1
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Chagaleti BK, Baby K, Peña-Corona SI, Leyva-Gómez G, S M S, Naveen NR, Jose J, Aldahish AA, Sharifi-Rad J, Calina D. Anti-cancer properties of Sansalvamide A, its derivatives, and analogs: an updated review. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2024:10.1007/s00210-024-03129-0. [PMID: 38739152 DOI: 10.1007/s00210-024-03129-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Accepted: 04/29/2024] [Indexed: 05/14/2024]
Abstract
As peptide-based therapies gain recognition for their potential anti-cancer activity, cyclic peptides like Sansalvamide A, a marine-derived cyclic depsipeptide, have emerged as a potential anti-cancer agent due to their potent activity against various cancer types in preclinical studies. This review offers a comprehensive overview of Sansalvamide A, including its sources, structure-activity relationship, and semi-synthetic derivatives. The review also aims to outline the mechanisms through which Sansalvamide A and its analogs exert their anti-proliferative effects and to discuss the need for enhancements in pharmacokinetic profiles for better clinical utility. An extensive literature search was conducted, focusing on studies that detailed the anti-cancer activity of Sansalvamide A, its pharmacokinetics, and mechanistic pathways. Data from both in vitro and in vivo studies were collated and analyzed. Sansalvamide A and its analogs demonstrated significant anti-cancer activity across various cancer models, mediated through Hsp 90 inhibition, Topoisomerase inhibition, and G0/G1 cell cycle arrest. However, their pharmacokinetic properties were identified as a significant limitation, requiring improvement for effective clinical translation. Despite its notable anti-cancer effects, the utility of Sansalvamide A is currently limited by its pharmacokinetic characteristics. Therefore, while Sansalvamide A exhibits promise as an anti-cancer agent, there is a compelling need for further clinical and toxicological studies and optimization of its pharmacokinetic profile to fully exploit its therapeutic potential alongside modern cancer therapies.
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Affiliation(s)
- Bharat Kumar Chagaleti
- Department of Pharmaceutical Chemistry, Akshaya Institute of Pharmacy, Tumkur, Karnataka, India
| | - Krishnaprasad Baby
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, India
| | - Sheila I Peña-Corona
- Departamento de Farmacia, Facultad de Química, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Gerardo Leyva-Gómez
- Departamento de Farmacia, Facultad de Química, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Sindhoor S M
- Department of Pharmaceutics, NGSM Institute of Pharmaceutical Sciences, Nitte (Deemed to be University), Mangaluru, Karnataka, 575018, India
| | - N Raghavendra Naveen
- Department of Pharmaceutics, Sri Adichunchanagiri College of Pharmacy, Adichunchanagiri University, B.G. Nagar, Bellur, Karnataka, India
| | - Jobin Jose
- Department of Pharmaceutics, NGSM Institute of Pharmaceutical Sciences, Nitte (Deemed to be University), Mangaluru, Karnataka, 575018, India.
| | - Afaf Ahmed Aldahish
- Department of Pharmacology, College of Pharmacy, King Khalid University, Abha, 61441, Kingdom of Saudi Arabia
| | | | - Daniela Calina
- Department of Clinical Pharmacy, University of Medicine and Pharmacy of Craiova, 200349, Craiova, Romania
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2
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Yang X, Hua C, Lin L, Ganting Z. Antimicrobial peptides as potential therapy for gastrointestinal cancers. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2023; 396:2831-2841. [PMID: 37249612 DOI: 10.1007/s00210-023-02536-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Accepted: 05/16/2023] [Indexed: 05/31/2023]
Abstract
Since conventional therapy faces limitations in the field of different cancers as well as gastrointestinal cancers, that decrease the survival rate of patients, there is an urgent need to find new effective therapeutic approaches without the adverse effects of the traditional agents. Antimicrobial peptides (AMPs) attract much attention and are well known for their role in innate immunity. These peptides, in addition to their antimicrobial activity, exhibit strong anticancer potential against various types of malignancy. AMPs specifically target tumor cells and have selective toxicity for these cells without affecting normal cells. Here we aim to comprehensively overview the current knowledge in the field of using AMPs as novel therapeutic agents for gastrointestinal cancer.
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Affiliation(s)
- Xiaoxia Yang
- Heping Hospital Attached to Changzhi Medical College, Changzhi, 046000, China
| | - Cui Hua
- Tangshan Fengnan District Traditional Chinese Medicine Hospital, Tangshan, 063000, China.
| | - Lin Lin
- Tangshan Hongci Hospital, Tangshan, 063000, China
| | - Zhao Ganting
- Heping Hospital Attached to Changzhi Medical College, Changzhi, 046000, China
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3
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Gattu R, Ramesh SS, Nadigar S, D CG, Ramesh S. Conjugation as a Tool in Therapeutics: Role of Amino Acids/Peptides-Bioactive (Including Heterocycles) Hybrid Molecules in Treating Infectious Diseases. Antibiotics (Basel) 2023; 12:antibiotics12030532. [PMID: 36978399 PMCID: PMC10044335 DOI: 10.3390/antibiotics12030532] [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: 02/09/2023] [Revised: 02/28/2023] [Accepted: 03/03/2023] [Indexed: 03/30/2023] Open
Abstract
Peptide-based drugs are gaining significant momentum in the modern drug discovery, which is witnessed by the approval of new drugs by the FDA in recent years. On the other hand, small molecules-based drugs are an integral part of drug development since the past several decades. Peptide-containing drugs are placed between small molecules and the biologics. Both the peptides as well as the small molecules (mainly heterocycles) pose several drawbacks as therapeutics despite their success in curing many diseases. This gap may be bridged by utilising the so called 'conjugation chemistry', in which both the partners are linked to one another through a stable chemical bond, and the resulting conjugates are found to possess attracting benefits, thus eliminating the stigma associated with the individual partners. Over the past decades, the field of molecular hybridisation has emerged to afford us new and efficient molecular architectures that have shown high promise in medicinal chemistry. Taking advantage of this and also considering our experience in this field, we present herein a review concerning the molecules obtained by the conjugation of peptides (amino acids) to small molecules (heterocycles as well as bioactive compounds). More than 125 examples of the conjugates citing nearly 100 references published during the period 2000 to 2022 having therapeutic applications in curing infectious diseases have been covered.
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Affiliation(s)
- Rohith Gattu
- Postgraduate Department of Chemistry, JSS College of Arts, Commerce and Science, Ooty Road, Mysuru 570025, Karnataka, India
| | - Sanjay S Ramesh
- Postgraduate Department of Chemistry, JSS College of Arts, Commerce and Science, Ooty Road, Mysuru 570025, Karnataka, India
| | - Siddaram Nadigar
- Postgraduate Department of Chemistry, JSS College of Arts, Commerce and Science, Ooty Road, Mysuru 570025, Karnataka, India
| | - Channe Gowda D
- Department of Studies in Chemistry, Manasagangotri, University of Mysore, Mysuru 570005, Karnataka, India
| | - Suhas Ramesh
- Postgraduate Department of Chemistry, JSS College of Arts, Commerce and Science, Ooty Road, Mysuru 570025, Karnataka, India
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4
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Kashif Khan R, Meanwell NA, Hager HH. Pseudoprolines as stereoelectronically tunable proline isosteres. Bioorg Med Chem Lett 2022; 75:128983. [PMID: 36096342 DOI: 10.1016/j.bmcl.2022.128983] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 08/29/2022] [Accepted: 09/05/2022] [Indexed: 11/18/2022]
Abstract
The cyclic structure of proline (Pro) confers unique conformational properties on this natural amino acid that influences polypeptide structure and function. Pseudoprolines are a family of Pro isosteres that incorporate a heteroatom, most prominently oxygen or sulfur but also silicon and selenium, to replace the Cβ or Cγ carbon atom of the pyrrolidine ring. These readily synthetically accessible structural motifs can facilitate facile molecular editing in a fashion that allows modulation of the amide bond topology of dipeptide elements and influence over ring pucker. While the properties of pseudoprolines have been exploited most prominently in the design of oligopeptide analogues, they have potential application in the design and optimization of small molecules. In this Digest, we summarize the physicochemical properties of pseudoprolines and illustrate their potential in drug discovery by surveying examples of applications in the design of bioactive molecules.
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Affiliation(s)
- R Kashif Khan
- Small Molecule Drug Discovery, Bristol Myers Squibb Research and Early Development, 100 Binney Street, Cambridge, MA 02142, USA.
| | - Nicholas A Meanwell
- Small Molecule Drug Discovery, Bristol Myers Squibb Research and Early Development, P.O. Box 4000, Princeton, NJ 08543-4000, USA.
| | - Harry H Hager
- Small Molecule Drug Discovery, Bristol Myers Squibb Research and Early Development, 200 Cambridgepark Drive, Cambridge, MA 02140, USA.
