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Fernandes LDR, Lopes JR, Bonjorno AF, Prates JLB, Scarim CB, Dos Santos JL. The Application of Prodrugs as a Tool to Enhance the Properties of Nucleoside Reverse Transcriptase Inhibitors. Viruses 2023; 15:2234. [PMID: 38005911 PMCID: PMC10675571 DOI: 10.3390/v15112234] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 10/16/2023] [Accepted: 10/31/2023] [Indexed: 11/26/2023] Open
Abstract
Antiretroviral Therapy (ART) is an effective treatment for human immunodeficiency virus (HIV) which has transformed the highly lethal disease, acquired immunodeficiency syndrome (AIDS), into a chronic and manageable condition. However, better methods need to be developed for enhancing patient access and adherence to therapy and for improving treatment in the long term to reduce adverse effects. From the perspective of drug discovery, one promising strategy is the development of anti-HIV prodrugs. This approach aims to enhance the efficacy and safety of treatment, promoting the development of more appropriate and convenient systems for patients. In this review, we discussed the use of the prodrug approach for HIV antiviral agents and emphasized nucleoside reverse transcriptase inhibitors. We comprehensively described various strategies that are used to enhance factors such as water solubility, bioavailability, pharmacokinetic parameters, permeability across biological membranes, chemical stability, drug delivery to specific sites/organs, and tolerability. These strategies might help researchers conduct better studies in this field. We also reported successful examples from the primary therapeutic classes while discussing the advantages and limitations. In this review, we highlighted the key trends in the application of the prodrug approach for treating HIV/AIDS.
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Affiliation(s)
| | | | | | | | | | - Jean Leandro Dos Santos
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara 14800-903, Brazil; (L.d.R.F.); (J.R.L.); (A.F.B.); (J.L.B.P.); (C.B.S.)
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2
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Synthesis and anti-SARS-CoV-2 evaluation of lipid prodrugs of β-D- N4-hydroxycytidine (NHC) and a 3′-fluoro-substituted analogue of NHC. Bioorg Chem 2023; 135:106527. [PMID: 37031504 PMCID: PMC10076076 DOI: 10.1016/j.bioorg.2023.106527] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 03/12/2023] [Accepted: 04/03/2023] [Indexed: 04/08/2023]
Abstract
β-D-N4-hydroxycytidine (NHC, EIDD-1931) is a nucleoside analogue that exhibits broad spectrum antiviral activity against a variety of RNA viruses. Herein, we report the synthesis of a series of lipid prodrugs of NHC and a novel 3′-fluoro modified NHC analogue, and evaluation of their antiviral activity against five variants of SARS-CoV-2. All lipid prodrugs showed potent antiviral activity against the tested SARS-CoV-2 variants with EC50 values in the range of 0.31–3.51 μM, which were comparable to those of NHC or higher than those of remdesivir and molnupiravir. An increase in the cytostatic activity of the lipid prodrugs was found, but prodrug 2d proved equally selective as molnupinavir. The 3′-F analogue of NHC (6) only displayed minor antiviral activity against the SARS-CoV-2 Omicron variant (EC50 = 29.91 μM), while no activity was found for other variants at the highest concentration tested. The promising antiviral data of the lipid prodrugs of NHC suggest that they deserve further investigation as new anti-SARS-CoV-2 drugs.
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Agrahari V, Anderson SM, Peet MM, Wong AP, Singh ON, Doncel GF, Clark MR. Long-acting HIV Pre-exposure Prophylaxis (PrEP) approaches: Recent advances, emerging technologies and development challenges. Expert Opin Drug Deliv 2022; 19:1365-1380. [PMID: 36252277 PMCID: PMC9639748 DOI: 10.1080/17425247.2022.2135699] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Introduction: Poor or inconsistent adherence to daily oral pre-exposure prophylaxis (PrEP) has emerged as a key barrier to effective HIV prevention. The advent of potent long-acting (LA) antiretrovirals (ARVs) in conjunction with advances in controlled release technologies has enabled LA ARV drug delivery systems (DDS) capable of providing extended dosing intervals and overcome the challenge of suboptimal drug adherence with daily oral dosing. Areas covered: This review discusses the current state of the LA PrEP field, recent advances, and emerging technologies, including ARV prodrug modifications and new DDS. Technological challenges, knowledge gaps, preclinical testing considerations, and future directions important in the context of clinical translation and implementation of LA HIV PrEP are discussed. Expert opinion: The HIV prevention field is evolving faster than ever and the bar for developing next-generation LA HIV prevention options continues to rise. The requirements for viable LA PrEP products to be implemented in resource-limited settings are challenging, necessitating proactive consideration and product modifications during the design and testing of promising new candidates. If successfully translated, next-generation LA PrEP that are safe, affordable, highly effective, and accepted by both end-users and key stakeholders will offer significant potential to curb the HIV pandemic.
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Affiliation(s)
- Vivek Agrahari
- CONRAD, Eastern Virginia Medical School, Norfolk, VA, USA
| | | | | | - Andrew P. Wong
- CONRAD, Eastern Virginia Medical School, Norfolk, VA, USA
| | - Onkar N. Singh
- CONRAD, Eastern Virginia Medical School, Norfolk, VA, USA
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4
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Qureshi A, Ouattara LA, El-Sayed NS, Verma A, Doncel GF, Choudhary MI, Siddiqui H, Parang K. Synthesis and Evaluation of Anti-HIV Activity of Mono- and Di-Substituted Phosphonamidate Conjugates of Tenofovir. Molecules 2022; 27:4447. [PMID: 35889320 PMCID: PMC9316519 DOI: 10.3390/molecules27144447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 07/04/2022] [Accepted: 07/05/2022] [Indexed: 02/01/2023] Open
Abstract
The activity of nucleoside and nucleotide analogs as antiviral agents requires phosphorylation by endogenous enzymes. Phosphate-substituted analogs have low bioavailability due to the presence of ionizable negatively-charged groups. To circumvent these limitations, several prodrug approaches have been proposed. Herein, we hypothesized that the conjugation or combination of the lipophilic amide bond with nucleotide-based tenofovir (TFV) (1) could improve the anti-HIV activity. During the current study, the hydroxyl group of phosphonates in TFV was conjugated with the amino group of L-alanine, L-leucine, L-valine, and glycine amino acids and other long fatty ester hydrocarbon chains to synthesize 43 derivatives. Several classes of derivatives were synthesized. The synthesized compounds were characterized by 1H NMR, IR, UV, and mass spectrometry. In addition, several of the synthesized compounds were evaluated as racemic mixtures for anti-HIV activity in vitro in a single round infection assay using TZM-bl cells at 100 ng/mL. TFV (1) was used as a positive control and inhibited HIV infection by 35%. Among all the evaluated compounds, the disubstituted heptanolyl ester alanine phosphonamidate with naphthol oleate (69), pentanolyl ester alanine phosphonamidate with phenol oleate (62), and butanolyl ester alanine phosphonamidate with naphthol oleate (87) ester conjugates of TFV were more potent than parent drug TFV with 79.0%, 76.5%, 71.5% inhibition, respectively, at 100 ng/mL. Furthermore, two fatty acyl amide conjugates of tenofovir alafenamide (TAF) were synthesized and evaluated for comparative studies with TAF and TFV conjugates. Tetradecanoyl TAF conjugate 95 inhibited HIV infection by 99.6% at 100 ng/mL and showed comparable activity to TAF (97-99% inhibition) at 10-100 ng/mL but was more potent than TAF when compared at molar concentration.
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Affiliation(s)
- Aaminat Qureshi
- H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan;
| | - Louise A. Ouattara
- CONRAD, Department of Obstetrics and Gynecology, Eastern Virginia Medical School, Norfolk, VA 23507, USA; (L.A.O.); (G.F.D.)
| | - Naglaa Salem El-Sayed
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, CA 92618, USA; (N.S.E.-S.); (A.V.)
- Cellulose and Paper Department, National Research Center, Dokki, Cairo 12622, Egypt
| | - Amita Verma
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, CA 92618, USA; (N.S.E.-S.); (A.V.)
- Bioorganic and Medicinal Chemistry Research Laboratory, Department of Pharmaceutical Sciences, Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj 211007, India
| | - Gustavo F. Doncel
- CONRAD, Department of Obstetrics and Gynecology, Eastern Virginia Medical School, Norfolk, VA 23507, USA; (L.A.O.); (G.F.D.)
| | - Muhammad Iqbal Choudhary
- H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan;
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
- Department of Biochemistry, King Abdul Aziz University, Jeddah 21452, Saudi Arabia
- Department of Chemistry, Faculty of Science and Technology, Universitas Airlangga, Komplek Campus C, Surabaya 60115, Indonesia
| | - Hina Siddiqui
- H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan;
| | - Keykavous Parang
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, CA 92618, USA; (N.S.E.-S.); (A.V.)
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5
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Agarwal HK, Chhikara BS, Ye G, Bhavaraju S, Dixit A, Kumar A, Doncel GF, Parang K. Synthesis and Biological Evaluation of 5'- O-Fatty Acyl Ester Derivatives of 3'-Fluoro-2',3'-dideoxythymidine as Potential Anti-HIV Microbicides. Molecules 2022; 27:3352. [PMID: 35630829 PMCID: PMC9143043 DOI: 10.3390/molecules27103352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 05/20/2022] [Accepted: 05/21/2022] [Indexed: 11/23/2022] Open
Abstract
A number of 5′-O-fatty acyl derivatives of 3′-fluoro-2′,3′-dideoxythymidine (FLT, 1) were synthesized. These conjugates were evaluated for their potential as topical microbicides with anti-HIV activity against cell-free (X4 and R5), cell-associated, and multidrug-resistant viruses. Compared to FLT and 3′-azido-2′,3′-dideoxythymidine (AZT), 5′-O-(12-azidododecanoyl) (5), 5′-O-myristoyl (6), and 5′-O-(12-thioethyldodecanoyl) (8) derivatives of FLT were found to be more active against both cell-free viruses (lymphocytotropic and monocytotropic strains) with EC50 values of 0.4 μM, 1.1 μM, and <0.2 μM, respectively, as well as cell-associated virus with EC50 values of 12.6, 6.4, and 2.3 μM, respectively. Conjugates 5, 6, and 8 exhibited >4 and >30 times better antiviral index than FLT and AZT, respectively. Conjugates 5 and 8 were significantly more potent than FLT against many multidrug-resistant strains. A comparison of the anti-HIV activity with the corresponding non-hydrolyzable ether conjugates suggested that ester hydrolysis to FLT and fatty acids is critical to enable anti-HIV activity. Cellular uptake studies were conducted using fluorescent derivatives of FLT attached with 5(6)-carboxyfluorescein through either β-alanine (23) or 12-aminododecanoic acid (24) spacers. The lipophilic fluorescent analog with a long chain (24) showed more than 12 times higher cellular uptake profile than the fluorescent analog with a short chain (23). These studies further confirmed that the attachment of fatty acids improved the cellular uptake of nucleoside conjugates. In addition, 5, 6, and 8 were the least cytotoxic and did not alter vaginal cell and sperm viability compared to the positive control, a commercial topical spermicide (N-9), which significantly decreased sperm and vaginal cell viability inducing the generation of proinflammatory cytokines.
