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Selective MOR activity of DAPEA and Endomorphin-2 analogues containing a (R)-γ-Freidinger lactam in position two. Bioorg Chem 2021; 115:105219. [PMID: 34343741 DOI: 10.1016/j.bioorg.2021.105219] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 07/17/2021] [Accepted: 07/24/2021] [Indexed: 12/12/2022]
Abstract
The use of α-amino-γ lactam of Freidinger (Agl) may serve as an impressive method to increase the biological stability of peptides and an appropriate tool to elucidate their structure-activity relationships. The endomorphin-2 (EM-2) and [D-Ala2, des-Leu5] enkephalin amide (DAPEA) are two linear opioid tetrapeptides agonists of MOR and MOR/DOR respectively. Herein, we investigated the influence of the incorporation of (R/S)-Agl in position 2 and 3 on the biological profile of the aforementioned products in vitro and in vivo. Receptor radiolabeled displacement and functional assays were used to measure in vitro the binding affinity and receptors activation of the novel analogues. The mouse tail flick and formalin tests allowed to observe their antinociceptive effect in vivo. Data revealed that peptide A2D was able to selectively bind and activate MOR with a potent antinociceptive effect after intracerebroventricular (i.c.v.) administration, performing better than the parent compounds EM-2 and DAPEA. Molecular docking calculations helped us to understand the key role exerted by the Freidinger Agl moiety in A2D for the interaction with the MOR binding pocket.
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Flood DT, Yan NL, Dawson PE. Post-Translational Backbone Engineering through Selenomethionine-Mediated Incorporation of Freidinger Lactams. Angew Chem Int Ed Engl 2018; 57:8697-8701. [PMID: 29797386 DOI: 10.1002/anie.201804885] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 05/16/2018] [Indexed: 11/11/2022]
Abstract
Amino-γ-lactam (Agl) bridged dipeptides, commonly known as Freidinger lactams, have been shown to constrain peptide backbone topology and stabilize type II' β-turns. The utility of these links as peptide constraints has inspired new approaches to their incorporation into complex peptides and peptoids, all of which require harsh reaction conditions or protecting groups that limit their use on unprotected peptides and proteins. Herein, we employ a mild and selective alkylation of selenomethionine in acidic aqueous solution, followed by immobilization of the alkylated peptide on to bulk reverse-phase C18 silica and base-induced lactamization in DMSO. The utilization of selenomethionine, which is readily introduced by synthesis or expression, and the mild conditions enable selective backbone engineering in complex peptide and protein systems.
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Affiliation(s)
- Dillon T Flood
- Department of Chemistry, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Nicholas L Yan
- Department of Chemistry, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Philip E Dawson
- Department of Chemistry, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, CA, 92037, USA
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Flood DT, Yan NL, Dawson PE. Post‐Translational Backbone Engineering through Selenomethionine‐Mediated Incorporation of Freidinger Lactams. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201804885] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Dillon T. Flood
- Department of Chemistry The Scripps Research Institute 10550 N. Torrey Pines Road La Jolla CA 92037 USA
| | - Nicholas L. Yan
- Department of Chemistry The Scripps Research Institute 10550 N. Torrey Pines Road La Jolla CA 92037 USA
| | - Philip E. Dawson