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5
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Cyclic Peptides for the Treatment of Cancers: A Review. Molecules 2022; 27:molecules27144428. [PMID: 35889301 PMCID: PMC9317348 DOI: 10.3390/molecules27144428] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 07/03/2022] [Accepted: 07/07/2022] [Indexed: 02/04/2023] Open
Abstract
Cyclic peptides have been widely reported to have therapeutic abilities in the treatment of cancer. This has been proven through in vitro and in vivo studies against breast, lung, liver, colon, and prostate cancers, among others. The multitude of data available in the literature supports the potential of cyclic peptides as anticancer agents. This review summarizes the findings from previously reported studies and discusses the different cyclic peptide compounds, the sources, and their modes of action as anticancer agents. The prospects and future of cyclic peptides will also be described to give an overview on the direction of cyclic peptide development for clinical applications.
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6
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Agouram N, El Hadrami EM, Bentama A. 1,2,3-Triazoles as Biomimetics in Peptide Science. Molecules 2021; 26:2937. [PMID: 34069302 PMCID: PMC8156386 DOI: 10.3390/molecules26102937] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 05/05/2021] [Accepted: 05/05/2021] [Indexed: 01/10/2023] Open
Abstract
Natural peptides are an important class of chemical mediators, essential for most vital processes. What limits the potential of the use of peptides as drugs is their low bioavailability and enzymatic degradation in vivo. To overcome this limitation, the development of new molecules mimicking peptides is of great importance for the development of new biologically active molecules. Therefore, replacing the amide bond in a peptide with a heterocyclic bioisostere, such as the 1,2,3-triazole ring, can be considered an effective solution for the synthesis of biologically relevant peptidomimetics. These 1,2,3-triazoles may have an interesting biological activity, because they behave as rigid link units, which can mimic the electronic properties of amide bonds and show bioisosteric effects. Additionally, triazole can be used as a linker moiety to link peptides to other functional groups.
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Affiliation(s)
- Naima Agouram
- Laboratory of Applied Organic Chemistry, Faculty of Science and Technology, Sidi Mohammed Ben Abdellah University, Immouzer Road, Fez 30050, Morocco; (E.M.E.H.); (A.B.)
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7
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Grob N, Schibli R, Béhé M, Valverde IE, Mindt TL. 1,5-Disubstituted 1,2,3-Triazoles as Amide Bond Isosteres Yield Novel Tumor-Targeting Minigastrin Analogs. ACS Med Chem Lett 2021; 12:585-592. [PMID: 33859799 PMCID: PMC8040048 DOI: 10.1021/acsmedchemlett.0c00636] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 03/08/2021] [Indexed: 12/12/2022] Open
Abstract
1,5-Disubstituted 1,2,3-triazoles (1,5-Tz) are considered bioisosteres of cis-amide bonds. However, their use for enhancing the pharmacological properties of peptides or proteins is not yet well established. Aiming to illustrate their utility, we chose the peptide conjugate [Nle15]MG11 (DOTA-dGlu-Ala-Tyr-Gly-Trp-Nle-Asp-Phe-NH2) as a model compound since it is known that the cholecystokinin-2 receptor (CCK2R) is able to accommodate turn conformations. Analogs of [Nle15]MG11 incorporating 1,5-Tz in the backbone were synthesized and radiolabeled with lutetium-177, and their pharmacological properties (cell internalization, receptor binding affinity and specificity, plasma stability, and biodistribution) were evaluated and compared with [Nle15]MG11 as well as their previously reported analogs bearing 1,4-disubstituted 1,2,3-triazoles. Our investigations led to the discovery of novel triazole-modified analogs of [Nle15]MG11 with nanomolar CCK2R-binding affinity and 2-fold increased tumor uptake. This study illustrates that substitution of amides by 1,5-disubstituted 1,2,3-triazoles is an effective strategy to enhance the pharmacological properties of biologically active peptides.
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Affiliation(s)
- Nathalie
M. Grob
- Department
of Chemistry and Applied Biosciences, ETH
Zurich, 8093 Zürich, Switzerland
| | - Roger Schibli
- Department
of Chemistry and Applied Biosciences, ETH
Zurich, 8093 Zürich, Switzerland
- Center
for Radiopharmaceutical Sciences, Division of Biology and Chemistry, Paul Scherrer Institute, 5232 Villigen, Switzerland
| | - Martin Béhé
- Center
for Radiopharmaceutical Sciences, Division of Biology and Chemistry, Paul Scherrer Institute, 5232 Villigen, Switzerland
| | - Ibai E. Valverde
- Institut
de Chimie Moléculaire de l’Université de Bourgogne,
UMR CNRS 6302, Université de Bourgogne Franche-Comté, 21000 Dijon, France
| | - Thomas L. Mindt
- Ludwig
Boltzmann Institute Applied Diagnostics, General Hospital of Vienna, 1090 Vienna, Austria
- Department
of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, 1090 Vienna, Austria
- Department
of Biomedical Imaging and Image Guided Therapy, Medical University of Vienna, 1090 Vienna, Austria
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8
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Cuevas F, Saavedra CJ, Romero‐Estudillo I, Boto A, Ordóñez M, Vergara I. Structural Diversity using Hyp
“Customizable Units”
:
Proof‐of‐Concept
Synthesis of Sansalvamide‐Related Antitumoral Peptides. European J Org Chem 2021. [DOI: 10.1002/ejoc.202001427] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Fernando Cuevas
- Centro de Investigaciones Químicas-IICBA Universidad Autónoma del Estado de Morelos Av. Universidad 1001 Cuernavaca Morelos 62209 México
| | - Carlos J. Saavedra
- Instituto de Productos Naturales y Agrobiología del CSIC Avda. Astrofísico Francisco Sánchez 3 38206- La Laguna Tenerife Spain
- BIOSIGMA SL c/Antonio Dominguez Afonso 16 38003- S/C Tenerife Spain
| | - Ivan Romero‐Estudillo
- Centro de Investigaciones Químicas-IICBA Universidad Autónoma del Estado de Morelos Av. Universidad 1001 Cuernavaca Morelos 62209 México
- Catedrático CONACYT-CIQ-UAEM México
| | - Alicia Boto
- Instituto de Productos Naturales y Agrobiología del CSIC Avda. Astrofísico Francisco Sánchez 3 38206- La Laguna Tenerife Spain
| | - Mario Ordóñez
- Centro de Investigaciones Químicas-IICBA Universidad Autónoma del Estado de Morelos Av. Universidad 1001 Cuernavaca Morelos 62209 México
| | - Irene Vergara
- Departamento de Ciencias Químico-Biológicas Universidad de las Américas Puebla, ExHda Sta. Catarina Mártir s/n San Andrés Cholula Puebla 72820 México
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9
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Boto A, González CC, Hernández D, Romero-Estudillo I, Saavedra CJ. Site-selective modification of peptide backbones. Org Chem Front 2021. [DOI: 10.1039/d1qo00892g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Exciting developments in the site-selective modification of peptide backbones are allowing an outstanding fine-tuning of peptide conformation, folding ability, and physico-chemical and biological properties.
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Affiliation(s)
- Alicia Boto
- Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Francisco Sánchez 3, 38206-La Laguna, Tenerife, Spain
| | - Concepción C. González
- Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Francisco Sánchez 3, 38206-La Laguna, Tenerife, Spain
| | - Dácil Hernández
- Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Francisco Sánchez 3, 38206-La Laguna, Tenerife, Spain
| | - Iván Romero-Estudillo
- Centro de Investigaciones Químicas-IICBA, Universidad Autónoma del Estado de Morelos. Av. Universidad 1001, Cuernavaca, Morelos 62209, Mexico
- Catedrático CONACYT-CIQ-UAEM, Mexico
| | - Carlos J. Saavedra
- Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Francisco Sánchez 3, 38206-La Laguna, Tenerife, Spain
- Programa Agustín de Betancourt, Universidad de la Laguna, 38200 Tenerife, Spain
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10
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Buckton LK, Rahimi MN, McAlpine SR. Cyclic Peptides as Drugs for Intracellular Targets: The Next Frontier in Peptide Therapeutic Development. Chemistry 2020; 27:1487-1513. [PMID: 32875673 DOI: 10.1002/chem.201905385] [Citation(s) in RCA: 81] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 08/26/2020] [Indexed: 12/18/2022]
Abstract
Developing macrocyclic peptides that can reach intracellular targets is a significant challenge. This review discusses the most recent strategies used to develop cell permeable cyclic peptides that maintain binding to their biological target inside the cell. Macrocyclic peptides are unique from small molecules because traditional calculated physical properties are unsuccessful for predicting cell membrane permeability. Peptide synthesis and experimental membrane permeability is the only strategy that effectively differentiates between cell permeable and cell impermeable molecules. Discussed are chemical strategies, including backbone N-methylation and stereochemical changes, which have produced molecular scaffolds with improved cell permeability. However, these improvements often come at the expense of biological activity as chemical modifications alter the peptide conformation, frequently impacting the compound's ability to bind to the target. Highlighted is the most promising approach, which involves side-chain alterations that improve cell permeability without impact binding events.
