51
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Takeuchi A, Itoh H, Inoue M. 18 O/ 16 O-Encoding Strategy for Microscale Stereochemical Determination of Peptidic Natural Products. Chem Asian J 2021; 16:2447-2452. [PMID: 34190394 DOI: 10.1002/asia.202100674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 06/27/2021] [Indexed: 11/09/2022]
Abstract
The demand for more efficient methods of establishing the undetermined stereochemistries of peptidic natural products continues unabated. A new method for microscale stereochemical determination was devised by integrating solid-phase synthesis, split-and-mix randomization, 18 O/16 O-encoding of d/l-configurations, tandem mass spectrometry, and biological evaluation. Here we applied gramicidin A as the molecule for a blind test. Gramicidin A and its 31 diastereomers were randomly prepared in microgram scale with 18 O/16 O-stereochemical encoding and subjected to MS/MS-structural determination and cytotoxicity assay. Only the parent gramicidin A was selected from among the 32 stereoisomers, validating the high reliability of the present strategy.
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Affiliation(s)
- Aoi Takeuchi
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Hiroaki Itoh
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Masayuki Inoue
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
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52
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Zheng M, Pan M, Zhang W, Lin H, Wu S, Lu C, Tang S, Liu D, Cai J. Poly(α-l-lysine)-based nanomaterials for versatile biomedical applications: Current advances and perspectives. Bioact Mater 2021; 6:1878-1909. [PMID: 33364529 PMCID: PMC7744653 DOI: 10.1016/j.bioactmat.2020.12.001] [Citation(s) in RCA: 80] [Impact Index Per Article: 26.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 11/30/2020] [Accepted: 12/01/2020] [Indexed: 02/05/2023] Open
Abstract
Poly(α-l-lysine) (PLL) is a class of water-soluble, cationic biopolymer composed of α-l-lysine structural units. The previous decade witnessed tremendous progress in the synthesis and biomedical applications of PLL and its composites. PLL-based polymers and copolymers, till date, have been extensively explored in the contexts such as antibacterial agents, gene/drug/protein delivery systems, bio-sensing, bio-imaging, and tissue engineering. This review aims to summarize the recent advances in PLL-based nanomaterials in these biomedical fields over the last decade. The review first describes the synthesis of PLL and its derivatives, followed by the main text of their recent biomedical applications and translational studies. Finally, the challenges and perspectives of PLL-based nanomaterials in biomedical fields are addressed.
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Affiliation(s)
- Maochao Zheng
- Shantou University Medical College, 22 Xinling Road, Shantou, 515041, China
| | - Miao Pan
- Shantou University Medical College, 22 Xinling Road, Shantou, 515041, China
| | - Wancong Zhang
- The Second Affiliated Hospital of Shantou University Medical College, 69 Dongxiabei Road, Shantou, 515041, China
| | - Huanchang Lin
- Shantou University Medical College, 22 Xinling Road, Shantou, 515041, China
| | - Shenlang Wu
- Shantou University Medical College, 22 Xinling Road, Shantou, 515041, China
| | - Chao Lu
- College of Pharmacy, Jinan University, Guangzhou, 511443, China
| | - Shijie Tang
- The Second Affiliated Hospital of Shantou University Medical College, 69 Dongxiabei Road, Shantou, 515041, China
| | - Daojun Liu
- Shantou University Medical College, 22 Xinling Road, Shantou, 515041, China
| | - Jianfeng Cai
- Department of Chemistry, University of South Florida, Tampa, FL, 33620, USA
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53
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Webber MJ, Pashuck ET. (Macro)molecular self-assembly for hydrogel drug delivery. Adv Drug Deliv Rev 2021; 172:275-295. [PMID: 33450330 PMCID: PMC8107146 DOI: 10.1016/j.addr.2021.01.006] [Citation(s) in RCA: 75] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 12/29/2020] [Accepted: 01/04/2021] [Indexed: 01/15/2023]
Abstract
Hydrogels prepared via self-assembly offer scalable and tunable platforms for drug delivery applications. Molecular-scale self-assembly leverages an interplay of attractive and repulsive forces; drugs and other active molecules can be incorporated into such materials by partitioning in hydrophobic domains, affinity-mediated binding, or covalent integration. Peptides have been widely used as building blocks for self-assembly due to facile synthesis, ease of modification with bioactive molecules, and precise molecular-scale control over material properties through tunable interactions. Additional opportunities are manifest in stimuli-responsive self-assembly for more precise drug action. Hydrogels can likewise be fabricated from macromolecular self-assembly, with both synthetic polymers and biopolymers used to prepare materials with controlled mechanical properties and tunable drug release. These include clinical approaches for solubilization and delivery of hydrophobic drugs. To further enhance mechanical properties of hydrogels prepared through self-assembly, recent work has integrated self-assembly motifs with polymeric networks. For example, double-network hydrogels capture the beneficial properties of both self-assembled and covalent networks. The expanding ability to fabricate complex and precise materials, coupled with an improved understanding of biology, will lead to new classes of hydrogels specifically tailored for drug delivery applications.
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Affiliation(s)
- Matthew J Webber
- University of Notre Dame, Department of Chemical & Biomolecular Engineering, Notre Dame, IN 46556, USA.
| | - E Thomas Pashuck
- Lehigh University, Department of Bioengineering, Bethlehem, PA 18015, USA.
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54
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Zhang S, Guaglianone G, Morris MA, Yoo S, Howitz WJ, Xing L, Zheng JG, Jusuf H, Huizar G, Lin J, Kreutzer AG, Nowick JS. Expression of N-Terminal Cysteine Aβ 42 and Conjugation to Generate Fluorescent and Biotinylated Aβ 42. Biochemistry 2021; 60:1191-1200. [PMID: 33793198 DOI: 10.1021/acs.biochem.1c00105] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Fluorescent derivatives of the β-amyloid peptides (Aβ) are valuable tools for studying the interactions of Aβ with cells. Facile access to labeled expressed Aβ offers the promise of Aβ with greater sequence and stereochemical integrity, without impurities from amino acid deletion and epimerization. Here, we report methods for the expression of Aβ42 with an N-terminal cysteine residue, Aβ(C1-42), and its conjugation to generate Aβ42 bearing fluorophores or biotin. The methods rely on the hitherto unrecognized observation that expression of the Aβ(MC1-42) gene yields the Aβ(C1-42) peptide, because the N-terminal methionine is endogenously excised by Escherichia coli. Conjugation of Aβ(C1-42) with maleimide-functionalized fluorophores or biotin affords the N-terminally labeled Aβ42. The expression affords ∼14 mg of N-terminal cysteine Aβ from 1 L of bacterial culture. Subsequent conjugation affords ∼3 mg of labeled Aβ from 1 L of bacterial culture with minimal cost for labeling reagents. High-performance liquid chromatography analysis indicates the N-terminal cysteine Aβ to be >97% pure and labeled Aβ peptides to be 94-97% pure. Biophysical studies show that the labeled Aβ peptides behave like unlabeled Aβ and suggest that labeling of the N-terminus does not substantially alter the properties of the Aβ. We further demonstrate applications of the fluorophore-labeled Aβ peptides by using fluorescence microscopy to visualize their interactions with mammalian cells and bacteria. We anticipate that these methods will provide researchers convenient access to useful N-terminally labeled Aβ, as well as Aβ with an N-terminal cysteine that enables further functionalization.
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Affiliation(s)
- Sheng Zhang
- Department of Chemistry, University of California-Irvine, Irvine, California 92697-2025, United States
| | - Gretchen Guaglianone
- Department of Chemistry, University of California-Irvine, Irvine, California 92697-2025, United States
| | - Michael A Morris
- Department of Chemistry, University of California-Irvine, Irvine, California 92697-2025, United States
| | - Stan Yoo
- Department of Chemistry, University of California-Irvine, Irvine, California 92697-2025, United States
| | - William J Howitz
- Department of Chemistry, University of California-Irvine, Irvine, California 92697-2025, United States
| | - Li Xing
- Irvine Materials Research Institute (IMRI), University of California-Irvine, Irvine, California 92697-2575, United States
| | - Jian-Guo Zheng
- Irvine Materials Research Institute (IMRI), University of California-Irvine, Irvine, California 92697-2575, United States
| | - Hannah Jusuf
- Department of Chemistry, University of California-Irvine, Irvine, California 92697-2025, United States
| | - Grace Huizar
- Department of Chemistry, University of California-Irvine, Irvine, California 92697-2025, United States
| | - Jonathan Lin
- Department of Chemistry, University of California-Irvine, Irvine, California 92697-2025, United States
| | - Adam G Kreutzer
- Department of Chemistry, University of California-Irvine, Irvine, California 92697-2025, United States
| | - James S Nowick
- Department of Chemistry, University of California-Irvine, Irvine, California 92697-2025, United States.,Department of Pharmaceutical Sciences, University of California-Irvine, Irvine, California 92697-2025, United States
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55
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Sørensen KK, Mishra NK, Paprocki MP, Mehrotra A, Jensen KJ. High-Performance Reversed-Phase Flash Chromatography Purification of Peptides and Chemically Modified Insulins. Chembiochem 2021; 22:1818-1822. [PMID: 33443297 DOI: 10.1002/cbic.202000826] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 01/12/2021] [Indexed: 12/21/2022]
Abstract
Preparative reversed-phase HPLC is the established method for the purification of peptides, but has significant limitations. We systematically investigated the use of high-performance reversed-phase flash chromatography (HPFC) to rapidly purify laboratory-scale quantities of crude, synthetic peptides and chemically modified insulins. We demonstrated these methods for a diverse set of peptides, including short, medium, and long peptides. Depending on the purity profile of the peptide, HPFC can be used either as the sole purification method, or as a pre-purification method prior to final HPLC purification. Furthermore, HPFC is suitable for the purification of peptides that are not fully in solution. We provide guidelines for the HPFC of synthetic peptides and small proteins, including the choice of columns, eluents, and gradients. We believe that HPFC is a valuable alternative to HPLC purification of peptides and small proteins.
