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Yang J, Jia L, He Z, Wang Y. Recent advances in SN-38 drug delivery system. Int J Pharm 2023; 637:122886. [PMID: 36966982 DOI: 10.1016/j.ijpharm.2023.122886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 03/06/2023] [Accepted: 03/21/2023] [Indexed: 03/30/2023]
Abstract
DNA topoisomerase I plays a key role in lubricatingthe wheels of DNA replication or RNA transcription through breaking and reconnecting DNA single-strand. It is widely known that camptothecin and its derivatives (CPTs) have inhibitory effects on topoisomerases I, and have obtained some clinical benefits in cancer treatment. The potent cytotoxicity makes 7-ethyl-10-hydroxycamptothecin (SN-38) become a brilliant star among these derivatives. However, some undesirable physical and chemical properties of this compound, including poor solubility and stability, seriously hinder its effective delivery to tumor sites. In recent years, strategies to alleviate these defects have aroused extensive research interest. By focusing on the loading mechanism, basic nanodrug delivery systems with SN-38 loaded, like nanoparticles, liposomes and micelles, are demonstrated here. Additionally, functionalized nanodrug delivery systems of SN-38 including prodrug and active targeted nanodrug delivery systems and delivery systems designed to overcome drug resistance are also reviewed. At last, challenges for future research in formulation development and clinical translation of SN-38 drug delivery system are discussed.
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2
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Nasongkla N, Tuchinda P, Munyoo B, Eawsakul K. Preparation and Characterization of MUC-30-Loaded Polymeric Micelles against MCF-7 Cell Lines Using Molecular Docking Methods and In Vitro Study. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2021; 2021:5597681. [PMID: 34135981 PMCID: PMC8179782 DOI: 10.1155/2021/5597681] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 05/12/2021] [Accepted: 05/21/2021] [Indexed: 12/18/2022]
Abstract
MUC-30 is a hydrophobic compound which is active against the MCF-7 cancer cell line. In this study, MUC-30 was loaded in polymeric micelles to improve the water solubility and release rate. For prolonged MUC-30 release, MUC-30 was encapsulated in polymeric micelles using PEG-b-PLA and PEG-b-PCL as materials. Micelles prepared with 1 : 9 w per w ratios by film hydration achieved the highest entrapment efficiency (EE%). The EE% of MUC-30-loaded PEG-b-PCL micelles was approximately 30% greater than that of PEG-b-PLA micelles, due to the different H-bond formations between MUC-30 and the polymer membrane (PCL, 4; PLA, 3). The cytotoxic activity of MUC-30 against EGFR theoretically presented 399.31 nM (IC50 = 282.26 ng/mL) by molecular docking. In vitro cytotoxic activity of MUC-30 was confirmed by MTT assay. MUC-30 (IC50 = 11 ± 0.39 ng/mL) showed three-fold higher activity over MUC-30-loaded PEG-b-PLA micelles (IC50 = 37 ± 1.18 ng/mL) and two-fold higher over PEG-b-PCL micelles (IC50 = 75 ± 3.97 ng/mL). This was due to the higher release rate of MUC-30 from PEG-b-PLA micelles compared to PEG-b-PCL micelles. Therefore, MUC-30-loaded PEG-b-PLA micelles could be a promising candidate for breast cancer chemotherapy.
