101
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Sadeghi M, Keshavarz Shahbaz S, Dehnavi S, Koushki K, Sankian M. Current possibilities and future perspectives for improving efficacy of allergen-specific sublingual immunotherapy. Int Immunopharmacol 2021; 101:108350. [PMID: 34782275 DOI: 10.1016/j.intimp.2021.108350] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 11/02/2021] [Accepted: 11/04/2021] [Indexed: 10/19/2022]
Abstract
Allergen-specific sublingual immunotherapy (SLIT), a safe and efficient route for treating type I hypersensitivity disorders, requires high doses of allergens. SLIT is generally performed without adjuvants and delivery systems. Therefore, allergen formulation with appropriate presentation platforms results in improved allergen availability, targeting the immune cells, inducing regulatory immune responses, and enhancing immunotherapy's efficacy while decreasing the dose of the allergen. In this review, we discuss the adjuvants and delivery systems that have been applied as allergen-presentation platforms for SLIT. These adjuvants include TLRs ligands, 1α, 25-dihydroxy vitamin D3, galectin-9, probiotic and bacterial components that provoke allergen-specific helper type-1 T lymphocytes (TH1), and regulatory T cells (Tregs). Another approach is encapsulation or adsorption of the allergens into a particulate vector system to facilitate allergen capture by tolerogenic dendritic cells. Also, we proposed strategies to increasing the efficacy of SLIT via new immunopotentiators and carrier systems in the future.
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Affiliation(s)
- Mahvash Sadeghi
- Department of Immunology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
| | - Sanaz Keshavarz Shahbaz
- Cellular and Molecular Research Center, Research Institute for Prevention of Non-communicable Disease, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Sajad Dehnavi
- Department of Immunology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Khadijeh Koushki
- Hepatitis Research Center, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Mojtaba Sankian
- Immunobiochemistry Lab, Immunology Research Center, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
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102
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Han M, Beon J, Lee JY, Oh SS. Systematic Combination of Oligonucleotides and Synthetic Polymers for Advanced Therapeutic Applications. Macromol Res 2021; 29:665-680. [PMID: 34754286 PMCID: PMC8568687 DOI: 10.1007/s13233-021-9093-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 08/22/2021] [Accepted: 09/25/2021] [Indexed: 11/16/2022]
Abstract
The potential of oligonucleotides is exceptional in therapeutics because of their high safety, potency, and specificity compared to conventional therapeutic agents. However, many obstacles, such as low in vivo stability and poor cellular uptake, have hampered their clinical success. Use of polymeric carriers can be an effective approach for overcoming the biological barriers and thereby maximizing the therapeutic efficacy of the oligonucleotides due to the availability of highly tunable synthesis and functional modification of various polymers. As loaded in the polymeric carriers, the therapeutic oligonucleotides, such as antisense oligonucleotides, small interfering RNAs, microRNAs, and even messenger RNAs, become nuclease-resistant by bypassing renal filtration and can be efficiently internalized into disease cells. In this review, we introduced a variety of systematic combinations between the therapeutic oligonucleotides and the synthetic polymers, including the uses of highly functionalized polymers responding to a wide range of endogenous and exogenous stimuli for spatiotemporal control of oligonucleotide release. We also presented intriguing characteristics of oligonucleotides suitable for targeted therapy and immunotherapy, which can be fully supported by versatile polymeric carriers.
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Affiliation(s)
- Moohyun Han
- Department of Materials Science and Engineering, Pohang University of Science Technology (POSTECH), Pohang, Gyeongbuk, 37673 Korea
| | - Jiyun Beon
- Department of Materials Science and Engineering, Pohang University of Science Technology (POSTECH), Pohang, Gyeongbuk, 37673 Korea
| | - Ju Young Lee
- Research Center for Bio-based Chemistry, Korea Research Institute of Chemical Technology (KRICT), Ulsan, 44429 Korea
| | - Seung Soo Oh
- Department of Materials Science and Engineering, Pohang University of Science Technology (POSTECH), Pohang, Gyeongbuk, 37673 Korea
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103
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Miao Y, Cui H, Dong Z, Ouyang Y, Li Y, Huang Q, Wang Z. Structural Evolution of Polyglycolide and Poly(glycolide -co-lactide) Fibers during In Vitro Degradation with Different Heat-Setting Temperatures. ACS OMEGA 2021; 6:29254-29266. [PMID: 34746613 PMCID: PMC8567347 DOI: 10.1021/acsomega.1c04974] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 10/05/2021] [Indexed: 06/13/2023]
Abstract
The structural evolution of polyglycolide (PGA) and poly(glycolide-co-lactide) (P(GA-co-LA)) with 8% LA content fibers with different heat-setting temperatures was investigated during in vitro degradation using WAXD, SAXS, and mechanical property tests. It was found that the PGA fiber was more susceptible to the degradation process than the P(GA-co-LA) fiber and a higher heat-setting temperature reduced the degradation rate of the two samples. The weight and mechanical properties of the samples showed a gradual decrease during degradation. We proposed that the degradation of PGA and P(GA-co-LA) fibers proceeded in four stages. A continuous increase in crystallinity during the early stage of degradation and a gradual decline during the later period indicated that preferential hydrolytic degradation occurred in the amorphous regions, followed by a further degradation in the crystalline regions. The cleavage-induced crystallization occurred during the later stage of degradation, contributing to an appreciable decrease in the long period and lamellar thickness of both PGA and P(GA-co-LA) samples. The introduction of LA units into the PGA skeleton reduced the difference in the degradation rate between the crystalline and amorphous regions, and they were simultaneously degraded in the early stage of degradation, leading to a degradation mechanism different from that of the PGA fiber.
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Affiliation(s)
- Yushuang Miao
- Ningbo
Key Laboratory of Specialty Polymers, School of Materials Science
and Chemical Engineering, Ningbo University, Ningbo 315211, China
| | | | - Zhimin Dong
- Ningbo
Key Laboratory of Specialty Polymers, School of Materials Science
and Chemical Engineering, Ningbo University, Ningbo 315211, China
| | - Yi Ouyang
- Department
of Radiation Oncology & State Key Laboratory of Oncology in South
China, Sun Yat-sen University Cancer Center, 651 Dongfeng East Road, Guangzhou 510060, China
| | - Yiguo Li
- Ningbo
Key Laboratory of Specialty Polymers, School of Materials Science
and Chemical Engineering, Ningbo University, Ningbo 315211, China
| | - Qing Huang
- China
Textile Academy, Beijing 100025, China
| | - Zongbao Wang
- Ningbo
Key Laboratory of Specialty Polymers, School of Materials Science
and Chemical Engineering, Ningbo University, Ningbo 315211, China
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104
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Fonseca M, Macedo AS, Lima SAC, Reis S, Soares R, Fonte P. Evaluation of the Antitumour and Antiproliferative Effect of Xanthohumol-Loaded PLGA Nanoparticles on Melanoma. MATERIALS (BASEL, SWITZERLAND) 2021; 14:6421. [PMID: 34771946 PMCID: PMC8585140 DOI: 10.3390/ma14216421] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 10/18/2021] [Accepted: 10/21/2021] [Indexed: 11/17/2022]
Abstract
Cutaneous melanoma is the deadliest type of skin cancer and current treatment is still inadequate, with low patient survival rates. The polyphenol xanthohumol has been shown to inhibit tumourigenesis and metastasization, however its physicochemical properties restrict its application. In this work, we developed PLGA nanoparticles encapsulating xanthohumol and tested its antiproliferative, antitumour, and migration effect on B16F10, malignant cutaneous melanoma, and RAW 264.7, macrophagic, mouse cell lines. PLGA nanoparticles had a size of 312 ± 41 nm and a PdI of 0.259, while achieving a xanthohumol loading of about 90%. The viability study showed similar cytoxicity between the xanthohumol and xanthohumol-loaded PLGA nanoparticles at 48 h with the IC50 established at 10 µM. Similar antimigration effects were observed for free and the encapsulated xanthohumol. It was also observed that the M1 antitumor phenotype was stimulated on macrophages. The ultimate anti-melanoma effect emerges from an association between the viability, migration and macrophagic phenotype modulation. These results display the remarkable antitumour effect of the xanthohumol-loaded PLGA nanoparticles and are the first advance towards the application of a nanoformulation to deliver xanthohumol to reduce adverse effects by currently employed chemotherapeutics.
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Affiliation(s)
- Magda Fonseca
- Department of Biomedicine, Faculty of Medicine, University of Porto, Al Prof Hernani Monteiro, 4200-319 Porto, Portugal; (M.F.); (R.S.)
- i3S, Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
| | - Ana S. Macedo
- LAQV, REQUIMTE, Department of Chemical Sciences-Applied Chemistry Lab, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal; (A.S.M.); (S.A.C.L.); (S.R.)
| | - Sofia A. Costa Lima
- LAQV, REQUIMTE, Department of Chemical Sciences-Applied Chemistry Lab, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal; (A.S.M.); (S.A.C.L.); (S.R.)
| | - Salette Reis
- LAQV, REQUIMTE, Department of Chemical Sciences-Applied Chemistry Lab, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal; (A.S.M.); (S.A.C.L.); (S.R.)
| | - Raquel Soares
- Department of Biomedicine, Faculty of Medicine, University of Porto, Al Prof Hernani Monteiro, 4200-319 Porto, Portugal; (M.F.); (R.S.)
- i3S, Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
| | - Pedro Fonte
- Center for Marine Sciences (CCMAR), University of Algarve, Gambelas Campus, 8005-139 Faro, Portugal
- Department of Chemistry and Pharmacy, Faculty of Sciences and Technology, University of Algarve, Gambelas Campus, 8005-139 Faro, Portugal
- iBB—Institute for Bioengineering and Biosciences, Department of Bioengineering, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal
- Associate Laboratory i4HB—Institute for Health and Bioeconomy at Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
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105
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Kim JH, Ryu CH, Chon CH, Kim S, Lee S, Maharjan R, Kim NA, Jeong SH. Three months extended-release microspheres prepared by multi-microchannel microfluidics in beagle dog models. Int J Pharm 2021; 608:121039. [PMID: 34450228 DOI: 10.1016/j.ijpharm.2021.121039] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 08/19/2021] [Accepted: 08/22/2021] [Indexed: 02/06/2023]
Abstract
To evaluate in vivo drug release profiles in beagle dogs, finasteride-loaded PLGA microspheres were prepared using a novel method of IVL-PPF Microsphere® microfluidic device. Briefly, the dispersed phase (PLGA and finasteride in dichloromethane) was mixed with the continuous phase (0.25% w/v PVA aqueous solution) in the parallelized microchannels. After lyophilization, the diameter of the microspheres was around 40 μm (PLGA 7502A or 5002A) and around 30 µm (PLGA/PLA02A mixture). Their CV and span values suggested a narrow size distribution in repeated batch preparations. The in vivo drug release from the PLGA microspheres exhibited three substantial phases: an initial burst, a moderate release, and then a plateau. The microspheres based on PLGA 7502A (75:25 co-polymer) demonstrated extended drug release for around 1 month with a minimized initial burst release compared to PLGA 5002A (50:50 co-polymer). Moreover, the in vivo drug release profile in beagle dogs was proportionally related to the amount of drug loading. Furthermore, the addition of PLA02A into the fabrication of the microsphere synergistically extended the drug release up to 3 months. These results demonstrated the value of this method to achieve uniform microspheres and extend the drug release properties with interpretative in vivo PK profiles.
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Affiliation(s)
- Ju Hee Kim
- Inventage Lab Inc, Seongnam, Gyeonggi 13438, Republic of Korea.
| | - Choong Ho Ryu
- Inventage Lab Inc, Seongnam, Gyeonggi 13438, Republic of Korea.
| | - Chan Hee Chon
- Inventage Lab Inc, Seongnam, Gyeonggi 13438, Republic of Korea.
| | - Seyeon Kim
- Inventage Lab Inc, Seongnam, Gyeonggi 13438, Republic of Korea.
| | - Sangno Lee
- Inventage Lab Inc, Seongnam, Gyeonggi 13438, Republic of Korea.
| | - Ravi Maharjan
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University, Gyeonggi 10326, Republic of Korea.
| | - Nam Ah Kim
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University, Gyeonggi 10326, Republic of Korea.
| | - Seong Hoon Jeong
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University, Gyeonggi 10326, Republic of Korea.
