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Roy S, Raj KC H, Adhikary S, Erickson AN, Alam MA. Efficient Synthesis of Thiazole-Fused Bisnoralcohol Derivatives as Potential Therapeutic Agents. ACS OMEGA 2024; 9:23283-23293. [PMID: 38854539 PMCID: PMC11154900 DOI: 10.1021/acsomega.3c09721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 01/21/2024] [Accepted: 05/09/2024] [Indexed: 06/11/2024]
Abstract
Thiazole derivatives are known for a wide range of therapeutic properties. Bisnoralcohol is an inexpensive natural product obtained by the biodegradation of sterols. This article describes an efficient synthesis of a library of thiazole-fused bisnoralcohol derivatives. These novel compounds have been studied for their antineoplastic and antibacterial properties, which led to the discovery of hit compounds with therapeutic potential. The antibacterial compound is noncytotoxic and nonhemolytic against cancer cell lines and sheep red blood cells, respectively. Several of the antineoplastic compounds showed activity against human cancer cell lines with growth inhibition at submicromolar concentration.
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Affiliation(s)
- Subrata Roy
- Department
of Chemistry and Physics, College of Sciences and Mathematics, Arkansas State University, Jonesboro, Arkansas 70401, United States
- Enviromental
Sciences Program, Arkansas State University, Jonesboro, Arkansas 72401, United States
| | - Hansa Raj KC
- Molecular
Biosciences Program, Arkansas State University, Jonesboro, Arkansas 72401, United States
| | - Sanjay Adhikary
- Department
of Chemistry and Physics, College of Sciences and Mathematics, Arkansas State University, Jonesboro, Arkansas 70401, United States
| | - Alexander N. Erickson
- Department
of Chemistry, The University of Memphis, Memphis, Tennessee 38152, United States
| | - Mohammad Abrar Alam
- Department
of Chemistry and Physics, College of Sciences and Mathematics, Arkansas State University, Jonesboro, Arkansas 70401, United States
- Enviromental
Sciences Program, Arkansas State University, Jonesboro, Arkansas 72401, United States
- Molecular
Biosciences Program, Arkansas State University, Jonesboro, Arkansas 72401, United States
- Arkansas
Biosciences Institute, Arkansas State University, Jonesboro, Arkansas 72401, United States
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2
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Berger AG, DeLorenzo C, Vo C, Kaskow JA, Nabar N, Hammond PT. Poly(β-aminoester) Physicochemical Properties Govern the Delivery of siRNA from Electrostatically Assembled Coatings. Biomacromolecules 2024; 25:2934-2952. [PMID: 38687965 PMCID: PMC11117021 DOI: 10.1021/acs.biomac.4c00062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
Localized short interfering RNA (siRNA) therapy has the potential to drive high-specificity molecular-level treatment of a variety of disease states. Unfortunately, effective siRNA therapy suffers from several barriers to its intracellular delivery. Thus, drug delivery systems that package and control the release of therapeutic siRNAs are necessary to overcome these obstacles to clinical translation. Layer-by-layer (LbL) electrostatic assembly of thin film coatings containing siRNA and protonatable, hydrolyzable poly(β-aminoester) (PBAE) polymers is one such drug delivery strategy. However, the impact of PBAE physicochemical properties on the transfection efficacy of siRNA released from LbL thin film coatings has not been systematically characterized. In this study, we investigate the siRNA transfection efficacy of four structurally similar PBAEs in vitro. We demonstrate that small changes in structure yield large changes in physicochemical properties, such as hydrophobicity, pKa, and amine chemical structure, driving differences in the interactions between PBAEs and siRNA in polyplexes and in LbL thin film coatings for wound dressings. In our polymer set, Poly3 forms the most stable interactions with siRNA (Keff,w/w = 0.298) to slow release kinetics and enhance transfection of reporter cells in both colloidal and thin film coating approaches. This is due to its unique physiochemical properties: high hydrophobicity (clog P = 7.86), effective pKa closest to endosomal pH (pKa = 6.21), and high cooperativity in buffering (nhill = 7.2). These properties bestow Poly3 with enhanced endosomal buffering and escape properties. Taken together, this work elucidates the connections between small changes in polymer structure, emergent properties, and polyelectrolyte theory to better understand PBAE transfection efficacy.
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Affiliation(s)
- Adam G. Berger
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
- Institute for Soldier Nanotechnologies, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Charles DeLorenzo
- Institute for Soldier Nanotechnologies, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Chau Vo
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
- Institute for Soldier Nanotechnologies, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Justin A. Kaskow
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Namita Nabar
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
- Broad Institute of Harvard and MIT, Cambridge, MA, 02142, USA
| | - Paula T. Hammond
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
- Institute for Soldier Nanotechnologies, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
- Broad Institute of Harvard and MIT, Cambridge, MA, 02142, USA
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3
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Mir IH, Anilkumar AS, Guha S, Mohanty AK, Suresh Kumar M, Sujatha V, Ramesh T, Thirunavukkarasu C. Elucidation of 7,8-dihydroxy flavone in complexing with the oxidative stress-inducing enzymes, its impact on radical quenching and DNA damage: an in silico and in vitro approach. J Biomol Struct Dyn 2024; 42:4048-4063. [PMID: 37261742 DOI: 10.1080/07391102.2023.2218932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 05/21/2023] [Indexed: 06/02/2023]
Abstract
Oxidative stress (OS) has been attributed to the progression of various disorders, including cancer, diabetes, and cardiovascular diseases. Several antioxidant compounds and free radical quenchers have been shown to mitigate oxidative stress. However, large-scale randomized controlled trials of such compounds on chronic disease aversion have yielded paradoxical and disappointing results due to the constrained cognizance of their oxidative mechanisms and therapeutic targets. The current study sought to identify the potential therapeutic targets of 7,8-Dihydroxyflavone (7,8-DHF) by analyzing its interactions with the enzymes implicated in oxidative stress and also to explore its radicle quenching potential and prophylactic impact on the H2O2-induced DNA damage. Through the in silco approach, we investigated the antioxidant potential of 7,8-DHF by evaluating its interactions with the human oxidative stress-inducing enzymes such as myeloperoxidase (MPO), NADPH oxidase (NOX), nitric oxide synthase (NOS), and xanthine oxidase (XO) and a comparative analysis of those interactions with known antioxidants (Ascorbic acid, Melatonin, Tocopherol) used as controls. The best-scoring complex was adopted for the simulation analysis in investigating protein-ligand conformational dynamics. The in vitro radicle quenching potential was evaluated by performing a spectrum of antioxidant assays, and radical quenching was observed in a dose-dependent fashion with IC50 values of < 60 µM/mL. Further, we probed its anti-hemolytic potential and prophylactic impact in avian erythrocytes subjected to H2O2-induced hemolysis and DNA damage by implementing hemolysis and comet assays. The protective effect was more pronounced at higher concentrations of the drug.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Ishfaq Hassan Mir
- Department of Biochemistry and Molecular Biology, Pondicherry University, Puducherry, India
| | | | - Shreyoshi Guha
- Department of Biochemistry and Molecular Biology, Pondicherry University, Puducherry, India
| | | | | | - Venugopal Sujatha
- DST-Mobility Fellow, Department of Chemistry, Pondicherry University, Puducherry, India
- Department of Chemistry, Periyar University, Salem, Tamil Nadu, India
| | - Thiyagarajan Ramesh
- Department of Basic Medical Sciences, College of Medicine, Prince Sattam Bin Abdulaziz University, Al-Kharj, Saudi Arabia
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4
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Aboyadak IM, Abdel-Tawwab M, Ali NG. Identification and florfenicol-treatment of pseudomonas putida infection in gilthead seabream (Sparus aurata) fed on tilapia-trash-feed. BMC Vet Res 2024; 20:156. [PMID: 38664683 PMCID: PMC11044311 DOI: 10.1186/s12917-024-04004-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Accepted: 04/04/2024] [Indexed: 04/28/2024] Open
Abstract
The present study aimed to determine the major cause of the high mortality affecting farmed gilthead seabream (Sparus aurata) and controlling this disease condition. Fifteen diseased S. aurata were sampled from a private fish farm located at Eldeba Triangle, Damietta, fish showed external skin hemorrhages, and ulceration. Bacterial isolates retrieved from the diseased fish were identified biochemically as Pseudomonas putida and then confirmed by phylogenetic analysis of the 16 S rRNA gene sequence. P. putida was also isolated from three batches of tilapia-trash feed given to S. aurata. Biofilm and hemolytic assay indicated that all P. putida isolates produced biofilm, but 61.11% can haemolyse red blood cells. Based on the antibiotic susceptibility test results, P. putida was sensitive to florfenicol with minimum inhibitory concentrations ranging between 0.25 and 1.0 µg mL- 1, but all isolates were resistant to ampicillin and sulfamethoxazole-trimethoprim. Pathogenicity test revealed that P. putida isolate (recovered from the tilapia-trash feed) was virulent for S. aurata with LD50 equal to 4.67 × 107 colony forming unit (CFU) fish- 1. After intraperitoneal (IP) challenge, fish treated with 10 mg kg- 1 of florfenicol showed 16.7% mortality, while no mortality was recorded for the fish group that received 20 mg kg- 1. The non-treated fish group showed 46.7% mortality after bacterial challenge. HPLC analysis of serum florfenicol levels reached 1.07 and 2.52 µg mL- 1 at the 5th -day post-drug administration in the fish groups received 10 and 20 mg kg- 1, respectively. In conclusion, P. putida was responsible for the high mortality affecting cultured S. aurata, in-feed administration of florfenicol (20 mg kg- 1) effectively protected the challenged fish.
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Affiliation(s)
| | - Mohsen Abdel-Tawwab
- Department of Fish Biology and Ecology, Central Laboratory for Aquaculture Research, Agricultural Research Center, Abbassa, Abo-Hammad, Sharqia, 44662, Egypt
| | - Nadia G Ali
- National Institute of Oceanography and Fisheries, NIOF, Cairo, Egypt.
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5
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Behera LM, Gupta PK, Ghosh M, Shadangi S, Rana S. A Rationally Designed Synthetic Antiviral Peptide Binder Targeting the Receptor-Binding Domain of SARS-CoV-2. J Phys Chem B 2024. [PMID: 38657271 DOI: 10.1021/acs.jpcb.4c00241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
The severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2), a novel coronavirus, is the causative agent responsible for the spread of the COVID19 pandemic across the globe. The global impact of the COVID19 pandemic, the successful approval of vaccines for controlling the pandemic, and the further resurgence of COVID19 necessitate the exploration and validation of alternative therapeutic avenues targeting SARS-CoV-2. The initial entry and further invasion by SARS-CoV-2 require strong protein-protein interactions (PPIs) between the receptor-binding domain (RBD) of the SARS-CoV-2 spike protein and the human angiotensin-converting enzyme 2 (ACE2) receptors expressed on the cell surfaces of various tissues. In principle, disruption of the PPIs between the RBD of SARS-CoV-2 and the ACE2 receptor by designer peptides with optimized pharmacology appears to be an ideal choice for potentially preventing viral entry with minimal immunogenicity. In this context, the current study describes a short, synthetic designer peptide (codenamed SR16, ≤18 aa, molecular weight ≤2.5 kDa), which has a few noncoded amino acids, demonstrates a helical conformation in solution, and also engages the RBD of SARS-CoV-2 through a high-affinity interaction, as judged from a battery of biophysical studies. Further, the designer peptide demonstrates resistance to trypsin degradation, appears to be nontoxic to mammalian cells, and also does not induce hemolysis in freshly isolated human erythrocytes. In summary, SR16 appears to be an ideal peptide binder targeting the RBD of SARS-CoV-2, which has the potential for further optimization and development as an antiviral agent targeting SARS-CoV-2.
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Affiliation(s)
- Lalita Mohan Behera
- Chemical Biology Laboratory, School of Basic Sciences, Indian Institute of Technology Bhubaneswar, Bhubaneswar 752050, Odisha, India
| | - Pulkit Kr Gupta
- Chemical Biology Laboratory, School of Basic Sciences, Indian Institute of Technology Bhubaneswar, Bhubaneswar 752050, Odisha, India
| | - Manaswini Ghosh
- Chemical Biology Laboratory, School of Basic Sciences, Indian Institute of Technology Bhubaneswar, Bhubaneswar 752050, Odisha, India
| | - Sucharita Shadangi
- Chemical Biology Laboratory, School of Basic Sciences, Indian Institute of Technology Bhubaneswar, Bhubaneswar 752050, Odisha, India
| | - Soumendra Rana
- Chemical Biology Laboratory, School of Basic Sciences, Indian Institute of Technology Bhubaneswar, Bhubaneswar 752050, Odisha, India
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6
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Frota HF, Lorentino CMA, Barbosa PF, Ramos LS, Barcellos IC, Giovanini L, Souza LOP, Oliveira SSC, Abosede OO, Ogunlaja AS, Pereira MM, Branquinha MH, Santos ALS. Antifungal potential of the new copper(II)-theophylline/1,10-phenanthroline complex against drug-resistant Candida species. Biometals 2024; 37:321-336. [PMID: 37917351 DOI: 10.1007/s10534-023-00549-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 10/03/2023] [Indexed: 11/04/2023]
Abstract
Candida spp. are the commonest fungal pathogens worldwide. Antifungal resistance is a problem that has prompted the discovery of novel anti-Candida drugs. Herein, 25 compounds, some of them containing copper(II), cobalt(II) and manganese(II) ions, were initially evaluated for inhibiting the growth of reference strains of Candida albicans and Candida tropicalis. Eight (32%) of the compounds inhibited the proliferation of these yeasts, displaying minimum inhibitory concentrations (MICs) ranging from 31.25 to 250 μg/mL and minimum fungicidal concentration (MFCs) from 62.5 to 250 μg/mL. Drug-likeness/pharmacokinetic calculated by SwissADME indicated that the 8 selected compounds were suitable for use as topical drugs. The complex CTP, Cu(theo)2phen(H2O).5H2O (theo = theophylline; phen = 1,10-phenanthroline), was chosen for further testing against 10 medically relevant Candida species that were resistant to fluconazole/amphotericin B. CTP demonstrated a broad spectrum of action, inhibiting the growth of all 20 clinical fungal isolates, with MICs from 7.81 to 62.5 μg/mL and MFCs from 15.62 to 62.5 μg/mL. Conversely, CTP did not cause lysis in erythrocytes. The toxicity of CTP was evaluated in vivo using Galleria mellonella and Tenebrio molitor. CTP had no or low levels of toxicity at doses ranging from 31.25 to 250 μg/mL for 5 days. After 24 h of treatment, G. mellonella larvae exhibited high survival rates even when exposed to high doses of CTP (600 μg/mL), with the 50% cytotoxic concentration calculated as 776.2 μg/mL, generating selectivity indexes varying from 12.4 to 99.4 depending on each Candida species. These findings suggest that CTP could serve as a potential drug to treat infections caused by Candida species resistant to clinically available antifungals.
