1
|
Gareev K, Tagaeva R, Bobkov D, Yudintceva N, Goncharova D, Combs SE, Ten A, Samochernych K, Shevtsov M. Passing of Nanocarriers across the Histohematic Barriers: Current Approaches for Tumor Theranostics. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1140. [PMID: 37049234 PMCID: PMC10096980 DOI: 10.3390/nano13071140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Revised: 03/19/2023] [Accepted: 03/20/2023] [Indexed: 06/19/2023]
Abstract
Over the past several decades, nanocarriers have demonstrated diagnostic and therapeutic (i.e., theranostic) potencies in translational oncology, and some agents have been further translated into clinical trials. However, the practical application of nanoparticle-based medicine in living organisms is limited by physiological barriers (blood-tissue barriers), which significantly hampers the transport of nanoparticles from the blood into the tumor tissue. This review focuses on several approaches that facilitate the translocation of nanoparticles across blood-tissue barriers (BTBs) to efficiently accumulate in the tumor. To overcome the challenge of BTBs, several methods have been proposed, including the functionalization of particle surfaces with cell-penetrating peptides (e.g., TAT, SynB1, penetratin, R8, RGD, angiopep-2), which increases the passing of particles across tissue barriers. Another promising strategy could be based either on the application of various chemical agents (e.g., efflux pump inhibitors, disruptors of tight junctions, etc.) or physical methods (e.g., magnetic field, electroporation, photoacoustic cavitation, etc.), which have been shown to further increase the permeability of barriers.
Collapse
Affiliation(s)
- Kamil Gareev
- Institute of Cytology of the Russian Academy of Sciences (RAS), 194064 Saint Petersburg, Russia
- Department of Micro and Nanoelectronics, Saint Petersburg Electrotechnical University “LETI”, 197022 Saint Petersburg, Russia
| | - Ruslana Tagaeva
- Institute of Cytology of the Russian Academy of Sciences (RAS), 194064 Saint Petersburg, Russia
- Personalized Medicine Centre, Almazov National Medical Research Centre, 2 Akkuratova Str., 197341 Saint Petersburg, Russia
| | - Danila Bobkov
- Institute of Cytology of the Russian Academy of Sciences (RAS), 194064 Saint Petersburg, Russia
- Personalized Medicine Centre, Almazov National Medical Research Centre, 2 Akkuratova Str., 197341 Saint Petersburg, Russia
| | - Natalia Yudintceva
- Institute of Cytology of the Russian Academy of Sciences (RAS), 194064 Saint Petersburg, Russia
- Personalized Medicine Centre, Almazov National Medical Research Centre, 2 Akkuratova Str., 197341 Saint Petersburg, Russia
| | - Daria Goncharova
- Institute of Cytology of the Russian Academy of Sciences (RAS), 194064 Saint Petersburg, Russia
- Personalized Medicine Centre, Almazov National Medical Research Centre, 2 Akkuratova Str., 197341 Saint Petersburg, Russia
| | - Stephanie E. Combs
- Department of Radiation Oncology, Technishe Universität München (TUM), Klinikum rechts der Isar, Ismaningerstr. 22, 81675 Munich, Germany
| | - Artem Ten
- Institute of Life Sciences and Biomedicine, Far Eastern Federal University, 690922 Vladivostok, Russia
| | - Konstantin Samochernych
- Personalized Medicine Centre, Almazov National Medical Research Centre, 2 Akkuratova Str., 197341 Saint Petersburg, Russia
| | - Maxim Shevtsov
- Institute of Cytology of the Russian Academy of Sciences (RAS), 194064 Saint Petersburg, Russia
- Personalized Medicine Centre, Almazov National Medical Research Centre, 2 Akkuratova Str., 197341 Saint Petersburg, Russia
- Department of Radiation Oncology, Technishe Universität München (TUM), Klinikum rechts der Isar, Ismaningerstr. 22, 81675 Munich, Germany
- Institute of Life Sciences and Biomedicine, Far Eastern Federal University, 690922 Vladivostok, Russia
| |
Collapse
|
2
|
Monroe M, Flexner C, Cui H. Harnessing nanostructured systems for improved treatment and prevention of HIV disease. Bioeng Transl Med 2018; 3:102-123. [PMID: 30065966 PMCID: PMC6063869 DOI: 10.1002/btm2.10096] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 05/15/2018] [Accepted: 05/17/2018] [Indexed: 12/12/2022] Open
Abstract
Combination antiretroviral therapy effectively controls human immunodeficiency virus (HIV) viral replication, delaying the progression to acquired immune deficiency syndrome and improving and extending quality of life of patients. However, the inability of antiretroviral therapeutics to target latent virus and their poor penetration of viral reserve tissues result in the need for continued treatment for the life of the patient. Side effects from long-term antiretroviral use and the development of drug resistance due to patient noncompliance are also continuing problems. Nanostructured systems of antiretroviral therapeutics have the potential to improve targeted delivery to viral reservoirs, reduce drug toxicity, and increase dosing intervals, thereby improving treatment outcomes and enhancing patient adherence. Despite these advantages, very few nanostructured antiretroviral delivery systems have made it to clinical trials due to challenges in preclinical and clinical development. In this context, we review the current challenges in HIV disease management, and the recent progress in leveraging the unique performance of nanostructured systems in therapeutic delivery for improved treatment and prevention of this incurable human disease.
