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Marquez CA, Oh CI, Ahn G, Shin WR, Kim YH, Ahn JY. Synergistic vesicle-vector systems for targeted delivery. J Nanobiotechnology 2024; 22:6. [PMID: 38167116 PMCID: PMC10763086 DOI: 10.1186/s12951-023-02275-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Accepted: 12/14/2023] [Indexed: 01/05/2024] Open
Abstract
With the immense progress in drug delivery systems (DDS) and the rise of nanotechnology, challenges such as target specificity remain. The vesicle-vector system (VVS) is a delivery system that uses lipid-based vesicles as vectors for a targeted drug delivery. When modified with target-probing materials, these vesicles become powerful vectors for drug delivery with high target specificity. In this review, we discuss three general types of VVS based on different modification strategies: (1) vesicle-probes; (2) vesicle-vesicles; and (3) genetically engineered vesicles. The synthesis of each VVS type and their corresponding properties that are advantageous for targeted drug delivery, are also highlighted. The applications, challenges, and limitations of VVS are briefly examined. Finally, we share a number of insights and perspectives regarding the future of VVS as a targeted drug delivery system at the nanoscale.
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Affiliation(s)
- Christine Ardelle Marquez
- Department of Microbiology, Chungbuk National University, 1 Chungdae-Ro, Seowon-Gu, Cheongju, 28644, Republic of Korea
| | - Cho-Im Oh
- Department of Microbiology, Chungbuk National University, 1 Chungdae-Ro, Seowon-Gu, Cheongju, 28644, Republic of Korea
| | - Gna Ahn
- Department of Microbiology, Chungbuk National University, 1 Chungdae-Ro, Seowon-Gu, Cheongju, 28644, Republic of Korea
- Center for Ecology and Environmental Toxicology, Chungbuk National University, Cheongju, 28644, Republic of Korea
| | - Woo-Ri Shin
- Department of Microbiology, Chungbuk National University, 1 Chungdae-Ro, Seowon-Gu, Cheongju, 28644, Republic of Korea
- Department of Bioengineering, University of Pennsylvania, 210 S 33rd St, Philadelphia, PA, 19104, USA
| | - Yang-Hoon Kim
- Department of Microbiology, Chungbuk National University, 1 Chungdae-Ro, Seowon-Gu, Cheongju, 28644, Republic of Korea.
- Center for Ecology and Environmental Toxicology, Chungbuk National University, Cheongju, 28644, Republic of Korea.
| | - Ji-Young Ahn
- Department of Microbiology, Chungbuk National University, 1 Chungdae-Ro, Seowon-Gu, Cheongju, 28644, Republic of Korea.
- Center for Ecology and Environmental Toxicology, Chungbuk National University, Cheongju, 28644, Republic of Korea.
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2
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Hagimori M, Kato N, Orimoto A, Suga T, Kawakami S. Development of Triple-Negative Breast Cancer-Targeted Liposomes with MUC16 Binding Peptide Ligand in Triple-Negative Breast Cancer Cells. J Pharm Sci 2023; 112:1740-1745. [PMID: 36878391 DOI: 10.1016/j.xphs.2023.02.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 02/27/2023] [Accepted: 02/27/2023] [Indexed: 03/07/2023]
Abstract
Triple-negative breast cancer (TNBC) is a highly malignant tumor that does not express the estrogen receptor (ER), progesterone receptor (PR), or human epidermal growth factor receptor 2 (HER-2). As molecular approaches to these targets have limited clinical utility in TNBC, novel strategies for the treatment of TNBC are urgently needed. MUC16 (Mucin-16) is a glycoprotein involved in cell proliferation and apoptosis and is overexpressed in breast cancer. To develop a clinically available strategy for TNBC treatment, we synthesized a MUC16 targeted peptide (EVQ)-grafted lipid derivative, EVQ-(SG)5-lipid, and prepared EVQ-(SG)5/PEGylated liposomes of 100 nm by size and a slightly negative ζ-potential value. Thus, we aimed at investigating the association between EVQ-(SG)5/PEGylated and TNBC cell lines by interacting with MUC16 using an in vitro model. In addition, we aimed at exploring the intracellular distribution and cellular uptake pathway of EVQ-(SG)5/PEGylated liposomes as novel drug delivery carriers for TNBC.