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106
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Bandiwadekar A, Jose J, Khayatkashani M, Habtemariam S, Khayat Kashani HR, Nabavi SM. Emerging Novel Approaches for the Enhanced Delivery of Natural Products for the Management of Neurodegenerative Diseases. J Mol Neurosci 2021; 72:653-676. [PMID: 34697770 DOI: 10.1007/s12031-021-01922-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 09/22/2021] [Indexed: 12/14/2022]
Abstract
Neurodegenerative diseases (NDs) such as Alzheimer's disease, Parkinson's disease, Huntington disease, amyotrophic lateral sclerosis, and prion disease affect any part of the brain. The complete mechanism of ND is unknown, but there are some molecular mechanism and chemical process. Natural compounds have better compatibility with the human body along with lesser side effects. Moreover, several studies showed that various natural compounds have significant neuroprotective, potent antioxidant, and anti-inflammatory properties, which are effective for treating the different type of ND. In ND, natural compounds act by various mechanisms such as preventing the generation of reactive oxygen species (ROS), eliminating destructed biomolecules before their accumulation affects cell metabolism, and improving the disease conditions. But due to the presence of the blood-brain barrier (BBB) layer and unfavorable pharmacokinetic properties of natural compounds, their delivery into the brain is limited. To minimize this problem and enhance drug delivery into the brain with an effective therapeutic dose, there is a need to develop a practical novel approach. The various studies showed that nanoformulations and microneedles (MN) containing natural compounds such as quercetin, curcumin, resveratrol, chrysin, piperine, ferulic acid, huperzine A, berberine, baicalein, hesperetin, and retinoic acid effectively improved many ND. In this review, the effect of such natural drug-loaded nanoformulation and MN patches on ND management is discussed, along with their merits and demerits. This review aims to introduce different novel approaches for enhancing natural drug delivery into the brain to manage various neurodegenerative diseases.
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Affiliation(s)
- Akshay Bandiwadekar
- Department of Pharmaceutics, NGSM Institute of Pharmaceutical Sciences (NGSMIPS), Nitte (Deemed To Be University), Mangalore, 575018, Karnataka, India
| | - Jobin Jose
- Department of Pharmaceutics, NGSM Institute of Pharmaceutical Sciences (NGSMIPS), Nitte (Deemed To Be University), Mangalore, 575018, Karnataka, India.
| | - Maryam Khayatkashani
- School of Iranian Traditional Medicine, Tehran University of Medical Sciences, 14155-6559, Tehran, Iran
| | - Solomon Habtemariam
- Pharmacognosy Research Laboratories and Herbal Analysis Services, University of Greenwich, Central Avenue, Chatham-Maritime, UK
| | - Hamid Reza Khayat Kashani
- Department of Neurosurgery, Imam Hossein Hospital, Shahid Beheshti University of Medical Sciences, 1617763141, Tehran, Iran
| | - Seyed Mohammad Nabavi
- Applied Biotechnology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
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107
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Comparison of Surface Functionalization of PLGA Composite to Immobilize Extracellular Vesicles. Polymers (Basel) 2021; 13:polym13213643. [PMID: 34771200 PMCID: PMC8587822 DOI: 10.3390/polym13213643] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 10/14/2021] [Accepted: 10/19/2021] [Indexed: 02/06/2023] Open
Abstract
Endothelialization by materials provides a promising approach for the rapid re-endothelialization of a cardiovascular implantation. Although previous studies have focused on improving endothelialization through the immobilization of bioactive molecules onto the surface of biodegradable implants, comparative studies of effective surface modification have not yet been reported. Here, we conducted a comparative study on the surface modification of poly(lactide-co-glycolide) (PLGA)-based composites to graft mesenchymal stem cell-derived extracellular vesicles (MSC-EVs) using three different materials, fibronectin (FN), polyethylenimine (PEI), and polydopamine (PDA), which have different bond strengths of ligand–receptor interaction, ionic bond, and covalent bond, respectively. Further in vitro analysis exhibited that MSC-EVs released from all modified films sustainably, but the MSC-EVs grafted onto the surface coated with PEI are more effective than other groups in increasing angiogenesis and reducing the inflammatory responses in endothelial cells. Therefore, the overall results demonstrated that PEI is a desirable coating reagent for the immobilization of MSC-EVs on the surface of biodegradable implants.
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108
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ISMN-loaded PLGA-PEG nanoparticles conjugated with anti- Staphylococcus aureus α-toxin inhibit Staphylococcus aureus biofilms in chronic rhinosinusitis. Future Med Chem 2021; 13:2033-2046. [PMID: 34612074 DOI: 10.4155/fmc-2021-0126] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Background: Staphylococcus aureus biofilms were linked to negative postsurgical outcomes of chronic rhinosinusitis (CRS). This study aims to develop a targeted nanoparticle and characterize its bactericidal effects. Methods: The authors prepared ISMN-loaded poly-lactide-co-glycolide acid (PLGA) and polyethylene glycol (PEG) nanoparticles conjugated with anti-S. aureus α-toxin (AA; ISMN-PLGA-PEG-AA), and determined its bactericidal and toxic effects. The antibiofilm propriety of ISMN-PLGA-PEG-AA was further investigated in a sheep CRS model. Results: ISMN-PLGA-PEG-AA had no toxic effect, while ISMN, ISMN-PLGA-PEG and ISMN-PLGA-PEG-AA had significantly anti-S. aureus effects. The blood concentrations and mRNA levels in sinus tissues of IL-4, IL-8 and IFN-γ in the sheep CRS model were significantly low. Conclusion: ISMN-PLGA-PEG-AA can effectively inhibit S. aureus biofilm, and is a promising drug for CRS treatment.
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109
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Go G, Yoo A, Kim S, Seon JK, Kim C, Park J, Choi E. Magnetization-Switchable Implant System to Target Delivery of Stem Cell-Loaded Bioactive Polymeric Microcarriers. Adv Healthc Mater 2021; 10:e2100068. [PMID: 34369079 DOI: 10.1002/adhm.202100068] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 07/13/2021] [Indexed: 11/11/2022]
Abstract
Various magnetic microcarrier systems capable of transporting cells to target lesions are developed for therapeutic agent-based tissue regeneration. However, the need for bioactive molecules and cells, the potential toxicity of the microcarrier, and the large volume and limited workspace of the magnetic targeting device remain challenging issues associated with microcarrier systems. Here, a multifunctional magnetic implant system is presented for targeted delivery, secure fixation, and induced differentiation of stem cells. This magnetic implant system consists of a biomaterial-based microcarrier containing bioactive molecules, a portable magnet array device, and a biocompatible paramagnetic implant. Among biomedical applications, the magnetic implant system is developed for knee cartilage repair. The various functions of these components are verified through in vitro, phantom, and ex vivo tests. As a result, a single microcarrier can load ≈1.52 ng of transforming growth factor β (TGF-β1) and 3.3 × 103 of stem cells and stimulate chondrogenic differentiation without extra bioactive molecule administration. Additionally, the implant system demonstrates high targeting efficiency (over 90%) of the microcarriers in a knee phantom and ex vivo pig knee joint. The results show that this implant system, which overcomes the limitations of the existing magnetic targeting system, represents an important advancement in the field.
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Affiliation(s)
- Gwangjun Go
- Korea Institute of Medical Microrobotics (KIMIRo) 43‐26 Cheomdangwagi‐ro, Buk‐gu Gwangju 61011 Korea
- School of Mechanical Engineering Chonnam National University 77 Yongbong‐ro, Buk‐gu Gwangju 61186 Korea
| | - Ami Yoo
- Korea Institute of Medical Microrobotics (KIMIRo) 43‐26 Cheomdangwagi‐ro, Buk‐gu Gwangju 61011 Korea
| | - Seokjae Kim
- Korea Institute of Medical Microrobotics (KIMIRo) 43‐26 Cheomdangwagi‐ro, Buk‐gu Gwangju 61011 Korea
- School of Mechanical Engineering Chonnam National University 77 Yongbong‐ro, Buk‐gu Gwangju 61186 Korea
| | - Jong Keun Seon
- Center for Joint Disease Chonnam National University Hwasun Hospital 160 Ilsim‐ri, Hwasun‐eup Hwasun 58128 Korea
| | - Chang‐Sei Kim
- Korea Institute of Medical Microrobotics (KIMIRo) 43‐26 Cheomdangwagi‐ro, Buk‐gu Gwangju 61011 Korea
- School of Mechanical Engineering Chonnam National University 77 Yongbong‐ro, Buk‐gu Gwangju 61186 Korea
| | - Jong‐Oh Park
- Korea Institute of Medical Microrobotics (KIMIRo) 43‐26 Cheomdangwagi‐ro, Buk‐gu Gwangju 61011 Korea
- School of Mechanical Engineering Chonnam National University 77 Yongbong‐ro, Buk‐gu Gwangju 61186 Korea
| | - Eunpyo Choi
- Korea Institute of Medical Microrobotics (KIMIRo) 43‐26 Cheomdangwagi‐ro, Buk‐gu Gwangju 61011 Korea
- School of Mechanical Engineering Chonnam National University 77 Yongbong‐ro, Buk‐gu Gwangju 61186 Korea
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110
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Nano DNA Vaccine Encoding Toxoplasma gondii Histone Deacetylase SIR2 Enhanced Protective Immunity in Mice. Pharmaceutics 2021; 13:pharmaceutics13101582. [PMID: 34683874 PMCID: PMC8538992 DOI: 10.3390/pharmaceutics13101582] [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: 08/19/2021] [Revised: 09/23/2021] [Accepted: 09/27/2021] [Indexed: 12/24/2022] Open
Abstract
The pathogen of toxoplasmosis, Toxoplasma gondii (T. gondii), is a zoonotic protozoon that can affect the health of warm-blooded animals including humans. Up to now, an effective vaccine with completely protection is still inaccessible. In this study, the DNA vaccine encoding T. gondii histone deacetylase SIR2 (pVAX1-SIR2) was constructed. To enhance the efficacy, chitosan and poly (d, l-lactic-co-glycolic)-acid (PLGA) were employed to design nanospheres loaded with the DNA vaccine, denoted as pVAX1-SIR2/CS and pVAX1-SIR2/PLGA nanospheres. The pVAX1-SIR2 plasmids were transfected into HEK 293-T cells, and the expression was evaluated by a laser scanning confocal microscopy. Then, the immune protections of pVAX1-SIR2 plasmid, pVAX1-SIR2/CS nanospheres, and pVAX1-SIR2/PLGA nanospheres were evaluated in a laboratory animal model. The in vivo findings indicated that pVAX1-SIR2/CS and pVAX1-SIR2/PLGA nanospheres could generate a mixed Th1/Th2 immune response, as indicated by the regulated production of antibodies and cytokines, the enhanced maturation and major histocompatibility complex (MHC) expression of dendritic cells (DCs), the induced splenocyte proliferation, and the increased percentages of CD4+ and CD8+ T lymphocytes. Furthermore, this enhanced immunity could obviously reduce the parasite burden in immunized animals through a lethal dose of T. gondii RH strain challenge. All these results propose that pVAX1-SIR2 plasmids entrapped in chitosan or PLGA nanospheres could be the promising vaccines against acute T. gondii infections and deserve further investigations.
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111
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Ujjwal RR, Yadav A, Tripathi S, Krishna STVS. Polymer-Based Nanotherapeutics for Burn Wounds. Curr Pharm Biotechnol 2021; 23:1460-1482. [PMID: 34579630 DOI: 10.2174/1389201022666210927103755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 07/11/2021] [Accepted: 08/06/2021] [Indexed: 11/22/2022]
Abstract
Burn wounds are complex and intricate injuries that have become a common cause of trauma leading to significant mortality and morbidity every year. Dressings are applied to burn wounds with the aim of promoting wound healing, preventing burn infection and restoring skin function. The dressing protects the injury and contributes to recovery of dermal and epidermal tissues. Polymer-based nanotherapeutics are increasingly being exploited as burn wound dressings. Natural polymers such as cellulose, chitin, alginate, collagen, gelatin and synthetic polymers like poly (lactic-co-glycolic acid), polycaprolactone, polyethylene glycol, and polyvinyl alcohol are being obtained as nanofibers by nanotechnological approaches like electrospinning and have shown wound healing and re-epithelialization properties. Their biocompatibility, biodegradability, sound mechanical properties and unique structures provide optimal microenvironment for cell proliferation, differentiation, and migration contributing to burn wound healing. The polymeric nanofibers mimic collagen fibers present in extracellular matrix and their high porosity and surface area to volume ratio enable increased interaction and sustained release of therapeutics at the site of thermal injury. This review is an attempt to compile all recent advances in the use of polymer-based nanotherapeutics for burn wounds. The various natural and synthetic polymers used have been discussed comprehensively and approaches being employed have been reported. With immense research effort that is currently being invested in this field and development of proper characterization and regulatory framework, future progress in burn treatment is expected to occur. Moreover, appropriate preclinical and clinical research will provide evidence for the great potential that polymer-based nanotherapeutics hold in the management of burn wounds.
