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Saddam Hussain M, Khetan R, Clulow AJ, Ganesan R, MacMillan A, Robinson N, Ahmed-Cox A, Krasowska M, Albrecht H, Blencowe A. Teaching an Old Dog New Tricks: A Global Approach to Enhancing the Cytotoxicity of Drug-Loaded, Non-responsive Micelles Using Oligoelectrolytes. ACS APPLIED MATERIALS & INTERFACES 2024; 16:9736-9748. [PMID: 38349780 DOI: 10.1021/acsami.3c16551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/15/2024]
Abstract
Polymeric micelles have been extensively studied as vectors for the delivery of hydrophobic drugs for the treatment of cancers and other diseases. Despite intensive research, few formulations provide significant benefits, and even fewer have been clinically approved. While many traditional non-responsive micelles have excellent safety profiles, they lack the ability to respond to the intracellular environment and release their cargo in a spatiotemporally defined manner to effectively deliver large doses of cytotoxic drugs into the cytosol of cells that overwhelm efflux pumps. As a novel and adaptable strategy, we hypothesized that well-established non-responsive polymeric micelles could be augmented with a pH-trigger via the co-encapsulation of cytocompatible oligoelectrolytes, which would allow rapid cargo release in the endosome, leading to increased cytotoxicity. Herein, we demonstrate how this strategy can be applied to render non-responsive micelles pH-responsive, resulting in abrupt cargo release at specific and tunable pH values compatible with endosomal delivery, which significantly increased their cytotoxicity up to 3-fold in an ovarian adenocarcinoma (SKOV-3) cell line compared to non-responsive micelles. In comparison, the oligoelectrolyte-loaded micelles were significantly less toxic to healthy 3T3 fibroblasts, indicating a selective cargo release in cancer cell lines. Oligoelectrolytes can be co-encapsulated in the micelles along with drugs at high encapsulation efficiency percentages, which are both ejected from the micelle core upon oligoelectrolyte ionization. Mechanistically, the increase in cytotoxicity appears to also result from the accelerated endosomal escape of the cargo caused by disruption of the endosomal membrane by the simultaneous release of the oligoelectrolytes from the micelles. Furthermore, we show how this approach is broadly applicable to non-responsive micelles regardless of their composition and various classes of hydrophobic chemotherapeutics. The preliminary studies presented here reveal the versatility and wide scope of oligoelectrolyte-mediated, pH-triggered drug release as a compelling and powerful strategy to enhance the cytotoxicity of non-responsive polymeric micelles.
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Affiliation(s)
- Md Saddam Hussain
- Applied Chemistry and Translational Biomaterials (ACTB) Group, Centre for Pharmaceutical Innovation (CPI), UniSA CHS, University of South Australia, Adelaide, South Australia 5000, Australia
| | - Riya Khetan
- Centre for Pharmaceutical Innovation (CPI), UniSA CHS, University of South Australia, Adelaide, South Australia 5000, Australia
| | - Andrew J Clulow
- Australian Synchrotron, Australian Nuclear Science and Technology Organisation (ANSTO), 800 Blackburn Road, Clayton, Victoria 3168, Australia
- Drug Delivery, Disposition & Dynamics, Monash Institute of Pharmaceutical Sciences, 381 Royal Parade, Parkville, Victoria 3052, Australia
| | - Raja Ganesan
- Centre for Cancer Biology, UniSA CHS, University of South Australia, Adelaide, South Australia 5000, Australia
| | - Alexander MacMillan
- Katharina Gaus Light Microscopy Facility, Mark Wainwright Analytical Centre, University of New South Wales, Sydney, New South Wales 2033, Australia
| | - Nirmal Robinson
- Centre for Cancer Biology, UniSA CHS, University of South Australia, Adelaide, South Australia 5000, Australia
| | - Aria Ahmed-Cox
- Katharina Gaus Light Microscopy Facility, Mark Wainwright Analytical Centre, University of New South Wales, Sydney, New South Wales 2033, Australia
- Children's Cancer Institute, Lowy Cancer Research Centre, University of New South Wales, Sydney, New South Wales 2750, Australia
- Australian Centre for Nanomedicine, Faculty of Engineering, University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Marta Krasowska
- Surface Interactions and Soft Matter (SISM) Group, Future Industries Institute, UniSA STEM, University of South Australia, Mawson Lakes, South Australia 5095, Australia
| | - Hugo Albrecht
- Centre for Pharmaceutical Innovation (CPI), UniSA CHS, University of South Australia, Adelaide, South Australia 5000, Australia
| | - Anton Blencowe
- Applied Chemistry and Translational Biomaterials (ACTB) Group, Centre for Pharmaceutical Innovation (CPI), UniSA CHS, University of South Australia, Adelaide, South Australia 5000, Australia
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Imtiyaz Z, He J, Leng Q, Agrawal AK, Mixson AJ. pH-Sensitive Targeting of Tumors with Chemotherapy-Laden Nanoparticles: Progress and Challenges. Pharmaceutics 2022; 14:pharmaceutics14112427. [PMID: 36365245 PMCID: PMC9692785 DOI: 10.3390/pharmaceutics14112427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 11/03/2022] [Accepted: 11/05/2022] [Indexed: 11/12/2022] Open
Abstract
Accumulating chemotherapeutic drugs such as doxorubicin within a tumor while limiting the drug dose to normal tissues is a central goal of drug delivery with nanoparticles. Liposomal products such as Doxil® represent one of the marked successes of nanoparticle-based strategies. To replicate this success for cancer treatment, many approaches with nanoparticles are being explored in order to direct and release chemotherapeutic agents to achieve higher accumulation in tumors. A promising approach has been stimulus-based therapy, such as the release of chemotherapeutic agents from the nanoparticles in the acidic environments of the tumor matrix or the tumor endosomes. Upon reaching the acidic environments of the tumor, the particles, which are made up of pH-dependent polymers, become charged and release the entrapped chemotherapy agents. This review discusses recent advances in and prospects for pH-dependent histidine-based nanoparticles that deliver chemotherapeutic agents to tumors. The strategies used by investigators include an array of histidine-containing peptides and polymers which form micelles, mixed micelles, nanovesicles, polyplexes, and coat particles. To date, several promising histidine-based nanoparticles have been demonstrated to produce marked inhibition of tumor growth, but challenges remain for successful outcomes in clinical trials. The lessons learned from these histidine-containing particles will provide insight in the development of improved pH-dependent polymeric delivery systems for chemotherapy.
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Affiliation(s)
- Zuha Imtiyaz
- Department of Pathology, University Maryland School of Medicine, 10 S. Pine St., University of Maryland, Baltimore, MD 21201, USA
| | - Jiaxi He
- 20511 Seneca Meadows Pkwy, Suite 260, RNAimmune, Germantown, MD 20876, USA
| | - Qixin Leng
- Department of Pathology, University Maryland School of Medicine, 10 S. Pine St., University of Maryland, Baltimore, MD 21201, USA
| | - Atul K. Agrawal
- Department of Pathology, University Maryland School of Medicine, 10 S. Pine St., University of Maryland, Baltimore, MD 21201, USA
| | - A. James Mixson
- Department of Pathology, University Maryland School of Medicine, 10 S. Pine St., University of Maryland, Baltimore, MD 21201, USA
- Correspondence: ; Tel.: +1-410-706-3223; Fax: +1-410-706-8414
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Zhang Y, Kim I, Lu Y, Xu Y, Yu DG, Song W. Intelligent poly(l-histidine)-based nanovehicles for controlled drug delivery. J Control Release 2022; 349:963-982. [PMID: 35944751 DOI: 10.1016/j.jconrel.2022.08.005] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 08/04/2022] [Accepted: 08/04/2022] [Indexed: 12/11/2022]
Abstract
Stimuli-responsive drug delivery systems based on polymeric nanovehicles are among the most promising treatment regimens for malignant cancers. Such intelligent systems that release payloads in response to the physiological characteristics of tumor sites have several advantages over conventional drug carriers, offering, in particular, enhanced therapeutic effects and decreased toxicity. The tumor microenvironment (TME) is acidic, suggesting the potential of pH-responsive nanovehicles for enhancing treatment specificity and efficacy. The synthetic polypeptide poly(l-histidine) (PLH) is an appropriate candidate for the preparation of pH-responsive nanovehicles because the pKa of PLH (approximately 6.0) is close to the pH of the acidic TME. In addition, the pendent imidazole rings of PLH yield pH-dependent hydrophobic-to-hydrophilic phase transitions in the acidic TME, triggering the destabilization of nanovehicles and the subsequent release of encapsulated chemotherapeutic agents. Herein, we highlight the state-of-the-art design and construction of pH-responsive nanovehicles based on PLH and discuss the future challenges and perspectives of this fascinating biomaterial for targeted cancer treatment and "benchtop-to-clinic" translation.
