1
|
Chatterjee S, Xiao L, Zhong W, Feng S, Kool ET. Selective Arylation of RNA 2'-OH Groups via S NAr Reaction with Trialkylammonium Heterocycles. Angew Chem Int Ed Engl 2024; 63:e202403496. [PMID: 38625814 DOI: 10.1002/anie.202403496] [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: 02/19/2024] [Revised: 04/11/2024] [Accepted: 04/15/2024] [Indexed: 04/18/2024]
Abstract
Small-molecule reactions at the 2'-OH groups of RNA enable useful applications for transcriptome technology and biology. To date, all reactions have involved carbonyl acylation and mechanistically related sulfonylation, limiting the types of modifications and properties that can be achieved. Here we report that electron-deficient heteroaryl species selectively react with 2'-OH groups of RNA in water via SNAr chemistry. In particular, trialkyl-ammonium (TAA)-activated aromatic heterocycles, prepared in one step from aryl chloride precursors, give high conversions to aryl ether adducts with RNAs in aqueous buffer in ~2-3 h. Remarkably, a TAA triazine previously used only for reaction with carboxylic acids, shows unprecedented selectivity for RNA over water, reacting rapidly with 2'-OH groups while exhibiting a half-life in water of >10 days. We further show that a triazine aryl species can be used as a probe at trace-level yields to map RNA structure in vitro. Finally, we prepare a number of functionalized trialkylammonium triazine reagents and show that they can be used to covalently label RNA efficiently for use in vitro and in living cells. This direct arylation chemistry offers a simple and distinct structural scaffold for post-synthetic RNA modification, with potential utility in multiple applications in transcriptome research.
Collapse
Affiliation(s)
| | - Lu Xiao
- Department of Chemistry, Stanford University, Stanford, CA 94305, USA
| | - Wenrui Zhong
- Department of Chemistry, Stanford University, Stanford, CA 94305, USA
| | - Sheng Feng
- Department of Chemistry, Stanford University, Stanford, CA 94305, USA
| | - Eric T Kool
- Department of Chemistry, Stanford University, Stanford, CA 94305, USA
| |
Collapse
|
2
|
Westarp S, Benckendorff CMM, Motter J, Röhrs V, Sanghvi YS, Neubauer P, Kurreck J, Kurreck A, Miller GJ. Biocatalytic Nucleobase Diversification of 4'-Thionucleosides and Application of Derived 5-Ethynyl-4'-thiouridine for RNA Synthesis Detection. Angew Chem Int Ed Engl 2024:e202405040. [PMID: 38785103 DOI: 10.1002/anie.202405040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 05/22/2024] [Accepted: 05/23/2024] [Indexed: 05/25/2024]
Abstract
Nucleoside and nucleotide analogues have proven to be transformative in the treatment of viral infections and cancer. One branch of structural modification to deliver new nucleoside analogue classes explores replacement of canonical ribose oxygen with a sulfur atom. Whilst biological activity of such analogues has been shown in some cases, widespread exploration of this compound class is hitherto hampered by the lack of a straightforward and universal nucleobase diversification strategy. Herein, we present a synergistic platform enabling both biocatalytic nucleobase diversification from 4'-thiouridine in a one-pot process, and chemical functionalization to access new entities. This methodology delivers entry across pyrimidine and purine 4'-thionucleosides, paving a way for wider synthetic and biological exploration. We exemplify our approach by enzymatic synthesis of 5-iodo-4'-thiouridine on multi-milligram scale and from here switch to complete chemical synthesis of a novel nucleoside analogue probe, 5-ethynyl-4'-thiouridine. Finally, we demonstrate the utility of this probe to monitor RNA synthesis in proliferating HeLa cells, validating its capability as a new metabolic RNA labelling tool.
