1
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Jiang Z, Guo Y, Shi J, Zhang S, Zhang L, Wang Y, Li G, Bai R, Zhao H, Sun J. Cell-permeable PI3 kinase competitive peptide inhibits KIT mutant mediated tumorigenesis of gastrointestinal stromal tumor (GIST). Mol Biol Rep 2024; 51:98. [PMID: 38206538 DOI: 10.1007/s11033-023-09120-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Accepted: 12/06/2023] [Indexed: 01/12/2024]
Abstract
BACKGROUND Mutations in the receptor tyrosine kinase KIT are the main cause of gastrointestinal stromal tumor (GIST), and the KIT mutants mediated PI3 kinase activation plays a key role in the tumorigenesis of GIST. In this study, we aimed to block PI3 kinase activation by cell-permeable peptide and investigate its possible application in the treatment of GIST. METHODS AND RESULTS We designed cell-permeable peptides based on the binding domain of PI3 kinase subunit p85 to KIT or PI3 kinase subunit p110, respectively, in order to compete for the binding between p85 and KIT or p110 and therefore inhibit the activation of PI3 kinases mediated by KIT. The results showed that the peptide can penetrate the cells, and inhibit the activation of PI3 kinases, leading to reduced cell survival and cell proliferation mediated by KIT mutants in vitro. Treatment of mice carrying germline KIT/V558A mutation, which can develop GIST, with the peptide that can compete for the binding between p85 and p110, led to reduced tumorigenesis of GIST. The peptide can further enhance the inhibition of the tumor growth by imatinib which is used as the first line targeted therapy of GIST. CONCLUSIONS Our results showed that cell-permeable PI3 kinase competitive peptide can inhibit KIT-mediated PI3 kinase activation and tumorigenesis of GIST, providing a rationale to further test the peptide in the treatment of GIST and even other tumors with over-activation of PI3 kinases.
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Affiliation(s)
- Zongying Jiang
- NHC Key Laboratory of Metabolic Cardiovascular Diseases Research, Science and Technology Center, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China
| | - Yue Guo
- Key Laboratory for Regenerative Medicine, Ministry of Education, School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Jun Shi
- The Second Affiliated Hospital of Ningxia Medical University, Yinchuan, China
| | - Shaoting Zhang
- NHC Key Laboratory of Metabolic Cardiovascular Diseases Research, Science and Technology Center, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China
| | - Liangying Zhang
- NHC Key Laboratory of Metabolic Cardiovascular Diseases Research, Science and Technology Center, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China
| | - Yapeng Wang
- School of Nursing, Ningxia Medical University, Yinchuan, China
| | - Guofu Li
- Department of Pathology, The General Hospital of Ningxia Medical University, Yinchuan, China
| | - Ru Bai
- NHC Key Laboratory of Metabolic Cardiovascular Diseases Research, Science and Technology Center, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China
| | - Hui Zhao
- Key Laboratory for Regenerative Medicine, Ministry of Education, School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China.
| | - Jianmin Sun
- NHC Key Laboratory of Metabolic Cardiovascular Diseases Research, Science and Technology Center, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China.
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2
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Palamini P, Allouche EMD, Waser J. Iron-Catalyzed Synthesis of α-Azido α-Amino Esters via the Alkylazidation of Alkenes. Org Lett 2023; 25:6791-6795. [PMID: 37684011 PMCID: PMC10521020 DOI: 10.1021/acs.orglett.3c02153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Indexed: 09/10/2023]
Abstract
An iron-catalyzed alkylazidation of dehydroamino acids using peroxides as alkyl radical precursors is described. Non-natural azidated amino esters bearing an α-alkyl chain could be obtained in 18-94% yields using TMSN3 as an azide source. The obtained α-alkyl-α-azide α-amino esters could be further functionalized through cycloaddition or azide reduction with amide couplings to afford aminal-type peptides, α-triazolo amino acids, and tetrahydro-triazolopyridine, showing the great versatility of this now easily accessible class of amino acids.
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Affiliation(s)
- Pierre Palamini
- Laboratory of Catalysis and
Organic
Synthesis, Institut des Sciences et Ingénierie
Chimique, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Emmanuelle M. D. Allouche
- Laboratory of Catalysis and
Organic
Synthesis, Institut des Sciences et Ingénierie
Chimique, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and
Organic
Synthesis, Institut des Sciences et Ingénierie
Chimique, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
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3
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Hernández D, Porras M, Boto A. Conversion of Hydroxyproline "Doubly Customizable Units" to Hexahydropyrimidines: Access to Conformationally Constrained Peptides. J Org Chem 2023. [PMID: 37429014 PMCID: PMC10367070 DOI: 10.1021/acs.joc.3c00673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/12/2023]
Abstract
The efficient transformation of hydroxyproline "doubly customizable units" into rigid hexahydropyrimidine units takes place in good global yields and generates compounds of pharmaceutical interest. In particular, the process can readily provide access to peptidomimetics and peptides with reversed sequences or with valuable turns.
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Affiliation(s)
- Dácil Hernández
- Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Fco. Sánchez, 3, La Laguna, Tenerife 38206, Spain
| | - Marina Porras
- Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Fco. Sánchez, 3, La Laguna, Tenerife 38206, Spain
| | - Alicia Boto
- Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Fco. Sánchez, 3, La Laguna, Tenerife 38206, Spain
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4
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Nag A, Mafi A, Das S, Yu MB, Alvarez-Villalonga B, Kim SK, Su Y, Goddard WA, Heath JR. Stereochemical engineering yields a multifunctional peptide macrocycle inhibitor of Akt2 by fine-tuning macrocycle-cell membrane interactions. Commun Chem 2023; 6:95. [PMID: 37202473 DOI: 10.1038/s42004-023-00890-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 04/26/2023] [Indexed: 05/20/2023] Open
Abstract
Macrocycle peptides are promising constructs for imaging and inhibiting extracellular, and cell membrane proteins, but their use for targeting intracellular proteins is typically limited by poor cell penetration. We report the development of a cell-penetrant high-affinity peptide ligand targeted to the phosphorylated Ser474 epitope of the (active) Akt2 kinase. This peptide can function as an allosteric inhibitor, an immunoprecipitation reagent, and a live cell immunohistochemical staining reagent. Two cell penetrant stereoisomers were prepared and shown to exhibit similar target binding affinities and hydrophobic character but 2-3-fold different rates of cell penetration. Experimental and computational studies resolved that the ligands' difference in cell penetration could be assigned to their differential interactions with cholesterol in the membrane. These results expand the tool kit for designing new chiral-based cell-penetrant ligands.
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Affiliation(s)
- Arundhati Nag
- California Institute of Technology, Pasadena, CA, USA
- Clark University, Worcester, MA, USA
| | - Amirhossein Mafi
- Materials and Process Simulation Center (139-74), California Institute of Technology, Pasadena, CA, USA
| | - Samir Das
- California Institute of Technology, Pasadena, CA, USA
- Clark University, Worcester, MA, USA
| | - Mary Beth Yu
- California Institute of Technology, Pasadena, CA, USA
| | | | - Soo-Kyung Kim
- Materials and Process Simulation Center (139-74), California Institute of Technology, Pasadena, CA, USA
| | - Yapeng Su
- California Institute of Technology, Pasadena, CA, USA
- Institute for Systems Biology, Seattle, WA, USA
| | - William A Goddard
- Materials and Process Simulation Center (139-74), California Institute of Technology, Pasadena, CA, USA
| | - James R Heath
- California Institute of Technology, Pasadena, CA, USA.
- Institute for Systems Biology, Seattle, WA, USA.
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5
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Song T, Luo Y, Wang K, Wang B, Yuan Q, Zhang W. Nickel-Catalyzed Remote C(sp 3)–N/O Bond Formation of Alkenes with Unactivated Amines and Alcohols. ACS Catal 2023. [DOI: 10.1021/acscatal.3c00238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
Affiliation(s)
- Tao Song
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Yicong Luo
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Kuiyang Wang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Bingyi Wang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Qianjia Yuan
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Wanbin Zhang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
- College of Chemistry, Zhengzhou University, 75 Daxue Road, Zhengzhou 450052, China
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6
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Lee MF, Poh CL. Strategies to improve the physicochemical properties of peptide-based drugs. Pharm Res 2023; 40:617-632. [PMID: 36869247 DOI: 10.1007/s11095-023-03486-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 02/17/2023] [Indexed: 03/05/2023]
Abstract
Peptides are a rapid-growing class of therapeutics with unique and desirable physicochemical properties. Due to disadvantages such as low membrane permeability and susceptibility to proteolytic degradation, peptide-based drugs have limited bioavailability, a short half-life, and rapid in vivo elimination. Various strategies can be applied to improve the physicochemical properties of peptide-based drugs to overcome limitations such as limited tissue residence time, metabolic instability, and low permeability. Applied strategies including backbone modifications, side chain modifications, conjugation with polymers, modification of peptide termini, fusion to albumin, conjugation with the Fc portion of antibodies, cyclization, stapled peptides, pseudopeptides, cell-penetrating peptide conjugates, conjugation with lipids, and encapsulation in nanocarriers are discussed.
