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Cen K, Bao J, Wang X, Tian H, Wang Y, Gui J. Bioinspired Divergent Synthesis of Aspersteroids A and B. J Am Chem Soc 2024; 146:6481-6486. [PMID: 38421318 DOI: 10.1021/jacs.4c01016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
Aspersteroids A and B are novel ergostane-type 18,22-cyclosterols with immunosuppressive and antimicrobial activities. Herein, we report the first synthesis of these two natural products, which was accomplished in 15 and 14 steps, respectively, from commercially available ergosterol by means of a bioinspired divergent approach. Key features of this synthesis include an unprecedented radical relay cyclization that was initiated by iron(II)-mediated decomposition of an alkyl hydroperoxide to construct the E ring cyclopentane motif; a titanium(III)-mediated diastereoselective radical reduction of an epoxide to install the challenging C22 stereocenter; and highly regioselective, divergent late-stage oxidations to access the highly oxidized core framework.
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Affiliation(s)
- Ke Cen
- State Key Laboratory of Chemical Biology, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Jiajing Bao
- State Key Laboratory of Chemical Biology, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Xudong Wang
- State Key Laboratory of Chemical Biology, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Hailong Tian
- State Key Laboratory of Chemical Biology, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Yun Wang
- State Key Laboratory of Chemical Biology, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Jinghan Gui
- State Key Laboratory of Chemical Biology, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
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3
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Maji A, Soutar CP, Zhang J, Lewandowska A, Uno BE, Yan S, Shelke Y, Murhade G, Nimerovsky E, Borcik CG, Arango AS, Lange JD, Marin-Toledo JP, Lyu Y, Bailey KL, Roady PJ, Holler JT, Khandelwal A, SantaMaria AM, Sanchez H, Juvvadi PR, Johns G, Hageman MJ, Krise J, Gebremariam T, Youssef EG, Bartizal K, Marr KA, Steinbach WJ, Ibrahim AS, Patterson TF, Wiederhold NP, Andes DR, Pogorelov TV, Schwieters CD, Fan TM, Rienstra CM, Burke MD. Tuning sterol extraction kinetics yields a renal-sparing polyene antifungal. Nature 2023; 623:1079-1085. [PMID: 37938782 PMCID: PMC10883201 DOI: 10.1038/s41586-023-06710-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Accepted: 10/04/2023] [Indexed: 11/09/2023]
Abstract
Decades of previous efforts to develop renal-sparing polyene antifungals were misguided by the classic membrane permeabilization model1. Recently, the clinically vital but also highly renal-toxic small-molecule natural product amphotericin B was instead found to kill fungi primarily by forming extramembraneous sponge-like aggregates that extract ergosterol from lipid bilayers2-6. Here we show that rapid and selective extraction of fungal ergosterol can yield potent and renal-sparing polyene antifungals. Cholesterol extraction was found to drive the toxicity of amphotericin B to human renal cells. Our examination of high-resolution structures of amphotericin B sponges in sterol-free and sterol-bound states guided us to a promising structural derivative that does not bind cholesterol and is thus renal sparing. This derivative was also less potent because it extracts ergosterol more slowly. Selective acceleration of ergosterol extraction with a second structural modification yielded a new polyene, AM-2-19, that is renal sparing in mice and primary human renal cells, potent against hundreds of pathogenic fungal strains, resistance evasive following serial passage in vitro and highly efficacious in animal models of invasive fungal infections. Thus, rational tuning of the dynamics of interactions between small molecules may lead to better treatments for fungal infections that still kill millions of people annually7,8 and potentially other resistance-evasive antimicrobials, including those that have recently been shown to operate through supramolecular structures that target specific lipids9.
