151
|
Caldera F, Argenziano M, Trotta F, Dianzani C, Gigliotti L, Tannous M, Pastero L, Aquilano D, Nishimoto T, Higashiyama T, Cavalli R. Cyclic nigerosyl-1,6-nigerose-based nanosponges: An innovative pH and time-controlled nanocarrier for improving cancer treatment. Carbohydr Polym 2018; 194:111-121. [PMID: 29801818 DOI: 10.1016/j.carbpol.2018.04.027] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Revised: 04/05/2018] [Accepted: 04/05/2018] [Indexed: 11/26/2022]
Abstract
The design and structural optimisation of a novel polysaccharide-based nanomaterial for the controlled and sustained release of doxorubicin are here reported. A cross-linked polymer was obtained by reacting a tetraglucose, named cyclic nigerosyl-1-6-nigerose (CNN), with pyromellitic dianhydride. The cross-linking reaction formed solid nanoparticles, named nanosponges, able to swell as a function of the pH. Nanoparticle sizes were reduced using High Pressure Homogenization, to obtain uniform nanosuspensions. Doxorubicin was incorporated into the CNN-nanosponges in a good extent. DSC and solid state NMR analyses proved the drug interaction with the polymer matrix. In vitro studies demonstrated pH-dependent slow and prolonged release kinetics of the drug from the nanoformulation. Doxorubicin-loaded CNN-nanosponges were easily internalized in A2780 cell line. They might considered an intracellular doxorubicin reservoir, able to slowly release the drug over time. CNN-nanosponges may be promising biocompatible nanocarriers for the sustained delivery of doxorubicin with potential localised application in cancer treatments.
Collapse
Affiliation(s)
- F Caldera
- Dipartimento di Chimica-Università di Torino, Via P. Giuria 7, 10125 Torino, Italy
| | - M Argenziano
- Dipartimento di Scienza e Tecnologia del Farmaco-Università di Torino, Via P. Giuria 9, 10125 Torino, Italy
| | - F Trotta
- Dipartimento di Chimica-Università di Torino, Via P. Giuria 7, 10125 Torino, Italy
| | - C Dianzani
- Dipartimento di Scienza e Tecnologia del Farmaco-Università di Torino, Via P. Giuria 9, 10125 Torino, Italy
| | - L Gigliotti
- Dipartimento di Scienze della Salute, UPO, Via Solaroli 17, 28100 Novara, Italy
| | - M Tannous
- Dipartimento di Chimica-Università di Torino, Via P. Giuria 7, 10125 Torino, Italy
| | - L Pastero
- Dipartimento di Scienze della Terra, Università di Torino, Via V. Caluso 35, 10125 Torino, Italy
| | - D Aquilano
- Dipartimento di Scienze della Terra, Università di Torino, Via V. Caluso 35, 10125 Torino, Italy
| | - T Nishimoto
- Division Manager New Material Development Division R&D Center Hayashibara Co., Ltd. 675-1 Fujisaki, Naka-ku, Okayama 702-8006, Japan
| | - T Higashiyama
- NAGASE (EUROPA) GmbH/Hayashibara-Immermannstrasse 65c, 40210 Düsseldorf, Germany
| | - R Cavalli
- Dipartimento di Scienza e Tecnologia del Farmaco-Università di Torino, Via P. Giuria 9, 10125 Torino, Italy.
| |
Collapse
|
152
|
Acar H, Ting JM, Srivastava S, LaBelle JL, Tirrell MV. Molecular engineering solutions for therapeutic peptide delivery. Chem Soc Rev 2018; 46:6553-6569. [PMID: 28902203 DOI: 10.1039/c7cs00536a] [Citation(s) in RCA: 89] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Proteins and their interactions in and out of cells must be well-orchestrated for the healthy functioning and regulation of the body. Even the slightest disharmony can cause diseases. Therapeutic peptides are short amino acid sequences (generally considered <50 amino acids) that can naturally mimic the binding interfaces between proteins and thus, influence protein-protein interactions. Because of their fidelity of binding, peptides are a promising next generation of personalized medicines to reinstate biological harmony. Peptides as a group are highly selective, relatively safe, and biocompatible. However, they are also vulnerable to many in vivo pharmacologic barriers limiting their clinical translation. Current advances in molecular, chemical, and nanoparticle engineering are helping to overcome these previously insurmountable obstacles and improve the future of peptides as active and highly selective therapeutics. In this review, we focus on self-assembled vehicles as nanoparticles to carry and protect therapeutic peptides through this journey, and deliver them to the desired tissue.
Collapse
Affiliation(s)
- Handan Acar
- Institute for Molecular Engineering, The University of Chicago, Chicago, IL 60637, USA.
| | | | | | | | | |
Collapse
|
153
|
Manatunga DC, de Silva RM, de Silva KMN, Malavige GN, Wijeratne DT, Williams GR, Jayasinghe CD, Udagama PV. Effective delivery of hydrophobic drugs to breast and liver cancer cells using a hybrid inorganic nanocarrier: A detailed investigation using cytotoxicity assays, fluorescence imaging and flow cytometry. Eur J Pharm Biopharm 2018; 128:18-26. [PMID: 29625162 DOI: 10.1016/j.ejpb.2018.04.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 03/30/2018] [Accepted: 04/02/2018] [Indexed: 02/07/2023]
Abstract
This study was focused on developing a drug carrier system composed of a polymer containing hydroxyapatite (HAp) shell and a magnetic core of iron oxide nanoparticles. Doxorubicin and/or curcumin were loaded into the carrier via a simple diffusion deposition approach, with encapsulation efficiencies (EE) for curcumin and doxorubicin of 93.03 ± 0.3% and 97.37 ± 0.12% respectively. The co-loading of curcumin and doxorubicin led to a total EE of 76.02 ± 0.48%. Release studies were carried out at pH 7.4 and 5.3, and revealed a greater extent of release at pH 5.3, showing the formulations to have potential applications in tumor microenvironments. Cytotoxicity assays, fluorescence imaging and flow cytometry demonstrated that the formulations could effectively inhibit the growth of MCF-7 (breast) and HEpG2 (liver) cancer cells, being more potent than the free drug molecules both in terms of dose and duration of action. Additionally, hemolysis tests and cytotoxicity evaluations determined the drug-loaded carriers to be non-toxic towards non-cancerous cells. These formulations thus have great potential in the development of new cancer therapeutics.
Collapse
Affiliation(s)
| | - Rohini M de Silva
- Department of Chemistry, University of Colombo, Colombo 00300, Sri Lanka.
| | - K M Nalin de Silva
- Department of Chemistry, University of Colombo, Colombo 00300, Sri Lanka; Sri Lanka Institute of Nanotechnology (SLINTEC), Nanotechnology & Science Park, Mahenwatte, Pitipana, Homagama 10206, Sri Lanka
| | - Gathsaurie Neelika Malavige
- Center for Dengue Research, Department of Microbiology, Faculty of Medical Sciences, University of Sri Jayewardenepura, 10250, Sri Lanka
| | - Dulharie T Wijeratne
- Center for Dengue Research, Department of Microbiology, Faculty of Medical Sciences, University of Sri Jayewardenepura, 10250, Sri Lanka
| | - Gareth R Williams
- UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, United Kingdom
| | | | - Preethi V Udagama
- Department of Zoology, University of Colombo, Colombo 00300, Sri Lanka
| |
Collapse
|
154
|
Yin Y, Wang Y, Zhang J, Li J, Chen J, Shen Q. Effect of PI3K/Akt signal pathway inhibitor on docetaxel nanoparticles in cell uptake, cell colony, caspase-3 & caspase-9 expression and pharmacokinetics. J Drug Deliv Sci Technol 2018. [DOI: 10.1016/j.jddst.2018.01.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
155
|
Vakilinezhad MA, Alipour S, Montaseri H. Fabrication and in vitro evaluation of magnetic PLGA nanoparticles as a potential Methotrexate delivery system for breast cancer. J Drug Deliv Sci Technol 2018. [DOI: 10.1016/j.jddst.2018.01.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
156
|
Belletti D, Grabrucker AM, Pederzoli F, Menrath I, Vandelli MA, Tosi G, Duskey TJ, Forni F, Ruozi B. Hybrid nanoparticles as a new technological approach to enhance the delivery of cholesterol into the brain. Int J Pharm 2018; 543:300-310. [PMID: 29608954 DOI: 10.1016/j.ijpharm.2018.03.061] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Revised: 03/28/2018] [Accepted: 03/29/2018] [Indexed: 12/25/2022]
Abstract
Restoration of the Chol homeostasis in the Central Nervous System (CNS) could be beneficial for the treatment of Huntington's Disease (HD), a progressive, fatal, adult-onset, neurodegenerative disorder. Unfortunately, Chol is unable to cross the blood-brain barrier (BBB), thus a novel strategy for a targeted delivery of Chol into the brain is highly desired. This article aims to investigate the production of hybrid nanoparticles composed by Chol and PLGA (MIX-NPs) modified with g7 ligand for BBB crossing. We described the impact of ratio between components (Chol and PLGA) and formulation process (nanoprecipitation or single emulsion process) on physico-chemical and structural characteristics, we tested MIX-NPs in vitro using primary hippocampal cell cultures evaluating possible toxicity, uptake, and the ability to influence excitatory synaptic receptors. Our results elucidated that both formulation processes produce MIX-NPs with a Chol content higher that 40%, meaning that Chol is a structural particle component and active compound at the same time. The formulation strategy impacted the architecture and reorganization of components leading to some differences in Chol availability between the two types of g7 MIX-NPs. Our results identified that both kinds of MIX-NPs are efficiently taken up by neurons, able to escape lysosomes and release Chol into the cells resulting in an efficient modification in expression of synaptic receptors that could be beneficial in HD.
Collapse
Affiliation(s)
- Daniela Belletti
- Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Andreas Martin Grabrucker
- Department of Biological Sciences, University of Limerick, Limerick, Ireland; Bernal Institute, University of Limerick, Limerick, Ireland; Health Research Institute (HRI), University of Limerick, Limerick, Ireland
| | - Francesca Pederzoli
- Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Isabel Menrath
- Institute for Anatomy and Cell Biology, Ulm University, Ulm, Germany
| | | | - Giovanni Tosi
- Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Thomas Jason Duskey
- Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Flavio Forni
- Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Barbara Ruozi
- Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy.
| |
Collapse
|
157
|
Cornu R, Rougier N, Pellequer Y, Lamprecht A, Hamon P, Li R, Beduneau A, Martin H. Interspecies differences in the cytochrome P450 activity of hepatocytes exposed to PLGA and silica nanoparticles: an in vitro and in vivo investigation. NANOSCALE 2018; 10:5171-5181. [PMID: 29492498 DOI: 10.1039/c8nr00226f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Nanomedicines represent a promising approach in the treatment and diagnosis of numerous disorders. The majority of the injected dose of nanoparticles (NPs) is sequestrated in the liver. Despite this hepatic tropism, the interaction of NPs with the detoxification function of the liver remains unclear. The present study consists of evaluating the impact of biodegradable poly(lactide-co-glycolide) (PLGA) and silica NPs on cytochrome P450 (CYP) activities. The effects of NPs were evaluated in vitro on human and rat hepatocytes in primary cultures and in vivo by intravenous injections in healthy rats. More than the physicochemical properties, the composition of NPs (organic, inorganic) dramatically influenced the detoxification function of the liver. Silica NPs modulated the CYP activity both in rat and human hepatocytes, in contrast to PLGA NPs. A CYP isoform-dependent effect was reported and the modulation of the metabolic hepatic activity was species-dependent. Human hepatocytes were sensitive to an exposure to PLGA NPs, whereas no marked effect was detected in rat hepatocytes. The in vitro data obtained in rat hepatocytes were correlated with the in vivo data. This study emphasizes the interest to set up relevant in vitro models using human hepatic cells to evaluate the hepatotoxicity of nanomedicines.
