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Roussel S, Udabe J, Bin Sabri A, Calderón M, Donnelly R. Leveraging novel innovative thermoresponsive polymers in microneedles for targeted intradermal deposition. Int J Pharm 2024; 652:123847. [PMID: 38266945 DOI: 10.1016/j.ijpharm.2024.123847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 01/19/2024] [Accepted: 01/21/2024] [Indexed: 01/26/2024]
Abstract
Microneedles have garnered considerable attention over the years as a versatile pharmaceutical platform that could be leveraged to deliver drugs into and across the skin. In the current work, poly (N-isopropylacrylamide) (PNIPAm) is synthesized and characterized as a novel material for the development of a physiologically responsive microneedle-based drug delivery system. Typically, this polymer transitions reversibly between a swell state at lower temperatures and a more hydrophobic state at higher temperatures, enabling precise drug release. This study demonstrates that dissolving microneedles patches made from PNIPAm, incorporating BIS-PNIPAm, a crosslinked polymer variant, exhibit enhanced mechanical properties, evident from a smaller height reduction in microneedle (∼10 %). Although microneedles using PNIPAm alone were achievable, it displayed poor mechanical strength, requiring the inclusion of additional polymeric excipients like PVA to enhance mechanical properties. In addition, the incorporation of a thermoresponsive polymer did not have a significant (p > 0.05) impact on the insertion properties of the needles as all formulations inserted to a similar depth of 500 µm into ex vivo skin. Furthering this, the needles were loaded with a model payload, 1,1'-dioctadecyl-3,3,3',3'-tetramethylindodicarbocyanine perchlorate (DID) and the deposition of the cargo was monitored via multiphoton microscopy that showed that a deposit is formed at a depth of ≈200 µm. Also, it was revealed that crosslinked-PNIPAm (Bis-PNIPAm) formulations exhibited notable skin accumulationof the dye only after 4 h, independent of the excipient matrix used. This phenomenon was absent in non-crosslinked PNIPAm formulations, indicating a deposit formation in Bis-PNIPAm microneedle formulation. Collectively, this proof-of-concept study has advanced our understanding on the possibility to use PNIPAm for dissolving microneedle fabrication which could be harnessed for the deposition of nanoparticles into the dermis, for extended drug release within the skin.
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Affiliation(s)
- Sabrina Roussel
- Faculty of Pharmacy, CHU de Quebec Research Center, Université Laval, 2705 Laurier Blvd, Quebec G1V 4G2, Canada; School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK
| | - Jakes Udabe
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK; POLYMAT, Applied Chemistry Department, Faculty of Chemistry, University of the Basque Country UPV/EHU, Donostia - San Sebastián, Spain
| | - Akmal Bin Sabri
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK; Division of Advanced Materials and Healthcare Technologies, School of Pharmacy, The University of Nottingham, NG7 2RD, UK
| | - Marcelo Calderón
- POLYMAT, Applied Chemistry Department, Faculty of Chemistry, University of the Basque Country UPV/EHU, Donostia - San Sebastián, Spain; IKERBASQUE, Basque Foundation for Science, Bilbao, Spain
| | - Ryan Donnelly
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK.
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Rana AA, Yusaf A, Shahid S, Usman M, Ahmad M, Aslam S, Al-Hussain SA, Zaki MEA. Unveiling the Role of Nonionic Surfactants in Enhancing Cefotaxime Drug Solubility: A UV-Visible Spectroscopic Investigation in Single and Mixed Micellar Formulations. Pharmaceuticals (Basel) 2023; 16:1663. [PMID: 38139790 PMCID: PMC10747636 DOI: 10.3390/ph16121663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 11/18/2023] [Accepted: 11/22/2023] [Indexed: 12/24/2023] Open
Abstract
This study reports the interfacial phenomenon of cefotaxime in combination with nonionic surfactants, Triton X-100 (TX-100) and Tween-80 (TW-80), and their mixed micellar formulations. Cefotaxime was enclosed in a micellar system to improve its solubility and effectiveness. TX-100 and TW-80 were used in an amphiphilic self-assembly process to create the micellar formulation. The effect of the addition of TX-100, a nonionic surfactant, on the ability of TW-80 to solubilize the drug was examined. The values of the critical micelle concentration (CMC) were determined via UV-Visible spectroscopy. Gibbs free energies (ΔGp and ΔGb), the partition coefficient (Kx), and the binding constant (Kb) were also computed. In a single micellar system, the partition coefficient (Kx) was found to be 33.78 × 106 and 2.78 × 106 in the presence of TX-100 and TW-80, respectively. In a mixed micellar system, the value of the partition coefficient for the CEF/TW-80 system is maximum (5.48 × 106) in the presence of 0.0019 mM of TX-100, which shows that TX-100 significantly enhances the solubilizing power of micelles. It has been demonstrated that these surfactants are effective in enhancing the solubility and bioavailability of therapeutic compounds. This study elaborates on the physicochemical characteristics and solubilization of reactive drugs in single and mixed micellar media. This investigation, conducted in the presence of surfactants, shows a large contribution to the binding process via both hydrogen bonding and hydrophobic interactions.
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Affiliation(s)
- Aysha Arshad Rana
- Department of Chemistry, Government College Women University, Faisalabad 38000, Pakistan
| | - Amnah Yusaf
- Department of Chemistry, Government College Women University, Faisalabad 38000, Pakistan
| | - Salma Shahid
- Department of Biochemistry, Government College Women University, Faisalabad 38000, Pakistan
| | - Muhammad Usman
- Department of Chemistry, Government College University, Faisalabad 38000, Pakistan
| | - Matloob Ahmad
- Department of Chemistry, Government College University, Faisalabad 38000, Pakistan
| | - Sana Aslam
- Department of Chemistry, Government College Women University, Faisalabad 38000, Pakistan
| | - Sami A. Al-Hussain
- Department of Chemistry, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 11623, Saudi Arabia
| | - Magdi E. A. Zaki
- Department of Chemistry, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 11623, Saudi Arabia
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Liu H, Xu S, Yong T, Wei Z, Bie N, Zhang X, Li X, Li J, Li S, Wang S, Zhao Y, Yang X, Gan L. Hydrophobicity-Adaptive Polymers Trigger Fission of Tumor-Cell-Derived Microparticles for Enhanced Anticancer Drug Delivery. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2211980. [PMID: 37755231 DOI: 10.1002/adma.202211980] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 08/25/2023] [Indexed: 09/28/2023]
Abstract
Tumor-cell-derived microparticles (MPs) can function as anticancer drug-delivery carriers. However, short blood circulation time, large-size-induced insufficient tumor accumulation and penetration into tumor parenchyma, as well as limited cellular internalization by tumor cells and cancer stem cells (CSCs), and difficult intracellular drug release restrict the anticancer activity of tumor-cell-derived MP-based drug-delivery systems. In this work, hydrophobicity-adaptive polymers based on poly(N-isopropylacrylamide) are anchored to tumor-cell-derived MPs for enhanced delivery of the anticancer drug doxorubicin (DOX). The polymers are hydrophilic in blood to prolong the circulation time of DOX-loaded MPs (DOX@MPs), while rapidly switching to hydrophobic at the tumor acidic microenvironment. The hydrophobicity of polymers drives the fission of tumor-cell-derived MPs to form small vesicles, facilitating tumor accumulation, deep tumor penetration, and efficient internalization of DOX@MPs into tumor cells and CSCs. Subsequently, the hydrophobicity of polymers in acidic lysosomes further promotes DOX release to nuclei for strong cytotoxicity against tumor cells and CSCs. The work provides a facile and simple strategy for improved anticancer drug delivery of tumor-cell-derived MPs.