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Affiliation(s)
- Michelle Felicia Lee
- Centre for Virus and Vaccine Research, School of Medical and Life Sciences, Sunway University, 5, Jalan Universiti, Selangor 47500, Bandar Sunway, Malaysia
| | - Chit Laa Poh
- Centre for Virus and Vaccine Research, School of Medical and Life Sciences, Sunway University, 5, Jalan Universiti, Selangor 47500, Bandar Sunway, Malaysia.
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7
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Hu K, Wu W, Xie L, Geng H, Zhang Y, Hanyu M, Zhang L, Liu Y, Nagatsu K, Suzuki H, Guo J, Wu Y, Li Z, Wang F, Zhang M. Whole-body PET tracking of a d-dodecapeptide and its radiotheranostic potential for PD-L1 overexpressing tumors. Acta Pharm Sin B 2022; 12:1363-1376. [PMID: 35530129 PMCID: PMC9069398 DOI: 10.1016/j.apsb.2021.09.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 09/02/2021] [Accepted: 09/14/2021] [Indexed: 02/06/2023] Open
Abstract
Peptides that are composed of dextrorotary (d)-amino acids have gained increasing attention as a potential therapeutic class. However, our understanding of the in vivo fate of d-peptides is limited. This highlights the need for whole-body, quantitative tracking of d-peptides to better understand how they interact with the living body. Here, we used mouse models to track the movement of a programmed death-ligand 1 (PD-L1)-targeting d-dodecapeptide antagonist (DPA) using positron emission tomography (PET). More specifically, we profiled the metabolic routes of [64Cu]DPA and investigated the tumor engagement of [64Cu/68Ga]DPA in mouse models. Our results revealed that intact [64Cu/68Ga]DPA was primarily eliminated by the kidneys and had a notable accumulation in tumors. Moreover, a single dose of [64Cu]DPA effectively delayed tumor growth and improved the survival of mice. Collectively, these results not only deepen our knowledge of the in vivo fate of d-peptides, but also underscore the utility of d-peptides as radiopharmaceuticals.
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Affiliation(s)
- Kuan Hu
- Department of Advanced Nuclear Medicine Sciences, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba 263-8555, Japan
| | - Wenyu Wu
- Department of Nuclear Medicine, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
| | - Lin Xie
- Department of Advanced Nuclear Medicine Sciences, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba 263-8555, Japan
| | - Hao Geng
- State Key Laboratory of Chemical Oncogenomics, the School of Chemical Biology and Biotechnology, Peking University, Shenzhen Graduate School, Shenzhen 518055, China
| | - Yiding Zhang
- Department of Advanced Nuclear Medicine Sciences, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba 263-8555, Japan
| | - Masayuki Hanyu
- Department of Advanced Nuclear Medicine Sciences, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba 263-8555, Japan
| | - Lulu Zhang
- Department of Advanced Nuclear Medicine Sciences, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba 263-8555, Japan
| | - Yinghuan Liu
- State Key Laboratory of Chemical Oncogenomics, the School of Chemical Biology and Biotechnology, Peking University, Shenzhen Graduate School, Shenzhen 518055, China
| | - Kotaro Nagatsu
- Department of Advanced Nuclear Medicine Sciences, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba 263-8555, Japan
| | - Hisashi Suzuki
- Department of Advanced Nuclear Medicine Sciences, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba 263-8555, Japan
| | - Jialin Guo
- Rensselaer Polytechnic Institute, Troy, NY 12180, USA
| | - Yundong Wu
- State Key Laboratory of Chemical Oncogenomics, the School of Chemical Biology and Biotechnology, Peking University, Shenzhen Graduate School, Shenzhen 518055, China
- Institute of Chemical Biology, Shenzhen Bay Laboratory, Shenzhen 518038, China
- Corresponding authors. Tel./fax: +81 43 3823709 (Mingrong Zhang), +86 25 52271455 (Feng Wang), +86 755 26033616 (Zigang Li), +86 755 26611113 (Yundong Wu).
| | - Zigang Li
- State Key Laboratory of Chemical Oncogenomics, the School of Chemical Biology and Biotechnology, Peking University, Shenzhen Graduate School, Shenzhen 518055, China
- Pingshan Translational Medicine Center, Shenzhen Bay Laboratory, Shenzhen 518118, China
- Corresponding authors. Tel./fax: +81 43 3823709 (Mingrong Zhang), +86 25 52271455 (Feng Wang), +86 755 26033616 (Zigang Li), +86 755 26611113 (Yundong Wu).
| | - Feng Wang
- Department of Nuclear Medicine, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
- Corresponding authors. Tel./fax: +81 43 3823709 (Mingrong Zhang), +86 25 52271455 (Feng Wang), +86 755 26033616 (Zigang Li), +86 755 26611113 (Yundong Wu).
| | - Mingrong Zhang
- Department of Advanced Nuclear Medicine Sciences, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba 263-8555, Japan
- Corresponding authors. Tel./fax: +81 43 3823709 (Mingrong Zhang), +86 25 52271455 (Feng Wang), +86 755 26033616 (Zigang Li), +86 755 26611113 (Yundong Wu).
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8
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Paul B, Maji M, Panja D, Kundu S. Cobalt Catalyzed N‐Methylation of Amides using Methanol. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100678] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Bhaskar Paul
- Department of Chemistry Indian Institute of Technology Kanpur Kanpur 208016 Uttar Pradesh (U.P. India
- Department of Chemistry University of California at Riverside Riverside California 92521 United States
| | - Milan Maji
- Department of Chemistry Indian Institute of Technology Kanpur Kanpur 208016 Uttar Pradesh (U.P. India
| | - Dibyajyoti Panja
- Department of Chemistry Indian Institute of Technology Kanpur Kanpur 208016 Uttar Pradesh (U.P. India
| | - Sabuj Kundu
- Department of Chemistry Indian Institute of Technology Kanpur Kanpur 208016 Uttar Pradesh (U.P. India
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9
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Recent Applications of Retro-Inverso Peptides. Int J Mol Sci 2021; 22:ijms22168677. [PMID: 34445382 PMCID: PMC8395423 DOI: 10.3390/ijms22168677] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 08/09/2021] [Accepted: 08/10/2021] [Indexed: 12/14/2022] Open
Abstract
Natural and de novo designed peptides are gaining an ever-growing interest as drugs against several diseases. Their use is however limited by the intrinsic low bioavailability and poor stability. To overcome these issues retro-inverso analogues have been investigated for decades as more stable surrogates of peptides composed of natural amino acids. Retro-inverso peptides possess reversed sequences and chirality compared to the parent molecules maintaining at the same time an identical array of side chains and in some cases similar structure. The inverted chirality renders them less prone to degradation by endogenous proteases conferring enhanced half-lives and an increased potential as new drugs. However, given their general incapability to adopt the 3D structure of the parent peptides their application should be careful evaluated and investigated case by case. Here, we review the application of retro-inverso peptides in anticancer therapies, in immunology, in neurodegenerative diseases, and as antimicrobials, analyzing pros and cons of this interesting subclass of molecules.
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10
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F Nahhas A, F Nahhas A, J Webster T. Nanoscale pathogens treated with nanomaterial-like peptides: a platform technology appropriate for future pandemics. Nanomedicine (Lond) 2021; 16:1237-1254. [PMID: 33988037 PMCID: PMC8120868 DOI: 10.2217/nnm-2020-0447] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 03/29/2021] [Indexed: 01/13/2023] Open
Abstract
Viral infections are historically very difficult to treat. Although imperfect and time-consuming to develop, we do have some conventional vaccine and therapeutic approaches to stop viral spreading. Most importantly, all of this takes significant time while viruses continue to wreak havoc on our healthcare system. Furthermore, viral infections are accompanied by a weakened immune system which is often overlooked in antiviral drug strategies and requires additional drug development. In this review, for the first time, we touch on some promising alternative approaches to treat viral infections, specifically those focused on the use of platform nanomaterials with antiviral peptides. In doing so, this review presents a timely discussion of how we need to change our old way of treating viruses into one that can quickly meet the demands of COVID-19, as well as future pandemic-causing viruses, which will come.
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Affiliation(s)
- Alaa F Nahhas
- Biochemistry Department, College of Science, King Abdulaziz University, Jeddah 21589, KSA
| | - Alrayan F Nahhas
- Biochemistry Department, College of Science, King Abdulaziz University, Jeddah 21589, KSA
| | - Thomas J Webster
- Department of Chemical Engineering, College of Engineering, Northeastern University, Boston, MA 02115, USA
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11
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López R, Palomo C. N,N-Diacylaminals as Emerging Tools in Synthesis: From Peptidomimetics to Asymmetric Catalysis. Chemistry 2021; 27:20-29. [PMID: 32667706 DOI: 10.1002/chem.202002637] [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: 05/31/2020] [Revised: 07/12/2020] [Indexed: 12/26/2022]
Abstract
N,N-Diacylaminals are flexible molecular scaffolds that have commonly been utilized as amide surrogates in peptidomimetics. The singularities of this motif as an N-acyl imine equivalent and as hydrogen-bond donor have recently opened new synthetic opportunities, especially in the field of asymmetric catalysis. This concept article highlights this diverse synthetic potential and provides the elements necessary for further developments.