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Affiliation(s)
- Heloisa F Frota
- Laboratório de Estudos Avançados de Microrganismos Emergentes e Resistentes (LEAMER), Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes (IMPG), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, 21941-901, Brazil
- Programa de Pós-Graduação Em Bioquímica (PPGBq), Instituto de Química, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, 21941-909, Brazil
| | - Carolline M A Lorentino
- Laboratório de Estudos Avançados de Microrganismos Emergentes e Resistentes (LEAMER), Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes (IMPG), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, 21941-901, Brazil
| | - Pedro F Barbosa
- Laboratório de Estudos Avançados de Microrganismos Emergentes e Resistentes (LEAMER), Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes (IMPG), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, 21941-901, Brazil
| | - Lívia S Ramos
- Laboratório de Estudos Avançados de Microrganismos Emergentes e Resistentes (LEAMER), Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes (IMPG), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, 21941-901, Brazil
| | - Iuri C Barcellos
- Laboratório de Estudos Avançados de Microrganismos Emergentes e Resistentes (LEAMER), Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes (IMPG), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, 21941-901, Brazil
- Instituto Federal de Educação, Ciência e Tecnologia do Rio de Janeiro (IFRJ), Rio de Janeiro, RJ, 20270-220, Brazil
| | - Lucas Giovanini
- Laboratório de Estudos Avançados de Microrganismos Emergentes e Resistentes (LEAMER), Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes (IMPG), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, 21941-901, Brazil
| | - Lucieri O P Souza
- Laboratório de Estudos Avançados de Microrganismos Emergentes e Resistentes (LEAMER), Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes (IMPG), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, 21941-901, Brazil
| | - Simone S C Oliveira
- Laboratório de Estudos Avançados de Microrganismos Emergentes e Resistentes (LEAMER), Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes (IMPG), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, 21941-901, Brazil
| | - Olufunso O Abosede
- Department of Chemistry, Federal University Otuoke, P.M.B 126, Yenagoa, Bayelsa State, Nigeria
- Department of Chemistry, Nelson Mandela University, PO Box 77000, Port Elizabeth, 6031, South Africa
| | - Adeniyi S Ogunlaja
- Department of Chemistry, Nelson Mandela University, PO Box 77000, Port Elizabeth, 6031, South Africa
| | - Matheus M Pereira
- Chemical Engineering Processes and Forest Products Research Centre (CIEPQPF), Department of Chemical Engineering, University of Coimbra, 3030-790, Coimbra, Portugal
| | - Marta H Branquinha
- Laboratório de Estudos Avançados de Microrganismos Emergentes e Resistentes (LEAMER), Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes (IMPG), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, 21941-901, Brazil
- Rede Micologia RJ - Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ), Rio de Janeiro, 21941-901, Brazil
| | - André L S Santos
- Laboratório de Estudos Avançados de Microrganismos Emergentes e Resistentes (LEAMER), Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes (IMPG), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, 21941-901, Brazil.
- Programa de Pós-Graduação Em Bioquímica (PPGBq), Instituto de Química, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, 21941-909, Brazil.
- Rede Micologia RJ - Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ), Rio de Janeiro, 21941-901, Brazil.
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7
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Dasanayake GS, Hamadani CM, Singh G, Kumar Misra S, Vashisth P, Sharp JS, Adhikari L, Baker GA, Tanner EEL. Imidazolium-based zwitterionic liquid-modified PEG-PLGA nanoparticles as a potential intravenous drug delivery carrier. NANOSCALE 2024; 16:5584-5600. [PMID: 38410026 DOI: 10.1039/d3nr06349f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
Zwitterionic-based systems offer promise as next-generation drug delivery biomaterials capable of enhancing nanoparticle (NP) stimuli-responsiveness, biorecognition, and biocompatibility. Further, imidazole-functionalized amphiphilic zwitterions are able to readily bind to various biological macromolecules, enabling antifouling properties for enhanced drug delivery efficacy and bio-targeting. Herein, we describe structurally tuned zwitterionic imidazole-based ionic liquid (ZIL)-coated PEG-PLGA nanoparticles made with sonicated nanoprecipitation. Upon ZIL surface modification, the hydrodynamic radius increased by nearly 20 nm, and the surface charge significantly shifted closer to neutral. 1H NMR spectra suggests that the amount of ZIL on the nanoparticle surface is controlled by the structure of the ZIL and that the assembly occurs as a result of non-covalent interactions of ZIL-coated nanoparticle with the polymer surface. These nanoparticle-zwitterionic liquid (ZIL) constructs demonstrate selective affinity towards red blood cells in whole mouse blood and show relatively low human hemolysis at ∼5%. Additionally, we observe higher nanoparticle accumulation of ZIL-NPs compared with unmodified NP controls in human triple-negative breast cancer cells (MDA-MB-231). Furthermore, although the ZIL shows similar protein adsorption by SDS-PAGE, LC-MS/MS protein analysis data demonstrate a difference in the relative abundance and depletion of proteins in mouse and human serum. Hence, we show that ZIL-coated nanoparticles provide a new potential platform to enhance RBC-based drug delivery systems for cancer treatments.
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Affiliation(s)
- Gaya S Dasanayake
- Department of Chemistry and Biochemistry, University of Mississippi, University, MS 38677, USA.
| | - Christine M Hamadani
- Department of Chemistry and Biochemistry, University of Mississippi, University, MS 38677, USA.
| | - Gagandeep Singh
- Department of Chemistry and Biochemistry, University of Mississippi, University, MS 38677, USA.
| | - Sandeep Kumar Misra
- Department of BioMolecular Sciences, University of Mississippi, University, MS 38677, USA
| | - Priyavrat Vashisth
- Department of Chemistry and Biochemistry, University of Mississippi, University, MS 38677, USA.
| | - Joshua S Sharp
- Department of Chemistry and Biochemistry, University of Mississippi, University, MS 38677, USA.
- Department of BioMolecular Sciences, University of Mississippi, University, MS 38677, USA
| | - Laxmi Adhikari
- Department of Chemistry, University of Missouri, Columbia, MO, 65211, USA
| | - Gary A Baker
- Department of Chemistry, University of Missouri, Columbia, MO, 65211, USA
| | - Eden E L Tanner
- Department of Chemistry and Biochemistry, University of Mississippi, University, MS 38677, USA.
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8
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Le-Vinh B, Le NMN, Phan TNQ, Lam HT, Bernkop-Schnürch A. Effects of excipients on the interactions of self-emulsifying drug delivery systems with human blood plasma and plasma membranes. Drug Deliv Transl Res 2024:10.1007/s13346-024-01541-w. [PMID: 38411893 DOI: 10.1007/s13346-024-01541-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/07/2024] [Indexed: 02/28/2024]
Abstract
Due to its versatility in formulation and manufacturing, self-emulsifying drug delivery systems (SEDDS) can be used to design parenteral formulations. Therefore, it is necessary to understand the effects of excipients on the behavior of SEDDS formulations upon parenteral administration, particularly their interactions with blood plasma and cell membranes. In this study, we prepared three neutrally charged SEDDS formulations composed of medium-chain triglycerides as the oil phase, polyoxyl-35 castor oil (EL35) and polyethylene glycol (15)-hydroxystearate (HS15) as the nonionic surfactants, medium-chain mono- and diglycerides as the co-surfactant, and propylene glycol as the co-solvent. The cationic surfactant, didodecyldimethylammonium bromide (DDA), and the anionic surfactant, sodium deoxycholate (DEO), were added to the neutral SEDDS preconcentrates to obtain cationic and anionic SEDDS, respectively. SEDDS were incubated with human blood plasma and recovered by size exclusion chromatography. Data showed that SEDDS emulsion droplets can bind plasma protein to different extents depending on their surface charge and surfactant used. At pH 7.4, the least protein binding was observed with anionic SEDDS. Positive charges increased protein binding. SEDDS stabilized by HS15 can adsorb more plasma protein and induce more plasma membrane disruption activity than SEDDS stabilized by EL35. These effects were more pronounced with the HS15 + DDA combination. The addition of DDA and DEO to SEDDS increased plasma membrane disruption (PMD) activities, and DDA (1% w/w) was more active than DEO (2% w/w). PMD activities of SEDDS were concentration-dependent and vanished at appropriate dilution ratios.
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Affiliation(s)
- Bao Le-Vinh
- Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innrain 80/82, Innsbruck, 6020, Austria
- Department of Industrial Pharmacy, Faculty of Pharmacy, University of Medicine and Pharmacy, Ho Chi Minh, 700000, Viet Nam
| | - Nguyet-Minh Nguyen Le
- Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innrain 80/82, Innsbruck, 6020, Austria
- Department of Industrial Pharmacy, Faculty of Pharmacy, University of Medicine and Pharmacy, Ho Chi Minh, 700000, Viet Nam
| | - Thi Nhu Quynh Phan
- Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innrain 80/82, Innsbruck, 6020, Austria
| | - Hung Thanh Lam
- Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innrain 80/82, Innsbruck, 6020, Austria
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Can Tho University of Medicine and Pharmacy, Can Tho, Viet Nam
| | - Andreas Bernkop-Schnürch
- Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innrain 80/82, Innsbruck, 6020, Austria.
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9
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Irfan I, Uddin A, Jain R, Gupta A, Gupta S, Napoleon JV, Hussain A, Alajmi MF, Joshi MC, Hasan P, Kumar P, Abid M, Singh S. Biological evaluation of novel side chain containing CQTrICh-analogs as antimalarials and their development as PfCDPK1 kinase inhibitors. Heliyon 2024; 10:e25077. [PMID: 38327451 PMCID: PMC10847618 DOI: 10.1016/j.heliyon.2024.e25077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 01/17/2024] [Accepted: 01/19/2024] [Indexed: 02/09/2024] Open
Abstract
The rapid emergence of resistance to existing frontline antimalarial drugs emphasizes a need for the development of target-oriented molecules with novel modes of action. Given the importance of a plant-like Calcium-Dependent Protein Kinase 1 (PfCDPK1) as a stand-alone multistage signalling regulator of P. falciparum, we designed and synthesized 7-chloroquinoline-indole-chalcones tethered with a triazole (CQTrICh-analogs 7 (a-s) and 9) directed towards PfCDPK1. This was accomplished by reacting substituted 1-phenyl-3-(1-(prop-2-yn-1-yl)-1H-indol-3-yl) prop-2-en-1-one and 1-(prop-2-yn-1-yl)-1H-indole-3-carbaldehyde with 4-azido-7-chloroquinoline, respectively via a 'click' reaction. The selected CQTrICh-analogs: 7l and 7r inhibited the growth of chloroquine-sensitive 3D7 strain and -resistant RKL-9 isolate of Plasmodium falciparum, with IC50 values of 2.4 μM & 1.8 μM (7l), and 3.5 μM & 2.7 μM (7r), respectively, and showed no apparent hemolytic activity and cytotoxicity in mammalian cells. Intra-erythrocytic progression studies revealed that the active hybrids: 7l and 7r are effective against the mature stages of the parasite. 7l and 7r were found to stably interact with the catalytically active ATP-binding pocket of PfCDPK1 via energetically favourable H-bonds. The interaction was confirmed in vitro by microscale thermophoresis and kinase assays, which demonstrated that the active hybrids interact with PfCDPK1 and inhibit its kinase activity which is presumably responsible for the parasite growth inhibition. Interestingly, 7l and 7r showed no inhibitory effect on the human kinases, indicating their selectivity for the parasite kinase. We report the antiplasmodial potential of novel kinase-targeting bio-conjugates, a step towards developing pan-kinase inhibitors which is a prerequisite for multistage anti-malarial protection.
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Affiliation(s)
- Iram Irfan
- Medicinal Chemistry Laboratory, Department of Biosciences, Jamia Millia Islamia, New Delhi, 110025, India
| | - Amad Uddin
- Medicinal Chemistry Laboratory, Department of Biosciences, Jamia Millia Islamia, New Delhi, 110025, India
- Special Centre for Molecular Medicine, Jawaharlal Nehru University, New Delhi 110067, India
| | - Ravi Jain
- Special Centre for Molecular Medicine, Jawaharlal Nehru University, New Delhi 110067, India
| | - Aashima Gupta
- Special Centre for Molecular Medicine, Jawaharlal Nehru University, New Delhi 110067, India
| | - Sonal Gupta
- Special Centre for Molecular Medicine, Jawaharlal Nehru University, New Delhi 110067, India
| | | | - Afzal Hussain
- Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Mohamed F. Alajmi
- Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Mukesh C. Joshi
- Department of Chemistry, Kirori Mal College, University of Delhi, Delhi 110007, India
| | - Phool Hasan
- Medicinal Chemistry Laboratory, Department of Biosciences, Jamia Millia Islamia, New Delhi, 110025, India
| | - Purnendu Kumar
- Special Centre for Molecular Medicine, Jawaharlal Nehru University, New Delhi 110067, India
| | - Mohammad Abid
- Medicinal Chemistry Laboratory, Department of Biosciences, Jamia Millia Islamia, New Delhi, 110025, India
| | - Shailja Singh
- Special Centre for Molecular Medicine, Jawaharlal Nehru University, New Delhi 110067, India
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10
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Cherri M, Romero JF, Steiner L, Dimde M, Koeppe H, Paulus B, Mohammadifar E, Haag R. Power of the Disulfide Bond: An Ideal Random Copolymerization of Biodegradable Redox-Responsive Hyperbranched Polyglycerols. Biomacromolecules 2024; 25:119-133. [PMID: 38112688 DOI: 10.1021/acs.biomac.3c00863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
The development of copolymerization techniques that can randomly incorporate biodegradable moieties into the hyperbranched polyglycerol backbone is an option to prevent its bioaccumulation in vivo. In this study, redox-responsive and biocompatible hyperbranched polyglycerol copolymers of glycidol and 1,4,5-oxadithiepan-2-one were synthesized with an adjustable molecular weight and a defined disulfide bond content through anionic and coordination-insertion ring-opening polymerization. A truly random incorporation of the monomers was achieved under both copolymerization mechanisms. The copolymers were further characterized in terms of their aggregation behavior in solution, degradability, in vitro cell viability, and blood compatibility for potential future biomedical applications. Transmission electron microscopy revealed that the copolymer assembled into nanoparticles with a size range of 20 nm. The copolymers underwent degradation when incubated with two different reducing agents, resulting in smaller fragments of the polymer with thiol end groups. The copolymers demonstrated good biocompatibility, making them suitable for further investigation in biomedical applications.
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Affiliation(s)
- Mariam Cherri
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany
| | - J Fernanda Romero
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany
| | - Luca Steiner
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Arnimallee 22, 14195 Berlin, Germany
| | - Mathias Dimde
- Institute of Chemistry and Biochemistry, Research Center of Electron Microscopy, Freie Universität Berlin, Berlin 14195, Germany
| | - Hanna Koeppe
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany
| | - Beate Paulus
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Arnimallee 22, 14195 Berlin, Germany
| | - Ehsan Mohammadifar
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany
| | - Rainer Haag
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany
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11
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Irfan I, Ali A, Ubaid A, Sherwani Y, Arora B, Khan MM, Joshi MC, Abid M. Synergistic antimicrobial activity, MD simulation studies and crystal structure of natural alcohol motif containing novel substituted cinnamates. J Biomol Struct Dyn 2024; 42:211-230. [PMID: 36995166 DOI: 10.1080/07391102.2023.2194004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 03/09/2023] [Indexed: 03/31/2023]
Abstract
A series of natural alcohols motif containing novel substituted cinnamates were developed and screened against five bacterial strains namely, Enterococcus faecal (E. faecalis), Escherichia coli (E. coli), Bacillus subtilis (B. subtilis), Pseudomonas aeruginosa (P. aeruginosa) and Klebsiella pneumonieae (K. pneumonieae). Among all cinnamates, YS17 was identified with 100% bacterial growth inhibition across the panel, except in E. faecalis with MIC values of 0.25 mg/mL against B. subtilis and P. aeruginosa whereas 0.125, 0.5 and 1 mg/mL against E. coli, K. pneumonieae and E. faecalis, respectively. The growth inhibitory property of YS17 was further validated by disk diffusion, synergistic study and in vitro toxicity assays. Interestingly, YS17 exhibits synergistic effect in combination with the standard drug Ampicillin (AMP). The single crystal structure analysis of YS4 and YS6 was also performed which reconfirmed their proposed structures. Molecular docking visualized significant non-covalent interactions between E. coli MetAP and YS17 and the structural and conformational changes were further analysed using MD simulation studies. Overall, the study provided a suitable core for further synthetic alterations for their optimization as an antibacterial agent. Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Iram Irfan
- Department of Biosciences, Jamia Millia Islamia, New Delhi, India
| | - Asghar Ali
- Department of Biosciences, Jamia Millia Islamia, New Delhi, India
| | - Ayesha Ubaid
- Department of Biosciences, Jamia Millia Islamia, New Delhi, India
| | | | - Bhoomika Arora
- Department of Biosciences, Jamia Millia Islamia, New Delhi, India
| | - Md Musawwer Khan
- Department of Chemistry, Aligarh Muslim University, Aligarh, India
| | - Mukesh C Joshi
- Department of Chemistry, Kirori Mal College, University of Delhi, Delhi, India
| | - Mohammad Abid
- Department of Biosciences, Jamia Millia Islamia, New Delhi, India
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12
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Roy S, Kc HR, Roberts J, Hastings J, Gilmore DF, Shields RC, Alam MA. Development and Antibacterial Properties of 4-[4-(Anilinomethyl)-3-phenylpyrazol-1-yl]benzoic Acid Derivatives as Fatty Acid Biosynthesis Inhibitors. J Med Chem 2023; 66:13622-13645. [PMID: 37729113 PMCID: PMC10591900 DOI: 10.1021/acs.jmedchem.3c00969] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/22/2023]
Abstract
A number of novel pyrazole derivatives have been synthesized, and several of these compounds are potent antibacterial agents with minimum inhibitory concentrations as low as 0.5 μg/mL. Human cell lines were tolerant to these lead compounds, and they showed negligible hemolytic effects at high concentrations. These bactericidal compounds are very effective against bacterial growth in both planktonic and biofilm contexts. Various techniques were applied to show the inhibition of biofilm growth and eradication of preformed biofilms by lead compounds. Potent compounds are more effective against persisters than positive controls. In vivo studies revealed that lead compounds are effective in rescuing C. elegans from bacterial infections. Several methods were applied to determine the mode of action including membrane permeability assay and SEM micrograph studies. Furthermore, CRISPRi studies led to the determination of these compounds as fatty acid biosynthesis (FAB) inhibitors.
