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Ren H, Zhang Z, Zhang W, Feng X, Xu L. Prodrug-type antisense oligonucleotides with enhanced nuclease stability and anti-tumour effects. Eur J Pharm Sci 2021; 162:105832. [PMID: 33826934 DOI: 10.1016/j.ejps.2021.105832] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 03/05/2021] [Accepted: 03/31/2021] [Indexed: 11/30/2022]
Abstract
The potential therapeutic and diagnostic applications of oligonucleotides have attracted great attention. However, natural antisense oligonucleotides (ASONs) are susceptible to degradation by intracellular and extracellular nucleases. In this study, we developed a new class of prodrug-type ASONs, which typically bear the hairpin-end conformation with a responsive disulphide switch. The hairpin-end conformation provides protection against nuclease degradation, and, upon stimulation, the molecule converts into the native antisense structure upon entering a tumour microenvironment due to the high concentration of glutathione. The structure-stability relationship analysis indicated that the location, size and composition of the hairpin structure affect the anti-degradation capability. One optimal prodrug-type ASON, O2, exhibited a higher stability against nucleases in serum-containing medium as well as an increased anti-tumour activity both in vitro and in vivo, compared to the linear control. This work presents a new strategy for the design of ASON drugs with novel structures and offers insight on the stability and biological efficacy of general nucleic acid-based therapeutics.
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Affiliation(s)
- Hongqian Ren
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, 27 Taiping Road, Beijing 100850, China
| | - Zhe Zhang
- China Medical University, School of Pharmacy, Shenyang 110122, China
| | - Wei Zhang
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, 27 Taiping Road, Beijing 100850, China
| | - Xuesong Feng
- China Medical University, School of Pharmacy, Shenyang 110122, China.
| | - Liang Xu
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, 27 Taiping Road, Beijing 100850, China.
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Kvach MV, Stepanova IA, Prokhorenko IA, Stupak AP, Bolibrukh DA, Korshun VA, Shmanai VV. Practical Synthesis of Isomerically Pure 5- and 6-Carboxytetramethylrhodamines, Useful Dyes for DNA Probes. Bioconjug Chem 2009; 20:1673-82. [DOI: 10.1021/bc900037b] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Maksim V. Kvach
- Institute of Physical Organic Chemistry, Surganova 13, 220072 Minsk, Belarus, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Miklukho-Maklaya 16/10, 117997 Moscow, Russia, Institute of Physics, Nezavisimosti av. 70, 220072 Minsk, Belarus, and Institute of Bioorganic Chemistry, Kuprevicha 5/2, 220141, Minsk, Belarus
| | - Irina A. Stepanova
- Institute of Physical Organic Chemistry, Surganova 13, 220072 Minsk, Belarus, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Miklukho-Maklaya 16/10, 117997 Moscow, Russia, Institute of Physics, Nezavisimosti av. 70, 220072 Minsk, Belarus, and Institute of Bioorganic Chemistry, Kuprevicha 5/2, 220141, Minsk, Belarus
| | - Igor A. Prokhorenko
- Institute of Physical Organic Chemistry, Surganova 13, 220072 Minsk, Belarus, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Miklukho-Maklaya 16/10, 117997 Moscow, Russia, Institute of Physics, Nezavisimosti av. 70, 220072 Minsk, Belarus, and Institute of Bioorganic Chemistry, Kuprevicha 5/2, 220141, Minsk, Belarus
| | - Aleksander P. Stupak
- Institute of Physical Organic Chemistry, Surganova 13, 220072 Minsk, Belarus, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Miklukho-Maklaya 16/10, 117997 Moscow, Russia, Institute of Physics, Nezavisimosti av. 70, 220072 Minsk, Belarus, and Institute of Bioorganic Chemistry, Kuprevicha 5/2, 220141, Minsk, Belarus
| | - Dmitry A. Bolibrukh
