1
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Sang YL, Pannecouque C, De Clercq E, Wang S, Chen FE. Picomolar inhibitor of reverse transcriptase featuring significantly improved metabolic stability. Acta Pharm Sin B 2023. [PMID: 37521857 PMCID: PMC10372819 DOI: 10.1016/j.apsb.2023.03.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023] Open
Abstract
Considering the undesirable metabolic stability of our recently identified NNRTI 5 (t1/2 = 96 min) in human liver microsomes, we directed our efforts to improve its metabolic stability by introducing a new favorable hydroxymethyl side chain to the C-5 position of pyrimidine. This strategy provided a series of novel methylol-biphenyl-diarylpyrimidines with excellent anti-HIV-1 activity. The best compound 9g was endowed with remarkably improved metabolic stability in human liver microsomes (t1/2 = 2754 min), which was about 29-fold longer than that of 5 (t1/2 = 96 min). This compound conferred picomolar inhibition of WT HIV-1 (EC50 = 0.9 nmol/L) and low nanomolar activity against five clinically drug-resistant mutant strains. It maintained particularly low cytotoxicity (CC50 = 264 μmol/L) and good selectivity (SI = 256,438). Molecular docking studies revealed that compound 9g exhibited a more stable conformation than 5 due to the newly constructed hydrogen bond of the hydroxymethyl group with E138. Also, compound 9g was characterized by good safety profiles. It displayed no apparent inhibition of CYP enzymes and hERG. The acute toxicity assay did not cause death and pathological damage in mice at a single dose of 2 g/kg. These findings paved the way for the discovery and development of new-generation anti-HIV-1 drugs.
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2
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Ming W, Lu WL, Pannecouque C, Chen J, Wang HF, Xiao YQ, Hu S, Gu SX, Zhu YY, Chen FE. Hybrids of delavirdine and piperdin-4-yl-aminopyrimidines (DPAPYs) as potent HIV-1 NNRTIs: Design, synthesis and biological activities. Eur J Med Chem 2023; 248:115114. [PMID: 36640458 DOI: 10.1016/j.ejmech.2023.115114] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 01/01/2023] [Accepted: 01/09/2023] [Indexed: 01/12/2023]
Abstract
The hybrids of delavirdine and piperdin-4-yl-aminopyrimidine (DPAPYs) were designed from two excellent HIV-1 NNRTIs delavirdine and piperidin-4-yl-aminopyrimidine via molecular hybridization. The target compounds 4a-r were prepared and evaluated for their cellular anti-HIV activities and cytotoxicities as well as the inhibitory activities against HIV-1 reverse transcriptase (RT). All the newly synthesized compounds demonstrated moderate to excellent potency against wild-type (WT) HIV-1 with EC50 values in a range of 5.7 to 0.0086 μM and against RT with IC50 values ranging from 12.0 to 0.11 μM, indicating that the DPAPYs were specific RT inhibitors. Among all, 4d displayed the most potent activity against WT HIV-1 (EC50 = 8.6 nM, SI = 2151). Gratifyingly, it exhibited good to excellent potency against the single HIV-1 mutants L100I, K103N, Y181C, Y188L, E138K, as well as the double mutant F227L + V106A. Furthermore, the preliminary structure-activity relationships were summarized, molecular modeling was conducted to explore the binding mode of DPAPYs and HIV-1 RT, and their physicochemical properties were also predicted.
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Affiliation(s)
- Wei Ming
- Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemical Engineering & Pharmacy, Wuhan Institute of Technology, Wuhan, 430205, China
| | - Wen-Long Lu
- Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemical Engineering & Pharmacy, Wuhan Institute of Technology, Wuhan, 430205, China
| | - Christophe Pannecouque
- KU Leuven, Department of Microbiology and Immunology, Laboratory of Virology and Chemotherapy, Rega Institute for Medical Research, B-3000, Leuven, Belgium
| | - Jiong Chen
- Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemical Engineering & Pharmacy, Wuhan Institute of Technology, Wuhan, 430205, China
| | - Hai-Feng Wang
- Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemical Engineering & Pharmacy, Wuhan Institute of Technology, Wuhan, 430205, China; Pharmaceutical Research Institute, Wuhan Institute of Technology, Wuhan, 430205, China
| | - Ya-Qi Xiao
- Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemical Engineering & Pharmacy, Wuhan Institute of Technology, Wuhan, 430205, China
| | - Sha Hu
- Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemical Engineering & Pharmacy, Wuhan Institute of Technology, Wuhan, 430205, China
| | - Shuang-Xi Gu
- Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemical Engineering & Pharmacy, Wuhan Institute of Technology, Wuhan, 430205, China; Pharmaceutical Research Institute, Wuhan Institute of Technology, Wuhan, 430205, China.
| | - Yuan-Yuan Zhu
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430205, China.
| | - Fen-Er Chen
- Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemical Engineering & Pharmacy, Wuhan Institute of Technology, Wuhan, 430205, China; Department of Chemistry, Fudan University, Shanghai, 200433, China; Pharmaceutical Research Institute, Wuhan Institute of Technology, Wuhan, 430205, China.
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3
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Ling X, Hao QQ, Pannecouque C, Clercq ED, Chen FE. Expansion of the S–CN-DABO scaffold to exploit the impact on inhibitory activities against the non-nucleoside HIV-1 reverse transcriptase. Eur J Med Chem 2022; 238:114512. [DOI: 10.1016/j.ejmech.2022.114512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 05/23/2022] [Accepted: 05/31/2022] [Indexed: 11/04/2022]
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4
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Structure-Based Design of [(2-Hydroxyethoxy)methyl]-6-(phenylthio)-thymine Derivatives as Nonnucleoside HIV-1 Reverse Transcriptase Inhibitors: from HEPTs to Sulfinyl-substituted HEPTs. Bioorg Chem 2022; 126:105880. [DOI: 10.1016/j.bioorg.2022.105880] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 05/14/2022] [Accepted: 05/16/2022] [Indexed: 12/25/2022]
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5
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Ding L, Pannecouque C, De Clercq E, Zhuang C, Chen FE. Discovery of Novel Pyridine-Dimethyl-Phenyl-DAPY Hybrids by Molecular Fusing of Methyl-Pyrimidine-DAPYs and Difluoro-Pyridinyl-DAPYs: Improving the Druggability toward High Inhibitory Activity, Solubility, Safety, and PK. J Med Chem 2022; 65:2122-2138. [DOI: 10.1021/acs.jmedchem.1c01676] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Li Ding
- Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai 200433, China
- Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Drugs, Shanghai 200433, China
| | | | - Erik De Clercq
- Rega Institute for Medical Research, KU Leuven, Herestraat 49, Leuven B-3000, Belgium
| | - Chunlin Zhuang
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai 200433, China
- Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Drugs, Shanghai 200433, China
| | - Fen-Er Chen
- Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai 200433, China
- Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Drugs, Shanghai 200433, China
- Institute of Pharmaceutical Science and Technology, Zhejiang University of Technology, 18 Chao Wang Road, Hangzhou 310014, China
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6
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Ding L, Pannecouque C, De Clercq E, Zhuang C, Chen FE. Improving Druggability of Novel Diarylpyrimidine NNRTIs by a Fragment-Based Replacement Strategy: From Biphenyl-DAPYs to Heteroaromatic-Biphenyl-DAPYs. J Med Chem 2021; 64:10297-10311. [PMID: 34197708 DOI: 10.1021/acs.jmedchem.1c00708] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
A series of novel heteroaromatic-difluoro-biphenyl-diarylpyrimidines were designed as non-nucleoside anti-HIV inhibitors targeting reverse transcriptase by a fragment-based replacement strategy with the purpose of improving the druggability. Hopping five- or six-membered heterocycle groups on the biphenyl moiety as bioisosterism for intrinsically cyanophenyl gave 23 derivatives. All of these compounds possessed excellent HIV-1 inhibitory activity in the nanomolar range. Among them, 12g with a 4-pyridine group displayed excellent inhibitory activity toward WT and mutant HIV virus possessing significant selectivity. Moreover, this compound exhibited a decent improvement in druggability than etravirine and rilpivirine: (1) The hydrochloric acid salt of 12g exhibited significantly improved water solubility in different pH conditions. (2) 12g did not show apparent CYP enzymatic inhibitory activity or acute toxicity. (3) Excellent oral bioavailability was also revealed (F = 126%, rats) in 12g. Collectively, these novel heteroaromatic-biphenyl-DAPYs represent promising drug candidates for HIV clinical therapy.