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Affiliation(s)
- Yu Zhang
- School of Pharmacy, Shanghai University of Medicine and Health Sciences, Shanghai 201318, PR China.
| | - Il Kim
- School of Chemical Engineering, Pusan National University, Busan 46241, Republic of Korea.
| | - Yiming Lu
- School of Pharmacy, Shanghai University of Medicine and Health Sciences, Shanghai 201318, PR China
| | - Yixin Xu
- School of Pharmacy, Shanghai University of Medicine and Health Sciences, Shanghai 201318, PR China
| | - Deng-Guang Yu
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China.
| | - Wenliang Song
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China.
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Doxorubicin-Loaded Mixed Micelles Using Degradable Graft and Diblock Copolymers to Enhance Anticancer Sensitivity. Cancers (Basel) 2021; 13:cancers13153816. [PMID: 34359717 PMCID: PMC8345050 DOI: 10.3390/cancers13153816] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Revised: 07/26/2021] [Accepted: 07/27/2021] [Indexed: 11/17/2022] Open
Abstract
Simple Summary In this study, a long-circulating and pH responsive mixed micellar system was assembled with a degradable graft copolymer, poly(N-(2-hydroxypropyl) methacrylamide dilactate)-co-(N-(2-hydroxypropyl) methacrylamide-co-histidine)-graft-poly(d,l-lactide), and a diblock copolymer, methoxy poly(ethylene glycol)-b-poly(d,l-lactide) to load with the anticancer agent doxorubicin. The in vitro results indicate that the micellar system display high biosafety and intracellular drug-releasing behavior in cancer cells. Furthermore, the in vivo results show that the high stability of the mixed micelles leads to a high tumor accumulation and hence an excellent inhibition of tumor growth. This mixed micellar system, comprising degradable diblock and graft copolymers enables one to increase cancer cells’ sensitivity toward doxorubicin (Dox) and is feasible for further clinical use in cancer therapy. Abstract In this study, a graft copolymer, poly(N-(2-hydroxypropyl) methacrylamide dilactate)-co-(N-(2-hydroxypropyl) methacrylamide-co-histidine)-graft-poly(d,l-lactide), and a diblock copolymer, methoxy poly(ethylene glycol)-b-poly(d,l-lactide), were assembled into a mixed micellar system to encapsulate the anticancer drug doxorubicin (Dox). This mixed micellar system possesses the hydrophobic lactide segment of both copolymers, which reinforces its stability in physiological milieus; the histidine molecules appended on the graft copolymer provide the desired pH-responsive behavior to release Dox during internalization in cancer cells. The results demonstrate that the two copolymers were successfully prepared, and their ratios in the mixed micelles were optimized on the basis of the results of the stability tests. Under acidic conditions, the mixed micelles swell and are able to release their payloads. Therefore, the in vitro results indicate that the Dox in the mixed micelles is released effectively in response to the environmental pH of the mimetic internalization process, increasing cancer cells’ sensitivity toward Dox. The mixed micelles display low cytotoxicity due to the degradability of the polymers. The in vivo images show that the high stability of the mixed micelles ensures a high tumor accumulation. This selective tumor accumulation results in an excellent inhibition of in vivo tumor growth and a high rate of apoptosis in cancerous tissues, with low toxicity. This highly stable, mixed micellar system with a pH-dependent drug release, which enables the precise delivery of drugs to the tumor lesions, is feasible to employ clinically in cancer therapy.
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Frickenstein AN, Hagood JM, Britten CN, Abbott BS, McNally MW, Vopat CA, Patterson EG, MacCuaig WM, Jain A, Walters KB, McNally LR. Mesoporous Silica Nanoparticles: Properties and Strategies for Enhancing Clinical Effect. Pharmaceutics 2021; 13:570. [PMID: 33920503 PMCID: PMC8072651 DOI: 10.3390/pharmaceutics13040570] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 03/15/2021] [Accepted: 04/07/2021] [Indexed: 12/13/2022] Open
Abstract
Due to the theragnostic potential of mesoporous silica nanoparticles (MSNs), these were extensively investigated as a novel approach to improve clinical outcomes. Boasting an impressive array of formulations and modifications, MSNs demonstrate significant in vivo efficacy when used to identify or treat myriad malignant diseases in preclinical models. As MSNs continue transitioning into clinical trials, a thorough understanding of the characteristics of effective MSNs is necessary. This review highlights recent discoveries and advances in MSN understanding and technology. Specific focus is given to cancer theragnostic approaches using MSNs. Characteristics of MSNs such as size, shape, and surface properties are discussed in relation to effective nanomedicine practice and projected clinical efficacy. Additionally, tumor-targeting options used with MSNs are presented with extensive discussion on active-targeting molecules. Methods for decreasing MSN toxicity, improving site-specific delivery, and controlling release of loaded molecules are further explained. Challenges facing the field and translation to clinical environments are presented alongside potential avenues for continuing investigations.
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Affiliation(s)
- Alex N. Frickenstein
- Stephenson School of Biomedical Engineering, University of Oklahoma, Norman, OK 73019, USA; (A.N.F.); (C.A.V.); (W.M.M.)
- Stephenson Cancer Center, University of Oklahoma, Oklahoma City, OK 73104, USA; (J.M.H.); (M.W.M.)
| | - Jordan M. Hagood
- Stephenson Cancer Center, University of Oklahoma, Oklahoma City, OK 73104, USA; (J.M.H.); (M.W.M.)
| | - Collin N. Britten
- School of Chemical, Biological, and Materials Engineering, University of Oklahoma, Norman, OK 73019, USA; (C.N.B.); (B.S.A.); (K.B.W.)
| | - Brandon S. Abbott
- School of Chemical, Biological, and Materials Engineering, University of Oklahoma, Norman, OK 73019, USA; (C.N.B.); (B.S.A.); (K.B.W.)
| | - Molly W. McNally
- Stephenson Cancer Center, University of Oklahoma, Oklahoma City, OK 73104, USA; (J.M.H.); (M.W.M.)
| | - Catherine A. Vopat
- Stephenson School of Biomedical Engineering, University of Oklahoma, Norman, OK 73019, USA; (A.N.F.); (C.A.V.); (W.M.M.)
| | - Eian G. Patterson
- Department of Biology, University of Oklahoma, Norman, OK 73019, USA;
| | - William M. MacCuaig
- Stephenson School of Biomedical Engineering, University of Oklahoma, Norman, OK 73019, USA; (A.N.F.); (C.A.V.); (W.M.M.)
- Stephenson Cancer Center, University of Oklahoma, Oklahoma City, OK 73104, USA; (J.M.H.); (M.W.M.)
| | - Ajay Jain
- Department of Surgery, University of Oklahoma, Oklahoma City, OK 73104, USA;
| | - Keisha B. Walters
- School of Chemical, Biological, and Materials Engineering, University of Oklahoma, Norman, OK 73019, USA; (C.N.B.); (B.S.A.); (K.B.W.)
| | - Lacey R. McNally
- Stephenson Cancer Center, University of Oklahoma, Oklahoma City, OK 73104, USA; (J.M.H.); (M.W.M.)