Collapse
Affiliation(s)
- Maya Monroe
- Dept. of Chemical and Biomolecular Engineering The Johns Hopkins University, 3400 N Charles Street Baltimore MD 21218.,Institute for NanoBioTechnology The Johns Hopkins University, 3400 N Charles Street Baltimore MD 21218
| | - Charles Flexner
- Div. of Clinical Pharmacology and Infectious Diseases Johns Hopkins University School of Medicine and Bloomberg School of Public Health Baltimore MD 21205
| | - Honggang Cui
- Dept. of Chemical and Biomolecular Engineering The Johns Hopkins University, 3400 N Charles Street Baltimore MD 21218.,Institute for NanoBioTechnology The Johns Hopkins University, 3400 N Charles Street Baltimore MD 21218.,Dept. of Oncology, Sidney Kimmel Comprehensive Cancer Center The Johns Hopkins University School of Medicine Baltimore MD 21205.,Center for Nanomedicine The Wilmer Eye Institute, The Johns Hopkins University School of Medicine Baltimore MD 21231
| |
Collapse
|
3
|
Kuo YC, Lee CH, Rajesh R. Recent advances in the treatment of glioblastoma multiforme by inhibiting angiogenesis and using nanocarrier systems. J Taiwan Inst Chem Eng 2017. [DOI: 10.1016/j.jtice.2017.04.034] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
|
4
|
Nia AH, Eshghi H, Abnous K, Ramezani M. The intracellular delivery of plasmid DNA using cationic reducible carbon nanotube — Disulfide conjugates of polyethylenimine. Eur J Pharm Sci 2017; 100:176-186. [DOI: 10.1016/j.ejps.2017.01.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2016] [Revised: 12/31/2016] [Accepted: 01/13/2017] [Indexed: 12/16/2022]
|
5
|
Shao J, Kraft JC, Li B, Yu J, Freeling J, Koehn J, Ho RJ. Nanodrug formulations to enhance HIV drug exposure in lymphoid tissues and cells: clinical significance and potential impact on treatment and eradication of HIV/AIDS. Nanomedicine (Lond) 2016; 11:545-64. [PMID: 26892323 DOI: 10.2217/nnm.16.1] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Although oral combination antiretroviral therapy effectively clears plasma HIV, patients on oral drugs exhibit much lower drug concentrations in lymph nodes than blood. This drug insufficiency is linked to residual HIV in cells of lymph nodes. While nanoformulations improve drug solubility, safety and delivery, most HIV nanoformulations are intended to extend plasma levels. A stable nanodrug combination that transports, delivers and accumulates in lymph nodes is needed to clear HIV in lymphoid tissues. This review discusses limitations of current oral combination antiretroviral therapy and advances in anti-HIV nanoformulations. A 'systems approach' has been proposed to overcome these limitations. This concept has been used to develop nanoformulations for overcoming drug insufficiency, extending cell and tissue exposure and clearing virus for treating HIV/AIDS.