Collapse
Affiliation(s)
- Sarah Westarp
- Bioprocess Engineering, Institute of Biotechnology, Technische Universität Berlin, Ackerstraße 76 ACK24, D-13355, Berlin, Germany
- BioNukleo GmbH, Ackerstrasse 76, D-13355, Berlin, Germany
| | - Caecilie M M Benckendorff
- Centre for Glycoscience and School of Chemical and Physical Sciences, Keele University, Keele, Staffordshire, ST5 5BG, UK
| | - Jonas Motter
- Bioprocess Engineering, Institute of Biotechnology, Technische Universität Berlin, Ackerstraße 76 ACK24, D-13355, Berlin, Germany
| | - Viola Röhrs
- Applied Biochemistry, Institute of Biotechnology, Technische Universität Berlin, Gustav-Meyer-Allee 25, TIB 4/3-2, D-13355, Berlin, Germany
| | - Yogesh S Sanghvi
- Rasayan Inc., 2802 Crystal Ridge Road, Encinitas, California, 92024, USA
| | - Peter Neubauer
- Bioprocess Engineering, Institute of Biotechnology, Technische Universität Berlin, Ackerstraße 76 ACK24, D-13355, Berlin, Germany
| | - Jens Kurreck
- Applied Biochemistry, Institute of Biotechnology, Technische Universität Berlin, Gustav-Meyer-Allee 25, TIB 4/3-2, D-13355, Berlin, Germany
| | - Anke Kurreck
- Bioprocess Engineering, Institute of Biotechnology, Technische Universität Berlin, Ackerstraße 76 ACK24, D-13355, Berlin, Germany
- BioNukleo GmbH, Ackerstrasse 76, D-13355, Berlin, Germany
| | - Gavin J Miller
- Centre for Glycoscience and School of Chemical and Physical Sciences, Keele University, Keele, Staffordshire, ST5 5BG, UK
| |
Collapse
|
3
|
Brunderová M, Havlíček V, Matyašovský J, Pohl R, Poštová Slavětínská L, Krömer M, Hocek M. Expedient production of site specifically nucleobase-labelled or hypermodified RNA with engineered thermophilic DNA polymerases. Nat Commun 2024; 15:3054. [PMID: 38594306 PMCID: PMC11004144 DOI: 10.1038/s41467-024-47444-9] [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: 10/28/2023] [Accepted: 03/26/2024] [Indexed: 04/11/2024] Open
Abstract
Innovative approaches to controlled nucleobase-modified RNA synthesis are urgently needed to support RNA biology exploration and to synthesize potential RNA therapeutics. Here we present a strategy for enzymatic construction of nucleobase-modified RNA based on primer-dependent engineered thermophilic DNA polymerases - SFM4-3 and TGK. We demonstrate introduction of one or several different base-modified nucleotides in one strand including hypermodified RNA containing all four modified nucleotides bearing four different substituents, as well as strategy for primer segment removal. We also show facile site-specific or segmented introduction of fluorophores or other functional groups at defined positions in variety of RNA molecules, including structured or long mRNA. Intriguing translation efficacy of single-site modified mRNAs underscores the necessity to study isolated modifications placed at designer positions to disentangle their biological effects and enable development of improved mRNA therapeutics. Our toolbox paves the way for more precise dissecting RNA structures and functions, as well as for construction of diverse types of base-functionalized RNA for therapeutic applications and diagnostics.
Collapse
Affiliation(s)
- Mária Brunderová
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo nam. 2, CZ-16000, Prague, 6, Czech Republic
- Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 8, CZ-12843, Prague, 2, Czech Republic
- MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge Biomedical Campus, Cambridge, UK
| | - Vojtěch Havlíček
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo nam. 2, CZ-16000, Prague, 6, Czech Republic
- Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 8, CZ-12843, Prague, 2, Czech Republic
| | - Ján Matyašovský
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo nam. 2, CZ-16000, Prague, 6, Czech Republic
| | - Radek Pohl
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo nam. 2, CZ-16000, Prague, 6, Czech Republic
| | - Lenka Poštová Slavětínská
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo nam. 2, CZ-16000, Prague, 6, Czech Republic
| | - Matouš Krömer
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo nam. 2, CZ-16000, Prague, 6, Czech Republic.
- The Rosalind Franklin Institute, Harwell Campus, Didcot, Oxfordshire, UK.
| | - Michal Hocek
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo nam. 2, CZ-16000, Prague, 6, Czech Republic.
- Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 8, CZ-12843, Prague, 2, Czech Republic.
| |
Collapse
|
4
|
Shioi R, Xiao L, Kool ET. Aqueous Activation of RNA 2'-OH for Conjugation with Amines and Thiols. Bioconjug Chem 2024; 35:43-50. [PMID: 38150592 DOI: 10.1021/acs.bioconjchem.3c00370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2023]
Abstract
Strategies for covalent modification of RNA are important for enabling biological studies of the biopolymer and for enhancing properties of therapeutic RNAs. While a number of electrophiles have been observed to react with RNA, few methods exist for reaction with nucleophiles. Here, we describe new reagents that enable efficient conjugation of amines and other nucleophiles to unmodified RNA postsynthetically via transient activation of 2'-OH groups. Reaction of single-stranded RNA in aqueous solution with phenolic imidazolecarbamates at room temperature results in stoichiometric and superstoichiometric yields of imidazolecarbonyl group adducts, and control experiments with DNA confirm the site of reaction in RNA as 2'-OH. Subsequent incubation of imidazolecarbonyl-activated RNAs with primary or selected secondary amines results in rapid, high-yield conversion to carbamate conjugates. The activation and subsequent nucleophile reaction can be carried out either stepwise or in a one-pot reaction. Thiols and phenol species react to yield (thio)carbonate adducts, and amino acid sidechains also react, suggesting possible future utility for protein conjugates and analysis of protein-RNA interactions. The activation method is found to be selective to unpaired regions of RNA, and can be directed to a specific location in a strand by use of a loop-inducing helper DNA. The results establish novel and efficient reagents and methods for modifying RNA postsynthetically with nucleophiles.