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Affiliation(s)
- Haojie Liu
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Shiyi Xu
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Tuying Yong
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, Huazhong University of Science and Technology, Wuhan, 430074, China
- Hubei Bioinformatics and Molecular Imaging Key Laboratory, Huazhong University of Science and Technology, Wuhan, 430074, China
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Zhaohan Wei
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Nana Bie
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Xiaoqiong Zhang
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Xin Li
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Jianye Li
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Shiyu Li
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Sheng Wang
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Yanbing Zhao
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, Huazhong University of Science and Technology, Wuhan, 430074, China
- Hubei Bioinformatics and Molecular Imaging Key Laboratory, Huazhong University of Science and Technology, Wuhan, 430074, China
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Xiangliang Yang
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, Huazhong University of Science and Technology, Wuhan, 430074, China
- Hubei Bioinformatics and Molecular Imaging Key Laboratory, Huazhong University of Science and Technology, Wuhan, 430074, China
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Lu Gan
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, Huazhong University of Science and Technology, Wuhan, 430074, China
- Hubei Bioinformatics and Molecular Imaging Key Laboratory, Huazhong University of Science and Technology, Wuhan, 430074, China
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Huazhong University of Science and Technology, Wuhan, 430074, China
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Nandi R, Amdursky N. The Dual Use of the Pyranine (HPTS) Fluorescent Probe: A Ground-State pH Indicator and an Excited-State Proton Transfer Probe. Acc Chem Res 2022; 55:2728-2739. [PMID: 36053265 PMCID: PMC9494743 DOI: 10.1021/acs.accounts.2c00458] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Indexed: 01/19/2023]
Abstract
Molecular fluorescent probes are an essential experimental tool in many fields, ranging from biology to chemistry and materials science, to study the localization and other environmental properties surrounding the fluorescent probe. Thousands of different molecular fluorescent probes can be grouped into different families according to their photophysical properties. This Account focuses on a unique class of fluorescent probes that distinguishes itself from all other probes. This class is termed photoacids, which are molecules exhibiting a change in their acid-base transition between the ground and excited states, resulting in a large change in their pKa values between these two states, which is thermodynamically described using the Förster cycle. While there are many different photoacids, we focus only on pyranine, which is the most used photoacid, with pKa values of ∼7.4 and ∼0.4 for its ground and excited states, respectively. Such a difference between the pKa values is the basis for the dual use of the pyranine fluorescent probe. Furthermore, the protonated and deprotonated states of pyranine absorb and emit at different wavelengths, making it easy to focus on a specific state. Pyranine has been used for decades as a fluorescent pH indicator for physiological pH values, which is based on its acid-base equilibrium in the ground state. While the unique excited-state proton transfer (ESPT) properties of photoacids have been explored for more than a half-century, it is only recently that photoacids and especially pyranine have been used as fluorescent probes for the local environment of the probe, especially the hydration layer surrounding it and related proton diffusion properties. Such use of photoacids is based on their capability for ESPT from the photoacid to a nearby proton acceptor, which is usually, but not necessarily, water. In this Account, we detail the photophysical properties of pyranine, distinguishing between the processes in the ground state and the ones in the excited state. We further review the different utilization of pyranine for probing different properties of the environment. Our main perspective is on the emerging use of the ESPT process for deciphering the hydration layer around the probe and other parameters related to proton diffusion taking place while the molecule is in the excited state, focusing primarily on bio-related materials. Special attention is given to how to perform the experiments and, most importantly, how to interpret their results. We also briefly discuss the breadth of possibilities in making pyranine derivatives and the use of pyranine for controlling dynamic reactions.
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Affiliation(s)
- Ramesh Nandi
- Schulich Faculty of Chemistry, Technion − Israel Institute of Technology, Haifa 3200003, Israel
| | - Nadav Amdursky
- Schulich Faculty of Chemistry, Technion − Israel Institute of Technology, Haifa 3200003, Israel
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Polymeric Nanosystems Applied for Metal-Based Drugs and Photosensitizers Delivery: The State of the Art and Recent Advancements. Pharmaceutics 2022; 14:pharmaceutics14071506. [PMID: 35890401 PMCID: PMC9320085 DOI: 10.3390/pharmaceutics14071506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 07/03/2022] [Accepted: 07/12/2022] [Indexed: 11/17/2022] Open
Abstract
Nanotechnology-based approaches for targeting the delivery and controlled release of metal-based therapeutic agents have revealed significant potential as tools for enhancing the therapeutic effect of metal-based agents and minimizing their systemic toxicities. In this context, a series of polymer-based nanosized systems designed to physically load or covalently conjugate metal-based therapeutic agents have been remarkably improving their bioavailability and anticancer efficacy. Initially, the polymeric nanocarriers were applied for platinum-based chemotherapeutic agents resulting in some nanoformulations currently in clinical tests and even in medical applications. At present, these nanoassemblies have been slowly expanding for nonplatinum-containing metal-based chemotherapeutic agents. Interestingly, for metal-based photosensitizers (PS) applied in photodynamic therapy (PDT), especially for cancer treatment, strategies employing polymeric nanocarriers have been investigated for almost 30 years. In this review, we address the polymeric nanocarrier-assisted metal-based therapeutics agent delivery systems with a specific focus on non-platinum systems; we explore some biological and physicochemical aspects of the polymer–metallodrug assembly. Finally, we summarize some recent advances in polymeric nanosystems coupled with metal-based compounds that present potential for successful clinical applications as chemotherapeutic or photosensitizing agents. We hope this review can provide a fertile ground for the innovative design of polymeric nanosystems for targeting the delivery and controlled release of metal-containing therapeutic agents.
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Singh D, Kaur P, Attri S, Singh S, Sharma P, Mohana P, Kaur K, Kaur H, Singh G, Rashid F, Singh D, Kumar A, Rajput A, Bedi N, Singh B, Buttar HS, Arora S. Recent Advances in the Local Drug Delivery Systems for Improvement of Anticancer Therapy. Curr Drug Deliv 2021; 19:560 - 586. [PMID: 34906056 DOI: 10.2174/1567201818666211214112710] [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] [Received: 03/08/2021] [Revised: 09/29/2021] [Accepted: 10/12/2021] [Indexed: 11/22/2022]
Abstract
The conventional anticancer chemotherapies not only cause serious toxic effects, but also produce resistance in tumor cells exposed to long-term therapy. Usually, the killing of metastasized cancer cells requires long-term therapy with higher drug doses, because the cancer cells develop resistance due to the induction of poly-glycoproteins (P-gps) that act as a transmembrane efflux pump to transport drugs out of the cells. During the last few decades, scientists have been exploring new anticancer drug delivery systems such as microencapsulation, hydrogels, and nanotubes to improve bioavailability, reduce drug-dose requirement, decrease multiple drug resistance, and to save normal cells as non-specific targets. Hopefully, the development of novel drug delivery vehicles (nanotubes, liposomes, supramolecules, hydrogels, and micelles) will assist to deliver drug molecules at the specific target site and reduce the undesirable side effects of anticancer therapies in humans. Nanoparticles and lipid formulations are also designed to deliver small drug payload at the desired tumor cell sites for their anticancer actions. This review will focus on the recent advances in the drug delivery systems, and their application in treating different cancer types in humans.