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Affiliation(s)
- Li Ding
- Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China.,Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai 200433, China.,Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Drugs, Shanghai 200433, China
| | | | - Erik De Clercq
- Rega Institute for Medical Research, KU Leuven, Herestraat 49, B-3000 Leuven, Belgium
| | - Chunlin Zhuang
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai 200433, China.,Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Drugs, Shanghai 200433, China
| | - Fen-Er Chen
- Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China.,Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai 200433, China.,Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Drugs, Shanghai 200433, China.,Institute of Pharmaceutical Science and Technology, Zhejiang University of Technology, 18 Chao Wang Road, Hangzhou 310014, China
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7
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Ding L, Pannecouque C, De Clercq E, Zhuang C, Chen FE. Hydrophobic Pocket Occupation Design of Difluoro-Biphenyl-Diarylpyrimidines as Non-Nucleoside HIV-1 Reverse Transcriptase Inhibitors: from N-Alkylation to Methyl Hopping on the Pyrimidine Ring. J Med Chem 2021; 64:5067-5081. [PMID: 33851529 DOI: 10.1021/acs.jmedchem.1c00128] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Considering the nonideal metabolic stability of the difluoro-biphenyl-diarylpyrimidine lead compound 4, a series of novel alkylated difluoro-biphenyl-diarylpyrimidines were designed and synthesized based on their structure. Introducing alkyl or substituted alkyl groups on the linker region to block the potential metabolic sensitive sites generated 22 derivatives. Among them, compound 12a with an N-methyl group displayed excellent anti-HIV-1 activity and selectivity. The methyl group was hopped to the central pyrimidine to occupy the small linker region and maintain the water-mediated hydrogen bond observed in the binding of compound 4 with RT. The resulting compound 16y exhibited an improved anti-HIV-1 activity, much lower cytotoxicity, and nanomolar activity toward multiple mutants. In addition, 16y has a better stability in human liver microsomes than 4. Moreover, no apparent in vivo acute toxicity was observed in 16y-treated female, especially pregnant mice. This series of alkylated compounds with highly potency and safety represent a promising lead template for future discovery.
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Affiliation(s)
- Li Ding
- Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China.,Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai 200433, China.,Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Drugs, Shanghai 200433, China
| | | | - Erik De Clercq
- Rega Institute for Medical Research, KU Leuven, Herestraat 49, B-3000 Leuven, Belgium
| | - Chunlin Zhuang
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai 200433, China.,Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Drugs, Shanghai 200433, China
| | - Fen-Er Chen
- Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China.,Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai 200433, China.,Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Drugs, Shanghai 200433, China.,Institute of Pharmaceutical Science and Technology, Zhejiang University of Technology, 18 Chao Wang Road, 310014 Hangzhou, China
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8
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Seetaha S, Ratanabunyong S, Tabtimmai L, Choowongkomon K, Rattanasrisomporn J, Choengpanya K. Anti-feline immunodeficiency virus reverse transcriptase properties of some medicinal and edible mushrooms. Vet World 2020; 13:1798-1806. [PMID: 33132590 PMCID: PMC7566271 DOI: 10.14202/vetworld.2020.1798-1806] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Accepted: 07/06/2020] [Indexed: 01/27/2023] Open
Abstract
Background and Aim Feline immunodeficiency virus (FIV) causes AIDS-like symptoms in domestic and wild cats. Treatment of infected cats has been performed using human anti-HIV drugs, which showed some limitations. This study aimed to determine the anti-FIV potential of some mushrooms. Materials and Methods A total of 17 medicinal and edible mushrooms were screened to find their inhibitory effect against FIV reverse transcriptase (FIV-RT). Three solvents, water, ethanol, and hexane, were used to prepare crude mushroom extracts. Fluorescence spectroscopy was used to perform relative inhibition and 50% inhibitory concentrations (IC50) studies. Results The ethanol extract from dried fruiting bodies of Inonotus obliquus showed the strongest inhibition with an IC50 value of 0.80±0.16 μg/mL. The hexane extract from dried mycelium of I. obliquus and ethanol and water extracts from fresh fruit bodies of Phellinus igniarius also exhibited strong activities with the IC50 values of 1.22±0.20, 4.33±0.39, and 6.24±1.42 μg/mL, respectively. The ethanol extract from fresh fruiting bodies of Cordyceps sinensis, hexane extracts from dried mycelium of I. obliquus, ethanol extracts of Ganoderma lucidum, hexane extracts of fresh fruiting bodies of Morchella esculenta, and fresh fruiting bodies of C. sinensis showed moderate anti-FIV-RT activities with IC50 values of 29.73±12.39, 49.97±11.86, 65.37±14.14, 77.59±8.31, and 81.41±17.10 μg/mL, respectively. These mushroom extracts show anti-FIV potential. Conclusion The extracts from I. obliquus, P. igniarius, C. sinensis, and M. esculenta showed potential anti-FIV activity.
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Affiliation(s)
- Supaphorn Seetaha
- Center for Advanced Studies for Agriculture and Food, Institute for Advanced Studies, Kasetsart University, Bangkok 10900, Thailand.,Department of Biochemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand
| | - Siriluk Ratanabunyong
- Department of Biochemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand.,Interdisciplinary Graduate Program in Bioscience, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand
| | - Lueacha Tabtimmai
- Department of Biochemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand
| | - Kiattawee Choowongkomon
- Department of Biochemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand
| | - Jatuporn Rattanasrisomporn
- Center for Advanced Studies for Agriculture and Food, Institute for Advanced Studies, Kasetsart University, Bangkok 10900, Thailand.,Department of Companion Animal Clinical Sciences, Faculty of Veterinary Medicine, Kasetsart University, Bangkok 10900, Thailand
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9
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Chen X, Ding L, Tao Y, Pannecouque C, De Clercq E, Zhuang C, Chen FE. Bioisosterism-based design and enantiomeric profiling of chiral hydroxyl-substituted biphenyl-diarylpyrimidine nonnucleoside HIV-1 reverse transcriptase inhibitors. Eur J Med Chem 2020; 202:112549. [DOI: 10.1016/j.ejmech.2020.112549] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 05/25/2020] [Accepted: 06/05/2020] [Indexed: 12/16/2022]
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10
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Yang Y, Pannecouque C, Clercq ED, Zhuang C, Chen FE. Privileged scaffold inspired design of novel oxime-biphenyl-DAPYs in treatment of HIV-1. Bioorg Chem 2020; 99:103825. [DOI: 10.1016/j.bioorg.2020.103825] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Revised: 03/11/2020] [Accepted: 04/05/2020] [Indexed: 11/24/2022]
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11
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Han S, Sang Y, Wu Y, Tao Y, Pannecouque C, De Clercq E, Zhuang C, Chen FE. Molecular Hybridization-Inspired Optimization of Diarylbenzopyrimidines as HIV-1 Nonnucleoside Reverse Transcriptase Inhibitors with Improved Activity against K103N and E138K Mutants and Pharmacokinetic Profiles. ACS Infect Dis 2020; 6:787-801. [PMID: 31599568 DOI: 10.1021/acsinfecdis.9b00229] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Molecular hybridization is a powerful strategy in drug discovery. A series of novel diarylbenzopyrimidine (DABP) analogues were developed by the hybridization of FDA-approved drugs etravirine (ETR) and efavirenz (EFV) as potential HIV-1 nonnucleoside reverse transcriptase inhibitors (NNRTIs). Substituent modifications resulted in the identification of new DABPs with the combination of the strengths of the two drugs, especially compound 12d, which showed promising activity toward the EFV-resistant K103N mutant. 12d also had a favorable pharmacokinetic (PK) profile with liver microsome clearances of 14.4 μL/min/mg (human) and 33.2 μL/min/mg (rat) and an oral bioavailability of 15.5% in rat. However, its activity against the E138K mutant was still unsatisfactory; E138K is the most prevalent NNRTI resistance-associated mutant in ETR treatment. Further optimizations resulted in a highly potent compound (12z) with no substituents on the phenyl ring and a 2-methyl-6-nitro substitution pattern on the 4-cyanovinyl-2,6-disubstitued phenyl motif. The antiviral activity of this compound was much higher than those of ETR and EFV against the WT, E138K, and K103N variants (EC50 = 3.4, 4.3, and 3.6 nM, respectively), and the cytotoxicity was decreased while the selectivity index (SI) was increased. In particular, this compound exhibited acceptable intrinsic liver microsome stability (human, 34.5 μL/min/mg; rat, 33.2 μL/min/mg) and maintained the good PK profile of its parent compound EFV and showed an oral bioavailability of 16.5% in rat. Molecular docking and structure-activity relationship (SAR) analysis provided further insights into the binding of the DABPs with HIV-1 reverse transcriptase and provided a deeper understanding of the key structural features responsible for their interactions.
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Affiliation(s)
- Sheng Han
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai 200433, People’s Republic of China
- Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Drugs, Shanghai 200433, People’s Republic of China
| | - Yali Sang
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai 200433, People’s Republic of China
- Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Drugs, Shanghai 200433, People’s Republic of China
| | - Yan Wu
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai 200433, People’s Republic of China
- Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Drugs, Shanghai 200433, People’s Republic of China
| | - Yuan Tao
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai 200433, People’s Republic of China
- Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Drugs, Shanghai 200433, People’s Republic of China
| | | | - Erik De Clercq
- Rega Institute for Medical Research, KU Leuven, Herestraat 49, B-3000 Leuven, Belgium
| | - Chunlin Zhuang
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai 200433, People’s Republic of China
- Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Drugs, Shanghai 200433, People’s Republic of China
| | - Fen-Er Chen
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai 200433, People’s Republic of China
- Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Drugs, Shanghai 200433, People’s Republic of China
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12
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Li TT, Pannecouque C, De Clercq E, Zhuang CL, Chen FE. Scaffold Hopping in Discovery of HIV-1 Non-Nucleoside Reverse Transcriptase Inhibitors: From CH(CN)-DABOs to CH(CN)-DAPYs. Molecules 2020; 25:E1581. [PMID: 32235557 PMCID: PMC7180830 DOI: 10.3390/molecules25071581] [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: 02/21/2020] [Revised: 03/18/2020] [Accepted: 03/24/2020] [Indexed: 01/15/2023] Open
Abstract
Scaffold hopping is a frequently-used strategy in the development of non-nucleoside reverse transcriptase inhibitors. Herein, CH(CN)-DAPYs were designed by hopping the cyano-methylene linker of our previous published CH(CN)-DABOs onto the etravirine (ETR). Eighteen CH(CN)-DAPYs were synthesized and evaluated for their anti-HIV activity. Most compounds exhibited promising activity against wild-type (WT) HIV-1. Compounds B4 (EC50 = 6 nM) and B6 (EC50 = 8 nM) showed single-digit nanomolar potency against WT HIV-1. Moreover, these two compounds had EC50 values of 0.06 and 0.08 μM toward the K103N mutant, respectively, which were comparable to the reference efavirenz (EFV) (EC50 = 0.08 μM). The preliminary structure-activity relationship (SAR) indicated that introducing substitutions on C2 of the 4-cyanophenyl group could improve antiviral activity. Molecular docking predicted that the cyano-methylene linker was positioned into the hydrophobic cavity formed by Y181/Y188 and V179 residues.