Collapse
Affiliation(s)
- Ryuta Shioi
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Lu Xiao
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Eric T Kool
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
| |
Collapse
|
5
|
Esteve F, Rahmatova F, Lehn JM. Supramolecular multivalency effects enhance imine formation in aqueous medium allowing for dynamic modification of enzymatic activity. Chem Sci 2023; 14:10249-10257. [PMID: 37772124 PMCID: PMC10530293 DOI: 10.1039/d3sc04128j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 09/05/2023] [Indexed: 09/30/2023] Open
Abstract
Imine formation under physiological conditions represents a challenging reaction due to the strong propensity of aldimines to be hydrolyzed. Herein we disclose the remarkable effect of supramolecular multivalency on increasing imine stability. A family of reactive aldehydes was synthesized bearing supramolecularly-active sites within their structure. The imine formation activity for such aldehydes was evaluated and compared with model aldehydes. The reaction of the best-performing species - containing two carboxylate groups-with a set of amines showed a significant decrease in imine yields as the degree of supramolecular multivalency between sidechains decreased. The reversible conjugation of amino acid derivatives and small peptides was also assayed, with excellent selectivities for the imine formation at the Nα position even in substrates containing competing sites. Preliminary results on protein bioconjugation revealed that a model enzyme could be dynamically inhibited upon reaction with the aldehyde, with its native activity being recovered by displacing the imine bonds with a suitable chemical effector (i.e., acylhydrazide).
Collapse
Affiliation(s)
- Ferran Esteve
- Laboratoire de Chimie Supramoléculaire, Institut de Science et d'Ingénierie Supramoléculaires (ISIS), Université de Strasbourg 8 allée Gaspard Monge 67000 Strasbourg France
| | - Fidan Rahmatova
- Laboratoire de Chimie Supramoléculaire, Institut de Science et d'Ingénierie Supramoléculaires (ISIS), Université de Strasbourg 8 allée Gaspard Monge 67000 Strasbourg France
| | - Jean-Marie Lehn
- Laboratoire de Chimie Supramoléculaire, Institut de Science et d'Ingénierie Supramoléculaires (ISIS), Université de Strasbourg 8 allée Gaspard Monge 67000 Strasbourg France
| |
Collapse
|
6
|
Brunderová M, Krömer M, Vlková M, Hocek M. Chloroacetamide-Modified Nucleotide and RNA for Bioconjugations and Cross-Linking with RNA-Binding Proteins. Angew Chem Int Ed Engl 2023; 62:e202213764. [PMID: 36533569 PMCID: PMC10107093 DOI: 10.1002/anie.202213764] [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: 09/18/2022] [Revised: 12/04/2022] [Accepted: 12/19/2022] [Indexed: 12/23/2022]
Abstract
Reactive RNA probes are useful for studying and identifying RNA-binding proteins. To that end, we designed and synthesized chloroacetamide-linked 7-deaza-ATP which was a good substrate for T7 RNA polymerase in in vitro transcription assay to synthesize reactive RNA probes bearing one or several reactive modifications. Modified RNA probes reacted with thiol-containing molecules as well as with cysteine- or histidine-containing peptides to form stable covalent products. They also reacted selectively with RNA-binding proteins to form cross-linked conjugates in high conversions thanks to proximity effect. Our modified nucleotide and RNA probes are promising tools for applications in RNA (bio)conjugations or RNA proteomics.