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Affiliation(s)
- Rewati Raman Ujjwal
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research-Raebareli, Lucknow, U.P. India
| | - Awesh Yadav
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research-Raebareli, Lucknow, U.P. India
| | - Shourya Tripathi
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research-Raebareli, Lucknow, U.P. India
| | - S T V Sai Krishna
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research-Raebareli, Lucknow, U.P. India
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Hazra RS, Dutta D, Mamnoon B, Nair G, Knight A, Mallik S, Ganai S, Reindl K, Jiang L, Quadir M. Polymeric Composite Matrix with High Biobased Content as Pharmaceutically Relevant Molecular Encapsulation and Release Platform. ACS APPLIED MATERIALS & INTERFACES 2021; 13:40229-40248. [PMID: 34423963 DOI: 10.1021/acsami.1c03805] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Drug delivery systems (DDS) that can temporally control the rate and extent of release of therapeutically active molecules find applications in many clinical settings, ranging from infection control to cancer therapy. With an aim to design a locally implantable, controlled-release DDS, we demonstrated the feasibility of using cellulose nanocrystal (CNC)-reinforced poly (l-lactic acid) (PLA) composite beads. The performance of the platform was evaluated using doxorubicin (DOX) as a model drug for applications in triple-negative breast cancer. A facile, nonsolvent-induced phase separation (NIPS) method was adopted to form composite beads. We observed that CNC loading within these beads played a critical role in the mechanical stability, porosity, water uptake, diffusion, release, and pharmacological activity of the drug from the delivery system. When loaded with DOX, composite beads significantly controlled the release of the drug in a pH-dependent pattern. For example, PLA/CNC beads containing 37.5 wt % of CNCs showed a biphasic release of DOX, where 41 and 82% of the loaded drug were released at pH 7.4 and pH 5.5, respectively, over 7 days. Drug release followed Korsmeyer's kinetics, indicating that the release mechanism was mostly diffusion and swelling-controlled. We showed that DOX released from drug-loaded PLA/CNC composite beads locally suppressed the growth and proliferation of triple-negative breast cancer cells, MBA-MB-231, via the apoptotic pathway. The efficacy of the DDS was evaluated in human tissue explants. We envision that such systems will find applications for designing biobased platforms with programmed stability and drug delivery functions.
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Affiliation(s)
- Raj Shankar Hazra
- Department of Mechanical Engineering, North Dakota State University, Fargo, North Dakota 58108, United States
- Materials and Nanotechnology Program, North Dakota State University, Fargo, North Dakota 58108, United States
| | - Debasmita Dutta
- Department of Coatings and Polymeric Materials, North Dakota State University, Fargo, North Dakota 58108, United States
| | - Babak Mamnoon
- Department of Pharmaceutical Sciences, North Dakota State University, Fargo, North Dakota 58108, United States
| | - Gauthami Nair
- Department of Biological Sciences, North Dakota State University, Fargo, North Dakota 58108, United States
| | - Austin Knight
- Department of Mechanical Engineering, North Dakota State University, Fargo, North Dakota 58108, United States
| | - Sanku Mallik
- Department of Pharmaceutical Sciences, North Dakota State University, Fargo, North Dakota 58108, United States
| | - Sabha Ganai
- Division of Surgical Oncology, Sanford Research, Fargo, North Dakota 58122, United States
| | - Katie Reindl
- Department of Biological Sciences, North Dakota State University, Fargo, North Dakota 58108, United States
| | - Long Jiang
- Department of Mechanical Engineering, North Dakota State University, Fargo, North Dakota 58108, United States
- Materials and Nanotechnology Program, North Dakota State University, Fargo, North Dakota 58108, United States
| | - Mohiuddin Quadir
- Department of Coatings and Polymeric Materials, North Dakota State University, Fargo, North Dakota 58108, United States
- Materials and Nanotechnology Program, North Dakota State University, Fargo, North Dakota 58108, United States
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113
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Giram PS, Garnaik B. Evaluation of biocompatibility of synthesized low molecular weight
PLGA
copolymers using zinc L‐proline through green route for biomedical application. POLYM ADVAN TECHNOL 2021. [DOI: 10.1002/pat.5452] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Prabhanjan S. Giram
- Polymer Science and Engineering Division CSIR‐National Chemical Laboratory Pune India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad India
| | - Baijayantimala Garnaik
- Polymer Science and Engineering Division CSIR‐National Chemical Laboratory Pune India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad India
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114
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PLGA/PLA-Based Long-Acting Injectable Depot Microspheres in Clinical Use: Production and Characterization Overview for Protein/Peptide Delivery. Int J Mol Sci 2021; 22:ijms22168884. [PMID: 34445587 PMCID: PMC8396256 DOI: 10.3390/ijms22168884] [Citation(s) in RCA: 74] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 08/14/2021] [Accepted: 08/16/2021] [Indexed: 12/20/2022] Open
Abstract
Over the past few decades, long acting injectable (LAI) depots of polylactide-co-glycolide (PLGA) or polylactic acid (PLA) based microspheres have been developed for controlled drug delivery to reduce dosing frequency and to improve the therapeutic effects. Biopharmaceuticals such as proteins and peptides are encapsulated in the microspheres to increase their bioavailability and provide a long release period (days or months) with constant drug plasma concentration. The biodegradable and biocompatible properties of PLGA/PLA polymers, including but not limited to molecular weight, end group, lactide to glycolide ratio, and minor manufacturing changes, could greatly affect the quality attributes of microsphere formulations such as release profile, size, encapsulation efficiency, and bioactivity of biopharmaceuticals. Besides, the encapsulated proteins/peptides are susceptible to harsh processing conditions associated with microsphere fabrication methods, including exposure to organic solvent, shear stress, and temperature fluctuations. The protein/peptide containing LAI microspheres in clinical use is typically prepared by double emulsion, coacervation, and spray drying techniques. The purpose of this review is to provide an overview of the formulation attributes and conventional manufacturing techniques of LAI microspheres that are currently in clinical use for protein/peptides. Furthermore, the physicochemical characteristics of the microsphere formulations are deliberated.
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115
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Lee NK, Wang CPJ, Lim J, Park W, Kwon HK, Kim SN, Kim TH, Park CG. Impact of the conjugation of antibodies to the surfaces of polymer nanoparticles on the immune cell targeting abilities. NANO CONVERGENCE 2021; 8:24. [PMID: 34398322 PMCID: PMC8368787 DOI: 10.1186/s40580-021-00274-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Accepted: 07/31/2021] [Indexed: 06/01/2023]
Abstract
Antibodies have been widely used to provide targeting ability and to enhance bioactivity owing to their high specificity, availability, and diversity. Recent advances in biotechnology and nanotechnology permit site-specific engineering of antibodies and their conjugation to the surfaces of nanoparticles (NPs) in various orientations through chemical conjugations and physical adhesions. This study proposes the conjugation of poly(lactic-co-glycolic acid) (PLGA) NPs with antibodies by using two distinct methods, followed by a comparison between the cell-targeting efficiencies of both techniques. Full-length antibodies were conjugated to the PLGA-poly(ethylene glycol)-carboxylic acid (PLGA-PEG-COOH) NPs through the conventional carbodiimide coupling reaction, and f(ab')2 antibody fragments were conjugated to the PLGA-poly(ethylene glycol)-maleimide(PLGA-PEG-Mal) NPs through interactions between the f(ab')2 fragment thiol groups and the maleimide located on the nanoparticle surface. The results demonstrate that the PLGA nanoparticles conjugated with the f(ab')2 antibody fragments had a higher targeting efficiency in vitro and in vivo than that of the PLGA nanoparticles conjugated with the full-length antibodies. The results of this study can be built upon to design a delivery technique for drugs through biocompatible nanoparticles.
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Affiliation(s)
- Na Kyeong Lee
- Department of Intelligent Precision Healthcare Convergence, Sungkyunkwan University, Suwon, Gyeonggi, 16419, Republic of Korea
| | - Chi-Pin James Wang
- Department of Biomedical Engineering, SKKU Institute for Convergence, Sungkyunkwan University (SKKU), Suwon, Gyeonggi, 16419, Republic of Korea
| | - Jaesung Lim
- Department of Intelligent Precision Healthcare Convergence, Sungkyunkwan University, Suwon, Gyeonggi, 16419, Republic of Korea
| | - Wooram Park
- Department of Biomedical-Chemical Engineering, The Catholic University of Korea, Bucheon, Gyeonggi, 14662, Republic of Korea
| | - Ho-Keun Kwon
- Department of Microbiology and Immunology, Institute for Immunology and Immunological Diseases and Brain Korea 21 PLUS Project for Medical Sciences, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Se-Na Kim
- Institute of Medical and Biological Engineering, Medical Research Center, Seoul National University, Seoul, 03080, Republic of Korea
| | - Tae-Hyung Kim
- School of Integrative Engineering, Chung-Ang University, 84, Heukseok-ro, Dongjak-gu, Seoul, 06974, Republic of Korea.
| | - Chun Gwon Park
- Department of Intelligent Precision Healthcare Convergence, Sungkyunkwan University, Suwon, Gyeonggi, 16419, Republic of Korea.
- Department of Biomedical Engineering, SKKU Institute for Convergence, Sungkyunkwan University (SKKU), Suwon, Gyeonggi, 16419, Republic of Korea.
- Biomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University, Suwon, Gyeonggi, 16419, Republic of Korea.
- Center for Neuroscience Imaging Research, Institute for Basic Science (IBS), Suwon, Gyeonggi, 16419, Republic of Korea.
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116
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Challenges and opportunities in the development of complex generic long-acting injectable drug products. J Control Release 2021; 336:144-158. [PMID: 34126170 DOI: 10.1016/j.jconrel.2021.06.017] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 06/08/2021] [Accepted: 06/09/2021] [Indexed: 11/22/2022]
Abstract
Long-acting injectable (LAI) drug products enable the controlled release of a drug over an extended duration of time to improve the therapeutic effect, safety profile, or administration of an injectable product. The development of generic [505(j)] and differentiated [505(b)(2)] LAI products helps to provide patients and healthcare providers with more treatment options and to reduce overall healthcare costs, including those associated with drug product administration and patient compliance. In this review, we analyze the landscape of LAI products and identify the most common technical challenges that potential generic product entrants face. We focus on five formulation technologies that account for ~90% of approved LAI products, including those eligible for generic product registration over the next five years, to illustrate technology-specific challenges. We then review efforts from the U.S. Food and Drug Administration (FDA) to promote more generic product competition and emphasize the importance of collaboration among government, industry, and academia to advance the knowledge and capabilities of the scientific community. Regulatory bodies, industry, and academia are encouraged to anticipate challenges with emerging innovative LAI technologies and to leverage the experiences built on established technologies to foster generic product development.
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117
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In Vitro Evaluation of Poly(lactide-co-glycolide) In Situ Forming Gels for Bedaquiline Fumarate Salt and Pharmacokinetics Following Subcutaneous Injection in Rats. Pharmaceutics 2021; 13:pharmaceutics13081231. [PMID: 34452192 PMCID: PMC8400137 DOI: 10.3390/pharmaceutics13081231] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 07/28/2021] [Accepted: 07/29/2021] [Indexed: 11/25/2022] Open
Abstract
This study evaluated in vitro and in vivo drug release of bedaquiline from in situ forming gels (ISGs) containing 200 mg eq./g bedaquiline fumarate salt prepared with four different grades of poly(d,l-lactide) (PDLLA) or poly(d,l-lactide-co-glycolide) (PLGA) with a lactide/glycolide ratio of 50/50 or 75/25 and acid (A) or ester (E) end-capping in N-methyl-2-pyrrolidone at a polymer/solvent ratio of 20/80% (w/w). Mean in vitro drug release in 0.05 M phosphate buffer pH 7.4 with 1% (w/v) sodium lauryl sulphate was 37.3, 47.1, 53.3, and 62.3% within 28 days for ISGs containing PLGA5050A, PDLLA, PLGA7525A, and PLGA7525E, respectively. The data suggested that drug release was primarily controlled by precipitated drug redissolving, rather than polymer erosion. In vivo pharmacokinetic profiles after subcutaneous injections in rats were comparable for all ISGs (mean half-lives (t1/2) ranged from 1411 to 1695 h) and indicated a sustained drug release when compared to a solution of bedaquiline fumarate salt in polyethylene glycol 400/water 50/50% (v/v) (mean t1/2 of 895 h). In conclusion, PLGA or PDLLA-based ISGs have shown potential for parenteral sustained delivery of bedaquiline, suggesting further preclinical and clinical studies. From a formulation point of view, this case example highlights the importance of the interplay between drug solubility in biological media and dissolution of drug precipitates, which, in addition to the incorporation of diffusion controlling polymers, governs the release of the active drug.