- Department of Surgery, University of Oklahoma, Oklahoma City, OK 73104, USA;
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Entezar-Almahdi E, Heidari R, Ghasemi S, Mohammadi-Samani S, Farjadian F. Integrin receptor mediated pH-responsive nano-hydrogel based on histidine-modified poly(aminoethyl methacrylamide) as targeted cisplatin delivery system. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2021.102402] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Debele TA, Wu HC, Wu SR, Shan YS, Su WP. Combination Delivery of Alpha-Tocopheryl Succinate and Curcumin Using a GSH-Sensitive Micelle (PAH-SS-PLGA) to Treat Pancreatic Cancer. Pharmaceutics 2020; 12:pharmaceutics12080778. [PMID: 32824299 PMCID: PMC7464675 DOI: 10.3390/pharmaceutics12080778] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 08/13/2020] [Accepted: 08/14/2020] [Indexed: 01/13/2023] Open
Abstract
Pancreatic cancer is one of the highest causes of mortality throughout the world; thus, it requires an effective treatment strategy. Some chemotherapeutic agents used in the clinics or under clinical trials are hydrophobic and have poor aqueous solubility; consequently, they also have minimal systemic bioavailability. Nanoparticle-based drug delivery tactics have the potential for overcoming these limitations and enhancing their therapeutic efficacy. Herein, a glutathione (GSH)-sensitive micelle (PAH-SS-PLGA) was synthesized for the combined delivery of alpha-tocopheryl succinate (TOS) and curcumin to improve its therapeutic efficacy. The chemical structures of PAH-SS-PLGA were analyzed using Proton Nuclear Magnetic Resonance (1H-NMR) and Fourier Transform Infrared (FTIR) spectroscopy, whereas the particle size, zeta potential, and surface morphology were observed using dynamic light scattering (DLS) and transmission electron microscopy (TEM). In vitro drug release results revealed that more TOS and curcumin were released in the presence of GSH (5 mM) than the physiological pH value. Fluorescence microscopy images revealed that nanoformulated curcumin/rhodamine was uptaken by PAN02 pancreatic cancer cells. In vitro cytotoxicity assays showed higher cytotoxicity for nanoformulated TOS and/or curcumin than free TOS and/or curcumin. In addition, higher cytotoxicity was observed for combination drugs than free drugs alone. Most interestingly, at all tested concentrations of nanoformulated drugs (PAH-SS-PLGA, TOS, and curcumin), the calculated combination index (CI) value was less than one, which shows that TOS and curcumin have a synergistic effect on cellular proliferation inhibition. Overall, synthesized co-polymers are the best carriers for combination drugs, TOS, and curcumin, because they enhance the therapeutic efficacy and improve pancreatic cancer treatments.
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Affiliation(s)
- Tilahun Ayane Debele
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, No.138, Sheng Li Road, Tainan 704, Taiwan; (T.A.D.); (Y.-S.S.)
| | - Hung-Chang Wu
- Department of Internal Medicine, Chi Mei Medical Center, Tainan 710, Taiwan;
| | - Shang-Rung Wu
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan;
- Department of Dentistry & Institute of Oral Medicine, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan
| | - Yan-Shen Shan
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, No.138, Sheng Li Road, Tainan 704, Taiwan; (T.A.D.); (Y.-S.S.)
- Department of Surgery, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan
| | - Wen-Pin Su
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, No.138, Sheng Li Road, Tainan 704, Taiwan; (T.A.D.); (Y.-S.S.)
- Departments of Oncology and Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan
- Correspondence: ; Tel.: +886-6-2353535 (ext. 4252)
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Sim T, Kim JE, Hoang NH, Kang JK, Lim C, Kim DS, Lee ES, Youn YS, Choi HG, Han HK, Weon KY, Oh KT. Development of a docetaxel micellar formulation using poly(ethylene glycol)-polylactide-poly(ethylene glycol) (PEG-PLA-PEG) with successful reconstitution for tumor targeted drug delivery. Drug Deliv 2018; 25:1362-1371. [PMID: 29869563 PMCID: PMC6060706 DOI: 10.1080/10717544.2018.1477865] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2018] [Revised: 05/09/2018] [Accepted: 05/14/2018] [Indexed: 11/17/2022] Open
Abstract
Docetaxel (DTX)-loaded polymeric micelles (DTBM) were formulated using the triblock copolymer, poly(ethylene glycol)-polylactide-poly(ethylene glycol) (PEG-PLA-PEG), to comprehensively study their pharmaceutical application as anticancer nanomedicine. DTBM showed a stable formulation of anticancer nanomedicine that could be reconstituted after lyophilization (DTBM-R) in the presence of PEG 2000 and D-mannitol (Man) as surfactant and protectant, respectively. DTBM-R showed a particle size less than 150 nm and greater than 90% of DTX recovery after reconstitution. The robustly formed micelles might minimize systemic toxicity due to their sustained drug release and also maximize antitumor efficacy through increased accumulation and release of DTX from the micelles. From the pharmaceutical development point of view, DTBM-R showing successful reconstitution could be considered as a potent nanomedicine for tumor treatment.
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Affiliation(s)
- Taehoon Sim
- a College of Pharmacy , Chung-Ang University , Seoul , Republic of Korea
| | - Jae Eun Kim
- a College of Pharmacy , Chung-Ang University , Seoul , Republic of Korea
| | - Ngoc Ha Hoang
- a College of Pharmacy , Chung-Ang University , Seoul , Republic of Korea
| | - Jin Kook Kang
- a College of Pharmacy , Chung-Ang University , Seoul , Republic of Korea
| | - Chaemin Lim
- a College of Pharmacy , Chung-Ang University , Seoul , Republic of Korea
| | - Dong Shik Kim
- b College of Pharmacy & Institute of Pharmaceutical Science and Technology , Hanyang University , Ansan , Republic of Korea
| | - Eun Seong Lee
- c Department of Biotechnology , The Catholic University of Korea , Bucheon , Republic of Korea
| | - Yu Seok Youn
- d School of Pharmacy , SungKyunKwan University , Suwon City , Republic of Korea
| | - Han-Gon Choi
- b College of Pharmacy & Institute of Pharmaceutical Science and Technology , Hanyang University , Ansan , Republic of Korea
| | - Hyo-Kyung Han
- e College of Pharmacy , Dongguk University-Seoul , Goyang , Republic of Korea
| | - Kwon-Yeon Weon
- f College of Pharmacy , Catholic University of Daegu , Gyeongsan-si , Republic of Korea
| | - Kyung Taek Oh
- a College of Pharmacy , Chung-Ang University , Seoul , Republic of Korea
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PEG and PEG-peptide based doxorubicin delivery systems containing hydrazone bond. JOURNAL OF POLYMER RESEARCH 2018. [DOI: 10.1007/s10965-018-1506-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Wang T, Feng L, Yang S, Liu Y, Zhang N. Ceramide lipid-based nanosuspension for enhanced delivery of docetaxel with synergistic antitumor efficiency. Drug Deliv 2017; 24:800-810. [PMID: 28502199 PMCID: PMC8241063 DOI: 10.1080/10717544.2016.1225853] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Ceramide (CE), a bioactive lipid with tumor suppression, has been widely used as a drug carrier and enhancer for cancer therapy. CE-based combination therapy was prone to be attractive in cancer therapy. In our previous study, the combination of CE and docetaxel (DTX) was proved to be an effective strategy for cancer therapy. To further improve the antitumor efficiency of DTX, the CE lipid-based nanosuspensions (LNS) was prepared for the delivery of DTX to exhibit synergistic therapeutic effect. The enhanced delivery and synergistic therapeutic effect of DTX-loaded CE-LNS (CE + DTX-LNS) were evaluated. CE + DTX-LNS exhibited spherical or ellipsoidal shape, uniform particle size distribution (108.1 ± 3.8 nm), sustained release characteristics and good stability in vitro. Notably, CE + DTX-LNS could effectively co-localize CE and DTX into same tumor cell and subsequently play synergistic cell damage effect compared with CE-LNS + DTX-LNS (p < 0.05). The in vivo fluorescence imaging results showed that CE + DTX-LNS could effectively prolong the in vivo circulation time and enhance the accumulation in tumor sites. Moreover, the antitumor efficacy of CE + DTX-LNS observed in B16 murine melanoma model was 93.94 ± 2.77%, significantly higher than that of CE-LNS, DTX-LNS, Duopafei® (p < 0.01) and CE-LNS + DTX-LNS (p < 0.05), respectively, demonstrating that co-delivery of CE and DTX into same tumor cell was the basis for enhanced synergistic therapeutic effect. Furthermore, histological examination of Blank-LNS showed no visible tissue toxicity compared to normal saline. Consequently, CE-LNS could effectively delivery DTX and CE + DTX-LNS exhibit synergistic inhibition of tumor growth due to the co-localization of CE and DTX. CE-LNS hold great potential to be an appropriate carrier for CE-based combination chemotherapy.