Collapse
Affiliation(s)
- Mária Brunderová
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 2, 16000, Prague 6, Czech Republic.,Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 8, 12843, Prague 2, Czech Republic
| | - Matouš Krömer
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 2, 16000, Prague 6, Czech Republic.,Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 8, 12843, Prague 2, Czech Republic
| | - Marta Vlková
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 2, 16000, Prague 6, Czech Republic
| | - Michal Hocek
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 2, 16000, Prague 6, Czech Republic.,Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 8, 12843, Prague 2, Czech Republic
| |
Collapse
|
7
|
Lakshman MK. Base Modifications of Nucleosides via the Use of Peptide-Coupling Agents, and Beyond. CHEM REC 2023; 23:e202200182. [PMID: 36166699 DOI: 10.1002/tcr.202200182] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Revised: 08/26/2022] [Indexed: 01/24/2023]
Abstract
Several naturally occurring purine and pyrimidine nucleosides contain an amide linkage as part of the heterocyclic aglycone. Enolization of the amide and conversion to leaving groups at the amide carbon atom permits base modification by addition-elimination types of processes. Although a number of methods have been developed over the years for accomplishing such conversions, the present Personal Account describes efforts from the Lakshman laboratories. Facile activation of the amido groups in nucleobases can be achieved with peptide-coupling agents. Subsequent reaction with nucleophiles then accomplishes the base modifications. In many cases, the activation and displacement steps can be done as two-step, one-pot processes, whereas in other cases, discrete storable activated nucleosides can be isolated for subsequent displacement reactions. Using such an approach a wide range of nucleoside base modifications is readily achievable. In many instances, mechanistic investigations have been conducted so as to understand the activation process.
Collapse
Affiliation(s)
- Mahesh K Lakshman
- Department of Chemistry and Biochemistry, The City College of New York, 160 Convent Avenue, New York, NY 10031, USA.,The Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, 365 Fifth Avenue, New York, NY 10016, USA
| |
Collapse
|
8
|
Kang D, Wahl C, Kim J. Synthesis of push-pull-activated ynol ethers and their evaluation in the bioorthogonal hydroamination reaction. Org Biomol Chem 2022; 20:9217-9221. [PMID: 36367436 PMCID: PMC9769999 DOI: 10.1039/d2ob01917e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2023]
Abstract
A new class of push-pull-activated alkynes featuring di- and trifluorinated ynol ethers was synthesized. The difluorinated ynol ether exhibited an optimal balance of stability and reactivity, displaying a substantially improved half-life in the presence of aqueous thiols over the previously reported 1-haloalkyne analogs while reacting just as fast in the hydroamination reaction with N,N-diethylhydroxylamine. The trifluorinated ynol ether reacted significantly faster, exhibiting a second order rate constant of 0.56 M-1 s-1 in methanol, but it proved too unstable toward thiols. These fluorinated ynol ethers further demonstrate the importance of the hyperconjugation-rehybridization effect in activating alkynes and demonstrate how substituent effects can both activate and stabilize alkynes for bioorthogonal reactivity.
Collapse
Affiliation(s)
- Dahye Kang
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, Massachusetts 02215, USA.
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, Massachusetts 02115, USA
| | - Conrad Wahl
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, Massachusetts 02215, USA.
| | - Justin Kim
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, Massachusetts 02215, USA.
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, Massachusetts 02115, USA
| |
Collapse
|
9
|
Zhao G, Li Z, Zhang R, Zhou L, Zhao H, Jiang H. Tetrazine bioorthogonal chemistry derived in vivo imaging. Front Mol Biosci 2022; 9:1055823. [PMID: 36465558 PMCID: PMC9709424 DOI: 10.3389/fmolb.2022.1055823] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Accepted: 10/26/2022] [Indexed: 09/02/2023] Open
Abstract
Bioorthogonal chemistry represents plenty of highly efficient and biocompatible reactions that proceed selectively and rapidly in biological situations without unexpected side reactions towards miscellaneous endogenous functional groups. Arise from the strict demands of physiological reactions, bioorthogonal chemical reactions are natively selective transformations that are rarely found in biological environments. Bioorthogonal chemistry has long been applied to tracking and real-time imaging of biomolecules in their physiological environments. Thereinto, tetrazine bioorthogonal reactions are particularly important and have increasing applications in these fields owing to their unique properties of easily controlled fluorescence or radiation off-on mechanism, which greatly facilitate the tracking of real signals without been disturbed by background. In this mini review, tetrazine bioorthogonal chemistry for in vivo imaging applications will be attentively appraised to raise some guidelines for prior tetrazine bioorthogonal chemical studies.