Collapse
Affiliation(s)
- Jingwei Shao
- Cancer Metastasis Alert & Prevention Center, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350002, PR China.,Department of Pharmaceutics, University of Washington, Seattle, WA 98195, USA
| | - John C Kraft
- Department of Pharmaceutics, University of Washington, Seattle, WA 98195, USA
| | - Bowen Li
- Department of Bioengineering, University of Washington, Seattle, WA 98195, USA
| | - Jesse Yu
- Department of Pharmaceutics, University of Washington, Seattle, WA 98195, USA
| | - Jennifer Freeling
- Department of Pharmaceutics, University of Washington, Seattle, WA 98195, USA
| | - Josefin Koehn
- Department of Pharmaceutics, University of Washington, Seattle, WA 98195, USA
| | - Rodney Jy Ho
- Cancer Metastasis Alert & Prevention Center, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350002, PR China.,Department of Pharmaceutics, University of Washington, Seattle, WA 98195, USA.,Department of Bioengineering, University of Washington, Seattle, WA 98195, USA
| |
Collapse
|
6
|
Targeting microbubbles-carrying TGFβ1 inhibitor combined with ultrasound sonication induce BBB/BTB disruption to enhance nanomedicine treatment for brain tumors. J Control Release 2015; 211:53-62. [PMID: 26047759 DOI: 10.1016/j.jconrel.2015.05.288] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Revised: 05/10/2015] [Accepted: 05/30/2015] [Indexed: 01/08/2023]
Abstract
The clinical application of chemotherapy for brain cancer tumors remains a challenge due to difficulties in the transport of therapeutic agents across the blood-brain barrier/blood-tumor barrier (BBB/BTB). In this study, we developed des-octanoyl ghrelin-conjugated microbubbles (GMB) loaded with TGFβ1 inhibitor (LY364947) (GMBL) to induce BBB/BTB disruption for ultrasound (US) sonication with GMBL. The in-vitro stability study showed that GMB was pretty stable over one month. The in-vivo study showed that the accumulation of superparamagnetic iron oxide nanoparticles (SPION) in the sonicated tumor was significantly higher for focused US sonication in the presence of GMBL, indicating that GMBL/US can locally disrupt BBB/BTB to promote vascular permeability of nanoparticles. In addition, the combination of folate-conjugated polymersomal doxorubicin (FPD) and GMBL/US (FPD+GMBL/US) achieved the best anti-glioma effect and significant improvement in the overall survival time for brain tumor-bearing mice. When combined with focused US, GMBL facilitated local BBB/BTB disruption and simultaneously released LY364947 to decrease the pericyte coverage of the endothelium at the targeted brain tumor sites, resulting in enhanced accumulation and antitumor activity of FPD. The overall results indicate that GMBL/US owns a great potential for non-invasive targeting delivery of nanomedicine across the BBB to treat central nervous system (CNS) diseases.
Collapse
|
7
|
Kuo YC, Lee CH. Inhibition Against Growth of Glioblastoma Multiforme In Vitro Using Etoposide-Loaded Solid Lipid Nanoparticles with ρ-Aminophenyl-α-D-Manno-Pyranoside and Folic Acid. J Pharm Sci 2015; 104:1804-14. [DOI: 10.1002/jps.24388] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Revised: 01/14/2015] [Accepted: 01/23/2015] [Indexed: 12/19/2022]
|
8
|
Kuo YC, Lin CY. Targeting delivery of liposomes with conjugated p-aminophenyl-α-d-manno-pyranoside and apolipoprotein E for inhibiting neuronal degeneration insulted with β-amyloid peptide. J Drug Target 2014; 23:147-58. [PMID: 25268274 DOI: 10.3109/1061186x.2014.965716] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Liposomes with conjugated p-aminophenyl-α-d-manno-pyranoside (APMP) and apolipoprotein E (ApoE) (APMP-ApoE-liposomes) were employed to carry neuron growth factor (NGF) across the blood-brain barrier (BBB) and enhance the survival of degenerated neurons. APMP-ApoE-liposomes were used to deliver NGF across a monolayer of human brain-microvascular endothelial cells (HBMECs) regulated by human astrocytes (HAs) for rescuing SK-N-MC cells from an insult of β-amyloid peptide 1-42 (Aβ1-42). An increase in the APMP concentration enhanced the particle size, HBMEC and HA viability, permeability for propidium iodide (PI), and permeability for NGF, however, reduced the absolute value of zeta potential, APMP conjugation efficiency and transendothelial electrical resistance (TEER). In addition, an increase in the ApoE concentration increased the particle size, absolute value of zeta potential, HBMEC and HA viability, permeability for PI, permeability for NGF and SK-N-MC cell viability, however, decreased the ApoE conjugation efficiency and TEER. APMP and ApoE on liposomes can be promising surface moieties to carry NGF across the BBB, target degenerated neurons and inhibit Aβ1-42-induced neurotoxicity in Alzheimer's disease.