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Affiliation(s)
- Tianqi Wang
- a School of Pharmaceutical Science, Shandong University , Ji'nan , People's Republic of China
| | - Lixia Feng
- a School of Pharmaceutical Science, Shandong University , Ji'nan , People's Republic of China
| | - Shaomei Yang
- a School of Pharmaceutical Science, Shandong University , Ji'nan , People's Republic of China
| | - Yongjun Liu
- a School of Pharmaceutical Science, Shandong University , Ji'nan , People's Republic of China
| | - Na Zhang
- a School of Pharmaceutical Science, Shandong University , Ji'nan , People's Republic of China
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Di Y, Li T, Zhu Z, Chen F, Jia L, Liu W, Gai X, Wang Y, Pan W, Yang X. pH-sensitive and folic acid-targeted MPEG-PHIS/FA-PEG-VE mixed micelles for the delivery of PTX-VE and their antitumor activity. Int J Nanomedicine 2017; 12:5863-5877. [PMID: 28860753 PMCID: PMC5566413 DOI: 10.2147/ijn.s141982] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
The aim of this study was to simultaneously introduce pH sensitivity and folic acid (FA) targeting into a micelle system to achieve quick drug release and to enhance its accumulation in tumor cells. Paclitaxel-(+)-α-tocopherol (PTX-VE)-loaded mixed micelles (PHIS/FA/PM) fabricated by poly(ethylene glycol) methyl ether-poly(histidine) (MPEG-PHIS) and folic acid-poly(ethylene glycol)-(+)-α-tocopherol (FA-PEG-VE) were characterized by dynamic light scattering and transmission electron microscopy (TEM). The mixed micelles had a spherical morphology with an average diameter of 137.0±6.70 nm and a zeta potential of -48.7±4.25 mV. The drug encapsulation and loading efficiencies were 91.06%±2.45% and 5.28%±0.30%, respectively. The pH sensitivity was confirmed by changes in particle size, critical micelle concentration, and transmittance as a function of pH. MTT assay showed that PHIS/FA/PM had higher cytotoxicity at pH 6.0 than at pH 7.4, and lower cytotoxicity in the presence of free FA. Confocal laser scanning microscope images demonstrated a time-dependent and FA-inhibited cellular uptake. In vivo imaging confirmed that the mixed micelles targeted accumulation at tumor sites and the tumor inhibition rate was 85.97%. The results proved that the mixed micelle system fabricated by MPEG-PHIS and FA-PEG-VE is a promising approach to improve antitumor efficacy.
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Affiliation(s)
- Yan Di
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University
| | - Ting Li
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University
| | - Zhihong Zhu
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University
| | - Fen Chen
- Key Laboratory of Ministry of Education for TCM Viscera-State Theory and Applications, Liaoning University of Traditional Chinese Medicine
| | - Lianqun Jia
- Key Laboratory of Ministry of Education for TCM Viscera-State Theory and Applications, Liaoning University of Traditional Chinese Medicine
| | - Wenbing Liu
- Key Laboratory of Structure-Based Drug Design & Discovery, Shenyang Pharmaceutical University, Ministry of Education, Shenyang, China
| | - Xiumei Gai
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University
| | - Yingying Wang
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University
| | - Weisan Pan
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University
| | - Xinggang Yang
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University
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12
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A magnetic polypeptide nanocomposite with pH and near-infrared dual responsiveness for cancer therapy. JOURNAL OF POLYMER RESEARCH 2017. [DOI: 10.1007/s10965-017-1277-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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Nittayacharn P, Nasongkla N. Development of self-forming doxorubicin-loaded polymeric depots as an injectable drug delivery system for liver cancer chemotherapy. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2017; 28:101. [PMID: 28534285 DOI: 10.1007/s10856-017-5905-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Accepted: 05/03/2017] [Indexed: 06/07/2023]
Abstract
The objective of this work was to develop self-forming doxorubicin-loaded polymeric depots as an injectable drug delivery system for liver cancer chemotherapy and studied the release profiles of doxorubicin (Dox) from different depot formulations. Tri-block copolymers of poly(ε-caprolactone), poly(D,L-lactide) and poly(ethylene glycol) named PLECs were successfully used as a biodegradable material to encapsulate Dox as the injectable local drug delivery system. Depot formation and encapsulation efficiency of these depots were evaluated. Results show that depots could be formed and encapsulate Dox with high drug loading content. For the release study, drug loading content (10, 15 and 20% w/w) and polymer concentration (25, 30, and 35% w/v) were varied. It could be observed that the burst release occurred within 1-2 days and this burst release could be reduced by physical mixing of hydroxypropyl-beta-cyclodextrin (HP-β-CD) into the depot system. The degradation at the surface and cross-section of the depots were examined by Scanning Electron Microscope (SEM). In addition, cytotoxicity of Dox-loaded depots and blank depots were tested against human liver cancer cell lines (HepG2). Dox released from depots significantly exhibited potent cytotoxic effect against HepG2 cell line compared to that of blank depots. Results from this study reveals an important insight in the development of injectable drug delivery system for liver cancer chemotherapy. Schematic diagram of self-forming doxorubicin-loaded polymeric depots as an injectable drug delivery system and in vitro characterizations. (a) Dox-loaded PLEC depots could be formed with more than 90% of sustained-release Dox at 25% polymer concentration and 20% Dox-loading content. The burst release occurred within 1-2 days and could be reduced by physical mixing of hydroxypropyl-beta-cyclodextrin (HP-β-CD) into the depot system. (b) Dox released from depots significantly exhibited potent cytotoxic effect against human liver cancer cell lines (HepG2 cell line) compared to that of blank depots.
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Affiliation(s)
- Pinunta Nittayacharn
- Department of Biomedical Engineering, Faculty of Engineering, Mahidol University, Nakorn Pathom, 73170, Thailand
| | - Norased Nasongkla
- Department of Biomedical Engineering, Faculty of Engineering, Mahidol University, Nakorn Pathom, 73170, Thailand.
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Bazban-Shotorbani S, Hasani-Sadrabadi MM, Karkhaneh A, Serpooshan V, Jacob KI, Moshaverinia A, Mahmoudi M. Revisiting structure-property relationship of pH-responsive polymers for drug delivery applications. J Control Release 2017; 253:46-63. [DOI: 10.1016/j.jconrel.2017.02.021] [Citation(s) in RCA: 141] [Impact Index Per Article: 20.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2016] [Revised: 01/23/2017] [Accepted: 02/19/2017] [Indexed: 12/17/2022]
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15
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Near-infrared mediated quantum dots and paclitaxel co-loaded nanostructured lipid carriers for cancer theragnostic. Colloids Surf B Biointerfaces 2017; 150:121-130. [DOI: 10.1016/j.colsurfb.2016.11.032] [Citation(s) in RCA: 77] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Revised: 11/16/2016] [Accepted: 11/23/2016] [Indexed: 11/19/2022]
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16
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Gong C, Shan M, Li B, Wu G. A pH and redox dual stimuli-responsive poly(amino acid) derivative for controlled drug release. Colloids Surf B Biointerfaces 2016; 146:396-405. [DOI: 10.1016/j.colsurfb.2016.06.038] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Revised: 06/14/2016] [Accepted: 06/21/2016] [Indexed: 11/30/2022]
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17
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Bilalis P, Varlas S, Kiafa A, Velentzas A, Stravopodis D, Iatrou H. Preparation of hybrid triple-stimuli responsive nanogels based on poly(L-histidine). ACTA ACUST UNITED AC 2015. [DOI: 10.1002/pola.27971] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Panayiotis Bilalis
- Department of Chemistry; University of Athens; Panepistimiopolis, Zografou Athens 15771 Greece
| | - Spyridon Varlas
- Department of Chemistry; University of Athens; Panepistimiopolis, Zografou Athens 15771 Greece
| | - Aikaterini Kiafa
- Department of Chemistry; University of Athens; Panepistimiopolis, Zografou Athens 15771 Greece
| | - Athanassios Velentzas
- Department of Cell Biology and Biophysics, Faculty of Biology; University of Athens; Panepistimiopolis, Zografou Athens 15784 Greece
| | - Dimitrios Stravopodis
- Department of Cell Biology and Biophysics, Faculty of Biology; University of Athens; Panepistimiopolis, Zografou Athens 15784 Greece
| | - Hermis Iatrou
- Department of Chemistry; University of Athens; Panepistimiopolis, Zografou Athens 15771 Greece
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18
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Nguyen HTP, Munnier E, Souce M, Perse X, David S, Bonnier F, Vial F, Yvergnaux F, Perrier T, Cohen-Jonathan S, Chourpa I. Novel alginate-based nanocarriers as a strategy to include high concentrations of hydrophobic compounds in hydrogels for topical application. NANOTECHNOLOGY 2015; 26:255101. [PMID: 26033822 DOI: 10.1088/0957-4484/26/25/255101] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The cutaneous penetration of hydrophobic active molecules is of foremost concern in the dermatology and cosmetic formulation fields. The poor solubility in water of those molecules limits their use in hydrophilic forms such as gels, which are favored by patients with chronic skin disease. The aim of this work is to design a novel nanocarrier of hydrophobic active molecules and to determine its potential as an ingredient of a topical form. The nanocarrier consists of an oily core surrounded by a protective shell of alginate, a natural polysaccharide isolated from brown algae. These calcium alginate-based nanocarriers (CaANCs) were prepared at room temperature and without the use of organic solvent by an accelerated nanoemulsification-polymer crosslinking method. The size (hydrodynamic diameter ~200 nm) and surface charge (zeta potential ~ - 30 mV) of the CaANCs are both compatible with their application on skin. CaANCs loaded with a fluorescent label were stable in model hydrophilic galenic forms under different storage conditions. Curcumin was encapsulated in CaANCs with an efficiency of ~95%, fully retaining its antioxidant activity. The application of the curcumin-loaded CaANCs on excised human skin led to a significant accumulation of the active molecules in the upper layers of the skin, asserting the potential of these nanocarriers in active pharmaceutical and cosmetic ingredients topical delivery.