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118
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Long-Acting Risperidone Dual Control System: Preparation, Characterization and Evaluation In Vitro and In Vivo. Pharmaceutics 2021; 13:pharmaceutics13081210. [PMID: 34452171 PMCID: PMC8399464 DOI: 10.3390/pharmaceutics13081210] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 07/30/2021] [Accepted: 08/03/2021] [Indexed: 12/24/2022] Open
Abstract
Schizophrenia, a psychiatric disorder, requires long-term treatment; however, large fluctuations in blood drug concentration increase the risk of adverse reactions. We prepared a long-term risperidone (RIS) implantation system that can stabilize RIS release and established in-vitro and in-vivo evaluation systems. Cumulative release, drug loading, and entrapment efficiency were used as evaluation indicators to evaluate the effects of different pore formers, polymer ratios, porogen concentrations, and oil–water ratios on a RIS implant (RIS-IM). We also built a mathematical model to identify the optimized formulation by stepwise regression. We also assessed the crystalline changes, residual solvents, solubility and stability after sterilization, in-vivo polymer degradation, pharmacokinetics, and tissue inflammation in the case of the optimized formulation. The surface of the optimized RIS microspheres was small and hollow with 134.4 ± 3.5 µm particle size, 1.60 SPAN, 46.7% ± 2.3% implant drug loading, and 93.4% entrapment efficiency. The in-vitro dissolution behavior of RIS-IM had zero-order kinetics and stable blood concentration; no lag time was released for over three months. Furthermore, the RIS-IM was not only non-irritating to tissues but also had good biocompatibility and product stability. Long-acting RIS-IMs with microspheres and film coatings can provide a new avenue for treating schizophrenia.
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119
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Rivelli GG, Perez AC, Silva PHR, Gomes ECDL, Moreira CPDS, Tamashiro E, Valera FCP, Anselmo-Lima WT, Pianetti GA, Silva-Cunha A. Biodegradable Electrospun Nanofibers: A New Approach For Rhinosinusitis Treatment. Eur J Pharm Sci 2021; 163:105852. [PMID: 33862240 DOI: 10.1016/j.ejps.2021.105852] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 03/10/2021] [Accepted: 04/12/2021] [Indexed: 12/18/2022]
Abstract
Biodegradable polymeric nanofibers containing mometasone furoate can be a new approach to drug delivery to treat chronic rhinosinusitis, providing controlled steroid delivery to the sinonasal mucosa. This study aimed to develop biodegradable polymeric nanofibers and explore the safety of these fibers in an in vivo rabbit model. The nanofibers' development has been optimized using the Response Surface Methodology (RSM) obtained with Design of Experiments (DoE) with the best conditions related to the polymer concentration and proportion of solvents used in the electrospinning process. The nanofibers were prepared, operating as a determinant factor, the nanofiber formation and its diameter evaluated by Scanning Electron Microscopy (SEM). The ideal system obtained was assessed by SEM, thermogravimetric analysis (TGA), X-ray diffraction (XRD), differential scanning calorimetry (DSC), assay, and drug delivery by UHLPC validated method. The results showed that the drug is dispersed in the polymeric matrix, is stable, and showed sustained release kinetics in a bio-relevant nasal environment (Higuchi model kinetics). In vivo tests, the level of inflammation at the animals' mucosa which received the nanofiber with the mometasone furoate was lower than those that received the nanofibers without the drug (α = 0.05). Histopathology analysis showed that the polymeric nanofibers containing mometasone are safe when topically applied on the sinonasal mucosa, opening a new horizon in chronic rhinosinusitis treatment.
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Affiliation(s)
- Graziella Gomes Rivelli
- Faculty of Pharmacy, Federal University of Minas Gerais, Belo Horizonte, MG. 31270-901, Brazil
| | - André Coura Perez
- Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP. 14049-900, Brazil
| | | | | | | | - Edwin Tamashiro
- Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP. 14049-900, Brazil
| | | | | | - Gérson Antônio Pianetti
- Faculty of Pharmacy, Federal University of Minas Gerais, Belo Horizonte, MG. 31270-901, Brazil
| | - Armando Silva-Cunha
- Faculty of Pharmacy, Federal University of Minas Gerais, Belo Horizonte, MG. 31270-901, Brazil.
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120
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Gou Y, Huang G, Li J, Yang F, Liang H. Versatile delivery systems for non-platinum metal-based anticancer therapeutic agents. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.213975] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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121
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122
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Maraldi M, Lisi M, Moretti G, Sponchioni M, Moscatelli D. Health care-associated infections: Controlled delivery of cationic antiseptics from polymeric excipients. Int J Pharm 2021; 607:120956. [PMID: 34333024 DOI: 10.1016/j.ijpharm.2021.120956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 07/02/2021] [Accepted: 07/26/2021] [Indexed: 10/20/2022]
Abstract
Nowadays, the treatment of health care-associated infections represents a serious issue, due to the increasing number of bacterial strains resistant to traditional antibiotics. The use of antiseptics like quaternary ammonium salts and biguanides is a viable alternative to face these life-threatening infections. However, their inherent toxicity as well as the necessity of providing a sustained release to avoid the formation of pathogen biofilms are compelling obstacles towards their assessment in the hospitals. Within this framework, the role of polymeric drug delivery systems is fundamental to overcome the aforementioned problems. Biocompatibility, biodegradability and excipient-drug interactions are crucial properties determining the efficacy of the formulation. In this work, we provide an in-depth analysis of the polymer drug delivery systems that have been developed or are under development for the sustained release of positively charged antiseptics, highlighting the crucial characteristics that allowed to achieve the most relevant therapeutic effects. We reported and compared natural occurring polymers and synthetic carriers to show their pros and cons and applicability in the treatment of health care-associated infections. Then, the discussion is focused on a particularly relevant class of materials adopted for the scope, represented by polyesters, which gave rise, due to their biodegradability, to the field of resorbable drug delivery devices. Finally, a specific analysis on the effect of the polymer functionalization over the formulation performances for the different types of polymeric carriers is presented.
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Affiliation(s)
- Matteo Maraldi
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Via Luigi Mancinelli 7, 20131 Milano, Italy
| | - Marco Lisi
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Via Luigi Mancinelli 7, 20131 Milano, Italy
| | - Giacomo Moretti
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Via Luigi Mancinelli 7, 20131 Milano, Italy
| | - Mattia Sponchioni
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Via Luigi Mancinelli 7, 20131 Milano, Italy.
| | - Davide Moscatelli
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Via Luigi Mancinelli 7, 20131 Milano, Italy
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123
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Polymeric Microspheres/Cells/Extracellular Matrix Constructs Produced by Auto-Assembly for Bone Modular Tissue Engineering. Int J Mol Sci 2021; 22:ijms22157897. [PMID: 34360672 PMCID: PMC8348249 DOI: 10.3390/ijms22157897] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 07/10/2021] [Accepted: 07/19/2021] [Indexed: 11/24/2022] Open
Abstract
Modular tissue engineering (MTE) is a novel “bottom-up” approach to create engineered biological tissues from microscale repeating units. Our aim was to obtain microtissue constructs, based on polymer microspheres (MSs) populated with cells, which can be further assembled into larger tissue blocks and used in bone MTE. Poly(L-lactide-co-glycolide) MS of 165 ± 47 µm in diameter were produced by oil-in-water emulsification and treated with 0.1 M NaOH. To improve cell adhesion, MSs were coated with poly-L-lysine (PLL) or human recombinant collagen type I (COL). The presence of oxygenated functionalities and PLL/COL coating on MS was confirmed by X-ray photoelectron spectroscopy (XPS). To assess the influence of medium composition on adhesion, proliferation, and osteogenic differentiation, preosteoblast MC3T3-E1 cells were cultured on MS in minimal essential medium (MEM) and osteogenic differentiation medium (OSG). Moreover, to assess the potential osteoblast–osteoclast cross-talk phenomenon and the influence of signaling molecules released by osteoclasts on osteoblast cell culture, a medium obtained from osteoclast culture (OSC) was also used. To impel the cells to adhere and grow on the MS, anti-adhesive cell culture plates were utilized. The results show that MS coated with PLL and COL significantly favor the adhesion and growth of MC3T3-E1 cells on days 1 and 7, respectively, in all experimental conditions tested. On day 7, three-dimensional MS/cell/extracellular matrix constructs were created owing to auto-assembly. The cells grown in such constructs exhibited high activity of early osteogenic differentiation marker, namely, alkaline phosphatase. Superior cell growth on PLL- and COL-coated MS on day 14 was observed in the OSG medium. Interestingly, deposition of extracellular matrix and its mineralization was particularly enhanced on COL-coated MS in OSG medium on day 14. In our study, we developed a method of spontaneous formation of organoid-like MS-based cell/ECM constructs with a few millimeters in size. Such constructs may be regarded as building blocks in bone MTE.
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124
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Ansari M, Eslami H. Development of a novel poly (lactic-co-glycolic acid) based composite scaffold for bone tissue engineering. INORG NANO-MET CHEM 2021. [DOI: 10.1080/24701556.2021.1954661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Mojtaba Ansari
- Department of Biomedical Engineering, Meybod University, Meybod, Iran
| | - Hossein Eslami
- Department of Biomedical Engineering, Meybod University, Meybod, Iran
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125
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Khoeini R, Nosrati H, Akbarzadeh A, Eftekhari A, Kavetskyy T, Khalilov R, Ahmadian E, Nasibova A, Datta P, Roshangar L, Deluca DC, Davaran S, Cucchiarini M, Ozbolat IT. Natural and Synthetic Bioinks for 3D Bioprinting. ADVANCED NANOBIOMED RESEARCH 2021. [DOI: 10.1002/anbr.202000097] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Affiliation(s)
- Roghayeh Khoeini
- Department of Medicinal Chemistry Faculty of Pharmacy Tabriz University of Medical Sciences P.O. Box: 51664-14766 Tabriz Iran
- Drug Applied Research Center Tabriz University of Medical Sciences P.O. Box: 51656-65811 Tabriz Iran
| | - Hamed Nosrati
- Drug Applied Research Center Tabriz University of Medical Sciences P.O. Box: 51656-65811 Tabriz Iran
- Joint Ukraine-Azerbaijan International Research and Education Center of Nanobiotechnology and Functional Nanosystems 24, I. Franko Str. 82100 Drohobych Ukraine
- Joint Ukraine-Azerbaijan International Research and Education Center of Nanobiotechnology and Functional Nanosystems 9 B.Vahabzade Str. 1143 Baku Azerbaijan
| | - Abolfazl Akbarzadeh
- Joint Ukraine-Azerbaijan International Research and Education Center of Nanobiotechnology and Functional Nanosystems 24, I. Franko Str. 82100 Drohobych Ukraine
- Joint Ukraine-Azerbaijan International Research and Education Center of Nanobiotechnology and Functional Nanosystems 9 B.Vahabzade Str. 1143 Baku Azerbaijan
- Department of Medical Nanotechnology Faculty of Advanced Medical Sciences Tabriz University of Medical Sciences P.O. Box: 516615731 Tabriz Iran
| | - Aziz Eftekhari
- Joint Ukraine-Azerbaijan International Research and Education Center of Nanobiotechnology and Functional Nanosystems 24, I. Franko Str. 82100 Drohobych Ukraine
- Joint Ukraine-Azerbaijan International Research and Education Center of Nanobiotechnology and Functional Nanosystems 9 B.Vahabzade Str. 1143 Baku Azerbaijan
- Russian Institute for Advanced Study Moscow State Pedagogical University 1/1, Malaya Pirogovskaya Street Moscow 119991 Russian Federation
- Pharmacology and Toxicology Department Maragheh University of Medical Sciences 78151-55158 Maragheh Iran
- Department of Synthesis and Characterization of Polymers Polymer Institute Slovak Academy of Sciences (SAS) Dúbravská cesta 9 845 41 Bratislava Slovakia
| | - Taras Kavetskyy
- Joint Ukraine-Azerbaijan International Research and Education Center of Nanobiotechnology and Functional Nanosystems 24, I. Franko Str. 82100 Drohobych Ukraine
- Joint Ukraine-Azerbaijan International Research and Education Center of Nanobiotechnology and Functional Nanosystems 9 B.Vahabzade Str. 1143 Baku Azerbaijan
- Department of Biology and Chemistry Drohobych Ivan Franko State Pedagogical University 24, I. Franko Str. 82100 Drohobych Ukraine
- Department of Surface Engineering The John Paul II Catholic University of Lublin 20-950 Lublin Poland
| | - Rovshan Khalilov
- Joint Ukraine-Azerbaijan International Research and Education Center of Nanobiotechnology and Functional Nanosystems 24, I. Franko Str. 82100 Drohobych Ukraine
- Joint Ukraine-Azerbaijan International Research and Education Center of Nanobiotechnology and Functional Nanosystems 9 B.Vahabzade Str. 1143 Baku Azerbaijan
- Russian Institute for Advanced Study Moscow State Pedagogical University 1/1, Malaya Pirogovskaya Street Moscow 119991 Russian Federation
- Department of Biophysics and Biochemistry Faculty of Biology Baku State University Baku AZ 1143 Azerbaijan
- Institute of Radiation Problems National Academy of Sciences of Azerbaijan Baku AZ 1143 Azerbaijan