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Affiliation(s)
- Rosa López
- Departamento de Química Orgánica I, Facultad de Química, Universidad del País Vasco (UPV/EHU), Manuel de Lardizabal 3, 20018, San Sebastián, Spain
| | - Claudio Palomo
- Departamento de Química Orgánica I, Facultad de Química, Universidad del País Vasco (UPV/EHU), Manuel de Lardizabal 3, 20018, San Sebastián, Spain
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12
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Abstract
A wide range of methodologies for the preparation of organic azides has been reported in the literature for many decades, due to their interest as building blocks for different transformations and their applications in biology as well as in materials science. More recently, with the spread of the use of transition metal-catalyzed reactions, new perspectives have also materialized in azidation processes, especially concerning the azidation of C–H bonds and direct difunctionalization of multiple carbon-carbon bonds. In this review, special emphasis will be placed on reactions involving substrates bearing a leaving group, hydroazidation reactions and azidation reactions that proceed with the formation of more than one bond. Further reactions for the preparation of allyl and vinyl azides as well as for azidations involving the opening of a ring complete the classification of the material.
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13
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Abstract
Over the last 16 years, chiral phosphoric acids (CPAs) have been shown to be excellent asymmetric catalysts, very effectively used in constructing chiral molecules with high enantiocontrol. In 2010, Ishihara et al. discovered that chiral metal phosphate complexes (or salts) could be found in substantial quantities, as contaminates, in some reported CPA-catalyzed reactions (Hatano, M.; Moriyama, K.; Maki, T.; Ishihara, K. Angew. Chem., Int. Ed. 2010, 49, 3823-3826). These metal phosphates were shown to actually catalyze the reactions in addition to CPAs. In this work, we have investigated in depth a reaction first reported to be catalyzed by CPAs based on a vaulted bis-phenanthrol (VAPOL) backbone. We have found that VAPOL metal phosphates were, in fact, superior catalysts for this reaction. Upon optimization, a wide substrate scope, low catalyst loading, and mild conditions could provide intermolecular imine amidation reactions producing chiral N,N'-aminal products in high yields and with excellent ee values (up to >99% yield, >99% ee).
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Affiliation(s)
- Rui Cao
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, P. R. China
| | - Jon C Antilla
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, P. R. China.,School of Sciences, Zhejiang Sci-Tech University, Hangzhou 310018, P. R. China
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14
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Kaumaya PTP. B-cell epitope peptide cancer vaccines: a new paradigm for combination immunotherapies with novel checkpoint peptide vaccine. Future Oncol 2020; 16:1767-1791. [PMID: 32564612 PMCID: PMC7426751 DOI: 10.2217/fon-2020-0224] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Accepted: 05/26/2020] [Indexed: 12/22/2022] Open
Abstract
In light of the numerous US FDA-approved humanized monoclonal antibodies (mAbs) for cancer immunotherapy, it is surprising that the advancement of B-cell epitope vaccines designed to elicit a natural humoral polyclonal antibody response has not gained traction in the immune-oncology landscape. Passive immunotherapy with humanized mAbs (Trastuzumab [Herceptin®]; Pertuzumab [Perjeta®]) has provided clinical benefit to breast cancer patients, albeit with significant shortcomings including toxicity problems and resistance, high costs, sophisticated therapeutic regimen and long half-life. The role of B-cell humoral immunity in cancer is under appreciated and underdeveloped. We have advanced the idea of active immunotherapy with chimeric B-cell epitope peptides incorporating a 'promiscuous' T-cell epitope that elicits a polyclonal antibody response, which provides safe, cost-effective therapeutic advantage over mAbs. We have created a portfolio of validated B-cell peptide epitopes against multiple receptor tyrosine kinases (HER-1, HER-3, IGF-1R and VEGF). We have successfully translated two HER-2 combination B-cell peptide vaccines in Phase I and II clinical trials. We have recently developed an effective novel PD-1 vaccine. In this article, I will review our approaches and strategies that focus on B-cell epitope cancer vaccines.
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Affiliation(s)
- Pravin TP Kaumaya
- Department of Obstetrics & Gynecology, College of Medicine, Wexner Medical Center, The James Cancer Hospital & Solove Research Institute, The Comprehensive Cancer Center, The Ohio State University, Columbus, OH 43210, USA
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15
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Tsujihara T, Yamauchi H, Tamura S, Takehara T, Suzuki T, Kawano T. Diastereoselective direct amidation/aza-Michael cascade reaction to synthesize cis-1,3-disubstituted isoindolines. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152122] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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16
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Masri E, Ahsanullah, Accorsi M, Rademann J. Side-Chain Modification of Peptides Using a Phosphoranylidene Amino Acid. Org Lett 2020; 22:2976-2980. [PMID: 32223201 DOI: 10.1021/acs.orglett.0c00713] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The flexible variation of peptidomimetics is of great interest for the identification of optimized protein ligands. Here we present a general concept for introducing side-chain modifications into peptides using triarylphosphonium amino acids. Building blocks 4a and 4b are activated for amidation and incorporated into stable peptides. The obtained phosphoranylidene peptides undergo Wittig olefinations and 1,3-dipolar cycloaddition reactions, yielding peptidomimetics with vinyl ketones and 5-substituted 1,2,3-triazoles as non-native peptide side chains.
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Affiliation(s)
- Enaam Masri
- Department of Chemistry, Biology, and Pharmacy, Institute of Pharmacy/Medicinal Chemistry, Freie Universität Berlin, Königin-Luise-Strasse 2 + 4, 14195 Berlin, Germany
| | - Ahsanullah
- Department of Chemistry, Biology, and Pharmacy, Institute of Pharmacy/Medicinal Chemistry, Freie Universität Berlin, Königin-Luise-Strasse 2 + 4, 14195 Berlin, Germany.,Department of Chemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan
| | - Matteo Accorsi
- Department of Chemistry, Biology, and Pharmacy, Institute of Pharmacy/Medicinal Chemistry, Freie Universität Berlin, Königin-Luise-Strasse 2 + 4, 14195 Berlin, Germany
| | - Jörg Rademann
- Department of Chemistry, Biology, and Pharmacy, Institute of Pharmacy/Medicinal Chemistry, Freie Universität Berlin, Königin-Luise-Strasse 2 + 4, 14195 Berlin, Germany
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17
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Ge D, Wang ML, Wang X, Chu XQ. Iron-catalyzed C–O bond functionalization of butyrolactam derivatives with various N-/C-nucleophiles. NEW J CHEM 2020. [DOI: 10.1039/d0nj04548a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An iron-catalyzed C–O bond functionalization of butyrolactam derivatives with N-/C-nucleophiles to enable the synthesis of butyrolactam derivatives has been developed.
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Affiliation(s)
- Danhua Ge
- School of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing 211816
- China
| | - Mao-Lin Wang
- School of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing 211816
- China
| | - Xin Wang
- Hubei Province Geological Experimental Testing Center
- Wuhan
- China
| | - Xue-Qiang Chu
- School of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing 211816
- China
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18
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Chai Z, Wu T, Dai A, Huynh P, Koentgen F, Krippner G, Ren S, Cooper ME. Targeting the CDA1/CDA1BP1 Axis Retards Renal Fibrosis in Experimental Diabetic Nephropathy. Diabetes 2019; 68:395-408. [PMID: 30425061 DOI: 10.2337/db18-0712] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Accepted: 10/31/2018] [Indexed: 01/12/2023]
Abstract
Targeting cell division autoantigen 1 (CDA1) is postulated to attenuate the profibrotic actions of transforming growth factor-β in diabetic nephropathy. This study has identified a regulatory protein for CDA1 and has then used genetic and pharmacological approaches to test in vivo whether strategies to target this pathway would lead to reduced renal injury. A novel protein, named CDA1BP1 (CDA1 binding protein 1), was identified as critical in regulating the profibrotic activity of CDA1. Genetic deletion of CDA1BP1 attenuated key parameters of renal fibrosis in diabetic mice. Furthermore, a series of short synthetic CDA1BP1 peptides competitively inhibited CDA1-CDA1BP1 binding in vitro with a hybrid peptide, CHA-050, containing a 12mer CDA1BP1 peptide and a previously known "cell-penetrating peptide," dose-dependently reducing expression of collagens I and III in HK-2 cells. In vivo, a d-amino acid retro-inverso peptide, CHA-061, significantly attenuated diabetes-associated increases in the renal expression of genes involved in fibrotic and proinflammatory pathways. In a delayed intervention study, CHA-061 treatment reversed diabetes-associated molecular and pathological changes within the kidney. Specifically, CHA-061 significantly attenuated renal extracellular matrix accumulation and glomerular injury. Taken together, targeting the CDA1/CDA1BP1 axis is a safe, efficacious, and feasible approach to retard experimental diabetic nephropathy.