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Affiliation(s)
- Ting-Ting Li
- Institute of Pharmaceutical Science and Technology, Zhejiang University of Technology, Hangzhou 310014, China;
| | - Christophe Pannecouque
- Rega Institute for Medical Research, KU Leuven, Herestraat 49, B-3000 Leuven, Belgium; (C.P.); (E.D.C.)
| | - Erik De Clercq
- Rega Institute for Medical Research, KU Leuven, Herestraat 49, B-3000 Leuven, Belgium; (C.P.); (E.D.C.)
| | - Chun-Lin Zhuang
- Department of Chemistry, Fudan University, Shanghai 200433, China
- Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Drugs, Shanghai 200433, China
| | - Fen-Er Chen
- Institute of Pharmaceutical Science and Technology, Zhejiang University of Technology, Hangzhou 310014, China;
- Department of Chemistry, Fudan University, Shanghai 200433, China
- Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Drugs, Shanghai 200433, China
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13
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Sang Y, Pannecouque C, De Clercq E, Zhuang C, Chen F. Pharmacophore-fusing design of pyrimidine sulfonylacetanilides as potent non-nucleoside inhibitors of HIV-1 reverse transcriptase. Bioorg Chem 2020; 96:103595. [PMID: 32006797 DOI: 10.1016/j.bioorg.2020.103595] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2019] [Revised: 01/14/2020] [Accepted: 01/18/2020] [Indexed: 11/28/2022]
Abstract
Twenty-seven derivatives (40-66) were generated by pharmacophore fusing of sulfonylacetanilide-diarylpyrimidine (1) with rilpivirine or biphenyl-diarylpyrimidines. They displayed up to single-digit nanomolar activity against wild-type (WT) virus and various drug-resistant mutant strains in HIV-1-infected MT-4 cells, thereby targeting the reverse transcriptase (RT) enzyme. Compound 51 displayed exceptionally potent activity against WT virus (EC50 = 6 nM) and several mutant strains (L100I, EC50 = 8 nM, K103N, EC50 = 6 nM, Y181C, EC50 = 26 nM, Y188L, EC50 = 122 nM, E138K, EC50 = 26 nM). The structure-activity relationships of the newly obtained pyrimidine sulfonylacetanilides were also elucidated. Molecular docking analysis explained the activity and provided a structural insight for follow-up research.
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Affiliation(s)
- Yali Sang
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai 200433, People's Republic of China; Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Drugs, Shanghai 200433, People's Republic of China
| | | | - Erik De Clercq
- Rega Institute for Medical Research, KU Leuven, Herestraat 49, B-3000 Leuven, Belgium
| | - Chunlin Zhuang
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai 200433, People's Republic of China; Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Drugs, Shanghai 200433, People's Republic of China.
| | - Fener Chen
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai 200433, People's Republic of China; Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Drugs, Shanghai 200433, People's Republic of China; Institute of Pharmaceutical Science and Technology, Zhejiang University of Technology, 18 Chao Wang Road, 310014 Hangzhou, People's Republic of China.
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14
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Han S, Sang Y, Wu Y, Tao Y, Pannecouque C, De Clercq E, Zhuang C, Chen FE. Fragment hopping-based discovery of novel sulfinylacetamide-diarylpyrimidines (DAPYs) as HIV-1 nonnucleoside reverse transcriptase inhibitors. Eur J Med Chem 2019; 185:111874. [PMID: 31735575 DOI: 10.1016/j.ejmech.2019.111874] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 11/08/2019] [Accepted: 11/08/2019] [Indexed: 12/12/2022]
Abstract
The fragment hopping approach is widely applied in drug development. A series of diarylpyrimidines (DAPYs) were obtained by hopping the thioacetamide scaffold to novel human immunodeficiency virus type 1 (HIV-1) nonnucleoside reverse transcriptase inhibitors (NNRTIs) to address the cytotoxicity issue of Etravirine and Rilpivirine. Although the new compounds (11a-l) in the first-round optimization possessed less potent anti-viral activity, they showed much lower cytotoxicity. Further optimization on the sulfur led to the sulfinylacetamide-DAPYs exhibiting improved anti-viral activity and a higher selectivity index especially toward the K103N mutant strain. The most potent compound 12a displayed EC50 values of 0.0249 μM against WT and 0.0104 μM against the K103N mutant strain, low cytotoxicity (CC50 > 221 μM) and a high selectivity index (SI WT > 8873, SI K103N > 21186). In addition, this compound showed a favorable in vitro microsomal stability across species. Computational study predicted the binding models of these potent compounds with HIV-1 reverse transcriptase thus providing further insights for new developments.
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Affiliation(s)
- Sheng Han
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai, 200433, People's Republic of China; Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Drugs, Shanghai, 200433, People's Republic of China
| | - Yali Sang
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai, 200433, People's Republic of China; Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Drugs, Shanghai, 200433, People's Republic of China
| | - Yan Wu
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai, 200433, People's Republic of China; Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Drugs, Shanghai, 200433, People's Republic of China
| | - Yuan Tao
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai, 200433, People's Republic of China; Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Drugs, Shanghai, 200433, People's Republic of China
| | | | - Erik De Clercq
- Rega Institute for Medical Research, KU Leuven, Herestraat 49, B-3000, Leuven, Belgium
| | - Chunlin Zhuang
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai, 200433, People's Republic of China; Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Drugs, Shanghai, 200433, People's Republic of China.
| | - Fen-Er Chen
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai, 200433, People's Republic of China; Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Drugs, Shanghai, 200433, People's Republic of China.
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Iannazzo D, Pistone A, Ferro S, De Luca L, Monforte AM, Romeo R, Buemi MR, Pannecouque C. Graphene Quantum Dots Based Systems As HIV Inhibitors. Bioconjug Chem 2018; 29:3084-3093. [DOI: 10.1021/acs.bioconjchem.8b00448] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Daniela Iannazzo
- Department of Engineering, University of Messina, Contrada Di Dio, I-98166 Messina, Italy
| | - Alessandro Pistone
- Department of Engineering, University of Messina, Contrada Di Dio, I-98166 Messina, Italy
| | - Stefania Ferro
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Annunziata, I-98168 Messina, Italy
| | - Laura De Luca
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Annunziata, I-98168 Messina, Italy
| | - Anna Maria Monforte
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Annunziata, I-98168 Messina, Italy
| | - Roberto Romeo
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Annunziata, I-98168 Messina, Italy
| | - Maria Rosa Buemi
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Annunziata, I-98168 Messina, Italy
| | - Christophe Pannecouque
- Department of Microbiology and Immunology, Laboratory of Virology and Chemotherapy, Rega Institute for Medical Research, KU Leuven, Herestraat 49, B-3000 Leuven, Belgium
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16
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Structural optimization of N1-aryl-benzimidazoles for the discovery of new non-nucleoside reverse transcriptase inhibitors active against wild-type and mutant HIV-1 strains. Bioorg Med Chem 2018; 26:661-674. [DOI: 10.1016/j.bmc.2017.12.033] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 12/20/2017] [Accepted: 12/22/2017] [Indexed: 11/20/2022]
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17
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Galilee M, Alian A. The structure of FIV reverse transcriptase and its implications for non-nucleoside inhibitor resistance. PLoS Pathog 2018; 14:e1006849. [PMID: 29364950 PMCID: PMC5798851 DOI: 10.1371/journal.ppat.1006849] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Revised: 02/05/2018] [Accepted: 01/03/2018] [Indexed: 11/24/2022] Open
Abstract
Reverse transcriptase (RT) is the target for the majority of anti-HIV-1 drugs. As with all anti-AIDS treatments, continued success of RT inhibitors is persistently disrupted by the occurrence of resistance mutations. To explore latent resistance mechanisms potentially accessible to therapeutically challenged HIV-1 viruses, we examined RT from the related feline immunodeficiency virus (FIV). FIV closely parallels HIV-1 in its replication and pathogenicity, however, is resistant to all non-nucleoside inhibitors (NNRTI). The intrinsic resistance of FIV RT is particularly interesting since FIV harbors the Y181 and Y188 sensitivity residues absent in both HIV-2 and SIV. Unlike RT from HIV-2 or SIV, previous efforts have failed to make FIV RT susceptible to NNRTIs concluding that the structure or flexibility of the feline enzyme must be profoundly different. We report the first crystal structure of FIV RT and, being the first structure of an RT from a non-primate lentivirus, enrich the structural and species repertoires available for RT. The structure demonstrates that while the NNRTI binding pocket is conserved, minor subtleties at the entryway can render the FIV RT pocket more restricted and unfavorable for effective NNRTI binding. Measuring NNRTI binding affinity to FIV RT shows that the “closed” pocket configuration inhibits NNRTI binding. Mutating the loop residues rimming the entryway of FIV RT pocket allows for NNRTI binding, however, it does not confer sensitivity to these inhibitors. This reveals a further layer of resistance caused by inherent FIV RT variances that could have enhanced the dissociation of bound inhibitors, or, perhaps, modulated protein plasticity to overcome inhibitory effects of bound NNRTIs. The more “closed” conformation of FIV RT pocket can provide a template for the development of innovative drugs that could unlock the constrained pocket, and the resilient mutant version of the enzyme can offer a fresh model for the study of NNRTI-resistance mechanisms overlooked in HIV-1. The majority of anti-AIDS drugs target the reverse transcriptase (RT) enzyme of the HIV-1 virus. RT catalyzes the central step in the virus replication cycle converting the viral RNA genome into DNA for subsequent integration into the host genome. As with all anti-AIDS treatments, continued success of RT inhibitors is persistently disrupted by the occurrence of resistance mutations. To explore latent resistance mechanisms potentially accessible to therapeutically challenged HIV-1 viruses, we examined RT from the related feline immunodeficiency virus (FIV). FIV closely parallels HIV-1 in its replication and pathogenicity however is resistant to all non-nucleoside inhibitors of HIV-1 RT. We resolved the crystal structure of FIV RT, and using mutational and biochemical analyses, we show that specific differences in the FIV RT structure inhibit the binding of non-nucleoside inhibitors. We further show that mutating the protein to facilitate binding of the inhibitors does not confer sensitivity to these inhibitors, suggesting that other variances inherent in FIV RT modulate a second layer of resistance. These insights can help in the development of novel drugs against evolving HIV-1 RT resistance.