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Affiliation(s)
- Norased Nasongkla
- Department of Biomedical Engineering, Faculty of Engineering, Mahidol University, Nakhon Pathom 73170, Thailand
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahidol University, Nakhon Bangkok 10400, Thailand
| | - Patoomratana Tuchinda
- Excellence Center for Drug Discovery (ECDD), Faculty of Science, Mahidol University, Bangkok 10400, Thailand
| | - Bamroong Munyoo
- Department of Chemistry, Faculty of Science, Mahidol University, Bangkok 10400, Thailand
| | - Komgrit Eawsakul
- Department of Biomedical Engineering, Faculty of Engineering, Mahidol University, Nakhon Pathom 73170, Thailand
- School of Medicine, Walailak University, Nakhon Si Thammarat 80160, Thailand
- School of Allied Health Sciences and Research Excellence Center for Innovation and Health Products (RECIHP), Walailak University, Nakhon Si Thammarat 80160, Thailand
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Hydrolytic stabilization of irinotecan active metabolite (SN38) against physiologic pH through self-assembly of conjugated poly (2-oxazoline) - poly (l-amino acid) block copolymer: A-synthesis and physicochemical characterization. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2020.101933] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Sánchez-Giraldo V, Monsalve Y, Palacio J, Mendivil-Perez M, Sierra L, Velez-Pardo C, López BL, Jiménez-Del-Rio M. Role of a novel (−)-epigallocatechin-3-gallate delivery system on the prevention against oxidative stress damage in vitro and in vivo model of Parkinson's disease. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2019.101466] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Thedrattanawong C, Thanapongpibul C, Nittayacharn P, Nasongkla N. Reduction the Initial-Burst Release of Doxorubicin from Polymeric Depot as a Local Drug Delivery System for Cancer Treatment. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2018; 2018:4221-4224. [PMID: 30441285 DOI: 10.1109/embc.2018.8513258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A sustained release that can be controllable is an ultimate goal for the delivery of drugs in drug delivery systems including in situ depots. However, one of the major persistent problems in the controlled release delivery system development is the initial burst release of the loaded drug which can minimize the effectiveness of the system. Our primary research objective was to reduce the initial burst release of Doxorubicin (Dox) encapsulated in polymeric depots by incorporating deprotonated Dox into the depots. The drug release profile and cytotoxicity effect of various concentrations of hydrophobic Dox-loaded depots were studied. In the first 24 hours after forming the depots, the release of Dox reached 82.9 ± 0.6% in Dox·HCl depots. Interestingly, the initial burst releases of 5, 10 and 15% wt/wt hydrophobic Dox-loaded PLEC depots were reduced to 48.5 ± 10.0, 29.2 ± 7.8 and 18.9 ± 0.9%, respectively. Moreover, 15% hydrophobic Dox-loaded PLEC depots maintained their stability up to 14 days and their in vitro cytotoxicity ability against human hepatocellular carcinoma cell line (HepG2). Taken together, this study suggested that the presence of hydrophobic Dox in Dox-loaded PLEC depots reduced the initial burst release phenomenon of the drug and the depots still maintained their function as a local drug delivery system.
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Castillo PM, Jimenez-Ruiz A, Carnerero JM, Prado-Gotor R. Exploring Factors for the Design of Nanoparticles as Drug Delivery Vectors. Chemphyschem 2018; 19:2810-2828. [DOI: 10.1002/cphc.201800388] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Indexed: 12/27/2022]
Affiliation(s)
- Paula M. Castillo
- Physical Chemistry Department. Faculty of Chemistry; University of Seville; C/Prof. García González, s/n 41012 Sevilla Spain
| | - Aila Jimenez-Ruiz
- Physical Chemistry Department. Faculty of Chemistry; University of Seville; C/Prof. García González, s/n 41012 Sevilla Spain
| | - Jose M. Carnerero
- Physical Chemistry Department. Faculty of Chemistry; University of Seville; C/Prof. García González, s/n 41012 Sevilla Spain
| | - Rafael Prado-Gotor
- Physical Chemistry Department. Faculty of Chemistry; University of Seville; C/Prof. García González, s/n 41012 Sevilla Spain
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Manaspon C, Chaimongkolnukul K, Kengkoom K, Boongird A, Hongeng S, Chairoungdua A, Nasongkla N. Time-dependent distribution of SN-38 from injectable polymeric depots in brain tumor model. Biomed Phys Eng Express 2018. [DOI: 10.1088/2057-1976/aad396] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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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: 10] [Impact Index Per Article: 1.4] [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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Yang GZ, Li JJ, Yu DG, He MF, Yang JH, Williams GR. Nanosized sustained-release drug depots fabricated using modified tri-axial electrospinning. Acta Biomater 2017; 53:233-241. [PMID: 28137657 DOI: 10.1016/j.actbio.2017.01.069] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2016] [Revised: 01/18/2017] [Accepted: 01/25/2017] [Indexed: 11/15/2022]