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Affiliation(s)
- Zhonglin Chai
- Department of Diabetes, Central Clinical School, Monash University, Melbourne, Victoria, Australia
| | - Tieqiao Wu
- Department of Diabetes, Central Clinical School, Monash University, Melbourne, Victoria, Australia
| | - Aozhi Dai
- Department of Diabetes, Central Clinical School, Monash University, Melbourne, Victoria, Australia
| | - Pacific Huynh
- Department of Diabetes, Central Clinical School, Monash University, Melbourne, Victoria, Australia
| | | | - Guy Krippner
- Department of Commercialization, Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia
| | - Shuting Ren
- Department of Diabetes, Central Clinical School, Monash University, Melbourne, Victoria, Australia
- Department of Pathology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Centre, Xi'an, People's Republic of China
| | - Mark E Cooper
- Department of Diabetes, Central Clinical School, Monash University, Melbourne, Victoria, Australia
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19
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Arranz-Gibert P, Prades R, Guixer B, Guerrero S, Araya E, Ciudad S, Kogan MJ, Giralt E, Teixidó M. HAI Peptide and Backbone Analogs-Validation and Enhancement of Biostability and Bioactivity of BBB Shuttles. Sci Rep 2018; 8:17932. [PMID: 30560894 PMCID: PMC6298966 DOI: 10.1038/s41598-018-35938-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Accepted: 11/09/2018] [Indexed: 01/03/2023] Open
Abstract
Low effectiveness and resistance to treatments are commonplace in disorders of the central nervous system (CNS). These issues concern mainly the blood-brain barrier (BBB), which preserves homeostasis in the brain and protects this organ from toxic molecules and biohazards by regulating transport through it. BBB shuttles—short peptides able to cross the BBB—are being developed to help therapeutics to cross this barrier. BBB shuttles can be discovered by massive exploration of chemical diversity (e.g. computational means, phage display) or rational design (e.g. derivatives from a known peptide/protein able to cross). Here we present the selection of a peptide shuttle (HAI) from several candidates and the subsequent in-depth in vitro and in vivo study of this molecule. In order to explore the chemical diversity of HAI and enhance its biostability, and thereby its bioactivity, we explored two new protease-resistant versions of HAI (i.e. the retro-D-version, and a version that was N-methylated at the most sensitive sites to enzymatic cleavage). Our results show that, while both versions of HAI are resistant to proteases, the retro-D-approach preserved better transport properties.
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Affiliation(s)
- Pol Arranz-Gibert
- Institute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology (BIST), Baldiri Reixac 10, Barcelona, E-08028, Spain
| | - Roger Prades
- Institute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology (BIST), Baldiri Reixac 10, Barcelona, E-08028, Spain
| | - Bernat Guixer
- Institute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology (BIST), Baldiri Reixac 10, Barcelona, E-08028, Spain
| | - Simón Guerrero
- Department of Pharmacological and Toxicological Chemistry, Faculty of Pharmaceutical Sciences, University of Chile, Sergio Livingstone, 1007, Independencia, Santiago, Chile.,Advanced Center for Chronic Diseases (ACCDiS), Sergio Livingstone, 1007, Independencia, Santiago, Chile
| | - Eyleen Araya
- Advanced Center for Chronic Diseases (ACCDiS), Sergio Livingstone, 1007, Independencia, Santiago, Chile.,Departamento de Ciencias Químicas, Facultad de Ciencias Exactas, Universidad Andres Bello, Av. Republica 275, Santiago, Chile
| | - Sonia Ciudad
- Institute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology (BIST), Baldiri Reixac 10, Barcelona, E-08028, Spain
| | - Marcelo J Kogan
- Department of Pharmacological and Toxicological Chemistry, Faculty of Pharmaceutical Sciences, University of Chile, Sergio Livingstone, 1007, Independencia, Santiago, Chile.,Advanced Center for Chronic Diseases (ACCDiS), Sergio Livingstone, 1007, Independencia, Santiago, Chile
| | - Ernest Giralt
- Institute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology (BIST), Baldiri Reixac 10, Barcelona, E-08028, Spain. .,Department of Inorganic and Organic Chemistry, University of Barcelona, Martí i Franquès 1-11, Barcelona, E-08028, Spain.
| | - Meritxell Teixidó
- Institute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology (BIST), Baldiri Reixac 10, Barcelona, E-08028, Spain.
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20
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Li ZL, Sun KK, Cai C. Nickel-Catalyzed Cross-Dehydrogenative Coupling of α-C(sp 3)-H Bonds in N-Methylamides with C(sp 3)-H Bonds in Cyclic Alkanes. Org Lett 2018; 20:6420-6424. [PMID: 30272983 DOI: 10.1021/acs.orglett.8b02736] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A nickel-catalyzed cross-dehydrogenative coupling reaction of α-C(sp3)-H bonds in N-methylamides with C(sp3)-H bonds from cyclic alkanes has been developed, which offers a cheap transition-metal-catalyzed C-H activation method for amides without the requirement for any extraneous directing group. This new strategy is highly selective and tolerates a variety of functional groups. Mechanistic investigations into the reaction process are also described in detail.
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Affiliation(s)
- Ze-Lin Li
- Chemical Engineering College , Nanjing University of Science and Technology , Nanjing 210094 , People's Republic of China
| | - Kang-Kang Sun
- Chemical Engineering College , Nanjing University of Science and Technology , Nanjing 210094 , People's Republic of China
| | - Chun Cai
- Chemical Engineering College , Nanjing University of Science and Technology , Nanjing 210094 , People's Republic of China.,Key Laboratory of Organofluorine Chemistry , Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 345 Lingling Lu , Shanghai 20032 , People's Republic of China
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21
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Dharman P, Babu V, Basha KA. A facile synthesis of novel 5‐substituted pyridine 2 carboxamide derivatives and their biological evaluation and 3D QSAR studies. J CHIN CHEM SOC-TAIP 2018. [DOI: 10.1002/jccs.201800035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Prabu Dharman
- Research & Development CentreBharathiar University Coimbatore India
| | | | - K. Anver Basha
- P.G. and Research Department of ChemistryC.Abdul Hakeem College Melvisharam India
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22
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Mukalel AJ, Evans BC, Kilchrist KV, Dailing EA, Burdette B, Cheung-Flynn J, Brophy CM, Duvall CL. Excipients for the lyoprotection of MAPKAP kinase 2 inhibitory peptide nano-polyplexes. J Control Release 2018; 282:110-119. [PMID: 29709529 DOI: 10.1016/j.jconrel.2018.04.045] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2018] [Revised: 04/25/2018] [Accepted: 04/26/2018] [Indexed: 12/11/2022]
Abstract
Herein, excipients are investigated to ameliorate the deleterious effects of lyophilization on peptide-polymer nano-polyplex (NP) morphology, cellular uptake, and bioactivity. The NPs are a previously-described platform technology for intracellular peptide delivery and are formulated from a cationic therapeutic peptide and the anionic, pH-responsive, endosomolytic polymer poly(propylacrylic acid) (PPAA). These NPs are effective when formulated and immediately used for delivery into cells and tissue, but they are not amenable to reconstitution following storage as a lyophilized powder due to aggregation. To develop a lyophilized NP format that facilitates longer-term storage and ease of use, MAPKAP kinase 2 inhibitory peptide-based NPs (MK2i-NPs) were prepared in the presence of a range of concentrations of the excipients sucrose, trehalose, and lactosucrose prior to lyophilization and storage. All excipients improved particle morphology post-lyophilization and significantly improved MK2i-NP uptake in human coronary artery smooth muscle cells relative to lyophilized NPs without excipient. In particular, MK2i-NPs lyophilized with 300 mM lactosucrose as an excipient demonstrated a 5.23 fold increase in cellular uptake (p < 0.001), a 2.52 fold increase in endosomal disruption (p < 0.05), and a 2.39 fold increase in ex vivo bioactivity (p < 0.01) compared to MK2i-NPs lyophilized without excipients. In sum, these data suggest that addition of excipients, particularly lactosucrose, maintains and even improves the uptake and therapeutic efficacy of peptide-polymer NPs post-lyophilization relative to freshly-made formulations. Thus, the use of excipients as lyoprotectants is a promising approach for the long-term storage of biotherapeutic NPs and poises this NP platform for clinical translation.
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Affiliation(s)
- Alvin J Mukalel
- Department of Biomedical Engineering, Vanderbilt University, 2301 Vanderbilt Place, PMB351826, Nashville, TN 37235, United States.
| | - Brian C Evans
- Department of Biomedical Engineering, Vanderbilt University, 2301 Vanderbilt Place, PMB351826, Nashville, TN 37235, United States.
| | - Kameron V Kilchrist
- Department of Biomedical Engineering, Vanderbilt University, 2301 Vanderbilt Place, PMB351826, Nashville, TN 37235, United States.
| | - Eric A Dailing
- Department of Biomedical Engineering, Vanderbilt University, 2301 Vanderbilt Place, PMB351826, Nashville, TN 37235, United States.
| | - Benjamin Burdette
- College of Pharmacy, University of Kentucky, 383 TODD Building, 789 South Limestone Street, Lexington, KY 40536, United States.
| | - Joyce Cheung-Flynn
- Division of Vascular Surgery, Department of Surgery, Vanderbilt University Medical Center, D-5237 Medical Center North, 1161 22nd Avenue South, Nashville, TN 37232, United States.
| | - Colleen M Brophy
- Division of Vascular Surgery, Department of Surgery, Vanderbilt University Medical Center, D-5237 Medical Center North, 1161 22nd Avenue South, Nashville, TN 37232, United States; Veterans Affairs Medical Center, VA Tennessee Valley Healthcare System, 1310 24th Avenue, South, Nashville, TN 37212, United States.
| | - Craig L Duvall
- Department of Biomedical Engineering, Vanderbilt University, 2301 Vanderbilt Place, PMB351826, Nashville, TN 37235, United States.
