1
|
Xiang K, Li Y, Cong H, Yu B, Shen Y. Peptide-based non-viral gene delivery: A comprehensive review of the advances and challenges. Int J Biol Macromol 2024; 266:131194. [PMID: 38554914 DOI: 10.1016/j.ijbiomac.2024.131194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 03/14/2024] [Accepted: 03/26/2024] [Indexed: 04/02/2024]
Abstract
Gene therapy is the most effective treatment option for diseases, but its effectiveness is affected by the choice and design of gene carriers. The genes themselves have to pass through multiple barriers in order to enter the cell and therefore require additional vectors to carry them inside the cell. In gene therapy, peptides have unique properties and potential as gene carriers, which can effectively deliver genes into specific cells or tissues, protect genes from degradation, improve gene transfection efficiency, and enhance gene targeting and biological responsiveness. This paper reviews the research progress of peptides and their derivatives in the field of gene delivery recently, describes the obstacles encountered by foreign materials to enter the interior of the cell, and introduces the following classes of functional peptides that can carry materials into the interior of the cell, and assist in transmembrane translocation of carriers, thus breaking through endosomal traps to enable successful entry of genetic materials into the nucleus of the cell. The paper also discusses the combined application of peptide vectors with other vectors to enhance its transfection ability, explores current challenges encountered by peptide vectors, and looks forward to future developments in the field.
Collapse
Affiliation(s)
- Kai Xiang
- College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao 266071, China
| | - Yanan Li
- College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao 266071, China
| | - Hailin Cong
- College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao 266071, China; State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao 266071, China; School of Materials Science and Engineering, Shandong University of Technology, Zibo 255000, China.
| | - Bing Yu
- College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao 266071, China; State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao 266071, China.
| | - Youqing Shen
- College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao 266071, China; Key Laboratory of Biomass Chemical Engineering of Ministry of Education, Center for Bio nanoengineering, and Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| |
Collapse
|
2
|
Wang X, Zhao Y, Yan M, Liang X, Zhao N, Lu T. iRGD mediated pH-responsive mesoporous silica enhances drug accumulation in tumors. Eur J Pharm Sci 2024; 195:106725. [PMID: 38346565 DOI: 10.1016/j.ejps.2024.106725] [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: 09/27/2023] [Revised: 01/23/2024] [Accepted: 02/07/2024] [Indexed: 02/29/2024]
Abstract
The limited penetration of nanocarriers into tumors and the slow release of drugs from these carriers to tumor cells are significant challenges in cancer therapy. In this study, we developed a novel drug delivery carrier derived from mesoporous silica, dually modified with the tumor-homing cyclic peptide iRGD (CRGDKGPDC) and the pH-responsive polymer poly(2-ethyl-2-oxazoline) (PEOz) for treating triple-negative breast cancer. The carrier selectively bound to the αvβ3 integrin receptor, which is specifically expressed in MDA-MB-231 breast cancer cells and vessels. Subsequently, it penetrated deep into the tumor parenchyma through NRP-1 receptor-dependent internalization, with the drug-loaded particles releasing drugs rapidly in the acidic cytoplasmic environment. Results indicated that the drug release rate of PEOz-modified formulations was pH-dependent. Lysosomal escape experiments demonstrated that PEOz-modified particles efficiently escaped lysosomes to release drugs. In vitro cytotoxicity assays revealed that iRGD-functionalized particles were more cytotoxic to NRP-1-positive MDA-MB-231 cells compared to NRP-1-negative MCF-7 cells. Cellular uptake studies demonstrated that iRGD mediated enhanced endocytosis of nanoparticles into MDA-MB-231 cells. In vitro tumor cell spheroid penetration assays confirmed that the PEOz and iRGD dual-modified carrier facilitated deeper distribution of DOX in multicellular spheroids compared to free DOX. Moreover, in a nude mouse model of triple-negative breast cancer, the dual-modified drug-loaded carrier significantly inhibited tumor growth without inducing weight loss or liver and kidney damage. This dual-modified mesoporous silica presents a novel and promising delivery carrier for enhancing cancer treatment.
Collapse
Affiliation(s)
- Xiaoning Wang
- College of Pharmacy, Xi'an Medical University, Xi'an, Shaanxi 710021, PR China; The School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, PR China.
| | - Yangguang Zhao
- College of Pharmacy, Xi'an Medical University, Xi'an, Shaanxi 710021, PR China
| | - Mengru Yan
- College of Pharmacy, Xi'an Medical University, Xi'an, Shaanxi 710021, PR China
| | - Xiaoyan Liang
- College of Pharmacy, Xi'an Medical University, Xi'an, Shaanxi 710021, PR China
| | - Ning Zhao
- College of Pharmacy, Xi'an Medical University, Xi'an, Shaanxi 710021, PR China
| | - Tingli Lu
- The School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, PR China
| |
Collapse
|
3
|
Delaney DS, Liew LJ, Lye J, Atlas MD, Wong EYM. Overcoming barriers: a review on innovations in drug delivery to the middle and inner ear. Front Pharmacol 2023; 14:1207141. [PMID: 37927600 PMCID: PMC10620978 DOI: 10.3389/fphar.2023.1207141] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Accepted: 10/02/2023] [Indexed: 11/07/2023] Open
Abstract
Despite significant advances in the development of therapeutics for hearing loss, drug delivery to the middle and inner ear remains a challenge. As conventional oral or intravascular administration are ineffective due to poor bioavailability and impermeability of the blood-labyrinth-barrier, localized delivery is becoming a preferable approach for certain drugs. Even then, localized delivery to the ear precludes continual drug delivery due to the invasive and potentially traumatic procedures required to access the middle and inner ear. To address this, the preclinical development of controlled release therapeutics and drug delivery devices have greatly advanced, with some now showing promise clinically. This review will discuss the existing challenges in drug development for treating the most prevalent and damaging hearing disorders, in particular otitis media, perforation of the tympanic membrane, cholesteatoma and sensorineural hearing loss. We will then address novel developments in drug delivery that address these including novel controlled release therapeutics such as hydrogel and nanotechnology and finally, novel device delivery approaches such as microfluidic systems and cochlear prosthesis-mediated delivery. The aim of this review is to investigate how drugs can reach the middle and inner ear more efficiently and how recent innovations could be applied in aiding drug delivery in certain pathologic contexts.
Collapse
Affiliation(s)
- Derek S. Delaney
- Hearing Therapeutics, Ear Science Institute Australia, Nedlands, WA, Australia
- Faculty of Health Sciences, Curtin Health Innovation Research Institute, Curtin University, Bentley, WA, Australia
| | - Lawrence J. Liew
- Hearing Therapeutics, Ear Science Institute Australia, Nedlands, WA, Australia
- Centre for Ear Sciences, Medical School, The University of Western Australia, Nedlands, WA, Australia
| | - Joey Lye
- Hearing Therapeutics, Ear Science Institute Australia, Nedlands, WA, Australia
| | - Marcus D. Atlas
- Hearing Therapeutics, Ear Science Institute Australia, Nedlands, WA, Australia
- Centre for Ear Sciences, Medical School, The University of Western Australia, Nedlands, WA, Australia
- Faculty of Health Sciences, Curtin Medical School, Curtin University, Bentley, WA, Australia
| | - Elaine Y. M. Wong
- Hearing Therapeutics, Ear Science Institute Australia, Nedlands, WA, Australia
- Centre for Ear Sciences, Medical School, The University of Western Australia, Nedlands, WA, Australia
- Faculty of Health Sciences, Curtin Medical School, Curtin University, Bentley, WA, Australia
| |
Collapse
|
4
|
Qiu C, Xia F, Zhang J, Shi Q, Meng Y, Wang C, Pang H, Gu L, Xu C, Guo Q, Wang J. Advanced Strategies for Overcoming Endosomal/Lysosomal Barrier in Nanodrug Delivery. RESEARCH (WASHINGTON, D.C.) 2023; 6:0148. [PMID: 37250954 PMCID: PMC10208951 DOI: 10.34133/research.0148] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Accepted: 04/27/2023] [Indexed: 05/31/2023]
Abstract
Nanocarriers have therapeutic potential to facilitate drug delivery, including biological agents, small-molecule drugs, and nucleic acids. However, their efficiency is limited by several factors; among which, endosomal/lysosomal degradation after endocytosis is the most important. This review summarizes advanced strategies for overcoming endosomal/lysosomal barriers to efficient nanodrug delivery based on the perspective of cellular uptake and intracellular transport mechanisms. These strategies include promoting endosomal/lysosomal escape, using non-endocytic methods of delivery to directly cross the cell membrane to evade endosomes/lysosomes and making a detour pathway to evade endosomes/lysosomes. On the basis of the findings of this review, we proposed several promising strategies for overcoming endosomal/lysosomal barriers through the smarter and more efficient design of nanodrug delivery systems for future clinical applications.