Collapse
Affiliation(s)
- Yung-Chih Kuo
- Department of Chemical Engineering, National Chung Cheng University , Chia-Yi, Taiwan , Republic of China
| | | |
Collapse
|
9
|
Kuo YC, Wang LJ. Transferrin-grafted catanionic solid lipid nanoparticles for targeting delivery of saquinavir to the brain. J Taiwan Inst Chem Eng 2014. [DOI: 10.1016/j.jtice.2013.09.024] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
10
|
Kumar L, Verma S, Prasad DN, Bhardwaj A, Vaidya B, Jain AK. Nanotechnology: a magic bullet for HIV AIDS treatment. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2014; 43:71-86. [PMID: 24564348 DOI: 10.3109/21691401.2014.883400] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Human immunodeficiency virus (HIV) infection has become devastating in last a few years. Nearly 7400 new infection cases are coming every day. Highly active antiretroviral therapy (HAART), which involves combination of at least three antiretroviral (ARV) drugs, has been used to extend the life span of the HIV-infected patients. HAART has played an important role to reduce mortality rate in the developed countries but in the developing countries condition is still worst with millions of people being infected by this disease. For the improvement of the situation, nanotechnology-based drug system has been explored for the HIV therapeutics. Nanosystems used for HIV therapeutics offer some unique advantage like enhancement of bioavailability, water solubility, stability, and targeting ability of ARV drugs. Main nanotechnology-based systems explored for HIV therapeutics are liposomes, nanoparticles, niosomes, polymeric micelles, and dendrimers. Present manuscript reviews conventional method of HIV therapeutics and recent advances in the field of nanotechnology-based systems for treatment of HIV-AIDS.
Collapse
Affiliation(s)
- Lalit Kumar
- Department of Pharmaceutics, Shivalik College of Pharmacy , Punjab , India
| | | | | | | | | | | |
Collapse
|
11
|
Chen YC, Chiang CF, Chen LF, Liang PC, Hsieh WY, Lin WL. Polymersomes conjugated with des-octanoyl ghrelin and folate as a BBB-penetrating cancer cell-targeting delivery system. Biomaterials 2014; 35:4066-81. [PMID: 24513319 DOI: 10.1016/j.biomaterials.2014.01.042] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2013] [Accepted: 01/17/2014] [Indexed: 12/11/2022]
Abstract
Chemotherapy for brain cancer tumors remains a big challenge for clinical medicine due to the inability to transport sufficient drug across the blood-brain barrier (BBB) and the poor penetration of drug into the tumors. To effectively treat brain tumors and reduce side effects on normal tissues, both des-octanoyl ghrelin and folate conjugated with polymersomal doxorubicin (GFP-D) was developed in this study to help transport across the BBB and target the tumor as well. The size measurements revealed that this BBB-penetrating cancer cell-targeting GFP-D was about 85 nm. In-vitro experiments with a BBB model and C6 glioma cells demonstrated that GFP-D owned a robust penetrating-targeting function for drug delivery. In C6 cell viability tests, GFP-D exhibited an inhibitory effect significantly different from the unmodified polymersomal doxorubicin (P-D). In-vivo antitumor experiments showed that GFP-D performed a much better anti-glioma effect and presented a significant improvement in the overall survival of the tumor-bearing mice as compared to the treatments with free doxorubicin (Dox), liposomal doxorubicin (L-D), P-D, or single ligand conjugated P-D. In addition, Cy 5.5 was used as a probe to investigate the delivery property of this penetrating-targeting delivery system. The overall experimental results indicate that this BBB-penetrating cancer cell-targeting GFP is a highly potential nanocarrier for the treatment of brain tumors.