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Affiliation(s)
- Davinder Singh
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar. India
| | - Prabhjot Kaur
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar. India
| | - Shivani Attri
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar. India
| | - Sharabjit Singh
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar. India
| | - Palvi Sharma
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar. India
| | - Pallavi Mohana
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar. India
| | - Kirandeep Kaur
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar. India
| | - Harneetpal Kaur
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar. India
| | - Gurdeep Singh
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar. India
| | - Farhana Rashid
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar. India
| | - Dilpreet Singh
- Department of Pharmaceutics, ISF College of Pharmacy, Moga. India
| | - Avinash Kumar
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar. 0
| | - Ankita Rajput
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar. 0
| | - Neena Bedi
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar. 0
| | - Balbir Singh
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar. 0
| | - Harpal Singh Buttar
- Department of Pathology and Laboratory Medicine, University of Ottawa, Faculty of Medicine, Ottawa, Ontario. Canada
| | - Saroj Arora
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar. India
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Kim JA, Long W, Kim JC. Preparation of dimethylaminopropyl octadecanamide/stearic acid vesicles incorporating azobenzene and their UV-responsive release property. Colloid Polym Sci 2021. [DOI: 10.1007/s00396-020-04806-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Muttaqien SE, Nomoto T, Dou X, Takemoto H, Matsui M, Nishiyama N. Photodynamic therapy using LCST polymers exerting pH-responsive isothermal phase transition. J Control Release 2020; 328:608-616. [DOI: 10.1016/j.jconrel.2020.09.036] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 09/07/2020] [Accepted: 09/18/2020] [Indexed: 12/11/2022]
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9
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Abri Aghdam M, Bagheri R, Mosafer J, Baradaran B, Hashemzaei M, Baghbanzadeh A, de la Guardia M, Mokhtarzadeh A. Recent advances on thermosensitive and pH-sensitive liposomes employed in controlled release. J Control Release 2019; 315:1-22. [DOI: 10.1016/j.jconrel.2019.09.018] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 09/26/2019] [Accepted: 09/27/2019] [Indexed: 12/12/2022]
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Hlapisi N, Motaung TE, Linganiso LZ, Oluwafemi OS, Songca SP. Encapsulation of Gold Nanorods with Porphyrins for the Potential Treatment of Cancer and Bacterial Diseases: A Critical Review. Bioinorg Chem Appl 2019; 2019:7147128. [PMID: 31182957 PMCID: PMC6515112 DOI: 10.1155/2019/7147128] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Accepted: 02/04/2019] [Indexed: 01/23/2023] Open
Abstract
Cancer and bacterial diseases have been the most incidental diseases to date. According to the World Health Report 2018, at least every family is affected by cancer around the world. In 2012, 14.1 million people were affected by cancer, and that figure is bound to increase to 21.6 million in 2030. Medicine therefore sorts out ways of treatment using conventional methods which have been proven to have many side effects. Researchers developed photothermal and photodynamic methods to treat both cancer and bacterial diseases. These methods pose fewer effects on the biological systems but still no perfect method has been synthesized. The review serves to explore porphyrin and gold nanorods to be used in the treatment of cancer and bacterial diseases: porphyrins as photosensitizers and gold nanorods as delivery agents. In addition, the review delves into ways of incorporating photothermal and photodynamic therapy aimed at producing a less toxic, more efficacious, and specific compound for the treatment.
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Affiliation(s)
- Nthabeleng Hlapisi
- Department of Chemistry, University of Zululand, X1001, KwaDlangezwa, KwaZulu-Natal, South Africa
| | - Tshwafo E. Motaung
- Department of Chemistry, University of Zululand, X1001, KwaDlangezwa, KwaZulu-Natal, South Africa
| | - Linda Z. Linganiso
- Department of Chemistry, University of Zululand, X1001, KwaDlangezwa, KwaZulu-Natal, South Africa
| | - Oluwatobi S. Oluwafemi
- Department of Applied Chemistry, University of Johannesburg, P.O. Box 17011, Doornfontein, Johannesburg 2028, South Africa
- Centre for Nanomaterials Science Research, University of Johannesburg, Johannesburg, South Africa
| | - Sandile P. Songca
- Department of Chemistry, University of Kwazulu Natal, Kwazulu Natal, South Africa
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Anirudhan TS, Parvathy J. Novel Thiolated Chitosan-Polyethyleneglycol blend/Montmorillonite composite formulations for the oral delivery of insulin. ACTA ACUST UNITED AC 2018. [DOI: 10.1016/j.bcdf.2018.02.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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12
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Mineart KP, Venkataraman S, Yang YY, Hedrick JL, Prabhu VM. Fabrication and Characterization of Hybrid Stealth Liposomes. Macromolecules 2018; 51:3184-3192. [PMID: 32322115 PMCID: PMC7175670 DOI: 10.1021/acs.macromol.8b00361] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Next-generation liposome systems for anticancer and therapeutic delivery require the precise insertion of stabilizing polymers and targeting ligands. Many of these functional macromolecules may be lost to micellization as a competing self-assembly landscape. Here, hybrid stealth liposomes, which utilize novel cholesteryl-functionalized block copolymers as the molecular stabilizer, are explored as a scalable platform to address this limitation. The employed block copolymers offer resistance to micellization through multiple liposome insertion moieties per molecule. A combination of thermodynamic and structural investigations for a series of hybrid stealth liposome systems suggests that a critical number of cholesteryl moieties per molecule defines whether the copolymer will or will not insert into the liposome bilayer. Colloidal stability of formed hybrid stealth liposomes further corroborates the critical copolymer architecture value.
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Affiliation(s)
- Kenneth P. Mineart
- Materials Science and Engineering Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - Shrinivas Venkataraman
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, The Nanos, Singapore 138669, Singapore
| | - Yi Yan Yang
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, The Nanos, Singapore 138669, Singapore
| | - James L. Hedrick
- IBM Almaden Research Center, 650 Harry Road, San Jose, California 95120, United States
| | - Vivek M. Prabhu
- Materials Science and Engineering Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
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Stepwise Thermo-Responsive Amino Acid-Derived Triblock Vinyl Polymers: ATRP Synthesis of Polymers, Aggregation, and Gelation Properties via Flower-Like Micelle Formation. MATERIALS 2018; 11:ma11030424. [PMID: 29543721 PMCID: PMC5873003 DOI: 10.3390/ma11030424] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Revised: 03/09/2018] [Accepted: 03/14/2018] [Indexed: 02/07/2023]
Abstract
Novel thermo-responsive ABA-type triblock copolymers (poly(NAAMen-b-NAGMe240-b-NAAMen), n = 18-72) composed of naturally occurring amino acid-based vinyl polymer blocks such as poly(N-acryloyl-l-alanine methyl ester (poly(NAAMe)) as the A segment and poly(N-acryloyl-glycine methylester)(poly(NAGMe)) as the B segment have been synthesized by the atom transfer radical polymerization (ATRP). Their thermal behaviors were analyzed in dilute aqueous solutions by turbidimetry. The turbidity curves provided two-step LCST transitions, and a flower-like micelle formation was confirmed at the temperature region between the first and second LCST transitions by dynamic light scattering, AFM and TEM. At higher copolymer concentrations, hydrogels were obtained at temperatures above the first LCST due to network formation induced with the flower-like micelles as cross-linker. The hydrogels were found to be switched to a sol state when cooled below the first LCST. These hydrogels also exhibited self-healable and injectable capabilities, which were evaluated by rheological measurements.
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14
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Recent advance of pH-sensitive nanocarriers targeting solid tumors. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2017. [DOI: 10.1007/s40005-017-0349-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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15
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Naziris N, Pippa N, Meristoudi A, Pispas S, Demetzos C. Design and development of pH-responsive HSPC:C 12H 25-PAA chimeric liposomes. J Liposome Res 2017; 27:108-117. [PMID: 27558454 DOI: 10.3109/08982104.2016.1166512] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Accepted: 03/13/2016] [Indexed: 01/07/2023]
Abstract
The application of stimuli-responsive medical practices has emerged, in which pH-sensitive liposomes figure prominently. This study investigates the impact of the incorporation of different amounts of pH-sensitive polymer, C12H25-PAA (poly(acrylic acid) with a hydrophobic end group) in l-α-phosphatidylcholine, hydrogenated (Soy) (HSPC) phospholipidic bilayers, with respect to biomimicry and functionality. PAA is a poly(carboxylic acid) molecule, classified as a pH-sensitive polymer, whose pH-sensitivity is attributed to its regulative -COOH groups, which are protonated under acidic pH (pKa ∼4.2). Our concern was to fully characterize, in a biophysical and thermodynamical manner, the mixed nanoassemblies arising from the combination of the two biomaterials. At first, we quantified the physicochemical characteristics and physical stability of the prepared chimeric nanosystems. Then, we studied their thermotropic behavior, through measurement of thermodynamical parameters, using Differential Scanning Calorimetry (DSC). Finally, the loading and release of indomethacin (IND) were evaluated, as well as the physicochemical properties and stability of the nanocarriers incorporating it. As expected, thermodynamical findings are in line with physicochemical results and also explain the loading and release profiles of IND. The novelty of this investigation is the utilization of these pH-sensitive chimeric advanced Drug Delivery nano Systems (aDDnSs) in targeted drug delivery which relies entirely on the biophysics and thermodynamics between such designs and the physiological membranes and environment of living organisms.