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Affiliation(s)
- Arun Maji
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, USA
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL, USA
- Carl R. Woese Institute for Genomic Biology, University of Illinois Urbana-Champaign, Urbana, IL, USA
- Molecule Maker Lab, Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Corinne P Soutar
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL, USA
- Carl R. Woese Institute for Genomic Biology, University of Illinois Urbana-Champaign, Urbana, IL, USA
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI, USA
| | - Jiabao Zhang
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL, USA
- Carl R. Woese Institute for Genomic Biology, University of Illinois Urbana-Champaign, Urbana, IL, USA
| | - Agnieszka Lewandowska
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL, USA
- Carl R. Woese Institute for Genomic Biology, University of Illinois Urbana-Champaign, Urbana, IL, USA
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI, USA
| | - Brice E Uno
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Su Yan
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL, USA
- Carl R. Woese Institute for Genomic Biology, University of Illinois Urbana-Champaign, Urbana, IL, USA
| | - Yogesh Shelke
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL, USA
- Carl R. Woese Institute for Genomic Biology, University of Illinois Urbana-Champaign, Urbana, IL, USA
| | - Ganesh Murhade
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL, USA
- Carl R. Woese Institute for Genomic Biology, University of Illinois Urbana-Champaign, Urbana, IL, USA
| | - Evgeny Nimerovsky
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL, USA
- Department for NMR-Based Structural Biology, Max-Planck-Institute for Biophysical Chemistry, Göttingen, Germany
| | - Collin G Borcik
- Molecule Maker Lab, Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, USA
- National Magnetic Resonance Facility at Madison, University of Wisconsin-Madison, Madison, WI, USA
| | - Andres S Arango
- Center for Biophysics and Quantitative Biology, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Justin D Lange
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL, USA
- Carl R. Woese Institute for Genomic Biology, University of Illinois Urbana-Champaign, Urbana, IL, USA
| | | | - Yinghuan Lyu
- Carl R. Woese Institute for Genomic Biology, University of Illinois Urbana-Champaign, Urbana, IL, USA
- Department of Pathology, Renaissance School of Medicine, Stony Brook University, Stony Brook, NY, USA
| | - Keith L Bailey
- Department of Veterinary Clinical Medicine, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Patrick J Roady
- Department of Veterinary Clinical Medicine, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Jordan T Holler
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Anuj Khandelwal
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Anna M SantaMaria
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL, USA
- National Institute of Child Health and Human Development, Bethesda, MD, USA
| | - Hiram Sanchez
- Department of Medicine, Section of Infectious Disease, University of Wisconsin-Madison, Madison, WI, USA
| | - Praveen R Juvvadi
- Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | | | - Michael J Hageman
- Department of Pharmaceutical Chemistry, The University of Kansas, Lawrence, KS, USA
| | - Joanna Krise
- Department of Pharmaceutical Chemistry, The University of Kansas, Lawrence, KS, USA
| | | | - Eman G Youssef
- Division of Infectious Diseases, The Lundquist Institute, Torrance, CA, USA
| | | | | | - William J Steinbach
- Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR, USA
- Arkansas Children's Research Institute, Little Rock, AR, USA
| | - Ashraf S Ibrahim
- Division of Infectious Diseases, The Lundquist Institute, Torrance, CA, USA
- David Geffen School of Medicine, UCLA, Los Angeles, CA, USA
| | - Thomas F Patterson
- Department of Medicine, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
| | - Nathan P Wiederhold
- Department of Pathology and Laboratory Medicine, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
| | - David R Andes
- Department of Medicine, Section of Infectious Disease, University of Wisconsin-Madison, Madison, WI, USA
- Department of Medical Microbiology and Immunology, University of Wisconsin-Madison, Madison, WI, USA
| | - Taras V Pogorelov
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, USA
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL, USA
- Center for Biophysics and Quantitative Biology, University of Illinois at Urbana-Champaign, Urbana, IL, USA
- School of Chemical Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, USA
- National Center for Supercomputing Applications, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Charles D Schwieters
- Computational Biomolecular Magnetic Resonance Core, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Timothy M Fan
- Department of Veterinary Clinical Medicine, University of Illinois at Urbana-Champaign, Urbana, IL, USA
- Cancer Center at Illinois, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Chad M Rienstra
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI, USA.
