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Whitaker W, Ghosh D, Malakar P, Karras G, Orr-Ewing AJ. Femtosecond to Microsecond Observation of Photochemical Pathways in Nitroaromatic Phototriggers Using Transient Absorption Spectroscopy. J Phys Chem A 2024; 128:5892-5905. [PMID: 38988292 DOI: 10.1021/acs.jpca.4c02482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/12/2024]
Abstract
The synthetic accessibility and tolerance to structural modification of phototriggered compounds (PTs) based on the ortho- nitrobenzene (ONB) protecting group have encouraged a myriad of applications including optimization of biological activity, and supramolecular polymerization. Here, a combination of ultrafast transient absorption spectroscopy techniques is used to study the multistep photochemistry of two nitroaromatic phototriggers based on the ONB chromophore, O-(4,5-dimethoxy-2-nitrobenzyl)-l-serine (DMNB-Ser) and O-[(2-nitrophenyl)methyl]-l-tyrosine hydrochloride (NB-Tyr), in DMSO solutions on femtosecond to microsecond time scales following the absorption of UV light. From a common nitro-S1 excited state, the PTs can either undergo excited state intramolecular hydrogen transfer (ESIHT) to an aci-S1 isomer within the singlet state manifold, leading to direct S1 → S0 internal conversion through a conical intersection, or competitive intersystem crossing (ISC) to access the triplet state manifold on time scales of (1.93 ± 0.03) ps and (13.9 ± 1.2) ps for DMNB-Ser and NB-Tyr, respectively. Deprotonation of aci-T1 species to yield triplet anions is proposed to occur in both PTs, with an illustrative time constant of (9.4 ± 0.7) ns for DMNB-Ser. More than 75% of the photoexcited molecules return to their electronic ground states within 8 μs, either by direct S1 → S0 relaxation or anion reprotonation. Hence, upper limits to the quantum yields of photoproduct formation are estimated to be in the range of 13-25%. Mixed DMSO/H2O solvents show the influence of the environment on the observed photochemistry, for example, revealing two nitro-S1 lifetimes for DMNB-Ser in a 10:1 DMSO/H2O mixture of 1.95 ps and (10.1 ± 1.2) ps, which are attributed to different microsolvation environments.
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Affiliation(s)
- William Whitaker
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, U.K
| | - Deborin Ghosh
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, U.K
| | - Partha Malakar
- Central Laser Facility, Research Complex at Harwell, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Harwell Oxford, Didcot, Oxfordshire OX11 0QX, U.K
| | - Gabriel Karras
- Central Laser Facility, Research Complex at Harwell, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Harwell Oxford, Didcot, Oxfordshire OX11 0QX, U.K
| | - Andrew J Orr-Ewing
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, U.K
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2
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Breton-Patient C, Billotte S, Duchambon P, Fontaine G, Bombard S, Piguel S. Light-Activatable Photocaged UNC2025 for Triggering TAM Kinase Inhibition in Bladder Cancer. Chembiochem 2024; 25:e202300855. [PMID: 38363151 DOI: 10.1002/cbic.202300855] [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: 12/20/2023] [Revised: 02/15/2024] [Accepted: 02/16/2024] [Indexed: 02/17/2024]
Abstract
Photopharmacology is an emerging field that utilizes photo-responsive molecules to enable control over the activity of a drug using light. The aim is to limit the therapeutic action of a drug at the level of diseased tissues and organs. Considering the well-known implications of protein kinases in cancer and the therapeutic issues associated with protein kinase inhibitors, the photopharmacology is seen as an innovative and alternative solution with great potential in oncology. In this context, we developed the first photocaged TAM kinase inhibitors based on UNC2025, a first-in-class small molecule kinase inhibitor. These prodrugs showed good stability in biologically relevant buffer and rapid photorelease of the photoremovable protecting group upon UV-light irradiation (<10 min.). These light-activatable prodrugs led to a 16-fold decrease to a complete loss of kinase inhibition, depending on the protein and the position at which the coumarin-type phototrigger was introduced. The most promising candidate was the N,O-dicaged compound, showing the superiority of having two photolabile protecting groups on UNC2025 for being entirely inactive on TAM kinases. Under UV-light irradiation, the N,O-dicaged compound recovered its inhibitory potency in enzymatic assays and displayed excellent antiproliferative activity in RT112 cell lines.
