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Biological Activity and Stability of Aeruginosamides from Cyanobacteria. Mar Drugs 2022; 20:md20020093. [PMID: 35200623 PMCID: PMC8878463 DOI: 10.3390/md20020093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 01/17/2022] [Accepted: 01/19/2022] [Indexed: 02/04/2023] Open
Abstract
Aeruginosamides (AEGs) are classified as cyanobactins, ribosomally synthesized peptides with post-translational modifications. They have been identified in cyanobacteria of genera Microcystis, Oscillatoria, and Limnoraphis. In this work, the new data on the in vitro activities of three AEG variants, AEG A, AEG625 and AEG657, and their interactions with metabolic enzymes are reported. Two aeruginosamides, AEG625 and AEG657, decreased the viability of human breast cancer cell line T47D, but neither of the peptides was active against human liver cancer cell line Huh7. AEGs also did not change the expression of MIR92b-3p, but for AEG625, the induction of oxidative stress was observed. In the presence of a liver S9 fraction containing microsomal and cytosolic enzymes, AEG625 and AEG657 showed high stability. In the same assays, quick removal of AEG A was recorded. The peptides had mild activity against three cytochrome P450 enzymes, CYP2C9, CYP2D6 and CYP3A4, but only at the highest concentration used in the study (60 µM). The properties of AEGs, i.e., cytotoxic activity and in vitro interactions with important metabolic enzymes, form a good basis for further studies on their pharmacological potential.
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Sardar D, Hao Y, Lin Z, Morita M, Nair SK, Schmidt EW. Enzymatic N- and C-Protection in Cyanobactin RiPP Natural Products. J Am Chem Soc 2017; 139:2884-2887. [PMID: 28195477 PMCID: PMC5764894 DOI: 10.1021/jacs.6b12872] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Recent innovations in peptide natural product biosynthesis reveal a surprising wealth of previously uncharacterized biochemical reactions that have potential applications in synthetic biology. Among these, the cyanobactins are noteworthy because these peptides are protected at their N- and C-termini by macrocyclization. Here, we use a novel bifunctional enzyme AgeMTPT to protect linear peptides by attaching prenyl and methyl groups at their free N- and C-termini. Using this peptide protectase in combination with other modular biosynthetic enzymes, we describe the total synthesis of the natural product aeruginosamide B and the biosynthesis of linear cyanobactin natural products. Our studies help to define the enzymatic mechanism of macrocyclization, providing evidence against the water exclusion hypothesis of transpeptidation and favoring the kinetic lability hypothesis.
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Affiliation(s)
- Debosmita Sardar
- Department of Medicinal Chemistry, University of Utah, Salt Lake City, Utah
| | - Yue Hao
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Illinois
| | - Zhenjian Lin
- Department of Medicinal Chemistry, University of Utah, Salt Lake City, Utah
| | - Maho Morita
- Department of Medicinal Chemistry, University of Utah, Salt Lake City, Utah
| | - Satish K. Nair
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Illinois
| | - Eric W. Schmidt
- Department of Medicinal Chemistry, University of Utah, Salt Lake City, Utah
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Liu H, Liu Y, Wang Z, Xing X, Maguire AR, Luesch H, Zhang H, Xu Z, Ye T. Total synthesis and biological evaluation of grassypeptolide A. Chemistry 2013; 19:6774-84. [PMID: 23536467 DOI: 10.1002/chem.201203667] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2012] [Revised: 02/18/2013] [Indexed: 01/08/2023]
Abstract
Herein, we describe in full our investigations into the synthesis of grassypeptolide A (1) in 17 linear steps with an overall yield of 11.3 %. In particular, this work features the late-stage introduction of sensitive bis(thiazoline) heterocycles and 31-membered macrocyclization conducted at the sterically congested secondary amide site in superb conversion (72 % yield). Biological evaluation indicated that grassypeptolide A significantly inhibited cancer cell proliferation in a dose-dependent manner. It induced cancer cell apoptosis, which was associated with increased cleavage of poly(ADP-ribose) polymerase (PARP) and decreased expression of bcl-2 and bcl-xL. Furthermore, grassypeptolide A also caused cell cycle redistribution by increasing cells in the G1 phase and decreasing cells in the S and G2 phases. In addition, cell cycle arrest was correlated with downregulation of cyclin D and upregulation of p27 and p21.
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Affiliation(s)
- Hui Liu
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Shenzhen Graduate School of Peking University, Shenzhen 518055, PR China
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Long B, Tang S, Chen L, Qu S, Chen B, Liu J, Maguire AR, Wang Z, Liu Y, Zhang H, Xu Z, Ye T. Total synthesis of padanamides A and B. Chem Commun (Camb) 2013; 49:2977-9. [PMID: 23446820 DOI: 10.1039/c3cc00178d] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/23/2024]
Abstract
The first total syntheses of padanamides A and B have been achieved, unambiguously confirming their structures.