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Affiliation(s)
- Subrata Roy
- Department of Chemistry and Physics, College of Science and Mathematics, Arkansas State University, Jonesboro, Arkansas 72467, United States
| | - Hansa Raj Kc
- Department of Chemistry and Physics, College of Science and Mathematics, Arkansas State University, Jonesboro, Arkansas 72467, United States
| | - Justin Roberts
- Department of Chemistry and Physics, College of Science and Mathematics, Arkansas State University, Jonesboro, Arkansas 72467, United States
| | - Jared Hastings
- Department of Chemistry and Physics, College of Science and Mathematics, Arkansas State University, Jonesboro, Arkansas 72467, United States
| | - David F Gilmore
- Department of Biological Sciences, College of Science and Mathematics, Arkansas State University, Jonesboro, Arkansas 72467, United States
| | - Robert C Shields
- Department of Biological Sciences, College of Science and Mathematics, Arkansas State University, Jonesboro, Arkansas 72467, United States
| | - Mohammad A Alam
- Department of Chemistry and Physics, College of Science and Mathematics, Arkansas State University, Jonesboro, Arkansas 72467, United States
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13
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Sivakumar R, Floyd K, Jessey E, Kim JK, Bayguinov PO, Fitzpatrick JA, Goldfrab D, Jovanovic M, Tripathi A, Djuranovic S, Pavlovic-Djuranovic S. Poly-basic peptides and polymers as new drug candidate against Plasmodium falciparum. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.09.16.558069. [PMID: 37745508 PMCID: PMC10516022 DOI: 10.1101/2023.09.16.558069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/26/2023]
Abstract
Plasmodium falciparum, the malaria-causing parasite, is a leading cause of infection-induced deaths worldwide. The preferred treatment approach is artemisinin-combination therapy, which couples fast-acting artemisinin derivatives with longer-acting drugs like lumefantrine, mefloquine, and amodiaquine. However, the urgency for new treatments has risen due to the parasite's growing resistance to existing therapies. Our study shows that a common characteristic of the P. falciparum proteome - stretches of poly-lysine residues such as those found in proteins related to adhesion and pathogenicity - can serve as an effective peptide treatment for infected erythrocytes. A single dose of these poly-basic peptides can successfully diminish parasitemia in human erythrocytes in vitro with minimal toxicity. The effectiveness of the treatment correlates with the length of the poly-lysine peptide, with 30 lysine peptides supporting the eradication of erythrocytic parasites within 72 hours. PEG-ylation of the poly-lysine peptides or utilizing poly-lysine dendrimers and polymers further increases parasite clearance efficiency and bolsters the stability of these potential new therapeutics. Lastly, our affinity pull-downs and mass-spectrometry identify P. falciparum's outer membrane proteins as likely targets for polybasic peptide medications. Since poly-lysine dendrimers are already FDA-approved for drug delivery, their adaptation as antimalarial drugs presents a promising new therapeutic strategy.
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Affiliation(s)
- Roshan Sivakumar
- Department of Cell Biology and Physiology, Washington University School of Medicine; Missouri, USA
| | - Katherine Floyd
- Department of Cell Biology and Physiology, Washington University School of Medicine; Missouri, USA
| | - Erath Jessey
- Department of Cell Biology and Physiology, Washington University School of Medicine; Missouri, USA
| | - Jenny Kim Kim
- Department of Biological Sciences, Columbia University; New York, New York, USA
| | - Peter O. Bayguinov
- Washington University Center for Cellular Imaging, Washington University School of Medicine; Missouri, USA
- Department of Neuroscience, Washington University School of Medicine; Missouri, USA
| | - James A.J. Fitzpatrick
- Department of Cell Biology and Physiology, Washington University School of Medicine; Missouri, USA
- Washington University Center for Cellular Imaging, Washington University School of Medicine; Missouri, USA
- Department of Neuroscience, Washington University School of Medicine; Missouri, USA
| | - Dennis Goldfrab
- Department of Cell Biology and Physiology, Washington University School of Medicine; Missouri, USA
| | - Marko Jovanovic
- Department of Biological Sciences, Columbia University; New York, New York, USA
| | - Abhai Tripathi
- Johns Hopkins Bloomberg School of Public Health; Baltimore, Maryland, USA
| | - Sergej Djuranovic
- Department of Cell Biology and Physiology, Washington University School of Medicine; Missouri, USA
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14
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Hamadani CM, Dasanayake GS, Gorniak ME, Pride MC, Monroe W, Chism CM, Heintz R, Jarrett E, Singh G, Edgecomb SX, Tanner EEL. Development of ionic liquid-coated PLGA nanoparticles for applications in intravenous drug delivery. Nat Protoc 2023; 18:2509-2557. [PMID: 37468651 DOI: 10.1038/s41596-023-00843-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 01/18/2023] [Indexed: 07/21/2023]
Abstract
Polymeric nanoparticles (NPs) are a promising platform for medical applications in drug delivery. However, their use as drug carriers is limited by biological (e.g., immunological) barriers after intravenous administration. Ionic liquids (ILs), formed from bulky asymmetric cations and anions, have a wide variety of physical internal and external interfacing properties. When assembled on polymeric NPs as biomaterial coatings, these external-interfacing properties can be tuned to extend their circulation half-life when intravenously injected, as well as drive biodistribution to sites of interest for selective organ accumulation. In our work, we are particularly interested in optimizing IL coatings to enable red blood cell hitchhiking in whole blood. In this protocol, we describe the preparation and physicochemical and biological characterization of choline carboxylate IL-coated polymeric NPs. The procedure is divided into five stages: (1) synthesis and characterization of choline-based ILs (1 week); (2) bare poly(lactic-co-glycolic acid) (50:50, acid terminated) Resomer 504H (PLGA) NP assembly, modified from previously established protocols, with dye encapsulation (7 h); (3) modification of the bare particles with IL coating (3 h); (4) physicochemical characterization of both PLGA and IL-PLGA NPs by dynamic light scattering, 1H nuclear magnetic resonance spectroscopy, and transmission electron microscopy (1 week); (5) ex vivo evaluation of intravenous biocompatibility (including serum-protein resistance and hemolysis) and red blood cell hitchhiking in whole BALB/c mouse blood via fluorescence-activated cell sorting (1 week). With practice and technique refinement, this protocol is accessible to late-stage graduate students and early-stage postdoctoral scientists.
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Affiliation(s)
- Christine M Hamadani
- Department of Chemistry and Biochemistry, University of Mississippi, Oxford, MS, USA
| | - Gaya S Dasanayake
- Department of Chemistry and Biochemistry, University of Mississippi, Oxford, MS, USA
| | - Meghan E Gorniak
- Department of Chemistry and Biochemistry, University of Mississippi, Oxford, MS, USA
| | - Mercedes C Pride
- Department of Chemistry and Biochemistry, University of Mississippi, Oxford, MS, USA
| | - Wake Monroe
- Department of Chemistry and Biochemistry, University of Mississippi, Oxford, MS, USA
| | - Claylee M Chism
- Department of Chemistry and Biochemistry, University of Mississippi, Oxford, MS, USA
| | - Rebekah Heintz
- Department of Chemistry and Biochemistry, University of Mississippi, Oxford, MS, USA
| | - Ethan Jarrett
- Department of Chemistry and Biochemistry, University of Mississippi, Oxford, MS, USA
| | - Gagandeep Singh
- Department of Chemistry and Biochemistry, University of Mississippi, Oxford, MS, USA
| | - Sara X Edgecomb
- Department of Chemistry and Biochemistry, University of Mississippi, Oxford, MS, USA
| | - Eden E L Tanner
- Department of Chemistry and Biochemistry, University of Mississippi, Oxford, MS, USA.
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15
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Tavira M, Mousavi-Khattat M, Shakeran Z, Zarrabi A. PCL/gelatin nanofibers embedded with doxorubicin-loaded mesoporous silica nanoparticles/silver nanoparticles as an antibacterial and anti-melanoma cancer. Int J Pharm 2023; 642:123162. [PMID: 37343778 DOI: 10.1016/j.ijpharm.2023.123162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 06/15/2023] [Accepted: 06/18/2023] [Indexed: 06/23/2023]
Abstract
Melanoma cancer wound healing is critical and complex and poses a significant challenge to researchers. Drug resistance, adverse side effects, and inefficient localization of chemotherapeutic drugs limit common treatment strategies in melanoma cancer. Using drug delivery nanostructures with low side effects and high efficiency, besides having antibacterial and antiseptic properties, can effectively repair the damage caused by the disease. To this end, this study aimed to develop a drug delivery nanosystem based on doxorubicin (DOX)-loaded amine-functionalized mesoporous silica nanoparticles (MSNs), linked with green synthesized silver nanoparticles (AgNPs). Characterization methods including microscopic methods and X-ray diffraction (XRD) confirmed the synthesis and functionalization of the well-dispersed nanoparticles with nanosized and uniform structures. The poly(ε-caprolactone) (PCL) nanofibers as a strong scaffold were produced by the blow spinning method and DOX-loaded nanoparticles were blow spun on PCL nanofibers along with gelatin solution. The resulting nanosystem including nanofibers and nanoparticles (NFs/NPS) showed a fine loading percent with a proper release profile of DOX and AgNPs and low hemolysis activity. Moreover, besides preventing infection by AgNPs, the DOX-loaded NFs/NPs could effectively destroy melanoma cancer cells. The attachment of normal cells to the nanoparticles-loaded nanofibers scaffold revealed the possibility of healing wounds caused by melanoma cancer.
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Affiliation(s)
- Melika Tavira
- Department of Biochemistry, Faculty of Medicine, Najafabad Branch, Islamic Azad University, Najafabad, Isfahan, Iran
| | - Mohammad Mousavi-Khattat
- Department of Biotechnology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran
| | - Zahra Shakeran
- Department of Biotechnology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran
| | - Ali Zarrabi
- Department of Biomedical Engineering, Faculty of Engineering and Natural Sciences, Istinye University, Istanbul 34396, Türkiye.
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16
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Hamadani CM, Dasanayake GS, Chism CM, Gorniak ME, Monroe WG, Merrell A, Pride MC, Heintz R, Wong K, Hossain M, Taylor G, Edgecomb SX, Jones D, Dhar J, Banka A, Singh G, Vashisth P, Randall J, Darlington DS, Everett J, Jarrett E, Werfel TA, Eniola-Adefeso O, Tanner EEL. Selective Blood Cell Hitchhiking in Whole Blood with Ionic Liquid-Coated PLGA Nanoparticles to Redirect Biodistribution After Intravenous Injection. RESEARCH SQUARE 2023:rs.3.rs-3146716. [PMID: 37502854 PMCID: PMC10371090 DOI: 10.21203/rs.3.rs-3146716/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
Less than 5% of intravenously-injected nanoparticles (NPs) reach destined sites in the body due to opsonization and immune-based clearance in vascular circulation. By hitchhiking in situ onto specific blood components post-injection, NPs can selectively target tissue sites for unprecedentedly high drug delivery rates. Choline carboxylate ionic liquids (ILs) are biocompatible liquid salts <100X composed of bulky asymmetric cations and anions. This class of ILs has been previously shown to significantly extend circulation time and redirect biodistribution in BALB/c mice post-IV injection via hitchhiking on red blood cell (RBC) membranes. Herein, we synthesized & screened 60 choline carboxylic acid-based ILs to coat PLGA NPs and present the impact of structurally engineering the coordinated anion identity to selectively interface and hitchhike lymphocytes, monocytes, granulocytes, platelets, and RBCs in whole mouse blood for in situ targeted drug delivery. Furthermore, we find this nanoparticle platform to be biocompatible (non-cytotoxic), translate to human whole blood by resisting serum uptake and maintaining modest hitchhiking, and also significantly extend circulation retention over 24 hours in BALB/c healthy adult mice after IV injection. Because of their altered circulation profiles, we additionally observe dramatically different organ accumulation profiles compared to bare PLGA NPs. This study establishes an initial breakthrough platform for a modular and transformative targeting technology to hitchhike onto blood components with high efficacy and safety in the bloodstream post-IV administration.
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17
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Wang H, Zhai Y, Lei Z, Chen S, Sun M, Yin P, Duan Z, Wang X. Latroeggtoxin-VI protects nerve cells and prevents depression by inhibiting NF-κB signaling pathway activation and excessive inflammation. Front Immunol 2023; 14:1171351. [PMID: 37256144 PMCID: PMC10225626 DOI: 10.3389/fimmu.2023.1171351] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Accepted: 05/02/2023] [Indexed: 06/01/2023] Open
Abstract
Depression has a high incidence and seriously endangers human health. Accumulated evidence indicates that targeting neuroinflammation is a potential avenue for neuroprotection and thus depression prevention. Herein, the effects of latroeggtoxin-VI (LETX-VI), a bioactive protein from the eggs of spider Latrodectus tredecimguttatus, on lipopolysaccharide (LPS)-induced inflammation and depression were systematically investigated using RAW264.7 macrophages and depression mouse model. Pretreatment with LETX-VI suppressed LPS-evoked NF-κB signaling pathway activation, inhibited LPS-induced over-production of NO, iNOS, IL-6 and TNF-α; at the same time LETX-VI mitigated the inhibitory effect of LPS on the expression of anti-inflammatory factors such as Arg-1, thereby suppressing oxidative stress and excessive inflammation. Culture of PC12 cells with the conditioned medium of RAW264.7 cells pretreated with LETX-VI demonstrated the neuroprotective effect of LETX-VI due to its anti-inflammation effect. In the LPS-induced depression mouse model, pretreatment with LETX-VI improved the LPS-induced depression-like behaviors, inhibited the activation of microglia and astrocytes, prevented the down-regulation of Nurr1 expression and alleviated the LPS-caused adverse changes in the brain tissues. Taken together, these in vitro and in vivo findings provide powerful insights into the anti-inflammation-based neuroprotective and antidepressant mechanisms of LETX-VI, which is helpful to deeply reveal the biological effects and potential applications of LETX-VI.
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18
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LaBauve AE, Saada EA, Jones IKA, Mosesso R, Noureddine A, Techel J, Gomez A, Collette N, Sherman MB, Serda RE, Butler KS, Brinker CJ, Schoeniger JS, Sasaki D, Negrete OA. Lipid-coated mesoporous silica nanoparticles for anti-viral applications via delivery of CRISPR-Cas9 ribonucleoproteins. Sci Rep 2023; 13:6873. [PMID: 37105997 PMCID: PMC10133914 DOI: 10.1038/s41598-023-33092-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Accepted: 04/06/2023] [Indexed: 04/29/2023] Open
Abstract
Emerging and re-emerging viral pathogens present a unique challenge for anti-viral therapeutic development. Anti-viral approaches with high flexibility and rapid production times are essential for combating these high-pandemic risk viruses. CRISPR-Cas technologies have been extensively repurposed to treat a variety of diseases, with recent work expanding into potential applications against viral infections. However, delivery still presents a major challenge for these technologies. Lipid-coated mesoporous silica nanoparticles (LCMSNs) offer an attractive delivery vehicle for a variety of cargos due to their high biocompatibility, tractable synthesis, and amenability to chemical functionalization. Here, we report the use of LCMSNs to deliver CRISPR-Cas9 ribonucleoproteins (RNPs) that target the Niemann-Pick disease type C1 gene, an essential host factor required for entry of the high-pandemic risk pathogen Ebola virus, demonstrating an efficient reduction in viral infection. We further highlight successful in vivo delivery of the RNP-LCMSN platform to the mouse liver via systemic administration.