Abstract
Nanoscale drug depots, comprising a drug reservoir surrounded by a carrier membrane, are much sought after in contemporary pharmaceutical research. Using cellulose acetate (CA) as a filament-forming polymeric matrix and ferulic acid (FA) as a model drug, nanoscale drug depots in the form of core-shell fibers were designed and fabricated using a modified tri-axial electrospinning process. This employed a solvent mixture as the outer working fluid, as a result of which a robust and continuous preparation process could be achieved. The fiber-based depots had a linear morphology, smooth surfaces, and an average diameter of 0.62±0.07μm. Electron microscopy data showed them to have clear core-shell structures, with the FA encapsulated inside a CA shell. X-ray diffraction and IR spectroscopy results verified that FA was present in the crystalline physical form. In vitro dissolution tests revealed that the fibers were able to provide close to zero-order release over 36h, with no initial burst release and minimal tailing-off. The release properties of the depot systems were much improved over monolithic CA/FA fibers, which exhibited a significant burst release and also considerable tailing-off at the end of the release experiment. Here we thus demonstrate the concept of using modified tri-axial electrospinning to design and develop new types of heterogeneous nanoscale biomaterials. STATEMENT OF SIGNIFICANCE Nanoscale drug depots with a drug reservoir surrounded by a carrier are highly attractive in biomedicine. A cellulose acetate based drug depot was investigated in detail, starting with the design of the nanostructure, and moving through its fabrication using a modified tri-axial electrospinning process and a series of characterizations. The core-shell fiber-based drug depots can provide a more sustained release profile with no initial burst effect and less tailing-off than equivalent monolithic drug-loaded fibers. The drug release mechanisms are also distinct in the two systems. This proof-of-concept work can be further expanded to conceive a series of new structural biomaterials with improved or new functional performance.
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Affiliation(s)
- Guang-Zhi Yang
- School of Materials Science & Engineering, University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai 200093, China
| | - Jiao-Jiao Li
- School of Materials Science & Engineering, University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai 200093, China
| | - Deng-Guang Yu
- School of Materials Science & Engineering, University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai 200093, China.
| | - Mei-Feng He
- School of Materials Science & Engineering, University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai 200093, China
| | - Jun-He Yang
- School of Materials Science & Engineering, University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai 200093, China
| | - Gareth R Williams
- UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, UK.
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Macroporous acrylamide phantoms improve prediction of in vivo performance of in situ forming implants. J Control Release 2016; 243:225-231. [PMID: 27742445 DOI: 10.1016/j.jconrel.2016.10.009] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Revised: 10/02/2016] [Accepted: 10/11/2016] [Indexed: 02/06/2023]
Abstract
In situ forming implants (ISFIs) have shown promise as a sustained, local drug delivery system for therapeutics in a variety of applications. However, development of ISFIs has been hindered by poor correlation between in vitro study results and in vivo performance. In contrast to oral dosage forms, there is currently no clear consensus on a standard for in vitro drug dissolution studies for parenteral formulations. Recent studies have suggested that the disparity between in vivo and in vitro behavior of phase-inverting ISFIs may be, in part, due to differences in injection site stiffness. Accordingly, this study aimed to create acrylamide-based hydrogel phantoms of varying porosity and stiffness, which we hypothesized would better predict in vivo performance. Implant microstructure and shape were found to be dependent on the stiffness of the phantoms, while drug release was found to be dependent on both phantom porosity and stiffness. Specifically, SEM analysis revealed that implant porosity and interconnectivity decreased with increasing phantom stiffness and better mimicked the microstructure seen in vivo. Burst release of drug increased from 31% to 43% when in standard acrylamide phantoms vs macroporous phantoms (10kPa), improving the correlation to the burst release seen in vivo. Implants in 30kPa macroporous phantoms had the best correlation with in vivo burst release, significantly improving (p<0.05) the burst release relative to in vivo from 64%, using a standard PBS dissolution method, to 92%. These findings confirm that implant behavior is affected by injection site stiffness. Importantly, with appropriate optimization and validation, hydrogel phantoms such as the one investigated here could be used to improve the in vitro-in vivo correlation of in situ forming implant formulations and potentially augment their advancement to clinical use.