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Affiliation(s)
- Nikolaos Naziris
- a Department of Pharmaceutical Technology, Faculty of Pharmacy , National and Kapodistrian University of Athens , Athens , Greece and
| | - Natassa Pippa
- a Department of Pharmaceutical Technology, Faculty of Pharmacy , National and Kapodistrian University of Athens , Athens , Greece and
- b Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation , Athens , Greece
| | - Anastasia Meristoudi
- b Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation , Athens , Greece
| | - Stergios Pispas
- b Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation , Athens , Greece
| | - Costas Demetzos
- a Department of Pharmaceutical Technology, Faculty of Pharmacy , National and Kapodistrian University of Athens , Athens , Greece and
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16
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Hrubý M, Filippov SK, Štěpánek P. Supramolecular structures and self-association processes in polymer systems. Physiol Res 2017; 65:S165-S178. [PMID: 27762583 DOI: 10.33549/physiolres.933419] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Self-organization in a polymer system appears when a balance is achieved between long-range repulsive and short-range attractive forces between the chemically different building blocks. Block copolymers forming supramolecular assemblies in aqueous media represent materials which are extremely useful for the construction of drug delivery systems especially for cancer applications. Such formulations suppress unwanted physicochemical properties of the encapsulated drugs, modify biodistribution of the drugs towards targeted delivery into tissue of interest and allow triggered release of the active cargo. In this review, we focus on general principles of polymer selforganization in solution, phase separation in polymer systems (driven by external stimuli, especially by changes in temperature, pH, solvent change and light) and on effects of copolymer architecture on the self-assembly process.
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Affiliation(s)
- M Hrubý
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Prague, Czech Republic.
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17
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Recent advances in the design, development, and targeting mechanisms of polymeric micelles for delivery of siRNA in cancer therapy. Prog Polym Sci 2017. [DOI: 10.1016/j.progpolymsci.2016.09.008] [Citation(s) in RCA: 127] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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18
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Abstract
pH-sensitive liposomes have been designed to deliver active compounds, specifically to acidic intracellular organelles, and to augment their cytoplasmic concentrations. These systems combine the protective effects of other liposomal formulations with specific environment-controlled drug release. They are stable at physiological pH, but abruptly discharge their contents when endocytosed into acidic compartments, allowing the drug to be released before it is exposed to the harsh environment of the lysosomes.Serum-stable formulations with minimal leakage at physiological pH and rapid drug release at pH 5.0 to 5.5 can be easily prepared by inserting a hydrophobically modified N-isopropylacrylamide/methacrylic acid copolymer (poly(NIPAM-co-MAA)) in the lipid bilayer of sterically stabilized liposomes. The present chapter describes polymer synthesis, as well as the preparation and characterization of large unilamellar pH-sensitive vesicles.
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Affiliation(s)
- Nicolas Bertrand
- Faculty of Pharmacy, Université Laval, CHU de Quebec Research Center, 2705 Boul Laurier, G1V 1B3, Quebec, QC, Canada
| | - Pierre Simard
- Biomod Concepts, 1821B Lavoisier, Saint-Julie, J3E 1Y6, Québec, Canada
| | - Jean-Christophe Leroux
- Institute of Pharmaceutical Sciences, ETH Zürich, Vladimir-Prelog-Weg 3, HCI H 301, 8093, Zürich, Switzerland.
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19
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Klemetsrud T, Kjøniksen AL, Hiorth M, Jacobsen J, Smistad G. Polymer coated liposomes for use in the oral cavity - a study of the in vitro toxicity, effect on cell permeability and interaction with mucin. J Liposome Res 2016; 28:62-73. [PMID: 27809639 DOI: 10.1080/08982104.2016.1255640] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
In this study we investigated the in vitro toxicity, impact on cell permeability and mucoadhesive potential of polymer-coated liposomes intended for use in the oral cavity. A TR146 cell line was used as a model. The overall aim was to end up with a selection of safe polymer coated liposomes with promising mucoadhesive properties for drug delivery to the oral cavity. The following polymers were tested: chitosan, low-methoxylated pectin (LM-pectin), high-methoxylated pectin (HM-pectin), amidated pectin (AM-pectin), Eudragit, poly(N-isopropylacrylamide-co-methacrylic acid) (p(NIPAAM-co-MAA)), hydrophobically modified hydroxyethyl cellulose (HM-HEC), and hydrophobically modified ethyl hydroxyethyl cellulose (HM-EHEC). With chitosan as an exception, all the systems exhibited no significant effect on cell viability and permeability at the considered concentrations. Additionally, all the formulations showed to a varying degree an interaction with mucin (BSM type I-S); the positively charged formulations exhibited the strongest interaction, while the negatively and neutrally charged formulations displayed a moderate or low interaction. The ability to interact with mucin makes all the liposomal formulations promising for oromucosal administration. Although the chitosan-coated liposomes affected the cell viability, this formulation also influenced the cell permeability, which makes it an interesting candidate for systemic drug delivery from the oral cavity.
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Affiliation(s)
- Therese Klemetsrud
- a Department of Pharmacy , School of Pharmacy, University of Oslo , Blindern , Oslo , Norway
| | - Anna-Lena Kjøniksen
- b Faculty of Engineering , Østfold University College , Halden , Norway , and
| | - Marianne Hiorth
- a Department of Pharmacy , School of Pharmacy, University of Oslo , Blindern , Oslo , Norway
| | - Jette Jacobsen
- c Section for Pharmaceutical Design and Drug Delivery, Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen , Universitetsparken 2, Copenhagen , Denmark
| | - Gro Smistad
- a Department of Pharmacy , School of Pharmacy, University of Oslo , Blindern , Oslo , Norway
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20
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Ahmed S, Fujita S, Matsumura K. Enhanced protein internalization and efficient endosomal escape using polyampholyte-modified liposomes and freeze concentration. NANOSCALE 2016; 8:15888-15901. [PMID: 27439774 DOI: 10.1039/c6nr03940e] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Here we show a new strategy for efficient freeze concentration-mediated cytoplasmic delivery of proteins, obtained via the endosomal escape property of polyampholyte-modified liposomes. The freeze concentration method successfully induces the efficient internalization of proteins simply by freezing cells with protein and nanocarrier complexes. However, the mechanism of protein internalization remains unclear. Here, we designed a novel protein delivery carrier by modifying liposomes through incorporating hydrophobic polyampholytes therein. These complexes were characterized for particle size, encapsulation efficiency, and cytotoxicity. Flow cytometry and microscopic analysis showed that the adsorption and internalization of protein-loaded polyampholyte-modified liposomes after freezing were enhanced compared with that observed in unfrozen complexes. Inhibition studies demonstrated that the internalization mechanism differs between unmodified and polyampholyte-modified liposomes. Furthermore, polyampholyte-modified liposomes exhibited high efficacy in facilitating endosomal escape to enhance protein delivery to the cytoplasm with low toxicity. These results strongly suggest that the freeze concentration-based strategy could be widely utilised for efficient cargo delivery into the cytoplasm in vitro not only in cancer treatment but also for gene therapy as well.
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Affiliation(s)
- Sana Ahmed
- School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan.
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21
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Akram M, Wang L, Yu H, Khalid H, Abbasi NM, ul-Abdin Z, Chen Y, Sun R, Jie S, Saleem M. Synthesis of reductive responsive polyphosphazenes and their fabrication of nanocarriers for drug delivery application. INT J POLYM MATER PO 2016. [DOI: 10.1080/00914037.2016.1149847] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Muhammad Akram
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, China
| | - Li Wang
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, China
| | - Haojie Yu
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, China
| | - Hamad Khalid
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, China
| | - Nasir M. Abbasi
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, China
| | - Zain- ul-Abdin
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, China
| | - Yongsheng Chen
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, China
| | - Ruoli Sun
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, China
| | - Shan Jie
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, China
| | - Muhammad Saleem
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, China
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22
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Liu S, Yang J, Ren H, O'Keeffe-Ahern J, Zhou D, Zhou H, Chen J, Guo T. Multifunctional oligomer incorporation: a potent strategy to enhance the transfection activity of poly(l-lysine). Biomater Sci 2016; 4:522-32. [DOI: 10.1039/c5bm00530b] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The multifunctional oligomer incorporation strategy is used for the first time to evaluate target effects by the ligand modified oligomer assembly, forming complexes with DNA and polycations.