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Affiliation(s)
- Meytal Galilee
- Faculty of Biology, Technion–Israel Institute of Technology, Haifa, Israel
| | - Akram Alian
- Faculty of Biology, Technion–Israel Institute of Technology, Haifa, Israel
- * E-mail:
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18
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Discovery of biphenyl-substituted diarylpyrimidines as non-nucleoside reverse transcriptase inhibitors with high potency against wild-type and mutant HIV-1. Eur J Med Chem 2018; 145:726-734. [PMID: 29353724 DOI: 10.1016/j.ejmech.2018.01.016] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Revised: 12/28/2017] [Accepted: 01/05/2018] [Indexed: 11/22/2022]
Abstract
A novel series of diarylpyrimidine (DAPY) derivatives bearing the biphenyl motif with multiple substituted groups was synthesized as human immunodeficiency virus (HIV)-1 non-nucleoside reverse transcriptase inhibitors. All of the target compounds were evaluated for their in vitro activity against HIV in MT-4 cells. Most of the compounds exhibited excellent activity with low nanomolar EC50 values against wild-type, single and double mutant HIV-1 strains. Compound 4b displayed an EC50 value of 1 nM against HIV-1 IIIB, 1.3 nM against L100I, 0.84 nM against K103 N, 1.5 nM against Y181C, 11 nM against Y188L, 2 nM against E138K, 10 nM against K103 N + Y181C, and almost 110 nM against F227L + V106. The improvement in the selectivity and potency of the target molecules against the wild-type and mutant HIV-1 strains validated our hypothesis. The biphenyl ring in the DAPY derivatives could strengthen the π-π stacking effect between the target molecule and the non-nucleoside inhibitor-binding pocket in the reverse transcriptase by extending the conjugating systems. This research represented a significant step toward the discovery of novel therapeutic DAPYs for treating acquired immunodeficiency syndrome in patients infected with HIV-1.
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19
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Liu Z, Tian Y, Liu J, Huang B, Kang D, De Clercq E, Daelemans D, Pannecouque C, Zhan P, Liu X. Design, synthesis and anti-HIV evaluation of novel diarylpyridine derivatives as potent HIV-1 NNRTIs. Eur J Med Chem 2017; 140:383-391. [DOI: 10.1016/j.ejmech.2017.07.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Revised: 07/06/2017] [Accepted: 07/09/2017] [Indexed: 12/15/2022]
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20
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Searching for novel N 1-substituted benzimidazol-2-ones as non-nucleoside HIV-1 RT inhibitors. Bioorg Med Chem 2017; 25:3861-3870. [PMID: 28559060 DOI: 10.1016/j.bmc.2017.05.040] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Revised: 05/09/2017] [Accepted: 05/17/2017] [Indexed: 11/21/2022]
Abstract
Non-nucleoside reverse transcriptase inhibitors (NNRTIs) represent an integral part of the currently available combination antiretroviral therapy (cART) contributing to reduce the AIDS-mortality and turned the disease from lethal to chronic. In this context we recently reported a series of 6-chloro-1-(3-methylphenylsulfonyl)-1,3-dihydro-2H-benzimidazol-2-ones as potent non-nucleoside HIV-1 reverse transcriptase inhibitors. In this paper, we describe the design and the synthesis of two novel series of benzimidazolone analogues in which the linker moiety between the phenyl ring and the sulfonyl group was modified and new small lipophilic groups on the benzyl sulfonyl pendant were introduced. All the new obtained compounds were evaluated as RT inhibitors and were also tested against RTs containing single amino acid mutations. Finally, molecular docking studies were performed in order to rationalize the observed activity of the most promising compound.
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21
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Xue P, Lu HH, Zhu YY, Ju XL, Pannecouque C, Zheng XJ, Liu GY, Zhang XL, Gu SX. Design and synthesis of hybrids of diarylpyrimidines and diketo acids as HIV-1 inhibitors. Bioorg Med Chem Lett 2017; 27:1640-1643. [PMID: 28314598 DOI: 10.1016/j.bmcl.2017.03.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2017] [Revised: 02/22/2017] [Accepted: 03/06/2017] [Indexed: 10/20/2022]
Abstract
Based on the strategy of molecular hybridization, diketo acid fragment as a classical phamacophore of integrase inhibitors was introduced to reverse transcriptase inhibitors diarylpyrimidines to design a series of diarylpyrimidine-diketo acid hybrids (DAPY-DKAs). The target molecules 10b and 11b showed inhibitory activities against WT HIV-1 with EC50 values of 0.18μM and 0.14μM, respectively. And the results of molecular docking demonstrated the potential binding mode and revealed that the DKA moiety and its ester could both be tolerated in the nonnucleoside binding site (NNBS) of HIV-1 RT.
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Affiliation(s)
- Ping Xue
- Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemical Engineering & Pharmacy, Wuhan Institute of Technology, Wuhan 430205, China
| | - Huan-Huan Lu
- Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemical Engineering & Pharmacy, Wuhan Institute of Technology, Wuhan 430205, China
| | - Yuan-Yuan Zhu
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, China.
| | - Xiu-Lian Ju
- Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemical Engineering & Pharmacy, Wuhan Institute of Technology, Wuhan 430205, China
| | - Christophe Pannecouque
- KU Leuven, Department of Microbiology and Immunology, Laboratory of Virology and Chemotherapy, Rega Institute for Medical Research, B-3000 Leuven, Belgium
| | - Xiao-Jiao Zheng
- Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemical Engineering & Pharmacy, Wuhan Institute of Technology, Wuhan 430205, China
| | - Gen-Yan Liu
- Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemical Engineering & Pharmacy, Wuhan Institute of Technology, Wuhan 430205, China
| | - Xiu-Lan Zhang
- Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemical Engineering & Pharmacy, Wuhan Institute of Technology, Wuhan 430205, China
| | - Shuang-Xi Gu
- Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemical Engineering & Pharmacy, Wuhan Institute of Technology, Wuhan 430205, China.
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22
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Palomba M, Rossi L, Sancineto L, Tramontano E, Corona A, Bagnoli L, Santi C, Pannecouque C, Tabarrini O, Marini F. A new vinyl selenone-based domino approach to spirocyclopropyl oxindoles endowed with anti-HIV RT activity. Org Biomol Chem 2016; 14:2015-24. [PMID: 26754878 DOI: 10.1039/c5ob02451j] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Herein, we disclose a general and flexible access to spirocyclopropyl oxindoles by a domino Michael/intramolecular nucleophilic substitution pathway with variously substituted vinyl selenones and enolizable oxindoles in aqueous sodium hydroxide solution. The spirocyclopropyl oxindole being a privileged scaffold, some of the synthesized compounds were selected for biological evaluation. Compound showed selective anti-HIV-1 activity thanks to its ability to inhibit the reverse transcriptase.
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Affiliation(s)
- M Palomba
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Perugia, Via del Liceo 1, 06123 Perugia, Italy.
| | - L Rossi
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Perugia, Via del Liceo 1, 06123 Perugia, Italy.
| | - L Sancineto
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Perugia, Via del Liceo 1, 06123 Perugia, Italy.
| | - E Tramontano
- Dipartimento di Scienze della Vita e dell'Ambiente, Cittadella Universitaria di Monserrato SS554 - 09042, Monserrato (Cagliari), Italy
| | - A Corona
- Dipartimento di Scienze della Vita e dell'Ambiente, Cittadella Universitaria di Monserrato SS554 - 09042, Monserrato (Cagliari), Italy
| | - L Bagnoli
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Perugia, Via del Liceo 1, 06123 Perugia, Italy.
| | - C Santi
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Perugia, Via del Liceo 1, 06123 Perugia, Italy.
| | - C Pannecouque
- KU Leuven, Department of Microbiology and Immunology, Laboratory of Virology and Chemotherapy, Rega Institute for Medical Research, B-3000 Leuven, Belgium
| | - O Tabarrini
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Perugia, Via del Liceo 1, 06123 Perugia, Italy.
| | - F Marini
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Perugia, Via del Liceo 1, 06123 Perugia, Italy.