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Affiliation(s)
- Hitesh K. Agarwal
- Department of Pharmaceutical Sciences, School of Pharmacy, South University, 709 Mall Boulevard, Savannah, GA 31406, USA
- Department of Biomedical and Pharmaceutical Sciences, School of Pharmacy, University of Rhode Island, Kingston, RI 02881, USA; (B.S.C.); (G.Y.); (S.B.); (A.D.); (A.K.)
| | - Bhupender S. Chhikara
- Department of Biomedical and Pharmaceutical Sciences, School of Pharmacy, University of Rhode Island, Kingston, RI 02881, USA; (B.S.C.); (G.Y.); (S.B.); (A.D.); (A.K.)
| | - Guofeng Ye
- Department of Biomedical and Pharmaceutical Sciences, School of Pharmacy, University of Rhode Island, Kingston, RI 02881, USA; (B.S.C.); (G.Y.); (S.B.); (A.D.); (A.K.)
| | - Sitaram Bhavaraju
- Department of Biomedical and Pharmaceutical Sciences, School of Pharmacy, University of Rhode Island, Kingston, RI 02881, USA; (B.S.C.); (G.Y.); (S.B.); (A.D.); (A.K.)
| | - Ajay Dixit
- Department of Biomedical and Pharmaceutical Sciences, School of Pharmacy, University of Rhode Island, Kingston, RI 02881, USA; (B.S.C.); (G.Y.); (S.B.); (A.D.); (A.K.)
- ITC Life Science & Technology Center, #3, 1st Main, Peenya Industrial Area, 1st Phase, Bangalore 560058, India
| | - Anil Kumar
- Department of Biomedical and Pharmaceutical Sciences, School of Pharmacy, University of Rhode Island, Kingston, RI 02881, USA; (B.S.C.); (G.Y.); (S.B.); (A.D.); (A.K.)
| | - Gustavo F. Doncel
- CONRAD, Department of Obstetrics and Gynecology, Eastern Virginia Medical School, Norfolk, VA 23507, USA
| | - Keykavous Parang
- Department of Biomedical and Pharmaceutical Sciences, School of Pharmacy, University of Rhode Island, Kingston, RI 02881, USA; (B.S.C.); (G.Y.); (S.B.); (A.D.); (A.K.)
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, CA 92618, USA
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6
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Salehi D, Mozaffari S, Zoghebi K, Lohan S, Mandal D, Tiwari RK, Parang K. Amphiphilic Cell-Penetrating Peptides Containing Natural and Unnatural Amino Acids as Drug Delivery Agents. Cells 2022; 11:cells11071156. [PMID: 35406720 PMCID: PMC8997995 DOI: 10.3390/cells11071156] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 03/20/2022] [Accepted: 03/23/2022] [Indexed: 02/04/2023] Open
Abstract
A series of cyclic peptides, [(DipR)(WR)4], [(DipR)2(WR)3], [(DipR)3(WR)2], [(DipR)4(WR)], and [DipR]5, and their linear counterparts containing arginine (R) as positively charged residues and tryptophan (W) or diphenylalanine (Dip) as hydrophobic residues, were synthesized and evaluated for their molecular transporter efficiency. The in vitro cytotoxicity of the synthesized peptides was determined in human epithelial ovary adenocarcinoma cells (SK-OV-3), human lymphoblast peripheral blood cells (CCRF-CEM), human embryonic epithelial kidney healthy cells (HEK-293), human epithelial mammary gland adenocarcinoma cells (MDA-MB-468), pig epithelial kidney normal cells (LLC-PK1), and human epithelial fibroblast uterine sarcoma cells (MES-SA). A concentration of 5–10 µM and 3 h incubation were selected in uptake studies. The cellular uptake of a fluorescent-labeled phosphopeptide, stavudine, lamivudine, emtricitabine, and siRNA was determined in the presence of peptides via flow cytometry. Among the peptides, [DipR]5 (10 µM) was found to be the most efficient transporter and significantly improved the uptake of F’-GpYEEI, i.e., by approximately 130-fold after 3 h incubation in CCRF-CEM cells. Confocal microscopy further confirmed the improved delivery of fluorescent-labeled [DipR]5 (F’-[K(DipR)5]) alone and F’-GpYEEI in the presence of [DipR]5 in MDA-MB-231 cells. The uptake of fluorescent-labeled siRNA (F’-siRNA) in the presence of [DipR]5 with N/P ratios of 10 and 20 was found to be 30- and 50-fold higher, respectively, compared with the cells exposed to F’-siRNA alone. The presence of endocytosis inhibitors, i.e., nystatin, chlorpromazine, chloroquine, and methyl β-cyclodextrin, did not completely inhibit the cellular uptake of F’-[K(DipR)5] alone or F’-GpYEEI in the presence of [DipR]5, suggesting that a combination of mechanisms contributes to uptake. Circular dichroism was utilized to determine the secondary structure, while transmission electron microscopy was used to evaluate the particle sizes and morphology of the peptides. The data suggest the remarkable membrane transporter property of [DipR]5 for improving the delivery of various small molecules and cell-impermeable negatively charged molecules (e.g., siRNA and phosphopeptide).
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Affiliation(s)
- David Salehi
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Harry and Diane Rinker Health Science Campus, Chapman University School of Pharmacy, Irvine, CA 92618, USA; (D.S.); (S.M.); (K.Z.); (S.L.); (D.M.)
| | - Saghar Mozaffari
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Harry and Diane Rinker Health Science Campus, Chapman University School of Pharmacy, Irvine, CA 92618, USA; (D.S.); (S.M.); (K.Z.); (S.L.); (D.M.)
| | - Khalid Zoghebi
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Harry and Diane Rinker Health Science Campus, Chapman University School of Pharmacy, Irvine, CA 92618, USA; (D.S.); (S.M.); (K.Z.); (S.L.); (D.M.)
- Department of Pharmaceutical Chemistry, College of Pharmacy, Jazan University, Jazan 82826, Saudi Arabia
| | - Sandeep Lohan
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Harry and Diane Rinker Health Science Campus, Chapman University School of Pharmacy, Irvine, CA 92618, USA; (D.S.); (S.M.); (K.Z.); (S.L.); (D.M.)
| | - Dindyal Mandal
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Harry and Diane Rinker Health Science Campus, Chapman University School of Pharmacy, Irvine, CA 92618, USA; (D.S.); (S.M.); (K.Z.); (S.L.); (D.M.)
- School of Biotechnology, KIIT Deemed to be University, Bhubaneswar 751024, India
| | - Rakesh K. Tiwari
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Harry and Diane Rinker Health Science Campus, Chapman University School of Pharmacy, Irvine, CA 92618, USA; (D.S.); (S.M.); (K.Z.); (S.L.); (D.M.)
- Correspondence: (R.K.T.); (K.P.); Tel.: +1-714-516-5483 (R.K.T.); +1-714-516-5489 (K.P.)
| | - Keykavous Parang
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Harry and Diane Rinker Health Science Campus, Chapman University School of Pharmacy, Irvine, CA 92618, USA; (D.S.); (S.M.); (K.Z.); (S.L.); (D.M.)
- Correspondence: (R.K.T.); (K.P.); Tel.: +1-714-516-5483 (R.K.T.); +1-714-516-5489 (K.P.)
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7
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El-Sayed NS, Jureka AS, Edwards MR, Lohan S, Williams CG, Keiser PT, Davey RA, Totonchy J, Tiwari RK, Basler CF, Parang K. Synthesis and antiviral activity of fatty acyl conjugates of remdesivir against severe acute respiratory syndrome coronavirus 2 and Ebola virus. Eur J Med Chem 2021; 226:113862. [PMID: 34583312 PMCID: PMC8454092 DOI: 10.1016/j.ejmech.2021.113862] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 08/30/2021] [Accepted: 09/18/2021] [Indexed: 01/18/2023]
Abstract
We report here the synthesis, purification, and characterization of mono- and di-fatty acyl conjugates of remdesivir (RDV) and their in vitro antiviral activity against SAR-CoV-2, an Ebola virus transcription- and replication-competent virus-like particle (trVLP) system, and infectious Ebola virus. The most potent monofatty acyl conjugate was 4b, containing a 4-oxatetradecanolyl at the 3' position. Monofatty acyl conjugates, 3'-O-tetradecanoyl (4a) (IC50(VeroE6) = 2.3 μM; IC50(Calu3) = 0.24 μM), 3'-O-4-oxatetradodecanoyl (4b) (IC50(VeroE6) = 2.0 μM; IC50(Calu3) = 0.18 μM), and 3'-O-(12-ethylthiododecanoyl) (4e) (IC50(VeroE6) = 2.4 μM; IC50(Calu3) = 0.25 μM) derivatives exhibited less activity than RDV (IC50(VeroE6) = 0.85 μM; IC50(Calu3) = 0.06 μM) in both VeroE6 and Calu3 cells. Difatty acylation led to a significant reduction in the antiviral activity of RDV (as shown in conjugates 5a and 5b) against SARS-CoV-2 when compared with monofatty acylation (3a-e and 4a-e). About 77.9% of 4c remained intact after 4 h incubation with human plasma while only 47% of parent RDV was observed at the 2 h time point. The results clearly indicate the effectiveness of fatty acylation to improve the half-life of RDV. The antiviral activities of a number of monofatty acyl conjugates of RDV, such as 3b, 3e, and 4b, were comparable with RDV against the Ebola trVLP system. Meanwhile, the corresponding physical mixtures of RDV and fatty acids 6a and 6b showed 1.6 to 2.2 times less antiviral activity than the corresponding conjugates, 4a and 4c, respectively, against SARS-CoV-2 in VeroE6 cells. A significant reduction in viral RNA synthesis was observed for selected compounds 3a and 4b consistent with the IC50 results. These studies indicate the potential of these compounds as long-acting antiviral agents or prodrugs of RDV.