Collapse
Affiliation(s)
- Raphaël Cornu
- PEPITE EA4267, Univ. Bourgogne Franche-Comté, F-25000 Besançon, France.
| | | | | | | | | | | | | | | |
Collapse
|
158
|
Ballout F, Habli Z, Rahal ON, Fatfat M, Gali-Muhtasib H. Thymoquinone-based nanotechnology for cancer therapy: promises and challenges. Drug Discov Today 2018; 23:1089-1098. [PMID: 29374534 DOI: 10.1016/j.drudis.2018.01.043] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Revised: 12/22/2017] [Accepted: 01/17/2018] [Indexed: 12/17/2022]
Abstract
Thymoquinone (TQ), the active ingredient of black seed, is a promising anticancer molecule that inhibits cancer cell growth and progression in vitro and in vivo. Despite the promising anticancer activities of TQ, its translation to the clinic is limited by its poor bioavailability and hydrophobicity. As such, we and others encapsulated TQ in nanoparticles to improve its delivery and limit undesirable cytotoxicity. These TQ-nanoparticle formulations showed improved anticancer and anti-inflammatory activities when compared with free TQ. Here, we provide an overview of the various TQ-nanoparticle formulations, highlight their superior efficacy and discuss up-to-date solutions to further enhance TQ bioavailability and anticancer activity, thus improving potential for clinical translation.
Collapse
Affiliation(s)
- Farah Ballout
- Department of Biology and Department of Anatomy, Cell Biology and Physiological Sciences, American University of Beirut, Beirut 1103, Lebanon
| | - Zeina Habli
- Department of Biology and Department of Anatomy, Cell Biology and Physiological Sciences, American University of Beirut, Beirut 1103, Lebanon
| | - Omar Nasser Rahal
- School of Medicine, Saba University School of Medicine, Saba, Dutch Caribbean 5016121, The Netherlands
| | - Maamoun Fatfat
- Department of Biology and Department of Anatomy, Cell Biology and Physiological Sciences, American University of Beirut, Beirut 1103, Lebanon
| | - Hala Gali-Muhtasib
- Department of Biology and Department of Anatomy, Cell Biology and Physiological Sciences, American University of Beirut, Beirut 1103, Lebanon; Department of Biology, Faculty of Arts and Sciences and Center for Drug Discovery, Faculty of Medicine, American University of Beirut, Lebanon.
| |
Collapse
|
159
|
Jahan ST, Sadat SM, Haddadi A. Design and immunological evaluation of anti-CD205-tailored PLGA-based nanoparticulate cancer vaccine. Int J Nanomedicine 2018; 13:367-386. [PMID: 29391795 PMCID: PMC5768188 DOI: 10.2147/ijn.s144266] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
The aim of this research was to develop a targeted antigen–adjuvant assembled delivery system that will enable dendritic cells (DCs) to efficiently mature to recognize antigens released from tumor cells. It is important to target the DCs with greater efficiency to prime T cell immune responses. In brief, model antigen, ovalbumin (OV), and monophosphoryl lipid A adjuvant were encapsulated within the nanoparticle (NP) by double emulsification solvent evaporation method. Targeted NPs were obtained through ligand incorporation via physical adsorption or chemical conjugation process. Intracellular uptake of the NPs and the maturation of DCs were evaluated with flow cytometry. Remarkably, the developed delivery system had suitable physicochemical properties, such as particle size, surface charge, OV encapsulation efficiency, biphasic OV release pattern, and safety profile. The ligand modified formulations had higher targeting efficiency than the non-tailored NPs. This was also evident when the targeted formulations expressed comparatively higher fold increase in surface activation markers such as CD40, CD86, and major histocompatibility complex class II molecules. The maturation of DCs was further confirmed through secretion of extracellular cytokines compared to control cells in the DC microenvironment. Physicochemical characterization of NPs was performed based on the polymer end groups, their viscosities, and ligand-NP bonding type. In conclusion, the DC stimulatory response was integrated to develop a relationship between the NP structure and desired immune response. Therefore, the present study narrates a comparative evaluation of some selected parameters to choose a suitable formulation useful for in vivo cancer immunotherapy.
Collapse
Affiliation(s)
- Sheikh Tasnim Jahan
- Division of Pharmacy, College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, SK, Canada
| | - Sams Ma Sadat
- Division of Pharmacy, College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, SK, Canada
| | - Azita Haddadi
- Division of Pharmacy, College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, SK, Canada
| |
Collapse
|
160
|
Ebeid K, Meng X, Thiel KW, Do AV, Geary SM, Morris AS, Pham EL, Wongrakpanich A, Chhonker YS, Murry DJ, Leslie KK, Salem AK. Synthetically lethal nanoparticles for treatment of endometrial cancer. NATURE NANOTECHNOLOGY 2018; 13:72-81. [PMID: 29203914 PMCID: PMC5762267 DOI: 10.1038/s41565-017-0009-7] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Accepted: 09/19/2017] [Indexed: 05/29/2023]
Abstract
Uterine serous carcinoma, one of the most aggressive types of endometrial cancer, is characterized by poor outcomes and mutations in the tumour suppressor p53. Our objective was to engender synthetic lethality to paclitaxel (PTX), the frontline treatment for endometrial cancer, in tumours with mutant p53 and enhance the therapeutic efficacy using polymeric nanoparticles (NPs). First, we identified the optimal NP formulation through comprehensive analyses of release profiles and cellular-uptake and cell viability studies. Not only were PTX-loaded NPs superior to PTX in solution, but the combination of PTX-loaded NPs with the antiangiogenic molecular inhibitor BIBF 1120 (BIBF) promoted synthetic lethality specifically in cells with the loss-of-function (LOF) p53 mutation. In a xenograft model of endometrial cancer, this combinatorial therapy resulted in a marked inhibition of tumour progression and extended survival. Together, our data provide compelling evidence for future studies of BIBF- and PTX-loaded NPs as a therapeutic opportunity for LOF p53 cancers.
Collapse
Affiliation(s)
- Kareem Ebeid
- Division of Pharmaceutics and Translational Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA, USA
| | - Xiangbing Meng
- Department of Obstetrics and Gynecology, University of Iowa, Iowa City, IA, USA
- Holden Comprehensive Cancer Center, University of Iowa, Iowa City, IA, USA
| | - Kristina W Thiel
- Department of Obstetrics and Gynecology, University of Iowa, Iowa City, IA, USA
| | - Anh-Vu Do
- Division of Pharmaceutics and Translational Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA, USA
| | - Sean M Geary
- Division of Pharmaceutics and Translational Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA, USA
| | - Angie S Morris
- Division of Pharmaceutics and Translational Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA, USA
| | - Erica L Pham
- Division of Pharmaceutics and Translational Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA, USA
| | - Amaraporn Wongrakpanich
- Division of Pharmaceutics and Translational Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA, USA
- Department of Pharmacy, Faculty of Pharmacy, Mahidol University, Bangkok, Thailand
| | - Yashpal S Chhonker
- Department of Pharmacy Practice, College of Pharmacy, University of Nebraska Medical Center, Omaha, NE, USA
| | - Daryl J Murry
- Division of Pharmaceutics and Translational Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA, USA
- Department of Pharmacy Practice, College of Pharmacy, University of Nebraska Medical Center, Omaha, NE, USA
| | - Kimberly K Leslie
- Department of Obstetrics and Gynecology, University of Iowa, Iowa City, IA, USA.
- Holden Comprehensive Cancer Center, University of Iowa, Iowa City, IA, USA.
| | - Aliasger K Salem
- Division of Pharmaceutics and Translational Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA, USA.
- Holden Comprehensive Cancer Center, University of Iowa, Iowa City, IA, USA.
| |
Collapse
|
161
|
Martins C, Sousa F, Araújo F, Sarmento B. Functionalizing PLGA and PLGA Derivatives for Drug Delivery and Tissue Regeneration Applications. Adv Healthc Mater 2018; 7. [PMID: 29171928 DOI: 10.1002/adhm.201701035] [Citation(s) in RCA: 149] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Revised: 09/27/2017] [Indexed: 12/16/2022]
Abstract
Poly(lactic-co-glycolic) acid (PLGA) is one of the most versatile biomedical polymers, already approved by regulatory authorities to be used in human research and clinics. Due to its valuable characteristics, PLGA can be tailored to acquire desirable features for control bioactive payload or scaffold matrix. Moreover, its chemical modification with other polymers or bioconjugation with molecules may render PLGA with functional properties that make it the Holy Grail among the synthetic polymers to be applied in the biomedical field. In this review, the physical-chemical properties of PLGA, its synthesis, degradation, and conjugation with other polymers or molecules are revised in detail, as well as its applications in drug delivery and regeneration fields. A particular focus is given to successful examples of products already on the market or at the late stages of trials, reinforcing the potential of this polymer in the biomedical field.
Collapse
Affiliation(s)
- Cláudia Martins
- I3S - Instituto de Investigação e Inovação em Saúde; Universidade do Porto; Rua Alfredo Allen 208 4200-393 Porto Portugal
- INEB - Instituto de Engenharia Biomédica; Universidade do Porto; Rua Alfredo Allen 208 4200-393 Porto Portugal
| | - Flávia Sousa
- I3S - Instituto de Investigação e Inovação em Saúde; Universidade do Porto; Rua Alfredo Allen 208 4200-393 Porto Portugal
- INEB - Instituto de Engenharia Biomédica; Universidade do Porto; Rua Alfredo Allen 208 4200-393 Porto Portugal
- ICBAS - Instituto Ciências Biomédicas Abel Salazar; Universidade do Porto; Rua de Jorge Viterbo Ferreira 228 4050-313 Porto Portugal
| | - Francisca Araújo
- I3S - Instituto de Investigação e Inovação em Saúde; Universidade do Porto; Rua Alfredo Allen 208 4200-393 Porto Portugal
- INEB - Instituto de Engenharia Biomédica; Universidade do Porto; Rua Alfredo Allen 208 4200-393 Porto Portugal
| | - Bruno Sarmento
- I3S - Instituto de Investigação e Inovação em Saúde; Universidade do Porto; Rua Alfredo Allen 208 4200-393 Porto Portugal
- INEB - Instituto de Engenharia Biomédica; Universidade do Porto; Rua Alfredo Allen 208 4200-393 Porto Portugal
- CESPU - Instituto de Investigação e Formação Avançada em Ciências e Tecnologias da Saúde; Rua Central de Gandra 1317 4585-116 Gandra Portugal
| |
Collapse
|
162
|
Botvin V, Pozdniakov M, Filimoshkin A. Intermolecular “zipper” type depolymerization of oligomeric molecules of lactic and glycolic acids prepacked as paired associates. Polym Degrad Stab 2017. [DOI: 10.1016/j.polymdegradstab.2017.10.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
163
|
Barouti G, Jaffredo CG, Guillaume SM. Advances in drug delivery systems based on synthetic poly(hydroxybutyrate) (co)polymers. Prog Polym Sci 2017. [DOI: 10.1016/j.progpolymsci.2017.05.002] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
|
164
|
Fan YL, Hou HW, Tay HM, Guo WM, Berggren PO, Loo SCJ. Preservation of Anticancer and Immunosuppressive Properties of Rapamycin Achieved Through Controlled Releasing Particles. AAPS PharmSciTech 2017; 18:2648-2657. [PMID: 28251512 DOI: 10.1208/s12249-017-0745-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Accepted: 02/14/2017] [Indexed: 12/24/2022] Open
Abstract
Rapamycin is commonly used in chemotherapy and posttransplantation rejection suppression, where sustained release is preferred. Conventionally, rapamycin has to be administered in excess due to its poor solubility, and this often leads to cytotoxicity and undesirable side effects. In addition, rapamycin has been shown to be hydrolytically unstable, losing its bioactivity within a few hours. The use of drug delivery systems is hypothesized to preserve the bioactivity of rapamycin, while providing controlled release of this otherwise potent drug. This paper reports on the use of microparticles (MP) as a means to tune and sustain the delivery of bioactive rapamycin for up to 30 days. Rapamycin was encapsulated (100% efficiency) in poly(lactic-co-glycolic acid) (PLGA), polycaprolactone (PCL), or a mixture of both via an emulsion method. The use of different polymer types and mixture was shown to achieve a variety of release kinetics and profile. Released rapamycin was subsequently evaluated against breast cancer cell (MCF-7) and human lymphocyte cell (Jurkat). Inhibition of cell proliferation was in good agreement with in vitro release profiles, which confirmed the intact bioactivity of rapamycin. For Jurkat cells, the suppression of cell growth was proven to be effective up to 20 days, a duration significantly longer than free rapamycin. Taken together, these results demonstrate the ability to tune, sustain, and preserve the bioactivity of rapamycin using MP formulations. The sustained delivery of rapamycin could lead to better therapeutic effects than bolus dosage, at the same time improving patient compliance due to its long-acting duration.