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Affiliation(s)
- Shuai Liu
- Key Laboratory of Functional Polymer Materials
- Ministry of Education
- Institute of Polymer Chemistry
- College of Chemistry
- Nankai University
| | - Jixiang Yang
- Key Laboratory of Functional Polymer Materials
- Ministry of Education
- Institute of Polymer Chemistry
- College of Chemistry
- Nankai University
| | - Hongqi Ren
- Key Laboratory of Functional Polymer Materials
- Ministry of Education
- Institute of Polymer Chemistry
- College of Chemistry
- Nankai University
| | | | - Dezhong Zhou
- Charles Institute of Dermotology
- University College Dublin
- Dublin 4
- Ireland
| | - Hao Zhou
- Department of Biochemistry and Molecular Biology
- College of Life Science
- Nankai University
- Tianjin 300071
- China
| | - Jiatong Chen
- Department of Biochemistry and Molecular Biology
- College of Life Science
- Nankai University
- Tianjin 300071
- China
| | - Tianying Guo
- Key Laboratory of Functional Polymer Materials
- Ministry of Education
- Institute of Polymer Chemistry
- College of Chemistry
- Nankai University
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23
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Anirudhan TS, Parvathy J, Nair AS. Evaluation of micellar architecture based on functionalized chitosan for the in vitro release of an antibiotic. Des Monomers Polym 2015. [DOI: 10.1080/15685551.2015.1092010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Affiliation(s)
- T. S. Anirudhan
- Department of Chemistry, School of Physical and Mathematical Sciences, University of Kerala, Trivandrum, India
| | - J. Parvathy
- Department of Chemistry, School of Physical and Mathematical Sciences, University of Kerala, Trivandrum, India
| | - Anoop S. Nair
- Department of Chemistry, School of Physical and Mathematical Sciences, University of Kerala, Trivandrum, India
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24
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Doxorubicin encapsulated in stealth liposomes conferred with light-triggered drug release. Biomaterials 2015; 75:193-202. [PMID: 26513413 DOI: 10.1016/j.biomaterials.2015.10.027] [Citation(s) in RCA: 164] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Revised: 10/08/2015] [Accepted: 10/13/2015] [Indexed: 01/01/2023]
Abstract
Stealth liposomes can be used to extend the blood circulation time of encapsulated therapeutics. Inclusion of 2 molar % porphyrin-phospholipid (PoP) imparted optimal near infrared (NIR) light-triggered release of doxorubicin (Dox) from conventional sterically stabilized stealth liposomes. The type and amount of PoP affected drug loading, serum stability and drug release induced by NIR light. Cholesterol and PEGylation were required for Dox loading, but slowed light-triggered release. Dox in stealth PoP liposomes had a long circulation half-life in mice of 21.9 h and was stable in storage for months. Following intravenous injection and NIR irradiation, Dox deposition increased ∼ 7 fold in treated subcutaneous human pancreatic xenografts. Phototreatment induced mild tumor heating and complex tumor hemodynamics. A single chemophototherapy treatment with Dox-loaded stealth PoP liposomes (at 5-7 mg/kg Dox) eradicated tumors while corresponding chemo- or photodynamic therapies were ineffective. A low dose 3 mg/kg Dox phototreatment with stealth PoP liposomes was more effective than a maximum tolerated dose of free (7 mg/kg) or conventional long-circulating liposomal Dox (21 mg/kg). To our knowledge, Dox-loaded stealth PoP liposomes represent the first reported long-circulating nanoparticle capable of light-triggered drug release.
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25
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Tila D, Ghasemi S, Yazdani-Arazi SN, Ghanbarzadeh S. Functional liposomes in the cancer-targeted drug delivery. J Biomater Appl 2015; 30:3-16. [PMID: 25823898 DOI: 10.1177/0885328215578111] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Cancer is considered as one of the most severe health problems and is currently the third most common cause of death in the world after heart and infectious diseases. Novel therapies are constantly being discovered, developed and trialed. Many of the current anticancer agents exhibit non-ideal pharmaceutical and pharmacological properties and are distributed non-specifically throughout the body. This results in death of the both normal healthy and malignant cells and substantially leads to accruing a variety of serious toxic side effects. Therefore, the efficient systemic therapy of cancer is almost impossible due to harmful side effects of anticancer agents to the healthy organs and tissues. Furthermore, several problems such as low bioavailability of the drugs, low drug concentrations at the site of action, lack of drug specificity and drug-resistance also cause many restrictions on clinical applications of these drugs in the tumor therapy. Different types of the liposomal formulations have been used in medicine due to their distinctive advantages associated with their structural flexibility in the encapsulation of various agents with different physicochemical properties. They can also mediate delivery of the cargo to the appropriate cell type and subcellular compartment, reducing the effective dosage and possible side effects which are related to high systemic concentrations. Therefore, these novel systems were found very promising and encouraging dosage forms for the treatment of different types of cancer by increasing efficiency and reducing the systemic toxicity due to the specific drug delivery and targeting.
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Affiliation(s)
- Dena Tila
- Biotechnology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Saeed Ghasemi
- Department of Medicinal Chemistry, School of Pharmacy, Guilan University of Medical Sciences, Rasht, Iran
| | | | - Saeed Ghanbarzadeh
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Sciences, Tabriz, Iran
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26
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Wang H, Xu M, Xiong M, Cheng J. Reduction-responsive dithiomaleimide-based nanomedicine with high drug loading and FRET-indicated drug release. Chem Commun (Camb) 2015; 51:4807-10. [PMID: 25692778 PMCID: PMC4486260 DOI: 10.1039/c5cc00148j] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Dithiomaleimide-based camptothecin-containing nanoparticles are designed to have exceptionally high drug loading and are capable of reduction-responsive, FRET-indicated drug release.
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Affiliation(s)
- Hua Wang
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, 1304 West Green Street, Urbana, IL 61801, USA.
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27
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Nakayama M, Akimoto J, Okano T. Polymeric micelles with stimuli-triggering systems for advanced cancer drug targeting. J Drug Target 2015; 22:584-99. [PMID: 25012066 DOI: 10.3109/1061186x.2014.936872] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Since the 1990s, nanoscale drug carriers have played a pivotal role in cancer chemotherapy, acting through passive drug delivery mechanisms and subsequent pharmaceutical action at tumor tissues with reduction of adverse effects. Polymeric micelles, as supramolecular assemblies of amphiphilic polymers, have been considerably developed as promising drug carrier candidates, and a number of clinical studies of anticancer drug-loaded polymeric micelle carriers for cancer chemotherapy applications are now in progress. However, these systems still face several issues; at present, the simultaneous control of target-selective delivery and release of incorporated drugs remains difficult. To resolve these points, the introduction of stimuli-responsive mechanisms to drug carrier systems is believed to be a promising approach to provide better solutions for future tumor drug targeting strategies. As possible trigger signals, biological acidic pH, light, heating/cooling and ultrasound actively play significant roles in signal-triggering drug release and carrier interaction with target cells. This review article summarizes several molecular designs for stimuli-responsive polymeric micelles in response to variation of pH, light and temperature and discusses their potentials as next-generation tumor drug targeting systems.