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Affiliation(s)
- Chloé Breton-Patient
- Institut Curie, Université PSL CNRS UMR9187, Inserm U119, 91400, Orsay, France
- Université Paris-Saclay CNRS UMR9187, Inserm U119, 91400, Orsay, France
| | - Sébastien Billotte
- Université Paris-Saclay, Faculté de Pharmacie CNRS UMR 8076, 91400, Orsay, France
| | - Patricia Duchambon
- Institut Curie, Université PSL CNRS UMR9187, Inserm U119, 91400, Orsay, France
- Université Paris-Saclay CNRS UMR9187, Inserm U119, 91400, Orsay, France
| | - Gaëlle Fontaine
- Institut Curie, Université PSL CNRS UMR9187, Inserm U119, 91400, Orsay, France
- Université Paris-Saclay CNRS UMR9187, Inserm U119, 91400, Orsay, France
| | - Sophie Bombard
- Institut Curie, Université PSL CNRS UMR9187, Inserm U119, 91400, Orsay, France
- Université Paris-Saclay CNRS UMR9187, Inserm U119, 91400, Orsay, France
| | - Sandrine Piguel
- Université Paris-Saclay, Faculté de Pharmacie CNRS UMR 8076, 91400, Orsay, France
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3
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Descamps A, Arnoux P, Frochot C, Barbault F, Deschamp J, Monteil M, Migianu-Griffoni E, Legigan T, Lecouvey M. Synthesis and preliminary anticancer evaluation of photo-responsive prodrugs of hydroxymethylene bisphosphonate alendronate. Eur J Med Chem 2024; 269:116307. [PMID: 38460269 DOI: 10.1016/j.ejmech.2024.116307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 03/01/2024] [Accepted: 03/04/2024] [Indexed: 03/11/2024]
Abstract
The antitumoral activity of hydroxymethylene bisphosphonates (HMBP) such as alendronate or zoledronate is hampered by their exceptional bone-binding properties and their short plasmatic half-life which preclude their accumulation in non-skeletal tumors. In this context, the use of lipophilic prodrugs represents a simple and straightforward strategy to enhance the biodistribution of bisphosphonates in these tissues. We describe in this article the synthesis of light-responsive prodrugs of HMBP alendronate. These prodrugs include lipophilic photo-removable nitroveratryl groups which partially mask the highly polar alendronate HMBP scaffold. Photo-responsive prodrugs of alendronate are stable in physiological conditions and display reduced toxicity compared to alendronate against MDA-MB-231 cancer cells. However, the antiproliferative effect of these prodrugs is efficiently restored after cleavage of their nitroveratryl groups upon exposure to UV light. In addition, substitution of alendronate with such photo-responsive substituents drastically reduces its bone-binding properties, thereby potentially improving its biodistribution in soft tissues after i.v. administration. The development of such lipophilic photo-responsive prodrugs is a promising approach to fully exploit the anticancer effect of HMBPs on non-skeletal tumors.
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Affiliation(s)
- Aurélie Descamps
- Université Sorbonne Paris Nord, Department of Chemistry, UMR-CNRS, 7244, 1 Rue de Chablis, F-93000, Bobigny, France
| | | | - Céline Frochot
- Université de Lorraine, CNRS, LRGP, F-54000, Nancy, France
| | | | - Julia Deschamp
- Université Sorbonne Paris Nord, Department of Chemistry, UMR-CNRS, 7244, 1 Rue de Chablis, F-93000, Bobigny, France
| | - Maelle Monteil
- Université Sorbonne Paris Nord, Department of Chemistry, UMR-CNRS, 7244, 1 Rue de Chablis, F-93000, Bobigny, France
| | - Evelyne Migianu-Griffoni
- Université Sorbonne Paris Nord, Department of Chemistry, UMR-CNRS, 7244, 1 Rue de Chablis, F-93000, Bobigny, France
| | - Thibaut Legigan
- Université Sorbonne Paris Nord, Department of Chemistry, UMR-CNRS, 7244, 1 Rue de Chablis, F-93000, Bobigny, France.
| | - Marc Lecouvey
- Université Sorbonne Paris Nord, Department of Chemistry, UMR-CNRS, 7244, 1 Rue de Chablis, F-93000, Bobigny, France.