- Department of Chemistry The Scripps Research Institute 10550 N. Torrey Pines Road La Jolla CA 92037 USA
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Martin V, Legrand B, Vezenkov LL, Berthet M, Subra G, Calmès M, Bantignies JL, Martinez J, Amblard M. Turning Peptide Sequences into Ribbon Foldamers by a Straightforward Multicyclization Reaction. Angew Chem Int Ed Engl 2015; 54:13966-70. [DOI: 10.1002/anie.201506955] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Revised: 08/26/2015] [Indexed: 12/19/2022]
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Martin V, Legrand B, Vezenkov LL, Berthet M, Subra G, Calmès M, Bantignies J, Martinez J, Amblard M. Turning Peptide Sequences into Ribbon Foldamers by a Straightforward Multicyclization Reaction. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201506955] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Vincent Martin
- Institut des Biomolécules Max Mousseron (IBMM), UMR 5247 CNRS‐Université Montpellier‐ENSCM, Bâtiment E, Faculté de Pharmacie, 34093 Montpellier cedex 5 (France) http://www.ibmm.univ‐montp1.fr
| | - Baptiste Legrand
- Institut des Biomolécules Max Mousseron (IBMM), UMR 5247 CNRS‐Université Montpellier‐ENSCM, Bâtiment E, Faculté de Pharmacie, 34093 Montpellier cedex 5 (France) http://www.ibmm.univ‐montp1.fr
| | - Lubomir L. Vezenkov
- Institut des Biomolécules Max Mousseron (IBMM), UMR 5247 CNRS‐Université Montpellier‐ENSCM, Bâtiment E, Faculté de Pharmacie, 34093 Montpellier cedex 5 (France) http://www.ibmm.univ‐montp1.fr
| | - Mathéo Berthet
- Institut des Biomolécules Max Mousseron (IBMM), UMR 5247 CNRS‐Université Montpellier‐ENSCM, Bâtiment E, Faculté de Pharmacie, 34093 Montpellier cedex 5 (France) http://www.ibmm.univ‐montp1.fr
| | - Gilles Subra
- Institut des Biomolécules Max Mousseron (IBMM), UMR 5247 CNRS‐Université Montpellier‐ENSCM, Bâtiment E, Faculté de Pharmacie, 34093 Montpellier cedex 5 (France) http://www.ibmm.univ‐montp1.fr
| | - Monique Calmès
- Institut des Biomolécules Max Mousseron (IBMM), UMR 5247 CNRS‐Université Montpellier‐ENSCM, Bâtiment E, Faculté de Pharmacie, 34093 Montpellier cedex 5 (France) http://www.ibmm.univ‐montp1.fr
| | - Jean‐Louis Bantignies
- LC2 ‐ UMR 5221 CNRS, Université de Montpellier, Place Eugène Bataillon, 34095 Montpellier (France)
| | - Jean Martinez
- Institut des Biomolécules Max Mousseron (IBMM), UMR 5247 CNRS‐Université Montpellier‐ENSCM, Bâtiment E, Faculté de Pharmacie, 34093 Montpellier cedex 5 (France) http://www.ibmm.univ‐montp1.fr
| | - Muriel Amblard
- Institut des Biomolécules Max Mousseron (IBMM), UMR 5247 CNRS‐Université Montpellier‐ENSCM, Bâtiment E, Faculté de Pharmacie, 34093 Montpellier cedex 5 (France) http://www.ibmm.univ‐montp1.fr
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Jamieson AG, Boutard N, Sabatino D, Lubell WD. Peptide scanning for studying structure-activity relationships in drug discovery. Chem Biol Drug Des 2013; 81:148-65. [PMID: 23253136 DOI: 10.1111/cbdd.12042] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Peptide-based therapeutics have grown in importance over the last few decades. Furthermore, peptides have been extensively used as lead compounds in the drug discovery process to investigate the nature of chemical space required for molecular recognition and activity at a variety of targets. This critical commentary reviews scanning techniques, which employ natural and non-proteinogenic amino acids to facilitate understanding of structural requirements for peptide biological activity. The value of sequence analysis by such methods is highlighted by examples, in which the elements for peptide affinity and activity have been elucidated and employed to prepare peptidomimetic leads for drug development.