- Institute of Physical Organic Chemistry, Surganova 13, 220072 Minsk, Belarus, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Miklukho-Maklaya 16/10, 117997 Moscow, Russia, Institute of Physics, Nezavisimosti av. 70, 220072 Minsk, Belarus, and Institute of Bioorganic Chemistry, Kuprevicha 5/2, 220141, Minsk, Belarus
| | - Vladimir A. Korshun
- Institute of Physical Organic Chemistry, Surganova 13, 220072 Minsk, Belarus, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Miklukho-Maklaya 16/10, 117997 Moscow, Russia, Institute of Physics, Nezavisimosti av. 70, 220072 Minsk, Belarus, and Institute of Bioorganic Chemistry, Kuprevicha 5/2, 220141, Minsk, Belarus
| | - Vadim V. Shmanai
- Institute of Physical Organic Chemistry, Surganova 13, 220072 Minsk, Belarus, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Miklukho-Maklaya 16/10, 117997 Moscow, Russia, Institute of Physics, Nezavisimosti av. 70, 220072 Minsk, Belarus, and Institute of Bioorganic Chemistry, Kuprevicha 5/2, 220141, Minsk, Belarus
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Münch U, Chen L, Bayly SF, Torrence PF. Probing the activation site of ribonuclease L with new N6-substituted 2',5'-adenylate trimers. Bioorg Med Chem 2003; 11:2041-9. [PMID: 12670655 DOI: 10.1016/s0968-0896(03)00060-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
2-5A trimer [5'-monophosphoryladenylyl(2'-5')adenylyl(2'-5')adenosine] activates RNase L. While the 5'-terminal and 2'-terminal adenosine N(6)-amino groups play a key role in binding to and activation of RNase L, the exocyclic amino function of the second adenylate (from the 5'-terminus) plays a relatively minor role in 2-5A's biological activity. To probe the available space proximal to the amino function of the central adenylate of 2-5A trimer during binding to RNase L, a variety of substituents were placed at that position. To accomplish this, the convertible building block 5'-O-dimethoxytrityl-3'-O-(tert-butyldimethylsilyl)-6-(2,4-dinitrophenyl)thioinosine 2'-(2-cyanoethylN,N-diisopropylphosphoramidite) was prepared as a synthon to introduce 6-(2,4-dinitrophenyl)thioinosine into the middle position of the 2-5A trimer during automated synthesis. Post-synthetic treatment with aqueous amines transformed the (2,4-dinitrophenyl)thioinosine into N(6)-substituted adenosines. Assays of these modified trimers for their ability to bind and activate RNase L showed that activation activity could be retained, albeit with some sacrifice compared to unmodified p5'A2'p5'A2'p5'A. Thus, the spatial domain about this N(6)-amino function could be available for modifications to enhance the biological potency of 2-5A analogues and to ligate 2-5A to targeting vehicles such as antisense molecules.
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Affiliation(s)
- Ursula Münch
- Section on Biomedical Chemistry, Laboratory of Medicinal Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892-0805, USA
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Verheijen JC, Chen L, Bayly SF, Torrence PF, van der Marel GA, van Boom JH. Synthesis and RNAse L binding and activation of a 2-5A-(5')-DNA-(3')-PNA chimera, a novel potential antisense molecule. NUCLEOSIDES, NUCLEOTIDES & NUCLEIC ACIDS 2000; 19:1821-30. [PMID: 11200276 DOI: 10.1080/15257770008045463] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Fully automated solid-phase synthesis gave access to a hybrid in which 5'-phosphorylated-2'-5'-linked oligoadenylate (2-5A) is connected to the 5'-terminus of DNA which, in turn, is linked at the 3'-end to PNA [2-5A-(5')-DNA-(3')-PNA chimera]. This novel antisense molecule retains full RNase L activation potency while suffering only a slight reduction in binding affinity.
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Affiliation(s)
- J C Verheijen
- Leiden Institute of Chemistry, Gorlaeus Laboratories, The Netherlands
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