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Kaur J, Gulati M, Zacconi F, Dureja H, Loebenberg R, Ansari MS, AlOmeir O, Alam A, Chellappan DK, Gupta G, Jha NK, Pinto TDJA, Morris A, Choonara YE, Adams J, Dua K, Singh SK. Biomedical Applications of polymeric micelles in the treatment of diabetes mellitus: Current success and future approaches. Expert Opin Drug Deliv 2022; 19:771-793. [PMID: 35695697 DOI: 10.1080/17425247.2022.2087629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION Diabetes mellitus (DM) is the most common metabolic disease and multifactorial, harming patients worldwide. Extensive research has been carried out in the search for novel drug delivery systems offering reliable control of glucose levels for diabetics, aiming at efficient management of DM. AREAS COVERED Polymeric micelles (PMs) as smart drug delivery nanocarriers are discussed, focusing on oral drug delivery applications for the management of hyperglycemia. The most recent approaches used for the preparation of smart PMs employ molecular features of amphiphilic block copolymers (ABCs), such as stimulus sensitivity, ligand conjugation, and as a more specific example the ability to inhibit islet amyloidosis. EXPERT OPINION PMs provide a unique platform for self-regulated or spatiotemporal drug delivery, mimicking the working mode of pancreatic islets to maintain glucose homeostasis for prolonged periods. This unique characteristic is achieved by tailoring the functional chemistry of ABCs considering the physicochemical traits of PMs, including sensing capabilities, hydrophobicity, etc. In addition, the application of ABCs for the inhibition of conformational changes in islet amyloid polypeptide garnered attention as one of the root causes of DM. However, research in this field is limited and further studies at the clinical level are required.
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Affiliation(s)
- Jaskiran Kaur
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, India
| | - Monica Gulati
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, India.,Faculty of Health, Australian Research Centre in Complementary and Integrative Medicine, University of Technology Sydney, Ultimo, Australia
| | - Flavia Zacconi
- de Farmacia, Pontificia Universidad Cat´olica de ChileDepartamento de Química Org´anica, Facultad de Química y , Santiago, Chile.,Institute for Biological and Medical Engineering, Schools of Engineering, Medicine and Biological Sciences, Pontificia Universidad Cat´olica de Chile, Macul, Chile
| | - Harish Dureja
- Department of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak, India
| | - Raimar Loebenberg
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta AB, Canada
| | - Md Salahuddin Ansari
- Department of Pharmacy Practice, College of Pharmacy Aldawadmi, Shaqra University Shaqra, Saudi Arabia
| | - Othman AlOmeir
- Department of Pharmacy Practice, College of Pharmacy Aldawadmi, Shaqra University Shaqra, Saudi Arabia
| | - Aftab Alam
- Department of Pharmacognosy, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Kharj, KSA
| | - Dinesh Kumar Chellappan
- Department of Life Sciences, School of Pharmacy, International Medical University, Bukit Jalil, Malaysia
| | - Gaurav Gupta
- Department of pharmacology, School of Pharmacy, Suresh Gyan Vihar University, Jagatpura, India.,Department of Pharmacology, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India.,Uttaranchal Institute of Pharmaceutical Sciences, Uttaranchal University, Dehradun, India
| | - Niraj Kumar Jha
- Department of Biotechnology, School of Engineering & Technology (SET), Sharda University, Greater Noida, India
| | | | - Andrew Morris
- Swansea University Medical School, Swansea University, Singleton Park, Swansea
| | - Yahya E Choonara
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, University of Witwatersrand, Johannesburg, South Africa
| | - Jon Adams
- Faculty of Health, Australian Research Centre in Complementary and Integrative Medicine, University of Technology Sydney, Ultimo, Australia
| | - Kamal Dua
- Faculty of Health, Australian Research Centre in Complementary and Integrative Medicine, University of Technology Sydney, Ultimo, Australia.,Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, Ultimo, Australia
| | - Sachin Kumar Singh
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, India.,Faculty of Health, Australian Research Centre in Complementary and Integrative Medicine, University of Technology Sydney, Ultimo, Australia
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2
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Kaur J, Gulati M, Kapoor B, Jha NK, Gupta PK, Gupta G, Chellappan DK, Devkota HP, Prasher P, Ansari MS, Aba Alkhayl FF, Arshad MF, Morris A, Choonara YE, Adams J, Dua K, Singh SK. Advances in designing of polymeric micelles for biomedical application in brain related diseases. Chem Biol Interact 2022; 361:109960. [DOI: 10.1016/j.cbi.2022.109960] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 04/11/2022] [Accepted: 04/22/2022] [Indexed: 12/12/2022]
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3
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Zhang L, Zhao Q, Jiang Z, Shen J, Wu W, Liu X, Fan Q, Huang W. Recent Progress of SERS Nanoprobe for pH Detecting and Its Application in Biological Imaging. BIOSENSORS 2021; 11:282. [PMID: 34436084 PMCID: PMC8392648 DOI: 10.3390/bios11080282] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 08/05/2021] [Accepted: 08/15/2021] [Indexed: 02/07/2023]
Abstract
As pH value almost affects the function of cells and organisms in all aspects, in biology, biochemical and many other research fields, it is necessary to apply simple, intuitive, sensitive, stable detection of pH and base characteristics inside and outside the cell. Therefore, many research groups have explored the design and application of pH probes based on surface enhanced Raman scattering (SERS). In this review article, we discussed the basic theoretical background of explaining the working mechanism of pH SERS sensors, and also briefly described the significance of cell pH measurement, and simply classified and summarized the factors that affected the performance of pH SERS probes. Some applications of pH probes based on surface enhanced Raman scattering in intracellular and extracellular pH imaging and the combination of other analytical detection techniques are described. Finally, the development prospect of this field is presented.