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Affiliation(s)
- Naglaa Salem El-Sayed
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, CA, 92618, USA; AJK Biopharmaceutical, 5270 California Ave, Irvine, CA, 92617, USA; Cellulose & Paper Department, National Research Centre, 33 El-Bohouth St. former (El-Tahrir St.), Dokki, Giza P.O. Box, 12622, Egypt
| | - Alexander S Jureka
- Center for Microbial Pathogenesis, Institute for Biomedical Sciences, Georgia State University, 686 Petit Science Center, Atlanta, GA, 30302, USA
| | - Megan R Edwards
- Center for Microbial Pathogenesis, Institute for Biomedical Sciences, Georgia State University, 686 Petit Science Center, Atlanta, GA, 30302, USA
| | - Sandeep Lohan
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, CA, 92618, USA; AJK Biopharmaceutical, 5270 California Ave, Irvine, CA, 92617, USA
| | - Caroline G Williams
- Center for Microbial Pathogenesis, Institute for Biomedical Sciences, Georgia State University, 686 Petit Science Center, Atlanta, GA, 30302, USA
| | | | - Robert A Davey
- NEIDL, 620 Albany St, Boston University, Boston, MA, 02118, USA
| | - Jennifer Totonchy
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, CA, 92618, USA
| | - Rakesh K Tiwari
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, CA, 92618, USA; AJK Biopharmaceutical, 5270 California Ave, Irvine, CA, 92617, USA.
| | - Christopher F Basler
- Center for Microbial Pathogenesis, Institute for Biomedical Sciences, Georgia State University, 686 Petit Science Center, Atlanta, GA, 30302, USA.
| | - Keykavous Parang
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, CA, 92618, USA; AJK Biopharmaceutical, 5270 California Ave, Irvine, CA, 92617, USA.
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8
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Khayyatnejad Shoushtari S, Zoghebi K, Sajid MI, Tiwari RK, Parang K. Hybrid Cyclic-Linear Cell-Penetrating Peptides Containing Alternative Positively Charged and Hydrophobic Residues as Molecular Transporters. Mol Pharm 2021; 18:3909-3919. [PMID: 34491768 DOI: 10.1021/acs.molpharmaceut.1c00594] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The cell membrane properties create a significant obstacle in intracellular delivery of cell-impermeable and negatively charged molecules. Herein, we report the synthesis and biological evaluation of a novel series of hybrid cyclic-linear peptides containing alternative positive and hydrophobic amino acids on the ring and side chain [(RW)5]K(RW)X (X = 1-5) to compare their molecular transporter efficiency. The peptides were synthesized through Fmoc solid-phase peptide synthesis. In vitro cytotoxicity of the peptides showed that the peptides did not exhibit any significant cytotoxicity at the concentration of 10 μM in human leukemia carcinoma cell line (CCRF-CEM), human ovarian adenocarcinoma cells (SK-OV-3), human epithelial embryonic kidney healthy (HEK-293), and human epithelial mammary gland adenocarcinoma cells (MDA-MB-231) after 3 h incubation. The cellular uptake of a fluorescence-labeled phosphopeptide (F'-GpYEEI) and anti-human immunodeficiency virus (HIV) drugs (lamivudine (F'-3TC), emtricitabine (F'-FTC), Stavudine (F'-d4T)), where F' is carboxyfluorescein, was measured in the presence of the peptides in CCRF-CEM and SK-OV-3 cells. Among all peptides, [(RW)5K](RW)5 (10 μM) was the most efficient transporter that improved the cellular uptake of F'-GpYEEI (2 μM) by 18- and 11-fold in CCRF-CEM and SK-OV-3, respectively, compared with F'-GpYEEI alone. Fluorescence-activated cell sorting (FACS) analysis results indicated that the cellular uptake of fluorescence-labeled peptide (F'-[(RW)5K](RW)5) was only partially inhibited by chlorpromazine as an endocytosis inhibitor after 3 h incubation in MDA-MB-231 cells. These data suggest the potential of this series of hybrid cyclic-linear peptides as cell-penetrating peptides and molecular transporters.
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Affiliation(s)
- Sorour Khayyatnejad Shoushtari
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, California 92618, United States
| | - Khalid Zoghebi
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, California 92618, United States.,Department of Pharmaceutical Chemistry, College of Pharmacy, Jazan University, P.O. Box 114, Jazan 45142, Saudi Arabia
| | - Muhammad Imran Sajid
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, California 92618, United States.,Faculty of Pharmacy, University of Central Punjab, Lahore 54000, Pakistan
| | - Rakesh Kumar Tiwari
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, California 92618, United States
| | - Keykavous Parang
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, California 92618, United States
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9
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Haaland RE, Fountain J, Dinh C, Lupo LD, Martin A, Conway-Washington C, Hall L, Kelley CF, Garcia-Lerma JG, Heneine W. Antiretroviral drug exposure in urethral and glans surface sampling of the penis. J Antimicrob Chemother 2021; 76:2368-2374. [PMID: 34007982 PMCID: PMC10134741 DOI: 10.1093/jac/dkab155] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 04/13/2021] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND HIV exposure to penile tissues provides a risk of acquisition among men, yet studies evaluating penile antiretroviral (ARV) drug distribution have been lacking. We measured ARVs on urethral and glans surface swabs collected following a dose of tenofovir alafenamide, emtricitabine, elvitegravir, darunavir and cobicistat. METHODS Thirty-five HIV-negative male participants provided urethral swabs, glans swabs, rectal swabs, blood and urine up to 96 h following a single dose of tenofovir alafenamide/emtricitabine/elvitegravir/cobicistat and darunavir. ARVs were measured by liquid chromatography-mass spectrometry with a lower limit of detection (LOD) of 1 ng/swab for swabs and 10 ng/mL for plasma and urine. Concentrations are reported as median and range. RESULTS Urethral swab emtricitabine and darunavir concentrations peaked at 4 h for emtricitabine (36 ng/swab; 3-307 ng/swab) and 8 h for darunavir (25 ng/swab; 2-52 ng/swab). Glans swab emtricitabine and darunavir concentrations peaked 24 h after dosing (emtricitabine 14 ng/swab, <LOD-328 ng/swab; darunavir 6 ng/swab, <LOD-149 ng/swab). Estimated peak urethral secretion emtricitabine and darunavir concentrations are between 10 and 20 μg/mL, similar to rectal secretions, 4-fold greater than in plasma, but 2-fold lower than in urine. Tenofovir and elvitegravir were detected on less than 20% of urethral or glans swabs collected within 24 h of dosing. CONCLUSIONS We document ARV dosing in the urethra and on the glans surface with high drug concentrations noted for emtricitabine and darunavir and lower tenofovir and elvitegravir concentrations. Data suggest a potential protective role of urethral emtricitabine or darunavir against penile HIV acquisition.
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Affiliation(s)
- Richard E Haaland
- Division of HIV/AIDS Prevention, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Jeffrey Fountain
- Division of HIV/AIDS Prevention, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Chuong Dinh
- Division of HIV/AIDS Prevention, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - L Davis Lupo
- Division of HIV/AIDS Prevention, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Amy Martin
- Division of HIV/AIDS Prevention, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Christopher Conway-Washington
- The Hope Clinic of the Emory Vaccine Center, Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - LaShonda Hall
- The Hope Clinic of the Emory Vaccine Center, Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - Colleen F Kelley
- The Hope Clinic of the Emory Vaccine Center, Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA.,Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - J Gerardo Garcia-Lerma
- Division of HIV/AIDS Prevention, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Walid Heneine
- Division of HIV/AIDS Prevention, Centers for Disease Control and Prevention, Atlanta, GA, USA
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10
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Yoshida Y, Honma M, Kimura Y, Abe H. Structure, Synthesis and Inhibition Mechanism of Nucleoside Analogues as HIV-1 Reverse Transcriptase Inhibitors (NRTIs). ChemMedChem 2021; 16:743-766. [PMID: 33230979 DOI: 10.1002/cmdc.202000695] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Revised: 10/31/2020] [Indexed: 12/13/2022]
Abstract
Acquired immunodeficiency syndrome (AIDS) is caused by infection with the human immunodeficiency virus (HIV). Although treatments against HIV infection are available, AIDS remains a serious disease that causes many deaths annually. Although a variety of anti-HIV drugs have been synthesized and marketed to treat HIV-infected patients, nucleoside analogue reverse transcriptase inhibitors (NRTIs), which mimic nucleosides, are used extensively and remain a subject of interest to medicinal chemists. However, HIV has acquired drug resistance against NRTIs, and thus the struggle to find novel therapies continues. In this review, we trace the trajectory of NRTIs, focusing on the synthesis, mechanisms of action and applications of NRTIs that have been developed.