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Affiliation(s)
- H T P Nguyen
- Université François Rabelais de Tours, EA6295 Nanomédicaments et Nanosondes, 31 avenue Monge, 37000 Tours, France
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19
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Yang T, Li F, Zhang H, Fan L, Qiao Y, Tan G, Zhang H, Wu H. Multifunctional pH-sensitive micelles for tumor-specific uptake and cellular delivery. Polym Chem 2015. [DOI: 10.1039/c4py01403k] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dox in the LHRH-PEG-PHIS-Dox/Dox-TAT system could be transported into tumor cells via two pathways: LHRH receptor-mediated endocytosis and TAT-mediated nonendocytotic process.
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Affiliation(s)
- Tiehong Yang
- Department of Pharmaceutical Analysis
- School of Pharmacy
- Fourth Military Medical University
- Xi'an 710032
- China
| | - Fei Li
- Department of Pharmaceutical Analysis
- School of Pharmacy
- Fourth Military Medical University
- Xi'an 710032
- China
| | - Haitao Zhang
- Department of Pharmaceutical Analysis
- School of Pharmacy
- Fourth Military Medical University
- Xi'an 710032
- China
| | - Li Fan
- Department of Pharmaceutical Analysis
- School of Pharmacy
- Fourth Military Medical University
- Xi'an 710032
- China
| | - Youbei Qiao
- Department of Pharmaceutical Analysis
- School of Pharmacy
- Fourth Military Medical University
- Xi'an 710032
- China
| | - Guangguo Tan
- Department of Pharmaceutical Analysis
- School of Pharmacy
- Fourth Military Medical University
- Xi'an 710032
- China
| | - Haifei Zhang
- Department of Chemistry
- University of Liverpool
- LiverpoolL69 7ZD
- UK
| | - Hong Wu
- Department of Pharmaceutical Analysis
- School of Pharmacy
- Fourth Military Medical University
- Xi'an 710032
- China
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20
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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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21
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Synergistic enhancement of cancer therapy using a combination of ceramide and docetaxel. Int J Mol Sci 2014; 15:4201-20. [PMID: 24619193 PMCID: PMC3975392 DOI: 10.3390/ijms15034201] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Revised: 02/19/2014] [Accepted: 02/21/2014] [Indexed: 12/12/2022] Open
Abstract
Ceramide (CE)-based combination therapy (CE combination) as a novel therapeutic strategy has attracted great attention in the field of anti-cancer therapy. The principal purposes of this study were to investigate the synergistic effect of CE in combination with docetaxel (DTX) (CE + DTX) and to explore the synergy mechanisms of CE + DTX. The 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) and combination index (CI) assay showed that simultaneous administration of CE and DTX with a molar ratio of 0.5:1 could generate the optimal synergistic effect on murine malignant melanoma cell (B16, CI = 0.31) and human breast carcinoma cell (MCF-7, CI = 0.48). The apoptosis, cell cycle, and cytoskeleton destruction study demonstrated that CE could target and destruct the microfilament actin, subsequently activate Caspase-3 and induce apoptosis. Meanwhile, DTX could target and disrupt the microtubules cytoskeleton, leading to a high proportion of cancer cells in G2/M-phase arrest. Moreover, CE plus DTX could cause a synergistic destruction of cytoskeleton, which resulted in a significantly higher apoptosis and a significantly higher arrest in G2/M arrest comparing with either agent alone (p < 0.01). The in vivo antitumor study evaluated in B16 tumor-bearing mice also validated the synergistic effects. All these results suggested that CE could enhance the antitumor activity of DTX in a synergistic manner, which suggest promising application prospects of CE + DTX combination treatment.
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22
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Li F, Fan L, Li W, Duan X, Qiao Y, Wu H. Synthesis and micellar characterization of luteinizing hormone-releasing hormone poly(ethylene glycol)-block-poly(l-histidine) copolymers. POLYM ENG SCI 2014. [DOI: 10.1002/pen.23892] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Fei Li
- Department Pharmaceutical Analysis, School of Pharmacy; Fourth Military Medical University; Xi'an China
- Department of Pharmacy; 456 Hospital of People's Liberation Army; Ji'nan China
| | - Li Fan
- Department Pharmaceutical Analysis, School of Pharmacy; Fourth Military Medical University; Xi'an China
| | - Wei Li
- Department Pharmaceutical Analysis, School of Pharmacy; Fourth Military Medical University; Xi'an China
| | - Xiao Duan
- Department Pharmaceutical Analysis, School of Pharmacy; Fourth Military Medical University; Xi'an China
| | - Youbei Qiao
- Department Pharmaceutical Analysis, School of Pharmacy; Fourth Military Medical University; Xi'an China
| | - Hong Wu
- Department Pharmaceutical Analysis, School of Pharmacy; Fourth Military Medical University; Xi'an China
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23
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Lee ES, Kim JH, Sim T, Youn YS, Lee BJ, Oh YT, Oh KT. A feasibility study of a pH sensitive nanomedicine using doxorubicin loaded poly(aspartic acid-graft-imidazole)-block-poly(ethylene glycol) micelles. J Mater Chem B 2014; 2:1152-1159. [DOI: 10.1039/c3tb21379j] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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24
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Lu H, Wang J, Song Z, Yin L, Zhang Y, Tang H, Tu C, Lin Y, Cheng J. Recent advances in amino acid N-carboxyanhydrides and synthetic polypeptides: chemistry, self-assembly and biological applications. Chem Commun (Camb) 2014; 50:139-55. [DOI: 10.1039/c3cc46317f] [Citation(s) in RCA: 231] [Impact Index Per Article: 23.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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25
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Bera LK, Ong KS, Wong ZZ, Fu Z, Nallani M, Shea SO. Trapping of vesicles on patterned surfaces by physisorption for potential biosensing applications. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2013; 2012:6563-7. [PMID: 23367433 DOI: 10.1109/embc.2012.6347498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The pre-defined selective positioning of a controlled number of vesicles on a rigid substrate is crucial in many potential applications such as diagnostics, biosensors, lab-on-a chip, microanalyses and reaction chambers. In this paper, the vesicles made up of block copolymer using Poly [-(2-methyloxazoline) -poly- (dimethylsiloxane)-poly- (2-methyloxazoline)] (ABA) with dimensions of 100-200 nm are trapped by physisorption on hydrophilic surfaces. We discuss the protocols established for vesicle trapping. The optimum conditions obtained for physisorption is 15 minutes incubation followed by one cycle of DI water rinse. Trapping of 1-10 vesicles in lobe shape micro-wells fabricated by photo lithography using photoresist on UltraStick(™) slides was demonstrated. To overcome the issue of amalgamation of emitted light from optically sensitive photoresist and fluorescently tagged vesicles, an alternative approach of Si/SiO(2) microwell array coupled with APTES (3-AminoPropylTriEthoxySilane) treated bottom surfaces was developed.