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23
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Geisman AN, Valuev-Elliston VT, Ozerov AA, Khandazhinskaya AL, Chizhov AO, Kochetkov SN, Pannecouque C, Naesens L, Seley-Radtke KL, Novikov MS. 1,6-Bis[(benzyloxy)methyl]uracil derivatives-Novel antivirals with activity against HIV-1 and influenza H1N1 virus. Bioorg Med Chem 2016; 24:2476-2485. [PMID: 27112451 DOI: 10.1016/j.bmc.2016.04.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2016] [Revised: 03/28/2016] [Accepted: 04/04/2016] [Indexed: 12/11/2022]
Abstract
A series of 1,6-bis[(benzyloxy)methyl]uracil derivatives combining structural features of both diphenyl ether and pyridone types of NNRTIs were synthesized. Target compounds were found to inhibit HIV-1 reverse transcriptase at micro- and submicromolar levels of concentrations and exhibited anti-HIV-1 activity in MT-4 cell culture, demonstrating resistance profile similar to first generation NNRTIs. The synthesized compounds also showed profound activity against influenza virus (H1N1) in MDCK cell culture without detectable cytotoxicity. The lead compound of this assay appeared to exceed rimantadine, amantadine, ribavirin and oseltamivir carboxylate in activity. The mechanism of action of 1,6-bis[(benzyloxy)methyl]uracils against influenza virus is currently under investigation.
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Affiliation(s)
- Alexander N Geisman
- Department of Pharmaceutical & Toxicological Chemistry, Volgograd State Medical University, Pavshikh Bortsov Sq., 1, Volgograd 400131, Russia
| | - Vladimir T Valuev-Elliston
- Engelhardt Institute of Molecular Biology, Russian Academy of Science, Vavilov Str., 32, Moscow 119991, Russia
| | - Alexander A Ozerov
- Department of Pharmaceutical & Toxicological Chemistry, Volgograd State Medical University, Pavshikh Bortsov Sq., 1, Volgograd 400131, Russia
| | - Anastasia L Khandazhinskaya
- Engelhardt Institute of Molecular Biology, Russian Academy of Science, Vavilov Str., 32, Moscow 119991, Russia
| | - Alexander O Chizhov
- Zelinsky Institute of Organic Chemistry, Russian Academy of Science, Leninsky pr., 47, Moscow 119991, Russia
| | - Sergey N Kochetkov
- Engelhardt Institute of Molecular Biology, Russian Academy of Science, Vavilov Str., 32, Moscow 119991, Russia
| | - Christophe Pannecouque
- KU Leuven, Department of Microbiology and Immunology, Laboratory of Virology and Chemotherapy, Rega Institute for Medical Research, Minderbroedersstraat 10, B-3000 Leuven, Belgium
| | - Lieve Naesens
- KU Leuven, Department of Microbiology and Immunology, Laboratory of Virology and Chemotherapy, Rega Institute for Medical Research, Minderbroedersstraat 10, B-3000 Leuven, Belgium
| | - Katherine L Seley-Radtke
- Department of Chemistry & Biochemistry, University of Maryland, Baltimore County, 1000 Hilltop Circle, Baltimore, MD 21250, USA.
| | - Mikhail S Novikov
- Department of Pharmaceutical & Toxicological Chemistry, Volgograd State Medical University, Pavshikh Bortsov Sq., 1, Volgograd 400131, Russia
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24
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Efficacy of Antiviral Drugs against Feline Immunodeficiency Virus. Vet Sci 2015; 2:456-476. [PMID: 29061953 PMCID: PMC5644647 DOI: 10.3390/vetsci2040456] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2015] [Revised: 10/05/2015] [Accepted: 10/21/2015] [Indexed: 11/29/2022] Open
Abstract
Feline immunodeficiency virus (FIV) is one of the most common infectious agents affecting cats worldwide .FIV and human immunodeficiency virus (HIV) share many properties: both are lifelong persistent lentiviruses that are similar genetically and morphologically and both viruses propagate in T-lymphocytes, macrophages, and neural cells. Experimentally infected cats have measurable immune suppression, which sometimes progresses to an acquired immunodeficiency syndrome. A transient initial state of infection is followed by a long latent stage with low virus replication and absence of clinical signs. In the terminal stage, both viruses can cause severe immunosuppression. Thus, FIV infection in cats has become an important natural model for studying HIV infection in humans, especially for evaluation of antiviral compounds. Of particular importance for chemotherapeutic studies is the close similarity between the reverse transcriptase (RT) of FIV and HIV, which results in high in vitro susceptibility of FIV to many RT-targeted antiviral compounds used in the treatment of HIV-infected patients. Thus, the aim of this article is to provide an up-to-date review of studies on antiviral treatment of FIV, focusing on commercially available compounds for human or animal use.
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25
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A novel family of diarylpyrimidines (DAPYs) featuring a diatomic linker: Design, synthesis and anti-HIV activities. Bioorg Med Chem 2015; 23:6587-93. [DOI: 10.1016/j.bmc.2015.09.020] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Revised: 09/09/2015] [Accepted: 09/11/2015] [Indexed: 11/22/2022]
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26
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Wan ZY, Yao J, Mao TQ, Wang XL, Wang HF, Chen WX, Yin H, Chen FE, De Clercq E, Daelemans D, Pannecouque C. Pyrimidine sulfonylacetanilides with improved potency against key mutant viruses of HIV-1 by specific targeting of a highly conserved residue. Eur J Med Chem 2015; 102:215-22. [DOI: 10.1016/j.ejmech.2015.08.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2015] [Revised: 07/21/2015] [Accepted: 08/02/2015] [Indexed: 10/23/2022]
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27
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Anti-HIV diarylpyrimidine–quinolone hybrids and their mode of action. Bioorg Med Chem 2015; 23:3860-8. [DOI: 10.1016/j.bmc.2015.03.037] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Revised: 03/12/2015] [Accepted: 03/13/2015] [Indexed: 11/17/2022]
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28
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Wan ZY, Tao Y, Wang YF, Mao TQ, Yin H, Chen FE, Piao HR, De Clercq E, Daelemans D, Pannecouque C. Hybrid chemistry. Part 4: Discovery of etravirine-VRX-480773 hybrids as potent HIV-1 non-nucleoside reverse transcriptase inhibitors. Bioorg Med Chem 2015; 23:4248-4255. [PMID: 26162497 DOI: 10.1016/j.bmc.2015.06.048] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Revised: 06/16/2015] [Accepted: 06/17/2015] [Indexed: 12/11/2022]
Abstract
A novel series of etravirine-VRX-480773 hybrids were designed using structure-guided molecular hybridization strategy and fusing the pharmacophore templates of etravirine and VRX-480773. The anti-HIV-1 activity and cytotoxicity was evaluated in MT-4 cell cultures. The most active hybrid compound in this series, N-(2-chlorophenyl)-2-((4-(4-cyano-2,6-dimethylphenoxy)pyrimidin-2-yl)thio)acetamide 3d (EC50=0.24 , SI>1225), was more potent than delavirdine (EC50=0.66 μM, SI>67) in the anti-HIV-1 in vitro cellular assay. Studies of structure-activity relationships established a correlation between anti-HIV activity and the substitution pattern of the acetanilide group.
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Affiliation(s)
- Zheng-Yong Wan
- Department of Chemistry, Fudan University, Shanghai 200433, People's Republic of China
| | - Yuan Tao
- Department of Chemistry, Fudan University, Shanghai 200433, People's Republic of China
| | - Ya-Feng Wang
- Department of Chemistry, Fudan University, Shanghai 200433, People's Republic of China
| | - Tian-Qi Mao
- Department of Chemistry, Fudan University, Shanghai 200433, People's Republic of China; Institute of Biomedical Science, Fudan University, Shanghai 200433, People's Republic of China
| | - Hong Yin
- Department of Chemistry, Fudan University, Shanghai 200433, People's Republic of China
| | - Fen-Er Chen
- Department of Chemistry, Fudan University, Shanghai 200433, People's Republic of China; Institute of Biomedical Science, Fudan University, Shanghai 200433, People's Republic of China.
| | - Hu-Ri Piao
- Key Laboratory of Natural Resources and Functional Molecules of the Changbai Mountain, Affiliated Ministry of Education, Yanbian University, Yanji 133000, People's Republic of China.