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Affiliation(s)
- Yuki Yoshida
- Graduate School of Science, Department of Chemistry, Nagoya University Furo-cho, Chikusa-ku, Nagoya, Aichi, 464-8602, Japan
| | - Masakazu Honma
- Nucleic Acid Medicine Research Laboratories, Research Functions Unit, R&D Division, Kyowa Kirin Co., Ltd., 3-6-6, Asahi-machi, Machida-shi, >, Tokyo, 194-8533, Japan
| | - Yasuaki Kimura
- Graduate School of Science, Department of Chemistry, Nagoya University Furo-cho, Chikusa-ku, Nagoya, Aichi, 464-8602, Japan
| | - Hiroshi Abe
- Graduate School of Science, Department of Chemistry, Nagoya University Furo-cho, Chikusa-ku, Nagoya, Aichi, 464-8602, Japan.,Research Center for Materials Science, Nagoya University Furo-cho, Chikusa-ku, Nagoya, Aichi, 464-8602, Japan.,CREST, Japan Science and Technology Agency, 7, Gobancho, Chiyoda-ku, Tokyo, 102-0076, Japan.,Institute for Glyco-core Research (iGCORE), Nagoya University Furo-cho, Chikusa-ku, Nagoya, Aichi, 464-8602, Japan
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11
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Mohammed EHM, Mandal D, Mozaffari S, Abdel-Hamied Zahran M, Mostafa Osman A, Kumar Tiwari R, Parang K. Comparative Molecular Transporter Properties of Cyclic Peptides Containing Tryptophan and Arginine Residues Formed through Disulfide Cyclization. Molecules 2020; 25:2581. [PMID: 32498339 PMCID: PMC7321319 DOI: 10.3390/molecules25112581] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 05/27/2020] [Accepted: 05/27/2020] [Indexed: 11/17/2022] Open
Abstract
We have previously reported cyclic cell-penetrating peptides [WR]5 and [WR]4 as molecular transporters. To optimize further the utility of our developed peptides for targeted therapy in cancer cells using the redox condition, we designed a new generation of peptides and evaluated their cytotoxicity as well as uptake behavior against different cancer cell lines. Thus, cyclic [C(WR)xC] and linear counterparts (C(WR)xC), where x = 4-5, were synthesized using Fmoc/tBu solid-phase peptide synthesis, purified, and characterized. The compounds did not show any significant cytotoxicity (at 25 µM) against ovarian (SK-OV-3), leukemia (CCRF-CEM), gastric adenocarcinoma (CRL-1739), breast carcinoma (MDA-MB-231), and normal kidney (LLCPK) cells after 24 and 72 h incubation. Both cyclic [C(WR)5C] and linear (C(WR)5C) demonstrated comparable molecular transporter properties versus [WR]5 in the delivery of a phosphopeptide (F'-GpYEEI) in CCRF-CEM cells. The uptake of F'-GpYEEI in the presence of 1,4-dithiothreitol (DTT) as the reducing agent was significantly improved in case of l(C(WR)5C), while it was not changed by [C(WR)5C]. Fluorescence microscopy also demonstrated a significant uptake of F'-GpYEEI in the presence of l(C(WR)5C). Cyclic [C(WR)5C] improved the uptake of the fluorescent-labeled anti-HIV drugs F'-d4T, F'-3TC, and F'-FTC by 3.0-4.9-fold. These data indicate that both [C(WR)5C] and linear (C(WR)5C) peptides can act as molecular transporters.
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Affiliation(s)
- Eman H. M. Mohammed
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, CA 92618, USA; (E.H.M.M.); (D.M.); (S.M.)
- Chemistry Department, Faculty of Science, Chemistry department, Menoufia University, Shebin El-Koam 51132, Egypt; (M.A.-H.Z.); (A.M.O.)
| | - Dindyal Mandal
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, CA 92618, USA; (E.H.M.M.); (D.M.); (S.M.)
| | - Saghar Mozaffari
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, CA 92618, USA; (E.H.M.M.); (D.M.); (S.M.)
| | - Magdy Abdel-Hamied Zahran
- Chemistry Department, Faculty of Science, Chemistry department, Menoufia University, Shebin El-Koam 51132, Egypt; (M.A.-H.Z.); (A.M.O.)
| | - Amany Mostafa Osman
- Chemistry Department, Faculty of Science, Chemistry department, Menoufia University, Shebin El-Koam 51132, Egypt; (M.A.-H.Z.); (A.M.O.)
- Department of Chemistry, College of Science and Humanities in Al-Kharj, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia
| | - Rakesh Kumar Tiwari
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, CA 92618, USA; (E.H.M.M.); (D.M.); (S.M.)
| | - Keykavous Parang
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, CA 92618, USA; (E.H.M.M.); (D.M.); (S.M.)
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12
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Parang K, El-Sayed NS, Kazeminy AJ, Tiwari RK. Comparative Antiviral Activity of Remdesivir and Anti-HIV Nucleoside Analogs Against Human Coronavirus 229E (HCoV-229E). Molecules 2020; 25:2343. [PMID: 32429580 PMCID: PMC7287735 DOI: 10.3390/molecules25102343] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 05/07/2020] [Accepted: 05/16/2020] [Indexed: 12/21/2022] Open
Abstract
Remdesivir is a nucleotide prodrug that is currently undergoing extensive clinical trials for the treatment of COVID-19. The prodrug is metabolized to its active triphosphate form and interferes with the action of RNA-dependent RNA polymerase of SARS-COV-2. Herein, we report the antiviral activity of remdesivir against human coronavirus 229E (HCoV-229E) compared to known anti-HIV agents. These agents included tenofovir (TFV), 4'-ethynyl-2-fluoro-2'-deoxyadenosine (EFdA), alovudine (FLT), lamivudine (3TC), and emtricitabine (FTC), known as nucleoside reverse-transcriptase inhibitors (NRTIs), and a number of 5'-O-fatty acylated anti-HIV nucleoside conjugates. The anti-HIV nucleosides interfere with HIV RNA-dependent DNA polymerase and/or act as chain terminators. Normal human fibroblast lung cells (MRC-5) were used to determine the cytotoxicity of the compounds. The study revealed that remdesivir exhibited an EC50 value of 0.07 µM against HCoV-229E with TC50 of > 2.00 µM against MRC-5 cells. Parent NRTIs were found to be inactive against (HCoV-229E) at tested concentrations. Among all the NRTIs and 5'-O-fatty acyl conjugates of NRTIs, 5'-O-tetradecanoyl ester conjugate of FTC showed modest activity with EC50 and TC50 values of 72.8 µM and 87.5 µM, respectively. These data can be used for the design of potential compounds against other coronaviruses.
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Affiliation(s)
- Keykavous Parang
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, CA 92618, USA; (N.S.E.-S.); (A.J.K.)
| | - Naglaa Salem El-Sayed
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, CA 92618, USA; (N.S.E.-S.); (A.J.K.)
- Cellulose & Paper Department, National Research Centre, 33 El-Bohouth St. former (El-Tahrir St.), Dokki, Giza P.O. Box 12622, Egypt
| | - Assad J. Kazeminy
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, CA 92618, USA; (N.S.E.-S.); (A.J.K.)
- AJK Biopharmaceutical LLC, 5270 California Ave, Irvine, CA 92697, USA
| | - Rakesh K. Tiwari
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, CA 92618, USA; (N.S.E.-S.); (A.J.K.)
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13
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Takalani F, Kumar P, Kondiah PPD, Choonara YE, Pillay V. Lipid-drug conjugates and associated carrier strategies for enhanced antiretroviral drug delivery. Pharm Dev Technol 2019; 25:267-280. [PMID: 31744408 DOI: 10.1080/10837450.2019.1694037] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Mortality rate of patients infected with HIV-1 has been significantly reduced by using HAART. However, the virus to date has not been eradicated. Transmission of HIV-1 infection through sexual intercourse remains an ongoing challenge, with increased risk of infection occurring in women. Interestingly, ARV drugs can be chemically linked with lipids to produce lipid-drug conjugates (LDCs). This alters pharmacokinetic properties of ARV drugs and thereby resulting in improved effectiveness. Although LDCs can be administered without a delivery carrier, they are usually incorporated into suitable delivery systems such as lipid nanoparticles, polymeric nanoparticles, micelles, liposomes, emulsions, and carbon nanotubes. Given that LDCs have the potential to improve oral bioavailability, lipophilicity, toxicity, and drug targeting, it is of our great interest to review strategies of lipid-drug conjugation together with their delivery systems for enhanced antiretroviral efficacy.
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Affiliation(s)
- Funanani Takalani
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Pradeep Kumar
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Pierre P D Kondiah
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Yahya E Choonara
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Viness Pillay
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
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14
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Ibrahim IM, Bade AN, Lin Z, Soni D, Wojtkiewicz M, Dyavar Shetty BL, Gautam N, McMillan JM, Alnouti Y, Edagwa BJ, Gendelman HE. Synthesis and characterization of a long-acting emtricitabine prodrug nanoformulation. Int J Nanomedicine 2019; 14:6231-6247. [PMID: 31496683 PMCID: PMC6689761 DOI: 10.2147/ijn.s215447] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2019] [Accepted: 07/10/2019] [Indexed: 12/16/2022] Open
Abstract
Purpose A palmitoylated prodrug of emtricitabine (FTC) was synthesized to extend the drug’s half-life, antiretroviral activities and biodistribution. Methods A modified FTC prodrug (MFTC) was synthesized by palmitoyl chloride esterification. MFTC’s chemical structure was evaluated by nuclear magnetic resonance. The created hydrophobic prodrug nanocrystals were encased into a poloxamer surfactant and the pharmacokinetics (PK), biodistribution and antiretroviral activities of the nanoformulation (NMFTC) were assessed. The conversion of MFTC to FTC triphosphates was evaluated. Results MFTC coated with poloxamer formed stable nanocrystals (NMFTC). NMFTC demonstrated an average particle size, polydispersity index and zeta potential of 350 nm, 0.24 and −20 mV, respectively. Drug encapsulation efficiency was 90%. NMFTC was readily taken up by human monocyte-derived macrophages yielding readily detected intracellular FTC triphosphates and an extended PK profile. Conclusion NMFTC shows improved antiretroviral activities over native FTC. This is coordinate with its extended apparent half-life. The work represents an incremental advance in the development of a long-acting FTC formulation.