Collapse
Affiliation(s)
- Gaoxiang Zhao
- The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, China
- Cancer Institute, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Zhutie Li
- China United Test and Evaluation (Qingdao) Co. Ltd., Qingdao, China
| | - Renshuai Zhang
- The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, China
- Cancer Institute, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Liman Zhou
- Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commission, Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, School of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning, China
| | - Haibo Zhao
- The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, China
- Department of Sports Medicine, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Hongfei Jiang
- The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, China
- Cancer Institute, Affiliated Hospital of Qingdao University, Qingdao, China
| |
Collapse
|
10
|
Moreno S, Ramos Pittol JM, Hartl M, Micura R. Robust synthesis of 2'-azido modified RNA from 2'-amino precursors by diazotransfer reaction. Org Biomol Chem 2022; 20:7845-7850. [PMID: 36172831 DOI: 10.1039/d2ob01560a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Azides are versatile bioorthogonal reporter moieties that are commonly used for site-specific labeling and functionalization of RNA to probe its biology. The preparation of azido modified nucleic acids by solid-phase synthesis is problematic due to the inherent reactivity of P(III) species with azides according to the Staudinger reaction. Various strategies have been developed to bypass this limitation and are often time-consuming, low-yielding and labor-intensive. In particular, the synthesis of RNA with internal 2'-azido modifications is restricted to a single approach that employs P(V) chemistry instead of the widely used P(III) phosphoramidite chemistry. To fill this methodological gap, we present a novel convenient path toward 2'-azido RNA from readily accessible 2'-amino RNA through treatment with the diazotizing reagent fluorosulfuryl azide (FSO2N3). A diazotransfer reaction was established for oligoribonucleotides of different lengths and secondary structures. The robustness of the approach was further demonstrated for RNAs containing multiple 2'-azido moieties and for RNAs containing other sensitive modifications such as thiouridine or methylated nucleobases with a positive charge. The synthetic ease of generating 2'-azido RNA will pave the way for biotechnological applications, in particular for siRNA technologies and for referencing the growing number of RNA metabolic labeling approaches that rely on 2'-azido nucleosides.
Collapse
Affiliation(s)
- Sarah Moreno
- Institute of Organic Chemistry, Center for Molecular Biosciences Innsbruck, University of Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria.
| | - José M Ramos Pittol
- Institute of Biochemistry, Center for Chemistry and Biomedicine (CCB) Innsbruck, University of Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria
| | - Markus Hartl
- Institute of Biochemistry, Center for Chemistry and Biomedicine (CCB) Innsbruck, University of Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria
| | - Ronald Micura
- Institute of Organic Chemistry, Center for Molecular Biosciences Innsbruck, University of Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria.
| |
Collapse
|
11
|
Kang D, Lee S, Kim J. Bioorthogonal Click and Release: A General, Rapid, Chemically Revertible Bioconjugation Strategy Employing Enamine N-oxides. Chem 2022; 8:2260-2277. [PMID: 36176744 PMCID: PMC9514142 DOI: 10.1016/j.chempr.2022.05.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A chemically revertible bioconjugation strategy featuring a new bioorthogonal dissociative reaction employing enamine N-oxides is described. The reaction is rapid, complete, directional, traceless, and displays a broad substrate scope. Reaction rates for cleavage of fluorophores from proteins are on the order of 82 M-1s-1, and the reaction is relatively insensitive to common aqueous buffers and pHs between 4 and 10. Diboron reagents with bidentate and tridentate ligands also effectively reduce the enamine N-oxide to induce dissociation and compound release. This reaction can be paired with the corresponding bioorthogonal hydroamination reaction to afford an integrated system of bioorthogonal click and release via an enamine N-oxide linchpin with a minimal footprint. The tandem associative and dissociative reactions are useful for the transient attachment of proteins and small molecules with access to a discrete, isolable intermediate. We demonstrate the effectiveness of this revertible transformation on cells using chemically cleavable antibody-drug conjugates.
Collapse
Affiliation(s)
- Dahye Kang
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, Massachusetts 02215, United States
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Sanghyeon Lee
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, Massachusetts 02215, United States
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Justin Kim
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, Massachusetts 02215, United States
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, Massachusetts 02115, United States
- Lead Contact
| |
Collapse
|
12
|
Maroju PA, Ganesan R, Ray Dutta J. Boronic acid chemistry for fluorescence-based quantitative DNA sensing. Chem Commun (Camb) 2022; 58:7936-7939. [PMID: 35748662 DOI: 10.1039/d2cc02584a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Contrary to the long-standing opinion of boronic acids being typically reactive with 1,2- and 1,3-diols and hence not suitable for quantitative sensing of DNA containing only a mono-ol unit, this proof-of-concept study has successfully shown the feasibility to quantitatively detect DNA in the concentration range of 5 to 50 nM plausibly through boronic acid-mediated bridging of two DNA double helices via the 3' hydroxy groups, which opens up new avenues in the realm of oligonucleotide biochemistry.