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Affiliation(s)
- Masayori Hagimori
- Faculty of Pharmaceutical Sciences, Mukogawa Women's University, 11-68 Koshien Kyubancho, Nishinomiya, 663-8179, Japan.
| | - Naoya Kato
- Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8588, Japan
| | - Akira Orimoto
- Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8588, Japan
| | - Tadaharu Suga
- Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8588, Japan
| | - Shigeru Kawakami
- Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8588, Japan
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Geng L, Kato N, Kodama Y, Mukai H, Kawakami S. Influence of lipid composition of messenger RNA-loaded lipid nanoparticles on the protein expression via intratracheal administration in mice. Int J Pharm 2023; 637:122896. [PMID: 36972778 DOI: 10.1016/j.ijpharm.2023.122896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 03/10/2023] [Accepted: 03/24/2023] [Indexed: 03/28/2023]
Abstract
Intratracheal (i.t.) administration, which takes advantage of the specific structure of the respiratory system, can effectively deliver nanoparticles to the lung. Much remains unknown about the i.t. administration of messenger RNA (mRNA)-lipid nanoparticles (LNPs) and the effect of lipid composition. In this study, we administered minute amounts of mRNA-LNP solutions into mice intratracheally and investigated the effect of lipid composition on protein expression in the lungs. We first validated higher protein expression with mRNA-LNP compared to that with mRNA-PEI complex and naked mRNA. Then, we evaluated the influence of lipid composition of LNPs on the protein expression and found that: 1) decreasing the PEG molarity from 1.5% to 0.5% could significantly increase the protein expression; 2) replacing DMG-PEG with DSG-PEG could slightly increase the protein expression; 3) using DOPE instead of DSPC could increase protein expression by an order of magnitude. We successfully prepared an mRNA-LNP with optimal lipid compositions that led to robust protein expression following i.t. administration, thus providing meaningful insights into advanced development of mRNA-LNPs for therapeutic i.t. administration.
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Affiliation(s)
- Longjian Geng
- Department of Pharmaceutical Informatics, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki-shi, Nagasaki 852-8588, Japan.
| | - Naoya Kato
- Department of Pharmaceutical Informatics, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki-shi, Nagasaki 852-8588, Japan.
| | - Yukinobu Kodama
- Department of Hospital Pharmacy, Nagasaki University Hospital, 1-7-1 Sakamoto, Nagasaki-shi, Nagasaki 852-8501, Japan.
| | - Hidefumi Mukai
- Department of Pharmaceutical Informatics, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki-shi, Nagasaki 852-8588, Japan; Laboratory for Molecular Delivery and Imaging Technology, RIKEN Center for Biosystems Dynamics Research, 6-7-3 Minatojima-Minamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan.
| | - Shigeru Kawakami
- Department of Pharmaceutical Informatics, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki-shi, Nagasaki 852-8588, Japan.