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Affiliation(s)
- Annette E LaBauve
- Department of Biotechnology and Bioengineering, Sandia National Laboratories, Livermore, USA
| | - Edwin A Saada
- Department of Systems Biology, Sandia National Laboratories, Livermore, USA
- Biotechnology and Biosciences Division, Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, USA
| | - Iris K A Jones
- Department of Systems Biology, Sandia National Laboratories, Livermore, USA
| | - Richard Mosesso
- Department of Systems Biology, Sandia National Laboratories, Livermore, USA
| | - Achraf Noureddine
- Chemical and Biological Engineering, University of New Mexico, Albuquerque, USA
- Center for Micro-Engineered Materials, University of New Mexico, Albuquerque, USA
| | - Jessica Techel
- Department of Biotechnology and Bioengineering, Sandia National Laboratories, Livermore, USA
| | - Andrew Gomez
- Department of Active Ceramics Value Stream, Sandia National Laboratories, Albuquerque, USA
| | - Nicole Collette
- Biotechnology and Biosciences Division, Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, USA
| | - Michael B Sherman
- Sealy Center for Structural Biology and Molecular Biophysics, University of Texas Medical Branch, Galveston, USA
| | - Rita E Serda
- Department of Internal Medicine, Health Sciences Center, University of New Mexico, Albuquerque, USA
| | - Kimberly S Butler
- Department of Molecular and Microbiology, Sandia National Laboratories, Albuquerque, USA
| | - C Jeffery Brinker
- Chemical and Biological Engineering, University of New Mexico, Albuquerque, USA
- Center for Micro-Engineered Materials, University of New Mexico, Albuquerque, USA
- Advanced Materials Laboratory, Sandia National Laboratories, Albuquerque, USA
| | | | - Darryl Sasaki
- Department of Biotechnology and Bioengineering, Sandia National Laboratories, Livermore, USA
| | - Oscar A Negrete
- Department of Systems Biology, Sandia National Laboratories, Livermore, USA.
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19
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Voltà-Durán E, Parladé E, Serna N, Villaverde A, Vazquez E, Unzueta U. Endosomal escape for cell-targeted proteins. Going out after going in. Biotechnol Adv 2023; 63:108103. [PMID: 36702197 DOI: 10.1016/j.biotechadv.2023.108103] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 01/19/2023] [Accepted: 01/19/2023] [Indexed: 01/24/2023]
Abstract
Protein-based nanocarriers are versatile and biocompatible drug delivery systems. They are of particular interest in nanomedicine as they can recruit multiple functions in a single modular polypeptide. Many cell-targeting peptides or protein domains can promote cell uptake when included in these nanoparticles through receptor-mediated endocytosis. In that way, targeting drugs to specific cell receptors allows a selective intracellular delivery process, avoiding potential side effects of the payload. However, once internalized, the endo-lysosomal route taken by the engulfed material usually results in full degradation, preventing their adequate subcellular localization, bioavailability and subsequent therapeutic effect. Thus, entrapment into endo-lysosomes is a main bottleneck in the efficacy of protein-drug nanomedicines. Promoting endosomal escape and preventing lysosomal degradation would make this therapeutic approach clinically plausible. In this review, we discuss the mechanisms intended to evade lysosomal degradation of proteins, with the most relevant examples and associated strategies, and the methods available to measure that effect. In addition, based on the increasing catalogue of peptide domains tailored to face this challenge as components of protein nanocarriers, we emphasize how their particular mechanisms of action can potentially alter the functionality of accompanying protein materials, especially in terms of targeting and specificity in the delivery process.
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Affiliation(s)
- Eric Voltà-Durán
- Institut de Biotecnologia i de Biomedicina, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Spain; CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Instituto de Salud Carlos III, 08193 Cerdanyola del Vallès, Spain; Departament de Genètica i de Microbiologia, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Spain
| | - Eloi Parladé
- Institut de Biotecnologia i de Biomedicina, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Spain; CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Instituto de Salud Carlos III, 08193 Cerdanyola del Vallès, Spain; Departament de Genètica i de Microbiologia, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Spain
| | - Naroa Serna
- Institut de Biotecnologia i de Biomedicina, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Spain; CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Instituto de Salud Carlos III, 08193 Cerdanyola del Vallès, Spain; Departament de Genètica i de Microbiologia, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Spain
| | - Antonio Villaverde
- Institut de Biotecnologia i de Biomedicina, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Spain; CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Instituto de Salud Carlos III, 08193 Cerdanyola del Vallès, Spain; Departament de Genètica i de Microbiologia, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Spain.
| | - Esther Vazquez
- Institut de Biotecnologia i de Biomedicina, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Spain; CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Instituto de Salud Carlos III, 08193 Cerdanyola del Vallès, Spain; Departament de Genètica i de Microbiologia, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Spain.
| | - Ugutz Unzueta
- CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Instituto de Salud Carlos III, 08193 Cerdanyola del Vallès, Spain; Departament de Genètica i de Microbiologia, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Spain; Biomedical Research Institute Sant Pau (IIB Sant Pau), 08041 Barcelona, Spain; Josep Carreras Leukaemia Research Institute, 08916 Badalona, Spain.
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20
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Liu Q, Shaukat A, Meng Z, Nummelin S, Tammelin T, Kontturi E, de Vries R, Kostiainen MA. Engineered Protein Copolymers for Heparin Neutralization and Detection. Biomacromolecules 2023; 24:1014-1021. [PMID: 36598935 PMCID: PMC9930113 DOI: 10.1021/acs.biomac.2c01464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Heparin is a widely applied anticoagulant agent. However, in clinical practice, it is of vital importance to reverse its anticoagulant effect to restore the blood-clotting cascade and circumvent side effects. Inspired by protein cages that can encapsulate and protect their cargo from surroundings, we utilize three designed protein copolymers to sequester heparin into inert nanoparticles. In our design, a silk-like sequence provides cooperativity between proteins, generating a multivalency effect that enhances the heparin-binding ability. Protein copolymers complex heparin into well-defined nanoparticles with diameters below 200 nm. We also develop a competitive fluorescent switch-on assay for heparin detection, with a detection limit of 0.01 IU mL-1 in plasma that is significantly below the therapeutic range (0.2-8 IU mL-1). Moreover, moderate cytocompatibility is demonstrated by in vitro cell studies. Therefore, such engineered protein copolymers present a promising alternative for neutralizing and sensing heparin, but further optimization is required for in vivo applications.
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Affiliation(s)
- Qing Liu
- Biohybrid Materials, Department of Bioproducts and Biosystems, Aalto University, Aalto00076, Finland.,Wenzhou Institute, University of Chinese Academy of Sciences (WIUCAS), Wenzhou325001, China
| | - Ahmed Shaukat
- Biohybrid Materials, Department of Bioproducts and Biosystems, Aalto University, Aalto00076, Finland
| | - Zhuojun Meng
- Wenzhou Institute, University of Chinese Academy of Sciences (WIUCAS), Wenzhou325001, China.,Materials Chemistry of Cellulose, Department of Bioproducts and Biosystems, Aalto University, Aalto00076, Finland
| | - Sami Nummelin
- Biohybrid Materials, Department of Bioproducts and Biosystems, Aalto University, Aalto00076, Finland
| | - Tekla Tammelin
- VTT Technical Research Centre of Finland Ltd, VTT, P.O. Box 1000, EspooFI-02044, Finland
| | - Eero Kontturi
- Materials Chemistry of Cellulose, Department of Bioproducts and Biosystems, Aalto University, Aalto00076, Finland
| | - Renko de Vries
- Physical Chemistry and Soft Matter, Wageningen University and Research Centre, Wageningen6708 WE, The Netherlands
| | - Mauri A Kostiainen
- Biohybrid Materials, Department of Bioproducts and Biosystems, Aalto University, Aalto00076, Finland
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21
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Salas-Ambrosio P, Vexler S, P S R, Chen IA, Maynard HD. Caffeine and Cationic Copolymers with Antimicrobial Properties. ACS BIO & MED CHEM AU 2023; 3:189-200. [PMID: 37096032 PMCID: PMC10119941 DOI: 10.1021/acsbiomedchemau.2c00077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 01/25/2023] [Accepted: 01/26/2023] [Indexed: 02/16/2023]
Abstract
One of the primary global health concerns is the increase in antimicrobial resistance. Polymer chemistry enables the preparation of macromolecules with hydrophobic and cationic side chains that kill bacteria by destabilizing their membranes. In the current study, macromolecules are prepared by radical copolymerization of caffeine methacrylate as the hydrophobic monomer and cationic- or zwitterionic-methacrylate monomers. The synthesized copolymers bearing tert-butyl-protected carboxybetaine as cationic side chains showed antibacterial activity toward Gram-positive bacteria (S. aureus) and Gram-negative bacteria (E. coli). By tuning the hydrophobic content, we prepared copolymers with optimal antibacterial activity against S. aureus, including methicillin-resistant clinical isolates. Moreover, the caffeine-cationic copolymers presented good biocompatibility in a mouse embryonic fibroblast cell line, NIH 3T3, and hemocompatibility with erythrocytes even at high hydrophobic monomer content (30-50%). Therefore, incorporating caffeine and introducing tert-butyl-protected carboxybetaine as a quaternary cation in polymers could be a novel strategy to combat bacteria.
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Affiliation(s)
- Pedro Salas-Ambrosio
- Department of Chemistry and Biochemistry and California Nano Systems Institute, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, California 90095, United States
| | - Shelby Vexler
- Department of Chemistry and Biochemistry and California Nano Systems Institute, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, California 90095, United States
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, 508 Portola Plaza, Los Angeles, California 90095, United States
| | - Rajalakshmi P S
- Department of Chemistry and Biochemistry and California Nano Systems Institute, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, California 90095, United States
| | - Irene A. Chen
- Department of Chemistry and Biochemistry and California Nano Systems Institute, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, California 90095, United States
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, 508 Portola Plaza, Los Angeles, California 90095, United States
| | - Heather D. Maynard
- Department of Chemistry and Biochemistry and California Nano Systems Institute, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, California 90095, United States
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22
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Microbially Synthesized Polymer-Metal Nanoparticles Composites as Promising Wound Dressings to Overcome Methicillin-Resistance Staphylococcus aureus Infections. Polymers (Basel) 2023; 15:polym15040920. [PMID: 36850204 PMCID: PMC9960834 DOI: 10.3390/polym15040920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 01/22/2023] [Accepted: 02/06/2023] [Indexed: 02/15/2023] Open
Abstract
Antimicrobial resistance has been declared one of the top 10 global public health threats. Methicillin-resistant Staphylococcus aureus (MRSA) is a leading cause of recurring skin and soft tissue infections in patients with chronic skin conditions such as diabetic foot infections, making the treatment of the ulcers challenging. Wound dressings combined with metal nanoparticles have been suggested to prevent and treat MRSA-infected wounds. However, these particles are commonly synthesized by chemical approaches. In this study, we developed bio-based silver (Bio-AgNPs) and copper oxide nanoparticles (CuONPs) polymer composites using a microbially produced polyester from the Polyhydroxyalkanoates (PHAs) family. Poly(3-hydroxyoctanoate)-co-(3-hydroxyhexanoate) (PHO) was synthesized by Pseudomonas putida and functionalized in-situ with Bio-AgNPs or ex-situ with CuONPs. PHO-CuONPs films did not inhibit MRSA growth, while a reduction of 6.0 log CFU/mL was achieved with PHO-Bio-AgNPs synthesized from silver nitrate (AgNO3) solution at 3.5 mM. Exposure of human fibroblast cells (HFF-1) to the bioactive films did not induce notable cytotoxicity and genotoxicity, as seen by a viability higher than 79% and no significant changes in basal DNA damage. However, exposure to PHO-Bio-AgNPs induced oxidative DNA damage in HFF-1 cells. No hemolytic potential was observed, while platelet aggregation was promoted and desired for wound healing. Here we demonstrate the biosynthesis of polymer-nanoparticle composites and their potential as bioactive films for MRSA treatment.
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23
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Sultana H, Aamir MN, Madni A, Rehman MU, Shafiq A, Shirazi JH, Hassan S, Sumaira. Polymeric Nanogel for Oral Delivery of the Chemotherapeutic Agent: Fabrication and Evaluation Alongside Toxicological Studies and Histopathological Examination. AAPS PharmSciTech 2023; 24:43. [PMID: 36702971 DOI: 10.1208/s12249-023-02499-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 12/27/2022] [Indexed: 01/27/2023] Open
Abstract
Nanogel has attracted considerable attention as one of the most versatile drug delivery systems, especially for site-specific and/or time-controlled delivery of the chemotherapeutic agent. The main objective of this study was to prepare the polymeric nanogel characterized by Fourier transform infrared spectroscopy, x-ray diffraction, thermogravimetric analysis, differential scanning, and oral acute toxicity. Free radical polymerization was done for the fabrication of polymeric nanogel. Fourier transform infrared spectroscopy was used to confirm the successful free radical polymerization. Various techniques such as x-ray diffraction, differential scanning calorimetric, and thermogravimetric analysis measurement were used to investigate the thermal behavior and crystallinity of developed nanogel. Parameters such as swelling, drug loading, and in vitro drug release is enhanced as polymers and monomers concentrations increase while these parameters decrease in case of increasing crosslinker concentration. The oral biocompatibility results of developed nanogel exhibited no toxicity in rabbits. Histopathological changes were observed between empty and loaded group. The nanosized gel offers a specific surface area which increases the stability of loaded drug (oxaliplatin) and bioavailability of the drug (oxaliplatin) as compared to the conventional drug delivery systems.
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Affiliation(s)
- Humaira Sultana
- Department of Pharmaceutics, Faculty of Pharmacy, The Islamia University of Bahawalpur, 63100, Bahawalpur, Pakistan
| | - Muhammad Naeem Aamir
- Department of Pharmaceutics, Faculty of Pharmacy, The Islamia University of Bahawalpur, 63100, Bahawalpur, Pakistan. .,School of Pharmacy, Newcastle University, Newcastle Upon Tyne, NE1 7RU, UK.
| | - Asadullah Madni
- Department of Pharmaceutics, Faculty of Pharmacy, The Islamia University of Bahawalpur, 63100, Bahawalpur, Pakistan
| | - Masood Ur Rehman
- Riphah Institute of Pharmaceutical Sciences, Riphah International University, Islamabad, 45320, Pakistan
| | - Afifa Shafiq
- Department of Pharmaceutics, Faculty of Pharmacy, The Islamia University of Bahawalpur, 63100, Bahawalpur, Pakistan
| | - Jafir Hussain Shirazi
- Department of Pharmaceutics, Faculty of Pharmacy, The Islamia University of Bahawalpur, 63100, Bahawalpur, Pakistan
| | - Sidra Hassan
- Bahawalpur College of Pharmacy, Bahawalpur Medical and Dental College, Bahawalpur, Pakistan
| | - Sumaira
- Department of Pharmaceutics, Faculty of Pharmacy, The Islamia University of Bahawalpur, 63100, Bahawalpur, Pakistan
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24
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Iminated aminoglycosides in self-emulsifying drug delivery systems: Dual approach to break down the microbial defense. J Colloid Interface Sci 2023; 630:164-178. [DOI: 10.1016/j.jcis.2022.10.077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 09/21/2022] [Accepted: 10/16/2022] [Indexed: 11/07/2022]
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25
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Pistono P, Huang P, Brauer DD, Francis MB. Fitness Landscape-Guided Engineering of Locally Supercharged Virus-like Particles with Enhanced Cell Uptake Properties. ACS Chem Biol 2022; 17:3367-3378. [PMID: 36378277 PMCID: PMC9764284 DOI: 10.1021/acschembio.2c00318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Protein-based nanoparticles are useful models for the study of self-assembly and attractive candidates for drug delivery. Virus-like particles (VLPs) are especially promising platforms for expanding the repertoire of therapeutics that can be delivered effectively as they can deliver many copies of a molecule per particle for each delivery event. However, their use is often limited due to poor uptake of VLPs into mammalian cells. In this study, we use the fitness landscape of the bacteriophage MS2 VLP as a guide to engineer capsid variants with positively charged surface residues to enhance their uptake into mammalian cells. By combining mutations with positive fitness scores that were likely to produce assembled capsids, we identified two key double mutants with internalization efficiencies as much as 67-fold higher than that of wtMS2. Internalization of these variants with positively charged surface residues depends on interactions with cell surface sulfated proteoglycans, and yet, they are biophysically similar to wtMS2 with low cytotoxicity and an overall negative charge. Additionally, the best-performing engineered MS2 capsids can deliver a potent anticancer small-molecule therapeutic with efficacy levels similar to antibody-drug conjugates. Through this work, we were able to establish fitness landscape-based engineering as a successful method for designing VLPs with improved cell penetration. These findings suggest that VLPs with positive surface charge could be useful in improving the delivery of small-molecule- and nucleic acid-based therapeutics.