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Affiliation(s)
- Masamichi Nakayama
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University (TWIns) , Kawada-Cho, Shinjuku-ku, Tokyo , Japan
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28
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Abstract
The use of nanoparticulate pharmaceutical drug delivery systems (NDDSs) to enhance the in vivo effectiveness of drugs is now well established. The development of multifunctional and stimulus-sensitive NDDSs is an active area of current research. Such NDDSs can have long circulation times, target the site of the disease and enhance the intracellular delivery of a drug. This type of NDDS can also respond to local stimuli that are characteristic of the pathological site by, for example, releasing an entrapped drug or shedding a protective coating, thus facilitating the interaction between drug-loaded nanocarriers and target cells or tissues. In addition, imaging contrast moieties can be attached to these carriers to track their real-time biodistribution and accumulation in target cells or tissues. Here, I highlight recent developments with multifunctional and stimuli-sensitive NDDSs and their therapeutic potential for diseases including cancer, cardiovascular diseases and infectious diseases.
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29
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Cao X, Chen Y, Chai W, Zhang W, Wang Y, Fu PF. Thermoresponsive self-assembled nanovesicles based on amphiphilic triblock copolymers and their potential applications as smart drug release carriers. J Appl Polym Sci 2014. [DOI: 10.1002/app.41361] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Xia Cao
- School of Material Science and Engineering; Zhengzhou University; Zhengzhou 450001 China
| | - Yunxiang Chen
- School of Material Science and Engineering; Zhengzhou University; Zhengzhou 450001 China
| | - Wenchao Chai
- School of Material Science and Engineering; Zhengzhou University; Zhengzhou 450001 China
| | - Wenjie Zhang
- School of Material Science and Engineering; Zhengzhou University; Zhengzhou 450001 China
| | - Yudong Wang
- School of Material Science and Engineering; Zhengzhou University; Zhengzhou 450001 China
| | - Peng-Fei Fu
- Dow Corning Corporation; Midland Michigan 48686
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30
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Zhang Z, Zheng P, Cai D, An X, Shen W. Interaction of Ionic Surfactants with a Hydrophobic Modified Thermosensitive Polymer. J DISPER SCI TECHNOL 2014. [DOI: 10.1080/01932691.2013.805655] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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31
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Paliwal SR, Paliwal R, Vyas SP. A review of mechanistic insight and application of pH-sensitive liposomes in drug delivery. Drug Deliv 2014; 22:231-42. [PMID: 24524308 DOI: 10.3109/10717544.2014.882469] [Citation(s) in RCA: 125] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The pH-sensitive liposomes have been extensively used as an alternative to conventional liposomes in effective intracellular delivery of therapeutics/antigen/DNA/diagnostics to various compartments of the target cell. Such liposomes are destabilized under acidic conditions of the endocytotic pathway as they usually contain pH-sensitive lipid components. Therefore, the encapsulated content is delivered into the intracellular bio-environment through destabilization or its fusion with the endosomal membrane. The therapeutic efficacy of pH-sensitive liposomes enables them as biomaterial with commercial utility especially in cancer treatment. In addition, targeting ligands including antibodies can be anchored on the surface of pH-sensitive liposomes to target specific cell surface receptors/antigen present on tumor cells. These vesicles have also been widely explored for antigen delivery and serve as immunological adjuvant to enhance the immune response to antigens. The present review deals with recent research updates on application of pH-sensitive liposomes in chemotherapy/diagnostics/antigen/gene delivery etc.
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Affiliation(s)
- Shivani Rai Paliwal
- Department of Pharmaceutics, SLT Institute of Pharmaceutical Sciences, Guru Ghasidas Vishwavidyalaya Bilaspur , Chhattisgarh , India
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32
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Akbulut M, D’Addio SM, Gindy ME, Prud’homme RK. Novel methods of targeted drug delivery: the potential of multifunctional nanoparticles. Expert Rev Clin Pharmacol 2014; 2:265-82. [DOI: 10.1586/ecp.09.4] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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33
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Henderson IM, Adams PG, Montaño GA, Paxton WF. Ionic effects on the behavior of thermoresponsive PEO-PNIPAAm block copolymers. ACTA ACUST UNITED AC 2014. [DOI: 10.1002/polb.23444] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Ian M. Henderson
- Center for Integrated Nanotechnologies; Sandia National Laboratories; Albuquerque New Mexico 87185
| | - Peter G. Adams
- Center for Integrated Nanotechnologies; Los Alamos National Laboratory; Los Alamos New Mexico 87544
| | - Gabriel A. Montaño
- Center for Integrated Nanotechnologies; Los Alamos National Laboratory; Los Alamos New Mexico 87544
| | - Walter F. Paxton
- Center for Integrated Nanotechnologies; Sandia National Laboratories; Albuquerque New Mexico 87185
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34
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Chi W, Liu S, Yang J, Wang R, Ren H, Zhou H, Chen J, Guo T. Evaluation of the effects of amphiphilic oligomers in PEI based ternary complexes on the improvement of pDNA delivery. J Mater Chem B 2014; 2:5387-5396. [DOI: 10.1039/c4tb00807c] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
(HEMA-b-NIPAM) was incorporated into PEI/P(HEMA-b-NIPAM)/pDNA ternary complexes through non-electrostatic assembly to enhance the interaction between complexes and cellular/endocellular membranes to improve gene transfection.
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Affiliation(s)
- Wenhao Chi
- Key Laboratory of Functional Polymer Materials
- Ministry of Education
- Institute of Polymer Chemistry
- College of Chemistry
- Nankai University
| | - Shuai Liu
- Key Laboratory of Functional Polymer Materials
- Ministry of Education
- Institute of Polymer Chemistry
- College of Chemistry
- Nankai University
| | - Jixiang Yang
- Key Laboratory of Functional Polymer Materials
- Ministry of Education
- Institute of Polymer Chemistry
- College of Chemistry
- Nankai University
| | - Ruiyu Wang
- Key Laboratory of Functional Polymer Materials
- Ministry of Education
- Institute of Polymer Chemistry
- College of Chemistry
- Nankai University
| | - Hongqi Ren
- Key Laboratory of Functional Polymer Materials
- Ministry of Education
- Institute of Polymer Chemistry
- College of Chemistry
- Nankai University
| | - Hao Zhou
- Department of Biochemistry and Molecular Biology
- College of Life Science
- Nankai University
- Tianjin 300071, China
| | - Jiatong Chen
- Department of Biochemistry and Molecular Biology
- College of Life Science
- Nankai University
- Tianjin 300071, China
| | - Tianying Guo
- Key Laboratory of Functional Polymer Materials
- Ministry of Education
- Institute of Polymer Chemistry
- College of Chemistry
- Nankai University
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35
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Ghanbarzadeh S, Arami S, Pourmoazzen Z, Khorrami A. Improvement of the antiproliferative effect of rapamycin on tumor cell lines by poly (monomethylitaconate)-based pH-sensitive, plasma stable liposomes. Colloids Surf B Biointerfaces 2013; 115:323-30. [PMID: 24394948 DOI: 10.1016/j.colsurfb.2013.12.024] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2013] [Revised: 12/05/2013] [Accepted: 12/10/2013] [Indexed: 01/05/2023]
Abstract
pH-responsive polymers produce liposomes with pH-sensitive property which can release their encapsulated drug under mild acidic conditions found inside the cellular endosomes, inflammatory tissues and cancerous cells. The aim of this study was preparing pH-sensitive and plasma stable liposomes in order to enhance the selectivity and antiproliferative effect of Rapamycin. In the present study we used PEG-poly (monomethylitaconate)-CholC6 (PEG-PMMI-CholC6) copolymer and Oleic acid (OA) to induce pH-sensitive property in Rapamycin liposomes. pH-sensitive liposomal formulations bearing copolymer PEG-PMMI-CholC6 and OA were characterized in regard to physicochemical stability, pH-responsiveness and stability in human plasma. The ability of pH-sensitive liposomes in enhancing the cytotoxicity of Rapamycin was evaluated in vitro by using colon cancer cell line (HT-29) and compared with its cytotoxicity on human umbilical vein endothelial cell (HUVEC) line. Both formulations were found to release their contents under mild acidic conditions rapidly. However, unlike OA-based liposomes, the PEG-PMMI-CholC6 bearing liposomes preserved their pH-sensitivity in plasma. Both types of pH-sensitive Rapamycin-loaded liposomes exhibited high physicochemical stability and could deliver antiproliferative agent into HT-29 cells much more efficiently in comparison with conventional liposomes. Conversely, the antiproliferative effect of pH-sensitive liposomes on HUVEC cell line was less than conventional liposomes. This study showed that both OA and PEG-PMMI-CholC6-based vesicles could submit pH-sensitive property, however, only PEG-PMMI-CholC6-based liposomes could preserve pH-sensitive property after incubation in plasma. As a result pH-sensitive PEG-PMMI-CholC6-based liposomal formulation can improve the selectivity, stability and antiproliferative effect of Rapamycin.