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Affiliation(s)
- L K Bera
- Institute of Materials Research and Engineering, Agency forScience, Technology and Research, 3 Research Link, Singapore
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26
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Reversing multidrug resistance by intracellular delivery of Pluronic® P85 unimers. Biomaterials 2013; 34:9602-14. [PMID: 24021757 DOI: 10.1016/j.biomaterials.2013.08.032] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2013] [Accepted: 08/10/2013] [Indexed: 12/27/2022]
Abstract
Pluronics have been demonstrated as excellent multidrug resistance (MDR) reversal agent in the form of unimers rather than micelles. However, the effective intracellular delivery of Pluronic(®) unimers to MDR cancer cells still remains a big challenge. To address this issue, a mixed micellar system based mainly on the pH-sensitive copolymer of poly (L-histidine)-poly (D,L-lactide)-polyethyleneglycol-poly (D,L-lactide)-poly (L-histidine) (PHis-PLA-PEG-PLA-PHis) and Pluronic(®) F127, some of which was conjugated with folate, was constructed to intracellularly deliver the unimers of Pluronic(®) P85 to MDR cells. The folate-mediated endosomal pH-sensitive mixed micelles (pHendoSM-P85/f) were prepared by a thin-film hydration method, by which Pluronic(®) P85 unimers and doxorubicin (DOX) were incoporated into the mixed micelles. The incorporation of Pluronic(®) P85 unimers was investigated by the surface tension test. The results indicated that the Pluronic(®) P85 unimers probably first inserted into the binary mixed micelles and then formed a triple-component mixed micelles with Pluronic(®) F127 and PHis-PLA-PEG-PLA-PHis as the loading content increased. Further analyzed with flow cytometry, confocal laser scanning microscopy (CLSM) and MTT assay, the micelles with inserted Pluronic(®) P85 unimers demonstrated much more cellular uptake and higher cytotoxicity against MDR cells than the triple-component mixed micelles and plain Pluronic(®) micelles. The enhanced MDR reversal effect was attributed to the successful intracellular delivery of Pluronic(®) P85 unimers to the MDR cells, which was confirmed by the subcellular colocalization of Pluronic(®) P85 unimers with mitochondria, the decreased ATP energy and mitochondrial membrane potential (MP) in the MCF-7/ADR cells. The pHendoSM-P85/f/DOX also demonstrated more dramatic antitumor efficiency and remarkable reduction of ATP energy in the MDR cells in tumors than the control formulations. The intracellular delivery of Pluronic(®) P85 unimers to the MDR cells based on the targeted and endosomal pH triggerd release mixed micelles has been demonstrated as a promising approach to reverse MDR.
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27
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pH-sensitive polymeric micelles triggered drug release for extracellular and intracellular drug targeting delivery. Asian J Pharm Sci 2013. [DOI: 10.1016/j.ajps.2013.07.021] [Citation(s) in RCA: 158] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
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28
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Pepić I, Lovrić J, Hafner A, Filipović-Grčić J. Powder form and stability of Pluronic mixed micelle dispersions for drug delivery applications. Drug Dev Ind Pharm 2013; 40:944-51. [PMID: 23627442 DOI: 10.3109/03639045.2013.791831] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The aim of this work was to optimize a formulation of the Pluronic® F127/L121 mixed micelle system and evaluate it in terms of stability upon dilution in biologically relevant media and to explore the possibility of preparing F127/L121 micelles in a powder form that can be simply reconstituted to an initial freshly made mixed micelle formulation. The mixed F127/L121 micelles were prepared at a relatively high concentration of Pluronics (1% w/w for both Pluronics) using two different methods (direct dissolution and film rehydration) with an external input of energy. The optimal preparation of the mixed F127/L121 micelles (hydrodynamic diameter (dh) = 75 nm, polydispersity index (PDI) = 0.287) was achieved using the film rehydration method followed by ultrasonication. Stability studies of the F127/L121 micelle system were performed at 25 °C and 37 °C and upon dilution in different biologically relevant media. The F127/L121 micelles were stable in phosphate buffered saline (PBS) upon 100-fold dilution for at least 10 d and in PBS containing bovine serum albumin upon 10 and 50-fold dilution for at least 48 and 12 h, respectively. A dry powdered form of the mixed micelles was prepared by freeze-drying after slow or fast freezing process. The influence of the type and amount of cryoprotectant on the prevention of F127/L121 micelles aggregation during the freeze-drying and reconstitution processes were evaluated. The use of trehalose (5%, w/w) and sucrose (2.5%, w/w) with slow and fast freezing process, respectively, resulted in a reconstituted product with mostly similar dh and PDI values of the fresh micelle formulation.
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Affiliation(s)
- Ivan Pepić
- Faculty of Pharmacy and Biochemistry, Department of Pharmaceutical Technology, University of Zagreb , Zagreb , Croatia
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29
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Li Y, Gao GH, Lee DS. Stimulus-sensitive polymeric nanoparticles and their applications as drug and gene carriers. Adv Healthc Mater 2013. [PMID: 23184586 DOI: 10.1002/adhm.201200313] [Citation(s) in RCA: 121] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Polymeric nanoparticles are promising candidates as drug and gene carriers. Among polymeric nanoparticles, those that are responsive to internal or external stimuli are of greater interest because they allow more efficient delivery of therapeutics to pathological regions. Stimulus-sensitive polymeric nanoparticles have been fabricated based on numerous nanostructures, including micelles, vesicles, crosslinked nanoparticles, and hybrid nanoparticles. The changes in chemical or physical properties of polymeric nanoparticles that occur in response to single, dual, or multiple stimuli endow these nanoparticles with the ability to retain cargoes during circulation, target the pathological region, and release their cargoes after cell internalization. This Review focuses on the most recent developments in the preparation of stimulus-sensitive polymeric nanoparticles and their applications in drug and gene delivery.
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Affiliation(s)
- Yi Li
- Department of Polymer Science and Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 440-746, Republic of Korea
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30
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Cheng K, Sun Z, Zhou Y, Zhong H, Kong X, Xia P, Guo Z, Chen Q. Preparation and biological characterization of hollow magnetic Fe3O4@C nanoparticles as drug carriers with high drug loading capability, pH-control drug release and MRI properties. Biomater Sci 2013; 1:965-974. [DOI: 10.1039/c3bm60087d] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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31
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Mastrotto F, Salmaso S, Lee YL, Alexander C, Caliceti P, Mantovani G. pH-responsive poly(4-hydroxybenzoyl methacrylates) – design and engineering of intelligent drug delivery nanovectors. Polym Chem 2013. [DOI: 10.1039/c3py00496a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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32
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Wu H, Zhu L, Torchilin VP. pH-sensitive poly(histidine)-PEG/DSPE-PEG co-polymer micelles for cytosolic drug delivery. Biomaterials 2012; 34:1213-22. [PMID: 23102622 DOI: 10.1016/j.biomaterials.2012.08.072] [Citation(s) in RCA: 295] [Impact Index Per Article: 24.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2012] [Accepted: 08/30/2012] [Indexed: 02/01/2023]
Abstract
To introduce pH sensitivity into the DSPE-PEG-based micellar system and achieve the quick intracellular drug release in response to the acidity in endosomes, a mixed polymeric micelle was developed based on three grafted copolymers, including 1,2-distearoyl-sn-glycero-3-phosphoethanolamine-polyethylene glycol-2000(DSPE-PEG(2000)), antinucleosome antibody (mAb 2C5)-modified DSPE-PEG(3400) (DSPE-PEG(3400)-2C5), and poly(ethylene glycol)-coupled poly(L-histidine) (PHIS-PEG(2000)). The structure of PHIS-PEG(2000) was confirmed by (1)H NMR spectroscopy. The mixed micelles with the diameter ranging from 110 to 135 nm were prepared using a dialysis method against pH 7.6 PBS. Paclitaxel (PCT) was used as a model drug, the encapsulation efficiency and loading content of PCT were 88% and 5%, respectively. The mixed micelles composed with 50 wt% of PHIS-PEG(2000) showed the desired pH-dependent drug release property with much faster drug release than micelles without PHIS-PEG(2000). At pH around 5.5, about 75-95% of the loaded drug was released within 2 h. The MTT assay showed PCT-loaded mixed micelles had higher cytotoxicity at pH 5.8 than that at pH 7.4. Further modification of the mixed micelles with anti-cancer nucleosome-specific monoclonal antibody 2C5 significantly increased their cellular uptake efficiency and cytotoxicity. Thus, the low pH in endosomes could trigger the PCT release from the pH-sensitive mixed micelles after 2C5-mediated endocytosis. The results of this study suggest that the mixed micelles (DSPE-PEG(2000)/DSPE-PEG(3400)-2C5/PHIS-PEG(2000)) could enhance the tumor cell-specific internalization and trigger the quick drug release, resulting in the improved anti-cancer efficacy.