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23
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Arranz-Gibert P, Ciudad S, Seco J, García J, Giralt E, Teixidó M. Immunosilencing peptides by stereochemical inversion and sequence reversal: retro-D-peptides. Sci Rep 2018; 8:6446. [PMID: 29691418 PMCID: PMC5915530 DOI: 10.1038/s41598-018-24517-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Accepted: 03/28/2018] [Indexed: 12/13/2022] Open
Abstract
Peptides are experiencing a new era in medical research, finding applications ranging from therapeutics to vaccines. In spite of the promising properties of peptide pharmaceuticals, their development continues to be hindered by three weaknesses intrinsic to their structure, namely protease sensitivity, clearance through the kidneys, and immune system activation. Here we report on two retro-D-peptides (H2N-hrpyiah-CONH2 and H2N-pwvpswmpprht-CONH2), which are protease-resistant and retain the original BBB shuttle activity of the parent peptide but are much less immunogenic than the parent peptide. Hence, we envisage that retro-D-peptides, which display a similar topological arrangement as their parent peptides, will expand drug design and help to overcome factors that lead to the failure of peptide pharmaceuticals in pre- and clinical trials. Furthermore, we reveal requirements to avoid or elicit specific humoral responses to therapeutic peptides, which might have a strong impact in both vaccine design and peptide therapeutic agents.
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Affiliation(s)
- Pol Arranz-Gibert
- Institute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology (BIST), Baldiri Reixac 10, Barcelona, E-08028, Spain
| | - Sonia Ciudad
- Institute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology (BIST), Baldiri Reixac 10, Barcelona, E-08028, Spain
| | - Jesús Seco
- Institute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology (BIST), Baldiri Reixac 10, Barcelona, E-08028, Spain
| | - Jesús García
- Institute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology (BIST), Baldiri Reixac 10, Barcelona, E-08028, Spain
| | - Ernest Giralt
- Institute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology (BIST), Baldiri Reixac 10, Barcelona, E-08028, Spain.
- Department of Inorganic and Organic Chemistry, University of Barcelona, Martí i Franquès 1-11, Barcelona, E-08028, Spain.
| | - Meritxell Teixidó
- Institute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology (BIST), Baldiri Reixac 10, Barcelona, E-08028, Spain.
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24
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Koleoso OK, Elsegood MRJ, Teat SJ, Kimber MC. Photoredox Approach to N-Acyl-N'-aryl-N,N'-aminals Using Enamides and Their Conversion to γ-Lactams. Org Lett 2018; 20:1003-1006. [PMID: 29373031 DOI: 10.1021/acs.orglett.7b03946] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A photoredox catalytic approach to synthetically valuable N-acyl-N'-aryl-N,N'-aminals is described. This method uses the addition of a radical precursor to enamides, with subsequent interception of the cationic iminium intermediate with an arylamine. The reaction has been shown to be compatible with electron-rich and electron-deficient arylamines, and moderate to good levels of diastereoselectivity can be attained using a chiral enamide. Furthermore, the N-acyl-N'-aryl-N,N'-aminal reaction products can be readily cyclized, providing a novel synthetic route to valuable γ-lactams.
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Affiliation(s)
- Olusesan K Koleoso
- Department of Chemistry, Loughborough University , Loughborough, Leicestershire LE11 3TU, U.K
| | - Mark R J Elsegood
- Department of Chemistry, Loughborough University , Loughborough, Leicestershire LE11 3TU, U.K
| | - Simon J Teat
- ALS, Berkeley Laboratory , 1 Cyclotron Road, MS2-400, Berkeley, California 94720, United States
| | - Marc C Kimber
- Department of Chemistry, Loughborough University , Loughborough, Leicestershire LE11 3TU, U.K
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25
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Howard EL, Guzzardi N, Tsanova VG, Stika A, Patel B. Highly Efficient Copper-Catalyzed Amidation of Benzylic Hydrocarbons Under Neutral Conditions. European J Org Chem 2018. [DOI: 10.1002/ejoc.201701759] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Eva-Louise Howard
- School of Human Sciences; London Metropolitan University; 166-220 Holloway Road N7 8DB London UK
| | - Norman Guzzardi
- School of Human Sciences; London Metropolitan University; 166-220 Holloway Road N7 8DB London UK
| | - Viliyana G. Tsanova
- School of Human Sciences; London Metropolitan University; 166-220 Holloway Road N7 8DB London UK
| | - Angeliki Stika
- School of Human Sciences; London Metropolitan University; 166-220 Holloway Road N7 8DB London UK
| | - Bhaven Patel
- School of Human Sciences; London Metropolitan University; 166-220 Holloway Road N7 8DB London UK
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26
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Ribarič S. Peptides as Potential Therapeutics for Alzheimer's Disease. Molecules 2018; 23:E283. [PMID: 29385735 PMCID: PMC6017258 DOI: 10.3390/molecules23020283] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 01/26/2018] [Accepted: 01/28/2018] [Indexed: 12/22/2022] Open
Abstract
Intracellular synthesis, folding, trafficking and degradation of proteins are controlled and integrated by proteostasis. The frequency of protein misfolding disorders in the human population, e.g., in Alzheimer's disease (AD), is increasing due to the aging population. AD treatment options are limited to symptomatic interventions that at best slow-down disease progression. The key biochemical change in AD is the excessive accumulation of per-se non-toxic and soluble amyloid peptides (Aβ(1-37/44), in the intracellular and extracellular space, that alters proteostasis and triggers Aβ modification (e.g., by reactive oxygen species (ROS)) into toxic intermediate, misfolded soluble Aβ peptides, Aβ dimers and Aβ oligomers. The toxic intermediate Aβ products aggregate into progressively less toxic and less soluble protofibrils, fibrils and senile plaques. This review focuses on peptides that inhibit toxic Aβ oligomerization, Aβ aggregation into fibrils, or stabilize Aβ peptides in non-toxic oligomers, and discusses their potential for AD treatment.
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Affiliation(s)
- Samo Ribarič
- Institute of Pathophysiology, Faculty of Medicine, Zaloška 4, SI-1000 Ljubljana, Slovenia.
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27
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Sakurai K. A Peptide–Glycolipid Interaction Probed by Retroinverso Peptide Analogues. Chem Pharm Bull (Tokyo) 2018; 66:45-50. [DOI: 10.1248/cpb.c17-00455] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Kaori Sakurai
- Department of Biotechnology and Life Science, Tokyo University of Agriculture and Technology
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28
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Park SY, Liu Y, Oh JS, Kweon YK, Jeong YB, Duan M, Tan Y, Lee JW, Yan H, Song CE. Asymmetric Aminalization via Cation-Binding Catalysis. Chemistry 2017; 24:1020-1025. [DOI: 10.1002/chem.201703800] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Indexed: 12/12/2022]
Affiliation(s)
- Sang Yeon Park
- Department of Chemistry; Sungkyunkwan University; Suwon 440-746 Korea
| | - Yidong Liu
- Innovative Drug Research Centre; Chongqing University; Chongqing 401331 China
| | - Joong Suk Oh
- Department of Chemistry; Sungkyunkwan University; Suwon 440-746 Korea
| | - Yoo Kyung Kweon
- Department of Chemistry; Sungkyunkwan University; Suwon 440-746 Korea
| | - Yong Bok Jeong
- Department of Chemistry; Sungkyunkwan University; Suwon 440-746 Korea
| | - Mengying Duan
- Innovative Drug Research Centre; Chongqing University; Chongqing 401331 China
| | - Yu Tan
- Innovative Drug Research Centre; Chongqing University; Chongqing 401331 China
| | - Ji-Woong Lee
- Department of Chemistry; University of Copenhagen; Universitetsparken 5 2100 Copenhagen Denmark
| | - Hailong Yan
- Innovative Drug Research Centre; Chongqing University; Chongqing 401331 China
| | - Choong Eui Song
- Department of Chemistry; Sungkyunkwan University; Suwon 440-746 Korea
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29
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Yamagata N, Chen X, Zhou J, Li J, Du X, Xu B. Enzymatic self-assembly of an immunoreceptor tyrosine-based inhibitory motif (ITIM). Org Biomol Chem 2017; 15:5689-5692. [PMID: 28675212 DOI: 10.1039/c7ob01074e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Here we show the first example of an immunoreceptor tyrosine-based inhibitory motif (ITIM), LYYYYL, as well as its enantiomeric or retro-inverso peptide, to self-assemble in water via enzyme-instructed self-assembly. Upon enzymatic dephosphorylation, the phosphohexapeptides become hexapeptides, which self-assemble in water to result in supramolecular hydrogels. This work illustrates a new approach to design bioinspired soft materials from a less explored, but important pool of immunomodulatory peptides.
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Affiliation(s)
- Natsuko Yamagata
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, Massachusetts 02454, USA.
| | - Xiaoyi Chen
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, Massachusetts 02454, USA.
| | - Jie Zhou
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, Massachusetts 02454, USA.
| | - Jie Li
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, Massachusetts 02454, USA.
| | - Xuewen Du
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, Massachusetts 02454, USA.
| | - Bing Xu
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, Massachusetts 02454, USA.