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Affiliation(s)
- Lei Zhang
- Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications (NUPT), 9 Wenyuan Road, Nanjing 210023, China; (Q.Z.); (Z.J.); (J.S.); (X.L.); (Q.F.); (W.H.)
| | - Qianqian Zhao
- Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications (NUPT), 9 Wenyuan Road, Nanjing 210023, China; (Q.Z.); (Z.J.); (J.S.); (X.L.); (Q.F.); (W.H.)
| | - Zhitao Jiang
- Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications (NUPT), 9 Wenyuan Road, Nanjing 210023, China; (Q.Z.); (Z.J.); (J.S.); (X.L.); (Q.F.); (W.H.)
| | - Jingjing Shen
- Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications (NUPT), 9 Wenyuan Road, Nanjing 210023, China; (Q.Z.); (Z.J.); (J.S.); (X.L.); (Q.F.); (W.H.)
| | - Weibing Wu
- Jiangsu Provincial Key Lab of Pulp & Paper Science & Technology, Nanjing Forestry University, 159 Longpan Road, Nanjing 210023, China;
| | - Xingfen Liu
- Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications (NUPT), 9 Wenyuan Road, Nanjing 210023, China; (Q.Z.); (Z.J.); (J.S.); (X.L.); (Q.F.); (W.H.)
| | - Quli Fan
- Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications (NUPT), 9 Wenyuan Road, Nanjing 210023, China; (Q.Z.); (Z.J.); (J.S.); (X.L.); (Q.F.); (W.H.)
| | - Wei Huang
- Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications (NUPT), 9 Wenyuan Road, Nanjing 210023, China; (Q.Z.); (Z.J.); (J.S.); (X.L.); (Q.F.); (W.H.)
- Frontiers Science Center for Flexible Electronics (FSCFE), Shaanxi Institute of Flexible Electronics (SIFE), Northwestern Polytechnical University (NPU), 127 West Youyi Road, Xi’an 710072, China
- Frontiers Science Center for Flexible Electronics (FSCFE), Shaanxi Institute of Biomedical Materials and Engineering (SIBME), Northwestern Polytechnical University (NPU), 127 West Youyi Road, Xi’an 710072, China
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4
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Kaur J, Mishra V, Singh SK, Gulati M, Kapoor B, Chellappan DK, Gupta G, Dureja H, Anand K, Dua K, Khatik GL, Gowthamarajan K. Harnessing amphiphilic polymeric micelles for diagnostic and therapeutic applications: Breakthroughs and bottlenecks. J Control Release 2021; 334:64-95. [PMID: 33887283 DOI: 10.1016/j.jconrel.2021.04.014] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 04/12/2021] [Accepted: 04/15/2021] [Indexed: 12/15/2022]
Abstract
Amphiphilic block copolymers are widely utilized in the design of formulations owing to their unique physicochemical properties, flexible structures and functional chemistry. Amphiphilic polymeric micelles (APMs) formed from such copolymers have gained attention of the drug delivery scientists in past few decades for enhancing the bioavailability of lipophilic drugs, molecular targeting, sustained release, stimuli-responsive properties, enhanced therapeutic efficacy and reducing drug associated toxicity. Their properties including ease of surface modification, high surface area, small size, and enhanced permeation as well as retention (EPR) effect are mainly responsible for their utilization in the diagnosis and therapy of various diseases. However, some of the challenges associated with their use are premature drug release, low drug loading capacity, scale-up issues and their poor stability that need to be addressed for their wider clinical utility and commercialization. This review describes comprehensively their physicochemical properties, various methods of preparation, limitations followed by approaches employed for the development of optimized APMs, the impact of each preparation technique on the physicochemical properties of the resulting APMs as well as various biomedical applications of APMs. Based on the current scenario of their use in treatment and diagnosis of diseases, the directions in which future studies need to be carried out to explore their full potential are also discussed.
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Affiliation(s)
- Jaskiran Kaur
- School of Pharmaceutical sciences, Lovely Professional University, Jalandhar-Delhi G.T Road, Phagwara, Punjab, India
| | - Vijay Mishra
- School of Pharmaceutical sciences, Lovely Professional University, Jalandhar-Delhi G.T Road, Phagwara, Punjab, India
| | - Sachin Kumar Singh
- School of Pharmaceutical sciences, Lovely Professional University, Jalandhar-Delhi G.T Road, Phagwara, Punjab, India.
| | - Monica Gulati
- School of Pharmaceutical sciences, Lovely Professional University, Jalandhar-Delhi G.T Road, Phagwara, Punjab, India
| | - Bhupinder Kapoor
- School of Pharmaceutical sciences, Lovely Professional University, Jalandhar-Delhi G.T Road, Phagwara, Punjab, India
| | | | - Gaurav Gupta
- School of Pharmacy, Suresh Gyan Vihar University, Jagatpura Mahal Road, Jaipur, India
| | - Harish Dureja
- Department of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak, Haryana, India
| | - Krishnan Anand
- Department of Chemical Pathology, School of Pathology, Faculty of Health Sciences and National Health Laboratory Service, University of the Free State, Bloemfontein, South Africa
| | - Kamal Dua
- Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, Ultimo, NSW 2007, Australia
| | - Gopal L Khatik
- National Institute of Pharmaceutical Education and Research, Bijnor-Sisendi road, Sarojini Nagar, Lucknow, Uttar Pradesh 226301, India
| | - Kuppusamy Gowthamarajan
- Department of Pharmaceutics, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Ooty, Nilgiris, Tamil Nadu, India; Centre of Excellence in Nanoscience & Technology, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Ooty, Nilgiris, Tamil Nadu, India
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5
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Ghosh B, Biswas S. Polymeric micelles in cancer therapy: State of the art. J Control Release 2021; 332:127-147. [PMID: 33609621 DOI: 10.1016/j.jconrel.2021.02.016] [Citation(s) in RCA: 221] [Impact Index Per Article: 73.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 02/12/2021] [Accepted: 02/12/2021] [Indexed: 02/08/2023]
Abstract
In recent years, polymeric micelles have been extensively utilized in pre-clinical studies for delivering poorly soluble chemotherapeutic agents in cancer. Polymeric micelles are formed via self-assembly of amphiphilic polymers in facile manners. The wide availability of hydrophobic and, to some extent, hydrophilic polymeric blocks allow researchers to explore various polymeric combinations for optimum loading, stability, systemic circulation, and delivery to the target cancer tissues. Moreover, polymeric micelles could easily be tailor-made by increasing and decreasing the number of monomers in each polymeric chain. Some of the widely accepted hydrophobic polymers are poly(lactide) (PLA), poly(caprolactone) (PCL), poly(lactide-co-glycolide) (PLGA), polyesters, poly(amino acids), lipids. The hydrophilic polymers used to wrap the hydrophobic core are poly(ethylene glycol), poly(oxazolines), chitosan, dextran, and hyaluronic acids. Drugs could be conjugated to polymers at the distal ends to prepare pharmacologically active polymeric systems that impart enhanced solubility and stability of the conjugates and provide an opportunity for combination drug delivery. Their nano-size enables them to accumulate to the tumor microenvironment via the Enhanced Permeability and Retention (EPR) effect. Moreover, the stimuli-sensitive breakdown provides the micelles an effective means to deliver the therapeutic cargo effectively. The tumor micro-environmental stimuli are pH, hypoxia, and upregulated enzymes. Externally applied stimuli to destroy micellar disassembly to release the payload include light, ultrasound, and temperature. This article delineates the current trend in developing polymeric micelles combining various block polymeric scaffolds. The development of stimuli-sensitive micelles to achieve enhanced therapeutic activity are also discussed.