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Affiliation(s)
- Hong Wu
- Center for Pharmaceutical Biotechnology and Nanomedicine, Northeastern University, Boston, MA 02115, USA
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33
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Kulthe SS, Choudhari YM, Inamdar NN, Mourya V. Polymeric micelles: authoritative aspects for drug delivery. Des Monomers Polym 2012. [DOI: 10.1080/1385772x.2012.688328] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
Affiliation(s)
- Sushant S. Kulthe
- a Government College of Pharmacy , Aurangabad , 431005 , Maharashtra , India
| | - Yogesh M. Choudhari
- a Government College of Pharmacy , Aurangabad , 431005 , Maharashtra , India
| | - Nazma N. Inamdar
- a Government College of Pharmacy , Aurangabad , 431005 , Maharashtra , India
| | - Vishnukant Mourya
- a Government College of Pharmacy , Aurangabad , 431005 , Maharashtra , India
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34
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Wang L, Li M, Zhang N. Folate-targeted docetaxel-lipid-based-nanosuspensions for active-targeted cancer therapy. Int J Nanomedicine 2012; 7:3281-94. [PMID: 22802688 PMCID: PMC3396388 DOI: 10.2147/ijn.s32520] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The purpose of this study was to develop two novel drug delivery systems based on biodegradable docetaxel-lipid-based-nanosuspensions. The first one was poly(ethylene glycol)- modified docetaxel-lipid-based-nanosuspensions (pLNS). It was developed to increase the cycle time of the drug within the body and enhance the accumulation of the drug at the tumor site. The second one was targeted docetaxel-lipid-based-nanosuspensions (tLNS) using folate as the target ligand. The tLNS could target the tumor cells that overexpressed folate receptor (FR). The morphology, particle size, and zeta potential of pLNS and tLNS were characterized, respectively. The in vitro cytotoxicity evaluation of Duopafei®, pLNS, and tLNS were performed in human hepatocellular liver carcinoma HepG2 (FR−) and B16 (FR+) cells, respectively. The in vivo antitumor efficacy and pharmacokinetics, as well as the drug tissue distribution, were evaluated in Kunming mice bearing B16 cells. The particle size of pLNS was 204.2 ± 6.18 nm and tLNS had a mean particle size of 220.6 ± 9.54 nm. Cytotoxicity of tLNS against B16 (FR+) cell lines was superior to pLNS (P < 0.05), while there was no significant difference in the half maximum inhibitory concentration values for HepG2 (FR−) cells between pLNS and tLNS. The results of the in vivo antitumor efficacy evaluation showed that tLNS exhibited higher antitumor efficacy by reducing tumor volume (P < 0.01) compared with Duopafei and pLNS, respectively. The results of the in vivo biodistribution study indicate that the better antitumor efficacy of tLNS was attributed to the increased accumulation of the drug in the tumor.
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Affiliation(s)
- Lili Wang
- School of Pharmaceutical Science, Shandong University, Jinan, Shandong, China
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He C, Zhuang X, Tang Z, Tian H, Chen X. Stimuli-sensitive synthetic polypeptide-based materials for drug and gene delivery. Adv Healthc Mater 2012. [PMID: 23184687 DOI: 10.1002/adhm.201100008] [Citation(s) in RCA: 262] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Stimuli-sensitive synthetic polypeptides are unique biodegradable and biocompatible synthetic polymers with structures mimicking natural proteins. These polymers exhibit reversible secondary conformation transitions and/or hydrophilic-hydrophobic transitions in response to changes in environmental conditions such as pH and temperature. The stimuli-triggered conformation and/or phase transitions lead to unique self-assembly behaviors, making these materials interesting for controlled drug and gene delivery applications. Therefore, stimuli-sensitive synthetic polypeptide-based materials have been extensively investigatid in recent years. Various polypeptide-based materials, including micelles, vesicles, nanogels, and hydrogels, have been developed and tested for drug- and gene-delivery applications. In addition, the presence of reactive side groups in some polypeptides facilitates the incorporation of various functional moieties to the polypeptides. This Review focuses on recent advances in stimuli-sensitive polypeptide-based materials that have been designed and evaluated for drug and gene delivery applications. In addition, recent developments in the preparation of stimuli-sensitive functionalized polypeptides are discussed.
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Affiliation(s)
- Chaoliang He
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China
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CHEN J, WANG H, XU X, CHEN W, ZHANG X. PEPTIDES AND POLYPEPTIDES FOR GENE AND DRUG DELIVERY. ACTA POLYM SIN 2011. [DOI: 10.3724/sp.j.1105.2011.11100] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Elzoghby AO, Samy WM, Elgindy NA. Albumin-based nanoparticles as potential controlled release drug delivery systems. J Control Release 2011; 157:168-82. [PMID: 21839127 DOI: 10.1016/j.jconrel.2011.07.031] [Citation(s) in RCA: 928] [Impact Index Per Article: 71.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2011] [Accepted: 07/20/2011] [Indexed: 10/17/2022]
Abstract
Albumin, a versatile protein carrier for drug delivery, has been shown to be nontoxic, non-immunogenic, biocompatible and biodegradable. Therefore, it is ideal material to fabricate nanoparticles for drug delivery. Albumin nanoparticles have gained considerable attention owing to their high binding capacity of various drugs and being well tolerated without any serious side-effects. The current review embodies an in-depth discussion of albumin nanoparticles with respect to types, formulation aspects, major outcomes of in vitro and in vivo investigations as well as site-specific drug targeting using various ligands modifying the surface of albumin nanoparticles with special insights to the field of oncology. Specialized nanotechnological techniques like desolvation, emulsification, thermal gelation and recently nano-spray drying, nab-technology and self-assembly that have been investigated for fabrication of albumin nanoparticles, are also discussed. Nanocomplexes of albumin with other components in the area of drug delivery are also included in this review.
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Affiliation(s)
- Ahmed O Elzoghby
- Department of Industrial Pharmacy, Faculty of Pharmacy, Alexandria University, El-Khartoum Square, Azarita, Alexandria 21521, Egypt.
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Wang L, Liu Z, Liu D, Liu C, Juan Z, Zhang N. Docetaxel-loaded-lipid-based-nanosuspensions (DTX-LNS): preparation, pharmacokinetics, tissue distribution and antitumor activity. Int J Pharm 2011; 413:194-201. [PMID: 21540085 DOI: 10.1016/j.ijpharm.2011.04.023] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2011] [Revised: 04/12/2011] [Accepted: 04/13/2011] [Indexed: 11/17/2022]
Abstract
The purpose of the study was to design lipid-based-nanosuspensions (LNS) for Docetaxel (DTX) without Tween 80 for clinical intravenous administration (i.v.). DTX-LNS were prepared by high pressure homogenization method, and then lyophilization was carried out to improve the stability. The physical-chemical properties in terms of particle size, size distribution, zeta potential and morphology were evaluated, respectively. The in vitro cytotoxic activity was assessed by MTT against SKOV-3 and malignant melanoma B16 cells. The in vivo pharmacokinetics, tissue distribution as well as antitumor efficacy were investigated in B16 melanoma-bearing Kunming mice. The particle size and zeta potential of DTX-LNS were (200.0 ± 3.42)nm and (-11.15 ± 0.99)mV, respectively. Compared with Duopafei, it was shown that DTX-LNS exhibited higher antitumor efficacy by reducing tumor volume (P<0.05) and increasing survival rate in B16 melanoma-bearing mice and strongly reduced the anticancer drug toxicity. The results of biodistribution studies clearly indicated the superiority of DTX-LNS to Duopafei in increasing the accumulation of DTX within tumor and the organs rich in macrophages (liver, lungs and spleen), while, the drug concentration in heart and kidney decreased. Together these results suggested that DTX-LNS could effectively inhibit tumor growth, reduce toxicity during the therapeutic procedure and hold the potential to be an appropriate choice for the clinical administration of DTX.