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Affiliation(s)
- Ibrahim M Ibrahim
- Department of Pharmacology and Experimental Neuroscience, College of Medicine, University of Nebraska Medical Center, Omaha, NE, USA.,Department of Pharmacology, College of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Aditya N Bade
- Department of Pharmacology and Experimental Neuroscience, College of Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - Zhiyi Lin
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, NE, USA
| | - Dhruvkumar Soni
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, NE, USA
| | - Melinda Wojtkiewicz
- Department of Pharmacology and Experimental Neuroscience, College of Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - Bhagya Laxmi Dyavar Shetty
- Department of Pharmacology and Experimental Neuroscience, College of Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - Nagsen Gautam
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, NE, USA
| | - JoEllyn M McMillan
- Department of Pharmacology and Experimental Neuroscience, College of Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - Yazen Alnouti
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, NE, USA
| | - Benson J Edagwa
- Department of Pharmacology and Experimental Neuroscience, College of Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - Howard E Gendelman
- Department of Pharmacology and Experimental Neuroscience, College of Medicine, University of Nebraska Medical Center, Omaha, NE, USA.,Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, NE, USA
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15
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Hanna S, Mozaffari S, Tiwari RK, Parang K. Comparative Molecular Transporter Efficiency of Cyclic Peptides Containing Tryptophan and Arginine Residues. ACS OMEGA 2018; 3:16281-16291. [PMID: 31458264 PMCID: PMC6643651 DOI: 10.1021/acsomega.8b02589] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Accepted: 11/14/2018] [Indexed: 06/10/2023]
Abstract
Cyclic peptides containing tryptophan (W) and arginine (R) residues, [WR]5, [WR]6, [WR]7, [WR]8, and [WR]9, were synthesized through Fmoc solid-phase chemistry to compare their molecular transporter efficiency. The in vitro cytotoxicity of the peptides was evaluated using human leukemia carcinoma cell line (CCRF-CEM) and normal kidney cell line (LLC-PK1). [WR]6, [WR]7, [WR]8, and [WR]9 were not significantly cytotoxic to LLC-PK1cells at a concentration of 10 μM after 3 h incubation. Among all the peptides, [WR]9 was found to be a more efficient transporter than [WR]5, [WR]6, [WR]7, and [WR]8 in CCRF-CEM cells for delivery of a cell-impermeable fluorescence-labeled negatively charged phosphopeptide (F'-GpYEEI). [WR]9 (10 μM) improved the cellular uptake of F'-GpYEEI (2 μM) by 20-fold. The cellular uptake of a fluorescent conjugate of [WR]9, F'-[W9R8K], was increased in a concentration- and time-dependent pattern in CCRF-CEM cells. The uptake of F'-[W9R8K] was slightly reduced in CCRF-CEM cells in the presence of different endocytic inhibitors, such as nystatin, 5-(N-ethyl-N-isopropyl)amiloride, chlorpromazine, chloroquine, and methyl β-cyclodextrin. Furthermore, the uptake of F'-[W9R8K] was shown to be temperature-dependent and slightly adenosine 5'-triphosphate-dependent. The intracellular/cellular localization (in the nucleus and cytoplasm) of F'-[W9R8K] was confirmed by fluorescent microscopy in CCRF-CEM cells. These studies suggest that large cyclic peptides containing arginine and tryptophan can be used as a molecular transporter of specific compounds.
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16
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Krovi SA, Gallovic MD, Keller AM, Bhat M, Tiet P, Chen N, Collier MA, Gurysh EG, Pino EN, Johnson MM, Shamim Hasan Zahid M, Cottrell ML, Pirone JR, Kashuba AD, Kwiek JJ, Bachelder EM, Ainslie KM. Injectable long-acting human immunodeficiency virus antiretroviral prodrugs with improved pharmacokinetic profiles. Int J Pharm 2018; 552:371-377. [PMID: 30308272 DOI: 10.1016/j.ijpharm.2018.10.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Revised: 09/26/2018] [Accepted: 10/06/2018] [Indexed: 12/20/2022]
Abstract
While highly active antiretroviral therapy (HAART) has significantly reduced mortality rates in patients with human immunodeficiency virus type 1 (HIV-1), its efficacy may be impeded by emergence of drug resistance caused by lack of patient adherence. A therapeutic strategy that requires infrequent drug administration as a result of sustained release of antiretroviral drugs would put less burden on the patient. Long-acting antiretroviral prodrugs for HIV therapy were synthesized through modification of the active drugs, emtricitabine (FTC) and elvitegravir (EVG), with docosahexaenoic acid (DHA) in one-step, one-pot, high-yielding reactions. The in vitro drug release profiles of these synthetic conjugates demonstrated sustained and controlled release of the active drug over a period of 3-4 weeks attributable to the hydrolysis of the chemical linker in conjunction with the hydrophilicity of the parent drug. Both conjugates exhibited superior antiviral activities in tissue culture models of HIV replication as compared to those of the free drugs, strengthening their role as potent prodrugs for HIV therapy. Pharmacokinetic analysis in CD1 mice further confirmed the long-acting aspect of these conjugates with released drug concentrations in plasma detected at their respective IC90/IC95 values over a period of 2 weeks and discernable amounts of active drug even at 6 weeks. Our findings suggest that the injectable small molecule conjugates could be used as long-acting controlled release of FTC and EVG in attempts to mitigate adherence-related HIV resistance.
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Affiliation(s)
- Sai Archana Krovi
- Division of Pharmacoengineering and Molecular Pharmaceutics, University of North Carolina Eshelman School of Pharmacy, Chapel Hill, NC 27599, USA
| | - Matthew D Gallovic
- Division of Pharmacoengineering and Molecular Pharmaceutics, University of North Carolina Eshelman School of Pharmacy, Chapel Hill, NC 27599, USA
| | - Austin M Keller
- Department of Microbiology, Ohio State University, Columbus, OH 43210, USA
| | - Menakshi Bhat
- Department of Microbiology, Ohio State University, Columbus, OH 43210, USA
| | | | - Naihan Chen
- Division of Pharmacoengineering and Molecular Pharmaceutics, University of North Carolina Eshelman School of Pharmacy, Chapel Hill, NC 27599, USA
| | | | - Elizabeth G Gurysh
- Division of Pharmacoengineering and Molecular Pharmaceutics, University of North Carolina Eshelman School of Pharmacy, Chapel Hill, NC 27599, USA
| | - Erica N Pino
- Division of Pharmacoengineering and Molecular Pharmaceutics, University of North Carolina Eshelman School of Pharmacy, Chapel Hill, NC 27599, USA
| | - Monica M Johnson
- Division of Pharmacoengineering and Molecular Pharmaceutics, University of North Carolina Eshelman School of Pharmacy, Chapel Hill, NC 27599, USA
| | - M Shamim Hasan Zahid
- Division of Pharmacoengineering and Molecular Pharmaceutics, University of North Carolina Eshelman School of Pharmacy, Chapel Hill, NC 27599, USA
| | - Mackenzie L Cottrell
- Division of Pharmacotherapy and Experimental Therapeutics, University of North Carolina Eshelman School of Pharmacy, Chapel Hill, NC 27599, USA
| | - Jason R Pirone
- Division of Pharmacotherapy and Experimental Therapeutics, University of North Carolina Eshelman School of Pharmacy, Chapel Hill, NC 27599, USA
| | - Angela D Kashuba
- Division of Pharmacotherapy and Experimental Therapeutics, University of North Carolina Eshelman School of Pharmacy, Chapel Hill, NC 27599, USA
| | - Jesse J Kwiek
- Department of Microbiology, Ohio State University, Columbus, OH 43210, USA
| | - Eric M Bachelder
- Division of Pharmacoengineering and Molecular Pharmaceutics, University of North Carolina Eshelman School of Pharmacy, Chapel Hill, NC 27599, USA
| | - Kristy M Ainslie
- Division of Pharmacoengineering and Molecular Pharmaceutics, University of North Carolina Eshelman School of Pharmacy, Chapel Hill, NC 27599, USA; Department of Microbiology and Immunology, University of North Carolina, Chapel Hill, NC, USA.
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17
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Monroe M, Flexner C, Cui H. Harnessing nanostructured systems for improved treatment and prevention of HIV disease. Bioeng Transl Med 2018; 3:102-123. [PMID: 30065966 PMCID: PMC6063869 DOI: 10.1002/btm2.10096] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 05/15/2018] [Accepted: 05/17/2018] [Indexed: 12/12/2022] Open
Abstract
Combination antiretroviral therapy effectively controls human immunodeficiency virus (HIV) viral replication, delaying the progression to acquired immune deficiency syndrome and improving and extending quality of life of patients. However, the inability of antiretroviral therapeutics to target latent virus and their poor penetration of viral reserve tissues result in the need for continued treatment for the life of the patient. Side effects from long-term antiretroviral use and the development of drug resistance due to patient noncompliance are also continuing problems. Nanostructured systems of antiretroviral therapeutics have the potential to improve targeted delivery to viral reservoirs, reduce drug toxicity, and increase dosing intervals, thereby improving treatment outcomes and enhancing patient adherence. Despite these advantages, very few nanostructured antiretroviral delivery systems have made it to clinical trials due to challenges in preclinical and clinical development. In this context, we review the current challenges in HIV disease management, and the recent progress in leveraging the unique performance of nanostructured systems in therapeutic delivery for improved treatment and prevention of this incurable human disease.
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Affiliation(s)
- Maya Monroe
- Dept. of Chemical and Biomolecular Engineering The Johns Hopkins University, 3400 N Charles Street Baltimore MD 21218.,Institute for NanoBioTechnology The Johns Hopkins University, 3400 N Charles Street Baltimore MD 21218
| | - Charles Flexner
- Div. of Clinical Pharmacology and Infectious Diseases Johns Hopkins University School of Medicine and Bloomberg School of Public Health Baltimore MD 21205
| | - Honggang Cui
- Dept. of Chemical and Biomolecular Engineering The Johns Hopkins University, 3400 N Charles Street Baltimore MD 21218.,Institute for NanoBioTechnology The Johns Hopkins University, 3400 N Charles Street Baltimore MD 21218.,Dept. of Oncology, Sidney Kimmel Comprehensive Cancer Center The Johns Hopkins University School of Medicine Baltimore MD 21205.,Center for Nanomedicine The Wilmer Eye Institute, The Johns Hopkins University School of Medicine Baltimore MD 21231
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18
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Shirazi AN, Mozaffari S, Sherpa RT, Tiwari R, Parang K. Efficient Intracellular Delivery of Cell-Impermeable Cargo Molecules by Peptides Containing Tryptophan and Histidine. Molecules 2018; 23:1536. [PMID: 29949881 PMCID: PMC6100250 DOI: 10.3390/molecules23071536] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 06/21/2018] [Accepted: 06/25/2018] [Indexed: 12/21/2022] Open
Abstract
We have previously evaluated and reported numerous classes of linear and cyclic peptides containing hydrophobic and hydrophilic segments for intracellular delivery of multiple molecular cargos. Herein, a combination of histidine and tryptophan amino acids were designed and evaluated for their efficiency in intracellular delivery of cell-impermeable phosphopeptides and the anti-HIV drug, emtricitabine. Two new decapeptides, with linear and cyclic natures, both containing alternate tryptophan and histidine residues, were synthesized using Fmoc/tBu solid-phase chemistry. The peptides were characterized and purified by using matrix-assisted laser desorption/ionization (MALDI) spectroscopy and high-performance liquid chromatography (HPLC), respectively. These peptides did not show significant toxicity up to 100 µM in ovarian cancer (SK-OV-3) and leukemia cancer (CCRF-CEM) cells. Furthermore, the cellular uptake of a fluorescence (F’)-labeled cell-impermeable phosphopeptide (F’-GpYEEI) was enhanced in the presence of linear (WH)₅ and cyclic [WH]₅ by 2- and 8-fold, respectively, compared to the uptake of the phosphopeptide alone. The cellular uptake was not significantly changed in the presence of endocytosis inhibitors. Furthermore, the intracellular uptake of the fluorescently-labeled anti-HIV drug, emtricitabine (F’-FTC), by linear (WH)₅ and cyclic [WH]₅ in SK-OV-3 cancer cell lines was found to be enhanced by 3.5- and 9-fold, respectively, compared to that of the drug alone. Fluorescent uptake experiments confirmed the localization of F’-GpYEEI-loaded cyclic [WH]₅ intracellularly in the SK-OV-3 cancer cell line after 3 h of incubation. Thus, these data demonstrated that [WH]₅ containing tryptophan and histidine enhanced the cellular uptake of F’-GpYEEI and emtricitabine.