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Affiliation(s)
- Laura K Buckton
- Department of Chemistry, University of New South Wales, Sydney, Gate 2 High Street, SEB 701, Kensington, NSW, 2052, Australia
| | - Marwa N Rahimi
- Department of Chemistry, University of New South Wales, Sydney, Gate 2 High Street, SEB 701, Kensington, NSW, 2052, Australia
| | - Shelli R McAlpine
- Department of Chemistry, University of New South Wales, Sydney, Gate 2 High Street, SEB 701, Kensington, NSW, 2052, Australia
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11
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Rečnik LM, Kandioller W, Mindt TL. 1,4-Disubstituted 1,2,3-Triazoles as Amide Bond Surrogates for the Stabilisation of Linear Peptides with Biological Activity. Molecules 2020; 25:E3576. [PMID: 32781656 PMCID: PMC7465391 DOI: 10.3390/molecules25163576] [Citation(s) in RCA: 12] [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: 07/21/2020] [Revised: 08/03/2020] [Accepted: 08/04/2020] [Indexed: 12/20/2022] Open
Abstract
Peptides represent an important class of biologically active molecules with high potential for the development of diagnostic and therapeutic agents due to their structural diversity, favourable pharmacokinetic properties, and synthetic availability. However, the widespread use of peptides and conjugates thereof in clinical applications can be hampered by their low stability in vivo due to rapid degradation by endogenous proteases. A promising approach to circumvent this potential limitation includes the substitution of metabolically labile amide bonds in the peptide backbone by stable isosteric amide bond mimetics. In this review, we focus on the incorporation of 1,4-disubstituted 1,2,3-triazoles as amide bond surrogates in linear peptides with the aim to increase their stability without impacting their biological function(s). We highlight the properties of this heterocycle as a trans-amide bond surrogate and summarise approaches for the synthesis of triazole-containing peptidomimetics via the Cu(I)-catalysed azide-alkyne cycloaddition (CuAAC). The impacts of the incorporation of triazoles in the backbone of diverse peptides on their biological properties such as, e.g., blood serum stability and affinity as well as selectivity towards their respective molecular target(s) are discussed.
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Affiliation(s)
- Lisa-Maria Rečnik
- Ludwig Boltzmann Institute Applied Diagnostics, General Hospital Vienna, 1090 Vienna, Austria;
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, 1090 Vienna, Austria;
- Department of Biomedical Imaging and Image Guided Therapy, Division of Nuclear Medicine, Medical University of Vienna, 1090 Vienna, Austria
| | - Wolfgang Kandioller
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, 1090 Vienna, Austria;
| | - Thomas L. Mindt
- Ludwig Boltzmann Institute Applied Diagnostics, General Hospital Vienna, 1090 Vienna, Austria;
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, 1090 Vienna, Austria;
- Department of Biomedical Imaging and Image Guided Therapy, Division of Nuclear Medicine, Medical University of Vienna, 1090 Vienna, Austria
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12
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Grob NM, Häussinger D, Deupi X, Schibli R, Behe M, Mindt TL. Triazolo-Peptidomimetics: Novel Radiolabeled Minigastrin Analogs for Improved Tumor Targeting. J Med Chem 2020; 63:4484-4495. [PMID: 32302139 DOI: 10.1021/acs.jmedchem.9b01936] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
MG11 is a truncated analog of minigastrin, a peptide with high affinity and specificity toward the cholecystokinin-2 receptor (CCK2R), which is overexpressed by different tumors. Thus, radiolabeled MG11 derivatives have great potential for use in cancer diagnosis and therapy. A drawback of MG11 is its fast degradation by proteases, leading to moderate tumor uptake in vivo. We introduced 1,4-disubstituted 1,2,3-triazoles as metabolically stable bioisosteres to replace labile amide bonds of the peptide. The "triazole scan" yielded peptidomimetics with improved resistance to enzymatic degradation and/or enhanced affinity toward the CCK2R. Remarkably, our lead compound achieved a 10-fold increase in receptor affinity, resulting in a 2.6-fold improved tumor uptake in vivo. Modeling of the ligand-CCK2R complex suggests that an additional cation-π interaction of the aromatic triazole moiety with the Arg356 residue of the receptor is accountable for these observations. We show for the first time that the amide-to-triazole substitution strategy offers new opportunities in drug development that go beyond the metabolic stabilization of bioactive peptides.
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Affiliation(s)
- Nathalie M Grob
- Department of Chemistry and Applied Biosciences, ETH Zurich, 8093 Zürich, Switzerland
| | - Daniel Häussinger
- Department of Chemistry, University of Basel, 4056 Basel, Switzerland
| | - Xavier Deupi
- Condensed Matter Theory Group, Laboratory for Scientific Computing and Modelling, Paul Scherrer Institute, 5232 Villigen, Switzerland.,Laboratory of Biomolecular Research, Division of Biology and Chemistry, Paul Scherrer Institute, 5232 Villigen, Switzerland
| | - Roger Schibli
- Department of Chemistry and Applied Biosciences, ETH Zurich, 8093 Zürich, Switzerland.,Center for Radiopharmaceutical Sciences, Division of Biology and Chemistry, Paul Scherrer Institute, 5232 Villigen, Switzerland
| | - Martin Behe
- Center for Radiopharmaceutical Sciences, Division of Biology and Chemistry, Paul Scherrer Institute, 5232 Villigen, Switzerland
| | - Thomas L Mindt
- Ludwig Boltzmann Institute Applied Diagnostics, General Hospital of Vienna, 1090 Vienna, Austria.,Department of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, 1090 Vienna, Austria.,Department of Biomedical Imaging and Image Guided Therapy, Medical University of Vienna, 1090 Vienna, Austria
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13
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Ma C, Chen M, Chu W, Tao J, Kong D, Zhang M, Feng W. A Practical and Total Synthesis of Pasireotide: Synthesis of Cyclic Hexapeptide via a Three-Component Condensation. Molecules 2019; 24:molecules24112185. [PMID: 31212595 PMCID: PMC6600510 DOI: 10.3390/molecules24112185] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 05/29/2019] [Accepted: 06/04/2019] [Indexed: 11/16/2022] Open
Abstract
Pasireotide is a multi-receptor ligand somatostatin analogue approved for medical treatment of Cushing’s disease and acromegaly. The liquid-phase total synthesis of pasireotide-a 18-membered cyclic hexapeptide-was achieved by the 3 + 2 + 1 strategy, and the Pro1-Phe6 peptide bond was selected as the final cyclization position. Two key fragments were simply synthesized using N,O-bis(trimethylsilyl)acetamide/N-hydroxysuccinimide ester (BSA/NHS) as coupling agents, and processes of the two key fragments were simple without any chromatographic purification. The current synthesis method is easily scalable and produces the target peptide with an overall yield of 15%.
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Affiliation(s)
- Chunying Ma
- Department of New Drug Research and Development, Institute of Materia Medical, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China.
| | - Miao Chen
- Department of New Drug Research and Development, Institute of Materia Medical, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China.
| | - Weiming Chu
- Department of New Drug Research and Development, Institute of Materia Medical, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China.
| | - Jiayi Tao
- Department of New Drug Research and Development, Institute of Materia Medical, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China.
| | - Delong Kong
- Department of New Drug Research and Development, Institute of Materia Medical, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China.
| | - Mengmeng Zhang
- Department of New Drug Research and Development, Institute of Materia Medical, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China.
| | - Wenhua Feng
- Department of New Drug Research and Development, Institute of Materia Medical, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China.
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14
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Abstract
This Review is devoted to the chemistry of macrocyclic peptides having heterocyclic fragments in their structure. These motifs are present in many natural products and synthetic macrocycles designed against a particular biochemical target. Thiazole and oxazole are particularly common constituents of naturally occurring macrocyclic peptide molecules. This frequency of occurrence is because the thiazole and oxazole rings originate from cysteine, serine, and threonine residues. Whereas other heteroaryl groups are found less frequently, they offer many insightful lessons that range from conformational control to receptor/ligand interactions. Many options to develop new and improved technologies to prepare natural products have appeared in recent years, and the synthetic community has been pursuing synthetic macrocycles that have no precedent in nature. This Review attempts to summarize progress in this area.