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Affiliation(s)
- Bohua Long
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
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Dai L, Chen B, Lei H, Wang Z, Liu Y, Xu Z, Ye T. Total synthesis and stereochemical revision of lagunamide A. Chem Commun (Camb) 2012; 48:8697-9. [PMID: 22824869 DOI: 10.1039/c2cc34187e] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A revised configurational assignment for the marine metabolite lagunamide A is proposed and validated by total synthesis.
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Affiliation(s)
- Lu Dai
- Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, University Town of Shenzhen, Xili, Nanshan District, Shenzhen, 518055, China
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Wang M, Feng X, Cai L, Xu Z, Ye T. Total synthesis and absolute configuration of nocardioazine B. Chem Commun (Camb) 2012; 48:4344-6. [DOI: 10.1039/c2cc31025b] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Abstract
Hoiamide C was synthesized in 16 steps with an overall yield of 1.8% starting from homoallylic alcohol 18, unambiguously confirming its structure.
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Affiliation(s)
- Lei Wang
- Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, University Town of Shenzhen, Xili, Nanshan District, Shenzhen, China
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Hikawa H, Yokoyama Y. Palladium-catalyzed mono-N-allylation of unprotected amino acids with 1,1-dimethylallyl alcohol in water. Org Biomol Chem 2011; 9:4044-50. [DOI: 10.1039/c1ob05238a] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Gao X, Liu Y, Kwong S, Xu Z, Ye T. Total synthesis and stereochemical reassignment of bisebromoamide. Org Lett 2010; 12:3018-21. [PMID: 20527927 DOI: 10.1021/ol101021v] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A revised configurational assignment for the thiazoline moiety of the marine peptide bisebromoamide is proposed and validated by total synthesis.
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Affiliation(s)
- Xuguang Gao
- Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, University Town of Shenzhen, Xili, Nanshan District, Shenzhen, China
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Abstract
The first total synthesis of grassypeptolide, an anticancer cyclodepsipeptide isolated from marine cyanobacteria, has been achieved in 17 steps and an overall 11.3% yield.
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Affiliation(s)
- Hui Liu
- Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, University Town of Shenzhen, Xili, Nanshan District, Shenzhen, China 518055
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Chen Z, Song L, Xu Z, Ye T. Synthesis of the C9-C23 (C9'-C23') fragment of the dimeric natural product rhizopodin. Org Lett 2010; 12:2036-9. [PMID: 20380407 DOI: 10.1021/ol100515m] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A stereoselective assembly of the C9-C23 (C9'-C23') fragment of rhizopodin, a 38-membered bis-lactone natural product, has been developed. A highly efficient approach to this fragment assembles >50% of the carbon skeleton and the stereochemical elements present in the natural product.
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Affiliation(s)
- Zheng Chen
- Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, University Town of Shenzhen, Xili, Nanshan District, Shenzhen, China
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Affiliation(s)
- Ying Jin
- Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, University Town of Shenzhen, Xili, Nanshan District, Shenzhen, China, 518055, and Department of Applied Biology & Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Yuqing Liu
- Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, University Town of Shenzhen, Xili, Nanshan District, Shenzhen, China, 518055, and Department of Applied Biology & Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Zhuo Wang
- Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, University Town of Shenzhen, Xili, Nanshan District, Shenzhen, China, 518055, and Department of Applied Biology & Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Shuqin Kwong
- Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, University Town of Shenzhen, Xili, Nanshan District, Shenzhen, China, 518055, and Department of Applied Biology & Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Zhengshuang Xu
- Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, University Town of Shenzhen, Xili, Nanshan District, Shenzhen, China, 518055, and Department of Applied Biology & Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Tao Ye
- Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, University Town of Shenzhen, Xili, Nanshan District, Shenzhen, China, 518055, and Department of Applied Biology & Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
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Li S, Chen Z, Xu Z, Ye T. Synthesis of the macrocyclic core of iriomoteolide-1a. Chem Commun (Camb) 2010; 46:4773-5. [DOI: 10.1039/c0cc00915f] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Sundararaju B, Achard M, Sharma GVM, Bruneau C. Ruthenium-catalyzed selective N ,N-diallylation- and N ,N ,O-triallylation of free amino acids. Org Biomol Chem 2009; 7:3906-9. [PMID: 19763288 DOI: 10.1039/b911097f] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Selective N ,N-diallylation and N ,N, O-triallylation of free amino acids in the presence of catalytic amounts of RuCp*(MeCN)(3)PF(6) is reported. The crucial influence of the solvent makes these allylation reactions selectively possible.
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Affiliation(s)
- Basker Sundararaju
- UMR6226 CNRS-Université de Rennes, Sciences chimiques de Rennes, Catalyse et Organométalliques, Campus de Beaulieu, 35042, Rennes Cedex, France
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