- National Magnetic Resonance Facility at Madison, University of Wisconsin-Madison, Madison, WI, USA.
- Morgridge Institute for Research, University of Wisconsin-Madison, Madison, WI, USA.
| | - Martin D Burke
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, USA.
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL, USA.
- Carl R. Woese Institute for Genomic Biology, University of Illinois Urbana-Champaign, Urbana, IL, USA.
- Cancer Center at Illinois, University of Illinois at Urbana-Champaign, Urbana, IL, USA.
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, IL, USA.
- Carle-Illinois College of Medicine, University of Illinois at Urbana-Champaign, Champaign, IL, USA.
- Molecule Maker Lab Institute, University of Illinois at Urbana-Champaign, Urbana, IL, USA.
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4
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Jafari M, Abolmaali SS, Borandeh S, Najafi H, Zareshahrabadi Z, Heidari R, Azarpira N, Zomorodian K, Tamaddon AM. Amphiphilic hyperbranched polyglycerol nanoarchitectures for Amphotericin B delivery in Candida infections. BIOMATERIALS ADVANCES 2022; 139:212996. [PMID: 35891600 DOI: 10.1016/j.bioadv.2022.212996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2022] [Revised: 05/23/2022] [Accepted: 06/17/2022] [Indexed: 06/15/2023]
Abstract
Although Amphotericin B (AMB) is considered the most effective anti-mycotic agent for treating Candida infections, its clinical use is limited due to its high toxicity. To address this issue, we developed cholesterol-based dendritic micelles of hyperbranched polyglycerol (HPG), including cholesterol-cored HPG (Chol-HPG) and cholesterol end-capped HPG (HPG@Chol), for AMB delivery. The findings suggested that the presence of cholesterol moieties could control AMB loading and release properties. Dendritic micelles inhibited AMB hemolysis and cytotoxicity in HEK 293 and RAW 264.7 cell lines while increasing antifungal activity against C. albicans biofilm formation. Furthermore, significantly lower levels of renal and liver toxicity biomarkers compared to Fungizone® ensured AMB-incorporated dendritic micelle biosafety, which was confirmed by histopathological evaluations. Overall, the Chol-HPG and HPG@Chol dendritic micelles may be a viable alternative to commercially available AMB formulations as well as an effective delivery system for other poorly soluble antifungal agents.
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Affiliation(s)
- Mahboobeh Jafari
- Pharmaceutical Nanotechnology Department, Shiraz University of Medical Sciences, Shiraz, PO Box 71345-1583, Iran
| | - Samira Sadat Abolmaali
- Pharmaceutical Nanotechnology Department, Shiraz University of Medical Sciences, Shiraz, PO Box 71345-1583, Iran; Center for Nanotechnology in Drug Delivery, Shiraz University of Medical Sciences, Shiraz, PO Box 71345-1583, Iran
| | - Sedigheh Borandeh
- Center for Nanotechnology in Drug Delivery, Shiraz University of Medical Sciences, Shiraz, PO Box 71345-1583, Iran
| | - Haniyeh Najafi
- Pharmaceutical Nanotechnology Department, Shiraz University of Medical Sciences, Shiraz, PO Box 71345-1583, Iran
| | - Zahra Zareshahrabadi
- Department of Parasitology & Mycology, School of Medicines, Shiraz University of Medical Sciences, Shiraz, PO Box 713484-5794, Iran
| | - Reza Heidari
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, PO Box 71345-1583, Iran
| | - Negar Azarpira
- Transplant Research Center, Shiraz University of Medical Sciences, Mohammad Rasoul-allah Research Tower, Shiraz, PO Box 7193711351, Iran
| | - Kamiar Zomorodian
- Department of Parasitology & Mycology, School of Medicines, Shiraz University of Medical Sciences, Shiraz, PO Box 713484-5794, Iran; Basic Sciences in Infectious Diseases Research Center, School of Medicine, Shiraz University of Medical Sciences, Shiraz, PO Box 713484-5794, Iran.
| | - Ali Mohammad Tamaddon
- Pharmaceutical Nanotechnology Department, Shiraz University of Medical Sciences, Shiraz, PO Box 71345-1583, Iran; Center for Nanotechnology in Drug Delivery, Shiraz University of Medical Sciences, Shiraz, PO Box 71345-1583, Iran.