Collapse
Affiliation(s)
- Yung-Chu Chen
- Institute of Biomedical Engineering, College of Medicine and College of Engineering, National Taiwan University, Taipei, Taiwan; Biomedical Technology and Device Research Labs, Industrial Technology Research Institute, Hsinchu, Taiwan
| | - Chi-Feng Chiang
- Institute of Biomedical Engineering, College of Medicine and College of Engineering, National Taiwan University, Taipei, Taiwan
| | - Li-Fang Chen
- Divison of Neurosurgery, Department of Surgery, National Taiwan University Hospital, Taipei, Taiwan
| | - Po-Chin Liang
- Institute of Biomedical Engineering, College of Medicine and College of Engineering, National Taiwan University, Taipei, Taiwan; Department of Medical Imaging, National Taiwan University Hospital, Taipei, Taiwan
| | - Wen-Yuan Hsieh
- Biomedical Technology and Device Research Labs, Industrial Technology Research Institute, Hsinchu, Taiwan.
| | - Win-Li Lin
- Institute of Biomedical Engineering, College of Medicine and College of Engineering, National Taiwan University, Taipei, Taiwan; Division of Medical Engineering Research, National Health Research Institutes, Miaoli, Taiwan.
| |
Collapse
|
12
|
Chen YC, Chiang CF, Chen LF, Liao SC, Hsieh WY, Lin WL. Polymersomes conjugated with des-octanoyl ghrelin for the delivery of therapeutic and imaging agents into brain tissues. Biomaterials 2014; 35:2051-65. [DOI: 10.1016/j.biomaterials.2013.11.051] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2013] [Accepted: 11/17/2013] [Indexed: 12/28/2022]
|
13
|
Kuo YC, Wang CC. Cationic solid lipid nanoparticles with cholesterol-mediated surface layer for transporting saquinavir to the brain. Biotechnol Prog 2013; 30:198-206. [PMID: 24167123 DOI: 10.1002/btpr.1834] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2013] [Revised: 10/23/2013] [Indexed: 11/08/2022]
Abstract
Cholesterol-mediated cationic solid lipid nanoparticles (CSLNs) were formulated with esterquat 1 (EQ 1) and stearylamine as positively charged external layers on hydrophobic internal cores of cacao butter. These CSLNs were employed to deliver saquinavir (SQV) to the brain. The permeability of SQV across the blood-brain barrier (BBB) using SQV-loaded CSLNs (SQV-CSLNs) was estimated with an in vitro model of a monolayer of human brain-microvascular endothelial cells (HBMECs) regulated by human astrocytes. The results revealed that the average diameter of SQV-CSLNs diminished when the weight percentage of cholesterol and EQ 1 increased. The morphological images indicated a uniform size of SQV-CSLNs with compact lipid structure. In addition, an increasing weight percentage of cholesterol and EQ 1 enhanced the zeta potential of SQV-CSLNs. The fluorescent staining demonstrated that HBMECs could internalize SQV-CSLNs. An increase in the weight percentage of cholesterol and EQ 1 also promoted the uptake of SQV-CSLNs by HBMECs. Moreover, a high content of cholesterol and EQ 1 in SQV-CSLNs increased the BBB permeability of SQV. The cholesterol-mediated SQV-CSLNs can be an efficacious drug delivery system for brain-targeting delivery of antiviral agents.
Collapse
Affiliation(s)
- Yung-Chih Kuo
- Dept. of Chemical Engineering, National Chung Cheng University, Chia-Yi, Taiwan, 62102, Republic of China
| | | |
Collapse
|
14
|
Drug synergy of tenofovir and nanoparticle-based antiretrovirals for HIV prophylaxis. PLoS One 2013; 8:e61416. [PMID: 23630586 PMCID: PMC3632578 DOI: 10.1371/journal.pone.0061416] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2013] [Accepted: 03/12/2013] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND The use of drug combinations has revolutionized the treatment of HIV but there is no equivalent combination product that exists for prevention, particularly for topical HIV prevention. Strategies to combine chemically incompatible agents may facilitate the discovery of unique drug-drug activities, particularly unexplored combination drug synergy. We fabricated two types of nanoparticles, each loaded with a single antiretroviral (ARV) that acts on a specific step of the viral replication cycle. Here we show unique combination drug activities mediated by our polymeric delivery systems when combined with free tenofovir (TFV). METHODOLOGY/PRINCIPAL FINDINGS Biodegradable poly(lactide-co-glycolide) nanoparticles loaded with efavirenz (NP-EFV) or saquinavir (NP-SQV) were individually prepared by emulsion or nanoprecipitation techniques. Nanoparticles had reproducible size (d ∼200 nm) and zeta potential (-25 mV). The drug loading of the nanoparticles was approximately 7% (w/w). NP-EFV and NP-SQV were nontoxic to TZM-bl cells and ectocervical explants. Both NP-EFV and NP-SQV exhibited potent protection against HIV-1 BaL infection in vitro. The HIV inhibitory effect of nanoparticle formulated ARVs showed up to a 50-fold reduction in the 50% inhibitory concentration (IC50) compared to free drug. To quantify the activity arising from delivery of drug combinations, we calculated combination indices (CI) according to the median-effect principle. NP-EFV combined with free TFV demonstrated strong synergistic effects (CI50 = 0.07) at a 1∶50 ratio of IC50 values and additive effects (CI50 = 1.05) at a 1∶1 ratio of IC50 values. TFV combined with NP-SQV at a 1∶1 ratio of IC50 values also showed strong synergy (CI50 = 0.07). CONCLUSIONS ARVs with different physicochemical properties can be encapsulated individually into nanoparticles to potently inhibit HIV. Our findings demonstrate for the first time that combining TFV with either NP-EFV or NP-SQV results in pronounced combination drug effects, and emphasize the potential of nanoparticles for the realization of unique drug-drug activities.