Collapse
Affiliation(s)
- Chong Qiu
- Artemisinin Research Center, and Institute of Chinese Materia Medica,
China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Fei Xia
- Artemisinin Research Center, and Institute of Chinese Materia Medica,
China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Junzhe Zhang
- Artemisinin Research Center, and Institute of Chinese Materia Medica,
China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Qiaoli Shi
- Artemisinin Research Center, and Institute of Chinese Materia Medica,
China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Yuqing Meng
- Artemisinin Research Center, and Institute of Chinese Materia Medica,
China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Chen Wang
- Artemisinin Research Center, and Institute of Chinese Materia Medica,
China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Huanhuan Pang
- Artemisinin Research Center, and Institute of Chinese Materia Medica,
China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Liwei Gu
- Artemisinin Research Center, and Institute of Chinese Materia Medica,
China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Chengchao Xu
- Artemisinin Research Center, and Institute of Chinese Materia Medica,
China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Qiuyan Guo
- Artemisinin Research Center, and Institute of Chinese Materia Medica,
China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Jigang Wang
- Artemisinin Research Center, and Institute of Chinese Materia Medica,
China Academy of Chinese Medical Sciences, Beijing 100700, China
- Department of Nephrology, and Shenzhen Clinical Research Centre for Geriatrics, Shenzhen People's Hospital, The First Affiliated Hospital,
Southern University of Science and Technology, Shenzhen, Guangdong 518020, China
| |
Collapse
|
5
|
Tuncaboylu DC, Wischke C. Opportunities and Challenges of Switchable Materials for Pharmaceutical Use. Pharmaceutics 2022; 14:2331. [PMID: 36365149 PMCID: PMC9696173 DOI: 10.3390/pharmaceutics14112331] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 10/19/2022] [Accepted: 10/22/2022] [Indexed: 06/27/2024] Open
Abstract
Switchable polymeric materials, which can respond to triggering signals through changes in their properties, have become a major research focus for parenteral controlled delivery systems. They may enable externally induced drug release or delivery that is adaptive to in vivo stimuli. Despite the promise of new functionalities using switchable materials, several of these concepts may need to face challenges associated with clinical use. Accordingly, this review provides an overview of various types of switchable polymers responsive to different types of stimuli and addresses opportunities and challenges that may arise from their application in biomedicine.
Collapse
|
6
|
Tian Y, Tirrell MV, LaBelle JL. Harnessing the Therapeutic Potential of Biomacromolecules through Intracellular Delivery of Nucleic Acids, Peptides, and Proteins. Adv Healthc Mater 2022; 11:e2102600. [PMID: 35285167 PMCID: PMC9232950 DOI: 10.1002/adhm.202102600] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Revised: 02/09/2022] [Indexed: 12/19/2022]
Abstract
Biomacromolecules have long been at the leading edge of academic and pharmaceutical drug development and clinical translation. With the clinical advances of new therapeutics, such as monoclonal antibodies and nucleic acids, the array of medical applications of biomacromolecules has broadened considerably. A major on-going effort is to expand therapeutic targets within intracellular locations. Owing to their large sizes, abundant charges, and hydrogen-bond donors and acceptors, advanced delivery technologies are required to deliver biomacromolecules effectively inside cells. In this review, strategies used for the intracellular delivery of three major forms of biomacromolecules: nucleic acids, proteins, and peptides, are highlighted. An emphasis is placed on synthetic delivery approaches and the major hurdles needed to be overcome for their ultimate clinical translation.
Collapse
Affiliation(s)
- Yu Tian
- Pritzker School of Molecular Engineering, The University of Chicago, 5640 S Ellis Ave, Chicago, IL, 60637, USA
| | - Matthew V Tirrell
- Pritzker School of Molecular Engineering, The University of Chicago, 5640 S Ellis Ave, Chicago, IL, 60637, USA
| | - James L LaBelle
- Department of Pediatrics, Section of Hematology/Oncology, The University of Chicago, 900 E 57th St, Chicago, IL, 60637, USA
| |
Collapse
|
7
|
Kermaniyan SS, Chen M, Zhang C, Smith SA, Johnston APR, Such C, Such GK. Understanding the Biological Interactions of pH Swellable Nanoparticles. Macromol Biosci 2022; 22:e2100445. [PMID: 35182032 DOI: 10.1002/mabi.202100445] [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: 11/02/2021] [Revised: 02/02/2022] [Indexed: 11/07/2022]
Abstract
pH responsive nanoparticles have generated significant interest for use as drug delivery systems due to their potential for inducible release at low pH. The pH variation from the blood stream (pH 7.4) to intracellular compartments of cells called endosomes/lysosomes (pH < 5.0) has been of particular interest. However, one of the limitations with nanoparticle delivery systems is the ability to migrate out of these compartments to the cytosol or other organelles, via a process termed endosomal escape. Previous studies have postulated that pH responsive nanoparticles can facilitate endosomal escape through a range of mechanisms including membrane interaction, pH-induced swelling, and the proton-sponge effect. In this study we designed a series of pH swellable nanoparticles (85-100 nm) and investigated their impact on biological interactions, particularly endosomal escape. The particles exhibited tuneable pH-induced swelling (from 120% to 200%) and had good buffering capacity. Cellular association was studied using flow cytometry and endosomal escape was determined using a calcein leakage assay. Interestingly, we found no endosomal escape with all nanoparticle formulations, which suggests there are limitations with both the proton-sponge effect and pH-induced swelling mechanism as the primary methods for inducing endosomal escape. This article is protected by copyright. All rights reserved.
Collapse
Affiliation(s)
- Sarah S Kermaniyan
- School of Chemistry, The University of Melbourne, Parkville, Victoria, 3010, Australia
| | - Moore Chen
- Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, 3052, Australia
| | - Changhe Zhang
- School of Chemistry, The University of Melbourne, Parkville, Victoria, 3010, Australia
| | - Samuel A Smith
- School of Chemistry, The University of Melbourne, Parkville, Victoria, 3010, Australia
| | - Angus P R Johnston
- Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, 3052, Australia
| | - Chris Such
- School of Chemistry, The University of Melbourne, Parkville, Victoria, 3010, Australia
| | - Georgina K Such
- School of Chemistry, The University of Melbourne, Parkville, Victoria, 3010, Australia
| |
Collapse
|
8
|
Rotov AY, Romanov IS, Tarakanchikova YV, Astakhova LA. Application Prospects for Synthetic Nanoparticles in Optogenetic Retinal Prosthetics. J EVOL BIOCHEM PHYS+ 2021. [DOI: 10.1134/s0022093021060132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
9
|
Marschall ALJ. Targeting the Inside of Cells with Biologicals: Chemicals as a Delivery Strategy. BioDrugs 2021; 35:643-671. [PMID: 34705260 PMCID: PMC8548996 DOI: 10.1007/s40259-021-00500-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/27/2021] [Indexed: 12/17/2022]
Abstract
Delivering macromolecules into the cytosol or nucleus is possible in vitro for DNA, RNA and proteins, but translation for clinical use has been limited. Therapeutic delivery of macromolecules into cells requires overcoming substantially higher barriers compared to the use of small molecule drugs or proteins in the extracellular space. Breakthroughs like DNA delivery for approved gene therapies and RNA delivery for silencing of genes (patisiran, ONPATTRO®, Alnylam Pharmaceuticals, Cambridge, MA, USA) or for vaccination such as the RNA-based coronavirus disease 2019 (COVID-19) vaccines demonstrated the feasibility of using macromolecules inside cells for therapy. Chemical carriers are part of the reason why these novel RNA-based therapeutics possess sufficient efficacy for their clinical application. A clear advantage of synthetic chemicals as carriers for macromolecule delivery is their favourable properties with respect to production and storage compared to more bioinspired vehicles like viral vectors or more complex drugs like cellular therapies. If biologicals can be applied to intracellular targets, the druggable space is substantially broadened by circumventing the limited utility of small molecules for blocking protein–protein interactions and the limitation of protein-based drugs to the extracellular space. An in depth understanding of the macromolecular cargo types, carrier types and the cell biology of delivery is crucial for optimal application and further development of biologicals inside cells. Basic mechanistic principles of the molecular and cell biological aspects of cytosolic/nuclear delivery of macromolecules, with particular consideration of protein delivery, are reviewed here. The efficiency of macromolecule delivery and applications in research and therapy are highlighted.