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Affiliation(s)
- Balaram Ghosh
- Nanomedicine Research Laboratory, Department of Pharmacy, Birla Institute of Technology and Science-Pilani, Hyderabad Campus, Medchal, Hyderabad 500078, India
| | - Swati Biswas
- Nanomedicine Research Laboratory, Department of Pharmacy, Birla Institute of Technology and Science-Pilani, Hyderabad Campus, Medchal, Hyderabad 500078, India.
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Méndez‐Ardoy A, Reina JJ, Montenegro J. Synthesis and Supramolecular Functional Assemblies of Ratiometric pH Probes. Chemistry 2020; 26:7516-7536. [DOI: 10.1002/chem.201904834] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 12/20/2019] [Indexed: 01/28/2023]
Affiliation(s)
- Alejandro Méndez‐Ardoy
- Centro Singular de Investigación en Química Biolóxica e, Materiais Moleculares (CIQUS)Departamento de Química OrgánicaUniversidade de Santiago de Compostela 15782 Santiago de Compostela Spain
| | - Jose J. Reina
- Centro Singular de Investigación en Química Biolóxica e, Materiais Moleculares (CIQUS)Departamento de Química OrgánicaUniversidade de Santiago de Compostela 15782 Santiago de Compostela Spain
| | - Javier Montenegro
- Centro Singular de Investigación en Química Biolóxica e, Materiais Moleculares (CIQUS)Departamento de Química OrgánicaUniversidade de Santiago de Compostela 15782 Santiago de Compostela Spain
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7
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Phosphatidylserine targeting peptide-functionalized pH sensitive mixed micelles for enhanced anti-tumor drug delivery. Eur J Pharm Biopharm 2019; 147:87-101. [PMID: 31899369 DOI: 10.1016/j.ejpb.2019.12.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 12/17/2019] [Accepted: 12/20/2019] [Indexed: 01/28/2023]
Abstract
In recent decades, targeted drug delivery systems (TDDS) have been widely used as an ideal method of improving therapeutic effects and reducing systemic side effects of chemotherapeutic agents. Historically, a handful of methods have been developed to further improve the targeting ability of delivery systems. Thus, in this study, two methods, taking advantage of tumor characteristics, were used for the creation of a multi-targeted delivery system. The first was the fabrication of pH-sensitive micelles, lending the ability to increase drug release by exploiting the acidic tumor environment. The second method was through utilization of the surface-exposed phosphatidylserine (PS) of tumors, which is normally found in the inner leaflet in healthy cells. Using PS as a target site, PS binding peptide (PSBP-6) was conjugated to pH-sensitive mixed micelles, (consisting of poly (ethylene glycol)-b-poly (D, L-lactide) (PEG-PDLLA) and poly (ethylene glycol)-b-poly (L-histidine) (PEG-PHIS)). After successful preparation of micelles, paclitaxel (PTX), a common chemotherapeutic agent, was selected to measure drug loading capacity and encapsulation efficiency, showing 7.9% and 83.5%, respectively. The in vitro release of PTX from mixed micelles at pH 5.0, 6.5, and 7.4 was 78.1, 56.8, and 51.4%, respectively, indicating acid-triggered drug release. The PSBP-6-modified, mixed micelles exhibited significantly enhanced in vitro cytotoxicity and demonstrated more efficient cellular uptake compared to unmodified mixed micelles in the HeLa cell line. Moreover, pharmacokinetic, in vivo biodistribution, and fluorescence imaging studies showed that PSBP-6-PEG-PDLLA/PEG-PHIS mixed micelles provide prolonged time in blood circulation and enhanced tumor accumulation. These results suggest that the use of PS as a novel targeting site is advantageous, and that these new multi-targeted mixed micelles show great potential for realization of broad prospects in the targeted treatment of tumors for chemotherapeutic delivery.
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8
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Hong W, Guan S, Zhang Q, Bao J, Dai H, Liu L, Li W, Kong W, Hu R, Tang J. A G2/M-phase specific drug delivery system based on increased exposure of phosphatidylethanolamine on mitotic cancer cells and low pH in tumor tissues. J Drug Deliv Sci Technol 2019. [DOI: 10.1016/j.jddst.2019.04.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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9
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Triggered doxorubicin release using redox-sensitive hyaluronic acid-g-stearic acid micelles for targeted cancer therapy. Carbohydr Polym 2019; 209:161-171. [DOI: 10.1016/j.carbpol.2019.01.018] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Revised: 12/28/2018] [Accepted: 01/07/2019] [Indexed: 12/31/2022]
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10
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Bai L, Wang X, Zhang K, Tan X, Zhang Y, Xie W. Etchable SERS nanosensor for accurate pH and hydrogen peroxide sensing in living cells. Chem Commun (Camb) 2019; 55:12996-12999. [DOI: 10.1039/c9cc06485k] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
“Turning off” extracellular SERS signals for accurate pH and hydrogen peroxide sensing in living cells.