Collapse
|
165
|
Andrade-Carrera B, Clares B, Noé V, Mallandrich M, Calpena AC, García ML, Garduño-Ramírez ML. Cytotoxic Evaluation of (2S)-5,7-Dihydroxy-6-prenylflavanone Derivatives Loaded PLGA Nanoparticles against MiaPaCa-2 Cells. Molecules 2017; 22:E1553. [PMID: 28914822 PMCID: PMC6151514 DOI: 10.3390/molecules22091553] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Revised: 09/13/2017] [Accepted: 09/14/2017] [Indexed: 01/18/2023] Open
Abstract
The search for new alternatives for the prevention and treatment of cancer is extremely important to minimize human mortality. Natural products are an alternative to chemical drugs, since they are a source of many potential compounds with anticancer properties. In the present study, the (2S)-5,7-dihydroxy-6-prenylflavanone (semi-systematic name), also called (2S)-5,7-dihydroxy-6-(3-methyl-2-buten-1-yl)-2-phenyl-2,3-dihydro-4H-1-Benzopyran-4-one (CAS Name registered) (1) was isolated from Eysenhardtia platycarpa leaves. This flavanone 1 was considered as the lead compound to generate new cytotoxic derivatives 1a, 1b, 1c and 1d. These compounds 1, 1a, 1b, 1c, and 1d were then loaded in nanosized drug delivery systems such as polymeric nanoparticles (NPs). Small homogeneous spherical shaped NPs were obtained. Cytotoxic activity of free compounds 1, 1a, 1b, 1c, and 1d and encapsulated in polymeric NPs (NPs1, NPs1a, NPs1b, NPs1c and NPs1d) were evaluated against the pancreatic cancer cell line MiaPaCa-2. The obtained results demonstrated that NPs1a and NPs1b exhibited optimal cytotoxicity, and an even higher improvement of the cytotoxic efficacy was exhibited with the encapsulation of 1a. Based on these results, NPs1a were proposed as promising anticancer agent candidates.
Collapse
Affiliation(s)
- Berenice Andrade-Carrera
- Centro de Investigaciones Químicas, Instituto de Investigación en Ciencias Básicas y Aplicadas, Universidad Autónoma del Estado de Morelos, Avenida Universidad 1001, Col. Chamilpa, Cuernavaca, Morelos 62209, Mexico.
| | - Beatriz Clares
- Department of Pharmacy and Pharmaceutical Technology, School of Pharmacy, Campus of Cartuja s/n, University of Granada, 18071 Granada, Spain.
- Nanoscience and Nanotechnology Institute (IN2UB), University of Barcelona, 27-31 Joan XXIII Avenue, 08028 Barcelona, Spain.
| | - Véronique Noé
- Department of Biochemistry and Physiology, Faculty of Pharmacy and Food Science, University of Barcelona, 27-31 Joan XXIII Avenue, 08028 Barcelona, Spain.
| | - Mireia Mallandrich
- Nanoscience and Nanotechnology Institute (IN2UB), University of Barcelona, 27-31 Joan XXIII Avenue, 08028 Barcelona, Spain.
- Department of Pharmacy, Pharmaceutical Technology and Physical Chemistry, School of Pharmacy and Food Sciences, University of Barcelona, 27-31 Joan XXIII Avenue, 08028 Barcelona, Spain.
| | - Ana C Calpena
- Nanoscience and Nanotechnology Institute (IN2UB), University of Barcelona, 27-31 Joan XXIII Avenue, 08028 Barcelona, Spain.
- Department of Pharmacy, Pharmaceutical Technology and Physical Chemistry, School of Pharmacy and Food Sciences, University of Barcelona, 27-31 Joan XXIII Avenue, 08028 Barcelona, Spain.
| | - María Luisa García
- Nanoscience and Nanotechnology Institute (IN2UB), University of Barcelona, 27-31 Joan XXIII Avenue, 08028 Barcelona, Spain.
- Department of Pharmacy, Pharmaceutical Technology and Physical Chemistry, School of Pharmacy and Food Sciences, University of Barcelona, 27-31 Joan XXIII Avenue, 08028 Barcelona, Spain.
| | - María Luisa Garduño-Ramírez
- Centro de Investigaciones Químicas, Instituto de Investigación en Ciencias Básicas y Aplicadas, Universidad Autónoma del Estado de Morelos, Avenida Universidad 1001, Col. Chamilpa, Cuernavaca, Morelos 62209, Mexico.
| |
Collapse
|
166
|
Pretel E, Arias JL, Cabeza L, Melguizo C, Prados J, Mallandrich M, Suñer J, Clares B. Development of biomedical 5-fluorouracil nanoplatforms for colon cancer chemotherapy: Influence of process and formulation parameters. Int J Pharm 2017; 530:155-164. [DOI: 10.1016/j.ijpharm.2017.07.055] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Revised: 07/04/2017] [Accepted: 07/18/2017] [Indexed: 12/13/2022]
|
167
|
Salatin S, Barar J, Barzegar-Jalali M, Adibkia K, Jelvehgari M. Thermosensitive in situ nanocomposite of rivastigmine hydrogen tartrate as an intranasal delivery system: Development, characterization, ex vivo permeation and cellular studies. Colloids Surf B Biointerfaces 2017; 159:629-638. [PMID: 28865359 DOI: 10.1016/j.colsurfb.2017.08.031] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Revised: 08/07/2017] [Accepted: 08/17/2017] [Indexed: 12/22/2022]
Abstract
Intranasal administration of pharmaceutical compounds is gaining considerable attention as an alternative route for localized/systemic drug delivery. However, insufficient therapeutic efficacy of drugs via this route seems to be a major challenge for development of de novo intranasal formulations. This shortcoming can be overcome by simultaneous utilization of a nanoparticulate delivery system with a polymeric gel network. Therefore, the main aim of the present study was to develop erodible in-situ gel forming systems of poloxamer 407® (P407) as a promising platform, capable of prolonging rivastigmine hydrogen tartrate (RHT) release from the embedded poly(lactic-co-glycolic acid) (PLGA) nanoparticles (NPs). PLGA NPs containing RHT were formulated and characterized, then were embedded in P407 gel forming matrix and analyzed in terms of viscosity, stability, gelation temperature, loading efficiency and mucoahesive behavior. The cytotoxicity of NPs was evaluated on A549 cell line using MTT assay. Cellular uptake of the NPs was also measured by means of fluorescence microcopy and flow cytometry analyses. The formulations were finally evaluated for their permeability across sheep nasal mucosa. A linear dependence of sol-gel temperature (Tsol-gel) on the P407 concentration was observed, and a P407 content of 18% was selected. The loading efficiencies of formulations were found to be around 100.22-104.31%. The RHT-loaded NPs showed a suitable cytocompatibility on A549 cells with a time-dependent increase in cellular uptake. Besides, nanocomposites showed higher amounts of drug permeation through nasal sheep mucosa than plain drug gel. Taken all, it is concluded that the formulated nanocomposites may be considered as useful drug delivery systems for the nasal delivery of RHT with enhanced therapeutic efficacy.
Collapse
Affiliation(s)
- S Salatin
- Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Sciences, Tabriz, Iran; Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - J Barar
- Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - M Barzegar-Jalali
- Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Kh Adibkia
- Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran; Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - M Jelvehgari
- Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran; Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
| |
Collapse
|
168
|
Roque LV, Dias IS, Cruz N, Rebelo A, Roberto A, Rijo P, Reis CP. Design of Finasteride-Loaded Nanoparticles for Potential Treatment of Alopecia. Skin Pharmacol Physiol 2017; 30:197-204. [DOI: 10.1159/000475473] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Accepted: 04/03/2017] [Indexed: 11/19/2022]
|
169
|
Prakapenka AV, Bimonte-Nelson HA, Sirianni RW. Engineering poly(lactic-co-glycolic acid) (PLGA) micro- and nano-carriers for Controlled Delivery of 17β-Estradiol. Ann Biomed Eng 2017; 45:1697-1709. [PMID: 28634732 PMCID: PMC5599155 DOI: 10.1007/s10439-017-1859-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Accepted: 05/23/2017] [Indexed: 12/29/2022]
Abstract
With menopause, circulating levels of 17β-estradiol (E2) markedly decrease. E2-based hormone therapy is prescribed to alleviate symptoms associated with menopause. E2 is also recognized for its beneficial effects in the central nervous system (CNS), such as enhanced cognitive function following abrupt hormonal loss associated with ovariectomy. For women with an intact uterus, an opposing progestogen component is required to decrease the risk of developing endometrial hyperplasia. While adding an opposing progestogen attenuates these detrimental effects on the uterus, it can attenuate the beneficial effects of E2 in the CNS. Poly(lactic-co-glycolic acid) (PLGA) micro- and nano- carriers (MNCs) have been heavily investigated for their ability to enhance the therapeutic activity of hydrophobic agents following exogenous administration, including E2. Multiple PLGA MNC formulation parameters, such as composition, molecular weight, and type of solvent used, can be altered to systematically manipulate the pharmacokinetic and pharmacodynamic profiles of encapsulated agents. Thus, there is an opportunity to enhance the therapeutic activity of E2 in the CNS through controlled delivery from PLGA MNCs. The aim of this review is to consider the fate of exogenously administered E2 and discuss how PLGA MNCs and route of administration can be used as strategies for controlled E2 delivery.
