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Sever B, Altintop MD, Özdemir A. Synthesis of New Bis-pyrazolines Endowed with Potent Antifungal Activity against Candida albicans and Aspergillus niger. LETT DRUG DES DISCOV 2021. [DOI: 10.2174/1570180817999201008155247] [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
Background:
Due to the increasing number of cases of invasive fungal infections (IFIs),
there is an urgent need to identify potent antifungal agents capable of combating IFIs. Pyrazolines
are one such class of therapeutically active agents that could be considered to fulfill this need.
Objective:
In this context, this paper aims to identify two new series of bis-pyrazolines endowed
with potent antifungal activity against Candida albicans and Aspergillus niger.
Methods:
Two new series of bis-pyrazolines (4a-i, 5a-e) were synthesized through an efficient and
versatile synthetic procedure. The compounds were screened for their antifungal effects on C. albicans
and A. niger using a broth microdilution method. Their cytotoxic effects on NIH/3T3 mouse
embryonic fibroblast cells were determined using MTT assay. Molecular docking studies were performed
in the active site of lanosterol 14α-demethylase (CYP51) to shed light on their antifungal
effects using Schrödinger’s Maestro molecular modeling package.
Results:
5,5'-(1,4-Phenylene)bis[1-(2-(5-phenyl-1,3,4-oxadiazol-2-yl)thio)acetyl)-3-(2-thienyl)-4,5-
dihydro-1H-pyrazole] (4a) and 5,5'-(1,4-phenylene)bis[1-(2-(4-(2-hydroxyethyl)-1-piperazinylthiocarbamoyl)
thio)acetyl)-3-(2-thienyl)-4,5-dihydro-1H-pyrazole] (5a) were found as the most
promising antifungal agents in this series. Compounds 4a and 5a showed pronounced antifungal
activity against C. albicans (MIC= 0.016 mg/mL) and A. niger (MIC= 0.008 mg/mL). Based on
MTT assay, their antifungal effects were selective (IC50 > 0.500 mg/mL for NIH/3T3 cell line).
Molecular docking studies suggested that compounds 5a-e might show their anticandidal effects via
CYP51 inhibition in regard to their stronger interactions in the active site of CYP51.
Conclusion:
Compounds 4a and 5a stand out as potential antifungal agents for the management of
IFIs caused by C. albicans and A. niger.
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Affiliation(s)
- Belgin Sever
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, 26470 Eskisehir, Turkey
| | - Mehlika Dilek Altintop
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, 26470 Eskisehir, Turkey
| | - Ahmet Özdemir
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, 26470 Eskisehir, Turkey
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The application of isatin-based multicomponent-reactions in the quest for new bioactive and druglike molecules. Eur J Med Chem 2020; 211:113102. [PMID: 33421712 DOI: 10.1016/j.ejmech.2020.113102] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 12/09/2020] [Accepted: 12/10/2020] [Indexed: 12/16/2022]
Abstract
Oxindole derivatives are known for their great interest in the field of Medicinal Chemistry, as they display vast biological activities. Recent efforts concerning the preparation of oxindole derivatives using isatin-based multicomponent reactions (MCRs) constitute a great advance in generating druglike libraries fast and with wide scaffold diversity. In this review, we address those recent developments, exploring the synthetic pathways and biological activities described for these compounds, namely antitumor, antibacterial, antifungal, antiparasitic, antiviral, antioxidant, anti-inflammatory and central nervous system (CNS) pathologies. To add new depth to this work, we used a well-established web-based free tool (SwissADME) to evaluate the most promising scaffolds in what concerns their druglike properties, namely by evaluating their compliance with some of the most valuable rules applied by medicinal chemists in both academia and industrial settings (Lipinski, Ghose, Veber, Egan, Muegge). The aim of this review is to endorse isatin-based MCRs as a valuable synthetic approach to attain new hit compounds bearing the oxindole privileged structure, while critically exploring these scaffolds' druglike properties.
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Wieczorek D, Kaczorowska E, Wiśniewska M, Madura ID, Leśniak M, Lipok J, Adamczyk-Woźniak A. Synthesis and Influence of 3-Amino Benzoxaboroles Structure on Their Activity against Candida albicans. Molecules 2020; 25:E5999. [PMID: 33352986 PMCID: PMC7766895 DOI: 10.3390/molecules25245999] [Citation(s) in RCA: 6] [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: 10/27/2020] [Revised: 12/09/2020] [Accepted: 12/15/2020] [Indexed: 11/16/2022] Open
Abstract
Benzoxaboroles emerged recently as molecules of high medicinal potential with Kerydin® (Tavaborole) and Eucrisa® (Crisaborole) currently in clinical practice as antifungal and anti-inflammatory drugs, respectively. Over a dozen of 3-amino benzoxaboroles, including Tavaborole's derivatives, have been synthetized and characterized in terms of their activity against Candida albicans as a model pathogenic fungus. The studied compounds broaden considerably the structural diversity of reported benzoxaboroles, enabling determination of the influence of the introduction of a heterocyclic amine, a fluorine substituent as well as the formyl group on antifungal activity of those compounds. The determined zones of the growth inhibition of examined microorganism indicate high diffusion of majority of the studied compounds within the applied media as well as their reasonable activity. The Minimum Inhibitory Concentration (MIC) values show that the introduction of an amine substituent in position "3" of the benzoxaborole heterocyclic ring results in a considerable drop in activity in comparison with Tavaborole (AN2690) as well as unsubstituted benzoxaborole (AN2679). In all studied cases the presence of a fluorine substituent at position para to the boron atom results in lower MIC values (higher activity). Interestingly, introduction of a fluorine substituent in the more distant piperazine phenyl ring does not influence MIC values. As determined by X-ray studies, introduction of a formyl group in proximity of the boron atom results in a considerable change of the boronic group geometry. The presence of a formyl group next to the benzoxaborole unit is also detrimental for activity against Candida albicans.
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Affiliation(s)
- Dorota Wieczorek
- Faculty of Chemistry, University of Opole, Oleska 48, 45-052 Opole, Poland; (D.W.); (J.L.)
| | - Ewa Kaczorowska
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland; (E.K.); (M.W.); (I.D.M.); (M.L.)
| | - Marta Wiśniewska
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland; (E.K.); (M.W.); (I.D.M.); (M.L.)
| | - Izabela D. Madura
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland; (E.K.); (M.W.); (I.D.M.); (M.L.)
| | - Magdalena Leśniak
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland; (E.K.); (M.W.); (I.D.M.); (M.L.)
| | - Jacek Lipok
- Faculty of Chemistry, University of Opole, Oleska 48, 45-052 Opole, Poland; (D.W.); (J.L.)
| | - Agnieszka Adamczyk-Woźniak
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland; (E.K.); (M.W.); (I.D.M.); (M.L.)