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Affiliation(s)
- Lu Bai
- Key Laboratory of Advanced Energy Materials Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Xiaojie Wang
- Medical School of Nankai University
- Tianjin 300071
- China
| | - Kaifu Zhang
- Key Laboratory of Advanced Energy Materials Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Xiaoyue Tan
- Medical School of Nankai University
- Tianjin 300071
- China
| | - Yuying Zhang
- Medical School of Nankai University
- Tianjin 300071
- China
| | - Wei Xie
- Key Laboratory of Advanced Energy Materials Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
- China
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11
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Cancer-specific pro-oxidant therapy using low-toxic polypeptide micelles encapsulating piperlongumine. J IND ENG CHEM 2018. [DOI: 10.1016/j.jiec.2018.01.040] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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12
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Abadjian MCZ, Edwards WB, Anderson CJ. Imaging the Tumor Microenvironment. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 1036:229-257. [PMID: 29275475 DOI: 10.1007/978-3-319-67577-0_15] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The tumor microenvironment consists of tumor, stromal, and immune cells, as well as extracellular milieu. Changes in numbers of these cell types and their environments have an impact on cancer growth and metastasis. Non-invasive imaging of aspects of the tumor microenvironment can provide important information on the aggressiveness of the cancer, whether or not it is metastatic, and can also help to determine early response to treatment. This chapter provides an overview on non-invasive in vivo imaging in humans and mouse models of various cell types and physiological parameters that are unique to the tumor microenvironment. Current clinical imaging and research investigation are in the areas of nuclear imaging (positron emission tomography (PET) and single photon emission computed tomography (SPECT)), magnetic resonance imaging (MRI) and optical (near infrared (NIR) fluorescence) imaging. Aspects of the tumor microenvironment that have been imaged by PET, MRI and/or optical imaging are tumor associated inflammation (primarily macrophages and T cells), hypoxia, pH changes, as well as enzymes and integrins that are highly prevalent in tumors, stroma and immune cells. Many imaging agents and strategies are currently available for cancer patients; however, the investigation of novel avenues for targeting aspects of the tumor microenvironment in pre-clinical models of cancer provides the cancer researcher with a means to monitor changes and evaluate novel treatments that can be translated into the clinic.
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Affiliation(s)
| | - W Barry Edwards
- Department of Radiology, University of Pittsburgh, Pittsburgh, PA, USA
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA
| | - Carolyn J Anderson
- Department of Medicine, University of Pittsburgh, Pittsburgh, PA, USA.
- Department of Radiology, University of Pittsburgh, Pittsburgh, PA, USA.
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA.
- Department of Pharmacology & Chemical Biology, University of Pittsburgh, Pittsburgh, PA, USA.
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13
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Nehilla BJ, Hill JJ, Srinivasan S, Chen YC, Schulte TH, Stayton PS, Lai JJ. A Stimuli-Responsive, Binary Reagent System for Rapid Isolation of Protein Biomarkers. Anal Chem 2016; 88:10404-10410. [PMID: 27686335 PMCID: PMC6750004 DOI: 10.1021/acs.analchem.6b01961] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Magnetic microbeads exhibit rapid separation characteristics and are widely employed for biomolecule and cell isolations in research laboratories, clinical diagnostics assays, and cell therapy manufacturing. However, micrometer particle diameters compromise biomarker recognition, which leads to long incubation times and significant reagent demands. Here, a stimuli-responsive binary reagent system is presented that combines the nanoscale benefits of efficient biomarker recognition and the microscale benefits of rapid magnetic separation. This system comprises magnetic nanoparticles and polymer-antibody (Ab) conjugates that transition from hydrophilic nanoscale reagents to microscale aggregates in response to temperature stimuli. The binary reagent system was benchmarked against Ab-labeled Dynabeads in terms of biomarker isolation kinetics, assay speed, and reagent needs. Surface plasmon resonance (SPR) measurements showed that polymer conjugation did not significantly alter the Ab's binding affinity or kinetics. ELISA analysis showed that the unconjugated Ab, polymer-Ab conjugates, and Ab-labeled Dynabeads exhibited similar equilibrium dissociation constants (Kd), ∼2 nM. However, the binary reagent system isolated HIV p24 antigen from spiked serum specimens (150 pg/mL) much more quickly than Dynabeads, which resulted in shorter binding times by tens of minutes, or about 30-50% shorter overall assay times. The binary reagent system showed improved performance because the Ab molecules were not conjugated to large, solid microparticle surfaces. This stimuli-responsive binary reagent system illustrates the potential advantages of nanoscale reagents in molecule and cell isolations for both research and clinical applications.
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Affiliation(s)
| | - John J. Hill
- Department of Bioengineering, University of Washington, Seattle, WA 98195
| | - Selvi Srinivasan
- Department of Bioengineering, University of Washington, Seattle, WA 98195
| | - Yen-Chi Chen
- Department of Bioengineering, University of Washington, Seattle, WA 98195
| | - Thomas H. Schulte
- Department of Bioengineering, University of Washington, Seattle, WA 98195
| | - Patrick S. Stayton
- Department of Bioengineering, University of Washington, Seattle, WA 98195
| | - James J. Lai
- Department of Bioengineering, University of Washington, Seattle, WA 98195
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14
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Zhang CY, Chen Q, Wu WS, Guo XD, Cai CZ, Zhang LJ. Synthesis and evaluation of cholesterol-grafted PEGylated peptides with pH-triggered property as novel drug carriers for cancer chemotherapy. Colloids Surf B Biointerfaces 2016; 142:55-64. [DOI: 10.1016/j.colsurfb.2016.02.025] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Revised: 01/22/2016] [Accepted: 02/09/2016] [Indexed: 12/17/2022]
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15
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Yu ZP, Ma CH, Wang Q, Liu N, Yin J, Wu ZQ. Polyallene-block-polythiophene-block-polyallene Copolymers: One-Pot Synthesis, Helical Assembly, and Multiresponsiveness. Macromolecules 2016. [DOI: 10.1021/acs.macromol.5b02759] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Zhi-Peng Yu
- Department
of Polymer Science
and Engineering, School of Chemistry and Chemical Engineering, and
Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei University of Technology, Hefei 230009, China
| | - Cui-Hong Ma
- Department
of Polymer Science
and Engineering, School of Chemistry and Chemical Engineering, and
Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei University of Technology, Hefei 230009, China
| | - Qian Wang
- Department
of Polymer Science
and Engineering, School of Chemistry and Chemical Engineering, and
Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei University of Technology, Hefei 230009, China
| | - Na Liu
- Department
of Polymer Science
and Engineering, School of Chemistry and Chemical Engineering, and
Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei University of Technology, Hefei 230009, China
| | - Jun Yin
- Department
of Polymer Science
and Engineering, School of Chemistry and Chemical Engineering, and
Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei University of Technology, Hefei 230009, China
| | - Zong-Quan Wu
- Department
of Polymer Science
and Engineering, School of Chemistry and Chemical Engineering, and
Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei University of Technology, Hefei 230009, China
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16
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Ma Y, Li J, Hou S, Zhang J, Shi Z, Jiang T, Wei X. pH-Sensitive perylene tetra-(alkoxycarbonyl) probes for live cell imaging. NEW J CHEM 2016. [DOI: 10.1039/c6nj00153j] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel perylene pH probe for imaging of living cells in neutral to weak basic pH changes.