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Affiliation(s)
- Ivan V Smolyar
- Department of Chemistry , Moscow State University , Leninskije Gory , 199991 Moscow , Russia
| | - Andrei K Yudin
- Davenport Research Laboratories, Department of Chemistry , University of Toronto , 80 St. George Street , Toronto , Ontario M5S 3H6 , Canada
| | - Valentine G Nenajdenko
- Department of Chemistry , Moscow State University , Leninskije Gory , 199991 Moscow , Russia
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15
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(E)-N′-(4-Fluorobenzylidene)-5-methyl-2-(pyridin-3-yl)thiazole-4-carbohydrazide. MOLBANK 2019. [DOI: 10.3390/m1058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
5-methyl-2-(pyridin-3-yl)-1,3-thiazole-4-carbohydrazide (1) on treatment with 4-fluorobenzaldehyde in presence of catalytic amount of acetic acid, accessed the target compound (2) with the yield of 79%. The target compound was confirmed by 1H-NMR, 13C-NMR, FT-IR and LCMS. In vitro antibacterial activity against Staphylococcus aureus (S. Aureus), Bacillus subtilis (B. subtilis), Escherichia coli (E. coli), and Pseudomonas aeruginosa (P. aeruginosa) were carried out and compound 2 showed promising activity against B. subtilis. In addition, compound 2 was analyzed for DNA binding study. It revealed that compound 2 has a promising affinity towards DNA double helix.
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16
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Zaiter SS, Huo Y, Tiew FY, Gestwicki JE, McAlpine SR. Designing de Novo Small Molecules That Control Heat Shock Protein 70 (Hsp70) and Heat Shock Organizing Protein (HOP) within the Chaperone Protein-Folding Machinery. J Med Chem 2018; 62:742-761. [DOI: 10.1021/acs.jmedchem.8b01436] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Samantha S. Zaiter
- Department of Chemistry, University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Yuantao Huo
- Department of Chemistry, University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Fong Y. Tiew
- Department of Chemistry, University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Jason E. Gestwicki
- Department of Pharmaceutical Chemistry, Institute for Neuro-degenerative Disease, University of California, San Francisco, San Francisco, California 94158, United States
| | - Shelli R. McAlpine
- Department of Chemistry, University of New South Wales, Sydney, New South Wales 2052, Australia
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17
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Hamdan F, Tahoori F, Balalaie S. Synthesis of novel cyclopeptides containing heterocyclic skeletons. RSC Adv 2018; 8:33893-33926. [PMID: 35548835 PMCID: PMC9086729 DOI: 10.1039/c8ra03899f] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Accepted: 09/14/2018] [Indexed: 01/13/2023] Open
Abstract
Cyclopeptides can be considered as naturally biologically active compounds. Over the last several decades, many attempts have been made to synthesize complex naturally occurring cyclopeptides, and great progress has been achieved to advance the field of total synthesis. Moreover, cyclopeptides containing heterocyclic skeletons have been recently developed into powerful reactions and approaches. This review aims to highlight recent advances in the synthesis of cyclopeptides containing heterocyclic skeletons such as triazole, oxazole, thiazole, and tetrazole.
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Affiliation(s)
- Fatima Hamdan
- Peptide Chemistry Research Center, K. N. Toosi University of Technology P. O. Box 15875-4416 Tehran Iran
| | - Fatemeh Tahoori
- Razi Vaccine and Serum Research Institute, Agricultural Research, Education and Extension Organization (AREEO) Karaj Iran
| | - Saeed Balalaie
- Peptide Chemistry Research Center, K. N. Toosi University of Technology P. O. Box 15875-4416 Tehran Iran
- Medical Biology Research Center, Kermanshah University of Medical Sciences Kermanshah Iran
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18
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Xie S, Savchenko AI, Krenske EH, Grange RL, Gahan LR, Williams CM. Developing Cyclic Peptide Heteroatom Interchange: Synthesis and DFT Modelling of a HI‐Ascidiacyclamide Isomer. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800449] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Sida Xie
- School of Chemistry and Molecular Biosciences University of Queensland 4072 Brisbane Australia
- Southwest Forestry University 650224 Kunming P. R. China
| | - Andrei I. Savchenko
- School of Chemistry and Molecular Biosciences University of Queensland 4072 Brisbane Australia
| | - Elizabeth H. Krenske
- School of Chemistry and Molecular Biosciences University of Queensland 4072 Brisbane Australia
| | - Rebecca L. Grange
- School of Chemistry and Molecular Biosciences University of Queensland 4072 Brisbane Australia
| | - Lawrence R. Gahan
- School of Chemistry and Molecular Biosciences University of Queensland 4072 Brisbane Australia
| | - Craig M. Williams
- School of Chemistry and Molecular Biosciences University of Queensland 4072 Brisbane Australia
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19
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Soor HS, Appavoo SD, Yudin AK. Heterocycles: Versatile control elements in bioactive macrocycles. Bioorg Med Chem 2018; 26:2774-2779. [DOI: 10.1016/j.bmc.2017.10.022] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Revised: 10/13/2017] [Accepted: 10/17/2017] [Indexed: 10/18/2022]
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20
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Magata T, Hirokawa Y, Furokawa A, Takeuchi K, Ohtomo Y, Kino T, Kominami J, Nakai Y, Kitamura M, Maezaki N. Highly Diastereoselective Synthesis of 2-(1-N-Boc-aminoalkyl)thiazole-5-carboxylates by Reduction of tert-Butylsulfinyl Ketimines. Chem Pharm Bull (Tokyo) 2018; 66:416-422. [PMID: 29607906 DOI: 10.1248/cpb.c17-00907] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Positional isomers of naturally occurring peptide subunits were synthesized via highly diastereoselective reduction of tert-butylsulfinyl ketimines as a key reaction. While NaBH4 reduction of ketimines derived from 2-thiazolyl ketones afforded the (RS,R)-isomer with moderate diastereoselectivity, L-Selectride® reduction afforded the (RS,S)-isomer as the sole product. In contrast, ketimines derived from tert-butyl 2-thiazolyl ketone afforded the (RS,R)-isomer with low diastereoselectivity by both NaBH4 and L-Selectride® reduction. Stereochemistry of the reaction was discussed based on calculation of the conformational energies for ketimines.
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Affiliation(s)
| | | | | | | | | | | | | | - Yuto Nakai
- Faculty of Pharmacy, Osaka Ohtani University
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21
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Wurzer A, Vágner A, Horváth D, Fellegi F, Wester HJ, Kálmán FK, Notni J. Synthesis of Symmetrical Tetrameric Conjugates of the Radiolanthanide Chelator DOTPI for Application in Endoradiotherapy by Means of Click Chemistry. Front Chem 2018; 6:107. [PMID: 29692987 PMCID: PMC5902495 DOI: 10.3389/fchem.2018.00107] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Accepted: 03/22/2018] [Indexed: 12/27/2022] Open
Abstract
Due to its 4 carbonic acid groups being available for bioconjugation, the cyclen tetraphosphinate chelator DOTPI, 1,4,7,10-tetraazacyclododecane-1,4,7, 10-tetrakis[methylene(2-carboxyethylphosphinic acid)], represents an ideal scaffold for synthesis of tetrameric bioconjugates for labeling with radiolanthanides, to be applied as endoradiotherapeuticals. We optimized a protocol for bio-orthogonal DOTPI conjugation via Cu(I)-catalyzed Huisgen-cycloaddition of terminal azides and alkynes (CuAAC), based on the building block DOTPI(azide)4. A detailed investigation of kinetic properties of Cu(II)-DOTPI complexes aimed at optimization of removal of DOTPI-bound copper by transchelation. Protonation and equilibrium properties of Ca(II)-, Zn(II), and Cu(II)-complexes of DOTPI and its tetra-cyclohexylamide DOTPI(Chx)4 (a model for DOTPI conjugates) as well as kinetic inertness (transchelation challenge in the presence of 20 to 40-fold excess of EDTA) were investigated by pH-potentiometry and spectrophotometry. Similar stability constants of CaII-, ZnII, and CuII-complexes of DOTPI (logK(CaL) = 8.65, logK(ZnL = 15.40, logK(CuL) = 20.30) and DOTPI(Chx)4 (logK(CaL) = 8.99, logK(ZnL) = 15.13, logK(CuL) = 20.42) were found. Transchelation of Cu(II)-complexes occurs via proton-assisted dissociation, whereafter released Cu(II) is scavenged by EDTA. The corresponding dissociation rates [kd = 25 × 10−7 and 5 × 10−7 s−1 for Cu(DOTPI) and Cu(DOTPI(Chx)4), respectively, at pH 4 and 298 K] indicate that conjugation increases the kinetic inertness by a factor of 5. However, demetallation is completed within 4.5 and 7.2 h at pH 2 and 25°C, respectively, indicating that Cu(II) removal after formation of CuAAC can be achieved in an uncomplicated manner by addition of excess H4EDTA. For proof-of-principle, tetrameric DOTPI conjugates of the prostate-specific membrane antigen (PSMA) targeting motif Lys-urea-Glu (KuE) were synthesized via CuAAC as well as dibenzo-azacyclooctine (DBCO) based, strain-promoted click chemistry (SPAAC), which were labeled with Lu-177 and subsequently evaluated in vitro and in SCID mice bearing subcutaneous LNCaP tumor (PSMA+ human prostate carcinoma) xenografts. High affinities (3.4 and 1.4 nM, respectively) and persistent tumor uptakes (approx. 3.5% 24 h after injection) confirm suitability of DOTPI-based tetramers for application in targeted radionuclide therapy.