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4
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Riege D, Herschel S, Heintze L, Fenkl T, Wesseler F, Sievers S, Peifer C, Schade D. Identification of Maleimide-Fused Carbazoles as Novel Noncanonical Bone Morphogenetic Protein Synergizers. ACS Pharmacol Transl Sci 2023; 6:1207-1220. [PMID: 37588754 PMCID: PMC10426274 DOI: 10.1021/acsptsci.3c00103] [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: 05/20/2023] [Indexed: 08/18/2023]
Abstract
Morphogenic signaling pathways govern embryonic development and tissue homeostasis on the cellular level. Precise control of such signaling events paves the way for innovative therapeutic approaches in the field of regenerative medicine. In line with these notions, bone morphogenic protein (BMP) is a major osteogenic driver and pharmacological stimulation of BMP signaling holds supreme potential for diseases and defects of the skeleton. Efforts to identify small-molecule modalities that activate or potentiate the BMP pathway have primarily been focused on the canonical signaling cascade. Here, we describe the phenotypic identification and development of specific carbazolomaleimides 2 as novel noncanonical BMP synergizers with submicromolar osteogenic cellular potency. The devised chemical tools are characterized to specifically regulate Id gene expression in a SMAD-independent, yet highly BMP-dependent fashion. Mechanistic studies revealed that GSK3 inhibition and increased β-catenin levels are partly responsible for this activity. The utility of the new BMP synergizer profile was further exemplified by showing how the synergistic action of canonical and noncanonical BMP enhancers additively amplifies BMP-dependent osteogenic outputs. Carbazolomaleimide 2b serves as a new and unique pharmacological tool for the modulation and study of the BMP pathway.
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Affiliation(s)
- Daniel Riege
- Department of Pharmaceutical &
Medicinal Chemistry, Christian-Albrechts-University of
Kiel, Gutenbergstrasse 76, 24118 Kiel,
Germany
| | - Sven Herschel
- Department of Pharmaceutical &
Medicinal Chemistry, Christian-Albrechts-University of
Kiel, Gutenbergstrasse 76, 24118 Kiel,
Germany
| | - Linda Heintze
- Department of Pharmaceutical &
Medicinal Chemistry, Christian-Albrechts-University of
Kiel, Gutenbergstrasse 76, 24118 Kiel,
Germany
| | - Teresa Fenkl
- Department of Pharmaceutical &
Medicinal Chemistry, Christian-Albrechts-University of
Kiel, Gutenbergstrasse 76, 24118 Kiel,
Germany
| | - Fabian Wesseler
- Department of Pharmaceutical &
Medicinal Chemistry, Christian-Albrechts-University of
Kiel, Gutenbergstrasse 76, 24118 Kiel,
Germany
- Compound Management and
Screening Center, Otto-Hahn-Strasse 11, 44227
Dortmund, Germany
| | - Sonja Sievers
- Compound Management and
Screening Center, Otto-Hahn-Strasse 11, 44227
Dortmund, Germany
| | - Christian Peifer
- Department of Pharmaceutical &
Medicinal Chemistry, Christian-Albrechts-University of
Kiel, Gutenbergstrasse 76, 24118 Kiel,
Germany
| | - Dennis Schade
- Department of Pharmaceutical &
Medicinal Chemistry, Christian-Albrechts-University of
Kiel, Gutenbergstrasse 76, 24118 Kiel,
Germany
- Partner Site Kiel, DZHK,
German Center for Cardiovascular Research, 24105
Kiel, Germany
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5
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Vargas DF, Kaufman TS, Larghi EL. Total Synthesis of Aqabamycin G, a Nitrophenyl Indolylmaleimide Marine Alkaloid from Vibrio sp. WMBA. J Org Chem 2022; 87:13494-13500. [PMID: 35324169 DOI: 10.1021/acs.joc.2c00063] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The first total synthesis of the marine alkaloid aqabamycin G is disclosed. The synthetic sequence involved the stepwise addition to maleimide of an indole motif and a substituted diazo-benzenoid unit derived from acetaminophen. An alternative strategy using a protected phenol is also reported.