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Affiliation(s)
- Saeed Ghanbarzadeh
- 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; Student Research Committee, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Sanam Arami
- Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Sciences, Tabriz, Iran; Student Research Committee, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Zhaleh Pourmoazzen
- Chemistry Department, Science Faculty, Azarbaijan Shahid Madani University, Iran
| | - Arash Khorrami
- Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Sciences, Tabriz, Iran; Student Research Committee, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Pharmacology & Toxicology, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran.
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Lee SM, Nguyen ST. Smart Nanoscale Drug Delivery Platforms from Stimuli-Responsive Polymers and Liposomes. Macromolecules 2013; 46:9169-9180. [PMID: 28804160 PMCID: PMC5552073 DOI: 10.1021/ma401529w] [Citation(s) in RCA: 101] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Since the 1960's, stimuli-responsive polymers have been utilized as functional soft materials for biological applications such as the triggered-release delivery of biologically active cargos. Over the same period, liposomes have been explored as an alternative drug delivery system with potentials to decrease the toxic side effects often associated with conventional small-molecule drugs. However, the lack of drug-release triggers and the instability of bare liposomes often limit their practical applications, causing short circulation time and low therapeutic efficacy. This perspective article highlights recent work in integrating these two materials together to achieve a targetable, triggerable nanoscale platform that fulfills all the characteristics of a near-ideal drug delivery system. Through a drop-in, post-synthesis modification strategy, a network of stimuli-responsive polymers can be integrated onto the surface of liposomes to form polymer-caged nanobins, a multifunctional nanoscale delivery platform that allows for multi-drug loading, targeted delivery, triggered drug-release, and theranostic capabilities.
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Affiliation(s)
- Sang-Min Lee
- Department of Chemistry and Center of Cancer Nanotechnology Excellence, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113
- Department of Chemistry, The Catholic University of Korea, Bucheon, Gyeonggi-do 420-743 Korea
| | - SonBinh T. Nguyen
- Department of Chemistry and Center of Cancer Nanotechnology Excellence, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113
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Cheng W, Kumar JN, Zhang Y, Liu Y. pH- and redox-responsive poly(ethylene glycol) and cholesterol-conjugated poly(amido amine)s based micelles for controlled drug delivery. Macromol Biosci 2013; 14:347-58. [PMID: 24106152 DOI: 10.1002/mabi.201300339] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2013] [Revised: 08/22/2012] [Indexed: 12/22/2022]
Abstract
An optimized condition is identified to prepare linear poly(amido amine)s via Michael Addition polymerization of trifunctional amine, 4-(aminomethyl)piperidine (AMPD), with an equimolar diacrylamide, N,N-cystaminebis(acrylamide) (BAC). Poly(ethylene glycol) (PEG) and cholesterol (CE) are conjugated to linear poly(BAC-AMPD) through the reactions with the secondary amino groups in the backbone, respectively, to form poly(BAC-AMPD)-g-PEG-g-CE. The chemical structures of poly(BAC-AMPD) and poly(BAC-AMPD)-g-PEG-g-CE are characterized using NMR and gel permeation chromatography (GPC). Transmission electron microscopy (TEM), dynamic light scattering (DLS) and (1)H NMR results show that micelles with PEG shells and hydrophobic cores composed of poly(BAC-AMPD) and CE are formed via self-assembly of poly(BAC-AMPD)-g-PEG-g-CE in aqueous solution, and the micelles of poly(BAC-AMPD)-g-PEG-g-CE can be degraded by the presence of L-dithiothreitol and show a limited cytotoxicity in vitro. The anti-cancer drug, doxorubicin (DOX), can be loaded into the micelles. The DOX loaded micelles of poly(BAC-AMPD)-g-PEG-g-CE show pH- and redox-responsive drug release and redox-induced formation of aggregates, and it is shown that the DOX loaded micelles can deliver DOX into cells and show a higher efficacy in killing cancer cells than free drug.
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Affiliation(s)
- Weiren Cheng
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 3 Research Link, 117602, Singapore; Department of Bioengineering, National University of Singapore, 9 Engineering Drive 1, Block EA #03-12, 117576, Singapore
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Abstract
In recent years, liposomes have been employed with growing success as pharmaceutical carriers for antineoplastic drugs. One specific strategy used to enhance in vivo liposome-mediated drug delivery is the improvement of intracytoplasmic delivery. In this context, pH-sensitive liposomes (pHSLip) have been designed to explore the endosomal acidification process, which may lead to a destabilization of the liposomes, followed by a release of their contents into the cell cytoplasm. This review considers the current status of pHSLip development and its applicability in cancer treatment, focusing on the mechanisms of pH sensitivity and liposomal composition of pHSLip. The final section will discuss the application of these formulations in both in vitro and in vivo studies of antitumor efficacy.
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Zheng H, Xing L, Cao Y, Che S. Coordination bonding based pH-responsive drug delivery systems. Coord Chem Rev 2013. [DOI: 10.1016/j.ccr.2013.03.007] [Citation(s) in RCA: 108] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Zhang L, Jeong YI, Zheng S, Suh H, Kang DH, Kim I. Fabrication of microspheres via solvent volatization induced aggregation of self-assembled nanomicellar structures and their use as a pH-dependent drug release system. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:65-74. [PMID: 23215353 DOI: 10.1021/la303634y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
A series of oleamide derivatives, (C(18)H(34)NO)(2)(CH(2))(n) [n = 2 (1a), 3 (1b), 4 (1c), or 6 (1d); C(18)H(34)NO = oleic amide fragment] and (C(18)H(34)NO)(CH(2))(6)NH(2) (2), have been synthesized and their self-assembly is investigated in ethanol/water media. Self-assembly of 1a and 1b in ethanol/water (1/0.1 v/v) solution (5 mg mL(-1)) yields microspheres (MSs) with the average diameter ∼10 μm via a gradual temperature reduction and solvent volatilization process. Under the same self-assembly conditions, microrods (average diameter ∼6 μm and several tens of micrometers in length), micronecklace-like, and shape-irregular microparticles are formed from the self-assembly of 1c, 1d, and 2, respectively. The kinetics of evolution for their self-assemblies by dynamic light scattering technique and in situ observation by optical microscopy reveals that the microstructures formation is from a well-behaved aggregation of nanoscale micelles induced by solvent volatilization. The FT-IR and temperature-dependent (1)H-NMR spectra demonstrate the hydrogen bonding force and π-π stacking, which drove the self-assembly of all oleamide derivatives in ethanol/water. Among the fabricated microstructures, the MSs from 1a exhibit the best dispersity, which thus have been used as a scaffold for the in vitro release of doxorubicin. The results demonstrate a pH-sensitive release process, enhanced release specifically at low pH 5.2.
