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Xie J, Polese CL, Deprez E, Tauc P, Bogliotti N. Synthesis and Spectroscopic Characterization of Novel Thiourea-Bearing Photoactivatable NADPH Mimics Targeting NO Synthases. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/s-0041-1737374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
AbstractA new set of photoactivatable NADPH mimics bearing a thiourea linkage between a diarylbutadiene and an adenosine moiety functionalized by O-carboxymethyl groups has been designed and synthesized in a convergent strategy. These compounds display absorption and fluorescence emission maxima in DMSO (λmax,abs = 390 nm and λmax,em = 460 nm, respectively) consistent with the previously described analogues, with good fluorescence quantum yields (ΦF = 0.35–0.36), as well as two-photon absorption (σ2 = 10.1 GM at λmax,exc = 780 nm). These molecules could be useful photosensitive tools for biological studies, especially for cellular studies of nitric oxide synthases.
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Affiliation(s)
- Juan Xie
- PPSM, ENS Paris-Saclay, CNRS, Université Paris-Saclay
| | | | - Eric Deprez
- LBPA, ENS Paris-Saclay, CNRS, Université Paris-Saclay
| | - Patrick Tauc
- LBPA, ENS Paris-Saclay, CNRS, Université Paris-Saclay
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Directly Arylated Oligonucleotides as Fluorescent Molecular Rotors for Probing DNA Single-Nucleotide Polymorphisms. Bioorg Med Chem 2022; 56:116617. [DOI: 10.1016/j.bmc.2022.116617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 01/06/2022] [Accepted: 01/08/2022] [Indexed: 11/18/2022]
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Ravi Kumara GS, Seo YJ. Polymerase-mediated synthesis of p-vinylaniline-coupled fluorescent DNA for the sensing of nucleolin protein- c-myc G-quadruplex interactions. Org Biomol Chem 2021; 19:5788-5793. [PMID: 34085078 DOI: 10.1039/d1ob00863c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
In this paper we report the synthesis of two deoxyuridine derivatives (dUCN2, dUPy)-featuring p-vinylaniline-based fluorophores linked through a propargyl unit at the 5' position-that function as molecular rotors. This probing system proved to be useful for the sensing of gene regulation arising from interactions between this G-quadruplex and nucleolin.
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Affiliation(s)
| | - Young Jun Seo
- Department of Chemistry, Jeonbuk National University, Jeonju 54896, South Korea.
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Dilly S, Roman LJ, Bogliotti N, Xie J, Deprez E, Slama-Schwok A. Design of Light-Sensitive Triggers for Endothelial NO-Synthase Activation. Antioxidants (Basel) 2020; 9:antiox9020089. [PMID: 31972975 PMCID: PMC7070953 DOI: 10.3390/antiox9020089] [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: 12/19/2019] [Revised: 01/09/2020] [Accepted: 01/13/2020] [Indexed: 12/11/2022] Open
Abstract
A specific light trigger for activating endothelial Nitric Oxide-Synthase (eNOS) in real time would be of unique value to decipher cellular events associated with eNOS activation or to generate on demand cytotoxic levels of NO at specific sites for cancer research. We previously developed novel tools called nanotriggers (NT), which recognized constitutive NO-synthase, eNOS or neuronal NOS (nNOS), mainly via their 2’ phosphate group which is also present in NADPH in its binding site. Laser excitation of NT1 bound to eNOS triggered recombinant NOS activity and released NO. We recently generated new NTs carrying a 2’ or 3’ carboxylate group or two 2’ and 3’ carboxylate moieties replacing the 2’ phosphate group of NADPH. Among these new NT, only the 3’ carboxylate derivative released NO from endothelial cells upon laser activation. Here, Molecular Dynamics (MD) simulations showed that the 3’ carboxylate NT formed a folded structure with a hydrophobic hub, inducing a good stacking on FAD that likely drove efficient activation of nNOS. This NT also carried an additional small charged group which increased binding to e/nNOS; fluorescence measurements determined a 20-fold improved affinity upon binding to nNOS as compared to NT1 affinity. To gain in specificity for eNOS, we augmented a previous NT with a “hook” targeting variable residues in the NADPH site of eNOS. We discuss the potential of exploiting the chemical diversity within the NADPH site of eNOS for reversal of endothelial dysfunction in cells and for controlled generation of cytotoxic NO-derived species in cancer tissues.