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Sugimoto Y, Suga T, Kato N, Umino M, Yamayoshi A, Mukai H, Kawakami S. Microfluidic Post-Insertion Method for the Efficient Preparation of PEGylated Liposomes Using High Functionality and Quality Lipids. Int J Nanomedicine 2022; 17:6675-6686. [PMID: 36597433 PMCID: PMC9805735 DOI: 10.2147/ijn.s390866] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 12/21/2022] [Indexed: 12/29/2022] Open
Abstract
Introduction Targeted liposomes using ligand peptides have been applied to deliver therapeutic agents to the target sites. The post-insertion method is commonly used because targeted liposomes can be prepared by simple mixing of ligand peptide-lipid and liposomes. A large-scale preparation method is required for the clinical application of ligand-peptide-modified liposomes. Large-scale preparation involves an increase in volume and a change in the preparation conditions. Therefore, the physicochemical properties of liposomes may change owing to large alterations in the preparation conditions. To address this issue, we focused on a microfluidic device and developed a novel ligand peptide modification method, the microfluidic post-insertion method. Methods We used integrin αvβ3-targeted GRGDS (RGD) and cyclic RGDfK (cRGD)-modified high functionality and quality (HFQ) lipids, which we had previously developed. First, the preparation conditions of the total flow rate in the microfluidic device for modifying HFQ lipids to polyethylene glycol (PEG)-modified (PEGylated) liposomes were optimized by evaluating the physicochemical properties of the liposomes. The targeting ability of integrin αvβ3-expressing colon 26 murine colorectal carcinoma cells was evaluated by comparing the cellular association properties of the liposomes prepared by the conventional post-insertion method. Results When the RGD-HFQ lipid was modified into PEGylated liposomes by varying the total flow rate (1, 6, and 12 mL/min) of the microfluidic device, as the total flow rate increased, the polydispersity index also increased, whereas the particle size did not change. Furthermore, the RGD- and cRGD-modified PEGylated liposomes prepared at a total flow rate of 1 mL/min showed high cellular association properties equivalent to those prepared by the conventional post-insertion method. Conclusion Microfluidic post-insertion method of HFQ lipids might be useful for clinical application and large-scale preparation of targeted liposomes.
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Affiliation(s)
- Yuri Sugimoto
- Department of Pharmaceutical Informatics, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan,Department of Chemistry of Functional Molecules, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Tadaharu Suga
- Department of Pharmaceutical Informatics, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Naoya Kato
- Department of Pharmaceutical Informatics, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Mizuki Umino
- Department of Pharmaceutical Informatics, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Asako Yamayoshi
- Department of Chemistry of Functional Molecules, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Hidefumi Mukai
- Department of Pharmaceutical Informatics, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan,Laboratory for Molecular Delivery and Imaging Technology, RIKEN Center for Biosystems Dynamics Research, Kobe, Japan
| | - Shigeru Kawakami
- Department of Pharmaceutical Informatics, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan,Correspondence: Shigeru Kawakami, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki-shi, Nagasaki, 852-8588, Japan, Tel/Fax +81 95 819 8563, Email
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Synthesis and evaluation of a novel adapter lipid derivative for preparation of cyclic peptide-modified PEGylated liposomes: Application of cyclic RGD peptide. Eur J Pharm Sci 2022; 176:106239. [PMID: 35714942 DOI: 10.1016/j.ejps.2022.106239] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 05/15/2022] [Accepted: 06/14/2022] [Indexed: 11/20/2022]
Abstract
Peptide ligand modified nanoparticles can simply prepared by post-insertion method to mix pre-formed nanoparticles with peptide-lipid conjugates in an aqueous solution at an optimal temperature. Therefore, water dispersibility of peptide-lipid conjugates is a very important factor for implementing the post-insertion method. We proposed that highly water dispersible peptide-lipid conjugates can be easily synthesized by separately designing novel adapter lipids with different water dispersibility and reacting them with ligands in a highly efficient manner. Adapter lipids have three critical roles; as spacers of ligand-conjugated lipids for efficient ligand presentation, as structures that form discrete molecular weight distributions, and as providing water dispersibility. In this study, we developed a novel adapter-lipid derivative that enables a variety of cyclic peptide modifications using the click reaction. The integrin αvβ3-targeted cyclic RGDfK (cRGD) peptide was selected as the cyclic peptide ligand. We designed a novel alkyne-tagged lipid with a discrete peptide spacer and bound the cRGD peptide using a click reaction to synthesize a cRGD-conjugated lipid with good water dispersibility for the preparation of cRGD-modified PEGylated liposomes using the post-insertion method. We also revealed that cRGD-modified PEGylated liposomes are efficiently associated with integrin αvβ3-expressing murine colon carcinoma (Colon-26) cells in a modification amount- and peptide sequence-dependent manner, showing high cytotoxicity upon loading with doxorubicin. This novel adapter lipid derivative can be used to synthesize various cyclic peptides by click reactions and will provide useful insights for the future development of cyclic peptide-modified PEGylated liposomes.