Collapse
Affiliation(s)
- Pranay Amruth Maroju
- Department of Biological Sciences, Birla Institute of Technology and Science (BITS), Pilani, Hyderabad Campus, Jawahar Nagar, Kapra Mandal, Medchal District, Hyderabad, Telangana, 500078, India.
| | - Ramakrishnan Ganesan
- Department of Chemistry, Birla Institute of Technology and Science (BITS), Pilani, Hyderabad Campus, Jawahar Nagar, Kapra Mandal, Medchal District, Hyderabad, Telangana, 500078, India.
| | - Jayati Ray Dutta
- Department of Biological Sciences, Birla Institute of Technology and Science (BITS), Pilani, Hyderabad Campus, Jawahar Nagar, Kapra Mandal, Medchal District, Hyderabad, Telangana, 500078, India.
| |
Collapse
|
13
|
Loehr MO, Luedtke NW. A Kinetic and Fluorogenic Enhancement Strategy for Labeling of Nucleic Acids. Angew Chem Int Ed Engl 2022; 61:e202112931. [PMID: 35139255 DOI: 10.1002/anie.202112931] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Indexed: 12/21/2022]
Abstract
Chemical modification of nucleic acids in living cells can be sterically hindered by tight packing of bioorthogonal functional groups in chromatin. To address this limitation, we report here a dual enhancement strategy for nucleic acid-templated reactions utilizing a fluorogenic intercalating agent capable of undergoing inverse electron-demand Diels-Alder (IEDDA) reactions with DNA containing 5-vinyl-2'-deoxyuridine (VdU) or RNA containing 5-vinyl-uridine (VU). Reversible high-affinity intercalation of a novel acridine-tetrazine conjugate "PINK" (KD =5±1 μM) increases the reaction rate of tetrazine-alkene IEDDA on duplex DNA by 60 000-fold (590 M-1 s-1 ) as compared to the non-templated reaction. At the same time, loss of tetrazine-acridine fluorescence quenching renders the reaction highly fluorogenic and detectable under no-wash conditions. This strategy enables live-cell dynamic imaging of acridine-modified nucleic acids in dividing cells.
Collapse
Affiliation(s)
- Morten O Loehr
- Department of Chemistry, McGill University, 801 Sherbrooke St. West, Montréal, Québec, H3A 0B8, Canada
| | - Nathan W Luedtke
- Department of Chemistry, McGill University, 801 Sherbrooke St. West, Montréal, Québec, H3A 0B8, Canada.,Department of Pharmacology and Therapeutics, McGill University, 3655 Prom. Sir William Osler, Montréal, Québec H3G 1Y6, Canada
| |
Collapse
|
14
|
LINC00339: An emerging major player in cancer and metabolic diseases. Biomed Pharmacother 2022; 149:112788. [PMID: 35276468 DOI: 10.1016/j.biopha.2022.112788] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 02/21/2022] [Accepted: 03/02/2022] [Indexed: 11/20/2022] Open
Abstract
Long noncoding RNAs (lncRNAs) are a series of RNA molecules without ability to code proteins. LncRNAs have emerged as significant players in almost all aspects of gene function and regulation and play crucial roles in many human diseases. Particular lncRNAs are deemed to be promising molecular biomarkers used for diagnosing diseases and determining patient prognoses and treatment efficacies. LINC00339 is a new budding lncRNA and much of evidence shows that it is abnormally expressed in multifarious diseases, including endometriosis, cardiomyocyte apoptosis, osteoporosis, digestive-system tumors, respiratory-system tumors, nervous-system tumors, and diseases involving other systems. Additionally, LINC00339 is remarkably associated with different clinical features, such as tumor size, TNM stage, and pathological grade. LINC00339 expression has been proved to upregulate in the aforementioned diseases and has been identified to promote disease occurrence and development. It is also reported that LINC00339 is associated with various cellular events, such as tumor cell proliferation, motility and invasiveness, the expression has also been proved that it is closely related to clinical symptoms in cancer patients. This review summarizes the relationships among expression levels, biological features, clinical symptoms, and regulatory mechanisms of LINC00339 in several diseases and discusses the clinical applications of LINC00339 as a cancer diagnostic, prognostic and treatment efficacy biomarker.
Collapse
|
15
|
Loehr MO, Luedtke NW. A Kinetic and Fluorogenic Enhancement Strategy for Labeling of Nucleic Acids. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202112931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Morten O. Loehr
- Department of Chemistry McGill University 801 Sherbrooke St. West Montréal Québec, H3A 0B8 Canada
| | - Nathan W. Luedtke
- Department of Chemistry McGill University 801 Sherbrooke St. West Montréal Québec, H3A 0B8 Canada
- Department of Pharmacology and Therapeutics McGill University 3655 Prom. Sir William Osler Montréal Québec H3G 1Y6 Canada
| |
Collapse
|
16
|
Heiss TK, Dorn RS, Prescher JA. Bioorthogonal Reactions of Triarylphosphines and Related Analogues. Chem Rev 2021; 121:6802-6849. [PMID: 34101453 PMCID: PMC10064493 DOI: 10.1021/acs.chemrev.1c00014] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Bioorthogonal phosphines were introduced in the context of the Staudinger ligation over 20 years ago. Since that time, phosphine probes have been used in myriad applications to tag azide-functionalized biomolecules. The Staudinger ligation also paved the way for the development of other phosphorus-based chemistries, many of which are widely employed in biological experiments. Several reviews have highlighted early achievements in the design and application of bioorthogonal phosphines. This review summarizes more recent advances in the field. We discuss innovations in classic Staudinger-like transformations that have enabled new biological pursuits. We also highlight relative newcomers to the bioorthogonal stage, including the cyclopropenone-phosphine ligation and the phospha-Michael reaction. The review concludes with chemoselective reactions involving phosphite and phosphonite ligations. For each transformation, we describe the overall mechanism and scope. We also showcase efforts to fine-tune the reagents for specific functions. We further describe recent applications of the chemistries in biological settings. Collectively, these examples underscore the versatility and breadth of bioorthogonal phosphine reagents.