Collapse
Affiliation(s)
- Andrea L J Marschall
- Institute of Biochemistry, Biotechnology and Bioinformatics, Technische Universität Braunschweig, Brunswick, Germany.
| |
Collapse
|
10
|
Rayamajhi S, Marchitto J, Nguyen TDT, Marasini R, Celia C, Aryal S. pH-responsive cationic liposome for endosomal escape mediated drug delivery. Colloids Surf B Biointerfaces 2020; 188:110804. [DOI: 10.1016/j.colsurfb.2020.110804] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 01/08/2020] [Accepted: 01/15/2020] [Indexed: 11/29/2022]
|
11
|
Abstract
Bioavailability is an ancient but effective terminology by which the entire therapeutic efficacy of a drug directly or indirectly relays. Despite considering general plasma bioavailability, specific organ/tissue bioavailability will pave the path to broad spectrum dose calculation. Clear knowledge and calculative vision on bioavailability can improve the research and organ-targeting phenomenon. This article comprises a detailed introduction on bioavailability along with regulatory aspects, kinetic data and novel bioformulative approaches to achieve improved organ specific bioavailability, which may not be readily related to blood plasma bioavailability.
Collapse
|
12
|
Cupic KI, Rennick JJ, Johnston APR, Such GK. Controlling endosomal escape using nanoparticle composition: current progress and future perspectives. Nanomedicine (Lond) 2019; 14:215-223. [DOI: 10.2217/nnm-2018-0326] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Polymer nanoparticles offer significant benefits for improving delivery of biological therapeutics such as DNA and proteins, as they allow the cargo to be protected until it is delivered to a target cell. However, there are still challenges with achieving efficient delivery to the optimal cellular region. One significant roadblock is escape of nanoparticles from within the endosomal/lysosomal compartments into the cytosol. Here, we review the recent advances in understanding endosomal escape of polymer nanoparticles. We also discuss the current progress on investigating how nanoparticle structure can control endosomal escape. It is important to understand the fundamental biological processes that govern endosomal escape in order to design more effective therapeutic delivery systems.
Collapse
Affiliation(s)
- Kristofer I Cupic
- The School of Chemistry, The University of Melbourne, Parkville, Victoria 3010, Australia
- Drug Delivery, Disposition & Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
| | - Joshua J Rennick
- Drug Delivery, Disposition & Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
| | - Angus PR Johnston
- Drug Delivery, Disposition & Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, Monash University, Parkville, Victoria 3052, Australia
| | - Georgina K Such
- The School of Chemistry, The University of Melbourne, Parkville, Victoria 3010, Australia
| |
Collapse
|
13
|
Smith SA, Selby LI, Johnston APR, Such GK. The Endosomal Escape of Nanoparticles: Toward More Efficient Cellular Delivery. Bioconjug Chem 2018; 30:263-272. [PMID: 30452233 DOI: 10.1021/acs.bioconjchem.8b00732] [Citation(s) in RCA: 362] [Impact Index Per Article: 60.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Many emerging therapies rely on the delivery of biological cargo into the cytosol. Nanoparticle delivery systems hold great potential to deliver these therapeutics but are hindered by entrapment and subsequent degradation in acidic compartments of the endo/lysosomal pathway. Engineering polymeric delivery systems that are able to escape the endosome has significant potential to address this issue. However, the development of safe and effective delivery systems that can reliably deliver cargo to the cytosol is still a challenge. Greater understanding of the properties that govern endosomal escape and how it can be quantified is important for the development of more efficient nanoparticle delivery systems. This Topical Review highlights the current understanding of the mechanisms by which nanoparticles escape the endosome, and the emerging techniques to improve the quantification of endosomal escape.
Collapse
Affiliation(s)
- Samuel A Smith
- The School of Chemistry , The University of Melbourne , Parkville , Victoria , Australia , 3010
| | - Laura I Selby
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences , Monash University , Parkville , Victoria , Australia , 3052
| | - Angus P R Johnston
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences , Monash University , Parkville , Victoria , Australia , 3052
| | - Georgina K Such
- The School of Chemistry , The University of Melbourne , Parkville , Victoria , Australia , 3010
| |
Collapse
|
14
|
Muro S. Alterations in Cellular Processes Involving Vesicular Trafficking and Implications in Drug Delivery. Biomimetics (Basel) 2018; 3:biomimetics3030019. [PMID: 31105241 PMCID: PMC6352689 DOI: 10.3390/biomimetics3030019] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2018] [Revised: 07/09/2018] [Accepted: 07/10/2018] [Indexed: 12/31/2022] Open
Abstract
Endocytosis and vesicular trafficking are cellular processes that regulate numerous functions required to sustain life. From a translational perspective, they offer avenues to improve the access of therapeutic drugs across cellular barriers that separate body compartments and into diseased cells. However, the fact that many factors have the potential to alter these routes, impacting our ability to effectively exploit them, is often overlooked. Altered vesicular transport may arise from the molecular defects underlying the pathological syndrome which we aim to treat, the activity of the drugs being used, or side effects derived from the drug carriers employed. In addition, most cellular models currently available do not properly reflect key physiological parameters of the biological environment in the body, hindering translational progress. This article offers a critical overview of these topics, discussing current achievements, limitations and future perspectives on the use of vesicular transport for drug delivery applications.
Collapse
Affiliation(s)
- Silvia Muro
- Institute for Bioscience and Biotechnology Research and Fischell Department of Bioengineering, University of Maryland, College Park, MD 20742, USA.
- Catalan Institution for Research and Advanced Studies (ICREA), 08010 Barcelona, Spain.
- Institute for Bioengineering of Catalonia (IBEC) of the Barcelona Institute of Science and Technology (BIST), 08028 Barcelona, Spain.
| |
Collapse
|
15
|
Guo P, Wang B, Liu D, Yang J, Subramanyam K, McCarthy CR, Hebert J, Moses MA, Auguste DT. Using Atomic Force Microscopy to Predict Tumor Specificity of ICAM1 Antibody-Directed Nanomedicines. NANO LETTERS 2018; 18:2254-2262. [PMID: 29505261 DOI: 10.1021/acs.nanolett.7b04801] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Atomic force microscopy (AFM) is a powerful tool to detect in vitro antibody-antigen interactions. To date, however, AFM-measured antibody-antigen interactions have yet to be exploited to predict in vivo tumor specificity of antibody-directed nanomedicines. In this study, we have utilized AFM to directly measure the biomechanical interaction between live triple negative breast cancer (TNBC) cells and an antibody against ICAM1, a recently identified TNBC target. For the first time, we provide proof-of-principle evidence that in vitro TNBC cell-ICAM1 antibody binding force measured by AFM on live cells more precisely correlates with in vivo tumor accumulation and therapeutic efficacy of ICAM1 antibody-directed liposomes than ICAM1 gene and surface protein overexpression levels. These studies demonstrate that live cell-antibody binding force measurements may be used as a novel in vitro metric for predicting the in vivo tumor recognition of antibody-directed nanomedicines.