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Affiliation(s)
- Paige
E. Pistono
- Department
of Chemistry, University of California, Berkeley, California94720, United States
| | - Paul Huang
- Department
of Chemistry, University of California, Berkeley, California94720, United States
| | - Daniel D. Brauer
- Department
of Chemistry, University of California, Berkeley, California94720, United States
| | - Matthew B. Francis
- Department
of Chemistry, University of California, Berkeley, California94720, United States,Materials
Sciences Division, Lawrence Berkeley National
Laboratory, Berkeley, California94720, United States,
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26
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Hadjicharalambous A, Bournakas N, Newman H, Skynner MJ, Beswick P. Antimicrobial and Cell-Penetrating Peptides: Understanding Penetration for the Design of Novel Conjugate Antibiotics. Antibiotics (Basel) 2022; 11:1636. [PMID: 36421280 PMCID: PMC9686638 DOI: 10.3390/antibiotics11111636] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 11/11/2022] [Accepted: 11/15/2022] [Indexed: 08/27/2023] Open
Abstract
Antimicrobial peptides (AMPs) are short oligopeptides that can penetrate the bacterial inner and outer membranes. Together with cell-penetrating peptides (CPPs), they are called membrane active peptides; peptides which can translocate across biological membranes. Over the last fifty years, attempts have been made to understand the molecular features that drive the interactions of membranes with membrane active peptides. This review examines the features of a membrane these peptides exploit for translocation, as well as the physicochemical characteristics of membrane active peptides which are important for translocation. Moreover, it presents examples of how these features have been used in recent years to create conjugates consisting of a membrane active peptide, called a "vector", attached to either a current or novel antibiotic, called a "cargo" or "payload". In addition, the review discusses what properties may contribute to an ideal peptide vector able to deliver cargoes across the bacterial outer membrane as the rising issue of antimicrobial resistance demands new strategies to be employed to combat this global public health threat.
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Affiliation(s)
- Andreas Hadjicharalambous
- Department of Biochemistry, University of Cambridge, Cambridge CB2 1QN, UK
- BicycleTx Limited, Portway Building, Granta Park, Cambridge CB21 6GS, UK
| | - Nikolaos Bournakas
- BicycleTx Limited, Portway Building, Granta Park, Cambridge CB21 6GS, UK
| | - Hector Newman
- BicycleTx Limited, Portway Building, Granta Park, Cambridge CB21 6GS, UK
- School of Life Sciences, University of Warwick, Coventry CV4 7AL, UK
| | - Michael J. Skynner
- BicycleTx Limited, Portway Building, Granta Park, Cambridge CB21 6GS, UK
| | - Paul Beswick
- BicycleTx Limited, Portway Building, Granta Park, Cambridge CB21 6GS, UK
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27
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Zhu Y, Chen F, Wu M, Xiang J, Yan F, Xie Y, Tong Z, Chen Y, Cai L. Biocompatible and antibacterial Flammulina velutipes-based natural hybrid cryogel to treat noncompressible hemorrhages and skin defects. Front Bioeng Biotechnol 2022; 10:960407. [PMID: 36304898 PMCID: PMC9593062 DOI: 10.3389/fbioe.2022.960407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 09/20/2022] [Indexed: 11/23/2022] Open
Abstract
Hemorrhage, infection, and frequent replacement of dressings bring great clinical challenges to wound healing. In this work, Flammulina velutipes extract (FV) and hydroxyethyl cellulose (HEC) were chemically cross-linked and freeze-dried to obtain novel HFV cryogels (named HFVn, with n = 10, 40, or 70 corresponding to the weight percentage of the FV content), which were constructed for wound hemostasis and full-thickness skin defect repair. Systematic characterization experiments were performed to assess the morphology, mechanical properties, hydrophilic properties, and degradation rate of the cryogels. The results indicated that HFV70 showed a loose interconnected-porous structure and exhibited the highest porosity (95%) and water uptake ratio (over 2,500%) with a desirable degradation rate and shape memory properties. In vitro cell culture and hemocompatibility experiments indicated that HFV70 showed improved cytocompatibility and hemocompatibility. It can effectively mimic the extracellular matrix microenvironment and support the adhesion and proliferation of L929 cells, and its hemolysis rate in vitro was less than 5%. Moreover, HFV70 effectively induced tube formation in HUVEC cells in vitro. The results of the bacteriostatic annulus confirmed that HFV70 significantly inhibited the growth of Gram-negative E. coli and Gram-positive S. aureus. In addition, HFV70 showed ideal antioxidant properties, with the DPPH scavenging rate in vitro reaching 74.55%. In vivo rat liver hemostasis experiments confirmed that HFV70 showed rapid and effective hemostasis, with effects comparable to those of commercial gelatin sponges. Furthermore, when applied to the repair of full-thickness skin defects in a rat model, HFV70 significantly promoted tissue regeneration. Histological analysis further confirmed the improved pro-angiogenic and anti-inflammatory activity of HFV70 in vivo. Collectively, our results demonstrated the potential of HFV70 in the treatment of full-thickness skin defects and rapid hemostasis.
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Affiliation(s)
- Yufan Zhu
- Department of Spine Surgery and Musculoskeletal Tumor, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Feixiang Chen
- Department of Biomedical Engineering and Hubei Province Key Laboratory of Allergy and Immune Related Diseases, School of Basic Medical Sciences, Wuhan University, Wuhan, China
| | - Minhao Wu
- Department of Spine Surgery and Musculoskeletal Tumor, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Jieyu Xiang
- Department of Plastic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Feifei Yan
- Department of Spine Surgery and Musculoskeletal Tumor, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Yuanlong Xie
- Department of Spine Surgery and Musculoskeletal Tumor, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Zan Tong
- Department of Biomedical Engineering and Hubei Province Key Laboratory of Allergy and Immune Related Diseases, School of Basic Medical Sciences, Wuhan University, Wuhan, China
| | - Yun Chen
- Department of Biomedical Engineering and Hubei Province Key Laboratory of Allergy and Immune Related Diseases, School of Basic Medical Sciences, Wuhan University, Wuhan, China
- *Correspondence: Yun Chen, ; Lin Cai,
| | - Lin Cai
- Department of Spine Surgery and Musculoskeletal Tumor, Zhongnan Hospital of Wuhan University, Wuhan, China
- *Correspondence: Yun Chen, ; Lin Cai,
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Hybrid nanostructured gadolinium oxide-collagen-dextran polymeric hydrogel for corneal repair and regeneration. Int J Biol Macromol 2022; 224:1423-1438. [DOI: 10.1016/j.ijbiomac.2022.10.229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 10/13/2022] [Accepted: 10/24/2022] [Indexed: 11/05/2022]
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29
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In Vitro Antibacterial and Anti-Inflammatory Activity of Arctostaphylos uva-ursi Leaf Extract against Cutibacterium acnes. Pharmaceutics 2022; 14:pharmaceutics14091952. [PMID: 36145700 PMCID: PMC9501556 DOI: 10.3390/pharmaceutics14091952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 08/31/2022] [Accepted: 09/09/2022] [Indexed: 12/03/2022] Open
Abstract
Cutibacterium acnes (C. acnes) is the main causative agent of acne vulgaris. The study aims to evaluate the antimicrobial activity of a natural product, Arctostaphylos uva-ursi leaf extract, against C. acnes. Preliminary chemical–physical characterization of the extract was carried out by means of FT-IR, TGA and XPS analyses. Skin permeation kinetics of the extract conveyed by a toning lotion was studied in vitro by Franz diffusion cell, monitoring the permeated arbutin (as the target component of the extract) and the total phenols by HPLC and UV-visible spectrophotometry, respectively. Antimicrobial activity and time-killing assays were performed to evaluate the effects of Arctostaphylos uva-ursi leaf extract against planktonic C. acnes. The influence of different Arctostaphylos uva-ursi leaf extract concentrations on the biofilm biomass inhibition and degradation was evaluated by the crystal violet (CV) method. The 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) test was used to determine the viability of immortalized human keratinocytes (HaCaT) after exposure to Arctostaphylos uva-ursi leaf extract for 24 and 48 h. Levels of interleukin (IL)-1β, IL-6, IL-8 and tumour necrosis factor (TNF)-α were quantified after HaCaT cells cotreatment with Arctostaphylos uva-ursi leaf extract and heat-killed C. acnes. The minimum inhibitory concentration (MIC) which exerted a bacteriostatic action on 90% of planktonic C. acnes (MIC90) was 0.6 mg/mL. Furthermore, MIC and sub-MIC concentrations influenced the biofilm formation phases, recording a percentage of inhibition that exceeded 50 and 40% at 0.6 and 0.3 mg/mL. Arctostaphylos uva-ursi leaf extract disrupted biofilm biomass of 57 and 45% at the same concentrations mentioned above. Active Arctostaphylos uva-ursi leaf extract doses did not affect the viability of HaCaT cells. On the other hand, at 1.25 and 0.6 mg/mL, complete inhibition of the secretion of pro-inflammatory cytokines was recorded. Taken together, these results indicate that Arctostaphylos uva-ursi leaf extract could represent a natural product to counter the virulence of C. acnes, representing a new alternative therapeutic option for the treatment of acne vulgaris.
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Silver Nanoparticles Conjugated with Colistin Enhanced the Antimicrobial Activity against Gram-Negative Bacteria. Molecules 2022; 27:molecules27185780. [PMID: 36144516 PMCID: PMC9505607 DOI: 10.3390/molecules27185780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 09/02/2022] [Accepted: 09/05/2022] [Indexed: 11/16/2022] Open
Abstract
Colistin is a potent peptide antibiotic that is effective against Gram-negative bacteria. However, nephrotoxicity limited its clinical use. Silver nanoparticles (AgNPs) have gained attention as a potential antimicrobial agent and nanodrug carrier. The conjugation of antibiotics and AgNPs has been found to increase the activity and decrease drug toxicity. In this study, colistin was conjugated with AgNPs (Col-AgNPs), which was confirmed by Fourier-transform infrared (FT-IR) and energy-dispersive X-ray (EDX) spectra. The optimized Col-AgNPs had the proper characteristics, including spherical shape, monodispersity, nanosized particle, high surface charge, and good stability. The powder X-ray diffraction (PXRD) pattern supported the crystallinity of Col-AgNPs and AgNPs. The drug loading of Col-AgNPs was 11.55 ± 0.93%. Col-AgNPs had higher activity against Gram-negative bacteria (Escherichia coli, Klebsiella pneumonia, and Pseudomonas aeruginosa) than AgNPs and colistin. The mechanism of actions of Col-AgNPs involved membrane disruption and genomic DNA damage. The Col-AgNPs and AgNPs were biocompatible with human red blood cells and renal cells at concentrations up to 16 µg/mL. Interestingly, Col-AgNPs exhibited higher cell survival than AgNPs and colistin at 32 µg/mL. Our results revealed that the Col-AgNPs could enhance the antimicrobial activity and cell biocompatibility more than colistin and AgNPs.
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31
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Alsaggar M, Al-Hazabreh M, Al-Tall Y, Al-Tarawneh A, Masadeh M. HAZ, A NOVEL PEPTIDE WITH BROAD-SPECTRUM ANTIBACTERIAL ACTIVITY. Saudi Pharm J 2022; 30:1652-1658. [DOI: 10.1016/j.jsps.2022.09.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 09/09/2022] [Indexed: 11/16/2022] Open
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Irfan I, Ali A, Reddi B, Khan MA, Hasan P, Ahmed S, Uddin A, Piatek M, Kavanagh K, Haque QMR, Singh S, Addlagatta A, Abid M. Design, Synthesis and Mechanistic Studies of Novel Isatin-Pyrazole Hydrazone Conjugates as Selective and Potent Bacterial MetAP Inhibitors. Antibiotics (Basel) 2022; 11:antibiotics11081126. [PMID: 36009995 PMCID: PMC9405123 DOI: 10.3390/antibiotics11081126] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 08/13/2022] [Accepted: 08/16/2022] [Indexed: 11/16/2022] Open
Abstract
Methionine aminopeptidases (MetAPs) are attractive drug targets due to their essential role in eukaryotes as well as prokaryotic cells. In this study, biochemical assays were performed on newly synthesized Isatin-pyrazole hydrazones (PS1–14) to identify potent and selective bacterial MetAPs inhibitors. Compound PS9 inhibited prokaryotic MetAPs, i.e., MtMetAP1c, EfMetAP1a and SpMetAP1a with Ki values of 0.31, 6.93 and 0.37 µM, respectively. Interestingly, PS9 inhibited the human analogue HsMetAP1b with Ki (631.7 µM) about ten thousand-fold higher than the bacterial MetAPs. The in vitro screening against Gram-positive (Enterococcus faecalis, Bacillus subtilis and Staphylococcus aureus) and Gram-negative (Pseudomonas aeruginosa, Klebsiella pneumonia and Escherichia coli) bacterial strains also exhibited their antibacterial potential supported by minimum bactericidal concentration (MBC), disk diffusion assay, growth curve and time-kill curve experiments. Additionally, PS6 and PS9 had synergistic effects when combined with ampicillin (AMP) and ciprofloxacin (CIP) against selective bacterial strains. PS9 showed no significant cytotoxic effect on human RBCs, HEK293 cells and Galleria mellonella larvae in vivo. PS9 inhibited the growth of multidrug-resistant environmental isolates as it showed the MIC lower than the standard drugs used against selective bacterial strains. Overall, the study suggested PS9 could be a useful candidate for the development of antibacterial alternatives.
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Affiliation(s)
- Iram Irfan
- Department of Biosciences, Jamia Millia Islamia, Jamia Nagar, New Delhi 110025, India
| | - Asghar Ali
- Department of Biosciences, Jamia Millia Islamia, Jamia Nagar, New Delhi 110025, India
| | - Bharati Reddi
- Division of Applied Biology, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Mohd. Abrar Khan
- Department of Biosciences, Jamia Millia Islamia, Jamia Nagar, New Delhi 110025, India
| | - Phool Hasan
- Department of Biosciences, Jamia Millia Islamia, Jamia Nagar, New Delhi 110025, India
| | - Sarfraz Ahmed
- Department of Biosciences, Jamia Millia Islamia, Jamia Nagar, New Delhi 110025, India
| | - Amad Uddin
- Department of Biosciences, Jamia Millia Islamia, Jamia Nagar, New Delhi 110025, India
- Host-Parasite Interaction Biology Laboratory, Special Centre for Molecular Medicine, Jawaharlal Nehru University, New Delhi 110067, India
| | - Magdalena Piatek
- Department of Biology, Maynooth University, Maynooth, Co., W23F2H6 Kildare, Ireland
| | - Kevin Kavanagh
- Department of Biology, Maynooth University, Maynooth, Co., W23F2H6 Kildare, Ireland
| | | | - Shailja Singh
- Host-Parasite Interaction Biology Laboratory, Special Centre for Molecular Medicine, Jawaharlal Nehru University, New Delhi 110067, India
| | - Anthony Addlagatta
- Division of Applied Biology, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
- Correspondence: (A.A.); (M.A.)
| | - Mohammad Abid
- Department of Biosciences, Jamia Millia Islamia, Jamia Nagar, New Delhi 110025, India
- Correspondence: (A.A.); (M.A.)