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Affiliation(s)
- Alexander Wurzer
- Pharmaceutical Radiochemistry, Technische Universität München, Munich, Germany
| | - Adrienn Vágner
- Department of Inorganic and Analytical Chemistry, University of Debrecen, Debrecen, Hungary
| | - Dávid Horváth
- Department of Inorganic and Analytical Chemistry, University of Debrecen, Debrecen, Hungary
| | - Flóra Fellegi
- Department of Inorganic and Analytical Chemistry, University of Debrecen, Debrecen, Hungary
| | - Hans-Jürgen Wester
- Pharmaceutical Radiochemistry, Technische Universität München, Munich, Germany
| | - Ferenc K Kálmán
- Department of Inorganic and Analytical Chemistry, University of Debrecen, Debrecen, Hungary
| | - Johannes Notni
- Pharmaceutical Radiochemistry, Technische Universität München, Munich, Germany
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22
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Xie S, Savchenko AI, Kerscher M, Grange RL, Krenske EH, Harmer JR, Bauer MJ, Broit N, Watters DJ, Boyle GM, Bernhardt PV, Parsons PG, Comba P, Gahan LR, Williams CM. Heteroatom-Interchanged Isomers of Lissoclinamide 5: Copper(II) Complexation, Halide Binding, and Biological Activity. European J Org Chem 2018. [DOI: 10.1002/ejoc.201701659] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Sida Xie
- School of Chemistry and Molecular Biosciences; The University of Queensland; 4072 Brisbane Queensland Australia
- Southwest Forestry University; 650224 Kunming P. R. China
| | - Andrei I. Savchenko
- School of Chemistry and Molecular Biosciences; The University of Queensland; 4072 Brisbane Queensland Australia
| | - Marion Kerscher
- Anorganisch-Chemisches Institut and Interdisciplinary Centre for Scientific Computing; Universität Heidelberg; INF 270; 69120 Heidelberg Germany
| | - Rebecca L. Grange
- School of Chemistry and Molecular Biosciences; The University of Queensland; 4072 Brisbane Queensland Australia
| | - Elizabeth H. Krenske
- School of Chemistry and Molecular Biosciences; The University of Queensland; 4072 Brisbane Queensland Australia
| | - Jeffrey R. Harmer
- Center for Advanced Imaging; The University of Queensland; 4072 Brisbane Queensland Australia
| | - Michelle J. Bauer
- QIMR Berghofer Medical Research Institute; PO Royal Brisbane Hospital; 4029 Brisbane Queensland Australia
| | - Natasa Broit
- QIMR Berghofer Medical Research Institute; PO Royal Brisbane Hospital; 4029 Brisbane Queensland Australia
| | - Dianne J. Watters
- School of Environment and Science; Griffith University; 4111 Brisbane QLD Australia
| | - Glen M. Boyle
- QIMR Berghofer Medical Research Institute; PO Royal Brisbane Hospital; 4029 Brisbane Queensland Australia
| | - Paul V. Bernhardt
- School of Chemistry and Molecular Biosciences; The University of Queensland; 4072 Brisbane Queensland Australia
| | - Peter G. Parsons
- QIMR Berghofer Medical Research Institute; PO Royal Brisbane Hospital; 4029 Brisbane Queensland Australia
| | - Peter Comba
- Anorganisch-Chemisches Institut and Interdisciplinary Centre for Scientific Computing; Universität Heidelberg; INF 270; 69120 Heidelberg Germany
| | - Lawrence R. Gahan
- School of Chemistry and Molecular Biosciences; The University of Queensland; 4072 Brisbane Queensland Australia
| | - Craig M. Williams
- School of Chemistry and Molecular Biosciences; The University of Queensland; 4072 Brisbane Queensland Australia
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23
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Marion A, Góra J, Kracker O, Fröhr T, Latajka R, Sewald N, Antes I. Amber-Compatible Parametrization Procedure for Peptide-like Compounds: Application to 1,4- and 1,5-Substituted Triazole-Based Peptidomimetics. J Chem Inf Model 2017; 58:90-110. [PMID: 29112399 DOI: 10.1021/acs.jcim.7b00305] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Peptidomimetics are molecules of particular interest in the context of drug design and development. They are proteolytically and metabolically more stable than their natural peptide counterparts but still offer high specificity toward their biological targets. In recent years, 1,4- and 1,5-disubstituted 1,2,3-triazole-based peptidomimetics have emerged as promising lead compounds for the design of various inhibitory and tumor-targeting molecules as well as for the synthesis of peptide analogues. The growing popularity of triazole-based peptidomimetics and a constantly broadening range of their application generated a demand for elaborate theoretical investigations by classical molecular dynamics simulations and molecular docking. Despite this rising interest, accurate and coherent force field parameters for triazole-based peptidomimetics are still lacking. Here, we report the first complete set of parameters dedicated to this group of compounds, named TZLff. This parametrization is compatible with the latest version of the AMBER force field (ff14SB) and can be readily applied for the modeling of pure triazole-based peptidomimetics as well as natural peptide sequences containing one or more triazole-based modifications in their backbone. The parameters were optimized to reproduce HF/6-31G* electrostatic potentials as well as MP2/cc-pVTZ equilibrium Hessian matrices and conformational potential energy surfaces through the use of a genetic algorithm-based search and least-squares fitting. Following the standards of AMBER, we introduce residue building units, thus allowing the user to define any given sequence of triazole-based peptidomimetics. Validation of the parameter set against ab initio- and NMR-based reference systems shows that we obtain fairly accurate results, which properly capture the conformational features of triazole-based peptidomimetics. The successful and efficient parametrization strategy developed in this work is general enough to be applied in a straightforward manner for parametrization of other peptidomimetics and, potentially, any polymeric assemblies.
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Affiliation(s)
- Antoine Marion
- Center for Integrated Protein Science Munich at the Department of Biosciences, Technische Universität München , Emil-Erlenmeyer-Forum 8, D-85354 Freising, Germany
| | - Jerzy Góra
- Organic and Bioorganic Chemistry, Department of Chemistry, Bielefeld University , Universitätsstraße 25, D-33615 Bielefeld, Germany.,Department of Organic and Pharmaceutical Technology, Faculty of Chemistry, Wroclaw University of Science and Technology , Wybrzeze Wyspianskiego 27, PL-50-370 Wroclaw, Poland
| | - Oliver Kracker
- Organic and Bioorganic Chemistry, Department of Chemistry, Bielefeld University , Universitätsstraße 25, D-33615 Bielefeld, Germany
| | - Tanja Fröhr
- Organic and Bioorganic Chemistry, Department of Chemistry, Bielefeld University , Universitätsstraße 25, D-33615 Bielefeld, Germany
| | - Rafał Latajka
- Department of Organic and Pharmaceutical Technology, Faculty of Chemistry, Wroclaw University of Science and Technology , Wybrzeze Wyspianskiego 27, PL-50-370 Wroclaw, Poland
| | - Norbert Sewald
- Organic and Bioorganic Chemistry, Department of Chemistry, Bielefeld University , Universitätsstraße 25, D-33615 Bielefeld, Germany
| | - Iris Antes
- Center for Integrated Protein Science Munich at the Department of Biosciences, Technische Universität München , Emil-Erlenmeyer-Forum 8, D-85354 Freising, Germany
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24
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Zaretsky S, Yudin AK. Recent advances in the synthesis of cyclic pseudopeptides. DRUG DISCOVERY TODAY. TECHNOLOGIES 2017; 26:3-10. [PMID: 29249240 DOI: 10.1016/j.ddtec.2017.11.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Accepted: 11/15/2017] [Indexed: 06/07/2023]
Abstract
Constrained peptides pose tremendous value in drug discovery. For example, owing to their large surface areas, they offer novel ways at inhibiting protein-protein interactions. As this field has grown, it has become desirable to introduce non-peptidic functionality into these rings to enable differentiated structure activity relationships and improved pharmacokinetic properties. Recent advances in the synthesis of cyclic pseudopeptides include macrocyclization through cysteine alkylation, multicomponent reactions, decarboxylative couplings, and novel stapling chemistry.
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Affiliation(s)
- Serge Zaretsky
- University of Toronto, Lash Miller Chemical Labs, 80 St. George Street, Toronto, ON M5S 3H6, Canada.
| | - Andrei K Yudin
- University of Toronto, Lash Miller Chemical Labs, 80 St. George Street, Toronto, ON M5S 3H6, Canada.