Collapse
Affiliation(s)
- P Guo
- Department of Biomedical Engineering , The City College of New York , 160 Convent Avenue , New York , New York 10031 , United States
- Vascular Biology Program , Boston Children's Hospital , 300 Longwood Avenue , Boston , Massachusetts 02115 , United States
- Department of Surgery , Harvard Medical School and Boston Children's Hospital , 300 Longwood Avenue , Boston , Massachusetts 02115 , United States
| | - B Wang
- Department of Biomedical Engineering , The City College of New York , 160 Convent Avenue , New York , New York 10031 , United States
| | - D Liu
- Department of Biomedical Engineering , The City College of New York , 160 Convent Avenue , New York , New York 10031 , United States
- Department of Chemical Engineering , Northeastern University , 360 Huntington Avenue , Boston , Massachusetts 02115 , United States
| | - J Yang
- Vascular Biology Program , Boston Children's Hospital , 300 Longwood Avenue , Boston , Massachusetts 02115 , United States
- Department of Surgery , Harvard Medical School and Boston Children's Hospital , 300 Longwood Avenue , Boston , Massachusetts 02115 , United States
| | - K Subramanyam
- School of Engineering and Applied Sciences , Harvard University , 29 Oxford Street , Cambridge , Massachusetts 02115 , United States
| | - C R McCarthy
- Department of Biomedical Engineering , The City College of New York , 160 Convent Avenue , New York , New York 10031 , United States
| | - J Hebert
- Department of Chemical Engineering , Northeastern University , 360 Huntington Avenue , Boston , Massachusetts 02115 , United States
| | - M A Moses
- Vascular Biology Program , Boston Children's Hospital , 300 Longwood Avenue , Boston , Massachusetts 02115 , United States
- Department of Surgery , Harvard Medical School and Boston Children's Hospital , 300 Longwood Avenue , Boston , Massachusetts 02115 , United States
| | - D T Auguste
- Department of Biomedical Engineering , The City College of New York , 160 Convent Avenue , New York , New York 10031 , United States
- Department of Chemical Engineering , Northeastern University , 360 Huntington Avenue , Boston , Massachusetts 02115 , United States
| |
Collapse
|
16
|
Wang Z, Deng X, Ding J, Zhou W, Zheng X, Tang G. Mechanisms of drug release in pH-sensitive micelles for tumour targeted drug delivery system: A review. Int J Pharm 2018; 535:253-260. [DOI: 10.1016/j.ijpharm.2017.11.003] [Citation(s) in RCA: 134] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2017] [Revised: 11/02/2017] [Accepted: 11/02/2017] [Indexed: 12/31/2022]
|
17
|
Wang P, Chen S, Cao Z, Wang G. NIR Light-, Temperature-, pH-, and Redox-Responsive Polymer-Modified Reduced Graphene Oxide/Mesoporous Silica Sandwich-Like Nanocomposites for Controlled Release. ACS APPLIED MATERIALS & INTERFACES 2017; 9:29055-29062. [PMID: 28795557 DOI: 10.1021/acsami.7b07468] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Here a novel quadruple-responsive nanocarrier based on reduced graphene oxide/mesoporous silica sandwich-like nanocomposites (rGO@MS) modified by pH- and temperature-responsive poly(N,N-dimethylaminoethyl methacrylate) (PDMAEMA) with a linker of disulfide was constructed via surface-initiated atom transfer radical polymerization. The polymer chains would be used as gatekeepers to control the release of the loaded cargo molecules under pH, temperature, NIR light and redox stimuli. The cargo molecules (rhodamine B) were demonstrated to release from the polymer-modified nanocomposites triggered by the quadruple-stimuli. It is noted that the release of the loaded rhodamine B from the nanocarriers could be enhanced greatly under the synergistic effect of multiple stimuli. The prepared quadruple-responsive polymer-modified nanocomposites show a bright prospect in the field of smart nanocarriers for controlled release.
Collapse
Affiliation(s)
- Panjun Wang
- School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, China
| | - Shuo Chen
- School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, China
| | - Ziquan Cao
- School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, China
| | - Guojie Wang
- School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, China
| |
Collapse
|
18
|
Liu JN, Bu W, Shi J. Chemical Design and Synthesis of Functionalized Probes for Imaging and Treating Tumor Hypoxia. Chem Rev 2017; 117:6160-6224. [DOI: 10.1021/acs.chemrev.6b00525] [Citation(s) in RCA: 556] [Impact Index Per Article: 79.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Jia-nan Liu
- State
Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, P.R. China
| | - Wenbo Bu
- State
Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, P.R. China
- Shanghai
Key Laboratory of Green Chemistry and Chemical Processes, School of
Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, P.R. China
| | - Jianlin Shi
- State
Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, P.R. China
| |
Collapse
|
19
|
Lai Y, Hu Y. Unified solution for poroelastic oscillation indentation on gels for spherical, conical and cylindrical indenters. SOFT MATTER 2017; 13:852-861. [PMID: 28067395 DOI: 10.1039/c6sm02341j] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
An oscillation indentation method is developed for characterizing the local poroelastic properties of soft and hydrated materials such as hydrogels and biological tissues. In the dynamic oscillation indentation measurement, an indenter is pressed into the material to a certain depth and held for a period of time. After a plateau of force is reached, an oscillation of small depth is superimposed sweeping through a range of frequencies. The shift between the force and displacement spectra is denoted as the phase lag that characterizes the energy dissipative behavior of the soft hydrated materials due to solvent migration. A unified solution is obtained for the three widely used shapes of indenters for soft materials: cylindrical punch, spherical indenter and conical indenter. The solutions are summarized in remarkably simple forms allowing for easy extraction of material parameters including shear modulus, Poisson's ratio and diffusivity from the oscillation indentation measurements. The oscillation indentation measurement was demonstrated on a polyacrylamide (PAAm) gel using an atomic force microscope. It is shown that the time-dependent behavior of the PAAm gel at the micron scale is dominated by poroelasticity and the properties can be accurately extracted from the explicit expressions derived in this work. This method has great potential to be applied on heterogeneous biological tissues where local properties are of interest.
Collapse
Affiliation(s)
- Yang Lai
- Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA.
| | - Yuhang Hu
- Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA.
| |
Collapse
|
20
|
Zhu JY, Wan SS, Zheng DW, Lei Q, Zhuo RX, Feng J, Zhang XZ. Propelled Transnuclear Gene Transport Achieved through Intracellularly Redox-Responsive and Acidity-Accelerative Decomposition of Supramolecular Florescence-Quenchable Vectors. ACS APPLIED MATERIALS & INTERFACES 2017; 9:255-265. [PMID: 27966867 DOI: 10.1021/acsami.6b14730] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Intracellularly biotriggered decomposition of gene vectors is generally thought to benefit transfection. However, the bioresponsiveness is far from satisfactory, and the exact role of biodecomposition in the transfection process remains unclear to date. To overcome the challenges, highly rapid bioresponse of vectors has to be achieved so as to greatly amplify the intracellular deviation compared with the noncontrolled pattern. To this end, a supramolecular polyrotaxane has been elaborately designed by integrating reversible dynamics of supramolecular assembly and chemically labile bonds, in order to effectively propel intracellular decomposition. Inside tumor cells, the redox-responsive bulk dissociation of the supramolecular vector readily took place and was further accelerated by the lysosomal-acidity-triggered terminal decomposition. Both the in vitro and in vivo experiments have demonstrated that this supramolecule could mediate considerably more rapid gene accumulation in nuclei than the nonresponsive controls including PEI25K, the gold standard of nonviral vectors. Along with the structural decomposition, the supramolecule simultaneously underwent the transition of fluorescence quenching, favoring the evaluation over the bioresponsiveness inside cells. Based on the resulting data, it is suggested that the biotriggered volume expansion of supramolecule/DNA complexes may be the major factor accounting for that dramatically accelerated transnuclear gene transport during cellular mitosis, thus affecting the transfection. This study offers an understanding of the intracellular gene transport from a new viewpoint.
Collapse
Affiliation(s)
- Jing-Yi Zhu
- Key Laboratory of Biomedical Polymers of Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University , Wuhan 430072, China
| | - Shuang-Shuang Wan
- Key Laboratory of Biomedical Polymers of Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University , Wuhan 430072, China
| | - Di-Wei Zheng
- Key Laboratory of Biomedical Polymers of Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University , Wuhan 430072, China
| | - Qi Lei
- Key Laboratory of Biomedical Polymers of Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University , Wuhan 430072, China
| | - Ren-Xi Zhuo
- Key Laboratory of Biomedical Polymers of Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University , Wuhan 430072, China
| | - Jun Feng
- Key Laboratory of Biomedical Polymers of Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University , Wuhan 430072, China
| | - Xian-Zheng Zhang
- Key Laboratory of Biomedical Polymers of Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University , Wuhan 430072, China
| |
Collapse
|
21
|
Hu Y, You JO, Aizenberg J. Micropatterned Hydrogel Surface with High-Aspect-Ratio Features for Cell Guidance and Tissue Growth. ACS APPLIED MATERIALS & INTERFACES 2016; 8:21939-45. [PMID: 27089518 DOI: 10.1021/acsami.5b12268] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Surface topography has been introduced as a new tool to coordinate cell selection, growth, morphology, and differentiation. The materials explored so far for making such structural surfaces are mostly rigid and impermeable. Hydrogel, on the other hand, was proved a better synthetic media for cell culture because of its biocompatibility, softness, and high permeability. Herein, we fabricated a poly(2-hydroxyethyl methacrylate) (pHEMA) hydrogel substrate with high-aspect-ratio surface microfeatures. Such structural surface could effectively guide the orientation and shape of human mesenchymal stem cells (HMSCs). Notably, on the flat hydrogel surface, cells rounded up, whereas on the microplate patterned hydrogel surface, cells elongated and aligned along the direction parallel to the plates. The microplates were 2 μm thick, 20 μm tall, and 10-50 μm wide. The interplate spacing was 5-15 μm, and the intercolumn spacing was 5 μm. The elongation of cell body was more pronounced on the patterns with narrower interplate spacing and wider plates. The cells behaved like soft solid. The competition between surface energy and elastic energy defined the shape of the cells on the structured surfaces. The soft permeable hydrogel scaffold with surface structures was also demonstrated as being viable for long-term cell culture, and could be used to generate interconnected tissues with finely tuned cell morphology and alignment across a few centimeter sizes.