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Manaspon C, Nasongkla N, Chaimongkolnukul K, Nittayacharn P, Vejjasilpa K, Kengkoom K, Boongird A, Hongeng S. Injectable SN-38-loaded Polymeric Depots for Cancer Chemotherapy of Glioblastoma Multiforme. Pharm Res 2016; 33:2891-2903. [DOI: 10.1007/s11095-016-2011-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Accepted: 07/29/2016] [Indexed: 01/19/2023]
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Nasongkla N, Nittayacharn P, Rotjanasitthikit A, Pungbangkadee K, Manaspon C. Paclitaxel-loaded polymeric depots as injectable drug delivery system for cancer chemotherapy of hepatocellular carcinoma. Pharm Dev Technol 2016; 22:652-658. [PMID: 27056587 DOI: 10.3109/10837450.2016.1163389] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
In this work, paclitaxel-encapsulated polymeric depots were prepared and characterized as drug delivery system for cancer chemotherapy against hepatocellular carcinoma. Effects of different parameters, including drug-loading content, polymer concentration and depot weight on depot formation, percentage of sustained-release taxol and drug release profile were evaluated. Paclitaxel-loaded depots were successfully formed at the polymer concentration above 25% w/v. For all formulations, paclitaxel could be encapsulated with very high percentage of sustained-release taxol (>90%). The release rate of paclitaxel from depots could be controlled by the amount of drug-loading content, polymer concentration and depot weight. Cytotoxicity against liver cancer cell line, HepG2, was evaluated by medium extraction method. Paclitaxel releasing from depots showed cytotoxic effect against HepG2 at different incubation times, whereas blank depots exhibited no cytotoxicity.
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Affiliation(s)
- Norased Nasongkla
- a Department of Biomedical Engineering, Faculty of Engineering , Mahidol University , Nakorn Pathom , Thailand
| | - Pinunta Nittayacharn
- a Department of Biomedical Engineering, Faculty of Engineering , Mahidol University , Nakorn Pathom , Thailand
| | - Apichada Rotjanasitthikit
- a Department of Biomedical Engineering, Faculty of Engineering , Mahidol University , Nakorn Pathom , Thailand
| | - Korawich Pungbangkadee
- a Department of Biomedical Engineering, Faculty of Engineering , Mahidol University , Nakorn Pathom , Thailand
| | - Chawan Manaspon
- a Department of Biomedical Engineering, Faculty of Engineering , Mahidol University , Nakorn Pathom , Thailand
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Essa S, Daoud J, Lafleur M, Martel S, Tabrizian M. SN-38 active loading in poly(lactic-co-glycolic acid) nanoparticles and assessment of their anticancer properties on COLO-205 human colon adenocarcinoma cells. J Microencapsul 2015; 32:784-93. [PMID: 26381056 DOI: 10.3109/02652048.2015.1081416] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
SN-38 is a highly effective drug against many cancers. The development of an optimal delivery system for SN-38 is extremely challenging due to its low solubility and labile lactone ring. Herein, SN-38 encapsulated in poly(D,L-lactide-co-glycolide) nanoparticles (NPs) is introduced to enhance its solubility, stability and cellular uptake. SN-38-loaded NPs prepared by spontaneous emulsification solvent diffusion (SESD) method had an average diameter of 310 nm, a zeta potential of -9.69 mV and a loading efficiency of 71%. They were able to protect the active lactone ring of SN-38 against inactivation under physiological condition. A colorectal adenocarcinoma cell line (COLO-205) was used to assess the NPs effects on cytotoxicity and cellular uptake. Result showed a significant decreased cell proliferation and cell apoptosis. These results suggest that these SN-38-loaded NPs can be an effective delivery system for the treatment of colon cancer and potentially for other types of cancers.