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Affiliation(s)
- Didier F Vargas
- Instituto de Química Rosario (IQUIR, CONICET-UNR) and Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, S2002LRK Rosario, Argentina
| | - Teodoro S Kaufman
- Instituto de Química Rosario (IQUIR, CONICET-UNR) and Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, S2002LRK Rosario, Argentina
| | - Enrique L Larghi
- Instituto de Química Rosario (IQUIR, CONICET-UNR) and Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, S2002LRK Rosario, Argentina
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6
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Le Bescont J, Mouawad L, Boddaert T, Bombard S, Piguel S. Photoactivatable Small‐Molecule Inhibitors for Light‐Controlled TAM Kinase Activity. CHEMPHOTOCHEM 2021. [DOI: 10.1002/cptc.202100131] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Julie Le Bescont
- Institut Curie Université PSL CNRS UMR 9187 INSERM U1196 Chimie et Modélisation pour la Biologie du Cancer 91405 Orsay France
- Université Paris-Saclay CNRS UMR 9187 INSERM U1196 Chimie et Modélisation pour la Biologie du Cancer 91405 Orsay France
| | - Liliane Mouawad
- Institut Curie Université PSL CNRS UMR 9187 INSERM U1196 Chimie et Modélisation pour la Biologie du Cancer 91405 Orsay France
- Université Paris-Saclay CNRS UMR 9187 INSERM U1196 Chimie et Modélisation pour la Biologie du Cancer 91405 Orsay France
| | - Thomas Boddaert
- Université Paris-Saclay CNRS UMR 8182 ICMMO CP3A Organic Synthesis Group 91405 Orsay France
| | - Sophie Bombard
- Institut Curie Université PSL CNRS UMR 9187 INSERM U1196 Chimie et Modélisation pour la Biologie du Cancer 91405 Orsay France
- Université Paris-Saclay CNRS UMR 9187 INSERM U1196 Chimie et Modélisation pour la Biologie du Cancer 91405 Orsay France
| | - Sandrine Piguel
- Institut Curie Université PSL CNRS UMR 9187 INSERM U1196 Chimie et Modélisation pour la Biologie du Cancer 91405 Orsay France
- Université Paris-Saclay CNRS UMR 9187 INSERM U1196 Chimie et Modélisation pour la Biologie du Cancer 91405 Orsay France
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7
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Targeted Cancer Therapy Using Compounds Activated by Light. Cancers (Basel) 2021; 13:cancers13133237. [PMID: 34209493 PMCID: PMC8269035 DOI: 10.3390/cancers13133237] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 06/18/2021] [Accepted: 06/24/2021] [Indexed: 12/21/2022] Open
Abstract
Cancer chemotherapy is affected by a modest selectivity and toxic side effects of pharmacological interventions. Among novel approaches to overcome this limitation and to bring to therapy more potent and selective agents is the use of light for selective activation of anticancer compounds. In this review, we focus on the anticancer applications of two light-activated approaches still in the experimental phase: photoremovable protecting groups ("photocages") and photoswitches. We describe the structural considerations behind the development of novel compounds and the plethora of assays used to confirm whether the photochemical and pharmacological properties are meeting the stringent criteria for an efficient in vivo light-dependent activation. Despite its immense potential, light activation brings many challenges, and the complexity of the task is very demanding. Currently, we are still deeply in the phase of pharmacological tools, but the vivid research and rapid development bring the light of hope for potential clinical use.
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8
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Novel antibody-drug conjugate with UV-controlled cleavage mechanism for cytotoxin release. Bioorg Chem 2020; 111:104475. [PMID: 33798843 DOI: 10.1016/j.bioorg.2020.104475] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Revised: 11/09/2020] [Accepted: 11/11/2020] [Indexed: 12/21/2022]
Abstract
Antibody-drug conjugates (ADCs) are being developed worldwide with the potential to revolutionize current cancer treatment strategies. However, off-target toxicity caused by the instability of linkers remains one of the main issues to be resolved. Developing a novel photocontrol-ADC with good stability and photocontrolled release seemed to be an attractive and practical solution. In this study, we designed, for the first time, a novel ultraviolet (UV) light-controlled ADC by carefully integrating the UV-cleavable o-nitro-benzyl structure into the linker. Our preliminary work indicated that the ADC exhibited good stability and photocontrollability while maintaining a targeting effect similar to that of the naked antibody. Upon irradiation with UV light, the ADC rapidly released free cytotoxins and exerted significant cytotoxicity toward drug-resistant tumor cells. Compared to those of the unirradiated cells, the EC50 values of ADCs increased by up to 50-fold. Furthermore, our research confirmed that the degradation products of unirradiated ADC, Cys-1a, were relatively less toxic, thus potentially reducing the off-target toxicity caused by nonspecific uptake of ADCs. The novel design strategy of UV light-controlled ADCs may provide new perspectives for future research on ADCs and promote the development of photocontrol systems.