Collapse
|
17
|
Kang D, Kim J. Bioorthogonal Retro-Cope Elimination Reaction of N, N-Dialkylhydroxylamines and Strained Alkynes. J Am Chem Soc 2021; 143:5616-5621. [PMID: 33829777 DOI: 10.1021/jacs.1c00885] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
A bioorthogonal reaction between N,N-dialkylhydroxylamines and cyclooctynes is described. This reaction features a highly regioselective transformation between small, easily functionalizable reaction components with second-order rate constants reaching 84 M-1 s-1. The reaction is orthogonal to the inverse-electron demand Diels-Alder reactions between tetrazine and strained alkenes, and its components exhibit exquisite stability and chemoselectivity in cell lysate. This retro-Cope elimination reaction introduces a new member to the bioorthogonal reaction compendium outside the prolific class of cycloaddition reactions.
Collapse
Affiliation(s)
- Dahye Kang
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, Massachusetts 02215, United States.,Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Justin Kim
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, Massachusetts 02215, United States.,Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, Massachusetts 02115, United States
| |
Collapse
|
18
|
Krasheninina OA, Thaler J, Erlacher MD, Micura R. Amine-to-Azide Conversion on Native RNA via Metal-Free Diazotransfer Opens New Avenues for RNA Manipulations. ANGEWANDTE CHEMIE (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 133:7046-7050. [PMID: 38504956 PMCID: PMC10947191 DOI: 10.1002/ange.202015034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 12/19/2020] [Indexed: 03/21/2024]
Abstract
A major challenge in the field of RNA chemistry is the identification of selective and quantitative conversion reactions on RNA that can be used for tagging and any other RNA tool development. Here, we introduce metal-free diazotransfer on native RNA containing an aliphatic primary amino group using the diazotizing reagent fluorosulfuryl azide (FSO2N3). The reaction provides the corresponding azide-modified RNA in nearly quantitatively yields without affecting the nucleobase amino groups. The obtained azido-RNA can then be further processed utilizing well-established bioortho-gonal reactions, such as azide-alkyne cycloadditions (Click) or Staudinger ligations. We exemplify the robustness of this approach for the synthesis of peptidyl-tRNA mimics and for the pull-down of 3-(3-amino-3-carboxypropyl)uridine (acp3U)- and lysidine (k2C)-containing tRNAs of an Escherichia coli tRNA pool isolated from cellular extracts. Our approach therefore adds a new dimension to the targeted chemical manipulation of diverse RNA species.
Collapse
Affiliation(s)
- Olga A. Krasheninina
- Institute of Organic Chemistry and Center for Molecular BiosciencesUniversity of InnsbruckInnrain 80–826020InnsbruckAustria
| | - Julia Thaler
- Institute of Organic Chemistry and Center for Molecular BiosciencesUniversity of InnsbruckInnrain 80–826020InnsbruckAustria
| | - Matthias D. Erlacher
- Institute of Genomics and RNomicsBiocenterMedical University of InnsbruckInnrain 80–826020InnsbruckAustria
| | - Ronald Micura
- Institute of Organic Chemistry and Center for Molecular BiosciencesUniversity of InnsbruckInnrain 80–826020InnsbruckAustria
| |
Collapse
|
19
|
Krasheninina OA, Thaler J, Erlacher MD, Micura R. Amine-to-Azide Conversion on Native RNA via Metal-Free Diazotransfer Opens New Avenues for RNA Manipulations. Angew Chem Int Ed Engl 2021; 60:6970-6974. [PMID: 33400347 PMCID: PMC8048507 DOI: 10.1002/anie.202015034] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 12/19/2020] [Indexed: 12/12/2022]
Abstract
A major challenge in the field of RNA chemistry is the identification of selective and quantitative conversion reactions on RNA that can be used for tagging and any other RNA tool development. Here, we introduce metal-free diazotransfer on native RNA containing an aliphatic primary amino group using the diazotizing reagent fluorosulfuryl azide (FSO2 N3 ). The reaction provides the corresponding azide-modified RNA in nearly quantitatively yields without affecting the nucleobase amino groups. The obtained azido-RNA can then be further processed utilizing well-established bioortho-gonal reactions, such as azide-alkyne cycloadditions (Click) or Staudinger ligations. We exemplify the robustness of this approach for the synthesis of peptidyl-tRNA mimics and for the pull-down of 3-(3-amino-3-carboxypropyl)uridine (acp3 U)- and lysidine (k2 C)-containing tRNAs of an Escherichia coli tRNA pool isolated from cellular extracts. Our approach therefore adds a new dimension to the targeted chemical manipulation of diverse RNA species.