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Affiliation(s)
- Andrew G Jamieson
- Department of Chemistry, University of Leicester, Leicester LE1 7RH, UK
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Jamieson AG, Boutard N, Beauregard K, Bodas MS, Ong H, Quiniou C, Chemtob S, Lubell WD. Positional scanning for peptide secondary structure by systematic solid-phase synthesis of amino lactam peptides. J Am Chem Soc 2009; 131:7917-27. [PMID: 19453183 DOI: 10.1021/ja9010628] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Incorporation of amino lactams into biologically active peptides has been commonly used to restrict conformational mobility, enhance selectivity, and increase potency. A solid-phase method using a Fmoc-protection strategy has been developed for the systematic synthesis of peptides containing configurationally defined alpha- and beta-amino gamma-lactams. N-Alkylation of N-silyl peptides with five- and six-member cyclic sulfamidates 9 and 8 minimized bis-alkylation and provided N-alkyl peptides, which underwent lactam annulation under microwave heating. Employing this solid-phase protocol on the growth hormone secretagogue GHRP-6, as well as on the allosteric modulator of the IL-1 receptor 101.10, has furnished 16 lactam derivatives and validated the effectiveness of this approach on peptides bearing aliphatic, aromatic, branched, charged, and heteroatomic side chains. The binding affinity IC(50) values of the GHRP-6 lactam analogues on both the GHS-R1a and CD36 receptors are reported as well as inhibition of thymocyte proliferation measurements for the 101.10 lactam analogues. In these cases, lactam analogues were prepared exhibiting similar or improved properties compared with the parent peptide. Considering the potential for amino lactams to induce peptide turn conformations, the effective method described herein for their supported construction on growing peptides, and for the systematical amino lactam scan of peptides, has proven useful for the rapid identification of the secondary structure necessary for peptide biological activity.
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Affiliation(s)
- Andrew G Jamieson
- Chemistry Department, Université de Montréal, C.P. 6128, Succursale Centre-Ville, Montreal, Quebec H3C 3J7, Canada
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Bacsa B, Horváti K, Bõsze S, Andreae F, Kappe CO. Solid-Phase Synthesis of Difficult Peptide Sequences at Elevated Temperatures: A Critical Comparison of Microwave and Conventional Heating Technologies. J Org Chem 2008; 73:7532-42. [DOI: 10.1021/jo8013897] [Citation(s) in RCA: 140] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Bernadett Bacsa
- Christian Doppler Laboratory for Microwave Chemistry (CDLMC) and Institute of Chemistry, Karl-Franzens-University Graz, Heinrichstrasse 28, A-8010 Graz, Austria, Research Group of Peptide Chemistry, Hungarian Academy of Sciences, Eötvös Loránd University, 1117 Budapest, Hungary, and piCHEM Forschungs und EntwicklungsgmbH, Kahngasse 20, A-8045 Graz, Austria
| | - Kata Horváti
- Christian Doppler Laboratory for Microwave Chemistry (CDLMC) and Institute of Chemistry, Karl-Franzens-University Graz, Heinrichstrasse 28, A-8010 Graz, Austria, Research Group of Peptide Chemistry, Hungarian Academy of Sciences, Eötvös Loránd University, 1117 Budapest, Hungary, and piCHEM Forschungs und EntwicklungsgmbH, Kahngasse 20, A-8045 Graz, Austria
| | - Szilvia Bõsze
- Christian Doppler Laboratory for Microwave Chemistry (CDLMC) and Institute of Chemistry, Karl-Franzens-University Graz, Heinrichstrasse 28, A-8010 Graz, Austria, Research Group of Peptide Chemistry, Hungarian Academy of Sciences, Eötvös Loránd University, 1117 Budapest, Hungary, and piCHEM Forschungs und EntwicklungsgmbH, Kahngasse 20, A-8045 Graz, Austria
| | - Fritz Andreae
- Christian Doppler Laboratory for Microwave Chemistry (CDLMC) and Institute of Chemistry, Karl-Franzens-University Graz, Heinrichstrasse 28, A-8010 Graz, Austria, Research Group of Peptide Chemistry, Hungarian Academy of Sciences, Eötvös Loránd University, 1117 Budapest, Hungary, and piCHEM Forschungs und EntwicklungsgmbH, Kahngasse 20, A-8045 Graz, Austria
| | - C. Oliver Kappe
- Christian Doppler Laboratory for Microwave Chemistry (CDLMC) and Institute of Chemistry, Karl-Franzens-University Graz, Heinrichstrasse 28, A-8010 Graz, Austria, Research Group of Peptide Chemistry, Hungarian Academy of Sciences, Eötvös Loránd University, 1117 Budapest, Hungary, and piCHEM Forschungs und EntwicklungsgmbH, Kahngasse 20, A-8045 Graz, Austria
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