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Affiliation(s)
- Yongshan Ma
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Shandong Normal University
- Jinan 250014
| | - Jiaofu Li
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Shandong Normal University
- Jinan 250014
| | - Shuguo Hou
- School of Municipal and Environmental Engineering
- Shandong Jianzhu University
- Jinan 250101
- P. R. China
- Co-Innovation Center of Green Building
| | - Jinfeng Zhang
- School of Municipal and Environmental Engineering
- Shandong Jianzhu University
- Jinan 250101
- P. R. China
| | - Zhiqiang Shi
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Shandong Normal University
- Jinan 250014
| | - Tianyi Jiang
- School of Municipal and Environmental Engineering
- Shandong Jianzhu University
- Jinan 250101
- P. R. China
- Co-Innovation Center of Green Building
| | - Xiaofeng Wei
- School of Municipal and Environmental Engineering
- Shandong Jianzhu University
- Jinan 250101
- P. R. China
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Yan L, Li X. Biodegradable Stimuli-Responsive Polymeric Micelles for Treatment of Malignancy. Curr Pharm Biotechnol 2016; 17:227-36. [PMID: 26873075 PMCID: PMC5973479 DOI: 10.2174/138920101703160206142821] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Revised: 04/10/2015] [Accepted: 07/20/2015] [Indexed: 01/26/2023]
Abstract
In the past decade, drug delivery systems that can respond to the tumor microenvironment or external stimuli have emerged as promising platforms for treating malignancies due to their improved antitumor efficacy and reduced side effects. In particular, biodegradable polymeric micelles have attracted increasing attention and been rapidly developed as a distinct therapeutic to overcome limitations of conventional chemotherapeutic anticancer drugs. Because of their advantages with respect to biocompatibility, degradability, circulation time, and tumor accumulation, considerable effort has been dedicated to the developing and optimizing micellar systems during the past few years. This review highlights recent advances concerning stimuli-responsive micelles made of biodegradable polypeptide and polyester as nanocarries for drug delivery, and especially limits the content to pH sensitive, redox sensitive, and photo-sensitive micellar systems for safe and efficient cancer chemotherapy.
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Affiliation(s)
| | - Xingde Li
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD 21205, USA.
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18
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Enhanced anti-tumor efficacy and safety profile of tumor microenvironment-responsive oncolytic adenovirus nanocomplex by systemic administration. Acta Biomater 2015; 28:86-98. [PMID: 26365317 DOI: 10.1016/j.actbio.2015.09.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Revised: 08/29/2015] [Accepted: 09/09/2015] [Indexed: 02/04/2023]
Abstract
Oncolytic adenovirus (Ad) holds great promise as a potential gene therapy for cancer. However, intravenously administered Ad may encounter difficulties due to unfavorable host responses, non-specific interactions, and the heterogeneity of the tumor cell population. As an approach to combine the advantages of oncolytic Ad and synthetic polymers and to address the associated difficulties, Ad was physically complexed with a pH-sensitive block copolymer, methoxy poly(ethylene glycol)-b-poly(l-histidine) (mPEG-b-pHis). The in vitro transduction efficiency at an acidic extracellular pH was remarkably enhanced in cancer cells when treated with the Ad expressing green fluorescent protein (GFP) coated with mPEG-b-pHis (c-dE1/GFP) as compared to that of naked Ad (n-dE1/GFP). Time-lapse total internal reflection fluorescence microscopic imaging revealed a significantly enhanced cellular uptake rate of c-dE1/GFP at acidic tumor pH when compared with that at neutral pH or naked cognate Ad (n-dE1/GFP). In addition, c-dE1/GFP remained relatively stable in human serum-containing media, and considerably reduced both the innate and adaptive immune response against Ad. Moreover, the therapeutic efficacy and survival benefit of mPEG-b-pHis-complexed oncolytic Ad (c-H5mT/Luc) by systemic treatment was significantly enhanced compared to that with naked oncolytic Ad (n-H5mT/Luc) in both coxsackie and adenovirus receptor-positive and -negative tumors. Whole-body bioluminescence imaging showed 7.3-fold higher luciferase expression at the tumor site and 23.0-fold less luciferase expression in liver tissue for c-H5mT/Luc relative to that for naked oncolytic Ad (n-H5mT/Luc). Considering the heterogeneity of tumor tissue, these results are important for guiding the development of more potent and specific treatment of devastating metastatic cancers using this viral system. STATEMENT OF SIGNIFICANCE Although adenoviral systems have shown considerable promise and undergone extensive evaluation attempts to specifically target Ad vectors to cancer cells have met limited success. This shortcoming is due to the strong immune response stimulated by Ad and the hepatotoxicity of the viral particles. To overcome restricted vector issues, we generated Ad/mPEG-b-pHis for tumor microenvironment-targeting hybrid vector systems, an oncolytic Ad coated with a pH-responsive polymer, mPEG-b-pHis. The Ad/mPEG-b-pHis exhibited pH-dependent transduction efficiency and cancer-cell killing effects. Moreover, systemic administration of oncolytic Ad/mPEG-b-pHis led to marked suppression of tumor growth and tumor-specific viral replication. Ad successfully avoided the innate and adaptive immune responses and liver accumulation with the help of mPEG-b-pHis on its surface.