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Synthesis and Evaluation of High Functionality and Quality Cell-penetrating Peptide Conjugated Lipid for Octaarginine Modified PEGylated Liposomes In U251 and U87 Glioma Cells. J Pharm Sci 2021; 111:1719-1727. [PMID: 34863974 DOI: 10.1016/j.xphs.2021.11.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Revised: 11/27/2021] [Accepted: 11/28/2021] [Indexed: 11/20/2022]
Abstract
The use of peptide ligand modified PEGylated liposomes has been widely investigated for tumor targeting. Peptides are mainly inserted in the liposomal lipid bilayer using PEG2K-lipid spacer (Peptide-PEG2K-DSPE). However, a lower cellular uptake from longer nonlinear PEG2K spacer was reported, we here synthesized a high functionality and quality (HFQ) lipid with a short, linear serine-glycine repeated peptide [(SG)5] spacer. The objective of the current study is to develop novel octaarginine (R8) peptide-HFQ lipid grafted PEGylated liposomes for glioma cells targeting. In vitro liposomes characterization showed that the mean particle size of all liposomal formulations was in the nano-scale range < 120 nm, with a small PDI value (i.e. ∼0.2) and had a spherical shape under Transmission Electron Microscope, indicating a homogenous particle size distribution. The flow cytometry in vitro cellular association data with U251 MG and U87 cells revealed that 1.5% R8-(SG)5-lipid-PEGylated liposomes exhibited significantly higher cellular association of ∼15.87 and 7.59-fold than the conventional R8-PEG2K-lipid-PEGylated liposomes (10.4 and 6.19-fold), respectively, relative to the unmodified PEGylated liposomes. Moreover, intracellular distribution studies using confocal laser scanning microscopy (CLSM) corroborated the results of the in vitro cell association. The use of ligand-HFQ-lipid liposomes could be a potential alternative to ligand-PEG2K-lipid-modified liposomes as a drug delivery system for tumor targeting.
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Wang Y, Sheng J, Chai J, Zhu C, Li X, Yang W, Cui R, Ge T. Filamentous Bacteriophage-A Powerful Carrier for Glioma Therapy. Front Immunol 2021; 12:729336. [PMID: 34566987 PMCID: PMC8462735 DOI: 10.3389/fimmu.2021.729336] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Accepted: 08/18/2021] [Indexed: 12/12/2022] Open
Abstract
Glioma is a life-threatening malignant tumor. Resistance to traditional treatments and tumor recurrence present major challenges in treating and managing this disease, consequently, new therapeutic strategies must be developed. Crossing the blood-brain barrier (BBB) is another challenge for most drug vectors and therapy medications. Filamentous bacteriophage can enter the brain across the BBB. Compared to traditional drug vectors, phage-based drugs offer thermodynamic stability, biocompatibility, homogeneity, high carrying capacity, self-assembly, scalability, and low toxicity. Tumor-targeting peptides from phage library and phages displaying targeting peptides are ideal drug delivery agents. This review summarized recent studies on phage-based glioma therapy and shed light on the developing therapeutics phage in the personalized treatment of glioma.