Collapse
Affiliation(s)
- Alesia V Prakapenka
- Barrow Brain Tumor Research Center, Barrow Neurological Institute, 350 W Thomas Rd., Phoenix, AZ, 85013, USA
- Department of Psychology, Arizona State University, 950 S. McAllister Ave., Tempe, AZ, 85287, USA
- Arizona Alzheimer's Consortium, 4745 N 7th St, Phoenix, AZ, 85014, USA
| | - Heather A Bimonte-Nelson
- Department of Psychology, Arizona State University, 950 S. McAllister Ave., Tempe, AZ, 85287, USA
- Arizona Alzheimer's Consortium, 4745 N 7th St, Phoenix, AZ, 85014, USA
| | - Rachael W Sirianni
- Barrow Brain Tumor Research Center, Barrow Neurological Institute, 350 W Thomas Rd., Phoenix, AZ, 85013, USA.
| |
Collapse
|
170
|
Triblock copolyesters derived from lactic acid and glucose: Synthesis, nanoparticle formation and simulation. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.04.033] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
171
|
Abstract
Monoclonal antibodies have deserved a remarkable interest for more than 40 years as a vital tool for the treatment of various diseases. Still, there is a raising interest to develop advanced monoclonal antibody delivery systems able to tailor pharmacokinetics. Bevacizumab is a humanized immunoglobulin IgG1 used in antiangiogenic therapies due to its capacity to inhibit the interaction between vascular endothelial growth factor and its receptor. However, bevacizumab-based antiangiogenic therapy is not always effective due to poor treatment compliance associated to multiples administrations and drug resistance. In this work, we show a promising strategy of encapsulating bevacizumab to protect and deliver it, in a controlled manner, increasing the time between administrations and formulation shelf-life. Nanoencapsulation of bevacizumab represents a significant advance for selective antiangiogenic therapies since extracellular, cell surface and intracellular targets can be reached. The present study shows that bevacizumab-loaded poly (lactic-co-glycolic acid) (PLGA) nanoparticles does not impair its native-like structure after encapsulation and fully retain the bioactivity, making this nanosystem a new paradigm for the improvement of angiogenic therapy.
Collapse
|
172
|
Luo Z, Zhao G, Panhwar F, Akbar MF, Shu Z. Well-designed microcapsules fabricated using droplet-based microfluidic technique for controlled drug release. J Drug Deliv Sci Technol 2017. [DOI: 10.1016/j.jddst.2017.04.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
|
173
|
Sana S, Ghosh S, Das N, Sarkar S, Mandal AK. Vesicular melatonin efficiently downregulates sodium fluoride-induced rat hepato- and broncho-TNF-α, TGF-β expressions, and associated oxidative injury: a comparative study of liposomal and nanoencapsulated forms. Int J Nanomedicine 2017; 12:4059-4071. [PMID: 28603418 PMCID: PMC5457176 DOI: 10.2147/ijn.s124119] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
The importance of fluoride as a natural and industrial toxicant is recognized worldwide. We evaluated the regulating role and biological effect of vesicular (liposomal and nanoencapsulated) melatonin (N-acetyl-5-methoxytryptamine) for drug delivery and controlled release on the depletion of inflammatory mediators, as well as oxidative damage in sodium fluoride (NaF)-treated lungs and liver. Hepatic and bronchial damage was induced in Swiss albino rats with a single acute ingestion of NaF (48 mg/kg body weight, oral gavage). NaF exposure caused the generation of reactive oxygen species (ROS); upregulation of TNF-α and TGF-β; decreased activities of antioxidant systems (glutathione, glutathione-S-transferase, superoxide dismutase, catalase), succinate dehydrogenase, membrane microviscosity, and membrane potential; increased activity of lipid peroxidation and nicotinamide adenine dinucleotide hydride oxidase; and increased hepatic and nephrite toxicities (P<0.001) compared to those in normal animals. Charge (-ve/+ve)-specific single liposomal (dicetyl phosphate/stearylamine) and nanoencapsulated melatonin (4.46 mg/kg body weight, intravenous) treatments (2 hours after NaF exposure) significantly (P<0.01/0.001) and maximally (P<0.001) inhibited all alterations developed in NaF-mediated oxidative injuries in rat liver (+ve) and lungs (-ve), demonstrating their strong free radical scavenging, antioxidant and antigenotoxic properties, and vesicular efficiencies of targeting. Overall, these results suggest that nanoencapsulated melatonin might be considered as a more powerful remedial therapy in comparison to liposomes, in terms of its efficacy in regulating NaF-intoxicated oxidative injury.
Collapse
Affiliation(s)
- Suvomoy Sana
- Drug Development, Diagnostics and Biotechnology, CSIR-Indian Institute of Chemical Biology, West Bengal, India
| | - Swarupa Ghosh
- Drug Development, Diagnostics and Biotechnology, CSIR-Indian Institute of Chemical Biology, West Bengal, India
| | - Nirmalendu Das
- Drug Development, Diagnostics and Biotechnology, CSIR-Indian Institute of Chemical Biology, West Bengal, India
| | - Sibani Sarkar
- Drug Development, Diagnostics and Biotechnology, CSIR-Indian Institute of Chemical Biology, West Bengal, India
| | - Ardhendu Kumar Mandal
- Drug Development, Diagnostics and Biotechnology, CSIR-Indian Institute of Chemical Biology, West Bengal, India
| |
Collapse
|
174
|
Reardon PJT, Parhizkar M, Harker AH, Browning RJ, Vassileva V, Stride E, Pedley RB, Edirisinghe M, Knowles JC. Electrohydrodynamic fabrication of core-shell PLGA nanoparticles with controlled release of cisplatin for enhanced cancer treatment. Int J Nanomedicine 2017; 12:3913-3926. [PMID: 28579777 PMCID: PMC5449170 DOI: 10.2147/ijn.s134833] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Increasing the clinical efficacy of toxic chemotherapy drugs such as cisplatin (CDDP), via targeted drug delivery, is a key area of research in cancer treatment. In this study, CDDP-loaded poly(lactic-co-glycolic acid) (PLGA) polymeric nanoparticles (NPs) were successfully prepared using electrohydrodynamic atomization (EHDA). The configuration was varied to control the distribution of CDDP within the particles, and high encapsulation efficiency (>70%) of the drug was achieved. NPs were produced with either a core-shell (CS) or a matrix (uniform) structure. It was shown that CS NPs had the most sustained release of the 2 formulations, demonstrating a slower linear release post initial "burst" and longer duration. The role of particle architecture on the rate of drug release in vitro was confirmed by fitting the experimental data with various kinetic models. This indicated that the release process was a simple diffusion mechanism. The CS NPs were effectively internalized into the endolysosomal compartments of cancer cells and demonstrated an increased cytotoxic efficacy (concentration of a drug that gives half maximal response [EC50] reaching 6.2 µM) compared to free drug (EC50 =9 µM) and uniform CDDP-distributed NPs (EC50 =7.6 µM) in vitro. Thus, these experiments indicate that engineering the structure of PLGA NPs can be exploited to control both the dosage and the release characteristics for improved clinical chemotherapy treatment.
Collapse
Affiliation(s)
- Philip JT Reardon
- Division of Biomaterials and Tissue Engineering, UCL Eastman Dental Institute
| | | | - Anthony H Harker
- Department of Physics & Astronomy, University College London, London
| | - Richard J Browning
- Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, Oxford
| | - Vessela Vassileva
- Department of Oncology, UCL Cancer Institute, University College London, London, UK
| | - Eleanor Stride
- Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, Oxford
| | - R Barbara Pedley
- Department of Oncology, UCL Cancer Institute, University College London, London, UK
| | | | - Jonathan C Knowles
- Division of Biomaterials and Tissue Engineering, UCL Eastman Dental Institute
| |
Collapse
|
175
|
Giampetruzzi L, Blasi L, Quarta A, Argentiere S, Cella C, Salvatore L, Madaghiele M, Gigli G, Sannino A. Poly(lactide-co-glycolide) nanoparticles embedded in a micropatterned collagen scaffold for neuronal tissue regeneration. INT J POLYM MATER PO 2017. [DOI: 10.1080/00914037.2016.1217533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Lucia Giampetruzzi
- Istituto Italiano di Tecnologia, Lecce, Italy
- Department of Mathematics and Physics “Ennio De Giorgi”, University of Salento, Lecce, Italy
| | - Laura Blasi
- CNR NANOTEC - Institute of Nanotechnology, University of Salento, Lecce, Italy
| | - Alessandra Quarta
- CNR NANOTEC - Institute of Nanotechnology, University of Salento, Lecce, Italy
| | | | | | - Luca Salvatore
- Department of Engineering for Innovation, University of Salento, Lecce, Italy
| | - Marta Madaghiele
- Department of Engineering for Innovation, University of Salento, Lecce, Italy
| | - Giuseppe Gigli
- Department of Mathematics and Physics “Ennio De Giorgi”, University of Salento, Lecce, Italy
- CNR NANOTEC - Institute of Nanotechnology, University of Salento, Lecce, Italy
| | - Alessandro Sannino
- Department of Engineering for Innovation, University of Salento, Lecce, Italy
| |
Collapse
|
176
|
Nielsen JE, Zhu K, Sande SA, Kováčik L, Cmarko D, Knudsen KD, Nyström B. Structural and Rheological Properties of Temperature-Responsive Amphiphilic Triblock Copolymers in Aqueous Media. J Phys Chem B 2017; 121:4885-4899. [PMID: 28430448 DOI: 10.1021/acs.jpcb.7b01174] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Thermoresponsive amphiphilic biodegradable block copolymers of the type poly(ε-caprolactone-co-lactide)-poly(ethylene glycol)-poly(ε-caprolactone-co-lactide) (PCLA-PEGm-PCLA) have great potential for various biomedical applications. In the present study, we have surveyed the effects of PEG spacer length (m = 1000 and 1500), temperature, and polymer concentration on the self-assembling process to form supramolecular structures in aqueous solutions of the PCLA-PEGm-PCLA copolymer. This copolymer has a lower critical solution temperature, and the cloud point depends on both concentration and PEG length. Thermoreversible hydrogels are formed in the semidilute regime; the gel windows in the phase diagrams can be tuned by the concentration and length of the PEG spacer. The rheological properties of both dilute and semidilute samples were characterized; especially the sol-to-gel transition was examined. Small-angle neutron scattering (SANS) experiments reveal fundamental structural differences between the two copolymers for both dilute and semidilute samples. The intensity profiles for the copolymer with the long PEG spacer could be described by a spherical core-shell model over a broad temperature domain, whereas the copolymer with the short hydrophilic spacer forms rod-like species over an extended temperature range. This finding is supported by cryo-TEM images. At temperatures approaching macroscopic phase separation, both copolymers seem to assume extended rod-like structures.