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Affiliation(s)
- Kasper K Sørensen
- Department of Chemistry, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg, Denmark
| | - Narendra K Mishra
- Department of Chemistry, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg, Denmark
| | - Maciej P Paprocki
- Department of Chemistry, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg, Denmark
| | | | - Knud J Jensen
- Department of Chemistry, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg, Denmark
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56
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Saadi S, Ghazali HM, Saari N, Abdulkarim SM. The structural reconformation of peptides in enhancing functional and therapeutic properties: Insights into their solid state crystallizations. Biophys Chem 2021; 273:106565. [PMID: 33780688 DOI: 10.1016/j.bpc.2021.106565] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Revised: 02/09/2021] [Accepted: 02/19/2021] [Indexed: 01/05/2023]
Abstract
Therapeutic peptides derived proteins with alpha-reconformation states like antibody shape have shown potential effects in combating terrible diseases linked with earlier signs of angiogensis, mutagenesis and transgenesis. Alpha reconformation in material design refers to the folding of the peptide chains and their transitions under reversible chemical bonds of disulfide chemical bridges and further non-covalence lesions. Thus, the rational design of signal peptides into alpha-helix is intended in increasing the defending effects of peptides into cores like adjuvant antibiotic and/or vaccines. Thereby, the signal peptides are able in displaying multiple eradicating regions by changing crystal-depositions and deviation angles. These types of molecular structures could have multiple advantages in tracing disease syndromes and impurities by increasing the host defense against the fates of pathogens and viruses, eventually leading to the loss in signaling by increasing peptide susceptibility levels to folding and unfolding and therefore, formation of transgenic peptide models. Alpha reconformation peptides is aimed in triggering as well as other regulatory functions such as remodulating metabolic chain disorders of lipolysis and glucolysis by increasing the insulin and leptin resistance for best lipid storages and lipoprotein density distributions.
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Affiliation(s)
- Sami Saadi
- Institut de la Nutrition, de l'Alimentation et des Technologies Agro-alimentaires INATAA 25017, Université Frères Mentouri, Constantine 1, Algeria; Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia.
| | - Hasanah Mohd Ghazali
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| | - Nazamid Saari
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| | - Sabo Mohammed Abdulkarim
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
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57
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Kamiya K, Miura K, Itoh H, Inoue M. Divergent Solid‐Phase Synthesis and Biological Evaluation of Yaku'amide B and Its Seven
E
/
Z
Isomers. Chemistry 2020; 27:1088-1093. [DOI: 10.1002/chem.202003858] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Indexed: 12/15/2022]
Affiliation(s)
- Koichi Kamiya
- Graduate School of Pharmaceutical Sciences The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan
| | - Kensuke Miura
- Graduate School of Pharmaceutical Sciences The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan
| | - Hiroaki Itoh
- Graduate School of Pharmaceutical Sciences The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan
| | - Masayuki Inoue
- Graduate School of Pharmaceutical Sciences The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan
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58
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Tan Y, Wu H, Wei T, Li X. Chemical Protein Synthesis: Advances, Challenges, and Outlooks. J Am Chem Soc 2020; 142:20288-20298. [PMID: 33211477 DOI: 10.1021/jacs.0c09664] [Citation(s) in RCA: 67] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Contemporary chemical protein synthesis has been dramatically advanced over the past few decades, which has enabled chemists to reach the landscape of synthetic biomacromolecules. Chemical synthesis can produce synthetic proteins with precisely controlled structures which are difficult or impossible to obtain via gene expression systems. Herein, we summarize the key enabling ligation technologies, major strategic developments, and some selected representative applications of synthetic proteins and provide an outlook for future development.
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Affiliation(s)
- Yi Tan
- Department of Chemistry, State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Hong Kong, P. R. China SAR
| | - Hongxiang Wu
- Department of Chemistry, State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Hong Kong, P. R. China SAR
| | - Tongyao Wei
- Department of Chemistry, State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Hong Kong, P. R. China SAR
| | - Xuechen Li
- Department of Chemistry, State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Hong Kong, P. R. China SAR
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59
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Zhang J, Liu D, Saikam V, Gadi MR, Gibbons C, Fu X, Song H, Yu J, Kondengaden SM, Wang PG, Wen L. Machine-Driven Chemoenzymatic Synthesis of Glycopeptide. Angew Chem Int Ed Engl 2020; 59:19825-19829. [PMID: 32677091 PMCID: PMC7733604 DOI: 10.1002/anie.202001124] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 06/18/2020] [Indexed: 12/28/2022]
Abstract
Historically, researchers have put considerable effort into developing automation systems to prepare natural biopolymers such as peptides and oligonucleotides. The availability of such mature systems has significantly advanced the development of natural science. Over the past twenty years, breakthroughs in automated synthesis of oligosaccharides have also been achieved. A machine-driven platform for glycopeptide synthesis by a reconstructed peptide synthesizer is described. The designed platform is based on the use of an amine-functionalized silica resin to facilitate the chemical synthesis of peptides in organic solvent as well as the enzymatic synthesis of glycan epitopes in the aqueous phase in a single reaction vessel. Both syntheses were performed by a peptide synthesizer in a semiautomated manner.
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Affiliation(s)
- Jiabin Zhang
- Department of Chemistry, Georgia State University, Atlanta, GA, 30303, USA
| | - Ding Liu
- Department of Chemistry, Georgia State University, Atlanta, GA, 30303, USA
| | - Varma Saikam
- Department of Chemistry, Georgia State University, Atlanta, GA, 30303, USA
| | - Madhusudhan R Gadi
- Department of Chemistry, Georgia State University, Atlanta, GA, 30303, USA
| | | | - Xuan Fu
- Department of Chemistry, Georgia State University, Atlanta, GA, 30303, USA
| | - Heliang Song
- Department of Chemistry, Georgia State University, Atlanta, GA, 30303, USA
| | - Jin Yu
- Imperial College London, Du Cane Road, London, W12 0NN, UK
| | | | - Peng G Wang
- Department of Chemistry, Georgia State University, Atlanta, GA, 30303, USA
- School of Medicine, Southern University of Science and Technology, Shenzhen, China
| | - Liuqing Wen
- Department of Chemistry, Georgia State University, Atlanta, GA, 30303, USA
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
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60
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Takada Y, Itoh H, Paudel A, Panthee S, Hamamoto H, Sekimizu K, Inoue M. Discovery of gramicidin A analogues with altered activities by multidimensional screening of a one-bead-one-compound library. Nat Commun 2020; 11:4935. [PMID: 33004797 PMCID: PMC7531004 DOI: 10.1038/s41467-020-18711-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Accepted: 09/08/2020] [Indexed: 01/08/2023] Open
Abstract
Gramicidin A (1) is a peptide antibiotic that disrupts the transmembrane ion concentration gradient by forming an ion channel in a lipid bilayer. Although long used clinically, it is limited to topical application because of its strong hemolytic activity and mammalian cytotoxicity, likely arising from the common ion transport mechanism. Here we report an integrated high-throughput strategy for discovering analogues of 1 with altered biological activity profiles. The 4096 analogue structures are designed to maintain the charge-neutral, hydrophobic, and channel forming properties of 1. Synthesis of the analogues, tandem mass spectrometry sequencing, and 3 microscale screenings enable us to identify 10 representative analogues. Re-synthesis and detailed functional evaluations find that all 10 analogues share a similar ion channel function, but have different cytotoxic, hemolytic, and antibacterial activities. Our large-scale structure-activity relationship studies reveal the feasibility of developing analogues of 1 that selectively induce toxicity toward target organisms. The strong hemolytic activity and mammalian cytotoxicity of gramicidin A, a peptide antibiotic, has hindered its non-topical clinical application. Here, the authors report a high-throughput strategy for the discovery of gramicidin A analogues with altered biological activity profiles.
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Affiliation(s)
- Yuri Takada
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Hiroaki Itoh
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Atmika Paudel
- Teikyo University Institute of Medical Mycology, 359 Otsuka, Hachioji, Tokyo, 192-0395, Japan
| | - Suresh Panthee
- Teikyo University Institute of Medical Mycology, 359 Otsuka, Hachioji, Tokyo, 192-0395, Japan
| | - Hiroshi Hamamoto
- Teikyo University Institute of Medical Mycology, 359 Otsuka, Hachioji, Tokyo, 192-0395, Japan
| | - Kazuhisa Sekimizu
- Teikyo University Institute of Medical Mycology, 359 Otsuka, Hachioji, Tokyo, 192-0395, Japan
| | - Masayuki Inoue
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.
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61
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Zieleniewski F, Woolfson DN, Clayden J. Automated solid-phase concatenation of Aib residues to form long, water-soluble, helical peptides. Chem Commun (Camb) 2020; 56:12049-12052. [PMID: 32902536 DOI: 10.1039/d0cc04698a] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Iterative coupling of 2-aminoisobutyric acid (Aib) has been achieved rapidly and efficiently using automated solid-phase peptide synthesis, employing diisopropylcarbodiimide (DIC) in the presence of ethyl cyanohydroxyiminoacetate (Oxyma). This method has allowed the first total synthesis of the fungal antibiotic Cephaibol D, and enabled the synthesis of water-soluble oligomers of Aib containing up to an unprecedented sequence of 17 consecutive Aib residues. Conformational analysis of the Aib oligomers in aqueous solution shows a length dependence in their CD spectra, with oligomers of more than 14 Aib residues apparently adopting structured helical conformations.
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Affiliation(s)
- Francis Zieleniewski
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK.
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62
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Kawasaki T, Yamaguchi Y, Ueda T, Ishikawa Y, Yaji T, Ohta T, Tsukiyama K, Idehara T, Saiki M, Tani M. Irradiation effect of a submillimeter wave from 420 GHz gyrotron on amyloid peptides in vitro. BIOMEDICAL OPTICS EXPRESS 2020; 11:5341-5351. [PMID: 33014618 PMCID: PMC7510884 DOI: 10.1364/boe.395218] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 08/07/2020] [Accepted: 08/07/2020] [Indexed: 06/11/2023]
Abstract
On using the far-infrared radiation system, whether the irradiation effect is thermal or non-thermal is controversial. We irradiated amyloid peptides that are causal factors for amyloidosis by using a submillimeter wave from 420 GHz gyrotron. Fluorescence reagent assay, optical and electron microscopies, and synchrotron-radiation infrared microscopy showed that the irradiation increased the fibrous conformation of peptides at room temperature for 30 min. The temperature increase on the sample was only below 5 K, and a simple heating up to 318 K hardly induced the fibril formation. Therefore, the amyloid aggregation was driven by the far-infrared radiation with little thermal effect.