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54
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History of the development of antifungal azoles: A review on structures, SAR, and mechanism of action. Bioorg Chem 2020; 104:104240. [DOI: 10.1016/j.bioorg.2020.104240] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 07/17/2020] [Accepted: 08/11/2020] [Indexed: 01/12/2023]
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55
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Zhong LF, Shang ZC, Sun FJ, Zhu PH, Yin Y, Kong LY, Yang MH. Anticandidal formyl phloroglucinol meroterpenoids: Biomimetic synthesis and in vitro evaluation. Bioorg Chem 2020; 104:104248. [PMID: 32916392 DOI: 10.1016/j.bioorg.2020.104248] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Revised: 05/15/2020] [Accepted: 08/28/2020] [Indexed: 02/05/2023]
Abstract
Inspired by the diversity-oriented synthesis, some novel formyl phloroglucinol meroterpenoids were synthesized via biomimetic synthesis using essential oils. Eight of them were demonstrated with good in vitro fungicidal activity against Candida albicans and C. glabrata. Compound c2 showed the best anticandidal ability that was powerfully comparable to fluconazole when testing against several strains in vitro. The antibiofilm activity was also found for the c2 treating group which was evidenced to block the hyphal elongation and filamentation of C. albicans. Therefore, compound c2 is a promising candidate for further antifungal-based structure modification.
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Affiliation(s)
- Lin-Fang Zhong
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, People's Republic of China
| | - Zhi-Chun Shang
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, People's Republic of China
| | - Fu-Juan Sun
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, People's Republic of China
| | - Pan-Hu Zhu
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, People's Republic of China
| | - Yong Yin
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, People's Republic of China
| | - Ling-Yi Kong
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, People's Republic of China.
| | - Ming-Hua Yang
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, People's Republic of China.
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56
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Zoidis G, Kritsi E, Lecinska P, Ivanov M, Zoumpoulakis P, Sokovic M, Catto M. The Triazole Ring as a Privileged Scaffold for Putative Antifungals: Synthesis and Evaluation of a Series of New Analogues. ChemMedChem 2020; 16:134-144. [PMID: 33428335 DOI: 10.1002/cmdc.202000312] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 07/21/2020] [Indexed: 12/20/2022]
Abstract
The significant antifungal activity of a series of novel 1,2,4-triazole derivatives against different strains of Candida albicans, Candida krusei and Aspergillus fumigatus, compared to the commercial fungicides ketoconazole and itraconazole, is reported. Systemic mycosis and invasive fungal infections, whether from immunodeficiency or hospital-acquired infection, have been on an upward trend for several years. The 1,2,4-triazole ring substituted with other aromatic and heteroaromatic systems plays an important role in the field of antifungal drug discovery and development. Thus, an extensive series of 29 triazoles, substituted in different positions with a variety of aromatic rings, has been designed, synthesized, and evaluated for their fungicidal activity. Almost all the agents tested in vitro showed high activity against all examined fungal strains. It is noteworthy that, in the case of A. fumigatus, all the examined compounds achieved equal or higher antifungal activity than ketoconazole, but less activity than itraconazole. Among all the derivatives studied, the dichlorourea analogue and bromo-substituted triazole stand out as the most promising compounds. Quantitative structure-activity relationship (QSAR) models were built for a systematic structure-activity relationship (SAR) profile to explain and potentially explore the potency characteristics of 1,2,4-triazole analogues.
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Affiliation(s)
- Grigoris Zoidis
- Department of Pharmacy, National and Kapodistrian University of Athens Panepistimiopolis-Zografou, 15771, Athens, Greece
| | - Eftichia Kritsi
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
| | - Paulina Lecinska
- Dipartimento di Farmacia-Scienze del Farmaco, Università degli Studi di Bari "Aldo Moro", via E. Orabona 4, 70125, Bari, Italy
| | - Marija Ivanov
- Institute for Biological Research "Siniša Stanković" National Institute of the Republic of Serbia, University of Belgrade, Bulevar Despota Stefana 142, 11000, Belgrade, Serbia
| | - Panagiotis Zoumpoulakis
- Institute of Chemical Biology, National Hellenic Research Foundation, Vas. Constantinou Ave. 48, 11635, Athens, Greece
| | - Marina Sokovic
- Institute for Biological Research "Siniša Stanković" National Institute of the Republic of Serbia, University of Belgrade, Bulevar Despota Stefana 142, 11000, Belgrade, Serbia
| | - Marco Catto
- Dipartimento di Farmacia-Scienze del Farmaco, Università degli Studi di Bari "Aldo Moro", via E. Orabona 4, 70125, Bari, Italy
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57
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Liu W, Yuan L, Wang S. Recent Progress in the Discovery of Antifungal Agents Targeting the Cell Wall. J Med Chem 2020; 63:12429-12459. [PMID: 32692166 DOI: 10.1021/acs.jmedchem.0c00748] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Due to the limit of available treatments and the emergence of drug resistance in the clinic, invasive fungal infections are an intractable problem with high morbidity and mortality. The cell wall, as a fungi-specific structure, is an appealing target for the discovery and development of novel and low-toxic antifungal agents. In an attempt to accelerate the discovery of novel cell wall targeted drugs, this Perspective will provide a comprehensive review of the progress made to date on the development of fungal cell wall inhibitors. Specifically, this review will focus on the targets, discovery process, chemical structures, antifungal activities, and structure-activity relationships. Although two types of cell wall antifungal agents are clinically available or in clinical trials, it is still a long way for the other cell wall targeted inhibitors to be translated into clinical applications. Future efforts should be focused on the identification of inhibitors against novel conserved cell wall targets.
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Affiliation(s)
- Wei Liu
- Faculty of Pharmacy, School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xuefu Middle Road, Xi'an 710021, People's Republic of China
| | - Lin Yuan
- Faculty of Pharmacy, School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xuefu Middle Road, Xi'an 710021, People's Republic of China
| | - Shengzheng Wang
- Department of Medicinal Chemistry and Pharmaceutical Analysis, School of Pharmacy, Fourth Military Medical University, 169 Changle West Road, Xi'an 710032, People's Republic of China
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58
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Xu H, Su X, Guo MB, An R, Mou YH, Hou Z, Guo C. Design, synthesis, and biological evaluation of novel miconazole analogues containing selenium as potent antifungal agents. Eur J Med Chem 2020; 198:112360. [DOI: 10.1016/j.ejmech.2020.112360] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 04/17/2020] [Accepted: 04/17/2020] [Indexed: 12/19/2022]
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59
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Dihydrofolate Reductase Is a Valid Target for Antifungal Development in the Human Pathogen Candida albicans. mSphere 2020; 5:5/3/e00374-20. [PMID: 32581079 PMCID: PMC7316490 DOI: 10.1128/msphere.00374-20] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The folate biosynthetic pathway is a promising and understudied source for novel antifungals. Even dihydrofolate reductase (DHFR), a well-characterized and historically important drug target, has not been conclusively validated as an antifungal target. Here, we demonstrate that repression of DHFR inhibits growth of Candida albicans, a major human fungal pathogen. Methotrexate, an antifolate, also inhibits growth but through pH-dependent activity. In addition, we show that C. albicans has a limited ability to take up or utilize exogenous folates as only the addition of high concentrations of folinic acid restored growth in the presence of methotrexate. Finally, we show that repression of DHFR in a mouse model of infection was sufficient to eliminate host mortality. Our work conclusively establishes DHFR as a valid antifungal target in C. albicans. While the folate biosynthetic pathway has provided a rich source of antibacterial, antiprotozoal, and anticancer therapies, it has not yet been exploited to develop uniquely antifungal agents. Although there have been attempts to develop fungal-specific inhibitors of dihydrofolate reductase (DHFR), the protein itself has not been unequivocally validated as essential for fungal growth or virulence. The purpose of this study was to establish dihydrofolate reductase as a valid antifungal target. Using a strain with doxycycline-repressible transcription of DFR1 (PTETO-DFR1 strain), we were able to demonstrate that Dfr1p is essential for growth in vitro. Furthermore, nutritional supplements of most forms of folate are not sufficient to restore growth when Dfr1p expression is suppressed or when its activity is directly inhibited by methotrexate, indicating that Candida albicans has a limited capacity to acquire or utilize exogenous sources of folate. Finally, the PTETO-DFR1 strain was rendered avirulent in a mouse model of disseminated candidiasis upon doxycycline treatment. Collectively, these results confirm the validity of targeting dihydrofolate reductase and, by inference, other enzymes in the folate biosynthetic pathway as a strategy to devise new and efficacious therapies to combat life-threatening invasive fungal infections. IMPORTANCE The folate biosynthetic pathway is a promising and understudied source for novel antifungals. Even dihydrofolate reductase (DHFR), a well-characterized and historically important drug target, has not been conclusively validated as an antifungal target. Here, we demonstrate that repression of DHFR inhibits growth of Candida albicans, a major human fungal pathogen. Methotrexate, an antifolate, also inhibits growth but through pH-dependent activity. In addition, we show that C. albicans has a limited ability to take up or utilize exogenous folates as only the addition of high concentrations of folinic acid restored growth in the presence of methotrexate. Finally, we show that repression of DHFR in a mouse model of infection was sufficient to eliminate host mortality. Our work conclusively establishes DHFR as a valid antifungal target in C. albicans.