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30
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Retro-inverso Urokinase Receptor Antagonists for the Treatment of Metastatic Sarcomas. Sci Rep 2017; 7:1312. [PMID: 28465589 PMCID: PMC5430962 DOI: 10.1038/s41598-017-01425-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Accepted: 03/29/2017] [Indexed: 11/12/2022] Open
Abstract
The development of metastases is a multistep process that requires the activation of physiological and biochemical processes that govern migration, invasion and entry of metastatic cells into blood vessels. The urokinase receptor (uPAR) promotes cell migration by interacting with the Formyl Peptide Receptors (FPRs). Since both uPAR and FPR1 are involved in tumor progression, the uPAR-FPR1 interaction is an attractive therapeutic target. We previously described peptide antagonists of the uPAR-FPR1 interaction that inhibited cell migration and angiogenesis. To develop enzyme-resistant analogues, we applied here the Retro-Inverso (RI) approach, whereby the topology of the side chains is maintained by inverting the sequence of the peptide and the chirality of all residues. Molecular dynamics suggests that peptide RI-3 adopts the turn structure typical of uPAR-FPR1 antagonists. Accordingly, RI-3 is a nanomolar competitor of N-formyl-Met-Leu-Phe for binding to FPR1 and inhibits migration, invasion, trans-endothelial migration of sarcoma cells and VEGF-triggered endothelial tube formation. When sarcoma cells were subcutaneously injected in nude mice, tumor size, intra-tumoral microvessel density, circulating tumor cells and pulmonary metastases were significantly reduced in animals treated daily with 6 mg/Kg RI-3 as compared to animals treated with vehicle only. Thus, RI-3 represents a promising lead for anti-metastatic drugs.
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31
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Kamada R, Nakagawa N, Oyama T, Sakaguchi K. Heterochiral Jun and Fos bZIP peptides form a coiled-coil heterodimer that is competent for DNA binding. J Pept Sci 2017; 23:644-649. [PMID: 28185384 DOI: 10.1002/psc.2985] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2016] [Revised: 01/11/2017] [Accepted: 01/28/2017] [Indexed: 12/25/2022]
Abstract
Coiled coils, consisting of at least two α-helices, have important roles in the regulation of transcription, cell differentiation, and cell growth. Peptides composed of d-amino acids (d-peptides) have received great attention for their potential in biomedical applications, because they give large diversity for the design of peptidyl drug and are more resistant to proteolytic digestion than l-peptides. However, the interactions between l-peptides/l-protein and d-peptides in the formation of complex are poorly understood. In this study, stereoisomer-specific peptides were constructed corresponding to regions of the basic-leucine-zipper domains of Jun and Fos proteins. basic-leucine-zipper domains consist of an N-terminal basic domain, which is responsible for DNA binding, and a C-terminal domain that enables homodimerization or heterodimerization via formation of a coiled-coil. By combining peptides with different stereochemistries, the d-l heterochiral Jun-Fos heterodimer formation induced DNA binding by the basic domains of Jun-Fos. Our study provides new insight into the interaction between l-peptide and d-peptide enantiomers for developing d-peptide materials and drugs. Copyright © 2017 European Peptide Society and John Wiley & Sons, Ltd.
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Affiliation(s)
- Rui Kamada
- Laboratory of Biological Chemistry, Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo, 060-0810, Japan
| | - Natsumi Nakagawa
- Laboratory of Biological Chemistry, Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo, 060-0810, Japan
| | - Taiji Oyama
- Laboratory of Biological Chemistry, Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo, 060-0810, Japan
| | - Kazuyasu Sakaguchi
- Laboratory of Biological Chemistry, Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo, 060-0810, Japan
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32
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Sampaio-Dias IE, Sousa CAD, Silva-Reis SC, Ribeiro S, García-Mera X, Rodríguez-Borges JE. Highly efficient one-pot assembly of peptides by double chemoselective coupling. Org Biomol Chem 2017; 15:7533-7542. [DOI: 10.1039/c7ob01544e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient and faster methodology for the assembly of oligopeptides by a three-step one-pot protocol with high yields and virtually no epimerization.
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Affiliation(s)
- Ivo E. Sampaio-Dias
- LAQV/REQUIMTE
- Department of Chemistry and Biochemistry
- Faculty of Sciences
- University of Porto
- 4169-007 Porto
| | - Carlos A. D. Sousa
- LAQV/REQUIMTE
- Department of Chemistry and Biochemistry
- Faculty of Sciences
- University of Porto
- 4169-007 Porto
| | - Sara C. Silva-Reis
- LAQV/REQUIMTE
- Department of Chemistry and Biochemistry
- Faculty of Sciences
- University of Porto
- 4169-007 Porto
| | - Sara Ribeiro
- LAQV/REQUIMTE
- Department of Chemistry and Biochemistry
- Faculty of Sciences
- University of Porto
- 4169-007 Porto
| | - Xerardo García-Mera
- Department of Organic Chemistry
- Faculty of Pharmacy
- University of Santiago de Compostela
- Santiago de Compostela
- Spain
| | - José E. Rodríguez-Borges
- LAQV/REQUIMTE
- Department of Chemistry and Biochemistry
- Faculty of Sciences
- University of Porto
- 4169-007 Porto
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Joy S, Sureshbabu VV, Periyasamy G. Computational Studies on Structural, Excitation, and Charge-Transfer Properties of Ureidopeptidomimetics. J Phys Chem B 2016; 120:6469-78. [PMID: 27314639 DOI: 10.1021/acs.jpcb.6b02210] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Peptides with ureido group enclosing backbones are considered peptidomimetics and are known for their higher stabilities, biocompatibilities, antibiotic, inhibitor, and charge-transduction activities. These peptidomimetics have some unique applications, which are quite different from those of natural peptides. Hence, it is imperative to appreciate their properties at a microscopic level. In this regard, this work outlines, in detail, the charge transfer (CT) properties, hole-migration dynamics, and electronic structures of various experimentally comprehended ureidopeptidomimetic models using density functional theory (DFT). Time-dependent DFT and complete active space self-consistent field computations on basic models provide the necessary evidence for the viability of CT from the end enfolding the ureido group to the other end with a carboxylate entity. This donor-to-acceptor CT has been reflected in excitation studies, in which the higher intensity band corresponds to CT from the π orbital of the ureido group to the π* orbital of the carboxylate entity. Further, hole-migration studies have shown that charge can evolve from the ureido end, whereas the hole generated at the carboxylate end does not migrate. However, hole migration has been reported to occur from both ends (amino and carboxylate ends) in glycine oligopeptides, and our studies show that the ability to transfer and migrate charge can be tuned by modifying the donor and acceptor functional groups in both the neutral and cationic charge states. We have analyzed the possibility of hole migration following ionization using DFT-based wave-packet propagation and found its occurrence on a ∼2-5 fs time scale, which reflects the charge-transduction ability of peptidomimetics.
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Affiliation(s)
- Sherin Joy
- Department of Chemistry, Central College Campus, Bangalore University , Bangalore 560 001, Karnataka, India
| | - Vommina V Sureshbabu
- Department of Chemistry, Central College Campus, Bangalore University , Bangalore 560 001, Karnataka, India
| | - Ganga Periyasamy
- Department of Chemistry, Central College Campus, Bangalore University , Bangalore 560 001, Karnataka, India
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35
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De Marco R, Mazzotti G, Dattoli SD, Baiula M, Spampinato S, Greco A, Gentilucci L. 5-aminomethyloxazolidine-2,4-dione hybrid α/β-dipeptide scaffolds as inductors of constrained conformations: Applications to the synthesis of integrin antagonists. Biopolymers 2016. [PMID: 26211418 DOI: 10.1002/bip.22704] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Peptidomimetics represent an attractive starting point for drug discovery programs; in particular, peptidomimetics that result from the incorporation of a heterocycle may take advantage of increased enzymatic stability and higher ability to reproduce the bioactive conformations of the parent peptides, resulting in enhanced therapeutic potential. Herein, we present mimetics of the α4β1 integrin antagonist BIO1211 (MPUPA-Leu-Asp-Val-Pro-OH), containing a aminomethyloxazolidine-2,4-dione scaffold (Amo). Interestingly, the retro-sequences PhCOAsp(OH)-Amo-APUMP including either (S)- or (R)-configured Amo displayed significant ability to inhibit the adhesion of α4β1 integrin expressing cells, and remarkable stability in mouse serum. Possibly, the conformational bias exerted by the Amo scaffold determined the affinity for the receptors. These peptidomimetics could be of interest for the development of small-molecule agents effective against inflammatory processes and correlated autoimmune diseases.