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Novel luteolin@pro-phytomicelles: In vitro characterization and in vivo evaluation of protection against drug-induced hepatotoxicity. Chem Biol Interact 2022; 365:110095. [PMID: 35970426 DOI: 10.1016/j.cbi.2022.110095] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 08/05/2022] [Accepted: 08/05/2022] [Indexed: 11/18/2022]
Abstract
A novel nanoformulation with the small molecule phytochemical dipotassium glycyrrhizinate as a nanomaterial was developed for the oral delivery of luteolin (Lut), a widely used phytochemical, but it suffered from poor water solubility and low oral bioavailability. This novel nanoformulation, named Lut@pro-phytomicelles, can be fabricated with a simple process. Lut@pro-phytomicelles can instantly dissolve into aqueous mediums and formulate through self-assembly a clear phytomicelle solution with a Lut encapsulation efficiency of 99.16 ± 0.90%, a small micelle size of 30.32 ± 0.12 nm, and a narrow polydispersity index of 0.138 ± 0.024. The optimized formulation demonstrated that Lut had solubility in up to 50 mg/ml of water as a result of its encapsulation within DG phytomicelles. Lut@pro-phytomicelles exhibited excellent characteristics, including good storage stability, a fast in vitro release profile, improvement in in vitro antioxidant activity, and high safety potential. In the oral bioavailability evaluation, a shorter Tmax, increased Cmax, and improved AUC0-t were obtained with Lut@pro-phytomicelles when compared to bare Lut. The distribution evaluation further showed that Lut@pro-phytomicelles could effectively increase the concentrations of Lut in all the tested organs and gastrointestinal segments. In the protection efficacy evaluation, 100 mg/kg Lut@pro-phytomicelles demonstrated strong effects against acetaminophen-induced hepatotoxicity. The mechanisms of inhibiting high-mobility group box 1 signaling and suppressing oxidative stress were involved in this strong treatment effect. These results showed that simple but novel Lut@pro-phytomicelles provided a new, promising nano-delivery system for Lut with a significantly improved in vivo profile.
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Effect of α-Tocopheryloxy Acetic Acid on the Infection of Mice with Plasmodium berghei ANKA In Vivo and Humans with P. falciparum In Vitro. Acta Parasitol 2022; 67:1514-1520. [PMID: 35951222 DOI: 10.1007/s11686-022-00604-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 07/21/2022] [Indexed: 11/01/2022]
Abstract
PURPOSE Malarial parasites are susceptible to oxidative stress. The effects of α-tocopheryloxy acetic acid (α-TEA), a vitamin E analog, on infection by Plasmodium berghei ANKA and P. falciparum in mice and human red blood cells (RBCs), respectively, were examined in this study. METHODS For in vivo studies in mice, RBCs infected with P. berghei ANKA were inoculated via intraperitoneal injection and α-TEA was administered to C57BL/6 J male mice after infection. The blood-brain barrier (BBB) permeability was examined by Evans blue staining in experimental cerebral malaria at 7 days after infection. The in vitro inhibitory effect of α-TEA on P. falciparum 3D7 (chloroquine-sensitive strain) and K1 (multidrug-resistant strain) was tested using a SYBR Green I-based assay. RESULTS When 1.5% α-TEA was administered for 14 days after infection, 88% of P. berghei ANKA-infected mice survived during the experimental period. Nevertheless, all the control mice died within 12 days of infection. Furthermore, the Evans blue intensity in α-TEA-treated mice brains was less than that in untreated mice, indicating that α-TEA might inhibit the destruction of the BBB and progression of cerebral malaria. The in vitro experiment revealed that α-TEA inhibited the proliferation of both the 3D7 and K1 strains. CONCLUSION This study showed that α-TEA is effective against murine and human malaria in vivo and in vitro, respectively. Although α-TEA alone has a sufficient antimalarial effect, future research could focus on the structure-activity relationship to achieve better pharmacokinetics and decrease the cytotoxicity and/or the combined effect of α-TEA with existing drugs. In addition, the prophylactic antimalarial activity of premedication with α-TEA may also be an interesting perspective in the future.
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Veider F, Akkuş-Dağdeviren ZB, Knoll P, Bernkop-Schnürch A. Design of nanostructured lipid carriers and solid lipid nanoparticles for enhanced cellular uptake. Int J Pharm 2022; 624:122014. [PMID: 35850184 DOI: 10.1016/j.ijpharm.2022.122014] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 07/06/2022] [Accepted: 07/08/2022] [Indexed: 11/27/2022]
Abstract
In this study PEG-free and zeta potential changing lipid-based nanocarriers providing enhanced cellular uptake were developed. Nanostructured lipid carriers (NLC), consisting of paraffin wax, caprylic/ capric triglyceride, cetyltrimethylammoniumchloride and either soy lecithin or polyglycerol-4 laurate and solid lipid nanoparticles (SLN) with the same composition but without the liquid lipid content were developed. All formulations exposed a positive surface charge and were then coated with the polyphosphate Graham's salt. Phosphate release from these formulations was evaluated by incubation with intestinal alkaline phosphatase as well as on a Caco-2 monolayer and zeta potentials were measured. Additionally, cellular uptake studies were performed. Within 5 h, a remarkable amount of phosphate was released from all formulations incubated with intestinal alkaline phosphatase. Enzymatically induced phosphate release with intestinal alkaline phosphatase led to a zeta potential shift up to Δ 26 mV. Results of phosphate release and zeta potential change were confirmed on Caco-2 cells. Cellular uptake studies on Caco-2 cells showed an up to 5.6-times higher uptake compared to cells with inhibited phosphatase. According to these results, polyphosphate coating is a powerful tool to obtain lipid-based nanocarriers for enhanced cellular uptake.
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Affiliation(s)
- Florina Veider
- Center for Chemistry and Biomedicine, Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria
| | - Zeynep Burcu Akkuş-Dağdeviren
- Center for Chemistry and Biomedicine, Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria
| | - Patrick Knoll
- Center for Chemistry and Biomedicine, Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria
| | - Andreas Bernkop-Schnürch
- Center for Chemistry and Biomedicine, Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria.
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Wang Y, Khalenkov A, Scott DE. An optimized microplate-based method to evaluate complement-dependent hemolysis mediated by intravenous immunoglobulins (IVIG). Biologicals 2022; 78:1-9. [PMID: 35842374 DOI: 10.1016/j.biologicals.2022.06.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Revised: 05/12/2022] [Accepted: 06/24/2022] [Indexed: 11/30/2022] Open
Abstract
Hemolytic reactions can cause serious complications after administration of Intravenous Immunoglobulin (IVIG), due to passive transfer of anti-A and anti-B IgG antibodies (isoagglutinins). A maximum allowable amount of isoagglutinins is established in the US and EU for licensed IVIG, as measured by a specified direct hemagglutination test (DHAT). Despite this limit, reports of hemolysis have increased over time, raising the question of how well the DHAT predicts clinically significant hemolysis. This study was undertaken to develop a microplate-based complement-dependent hemolysis assay (CDHA) that reproducibly measures functional hemolytic activity of IVIG, for assessment of IVIG products. An IVIG working reference reagent (NIBSC 14/160) was qualified as an assay control and for quantitation purposes. Hemolytic activities of 36 IVIG product lots encompassing seven brands and including 6 clinically hemolytic lots were measured. Hemolytic activity varied among IVIG product brands, and to a lesser extent, from lot-to-lot for individual brands. Correlation between the CDHA and DHAT was not robust which may reflect imprecision of the DHAT method or additional variables that influence complement-dependent hemolysis after opsonization. In conclusion, the CDHA provides a simple, specific, and sensitive tool for IVIG product characterization and investigation of hemolytic events by manufacturers, researchers, and regulatory authorities.
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Affiliation(s)
- Yonggang Wang
- Office of Tissues and Advanced Therapies, Center for Biologics Evaluation and Research, U.S. Food and Drug Administration, Silver Spring, MD, USA.
| | - Alexey Khalenkov
- Office of Tissues and Advanced Therapies, Center for Biologics Evaluation and Research, U.S. Food and Drug Administration, Silver Spring, MD, USA
| | - Dorothy E Scott
- Office of Tissues and Advanced Therapies, Center for Biologics Evaluation and Research, U.S. Food and Drug Administration, Silver Spring, MD, USA.
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Bayat F, Motevalli Haghi A, Nateghpour M, Rahimi-Esboei B, Rahimi Foroushani A, Amani A, Farivar L, Sayyad Talaee Z, Faryabi A. Cytotoxicity and Anti- Plasmodium berghei Activity of Emodin Loaded Nanoemulsion. IRANIAN JOURNAL OF PARASITOLOGY 2022; 17:339-348. [PMID: 36466013 PMCID: PMC9682369 DOI: 10.18502/ijpa.v17i3.10624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Accepted: 04/12/2022] [Indexed: 06/17/2023]
Abstract
BACKGROUND Malaria parasites cause a tremendous burden of disease in both the tropics and subtropics areas. Growing of drugs resistance in parasites is one of the most threats to malaria control. The aim of study was to investigate the anti-malarial activity of nano-emodin isolated from Rhamnus cathartica on Plasmodium berghei in mice to evaluate parasites inhibition rate using in-vivo test. METHODS The study was conducted in the School of Public Health, Tehran University of Medical Sciences, during 2020. Nano-emodin particles were prepared from Rhamnus cathartica, and confirmed by Zeta Potential Analyzer, DLS and electron microscopy techniques. Mice were infected with P. berghei and treated by emodin nano-particles. Parasitemia was evaluated in each group in comparison with control group. Toxicity test was done using twice the highest concentration of emodin extract on a separate group of mice and ED50 was calculated. RESULTS Emodin extract was significantly effective in all concentrations on D4 (P<0.05). The most effective on parasitemia was observed in 400 mg/kg of Liquid Nano-emodin and solid (non-Nano) emodin. ED50 for emodin extract was determined 220 mg/kg. Toxicity test showed no toxic effect on the subjects. CONCLUSION The emodin extract is safe, lack of side effects. So, it can be used for more and longer period of time and in higher doses. Emodin extract, either in form of liquid and nanoparticle or in a solid form, has the same therapeutic effect on P. berghei in infected Balb/c mice.
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Affiliation(s)
- Fatemeh Bayat
- Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Afsaneh Motevalli Haghi
- Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Mehdi Nateghpour
- Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Bahman Rahimi-Esboei
- Department of Medical Parasitology and Mycology, School of Medicine, Tonekabon Branch, Islamic Azad University, Tonekabon, Iran
| | - Abbas Rahimi Foroushani
- Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Amir Amani
- Department of Natural Products and Medicinal Plants Research Center, North Khorasan University of Medical Sciences, Bojnurd, Iran
| | - Leila Farivar
- Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Zahra Sayyad Talaee
- Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Aref Faryabi
- Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
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Singh V, Hada RS, Jain R, Vashistha M, Kumari G, Singh S, Sharma N, Bansal M, Poonam, Zoltner M, Caffrey CR, Rathi B, Singh S. Designing and development of phthalimides as potent anti-tubulin hybrid molecules against malaria. Eur J Med Chem 2022; 239:114534. [PMID: 35749989 DOI: 10.1016/j.ejmech.2022.114534] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 06/06/2022] [Accepted: 06/11/2022] [Indexed: 11/03/2022]
Abstract
Constant emergence of drug-resistant Plasmodium falciparum warrants urgent need for effective and inexpensive drugs. Herein, phthalimide (Pht) analogs possessing the bioactive scaffolds, benzimidazole and 1,2,3-triazole, were evaluated for in vitro and in vivo anti-plasmodial activity without any apparent hemolysis, or cytotoxicity. Analogs 4(a-e) inhibited the growth of 3D7 and RKL-9 strains at submicromolar concentrations. Defects were observed during parasite egress from or invasion of the red blood cells. Mitochondrial membrane depolarization was measured as one of the causes of cell death. Phts 4(a-e) in combination with artemisinin exhibited two-to three-fold increased efficacy. Biophysical and biochemical analysis suggest that Pht analogs mediate plasmodial growth inhibition by interacting with tubulin protein of the parasite. Lastly, Phts 4(a-e) significantly decreased parasitemia and extended host survival in murine model Plasmodium berghei ANKA infection. Combined, the data indicate that Pht analogs should be further explored, which could offer novel value to the antimalarial drug development pipeline.
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Affiliation(s)
- Vigyasa Singh
- Special Centre for Molecular Medicine, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Rahul Singh Hada
- Department of Life Sciences, Shiv Nadar University, Gautam Buddha Nagar, UP, 201314, India
| | - Ravi Jain
- Special Centre for Molecular Medicine, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Manu Vashistha
- Advanced Instrumentation Research Facility, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Geeta Kumari
- Special Centre for Molecular Medicine, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Snigdha Singh
- Laboratory for Translational Chemistry and Drug Discovery, Department of Chemistry, Hansraj College, University of Delhi, Delhi, 110007, India
| | - Neha Sharma
- Laboratory for Translational Chemistry and Drug Discovery, Department of Chemistry, Hansraj College, University of Delhi, Delhi, 110007, India
| | - Meenakshi Bansal
- Laboratory for Translational Chemistry and Drug Discovery, Department of Chemistry, Hansraj College, University of Delhi, Delhi, 110007, India
| | - Poonam
- Department of Chemistry, Miranda House, University of Delhi, Delhi, 110007, India; Delhi School of Public Health, Institute of Eminence, University of Delhi, Delhi, 110007, India
| | - Martin Zoltner
- Drug Discovery and Evaluation Unit, Department of Parasitology, Faculty of Science, Charles University, BIOCEV, Vestec, Czech Republic
| | - Conor R Caffrey
- Center for Discovery and Innovation in Parasitic Diseases, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093, USA
| | - Brijesh Rathi
- Laboratory for Translational Chemistry and Drug Discovery, Department of Chemistry, Hansraj College, University of Delhi, Delhi, 110007, India; Delhi School of Public Health, Institute of Eminence, University of Delhi, Delhi, 110007, India.
| | - Shailja Singh
- Special Centre for Molecular Medicine, Jawaharlal Nehru University, New Delhi, 110067, India.
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Ortiz-Rodríguez T, Mendoza-Acosta F, Martínez-Zavala SA, Salcedo-Hernández R, Casados-Vázquez LE, Bideshi DK, Barboza-Corona JE. Thurincin H Is a Nonhemolytic Bacteriocin of Bacillus thuringiensis with Potential for Applied Use. Probiotics Antimicrob Proteins 2022:10.1007/s12602-022-09952-2. [PMID: 35610496 DOI: 10.1007/s12602-022-09952-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/10/2022] [Indexed: 11/24/2022]
Abstract
Thurincin H, a bacteriocin produced by Bacillus thuringiensis, exhibits antibacterial activity against Gram-positive and Gram-negative bacteria. While much is known about its expression and antimicrobial spectrum, its hemolytic property has yet to be established. In this study, thurincin H was produced in a plasmid-free acrystalliferous strain of B. thuringiensis (Bt Cry-B) that naturally lacked antimicrobial and hemolytic activities. When grown in Tryptic Soy Broth (TSB), the bacteriocin's maximal production in Bt Cry-B harboring the thurincin H genetic cluster (Bt Cry-B/pThur) was observed at 24 h. Thurincin H was purified as a sole peptide of ~5 kDa using three purification steps, i.e., salt precipitation, ultrafiltration, and gel filtration chromatography. The bacteriocin showed inhibitory activity against B. cereus (5631 U), Bt Cry-B (8827 U), E. faecium wild type (11,197 U), and E. faecium ATCC 19,434 (6950 U), but not against Bt Cry-B/pThurH and Bt Cry-B/pThurHΔThnA. In addition, a minimum inhibitory concentration (MIC) of 5.0 μg/mL against B. cereus 183 was observed. In silico predictions suggested that thuricin H lacks hemolytic activity, which was validated in vitro using 4 × the MIC, i.e., 20 μg/ml. Our data lay a foundation for the potential safe use of thurincin H as an antibacterial peptide for medical use, in food products, and for expression in probiotic bacteria.