Collapse
|
15
|
Kuo YC, Chung CY. Transcytosis of CRM197-grafted polybutylcyanoacrylate nanoparticles for delivering zidovudine across human brain-microvascular endothelial cells. Colloids Surf B Biointerfaces 2012; 91:242-9. [DOI: 10.1016/j.colsurfb.2011.11.007] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2011] [Revised: 11/03/2011] [Accepted: 11/04/2011] [Indexed: 10/15/2022]
|
16
|
Kuo YC, Lu CH. Expression of P-glycoprotein and multidrug resistance-associated protein on human brain-microvascular endothelial cells with electromagnetic stimulation. Colloids Surf B Biointerfaces 2012; 91:57-62. [DOI: 10.1016/j.colsurfb.2011.10.035] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2011] [Revised: 10/19/2011] [Accepted: 10/19/2011] [Indexed: 11/15/2022]
|
17
|
Kuo YC, Lu CH. Modulation of efflux proteins by electromagnetic field for delivering azidothymidine and saquinavir into the brain. Colloids Surf B Biointerfaces 2012; 91:291-5. [DOI: 10.1016/j.colsurfb.2011.11.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2011] [Revised: 11/09/2011] [Accepted: 11/11/2011] [Indexed: 11/29/2022]
|
18
|
Kuo YC, Lee CL. Methylmethacrylate-sulfopropylmethacrylate nanoparticles with surface RMP-7 for targeting delivery of antiretroviral drugs across the blood-brain barrier. Colloids Surf B Biointerfaces 2011; 90:75-82. [PMID: 22024400 DOI: 10.1016/j.colsurfb.2011.09.048] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2011] [Accepted: 09/29/2011] [Indexed: 10/16/2022]
Abstract
This study investigates the capability of methylmethacrylate-sulfopropylmethacrylate (MMA-SPM) nanoparticles (NPs) with grafted RMP-7 (RMP-7/MMA-SPM NPs) to deliver stavudine (D4T), delavirdine (DLV), and saquinavir (SQV) across the blood-brain barrier (BBB). The permeability coefficients of the three drugs across the BBB were evaluated by a co-culture model containing human brain-microvascular endothelial cells and human astrocytes. An increase in the concentration of ammonium persulfate (APS), the polymerization initiator, enhanced the particle size of drug-loaded RMP-7/MMA-SPM NPs. When the concentration of APS was 0.6%, the average particle diameter was smaller than 50 nm. These spherical drug carriers were uniform in size and displayed a dominant topography of discrete hillocks and deep pits in deposited film. Smaller RMP-7/MMA-SPM NPs yielded a larger drug loading efficiency. The order of drug in the loading efficiency and in the particle uptake was, respectively, D4T>DLV>SQV and D4T>SQV>DLV. Endocytosis of RMP-7/MMA-SPM NPs and tight junction mediation can improve the permeability of D4T, DLV, and SQV across the BBB.
Collapse
Affiliation(s)
- Yung-Chih Kuo
- Department of Chemical Engineering, National Chung Cheng University, Chia-Yi, Taiwan, ROC.
| | | |
Collapse
|