Collapse
Affiliation(s)
- Josefine Eilsø Nielsen
- School of Pharmacy, Department of Pharmaceutics, University of Oslo , P.O. Box 1068, Blindern, N-0316 Oslo, Norway.,Department of Chemistry, University of Oslo , P.O. Box 1033, Blindern, N-0315 Oslo, Norway
| | - Kaizheng Zhu
- Department of Chemistry, University of Oslo , P.O. Box 1033, Blindern, N-0315 Oslo, Norway
| | - Sverre Arne Sande
- School of Pharmacy, Department of Pharmaceutics, University of Oslo , P.O. Box 1068, Blindern, N-0316 Oslo, Norway
| | - Lubomír Kováčik
- Institute of Biology and Medical Genetics, First Faculty of Medicine, Charles University and General University Hospital in Prague , Albertov 4, Prague, 128 01, Czech Republic
| | - Dušan Cmarko
- Institute of Biology and Medical Genetics, First Faculty of Medicine, Charles University and General University Hospital in Prague , Albertov 4, Prague, 128 01, Czech Republic
| | - Kenneth D Knudsen
- Department of Physics, Institute for Energy Technology , P.O. Box 40, N-2027 Kjeller, Norway
| | - Bo Nyström
- Department of Chemistry, University of Oslo , P.O. Box 1033, Blindern, N-0315 Oslo, Norway
| |
Collapse
|
177
|
Naves L, Dhand C, Almeida L, Rajamani L, Ramakrishna S, Soares G. Poly(lactic-co-glycolic) acid drug delivery systems through transdermal pathway: an overview. Prog Biomater 2017; 6:1-11. [PMID: 28168430 PMCID: PMC5433959 DOI: 10.1007/s40204-017-0063-0] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Accepted: 01/22/2017] [Indexed: 01/20/2023] Open
Abstract
In past few decades, scientists have made tremendous advancement in the field of drug delivery systems (DDS), through transdermal pathway, as the skin represents a ready and large surface area for delivering drugs. Efforts are in progress to design efficient transdermal DDS that support sustained drug release at the targeted area for longer duration in the recommended therapeutic window without producing side-effects. Poly(lactic-co-glycolic acid) (PLGA) is one of the most promising Food and Drug Administration approved synthetic polymers in designing versatile drug delivery carriers for different drug administration routes, including transdermal drug delivery. The present review provides a brief introduction over the transdermal drug delivery and PLGA as a material in context to its role in designing drug delivery vehicles. Attempts are made to compile literatures over PLGA-based drug delivery vehicles, including microneedles, nanoparticles, and nanofibers and their role in transdermal drug delivery of different therapeutic agents. Different nanostructure evaluation techniques with their working principles are briefly explained.
Collapse
Affiliation(s)
- Lucas Naves
- Center for Textile Science and Technology, University of Minho, Guimarães, Portugal
- CAPES Foundation, Ministry of Education of Brazil, Brasília, Brazil
- Department of Mechanical Engineering, Center for Nanofibers and Nanotechnology, National University of Singapore, Singapore, 117581, Singapore
| | - Chetna Dhand
- Anti-Infectives Research Group, Singapore Eye Research Institute, Singapore, 169856, Singapore
| | - Luis Almeida
- Center for Textile Science and Technology, University of Minho, Guimarães, Portugal
| | | | - Seeram Ramakrishna
- Department of Mechanical Engineering, Center for Nanofibers and Nanotechnology, National University of Singapore, Singapore, 117581, Singapore
- Guangdong-Hongkong-Macau Institute of CNS Regeneration (GHMICR), Jinan University, Guangzhou, 510632, China
| | - Graça Soares
- Center for Textile Science and Technology, University of Minho, Guimarães, Portugal.
| |
Collapse
|
178
|
Fasehee H, Ghavamzadeh A, Alimoghaddam K, Ghaffari SH, Faghihi S. A Comparative Cytotoxic Evaluation of Disulfiram Encapsulated PLGA Nanoparticles on MCF-7 Cells. Int J Hematol Oncol Stem Cell Res 2017; 11:102-107. [PMID: 28875004 PMCID: PMC5575722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
Abstract
Background: Disulfiram is oral aldehyde dehydrogenase (ALDH) inhibitor that has been used in the treatment of alcoholism. Recent studies show that this drug has anticancer properties; however, its rapid degradation has limited its clinical application. Encapsulation of disulfiram polymeric nanoparticles (NPs) may improve its anticancer activities and protect rapid degradation of the drug. Materials andMethods: A poly (lactide-co-Glycolide) (PLGA) was developed for encapsulation of disulfiram and its delivery into breast cancer cells. Disulfiram encapsulated PLGA NPs were prepared by nanoprecipitation method and were characterized by Scanning Electron Microscopy (SEM). The loading and encapsulation efficiency of NPs were determined using UV-Visible spectroscopy. Cell cytotoxicity of free and encapsulated form of disulfiram is also determined using MTT assay. Results: Disulfiram encapsulated PLGA NPs had uniform size with 165 nm. Drug loading and entrapment efficiency were 5.35 ±0.03% and 58.85±1.01%. The results of MTT assay showed that disulfiram encapsulated PLGA NPs were more potent in induction of apoptosis compare to free disulfiram. Conclusion: Based on the results obtained in the present study it can be concluded that encapsulation of disulfiram with PLGA can protect its degradation in improve its cytotoxicity on breast cancer cells.
Collapse
Affiliation(s)
- Hamidreza Fasehee
- Stem Cell and Regenerative Medicine Group, National Institute of Genetic Engineering and Biotechnology (NIGEB), Tehran, Iran
| | - Ardeshir Ghavamzadeh
- Hematology, Oncology and Stem Cell Transplantation Research Center, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Kamran Alimoghaddam
- Hematology, Oncology and Stem Cell Transplantation Research Center, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Seyed-Hamidollah Ghaffari
- Hematology, Oncology and Stem Cell Transplantation Research Center, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Shahab Faghihi
- Stem Cell and Regenerative Medicine Group, National Institute of Genetic Engineering and Biotechnology (NIGEB), Tehran, Iran
| |
Collapse
|
179
|
Caldas Dos Santos T, Rescignano N, Boff L, Reginatto FH, Simões CMO, de Campos AM, Mijangos C. In vitro antiherpes effect of C-glycosyl flavonoid enriched fraction of Cecropia glaziovii encapsulated in PLGA nanoparticles. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 75:1214-1220. [PMID: 28415409 DOI: 10.1016/j.msec.2017.02.135] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 12/15/2016] [Accepted: 02/24/2017] [Indexed: 01/18/2023]
Abstract
In this work is reported a novel and promising approach for the preparation of C-glycosylflavonoid enriched fraction of Cecropia glaziovii (EFF-Cg) loaded PLGA nanoparticles (NP) with antiherpes properties. The purpose of this study was to evaluate and to compare the effect of two nonionic surfactants (poloxamer 188 (PLU) and polyvinyl alcohol (PVA)), and also an emulsion stabilized by solid particles of cellulose nanocrystal (CNC) in place of surfactants. The characterization of these nanoparticles was in terms of size, polydispersity index, zeta potential, morphology, thermogravimetric analysis (TGA), loading capacity and percent yield. Since TGA analysis revealed thermo stability especially for NP-PLU, this formulation was selected for the evaluation of drug release profile, cytotoxicity and antiherpes activity. The drug delivery profile demonstrated a sustained release through the polymer structure and a significant reduction of the polymer molecular weight at 21-day period. The cytotoxicity of these nanoparticles was determined on Vero cells, and the selected formulation did not exhibit cytotoxicity even at the highest tested concentration. The results demonstrated a potential antiherpetic effect of the EFF-Cg loaded NP at 48h of testing. In summary, EFF-Cg loaded NP exhibited a promising system for the effective drug delivery in the treatment of herpes infections.
Collapse
Affiliation(s)
- Talitha Caldas Dos Santos
- Institute of Polymer Science and Technology, ICTP - CSIC, Madrid 28006, Spain; Department of Pharmaceutical Sciences, Universidade Federal de Santa Catarina, Florianópolis 88040900, Brazil.
| | | | - Laurita Boff
- Department of Pharmaceutical Sciences, Universidade Federal de Santa Catarina, Florianópolis 88040900, Brazil.
| | - Flávio Henrique Reginatto
- Department of Pharmaceutical Sciences, Universidade Federal de Santa Catarina, Florianópolis 88040900, Brazil.
| | | | - Angela Machado de Campos
- Department of Pharmaceutical Sciences, Universidade Federal de Santa Catarina, Florianópolis 88040900, Brazil.
| | - Carmen Mijangos
- Institute of Polymer Science and Technology, ICTP - CSIC, Madrid 28006, Spain.
| |
Collapse
|
180
|
Mehanny M, Hathout RM, Geneidi AS, Mansour S. Studying the effect of physically-adsorbed coating polymers on the cytotoxic activity of optimized bisdemethoxycurcumin loaded-PLGA nanoparticles. J Biomed Mater Res A 2017; 105:1433-1445. [PMID: 28177570 DOI: 10.1002/jbm.a.36028] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 01/18/2017] [Accepted: 02/03/2017] [Indexed: 02/06/2023]
Abstract
The aim of this work was to study the effect of different physically-adsorbed coating polymers on the cytotoxic activity of optimized bisdemethoxycurcumin (BDMC) loaded-PLGA nanoparticles. BDMC-loaded poly(DL-lactide-co-glycolide) (PLGA) nanoparticles were prepared adopting the nanoprecipitation technique according to a full factorial study design. The effects of three independent variables each at two levels, namely: the polymer type, polymer concentration, and poly vinyl alcohol concentration were studied. The particles were optimized regarding particle size and entrapment efficiency where sizes <200 nm and entrapment efficiencies reaching ∼98% were obtained. The particles were further characterized using x-ray diffraction, transmission electron microscopy, and in-vitro release studies. A selected formulation was subjected to physical coating using various coating moieties, namely: PEG 4000, Tween 80 and Pluronic F68, to impart a hydrophilic stealth character to the surface. The surface hydrophobicity was assessed using the Rose Bengal dye test where the hydrophilicity character followed the following order: Tween 80 > PEG 4000 > Pluronic F68. The particles coating rendered the particles suitable for cancer-targeting regarding particle size measurements, morphology, release kinetics, and stability studies. Moreover, cytotoxicity testing was performed using HepG-2 cells. Coated NPs showed the highest inhibition of malignant cells viability compared to the uncoated NPs and free BDMC where the IC50 of Pluronic-F68 coated NPs was 0.54 ± 0.01 µg/mL. The augmented effect against malignant cells poses these particles as a successful cancer remedy. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 105A: 1433-1445, 2017.
Collapse
Affiliation(s)
- Mina Mehanny
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt
| | - Rania M Hathout
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt
| | - Ahmed S Geneidi
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt
| | - Samar Mansour
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt.,Department of Pharmaceutical Technology, Faculty of Pharmacy and Biotechnology, German University in Cairo, Egypt
| |
Collapse
|
181
|
Malafeev KV, Moskalyuk OA, Yudin VE, Sedush NG, Chvalun SN, Elokhovskii VY, Popova EN, Ivan’kova EM. Synthesis and properties of fibers prepared from lactic acid–glycolic acid copolymer. POLYMER SCIENCE SERIES A 2017. [DOI: 10.1134/s0965545x17010096] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
182
|
Fawzy AS, Priyadarshini BM, Selvan ST, Lu TB, Neo J. Proanthocyanidins-Loaded Nanoparticles Enhance Dentin Degradation Resistance. J Dent Res 2017; 96:780-789. [PMID: 28182862 DOI: 10.1177/0022034517691757] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Previous studies reported that grapeseed extract (GSE), which is rich in proanthocyanidins (PAs), improves the biodegradation resistance of demineralized dentin. This study aimed to investigate the effect of a new GSE delivery strategy to demineralized dentin through loading into biodegradable polymer poly-[lactic-co-glycolic acid] (PLGA) nanoparticles on the biodegradation resistance in terms of structural stability and surface/bulk mechanical and biochemical properties with storage time in collagenase-containing solutions. GSE-loaded nanoparticles were synthetized by nanoprecipitation at PLGA/GSE (w/w) ratios of 100:75, 100:50, and 100:25 and characterized for their morphological/structural features, physicochemical characteristics, and drug loading, entrapment, and release. Nanoparticle suspensions in distilled water (12.5% w/v) were applied (1 min) to demineralized dentin specimens by simulating pulpal pressure. The nanoparticle delivery was investigated by scanning electron microscopy (SEM)/transmission electron microscopy (TEM), and the GSE release from the delivered nanoparticles was further characterized. The variations in surface and bulk mechanical properties were characterized in terms of reduced elastic-modulus, hardness, nanoindentation testing, and apparent elastic-modulus with a storage time up to 3 mo. Hydroxyproline release with exposure to collagenase up to 7 d was estimated. An etch-and-rinse dentin adhesive was applied to investigate the morphology of the resin-dentin interface after nanoparticle delivery. Treatment with the GSE-loaded nanoparticles enhanced the collagen fibril structural resistance, reflected from the TEM investigation, and improved the biomechanical and biochemical stability of demineralized dentin. Nanoparticles having PLGA/GSE of 100:75 (w/w) showed the highest cumulative GSE release and were associated with the best improvement in biodegradation resistance. TEM/SEM showed the ability of the nanoparticles to infiltrate dentinal tubules' main and lateral branches. SEM revealed the formation of a uniform hybrid layer and well-formed resin tags with the presence of numerous nanoparticles located within the dentinal tubules and/or attached to the resin tag. This study demonstrated the potential significance of delivering collagen crosslinkers loaded into biodegradable polymer nanoparticles through the dentinal tubules of demineralized dentin on the biodegradation resistance.