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Affiliation(s)
- Sherief Essa
- a Department of Biomedical Engineering , Faculty of Medicine, McGill University , Montreal , Canada
| | - Jamal Daoud
- a Department of Biomedical Engineering , Faculty of Medicine, McGill University , Montreal , Canada
| | - Michel Lafleur
- b Department of Chemistry , University of Montreal , Montreal , Canada
| | - Sylvain Martel
- c Department of Computer Engineering , Ecole Polytechnique of Montreal , Montreal , Canada , and
| | - Maryam Tabrizian
- a Department of Biomedical Engineering , Faculty of Medicine, McGill University , Montreal , Canada .,d Faculty of Dentistry , sMcGill University , Montreal , Canada
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Vejjasilpa K, Nasongkla N, Manaspon C, Larbcharoensub N, Boongird A, Hongeng S, Israsena N. Antitumor efficacy and intratumoral distribution of SN-38 from polymeric depots in brain tumor model. Exp Biol Med (Maywood) 2015; 240:1640-7. [PMID: 26080460 DOI: 10.1177/1535370215590819] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2015] [Accepted: 05/13/2015] [Indexed: 11/16/2022] Open
Abstract
We investigate antitumor efficacy and 2D and 3D intratumoral distribution of 7-ethyl-10-hydroxycamptothecin (SN-38) from polymeric depots inside U-87MG xenograft tumor model in nude mice. Results showed that polymeric depots could be used to administer and controlled release of a large amount of SN-38 directly to the brain tumor model. SN-38 released from depots suppressed tumor growth, where the extent of suppression greatly depended on doses and the number of depot injections. Tumor suppression of SN-38 from depots was three-fold higher in animals which received double injections of depots at high dose (9.7 mg of SN-38) compared to single injection (2.2 mg). H&E staining of tumor sections showed that the area of tumor cell death/survival of the former group was two-fold higher than those of the latter group. Fluorescence imaging based on self-fluorescent property of SN-38 was used to evaluate the intratumoral distribution of this drug compared to histological results. The linear correlation between fluorescence intensity and the amount of SN-38 allowed quantitative determination of SN-38 in tumor tissues. Results clearly showed direct correlation between the amount of SN-38 in tumor sections and cancer cell death. Moreover, 3D reconstruction representing the distribution of SN-38 in tumors was obtained. Results from this study suggest the rationale for intratumoral drug administration and release of drugs inside tumor, which is necessary to design drug delivery systems with efficient antitumor activity.
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Affiliation(s)
- Ketpat Vejjasilpa
- 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
| | - Chawan Manaspon
- Department of Biomedical Engineering, Faculty of Engineering, Mahidol University, Nakorn Pathom 73170, Thailand
| | - Noppadol Larbcharoensub
- Department of Pathology, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok 10400, Thailand
| | - Atthaporn Boongird
- Department of Surgery, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok 10400, Thailand
| | - Suradej Hongeng
- Department of Paediatrics, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok 10400, Thailand
| | - Nipan Israsena
- Department of Pharmacology, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
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Nittayacharn P, Manaspon C, Hongeng S, Nasongkla N. HPLC analysis and extraction method of SN-38 in brain tumor model after injected by polymeric drug delivery system. Exp Biol Med (Maywood) 2014; 239:1619-29. [PMID: 24990485 DOI: 10.1177/1535370214539227] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
SN-38 is a highly potent anticancer drug but its poor solubility in aqueous solvent and adverse side effects limit clinical applications. To overcome these limitations, SN-38-loaded-injectable drug delivery depots have been intratumorally administered in xenograft tumor model in nude mice. The extraction and high performance liquid chromatography (HPLC) were performed in order to determine the amount of SN-38 inside tumors. SN-38 was extracted from tumors using DMSO. HPLC analysis was validated and resulted in linearity over the concentration range from 0.03 to 150 µg/mL (r(2) ≥ 0.998). Lower limit of detection (LLOD) and lower limit of quantitation (LLOQ) were 0.308 µg/mL and 1.02 µg/mL, respectively. The extraction efficiency (% recovery) of SN-38 in porcine tissues was similar to that of tumors which provided more than 90% recovery in all concentrations. Moreover, the variability of precision and accuracy within and between-day were less than 15%. Therefore, this extraction and HPLC protocol was applied to determine the amount of SN-38 in tumors. Results show higher remaining amount of SN-38 in tumor from SN-38-loaded polymeric depots than that of SN-38 solution. These results reveal that SN-38-loaded polymeric depots can prevent the leakage of free-drug out of tumors and can sustain higher level of SN-38 inside tumor. Thus, the therapeutic efficacy can be elevated by SN-38-loaded polymeric depots.