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Affiliation(s)
- Takayasu Kawasaki
- IR-FEL Research Center, Research Institute for Science and Technology, Organization for Research Advancement, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Yuusuke Yamaguchi
- Research Center for Development of Far-Infrared Region, University of Fukui, 3-9-1 Bunkyo, Fukui, Fukui 910-8507, Japan
| | - Tomomi Ueda
- Department of Applied Chemistry, Faculty of Engineering, Sanyo-Onoda City University, 1-1-1 Daigakudori, Sanyo-Onoda, Yamaguchi 756-0884, Japan
| | - Yuya Ishikawa
- Research Center for Development of Far-Infrared Region, University of Fukui, 3-9-1 Bunkyo, Fukui, Fukui 910-8507, Japan
| | - Toyonari Yaji
- SR Center, Research Organization of Science and Technology, Ritsumeikan University, 1-1-1 Noji-Higasi, Kusatsu, Shiga 525-8577, Japan
| | - Toshiaki Ohta
- SR Center, Research Organization of Science and Technology, Ritsumeikan University, 1-1-1 Noji-Higasi, Kusatsu, Shiga 525-8577, Japan
| | - Koichi Tsukiyama
- IR-FEL Research Center, Research Institute for Science and Technology, Organization for Research Advancement, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Toshitaka Idehara
- Research Center for Development of Far-Infrared Region, University of Fukui, 3-9-1 Bunkyo, Fukui, Fukui 910-8507, Japan
| | - Masatoshi Saiki
- Department of Applied Chemistry, Faculty of Engineering, Sanyo-Onoda City University, 1-1-1 Daigakudori, Sanyo-Onoda, Yamaguchi 756-0884, Japan
| | - Masahiko Tani
- Research Center for Development of Far-Infrared Region, University of Fukui, 3-9-1 Bunkyo, Fukui, Fukui 910-8507, Japan
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63
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Zhang J, Liu D, Saikam V, Gadi MR, Gibbons C, Fu X, Song H, Yu J, Kondengaden SM, Wang PG, Wen L. Machine‐Driven Chemoenzymatic Synthesis of Glycopeptide. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202001124] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Jiabin Zhang
- Department of Chemistry Georgia State University Atlanta GA 30303 USA
| | - Ding Liu
- Department of Chemistry Georgia State University Atlanta GA 30303 USA
| | - Varma Saikam
- Department of Chemistry Georgia State University Atlanta GA 30303 USA
| | | | | | - Xuan Fu
- Department of Chemistry Georgia State University Atlanta GA 30303 USA
| | - Heliang Song
- Department of Chemistry Georgia State University Atlanta GA 30303 USA
| | - Jin Yu
- Imperial College London Du Cane Road London W12 0NN UK
| | | | - Peng G. Wang
- Department of Chemistry Georgia State University Atlanta GA 30303 USA
- School of Medicine Southern University of Science and Technology Shenzhen China
| | - Liuqing Wen
- Department of Chemistry Georgia State University Atlanta GA 30303 USA
- Shanghai Institute of Materia Medica Chinese Academy of Sciences Shanghai 201203 China
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64
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Ghosh A, Chattopadhyay SK. Microwave-mediated Synthesis of Medium Ring-sized Heterocyclic Compounds. CURRENT MICROWAVE CHEMISTRY 2020. [DOI: 10.2174/2213335607666200226101602] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Many medium ring-sized heterocyclic motifs are found in naturally occurring compounds
of significant biological activity which led to the investigation of the biological activity of simpler
heterocyclic compounds accommodating these ring systems. Therefore, the development of newer
synthetic methodologies to access such ring systems has remained an important activity over the last
few decades. However, common methods of their synthesis are usually associated with thermodynamic
disadvantages. Many metal-mediated transformations e.g., Heck reaction, Suzuki reaction, etc.
tend to overcome some of these effects but at the cost of environmental disadvantages. In recent
years, several green chemical techniques have found useful applications in the synthesis of such ring
systems. In particular, the use of microwave technology has provided better opportunities. The present
review attempts to highlight many synthetic approaches developed for the synthesis of such heterocyclic
scaffolds of pharmacological interest involving condensation reaction, coupling reaction,
Multi-component reaction, Cyclo-addition reaction, Dipolar cycloaddition reaction, etc. An emphasis
has also been given on the distinct advantages offered by microwave application over classical approaches,
wherever such knowledge is available.
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Affiliation(s)
- Amrita Ghosh
- Department of Chemistry, University of Kalyani Kalyani-741235, West Bengal, India
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65
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Knauer S, Koch N, Uth C, Meusinger R, Avrutina O, Kolmar H. Sustainable Peptide Synthesis Enabled by a Transient Protecting Group. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202003676] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Sascha Knauer
- Sulfotools GmbH In der Niederwiesen 24a 64291 Darmstadt Germany
- Institute for Organic Chemistry and Biochemistry TU Darmstadt Alarich-Weiss-Strasse 4 64287 Darmstadt Germany
| | - Niklas Koch
- Sulfotools GmbH In der Niederwiesen 24a 64291 Darmstadt Germany
| | - Christina Uth
- Sulfotools GmbH In der Niederwiesen 24a 64291 Darmstadt Germany
| | - Reinhard Meusinger
- Institute for Organic Chemistry and Biochemistry TU Darmstadt Alarich-Weiss-Strasse 4 64287 Darmstadt Germany
| | - Olga Avrutina
- Institute for Organic Chemistry and Biochemistry TU Darmstadt Alarich-Weiss-Strasse 4 64287 Darmstadt Germany
| | - Harald Kolmar
- Institute for Organic Chemistry and Biochemistry TU Darmstadt Alarich-Weiss-Strasse 4 64287 Darmstadt Germany
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66
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67
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Knauer S, Koch N, Uth C, Meusinger R, Avrutina O, Kolmar H. Sustainable Peptide Synthesis Enabled by a Transient Protecting Group. Angew Chem Int Ed Engl 2020; 59:12984-12990. [PMID: 32324944 PMCID: PMC7496111 DOI: 10.1002/anie.202003676] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Indexed: 01/22/2023]
Abstract
The growing interest in synthetic peptides has prompted the development of viable methods for their sustainable production. Currently, large amounts of toxic solvents are required for peptide assembly from protected building blocks, and switching to water as a reaction medium remains a major hurdle in peptide chemistry. We report an aqueous solid‐phase peptide synthesis strategy that is based on a water‐compatible 2,7‐disulfo‐9‐fluorenylmethoxycarbonyl (Smoc) protecting group. This approach enables peptide assembly under aqueous conditions, real‐time monitoring of building block coupling, and efficient postsynthetic purification. The procedure for the synthesis of all natural and several non‐natural Smoc‐protected amino acids is described, as well as the assembly of 22 peptide sequences and the fundamental issues of SPPS, including the protecting group strategy, coupling and cleavage efficiency, stability under aqueous conditions, and crucial side reactions.
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Affiliation(s)
- Sascha Knauer
- Sulfotools GmbH, In der Niederwiesen 24a, 64291, Darmstadt, Germany.,Institute for Organic Chemistry and Biochemistry, TU Darmstadt, Alarich-Weiss-Strasse 4, 64287, Darmstadt, Germany
| | - Niklas Koch
- Sulfotools GmbH, In der Niederwiesen 24a, 64291, Darmstadt, Germany
| | - Christina Uth
- Sulfotools GmbH, In der Niederwiesen 24a, 64291, Darmstadt, Germany
| | - Reinhard Meusinger
- Institute for Organic Chemistry and Biochemistry, TU Darmstadt, Alarich-Weiss-Strasse 4, 64287, Darmstadt, Germany
| | - Olga Avrutina
- Institute for Organic Chemistry and Biochemistry, TU Darmstadt, Alarich-Weiss-Strasse 4, 64287, Darmstadt, Germany
| | - Harald Kolmar
- Institute for Organic Chemistry and Biochemistry, TU Darmstadt, Alarich-Weiss-Strasse 4, 64287, Darmstadt, Germany
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68
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Khatri B, Bhat P, Chatterjee J. Convenient synthesis of thioamidated peptides and proteins. J Pept Sci 2020; 26:e3248. [PMID: 32202029 DOI: 10.1002/psc.3248] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 02/27/2020] [Accepted: 03/03/2020] [Indexed: 12/13/2022]
Abstract
The unique physicochemical properties of a thioamide bond, which is an ideal isostere of an amide bond, have not been fully exploited because of the tedious synthesis of thionated amino acid building blocks. Here, we report a purification-free and highly efficient synthesis of thiobenzotriazolides of Fmoc-protected and orthogonally protected 20 naturally occurring amino acids including asparagine, glutamine, and histidine. The near-quantitative conversion to the respective thioamidated peptides on solid support demonstrates the robustness of the synthetic route. Furthermore, the unaltered incorporation efficiency of thiobenzotriazolides from their stock solution till 48 h suggests their compatibility toward automated peptide synthesis. Finally, utilizing an optimized cocktail of 2% DBU + 5% piperazine for fast Fmoc-deprotection, we report the synthesis of a thioamidated Pin1 WW domain and thioamidated GB1 directly on solid support.