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Affiliation(s)
- Rossella De Marco
- Department of Chemistry "G. Ciamician", University of Bologna, via Selmi 2, Bologna, 40126, Italy
| | - Giacomo Mazzotti
- Department of Chemistry "G. Ciamician", University of Bologna, via Selmi 2, Bologna, 40126, Italy
| | - Samantha D Dattoli
- Department of Pharmacy and BioTechnology, University of Bologna, via Irnerio 48, Bologna, 40126, Italy
| | - Monica Baiula
- Department of Pharmacy and BioTechnology, University of Bologna, via Irnerio 48, Bologna, 40126, Italy
| | - Santi Spampinato
- Department of Pharmacy and BioTechnology, University of Bologna, via Irnerio 48, Bologna, 40126, Italy
| | - Arianna Greco
- Department of Chemistry "G. Ciamician", University of Bologna, via Selmi 2, Bologna, 40126, Italy
| | - Luca Gentilucci
- Department of Chemistry "G. Ciamician", University of Bologna, via Selmi 2, Bologna, 40126, Italy
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36
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Kaumaya PTP. A paradigm shift: Cancer therapy with peptide-based B-cell epitopes and peptide immunotherapeutics targeting multiple solid tumor types: Emerging concepts and validation of combination immunotherapy. Hum Vaccin Immunother 2016; 11:1368-86. [PMID: 25874884 DOI: 10.1080/21645515.2015.1026495] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
There is a recognizable and urgent need to speed the development and application of novel, more efficacious anti-cancer vaccine therapies that inhibit tumor progression and prevent acquisition of tumor resistance. We have created and established a portfolio of validated peptide epitopes against multiple receptor tyrosine kinases and we have identified the most biologically effective combinations of EGFR (HER-1), HER-2, HER-3, VEGF and IGF-1R peptide vaccines/mimics to selectively inhibit multiple receptors and signaling pathways. The strategy is based on the use of chimeric conformational B-cell epitope peptides incorporating "promiscuous" T-cell epitopes that afford the possibility of generating an enduring immune response, eliciting protein-reactive high-affinity anti-peptide antibodies as potential vaccines and peptide mimics that act as antagonists to receptor signaling that drive cancer metastasis. In this review we will summarize our ongoing studies based on the development of combinatorial immunotherapeutic strategies that act synergistically to enhance immune-mediated tumor killing aimed at addressing mechanisms of tumor resistance for several tumor types.
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Affiliation(s)
- Pravin T P Kaumaya
- a Department of Obstetrics and Gynecology; The Ohio State University Wexner Medical Center ; Columbus , OH , USA
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37
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De Marco R, Tolomelli A, Juaristi E, Gentilucci L. Integrin Ligands with α/β-Hybrid Peptide Structure: Design, Bioactivity, and Conformational Aspects. Med Res Rev 2016; 36:389-424. [PMID: 26777675 DOI: 10.1002/med.21383] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Integrins are cell surface receptors for proteins of the extracellular matrix and plasma-borne adhesive proteins. Their involvement in diverse pathologies prompted medicinal chemists to develop small-molecule antagonists, and very often such molecules are peptidomimetics designed on the basis of the short native ligand-integrin recognition motifs. This review deals with peptidomimetic integrin ligands composed of α- and β-amino acids. The roles exerted by the β-amino acid components are discussed in terms of biological activity, bioavailability, and selectivity. Special attention is paid to the synthetic accessibility and efficiency of conformationally constrained heterocyclic scaffolds incorporating α/β-amino acid span.
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Affiliation(s)
- Rossella De Marco
- Department of Chemistry "G. Ciamician,", University of Bologna, via Selmi 2, 40126, Bologna, Italy
| | - Alessandra Tolomelli
- Department of Chemistry "G. Ciamician,", University of Bologna, via Selmi 2, 40126, Bologna, Italy
| | - Eusebio Juaristi
- Department of Chemistry, Centro de Investigacion y de Estudios Avanzados del IPN, Avenida IPN 2508, esquina Ticoman, Mexico, D.F., 07360, Mexico
| | - Luca Gentilucci
- Department of Chemistry "G. Ciamician,", University of Bologna, via Selmi 2, 40126, Bologna, Italy
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38
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Podder D, Sasmal S, Maji K, Haldar D. Supramolecular tryptophan-zipper forms a tripeptide as a regular proton transporter. CrystEngComm 2016. [DOI: 10.1039/c5ce02005k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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39
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Wang ZA, Ding XZ, Tian CL, Zheng JS. Protein/peptide secondary structural mimics: design, characterization, and modulation of protein–protein interactions. RSC Adv 2016. [DOI: 10.1039/c6ra13976k] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This review discusses general aspects of novel artificial peptide secondary structure mimics for modulation of PPIs, their therapeutic applications and future prospects.
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Affiliation(s)
- Zhipeng A. Wang
- School of Life Sciences
- University of Science and Technology of China
- Hefei 230026
- China
- Department of Chemistry
| | - Xiaozhe Z. Ding
- School of Life Sciences
- Tsinghua University
- Beijing 100084
- China
- Department of Bioengineering
| | - Chang-Lin Tian
- School of Life Sciences
- University of Science and Technology of China
- Hefei 230026
- China
| | - Ji-Shen Zheng
- School of Life Sciences
- University of Science and Technology of China
- Hefei 230026
- China
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40
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New macrocyclic analogs of the natural histone deacetylase inhibitor FK228; design, synthesis and preliminary biological evaluation. Bioorg Med Chem 2015; 23:6785-93. [PMID: 26481659 DOI: 10.1016/j.bmc.2015.10.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Revised: 09/08/2015] [Accepted: 10/05/2015] [Indexed: 11/23/2022]
Abstract
Among the natural histone deacetylase inhibitors (HDACi), the bicyclic depsipeptide macrolactone FK228 stands out for its unique chemical structure and mechanism of action. In order to expand the chemical diversity, exploiting the FK228 peculiar structure, we have synthesized a collection of 24 simplified novel analogs. A first series consists of bicyclic macrolactones, where the carboxy terminus of the natural compound was substituted by peptidomimetic aminomethylphenylacetic acid derivatives. These analogs, 7a-i, showed submicromolar cytotoxic activity, even though very low inhibitory activity against HDAC enzymes, suggesting that most probably they behave with a mechanism different from the natural compound. One of the most active members in the group, 7g, was evaluated in vivo and exhibited significant antitumor activity. This evidence supports that the activity is unrelated to HDAC inhibition and these compounds represent a novel series of promising active agents. Another analog series consists of monocyclic macrolactones, 9a-c and 10a-d which lack the disulfide bridge and bear the protected sulfur on the linear external chain; they showed similar cytotoxic activities compared to the natural compound, but proved to be very sensitive to the nature of the sulfur protection. In fact, when the sulfur was protected by an 1-octanoyl residue, like in 9b, the product displayed a one digit nanomolar activity. The results provide evidence that our approach may be followed to develop novel series of FK228 analogs.
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41
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Abstract
The carbamate group is a key structural motif in many approved drugs and prodrugs. There is an increasing use of carbamates in medicinal chemistry and many derivatives are specifically designed to make drug-target interactions through their carbamate moiety. In this Perspective, we present properties and stabilities of carbamates, reagents and chemical methodologies for the synthesis of carbamates, and recent applications of carbamates in drug design and medicinal chemistry.
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Affiliation(s)
- Arun K. Ghosh
- Department of Chemistry and
Department of Medicinal Chemistry, Purdue
University, West Lafayette, Indiana 47907, United States
| | - Margherita Brindisi
- Department of Chemistry and
Department of Medicinal Chemistry, Purdue
University, West Lafayette, Indiana 47907, United States
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42
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β-Sheet interfering molecules acting against β-amyloid aggregation and fibrillogenesis. Bioorg Med Chem 2015; 23:1671-83. [DOI: 10.1016/j.bmc.2015.02.041] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Revised: 02/09/2015] [Accepted: 02/18/2015] [Indexed: 12/17/2022]
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43
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Synthetic and structural routes for the rational conversion of peptides into small molecules. Methods Mol Biol 2015; 1268:159-93. [PMID: 25555725 DOI: 10.1007/978-1-4939-2285-7_8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The demand for modified peptides with improved stability profiles and pharmacokinetic properties is driving extensive research effort in this field. The conversion of peptides into organic molecules, as traditional drugs, is a long and puzzled way. Many and versatile approaches have been described for designing peptide mimetics: the substitution of natural residues with modified amino acids and the rigidification and modification of the backbone are the main structural and chemical routes walked in medicinal chemistry. All of these strategies have been successfully applied to obtain active new compounds in molecular biology, drug discovery and design. Here we propose a panoramic review of the most common methods for the preparation of modified peptides and the most interesting findings of the last decade.
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44
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Md. Abdur Rauf S, Arvidsson PI, Albericio F, Govender T, Maguire GEM, Kruger HG, Honarparvar B. The effect of N-methylation of amino acids (Ac-X-OMe) on solubility and conformation: a DFT study. Org Biomol Chem 2015; 13:9993-10006. [DOI: 10.1039/c5ob01565k] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
N-Methylation of amino acid derivatives (Ac-X-OMe, X = Gly, Val, Leu, Ile, Phe, Met, Cys, Ser, Asp and His) leads to an increase in aqueous solubility, lipophilicity and lowering of the cis/trans amide conformational energy barrier (EA).