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60
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Abstract
Fungal infections with increasing resistance to conventional therapies are a growing concern. Candida albicans is a major opportunistic yeast responsible for mucosal and invasive infections. Targeting the initial step of the infection process (i.e., C. albicans adhesion to the host cell) is a promising strategy. A wide variety of molecules can interfere with adhesion processes via an assortment of mechanisms. Herein, we focus on how small molecules disrupt biosynthesis of fungal cell wall components and membrane structure, prevent the localization of GPI-anchor proteins, inhibit production of enzymes involved in adhesion, downregulate genes encoding adhesins and competitively inhibit receptor interactions. As a result, adhesion of C. albicans to host cells is reduced, paving the way to new classes of antifungal agents.
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61
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Li C, Liu Y, Wu S, Han G, Tu J, Dong G, Liu N, Sheng C. Targeting fungal virulence factor by small molecules: Structure-based discovery of novel secreted aspartic protease 2 (SAP2) inhibitors. Eur J Med Chem 2020; 201:112515. [PMID: 32623209 DOI: 10.1016/j.ejmech.2020.112515] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Revised: 05/19/2020] [Accepted: 05/29/2020] [Indexed: 02/07/2023]
Abstract
Secreted aspartic protease 2 (SAP2), a kind of virulence factor, is an emerging new antifungal target. Using docking-based virtual screening and structure-based inhibitor design, a series of novel SAP2 inhibitors were successfully identified. Among them, indolone derivative 24a showed potent SAP2 inhibitory activity (IC50 = 0.92 μM). It blocked fungi biofilm and hypha formation by down-regulating the expression of genes SAP2, ECE1, ALS3 and EFG1. As a virulence factor inhibitor, compound 24a was inactive in vitro and showed potent in vivo efficacy in a murine model of invasive candidiasis. It represents a promising lead compound for the discovery of novel antifungal agents.
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Affiliation(s)
- Chenglan Li
- School of Pharmacy, Ningxia Medical University, 1160 Shengli Street, Yinchuan, 750004, China; Department of Medicinal Chemistry, School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai, 200433, China
| | - Yang Liu
- Department of Pharmacy, No. 971 Hospital of PLA, Qingdao, 266071, China
| | - Shanchao Wu
- Department of Medicinal Chemistry, School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai, 200433, China
| | - Guiyan Han
- Department of Medicinal Chemistry, School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai, 200433, China
| | - Jie Tu
- Department of Medicinal Chemistry, School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai, 200433, China
| | - Guoqiang Dong
- Department of Medicinal Chemistry, School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai, 200433, China.
| | - Na Liu
- Department of Medicinal Chemistry, School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai, 200433, China.
| | - Chunquan Sheng
- School of Pharmacy, Ningxia Medical University, 1160 Shengli Street, Yinchuan, 750004, China; Department of Medicinal Chemistry, School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai, 200433, China.
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62
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Design, synthesis and biological evaluation of novel 3,4-dihydro-2(1H)-quinolinone derivatives as potential chitin synthase inhibitors and antifungal agents. Eur J Med Chem 2020; 195:112278. [DOI: 10.1016/j.ejmech.2020.112278] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 03/25/2020] [Accepted: 03/25/2020] [Indexed: 12/11/2022]
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63
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Han G, Liu N, Li C, Tu J, Li Z, Sheng C. Discovery of Novel Fungal Lanosterol 14α-Demethylase (CYP51)/Histone Deacetylase Dual Inhibitors to Treat Azole-Resistant Candidiasis. J Med Chem 2020; 63:5341-5359. [PMID: 32347094 DOI: 10.1021/acs.jmedchem.0c00102] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Invasive fungal infections (particularly candidiasis) are emerging as severe infectious diseases worldwide. Because of serious antifungal drug resistance, therapeutic efficacy of the current treatment for candidiasis is limited and associated with high mortality. However, it is highly challenging to develop novel strategies and effective therapeutic agents to combat drug resistance. Herein, the first generation of lanosterol 14α-demethylase (CYP51)-histone deacetylase (HDAC) dual inhibitors was designed, which exhibited potent antifungal activity against azole-resistant clinical isolates. In particular, compounds 12h and 15j were highly active both in vitro and in vivo to treat azole-resistant candidiasis. Antifungal mechanism studies revealed that they acted by blocking ergosterol biosynthesis and HDAC catalytic activity in fungus, suppressing the function of efflux pump, yeast-to-hypha morphological transition, and biofilm formation. Therefore, CYP51-HDAC dual inhibitors represent a promising strategy to develop novel antifungal agents against azole-resistant candidiasis.
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Affiliation(s)
- Guiyan Han
- Department of Medicinal Chemistry, School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai 200433, China
| | - Na Liu
- Department of Medicinal Chemistry, School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai 200433, China
| | - Chenglan Li
- Department of Medicinal Chemistry, School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai 200433, China.,School of Pharmacy, Ningxia Medical University, 1160 Shengli Street, Yinchuan 750004, China
| | - Jie Tu
- Department of Medicinal Chemistry, School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai 200433, China
| | - Zhuang Li
- Department of Medicinal Chemistry, School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai 200433, China
| | - Chunquan Sheng
- Department of Medicinal Chemistry, School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai 200433, China
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64
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Ji C, Liu N, Tu J, Li Z, Han G, Li J, Sheng C. Drug Repurposing of Haloperidol: Discovery of New Benzocyclane Derivatives as Potent Antifungal Agents against Cryptococcosis and Candidiasis. ACS Infect Dis 2020; 6:768-786. [PMID: 31550886 DOI: 10.1021/acsinfecdis.9b00197] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Despite the high morbidity and mortality of invasive fungal infections (IFIs), effective and safe antifungal agents are rather limited. Starting from antifungal lead compound haloperidol that was identified by drug repurposing, a series of novel benzocyclane derivatives were designed, synthesized, and assayed. Several compounds showed improved antifungal potency and broader antifungal spectra. Particularly, compound B10 showed good inhibitory activities against a variety of fungal pathogens and was proven to be an inhibitor of several virulence factors important for drug resistance. In the in vivo cryptococcosis and candidiasis models, compound B10 could effectively reduce the brain fungal burden of Cryptococcus neoformans and synergize with fluconazole to treat resistant Candida albicans infections. Preliminary antifungal mechanism studies revealed that compound B10 regained cell membrane damage and down-regulated the overexpression of ERG11 and MDR1 genes when used in combination with fluconazole. Taken together, haloperidol derivative B10 represents a promising lead compound for the development of a new generation of antifungal agents.