| | - Elham Ahmadian
- Joint Ukraine-Azerbaijan International Research and Education Center of Nanobiotechnology and Functional Nanosystems 24, I. Franko Str. 82100 Drohobych Ukraine
- Joint Ukraine-Azerbaijan International Research and Education Center of Nanobiotechnology and Functional Nanosystems 9 B.Vahabzade Str. 1143 Baku Azerbaijan
- Kidney Research Center Tabriz University of Medical Sciences P.O. Box: 5166/15731 Tabriz Iran
| | - Aygun Nasibova
- Joint Ukraine-Azerbaijan International Research and Education Center of Nanobiotechnology and Functional Nanosystems 24, I. Franko Str. 82100 Drohobych Ukraine
- Joint Ukraine-Azerbaijan International Research and Education Center of Nanobiotechnology and Functional Nanosystems 9 B.Vahabzade Str. 1143 Baku Azerbaijan
- Institute of Radiation Problems National Academy of Sciences of Azerbaijan Baku AZ 1143 Azerbaijan
| | - Pallab Datta
- Department of Pharmaceutics National Institute of Pharmaceutical Education and Research Kolkata West Bengal 700054 India
| | - Leila Roshangar
- Stem Cell Research Center Tabriz University of Medical Sciences P.O. Box: 5166/15731 Tabriz Iran
| | - Dante C. Deluca
- Agricultural and Biological Engineering Department Penn State University University Park 16802 PA USA
| | - Soodabeh Davaran
- Department of Medicinal Chemistry Faculty of Pharmacy Tabriz University of Medical Sciences P.O. Box: 51664-14766 Tabriz Iran
- Drug Applied Research Center Tabriz University of Medical Sciences P.O. Box: 51656-65811 Tabriz Iran
- Joint Ukraine-Azerbaijan International Research and Education Center of Nanobiotechnology and Functional Nanosystems 24, I. Franko Str. 82100 Drohobych Ukraine
- Joint Ukraine-Azerbaijan International Research and Education Center of Nanobiotechnology and Functional Nanosystems 9 B.Vahabzade Str. 1143 Baku Azerbaijan
- Department of Medical Nanotechnology Faculty of Advanced Medical Sciences Tabriz University of Medical Sciences P.O. Box: 516615731 Tabriz Iran
| | - Magali Cucchiarini
- Center of Experimental Orthopaedics Saarland University Medical Center Kirrbergerstr. Bldg 37 D-66421 Homburg/Saar Germany
| | - Ibrahim T. Ozbolat
- Engineering Science and Mechanics Department Penn State University University Park 16802 PA USA
- The Huck Institutes of the Life Sciences Penn State University University Park 16802 PA USA
- Biomedical Engineering Department Penn State University University Park 16802 PA USA
- Materials Research Institute Penn State University University Park 16802 PA USA
- Department of Neurosurgery Penn State University Hershey 17033 PA USA
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126
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Dong Z, Miao Y, Cui H, Huang Q, Li Y, Wang Z. Structural Evolution of Polyglycolide and Poly(glycolide- co-lactide) Fibers during the Heat-Setting Process. Biomacromolecules 2021; 22:3342-3356. [PMID: 34212713 DOI: 10.1021/acs.biomac.1c00449] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
PGA and P(GA-co-LA) fibers applied as surgical sutures strongly depend on their microstructure. The structural evolution in both the relaxed and tensioned states during heat-setting after hot stretching, which included heating and postannealing, was investigated using in situ WAXD/SAXS and DSC techniques. We found that the fibers of both PGA and P(GA-co-LA) with 8% LA content under the relaxed state were more advantageous than the fibers under the tensioned state indicated by the larger crystallite sizes and unit cell parameters and the higher crystallinity. The mechanical properties of the samples increased after heat-setting. Heat-setting at 120 °C was more suitable for promoting the fiber properties, which can be ascribed to crystal formation and perfection. During the heating, the thermal expansion increased the unit cell parameters and the long period of PGA linearly, whereas the unit cell parameters of P(GA-co-LA) had an obvious turning point at 60-80 °C, and the long period showed a sudden decline in the temperature range of 60-80 °C, which was mainly the result of the discharge of LA units. The unit cell parameters and the long period of both PGA and P(GA-co-LA) decreased during the isotherm process due to crystal perfection. However, the P(GA-co-LA) decrease was more prominent than PGA because of the inclusion of LA monomers in the crystal structure of GAs.
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Affiliation(s)
- Zhimin Dong
- Ningbo Key Laboratory of Specialty Polymers, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
| | - Yushuang Miao
- Ningbo Key Laboratory of Specialty Polymers, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
| | | | - Qing Huang
- China Textile Academy, Beijing100025, China
| | - Yiguo Li
- Ningbo Key Laboratory of Specialty Polymers, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
| | - Zongbao Wang
- Ningbo Key Laboratory of Specialty Polymers, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
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Sedush NG, Kadina YA, Razuvaeva EV, Puchkov AA, Shirokova EM, Gomzyak VI, Kalinin KT, Kulebyakina AI, Chvalun SN. Nanoformulations of Drugs Based on Biodegradable Lactide Copolymers with Various Molecular Structures and Architectures. NANOBIOTECHNOLOGY REPORTS 2021. [PMCID: PMC8431958 DOI: 10.1134/s2635167621040121] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Modern pharmaceutics are actively developing towards the design of targeted drugs. The development of selectively acting formulations requires the creation of smart delivery systems based on carriers that would first find the target cells and enter them and then release the active substance locally. Nanoparticles of biocompatible and biodegradable polymers can be effectively used as such carriers. Flexible regulation of the molecular structure and architecture of polymers, as well as the modification of nanoparticles with vector molecules, allows one to construct carrier particles for the development of nanoformulations for active agents of various nature. This review presents the main approaches to the design of nanoformulations for targeted delivery, describes the methods for the preparation and study of nanoparticles based on hydrophobic and amphiphilic biodegradable lactide polymers, and discusses the effect of the molecular structure and preparation conditions on the characteristics of nanoparticles in detail. Some results of research in this area of the Kurchatov complex of NBIСS nature-like technologies are also presented.
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Affiliation(s)
- N. G. Sedush
- Kurchatov Institute National Research Center, 123098 Moscow, Russia
| | - Y. A. Kadina
- Kurchatov Institute National Research Center, 123098 Moscow, Russia
| | - E. V. Razuvaeva
- Kurchatov Institute National Research Center, 123098 Moscow, Russia
| | - A. A. Puchkov
- Kurchatov Institute National Research Center, 123098 Moscow, Russia
| | - E. M. Shirokova
- Kurchatov Institute National Research Center, 123098 Moscow, Russia
| | - V. I. Gomzyak
- Kurchatov Institute National Research Center, 123098 Moscow, Russia
| | - K. T. Kalinin
- Kurchatov Institute National Research Center, 123098 Moscow, Russia
| | | | - S. N. Chvalun
- Kurchatov Institute National Research Center, 123098 Moscow, Russia
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128
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Zaitone BA, Al-Zahrani A. Spray Drying of Cellulose Nanofibers: Drying Kinetics Modeling of a Single Droplet and Particle Formation. Chem Eng Technol 2021. [DOI: 10.1002/ceat.202000579] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Belal Al Zaitone
- King Abdulaziz University Department of Chemical and Materials Engineering Al-Oloum street 21589 Jeddah Saudi Arabia
| | - Abdulrahim Al-Zahrani
- King Abdulaziz University Department of Chemical and Materials Engineering Al-Oloum street 21589 Jeddah Saudi Arabia
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129
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Hua Y, Su Y, Zhang H, Liu N, Wang Z, Gao X, Gao J, Zheng A. Poly(lactic-co-glycolic acid) microsphere production based on quality by design: a review. Drug Deliv 2021; 28:1342-1355. [PMID: 34180769 PMCID: PMC8245074 DOI: 10.1080/10717544.2021.1943056] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Poly(lactic-co-glycolic acid) (PLGA) has garnered increasing attention as a candidate drug delivery polymer owing to its favorable properties, including its excellent biocompatibility, biodegradability, non-toxicity, non-immunogenicity, and mechanical strength. PLAG are specifically used as microspheres for the sustained/controlled and targeted delivery of hydrophilic or hydrophobic drugs, as well as biological therapeutic macromolecules, including peptide and protein drugs. PLGAs with different molecular weights, lactic acid (LA)/glycolic acid (GA) ratios, and end groups exhibit unique release characteristics, which is beneficial for obtaining diverse therapeutic effects. This review aims to analyze the composition of PLGA microspheres, and understand the manufacturing process involved in their production, from a quality by design perspective. Additionally, the key factors affecting PLGA microsphere development are explored as well as the principles involved in the synthesis and degradation of PLGA and its interaction with active drugs. Further, the effects elicited by microcosmic conditions on PLGA macroscopic properties, are analyzed. These conditions include variations in the organic phase (organic solvent, PLGA, and drug concentration), continuous phase (emulsifying ability), emulsifying stage (organic phase and continuous phase interaction, homogenization parameters), and solidification process (relationship between solvent volatilization rate and curing conditions). The challenges in achieving consistency between batches during manufacturing are addressed, and continuous production is discussed as a potential solution. Finally, potential critical quality attributes are introduced, which may facilitate the optimization of process parameters.
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Affiliation(s)
- Yabing Hua
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China
| | - Yuhuai Su
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China
| | - Hui Zhang
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China
| | - Nan Liu
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China
| | - Zengming Wang
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China
| | - Xiang Gao
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China
| | - Jing Gao
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China
| | - Aiping Zheng
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, China
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130
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Basinska T, Gadzinowski M, Mickiewicz D, Slomkowski S. Functionalized Particles Designed for Targeted Delivery. Polymers (Basel) 2021; 13:2022. [PMID: 34205672 PMCID: PMC8234925 DOI: 10.3390/polym13122022] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 06/07/2021] [Accepted: 06/14/2021] [Indexed: 12/03/2022] Open
Abstract
Pure bioactive compounds alone can only be exceptionally administered in medical treatment. Usually, drugs are produced as various forms of active compounds and auxiliary substances, combinations assuring the desired healing functions. One of the important drug forms is represented by a combination of active substances and particle-shaped polymer in the nano- or micrometer size range. The review describes recent progress in this field balanced with basic information. After a brief introduction, the paper presents a concise overview of polymers used as components of nano- and microparticle drug carriers. Thereafter, progress in direct synthesis of polymer particles with functional groups is discussed. A section is devoted to formation of particles by self-assembly of homo- and copolymer-bearing functional groups. Special attention is focused on modification of the primary functional groups introduced during particle preparation, including introduction of ligands promoting anchorage of particles onto the chosen living cell types by interactions with specific receptors present in cell membranes. Particular attention is focused on progress in methods suitable for preparation of particles loaded with bioactive substances. The review ends with a brief discussion of the still not answered questions and unsolved problems.
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Affiliation(s)
- Teresa Basinska
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Lodz, Poland; (M.G.); (D.M.)
| | | | | | - Stanislaw Slomkowski
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Lodz, Poland; (M.G.); (D.M.)
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131
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Operti MC, Bernhardt A, Grimm S, Engel A, Figdor CG, Tagit O. PLGA-based nanomedicines manufacturing: Technologies overview and challenges in industrial scale-up. Int J Pharm 2021; 605:120807. [PMID: 34144133 DOI: 10.1016/j.ijpharm.2021.120807] [Citation(s) in RCA: 86] [Impact Index Per Article: 28.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 06/02/2021] [Accepted: 06/13/2021] [Indexed: 12/12/2022]
Abstract
Nanomedicines based on poly(lactic-co-glycolic acid) (PLGA) carriers offer tremendous opportunities for biomedical research. Although several PLGA-based systems have already been approved by both the Food and Drug Administration (FDA) and the European Medicine Agency (EMA), and are widely used in the clinics for the treatment or diagnosis of diseases, no PLGA nanomedicine formulation is currently available on the global market. One of the most impeding barriers is the development of a manufacturing technique that allows for the transfer of nanomedicine production from the laboratory to an industrial scale with proper characterization and quality control methods. This review provides a comprehensive overview of the technologies currently available for the manufacturing and analysis of polymeric nanomedicines based on PLGA nanoparticles, the scale-up challenges that hinder their industrial applicability, and the issues associated with their successful translation into clinical practice.