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Affiliation(s)
- Sébastien Dilly
- UMR CNRS 8200, Gustave Roussy Cancer Research Center, Université Paris-Saclay, 94607 Villejuif, France;
| | - Linda J. Roman
- Department of Biochemistry, University of Texas Health Science Center, San Antonio, TX 78229, USA;
| | - Nicolas Bogliotti
- PPSM, CNRS UMR8531, ENS Paris-Saclay, Université Paris-Saclay, IDA FR3242, F-94235 Cachan, France; (N.B.); (J.X.)
| | - Juan Xie
- PPSM, CNRS UMR8531, ENS Paris-Saclay, Université Paris-Saclay, IDA FR3242, F-94235 Cachan, France; (N.B.); (J.X.)
| | - Eric Deprez
- LBPA, CNRS UMR8113, IDA FR3242, ENS Paris-Saclay, Université Paris-Saclay, F-94235 Cachan, France;
| | - Anny Slama-Schwok
- UMR CNRS 8200, Gustave Roussy Cancer Research Center, Université Paris-Saclay, 94607 Villejuif, France;
- Centre de Recherche Saint Antoine INSERM UMR S-938, Sorbonne Université, 75006 Paris, France
- Correspondence:
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Chennoufi R, Cabrié A, Nguyen NH, Bogliotti N, Simon F, Cinquin B, Tauc P, Boucher JL, Slama-Schwok A, Xie J, Deprez E. Light-induced formation of NO in endothelial cells by photoactivatable NADPH analogues targeting nitric-oxide synthase. Biochim Biophys Acta Gen Subj 2019; 1863:1127-1137. [PMID: 30986510 DOI: 10.1016/j.bbagen.2019.04.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 04/03/2019] [Accepted: 04/05/2019] [Indexed: 12/15/2022]
Abstract
BACKGROUND Nitric-oxide synthases (NOS) catalyze the formation of NO using NADPH as electron donor. We have recently designed and synthesized a new series of two-photon absorbing and photoactivatable NADPH analogues (NT). These compounds bear one or two carboxymethyl group(s) on the 2'- or/and 3'-position(s) of the ribose in the adenosine moiety, instead of a 2'-phosphate group, and differ by the nature of the electron donor in their photoactivatable chromophore (replacing the nicotinamide moiety). Here, we addressed the ability of NTs to photoinduce eNOS-dependent NO production in endothelial cells. METHODS The cellular fate of NTs and their photoinduced effects were studied using multiphoton fluorescence imaging, cell viability assays and a BODIPY-derived NO probe for NO measurements. The eNOS dependence of photoinduced NO production was addressed using two NOS inhibitors (NS1 and L-NAME) targeting the reductase and the oxygenase domains, respectively. RESULTS We found that, two compounds, those bearing a single carboxymethyl group on the 3'-position of the ribose, colocalize with the Golgi apparatus (the main intracellular location of eNOS) and display high intracellular two-photon brightness. Furthermore, a eNOS-dependent photooxidation was observed for these two compounds only, which is accompanied by a substantial intracellular NO production accounting for specific photocytotoxic effects. CONCLUSIONS We show for the first time that NT photoactivation efficiently triggers electron flow at the eNOS level and increases the basal production of NO by endothelial cells. GENERAL SIGNIFICANCE Efficient photoactivatable NADPH analogues targeting NOS could have important implications for generating apoptosis in tumor cells or modulating NO-dependent physiological processes.
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Affiliation(s)
- Rahima Chennoufi
- LBPA, CNRS UMR8113, IDA FR3242, ENS Paris-Saclay, Université Paris-Saclay, F-94235 Cachan, France
| | - Aimeric Cabrié
- LBPA, CNRS UMR8113, IDA FR3242, ENS Paris-Saclay, Université Paris-Saclay, F-94235 Cachan, France
| | - Nhi Ha Nguyen
- PPSM, CNRS UMR8531, IDA FR3242, ENS Paris-Saclay, Université Paris-Saclay, F-94235 Cachan, France
| | - Nicolas Bogliotti
- PPSM, CNRS UMR8531, IDA FR3242, ENS Paris-Saclay, Université Paris-Saclay, F-94235 Cachan, France
| | - Françoise Simon
- LBPA, CNRS UMR8113, IDA FR3242, ENS Paris-Saclay, Université Paris-Saclay, F-94235 Cachan, France
| | - Bertrand Cinquin
- LBPA, CNRS UMR8113, IDA FR3242, ENS Paris-Saclay, Université Paris-Saclay, F-94235 Cachan, France
| | - Patrick Tauc
- LBPA, CNRS UMR8113, IDA FR3242, ENS Paris-Saclay, Université Paris-Saclay, F-94235 Cachan, France
| | - Jean-Luc Boucher
- Laboratoire de "Chimie et Biochimie Pharmacologiques et Toxicologiques", CNRS UMR8601, Université Paris Descartes, 75270 Paris, France
| | - Anny Slama-Schwok
- Laboratoire de "Stabilité Génétique et Oncogénèse", CNRS UMR8200, Gustave Roussy, Université Paris-Saclay, 94607 Villejuif, France
| | - Juan Xie
- PPSM, CNRS UMR8531, IDA FR3242, ENS Paris-Saclay, Université Paris-Saclay, F-94235 Cachan, France
| | - Eric Deprez
- LBPA, CNRS UMR8113, IDA FR3242, ENS Paris-Saclay, Université Paris-Saclay, F-94235 Cachan, France.
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