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5
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Rodriguez YJ, Quejada LF, Villamil JC, Baena Y, Parra-Giraldo CM, Perez LD. Development of Amphotericin B Micellar Formulations Based on Copolymers of Poly(ethylene glycol) and Poly(ε-caprolactone) Conjugated with Retinol. Pharmaceutics 2020; 12:E196. [PMID: 32106492 PMCID: PMC7150995 DOI: 10.3390/pharmaceutics12030196] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 01/21/2020] [Accepted: 01/22/2020] [Indexed: 12/02/2022] Open
Abstract
Amphotericin B (AmB) is a broad spectrum of antifungal drug used to treat antifungal diseases. However, due to the high toxicity of AmB, treated patients may suffer the risk of side effects, such as renal failure. Nanoencapsulation strategies have been reported to elicit low toxicity, albeit most of them possess low encapsulation efficiency. The aim of this research is to develop micellar delivery systems for AmB with reduced toxicity while maintaining its affectivity by employing retinol (RET)-conjugated amphiphilic block copolymers (ABCs) as precursors. Copolymers composed of poly(ε-caprolactone) (A) and polyethylenglycol (B) of types AB and ABA were synthesized by ring opening polymerization and subsequently conjugated with RET by Steglich esterification. 1H-NMR spectroscopy was used to corroborate the structure of copolymers and their conjugates and determine their molecular weights. Analysis by gel permeation chromatography also found that the materials have narrow distributions. The resulting copolymers were used as precursors for delivery systems of AmB, thus reducing its aggregation and consequently causing a low haemolytic effect. Upon conjugation with RET, the encapsulation capacity was enhanced from approximately 2 wt % for AB and ABA copolymers to 10 wt %. AmB encapsulated in polymer micelles presented improved antifungal efficiency against Candida albicans and Candida auris strains compared with Fungizone®, as deduced from the low minimum inhibitory concentration.
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Affiliation(s)
- Yeimy J. Rodriguez
- Grupo de Investigación en Macromoléculas, Departamento de Química, Facultad de Ciencias, Universidad Nacional de Colombia-Sede Bogotá, Carrera 45 No. 26-85, Edificio 451 of. 449, Bogotá D.C. 11001, Colombia;
| | - Luis F. Quejada
- Unidad de Proteómica y Micosis Humanas, Grupo de Enfermedades Infecciosas Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Carrera 7 No. 43-82, Bogotá D.C. 110231, Colombia; (L.F.Q.); (J.C.V.)
| | - Jean C. Villamil
- Unidad de Proteómica y Micosis Humanas, Grupo de Enfermedades Infecciosas Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Carrera 7 No. 43-82, Bogotá D.C. 110231, Colombia; (L.F.Q.); (J.C.V.)
| | - Yolima Baena
- Grupo de Investigación SILICOMOBA, Departamento de Farmacia, Facultad de Ciencias, Universidad Nacional de Colombia-Sede Bogotá, Carrera 45 No. 26-85, Edificio 451 of. 449, Bogotá D.C. 11001, Colombia
| | - Claudia M. Parra-Giraldo
- Unidad de Proteómica y Micosis Humanas, Grupo de Enfermedades Infecciosas Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Carrera 7 No. 43-82, Bogotá D.C. 110231, Colombia; (L.F.Q.); (J.C.V.)
| | - Leon D. Perez
- Grupo de Investigación en Macromoléculas, Departamento de Química, Facultad de Ciencias, Universidad Nacional de Colombia-Sede Bogotá, Carrera 45 No. 26-85, Edificio 451 of. 449, Bogotá D.C. 11001, Colombia;
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