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Affiliation(s)
- Maria Camilla Operti
- Department of Tumor Immunology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, 6500 HB Nijmegen, the Netherlands; Evonik Operations GmbH, Research Development & Innovation, 64293 Darmstadt, Germany.
| | - Alexander Bernhardt
- Evonik Operations GmbH, Research Development & Innovation, 64293 Darmstadt, Germany.
| | - Silko Grimm
- Evonik Operations GmbH, Research Development & Innovation, 64293 Darmstadt, Germany.
| | - Andrea Engel
- Evonik Corporation, Birmingham Laboratories, Birmingham, AL 35211, United States.
| | - Carl Gustav Figdor
- Department of Tumor Immunology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, 6500 HB Nijmegen, the Netherlands.
| | - Oya Tagit
- Department of Tumor Immunology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, 6500 HB Nijmegen, the Netherlands.
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132
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Acharya AP, Tang Y, Bertero T, Tai Y, Harvey LD, Woodcock CC, Sun W, Pineda R, Mitash N, Königshoff M, Little SR, Chan SY. Simultaneous Pharmacologic Inhibition of Yes-Associated Protein 1 and Glutaminase 1 via Inhaled Poly(Lactic-co-Glycolic) Acid-Encapsulated Microparticles Improves Pulmonary Hypertension. J Am Heart Assoc 2021; 10:e019091. [PMID: 34056915 PMCID: PMC8477870 DOI: 10.1161/jaha.120.019091] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Accepted: 04/12/2021] [Indexed: 12/19/2022]
Abstract
Background Pulmonary hypertension (PH) is a deadly disease characterized by vascular stiffness and altered cellular metabolism. Current treatments focus on vasodilation and not other root causes of pathogenesis. Previously, it was demonstrated that glutamine metabolism, as catalyzed by GLS1 (glutaminase 1) activity, is mechanoactivated by matrix stiffening and the transcriptional coactivators YAP1 (yes-associated protein 1) and transcriptional coactivator with PDZ-binding motif (TAZ), resulting in pulmonary vascular proliferation and PH. Pharmacologic inhibition of YAP1 (by verteporfin) or glutaminase (by CB-839) improved PH in vivo. However, systemic delivery of these agents, particularly YAP1 inhibitors, may have adverse chronic effects. Furthermore, simultaneous use of pharmacologic blockers may offer additive or synergistic benefits. Therefore, a strategy that delivers these drugs in combination to local lung tissue, thus avoiding systemic toxicity and driving more robust improvement, was investigated. Methods and Results We used poly(lactic-co-glycolic) acid polymer-based microparticles for delivery of verteporfin and CB-839 simultaneously to the lungs of rats suffering from monocrotaline-induced PH. Microparticles released these drugs in a sustained fashion and delivered their payload in the lungs for 7 days. When given orotracheally to the rats weekly for 3 weeks, microparticles carrying this drug combination improved hemodynamic (right ventricular systolic pressure and right ventricle/left ventricle+septum mass ratio), histologic (vascular remodeling), and molecular markers (vascular proliferation and stiffening) of PH. Importantly, only the combination of drug delivery, but neither verteporfin nor CB-839 alone, displayed significant improvement across all indexes of PH. Conclusions Simultaneous, lung-specific, and controlled release of drugs targeting YAP1 and GLS1 improved PH in rats, addressing unmet needs for the treatment of this deadly disease.
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MESH Headings
- Administration, Inhalation
- Animals
- Benzeneacetamides/administration & dosage
- Benzeneacetamides/chemistry
- Cells, Cultured
- Delayed-Action Preparations
- Disease Models, Animal
- Drug Carriers
- Drug Combinations
- Drug Compounding
- Enzyme Inhibitors/administration & dosage
- Enzyme Inhibitors/chemistry
- Glutaminase/antagonists & inhibitors
- Glutaminase/metabolism
- Hemodynamics/drug effects
- Humans
- Hypertension, Pulmonary/chemically induced
- Hypertension, Pulmonary/drug therapy
- Hypertension, Pulmonary/metabolism
- Hypertension, Pulmonary/physiopathology
- Intracellular Signaling Peptides and Proteins/antagonists & inhibitors
- Intracellular Signaling Peptides and Proteins/metabolism
- Lung/drug effects
- Lung/metabolism
- Lung/physiopathology
- Male
- Mechanotransduction, Cellular
- Monocrotaline
- Particle Size
- Polylactic Acid-Polyglycolic Acid Copolymer/chemistry
- Rats, Sprague-Dawley
- Thiadiazoles/administration & dosage
- Thiadiazoles/chemistry
- Time Factors
- Vascular Remodeling/drug effects
- Ventricular Function, Right/drug effects
- Verteporfin/administration & dosage
- Verteporfin/chemistry
- YAP-Signaling Proteins
- Rats
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Affiliation(s)
- Abhinav P. Acharya
- Department of Chemical and Petroleum EngineeringUniversity of PittsburghPA
- Biological Design Graduate ProgramSchool for the Engineering of Matter, Transport, and EnergyArizona State UniversityTempeAZ
- Chemical EngineeringSchool for the Engineering of Matter, Transport, and EnergyArizona State UniversityTempeAZ
| | - Ying Tang
- Center for Pulmonary Vascular Biology and MedicinePittsburgh Heart, Lung, and Blood Vascular Medicine InstituteDivision of CardiologyDepartment of MedicineUniversity of Pittsburgh School of MedicinePA
| | - Thomas Bertero
- Université Côte d'AzurCentre national de la recherche scientifique (CNRS) Bienvenue à l'Institut de Pharmacologie Moléculaire et Cellulaire (IPMC)ValbonneFrance
| | - Yi‐Yin Tai
- Center for Pulmonary Vascular Biology and MedicinePittsburgh Heart, Lung, and Blood Vascular Medicine InstituteDivision of CardiologyDepartment of MedicineUniversity of Pittsburgh School of MedicinePA
| | - Lloyd D. Harvey
- Center for Pulmonary Vascular Biology and MedicinePittsburgh Heart, Lung, and Blood Vascular Medicine InstituteDivision of CardiologyDepartment of MedicineUniversity of Pittsburgh School of MedicinePA
| | - Chen‐Shan C. Woodcock
- Center for Pulmonary Vascular Biology and MedicinePittsburgh Heart, Lung, and Blood Vascular Medicine InstituteDivision of CardiologyDepartment of MedicineUniversity of Pittsburgh School of MedicinePA
| | - Wei Sun
- Center for Pulmonary Vascular Biology and MedicinePittsburgh Heart, Lung, and Blood Vascular Medicine InstituteDivision of CardiologyDepartment of MedicineUniversity of Pittsburgh School of MedicinePA
| | - Ricardo Pineda
- Division of Pulmonary, Allergy, and Critical Care MedicineDepartment of MedicineUniversity of Pittsburgh School of MedicinePA
| | - Nilay Mitash
- Division of Pulmonary, Allergy, and Critical Care MedicineDepartment of MedicineUniversity of Pittsburgh School of MedicinePA
| | - Melanie Königshoff
- Division of Pulmonary, Allergy, and Critical Care MedicineDepartment of MedicineUniversity of Pittsburgh School of MedicinePA
| | - Steven R. Little
- Department of Chemical and Petroleum EngineeringUniversity of PittsburghPA
- Department of ImmunologyUniversity of Pittsburgh School of MedicinePA
- Department of BioengineeringUniversity of PittsburghPA
- Department of Pharmaceutical SciencesUniversity of PittsburghPA
- Department of OphthalmologyUniversity of PittsburghPA
- McGowan Institute for Regenerative MedicineUniversity of PittsburghPA
| | - Stephen Y. Chan
- Center for Pulmonary Vascular Biology and MedicinePittsburgh Heart, Lung, and Blood Vascular Medicine InstituteDivision of CardiologyDepartment of MedicineUniversity of Pittsburgh School of MedicinePA
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133
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Li Y, Fan R, Xing H, Fei Y, Cheng J, Lu L. Study on swelling and drug releasing behaviors of ibuprofen-loaded bimetallic alginate aerogel beads with pH-responsive performance. Colloids Surf B Biointerfaces 2021; 205:111895. [PMID: 34102531 DOI: 10.1016/j.colsurfb.2021.111895] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 05/24/2021] [Accepted: 05/30/2021] [Indexed: 11/25/2022]
Abstract
Bimetallic alginate aerogel beads were prepared by ionotropic gelation method with Ca2+-Ba2+ bimetallic solution and ibuprofen was loaded as a model drug. The swelling and drug releasing behaviors of the beads, especially the influence of barium, were investigated in artificial gastric and intestinal fluids. The results showed that these beads presented higher encapsulation efficiency due to the special structure of aerogel, and barium was beneficial for the more stable structure and drug releasing behavior. The lower swelling capacity of bimetallic beads was observed than monometallic beads. A rapid high-level releasing of ibuprofen was achieved in artificial intestinal fluid, which was up to 96.9% within 1 h, while ibuprofen releasing was avoided in artificial gastric fluid effectively. The drug releasing mechanism of these beads was explored in detail. In the bimetallic crosslinking system, Ba2+ presented a special effect on alginate beads with more sensitive pH response performance. Thus, these beads had more widely potential as a site-specific delivery system, especially for intestinal therapy.
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Affiliation(s)
- Yaping Li
- Special Glass Key Lab of Hainan Province, School of Materials Science and Engineering, Hainan University, Haikou 570228, China
| | - Renzhen Fan
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Fuzhou 350000, China
| | - Huwei Xing
- Special Glass Key Lab of Hainan Province, School of Materials Science and Engineering, Hainan University, Haikou 570228, China
| | - Yongsheng Fei
- Special Glass Key Lab of Hainan Province, School of Materials Science and Engineering, Hainan University, Haikou 570228, China
| | - Jingru Cheng
- Special Glass Key Lab of Hainan Province, School of Materials Science and Engineering, Hainan University, Haikou 570228, China
| | - Lingbin Lu
- Special Glass Key Lab of Hainan Province, School of Materials Science and Engineering, Hainan University, Haikou 570228, China.
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134
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Tsirkin S, Goldbart R, Traitel T, Kost J. Tailor-Made Single-Core PLGA Microbubbles as Acoustic Cavitation Enhancers for Therapeutic Applications. ACS APPLIED MATERIALS & INTERFACES 2021; 13:25748-25758. [PMID: 34048218 DOI: 10.1021/acsami.1c04770] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Microbubbles (MBs), being gas bubbles encapsulated inside a solid shell, have been investigated extensively in the field of therapeutic ultrasound as acoustic cavitation enhancers. Hard-shell MBs have an advantage over soft-shell MBs due to their improved stability. Poly(lactic-co-glycolic acid) (PLGA) is one of the most attractive polymers for hard-shell MB synthesis; however, very little is known regarding the effect of synthesis parameters on the acoustic cavitation activity of PLGA MBs and the tunability of this activity. In this study, by manipulating the synthesis parameters, we were able to control the characteristics of the MBs, such as their internal structure, gas core, size distribution, and shell thickness, which significantly affect the total acoustic cavitation activity that they exhibit (i.e., their cavitation dose). We showed that single-core MBs filled with C3F8 gas can produce cavitation effects for extended periods under continuous circulation. These MBs exhibited high stability, and their cavitation activity was not affected by prior circulation in the system. Preliminary in vivo results demonstrated that intravenously injected MBs did not cause adverse effects and produced cavitation activity that increased the permeability of the pig blood-brain barrier. Although more tests should be performed to evaluate the MB long-term safety and activity in vivo, these encouraging results suggest that our PLGA MBs have potential for future therapeutic applications as cavitation enhancers.