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Affiliation(s)
- Changjin Ji
- School of Pharmacy, East China University of Science & Technology, 130 Meilong Road, Shanghai 200237, People’s Republic of China
- Department of Medicinal Chemistry, School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai 200433, People’s Republic of China
| | - Na Liu
- Department of Medicinal Chemistry, School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai 200433, People’s Republic of China
| | - Jie Tu
- Department of Medicinal Chemistry, School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai 200433, People’s Republic of China
| | - Zhuang Li
- School of Pharmacy, East China University of Science & Technology, 130 Meilong Road, Shanghai 200237, People’s Republic of China
- Department of Medicinal Chemistry, School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai 200433, People’s Republic of China
| | - Guiyan Han
- Department of Medicinal Chemistry, School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai 200433, People’s Republic of China
| | - Jian Li
- School of Pharmacy, East China University of Science & Technology, 130 Meilong Road, Shanghai 200237, People’s Republic of China
| | - Chunquan Sheng
- Department of Medicinal Chemistry, School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai 200433, People’s Republic of China
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65
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Benhadj M, Metrouh R, Menasria T, Gacemi-Kirane D, Slim FZ, Ranque S. Broad-spectrum antimicrobial activity of wetland-derived Streptomyces sp. ActiF450. EXCLI JOURNAL 2020; 19:360-371. [PMID: 32327957 PMCID: PMC7174574 DOI: 10.17179/excli2020-1124] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 03/07/2020] [Indexed: 12/30/2022]
Abstract
The increased incidence of invasive infections and the emerging problem of drug resistance particularly for commonly used molecules have prompted investigations for new, safe and more effective microbial agents. Actinomycetes from unexplored habitats appear as a promising source for novel bioactive compounds with a broad range of biological activities. Thus, the present study aimed to isolate effective wetland-derived actinomycetes against major pathogenic fungi and bacteria. Water samples were collected from various locations of Fetzara Lake, Algeria. Thereafter, an actinomycete designated ActiF450 was isolated using starch-casein-agar medium. The antimicrobial potential of the newly isolated actinomycete was screened using the conventional agar cylinders method on Potato Dextrose Agar (PDA) against various fungal and bacterial pathogens. A wetland-derived Streptomyces sp. Actif450 was identified as Streptomycesmalaysiensis based on its physiological properties, morphological characteristics, and 16S rDNA gene sequence analysis. The antimicrobial activity of Streptomyces sp. ActiF450 showed a potent and broad spectrum activity against a range of human fungal pathogens including moulds and yeasts, such as Arthroderma vanbreuseghemii, Aspergillus fumigatus, A. niger, Candida albicans, C. glabarta, C. krusei, C. parapsilosis, Fusarium oxysporum, F. solani, Microsporum canis, Rhodotorula mucilaginous and Scodapulariopsis candida. In addition, high antibacterial activity was recorded against pathogenic staphylococci. The novel Streptomyces sp. ActiF450 may present a promising candidate for the production of new bioactive compounds with broad-spectrum antimicrobial activity.
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Affiliation(s)
- Mabrouka Benhadj
- Department of Applied Biology, Faculty of Exact Sciences and Natural and Life Sciences, Larbi Tebessi University, 12002 Tebessa, Algeria.,Biomolecules and Application Laboratory, Faculty of Exact Sciences and Natural and Life Sciences, Larbi Tebessi University, 12002 Tebessa, Algeria
| | - Roumaisa Metrouh
- Department of Applied Biology, Faculty of Exact Sciences and Natural and Life Sciences, Larbi Tebessi University, 12002 Tebessa, Algeria
| | - Taha Menasria
- Department of Applied Biology, Faculty of Exact Sciences and Natural and Life Sciences, Larbi Tebessi University, 12002 Tebessa, Algeria
| | - Djamila Gacemi-Kirane
- Department of Biochemistry, Faculty of Science, University Badji Mokhtar Annaba, Annaba, 23000, Algeria
| | - Fatma Zohra Slim
- Department of Applied Biology, Faculty of Exact Sciences and Natural and Life Sciences, Larbi Tebessi University, 12002 Tebessa, Algeria
| | - Stephane Ranque
- Aix Marseille University, IRD, APHM, SSA, VITROME, IHU-Méditerranée Infection, 19-21 Boulevard Jean Moulin, 13005 Marseille, France
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66
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Altintop MD, Sever B, Eklioğlu ÖA, Baysal M, Demirel R, Özdemir A. A Series of Furan-based Hydrazones: Design, Synthesis, and Evaluation of Antimicrobial Activity, Cytotoxicity and Genotoxicity. LETT DRUG DES DISCOV 2020. [DOI: 10.2174/1570180816666190325163948] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
Hydrazones, frequently occurring motifs in many bioactive molecules, have
attracted a great deal of interest as potent antimicrobial agents.
Objective:
The aim of this work was to design and synthesize new hydrazone-based antimicrobial
agents.
Methods:
4-[2-((5-Arylfuran-2-yl)methylene)hydrazinyl]benzonitrile derivatives (1-10) were obtained
via the reaction of 4-cyanophenylhydrazine hydrochloride with 5-arylfurfurals. Compounds 1-10
were evaluated for their antimicrobial effects using a broth microdilution method. Their cytotoxic
effects on NIH/3T3 mouse embryonic fibroblast cell line were determined using XTT assay. The
most effective antimicrobial agents were investigated for their genotoxic effects using Ames MPF
assay. In silico docking and Absorption, Distribution, Metabolism and Excretion (ADME) studies
were also performed using Schrödinger’s Maestro molecular modeling package.
Results:
The antifungal effects of the compounds were more significant than their antibacterial effects.
Compound 5 bearing 3-nitrophenyl moiety was the most potent antifungal agent against Candida
albicans, Trichoderma harzianum and Fusarium species, whereas compound 10 bearing 4-
chloro-2-nitrophenyl moiety was the most effective antifungal agent on Aspergillus ochraceus. According
to XTT and Ames MPF assays, these compounds were neither cytotoxic nor genotoxic at the
concentrations tested. Docking studies suggested that these compounds showed good affinity to the
active site of lanosterol 14α-demethylase (CYP51) (PDB code: 5V5Z) and interacted with the key
residues such as Hem601 and Cys470. Based on in silico ADME studies, the compounds are expected
to have high oral bioavailability.
Conclusion:
According to the in vitro and in silico studies, compounds 5 and 10 stand out as potential
orally bioavailable antifungal agents for further studies.