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Affiliation(s)
- Bhavesh Khatri
- Molecular Biophysics Unit, Indian Institute of Science, Bangalore, 560012, India
| | - Prabhat Bhat
- Molecular Biophysics Unit, Indian Institute of Science, Bangalore, 560012, India
| | - Jayanta Chatterjee
- Molecular Biophysics Unit, Indian Institute of Science, Bangalore, 560012, India
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69
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Itoh H, Miura K, Kamiya K, Yamashita T, Inoue M. Solid‐Phase Total Synthesis of Yaku'amide B Enabled by Traceless Staudinger Ligation. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201916517] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Hiroaki Itoh
- Graduate School of Pharmaceutical SciencesThe University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan
| | - Kensuke Miura
- Graduate School of Pharmaceutical SciencesThe University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan
| | - Koichi Kamiya
- Graduate School of Pharmaceutical SciencesThe University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan
| | - Tomoya Yamashita
- Graduate School of Pharmaceutical SciencesThe University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan
| | - Masayuki Inoue
- Graduate School of Pharmaceutical SciencesThe University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan
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70
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Skonieczny K, Espinoza EM, Derr JB, Morales M, Clinton JM, Xia B, Vullev VI. Biomimetic and bioinspired molecular electrets. How to make them and why does the established peptide chemistry not always work? PURE APPL CHEM 2020. [DOI: 10.1515/pac-2019-0111] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract“Biomimetic” and “bioinspired” define different aspects of the impacts that biology exerts on science and engineering. Biomimicking improves the understanding of how living systems work, and builds tools for bioinspired endeavors. Biological inspiration takes ideas from biology and implements them in unorthodox manners, exceeding what nature offers. Molecular electrets, i.e. systems with ordered electric dipoles, are key for advancing charge-transfer (CT) science and engineering. Protein helices and their biomimetic analogues, based on synthetic polypeptides, are the best-known molecular electrets. The inability of native polypeptide backbones to efficiently mediate long-range CT, however, limits their utility. Bioinspired molecular electrets based on anthranilamides can overcome the limitations of their biological and biomimetic counterparts. Polypeptide helices are easy to synthesize using established automated protocols. These protocols, however, fail to produce even short anthranilamide oligomers. For making anthranilamides, the residues are introduced as their nitrobenzoic-acid derivatives, and the oligomers are built from their C- to their N-termini via amide-coupling and nitro-reduction steps. The stringent requirements for these reduction and coupling steps pose non-trivial challenges, such as high selectivity, quantitative yields, and fast completion under mild conditions. Addressing these challenges will provide access to bioinspired molecular electrets essential for organic electronics and energy conversion.
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Affiliation(s)
- Kamil Skonieczny
- Department of Bioengineering, University of California, Riverside, CA 92521, USA
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44-52, 01-224 Warsaw, Poland
| | - Eli M. Espinoza
- Department of Chemistry, University of California, Riverside, CA 92521, USA
| | - James B. Derr
- Department of Biochemistry, University of California, Riverside, CA 92521, USA
| | - Maryann Morales
- Department of Chemistry, University of California, Riverside, CA 92521, USA
| | - Jillian M. Clinton
- Department of Bioengineering, University of California, Riverside, CA 92521, USA
| | - Bing Xia
- GlaxoSmithKline, 200 Cambridgepark Dr., Cambridge, MA 02140, USA
| | - Valentine I. Vullev
- Department of Bioengineering, University of California, Riverside, CA 92521, USA
- Department of Chemistry, University of California, Riverside, CA 92521, USA
- Department of Biochemistry, University of California, Riverside, CA 92521, USA
- Materials Science and Engineering Program, University of California, Riverside, CA 92521, USA
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71
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Itoh H, Miura K, Kamiya K, Yamashita T, Inoue M. Solid-Phase Total Synthesis of Yaku'amide B Enabled by Traceless Staudinger Ligation. Angew Chem Int Ed Engl 2020; 59:4564-4571. [PMID: 31943639 DOI: 10.1002/anie.201916517] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Indexed: 11/09/2022]
Abstract
We report a solid-phase strategy for total synthesis of the peptidic natural product yaku'amide B (1), which exhibits antiproliferative activity against various cancer cells. Its linear tridecapeptide sequence bears four β,β-dialkylated α,β-dehydroamino acid residues and is capped with an N-terminal acyl group (NTA) and a C-terminal amine (CTA). To realize the Fmoc-based solid-phase synthesis of this complex structure, we developed new methods for enamide formation, enamide deprotection, and C-terminal modification. First, traceless Staudinger ligation enabled enamide formation between sterically encumbered alkenyl azides and newly designed phosphinophenol esters. Second, application of Eu(OTf)3 led to chemoselective removal of the enamide Boc groups without detaching the resin linker. Finally, resin-cleavage and C-terminus modification were simultaneously achieved with an ester-amide exchange reaction using CTA and AlMe3 to deliver 1 in 9.1 % overall yield (24 steps from the resin).
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Affiliation(s)
- Hiroaki Itoh
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Kensuke Miura
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Koichi Kamiya
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Tomoya Yamashita
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Masayuki Inoue
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
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72
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Hussein WM, Skwarczynski M, Toth I. An Isodipeptide Building Block for Microwave-Assisted Solid-Phase Synthesis of Difficult Sequence-Containing Peptides. Methods Mol Biol 2020; 2103:139-150. [PMID: 31879923 DOI: 10.1007/978-1-0716-0227-0_9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Microwave technology, in conjunction with the isopeptide strategy including Fmoc-based solid-phase peptide synthesis (SPPS), was used to establish a methodology for time-efficient synthesis of peptides containing difficult sequences. A model difficult sequence-containing peptide (8QSer) was synthesized through this method in 1 day, representing a tenfold reduction in synthesis time compared to the isopeptide method combined with classical SPPS.
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Affiliation(s)
- Waleed M Hussein
- School of Chemistry and Molecular Biosciences, The University of Queensland, St. Lucia, QLD, Australia
| | - Mariusz Skwarczynski
- School of Chemistry and Molecular Biosciences, The University of Queensland, St. Lucia, QLD, Australia
| | - Istvan Toth
- School of Chemistry and Molecular Biosciences, The University of Queensland, St. Lucia, QLD, Australia.
- Institute for Molecular Bioscience, The University of Queensland, St Lucia, QLD, Australia.
- School of Pharmacy, The University of Queensland, Woolloongabba, QLD, Australia.
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73
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Samarasimhareddy M, Mayer G, Hurevich M, Friedler A. Multiphosphorylated peptides: importance, synthetic strategies, and applications for studying biological mechanisms. Org Biomol Chem 2020; 18:3405-3422. [DOI: 10.1039/d0ob00499e] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Advances in the synthesis of multiphosphorylated peptides and peptide libraries: tools for studying the effects of phosphorylation patterns on protein function and regulation.
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Affiliation(s)
- Mamidi Samarasimhareddy
- The Institute of Chemistry
- Edmond J. Safra Campus
- Givat Ram
- The Hebrew University of Jerusalem
- Jerusalem
| | - Guy Mayer
- The Institute of Chemistry
- Edmond J. Safra Campus
- Givat Ram
- The Hebrew University of Jerusalem
- Jerusalem
| | - Mattan Hurevich
- The Institute of Chemistry
- Edmond J. Safra Campus
- Givat Ram
- The Hebrew University of Jerusalem
- Jerusalem
| | - Assaf Friedler
- The Institute of Chemistry
- Edmond J. Safra Campus
- Givat Ram
- The Hebrew University of Jerusalem
- Jerusalem
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74
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Naoum JN, Alshanski I, Gitlin-Domagalska A, Bentolila M, Gilon C, Hurevich M. Diffusion-Enhanced Amide Bond Formation on a Solid Support. Org Process Res Dev 2019. [DOI: 10.1021/acs.oprd.9b00398] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | - Agata Gitlin-Domagalska
- Department of Molecular Biochemistry, Faculty of Chemistry, University of Gdansk, Wita Stwosza 63, 80-308 Gdansk, Poland
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75
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Guyon L, Lepeltier E, Gimel JC, Calvignac B, Franconi F, Lautram N, Dupont A, Bourgaux C, Pigeon P, Saulnier P, Jaouen G, Passirani C. Importance of Combining Advanced Particle Size Analysis Techniques To Characterize Cell-Penetrating Peptide-Ferrocifen Self-Assemblies. J Phys Chem Lett 2019; 10:6613-6620. [PMID: 31609118 DOI: 10.1021/acs.jpclett.9b01493] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The design of a simple platform to target the delivery of notably hydrophobic drugs into cancer cells is an ultimate goal. Here, three strategies were combined in the same nanovector, in limiting the use of excipients: cell-penetrating peptides, an amphiphilic prodrug, and self-assembly. Light scattering and cryogenic transmission electron microscopy revealed one size population of objects around 100 nm with a narrow size distribution. However, in-depth analysis of the suspension by nanoparticle tracking analysis, small-angle X-ray scattering, and nuclear magnetic resonance (NMR) diffusometry demonstrated the presence of another population of small objects (<2 nm). It has been shown that these small self-assemblies represented >99% of the matter! This presence was clearly and unambiguously demonstrated by NMR diffusometry experiments. The study highlights the importance and the complementary contribution of each characterization method to reflect the reality of the studied nanoassembly.
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Affiliation(s)
- Léna Guyon
- Micro et Nanomédecines Translationnelles, MINT , UNIV Angers , UMR INSERM 1066, UMR CNRS 6021, 49000 Angers , France
| | - Elise Lepeltier
- Micro et Nanomédecines Translationnelles, MINT , UNIV Angers , UMR INSERM 1066, UMR CNRS 6021, 49000 Angers , France
| | - Jean-Christophe Gimel
- Micro et Nanomédecines Translationnelles, MINT , UNIV Angers , UMR INSERM 1066, UMR CNRS 6021, 49000 Angers , France
| | - Brice Calvignac
- Micro et Nanomédecines Translationnelles, MINT , UNIV Angers , UMR INSERM 1066, UMR CNRS 6021, 49000 Angers , France
| | - Florence Franconi
- Micro et Nanomédecines Translationnelles, MINT , UNIV Angers , UMR INSERM 1066, UMR CNRS 6021, 49000 Angers , France
- PRISM Plate-forme de recherche en imagerie et spectroscopie multi-modales, PRISM-Icat , Angers et PRISM-Biosit CNRS UMS 3480, INSERM UMS 018, Rennes, UBL Universite Bretagne , 35000 Rennes , France
| | - Nolwenn Lautram
- Micro et Nanomédecines Translationnelles, MINT , UNIV Angers , UMR INSERM 1066, UMR CNRS 6021, 49000 Angers , France
| | - Aurélien Dupont
- Univ Rennes , CNRS , Inserm, BIOSIT-UMS 3480, US_S 018, F-35000 Rennes , France
| | - Claudie Bourgaux
- Institut Galien Paris-Sud, UMR CNRS 8612, Faculté de Pharmacie , Université Paris-Sud XI , 92290 Châtenay-Malabry , France
| | - Pascal Pigeon
- Sorbonne Université , UPMC Université Paris 06, UMR 8232, IPCM and PSL Chimie Paris Tech , 75005 Paris , France
| | - Patrick Saulnier
- Micro et Nanomédecines Translationnelles, MINT , UNIV Angers , UMR INSERM 1066, UMR CNRS 6021, 49000 Angers , France
| | - Gérard Jaouen
- Sorbonne Université , UPMC Université Paris 06, UMR 8232, IPCM and PSL Chimie Paris Tech , 75005 Paris , France
| | - Catherine Passirani
- Micro et Nanomédecines Translationnelles, MINT , UNIV Angers , UMR INSERM 1066, UMR CNRS 6021, 49000 Angers , France
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76
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Dickman R, Mitchell SA, Figueiredo AM, Hansen DF, Tabor AB. Molecular Recognition of Lipid II by Lantibiotics: Synthesis and Conformational Studies of Analogues of Nisin and Mutacin Rings A and B. J Org Chem 2019; 84:11493-11512. [PMID: 31464129 PMCID: PMC6759747 DOI: 10.1021/acs.joc.9b01253] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Indexed: 12/12/2022]
Abstract
In response to the growing threat posed by antibiotic-resistant bacterial strains, extensive research is currently focused on developing antimicrobial agents that target lipid II, a vital precursor in the biosynthesis of bacterial cell walls. The lantibiotic nisin and related peptides display unique and highly selective binding to lipid II. A key feature of the nisin-lipid II interaction is the formation of a cage-like complex between the pyrophosphate moiety of lipid II and the two thioether-bridged rings, rings A and B, at the N-terminus of nisin. To understand the important structural factors underlying this highly selective molecular recognition, we have used solid-phase peptide synthesis to prepare individual ring A and B structures from nisin, the related lantibiotic mutacin, and synthetic analogues. Through NMR studies of these rings, we have demonstrated that ring A is preorganized to adopt the correct conformation for binding lipid II in solution and that individual amino acid substitutions in ring A have little effect on the conformation. We have also analyzed the turn structures adopted by these thioether-bridged peptides and show that they do not adopt the tight α-turn or β-turn structures typically found in proteins.