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Affiliation(s)
- Lili Wang
- School of Pharmaceutical Science, Shandong University, 44 Wenhua Xi Road, Ji'nan 250012, Shandong Province, China
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Liu R, Li D, He B, Xu X, Sheng M, Lai Y, Wang G, Gu Z. Anti-tumor drug delivery of pH-sensitive poly(ethylene glycol)-poly(L-histidine-)-poly(L-lactide) nanoparticles. J Control Release 2011; 152:49-56. [PMID: 21397642 DOI: 10.1016/j.jconrel.2011.02.031] [Citation(s) in RCA: 124] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2010] [Revised: 02/09/2011] [Accepted: 02/28/2011] [Indexed: 10/18/2022]
Abstract
pH-sensitive poly(ethylene glycol)-poly(L-histidine)-poly(L-lactide) (PEG-PH-PLLA) nanoparticles were prepared and used as carriers for anti-tumor drug delivery. The morphology and properties of the nanoparticles such as pH sensitivity, zeta potential and mean diameters were investigated. The cytotoxicity of PEG-PH-PLLA nanoparticles was evaluated. Doxorubicin (DOX) was encapsulated in the nanoparticles to explore the release profile. The drug-loaded nanoparticles were incubated with HepG2 cells to study the in vitro anti-tumor effect. The results showed the sizes of both blank nanoparticles and drug-loaded nanoparticles in pH 7.4 were smaller than those of nanoparticles in pH 5.0, and the mean diameter of drug-loaded nanoparticles was much bigger than that of blank nanoparticles. The PEG-PH-PLLA nanoparticles were nontoxic to both NIH 3T3 fibroblasts and HepG2 cells. The release profile showed that the release of DOX in pH 5.0 was much faster than that in pH 7.4. The in vitro experiments demonstrated that the anti-tumor effect of drug-loaded nanoparticles was preferable to free doxorubicin. The pH-sensitive PEG-PH-PLLA nanoparticles are promising carriers for anti-tumor drug delivery.
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Affiliation(s)
- Rong Liu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
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Gao H, Li M, Wu Y. Novel amphiphilic dextran copolymers nanoparticles for delivery of doxorubicin. J Appl Polym Sci 2010. [DOI: 10.1002/app.33459] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Lee ES, Oh YT, Youn YS, Nam M, Park B, Yun J, Kim JH, Song HT, Oh KT. Binary mixing of micelles using Pluronics for a nano-sized drug delivery system. Colloids Surf B Biointerfaces 2010; 82:190-5. [PMID: 20850281 DOI: 10.1016/j.colsurfb.2010.08.033] [Citation(s) in RCA: 95] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2010] [Revised: 08/12/2010] [Accepted: 08/23/2010] [Indexed: 11/29/2022]
Abstract
Pluronics with different structural compositions and properties are used for several applications, including drug delivery systems. We developed a binary mixing system with two Pluronics, L121/P123, as a nano-sized drug delivery carrier. The lamellar-forming Pluronic L121 (0.1 wt%) was incorporated with Pluronic P123 to produce nano-sized dispersions (in case of 0.1 and 0.5 wt% P123) with high stability due to Pluronic P123 and high solubilization capacity due to Pluronic L121. The binary systems were spherical and less than 200-nm diameter, with high thermodynamic stability (at least 2 weeks) in aqueous solution. The CMC of the binary system was located in the middle of the CMC of each polymer. In particular, the solubilization capacity of the binary system (0.1/0.1 wt%) was higher than mono-systems of P123. The main advantage of binary systems is overcoming limitations of mono systems to allow tailored mixing of block copolymers with different physicochemical characteristics. These nano-sized systems may have potential as anticancer drug delivery systems with simple preparation method, high stability, and high loading capacity.
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Affiliation(s)
- Eun Seong Lee
- Division of Biotechnology, The Catholic University of Korea, 43-1 Yeokgok 2-dong, Wonmi-gu, Bucheon-si, Gyeonggi-do 420-743, Republic of Korea
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Physiochemical Properties of Binary Pluronic Systems for Reversal of Multi-drug Resistant (MDR) Cancers. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2010. [DOI: 10.4333/kps.2010.40.4.255] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Ahn YS, Baik HJ, Lee BR, Lee ES, Oh KT, Lee DH, Youn YS. Preparation of multifunctional polymeric micelles for antiviral treatment. Macromol Res 2010. [DOI: 10.1007/s13233-010-0802-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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AlHusban F, Perrie Y, Mohammed AR. Formulation and characterisation of lyophilised rapid disintegrating tablets using amino acids as matrix forming agents. Eur J Pharm Biopharm 2010; 75:254-62. [DOI: 10.1016/j.ejpb.2010.03.012] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2010] [Revised: 03/18/2010] [Accepted: 03/19/2010] [Indexed: 12/19/2022]
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Thiele J, Steinhauser D, Pfohl T, Förster S. Preparation of monodisperse block copolymer vesicles via flow focusing in microfluidics. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:6860-6863. [PMID: 20121049 DOI: 10.1021/la904163v] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
We demonstrate that microfluidic flow devices enable a rapid, continuous, well-reproducible and size-controlled preparation of unilamellar block copolymer vesicles. The PDMS-based microfluidic device consists of perpendicularly crossed channels allowing hydrodynamic flow focusing of an ethanolic block copolymer solution in a stream of water. By altering the flow rate ratio in the water and ethanolic inlet channels, the vesicle size can be tuned over a large size range from 40 nm to 2 microm without subsequent processing steps manipulating size and shell characteristics. The ability of tuning the vesicle mean size over a range of several orders of magnitude with the possibility of in situ encapsulation of active ingredients creates new opportunities for the preparation of tailored drug delivery systems in science, medicine and industry.
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Affiliation(s)
- Julian Thiele
- Institute of Physical Chemistry, University of Hamburg, D-20146 Hamburg, Germany
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Zu Y, Zhang Y, Zhao X, Zhang Q, Liu Y, Jiang R. Optimization of the preparation process of vinblastine sulfate (VBLS)-loaded folate-conjugated bovine serum albumin (BSA) nanoparticles for tumor-targeted drug delivery using response surface methodology (RSM). Int J Nanomedicine 2009; 4:321-33. [PMID: 20054435 PMCID: PMC2802044 DOI: 10.2147/ijn.s8501] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2009] [Indexed: 11/23/2022] Open
Abstract
Response surface methodology (RSM) was used to optimize the process of preparing bovine serum albumin (BSA) nanoparticles by desolvation, then the resulting BSA nanoparticles (BSANPs) were conjugated with folate to produce a drug carrier system that can specifically target tumors. The anticancer drug, vinblastine sulfate (VBLS), was loaded to this tumor-specific drug carrier system for the purpose of overcoming the nonspecific targeting characteristics and side effects of the drug. A central composite design was applied for modeling the process, which was composed of four independent variables, namely BSA concentration, the rate of adding ethanol (ethanol rate), ethanol amount, and the degree of crosslinking. The mean particle size and residual amino groups of the BSANPs were chosen as response variables. The interactive effects of the four independent variables on the response variables were studied. The characteristics of the nanoparticles; such as amount of folate conjugation, drug entrapment efficiency, drug-loading efficiency, surface morphology and release kinetics in vitro were investigated. Optimum conditions for preparing desired BSANPs, with a mean particle size of 156.6 nm and residual amino groups of 668.973 nM/mg, were obtained. The resulting folate-conjugated BSANPs (FA-BSANPs) showed a drug entrapment efficiency of 84.83% and drug-loading efficiency of 42.37%, respectively, and the amount of folate conjugation was 383.996 μM/g BSANPs. The results of this study indicate that using FA-BSANPs as a drug carrier system could be effective in targeting VBLS-sensitive tumors in the future.
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Affiliation(s)
- Yuangang Zu
- Key Laboratory of Forest Plant Ecology, Northeast Forestry University, Ministry of Education, Harbin, Heilongjiang, China.
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Guo XD, Zhang LJ, Chen Y, Qian Y. Core/shell pH-sensitive micelles self-assembled from cholesterol conjugated oligopeptides for anticancer drug delivery. AIChE J 2009. [DOI: 10.1002/aic.12119] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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