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Affiliation(s)
- Mehlika Dilek Altintop
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, Eskisehir 26470, Turkey
| | - Belgin Sever
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, Eskisehir 26470, Turkey
| | - Özlem Atli Eklioğlu
- Department of Pharmaceutical Toxicology, Faculty of Pharmacy, Anadolu University, Eskisehir 26470, Turkey
| | - Merve Baysal
- Department of Pharmaceutical Toxicology, Faculty of Pharmacy, Anadolu University, Eskisehir 26470, Turkey
| | - Rasime Demirel
- Department of Biology, Faculty of Science, Eskişehir Technical University, Eskisehir 26000, Turkey
| | - Ahmet Özdemir
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, Eskisehir 26470, Turkey
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67
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Rauseo AM, Coler-Reilly A, Larson L, Spec A. Hope on the Horizon: Novel Fungal Treatments in Development. Open Forum Infect Dis 2020; 7:ofaa016. [PMID: 32099843 PMCID: PMC7031074 DOI: 10.1093/ofid/ofaa016] [Citation(s) in RCA: 125] [Impact Index Per Article: 31.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Accepted: 01/09/2020] [Indexed: 12/19/2022] Open
Abstract
The treatment of invasive fungal infections remains challenging due to limitations in currently available antifungal therapies including toxicity, interactions, restricted routes of administration, and drug resistance. This review focuses on novel therapies in clinical development, including drugs and a device. These drugs have novel mechanisms of action to overcome resistance, and some offer new formulations providing distinct advantages over current therapies to improve safety profiles and reduce interactions. Among agents that target the cell wall, 2 glucan synthesis inhibitors are discussed (rezafungin and ibrexafungerp), as well as fosmanogepix and nikkomycin Z. Agents that target the cell membrane include 3 fourth-generation azoles, oral encochleated amphotericin B, and aureobasidin A. Among agents with intracellular targets, we will review olorofim, VL-2397, T-2307, AR-12, and MGCD290. In addition, we will describe neurapheresis, a device used as adjunctive therapy for cryptococcosis. With a field full of novel treatments for fungal infections, the future looks promising.
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Affiliation(s)
- Adriana M Rauseo
- Division of Infectious Diseases, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri, USA
| | | | - Lindsey Larson
- Division of Infectious Diseases, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Andrej Spec
- Division of Infectious Diseases, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri, USA
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68
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Nerva L, Sandrini M, Gambino G, Chitarra W. Double-Stranded RNAs (dsRNAs) as a Sustainable Tool against Gray Mold ( Botrytis cinerea) in Grapevine: Effectiveness of Different Application Methods in an Open-Air Environment. Biomolecules 2020; 10:biom10020200. [PMID: 32013165 PMCID: PMC7072719 DOI: 10.3390/biom10020200] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2019] [Revised: 01/12/2020] [Accepted: 01/27/2020] [Indexed: 01/13/2023] Open
Abstract
Grapevine is one of the most important and globally widespread fruit species, with a high impact on the economy of many countries but with an intense environmental effect. Therefore, new environmentally friendly defense strategies against fungal pathogens are needed for more sustainable agriculture. A novel emerging approach is spray-induced gene silencing (SIGS), which concerns the exogenous application of double-stranded RNA (dsRNA) inducing enhanced plant resistance against fungal pathogens. Here, we tested the ability of SIGS to prevent and counteract infection of Botrytis cinerea, one of the most economically impacting pathogens of grapevine. In particular, we tested three independent approaches for dsRNA delivery into plants: (i) high pressure spraying of leaves; (ii) petiole adsorption of dsRNAs; (iii) postharvest spraying of bunches. We demonstrated that independently from the method of application, SIGS can reduce virulence of the fungus. Moreover, we also observed three different levels of efficacy depending on the method of application. Thus, the present data provide crucial information on the possibility to exploit SIGS as an alternative sustainable and ecofriendly strategy for grapevine pre- and postharvest protection.
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Affiliation(s)
- Luca Nerva
- Research Centre for Viticulture and Enology, Council for Agricultural Research and Economics (CREA-VE), Via XXVIII Aprile 26, 31015 Conegliano, Italy
- Institute for Sustainable Plant Protection, National Research Council (IPSP-CNR), Strada delle Cacce 73, 10135 Torino, Italy
- Correspondence: (L.N.); (W.C.); Tel.: +39-043-8456712 (L.N. & W.C.); Fax: +39-043-8450773 (L.N. & W.C.)
| | - Marco Sandrini
- Research Centre for Viticulture and Enology, Council for Agricultural Research and Economics (CREA-VE), Via XXVIII Aprile 26, 31015 Conegliano, Italy
- Dipartimento di Scienze Agroalimentari, Ambientali e Animali, Università degli Studi di Udine, Via delle Scienze 206, 33100 Udine, Italy
| | - Giorgio Gambino
- Institute for Sustainable Plant Protection, National Research Council (IPSP-CNR), Strada delle Cacce 73, 10135 Torino, Italy
| | - Walter Chitarra
- Research Centre for Viticulture and Enology, Council for Agricultural Research and Economics (CREA-VE), Via XXVIII Aprile 26, 31015 Conegliano, Italy
- Institute for Sustainable Plant Protection, National Research Council (IPSP-CNR), Strada delle Cacce 73, 10135 Torino, Italy
- Correspondence: (L.N.); (W.C.); Tel.: +39-043-8456712 (L.N. & W.C.); Fax: +39-043-8450773 (L.N. & W.C.)
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69
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Xu H, Su X, Liu XQ, Zhang KP, Hou Z, Guo C. Design, synthesis and biological evaluation of novel semicarbazone-selenochroman-4-ones hybrids as potent antifungal agents. Bioorg Med Chem Lett 2019; 29:126726. [DOI: 10.1016/j.bmcl.2019.126726] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2019] [Revised: 09/19/2019] [Accepted: 09/30/2019] [Indexed: 10/25/2022]
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70
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Petrucelli MF, Matsuda JB, Peroni K, Sanches PR, Silva WA, Beleboni RO, Martinez-Rossi NM, Marins M, Fachin AL. The Transcriptional Profile of Trichophyton rubrum Co-Cultured with Human Keratinocytes Shows New Insights about Gene Modulation by Terbinafine. Pathogens 2019; 8:pathogens8040274. [PMID: 31795354 PMCID: PMC6963840 DOI: 10.3390/pathogens8040274] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 11/20/2019] [Accepted: 11/22/2019] [Indexed: 11/16/2022] Open
Abstract
The dermatophyte Trichophyton rubrum is the main causative agent of dermatophytoses worldwide. Although a superficial mycosis, its incidence has been increasing especially among diabetic and immunocompromised patients. Terbinafine is commonly used for the treatment of infections caused by dermatophytes. However, cases of resistance of T. rubrum to this allylamine were reported even with the efficacy of this drug. The present study is the first to evaluate the effect of terbinafine using a co-culture model of T. rubrum and human keratinocytes, mimicking a fungus-host interaction, in conjunction with RNA-seq technique. Our data showed the repression of several genes involved in the ergosterol biosynthesis cascade and the induction of genes encoding major facilitator superfamily (MFS)- and ATP-binding cassette superfamily (ABC)-type membrane transporter which may be involved in T. rubrum mechanisms of resistance to this drug. We observed that some genes reported in the scientific literature as candidates of new antifungal targets were also modulated. In addition, we found the modulation of several genes that are hypothetical in T. rubrum but that possess known orthologs in other dermatophytes. Taken together, the results indicate that terbinafine can act on various targets related to the physiology of T. rubrum other than its main target of ergosterol biosynthetic pathway.