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Affiliation(s)
- Tomás Ortiz-Rodríguez
- Posgrado en Biociencias, Universidad de Guanajuato Campus Irapuato-Salamanca, División de Ciencias de la Vida, Irapuato, Guanajuato, 36500, México
| | - Fernanda Mendoza-Acosta
- Posgrado en Biociencias, Universidad de Guanajuato Campus Irapuato-Salamanca, División de Ciencias de la Vida, Irapuato, Guanajuato, 36500, México
| | - Sheila A Martínez-Zavala
- Posgrado en Biociencias, Universidad de Guanajuato Campus Irapuato-Salamanca, División de Ciencias de la Vida, Irapuato, Guanajuato, 36500, México
| | - Rubén Salcedo-Hernández
- Posgrado en Biociencias, Universidad de Guanajuato Campus Irapuato-Salamanca, División de Ciencias de la Vida, Irapuato, Guanajuato, 36500, México.,Departamento de Alimentos, Universidad de Guanajuato Campus Irapuato-Salamanca, División de Ciencias de la Vida, Irapuato, Guanajuato, 36500, México
| | - Luz E Casados-Vázquez
- Posgrado en Biociencias, Universidad de Guanajuato Campus Irapuato-Salamanca, División de Ciencias de la Vida, Irapuato, Guanajuato, 36500, México.,Departamento de Alimentos, Universidad de Guanajuato Campus Irapuato-Salamanca, División de Ciencias de la Vida, Irapuato, Guanajuato, 36500, México.,CONACYT- Universidad de Guanajuato, Campus Irapuato-Salamanca, Irapuato, Guanajuato, 36500, México
| | - Dennis K Bideshi
- Department of Biological Sciences, California Baptist University, 8432 Magnolia Avenue, Riverside, CA, 92504, USA
| | - José E Barboza-Corona
- Posgrado en Biociencias, Universidad de Guanajuato Campus Irapuato-Salamanca, División de Ciencias de la Vida, Irapuato, Guanajuato, 36500, México. .,Departamento de Alimentos, Universidad de Guanajuato Campus Irapuato-Salamanca, División de Ciencias de la Vida, Irapuato, Guanajuato, 36500, México.
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In vitro evaluation of antioxidant activity and biocompatibility of caffeic acid phenethyl ester loaded in polymeric micelles. Mol Cell Toxicol 2022. [DOI: 10.1007/s13273-022-00244-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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The Biological Effectsof Polystyrene Nanoplasticson Human Peripheral Blood Lymphocytes. NANOMATERIALS 2022; 12:nano12101632. [PMID: 35630854 PMCID: PMC9143123 DOI: 10.3390/nano12101632] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 04/05/2022] [Accepted: 04/13/2022] [Indexed: 02/04/2023]
Abstract
Environmental exposure to microplastics (MPs) and nanoplastics (NPs) is an increasing concern from human health perspectives. Little information on the genotoxic and cytotoxic potential of NP particles in human cells is available. We aimed to assess the cytotoxic and genotoxic potential of polystyrene nanoplastics (PSNPs) at different concentrations (2000μg/mL, 1000μg/mL, and 500μg/mL) by using chromosomal aberration (CA) and cytokinesis-block micronucleus assays (CBMN) on human peripheral lymphocytes. Dose-dependent hemolytic activity and cell viability were observed against the PSNPs exposure. Increased chromosomal aberrations, such as chromosomal breaks and dicentric chromosomes, and an increase in nucleoplasmic bridge (NBP) formation and nuclear budding (NBUD) were observed. The frequency of mitotic index (MI) decreased significantly in the PSNP-exposed groups from lower to higher concentrations. A significant increase in micronuclei (MN) formation and cytostasis% and a dose-dependent reduction in nuclear division index (NDI) in PSNP-exposed groups indicated oxidative stress-mediated cytotoxicity, DNA damage, and genomic instabilities due to PSNP exposure in human lymphocyte cells. This study highlights the importance of understanding the toxic mechanisms and associated chronic and acute health effects on humans due to exposure to this pervasive environmental pollutant.
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Mitri N, Rahme K, Fracasso G, Ghanem E. Human blood biocompatibility and immunogenicity of scFvD2B PEGylated gold nanoparticles. NANOTECHNOLOGY 2022; 33:315101. [PMID: 35417900 DOI: 10.1088/1361-6528/ac66ef] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Accepted: 04/13/2022] [Indexed: 06/14/2023]
Abstract
Single chain variable D2B antibody fragments (scFvD2Bs) exhibit high affinity binding to prostate specific membrane antigens overexpressed in metastatic prostate cancer (PC). Conjugation of scFvD2B to gold nanoparticles (AuNPs) would enhance its stability and plasma half-life circulation to shuttle theranostic agents in PC. In this study, we synthesized PEGylated scFvD2B-AuNPs (AuNPs-scFvD2B-PEG) and tested their integrity, biocompatibility, and immunogenicity in freshly withdrawn human blood. Prior to blood incubation, Zeta potential measurements, UV-Vis spectroscopy, and dynamic light scattering (DLS) were used to assess the physicochemical properties of our nano-complexes in the presence or absence of PEGylation. A surface plasmon resonance band shift of 2 and 4 nm confirmed the successful coating for AuNPs-scFvD2B and AuNPs-scFvD2B-PEG, respectively. Likewise, DLS revealed a size increase of ∼3 nm for AuNPs-scFvD2B and ∼19 nm for AuNPs-scFvD2B-PEG. Zeta potential increased from -34 to -19 mV for AuNPs-scFvD2B and reached -3 mV upon PEGylation. Similar assessment measures were applied post-incubation in human blood with additional immunogenicity tests, such as hemolysis assay, neutrophil function test, and pyridine formazan extraction. Interestingly, grafting PEG chains on AuNPs-scFvD2B precluded the binding of blood plasma proteins and reduced neutrophil activation level compared with naked AuNPs-citrate counterparts. Most likely, a hydrated negative PEG cloud shielded the NPs rendering blood compatiblility with less than 10% hemolysis. In conclusion, the biocompatible AuNPs-scFvD2B-PEG presents promising characteristics for PC targeted therapy, with minimal protein adsorption affinity, low immunorecognition, and reduced hemolytic activity.
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Affiliation(s)
- Nadim Mitri
- Department of Sciences, Faculty of Natural and Applied Sciences, Notre Dame University-Louaize, Zouk Mosbeh, PO Box: 72, Lebanon
| | - Kamil Rahme
- Department of Sciences, Faculty of Natural and Applied Sciences, Notre Dame University-Louaize, Zouk Mosbeh, PO Box: 72, Lebanon
| | | | - Esther Ghanem
- Department of Sciences, Faculty of Natural and Applied Sciences, Notre Dame University-Louaize, Zouk Mosbeh, PO Box: 72, Lebanon
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Carson CS, Becker KW, Garland KM, Pagendarm HM, Stone PT, Arora K, Wang-Bishop L, Baljon JJ, Cruz LD, Joyce S, Wilson JT. A nanovaccine for enhancing cellular immunity via cytosolic co-delivery of antigen and polyIC RNA. J Control Release 2022; 345:354-370. [PMID: 35301055 PMCID: PMC9133199 DOI: 10.1016/j.jconrel.2022.03.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 02/11/2022] [Accepted: 03/10/2022] [Indexed: 12/15/2022]
Abstract
Traditional approaches to cancer vaccines elicit weak CD8+ T cell responses and have largely failed to meet clinical expectations. This is in part due to inefficient antigen cross-presentation, inappropriate selection of adjuvant and its formulation, poor vaccine pharmacokinetics, and/or suboptimal coordination of antigen and adjuvant delivery. Here, we describe a nanoparticle vaccine platform for facile co-loading and dual-delivery of antigens and nucleic acid adjuvants that elicits robust antigen-specific cellular immune responses. The nanovaccine design is based on diblock copolymers comprising a poly(ethylene glycol)-rich first block that is functionalized with reactive moieties for covalent conjugation of antigen via disulfide linkages, and a pH-responsive second block for electrostatic packaging of nucleic acids that also facilitates endosomal escape of associated vaccine cargo to the cytosol. Using polyIC, a clinically-advanced nucleic acid adjuvant, we demonstrated that endosomolytic nanoparticles promoted the cytosolic co-delivery of polyIC and protein antigen, which acted synergistically to enhance antigen cross-presentation, co-stimulatory molecule expression, and cytokine production by dendritic cells. We also found that the vaccine platform increased the accumulation of antigen and polyIC in the local draining lymph nodes. Consequently, dual-delivery of antigen and polyIC with endsomolytic nanoparticles significantly enhanced the magnitude and functionality of CD8+ T cell responses relative to a mixture of antigen and polyIC, resulting in inhibition of tumor growth in a mouse tumor model. Collectively, this work provides a proof-of-principle for a new cancer vaccine platform that strongly augments anti-tumor cellular immunity via cytosolic co-delivery of antigen and nucleic acid adjuvant.
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Affiliation(s)
- Carcia S Carson
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN 37235, USA
| | - Kyle W Becker
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, TN 37235, USA
| | - Kyle M Garland
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, TN 37235, USA
| | - Hayden M Pagendarm
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN 37235, USA
| | - Payton T Stone
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, TN 37235, USA
| | - Karan Arora
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, TN 37235, USA
| | - Lihong Wang-Bishop
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, TN 37235, USA
| | - Jessalyn J Baljon
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN 37235, USA; Department of Veterans Affairs Tennessee Valley Healthcare System, Nashville, TN 37212, USA
| | - Lorena D Cruz
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, TN 37235, USA
| | - Sebastian Joyce
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN 37232, USA; Department of Veterans Affairs Tennessee Valley Healthcare System, Nashville, TN 37212, USA; Vanderbilt Institute for Infection, Immunology, and Inflammation, Vanderbilt University Medical Center, Nashville, TN 37232, USA; Vanderbilt Center for Immunobiology, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - John T Wilson
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN 37235, USA; Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, TN 37235, USA; Vanderbilt Institute for Infection, Immunology, and Inflammation, Vanderbilt University Medical Center, Nashville, TN 37232, USA; Vanderbilt Center for Immunobiology, Vanderbilt University Medical Center, Nashville, TN 37232, USA; Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN 37232, USA; Vanderbilt Institute of Chemical Biology, Vanderbilt University Medical Center, Nashville, TN 37232, USA.
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Hamadani CM, Chandrasiri I, Yaddehige ML, Dasanayake GS, Owolabi I, Flynt A, Hossain M, Liberman L, Lodge TP, Werfel TA, Watkins DL, Tanner EEL. Improved nanoformulation and bio-functionalization of linear-dendritic block copolymers with biocompatible ionic liquids. NANOSCALE 2022; 14:6021-6036. [PMID: 35362493 DOI: 10.1039/d2nr00538g] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Linear-dendritic block copolymers (LDBCs) have emerged as promising materials for drug delivery applications, with their hybrid structure exploiting advantageous properties of both linear and dendritic polymers. LDBCs have promising encapsulation efficiencies that can be used to encapsulate both hydrophobic and hydrophilic dyes for bioimaging, cancer therapeutics, and small biomolecules. Additionally, LDBCS can be readily functionalized with varying terminal groups for more efficient targeted delivery. However, depending on structural composition and surface properties, LDBCs also exhibit high dispersities (Đ), poor shelf-life, and potentially high cytotoxicity to non-target interfacing blood cells during intravenous drug delivery. Here, we show that choline carboxylic acid-based ionic liquids (ILs) electrostatically solvate LDBCs by direct dissolution and form stable and biocompatible IL-integrated LDBC nano-assemblies. These nano-assemblies are endowed with red blood cell-hitchhiking capabilities and show altered cellular uptake behavior ex vivo. When modified with choline and trans-2-hexenoic acid, IL-LDBC dispersity dropped by half compared to bare LDBCs, and showed a significant shift of the cationic surface charge towards neutrality. Proton nuclear magnetic resonance spectroscopy evidenced twice the total amount of IL on the LDBCs relative to an established IL-linear PLGA platform. Transmission electron microscopy suggested the formation of a nanoparticle surface coating, which acted as a protective agent against RBC hemolysis, reducing hemolysis from 73% (LDBC) to 25% (IL-LDBC). However, dramatically different uptake behavior of IL-LDBCs vs. IL-PLGA NPs in RAW 264.7 macrophage cells suggests a different conformational IL-NP surface assembly on the linear versus the linear-dendritic nanoparticles. These results suggest that by controlling the physical chemistry of polymer-IL interactions and assembly on the nanoscale, biological function can be tailored toward the development of more effective and more precisely targeted therapies.
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Affiliation(s)
- Christine M Hamadani
- Department of Chemistry & Biochemistry, The University of Mississippi, University, MS 38677, USA.
| | - Indika Chandrasiri
- Department of Chemistry & Biochemistry, The University of Mississippi, University, MS 38677, USA.
| | - Mahesh Loku Yaddehige
- Department of Chemistry & Biochemistry, The University of Mississippi, University, MS 38677, USA.
| | - Gaya S Dasanayake
- Department of Chemistry & Biochemistry, The University of Mississippi, University, MS 38677, USA.
| | - Iyanuoluwani Owolabi
- Department of Biological Sciences, The University of Southern Mississippi, Hattiesburg, Mississippi, 39406, USA
| | - Alex Flynt
- Department of Biological Sciences, The University of Southern Mississippi, Hattiesburg, Mississippi, 39406, USA
| | - Mehjabeen Hossain
- Department of BioMolecular Sciences, The University of Mississippi, University, MS 38677, USA
| | - Lucy Liberman
- Department of Chemical Engineering & Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, USA
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - Timothy P Lodge
- Department of Chemical Engineering & Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, USA
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - Thomas A Werfel
- Department of Biomedical Engineering, The University of Mississippi, University, MS 38677, USA
- Department of Chemical Engineering, The University of Mississippi, University, MS 38677, USA
- Department of BioMolecular Sciences, The University of Mississippi, University, MS 38677, USA
| | - Davita L Watkins
- Department of Chemistry & Biochemistry, The University of Mississippi, University, MS 38677, USA.
| | - Eden E L Tanner
- Department of Chemistry & Biochemistry, The University of Mississippi, University, MS 38677, USA.
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Darnowski MG, Lanosky TD, Labana P, Brazeau-Henrie JT, Calvert ND, Dornan MH, Natola C, Paquette AR, Shuhendler AJ, Boddy CN. Armeniaspirol analogues with more potent Gram-positive antibiotic activity show enhanced inhibition of the ATP-dependent proteases ClpXP and ClpYQ. RSC Med Chem 2022; 13:436-444. [PMID: 35647545 PMCID: PMC9020616 DOI: 10.1039/d1md00355k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Accepted: 02/07/2022] [Indexed: 11/21/2022] Open
Abstract
Antibiotics with fundamentally new mechanisms of action such as the armeniaspirols, which target the ATP-dependent proteases ClpXP and ClpYQ, must be developed to combat antimicrobial resistance. While the mechanism of action of armeniaspirol against Gram-positive bacteria is understood, little is known about the structure-activity relationship for its antibiotic activity. Based on the preliminary data showing that modifications of armeniaspirol's N-methyl group increased antibiotic potency, we probed the structure-activity relationship of N-alkyl armeniaspirol derivatives. A series of focused derivatives were synthesized and evaluated for antibiotic activity against clinically relevant pathogens including methicillin-resistant Staphylococcus aureus and vancomycin-resistant Enterococcus. Replacement of the N-methyl with N-hexyl, various N-benzyl, and N-phenethyl substituents led to substantial increases in antibiotic activity and potency for inhibition of both ClpYQ and ClpXP. Docking studies identified binding models for ClpXP and ClpYQ that were consistent with the inhibition data. This work confirms the role of ClpXP and ClpYQ in the mechanism of action of armeniaspirol and provides important lead compounds for further antibiotic development.