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Affiliation(s)
- Shani Tsirkin
- Department of Chemical Engineering, Ben-Gurion University of the Negev, 8410501 Beer Sheva, Israel
| | - Riki Goldbart
- Department of Chemical Engineering, Ben-Gurion University of the Negev, 8410501 Beer Sheva, Israel
| | - Tamar Traitel
- Department of Chemical Engineering, Ben-Gurion University of the Negev, 8410501 Beer Sheva, Israel
| | - Joseph Kost
- Department of Chemical Engineering, Ben-Gurion University of the Negev, 8410501 Beer Sheva, Israel
- Ilse Katz Institute for Nanoscale Science and Technology, Ben-Gurion University of the Negev, 8410501 Beer Sheva, Israel
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135
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Hernandez JL, Park J, Yao S, Blakney AK, Nguyen HV, Katz BH, Jensen JT, Woodrow KA. Effect of tissue microenvironment on fibrous capsule formation to biomaterial-coated implants. Biomaterials 2021; 273:120806. [PMID: 33905960 PMCID: PMC8135119 DOI: 10.1016/j.biomaterials.2021.120806] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 03/26/2021] [Accepted: 03/31/2021] [Indexed: 12/19/2022]
Abstract
Within tissue exposed to the systemic immune system, lymphocytes and fibroblasts act against biomaterials via the development of a fibrous capsule, known as the foreign body reaction (FBR). Inspired by the natural tolerance that the uterine cavity has to foreign bodies, our study explores the role of microenvironment across classical (subcutaneous) and immune privileged (uterine) tissues in the development of the FBR. As a model biomaterial, we used electrospun fibers loaded with sclerosing agents to provoke scar tissue growth. Additionally, we integrated these materials onto an intrauterine device as a platform for intrauterine biomaterial studies. Polyester materials in vitro achieved drug release up to 10 days, greater pro-inflammatory and pro-healing cytokine expression, and the addition of gelatin enabled greater fibroblast attachment. We observed the materials that induced the greatest FBR in the mouse, had no effect when inserted at the utero-tubal junction of non-human primates. These results suggest that the FBR varies across different tissue microenvironments, and a dampened fibrotic response exists in the uterine cavity, possibly due to immune privilege. Further study of immune privileged tissue factors on biomaterials could broaden our understanding of the FBR and inform new methods for achieving biocompatibility in vivo.
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Affiliation(s)
- Jamie L Hernandez
- Department of Bioengineering, University of Washington, 3720 15th Ave NE, Seattle, WA, 98105, USA
| | - Jaehyung Park
- Department of Bioengineering, University of Washington, 3720 15th Ave NE, Seattle, WA, 98105, USA
| | - Shan Yao
- Oregon National Primate Research Center, Oregon Health & Science University, 505 NW 185th Ave, Beaverton, OR, 97006, USA
| | - Anna K Blakney
- Department of Bioengineering, University of Washington, 3720 15th Ave NE, Seattle, WA, 98105, USA
| | - Hienschi V Nguyen
- Department of Bioengineering, University of Washington, 3720 15th Ave NE, Seattle, WA, 98105, USA
| | - Bob H Katz
- ContraMed LLC, 900 E. Hamilton Ave, Campbell, CA, 95008, USA
| | - Jeffrey T Jensen
- Oregon National Primate Research Center, Oregon Health & Science University, 505 NW 185th Ave, Beaverton, OR, 97006, USA
| | - Kim A Woodrow
- Department of Bioengineering, University of Washington, 3720 15th Ave NE, Seattle, WA, 98105, USA.
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136
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Borandeh S, van Bochove B, Teotia A, Seppälä J. Polymeric drug delivery systems by additive manufacturing. Adv Drug Deliv Rev 2021; 173:349-373. [PMID: 33831477 DOI: 10.1016/j.addr.2021.03.022] [Citation(s) in RCA: 65] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 01/20/2021] [Accepted: 03/31/2021] [Indexed: 12/29/2022]
Abstract
Additive manufacturing (AM) is gaining interests in drug delivery applications, offering innovative opportunities for the design and development of systems with complex geometry and programmed controlled release profile. In addition, polymer-based drug delivery systems can improve drug safety, efficacy, patient compliance, and are the key materials in AM. Therefore, combining AM and polymers can be beneficial to overcome the existing limitations in the development of controlled release drug delivery systems. Considering these advantages, here we are focusing on the recent developments in the field of polymeric drug delivery systems prepared by AM. This review provides a comprehensive overview on a holistic polymer-AM perspective for drug delivery systems with discussion on the materials, properties, design and fabrication techniques and the mechanisms used to achieve a controlled release system. The current challenges and future perspectives for personalized medicine and clinical use of these systems are also briefly discussed.
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Affiliation(s)
- Sedigheh Borandeh
- Polymer Technology, School of Chemical Engineering, Aalto University, Espoo 02150, Finland
| | - Bas van Bochove
- Polymer Technology, School of Chemical Engineering, Aalto University, Espoo 02150, Finland
| | - Arun Teotia
- Polymer Technology, School of Chemical Engineering, Aalto University, Espoo 02150, Finland
| | - Jukka Seppälä
- Polymer Technology, School of Chemical Engineering, Aalto University, Espoo 02150, Finland.
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Qiu Y, Su M, Liu L, Tang Y, Pan Y, Sun J. Clinical Application of Cytokines in Cancer Immunotherapy. Drug Des Devel Ther 2021; 15:2269-2287. [PMID: 34079226 PMCID: PMC8166316 DOI: 10.2147/dddt.s308578] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 04/20/2021] [Indexed: 12/12/2022] Open
Abstract
Cytokines are key components of the immune system and play pivotal roles in anticancer immune response. Cytokines as either therapeutic agents or targets hold clinical promise for cancer precise treatment. Here, we provide an overview of the various roles of cytokines in the cancer immunity cycle, with a particular focus on the clinical researches of cytokine-based drugs in cancer therapy. We review 27 cytokines in 2630 cancer clinical trials registered with ClinicalTrials.gov that had completed recruitment up to January 2021 while summarizing important cases for each cytokine. We also discuss recent progress in methods for improving the delivery efficiency, stability, biocompatibility, and availability of cytokines in therapeutic applications.
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Affiliation(s)
- Yi Qiu
- Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-Sen University, Guangzhou, People’s Republic of China
- Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, People’s Republic of China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, People’s Republic of China
| | - Mengxi Su
- Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-Sen University, Guangzhou, People’s Republic of China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, People’s Republic of China
| | - Leyi Liu
- Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-Sen University, Guangzhou, People’s Republic of China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, People’s Republic of China
| | - Yiqi Tang
- Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-Sen University, Guangzhou, People’s Republic of China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, People’s Republic of China
| | - Yuan Pan
- Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-Sen University, Guangzhou, People’s Republic of China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, People’s Republic of China
| | - Jianbo Sun
- Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-Sen University, Guangzhou, People’s Republic of China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, People’s Republic of China
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138
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Sordi MB, da Cruz ACC, Aragones Á, Cordeiro MMR, de Souza Magini R. PLGA+HA/βTCP Scaffold Incorporating Simvastatin: A Promising Biomaterial for Bone Tissue Engineering. J ORAL IMPLANTOL 2021; 47:93-101. [PMID: 32699891 DOI: 10.1563/aaid-joi-d-19-00148] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The aim of this study was to synthesize, characterize, and evaluate degradation and biocompatibility of poly(lactic-co-glycolic acid) + hydroxyapatite/β-tricalcium phosphate (PLGA+HA/βTCP) scaffolds incorporating simvastatin (SIM) to verify if this biomaterial might be promising for bone tissue engineering. Samples were obtained by the solvent evaporation technique. Biphasic ceramic particles (70% HA, 30% βTCP) were added to PLGA in a ratio of 1:1. Samples with SIM received 1% (m/m) of this medication. Scaffolds were synthesized in a cylindric shape and sterilized by ethylene oxide. For degradation analysis, samples were immersed in phosphate-buffered saline at 37°C under constant stirring for 7, 14, 21, and 28 days. Nondegraded samples were taken as reference. Mass variation, scanning electron microscopy, porosity analysis, Fourier transform infrared spectroscopy, differential scanning calorimetry, and thermogravimetry were performed to evaluate physico-chemical properties. Wettability and cytotoxicity tests were conducted to evaluate the biocompatibility. Microscopic images revealed the presence of macro-, meso-, and micropores in the polymer structure with HA/βTCP particles homogeneously dispersed. Chemical and thermal analyses presented similar results for both PLGA+HA/βTCP and PLGA+HA/βTCP+SIM. The incorporation of simvastatin improved the hydrophilicity of scaffolds. Additionally, PLGA+HA/βTCP and PLGA+HA/βTCP+SIM scaffolds were biocompatible for osteoblasts and mesenchymal stem cells. In summary, PLGA+HA/βTCP scaffolds incorporating simvastatin presented adequate structural, chemical, thermal, and biological properties for bone tissue engineering.
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Affiliation(s)
- Mariane Beatriz Sordi
- Center for Research on Dental Implants, Department of Dentistry, Federal University of Santa Catarina, Santa Catarina, Brazil
| | | | - Águedo Aragones
- Ceramic & Composite Materials Research Laboratories, Department of Mechanical Engineering, Federal University of Santa Catarina, Santa Catarina, Brazil
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139
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Davoudi Z, Peroutka-Bigus N, Bellaire B, Jergens A, Wannemuehler M, Wang Q. Gut Organoid as a New Platform to Study Alginate and Chitosan Mediated PLGA Nanoparticles for Drug Delivery. Mar Drugs 2021; 19:md19050282. [PMID: 34065505 PMCID: PMC8161322 DOI: 10.3390/md19050282] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 05/17/2021] [Accepted: 05/18/2021] [Indexed: 12/12/2022] Open
Abstract
Intestinal organoids can be used as an ex vivo epithelial model to study different drug delivery effects on epithelial cells’ luminal surface. In this study, the impact of surface charge on the delivery of 5-ASA loaded PLGA nanoparticles into the lumen of organoids was investigated. Alginate and chitosan were used to coat the nanoparticles and provide negative and positive charges on the particles, respectively. The organoid growth and viability were not affected by the presence of either alginate- or chitosan-coated nanoparticles. It was shown that nanoparticles could be transported from the serosal side of the organoids to the lumen as the dye gradually accumulated in the lumen by day 2–3 after adding the nanoparticles to the Matrigel. By day 5, the dye was eliminated from the lumen of the organoids. It was concluded that the positively charged nanoparticles were more readily transported across the epithelium into the lumen. It may be attributed to the affinity of epithelial cells to the positive charge. Thus, the organoid can be utilized as an appropriate model to mimic the functions of the intestinal epithelium and can be used as a model to evaluate the benefits of nanoparticle-based drug delivery.
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Affiliation(s)
- Zahra Davoudi
- Department of Chemical and Biological Engineering, Iowa State University, Ames, IA 50011, USA;
| | - Nathan Peroutka-Bigus
- Department of Veterinary Microbiology and Preventive Medicine, Iowa State University, Ames, IA 50011, USA; (N.P.-B.); (B.B.); (M.W.)
| | - Bryan Bellaire
- Department of Veterinary Microbiology and Preventive Medicine, Iowa State University, Ames, IA 50011, USA; (N.P.-B.); (B.B.); (M.W.)
| | - Albert Jergens
- Department of Veterinary Clinical Sciences, Iowa State University, Ames, IA 50011, USA;
| | - Michael Wannemuehler
- Department of Veterinary Microbiology and Preventive Medicine, Iowa State University, Ames, IA 50011, USA; (N.P.-B.); (B.B.); (M.W.)
| | - Qun Wang
- Department of Chemical and Biological Engineering, Iowa State University, Ames, IA 50011, USA;
- Correspondence: ; Tel.: +1-515-294-4218
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140
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Patel M, Jha A, Patel R. Potential application of PLGA microsphere for tissue engineering. JOURNAL OF POLYMER RESEARCH 2021. [DOI: 10.1007/s10965-021-02562-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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141
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Insight into drug encapsulation in polymeric nanoparticles using microfluidic nanoprecipitation. Chem Eng Sci 2021. [DOI: 10.1016/j.ces.2021.116468] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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142
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da Silva DB, da Silva CL, Davanzo NN, da Silva Souza R, Correa RJ, Tedesco AC, Riemma Pierre MB. Protoporphyrin IX (PpIX) loaded PLGA nanoparticles for topical Photodynamic Therapy of melanoma cells. Photodiagnosis Photodyn Ther 2021; 35:102317. [PMID: 33940210 DOI: 10.1016/j.pdpdt.2021.102317] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 04/20/2021] [Accepted: 04/26/2021] [Indexed: 11/19/2022]
Abstract
INTRODUCTION Nanoparticles (Np) can increase drug efficacy and overcome problems associated with solubility and aggregation in a solution of PpIX. PURPOSE Evaluate if Np interferes in the photophysical and photobiological capacity of the PpIX comparing with free PpIX intended for topical PDT of melanoma. METHODS In vitro photophysical evaluation of Np-PpIX was carried out through singlet oxygen (1O2) quantum yield. In vitro cytotoxicity and phototoxicity assays have used murine melanoma cell culture. RESULTS The quantum yield of singlet oxygen has shown that Np did not influence the formation capacity of this reactive species. In the dark, all PpIX-Nps concentrations were less cytotoxic compared to free drugs. At a higher light dose (1500 mJ.cm2) 3.91 μg / mL PpIX had similar % viable cells for free and Np (∼34 %) meaning Nps did not interfere in the photodynamic effect of PpIX. However, at 7.91 μg / mL the phototoxicity increased for both (5.8 % viable cells for free versus 21.7 % for Nps). Despite the higher phototoxicity of free PpIX at this concentration, greater cytotoxicity in the dark was obtained (∼49 % viable cells for free versus ∼90.6 % Np) which means Nps protect the tumor tissue from the photodynamic action of PpIX. CONCLUSIONS Np is a potential delivery system for melanoma skin cancer, since it maintained the photophysical properties of PpIX and excellent in vitro phototoxicity effect against melanoma cells, reducing cell viability ∼80 % (7.91 μg / mL PpIX in Nps) and provides safe PDT (due to lower cytotoxicity in the dark).