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Affiliation(s)
- Shah Md. Abdur Rauf
- Catalysis and Peptide Research Unit
- School of Health Sciences
- University of KwaZulu-Natal
- Durban 4001
- South Africa
| | - Per I. Arvidsson
- Catalysis and Peptide Research Unit
- School of Health Sciences
- University of KwaZulu-Natal
- Durban 4001
- South Africa
| | - Fernando Albericio
- Catalysis and Peptide Research Unit
- School of Health Sciences
- University of KwaZulu-Natal
- Durban 4001
- South Africa
| | - Thavendran Govender
- Catalysis and Peptide Research Unit
- School of Health Sciences
- University of KwaZulu-Natal
- Durban 4001
- South Africa
| | - Glenn E. M. Maguire
- Catalysis and Peptide Research Unit
- School of Health Sciences
- University of KwaZulu-Natal
- Durban 4001
- South Africa
| | - Hendrik G. Kruger
- Catalysis and Peptide Research Unit
- School of Health Sciences
- University of KwaZulu-Natal
- Durban 4001
- South Africa
| | - Bahareh Honarparvar
- Catalysis and Peptide Research Unit
- School of Health Sciences
- University of KwaZulu-Natal
- Durban 4001
- South Africa
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45
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Foy KC, Miller MJ, Moldovan N, Bozanovic T, Carson WE, Kaumaya PTP. Immunotherapy with HER-2 and VEGF peptide mimics plus metronomic paclitaxel causes superior antineoplastic effects in transplantable and transgenic mouse models of human breast cancer. Oncoimmunology 2014; 1:1004-1016. [PMID: 23170249 PMCID: PMC3494615 DOI: 10.4161/onci.21057] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
HER-2 and the vascular endothelial factor receptor (VEGF) represent validated targets for the therapy of multiple tumor types and inhibitors of these receptors have gained increasing importance in the clinic. In this context, novel bioactive agents associated with better therapeutic outcomes and improved safety profile are urgently required. Specifically engineered HER-2- and VEGF-derived peptides in combination with low-dose chemotherapy might provide a substantial impact on tumor metastasis and cancer progression. We tested the antitumor effects of HER-2 and VEGF peptide mimics in combination with metronomic paclitaxel in both PyMT and Balb/c murine model challenged with TUBO cells. The combination of low-dose paclitaxel and HER-2 or VEGF peptide mimics had greater inhibitory effects than either agent alone. Peptide treatment caused virtually no cardiotoxic effects, while paclitaxel and the anti-HER-2 antibody trastuzumab (Herceptin), exerted consistent cardiotoxicity. The combination regimen also promoted significant reductions in tumor burden and prolonged survival rates in both transgenic and transplantable tumor models. Tumor weights were significantly reduced in mice treated with HER-2 peptides alone, and even more in animals that received HER-2 peptide with low-dose paclitaxel, which alone had no significant effects on tumor growth in the transgenic model. Specifically engineered native peptide sequences from HER-2 and VEGF used in combination with metronomic paclitaxel demonstrate enhanced anticancer efficacy and an encouraging safety profile. This novel approach to targeted therapy may offer new avenues for the treatment of breast cancer and other solid tumors that overexpress HER-2 and VEGF.
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Affiliation(s)
- Kevin C Foy
- Department of Obstetrics and Gynecology; The Ohio State University Wexner Medical Center; Columbus, OH USA ; Department of Microbiology; The Ohio State University Wexner Medical Center; Columbus, OH USA
| | - Megan J Miller
- Department of Obstetrics and Gynecology; The Ohio State University Wexner Medical Center; Columbus, OH USA ; Department of Microbiology; The Ohio State University Wexner Medical Center; Columbus, OH USA
| | - Nicanor Moldovan
- Department of Internal Medicine; The Ohio State University Wexner Medical Center; Columbus, OH USA
| | - Tatjana Bozanovic
- Department of Gynecology and Obstetrics; School of Medicine; University of Belgrade; Belgrade, Serbia
| | - William E Carson
- James Cancer Hospital and Solove Research Institute and the Comprehensive Cancer Center; The Ohio State University; Columbus, OH USA
| | - Pravin T P Kaumaya
- Department of Obstetrics and Gynecology; The Ohio State University Wexner Medical Center; Columbus, OH USA ; Department of Microbiology; The Ohio State University Wexner Medical Center; Columbus, OH USA ; James Cancer Hospital and Solove Research Institute and the Comprehensive Cancer Center; The Ohio State University; Columbus, OH USA
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46
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Madhu C, Prabhu G, Pal R, Guru Row TN, Sureshbabu VV. Synthesis of Optically Active 2-Amino-1,3,4-oxadiazoles and their Hybrid Peptides. J Heterocycl Chem 2014. [DOI: 10.1002/jhet.2166] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Chilakapati Madhu
- Peptide Research Laboratory, Department of Studies in Chemistry, Central College Campus; Bangalore University; Dr. B. R. Ambedkar Veedhi Bangalore 560 001 India
| | - Girish Prabhu
- Peptide Research Laboratory, Department of Studies in Chemistry, Central College Campus; Bangalore University; Dr. B. R. Ambedkar Veedhi Bangalore 560 001 India
| | - Rumpa Pal
- Solid State and Structural Chemistry Unit; Indian Institute of Science; Bangalore 560012 India
| | - T. N. Guru Row
- Solid State and Structural Chemistry Unit; Indian Institute of Science; Bangalore 560012 India
| | - Vommina V. Sureshbabu
- Peptide Research Laboratory, Department of Studies in Chemistry, Central College Campus; Bangalore University; Dr. B. R. Ambedkar Veedhi Bangalore 560 001 India
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47
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Kaumaya PTP. Bridging oncology and immunology: expanding horizons with innovative peptide vaccines and peptidomimetics. Immunotherapy 2014; 5:1159-63. [PMID: 24188668 DOI: 10.2217/imt.13.128] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Affiliation(s)
- Pravin T P Kaumaya
- The Ohio State University Wexner Medical Center, Department of Obstetrics & Gynecology, 410 W 10th Avenue N729, Columbus, OH 43210, USA and The Comprehensive Cancer Center, The Ohio State University, 300 W 10th Avenue, Columbus, OH 43210, USA.
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48
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Acerra N, Kad NM, Griffith DA, Ott S, Crowther DC, Mason JM. Retro-inversal of Intracellular Selected β-Amyloid-Interacting Peptides: Implications for a Novel Alzheimer’s Disease Treatment. Biochemistry 2014; 53:2101-11. [DOI: 10.1021/bi5001257] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Nicola Acerra
- School
of Biological Sciences, University of Essex, Wivenhoe Park, Colchester CO4 3SQ, U.K
| | - Neil M. Kad
- School
of Biological Sciences, University of Essex, Wivenhoe Park, Colchester CO4 3SQ, U.K
| | - Douglas A. Griffith
- Department
of Genetics, University of Cambridge, Downing Site, Cambridge CB2 3EH, U.K
| | - Stanislav Ott
- Department
of Genetics, University of Cambridge, Downing Site, Cambridge CB2 3EH, U.K
| | - Damian C. Crowther
- Department
of Genetics, University of Cambridge, Downing Site, Cambridge CB2 3EH, U.K
| | - Jody M. Mason
- School
of Biological Sciences, University of Essex, Wivenhoe Park, Colchester CO4 3SQ, U.K
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49
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Maji K, Sarkar R, Bera S, Haldar D. A small molecule peptidomimetic of spider silk and webs. Chem Commun (Camb) 2014; 50:12749-52. [DOI: 10.1039/c4cc04475d] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
A peptidomimetic compound self-assembles to form spider silk-like soft fibers at 20 °C upon contact with air and the fibers can be used to mimic a spider web.
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Affiliation(s)
- Krishnendu Maji
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Kolkata
- Mohanpur, India
| | - Rajib Sarkar
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Kolkata
- Mohanpur, India
| | - Santu Bera
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Kolkata
- Mohanpur, India
| | - Debasish Haldar
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Kolkata
- Mohanpur, India
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50
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Québatte G, Kitas E, Seelig J. riDOM, a cell penetrating peptide. Interaction with phospholipid bilayers. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2013; 1838:968-77. [PMID: 24184424 DOI: 10.1016/j.bbamem.2013.10.017] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2013] [Revised: 10/15/2013] [Accepted: 10/21/2013] [Indexed: 01/12/2023]
Abstract
Melittin is an amphipathic peptide which has received much attention as a model peptide for peptide-membrane interactions. It is however not suited as a transfection agent due to its cytolytic and toxicological effects. Retro-inverso-melittin, when covalently linked to the lipid 1,2-dioleoyl-sn-glycero-3-phosphoethanolamine (riDOM), eliminates these shortcomings. The interaction of riDOM with phospholipid membranes was investigated with circular dichroism (CD) spectroscopy, dynamic light scattering, ζ-potential measurements, and high-sensitivity isothermal titration calorimetry. riDOM forms cationic nanoparticles with a diameter of ~13nm which are well soluble in water and bind with high affinity to DNA and lipid membranes. When dissolved in bilayer membranes, riDOM nanoparticles dissociate and form transient pores. riDOM-induced membrane leakiness is however much reduced compared to that of authentic melittin. The secondary structure of the ri-melittin is not changed when riDOM is transferred from water to the membrane and displays a large fraction of β-structure. The (31)P NMR spectrum of the nanoparticle is however transformed into a typical bilayer spectrum. The Gibbs free energy of riDOM binding to bilayer membranes is -8.0 to -10.0kcal/mol which corresponds to the partition energy of just one fatty acyl chain. Half of the hydrophobic surface of the riDOM lipid extension with its 2 oleic acyl chains is therefore involved in a lipid-peptide interaction. This packing arrangement guarantees a good solubility of riDOM both in the aqueous and in the membrane phase. The membrane binding enthalpy is small and riDOM binding is thus entropy-driven.
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Affiliation(s)
- Gabriela Québatte
- Biozentrum, University of Basel, Div. of Biophysical Chemistry, Klingelbergstrasse 50/70, CH-4056 Basel, Switzerland.
| | - Eric Kitas
- F. Hoffmann-La Roche Ltd., Pharma Research and Early Development Discovery Chemistry, Grenzacherstrasse 124, CH-4070 Basel, Switzerland.
| | - Joachim Seelig
- Biozentrum, University of Basel, Div. of Biophysical Chemistry, Klingelbergstrasse 50/70, CH-4056 Basel, Switzerland.
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