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Affiliation(s)
- Rachael Dickman
- Department
of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, U.K.
| | - Serena A. Mitchell
- Department
of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, U.K.
| | - Angelo M. Figueiredo
- Institute
of Structural and Molecular Biology, Division of Biosciences, University College London, Gower Street, London WC1E 6BT, U.K.
| | - D. Flemming Hansen
- Institute
of Structural and Molecular Biology, Division of Biosciences, University College London, Gower Street, London WC1E 6BT, U.K.
| | - Alethea B. Tabor
- Department
of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, U.K.
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77
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Hosoyama K, Lazurko C, Muñoz M, McTiernan CD, Alarcon EI. Peptide-Based Functional Biomaterials for Soft-Tissue Repair. Front Bioeng Biotechnol 2019; 7:205. [PMID: 31508416 PMCID: PMC6716508 DOI: 10.3389/fbioe.2019.00205] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Accepted: 08/09/2019] [Indexed: 11/15/2022] Open
Abstract
Synthetically derived peptide-based biomaterials are in many instances capable of mimicking the structure and function of their full-length endogenous counterparts. Combine this with the fact that short mimetic peptides are easier to produce when compared to full length proteins, show enhanced processability and ease of modification, and have the ability to be prepared under well-defined and controlled conditions; it becomes obvious why there has been a recent push to develop regenerative biomaterials from these molecules. There is increasing evidence that the incorporation of peptides within regenerative scaffolds can result in the generation of structural recognition motifs that can enhance cell attachment or induce cell signaling pathways, improving cell infiltration or promote a variety of other modulatory biochemical responses. By highlighting the current approaches in the design and application of short mimetic peptides, we hope to demonstrate their potential in soft-tissue healing while at the same time drawing attention to the advances made to date and the problems which need to be overcome to advance these materials to the clinic for applications in heart, skin, and cornea repair.
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Affiliation(s)
- Katsuhiro Hosoyama
- Division of Cardiac Surgery Research, University of Ottawa Heart Institute, Ottawa, ON, Canada
| | - Caitlin Lazurko
- Division of Cardiac Surgery Research, University of Ottawa Heart Institute, Ottawa, ON, Canada.,Biochemistry, Microbiology and Immunology Department, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Marcelo Muñoz
- Division of Cardiac Surgery Research, University of Ottawa Heart Institute, Ottawa, ON, Canada
| | - Christopher D McTiernan
- Division of Cardiac Surgery Research, University of Ottawa Heart Institute, Ottawa, ON, Canada
| | - Emilio I Alarcon
- Division of Cardiac Surgery Research, University of Ottawa Heart Institute, Ottawa, ON, Canada.,Biochemistry, Microbiology and Immunology Department, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
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78
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Merlino F, Tomassi S, Yousif AM, Messere A, Marinelli L, Grieco P, Novellino E, Cosconati S, Di Maro S. Boosting Fmoc Solid-Phase Peptide Synthesis by Ultrasonication. Org Lett 2019; 21:6378-6382. [DOI: 10.1021/acs.orglett.9b02283] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Francesco Merlino
- Dipartimento di Farmacia, Università degli Studi di Napoli “Federico II”, via D. Montesano 49, 80131 Naples, Italy
| | - Stefano Tomassi
- DiSTABiF, Università degli Studi della Campania “Luigi Vanvitelli”, via A. Vivaldi 43, 81100 Caserta, Italy
| | - Ali M. Yousif
- Dipartimento di Farmacia, Università degli Studi di Napoli “Federico II”, via D. Montesano 49, 80131 Naples, Italy
| | - Anna Messere
- DiSTABiF, Università degli Studi della Campania “Luigi Vanvitelli”, via A. Vivaldi 43, 81100 Caserta, Italy
| | - Luciana Marinelli
- Dipartimento di Farmacia, Università degli Studi di Napoli “Federico II”, via D. Montesano 49, 80131 Naples, Italy
| | - Paolo Grieco
- Dipartimento di Farmacia, Università degli Studi di Napoli “Federico II”, via D. Montesano 49, 80131 Naples, Italy
| | - Ettore Novellino
- Dipartimento di Farmacia, Università degli Studi di Napoli “Federico II”, via D. Montesano 49, 80131 Naples, Italy
| | - Sandro Cosconati
- DiSTABiF, Università degli Studi della Campania “Luigi Vanvitelli”, via A. Vivaldi 43, 81100 Caserta, Italy
| | - Salvatore Di Maro
- DiSTABiF, Università degli Studi della Campania “Luigi Vanvitelli”, via A. Vivaldi 43, 81100 Caserta, Italy
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79
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Development of a high-throughput strategy for discovery of potent analogues of antibiotic lysocin E. Nat Commun 2019; 10:2992. [PMID: 31278250 PMCID: PMC6611794 DOI: 10.1038/s41467-019-10754-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Accepted: 05/30/2019] [Indexed: 12/13/2022] Open
Abstract
Lysocin E, a 37-membered natural depsipeptide, induces rapid bacteriolysis in methicillin-resistant Staphylococcus aureus via a unique menaquinone-dependent mechanism, presenting a promising therapeutic lead. Despite the great medical importance, exploring the potential utility of its derivatives as new platform structures for antibiotic development has remained a significant challenge. Here, we report a high-throughput strategy that enabled the preparation of thousands of analogues of lysocin E and large-scale structure-activity relationship analyses. We integrate 26-step total synthesis of 2401 cyclic peptides, tandem mass spectrometry-sequencing, and two microscale activity assays to identify 23 candidate compounds. Re-synthesis of these candidates shows that 11 of them (A1-A11) exhibit antimicrobial activity superior or comparable to that of lysocin E, and that lysocin E and A1-A11 share L-Leu-6 and L-Ile-11. Therefore, the present strategy allows us to efficiently decipher biologically crucial residues and identify potentially useful agents for the treatment of infectious diseases.
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80
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Rokhum L, Bez G. Recent Application of Polystyrene-supported Triphenylphosphine in Solid-Phase Organic Synthesis. CURR ORG CHEM 2019. [DOI: 10.2174/1385272822666181026115752] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Recent years have witnessed a fast development of solid phase synthetic pathways, a variety of solid-supported reagent and its applications in diverse synthetic strategies and pharmaceutical applicability’s. Polymer-supported triphenylphosphine is getting a lot of applications owing to the speed and simplicity in the process. Furthermore, ease of recyclability and reuse of polymer-supported triphenylphosphine added its advantages. This review covers a wide range of useful organic transformations which are accomplished using cross-linked polystyrene-supported triphenylphosphine with the aim of giving renewed interest in the field of organic and medicinal-combinatorial chemistry.
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Affiliation(s)
- Lalthazuala Rokhum
- Department of Chemistry, National Institute of Technology, Silchar-788010, India
| | - Ghanashyam Bez
- Department of Chemistry, North Eastern Hill University, Shillong-793022, India
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81
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Patil NA, Karas JA, Wade JD, Hossain MA, Tailhades J. Rapid Photolysis‐Mediated Folding of Disulfide‐Rich Peptides. Chemistry 2019; 25:8599-8603. [DOI: 10.1002/chem.201901334] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Indexed: 12/11/2022]
Affiliation(s)
- Nitin A. Patil
- The Monash Biomedicine Discovery Institute 15 Innovation Walk Clayton VIC 3800 Australia
| | - John A. Karas
- Department of Pharmacology and TherapeuticsThe University of Melbourne Victoria 3010 Australia
| | - John D. Wade
- Department of Pharmacology and TherapeuticsThe University of Melbourne Victoria 3010 Australia
- The Florey Institute of Neuroscience and Mental HealthUniversity of Melbourne 30 Royal Parade, Parkville Victoria 3052 Australia
| | - Mohammed Akhter Hossain
- Department of Pharmacology and TherapeuticsThe University of Melbourne Victoria 3010 Australia
- The Florey Institute of Neuroscience and Mental HealthUniversity of Melbourne 30 Royal Parade, Parkville Victoria 3052 Australia
| | - Julien Tailhades
- The Monash Biomedicine Discovery Institute 15 Innovation Walk Clayton VIC 3800 Australia
- EMBL AustraliaMonash University Clayton Victoria 3800 Australia
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82
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Al-Matar HM, Dawood KM, Tohamy WM, Shalaby MA. Facile Assembling of Novel 2,3,6,7,9-pentaazabicyclo- [3.3.1]nona-3,7-diene Derivatives under Microwave and Ultrasound Platforms. Molecules 2019; 24:E1110. [PMID: 30897823 PMCID: PMC6471913 DOI: 10.3390/molecules24061110] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 03/13/2019] [Accepted: 03/14/2019] [Indexed: 01/11/2023] Open
Abstract
Reactions of a series of 3-oxo-2-arylhydrazonopropanal derivatives with two molar ratio of ammonium acetate afforded a library of tetrasubstituted 2,3,6,7,9-pentaazabicyclo[3.3.1]nona- 3,7-diene derivatives in good to excellent isolated yields. The reaction was activated with triethylamine catalyst under three different heating modes: thermal, ultrasonic and microwave irradiating conditions in ethanol solvent. The structures of the isolated products were fully characterized by spectral and analytical data as well as X-ray single crystal of selected examples.