Collapse
Affiliation(s)
- Yuhang Hu
- John A. Paulson School of Engineering and Applied Sciences, Harvard University , Cambridge, Massachusetts 02138, United States
- Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign , Urbana, Illinois 61801, United States
| | - Jin-Oh You
- John A. Paulson School of Engineering and Applied Sciences, Harvard University , Cambridge, Massachusetts 02138, United States
- Department of Engineering Chemistry, Chungbuk National University , Cheongju 362-763, Republic of Korea
| | - Joanna Aizenberg
- John A. Paulson School of Engineering and Applied Sciences, Harvard University , Cambridge, Massachusetts 02138, United States
- Wyss Institute for Biologically Inspired Engineering, Harvard University , Cambridge, Massachusetts 02138, United States
- Department of Chemistry and Chemical Biology, Harvard University , Cambridge, Massachusetts 02138, United States
- Kavli Institute for Bionano Science and Technology, Harvard University , Cambridge, Massachusetts 02138, United States
| |
Collapse
|
22
|
Zhang Z, Liu H, Zhou H, Zhu X, Zhao Z, Chi X, Shan H, Gao J. A facile route to core-shell nanoparticulate formation of arsenic trioxide for effective solid tumor treatment. NANOSCALE 2016; 8:4373-4380. [PMID: 26840759 DOI: 10.1039/c5nr07860a] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Arsenic trioxide has achieved great clinical success in the treatment of acute promyelocytic leukemia (APL). However, it is difficult to replicate the success in other cancers, such as solid tumors, in part because of the rapid renal clearance and dose-limiting toxicity. Nanotechnology is expected to overcome these disadvantages through altering its pharmacokinetics and concentrating the drug at the desired sites. Herein, we report a "one-pot" method to develop arsenic-based nanodrugs by in situ coating the as-prepared arsenic nanocomplexes with porous silica shells. This process can be easily reproduced and scaled up because no complicated synthesis and purification steps are involved. This core-shell embedding method endows nanodrugs with high loading capacity (57.9 wt%) and a prolonged pH-responsive releasing profile, which is crucial to increase the drug concentration at tumor sites and improve the drug efficacy. Based on these unique features, the nanodrugs significantly inhibit the growth of solid tumors without adverse side effects. Therefore, we anticipate that the arsenic-based nanodrugs generated by this facile synthetic route may be a powerful and alternative strategy for solid tumor therapy.
Collapse
Affiliation(s)
- Zongjun Zhang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, The Key Laboratory for Chemical Biology of Fujian Province, and Department of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
| | - Hanyu Liu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, The Key Laboratory for Chemical Biology of Fujian Province, and Department of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
| | - Hualu Zhou
- State Key Laboratory of Physical Chemistry of Solid Surfaces, The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, The Key Laboratory for Chemical Biology of Fujian Province, and Department of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
| | - Xianglong Zhu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, The Key Laboratory for Chemical Biology of Fujian Province, and Department of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
| | - Zhenghuan Zhao
- State Key Laboratory of Physical Chemistry of Solid Surfaces, The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, The Key Laboratory for Chemical Biology of Fujian Province, and Department of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
| | - Xiaoqin Chi
- Fujian Provincial Key Laboratory of Chronic Liver Disease and Hepatocellular Carcinoma, Zhongshan Hospital, Xiamen University, Xiamen 361004, China
| | - Hong Shan
- Department of Radiology, The Third Affiliated Hospital and Interventional Radiology Institute, Sun Yat-sen University, Guangzhou 510630, China
| | - Jinhao Gao
- State Key Laboratory of Physical Chemistry of Solid Surfaces, The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, The Key Laboratory for Chemical Biology of Fujian Province, and Department of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
| |
Collapse
|
23
|
You JO, Rafat M, Almeda D, Maldonado N, Guo P, Nabzdyk CS, Chun M, LoGerfo FW, Hutchinson JW, Pradhan-Nabzdyk LK, Auguste DT. pH-responsive scaffolds generate a pro-healing response. Biomaterials 2015; 57:22-32. [DOI: 10.1016/j.biomaterials.2015.04.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Revised: 04/02/2015] [Accepted: 04/03/2015] [Indexed: 10/23/2022]
|
24
|
siRNA Delivery Impedes the Temporal Expression of Cytokine-Activated VCAM1 on Endothelial Cells. Ann Biomed Eng 2015; 44:895-902. [PMID: 26101035 DOI: 10.1007/s10439-015-1364-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Accepted: 06/11/2015] [Indexed: 10/24/2022]
Abstract
Leukocyte recruitment plays a key role in chronic inflammatory diseases such as cardiovascular disease, rheumatoid arthritis, and cancer. Leukocyte rolling and arrest are mediated in part by the temporally-regulated surface expression of vascular cell adhesion molecule-1 (VCAM1) on endothelial cells (ECs). In this paper, we engineered a pH-responsive vehicle comprised of 30 mol% dimethylaminoethyl methacrylate (30D) and 70 mol% hydroxyethyl methacrylate (70H) to encapsulate, protect, and deliver VCAM1 small interfering RNA (siRNA). The ability of siRNA to reduce VCAM1 gene expression is in direct opposition to its activation by cytokines. At 12 h post-activation, VCAM1 gene knockdown was 90.1 ± 7.5% when delivered via 30D/70H nanoparticles, which was on par with a leading commercial transfection agent. This translated into a 68.8 ± 6.7% reduction in the surface density of VCAM1 on cytokine-activated ECs. The pH-responsive delivery of VCAM1 siRNA efficiently reduced temporal surface protein expression, which may be used to avert leukocyte recruitment.
Collapse
|
25
|
Hu Y, Wang J, Zhang H, Jiang G, Kan C. Synthesis and characterization of monodispersed P(St-co-DMAEMA) nanoparticles as pH-sensitive drug delivery system. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 45:1-7. [PMID: 25491794 DOI: 10.1016/j.msec.2014.08.061] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2014] [Revised: 07/29/2014] [Accepted: 08/29/2014] [Indexed: 11/17/2022]
Abstract
Monodispersed poly(styrene-co-N,N'-dimethylaminoethyl methacrylate) nanoparticles (P(St-co-DMAEMA) NPs) were synthesized by emulsion polymerization. Zeta potential, volume swelling ratio and in vitro release of fluorescer coumarin-6 from the NPs were determined in buffer of various pH. With an optimized formulation, the diameter of NPs is 100 nm approximately and the polydispersity index (PI) is less than 0.1. The NPs have a hydrophilic surface and alterable surface charge which is almost neutral at normal physiological pH, but becomes much more positive under acidic conditions. The volume swelling ratios and in vitro release of coumarin-6 are highly dependent on pH, which are significantly increased at the lower pH and higher DMAEMA/St molar ratio. More than 70% of the loaded coumarin-6 could be released in 24 h at pH2, which is 2.3-folds higher than that at normal physiological pH. The P(St-co-DMAEMA) NPs show promising applications to targeted drug delivery to tumors.