| | - Erik De Clercq
- Rega Institute for Medical Research, Katholieke Universiteit Leuven, 10 Minderbroedersstraat, B-3000 Leuven, Belgium
| | - Dirk Daelemans
- Rega Institute for Medical Research, Katholieke Universiteit Leuven, 10 Minderbroedersstraat, B-3000 Leuven, Belgium
| | - Christophe Pannecouque
- Rega Institute for Medical Research, Katholieke Universiteit Leuven, 10 Minderbroedersstraat, B-3000 Leuven, Belgium
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29
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Discovery of piperidin-4-yl-aminopyrimidine derivatives as potent non-nucleoside HIV-1 reverse transcriptase inhibitors. Eur J Med Chem 2015; 97:1-9. [DOI: 10.1016/j.ejmech.2015.04.050] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Revised: 04/23/2015] [Accepted: 04/24/2015] [Indexed: 11/18/2022]
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30
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Babkov DA, Valuev-Elliston VT, Paramonova MP, Ozerov AA, Ivanov AV, Chizhov AO, Khandazhinskaya AL, Kochetkov SN, Balzarini J, Daelemans D, Pannecouque C, Seley-Radtke KL, Novikov MS. Scaffold hopping: Exploration of acetanilide-containing uracil analogues as potential NNRTIs. Bioorg Med Chem 2015; 23:1069-81. [DOI: 10.1016/j.bmc.2015.01.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Revised: 12/26/2014] [Accepted: 01/04/2015] [Indexed: 10/24/2022]
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31
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Wu HQ, Yao J, He QQ, Chen WX, Chen FE, Pannecouque C, De Clercq E, Daelemans D. Synthesis and biological evaluation of DAPY–DPEs hybrids as non-nucleoside inhibitors of HIV-1 reverse transcriptase. Bioorg Med Chem 2015; 23:624-31. [DOI: 10.1016/j.bmc.2014.11.032] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Revised: 11/21/2014] [Accepted: 11/23/2014] [Indexed: 10/24/2022]
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32
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Sancineto L, Iraci N, Barreca ML, Massari S, Manfroni G, Corazza G, Cecchetti V, Marcello A, Daelemans D, Pannecouque C, Tabarrini O. Exploiting the anti-HIV 6-desfluoroquinolones to design multiple ligands. Bioorg Med Chem 2014; 22:4658-66. [PMID: 25127466 DOI: 10.1016/j.bmc.2014.07.018] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Revised: 07/10/2014] [Accepted: 07/14/2014] [Indexed: 10/25/2022]
Abstract
It is getting clearer that many drugs effective in different therapeutic areas act on multiple rather than single targets. The application of polypharmacology concepts might have numerous advantages especially for disease such as HIV/AIDS, where the rapid emergence of resistance requires a complex combination of more than one drug. In this paper, we have designed three hybrid molecules combining WM5, a quinolone derivative we previously identified as HIV Tat-mediated transcription (TMT) inhibitor, with the tricyclic core of nevirapine and BILR 355BS (BILR) non-nucleoside reverse transcriptase inhibitors (NNRTIs) to investigate whether it could be possible to obtain molecules acting on both transcription steps of the HIV replicative cycle. One among the three designed multiple ligands, reached this goal. Indeed, compound 1 inhibited both TMT and reverse transcriptase (RT) activity. Unexpectedly, while the anti-TMT activity exerted by compound 1 resulted into a selective inhibition of HIV-1 reactivation from latently infected OM10.1 cells, the anti-RT properties shown by all of the synthesized compounds did not translate into an anti-HIV activity in acutely infected cells. Thus, we have herein produced the proof of concept that the design of dual TMT-RT inhibitors is indeed possible, but optimization efforts are needed to obtain more potent derivatives.
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Affiliation(s)
- Luca Sancineto
- Department of Pharmaceutical Sciences, University of Perugia, Via del Liceo 1, 06123 Perugia, Italy
| | - Nunzio Iraci
- Department of Pharmaceutical Sciences, University of Perugia, Via del Liceo 1, 06123 Perugia, Italy
| | - Maria Letizia Barreca
- Department of Pharmaceutical Sciences, University of Perugia, Via del Liceo 1, 06123 Perugia, Italy
| | - Serena Massari
- Department of Pharmaceutical Sciences, University of Perugia, Via del Liceo 1, 06123 Perugia, Italy
| | - Giuseppe Manfroni
- Department of Pharmaceutical Sciences, University of Perugia, Via del Liceo 1, 06123 Perugia, Italy
| | - Gianmarco Corazza
- Laboratory of Molecular Virology, International Centre for Genetic Engineering and Biotechnology (ICGEB), Padriciano 99, 34149 Trieste, Italy
| | - Violetta Cecchetti
- Department of Pharmaceutical Sciences, University of Perugia, Via del Liceo 1, 06123 Perugia, Italy
| | - Alessandro Marcello
- Laboratory of Molecular Virology, International Centre for Genetic Engineering and Biotechnology (ICGEB), Padriciano 99, 34149 Trieste, Italy
| | - Dirk Daelemans
- Rega Institute for Medical Research, Katholieke Universiteit Leuven, B-3000 Leuven, Belgium
| | - Christophe Pannecouque
- Rega Institute for Medical Research, Katholieke Universiteit Leuven, B-3000 Leuven, Belgium
| | - Oriana Tabarrini
- Department of Pharmaceutical Sciences, University of Perugia, Via del Liceo 1, 06123 Perugia, Italy.
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Meng G, Liu Y, Zheng A, Chen F, Chen W, De Clercq E, Pannecouque C, Balzarini J. Design and synthesis of a new series of modified CH-diarylpyrimidines as drug-resistant HIV non-nucleoside reverse transcriptase inhibitors. Eur J Med Chem 2014; 82:600-11. [DOI: 10.1016/j.ejmech.2014.05.059] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Revised: 05/11/2014] [Accepted: 05/25/2014] [Indexed: 11/25/2022]
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Yan ZH, Huang XY, Wu HQ, Chen WX, He QQ, Chen FE, De Clercq E, Pannecouque C. Structural modifications of CH(OH)-DAPYs as new HIV-1 non-nucleoside reverse transcriptase inhibitors. Bioorg Med Chem 2014; 22:2535-41. [DOI: 10.1016/j.bmc.2014.02.030] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2013] [Revised: 02/18/2014] [Accepted: 02/22/2014] [Indexed: 02/08/2023]
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35
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Monforte AM, Ferro S, De Luca L, Lo Surdo G, Morreale F, Pannecouque C, Balzarini J, Chimirri A. Design and synthesis of N1-aryl-benzimidazoles 2-substituted as novel HIV-1 non-nucleoside reverse transcriptase inhibitors. Bioorg Med Chem 2014; 22:1459-67. [DOI: 10.1016/j.bmc.2013.12.045] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2013] [Revised: 12/11/2013] [Accepted: 12/17/2013] [Indexed: 11/17/2022]
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Towards new C6-rigid S-DABO HIV-1 reverse transcriptase inhibitors: synthesis, biological investigation and molecular modeling studies. Bioorg Med Chem 2013; 21:6477-83. [PMID: 24055077 DOI: 10.1016/j.bmc.2013.08.040] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Revised: 08/19/2013] [Accepted: 08/21/2013] [Indexed: 11/21/2022]
Abstract
A series of C6-rigid S-DABO analogs characterized by a substituted benzoyl group at C6 position of the pyrimidine ring has been synthesized and biological evaluation as NNRTIs against wild-type HIV-1 strain IIIB, double RT mutant (K103N+Y181C) strain RES056 as well as HIV-2 strain ROD in MT-4 cell cultures. Most of the compounds exhibited moderate antiviral activities. Among them, compound 7q displayed the highest anti-HIV-1 activity with an EC50 value of 0.26μM and a selectivity index (SI) of 541. The preliminary structure-activity relationship (SAR) of these new S-DABOs was investigated, the target RT was confirmed and docking study was performed.
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Yang S, Pannecouque C, Daelemans D, Ma XD, Liu Y, Chen FE, De Clercq E. Molecular design, synthesis and biological evaluation of BP-O-DAPY and O-DAPY derivatives as non-nucleoside HIV-1 reverse transcriptase inhibitors. Eur J Med Chem 2013; 65:134-43. [DOI: 10.1016/j.ejmech.2013.04.052] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2012] [Revised: 04/24/2013] [Accepted: 04/26/2013] [Indexed: 12/11/2022]
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Tatar E, Küçükgüzel İ, Daelemans D, Talele TT, Kaushik-Basu N, De Clercq E, Pannecouque C. Some Hydrazones of 2-Aroylamino-3-methylbutanohydrazide: Synthesis, Molecular Modeling Studies, and Identification as Stereoselective Inhibitors of HIV-1. Arch Pharm (Weinheim) 2012; 346:140-53. [DOI: 10.1002/ardp.201200311] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2012] [Revised: 10/10/2012] [Accepted: 10/17/2012] [Indexed: 11/11/2022]
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Kenyon JC, Lever AML. The molecular biology of feline immunodeficiency virus (FIV). Viruses 2011; 3:2192-213. [PMID: 22163340 PMCID: PMC3230847 DOI: 10.3390/v3112192] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2011] [Revised: 10/31/2011] [Accepted: 10/31/2011] [Indexed: 11/29/2022] Open
Abstract
Feline immunodeficiency virus (FIV) is widespread in feline populations and causes an AIDS-like illness in domestic cats. It is highly prevalent in several endangered feline species. In domestic cats FIV infection is a valuable small animal model for HIV infection. In recent years there has been sa significant increase in interest in FIV, in part to exploit this, but also because of the potential it has as a human gene therapy vector. Though much less studied than HIV there are many parallels in the replication of the two viruses, but also important differences and, despite their likely common origin, the viruses have in some cases used alternative strategies to overcome similar problems. Recent advances in understanding the structure and function of FIV RNA and proteins and their interactions has enhanced our knowledge of FIV replication significantly, however, there are still many gaps. This review summarizes our current knowledge of FIV molecular biology and its similarities with, and differences from, other lentiviruses.