Collapse
Affiliation(s)
- A S Fawzy
- 1 Discipline of Oral Sciences, Faculty of Dentistry, National University of Singapore, Singapore
| | - B M Priyadarshini
- 1 Discipline of Oral Sciences, Faculty of Dentistry, National University of Singapore, Singapore
| | - S T Selvan
- 2 Institute of Materials Research and Engineering (IMRE), Innovis, Singapore
| | - T B Lu
- 3 Electron Microscopy Unit, YLLSOM, National University of Singapore, Singapore
| | - J Neo
- 4 Discipline of Prosthodontics, Operative Dentistry and Endodontics, Faculty of Dentistry, National University of Singapore, Singapore
| |
Collapse
|
183
|
Khalil IR, Burns ATH, Radecka I, Kowalczuk M, Khalaf T, Adamus G, Johnston B, Khechara MP. Bacterial-Derived Polymer Poly-y-Glutamic Acid (y-PGA)-Based Micro/Nanoparticles as a Delivery System for Antimicrobials and Other Biomedical Applications. Int J Mol Sci 2017; 18:ijms18020313. [PMID: 28157175 PMCID: PMC5343849 DOI: 10.3390/ijms18020313] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2016] [Accepted: 01/18/2017] [Indexed: 12/12/2022] Open
Abstract
In the past decade, poly-γ-glutamic acid (γ-PGA)-based micro/nanoparticles have garnered remarkable attention as antimicrobial agents and for drug delivery, owing to their controlled and sustained-release properties, low toxicity, as well as biocompatibility with tissue and cells. γ-PGA is a naturally occurring biopolymer produced by several gram-positive bacteria that, due to its biodegradable, non-toxic and non-immunogenic properties, has been used successfully in the medical, food and wastewater industries. Moreover, its carboxylic group on the side chains can offer an attachment point to conjugate antimicrobial and various therapeutic agents, or to chemically modify the solubility of the biopolymer. The unique characteristics of γ-PGA have a promising future for medical and pharmaceutical applications. In the present review, the structure, properties and micro/nanoparticle preparation methods of γ-PGA and its derivatives are covered. Also, we have highlighted the impact of micro/nanoencapsulation or immobilisation of antimicrobial agents and various disease-related drugs on biodegradable γ-PGA micro/nanoparticles.
Collapse
Affiliation(s)
- Ibrahim R Khalil
- Faculty of Science and Engineering, University of Wolverhampton, Wulfruna Street, Wolverhampton WV1 1LY, UK.
- Polish Academy of Sciences, Centre of Polymer and Carbon Materials, Zabrze 41-819, Poland.
| | - Alan T H Burns
- Faculty of Science and Engineering, University of Wolverhampton, Wulfruna Street, Wolverhampton WV1 1LY, UK.
| | - Iza Radecka
- Faculty of Science and Engineering, University of Wolverhampton, Wulfruna Street, Wolverhampton WV1 1LY, UK.
| | - Marek Kowalczuk
- Faculty of Science and Engineering, University of Wolverhampton, Wulfruna Street, Wolverhampton WV1 1LY, UK.
- Polish Academy of Sciences, Centre of Polymer and Carbon Materials, Zabrze 41-819, Poland.
| | - Tamara Khalaf
- Faculty of Science and Engineering, University of Wolverhampton, Wulfruna Street, Wolverhampton WV1 1LY, UK.
| | - Grazyna Adamus
- Polish Academy of Sciences, Centre of Polymer and Carbon Materials, Zabrze 41-819, Poland.
| | - Brian Johnston
- Faculty of Science and Engineering, University of Wolverhampton, Wulfruna Street, Wolverhampton WV1 1LY, UK.
| | - Martin P Khechara
- Faculty of Science and Engineering, University of Wolverhampton, Wulfruna Street, Wolverhampton WV1 1LY, UK.
| |
Collapse
|
184
|
Rafiei P, Haddadi A. Docetaxel-loaded PLGA and PLGA-PEG nanoparticles for intravenous application: pharmacokinetics and biodistribution profile. Int J Nanomedicine 2017; 12:935-947. [PMID: 28184163 PMCID: PMC5291330 DOI: 10.2147/ijn.s121881] [Citation(s) in RCA: 177] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Docetaxel is a highly potent anticancer agent being used in a wide spectrum of cancer types. There are important matters of concern regarding the drug’s pharmacokinetics related to the conventional formulation. Poly(lactide-co-glycolide) (PLGA) is a biocompatible/biodegradable polymer with variable physicochemical characteristics, and its application in human has been approved by the United States Food and Drug Administration. PLGA gives polymeric nanoparticles with unique drug delivery characteristics. The application of PLGA nanoparticles (NPs) as intravenous (IV) sustained-release delivery vehicles for docetaxel can favorably modify pharmacokinetics, biofate, and pharmacotherapy of the drug in cancer patients. Surface modification of PLGA NPs with poly(ethylene glycol) (PEG) can further enhance NPs’ long-circulating properties. Herein, an optimized fabrication approach has been used for the preparation of PLGA and PLGA–PEG NPs loaded with docetaxel for IV application. Both types of NP formulations demonstrated in vitro characteristics that were considered suitable for IV administration (with long-circulating sustained-release purposes). NP formulations were IV administered to an animal model, and docetaxel’s pharmacokinetic and biodistribution profiles were determined and compared between study groups. PLGA and PEGylated PLGA NPs were able to modify the pharmacokinetics and biodistribution of docetaxel. Accordingly, the mode of changes made to pharmacokinetics and biodistribution of docetaxel is attributed to the size and surface properties of NPs. NPs contributed to increased blood residence time of docetaxel fulfilling their role as long-circulating sustained-release drug delivery systems. Surface modification of NPs contributed to more pronounced docetaxel blood concentration, which confirms the role of PEG in conferring long-circulation properties to NPs.
Collapse
Affiliation(s)
- Pedram Rafiei
- Division of Pharmacy, College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, SK, Canada
| | - Azita Haddadi
- Division of Pharmacy, College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, SK, Canada
| |
Collapse
|
185
|
Cella C, Gerges I, Milani P, Lenardi C, Argentiere S. Calcium Stearate as an Effective Alternative to Poly(vinyl alcohol) in Poly-Lactic-co-Glycolic Acid Nanoparticles Synthesis. Biomacromolecules 2017; 18:452-460. [PMID: 28030952 DOI: 10.1021/acs.biomac.6b01546] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Poly(d,l-lactic-co-glycolic acid) (PLGA) nanoparticles (NPs) are among the most studied systems for drug and gene targeting. So far, the synthesis of stable and uniform PLGA NPs has involved the use of a large excess of polyvinyl surfactants such as poly(vinyl alcohol) (PVA) and polyvinylpyrrolidone (PVP), whose removal requires multistep purification procedures of high ecological and economic impact. Hence the development of environment-friendly and cost-effective synthetic procedures for the synthesis of PLGA NPs would effectively boost their use in clinics. This work aims to address this issue by investigating more efficacious alternatives to the so far employed polyvinyl surfactants. More specifically, we developed an innovative synthetic process to achieve stable and uniformly distributed PLGA NPs that involves the use of calcium stearate (CSt), gaining benefits of its high biocompatibility and efficacy at low concentrations and avoiding consequently expensive purification steps. With the help of minimum quantities of polysorbate 60 and sorbitane monostearate, CSt-stabilized PLGA NPs with different sizes and structures were synthesized. The influence of CSt on the encapsulation efficiency of bioactive molecules has been also investigated. The effective encapsulation of both hydrophobic (curcumin) and hydrophilic (fibrinogen labeled with Alexa647) biomolecules into NPs was demonstrated by confocal microscopy, and their release quantified by spectrofluorimetric analyses. Finally, degradation and cytotoxicity studies showed that CSt stabilized NPs were stable under physiological conditions and with good biocompatibility, thus looking promising for further investigation as controlled release devices.
Collapse
Affiliation(s)
- Claudia Cella
- Filarete Foundation, viale Ortles 22/4, 20139 Milano, Italy.,SEMM, European School of Molecular Medicine , Campus IFOM-IEO, via Adamello 16, 20139 Milano, Italy
| | - Irini Gerges
- Filarete Foundation, viale Ortles 22/4, 20139 Milano, Italy.,Tensive S.r.l., via Timavo 34, 20124 Milano, Italy
| | - Paolo Milani
- Cimaina and Dipartimento di Fisica, Università degli Studi di Milano , via Celoria 16, 20133 Milano, Italy
| | - Cristina Lenardi
- Cimaina and Dipartimento di Fisica, Università degli Studi di Milano , via Celoria 16, 20133 Milano, Italy
| | | |
Collapse
|
186
|
Kurniawan A, Gunawan F, Nugraha AT, Ismadji S, Wang MJ. Biocompatibility and drug release behavior of curcumin conjugated gold nanoparticles from aminosilane-functionalized electrospun poly( N -vinyl-2-pyrrolidone) fibers. Int J Pharm 2017; 516:158-169. [DOI: 10.1016/j.ijpharm.2016.10.067] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Revised: 09/28/2016] [Accepted: 10/28/2016] [Indexed: 01/15/2023]
|
187
|
Dobhal A, Kulkarni A, Dandekar P, Jain R. A microreactor-based continuous process for controlled synthesis of poly-methyl-methacrylate-methacrylic acid (PMMA) nanoparticles. J Mater Chem B 2017; 5:3404-3417. [DOI: 10.1039/c7tb00560a] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
We have developed a microreactor-based continuous process for synthesizing PMMA nanoparticles (NPs), based on the principle of nanoprecipitation.