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Affiliation(s)
| | | | | | | | | | | | | | - Tongtong Ge
- Jilin Provincial Key Laboratory on Molecular and Chemical Genetic, The Second Hospital of Jilin University, Changchun, China
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Aronson MR, Medina SH, Mitchell MJ. Peptide functionalized liposomes for receptor targeted cancer therapy. APL Bioeng 2021; 5:011501. [PMID: 33532673 PMCID: PMC7837755 DOI: 10.1063/5.0029860] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Accepted: 12/28/2020] [Indexed: 02/07/2023] Open
Abstract
Most clinically approved cancer therapies are potent and toxic small molecules that are limited by severe off-target toxicities and poor tumor-specific localization. Over the past few decades, attempts have been made to load chemotherapies into liposomes, which act to deliver the therapeutic agent directly to the tumor. Although liposomal encapsulation has been shown to decrease toxicity in human patients, reliance on passive targeting via the enhanced permeability and retention (EPR) effect has left some of these issues unresolved. Recently, investigations into modifying the surface of liposomes via covalent and/or electrostatic functionalization have offered mechanisms for tumor homing and subsequently controlled chemotherapeutic delivery. A wide variety of biomolecules can be utilized to functionalize liposomes such as proteins, carbohydrates, and nucleic acids, which enable multiple directions for cancer cell localization. Importantly, when nanoparticles are modified with such molecules, care must be taken as not to inactivate or denature the ligand. Peptides, which are small proteins with <30 amino acids, have demonstrated the exceptional ability to act as ligands for transmembrane protein receptors overexpressed in many tumor phenotypes. Exploring this strategy offers a method in tumor targeting for cancers such as glioblastoma multiforme, pancreatic, lung, and breast based on the manifold of receptors overexpressed on various tumor cell populations. In this review, we offer a comprehensive summary of peptide-functionalized liposomes for receptor-targeted cancer therapy.
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Hagimori M, Mendoza-Ortega EE, Krafft MP. Synthesis and physicochemical evaluation of fluorinated lipopeptide precursors of ligands for microbubble targeting. Beilstein J Org Chem 2021; 17:511-518. [PMID: 33727974 PMCID: PMC7934786 DOI: 10.3762/bjoc.17.45] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Accepted: 01/18/2021] [Indexed: 12/11/2022] Open
Abstract
Ligand-targeted microbubbles are focusing interest for molecular imaging and delivery of chemotherapeutics. Lipid-peptide conjugates (lipopeptides) that feature alternating serine-glycine (SG) n segments rather than classical poly(oxyethylene) linkers between the lipid polar head and a targeting ligand were proposed for the liposome-mediated, selective delivery of anticancer drugs. Here, we report the synthesis of perfluoroalkylated lipopeptides (F-lipopeptides) bearing two hydrophobic chains (C n F2 n +1, n = 6, 7, 8, 1-3) grafted through a lysine moiety on a hydrophilic chain composed of a lysine-serine-serine (KSS) sequence followed by 5 SG sequences. These F-lipopeptides are precursors of targeting lipopeptide conjugates. A hydrocarbon counterpart with a C10H21 chain (4) was synthesized for comparison. The capacity for the F-lipopeptides to spontaneously adsorb at the air/water interface and form monolayers when combined with dipalmitoylphosphatidylcholine (DPPC) was investigated. The F-lipopeptides 1-3 demonstrated a markedly enhanced tendency to form monolayers at the air/water interface, with equilibrium surface pressures reaching ≈7-10 mN m-1 versus less than 1 mN m-1 only for their hydrocarbon analog 4. The F-lipopeptides penetrate in the DPPC monolayers in both liquid expanded (LE) and liquid condensed (LC) phases without interfacial film destabilization. By contrast, 4 provokes delipidation of the interfacial film. The incorporation of the F-lipopeptides 1-3 in microbubbles with a shell of DPPC and dipalmitoylphosphatidylethanolamine-PEG2000 decreased their mean diameter and increased their stability, the best results being obtained for the C8F17-bearing lipopeptide 3. By contrast, the hydrocarbon lipopeptide led to microbubbles with a larger mean diameter and a significantly lower stability.