Collapse
Affiliation(s)
- Yang Hu
- Department of Chemical Engineering, Key Laboratory of Advanced Materials of Ministry of Education, Tsinghua University, Beijing 100084, PR China
| | - Jishuai Wang
- Department of Chemical Engineering, Key Laboratory of Advanced Materials of Ministry of Education, Tsinghua University, Beijing 100084, PR China
| | - Hong Zhang
- Department of Chemical Engineering, Key Laboratory of Advanced Materials of Ministry of Education, Tsinghua University, Beijing 100084, PR China
| | - Guoqiang Jiang
- Department of Chemical Engineering, Key Laboratory of Industrial Biocatalysis of Ministry of Education, Tsinghua University, Beijing 100084, PR China.
| | - Chengyou Kan
- Department of Chemical Engineering, Key Laboratory of Advanced Materials of Ministry of Education, Tsinghua University, Beijing 100084, PR China.
| |
Collapse
|
26
|
Li ZY, Liu Y, Hu JJ, Xu Q, Liu LH, Jia HZ, Chen WH, Lei Q, Rong L, Zhang XZ. Stepwise-acid-active multifunctional mesoporous silica nanoparticles for tumor-specific nucleus-targeted drug delivery. ACS APPLIED MATERIALS & INTERFACES 2014; 6:14568-14575. [PMID: 25103086 DOI: 10.1021/am503846p] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In this paper, a novel stepwise-acid-active multifunctional mesoporous silica nanoparticle (MSN-(SA)TAT&(DMA)K11) was developed as a drug carrier. The MSN-(SA)TAT&(DMA)K11 is able to reverse its surface charge from negative to positive in the mildly acidic tumor extracellular environment. Then, the fast endo/lysosomal escape and subsequent nucleus targeting as well as intranuclear drug release can be realized after cellular internalization. Because of the difference in acidity between the tumor extracellular environment and that of endo/lysosomes, this multifunctional MSN-(SA)TAT&(DMA)K11 exhibits a stepwise-acid-active drug delivery with a tumor-specific nucleus-targeted property.
Collapse
Affiliation(s)
- Ze-Yong Li
- Key Laboratory of Biomedical Polymers of the Ministry of Education & Department of Chemistry, Wuhan University , Wuhan 430072, P. R. China
| | | | | | | | | | | | | | | | | | | |
Collapse
|
27
|
Wu H, Dong J, Zhan X, Yang H, Zhao Y, Zhu S, Wang G. Triple stimuli-responsive crosslinked polymeric nanoparticles for controlled release. RSC Adv 2014. [DOI: 10.1039/c4ra05661b] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
|
28
|
Preparation and characterization of cationic pH-sensitive SiO2/polymer core-shell nanoparticles with amino groups in the shell. Colloid Polym Sci 2014. [DOI: 10.1007/s00396-014-3306-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
|
29
|
Zhao Y, Ji T, Wang H, Li S, Zhao Y, Nie G. Self-assembled peptide nanoparticles as tumor microenvironment activatable probes for tumor targeting and imaging. J Control Release 2014; 177:11-9. [DOI: 10.1016/j.jconrel.2013.12.037] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2013] [Revised: 12/30/2013] [Accepted: 12/31/2013] [Indexed: 02/04/2023]
|
30
|
Low-positively charged thermosensitive copolymers as gene delivery vectors without toxic effect. J Control Release 2013. [DOI: 10.1016/j.jconrel.2013.08.291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
31
|
Mura S, Nicolas J, Couvreur P. Stimuli-responsive nanocarriers for drug delivery. NATURE MATERIALS 2013; 12:991-1003. [PMID: 24150417 DOI: 10.1038/nmat3776] [Citation(s) in RCA: 4045] [Impact Index Per Article: 367.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Accepted: 09/10/2013] [Indexed: 05/17/2023]
Abstract
Spurred by recent progress in materials chemistry and drug delivery, stimuli-responsive devices that deliver a drug in spatial-, temporal- and dosage-controlled fashions have become possible. Implementation of such devices requires the use of biocompatible materials that are susceptible to a specific physical incitement or that, in response to a specific stimulus, undergo a protonation, a hydrolytic cleavage or a (supra)molecular conformational change. In this Review, we discuss recent advances in the design of nanoscale stimuli-responsive systems that are able to control drug biodistribution in response to specific stimuli, either exogenous (variations in temperature, magnetic field, ultrasound intensity, light or electric pulses) or endogenous (changes in pH, enzyme concentration or redox gradients).
Collapse
Affiliation(s)
- Simona Mura
- Institut Galien Paris-Sud, Université Paris-Sud, UMR CNRS 8612, Faculté de Pharmacie, 5 rue Jean-Baptiste Clément, F-92296 Châtenay-Malabry Cedex, France
| | | | | |
Collapse
|
32
|
Efficient hepatic delivery of drugs: novel strategies and their significance. BIOMED RESEARCH INTERNATIONAL 2013; 2013:382184. [PMID: 24286077 PMCID: PMC3826320 DOI: 10.1155/2013/382184] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/24/2013] [Revised: 08/14/2013] [Accepted: 08/25/2013] [Indexed: 02/06/2023]
Abstract
Liver is a vital organ responsible for plethora of functions including detoxification, protein synthesis, and the production of biochemicals necessary for the sustenance of life. Therefore, patients with chronic liver diseases such as viral hepatitis, liver cirrhosis, and hepatocellular carcinoma need immediate attention to sustain life and as a result are often exposed to the prolonged treatment with drugs/herbal medications. Lack of site-specific delivery of these medications to the hepatocytes/nonparenchymal cells and adverse effects associated with their off-target interactions limit their continuous use. This calls for the development and fabrication of targeted delivery systems which can deliver the drug payload at the desired site of action for defined period of time. The primary aim of drug targeting is to manipulate the whole body distribution of drugs, that is, to prevent distribution to non-target cells and concomitantly increase the drug concentration at the targeted site. Carrier molecules are designed for their selective cellular uptake, taking advantage of specific receptors or binding sites present on the surface membrane of the target cell. In this review, various aspects of liver targeting of drug molecules and herbal medications have been discussed which elucidate the importance of delivering the drugs/herbal medications at their desired site of action.
Collapse
|
33
|
A photo-degradable gene delivery system for enhanced nuclear gene transcription. Biomaterials 2013; 35:1040-9. [PMID: 24172855 DOI: 10.1016/j.biomaterials.2013.10.030] [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: 08/03/2013] [Accepted: 10/08/2013] [Indexed: 11/21/2022]
Abstract
There currently exists a significant gap in our understanding of how the detailed chemical characteristics of polycation gene carriers influence their delivery performances in overcoming an important cellular-level transport barrier, i.e., intranuclear gene transcription. In this study, a UV-degradable gene carrier material (ENE4-1) was synthesized by crosslinking low molecular weight branched polyethylenimine (bPEI-2k) molecules using UV-cleavable o-nitrobenzyl urethane (NBU) as the linker molecule. NBU degrades upon exposure to mild UV irradiation. Therefore, this UV-degradable carrier allows us to control the chemical characteristics of the polymer/DNA complex (polyplex) particles at desired locations within the intracellular environment. By using this photolytic DNA carrier, we found that the exact timing of the UV degradation significantly influences the gene transfection efficiencies of ENE4-1/DNA(pGL2) polyplexes in HeLa cells. Interestingly, even if the polyplexes were UV-degraded at different intracellular locations/times, their nuclear entry efficiency was not influenced by the location/timing of UV degradation. The UV treatment did not influence the size or binding strength of the polyplexes. However, we confirmed that the degradation of the carrier molecules impacts the chemical characteristics of the polyplexes (it produces carbamic acid and nitrosobenzyl aldehyde groups on ENE4-1). We believe that these anionic acid groups enhance the interaction of the polyplexes with nuclear transcription proteins and thus the final gene expression levels; this effect was found to occur, even though UV irradiation itself has a general effect of reducing transfection efficiencies. Excess (uncomplexed) ENE4-1 polymers appear to not play any role in the UV-enhanced gene transcription phenomenon.
Collapse
|
34
|
Zhu L, Torchilin VP. Stimulus-responsive nanopreparations for tumor targeting. Integr Biol (Camb) 2013; 5:96-107. [PMID: 22869005 DOI: 10.1039/c2ib20135f] [Citation(s) in RCA: 159] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Nanopreparations such as liposomes, micelles, polymeric and inorganic nanoparticles, and small molecule/nucleic acid/protein conjugates have demonstrated various advantages over "naked" therapeutic molecules. These nanopreparations can be further engineered with functional moieties to improve their performance in terms of circulation longevity, targetability, enhanced intracellular penetration, carrier-mediated enhanced visualization, and stimuli-sensitivity. The idea of application of a stimulus-sensitive drug or imaging agent delivery system for tumor targeting is based on the significant abnormalities in the tumor microenvironment and its cells, such as an acidic pH, altered redox potential, up-regulated proteins and hyperthermia. These internal conditions as well as external stimuli, such as magnetic field, ultrasound and light, can be used to modify the behavior of the nanopreparations that control drug release, improve drug internalization, control the intracellular drug fate and even allow for certain physical interactions, resulting in an enhanced tumor targeting and antitumor effect. This article provides a critical view of current stimulus-sensitive drug delivery strategies and possible future directions in tumor targeting with primary focus on the combined use of stimulus-sensitivity with other strategies in the same nanopreparation, including multifunctional nanopreparations and theranostics.