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19
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Sun Y, Li Y, Nan S, Zhang L, Huang H, Wang J. Synthesis and characterization of pH-sensitive poly(itaconic acid)–poly(ethylene glycol)–folate–poly(l-histidine) micelles for enhancing tumor therapy and tunable drug release. J Colloid Interface Sci 2015. [DOI: 10.1016/j.jcis.2015.07.008] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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20
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Johnson RP, Uthaman S, John JV, Lee HR, Lee SJ, Park H, Park IK, Suh H, Kim I. Poly(PEGA)-b-poly(L-lysine)-b-poly(L-histidine) Hybrid Vesicles for Tumoral pH-Triggered Intracellular Delivery of Doxorubicin Hydrochloride. ACS APPLIED MATERIALS & INTERFACES 2015; 7:21770-21779. [PMID: 26375278 DOI: 10.1021/acsami.5b05338] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A series of poly(ethylene glycol) methyl ether acrylate-block-poly(L-lysine)-block-poly(L-histidine) [p(PEGA)30-b-p(Lys)25-b-p(His)n] (n = 25, 50, 75, 100) triblock copolypeptides were designed and synthesized for tumoral pH-responsive intracellular release of anticancer drug doxorubicin hydrochloride (Dox). The tumoral acidic pH-responsive hybrid vesicles fabricated were stable at physiological pH 7.4 and could gradually destabilize in acidic pH as a result of pH-induced swelling of the p(His) block. The blank vesicles were nontoxic over a wide concentration range (0.01-100 μg/mL) in normal cell lines. The tumor acidic pH responsiveness of these vesicles was exploited for intracellular delivery of Dox. Vesicles efficiently encapsulated Dox, and pH-induced destabilization resulted in the controlled and sustained release of Dox in CT26 murine cancer cells, and dose-dependent cytotoxicity. The tumor-specific controlled release Dox from vesicles demonstrates this system represents a promising theranostic agent for tumor-targeted delivery.
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Affiliation(s)
| | - Saji Uthaman
- Department of Biomedical Science and BK 21 PLUS Center for Creative Biomedical Scientists, Chonnam National University Medical School , 160 Baekseo-ro, Gwangju, 501-746, Republic of Korea
| | | | | | - Sang Joon Lee
- Department of Biomedical Science and BK 21 PLUS Center for Creative Biomedical Scientists, Chonnam National University Medical School , 160 Baekseo-ro, Gwangju, 501-746, Republic of Korea
| | | | - In-Kyu Park
- Department of Biomedical Science and BK 21 PLUS Center for Creative Biomedical Scientists, Chonnam National University Medical School , 160 Baekseo-ro, Gwangju, 501-746, Republic of Korea
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21
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van Duijnhoven SMJ, Robillard MS, Langereis S, Grüll H. Bioresponsive probes for molecular imaging: concepts and in vivo applications. CONTRAST MEDIA & MOLECULAR IMAGING 2015; 10:282-308. [PMID: 25873263 DOI: 10.1002/cmmi.1636] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2014] [Revised: 01/24/2015] [Accepted: 02/03/2015] [Indexed: 12/30/2022]
Abstract
Molecular imaging is a powerful tool to visualize and characterize biological processes at the cellular and molecular level in vivo. In most molecular imaging approaches, probes are used to bind to disease-specific biomarkers highlighting disease target sites. In recent years, a new subset of molecular imaging probes, known as bioresponsive molecular probes, has been developed. These probes generally benefit from signal enhancement at the site of interaction with its target. There are mainly two classes of bioresponsive imaging probes. The first class consists of probes that show direct activation of the imaging label (from "off" to "on" state) and have been applied in optical imaging and magnetic resonance imaging (MRI). The other class consists of probes that show specific retention of the imaging label at the site of target interaction and these probes have found application in all different imaging modalities, including photoacoustic imaging and nuclear imaging. In this review, we present a comprehensive overview of bioresponsive imaging probes in order to discuss the various molecular imaging strategies. The focus of the present article is the rationale behind the design of bioresponsive molecular imaging probes and their potential in vivo application for the detection of endogenous molecular targets in pathologies such as cancer and cardiovascular disease.