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Affiliation(s)
- Amir Nasrolahi Shirazi
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, CA 92618, USA.
| | - Saghar Mozaffari
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, CA 92618, USA.
| | - Rinzhin Tshering Sherpa
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, CA 92618, USA.
| | - Rakesh Tiwari
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, CA 92618, USA.
| | - Keykavous Parang
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, CA 92618, USA.
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19
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Abstract
Supplemental Digital Content is Available in the Text. Background: Antiretroviral drug discovery and formulation design will facilitate viral clearance in infectious reservoirs. Although progress has been realized for selected hydrophobic integrase and nonnucleoside reverse transcriptase inhibitors, limited success has been seen to date with hydrophilic nucleosides. To overcome these limitations, hydrophobic long-acting drug nanoparticles were created for the commonly used nucleoside reverse transcriptase inhibitor, lamivudine (2′,3′-dideoxy-3′-thiacytidine, 3TC). Methods: A 2-step synthesis created a slow-release long-acting hydrophobic 3TC. Conjugation of 3TC to a fatty acid created a myristoylated prodrug which was encased into a folate-decorated poloxamer 407. Both in vitro antiretroviral efficacy in human monocyte-derived macrophages and pharmacokinetic profiles in mice were evaluated for the decorated nanoformulated drug. Results: A stable drug formulation was produced by poloxamer encasement that improved monocyte–macrophage uptake, antiretroviral activities, and drug pharmacokinetic profiles over native drug formulations. Conclusions: Sustained release of long-acting antiretroviral therapy is a new therapeutic frontier for HIV/AIDS. 3TC depot formation in monocyte-derived macrophages can be facilitated through stable subcellular internalization and slow drug release.
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20
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Agarwal HK, Chhikara BS, Doncel GF, Parang K. Synthesis and anti-HIV activities of unsymmetrical long chain dicarboxylate esters of dinucleoside reverse transcriptase inhibitors. Bioorg Med Chem Lett 2017; 27:1934-1937. [PMID: 28351588 DOI: 10.1016/j.bmcl.2017.03.031] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Revised: 03/14/2017] [Accepted: 03/15/2017] [Indexed: 11/28/2022]
Abstract
A series of 11 unsymmetrical dicarboxylate conjugates of dinucleoside reverse transcriptase inhibitors were synthesized. Three dicarboxylic acids, succinic acid, suberic acid and 1,14-tetradecandioc acid, were diesterified with either 3'-azido-2',3'-dideoxythymidine (AZT), 3'-fluoro-2',3'-dideoxythymidine (FLT), 2',3'-dideoxy-3'-thiacytidine (3TC), or 5-fluoro-2',3'-dideoxy-3'-thiacytidine (FTC). The anti-HIV activity of synthesized compounds was evaluated against HIV-1 X4 (IIIB) and R5 (BaL) viral strains in single-round infection assays. Results indicated that the tetradecandioate esters of nucleosides were more active against HIV than the corresponding parent nucleosides and nucleoside conjugates. The tetradecandioate conjugate of FLT and FTC (5) was found to be the most potent compounds with EC50 values of 47 and 75nM against X4 and R5 HIV-1 strains, respectively, while the EC50 values for the parent analogs, FLT and FTC, ranged from 700 to 3300nM.
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Affiliation(s)
- Hitesh K Agarwal
- School of Pharmacy, South University, 10 Science Court, Columbia, SC 29203, United States
| | - Bhupender S Chhikara
- Department of Chemistry, University of Delhi, Aditi Mahavidyalaya, Bawana, Delhi 110039, India
| | - Gustavo F Doncel
- CONRAD, Eastern Virginia Medical School, 601 Colley Avenue, Norfolk, VA 23507, United States
| | - Keykavous Parang
- Center for Targeted Drug Delivery, Chapman University School of Pharmacy, Irvine, CA 92618, United States.
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21
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Pemmaraju BP, Malekar S, Agarwal HK, Tiwari RK, Oh D, Doncel GF, Worthen DR, Parang K. Design, synthesis, antiviral activity, and pre-formulation development of poly-L-arginine-fatty acyl derivatives of nucleoside reverse transcriptase inhibitors. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2015; 34:1-15. [PMID: 25513860 DOI: 10.1080/15257770.2014.945649] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
The objective of this work was to design conjugates of anti-HIV nucleosides conjugated with fatty acids and cell-penetrating poly-L-arginine (polyArg) peptides. Three conjugates of polyArg cell-penetrating peptides with fatty acyl derivatives of alovudine (FLT), lamivudine (3TC), and emtricitabine (FTC) were synthesized. In general, the compounds exhibited anti-HIV activity against X4 and R5 cell-free virus with EC50 values of 1.5-16.6 μM. FLT-CO-(CH2)12-CO-(Arg)7 exhibited EC50 values of 2.9 μM and 3.1 μM against X4 and R5 cell-free virus, respectively. The FLT conjugate was selected for further preformulation studies by determination of solution state degradation and lipid solubility. The compound was found to be stable in neutral and oxidative conditions and moderately stable in heated conditions.
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Affiliation(s)
- Bhanu P Pemmaraju
- a Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy , University of Rhode Island , Kingston , RI , United States
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22
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Singh M, Bansal S, Kundu S, Bhargava P, Singh A, Motiani RK, Shyam R, Sreekanth V, Sengupta S, Bajaj A. Synthesis, Structure-Activity Relationship, and Mechanistic Investigation of Lithocholic Acid Amphiphiles for Colon Cancer Therapy. MEDCHEMCOMM 2015; 6:192-201. [PMID: 25685308 PMCID: PMC4322782 DOI: 10.1039/c4md00223g] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We report a structure-activity relationship of lithocholic acid amphiphiles for their anticancer activities against colon cancer. We synthesized ten cationic amphiphiles differing in nature of cationic charged head groups using lithocholic acid. We observed that anticancer activities of these amphiphiles against colon cancer cell lines are contingent on nature of charged head group. Lithocholic acid based amphiphile possessing piperidine head group (LCA-PIP1 ) is ~10 times more cytotoxic as compared to its precursor. Biochemical studies revealed that enhanced activity of LCA-PIP1 as compared to lithocholic acid is due to greater activation of apoptosis.LCA-PIP1 induces sub G0 arrest and causes cleavage of caspases. A single dose of lithocholic acid-piperidine derivative is enough to reduce the tumor burden by 75% in tumor xenograft model.
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Affiliation(s)
- Manish Singh
- The Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, 180 Udyog Vihar, Phase 1, Gurgaon-122016, Haryana, India
| | - Sandhya Bansal
- The Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, 180 Udyog Vihar, Phase 1, Gurgaon-122016, Haryana, India
| | - Somanath Kundu
- The Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, 180 Udyog Vihar, Phase 1, Gurgaon-122016, Haryana, India
- Manipal University, Manipal, Karnatka, India.
| | - Priyanshu Bhargava
- The Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, 180 Udyog Vihar, Phase 1, Gurgaon-122016, Haryana, India
| | - Ashima Singh
- The Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, 180 Udyog Vihar, Phase 1, Gurgaon-122016, Haryana, India
| | - Rajender K. Motiani
- The Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, 180 Udyog Vihar, Phase 1, Gurgaon-122016, Haryana, India
| | - Radhey Shyam
- National Institute of Immunology, Aruna Asif Ali Marg, New Delhi 110067, India
| | - Vedagopuram Sreekanth
- The Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, 180 Udyog Vihar, Phase 1, Gurgaon-122016, Haryana, India
- Manipal University, Manipal, Karnatka, India.
| | - Sagar Sengupta
- National Institute of Immunology, Aruna Asif Ali Marg, New Delhi 110067, India
| | - Avinash Bajaj
- The Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, 180 Udyog Vihar, Phase 1, Gurgaon-122016, Haryana, India
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23
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Yadav K, Bhargava P, Bansal S, Singh M, Gupta S, Sandhu G, Kumar S, Sreekanth V, Bajaj A. Nature of the charged head group dictates the anticancer potential of lithocholic acid-tamoxifen conjugates for breast cancer therapy. MEDCHEMCOMM 2015. [DOI: 10.1039/c4md00289j] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Anticancer drug Tamoxifen is modified to charged lithocholic acid derived amphiphile for enhanced cytotoxicity against breast cancer cells.
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Affiliation(s)
- Kavita Yadav
- Laboratory of Nanotechnology and Chemical Biology
- Regional Centre for Biotechnology
- Gurgaon-122016
- India
- Research Scholar
| | - Priyanshu Bhargava
- Laboratory of Nanotechnology and Chemical Biology
- Regional Centre for Biotechnology
- Gurgaon-122016
- India
| | - Sandhya Bansal
- Laboratory of Nanotechnology and Chemical Biology
- Regional Centre for Biotechnology
- Gurgaon-122016
- India
| | - Manish Singh
- Laboratory of Nanotechnology and Chemical Biology
- Regional Centre for Biotechnology
- Gurgaon-122016
- India
| | - Siddhi Gupta
- Department of Chemistry
- Indian Institute of Science Education and Research
- Bhopal
- India
| | - Geeta Sandhu
- Laboratory of Nanotechnology and Chemical Biology
- Regional Centre for Biotechnology
- Gurgaon-122016
- India
| | - Sandeep Kumar
- Laboratory of Nanotechnology and Chemical Biology
- Regional Centre for Biotechnology
- Gurgaon-122016
- India
| | - Vedagopuram Sreekanth
- Laboratory of Nanotechnology and Chemical Biology
- Regional Centre for Biotechnology
- Gurgaon-122016
- India
- Research Scholar
| | - Avinash Bajaj
- Laboratory of Nanotechnology and Chemical Biology
- Regional Centre for Biotechnology
- Gurgaon-122016
- India
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24
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Chhikara BS, Rao MS, Rao VK, Kumar A, Buckheit KW, Buckheit Jr. RW, Parang K. Carbocyclodipeptides as modified nucleosides: synthesis and anti-HIV activities. CAN J CHEM 2014; 92:1145-1149. [DOI: 10.1139/cjc-2014-0356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/09/2024]
Abstract
A new class of nucleoside analogues were synthesized using cyclic dipeptides and modified 2′-deoxyfuranoribose sugars to introduce flexibility by peptides in place of common nucleoside bases and to determine their biological properties. The synthesis was carried out by coupling of a protected ribose sugar with synthesized dipeptides in the presence of hexamethyldisilazane and trimethylsilyltriflate. The final products were characterized by NMR and high-resolution MS-TOF spectroscopy. The compounds were evaluated for anti-HIV activities. 1-(4-Azido-5-(hydroxymethyl)tetrahydrofuran-2-yl)-3,6-diisopropylpiperazine-2,5-dione (compound 14) containing 3- and 6-isopropyl groups in the base and 3′-azide (EC50 = 1.96 μmol/L) was the most potent compound among all of the synthesized analogs.