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25
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In pursuit of balgacyclamide A – Discovery of an oxazoline macrocycle with multiple myeloma cytotoxicity and penetration. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.09.071] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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26
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Pietkiewicz AL, Zhang Y, Rahimi MN, Stramandinoli M, Teusner M, McAlpine SR. RITA Mimics: Synthesis and Mechanistic Evaluation of Asymmetric Linked Trithiazoles. ACS Med Chem Lett 2017; 8:401-406. [PMID: 28435526 DOI: 10.1021/acsmedchemlett.6b00488] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Accepted: 03/06/2017] [Indexed: 02/07/2023] Open
Abstract
The established cytotoxic agent RITA contains a thiophene-furan-thiophene backbone and two terminal alcohol groups. Herein we investigate the effect of using thiazoles as the backbone in RITA-like molecules and modifying the terminal groups of these trithiazoles, thereby generating 41 unique structures. Incorporating side chains with varied steric bulk allowed us to investigate how size and a stereocenter impacted biological activity. Subjecting compounds to growth inhibition assays on HCT-116 cells showed that the most potent compounds 7d, 7e, and 7h had GI50 values of 4.4, 4.4, and 3.4 μM, respectively, versus RITA (GI50 of 800 nM). Analysis of these compounds in apoptosis assays proved that 7d, 7e, and 7h were as effective as RITA at inducing apoptosis. Evaluating the impact of 7h on proteins targeted by RITA (p53, c-Myc, and Mcl-1) indicated that it acts via a different mechanism of action to that of RITA. RITA suppressed Mcl-1 protein via p53, whereas compound 7h suppressed Mcl-1 expression via an alternative mechanism independent of p53.
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Affiliation(s)
| | - Yuqi Zhang
- School of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia
| | - Marwa N. Rahimi
- School of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia
| | | | - Matthew Teusner
- School of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia
| | - Shelli R. McAlpine
- School of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia
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27
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Staś M, Bujak M, Broda MA, Siodłak D. Conformational preferences and synthesis of isomers Z and E of oxazole-dehydrophenylalanine. Biopolymers 2017; 106:283-94. [PMID: 27061820 DOI: 10.1002/bip.22852] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Revised: 03/30/2016] [Accepted: 04/05/2016] [Indexed: 12/17/2022]
Abstract
Dehydrophenylalanine, ΔPhe, is the most commonly studied α,β-dehydroamino acid. In nature, further modifications of the α,β-dehydroamino acids were found, for example, replacement of the C-terminal amide group by oxazole ring. The conformational properties of oxazole-dehydrophenylalanine residue (ΔPhe-Ozl), both isomers Z and E, were investigated. To determine all possible conformations, theoretical calculations were performed using Ac-(Z/E)-ΔPhe-Ozl(4-Me) model compounds at M06-2X/6-31++G(d,p) level of theory. Ac-(Z/E)-ΔPhe-Ozl-4-COOEt compounds were synthesized and the conformational preferences of each isomer, Z and E, were investigated using FTIR and NMR-NOE in solutions of increasing polarity (CHCl3 , DMSO-d6). The solid-state low-temperature structures of Ac-(Z)-ΔPhe-Ozl-4-COOEt and its intermediate analog Ac-(Z)-ΔPhe-Ozn(4-OH)-4-COOEt were also determined. In a weakly polar environment, the ΔPhe-Ozl residue has a tendency to adopt the conformation β2 with the calculated φ and ψ angles of -127° and 0° for the isomer Z and -170° and 26° for the isomer E. The increase of environment polarity favors the helical conformation α and the beta-turn like conformation β, but the conformation β2 seems to be still accessible. The (E)-ΔPhe-Ozl residue can be obtained from the isomer Z in photoisomerization reaction. However, hydroxyl-oxazoline-dehydrophenylalanine ΔPhe-Ozn(4-OH) decomposes in such conditions. Alternatively, (E)-ΔPhe-NH2 can be applied as a substrate in the Hantzsch reaction. © 2016 Wiley Periodicals, Inc. Biopolymers (Pept Sci) 106: 283-294, 2016.
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Affiliation(s)
- Monika Staś
- Faculty of Chemistry, University of Opole, Oleska 48, Opole, 45-052, Poland
| | - Maciej Bujak
- Faculty of Chemistry, University of Opole, Oleska 48, Opole, 45-052, Poland
| | - Małgorzata A Broda
- Faculty of Chemistry, University of Opole, Oleska 48, Opole, 45-052, Poland
| | - Dawid Siodłak
- Faculty of Chemistry, University of Opole, Oleska 48, Opole, 45-052, Poland
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28
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Koay YC, Wahyudi H, McAlpine SR. Reinventing Hsp90 Inhibitors: Blocking C-Terminal Binding Events to Hsp90 by Using Dimerized Inhibitors. Chemistry 2016; 22:18572-18582. [DOI: 10.1002/chem.201603464] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Yen Chin Koay
- School of Chemistry; University of New South Wales; Sydney NSW 2052 Australia
| | - Hendra Wahyudi
- Department of Bioengineering; University of Utah; Salt Lake City UT 84112 USA
| | - Shelli R. McAlpine
- School of Chemistry; University of New South Wales; Sydney NSW 2052 Australia
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29
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Notni J, Wester HJ. A Practical Guide on the Synthesis of Metal Chelates for Molecular Imaging and Therapy by Means of Click Chemistry. Chemistry 2016; 22:11500-8. [PMID: 27333118 DOI: 10.1002/chem.201600928] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Indexed: 12/23/2022]
Abstract
The copper-catalyzed cycloaddition of organic azides and alkynes (CuAAC) is one of the most popular reactions for rapid assembly of multifunctional molecular frameworks from commercially available building blocks. It is also attractive for synthesis of conjugates of multidentate chelate ligands (chelators) with molecular targeting vectors, such as peptides or proteins, which serve as precursors for labeling with metal radionuclides or are useful as MRI contrast agents after Gd(III) complexation. However, applicability of CuAAC for such purposes is complicated by formation of unwanted copper chelates. The alternative use of copper-free click chemistry, for example, the strain-promoted alkyne-azide cycloaddition (SPAAC) or the Diels-Alder reaction of tetrazines and strained alkenes, entails other specific challenges: Introduction of large, isomerically non-homogeneous and hydrophobic linker groups affects product homogeneity and can severely change pharmacokinetic profiles. Against this background, this review elucidates scope and applicability of both Cu-catalyzed and Cu-free alkyne-azide cycloadditions pertinent to the elaboration of radiometal chelates and MRI contrast agents, with an emphasis on strategies to tackle the problem of copper complexation during CuAAC.
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Affiliation(s)
- Johannes Notni
- Lehrstuhl für Pharmazeutische Radiochemie, Technische Universität München, Walther-Meißner Strasse 3, 85748, Garching, Germany.
| | - Hans-Jürgen Wester
- Lehrstuhl für Pharmazeutische Radiochemie, Technische Universität München, Walther-Meißner Strasse 3, 85748, Garching, Germany
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30
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Abstract
The 90-kDa heat-shock protein (Hsp90) is a molecular chaperone responsible for the stability and function of a wide variety of client proteins that are critical for cell growth and survival. Many of these client proteins are frequently mutated and/or overexpressed in cancer cells and are therefore being actively pursued as individual therapeutic targets. Consequently, Hsp90 inhibition offers a promising strategy for simultaneous degradation of several anticancer targets. Currently, most Hsp90 inhibitors under clinical evaluation act by blocking the binding of ATP to the Hsp90 N-terminal domain and thereby, induce the degradation of many Hsp90-dependent oncoproteins. Although, they have shown some promising initial results, clinical challenges such as induction of the heat-shock response, retinopathy, and gastrointestinal tract toxicity are emerging from human trials, which constantly raise concerns about the future development of these inhibitors. Novobiocin derivatives, which do not bind the chaperone's N-terminal ATPase pocket, have emerged over the past decade as an alternative strategy to inhibit Hsp90, but to date, no derivative has been investigated in the clinical setting. In recent years, a number of natural or synthetic compounds have been identified that modulate Hsp90 function via various mechanisms. These compounds not only offer new chemotypes for the development of future Hsp90 inhibitors but can also serve as chemical probes to unravel the biology of Hsp90. This chapter presents a synopsis of inhibitors that directly, allosterically, or even indirectly alters Hsp90 function, and highlights their proposed mechanisms of action.