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Affiliation(s)
- Monise Fazolin Petrucelli
- Biotechnology Unit, University of Ribeirão Preto-UNAERP, Av. Costábile Romano 2201, Ribeirão Preto 14960-900, SP, Brazil; (M.F.P.); (J.B.M.); (R.O.B.); (M.M.)
| | - Josie Budag Matsuda
- Biotechnology Unit, University of Ribeirão Preto-UNAERP, Av. Costábile Romano 2201, Ribeirão Preto 14960-900, SP, Brazil; (M.F.P.); (J.B.M.); (R.O.B.); (M.M.)
| | - Kamila Peroni
- National Institute of Science and Technology in Stem Cell and Cell Therapy, Center for Cell-Based Therapy, Ribeirão Preto 14051-140, SP, Brazil; (K.P.)
| | - Pablo Rodrigo Sanches
- Department of Genetics, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14049-900, SP, Brazil; (P.R.S.); (N.M.M.-R.)
| | - Wilson Araújo Silva
- National Institute of Science and Technology in Stem Cell and Cell Therapy, Center for Cell-Based Therapy, Ribeirão Preto 14051-140, SP, Brazil; (K.P.)
- Department of Genetics, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14049-900, SP, Brazil; (P.R.S.); (N.M.M.-R.)
- Center for Integrative System Biology-CISBi-NAP/USP, University of São Paulo, Ribeirão Preto 14049-900, SP, Brazil
- Center for Medical Genomics, University Hospital of the Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14015-010, SP, Brazil
| | - Rene Oliveira Beleboni
- Biotechnology Unit, University of Ribeirão Preto-UNAERP, Av. Costábile Romano 2201, Ribeirão Preto 14960-900, SP, Brazil; (M.F.P.); (J.B.M.); (R.O.B.); (M.M.)
| | - Nilce Maria Martinez-Rossi
- Department of Genetics, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14049-900, SP, Brazil; (P.R.S.); (N.M.M.-R.)
| | - Mozart Marins
- Biotechnology Unit, University of Ribeirão Preto-UNAERP, Av. Costábile Romano 2201, Ribeirão Preto 14960-900, SP, Brazil; (M.F.P.); (J.B.M.); (R.O.B.); (M.M.)
| | - Ana Lúcia Fachin
- Biotechnology Unit, University of Ribeirão Preto-UNAERP, Av. Costábile Romano 2201, Ribeirão Preto 14960-900, SP, Brazil; (M.F.P.); (J.B.M.); (R.O.B.); (M.M.)
- Correspondence: or ; Fax: +55-16-36037030
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71
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Patil M, Wanjare S, Borse V, Srivastava R, Mehta P, Vavia P. Arginolipid: A membrane-active antifungal agent and its synergistic potential to combat drug resistance in clinical Candida isolates. Arch Pharm (Weinheim) 2019; 353:e1900180. [PMID: 31631383 DOI: 10.1002/ardp.201900180] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2019] [Revised: 09/10/2019] [Accepted: 09/22/2019] [Indexed: 11/05/2022]
Abstract
Antifungal drug resistance exhibits a major clinical challenge for treating nosocomial fungal infections. To find a possible solution, we synthesized and studied the antifungal activities of three different arginolipids (Nα -acyl-arginine ethyl ester) against clinical drug-resistant isolates of Candida. The most active arginolipid, oleoyl arginine ethyl ester (OAEE) consisting of a long unsaturated hydrophobic chain, was tested for its mode of action, which revealed that it altered ergosterol biosynthesis and compromised the fungal cell membrane. Also, OAEE was found to exhibit synergistic interactions with fluconazole (FLU) or amphotericin B (AmB) against planktonic Candida cells, wherein it reduced the inhibitory concentrations of these drugs to their in vitro susceptible range. Studies conducted against the C. tropicalis biofilm revealed that the OAEE+AmB combination synergistically reduced the metabolic activity and hyphal density in biofilms, whereas OAEE+FLU was found to be additive against most cases. Finally, the evaluated selective toxicity of OAEE toward fungal cells over mammalian cells could establish it as an alternative treatment for combating drug-resistant Candida infections.
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Affiliation(s)
- Mrunal Patil
- Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, Mumbai, India
| | - Shashir Wanjare
- Department of Microbiology, Seth G.S. Medical College and K.E.M. Hospital, Mumbai, India
| | - Vivek Borse
- Department of Biosciences and Bioengineering, Indian Institute of Technology-Bombay (IIT-B), Mumbai, India
| | - Rohit Srivastava
- Department of Biosciences and Bioengineering, Indian Institute of Technology-Bombay (IIT-B), Mumbai, India
| | - Preeti Mehta
- Department of Microbiology, Seth G.S. Medical College and K.E.M. Hospital, Mumbai, India
| | - Pradeep Vavia
- Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, Mumbai, India
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72
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Li K, Chen L, Fan YX, Wei Y, Yan SJ. Multicomponent Tether Catalysis Synthesis of Highly Functionalized 4-(Pyridin-2-ylmethyl)-2-aminopyrroles via Cascade Reaction Is Accompanied by Decarboxylation. J Org Chem 2019; 84:11971-11982. [DOI: 10.1021/acs.joc.9b01814] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Kun Li
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University), Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
| | - Li Chen
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University), Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
| | - Yun-Xiang Fan
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University), Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
| | - Yao Wei
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University), Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
| | - Sheng-Jiao Yan
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University), Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
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73
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Haranahalli K, Lazzarini C, Sun Y, Zambito J, Pathiranage S, McCarthy JB, Mallamo J, Del Poeta M, Ojima I. SAR Studies on Aromatic Acylhydrazone-Based Inhibitors of Fungal Sphingolipid Synthesis as Next-Generation Antifungal Agents. J Med Chem 2019; 62:8249-8273. [PMID: 31369263 DOI: 10.1021/acs.jmedchem.9b01004] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Recently, the fungal sphingolipid glucosylceramide (GlcCer) synthesis has emerged as a highly promising new target for drug discovery of next-generation antifungal agents, and we found two aromatic acylhydrazones as effective inhibitors of GlcCer synthesis based on HTP screening. In the present work, we have designed libraries of new aromatic acylhydrazones, evaluated their antifungal activities (MIC80 and time-kill profile) against C. neoformans, and performed an extensive SAR study, which led to the identification of five promising lead compounds, exhibiting excellent fungicidal activities with very large selectivity index. Moreover, two compounds demonstrated broad spectrum antifungal activity against six other clinically relevant fungal strains. These five lead compounds were examined for their synergism/cooperativity with five clinical drugs against seven fungal strains, and very encouraging results were obtained; e.g., the combination of all five lead compounds with voriconazole exhibited either synergistic or additive effect to all seven fungal strains.