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Affiliation(s)
- Hamad M Al-Matar
- Chemistry Department, Faculty of Science, University of Kuwait, P.O. Box 5969, Safat 13060, Kuwait.
| | - Kamal M Dawood
- Department of Chemistry, Faculty of Science, Cairo University, Giza 12613, Egypt.
| | - Wael M Tohamy
- Organometallic and Organometalloid Chemistry Department, National Research Centre, Cairo 12622, Egypt.
| | - Mona A Shalaby
- Chemistry Department, Faculty of Science, University of Kuwait, P.O. Box 5969, Safat 13060, Kuwait.
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83
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Carbajo D, Fransen P, El-Faham A, Royo M, Albericio F. Pseudo-Wang Handle for the Preparation of Fully Protected Peptides. Synthesis of Liraglutide by Fragment Condensation. Org Lett 2019; 21:2459-2463. [DOI: 10.1021/acs.orglett.9b00813] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Daniel Carbajo
- CIBER-BBN, Networking Centre on Bioengineering, Biomaterials and Nanomedicine, University of Barcelona, 08028 Barcelona, Spain
- Institute of Advanced Chemistry of Catalonia (IQAC−CSIC), Spanish National Research Council (CSIC), 08034 Barcelona, Spain
| | - Peter Fransen
- CIBER-BBN, Networking Centre on Bioengineering, Biomaterials and Nanomedicine, University of Barcelona, 08028 Barcelona, Spain
| | - Ayman El-Faham
- Department of Chemistry, College of Science, King Saud University, 2455, Riyadh 11451, Saudi Arabia
- Department of Chemistry, Faculty of Science, Alexandria University, 426, Alexandria 21321, Egypt
| | - Miriam Royo
- CIBER-BBN, Networking Centre on Bioengineering, Biomaterials and Nanomedicine, University of Barcelona, 08028 Barcelona, Spain
- Institute of Advanced Chemistry of Catalonia (IQAC−CSIC), Spanish National Research Council (CSIC), 08034 Barcelona, Spain
| | - Fernando Albericio
- CIBER-BBN, Networking Centre on Bioengineering, Biomaterials and Nanomedicine, University of Barcelona, 08028 Barcelona, Spain
- Institute of Advanced Chemistry of Catalonia (IQAC−CSIC), Spanish National Research Council (CSIC), 08034 Barcelona, Spain
- Department of Chemistry, College of Science, King Saud University, 2455, Riyadh 11451, Saudi Arabia
- Department of Organic Chemistry, University of Barcelona, 08028 Barcelona, Spain
- School of Chemistry and Physics, University of KwaZulu-Natal, Durban 4001, South Africa
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84
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Kappe CO. My Twenty Years in Microwave Chemistry: From Kitchen Ovens to Microwaves that aren't Microwaves. CHEM REC 2019; 19:15-39. [PMID: 29905399 PMCID: PMC6391988 DOI: 10.1002/tcr.201800045] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2018] [Accepted: 05/30/2018] [Indexed: 12/15/2022]
Abstract
This Personal Account describes the author's involvement in the field of microwave-assisted organic synthesis (MAOS) from the late 1990's starting out with kitchen microwave ovens right through to the development of a reactor in 2016 that - although not using microwave technology - in many ways mimics the performance of a modern laboratory microwave. The reader is taken along a journey that has spanned two decades of intense research on various aspects of microwave chemistry, and, at the same time, was intimately linked to key innovations regarding equipment design and development. A "behind the scenes" approach is taken in this article to share - from a very personal point of view - how specific projects and research ideas were conceived and developed in my research group, and how in general the field of microwave chemistry has progressed in the last two decades.
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Affiliation(s)
- C. Oliver Kappe
- Institute of ChemistryUniversity of GrazHeinrichstrasse 28, A-8010 GrazAustria
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85
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Nekkaa I, Bogdán D, Gáti T, Béni S, Juhász T, Palkó M, Paragi G, Tóth GK, Fülöp F, Mándity IM. Flow-chemistry enabled efficient synthesis of β-peptides: backbone topology vs. helix formation. Chem Commun (Camb) 2019; 55:3061-3064. [DOI: 10.1039/c8cc10147g] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Enantiodiscriminative helix formation was observed for β-peptide H14 helices when enantiomers of bridged bicyclic residues were introduced.
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86
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Che Z, Tian Y, Liu S, Jiang J, Hu M, Chen G. Microwave-Assisted Expeditious Synthesis of 2-Alkyl-2-( N-arylsulfonylindol-3-yl)-3- N-acyl-5-aryl-1,3,4-oxadiazolines Catalyzed by HgCl₂ under Solvent-Free Conditions as Potential Anti-HIV-1 Agents. Molecules 2018; 23:E2936. [PMID: 30423803 PMCID: PMC6278315 DOI: 10.3390/molecules23112936] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Revised: 11/03/2018] [Accepted: 11/09/2018] [Indexed: 01/19/2023] Open
Abstract
A series of 2-alkyl-2-(N-arylsulfonylindol-3-yl)-3-N-acyl-5-aryl-1,3,4-oxadiazolines were expeditious prepared under microwave-assisted, catalyzed by HgCl₂ and solvent-free conditions. This method has the advantage of low catalyst loading and recovering catalyst, ease reaction and repaid reaction times, easy separation products and excellent yields, and more conducive to the large-scale synthesis products. Furthermore, compounds 3s, 3y, 3a', 3b', 3f', 3i', 3q', and 3r' exhibited more potent anti-HIV-1 activity with EC50 values of 3.35, 6.12, 3.63, 9.54, 1.79, 0.51, 3.00, and 4.01 μg/mL, and TI values of 32.66, >32.68, 31.22, 13.94, 24.27, 39.59, 26.01, and 24.51, respectively. Especially compound 3i' displayed the highest anti-HIV-1 activity with TI values of 39.59.
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Affiliation(s)
- Zhiping Che
- Laboratory of Pharmaceutical Design & Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471003, China.
| | - Yuee Tian
- Laboratory of Pharmaceutical Design & Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471003, China.
| | - Shengming Liu
- Laboratory of Pharmaceutical Design & Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471003, China.
| | - Jia Jiang
- Laboratory of Pharmaceutical Design & Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471003, China.
| | - Mei Hu
- Laboratory of Pharmaceutical Design & Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471003, China.
| | - Genqiang Chen
- Laboratory of Pharmaceutical Design & Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471003, China.
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87
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Synthetic Evaluation of Standard and Microwave-Assisted Solid Phase Peptide Synthesis of a Long Chimeric Peptide Derived from Four Plasmodium falciparum Proteins. Molecules 2018; 23:molecules23112877. [PMID: 30400576 PMCID: PMC6278645 DOI: 10.3390/molecules23112877] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Revised: 10/25/2018] [Accepted: 10/29/2018] [Indexed: 11/17/2022] Open
Abstract
An 82-residue-long chimeric peptide was synthesised by solid phase peptide synthesis (SPPS), following the Fmoc protocol. Microwave (MW) radiation-assisted synthesis was compared to standard synthesis using low loading (0.20 mmol/g) of polyethylene glycol (PEG) resin. Similar synthetic difficulties were found when the chimeric peptide was obtained via these two reaction conditions, indicating that such difficulties were inherent to the sequence and could not be resolved using MW; by contrast, the number of coupling cycles and total reaction time became reduced whilst crude yield and percentage recovery after purification were higher for MW radiation-assisted synthesis.
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88
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89
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Grassi L, Roschger C, Stanojlović V, Cabrele C. An explorative study towards the chemical synthesis of the immunoglobulin G1 Fc CH3 domain. J Pept Sci 2018; 24:e3126. [PMID: 30346065 PMCID: PMC6646916 DOI: 10.1002/psc.3126] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2018] [Revised: 08/26/2018] [Accepted: 09/06/2018] [Indexed: 12/16/2022]
Abstract
Monoclonal antibodies, fusion proteins including the immunoglobulin fragment c (Ig Fc) CH2‐CH3 domains, and engineered antibodies are prominent representatives of an important class of drugs and drug candidates, which are referred to as biotherapeutics or biopharmaceuticals. These recombinant proteins are highly heterogeneous due to their glycosylation pattern. In addition, enzyme‐independent reactions, like deamidation, dehydration, and oxidation of sensitive side chains, may contribute to their heterogeneity in a minor amount. To investigate the biological impact of a spontaneous chemical modification, especially if found to be recurrent in a biotherapeutic, it would be necessary to reproduce it in a homogeneous manner. Herein, we undertook an explorative study towards the chemical synthesis of the IgG1 Fc CH3 domain, which has been shown to undergo spontaneous changes like succinimide formation and methionine oxidation. We used Fmoc‐solid‐phase peptide synthesis (SPPS) and native chemical ligation (NCL) to test the accessibility of large fragments of the IgG1 Fc CH3 domain. In general, the incorporation of pseudoproline dipeptides improved the quality of the crude peptide precursors; however, sequences larger than 44 residues could not be achieved by standard stepwise elongation with Fmoc‐SPPS. In contrast, the application of NCL with cysteine residues, which were either native or introduced ad hoc, allowed the assembly of the C‐terminal IgG1 Fc CH3 sequence 371 to 450. The syntheses reported here show advantages and limitations of the chemical approaches chosen for the preparation of the synthetic IgG1 Fc CH3 domain and will guide future plans towards the synthesis of both the native and selectively modified full‐length domain.