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31
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Koay YC, Richardson NL, Zaiter SS, Kho J, Nguyen SY, Tran DH, Lee KW, Buckton LK, McAlpine SR. Hitting a Moving Target: How Does anN-Methyl Group Impact Biological Activity? ChemMedChem 2016; 11:881-92. [DOI: 10.1002/cmdc.201500572] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Indexed: 01/01/2023]
Affiliation(s)
- Yen Chin Koay
- Department of Chemistry; University of New South Wales; Gate 2 High Street, Dalton F12 Sydney NSW 2008 Australia
| | - Nicole L. Richardson
- Department of Chemistry; University of New South Wales; Gate 2 High Street, Dalton F12 Sydney NSW 2008 Australia
| | - Samantha S. Zaiter
- Department of Chemistry; University of New South Wales; Gate 2 High Street, Dalton F12 Sydney NSW 2008 Australia
| | - Jessica Kho
- Department of Chemistry; University of New South Wales; Gate 2 High Street, Dalton F12 Sydney NSW 2008 Australia
| | - Sheena Y. Nguyen
- Department of Chemistry; University of New South Wales; Gate 2 High Street, Dalton F12 Sydney NSW 2008 Australia
| | - Daniel H. Tran
- Department of Chemistry; University of New South Wales; Gate 2 High Street, Dalton F12 Sydney NSW 2008 Australia
| | - Ka Wai Lee
- Department of Chemistry; University of New South Wales; Gate 2 High Street, Dalton F12 Sydney NSW 2008 Australia
| | - Laura K. Buckton
- Department of Chemistry; University of New South Wales; Gate 2 High Street, Dalton F12 Sydney NSW 2008 Australia
| | - Shelli R. McAlpine
- Department of Chemistry; University of New South Wales; Gate 2 High Street, Dalton F12 Sydney NSW 2008 Australia
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32
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Chalyk BA, Kandaurova IY, Hrebeniuk KV, Manoilenko OV, Kulik IB, Iminov RT, Kubyshkin V, Tverdokhlebov AV, Ablialimov OK, Mykhailiuk PK. A base promoted multigram synthesis of aminoisoxazoles: valuable building blocks for drug discovery and peptidomimetics. RSC Adv 2016. [DOI: 10.1039/c6ra02365g] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
An easy access to a large panel of aminoisoxazoles starting from commonly available amino acids.
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Affiliation(s)
| | | | | | | | - Irene B. Kulik
- Institute of Bioorganic Chemistry & Petrochemistry
- NAS of Ukraine
- Kyiv 02660
- Ukraine
| | | | | | | | | | - Pavel K. Mykhailiuk
- Enamine Ltd
- 01103 Kyiv
- Ukraine
- Department of Chemistry
- Taras Shevchenko National University of Kyiv
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33
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Predicting the unpredictable: Recent structure–activity studies on peptide-based macrocycles. Bioorg Chem 2015; 60:74-97. [DOI: 10.1016/j.bioorg.2015.04.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Revised: 04/13/2015] [Accepted: 04/22/2015] [Indexed: 11/18/2022]
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34
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Pettersson M, Bliman D, Jacobsson J, Nilsson JR, Min J, Iconaru L, Guy RK, Kriwacki RW, Andréasson J, Grøtli M. 8-Triazolylpurines: Towards Fluorescent Inhibitors of the MDM2/p53 Interaction. PLoS One 2015; 10:e0124423. [PMID: 25942498 PMCID: PMC4420247 DOI: 10.1371/journal.pone.0124423] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2014] [Accepted: 03/02/2015] [Indexed: 11/18/2022] Open
Abstract
Small molecule nonpeptidic mimics of α-helices are widely recognised as protein-protein interaction (PPIs) inhibitors. Protein-protein interactions mediate virtually all important regulatory pathways in a cell, and the ability to control and modulate PPIs is therefore of great significance to basic biology, where controlled disruption of protein networks is key to understanding network connectivity and function. We have designed and synthesised two series of 2,6,9-substituted 8-triazolylpurines as α-helix mimetics. The first series was designed based on low energy conformations but did not display any biological activity in a biochemical fluorescence polarisation assay targeting MDM2/p53. Although solution NMR conformation studies demonstrated that such molecules could mimic the topography of an α-helix, docking studies indicated that the same compounds were not optimal as inhibitors for the MDM2/p53 interaction. A new series of 8-triazolylpurines was designed based on a combination of docking studies and analysis of recently published inhibitors. The best compound displayed low micromolar inhibitory activity towards MDM2/p53 in a biochemical fluorescence polarisation assay. In order to evaluate the applicability of these compounds as biologically active and intrinsically fluorescent probes, their absorption/emission properties were measured. The compounds display fluorescent properties with quantum yields up to 50%.
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Affiliation(s)
- Mariell Pettersson
- Department of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg, Sweden
| | - David Bliman
- Department of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg, Sweden
| | - Jimmy Jacobsson
- Department of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg, Sweden
| | - Jesper R. Nilsson
- Department of Chemical and Biological Engineering/Chemistry and Biochemistry, Chalmers University of Technology, Gothenburg, Sweden
| | - Jaeki Min
- Department of Chemical Biology and Therapeutics, St. Jude Children’s Research Hospital, 262 Danny Thomas Place, Memphis, Tennessee, United States of America
| | - Luigi Iconaru
- Department of Structural Biology, St. Jude Children’s Research Hospital, 262 Danny Thomas Place, Memphis, Tennessee, United States of America
| | - R. Kiplin Guy
- Department of Chemical Biology and Therapeutics, St. Jude Children’s Research Hospital, 262 Danny Thomas Place, Memphis, Tennessee, United States of America
| | - Richard W. Kriwacki
- Department of Structural Biology, St. Jude Children’s Research Hospital, 262 Danny Thomas Place, Memphis, Tennessee, United States of America
| | - Joakim Andréasson
- Department of Chemical and Biological Engineering/Chemistry and Biochemistry, Chalmers University of Technology, Gothenburg, Sweden
| | - Morten Grøtli
- Department of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg, Sweden
- * E-mail:
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35
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36
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Islam MA, Zhang Y, Wang Y, McAlpine SR. Design, synthesis and anticancer mechanistic studies of linked azoles. MEDCHEMCOMM 2015. [DOI: 10.1039/c4md00387j] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein we report the synthesis and biological activity evaluation of 2,4 linked azole-containing molecules.
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Affiliation(s)
| | - Yuqi Zhang
- School of Chemistry
- University of New South Wales
- Sydney
- Australia
| | - Yao Wang
- School of Chemistry
- University of New South Wales
- Sydney
- Australia
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37
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Jennepalli S, Hammer KA, Riley TV, Pyne SG, Keller PA. Synthesis of Mono and Bis[60]fullerene-Based Dicationic Peptoids. European J Org Chem 2014. [DOI: 10.1002/ejoc.201403046] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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38
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Synthesis and preliminary investigations into novel 1,2,3-triazole-derived androgen receptor antagonists inspired by bicalutamide. Bioorg Med Chem Lett 2014; 24:4948-53. [PMID: 25301770 DOI: 10.1016/j.bmcl.2014.09.036] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Revised: 09/09/2014] [Accepted: 09/11/2014] [Indexed: 12/20/2022]
Abstract
A versatile and high yielding synthesis of novel androgen receptor (AR) antagonists is presented. Using this methodology, six 1,4-substituted-1,2,3-triazole derived bicalutamide mimics were synthesised in five steps and in isolated overall yields from 41% to 85%. Evaluation of these compounds for their anti-proliferative properties against androgen dependent (LNCaP) and independent (PC-3) cells showed promising IC50 values of 34-45 μM and 29-151 μM, respectively. The data suggest that the latter compounds may be an excellent starting point for the development of prostate cancer therapeutics for both androgen dependent and independent forms of this disease. Docking of these compounds (each enantiomer) in silico into the T877A mutated androgen receptor, as possessed by LNCaP cells, was also undertaken.
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39
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Sivanathan S, Scherkenbeck J. Cyclodepsipeptides: a rich source of biologically active compounds for drug research. Molecules 2014; 19:12368-420. [PMID: 25153863 PMCID: PMC6271018 DOI: 10.3390/molecules190812368] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2014] [Revised: 08/04/2014] [Accepted: 08/04/2014] [Indexed: 01/08/2023] Open
Abstract
Faced with the need to find new drugs for all kinds of diseases, science sees that Nature offers numerous classes of compounds showing an impressively high biological potential. Among those are the cyclodepsipeptides, hybrid structures composed of amino and hydroxy acids. In the past decades numerous cyclodepsipeptides have been isolated and their potential as drugs has been studied extensively. For several cyclodepsipeptides total syntheses both in solution and on solid-phase have been established, allowing the production of combinatorial libraries. In addition, the biosynthesis of specific cyclodepsipeptides has been elucidated and used for the chemoenzymatic preparation of nonnatural analogues. This review summarizes the recent literature on cyclic tetra- to decadepsipeptides, composed exclusively of α-amino- and α-hydroxy acids.
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Affiliation(s)
- Sivatharushan Sivanathan
- Bergische Universität Wuppertal, Fachgruppe C, Organic Chemistry, Gaußstraße 20, Wuppertal 42119, Germany.
| | - Jürgen Scherkenbeck
- Bergische Universität Wuppertal, Fachgruppe C, Organic Chemistry, Gaußstraße 20, Wuppertal 42119, Germany.