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Affiliation(s)
- Sander M J van Duijnhoven
- Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands.,Department of Minimally Invasive Healthcare, Philips Research, Eindhoven, The Netherlands
| | - Marc S Robillard
- Department of Minimally Invasive Healthcare, Philips Research, Eindhoven, The Netherlands
| | - Sander Langereis
- Department of Minimally Invasive Healthcare, Philips Research, Eindhoven, The Netherlands
| | - Holger Grüll
- Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands.,Department of Minimally Invasive Healthcare, Philips Research, Eindhoven, The Netherlands
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22
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Hrubý M, Filippov SK, Štěpánek P. Smart polymers in drug delivery systems on crossroads: Which way deserves following? Eur Polym J 2015. [DOI: 10.1016/j.eurpolymj.2015.01.016] [Citation(s) in RCA: 97] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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23
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Xu J, Zeng F, Wu H, Hu C, Wu S. Enhanced Photodynamic Efficiency Achieved via a Dual-Targeted Strategy Based on Photosensitizer/Micelle Structure. Biomacromolecules 2014; 15:4249-59. [DOI: 10.1021/bm501270e] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Jiangsheng Xu
- College of Materials Science
and Engineering, State Key Laboratory of Luminescent Materials and
Devices, South China University of Technology, Guangzhou 510640, China
| | - Fang Zeng
- College of Materials Science
and Engineering, State Key Laboratory of Luminescent Materials and
Devices, South China University of Technology, Guangzhou 510640, China
| | - Hao Wu
- College of Materials Science
and Engineering, State Key Laboratory of Luminescent Materials and
Devices, South China University of Technology, Guangzhou 510640, China
| | - Caiping Hu
- College of Materials Science
and Engineering, State Key Laboratory of Luminescent Materials and
Devices, South China University of Technology, Guangzhou 510640, China
| | - Shuizhu Wu
- College of Materials Science
and Engineering, State Key Laboratory of Luminescent Materials and
Devices, South China University of Technology, Guangzhou 510640, China
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24
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Hu J, Liu G, Wang C, Liu T, Zhang G, Liu S. Spatiotemporal Monitoring Endocytic and Cytosolic pH Gradients with Endosomal Escaping pH-Responsive Micellar Nanocarriers. Biomacromolecules 2014; 15:4293-301. [DOI: 10.1021/bm501296d] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Jinming Hu
- CAS Key Laboratory of Soft
Matter Chemistry, Hefei National Laboratory for Physical Sciences
at the Microscale, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Guhuan Liu
- CAS Key Laboratory of Soft
Matter Chemistry, Hefei National Laboratory for Physical Sciences
at the Microscale, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Cheng Wang
- CAS Key Laboratory of Soft
Matter Chemistry, Hefei National Laboratory for Physical Sciences
at the Microscale, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Tao Liu
- CAS Key Laboratory of Soft
Matter Chemistry, Hefei National Laboratory for Physical Sciences
at the Microscale, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Guoying Zhang
- CAS Key Laboratory of Soft
Matter Chemistry, Hefei National Laboratory for Physical Sciences
at the Microscale, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Shiyong Liu
- CAS Key Laboratory of Soft
Matter Chemistry, Hefei National Laboratory for Physical Sciences
at the Microscale, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
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25
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Du Y, Yang D, Sun S, Zhao Z, Tang D. Preparation of pH‐stimuli‐responsive PEG–TGA/TGH‐capped CdTe QDs and their application in cell labeling. LUMINESCENCE 2014; 30:519-25. [DOI: 10.1002/bio.2770] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2014] [Revised: 08/07/2014] [Accepted: 08/12/2014] [Indexed: 01/01/2023]
Affiliation(s)
- Yan Du
- Jiangsu Key Laboratory of New Drug Research and Clinical PharmacyXuzhou Medical College Xuzhou Jiangsu 221004 China
| | - Dongzhi Yang
- Jiangsu Key Laboratory of New Drug Research and Clinical PharmacyXuzhou Medical College Xuzhou Jiangsu 221004 China
- Department of Pharmaceutical AnalysisXuzhou Medical College Xuzhou Jiangsu 221004 China
| | - Shian Sun
- Xuzhou Air Force College Xuzhou Jiangsu 221000 China
| | - Ziming Zhao
- Jiangsu Key Laboratory of New Drug Research and Clinical PharmacyXuzhou Medical College Xuzhou Jiangsu 221004 China
| | - Daoquan Tang
- Jiangsu Key Laboratory of New Drug Research and Clinical PharmacyXuzhou Medical College Xuzhou Jiangsu 221004 China
- Department of Pharmaceutical AnalysisXuzhou Medical College Xuzhou Jiangsu 221004 China
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26
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Self-assembled pH-responsive hyaluronic acid-g-poly((L)-histidine) copolymer micelles for targeted intracellular delivery of doxorubicin. Acta Biomater 2014; 10:2024-35. [PMID: 24365705 DOI: 10.1016/j.actbio.2013.12.025] [Citation(s) in RCA: 129] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Revised: 12/05/2013] [Accepted: 12/13/2013] [Indexed: 01/01/2023]
Abstract
Hyaluronic acid (HA) was conjugated with hydrophobic poly(l-histidine) (PHis) to prepare a pH-responsive and tumor-targeted copolymer, hyaluronic acid-g-poly(l-histidine) (HA-PHis), for use as a carrier for anti-cancer drugs. The effect of the degree of substitution (DS) on the pH-responsive behaviour of HA-PHis copolymer micelles was confirmed by studies of particles of different sizes. In vitro drug release studies demonstrated that doxorubicin (DOX) was released from HA-PHis micelles in a pH-dependent manner. In vitro cytotoxicity assays showed that all the blank micelles were nontoxic. However, MTT assay against Michigan Cancer Foundation-7 (MCF-7) cells (overexpressed CD44 receptors) showed that DOX-loaded micelles with a low PHis DS were highly cytotoxic. Cellular uptake experiments revealed that these pH-responsive HA-PHis micelles taken up in great amounts by receptor-mediated endocytosis and DOX were efficiently delivered into cytosol. Moreover, micelles with the lowest DS exhibited the highest degree of cellular uptake, which indicated that the micelles were internalized into cells via CD44 receptor-mediated endocytosis and the carboxylic groups of HA are the active binding sites for CD44 receptors. Endocytosis inhibition experiments and confocal images demonstrated that HA-PHis micelles were internalized into cells mainly via clathrin-mediated endocytosis and delivered to lysosomes, triggering release of DOX into the cytoplasm. These results confirm that the biocompatible pH-responsive HA-PHis micelles are a promising nanosystem for the intracellular targeted delivery of DOX.