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Affiliation(s)
- Bhupender S. Chhikara
- Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, 7 Greenhouse Road, Kingston, RI 02881, USA
| | - M. Sudershan Rao
- Department of Chemistry, Birla Institute of Technology and Science, Pilani 333031 Rajasthan, India
| | - V. Kameshwara Rao
- Department of Chemistry, Birla Institute of Technology and Science, Pilani 333031 Rajasthan, India
| | - Anil Kumar
- Department of Chemistry, Birla Institute of Technology and Science, Pilani 333031 Rajasthan, India
| | - Karen W. Buckheit
- ImQuest BioSciences Inc., 7340 Executive Way, Suite R, Frederick, MD 21704, USA
| | | | - Keykavous Parang
- Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, 7 Greenhouse Road, Kingston, RI 02881, USA
- Department of Chemistry, Birla Institute of Technology and Science, Pilani 333031 Rajasthan, India
- Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, 9401 Jeronimo Road, Irvine, CA 92618, USA
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25
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Cho JH, Bondana L, Detorio MA, Montero C, Bassit LC, Amblard F, Coats SJ, Schinazi RF. Synthesis and antiviral evaluation of 2-amino-6-carbamoylpurine dioxolane nucleoside derivatives and their phosphoramidates prodrugs. Bioorg Med Chem 2014; 22:6665-6671. [PMID: 25458500 DOI: 10.1016/j.bmc.2014.10.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Revised: 09/24/2014] [Accepted: 10/01/2014] [Indexed: 11/26/2022]
Abstract
The synthesis of 9-(β-d-1,3-dioxolan-4-yl)2,6-diaminopurine nucleoside phosphoramidate prodrugs as well as various 2-amino-6-carbamoylpurine dioxolane derivatives and their phosphoramidates prodrugs is reported. Their ability to block HIV and HBV replication along with their cytotoxicity toward HepG2, human lymphocyte, CEM and Vero cells was also assessed.
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Affiliation(s)
- Jong Hyun Cho
- Center for AIDS Research, Laboratory of Biochemical Pharmacology, Department of Pediatrics, Emory University School of Medicine, and Veterans Affairs Medical Center, 1670 Haygood Drive, NE, Atlanta, GA 30322, USA
| | - Lavanya Bondana
- Center for AIDS Research, Laboratory of Biochemical Pharmacology, Department of Pediatrics, Emory University School of Medicine, and Veterans Affairs Medical Center, 1670 Haygood Drive, NE, Atlanta, GA 30322, USA
| | - Mervi A Detorio
- Center for AIDS Research, Laboratory of Biochemical Pharmacology, Department of Pediatrics, Emory University School of Medicine, and Veterans Affairs Medical Center, 1670 Haygood Drive, NE, Atlanta, GA 30322, USA
| | - Cathy Montero
- Center for AIDS Research, Laboratory of Biochemical Pharmacology, Department of Pediatrics, Emory University School of Medicine, and Veterans Affairs Medical Center, 1670 Haygood Drive, NE, Atlanta, GA 30322, USA
| | - Leda C Bassit
- Center for AIDS Research, Laboratory of Biochemical Pharmacology, Department of Pediatrics, Emory University School of Medicine, and Veterans Affairs Medical Center, 1670 Haygood Drive, NE, Atlanta, GA 30322, USA
| | - Franck Amblard
- Center for AIDS Research, Laboratory of Biochemical Pharmacology, Department of Pediatrics, Emory University School of Medicine, and Veterans Affairs Medical Center, 1670 Haygood Drive, NE, Atlanta, GA 30322, USA
| | - Steven J Coats
- RFS Pharma, LLC, 1860 Montreal Road, Tucker, GA 30084, USA
| | - Raymond F Schinazi
- Center for AIDS Research, Laboratory of Biochemical Pharmacology, Department of Pediatrics, Emory University School of Medicine, and Veterans Affairs Medical Center, 1670 Haygood Drive, NE, Atlanta, GA 30322, USA
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26
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Pemmaraju B, Agarwal HK, Oh D, Buckheit KW, Buckheit RW, Tiwari R, Parang K. Synthesis and Biological Evaluation of 5'- O-Dicarboxylic Fatty Acyl Monoester Derivatives of Anti-HIV Nucleoside Reverse Transcriptase Inhibitors. Tetrahedron Lett 2014; 55:1983-1986. [PMID: 24791029 PMCID: PMC4001930 DOI: 10.1016/j.tetlet.2014.02.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
A number of 5'-O-dicarboxylic fatty acyl monoester derivatives of 3'-azido-3'-deoxythymidine (zidovudine, AZT), 2',3'-didehydro-2',3'-dideoxythymidine (stavudine, d4T), and 3'-fluoro-3'-deoxythymidine (alovudine, FLT) were synthesized to improve the lipophilicity and potentially the cellular delivery of parent polar 2', 3'-dideoxynucleoside (ddN) analogues. The compounds were evaluated for their anti-HIV activity. Three different fatty acids with varying chain length of suberic acid (octanedioic acid), sebacic acid (decanedioic acid), and dodecanedioic acid were used for the conjugation with the nucleosides. The compounds were evaluated for anti-HIV activity and cytotoxicity. All dicarboxylic ester conjugates of nucleosides exhibited significantly higher anti-HIV activity than that of the corresponding parent nucleoside analogs. Among all the tested conjugates, 5'-O-suberate derivative of AZT (EC50 = 0.10 nM) was found to be the most potent compound and showed 80-fold higher anti-HIV activity than AZT without any significant toxicity (TC50 > 500 nM).
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Affiliation(s)
- Bhanu Pemmaraju
- Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, RI 02881, United States
| | - Hitesh K Agarwal
- Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, RI 02881, United States
| | - Donghoon Oh
- Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, RI 02881, United States
| | - Karen W. Buckheit
- ImQuest BioSciences Inc. 7340 Executive Way, Suite R, Frederick, MD, 21704, United States
| | - Robert W. Buckheit
- ImQuest BioSciences Inc. 7340 Executive Way, Suite R, Frederick, MD, 21704, United States
| | - Rakesh Tiwari
- Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, RI 02881, United States
- School of Pharmacy, Chapman University, Orange, CA, 92618, United States
| | - Keykavous Parang
- Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, RI 02881, United States
- School of Pharmacy, Chapman University, Orange, CA, 92618, United States
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27
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Kamaraj C, Rahuman AA, Roopan SM, Bagavan A, Elango G, Zahir AA, Rajakumar G, Jayaseelan C, Santhoshkumar T, Marimuthu S, Kirthi AV. Bioassay-guided isolation and characterization of active antiplasmodial compounds from Murraya koenigii extracts against Plasmodium falciparum and Plasmodium berghei. Parasitol Res 2014; 113:1657-72. [PMID: 24638906 DOI: 10.1007/s00436-014-3810-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Accepted: 02/02/2014] [Indexed: 12/21/2022]
Abstract
Malaria is an overwhelming impact in the poorest countries in the world due to their prevalence, virulence and drug resistance ability. Currently, there is inadequate armoury of drugs for the treatment of malaria. This underscores the continuing need for the discovery and development of new effective and safe antimalarial drugs. To evaluate the in vitro and in vivo antimalarial activity of the leaf ethyl acetate extract of Murraya koenigii, bioassay-guided chromatographic fractionation was employed for the isolation and purification of antimalarial compounds. The in vitro antimalarial activity was assayed by the erythrocytic stages of chloroquine-sensitive strain of Plasmodium falciparum (3D7) in culture using the fluorescence-based SYBR Green I assay. The in vivo assay was done by administering mice infected with Plasmodium berghei (NK65) four consecutive daily doses of the extracts through oral route following Peter's 4-day curative standard test. The percentage suppression of parasitaemia was calculated for each dose level by comparing the parasitaemia in untreated control with those of treated mice. Cytotoxicity was determined against HeLa cells using MTT assay. Histopathology was studied in kidney, liver and spleen of isolated compound-treated Swiss albino mice. The leaf crude ethyl acetate extract of M. koenigii showed good in vitro antiplasmodial activity against P. falciparum. The in vivo test of the leaf crude ethyl acetate extract (600 mg/kg) showed reduced malaria parasitaemia by 86.6% against P. berghei in mice. Bioassay-guided fractionation of the leaf ethyl acetate extract of M. koenigii led to the isolation of two purified fractions C3B2 (2.84 g) and C3B4 (1.97 g). The purified fractions C3B2 and C3B4 were found to be active with IC50 values of 10.5 ± 0.8 and 8.25 ± 0.2 μg/mL against P. falciparum, and in vivo activity significantly reduced parasitaemia by 82.6 and 88.2% at 100 mg/kg/body weight on day 4 against P. berghei, respectively. The isolated fractions C3B2 and C3B4 were monitored by thin-layer chromatography until a single spot was obtained with R f values of 0.36 and 0.52, respectively. The pure compounds obtained in the present investigation were subjected to UV-visible spectroscopy, Fourier transformer infrared spectroscopy, 1D and 2D (1)H-Nuclear magnetic resonance (NMR), (13)C NMR, DEPT, COSY and Mass spectral analysis. Based on the spectral analysis, it is concluded that the isolated compounds were myristic acid (C3B2) and β-caryophyllene (C3B4). The cytotoxic effect of myristic acid and β-caryophyllene showed the TC50 values of >100 and 80.5 μg/mL, respectively against HeLa cell line. The histopathology study showed that protection against nephrotoxicity of kidney, hepatic damage of liver and splenocytes protection in spleen was achieved with the highest dose tested at 100 mg/kg/body weight. The present study provides evidence of antiplasmodial compounds from M. koenigii and is reported for the first time.