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Affiliation(s)
- Pinunta Nittayacharn
- Department of Biomedical Engineering, Faculty of Engineering, Mahidol University, Nakorn Pathom 73170, Thailand Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahidol University, Bangkok 10400, Thailand
| | - Chawan Manaspon
- Department of Biomedical Engineering, Faculty of Engineering, Mahidol University, Nakorn Pathom 73170, Thailand
| | - Suradej Hongeng
- Department of Pediatrics, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok 10400, Thailand
| | - Norased Nasongkla
- Department of Biomedical Engineering, Faculty of Engineering, Mahidol University, Nakorn Pathom 73170, Thailand Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahidol University, Bangkok 10400, Thailand
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Bala V, Rao S, Boyd BJ, Prestidge CA. Prodrug and nanomedicine approaches for the delivery of the camptothecin analogue SN38. J Control Release 2013; 172:48-61. [PMID: 23928356 DOI: 10.1016/j.jconrel.2013.07.022] [Citation(s) in RCA: 150] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2013] [Revised: 07/19/2013] [Accepted: 07/20/2013] [Indexed: 10/26/2022]
Abstract
SN38 (7-ethyl-10-hydroxy camptothecin) is a prominent and efficacious anticancer agent. It is poorly soluble in both water and pharmaceutically approved solvents; therefore, the direct formulation of SN38 in solution form is limited. Currently, the water soluble prodrug of SN38, irinotecan (CPT-11), is formulated as a low pH solution and is approved for chemotherapy. However, CPT-11, along with most other water-soluble prodrugs shows unpredictable inter-patient conversion to SN38 in vivo, instability in the physiological environment and variable dose-related toxicities. More recently, macromolecular prodrugs (i.e. EZN-2208, IMMU-130) and nanomedicine formulations (i.e. nanoemulsions, polymeric micelles, lipid nanocapsule/nanoparticle, and liposomes) of SN38 have been investigated for improved delivery to cancer cells and tissues. Specifically, these carriers can take advantage of the EPR effect to direct drug preferentially to tumour tissues, thereby substantially improving efficacy and minimising side effects. Furthermore, oral delivery has been shown to be possible in preclinical results using nanomedicine formulations (i.e. dendrimers, lipid nanocapsules, polymeric micelles). This review summarizes the recent advances for the delivery of SN38 with a focus on macromolecular prodrugs and nanomedicines.
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Affiliation(s)
- Vaskor Bala
- Ian Wark Research Institute, University of South Australia, Mawson Lakes, SA, Australia
| | - Shasha Rao
- Ian Wark Research Institute, University of South Australia, Mawson Lakes, SA, Australia
| | - Ben J Boyd
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University (Parkville Campus), 381 Royal Parade, Parkville, VIC, Australia
| | - Clive A Prestidge
- Ian Wark Research Institute, University of South Australia, Mawson Lakes, SA, Australia.
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Tri-component copolymer rods as an implantable reservoir drug delivery system for constant and controllable drug release rate. JOURNAL OF POLYMER RESEARCH 2012. [DOI: 10.1007/s10965-012-0036-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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