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27
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Johnson RP, John JV, Kim I. Poly(l-histidine)-containing polymer bioconjugate hybrid materials as stimuli-responsive theranostic systems. J Appl Polym Sci 2014. [DOI: 10.1002/app.40796] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Renjith P. Johnson
- BK 21 PLUS Center for Advanced Chemical Technology, Department of Polymer Science and Engineering; Pusan National University; Pusan Republic of Korea
| | - Johnson V. John
- BK 21 PLUS Center for Advanced Chemical Technology, Department of Polymer Science and Engineering; Pusan National University; Pusan Republic of Korea
| | - Il Kim
- BK 21 PLUS Center for Advanced Chemical Technology, Department of Polymer Science and Engineering; Pusan National University; Pusan Republic of Korea
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28
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Liu Y, Feng L, Liu T, Zhang L, Yao Y, Yu D, Wang L, Zhang N. Multifunctional pH-sensitive polymeric nanoparticles for theranostics evaluated experimentally in cancer. NANOSCALE 2014; 6:3231-3242. [PMID: 24500240 DOI: 10.1039/c3nr05647c] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A multifunctional pH-sensitive polymeric nanoparticle system was developed for simultaneous tumor magnetic resonance imaging (MRI) and therapy. The nanoparticles were self-assembled using the multi-block polymer poly(lactic acid)-poly(ethylene glycol)-poly(l-lysine)-diethylenetriamine pentaacetic acid (PLA-PEG-PLL-DTPA) and the pH-sensitive material poly(l-histidine)-poly(ethylene glycol)-biotin (PLH-PEG-biotin). The anti-hepatocellular carcinoma (HCC) drug sorafenib was encapsulated inside the nanoparticles. Gd ions were chelated to the DTPA groups which were distributed on the nanoparticle surface. Biotinylated vascular endothelial growth factor receptor (VEGFR) antibodies were linked to the surface biotin groups of nanoparticles through the avidin linker to form the target pH-sensitive theranostic nanoparticles (TPTN). TPTN exhibited spherical or ellipsoidal shapes, uniform particle size distribution (181.4 ± 3.4 nm), positive zeta potential (14.95 ± 0.60 mV), high encapsulation efficiency (95.02 ± 1.47%) and drug loading (2.38 ± 0.04%). The pH-sensitive sorafenib release from TPTN was observed under different pH values (47.81% at pH = 7.4 and 99.32% at pH = 5.0, respectively). In cell cytotoxicity studies, TPTN showed similar antitumor effect against HepG2 cells compared to solubilized sorafenib solution after pre-incubation in acid PBS (pH = 5.0) for 1 h in vitro (P > 0.05). In in vivo anti-tumor studies, TPTN showed significantly higher antitumor effect in H22 tumor (VEGFR overexpressed cell line) bearing mice compared to the solubilized sorafenib solution (oral or i.v. administration) group (P < 0.05). In the MRI test, the T1 relaxivity value of TPTN was 17.300 mM(-1) s(-1) which was 3.6 times higher than Magnevist® (r1 = 4.8 mM(-1) s(-1)). As a positive contrast agent, TPTN exhibited higher resolution and longer imaging time (more than 90 min) in the MRI diagnosis of tumor-bearing mice compared to Magnevist® (more than 60 min). Furthermore, histological examination of TBN (blank TPTN, without sorafenib loaded) showed no visible tissue toxicity compared to normal saline. Thus, TPTN possessed dual-loading drugs and imaging agents, active targeting and pH-triggered drug release properties in one platform with good biocompatibility. All of these results indicated that TPTN was a promising theranostic carrier which could be a platform for the development of novel multifunctional theranostic agents.
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Affiliation(s)
- Yongjun Liu
- School of Pharmaceutical Science, Shandong University, Jinnan, People's Republic of China.
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29
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Kim KS, Park W, Hu J, Bae YH, Na K. A cancer-recognizable MRI contrast agents using pH-responsive polymeric micelle. Biomaterials 2014; 35:337-43. [DOI: 10.1016/j.biomaterials.2013.10.004] [Citation(s) in RCA: 133] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2013] [Accepted: 10/01/2013] [Indexed: 02/07/2023]
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Abstract
Drug-delivery system responses to stimuli have been well investigated recently. As pH decrease is observed in most solid tumors, drug-delivery systems responsive to the slightly acidic extracellular pH environment of solid tumors have been developed as a general strategy for tumor targeting. Drug vehicles that are sensitive to acidic endosome/lysosome pH have been constructed for efficient drug release in tumor cells. This review explains the mechanisms of acidic pH in the tumor microenvironment and endocytic-related organelles, endosomes and lysosomes. Nanoparticle responses to acidic extracellular pH are discussed, along with approaches for improving tumor-specific therapy. Endosome/lysosome pH-triggered vehicles are reviewed, which achieve rapid drug release in tumor cells and overcome multidrug resistance.
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31
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pH-responsive micelles composed of poly(ethylene glycol) and cholesterol-modified poly(monomethyl itaconate) as a nanocarrier for controlled and targeted release of piroxicam. JOURNAL OF POLYMER RESEARCH 2013. [DOI: 10.1007/s10965-013-0295-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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32
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Zhu L, Smith PP, Boyes SG. pH-responsive polymers for imaging acidic biological environments in tumors. ACTA ACUST UNITED AC 2013. [DOI: 10.1002/polb.23302] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Liping Zhu
- Department of Chemistry and Geochemistry; Colorado School of Mines, Golden; Colorado 80401
| | - Patrizia P. Smith
- Department of Chemistry and Geochemistry; Colorado School of Mines, Golden; Colorado 80401
| | - Stephen G. Boyes
- Department of Chemistry and Geochemistry; Colorado School of Mines, Golden; Colorado 80401
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Extracellular delivery of modified oligonucleotide and superparamagnetic iron oxide nanoparticles from a degradable hydrogel triggered by tumor acidosis. Biomaterials 2013; 34:4387-93. [PMID: 23478033 DOI: 10.1016/j.biomaterials.2013.02.058] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2013] [Accepted: 02/20/2013] [Indexed: 12/30/2022]
Abstract
Chemically modified antisense RNA oligonucleotides (antagomir) offer promise for cancer therapies but suffer from poor therapeutic effect after systemic administration. Chemical modification or loading in degradable hydrogels can offer improvements in the accuracy and efficacy for sustained delivery at specific sites. In our approach, antagomir were entrapped with degradable poly(ethylene glycol) (PEG)-based hydrogels, with and without incorporation of imidazole. Superparamagnetic iron oxide nanoparticles (SPION) were simultaneously loaded with intent for magnetic resonance imaging (MRI). The incorporation of imidazole into the PEG hydrogels led to a tunable-pH-response that dictated hydrogel swelling ratio and release rate of antagomir and SPION. As a result, the PEG-imidazole hydrogel swelling ratio and degradation over a 5 week period changed up to 734% and 149% as the pH dropped from 7.4 to 6.7, respectively. The swelling ratio of PEG-imidazole hydrogels was completely reversible over repeatable cycles of pH change. The stimuli-responsive behavior of PEG-imidazole hydrogels was used for the release of antagomir and SPION under conditions consistent with tumor acidosis. This manuscript demonstrates feasibility in designing tunable-pH-responsive hydrogels for loading multimodality therapeutic and contrast agents to enhance the bioactivity of chemically modified antisense RNA oligonucleotide and SPION for acidosis-related tumor therapy and MRI imaging applications.
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