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Affiliation(s)
- Lidong Zhang
- The WCU Center for Synthetic Polymer Bioconjugate Hybrid Materials, Department of Polymer Science and Engineering, Pusan National University, Pusan 609 735, Korea
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Fonseca AC, Ferreira P, Cordeiro RA, Mendonça PV, Góis JR, Gil MH, Coelho JFJ. Drug Delivery Systems for Predictive Medicine: Polymers as Tools for Advanced Applications. NEW STRATEGIES TO ADVANCE PRE/DIABETES CARE: INTEGRATIVE APPROACH BY PPPM 2013. [DOI: 10.1007/978-94-007-5971-8_16] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Jackson AW, Fulton DA. Making polymeric nanoparticles stimuli-responsive with dynamic covalent bonds. Polym Chem 2013. [DOI: 10.1039/c2py20727c] [Citation(s) in RCA: 137] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Huan M, Zhang B, Teng Z, Cui H, Wang J, Liu X, Xia H, Zhou S, Mei Q. In vitro and in vivo antitumor activity of a novel pH-activated polymeric drug delivery system for doxorubicin. PLoS One 2012; 7:e44116. [PMID: 23028490 PMCID: PMC3454402 DOI: 10.1371/journal.pone.0044116] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2011] [Accepted: 08/01/2012] [Indexed: 01/01/2023] Open
Abstract
Background Conventional chemotherapy agent such as doxorubicin (DOX) is of limited clinical use because of its inherently low selectivity, which can lead to systemic toxicity in normal healthy tissue. Methods A pH stimuli-sensitive conjugate based on polyethylene glycol (PEG) with covalently attachment doxorubicin via hydrazone bond (PEG-hyd-DOX) was prepared for tumor targeting delivery system. While PEG-DOX conjugates via amid bond (PEG-ami-DOX) was synthesized as control. Results The synthetic conjugates were confirmed by proton nuclear magnetic resonance (NMR) spectroscopy, the release profile of DOX from PEG-hyd-DOX was acid-liable for the hydrazone linkage between DOX and PEG, led to different intracellular uptake route; intracellular accumulation of PEG-hyd-DOX was higher than PEG-ami-DOX due to its pH-triggered profile, and thereby more cytotoxicity against MCF-7, MDA-MB-231 (breast cancer models) and HepG2 (hepatocellular carcinoma model) cell lines. Following the in vitro results, we xenografted MDA-MB-231 cell onto SCID mice, PEG-hyd-DOX showed stronger antitumor efficacy than free DOX and was tumor-targeting. Conclusions Results from these in vivo experiments were consistent with our in vitro results; suggested this pH-triggered PEG-hyd-DOX conjugate could target DOX to tumor tissues and release free drugs by acidic tumor environment, which would be potent in antitumor drug delivery.
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Affiliation(s)
- Menglei Huan
- Department of Pharmaceutics, School of Pharmacy, Fourth Military Medical University, Xi'an, People's Republic of China
| | - Bangle Zhang
- Department of Pharmaceutics, School of Pharmacy, Fourth Military Medical University, Xi'an, People's Republic of China
| | - Zenghui Teng
- Department of Pharmaceutics, School of Pharmacy, Fourth Military Medical University, Xi'an, People's Republic of China
| | - Han Cui
- Department of Pharmaceutics, School of Pharmacy, Fourth Military Medical University, Xi'an, People's Republic of China
| | - Jieping Wang
- Department of Pharmacy, Tangdu Hospital, Fourth Military Medical University, Xi'an, People's Republic of China
| | - Xinyou Liu
- Department of Pharmacy, Tangdu Hospital, Fourth Military Medical University, Xi'an, People's Republic of China
| | - Hui Xia
- Department of Thoracic-Cardio Surgery, First Affiliated Hospital of PLA General Hospital, Beijing, People's Republic of China
| | - Siyuan Zhou
- Department of Pharmaceutics, School of Pharmacy, Fourth Military Medical University, Xi'an, People's Republic of China
| | - Qibing Mei
- Key Laboratory of Gastrointestinal Pharmacology of Chinese Materia Medica of the State Administration of Traditional Chinese Medicine, School of Pharmacy, Fourth Military Medical University, Xi'an, People's Republic of China
- * E-mail:
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Han D, Boissiere O, Kumar S, Tong X, Tremblay L, Zhao Y. Two-Way CO2-Switchable Triblock Copolymer Hydrogels. Macromolecules 2012. [DOI: 10.1021/ma3015189] [Citation(s) in RCA: 128] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Dehui Han
- Département
de chimie and ‡Département de médecine nucléaire et de radiobiologie
and Centre d’imagerie moléculaire de Sherbrooke, Université de Sherbrooke, Sherbrooke,
QC, Canada J1K 2R1
| | - Olivier Boissiere
- Département
de chimie and ‡Département de médecine nucléaire et de radiobiologie
and Centre d’imagerie moléculaire de Sherbrooke, Université de Sherbrooke, Sherbrooke,
QC, Canada J1K 2R1
| | - Surjith Kumar
- Département
de chimie and ‡Département de médecine nucléaire et de radiobiologie
and Centre d’imagerie moléculaire de Sherbrooke, Université de Sherbrooke, Sherbrooke,
QC, Canada J1K 2R1
| | - Xia Tong
- Département
de chimie and ‡Département de médecine nucléaire et de radiobiologie
and Centre d’imagerie moléculaire de Sherbrooke, Université de Sherbrooke, Sherbrooke,
QC, Canada J1K 2R1
| | - Luc Tremblay
- Département
de chimie and ‡Département de médecine nucléaire et de radiobiologie
and Centre d’imagerie moléculaire de Sherbrooke, Université de Sherbrooke, Sherbrooke,
QC, Canada J1K 2R1
| | - Yue Zhao
- Département
de chimie and ‡Département de médecine nucléaire et de radiobiologie
and Centre d’imagerie moléculaire de Sherbrooke, Université de Sherbrooke, Sherbrooke,
QC, Canada J1K 2R1
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pH-sensitive vesicles, polymeric micelles, and nanospheres prepared with polycarboxylates. Adv Drug Deliv Rev 2012; 64:979-92. [PMID: 21996056 DOI: 10.1016/j.addr.2011.09.006] [Citation(s) in RCA: 320] [Impact Index Per Article: 26.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2011] [Revised: 09/16/2011] [Accepted: 09/20/2011] [Indexed: 01/06/2023]
Abstract
Titratable polyanions, and more particularly polymers bearing carboxylate groups, have been used in recent years to produce a variety of pH-sensitive colloids. These polymers undergo a coil-to-globule conformational change upon a variation in pH of the surrounding environment. This conformational change can be exploited to trigger the release of a drug from a drug delivery system in a pH-dependent fashion. This review describes the current status of pH-sensitive vesicles, polymeric micelles, and nanospheres prepared with polycarboxylates and their performance as nano-scale drug delivery systems, with emphasis on our recent contribution to this field.
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Han D, Tong X, Boissière O, Zhao Y. General Strategy for Making CO 2-Switchable Polymers. ACS Macro Lett 2012; 1:57-61. [PMID: 35578453 DOI: 10.1021/mz2000175] [Citation(s) in RCA: 210] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
By discovering that poly(N,N-dimethylaminoethyl methacrylate) (PDMAEMA) in water can react with carbon dioxide (CO2) and have its lower critical solution temperature (LCST) reversibly tuned by passing CO2 and argon (Ar) through the solution, we describe a general strategy for imparting a CO2-switchable LCST or water solubility to polymers of broad interest like poly(N-isopropylacrylamide) (PNIPAM) and poly[2-(2-methoxyethoxy)ethyl methacrylate] (PMEO2MA). We show that by easy copolymerization incorporating DMAEMA as a CO2-responsive trigger into PNIPAM or PMEO2MA, their LCST can effectively be switched by the gases. Two examples of applications were further demonstrated: upon CO2 or Ar bubbling at a constant solution temperature, hydrogels could undergo a reversible volume transition and block copolymer micelles could be dissociated and reassembled. This study opens the door to a wide range of easily accessible CO2-switchable polymers, enabling the use of CO2 as an effective trigger for smart materials and devices.
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Affiliation(s)
- Dehui Han
- Département de Chimie, Université de Sherbrooke, Sherbrooke, Québec, Canada J1K
2R1
| | - Xia Tong
- Département de Chimie, Université de Sherbrooke, Sherbrooke, Québec, Canada J1K
2R1
| | - Olivier Boissière
- Département de Chimie, Université de Sherbrooke, Sherbrooke, Québec, Canada J1K
2R1
| | - Yue Zhao
- Département de Chimie, Université de Sherbrooke, Sherbrooke, Québec, Canada J1K
2R1
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Zheng H, Huang Z, Che S. Mesostructured chitosan–silica hybrid as a biodegradable carrier for a pH-responsive drug delivery system. Dalton Trans 2012; 41:5038-44. [DOI: 10.1039/c2dt12347a] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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