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Affiliation(s)
- Luigi Grassi
- Christian Doppler Laboratory for Innovative Tools for Biosimilar Characterization, University of Salzburg, Hellbrunner Strasse 34, 5020, Salzburg, Austria.,Department of Biosciences, University of Salzburg, Billrothstrasse 11, 5020, Salzburg, Austria
| | - Cornelia Roschger
- Department of Biosciences, University of Salzburg, Billrothstrasse 11, 5020, Salzburg, Austria
| | - Vesna Stanojlović
- Department of Biosciences, University of Salzburg, Billrothstrasse 11, 5020, Salzburg, Austria
| | - Chiara Cabrele
- Christian Doppler Laboratory for Innovative Tools for Biosimilar Characterization, University of Salzburg, Hellbrunner Strasse 34, 5020, Salzburg, Austria.,Department of Biosciences, University of Salzburg, Billrothstrasse 11, 5020, Salzburg, Austria
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90
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Lizza JR, Bremerich M, McCabe SR, Wipf P. 2,2,6,6-Tetramethylpiperidin-1-yloxycarbonyl: A Protecting Group for Primary, Secondary, and Heterocyclic Amines. Org Lett 2018; 20:6760-6764. [DOI: 10.1021/acs.orglett.8b02874] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Joseph R. Lizza
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | | | - Stephanie R. McCabe
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Peter Wipf
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
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91
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Hayata A, Itoh H, Inoue M. Solid-Phase Total Synthesis and Dual Mechanism of Action of the Channel-Forming 48-mer Peptide Polytheonamide B. J Am Chem Soc 2018; 140:10602-10611. [PMID: 30040396 DOI: 10.1021/jacs.8b06755] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Polytheonamide B (1) is a unique peptide natural product because of its extremely complex structure, a channel-forming ability in vitro, and the extremely potent cytotoxicity. The 48-mer sequence of 1 comprises alternating d,l-amino acids and possesses an array of sterically bulky β-tetrasubstituted and hydrogen bond forming residues. These unusual structural features are believed to drive 1 to fold into a 4.5 nm long tube, form a transmembrane ion channel at the plasma membrane, and exert cytotoxicity. Despite its potential biological application, however, multiple substitutions by these unusual residues significantly heightened the synthetic challenges, impeding the solid-phase peptide synthesis (SPPS) of 1. In this study, we first addressed the synthesis problem by extensive optimization of various factors of the SPPS. Adaptation of a new protective group strategy allowed for elongation of a 37-mer peptide on resin, to which an N-terminal 11-mer fragment was condensed. Removal of the 18 protective groups and resin gave rise to 1 in excellent overall yield (4.5%, 76 steps from 17). The SPPS protocol is operationally simple and was proven easily amenable to total synthesis of the fluorescent 48-mer probe 2. Synthetic 1 and 2 were utilized for analysis of their cellular behavior. Reflecting its ion-channel function, the addition of 1 to MCF-7 cells rapidly diminished a potential across the plasma membrane. Furthermore, fluorescence imaging study revealed that 1 and 2 were also internalized into the cells, accumulating in acidic lysosomes and neutralizing the lysosomal pH gradient. These new findings indicated that 1 is capable of exerting two functions upon causing apoptotic cell death of mammalian cells: It induces free cation transport across the plasma as well as lysosomal membranes. The present chemical and biological studies provide valuable information for the design and synthesis of polytheonamide-based molecules with more potent and selective biological activities.
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Affiliation(s)
- Atsushi Hayata
- Graduate School of Pharmaceutical Sciences , The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku , Tokyo 113-0033 , Japan
| | - Hiroaki Itoh
- Graduate School of Pharmaceutical Sciences , The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku , Tokyo 113-0033 , Japan
| | - Masayuki Inoue
- Graduate School of Pharmaceutical Sciences , The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku , Tokyo 113-0033 , Japan
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92
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Qu Q, Pan M, Gao S, Zheng Q, Yu Y, Su J, Li X, Hu H. A Highly Efficient Synthesis of Polyubiquitin Chains. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2018; 5:1800234. [PMID: 30027052 PMCID: PMC6051384 DOI: 10.1002/advs.201800234] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2018] [Revised: 04/17/2018] [Indexed: 06/08/2023]
Abstract
A robust, microwave-assisted, highly efficient, solid-phase peptide synthesis method for preparing isopeptide-linked 62-mer and 76-mer isoubiquitins and polyubiquitin is developed. The strategy avoids the use of costly resins and pseudoprolines, and the isopeptide-linked building blocks can be assembled with high initial purity within 1 day. All seven diubiquitins are successfully synthesized on a multi-milligram scale; a four-segment, three-ligation method is used to obtain a K33-/K11-linked mixed triubiquitin in excellent yield. Circular dichroism and crystallographic analyses are used to verify the structures of the well-folded, synthetic polyubiquitin chains. The facile synthetic strategy is expected to be generally applicable for the rapid synthesis of isopeptide-linked isoUbs and to pave the way for the study of longer polyubiquitin chains.
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Affiliation(s)
- Qian Qu
- School of PharmacySecond Military Medical University325 Guohe RoadShanghai200433China
- Tsinghua‐Peking Center for Life SciencesTsinghua UniversityBeijing100084China
| | - Man Pan
- Tsinghua‐Peking Center for Life SciencesTsinghua UniversityBeijing100084China
| | - Shuai Gao
- Tsinghua‐Peking Center for Life SciencesTsinghua UniversityBeijing100084China
| | - Qing‐Yun Zheng
- Tsinghua‐Peking Center for Life SciencesTsinghua UniversityBeijing100084China
| | - Yuan‐Yuan Yu
- Tsinghua‐Peking Center for Life SciencesTsinghua UniversityBeijing100084China
| | - Jia‐Can Su
- Changhai HospitalSecond Military Medical University168 Changhai RoadShanghai200433China
| | - Xiang Li
- School of PharmacySecond Military Medical University325 Guohe RoadShanghai200433China
| | - Hong‐Gang Hu
- School of PharmacySecond Military Medical University325 Guohe RoadShanghai200433China
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93
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Miles JJ, Tan MP, Dolton G, Edwards ES, Galloway SA, Laugel B, Clement M, Makinde J, Ladell K, Matthews KK, Watkins TS, Tungatt K, Wong Y, Lee HS, Clark RJ, Pentier JM, Attaf M, Lissina A, Ager A, Gallimore A, Rizkallah PJ, Gras S, Rossjohn J, Burrows SR, Cole DK, Price DA, Sewell AK. Peptide mimic for influenza vaccination using nonnatural combinatorial chemistry. J Clin Invest 2018; 128:1569-1580. [PMID: 29528337 PMCID: PMC5873848 DOI: 10.1172/jci91512] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Accepted: 01/18/2018] [Indexed: 01/11/2023] Open
Abstract
Polypeptide vaccines effectively activate human T cells but suffer from poor biological stability, which confines both transport logistics and in vivo therapeutic activity. Synthetic biology has the potential to address these limitations through the generation of highly stable antigenic "mimics" using subunits that do not exist in the natural world. We developed a platform based on D-amino acid combinatorial chemistry and used this platform to reverse engineer a fully artificial CD8+ T cell agonist that mirrored the immunogenicity profile of a native epitope blueprint from influenza virus. This nonnatural peptide was highly stable in human serum and gastric acid, reflecting an intrinsic resistance to physical and enzymatic degradation. In vitro, the synthetic agonist stimulated and expanded an archetypal repertoire of polyfunctional human influenza virus-specific CD8+ T cells. In vivo, specific responses were elicited in naive humanized mice by subcutaneous vaccination, conferring protection from subsequent lethal influenza challenge. Moreover, the synthetic agonist was immunogenic after oral administration. This proof-of-concept study highlights the power of synthetic biology to expand the horizons of vaccine design and therapeutic delivery.
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Affiliation(s)
- John J. Miles
- Centre for Biodiscovery and Molecular Development of Therapeutics, Australian Institute of Tropical Health and Medicine, James Cook University, Cairns, Queensland, Australia
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
- Division of Infection and Immunity, Cardiff University School of Medicine, Cardiff, United Kingdom
- School of Medicine, The University of Queensland, Brisbane, Queensland, Australia
- Griffith University, Brisbane, Queensland, Australia
| | - Mai Ping Tan
- Division of Infection and Immunity, Cardiff University School of Medicine, Cardiff, United Kingdom
| | - Garry Dolton
- Division of Infection and Immunity, Cardiff University School of Medicine, Cardiff, United Kingdom
- Systems Immunity Research Institute, Cardiff University, Cardiff, United Kingdom
| | - Emily S.J. Edwards
- Division of Infection and Immunity, Cardiff University School of Medicine, Cardiff, United Kingdom
| | - Sarah A.E. Galloway
- Division of Infection and Immunity, Cardiff University School of Medicine, Cardiff, United Kingdom
| | - Bruno Laugel
- Division of Infection and Immunity, Cardiff University School of Medicine, Cardiff, United Kingdom
| | - Mathew Clement
- Division of Infection and Immunity, Cardiff University School of Medicine, Cardiff, United Kingdom
| | - Julia Makinde
- Division of Infection and Immunity, Cardiff University School of Medicine, Cardiff, United Kingdom
| | - Kristin Ladell
- Division of Infection and Immunity, Cardiff University School of Medicine, Cardiff, United Kingdom
- Systems Immunity Research Institute, Cardiff University, Cardiff, United Kingdom
| | | | - Thomas S. Watkins
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Katie Tungatt
- Division of Infection and Immunity, Cardiff University School of Medicine, Cardiff, United Kingdom
| | - Yide Wong
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Han Siean Lee
- School of Biomedical Sciences, The University of Queensland, Brisbane, Queensland, Australia
| | - Richard J. Clark
- School of Biomedical Sciences, The University of Queensland, Brisbane, Queensland, Australia
| | - Johanne M. Pentier
- Division of Infection and Immunity, Cardiff University School of Medicine, Cardiff, United Kingdom
| | - Meriem Attaf
- Division of Infection and Immunity, Cardiff University School of Medicine, Cardiff, United Kingdom
| | - Anya Lissina
- Division of Infection and Immunity, Cardiff University School of Medicine, Cardiff, United Kingdom
| | - Ann Ager
- Division of Infection and Immunity, Cardiff University School of Medicine, Cardiff, United Kingdom
| | - Awen Gallimore
- Division of Infection and Immunity, Cardiff University School of Medicine, Cardiff, United Kingdom
| | - Pierre J. Rizkallah
- Division of Infection and Immunity, Cardiff University School of Medicine, Cardiff, United Kingdom
| | - Stephanie Gras
- Infection and Immunity Program and Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, and
- Australian Research Council Centre of Excellence in Advanced Molecular Imaging, Monash University, Clayton, Victoria, Australia
| | - Jamie Rossjohn
- Division of Infection and Immunity, Cardiff University School of Medicine, Cardiff, United Kingdom
- Infection and Immunity Program and Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, and
- Australian Research Council Centre of Excellence in Advanced Molecular Imaging, Monash University, Clayton, Victoria, Australia
| | - Scott R. Burrows
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - David K. Cole
- Division of Infection and Immunity, Cardiff University School of Medicine, Cardiff, United Kingdom
| | - David A. Price
- Division of Infection and Immunity, Cardiff University School of Medicine, Cardiff, United Kingdom
- Systems Immunity Research Institute, Cardiff University, Cardiff, United Kingdom
- Human Immunology Section, Vaccine Research Center, National Institute of Allergy and Infectious Diseases, NIH, Bethesda, Maryland, USA
| | - Andrew K. Sewell
- Division of Infection and Immunity, Cardiff University School of Medicine, Cardiff, United Kingdom
- Systems Immunity Research Institute, Cardiff University, Cardiff, United Kingdom
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94
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Sharma A, Kumar A, Abdel Monaim SAH, Jad YE, El-Faham A, de la Torre BG, Albericio F. N-methylation in amino acids and peptides: Scope and limitations. Biopolymers 2018. [PMID: 29528112 DOI: 10.1002/bip.23110] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Active pharmaceutical ingredients (APIs) can be divided into two types, namely chemical and biological entities. Traditionally, the former has been associated with the so-called small molecules. The revival of peptides in pharmaceutical industry results from their importance in many biological roles. However, low metabolic stability and the lack of oral availability of most peptides is the main drawback for peptide to fulfill that paradigmatic situation. In this regard, efforts are being channeled into addressing this issue by introducing restrictions into the flexible peptide backbone, mainly through N-methyl amino acids (NMAAs) or development of small cyclic peptides. In many cases, both the above restrictions are combined with the aim to enhance oral availability. The synthesis of NMAAs is complex and their introduction into the peptide chain brings additional synthetic challenges and also sometimes leads to side-reactions. Here we discuss the most efficient methods for the synthesis of NMAAs (either in solution or in solid phase) and also their introduction into peptide sequences. Special attention is also given to the detection of side reactions and the most efficient way to prevent them.