Collapse
Affiliation(s)
- Lin Zhu
- Department of Pharmaceutical Sciences and Center for Pharmaceutical Biotechnology and Nanomedicine, Northeastern University, 140 The Fenway, Boston, MA 02115, USA
| | | |
Collapse
|
35
|
Yu F, Tang X, Pei M. Surface Modification of Hydroxy Carbonate Apatite Nanoparticles with PDMAEMA via Surface-initiated ATRP. CHEM LETT 2013. [DOI: 10.1246/cl.121294] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Faqi Yu
- School of Chemistry and Chemical Engineering, University of Jinan
| | - Xinde Tang
- School of Material Science and Engineering, Shandong Jiaotong University
| | - Meishan Pei
- School of Chemistry and Chemical Engineering, University of Jinan
| |
Collapse
|
36
|
Eroglu E, Tiwari PM, Waffo AB, Miller ME, Vig K, Dennis VA, Singh SR. A nonviral pHEMA+chitosan nanosphere-mediated high-efficiency gene delivery system. Int J Nanomedicine 2013; 8:1403-15. [PMID: 23610520 PMCID: PMC3629879 DOI: 10.2147/ijn.s43168] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
The transport of DNA into eukaryotic cells is minimal because of the cell membrane barrier, and this limits the application of DNA vaccines, gene silencing, and gene therapy. Several available transfection reagents and techniques have been used to circumvent this problem. Alternatively, nonviral nanoscale vectors have been shown to bypass the eukaryotic cell membrane. In the present work, we developed a unique nanomaterial, pHEMA+chitosan nanospheres (PCNSs), which consisted of poly(2-hydroxyethyl methacrylate) nanospheres surrounded by a chitosan cationic shell, and we used this for encapsulation of a respiratory syncytial virus (RSV)-F gene construct (a model for a DNA vaccine). The new nanomaterial was capable of transfecting various eukaryotic cell lines without the use of a commercial transfection reagent. Using transmission electron microscopy, (TEM), fluorescence activated cell sorting (FACS), and immunofluorescence, we clearly demonstrated that the positively charged PCNSs were able to bind to the negatively charged cell membrane and were taken up by endocytosis, in Cos-7 cells. Using quantitative polymerase chain reaction (qPCR), we also evaluated the efficiency of transfection achieved with PCNSs and without the use of a liposomal-based transfection mediator, in Cos-7, HEp-2, and Vero cells. To assess the transfection efficiency of the PCNSs in vivo, these novel nanomaterials containing RSV-F gene were injected intramuscularly into BALB/c mice, resulting in high copy number of the transgene. In this study, we report, for the first time, the application of the PCNSs as a nanovehicle for gene delivery in vitro and in vivo.
Collapse
Affiliation(s)
- Erdal Eroglu
- Center for NanoBiotechnology Research, Alabama State University, Montgomery, AL 36104, USA
| | | | | | | | | | | | | |
Collapse
|
37
|
You JO, Guo P, Auguste DT. A drug-delivery vehicle combining the targeting and thermal ablation of HER2+ breast-cancer cells with triggered drug release. Angew Chem Int Ed Engl 2013; 52:4141-6. [PMID: 23494862 PMCID: PMC5540660 DOI: 10.1002/anie.201209804] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2012] [Revised: 02/05/2013] [Indexed: 11/06/2022]
Affiliation(s)
- Jin-Oh You
- School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA
| | | | | |
Collapse
|
38
|
You JO, Guo P, Auguste DT. A Drug-Delivery Vehicle Combining the Targeting and Thermal Ablation of HER2+ Breast-Cancer Cells with Triggered Drug Release. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201209804] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|
39
|
Guo P, You JO, Yang J, Moses MA, Auguste DT. Using breast cancer cell CXCR4 surface expression to predict liposome binding and cytotoxicity. Biomaterials 2012; 33:8104-10. [PMID: 22884683 DOI: 10.1016/j.biomaterials.2012.07.043] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2012] [Accepted: 07/21/2012] [Indexed: 01/13/2023]
Abstract
The primary cause of mortality in breast cancer is tumor aggressiveness, characterized by metastases to regional lymph nodes, bone marrow, lung, and liver. C-X-C chemokine receptor type 4 (CXCR4) has been shown to mobilize breast cancer cells along chemokine gradients. Quantification of CXCR4 surface expression may predict the efficacy of anti-CXCR4 labeled liposomal therapeutics to target and kill breast cancer cells. We evaluated gene and surface receptor expression of CXCR4 on breast cancer cell lines distinguished as having low and high invasiveness, MDA-MB-175VII and HCC1500, respectively. CXCR4 surface expression did not correlate with invasiveness. MDA-MB-175VII exhibited more binding to anti-CXCR4 labeled liposomes relative to HCC1500. Increased binding correlated with greater cell death relative to IgG labeled liposomes. Quantitative cell characterization may be used to select targeted therapeutics with enhanced efficacy and minimal side effects.
Collapse
Affiliation(s)
- Peng Guo
- School of Engineering and Applied Sciences, Harvard University, 29 Oxford St., Cambridge, MA 02138, USA
| | | | | | | | | |
Collapse
|
40
|
Mo R, Sun Q, Xue J, Li N, Li W, Zhang C, Ping Q. Multistage pH-responsive liposomes for mitochondrial-targeted anticancer drug delivery. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2012; 24:3659-3665. [PMID: 22678851 DOI: 10.1002/adma.201201498] [Citation(s) in RCA: 189] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2012] [Indexed: 06/01/2023]
Abstract
Zwitterionic oligopeptide liposomes (HHG2C(18)-L) containing a smart lipid (1,5-dioctadecyl-L-glutamyl 2-histidyl-hexahydrobenzoic acid, HHG2C(18)) are developed to overcome the barriers faced by anticancer drugs on the route from the site of injection into the body to the final antitumor target within transport steps with multiple physiological and biological barriers. HHG2C(18)-L show the multistage pH-responsive to the tumor cell (the mitochondria in this case). Their multistage pH response leads to more effective entry of the tumor cell, improved escape from the endolysosomes, and accumulation at the mitochondria (see picture).
Collapse
Affiliation(s)
- Ran Mo
- Center of Drug Discovery, State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, PR China
| | | | | | | | | | | | | |
Collapse
|
41
|
Morachis JM, Mahmoud EA, Almutairi A. Physical and chemical strategies for therapeutic delivery by using polymeric nanoparticles. Pharmacol Rev 2012; 64:505-19. [PMID: 22544864 DOI: 10.1124/pr.111.005363] [Citation(s) in RCA: 163] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
A significant challenge that most therapeutic agents face is their inability to be delivered effectively. Nanotechnology offers a solution to allow for safe, high-dose, specific delivery of pharmaceuticals to the target tissue. Nanoparticles composed of biodegradable polymers can be designed and engineered with various layers of complexity to achieve drug targeting that was unimaginable years ago by offering multiple mechanisms to encapsulate and strategically deliver drugs, proteins, nucleic acids, or vaccines while improving their therapeutic index. Targeting of nanoparticles to diseased tissue and cells assumes two strategies: physical and chemical targeting. Physical targeting is a strategy enabled by nanoparticle fabrication techniques. It includes using size, shape, charge, and stiffness among other parameters to influence tissue accumulation, adhesion, and cell uptake. New methods to measure size, shape, and polydispersity will enable this field to grow and more thorough comparisons to be made. Physical targeting can be more economically viable when certain fabrication techniques are used. Chemical targeting can employ molecular recognition units to decorate the surface of particles or molecular units responsive to diseased environments or remote stimuli. In this review, we describe sophisticated nanoparticles designed for tissue-specific chemical targeting that use conjugation chemistry to attach targeting moieties. Furthermore, we describe chemical targeting using stimuli responsive nanoparticles that can respond to changes in pH, heat, and light.