Collapse
Affiliation(s)
- Anurag Dobhal
- Department of Pharmaceutical Sciences and Technology
- Institute of Chemical Technology
- Mumbai-400019
- India
- Department of Chemical Engineering
| | - Amol Kulkarni
- Chemical Engineering and Process Development Division
- CSIR-National Chemical Laboratory
- Pune-411008
- India
| | - Prajakta Dandekar
- Department of Pharmaceutical Sciences and Technology
- Institute of Chemical Technology
- Mumbai-400019
- India
| | - Ratnesh Jain
- Department of Chemical Engineering
- Institute of Chemical Technology
- Mumbai- 400019
- India
| |
Collapse
|
188
|
Abamor ES. Antileishmanial activities of caffeic acid phenethyl ester loaded PLGA nanoparticles against Leishmania infantum promastigotes and amastigotes in vitro. ASIAN PAC J TROP MED 2017; 10:25-34. [PMID: 28107861 DOI: 10.1016/j.apjtm.2016.12.006] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Revised: 11/19/2016] [Accepted: 12/18/2016] [Indexed: 12/13/2022] Open
Abstract
OBJECTIVE To investigate and compare the antileishmanial effects of CAPE and (CAPE)PLGA NPs on Leishmania infantum (L. infantum) promastigotes and amastigotes in vitro. METHODS Efficacies of CAPE, (CAPE)PLGA NPs and free PLGA nanoparticles (NPs) on promastigotes were evaluated using MTT and promastigote count assays, and their anti-amastigote effects were determined via infection index analysis. Griess reaction was also performed to calculate nitric oxide production of macrophages exposed to investigated molecules. RESULTS It was determined that CAPE and (CAPE)PLGA NPs demonstrated significant inhibitory effects on L. infantum promastigotes and amastigotes, while free NPs did not exhibit any meaningful antileishmanial effectiveness. The IC50 values of CAPE for L. infantum promastigotes and amastigotes were assessed as (51.0 ± 0.8) and (19.0 ± 1.4) μg/mL, respectively (P < 0.05). On the other side, it was revealed that (CAPE)PLGA NPs had superior antileishmanial activity on both forms of parasites since its IC50 values for L. infantum promastigotes and amastigotes were (32.0 ± 1.3) and (8.0 ± 0.9) μg/mL, respectively (P < 0.05). It was also determined that both agents strongly stimulated nitric oxide production of macrophages. CONCLUSIONS The obtained results show that (CAPE)PLGA NPs have a great potential to be especially used in treatment of visceral leishmaniasis; however, in vivo antileishmanial screening of these molecules should be performed in the near future.
Collapse
Affiliation(s)
- Emrah Sefik Abamor
- Bioengineering Department, Yildiz Technical University, Esenler, Istanbul, Turkey.
| |
Collapse
|
189
|
Alibolandi M, Mohammadi M, Taghdisi SM, Ramezani M, Abnous K. Fabrication of aptamer decorated dextran coated nano-graphene oxide for targeted drug delivery. Carbohydr Polym 2017; 155:218-229. [DOI: 10.1016/j.carbpol.2016.08.046] [Citation(s) in RCA: 96] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Revised: 08/04/2016] [Accepted: 08/15/2016] [Indexed: 11/29/2022]
|
190
|
Lee SY, Cho HJ. Amine-functionalized poly(lactic-co-glycolic acid) nanoparticles for improved cellular uptake and tumor penetration. Colloids Surf B Biointerfaces 2016; 148:85-94. [DOI: 10.1016/j.colsurfb.2016.08.050] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Revised: 08/22/2016] [Accepted: 08/27/2016] [Indexed: 12/18/2022]
|
191
|
S S, S M, P S L S, S S, S B, V P. Hydrophilic poly (ethylene glycol) capped poly (lactic-co-glycolic) acid nanoparticles for subcutaneous delivery of insulin in diabetic rats. Int J Biol Macromol 2016; 95:1190-1198. [PMID: 27825822 DOI: 10.1016/j.ijbiomac.2016.11.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Revised: 10/27/2016] [Accepted: 11/03/2016] [Indexed: 11/24/2022]
Abstract
The aim of the present study is to evaluate the effect of insulin loaded poly(ethylene glycol) capped poly(lactic-co-glycolic)acid nanoparticles (ISPPLG NPs) by subcutaneous administration in diabetic rats. A series of biodegradable low molecular weight PLGA [90/10 (PLG2) and 80/20 (PLG4)] copolymers were synthesized by melt polycondensation and their ISPPLG NPs were synthesized by water-oil-water (W/O/W) emulsion solvent evaporation method. The PLGA copolymers and their nanoparticles were characterized. The maximum encapsulation efficiency of ISPPLG4 NPs is 66% and the diameter of the nanoparticles is about 140nm. The in-vivo studies of ISPPLG NPs carried out in diabetic rats by subcutaneous administration show considerable reduction in serum glucose level along with partial restoration of tissue defense systems. Histopathological studies reveal that ISPPLG NPs could restore the damages caused by oxidants during hyperglycaemia. The subcutaneous administration of ISPPLG4 NPs is thus an effective method of reducing hyperglycaemia associated complications.
Collapse
Affiliation(s)
- Saravanan S
- Department of Veterinary Biochemistry, Madras Veterinary College, Chennai, 600007, Tamilnadu, India
| | - Malathi S
- Department of Inorganic Chemistry, Guindy Campus, University of Madras, Chennai, 600025, Tamilnadu, India
| | - Sesh P S L
- Department of Veterinary Biochemistry, Madras Veterinary College, Chennai, 600007, Tamilnadu, India
| | - Selvasubramanian S
- Department of Veterinary Pharmacology and Toxicology, Madras Veterinary College, Chennai, 600007, Tamilnadu, India
| | - Balasubramanian S
- Department of Inorganic Chemistry, Guindy Campus, University of Madras, Chennai, 600025, Tamilnadu, India.
| | - Pandiyan V
- Department of Veterinary Biochemistry, Madras Veterinary College, Chennai, 600007, Tamilnadu, India
| |
Collapse
|
192
|
Khan I, Gothwal A, Sharma AK, Qayum A, Singh SK, Gupta U. Biodegradable nano-architectural PEGylated approach for the improved stability and anticancer efficacy of bendamustine. Int J Biol Macromol 2016; 92:1242-1251. [DOI: 10.1016/j.ijbiomac.2016.08.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Revised: 07/23/2016] [Accepted: 08/02/2016] [Indexed: 12/18/2022]
|
193
|
Gonnissen D, Qu Y, Langer K, Öztürk C, Zhao Y, Chen C, Seebohm G, Düfer M, Fuchs H, Galla HJ, Riehemann K. Comparison of cellular effects of starch-coated SPIONs and poly(lactic-co-glycolic acid) matrix nanoparticles on human monocytes. Int J Nanomedicine 2016; 11:5221-5236. [PMID: 27789942 PMCID: PMC5072557 DOI: 10.2147/ijn.s106540] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Within the last years, progress has been made in the knowledge of the properties of medically used nanoparticles and their toxic effects, but still, little is known about their influence on cellular processes of immune cells. The aim of our comparative study was to present the influence of two different nanoparticle types on subcellular processes of primary monocytes and the leukemic monocyte cell line MM6. We used core-shell starch-coated superparamagnetic iron oxide nanoparticles (SPIONs) and matrix poly(lactic-co-glycolic acid) (PLGA) nanoparticles for our experiments. In addition to typical biocompatibility testing like the detection of necrosis or secretion of interleukins (ILs), we investigated the impact of these nanoparticles on the actin cytoskeleton and the two voltage-gated potassium channels Kv1.3 and Kv7.1. Induction of necrosis was not seen for PLGA nanoparticles and SPIONs in primary monocytes and MM6 cells. Likewise, no alteration in secretion of IL-1β and IL-10 was detected under the same experimental conditions. In contrast, IL-6 secretion was exclusively downregulated in primary monocytes after contact with both nanoparticles. Two-electrode voltage clamp experiments revealed that both nanoparticles reduce currents of the aforementioned potassium channels. The two nanoparticles differed significantly in their impact on the actin cytoskeleton, demonstrated via atomic force microscopy elasticity measurement and phalloidin staining. While SPIONs led to the disruption of the respective cytoskeleton, PLGA did not show any influence in both experimental setups. The difference in the effects on ion channels and the actin cytoskeleton suggests that nanoparticles affect these subcellular components via different pathways. Our data indicate that the alteration of the cytoskeleton and the effect on ion channels are new parameters that describe the influence of nanoparticles on cells. The results are highly relevant for medical application and further evaluation of nanomaterial biosafety.
Collapse
Affiliation(s)
- Dominik Gonnissen
- Center for Nanotechnology, Institute of Physics, University of Münster, Münster, Germany
| | - Ying Qu
- Center for Nanotechnology, Institute of Physics, University of Münster, Münster, Germany; National Center for Nanoscience and Technology, Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Klaus Langer
- Institute of Pharmaceutical Technology and Biopharmacy, University of Münster, Münster
| | | | - Yuliang Zhao
- National Center for Nanoscience and Technology, Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Chunying Chen
- National Center for Nanoscience and Technology, Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Guiscard Seebohm
- Department of Cardiovascular Medicine, Institute for Genetics of Heart Diseases, University Hospital Münster
| | - Martina Düfer
- Department of Pharmacology, Institute of Pharmaceutical and Medicinal Chemistry
| | - Harald Fuchs
- Center for Nanotechnology, Institute of Physics, University of Münster, Münster, Germany
| | - Hans-Joachim Galla
- Department of Cell Biology/Biophysics, Institute of Biochemistry, University of Münster, Münster, Germany
| | - Kristina Riehemann
- Center for Nanotechnology, Institute of Physics, University of Münster, Münster, Germany
| |
Collapse
|
194
|
Parhizkar M, Reardon PJT, Knowles JC, Browning RJ, Stride E, Barbara PR, Harker AH, Edirisinghe M. Electrohydrodynamic encapsulation of cisplatin in poly (lactic-co-glycolic acid) nanoparticles for controlled drug delivery. NANOMEDICINE : NANOTECHNOLOGY, BIOLOGY, AND MEDICINE 2016; 12:1919-1929. [PMID: 27184098 DOI: 10.1016/j.nano.2016.05.005] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Revised: 05/01/2016] [Accepted: 05/05/2016] [Indexed: 11/29/2022]
Abstract
Targeted delivery of potent, toxic chemotherapy drugs, such as cisplatin, is a significant area of research in cancer treatment. In this study, cisplatin was successfully encapsulated with high efficiency (>70%) in poly (lactic-co-glycolic acid) polymeric nanoparticles by using electrohydrodynamic atomization (EHDA) where applied voltage and solution flow rate as well as the concentration of cisplatin and polymer were varied to control the size of the particles. Thus, nanoparticles were produced with three different drug:polymer ratios (2.5, 5 and 10wt% cisplatin). It was shown that smaller nanoparticles were produced with 10wt% cisplatin. Furthermore, these demonstrated the best sustained release (smallest burst release). By fitting the experimental data with various kinetic models it was concluded that the release is dependent upon the particle morphology and the drug concentration. Thus, these particles have significant potential for cisplatin delivery with controlled dosage and release period that are crucial chemotherapy parameters.