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Affiliation(s)
- Krupanandan Haranahalli
- Institute of Chemical Biology and Drug Discovery , Stony Brook University , Stony Brook , New York 11794-3400 , United States.,Department of Chemistry , Stony Brook University , Stony Brook , New York 11794-3400 , United States
| | - Cristina Lazzarini
- Department of Molecular Genetics and Microbiology , Stony Brook University , Stony Brook , New York 11794-5222 , United States.,Veterans Administration Medical Center , Northport , New York 11768 , United States
| | - Yi Sun
- Department of Chemistry , Stony Brook University , Stony Brook , New York 11794-3400 , United States
| | - Julia Zambito
- Department of Chemistry , Stony Brook University , Stony Brook , New York 11794-3400 , United States
| | - Senuri Pathiranage
- Department of Chemistry , Stony Brook University , Stony Brook , New York 11794-3400 , United States
| | - J Brian McCarthy
- MicroRid Technologies Inc. , 86 Deer Park Road , Dix Hills , New York 11746 , United States
| | - John Mallamo
- MicroRid Technologies Inc. , 86 Deer Park Road , Dix Hills , New York 11746 , United States
| | - Maurizio Del Poeta
- Institute of Chemical Biology and Drug Discovery , Stony Brook University , Stony Brook , New York 11794-3400 , United States.,Department of Molecular Genetics and Microbiology , Stony Brook University , Stony Brook , New York 11794-5222 , United States.,Veterans Administration Medical Center , Northport , New York 11768 , United States.,Division of Infectious Diseases, School of Medicine , Stony Brook University , New York 11794-8434 , United States
| | - Iwao Ojima
- Institute of Chemical Biology and Drug Discovery , Stony Brook University , Stony Brook , New York 11794-3400 , United States.,Department of Chemistry , Stony Brook University , Stony Brook , New York 11794-3400 , United States
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74
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Li Z, Liu N, Tu J, Ji C, Han G, Sheng C. Discovery of Simplified Sampangine Derivatives with Potent Antifungal Activities against Cryptococcal Meningitis. ACS Infect Dis 2019; 5:1376-1384. [PMID: 31070884 DOI: 10.1021/acsinfecdis.9b00086] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Cryptococcal meningitis (CM) is associated with high morbidity and mortality. Current antifungal drug therapy for CM has the following challenges: limited efficacy, significant side effects, emerging drug resistance, and unavailability in highly needed countries. There is an urgent need to develop novel CM therapeutic agents with a new mode of action. On the basis of the antifungal natural product sampangine, herein, novel simplified isoxazole derivatives were identified to possess excellent inhibitory activity against Cryptococcus neoformans (C. neoformans). Particularly, compound 9a was highly active (the minimum inhibitory concentration of 80% inhibition, MIC80 = 0.031 μg/mL) and significantly inhibited biofilm formation, melanin, and urease production of C. neoformans. 9a had good blood-brain barrier (BBB) permeability and effectively reduced the brain fungal burden in a murine model of cryptococcosis. The antifungal mechanism of compound 9a was preliminarily investigated by transmission electron microscopy and flow cytometry. It was able to cause necrocytosis of C. neoformans cells and cell cycle arrest in the G1/S phase. Isoxazole compound 9a represents a promising lead compound for the development of novel CM therapeutic agents.
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Affiliation(s)
- Zhuang Li
- School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai 200433, People’s Republic of China
- School of Pharmacy, Fujian University of Traditional Chinese Medicine, 1 Qiuyang Road, Fuzhou, Fujian 350122, People’s Republic of China
| | - Na Liu
- School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai 200433, People’s Republic of China
| | - Jie Tu
- School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai 200433, People’s Republic of China
| | - Changjin Ji
- School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai 200433, People’s Republic of China
| | - Guiyan Han
- School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai 200433, People’s Republic of China
| | - Chunquan Sheng
- School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai 200433, People’s Republic of China
- School of Pharmacy, Fujian University of Traditional Chinese Medicine, 1 Qiuyang Road, Fuzhou, Fujian 350122, People’s Republic of China
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75
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Schoeters F, Van Dijck P. Protein-Protein Interactions in Candida albicans. Front Microbiol 2019; 10:1792. [PMID: 31440220 PMCID: PMC6693483 DOI: 10.3389/fmicb.2019.01792] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Accepted: 07/19/2019] [Indexed: 12/27/2022] Open
Abstract
Despite being one of the most important human fungal pathogens, Candida albicans has not been studied extensively at the level of protein-protein interactions (PPIs) and data on PPIs are not readily available in online databases. In January 2018, the database called "Biological General Repository for Interaction Datasets (BioGRID)" that contains the most PPIs for C. albicans, only documented 188 physical or direct PPIs (release 3.4.156) while several more can be found in the literature. Other databases such as the String database, the Molecular INTeraction Database (MINT), and the Database for Interacting Proteins (DIP) database contain even fewer interactions or do not even include C. albicans as a searchable term. Because of the non-canonical codon usage of C. albicans where CUG is translated as serine rather than leucine, it is often problematic to use the yeast two-hybrid system in Saccharomyces cerevisiae to study C. albicans PPIs. However, studying PPIs is crucial to gain a thorough understanding of the function of proteins, biological processes and pathways. PPIs can also be potential drug targets. To aid in creating PPI networks and updating the BioGRID, we performed an exhaustive literature search in order to provide, in an accessible format, a more extensive list of known PPIs in C. albicans.
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Affiliation(s)
- Floris Schoeters
- VIB-KU Leuven Center for Microbiology, Leuven, Belgium
- Laboratory of Molecular Cell Biology, Institute of Botany and Microbiology, KU Leuven, Leuven, Belgium
| | - Patrick Van Dijck
- VIB-KU Leuven Center for Microbiology, Leuven, Belgium
- Laboratory of Molecular Cell Biology, Institute of Botany and Microbiology, KU Leuven, Leuven, Belgium
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Emami S, Ghobadi E, Saednia S, Hashemi SM. Current advances of triazole alcohols derived from fluconazole: Design, in vitro and in silico studies. Eur J Med Chem 2019; 170:173-194. [DOI: 10.1016/j.ejmech.2019.03.020] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 01/13/2019] [Accepted: 03/06/2019] [Indexed: 01/05/2023]
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77
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Luo Q, Huang R, Xiao Q, Kong LB, Lin J, Yan SJ. Cascade Reaction of 1,1-Enediamines with 2-Benzylidene-1 H-indene-1,3(2 H)-diones: Selective Synthesis of Indenodihydropyridine and Indenopyridine Compounds. ACS OMEGA 2019; 4:6637-6646. [PMID: 31459789 PMCID: PMC6648820 DOI: 10.1021/acsomega.9b00407] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Accepted: 03/04/2019] [Indexed: 06/10/2023]
Abstract
A concise and environmentally friendly route for the synthesis of diverse indenodihydropyridines (3) via a cascade reaction of 1,1-eneamines (1) with benzylidene-1H-indene-1,3(2H)-diones (BIDs) (2) in ethanol media was developed. The targeted compounds were efficiently obtained by only filtration without any further post-treatment. In the one-step cascade reaction, C-C and C-N bonds were constructed. In addition, when 1,4-dioxane was used as a solvent and the mixture of 1,1-eneamines (1) was refluxed with benzylidene-1H-indene-1,3(2H)-diones (BIDs) (2) for about 12 h, indenopyridine compounds (4) were produced. Two kinds of indenopyridine derivatives 3-4 resulted from alternative solvents and temperatures. The reaction had the following features: mild temperature, atom economy, high yields, and potential biological activity of the product.
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Affiliation(s)
| | | | | | | | - Jun Lin
- E-mail: . Tel/fax: +86 87165031633 (J.L.)