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Affiliation(s)
- Masayori Hagimori
- Institut Charles Sadron (CNRS), University of Strasbourg, 23 rue du Loess, 67034 Strasbourg CEDEX 2, France
- Faculty of Pharmaceutical Sciences, Mukogawa Women’s University, 11-68 Koshien Kyubancho, Nishinomiya 663-8179, Japan
- Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan
| | - Estefanía E Mendoza-Ortega
- Institut Charles Sadron (CNRS), University of Strasbourg, 23 rue du Loess, 67034 Strasbourg CEDEX 2, France
| | - Marie Pierre Krafft
- Institut Charles Sadron (CNRS), University of Strasbourg, 23 rue du Loess, 67034 Strasbourg CEDEX 2, France
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Ogawa K, Kato N, Kawakami S. Recent Strategies for Targeted Brain Drug Delivery. Chem Pharm Bull (Tokyo) 2021; 68:567-582. [PMID: 32611994 DOI: 10.1248/cpb.c20-00041] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Because the brain is the most important human organ, many brain disorders can cause severe symptoms. For example, glioma, one type of brain tumor, is progressive and lethal, while neurodegenerative diseases cause severe disability. Nevertheless, medical treatment for brain diseases remains unsatisfactory, and therefore innovative therapies are desired. However, the development of therapies to treat some cerebral diseases is difficult because the blood-brain barrier (BBB) or blood-brain tumor barrier prevents drugs from entering the brain. Hence, drug delivery system (DDS) strategies are required to deliver therapeutic agents to the brain. Recently, brain-targeted DDS have been developed, which increases the quality of therapy for cerebral disorders. This review gives an overview of recent brain-targeting DDS strategies. First, it describes strategies to cross the BBB. This includes BBB-crossing ligand modification or temporal BBB permeabilization. Strategies to avoid the BBB using local administration are also summarized. Intrabrain drug distribution is a crucial factor that directly determines the therapeutic effect, and thus it is important to evaluate drug distribution using optimal methods. We introduce some methods for evaluating drug distribution in the brain. Finally, applications of brain-targeted DDS for the treatment of brain tumors, Alzheimer's disease, Parkinson's disease, and stroke are explained.
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Affiliation(s)
- Koki Ogawa
- Department of Pharmaceutical Informatics, Graduate School of Biomedical Sciences, Nagasaki University
| | - Naoya Kato
- Department of Pharmaceutical Informatics, Graduate School of Biomedical Sciences, Nagasaki University
| | - Shigeru Kawakami
- Department of Pharmaceutical Informatics, Graduate School of Biomedical Sciences, Nagasaki University
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Kawakami S, Suga T. [Development of Nano-DDS Carriers for Control of Spatial Distribution Using Multi-color Deep Imaging]. YAKUGAKU ZASSHI 2020; 140:633-640. [PMID: 32378663 DOI: 10.1248/yakushi.19-00218-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Because active-targeted liposomes are very complex formulations, quality characteristics of functional lipids have not been defined yet, and this is a major obstacle in clinical application of active targeted liposomes. We have developed high functionality and quality (HFQ) lipids, which define quality characteristics of functional lipids for clinical drug delivery system (DDS) applications. Because HFQ lipids are designed to enable facile and rapid functionalization of DDS carrier by simple and one-step mixing, we are expanding applications for not only liposomes but also exosomes and cells. Recently, we developed multi-color deep imaging by tissue clearing for analysis of spatial distribution of DDS in various tissues. Nanocarriers are usually non-uniformly distributed in solid tumors because of their heterogeneity. Especially, in refractory cancer such as pancreatic cancer, the presence of collagen and blood vessels greatly affects intra-tumor distribution of DDS carrier. Therefore information on spatial relations between the tissue structure and DDS carrier is important to regulate precisely intra-tumor distribution of DDS carrier. Recently, our group has established multi-color deep imaging to analyze spatial distribution of stromal collagen, liposomes, and blood vessels in pancreatic tumor tissue. In this review, we present recent research in developing HFQ lipids. Moreover, current status of research on DDS for pancreatic cancer treatment is reviewed.
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Affiliation(s)
- Shigeru Kawakami
- Department of Pharmaceutical Informatics, Graduate School of Biomedical Sciences, Nagasaki University
| | - Tadaharu Suga
- Department of Pharmaceutical Informatics, Graduate School of Biomedical Sciences, Nagasaki University
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