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9
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A Photocleavable Contrast Agent for Light-Responsive MRI. Pharmaceuticals (Basel) 2020; 13:ph13100296. [PMID: 33050049 PMCID: PMC7599822 DOI: 10.3390/ph13100296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 09/18/2020] [Accepted: 10/03/2020] [Indexed: 11/16/2022] Open
Abstract
Thanks to its innocuousness and high spatiotemporal resolution, light is used in several established and emerging applications in biomedicine. Among them is the modulation of magnetic resonance imaging (MRI) contrast agents’ relaxivity with the aim to increase the sensitivity, selectivity and amount of functional information obtained from this outstanding whole-body medical imaging technique. This approach requires the development of molecular contrast agents that show high relaxivity and strongly pronounced photo-responsiveness. To this end, we report here the design and synthesis of a light-activated MRI contrast agent, together with its evaluation using UV–vis spectroscopy, Fast Field Cycling (FFC) relaxometry and relaxometric measurements on clinical MRI scanners. The high relaxivity of the reported agent changes substantially upon irradiation with light, showing a 17% decrease in relaxivity at 0.23T upon irradiation with λ = 400 nm (violet) light for 60 min. On clinical MRI scanners (1.5T and 3.0T), irradiation leads to a decrease in relaxivity of 9% and 19% after 3 and 60 min, respectively. The molecular design presents an important blueprint for the development of light-activatable MRI contrast agents.
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10
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Li J, Xiao D, Liu L, Xie F, Li W, Sun W, Yang X, Zhou X. Design, Synthesis, and In Vitro Evaluation of the Photoactivatable Prodrug of the PARP Inhibitor Talazoparib. Molecules 2020; 25:molecules25020407. [PMID: 31963730 PMCID: PMC7024556 DOI: 10.3390/molecules25020407] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 01/16/2020] [Accepted: 01/16/2020] [Indexed: 12/13/2022] Open
Abstract
In this article, we report the design, synthesis, photodynamic properties, and in vitro evaluation of photoactivatable prodrug for the poly (ADP-ribose) polymerase 1 (PARP-1) inhibitor Talazoparib. In order to yield a photoactivatable, inactive prodrug, photoactivatable protecting groups (PPGs) were employed to mask the key pharmacophore of Talazoparib. Our study confirmed the good stability and photolytic effect of prodrugs. A PARP-1 enzyme inhibition assay and PARylation experiment showed that the inhibitory activity of the prodrug was reduced 380 times and more than 658 times, respectively, which proved that the prodrug's expected activity was lost after PPG protection. In BRCA1- and BRCA2-deficient cell lines, the inhibitory activity of the compound was significantly restored after ultraviolet (UV) irradiation. The results indicate that the photoactivatable prodrug strategy is an interesting approach for studying PARP inhibitors. Meanwhile, the described photoactivatable prodrug also provided a new biological tool for the mechanism research of PARP.
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Affiliation(s)
- Jiaguo Li
- School of Pharmaceutical Sciences, Jilin University, Changchun 130021, China;
- National Engineering Research Center for the Emergency Drug, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China; (D.X.); (L.L.); (F.X.); (W.L.)
| | - Dian Xiao
- National Engineering Research Center for the Emergency Drug, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China; (D.X.); (L.L.); (F.X.); (W.L.)
| | - Lianqi Liu
- National Engineering Research Center for the Emergency Drug, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China; (D.X.); (L.L.); (F.X.); (W.L.)
| | - Fei Xie
- National Engineering Research Center for the Emergency Drug, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China; (D.X.); (L.L.); (F.X.); (W.L.)
| | - Wei Li
- National Engineering Research Center for the Emergency Drug, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China; (D.X.); (L.L.); (F.X.); (W.L.)
| | - Wei Sun
- School of Pharmaceutical Sciences, Jilin University, Changchun 130021, China;
- Correspondence: (W.S.); (X.Y.); (X.Z.); Tel.: +86-010-6693-0674 (X.Z.)
| | - Xiaohong Yang
- School of Pharmaceutical Sciences, Jilin University, Changchun 130021, China;
- Correspondence: (W.S.); (X.Y.); (X.Z.); Tel.: +86-010-6693-0674 (X.Z.)
| | - Xinbo Zhou
- National Engineering Research Center for the Emergency Drug, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China; (D.X.); (L.L.); (F.X.); (W.L.)
- Correspondence: (W.S.); (X.Y.); (X.Z.); Tel.: +86-010-6693-0674 (X.Z.)