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Affiliation(s)
- Anamika Sharma
- Catalysis and Peptide Research Unit, School of Health Sciences, University of KwaZulu-Natal, Westville, Durban, 4001, South Africa
| | - Ashish Kumar
- Catalysis and Peptide Research Unit, School of Health Sciences, University of KwaZulu-Natal, Westville, Durban, 4001, South Africa.,School of Chemistry and Physics, University of KwaZulu-Natal, Westville, Durban, 4001, South Africa
| | - Shimaa A H Abdel Monaim
- Catalysis and Peptide Research Unit, School of Health Sciences, University of KwaZulu-Natal, Westville, Durban, 4001, South Africa
| | - Yahya E Jad
- Catalysis and Peptide Research Unit, School of Health Sciences, University of KwaZulu-Natal, Westville, Durban, 4001, South Africa
| | - Ayman El-Faham
- Department of Chemistry, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia.,Department of Chemistry, Faculty of Science, Alexandria University, Ibrahimia, Alexandria, 21321, Egypt
| | - Beatriz G de la Torre
- Catalysis and Peptide Research Unit, School of Health Sciences, University of KwaZulu-Natal, Westville, Durban, 4001, South Africa.,KRISP, College of Health Sciences, University of KwaZulu-Natal, Westville, Durban, 4001, South Africa
| | - Fernando Albericio
- Catalysis and Peptide Research Unit, School of Health Sciences, University of KwaZulu-Natal, Westville, Durban, 4001, South Africa.,School of Chemistry and Physics, University of KwaZulu-Natal, Westville, Durban, 4001, South Africa.,Department of Chemistry, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia.,Department of Organic Chemistry, University of Barcelona, Martí i Franqués 1-11, Barcelona, 08028, Spain.,CIBER-BBN, Networking Centre on Bioengineering, Biomaterials and Nanomedicine, Barcelona Science Park, Baldiri Reixac 10, Barcelona, 08028, Spain
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95
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Wang J, Bao A, Meng X, Guo H, Zhang Y, Zhao Y, Kong W, Liang J, Yao J, Zhang J. An efficient approach to prepare sulfated polysaccharide and evaluation of anti-tumor activities in vitro. Carbohydr Polym 2018; 184:366-375. [DOI: 10.1016/j.carbpol.2017.12.065] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2017] [Revised: 12/11/2017] [Accepted: 12/22/2017] [Indexed: 01/04/2023]
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96
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Ramesh S, de la Torre BG, Albericio F, Kruger HG, Govender T. Microwave-Assisted Synthesis of Antimicrobial Peptides. Methods Mol Biol 2018; 1548:51-59. [PMID: 28013496 DOI: 10.1007/978-1-4939-6737-7_4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2023]
Abstract
Antimicrobial peptides (AMPs) are emerging as one of the unsurpassed therapeutic tools to treat various devastating diseases that are affecting millions of lives. Conventional synthesis of peptides requires longer times, and hence automated microwave technology could be regarded as an alternative implement which offers advantages like less reaction times and higher yields. In this sense, we herein describe a methodology to prepare AMPs through solid-phase peptide synthesis under microwave conditions. We have used LL37 as an example to discuss the synthetic protocol including the difficulties involved in the preparation of so-called long and difficult peptides and also remedial procedures to overcome these obstacles.
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Affiliation(s)
- Suhas Ramesh
- Catalysis and Peptide Research Unit, School of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Beatriz G de la Torre
- Catalysis and Peptide Research Unit, School of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Fernando Albericio
- Catalysis and Peptide Research Unit, School of Health Sciences, University of KwaZulu-Natal, Durban, South Africa.,School of Chemistry and Physics, University of KwaZulu-Natal, Durban, South Africa.,CIBER-BBN, Networking Centre on Bioengineering, Biomaterials and Nanomedicine, Barcelona Science Park, Barcelona, Spain.,Department of Organic Chemistry, University of Barcelona, Barcelona, Spain
| | - Hendrik G Kruger
- Catalysis and Peptide Research Unit, School of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Thavendran Govender
- Catalysis and Peptide Research Unit, School of Health Sciences, University of KwaZulu-Natal, Westville Campus, E-Block, 6th Floor, Room E1-06-016, Durban, 4001, South Africa.
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97
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Guidelines for Determining the Structures of Radical SAM Enzyme-Catalyzed Modifications in the Biosynthesis of RiPP Natural Products. Methods Enzymol 2018; 606:439-460. [DOI: 10.1016/bs.mie.2018.04.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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98
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Bielmann A, Curty C, Bochet CG. Solid-Phase Synthesis of the Aged-Nonapeptide-Nerve-Agent Adduct of Butyrylcholinesterase as Reference Materials for Analytical Verification. Helv Chim Acta 2017. [DOI: 10.1002/hlca.201700198] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Andreas Bielmann
- Spiez Laboratory; Austrasse 3700 Spiez Switzerland
- Department of Chemistry; University of Fribourg; Chemin du Musée 9 1700 Fribourg Switzerland
| | | | - Christian G. Bochet
- Department of Chemistry; University of Fribourg; Chemin du Musée 9 1700 Fribourg Switzerland
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99
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ten Brummelhuis N, Wilke P, Börner HG. Identification of Functional Peptide Sequences to Lead the Design of Precision Polymers. Macromol Rapid Commun 2017; 38. [DOI: 10.1002/marc.201700632] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Revised: 09/26/2017] [Indexed: 12/16/2022]
Affiliation(s)
- Niels ten Brummelhuis
- Laboratory for Organic Synthesis of Functional Systems; Department of Chemistry; Humboldt-Universität zu Berlin; Brook-Taylor-Str. 2 D-12489 Berlin Germany
| | - Patrick Wilke
- Laboratory for Organic Synthesis of Functional Systems; Department of Chemistry; Humboldt-Universität zu Berlin; Brook-Taylor-Str. 2 D-12489 Berlin Germany
| | - Hans G. Börner
- Laboratory for Organic Synthesis of Functional Systems; Department of Chemistry; Humboldt-Universität zu Berlin; Brook-Taylor-Str. 2 D-12489 Berlin Germany
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100
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A Large Size Chimeric Highly Immunogenic Peptide Presents Multistage Plasmodium Antigens as a Vaccine Candidate System against Malaria. Molecules 2017; 22:molecules22111837. [PMID: 29104210 PMCID: PMC6150380 DOI: 10.3390/molecules22111837] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Revised: 10/16/2017] [Accepted: 10/23/2017] [Indexed: 12/04/2022] Open
Abstract
Rational strategies for obtaining malaria vaccine candidates should include not only a proper selection of target antigens for antibody stimulation, but also a versatile molecular design based on ordering the right pieces from the complex pathogen molecular puzzle towards more active and functional immunogens. Classical Plasmodium falciparum antigens regarded as vaccine candidates have been selected as model targets in this study. Among all possibilities we have chosen epitopes of PfCSP, STARP; MSA1 and Pf155/RESA from pre- and erythrocyte stages respectively for designing a large 82-residue chimeric immunogen. A number of options aimed at diminishing steric hindrance for synthetic procedures were assessed based on standard Fmoc chemistry such as building block orthogonal ligation; pseudo-proline and microwave-assisted procedures, therefore the large-chimeric target was produced, characterized and immunologically tested. Antigenicity and functional in vivo efficacy tests of the large-chimera formulations administered alone or as antigen mixtures have proven the stimulation of high antibody titers, showing strong correlation with protection and parasite clearance of vaccinated BALB/c mice after being lethally challenged with both P. berghei-ANKA and P. yoelii 17XL malaria strains. Besides, 3D structure features shown by the large-chimera encouraged as to propose using these rational designed large synthetic molecules as reliable vaccine candidate-presenting systems.
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