Collapse
Affiliation(s)
- Maryam Parhizkar
- Mechanical Engineering, University College London, London, United Kingdom
| | - Philip J T Reardon
- Division of Biomaterials and Tissue Engineering, UCL Eastman Dental Institute, University College London, London, United Kingdom
| | - Jonathan C Knowles
- Division of Biomaterials and Tissue Engineering, UCL Eastman Dental Institute, University College London, London, United Kingdom
| | - Richard J Browning
- Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, Oxford, United Kingdom
| | - Eleanor Stride
- Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, Oxford, United Kingdom
| | - Pedley R Barbara
- UCL Cancer Institute, Department of Oncology, University College London, London, United Kingdom
| | - Anthony H Harker
- Department of Physics & Astronomy, University College London, London, United Kingdom
| | - Mohan Edirisinghe
- Mechanical Engineering, University College London, London, United Kingdom.
| |
Collapse
|
195
|
Lee SY, Jung E, Park JH, Park JW, Shim CK, Kim DD, Yoon IS, Cho HJ. Transient aggregation of chitosan-modified poly(d,l-lactic-co-glycolic) acid nanoparticles in the blood stream and improved lung targeting efficiency. J Colloid Interface Sci 2016; 480:102-108. [DOI: 10.1016/j.jcis.2016.07.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Revised: 07/04/2016] [Accepted: 07/05/2016] [Indexed: 02/02/2023]
|
196
|
Lee CY, Ooi IH. Preparation of Temozolomide-Loaded Nanoparticles for Glioblastoma Multiforme Targeting-Ideal Versus Reality. Pharmaceuticals (Basel) 2016; 9:ph9030054. [PMID: 27618068 PMCID: PMC5039507 DOI: 10.3390/ph9030054] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Revised: 08/15/2016] [Accepted: 08/24/2016] [Indexed: 12/13/2022] Open
Abstract
Temozolomide (TMZ) is one of the most effective chemotherapeutic agents for glioblastoma multiforme, but the required high administration dose is accompanied by side effects. To overcome this problem and to further improve TMZ’s efficacy, targeted delivery of TMZ by using polymeric nanoparticles has been explored. We synthesised the PLGA-PEG-FOL copolymer and attempted encapsulation of TMZ into PLGA-PEG-FOL nanoparticles using the emulsion solvent evaporation method and the nanoprecipitation method. Conjugation of PEG and FOL to PLGA has been reported to be able to increase the delivery of TMZ to the brain as well as targeting the glioma cells. However, despite making numerous modifications to these methods, the loading of TMZ in the nanoparticles only ranged between 0.2% and 2%, and the nanoparticles were between 400 nm and 600 nm in size after freeze-drying. We proceed with determining the release profile of TMZ in phosphate buffered saline (PBS). Our initial data indicated that TMZ was slowly released from the nanoparticles. The metabolite of TMZ rather than the parent compound was detected in PBS. Our study suggests that while PLGA-PEG-FOL can be used as a polymeric or encapsulation material for central delivery of TMZ, a practical and cost effective formulation method is still far from reach.
Collapse
Affiliation(s)
- Chooi Yeng Lee
- School of Pharmacy, Monash University Malaysia, Bandar Sunway, Selangor 47500, Malaysia.
| | - Ing Hong Ooi
- Department of Pharmaceutical Chemistry, School of Pharmacy, International Medical University, Kuala Lumpur 57000, Malaysia.
| |
Collapse
|
197
|
Mirzaie ZH, Irani S, Mirfakhraie R, Atyabi SM, Dinarvand M, Dinarvand R, Varshochian R, Atyabi F. Docetaxel-Chitosan nanoparticles for breast cancer treatment: cell viability and gene expression study. Chem Biol Drug Des 2016; 88:850-858. [DOI: 10.1111/cbdd.12814] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2015] [Revised: 04/12/2016] [Accepted: 06/26/2016] [Indexed: 01/02/2023]
Affiliation(s)
- Zahra H. Mirzaie
- Department of Biology; Science and Research Branch; Islamic Azad University; Tehran Iran
| | - Shiva Irani
- Department of Biology; Science and Research Branch; Islamic Azad University; Tehran Iran
| | - Reza Mirfakhraie
- Department of Medical Genetics; Shahid Beheshti University of Medical Sciences; Tehran Iran
| | | | - Meshkat Dinarvand
- Nanotechnology Research Center; Faculty of Pharmacy; Tehran University of Medical Sciences; Tehran Iran
| | - Rassoul Dinarvand
- Nanotechnology Research Center; Faculty of Pharmacy; Tehran University of Medical Sciences; Tehran Iran
- Department of Pharmaceutical Nanotechnology; Faculty of Pharmacy; Tehran University of Medical Sciences; Tehran Iran
| | - Reyhaneh Varshochian
- Nanotechnology Research Center; Faculty of Pharmacy; Tehran University of Medical Sciences; Tehran Iran
| | - Fatemeh Atyabi
- Nanotechnology Research Center; Faculty of Pharmacy; Tehran University of Medical Sciences; Tehran Iran
- Department of Pharmaceutical Nanotechnology; Faculty of Pharmacy; Tehran University of Medical Sciences; Tehran Iran
| |
Collapse
|
198
|
Günday Türeli N, Türeli AE, Schneider M. Counter-ion complexes for enhanced drug loading in nanocarriers: Proof-of-concept and beyond. Int J Pharm 2016; 511:994-1001. [PMID: 27520732 DOI: 10.1016/j.ijpharm.2016.08.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Revised: 08/02/2016] [Accepted: 08/03/2016] [Indexed: 12/20/2022]
Abstract
Enhanced drug loading is an important prerequisite of nanomedicines, to reach administration dose while reducing the amount of excipient. Considering biocompatible and biodegradable polymers such as PLGA, pH dependent solubility characteristics along with limited organic solvent solubility of the drug hampers nanoparticle (NP) preparation. To improve loading of such molecules, a method based on using counter ions for complex formation is proposed. Formed complex alters the intrinsic solubility of active substance via electrostatic interaction without chemical modification. A proof-of-concept study was conducted with sodium dodecyl sulfate as counter-ion to fluoroquinolone antibiotic ciprofloxacin. Complex formation resulted in suppressed pH dependent solubility over pH 1.2-9.0 and an additional -80 fold increase in organic solubility was achieved. In consequence, NPs prepared by microjet reactor technology have shown enhanced drug loading efficiencies (-78%) and drug loading of 14%. Moreover, the counter-ion concept was also demonstrated with another class of antibiotics, water soluble aminoglycosides gentamycin and tobramycin. In addition, the counter ion was substituted by degradable excipients such as phosphatidic acid derivatives. Successful implementation has proven the counter-ion concept to be a platform concept that can be successfully implemented for a variety of active substances and counter-ions to enhance drug loading in nanocarriers.
Collapse
Affiliation(s)
- Nazende Günday Türeli
- MJR PharmJet GmbH, Industriestr. 1B, 66802 Überherrn, Germany; Department of Pharmacy, Biopharmaceutics and Pharmaceutical Technology, Saarland University, 66123 Saarbrücken, Germany
| | - Akif E Türeli
- MJR PharmJet GmbH, Industriestr. 1B, 66802 Überherrn, Germany
| | - Marc Schneider
- Department of Pharmacy, Biopharmaceutics and Pharmaceutical Technology, Saarland University, 66123 Saarbrücken, Germany.
| |
Collapse
|
199
|
Lin WJ, Lee WC, Shieh MJ. Hyaluronic acid conjugated micelles possessing CD44 targeting potential for gene delivery. Carbohydr Polym 2016; 155:101-108. [PMID: 27702492 DOI: 10.1016/j.carbpol.2016.08.021] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Revised: 07/28/2016] [Accepted: 08/08/2016] [Indexed: 11/17/2022]
Abstract
The high- and low-molecular weight hyaluronic acid (HHA and LHA) were used to conjugate with PLGA-PEG copolymers which were applied to encapsulate DOTAP/pDNA (D/P) lipoplex as a CD44-targeted micelle delivery system. The size and zeta potential of DNA loaded micelles were measured. The cytotoxicity and cellular transfection of DNA loaded micelles were performed in CD44-positive MDA-MB-231 and MCF-7 cancer cells and CD44-negative HepG2 cells. The endocytosis mechanism of micelles was investigated further. The DNA loaded HA-conjugated micelles possessed negative-charged character which prevented erythrocytes from agglutination. Both LHA-PEG-PLGA and HHA-PEG-PLGA micelles had comparable cellular viability in L929 normal cells. The cellular transfection of HHA-PEG-PLGA micelles was much higher than of LHA-PEG-PLGA micelles in CD44-positive cells. The specific and strong binding of HHA to CD44-positive cells resulted in the cellular transfection of HHA-PEG-PLGA micelles in CD44-positive cells significantly higher than in CD44-negative cells.
Collapse
Affiliation(s)
- Wen Jen Lin
- Graduate Institute of Pharmaceutical Sciences, School of Pharmacy, National Taiwan University, Taipei, Taiwan; Drug Research Center, College of Medicine, National Taiwan University, Taipei, Taiwan.
| | - Wei-Chi Lee
- Graduate Institute of Pharmaceutical Sciences, School of Pharmacy, National Taiwan University, Taipei, Taiwan
| | - Ming-Jium Shieh
- Institute of Biomedical Engineering, National Taiwan University, Taipei, Taiwan
| |
Collapse
|
200
|
Mullick Chowdhury S, Wang TY, Bachawal S, Devulapally R, Choe JW, Abou Elkacem L, Yakub BK, Wang DS, Tian L, Paulmurugan R, Willmann JK. Ultrasound-guided therapeutic modulation of hepatocellular carcinoma using complementary microRNAs. J Control Release 2016; 238:272-280. [PMID: 27503707 DOI: 10.1016/j.jconrel.2016.08.005] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Revised: 07/05/2016] [Accepted: 08/03/2016] [Indexed: 12/22/2022]
Abstract
Treatment options for patients with hepatocellular carcinoma (HCC) are limited, in particular in advanced and drug resistant HCC. MicroRNAs (miRNA) are non-coding small RNAs that are emerging as novel drugs for the treatment of cancer. The aim of this study was to assess treatment effects of two complementary miRNAs (sense miRNA-122, and antisense antimiR-21) encapsulated in biodegradable poly (lactic-co-glycolic acid) nanoparticles (PLGA-NP), administered by an ultrasound-guided and microbubble-enhanced delivery approach in doxorubicin-resistant and non-resistant human HCC xenografts. Proliferation and invasiveness of human HCC cells after miRNA-122/antimiR-21 and doxorubicin treatment were assessed in vitro. Confocal microscopy and qRT-PCR were used to visualize and quantitate successful intracellular miRNA-loaded PLGA-NP delivery. Up and down-regulation of miRNA downstream targets and multidrug resistance proteins and extent of apoptosis were assessed in vivo in treated human HCC xenografts in mice. Compared to single miRNA therapy, combination therapy with the two complementary miRNAs resulted in significantly (P<0.05) stronger decrease in cell proliferation, invasion, and migration of HCC cells as well as higher resensitization to doxorubicin. Ultrasound-guided delivery significantly increased in vivo miRNA-loaded PLGA-NP delivery in human HCC xenografts compared to control conditions by 5-9 fold (P<0.001). miRNA-loaded PLGA-NP were internalized in HCC cells and anti-apoptotic proteins were down regulated with apoptosis in ~27% of the tumor volume of doxorubicin-resistant human HCC after a single treatment with complementary miRNAs and doxorubicin. Thus, ultrasound-guided delivery of complementary miRNAs is highly efficient in the treatment of doxorubicin- resistant and non-resistant HCC. Further development of this new treatment approach could aid in better treatment of patients with HCC.
Collapse
Affiliation(s)
- Sayan Mullick Chowdhury
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University School of Medicine, Stanford, CA, USA
| | - Tzu-Yin Wang
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University School of Medicine, Stanford, CA, USA
| | - Sunitha Bachawal
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University School of Medicine, Stanford, CA, USA
| | - Rammohan Devulapally
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University School of Medicine, Stanford, CA, USA
| | - Jung Woo Choe
- Department of Electrical Engineering, Stanford University Stanford, CA, USA
| | - Lotfi Abou Elkacem
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University School of Medicine, Stanford, CA, USA
| | - Butrus Khuri Yakub
- Department of Electrical Engineering, Stanford University Stanford, CA, USA
| | - David S Wang
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University School of Medicine, Stanford, CA, USA
| | - Lu Tian
- Department of Health, Research & Policy, Stanford University, Stanford, CA, USA
| | - Ramasamy Paulmurugan
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University School of Medicine, Stanford, CA, USA.
| | - Jürgen K Willmann
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University School of Medicine, Stanford, CA, USA.
| |
Collapse
|