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40
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Tumminakatti S, Reddy DN, Lakshmi AN, Prabhakaran EN. Synthesis of 5,6-dihydro-4H-1,3-thiazine containing peptide mimics from N-(3-hydroxypropyl)thioamides and epimerization studies. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.06.084] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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41
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Koay YC, McConnell JR, Wang Y, Kim SJ, Buckton LK, Mansour F, McAlpine SR. Chemically accessible hsp90 inhibitor that does not induce a heat shock response. ACS Med Chem Lett 2014; 5:771-6. [PMID: 25050163 DOI: 10.1021/ml500114p] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2014] [Accepted: 05/13/2014] [Indexed: 02/01/2023] Open
Abstract
Recent cancer therapies have focused on targeting biology networks through a single regulatory protein. Heat shock protein 90 (hsp90) is an ideal oncogenic target as it regulates over 400 client proteins and cochaperones. However, clinical inhibitors of hsp90 have had limited success; the primary reason being that they induce a heat shock response. We describe the synthesis and biological evaluation of a new hsp90 inhibitor, SM253. The previous generation on which SM253 is based (SM145) has poor overall synthetic yields, low solubility, and micromolar cytotoxicity. By comparison SM253 has relatively high overall yields, good aqueous solubility, and is more cytotoxic than its parent compound. Verification that hsp90 is SM253's target was accomplished using pull-down and protein folding assays. SM253 is superior to both SM145 and the clinical candidate 17-AAG as it decreases proteins related to the heat shock response by 2-fold, versus a 2-4-fold increase observed when cells are treated with 17-AAG.
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Affiliation(s)
- Yen Chin Koay
- The University of New South Wales, Sydney, NSW 2052, Australia
| | | | - Yao Wang
- The University of New South Wales, Sydney, NSW 2052, Australia
| | - Seong Jong Kim
- The University of New South Wales, Sydney, NSW 2052, Australia
| | | | - Flora Mansour
- The University of New South Wales, Sydney, NSW 2052, Australia
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42
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Barreto ADFS, Vercillo OE, Wessjohann LA, Andrade CKZ. Consecutive isocyanide-based multicomponent reactions: synthesis of cyclic pentadepsipeptoids. Beilstein J Org Chem 2014; 10:1017-22. [PMID: 24991252 PMCID: PMC4077530 DOI: 10.3762/bjoc.10.101] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2014] [Accepted: 04/07/2014] [Indexed: 12/17/2022] Open
Abstract
The synthesis of six cyclic depsipeptoids inspired by the natural depsipeptide sansalvamide A is described. An efficient and fast synthetic strategy was developed using a combination of consecutive isocyanide-based multicomponent reactions (Ugi and Passerini reactions). This methodology can be used to access a variety of cyclic oligodepsipeptoids.
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Affiliation(s)
- Angélica de Fátima S Barreto
- Laboratório de Química Metodológica e Orgânica Sintética, Instituto de Química, Universidade de Brasília, CP 4478, 70910-970 Brasília-DF, Brazil
| | - Otilie E Vercillo
- Faculdade UnB Planaltina, Área Universitária Nº 1, Vila Nossa Senhora de Fátima, Planaltina, 73300-000, Brasília, DF, Brazil
| | - Ludger A Wessjohann
- Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry, Weinberg 3, D-06120 Halle (Saale), Germany
| | - Carlos Kleber Z Andrade
- Laboratório de Química Metodológica e Orgânica Sintética, Instituto de Química, Universidade de Brasília, CP 4478, 70910-970 Brasília-DF, Brazil
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43
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44
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Postma TM, Albericio F. Cysteine pseudoprolines for thiol protection and peptide macrocyclization enhancement in Fmoc-based solid-phase peptide synthesis. Org Lett 2014; 16:1772-5. [PMID: 24617568 PMCID: PMC3971734 DOI: 10.1021/ol5004725] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
![]()
Contrary
to other studies, here we describe cysteine (Cys) pseudoproline-containing
peptides with short deprotection times in TFA. The deprotection times
fell in the same range as other protecting groups commonly used in
SPPS (e.g., 1–3 h). Moreover, when using Cys pseudoprolines
as peptide macrocyclization-enhancing moieties a considerable reduction
in reaction time was observed compared to a peptide containing trityl
protected Cys.
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Affiliation(s)
- Tobias M Postma
- Institute for Research in Biomedicine , 08028, Barcelona, Spain
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45
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Liu S, Yang Y, Zhao C, Huang J, Han C, Han J. Effect of the 4′-substituted phenylalanine moiety of sansalvamide A peptide on antitumor activity. MEDCHEMCOMM 2014. [DOI: 10.1039/c3md00294b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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46
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Wahyudi H, Wang Y, McAlpine SR. Dimerization of a heat shock protein 90 inhibitor enhances inhibitory activity. Org Biomol Chem 2014; 12:765-73. [DOI: 10.1039/c3ob41722k] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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47
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Ahmed MI, Harper JB, Hunter L. Incrementally increasing the length of a peptide backbone: effect on macrocyclisation efficiency. Org Biomol Chem 2014; 12:4598-601. [DOI: 10.1039/c4ob00492b] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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48
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Purushothaman S, Prasanna R, Lavanya S, Raghunathan R. Regio- and stereoselective synthesis of spiro-pyrrolidine/pyrrolizidine/thiazolidine-grafted macrocycles through intramolecular 1,3-dipolar cycloaddition reaction. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.08.039] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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49
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Chaume G, Simon J, Caupène C, Lensen N, Miclet E, Brigaud T. Incorporation of CF3–Pseudoprolines into Peptides: A Methodological Study. J Org Chem 2013; 78:10144-53. [DOI: 10.1021/jo401494q] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Grégory Chaume
- Laboratoire SOSCO, Université de Cergy-Pontoise, EA 4505, 5 Mail Gay-Lussac, 95000 Cergy-Pontoise, France
| | - Julien Simon
- Laboratoire SOSCO, Université de Cergy-Pontoise, EA 4505, 5 Mail Gay-Lussac, 95000 Cergy-Pontoise, France
| | - Caroline Caupène
- Laboratoire SOSCO, Université de Cergy-Pontoise, EA 4505, 5 Mail Gay-Lussac, 95000 Cergy-Pontoise, France
| | - Nathalie Lensen
- Laboratoire SOSCO, Université de Cergy-Pontoise, EA 4505, 5 Mail Gay-Lussac, 95000 Cergy-Pontoise, France
| | - Emeric Miclet
- Laboratoire des
BioMolécules, UMR 7203, Ecole Normale Supérieure, UPMC Paris 06, 4 Place Jussieu, 75005 Paris, France
| | - Thierry Brigaud
- Laboratoire SOSCO, Université de Cergy-Pontoise, EA 4505, 5 Mail Gay-Lussac, 95000 Cergy-Pontoise, France
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50
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Fu TH, Li Y, Thaker HD, Scott RW, Tew GN. Expedient Synthesis of SMAMPs via Click Chemistry. ACS Med Chem Lett 2013; 4:841-5. [PMID: 24936243 DOI: 10.1021/ml400155a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2013] [Accepted: 07/22/2013] [Indexed: 02/07/2023] Open
Abstract
A novel series of synthetic mimics of antimicrobial peptides (SMAMPs) containing triazole linkers were assembled using click chemistry. While only moderately active in buffer alone, an increase in antimicrobial activity against Staphylococcus aureus and Escherichia coli was observed when these SMAMPs were administered in the presence of mouse serum. One compound had minimum inhibitory concentrations (MICs) of 0.39 μg/mL and 6.25 μg/mL, respectively, and an HC50 of 693 μg/mL. These values compared favorably to peptide-based antimicrobials. A correlation between the net positive charge and SMAMP antimicrobial activity was observed. The triazole linker, an amide surrogate, was found to provide better antimicrobial activity against both S. aureus and E. coli when compared to other analogues.
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Affiliation(s)
- Tsung-hao Fu
- Polymer Science and Engineering Department, University of Massachusetts, 120 Governors Drive, Amherst, Massachusetts 01003, United States
| | - Yan Li
- Polymer Science and Engineering Department, University of Massachusetts, 120 Governors Drive, Amherst, Massachusetts 01003, United States
| | - Hitesh D. Thaker
- Polymer Science and Engineering Department, University of Massachusetts, 120 Governors Drive, Amherst, Massachusetts 01003, United States
| | - Richard W. Scott
- PolyMedix, Inc., 170 North Radnor-Chester Road, Suite 300, Radnor, Pennsylvania 19087, United States
| | - Gregory N. Tew
- Polymer Science and Engineering Department, University of Massachusetts, 120 Governors Drive, Amherst, Massachusetts 01003, United States
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