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Affiliation(s)
- Chinnaperumal Kamaraj
- Unit of Nanotechnology and Bioactive Natural Products, Post Graduate and Research Department of Zoology, C. Abdul Hakeem College, Melvisharam, 632 509, Vellore District, Tamil Nadu, India
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28
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Wang J, Sánchez-Roselló M, Aceña JL, del Pozo C, Sorochinsky AE, Fustero S, Soloshonok VA, Liu H. Fluorine in Pharmaceutical Industry: Fluorine-Containing Drugs Introduced to the Market in the Last Decade (2001–2011). Chem Rev 2013; 114:2432-506. [DOI: 10.1021/cr4002879] [Citation(s) in RCA: 3202] [Impact Index Per Article: 291.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Jiang Wang
- Key
Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China
| | - María Sánchez-Roselló
- Department
of Organic Chemistry, Faculty of Pharmacy, University of Valencia, Av. Vicente Andrés Estellés, 46100 Burjassot, Valencia, Spain
- Laboratorio
de Moléculas Orgánicas, Centro de Investigación Príncipe Felipe, C/ Eduardo Primo Yúfera 3, 46012 Valencia, Spain
| | - José Luis Aceña
- Department
of Organic Chemistry I, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel Lardizábal 3, 20018 San Sebastian, Spain
| | - Carlos del Pozo
- Department
of Organic Chemistry, Faculty of Pharmacy, University of Valencia, Av. Vicente Andrés Estellés, 46100 Burjassot, Valencia, Spain
| | - Alexander E. Sorochinsky
- Department
of Organic Chemistry I, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel Lardizábal 3, 20018 San Sebastian, Spain
- IKERBASQUE, Basque Foundation for Science, Alameda Urquijo, 36-5 Plaza Bizkaia, 48011 Bilbao, Spain
- Institute
of Bioorganic Chemistry and Petrochemistry, National Academy of Sciences of Ukraine, Murmanska Street 1, 02660 Kyiv-94, Ukraine
| | - Santos Fustero
- Department
of Organic Chemistry, Faculty of Pharmacy, University of Valencia, Av. Vicente Andrés Estellés, 46100 Burjassot, Valencia, Spain
- Laboratorio
de Moléculas Orgánicas, Centro de Investigación Príncipe Felipe, C/ Eduardo Primo Yúfera 3, 46012 Valencia, Spain
| | - Vadim A. Soloshonok
- Department
of Organic Chemistry I, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel Lardizábal 3, 20018 San Sebastian, Spain
- IKERBASQUE, Basque Foundation for Science, Alameda Urquijo, 36-5 Plaza Bizkaia, 48011 Bilbao, Spain
| | - Hong Liu
- Key
Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China
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29
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Shirazi AN, Oh D, Tiwari RK, Sullivan B, Gupta A, Bothun GD, Parang K. Peptide amphiphile containing arginine and fatty acyl chains as molecular transporters. Mol Pharm 2013; 10:4717-27. [PMID: 24215132 PMCID: PMC3873380 DOI: 10.1021/mp400539r] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Peptide amphiphiles (PAs) are promising tools for the intracellular delivery of numerous drugs. PAs are known to be biodegradable systems. Here, four PA derivatives containing arginine and lysine conjugated with fatty acyl groups with different chain lengths, namely, PA1: R-K(C14)-R, PA2: R-K(C16)-R, PA3: K(C14)-R-K(C14), and PA4: K(C16)-R-K(C16), where C16 = palmitic acid and C14 = myristic acid, were synthesized through Fmoc chemistry. Flow cytometry studies showed that, among all synthesized PAs, only K(C16)-R-K(C16), PA4 was able to enhance the cellular uptake of a fluorescence-labeled anti-HIV drug 2',3'-dideoxy-3'-thiacythidine (F'-3TC, F' = fluorescein) and a biologically important phosphopeptide (F'-PEpYLGLD) in human leukemia cells (CCRF-CEM) after 2 h incubation. For example, the cellular uptake of F'-3TC and F'-PEpYLGLD was enhanced approximately 7.1- and 12.6-fold in the presence of the PA4 compared to those of the drugs alone. Confocal microscopy of F'-3TC and F'-PEpYLGLD loaded PA4 in live cells showed significantly higher intracellular localization than the drug alone in human ovarian cells (SK-OV-3) after 2 h incubation. The high-performance liquid chromatography (HPLC) results showed that loading of Dox by the peptide amphiphile was 56% after 24 h. The loaded Dox was released (34%) within 48 h intracellularly. The circular dichrosim (CD) results exhibited that the secondary structure of the peptide was changed upon interactions with Dox. Mechanistic studies revealed that endocytosis is the major pathway of the internalization. These studies suggest that PAs containing the appropriate sequence of amino acids, chain length, charge, and hydrophobicity can be used as cellular delivery tools for transporting drugs and biomolecules.
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Affiliation(s)
- Amir Nasrolahi Shirazi
- Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, Rhode Island 02881, United States
- School of Pharmacy, Chapman University, Orange, California 92866, United States
| | - Donghoon Oh
- Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, Rhode Island 02881, United States
| | - Rakesh Kumar Tiwari
- Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, Rhode Island 02881, United States
- School of Pharmacy, Chapman University, Orange, California 92866, United States
| | - Brian Sullivan
- Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, Rhode Island 02881, United States
| | - Anju Gupta
- Department of Biology and Chemistry, Department of Engineering, College of Arts and Sciences, Texas A&M International University, Laredo, Texas 78041, United States
| | - Geoffrey D. Bothun
- Department of Chemical Engineering, College of Engineering, University of Rhode Island, Kingston, Rhode Island 02881, United States
| | - Keykavous Parang
- Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, Rhode Island 02881, United States
- School of Pharmacy, Chapman University, Orange, California 92866, United States
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Sreekanth V, Bansal S, Motiani RK, Kundu S, Muppu SK, Majumdar TD, Panjamurthy K, Sengupta S, Bajaj A. Design, synthesis, and mechanistic investigations of bile acid-tamoxifen conjugates for breast cancer therapy. Bioconjug Chem 2013; 24:1468-84. [PMID: 23909664 DOI: 10.1021/bc300664k] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
We have synthesized two series of bile acid tamoxifen conjugates using three bile acids lithocholic acid (LCA), deoxycholic acid (DCA), and cholic acid (CA). These bile acid-tamoxifen conjugates possess 1, 2, and 3 tamoxifen molecules attached to hydroxyl groups of bile acids having free acid and amine functionalities at the tail region of bile acids. The in vitro anticancer activities of these bile acid-tamoxifen conjugates show that the free amine headgroup based cholic acid-tamoxifen conjugate (CA-Tam3-Am) is the most potent anticancer conjugate as compared to the parent drug tamoxifen and other acid and amine headgroup based bile acid-tamoxifen conjugates. The cholic acid-tamoxifen conjugate (CA-Tam3-Am) bearing three tamoxifen molecules shows enhanced anticancer activities in both estrogen receptor +ve and estrogen receptor -ve breast cancer cell lines. The enhanced anticancer activity of CA-Tam3-Am is due to more favorable irreversible electrostatic interactions followed by intercalation of these conjugates in hydrophobic core of membrane lipids causing increase in membrane fluidity. Annexin-FITC based FACS analysis showed that cells undergo apoptosis, and cell cycle analysis showed the arrest of cells in sub G0 phase. ROS assays showed a high amount of generation of ROS independent of ER status of the cell line indicating changes in mitochondrial membrane fluidity upon the uptake of the conjugate that further leads to the release of cytochrome c, a direct and indirect regulator of ROS. The mechanistic studies for apoptosis using PCR and western analysis showed apoptotsis by intrinsic and extrinsic pathways in ER +ve MCF-7 cells and by only an intrinsic pathway in ER -ve cells. In vivo studies in the 4T1 tumor model showed that CA-Tam3-Am is more potent than tamoxifen. These studies showed that bile acids provide a new scaffold for high drug loading and that their anticancer activities strongly depend on charge and hydrophobicity of lipid-drug conjugates.
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Affiliation(s)
- Vedagopuram Sreekanth
- The Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology , 180 Udyog Vihar, Phase 1, Gurgaon-122016, Haryana, India
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Nasrolahi Shirazi A, Tiwari RK, Oh D, Sullivan B, McCaffrey K, Mandal D, Parang K. Surface decorated gold nanoparticles by linear and cyclic peptides as molecular transporters. Mol Pharm 2013; 10:3137-51. [PMID: 23834324 DOI: 10.1021/mp400199e] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Gold nanoparticles (AuNPs) were synthesized in situ in a green and rapid method from the reaction of reducing linear and cyclic peptides containing tryptophan and lysine residues, (KW)5 and cyclic [KW]5, with an aqueous solution of HAuCl4 and were evaluated as cellular nanodrug delivery systems. The cyclic or linear nature of the peptide was found to determine the morphology and size of the formed peptide-AuNPs and their in vitro molecular transporting efficiency. While cyclic [KW]5-AuNPs formed sponge-like agglomerates, linear (KW)5-AuNPs demonstrated ball-shaped structures. A comparative flow cytometry study showed that the cellular uptake of fluorescence-labeled anti-HIV drugs (emtricitabine (FTC) and lamivudine (3TC)) in human leukemia (CCRF-CEM) cells, and a negatively charged cell-impermeable phosphopeptide (GpYEEI) in human ovarian adecarcinoma (SK-OV-3) cells was significantly higher in the presence of cyclic [KW]5-AuNPs than that of linear (KW)5-AuNPs, parent cyclic [KW]5, and linear (KW)5 peptides. For example, the cellular uptake of F'-GpYEEI was enhanced 12.8-fold by c[KW]5-AuNPs. Confocal microscopy revealed the localization of fluorescence-labeled-3TC in the presence of c[KW]5-AuNPs mostly in nucleus in SK-OV-3 cells after 1 h. On the other hand, l(KW)5-AuNPs delivered fluorescence-labeled-3TC in cytoplasm. These data suggest that noncell penetrating peptides can be converted to efficient molecular transporters through peptide-capped AuNPs formation.
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Affiliation(s)
- Amir Nasrolahi Shirazi
- Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island , Kingston, Rhode Island 02881, United States
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