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78
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Kong L, Yan S, Yao Y, Xiao Q, Lin J. Cascade Reactions Utilizing the Nucleophilic Properties of 1,1‐Enediamines for the Regioselective Synthesis of 4‐Aryl‐2‐aminopyridines. ChemistrySelect 2019. [DOI: 10.1002/slct.201900026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ling‐Bin Kong
- Key Laboratory of Medicinal Chemistry for Natural ResourceMinistry Education, School of Chemical Science and TechnologyYunnan University Kunming 650091, P. R. China
| | - Sheng‐Jiao Yan
- Key Laboratory of Medicinal Chemistry for Natural ResourceMinistry Education, School of Chemical Science and TechnologyYunnan University Kunming 650091, P. R. China
| | - Yuan Yao
- Key Laboratory of Medicinal Chemistry for Natural ResourceMinistry Education, School of Chemical Science and TechnologyYunnan University Kunming 650091, P. R. China
| | - Qiang Xiao
- Key Laboratory of Medicinal Chemistry for Natural ResourceMinistry Education, School of Chemical Science and TechnologyYunnan University Kunming 650091, P. R. China
| | - Jun Lin
- Key Laboratory of Medicinal Chemistry for Natural ResourceMinistry Education, School of Chemical Science and TechnologyYunnan University Kunming 650091, P. R. China
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79
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Li Z, Liu N, Tu J, Ji C, Han G, Wang Y, Sheng C. Discovery of novel simplified isoxazole derivatives of sampangine as potent anti-cryptococcal agents. Bioorg Med Chem 2019; 27:832-840. [DOI: 10.1016/j.bmc.2019.01.029] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 01/19/2019] [Accepted: 01/23/2019] [Indexed: 10/27/2022]
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80
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Zi QX, Yan SJ, Yang CL, Li K, Lin J. Three-Component Cascade Reaction of 1,1-Enediamines, N, N-Dimethylformamide Dimethyl Acetal, and 1,3-Dicarbonyl Compounds: Selective Synthesis of Diverse 2-Aminopyridine Derivatives. ACS OMEGA 2019; 4:2863-2873. [PMID: 31459516 PMCID: PMC6648487 DOI: 10.1021/acsomega.8b03284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Accepted: 01/25/2019] [Indexed: 06/10/2023]
Abstract
A novel approach has been developed for the synthesis of three kinds of highly functionalized 2-aminopyridine derivatives (APDs) through a three-component reaction of 1,1-enediamines (EDAMs) 1, N,N-dimethylformamide dimethyl acetal (DMF-DMA) 2, and 1,3-dicarbonyl compounds 3-5 via a base-promoted cascade reaction, producing the desired products in good to excellent yields. This method represents a route to obtain a novel class of APDs in a concise, rapid, and practical manner. This approach is particularly attractive because of the following features: low cost, mild temperature, atom economy, high yields, and potential biological activity of the product.
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Affiliation(s)
| | | | | | | | - Jun Lin
- E-mail: Phone/Fax: +86 87165031633 (J. L.)
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81
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Tu J, Li Z, Jiang Y, Ji C, Han G, Wang Y, Liu N, Sheng C. Discovery of Carboline Derivatives as Potent Antifungal Agents for the Treatment of Cryptococcal Meningitis. J Med Chem 2019; 62:2376-2389. [PMID: 30753074 DOI: 10.1021/acs.jmedchem.8b01598] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Clinical treatment of cryptococcal meningitis (CM) remains a significant challenge because of the lack of effective and safe drug therapies. Developing novel CM therapeutic agents with novel chemical scaffolds and new modes of action is of great importance. Herein, new β-hexahydrocarboline derivatives are shown to possess potent anticryptococcal activities. In particular, compound A4 showed potent in vitro and in vivo anticryptococcal activity with good metabolic stability and blood-brain barrier permeability. Compound A4 was orally active and could significantly reduce brain fungal burdens in a murine model of CM. Moreover, compound A4 could inhibit several virulence factors of Cryptococcus neoformans and might act by a new mode of action. Preliminary mechanistic studies revealed that compound A4 induced DNA double-stranded breaks and cell cycle arrest at the G2 phase by acting on the Cdc25c/CDK1/cyclin B pathway. Taken together, β-hexahydrocarboline A4 represents a promising lead compound for the development of next-generation CM therapeutic agents.
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Affiliation(s)
- Jie Tu
- Department of Medicinal Chemistry, School of Pharmacy , Second Military Medical University , 325 Guohe Road , Shanghai 200433 , People's Republic of China
| | - Zhuang Li
- Department of Medicinal Chemistry, School of Pharmacy , Second Military Medical University , 325 Guohe Road , Shanghai 200433 , People's Republic of China
| | - Yanjuan Jiang
- Department of Medicinal Chemistry, School of Pharmacy , Second Military Medical University , 325 Guohe Road , Shanghai 200433 , People's Republic of China
| | - Changjin Ji
- Department of Medicinal Chemistry, School of Pharmacy , Second Military Medical University , 325 Guohe Road , Shanghai 200433 , People's Republic of China
| | - Guiyan Han
- Department of Medicinal Chemistry, School of Pharmacy , Second Military Medical University , 325 Guohe Road , Shanghai 200433 , People's Republic of China
| | - Yan Wang
- Department of Medicinal Chemistry, School of Pharmacy , Second Military Medical University , 325 Guohe Road , Shanghai 200433 , People's Republic of China
| | - Na Liu
- Department of Medicinal Chemistry, School of Pharmacy , Second Military Medical University , 325 Guohe Road , Shanghai 200433 , People's Republic of China
| | - Chunquan Sheng
- Department of Medicinal Chemistry, School of Pharmacy , Second Military Medical University , 325 Guohe Road , Shanghai 200433 , People's Republic of China
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82
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Luo Q, Huang R, Xiao Q, Yao Y, Lin J, Yan SJ. Highly Selective Synthesis of 2-Amino-4,6-diarylpyridine Derivatives by the Cascade Reaction of 1,1-Enediamines with α,β-Unsaturated Ketones. J Org Chem 2019; 84:1999-2011. [DOI: 10.1021/acs.joc.8b03008] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Qin Luo
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming 650091, P.R. China
| | - Rong Huang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming 650091, P.R. China
| | - Qiang Xiao
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming 650091, P.R. China
| | - Yuan Yao
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming 650091, P.R. China
| | - Jun Lin
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming 650091, P.R. China
| | - Sheng-Jiao Yan
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming 650091, P.R. China
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83
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Allosteric Modulators of Protein-Protein Interactions (PPIs). ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1163:313-334. [PMID: 31707709 DOI: 10.1007/978-981-13-8719-7_13] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Protein-protein interactions (PPIs) represent promising drug targets of broad-spectrum therapeutic interests due to their critical implications in both health and disease circumstances. Hence, they are widely accepted as the Holy Grail of drug development. Historically, PPIs were rendered "undruggable" for their large, flat, and pocket-less structures. Current attempts to drug these "intractable" targets include orthosteric and allosteric methodologies. Previous efforts employing orthosteric approaches like protein therapeutics and orthosteric small molecules frequently suffered from poor performance caused by the difficulties in directly targeting PPI interfaces. As structural biology progresses rapidly, allosteric modulators, which direct to the allosteric regulatory sites remote to the PPI surfaces, have gradually established as a potential solution. Allosteric pockets are topologically distal from the PPI orthosteric sites, and their ligands do not need to compete with the PPI partners, which helps to improve the physiochemical and pharmacological properties of allosteric PPI modulators. Thus, exploiting allostery to tailor PPIs is regarded as a tempting strategy in future PPI drug discovery. Here, we provide a comprehensive review of our representative achievements along the way we utilize allosteric effects to tame the difficult PPI systems into druggable targets. Importantly, we provide an in-depth mechanistic analysis of this success, which will be instructive to future related lead optimizations and drug design. Finally, we discuss the current challenges in allosteric PPI drug discovery. Their solutions as well as future perspectives are also presented.
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