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Affiliation(s)
- Julia C Kenyon
- Department of Medicine, University of Cambridge, Cambridge, CB2 0QQ, UK.
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Bonache MC, Cordeiro A, Quesada E, Vanstreels E, Daelemans D, Camarasa MJ, Balzarini J, San-Félix A. Selective inhibition of Human Immunodeficiency Virus type 1 (HIV-1) by a novel family of tricyclic nucleosides. Antiviral Res 2011; 92:37-44. [PMID: 21600933 DOI: 10.1016/j.antiviral.2011.05.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2011] [Revised: 04/27/2011] [Accepted: 05/05/2011] [Indexed: 10/18/2022]
Abstract
Nucleoside 1, with an unusual tricyclic carbohydrate moiety, specifically inhibits HIV-1 replication while being inactive against HIV-2 or other (retro) viruses. In an attempt to increase the inhibitory efficacy against HIV-1, and to further explore the structural features required for anti-HIV-1 activity, different types of modifications have been carried out on this prototype compound. These include substitution of the ethoxy group at the C-4″ position by alkoxy groups of different length, branching, conformational freedom or functionalization. In addition, the 4″-ethoxy group has been removed or substituted by other functional groups. The role of the tert-butyldimethylsilyl (TBDMS) group at the 2' position has also been studied by preparing the corresponding 2'-deprotected derivative or by replacing it by other silyl (tert-hexyldimethylsilyl) or acyl (acetyl) moieties. Finally, the thymine of the prototype compound has been replaced by N-3-methylthymine, uracil or thiophenyl. Some of these compounds were endowed with a 6- to 7-fold higher selectivity than the prototype 1. The tricyclic nucleosides here described represent a novel type of selective anti HIV-1 inhibitors, targeted at the HIV-1-encoded reverse transcriptase.
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Affiliation(s)
- María-Cruz Bonache
- Instituto de Química Médica (CSIC), Juan de la Cierva 3, 28006 Madrid, Spain
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Hizi A, Herschhorn A. Retroviral reverse transcriptases (other than those of HIV-1 and murine leukemia virus): a comparison of their molecular and biochemical properties. Virus Res 2008; 134:203-20. [PMID: 18291546 DOI: 10.1016/j.virusres.2007.12.008] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2007] [Revised: 12/16/2007] [Accepted: 12/17/2007] [Indexed: 10/22/2022]
Abstract
This chapter reviews most of the biochemical data on reverse transcriptases (RTs) of retroviruses, other than those of HIV-1 and murine leukemia virus (MLV) that are covered in detail in other reviews of this special edition devoted to reverse transcriptases. The various RTs mentioned are grouped according to their retroviral origins and include the RTs of the alpharetroviruses, lentiviruses (both primate, other than HIV-1, and non-primate lentiviruses), betaretroviruses, deltaretroviruses and spumaretroviruses. For each RT group, the processing, molecular organization as well as the enzymatic activities and biochemical properties are described. Several RTs function as dimers, primarily as heterodimers, while the others are active as monomeric proteins. The comparisons between the diverse properties of the various RTs show the common traits that characterize the RTs from all retroviral subfamilies. In addition, the unique features of the specific RTs groups are also discussed.
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Affiliation(s)
- Amnon Hizi
- Department of Cell and Developmental Biology, Sackler School of Medicine, Tel Aviv University, Tel Aviv 69978, Israel.
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D'Cruz OJ, Uckun FM. Preclinical evaluation of a dual-acting microbicidal prodrug WHI-07 in combination with vanadocene dithiocarbamate in the female reproductive tract of rabbit, pig, and cat. Toxicol Pathol 2008; 35:910-27. [PMID: 18098038 DOI: 10.1080/01926230701748115] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The mucosal safety of the combination antiretroviral spermicide,WHI-07 [5-bromo-6-methoxy-5,6-dihydro-3'-azidothymidine-5'-(p-bromophenyl)-methoxy alaninyl phosphate] and vanadocene dithiocarbamate (VDDTC), was evaluated in 3 different animal models. Twenty-seven NZW rabbits in four subgroups were exposed intravaginally to a gel-microemulsion (GM) with and without three dose levels of WHI-07 plus VDDTC (0.5+0.06%, 1.0+0.12% and 2.0+0.25%) or 4% nonoxynol-9 (N-9; Conceptrol) for 14 consecutive days. Ten nonestrus gilts (Duroc) in three subgroups received either a single or daily intravaginal application of GM with and without 2.0% WHI-07 plus 0.25% VDDTC or 2.0% benzalkonium chloride (BZK)-containing gel for 6 and 4 consecutive days, respectively. Five cats received a single intravaginal application of GM incorporating 2.0% WHI-07 plus 0.25% VDDTC. Genital tract histopathology was performed in the pig and rabbit at the end of dosing period but after 18 weeks post-dosing in the cat. Porcine cervicovaginal lavage (CVL) fluid was obtained for up to 72 hours after a single exposure and changes in the levels of inflammatory cytokines (IL-1beta, IL-8, IFN-gamma, and TNF-alpha) were quantitated by a multiplexed chemiluminescence-based immunoassay. Rabbit vaginal tissues were evaluated for localized cellular inflammation and in situ apoptosis by immunohistochemical staining for CD45, nuclear factor (NF)-kappa B, and terminal deoxynucleotidyl transferase-mediated FITC-deoxyuridine triphosphate nick-end labeling (TUNEL) using confocal laser scanning microscopy (CLSM), respectively. Vanadium content in selected organs and body fluids from rabbits and pigs was determined by atomic absorption spectroscopy. When compared with 4% N-9 (total irritation score 13-14 out of a possible 16), none of the rabbits given WHI-07 plus VDDTC intravaginally, developed histological alterations such as epithelial erosion, edema, leukocyte influx or vascular congestion characteristic of inflammation (total irritation score 4-6). CD45 and NF-kappa B immunoreactivity was limited to cells within the vascular lumen of both control and WHI-07 plus VDDTC-treated vaginal tissues. TUNEL assay revealed lack of increased apoptotic cells in vaginal mucosa exposed to increasing concentrations of WHI-07 plus VDDTC. Basal levels of proinflammatory cytokines (IL-1beta, IL-8, IFN-gamma and TNF-alpha) in porcine CVL were unaffected by intravaginal exposure to WHI-07 plus VDDTC when compared with BZK used as a positive control. Endpoint histology of the reproductive tract from cats and pigs after a single or repeated intravaginal exposure to WHI-07 plus VDDTC, respectively, revealed lack of irritation/inflammation in the epithelium, subepithelium/lamina propria, vessels/perivascular tissues, and underlying/surrounding muscles. Vanadium was not preferentially incorporated into rabbit or porcine tissues and body fluids at levels above 1 microg/g. Based on comparative histologic data and surrogate markers for inflammation, repeated intravaginal administration of WHI-07 plus VDDTC via a gel-microemulsion did not result in vaginal irritation, mucosal toxicity, or systemic absorption of vanadium. Therefore, the combined use of WHI-07 and VDDTC via gel-microemulsion appears safe for topical use as a prophylactic anti-HIV microbicide.
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Affiliation(s)
- Osmond J D'Cruz
- Drug Discovery Program, Paradigm Pharmaceuticals, LLC, St. Paul, MN 55113, USA.
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D'Cruz OJ, Uckun FM. Limitations of the Human-PBL-SCID Mouse Model for Vaginal Transmission of HIV-1. Am J Reprod Immunol 2007; 57:353-60. [PMID: 17430499 DOI: 10.1111/j.1600-0897.2007.00478.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
PROBLEM SCID mice reconstituted with human peripheral blood lymphocytes (PBL) are amenable to vaginal transmission of HIV-1. We investigated the effectiveness of this model to establish systemic HIV-1 infection. METHOD OF STUDY Eighty progesterone-primed C.B-17 SCID mice were reconstituted with human-PBLs and intravaginally inoculated with CCR5 HIV-1 (BaL or 92BR09) infected human-PBLs in the presence of human semen. After two weeks, viral RNA load in spleen, peritoneal lavage (PL), and serum was quantitated by the nucleic acid sequence-based amplification method. RESULTS In five independent experiments, spleen from 8/60 (13.3%), PL from 7/60 (11.6%), and serum from 16/56 (28.5%) mice were positive for BaL HIV-1 infection. Similarly, spleen from 4/20 (20%), PL from 1/20 (5%) and serum from 5/20 (25%) mice vaginally inoculated with 92BR09-infected human-PBLs were positive for HIV-1. A one-sided power analysis using normal approximation revealed that at 5% significance level, the overall response rate need to increase form 0.29 to 0.9 and 80% of the control groups needs to achieve a response rate between 6/10 and 9/10 to make the assay feasible. CONCLUSION The incidence of vaginal transmission of CCR5 HIV-1 in the human-PBL-SCID mouse was low and variable, which constitutes a major disadvantage for preclinical evaluation of vaginal microbicides.