Collapse
Affiliation(s)
- Olga A. Krasheninina
- Institute of Organic Chemistry and Center for Molecular BiosciencesUniversity of InnsbruckInnrain 80–826020InnsbruckAustria
| | - Julia Thaler
- Institute of Organic Chemistry and Center for Molecular BiosciencesUniversity of InnsbruckInnrain 80–826020InnsbruckAustria
| | - Matthias D. Erlacher
- Institute of Genomics and RNomicsBiocenterMedical University of InnsbruckInnrain 80–826020InnsbruckAustria
| | - Ronald Micura
- Institute of Organic Chemistry and Center for Molecular BiosciencesUniversity of InnsbruckInnrain 80–826020InnsbruckAustria
| |
Collapse
|
20
|
Singha M, Spitalny L, Nguyen K, Vandewalle A, Spitale RC. Chemical methods for measuring RNA expression with metabolic labeling. WILEY INTERDISCIPLINARY REVIEWS-RNA 2021; 12:e1650. [PMID: 33738981 DOI: 10.1002/wrna.1650] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 02/25/2021] [Accepted: 02/25/2021] [Indexed: 12/27/2022]
Abstract
Tracking the expression of RNA in a cell-specific manner is a major challenge in basic and disease research. Herein we outline the current state of employing chemical approaches for cell-specific RNA expression studies. We define the utility of metabolic labels for tracking RNA synthesis, the approaches for characterizing metabolic incorporation and enrichment of labeled RNAs, and finally outline how these approaches have been used to study biological systems by providing mechanistic insights into transcriptional dynamics. Further efforts on this front will be the continued development of novel chemical handles for RNA enrichment and profiling as well as innovative approaches to control cell-specific incorporation of chemically modified metabolic probes. These advancements in RNA metabolic labeling techniques permit sensitive detection of RNA expression dynamics within relatively small subsets of cells in living tissues and organisms that are critical to performing complex developmental and pathological processes. This article is categorized under: RNA Methods > RNA Analyses in Cells RNA Evolution and Genomics > Ribonomics RNA Structure and Dynamics > RNA Structure, Dynamics and Chemistry.
Collapse
Affiliation(s)
- Monika Singha
- Department of Pharmaceutical Sciences, University of California, Irvine, Irvine, California, USA
| | - Leslie Spitalny
- Department of Pharmaceutical Sciences, University of California, Irvine, Irvine, California, USA
| | - Kim Nguyen
- Department of Pharmaceutical Sciences, University of California, Irvine, Irvine, California, USA
| | - Abigail Vandewalle
- Department of Pharmaceutical Sciences, University of California, Irvine, Irvine, California, USA
| | - Robert C Spitale
- Department of Pharmaceutical Sciences, University of California, Irvine, Irvine, California, USA.,Department of Developmental and Cellular Biology, University of California, Irvine, Irvine, California, USA.,Department of Chemistry, University of California, Irvine, Irvine, California, USA
| |
Collapse
|
21
|
Site-Specific Fluorescent Labeling of RNA Interior Positions. Molecules 2021; 26:molecules26051341. [PMID: 33802273 PMCID: PMC7959133 DOI: 10.3390/molecules26051341] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 02/26/2021] [Accepted: 03/01/2021] [Indexed: 02/08/2023] Open
Abstract
The introduction of fluorophores into RNA for both in vitro and in cellulo studies of RNA function and cellular distribution is a subject of great current interest. Here I briefly review methods, some well-established and others newly developed, which have been successfully exploited to site-specifically fluorescently label interior positions of RNAs, as a guide to investigators seeking to apply this approach to their studies. Most of these methods can be applied directly to intact RNAs, including (1) the exploitation of natural posttranslational modifications, (2) the repurposing of enzymatic transferase reactions, and (3) the nucleic acid-assisted labeling of intact RNAs. In addition, several methods are described in which specifically labeled RNAs are prepared de novo.
Collapse
|