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12
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Fleming CL, Grøtli M, Andréasson J. On‐Command Regulation of Kinase Activity using Photonic Stimuli. CHEMPHOTOCHEM 2019. [DOI: 10.1002/cptc.201800253] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Cassandra L. Fleming
- Department of Chemistry and Molecular BiologyUniversity of Gothenburg SE-41296 Göteborg Sweden
| | - Morten Grøtli
- Department of Chemistry and Molecular BiologyUniversity of Gothenburg SE-41296 Göteborg Sweden
| | - Joakim Andréasson
- Department of Chemistry and Chemical Engineering, Chemistry and BiochemistryChalmers University of Technology SE-41296 Göteborg Sweden
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13
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Sõrmus T, Lavogina D, Enkvist E, Uri A, Viht K. Efficient photocaging of a tight-binding bisubstrate inhibitor of cAMP-dependent protein kinase. Chem Commun (Camb) 2019; 55:11147-11150. [DOI: 10.1039/c9cc04978a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
PKA bisubstrate inhibitor photocaging resulted in an over 5 orders of magnitude affinity difference between the photocaged and the active inhibitor.
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Affiliation(s)
- Tanel Sõrmus
- Institute of Chemistry
- University of Tartu
- 50411 Tartu
- Estonia
| | - Darja Lavogina
- Institute of Chemistry
- University of Tartu
- 50411 Tartu
- Estonia
| | - Erki Enkvist
- Institute of Chemistry
- University of Tartu
- 50411 Tartu
- Estonia
| | - Asko Uri
- Institute of Chemistry
- University of Tartu
- 50411 Tartu
- Estonia
| | - Kaido Viht
- Institute of Chemistry
- University of Tartu
- 50411 Tartu
- Estonia
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14
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Yang ZH, Tan HR, Zhu JN, Zheng J, Zhao SY. Regioselective Silver-Catalyzed Carbon-Phosphorus Difunctionalization of Maleimides: One-Step Construction of Phosphonylated Indolylmaleimides and Pyrrolylmaleimides. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201701431] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Zhen-Hua Yang
- Department of Chemistry; Donghua University; No. 2999 North Renmin Road Shanghai 201620 People's Republic of China
| | - Hong-Ru Tan
- Department of Chemistry; Donghua University; No. 2999 North Renmin Road Shanghai 201620 People's Republic of China
| | - Jia-Nan Zhu
- Department of Chemistry; Donghua University; No. 2999 North Renmin Road Shanghai 201620 People's Republic of China
| | - Jian Zheng
- Department of Chemistry; Donghua University; No. 2999 North Renmin Road Shanghai 201620 People's Republic of China
| | - Sheng-Yin Zhao
- Department of Chemistry; Donghua University; No. 2999 North Renmin Road Shanghai 201620 People's Republic of China
- State Key Laboratory of Bioorganic & Natural Products Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; Shanghai 200032 People's Republic of China
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15
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Pinchuk B, von Drathen T, Opel V, Peifer C. Photoinduced Conversion of Antimelanoma Agent Dabrafenib to a Novel Fluorescent BRAF V600E Inhibitor. ACS Med Chem Lett 2016; 7:962-966. [PMID: 27774137 PMCID: PMC5066145 DOI: 10.1021/acsmedchemlett.6b00340] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Accepted: 09/20/2016] [Indexed: 01/17/2023] Open
Abstract
Dabrafenib (Tafinlar) was approved in 2013 by the FDA as a selective single agent treatment for patients with BRAFV600E mutation-positive advanced melanoma. One year later, a combination of dabrafenib and trametinib was used for treatment of BRAFV600E/K mutant metastatic melanoma. In the present study, we report on hitherto not described photosensitivity of dabrafenib both in organic and aqueous media. The half-lives for dabrafenib degradation were determined. Moreover, we revealed photoinduced chemical conversion of dabrafenib to its planar fluorescent derivative dabrafenib_photo 2. This novel compound could be isolated and biologically characterized in vitro. Both enzymatic and cellular assays proved that 2 is still a potent BRAFV600E inhibitor. The intracellular formation of 2 from dabrafenib upon ultraviolet irradiation is shown. The herein presented findings should be taken in account when handling dabrafenib both in preclinical research and in clinical applications.
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Affiliation(s)
- Boris Pinchuk
- Institute of Pharmacy, University of Kiel, Gutenbergstr. 76, D-24118 Kiel, Germany
| | - Thorsten von Drathen
- Institute of Pharmacy, University of Kiel, Gutenbergstr. 76, D-24118 Kiel, Germany
| | - Viktoria Opel
- Institute of Pharmacy, University of Kiel, Gutenbergstr. 76, D-24118 Kiel, Germany
| | - Christian Peifer
- Institute of Pharmacy, University of Kiel, Gutenbergstr. 76, D-24118 Kiel, Germany
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