Collapse
Affiliation(s)
- José M Morachis
- University of California San Diego, 9500 Gilman Dr., MC 0600, La Jolla, CA 92093-0600, USA
| | | | | |
Collapse
|
42
|
Kosmas M, Efthymiopoulos P. Conformational properties of macromolecular pyramoids and their potential use as nano-containers. J Chem Phys 2012; 136:054905. [DOI: 10.1063/1.3680860] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
43
|
Sui K, Zhao X, Wu Z, Xia Y, Liang H, Li Y. Synthesis, rapid responsive thickening, and self-assembly of brush copolymer poly(ethylene oxide)-graft-poly(N,N-dimethylaminoethyl methacrylate) in aqueous solutions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:153-160. [PMID: 22107261 DOI: 10.1021/la2031472] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Double hydrophilic brush copolymer poly(ethylene oxide)-graft-poly(N,N-dimethylaminoethyl methacrylate) (PEO-g-PDMAEMA) was successfully prepared via atom transfer radical polymerization (ATRP). We investigated the pH/thermoresponsive behaviors of PEO-g-PDMAEMA brush-shaped copolymer concentrated aqueous solutions by rheology. The observed LCST strongly decreased with increasing pH of the solutions, which was lower than that of linear block copolymer for different pH, indicating rapid thermoresponsiveness of the brush PDMAEMA chains. An unexpected shear thickening behavior was observed and could be tuned by the pH, resulting from the mobile nature and tractive force of the densely grafted hydrophobic chains of PDMAEMA at high pH. Self-assembly of the brush copolymer in a different pH and ionic strength environment was studied by transmission electron microscopy. A wormlike cylinder structure was formed at low pH. Fractals were observed for the brush copolymer aqueous solution in the presence of NaCl. The results showed that by adjusting the pH and NaCl concentration of the dispersions fractal aggregates with different topology were obtained. The observations reported here can supply a better understanding of the molecular self-assembling nature and be used to develop responsive materials with better performance.
Collapse
Affiliation(s)
- Kunyan Sui
- State Key Laboratory Cultivating Base for New Fiber Materials and Modern Textile, Department of Polymer Science and Engineering, Qingdao University, Qingdao, 266071, China.
| | | | | | | | | | | |
Collapse
|
44
|
Bertrand N, Leroux JC. The journey of a drug-carrier in the body: an anatomo-physiological perspective. J Control Release 2011; 161:152-63. [PMID: 22001607 DOI: 10.1016/j.jconrel.2011.09.098] [Citation(s) in RCA: 430] [Impact Index Per Article: 33.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2011] [Revised: 09/28/2011] [Accepted: 09/30/2011] [Indexed: 12/18/2022]
Abstract
Recent advances in chemistry and material sciences have witnessed the emergence of an increasing number of novel and complex nanosized carriers for the delivery of drugs and imaging agents. Nevertheless, this raise in complexity does not necessarily offer more efficient systems. The lack of performance experienced by several colloidal drug carriers during the preclinical and clinical development processes can be explained by inadequate pharmacokinetic/biodistribution profiles and/or unacceptable toxicities. A comprehensive understanding of the body characteristics is necessary to predict and prevent these problems from the early stages of nanomaterial conception. In this manuscript, we review and discuss the anatomical and physiological elements which must be taken into account when designing new carriers for delivery or imaging purposes. This article gives a general overview of the main organs involved in the elimination of nanosized materials and briefly summarizes the knowledge acquired over more than 30 years of research and development in the field of drug targeting.
Collapse
Affiliation(s)
- Nicolas Bertrand
- Faculty of Pharmacy, University of Montreal, PO Box 6128, Downtown Station, Montreal, QC, Canada, H3C 3J7
| | | |
Collapse
|
45
|
You JO, Rafat M, Ye GJC, Auguste DT. Nanoengineering the heart: conductive scaffolds enhance connexin 43 expression. NANO LETTERS 2011; 11:3643-8. [PMID: 21800912 DOI: 10.1021/nl201514a] [Citation(s) in RCA: 196] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Scaffolds that couple electrical and elastic properties may be valuable for cardiac cell function. However, existing conductive materials do not mimic physiological properties. We prepared and characterized a tunable, hybrid hydrogel scaffold based on Au nanoparticles homogeneously synthesized throughout a polymer templated gel. Conductive gels had Young's moduli more similar to myocardium relative to polyaniline and polypyrrole, by 1-4 orders of magnitude. Neonatal rat cardiomyocytes exhibited increased expression of connexin 43 on hybrid scaffolds relative to HEMA with or without electrical stimulation.
Collapse
Affiliation(s)
- Jin-Oh You
- School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
| | | | | | | |
Collapse
|
46
|
Low Molecular Weight pDMAEMA-block-pHEMA Block-Copolymers Synthesized via RAFT-Polymerization: Potential Non-Viral Gene Delivery Agents? Polymers (Basel) 2011. [DOI: 10.3390/polym3020693] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
|
47
|
Luo XH, Liu CW, Li ZY, Qin SY, Feng J, Zhang XZ, Zhuo RX. OEI800 polyconjugates linked with ketalized glycolic acid for use as gene vectors. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c1jm12849c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
|
48
|
You JO, Almeda D, Ye GJC, Auguste DT. Bioresponsive matrices in drug delivery. J Biol Eng 2010; 4:15. [PMID: 21114841 PMCID: PMC3002303 DOI: 10.1186/1754-1611-4-15] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2010] [Accepted: 11/29/2010] [Indexed: 02/10/2023] Open
Abstract
For years, the field of drug delivery has focused on (1) controlling the release of a therapeutic and (2) targeting the therapeutic to a specific cell type. These research endeavors have concentrated mainly on the development of new degradable polymers and molecule-labeled drug delivery vehicles. Recent interest in biomaterials that respond to their environment have opened new methods to trigger the release of drugs and localize the therapeutic within a particular site. These novel biomaterials, usually termed "smart" or "intelligent", are able to deliver a therapeutic agent based on either environmental cues or a remote stimulus. Stimuli-responsive materials could potentially elicit a therapeutically effective dose without adverse side effects. Polymers responding to different stimuli, such as pH, light, temperature, ultrasound, magnetism, or biomolecules have been investigated as potential drug delivery vehicles. This review describes the most recent advances in "smart" drug delivery systems that respond to one or multiple stimuli.
Collapse
Affiliation(s)
- Jin-Oh You
- School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA
| | - Dariela Almeda
- School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA
| | - George JC Ye
- School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA
| | - Debra T Auguste
- School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA
| |
Collapse
|
49
|
Ryu JH, Chacko RT, Jiwpanich S, Bickerton S, Babu RP, Thayumanavan S. Self-Cross-Linked Polymer Nanogels: A Versatile Nanoscopic Drug Delivery Platform. J Am Chem Soc 2010; 132:17227-35. [DOI: 10.1021/ja1069932] [Citation(s) in RCA: 449] [Impact Index Per Article: 32.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ja-Hyoung Ryu
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - Reuben T. Chacko
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - Siriporn Jiwpanich
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - Sean Bickerton
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - R. Prakash Babu
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - S. Thayumanavan
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| |
Collapse
|
50
|
Gao W, Chan JM, Farokhzad OC. pH-Responsive nanoparticles for drug delivery. Mol Pharm 2010; 7:1913-20. [PMID: 20836539 DOI: 10.1021/mp100253e] [Citation(s) in RCA: 664] [Impact Index Per Article: 47.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
First-generation nanoparticles (NPs) have been clinically translated as pharmaceutical drug delivery carriers for their ability to improve on drug tolerability, circulation half-life, and efficacy. Toward the development of the next-generation NPs, researchers have designed novel multifunctional platforms for sustained release, molecular targeting, and environmental responsiveness. This review focuses on environmentally responsive mechanisms used in NP designs, and highlights the use of pH-responsive NPs in drug delivery. Different organs, tissues, and subcellular compartments, as well as their pathophysiological states, can be characterized by their pH levels and gradients. When exposed to these pH stimuli, pH-responsive NPs respond with physicochemical changes to their material structure and surface characteristics. These include swelling, dissociating or surface charge switching, in a manner that favors drug release at the target site over surrounding tissues. The novel developments described here may revise the classical outlook that NPs are passive delivery vehicles, in favor of responsive, sensing vehicles that use environmental cues to achieve maximal drug potency.
Collapse
Affiliation(s)
- Weiwei Gao
- Laboratory of Nanomedicine and Biomaterials, Department of Anesthesiology, Brigham and Women's Hospital, Boston, Massachusetts 02115, United States
| | | | | |
Collapse
|