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FIV as a Model for HIV: An Overview. IN VIVO MODELS OF HIV DISEASE AND CONTROL 2007. [PMCID: PMC7121254 DOI: 10.1007/0-387-25741-1_7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Animal models for human immunodeficiency virus (HIV) infection play a key role in understanding the pathogenesis of AIDS and the development of therapeutic agents and vaccines. As the only lentivirus that causes an immunodeficiency resembling that of HIV infection, in its natural host, feline immunodeficiency virus (FIV) has been a unique and powerful model for AIDS research. FIV was first described in 1987 by Niels Pedersen and co-workers as the causative agent for a fatal immunodeficiency syndrome observed in cats housed in a cattery in Petaluma, California. Since this landmark observation, multiple studies have shown that natural and experimental infection of cats with biological isolates of FIV produces an AIDS syndrome very similar in pathogenesis to that observed for human AIDS. FIV infection induces an acute viremia associated with Tcell alterations including depressed CD4 :CD8 T-cell ratios and CD4 T-cell depletion, peripheral lymphadenopathy, and neutropenia. In later stages of FIV infection, the host suffers from chronic persistent infections that are typically self-limiting in an immunocompetent host, as well as opportunistic infections, chronic diarrhea and wasting, blood dyscracias, significant CD4 T-cell depletion, neurologic disorders, and B-cell lymphomas. Importantly, chronic FIV infection induces a progressive lymphoid and CD4 T-cell depletion in the infected cat. The primary mode of natural FIV transmission appears to be blood-borne facilitated by fighting and biting. However, experimental infection through transmucosal routes (rectal and vaginal mucosa and perinatal) have been well documented for specific FIV isolates. Accordingly, FIV disease pathogenesis exhibits striking similarities to that described for HIV-1 infection.
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Pereira CF, Rutten K, Stránská R, Huigen MCDG, Aerts PC, de Groot RJ, Egberink HF, Schuurman R, Nottet HSLM. Spectrum of antiviral activity of o-(acetoxyphenyl)hept-2-ynyl sulphide (APHS). Int J Antimicrob Agents 2005; 25:419-26. [PMID: 15848298 DOI: 10.1016/j.ijantimicag.2004.11.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2004] [Accepted: 11/30/2004] [Indexed: 11/21/2022]
Abstract
Since some antiviral drugs have a broad spectrum of action, the aim of this study was to assess whether o-(acetoxyphenyl)hept-2-ynyl sulphide (APHS), a recently described inhibitor of human immunodeficiency virus type 1 (HIV-1) replication, has an effect on the replication of other retroviruses, (-) and (+) RNA viruses and DNA viruses. APHS did not affect the replication of feline immunodeficiency virus, HIV-2 and a HIV-1 strain resistant to non-nucleoside reverse transcriptase inhibitors (NNRTI). APHS could also not inhibit the replication of the RNA viruses, respiratory syncytium virus or mouse hepatitis virus. In contrast, APHS did inhibit the replication of wild-type herpes simplex virus type 1 (HSV-1) as well as acyclovir-resistant HSV-1 and HSV-2 mutant. These results suggest that APHS is a NNRTI of HIV-1 replication, but not HIV-2 replication, and that APHS is an inhibitor of both HSV-1 and HSV-2 replication.
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Affiliation(s)
- Cândida F Pereira
- Eijkman-Winkler Center, Hp G04.614, University Medical Center Utrecht, Heidelberglaan 100, NL-3584 CX Utrecht, The Netherlands
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Balzarini J, Auwerx J, Rodríguez-Barrios F, Chedad A, Farkas V, Ceccherini-Silberstein F, García-Aparicio C, Velázquez S, De Clercq E, Perno CF, Camarasa MJ, Gago F. The amino acid Asn136 in HIV-1 reverse transcriptase (RT) maintains efficient association of both RT subunits and enables the rational design of novel RT inhibitors. Mol Pharmacol 2005; 68:49-60. [PMID: 15833734 DOI: 10.1124/mol.105.012435] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The highly conserved Asn136 is in close proximity to the nonnucleoside reverse transcriptase (RT) inhibitor (NNRTI)-specific lipophilic pocket of human immunodeficiency virus type 1 (HIV-1) RT. Site-directed mutagenesis has revealed that the catalytic activity of HIV-1 RT mutated at position Asn136 is heavily compromised. Only 0.07 to 2.1% of wild-type activity is retained, depending on the nature of the amino acid change at position 136. The detrimental effect of the mutations at position 136 occurred when the mutated amino acid was present in the p51 subunit but not in the p66 subunit of the p51/p66 RT heterodimer. All mutant enzymes could be inhibited by second-generation NNRTIs such as efavirenz. They were also markedly more sensitive to the inactivating (denaturating) effect of urea than wild-type RT, and the degree of increased urea sensitivity was highly correlated with the degree of (lower) catalytic activity of the mutant enzymes. Replacing wild-type Asn136 in HIV-1 RT with other amino acids resulted in notably increased amounts of free p51 and p66 monomers. Our findings identify a structural/functional role for Asn136 in stabilization of the RT p66/p51 dimer and provide hints for the rational design of novel NNRTIs or drugs targeting either Asn136 in the beta7-beta8 loop of p51 or its anchoring point on p66 (the peptide backbone of His96) so as to interfere with the RT dimerization process and/or with the structural support that the p51 subunit provides to the p66 subunit and which is essential for the catalytic enzyme activity.
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Affiliation(s)
- Jan Balzarini
- Rega Institute for Medical Research, Katholieke Universiteit Leuven, Leuven, Belgium.
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Auwerx J, Esnouf R, De Clercq E, Balzarini J. Susceptibility of feline immunodeficiency virus/human immunodeficiency virus type 1 reverse transcriptase chimeras to non-nucleoside RT inhibitors. Mol Pharmacol 2004; 65:244-51. [PMID: 14722257 DOI: 10.1124/mol.65.1.244] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
To map the determinants of the lack of susceptibility of feline immunodeficiency virus (FIV) reverse transcriptase (RT) to anti human immunodeficiency virus type 1 (HIV-1) non-nucleoside RT inhibitors (NNRTIs), a variety of chimeric HIV-1/FIV RTs were constructed. The majority of chimeric RTs had an affinity (Km) for their natural substrates comparable with that of the wild-type HIV-1 and FIV RTs, but their catalytic efficacy was decreased. Whereas HIV-1 RT could be made entirely insensitive to NNRTIs by exchanging the amino acid sequence 97 through 205 of FIV RT, none of the reverse FIV/HIV-1 RT chimeras gained susceptibility to NNRTIs. The amino acids that are thought to be involved in NNRTI susceptibility and that are different from those in HIV-1 RT have also been introduced in FIV RT. These mutant RTs gained virtually no susceptibility to efavirenz or capravirine. Vice versa, when these HIV-1-specific amino acids were replaced by their FIV RT counterparts in HIV-1 RT, susceptibility to the NNRTIs was lost. Thus, replacing segments or substituting relevant amino acids in FIV RT by their HIV-1 RT counterparts did not suffice to make FIV RT sensitive toward NNRTIs and was often accompanied by a decrease or even total loss of polymerase activity. It is postulated that, in contrast to the results found for HIV-1/HIV-2 RT chimeras and supported by the crystal structure of HIV-2 RT, there exist significant differences in the structure and/or flexibility of FIV RTs that may prevent NNRTIs from interacting with the FIV RT.
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Affiliation(s)
- Joeri Auwerx
- Rega Institute for Medical Research, Katholieke Universiteit Leuven, Leuven, Belgium
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Shen L, Shen J, Luo X, Cheng F, Xu Y, Chen K, Arnold E, Ding J, Jiang H. Steered molecular dynamics simulation on the binding of NNRTI to HIV-1 RT. Biophys J 2003; 84:3547-63. [PMID: 12770866 PMCID: PMC1302942 DOI: 10.1016/s0006-3495(03)75088-7] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
HIV-1 reverse transcriptase (RT) is the primary target for anti-AIDS chemotherapy. Nonnucleoside RT inhibitors (NNRTIs) are very potent and most promising anti-AIDS drugs that specifically inhibit HIV-1 RT. The binding and unbinding processes of alpha-APA, an NNRTI, have been studied using nanosecond conventional molecular dynamics and steered molecular dynamics simulations. The simulation results show that the unbinding process of alpha-APA consists of three phases based on the position of alpha-APA in relation to the entrance of the binding pocket. When alpha-APA is bound in the binding pocket, the hydrophobic interactions between HIV-1 RT and alpha-APA dominate the binding; however, the hydrophilic interactions (both direct and water-bridged hydrogen bonds) also contribute to the stabilizing forces. Whereas Tyr-181 makes significant hydrophobic interactions with alpha-APA, Tyr-188 forms a strong hydrogen bond with the acylamino group (N14) of alpha-APA. These two residues have very flexible side chains and appear to act as two "flexible clamps" discouraging alpha-APA to dissociate from the binding pocket. At the pocket entrance, two relatively inflexible residues, Val-179 and Leu-100, gauge the openness of the entrance and form the bottleneck of the inhibitor-unbinding pathway. Two special water molecules at the pocket entrance appear to play important roles in inhibitor recognition of binding and unbinding. These water molecules form water bridges between the polar groups of the inhibitor and the residues around the entrance, and between the polar groups of the inhibitor themselves. The water-bridged interactions not only induce the inhibitor to adopt an energetically favorable conformation so the inhibitor can pass through the pocket entrance, but also stabilize the binding of the inhibitor in the pocket to prevent the inhibitor's dissociation. The complementary steered molecular dynamics and conventional molecular dynamics simulation results strongly support the hypothesis that NNRTIs inhibit HIV-1 RT polymerization activity by enlarging the DNA-binding cleft and restricting the flexibility and mobility of the p66 thumb subdomain that are believed to be essential during DNA translocation and polymerization.
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Affiliation(s)
- Lingling Shen
- Center for Drug Discovery and Design, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, PR China
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