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Affiliation(s)
- Michael G. Darnowski
- Department of Chemistry and Biomolecular Sciences, University of OttawaOttawaONK1N 6N5 Canadacboddy!uottawa.ca
| | - Taylor D. Lanosky
- Department of Chemistry and Biomolecular Sciences, University of OttawaOttawaONK1N 6N5 Canadacboddy!uottawa.ca
| | - Puneet Labana
- Department of Chemistry and Biomolecular Sciences, University of OttawaOttawaONK1N 6N5 Canadacboddy!uottawa.ca
| | - Jordan T. Brazeau-Henrie
- Department of Chemistry and Biomolecular Sciences, University of OttawaOttawaONK1N 6N5 Canadacboddy!uottawa.ca
| | - Nicholas D. Calvert
- Department of Chemistry and Biomolecular Sciences, University of OttawaOttawaONK1N 6N5 Canadacboddy!uottawa.ca
| | - Mark H. Dornan
- Department of Chemistry and Biomolecular Sciences, University of OttawaOttawaONK1N 6N5 Canadacboddy!uottawa.ca
| | - Claudia Natola
- Department of Chemistry and Biomolecular Sciences, University of OttawaOttawaONK1N 6N5 Canadacboddy!uottawa.ca
| | - André R. Paquette
- Department of Chemistry and Biomolecular Sciences, University of OttawaOttawaONK1N 6N5 Canadacboddy!uottawa.ca
| | - Adam J. Shuhendler
- Department of Chemistry and Biomolecular Sciences, University of OttawaOttawaONK1N 6N5 Canadacboddy!uottawa.ca
| | - Christopher N. Boddy
- Department of Chemistry and Biomolecular Sciences, University of OttawaOttawaONK1N 6N5 Canadacboddy!uottawa.ca
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Damasco JA, Huang SY, Perez JVD, Manongdo JAT, Dixon KA, Williams ML, Jacobsen MC, Barbosa R, Canlas GM, Chintalapani G, Melancon AD, Layman RR, Fowlkes NW, Whitley EM, Melancon MP. Bismuth Nanoparticle and Polyhydroxybutyrate Coatings Enhance the Radiopacity of Absorbable Inferior Vena Cava Filters for Fluoroscopy-Guided Placement and Longitudinal Computed Tomography Monitoring in Pigs. ACS Biomater Sci Eng 2022; 8:1676-1685. [PMID: 35343679 PMCID: PMC9045416 DOI: 10.1021/acsbiomaterials.1c01449] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Inferior vena cava filters (IVCFs) constructed with poly-p-dioxanone (PPDO) are promising alternatives to metallic filters and their associated risks and complications. Incorporating high-Z nanoparticles (NPs) improves PPDO IVCFs' radiopacity without adversely affecting their safety or performance. However, increased radiopacity from these studies are insufficient for filter visualization during fluoroscopy-guided PPDO IVCF deployment. This study focuses on the use of bismuth nanoparticles (BiNPs) as radiopacifiers to render sufficient signal intensity for the fluoroscopy-guided deployment and long-term CT monitoring of PPDO IVCFs. The use of polyhydroxybutyate (PHB) as an additional layer to increase the surface adsorption of NPs resulted in a 2-fold increase in BiNP coating (BiNP-PPDO IVCFs, 3.8%; BiNP-PPDO + PHB IVCFs, 6.2%), enabling complete filter visualization during fluoroscopy-guided IVCF deployment and, 1 week later, clot deployment. The biocompatibility, clot-trapping efficacy, and mechanical strength of the control PPDO (load-at-break, 6.23 ± 0.13 kg), BiNP-PPDO (6.10 ± 0.09 kg), and BiNP-PPDO + PHB (6.15 ± 0.13 kg) IVCFs did not differ significantly over a 12-week monitoring period in pigs. These results indicate that BiNP-PPDO + PHB can increase the radiodensity of a novel absorbable IVCF without compromising device strength. Visualizing the device under conventional radiographic imaging is key to allow safe and effective clinical translation of the device.
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Affiliation(s)
- Jossana A Damasco
- Departments of Interventional Radiology, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, United States
| | - Steven Y Huang
- Departments of Interventional Radiology, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, United States
| | - Joy Vanessa D Perez
- Departments of Interventional Radiology, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, United States
| | | | - Katherine A Dixon
- Departments of Interventional Radiology, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, United States
| | - Malea L Williams
- Departments of Interventional Radiology, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, United States
| | - Megan C Jacobsen
- Imaging Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, United States
| | - Roland Barbosa
- Covalent Metrology Sunnyvale, Sunnyvale, California 94085, United States
| | - Gino Martin Canlas
- Department of Chemistry, Lamar University, Beaumont, Texas 77710, United States
| | | | - Adam D Melancon
- Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, United States
| | - Rick R Layman
- Imaging Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, United States
| | - Natalie W Fowlkes
- Veterinary Medicine and Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, United States
| | - Elizabeth M Whitley
- Veterinary Medicine and Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, United States
| | - Marites P Melancon
- Departments of Interventional Radiology, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, United States
- UT Health Graduate School of Biomedical Sciences, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, United States
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47
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Luna-Vázquez-Gómez R, Arellano-García ME, Toledano-Magaña Y, García-Ramos JC, Radilla-Chávez P, Salas-Vargas DS, Casillas-Figueroa F, Ruiz-Ruiz B, Pestryakov A, Bogdanchikova N. Bell Shape Curves of Hemolysis Induced by Silver Nanoparticles: Review and Experimental Assay. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:1066. [PMID: 35407184 PMCID: PMC9000491 DOI: 10.3390/nano12071066] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 03/20/2022] [Accepted: 03/21/2022] [Indexed: 02/06/2023]
Abstract
The hemolytic activity assay is a versatile tool for fast primary toxicity studies. This work presents a systematic study of the hemolytic properties of ArgovitTM silver nanoparticles (AgNPs) extensively studied for biomedical applications. The results revealed an unusual and unexpected bell-shaped hemolysis curve for human healthy and diabetic donor erythrocytes. With the decrease of pH from 7.4 and 6.8 to 5.6, the hemolysis profiles for AgNPs and AgNO3 changed dramatically. For AgNPs, the bell shape changed to a step shape with a subsequent sharp increase, and for AgNO3 it changed to a gradual increase. Explanations of these changes based on the aggregation of AgNPs due to the increase of proton concentration were suggested. Hemolysis of diabetic donor erythrocytes was slightly higher than that of healthy donor erythrocytes. The meta-analysis revealed that for only one AgNPs formulation (out of 48), a bell-shaped hemolysis profile was reported, but not discussed. This scarcity of data was explained by the dominant goal of studies consisting in achieving clinically significant hemolysis of 5-10%. Considering that hemolysis profiles may be bell-shaped, it is recommended to avoid extrapolations and to perform measurements in a wide concentration interval in hemolysis assays.
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Affiliation(s)
- Roberto Luna-Vázquez-Gómez
- Escuela de Ciencias de la Salud, Campus Ensenada, Universidad Autónoma de Baja California (UABC), Mexicali 21100, Mexico; (R.L.-V.-G.); (Y.T.-M.); (J.C.G.-R.); (D.S.S.-V.); (F.C.-F.); (B.R.-R.)
| | | | - Yanis Toledano-Magaña
- Escuela de Ciencias de la Salud, Campus Ensenada, Universidad Autónoma de Baja California (UABC), Mexicali 21100, Mexico; (R.L.-V.-G.); (Y.T.-M.); (J.C.G.-R.); (D.S.S.-V.); (F.C.-F.); (B.R.-R.)
| | - Juan Carlos García-Ramos
- Escuela de Ciencias de la Salud, Campus Ensenada, Universidad Autónoma de Baja California (UABC), Mexicali 21100, Mexico; (R.L.-V.-G.); (Y.T.-M.); (J.C.G.-R.); (D.S.S.-V.); (F.C.-F.); (B.R.-R.)
| | - Patricia Radilla-Chávez
- Escuela de Ciencias de la Salud, Campus Ensenada, Universidad Autónoma de Baja California (UABC), Mexicali 21100, Mexico; (R.L.-V.-G.); (Y.T.-M.); (J.C.G.-R.); (D.S.S.-V.); (F.C.-F.); (B.R.-R.)
| | - David Sergio Salas-Vargas
- Escuela de Ciencias de la Salud, Campus Ensenada, Universidad Autónoma de Baja California (UABC), Mexicali 21100, Mexico; (R.L.-V.-G.); (Y.T.-M.); (J.C.G.-R.); (D.S.S.-V.); (F.C.-F.); (B.R.-R.)
| | - Francisco Casillas-Figueroa
- Escuela de Ciencias de la Salud, Campus Ensenada, Universidad Autónoma de Baja California (UABC), Mexicali 21100, Mexico; (R.L.-V.-G.); (Y.T.-M.); (J.C.G.-R.); (D.S.S.-V.); (F.C.-F.); (B.R.-R.)
| | - Balam Ruiz-Ruiz
- Escuela de Ciencias de la Salud, Campus Ensenada, Universidad Autónoma de Baja California (UABC), Mexicali 21100, Mexico; (R.L.-V.-G.); (Y.T.-M.); (J.C.G.-R.); (D.S.S.-V.); (F.C.-F.); (B.R.-R.)
| | - Alexey Pestryakov
- Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia
| | - Nina Bogdanchikova
- Nanoscience and Nanotechnology Center (CNyN), Campus Ensenada, National Autonomous University of Mexico (UNAM), Mexico City 04510, Mexico;
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48
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Morais I, Medeiros MM, Carvalho M, Morello J, Teixeira SM, Maciel S, Nhantumbo J, Balau A, Rosa MTG, Nogueira F, Rodrigues JA, Carvalho FA, Antunes AMM, Arez AP. Synthetic Red Blood Cell-Specific Glycolytic Intermediate 2,3-Diphosphoglycerate (2,3-DPG) Inhibits Plasmodium falciparum Development In Vitro. Front Cell Infect Microbiol 2022; 12:840968. [PMID: 35372095 PMCID: PMC8967366 DOI: 10.3389/fcimb.2022.840968] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Accepted: 01/21/2022] [Indexed: 11/18/2022] Open
Abstract
Mechanisms of malaria parasite interaction with its host red blood cell may provide potential targets for new antimalarial approaches. Pyruvate kinase deficiency has been associated with resistance to malaria in both experimental models and population studies. Two of the major pyruvate kinase deficient-cell disorders are the decrease in ATP and the increase in 2,3-biphosphoglycerate (2,3-BPG) concentration. High levels of this metabolite, only present in mammalian red blood cell, has an inhibitory effect on glycolysis and we hypothesized that its accumulation may also be harmful to the parasite and be involved in the mechanism of protection provided by that enzymopathy. We examined the effect of a synthetic form, 2,3-DPG, on the Plasmodium falciparum intraerythrocytic developmental cycle in vitro. Results showed an impairment of parasite growth with a direct effect on parasite maturation as significant lower progeny emerged from parasites that were submitted to 2,3-DPG. Further, adding the compound to the culture medium did not result in any effect on the host cell, but instead the metabolic profile of an infected cell became closer to that of a non-infected cell.
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Affiliation(s)
- Inês Morais
- Global Health and Tropical Medicine (GHTM), Instituto de Higiene e Medicina Tropical (IHMT), Universidade NOVA de Lisboa (UNL), Lisbon, Portugal
| | - Márcia M. Medeiros
- Global Health and Tropical Medicine (GHTM), Instituto de Higiene e Medicina Tropical (IHMT), Universidade NOVA de Lisboa (UNL), Lisbon, Portugal
| | - Maria Carvalho
- Global Health and Tropical Medicine (GHTM), Instituto de Higiene e Medicina Tropical (IHMT), Universidade NOVA de Lisboa (UNL), Lisbon, Portugal
| | - Judit Morello
- CEDOC, NOVA Medical School, Universidade NOVA de Lisboa, Lisbon, Portugal
| | - Sara M. Teixeira
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
| | - Suelma Maciel
- Global Health and Tropical Medicine (GHTM), Instituto de Higiene e Medicina Tropical (IHMT), Universidade NOVA de Lisboa (UNL), Lisbon, Portugal
| | - Janice Nhantumbo
- Global Health and Tropical Medicine (GHTM), Instituto de Higiene e Medicina Tropical (IHMT), Universidade NOVA de Lisboa (UNL), Lisbon, Portugal
| | - Ana Balau
- Global Health and Tropical Medicine (GHTM), Instituto de Higiene e Medicina Tropical (IHMT), Universidade NOVA de Lisboa (UNL), Lisbon, Portugal
| | - Margarida T. G. Rosa
- Global Health and Tropical Medicine (GHTM), Instituto de Higiene e Medicina Tropical (IHMT), Universidade NOVA de Lisboa (UNL), Lisbon, Portugal
| | - Fátima Nogueira
- Global Health and Tropical Medicine (GHTM), Instituto de Higiene e Medicina Tropical (IHMT), Universidade NOVA de Lisboa (UNL), Lisbon, Portugal
| | | | - Filomena A. Carvalho
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
| | - Alexandra M. M. Antunes
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
| | - Ana Paula Arez
- Global Health and Tropical Medicine (GHTM), Instituto de Higiene e Medicina Tropical (IHMT), Universidade NOVA de Lisboa (UNL), Lisbon, Portugal
- *Correspondence: Ana Paula Arez,
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49
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Sparsomycin Exhibits Potent Antiplasmodial Activity In Vitro and In Vivo. Pharmaceutics 2022; 14:pharmaceutics14030544. [PMID: 35335918 PMCID: PMC8954220 DOI: 10.3390/pharmaceutics14030544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 02/20/2022] [Accepted: 02/26/2022] [Indexed: 02/04/2023] Open
Abstract
The emerging spread of drug-resistant malaria parasites highlights the need for new antimalarial agents. This study evaluated the growth-inhibitory effects of sparsomycin (Sm), a peptidyl transferase inhibitor, against Plasmodium falciparum 3D7 (chloroquine-sensitive strain), P. falciparum K1 (resistant to multiple drugs, including chloroquine), P. yoelii 17XNL (cause of uncomplicated rodent malaria) and P. berghei ANKA (cause of complicated rodent malaria). Using a fluorescence-based assay, we found that Sm exhibited half-maximal inhibitory concentrations (IC50) of 12.07 and 25.43 nM against P. falciparum 3D7 and K1, respectively. In vitro treatment of P. falciparum 3D7 with Sm at 10 or 50 nM induced morphological alteration, blocked parasites in the ring state and prevented erythrocyte reinvasion, even after removal of the compound. In mice infected with P. yoelii 17XNL, the administration of 100 μg/kg Sm for 7 days did not affect parasitemia. Meanwhile, treatment with 300 μg/kg Sm resulted in a significantly lower parasitemia peak (18.85%) than that observed in the control group (40.13%). In mice infected with P. berghei ANKA, both four and seven doses of Sm (300 μg/kg) prolonged survival by 33.33%. Our results indicate that Sm has potential antiplasmodial activities in vitro and in vivo, warranting its further development as an alternative treatment for malaria.
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50
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Becerra J, Rodriguez M, Leal D, Noris-Suarez K, Gonzalez G. Chitosan-collagen-hydroxyapatite membranes for tissue engineering. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2022; 33:18. [PMID: 35072812 PMCID: PMC8786760 DOI: 10.1007/s10856-022-06643-w] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Accepted: 01/05/2022] [Indexed: 05/17/2023]
Abstract
Tissue engineering is growing in developing new technologies focused on providing effective solutions to degenerative pathologies that affect different types of connective tissues. The search for biocompatible, bioactive, biodegradable, and multifunctional materials has grown significantly in recent years. Chitosan, calcium phosphates collagen, and their combination as composite materials fulfill the required properties and could result in biostimulation for tissue regeneration. In the present work, the chitosan/collagen/hydroxyapatite membranes were prepared with different concentrations of collagen and hydroxyapatite. Cell adhesion was evaluated by MTS assay for two in vitro models. Additionally, cytotoxicity of the different membranes employing hemolysis of erythrocytes isolated from human blood was carried out. The structure of the membranes was analyzed by X-rays diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and thermal stability properties by thermogravimetric methods (TGA). The highest cell adhesion after 48 h was obtained for chitosan membranes with the highest hydroxyapatite and collagen content. All composite membranes showed good cell adhesion and low cytotoxicity, suggesting that these materials have a significant potential to be used as biomaterials for tissue engineering. Graphical abstract.
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Affiliation(s)
- José Becerra
- Instituto de Ciencias Básicas, Universidad Técnica de Manabí, Portoviejo, Ecuador
- Lab. de Materiales, Centro de Ingeniería de Materiales y Nanotecnología, Instituto Venezolano de Investigaciones Científicas, IVIC, Caracas, Venezuela
| | | | - Dayana Leal
- Instituto de Ciencias Básicas, Universidad Técnica de Manabí, Portoviejo, Ecuador
| | | | - Gema Gonzalez
- Lab. de Materiales, Centro de Ingeniería de Materiales y Nanotecnología, Instituto Venezolano de Investigaciones Científicas, IVIC, Caracas, Venezuela.
- Yachay Tech University, School of Physical Sciences and Nanotechnology, Urcuqui, 100119, Ecuador.
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