351-253678986
| | - Carina Almeida
- IBB - Institute for Biotechnology and Bioengineering, Centre of Biological Engineering, Universidade do Minho, Campus de Gualtar 4710-057, Braga, Portugal. E-Mails:
(L. C.);
(C. A.);
(T. J.);
(M. V.)
- Environmental Healthcare Unit, School of Biological Sciences, University of Southampton, Bassett Crescent East, Southampton SO16 7PX, UK. E-Mail:
(N. A.)
| | - Tatiana Jardim
- IBB - Institute for Biotechnology and Bioengineering, Centre of Biological Engineering, Universidade do Minho, Campus de Gualtar 4710-057, Braga, Portugal. E-Mails:
(L. C.);
(C. A.);
(T. J.);
(M. V.)
| | - Charles William Keevil
- Environmental Healthcare Unit, School of Biological Sciences, University of Southampton, Bassett Crescent East, Southampton SO16 7PX, UK. E-Mail:
(N. A.)
| | - Maria J. Vieira
- IBB - Institute for Biotechnology and Bioengineering, Centre of Biological Engineering, Universidade do Minho, Campus de Gualtar 4710-057, Braga, Portugal. E-Mails:
(L. C.);
(C. A.);
(T. J.);
(M. V.)
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