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Affiliation(s)
- Darlan Barbosa da Silva
- School of Pharmacy, Federal University of Rio de Janeiro, Av. Carlos Chagas Filho 373, 21.941.902, Rio de Janeiro, RJ, Brazil
| | - Carolina Loureiro da Silva
- School of Pharmacy, Federal University of Rio de Janeiro, Av. Carlos Chagas Filho 373, 21.941.902, Rio de Janeiro, RJ, Brazil
| | - Nathalia Nossi Davanzo
- Department of Chemistry, Center of Nanotechnology and Tissue Engineering -Photobiology and Photomedicine Research Group, Faculty of Philosophy, Sciences and Letters of Ribeirão Preto, Av. dos Bandeirantes 3900, 14040-901, Vila Monte Alegre, University of São Paulo, Brazil
| | | | | | - Antonio Claudio Tedesco
- Department of Chemistry, Center of Nanotechnology and Tissue Engineering -Photobiology and Photomedicine Research Group, Faculty of Philosophy, Sciences and Letters of Ribeirão Preto, Av. dos Bandeirantes 3900, 14040-901, Vila Monte Alegre, University of São Paulo, Brazil
| | - Maria Bernadete Riemma Pierre
- School of Pharmacy, Federal University of Rio de Janeiro, Av. Carlos Chagas Filho 373, 21.941.902, Rio de Janeiro, RJ, Brazil.
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143
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Chrysafi I, Ainali NM, Bikiaris DN. Thermal Degradation Mechanism and Decomposition Kinetic Studies of Poly(Lactic Acid) and Its Copolymers with Poly(Hexylene Succinate). Polymers (Basel) 2021; 13:1365. [PMID: 33922002 PMCID: PMC8122458 DOI: 10.3390/polym13091365] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 04/16/2021] [Accepted: 04/19/2021] [Indexed: 11/16/2022] Open
Abstract
Ιn this work, new block poly(lactic acid)-block-poly(hexylene succinate) (PLA-b-PHSu) copolymers, in different mass ratios of 95/05, 90/10 and 80/20 w/w, are synthesized and their thermal and mechanical behavior are studied. Thermal degradation and thermal stability of the samples were examined by Thermogravimetric Analysis (TGA), while thermal degradation kinetics was applied to better understand this process. The Friedman isoconversional method and the "model fitting method" revealed accurate results for the activation energy and the reaction mechanisms (nth order and autocatalysis). Pyrolysis-Gas Chromatography/Mass Spectrometry (Py-GC/MS) was used to provide more details of the degradation process with PHSu's mechanism being the β-hydrogen bond scission, while on PLA the intramolecular trans-esterification processes domains. PLA-b-PHSu copolymers decompose also through the β-hydrogen bond scission. The mechanical properties have also been tested to understand how PHSu affects PLA's structure and to give more information about this new material. The tensile measurements gave remarkable results as the elongation at break increases as the content of PHSu increases as well. The study of the thermal and mechanical properties is crucial, to examine if the new material fulfills the requirements for further investigation for medical or other possible uses that might come up.
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Affiliation(s)
- Iouliana Chrysafi
- Laboratory of Advanced Materials and Devices, Department of Physics, Faculty of Sciences, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece;
| | - Nina Maria Ainali
- Laboratory of Polymers Chemistry and Technology, Department of Chemistry, Faculty of Sciences, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece;
| | - Dimitrios N. Bikiaris
- Laboratory of Polymers Chemistry and Technology, Department of Chemistry, Faculty of Sciences, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece;
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144
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Rzepna M, Sadło J, Przybytniak G, Iuliano A. Impact of electron beam treatment on copolymers of polylactide and poly(trimethylene carbonate) in an air atmosphere. J Appl Polym Sci 2021. [DOI: 10.1002/app.50184] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Magdalena Rzepna
- Centre for Radiation Research and Technology Institute of Nuclear Chemistry and Technology Warsaw Poland
| | - Jarosław Sadło
- Centre for Radiation Research and Technology Institute of Nuclear Chemistry and Technology Warsaw Poland
| | - Grażyna Przybytniak
- Centre for Radiation Research and Technology Institute of Nuclear Chemistry and Technology Warsaw Poland
| | - Anna Iuliano
- Faculty of Chemistry Warsaw University of Technology Warsaw Poland
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145
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Tuning morphology of Pickering emulsions stabilised by biodegradable PLGA nanoparticles: How PLGA characteristics influence emulsion properties. J Colloid Interface Sci 2021; 595:202-211. [PMID: 33823323 DOI: 10.1016/j.jcis.2021.03.061] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 03/05/2021] [Accepted: 03/11/2021] [Indexed: 11/20/2022]
Abstract
In this study, we proved that the stabilisation of Pickering emulsions by polymer nanoparticles (NPs) heavily depends on polymer characteristics. We prepared NPs with four poly(lactide-co-glycolide) polymers (PLGA), of different molar masses (14,000 and 32,000 g/mol) and end groups (acid or alkylester). NPs were either bare (without stabilising polymer) or covered by polyvinyl alcohol (PVA). Pickering emulsions were prepared by mixing NP aqueous suspensions with various amounts of oil (Miglyol 812 N). First, NP wettability was directly affected by PLGA end group: ester-ending PLGA led to more hydrophobic NPs, compared to acid-ending PLGA. This effect of the end group could be slightly enhanced with smaller molar mass. Thus, bare PLGA NPs stabilised different types of emulsions (W/O/W and W/O), following Finkle's rule. However, the effect of PLGA characteristics was masked when NPs were covered by PVA, as PVA drove the stabilisation of O/W emulsions. Secondly, PLGA molar mass and end group also influenced its glass transition temperature (Tg), with spectacular consequences on emulsion formation. Indeed, the shortest ester-ending PLGA exhibited a Tg close to room temperature, when measured in the emulsion. This Tg, easily exceeded during emulsification process, led to a soft solid emulsion, stabilised by a network of NP debris.
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146
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Zhi K, Raji B, Nookala AR, Khan MM, Nguyen XH, Sakshi S, Pourmotabbed T, Yallapu MM, Kochat H, Tadrous E, Pernell S, Kumar S. PLGA Nanoparticle-Based Formulations to Cross the Blood-Brain Barrier for Drug Delivery: From R&D to cGMP. Pharmaceutics 2021; 13:pharmaceutics13040500. [PMID: 33917577 PMCID: PMC8067506 DOI: 10.3390/pharmaceutics13040500] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 04/03/2021] [Accepted: 04/05/2021] [Indexed: 12/24/2022] Open
Abstract
The blood–brain barrier (BBB) is a natural obstacle for drug delivery into the human brain, hindering treatment of central nervous system (CNS) disorders such as acute ischemic stroke, brain tumors, and human immunodeficiency virus (HIV)-1-associated neurocognitive disorders. Poly(lactic-co-glycolic acid) (PLGA) is a biocompatible polymer that is used in Food and Drug Administration (FDA)-approved pharmaceutical products and medical devices. PLGA nanoparticles (NPs) have been reported to improve drug penetration across the BBB both in vitro and in vivo. Poly(ethylene glycol) (PEG), poly(vinyl alcohol) (PVA), and poloxamer (Pluronic) are widely used as excipients to further improve the stability and effectiveness of PLGA formulations. Peptides and other linkers can be attached on the surface of PLGA to provide targeting delivery. With the newly published guidance from the FDA and the progress of current Good Manufacturing Practice (cGMP) technologies, manufacturing PLGA NP-based drug products can be achieved with higher efficiency, larger quantity, and better quality. The translation from bench to bed is feasible with proper research, concurrent development, quality control, and regulatory assurance.
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Affiliation(s)
- Kaining Zhi
- Plough Center for Sterile Drug Delivery Solutions, University of Tennessee Health Science Center, 208 South Dudley Street, Memphis, TN 38163, USA; (B.R.); (H.K.)
- Correspondence: (K.Z.); (S.K.)
| | - Babatunde Raji
- Plough Center for Sterile Drug Delivery Solutions, University of Tennessee Health Science Center, 208 South Dudley Street, Memphis, TN 38163, USA; (B.R.); (H.K.)
| | | | - Mohammad Moshahid Khan
- Department of Neurology, College of Medicine, University of Tennessee Health Science Center, 855 Monroe Avenue, Memphis, TN 38163, USA;
| | - Xuyen H. Nguyen
- Department of Pharmaceutical Sciences, University of Tennessee Health Science Center, 881 Madison Ave, Memphis, TN 38163, USA; (X.H.N.); (S.S.); (E.T.); (S.P.)
| | - Swarna Sakshi
- Department of Pharmaceutical Sciences, University of Tennessee Health Science Center, 881 Madison Ave, Memphis, TN 38163, USA; (X.H.N.); (S.S.); (E.T.); (S.P.)
| | - Tayebeh Pourmotabbed
- Department of Microbiology, Immunology and Biochemistry, College of Medicine, University of Tennessee Health Science Center, 858 Madison Avenue, Memphis, TN 38163, USA;
| | - Murali M. Yallapu
- Department of Immunology and Microbiology, University of Texas Rio Grande Valley, McAllen, TX 78504, USA;
| | - Harry Kochat
- Plough Center for Sterile Drug Delivery Solutions, University of Tennessee Health Science Center, 208 South Dudley Street, Memphis, TN 38163, USA; (B.R.); (H.K.)
| | - Erene Tadrous
- Department of Pharmaceutical Sciences, University of Tennessee Health Science Center, 881 Madison Ave, Memphis, TN 38163, USA; (X.H.N.); (S.S.); (E.T.); (S.P.)
| | - Shelby Pernell
- Department of Pharmaceutical Sciences, University of Tennessee Health Science Center, 881 Madison Ave, Memphis, TN 38163, USA; (X.H.N.); (S.S.); (E.T.); (S.P.)
| | - Santosh Kumar
- Department of Pharmaceutical Sciences, University of Tennessee Health Science Center, 881 Madison Ave, Memphis, TN 38163, USA; (X.H.N.); (S.S.); (E.T.); (S.P.)
- Correspondence: (K.Z.); (S.K.)
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147
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He C, Zeng W, Su Y, Sun R, Xiao Y, Zhang B, Liu W, Wang R, Zhang X, Chen C. Microfluidic-based fabrication and characterization of drug-loaded PLGA magnetic microspheres with tunable shell thickness. Drug Deliv 2021; 28:692-699. [PMID: 33818236 PMCID: PMC8023598 DOI: 10.1080/10717544.2021.1905739] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
To overcome the shortcoming of conventional transarterial chemoembolization (cTACE) like high systemic release, a novel droplet-based flow-focusing microfluidic device was fabricated and the biocompatible poly(lactic-co-glycolic acid) (PLGA) magnetic drug-eluting beads transarterial chemoembolization (TACE) microspheres with tunable size and shell thickness were prepared via this device. Paclitaxel, as a model active, was loaded through O/O/W emulsion method with high efficiency. The size and the shell thickness vary when adjusting the flow velocity and/or solution concentration, which caters for different clinical requirements to have different drug loading and release behavior. Under the designed experimental conditions, the average diameter of the microspheres is 60 ± 2 μm and the drug loading efficiency has reached 6%. The drug release behavior of the microspheres shows the combination of delayed release and smoothly sustained release profiles and the release kinetics differ within different shell thickness. The microspheres also own the potential of magnetic resonance imaging (MRI) visuality because of the loaded magnetic nanoparticles. The microsphere preparation method and device we proposed are simple, feasible, and effective, which have a good application prospect.
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Affiliation(s)
- Chunpeng He
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, China
| | - Wenxin Zeng
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, China
| | - Yue Su
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, China
| | - Ruowei Sun
- Hunan Zaochen Nanorobot Co., Ltd, Liuyang, China
| | - Yin Xiao
- Affiliated Haikou Hospital of Xiangya Medical College, Central South University, Haikou, China
| | - Bolun Zhang
- Hunan Zaochen Nanorobot Co., Ltd, Liuyang, China
| | - Wenfang Liu
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, China
| | | | - Xun Zhang
- Hunan Zaochen Nanorobot Co., Ltd, Liuyang, China
| | - Chuanpin Chen
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, China
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Koski C, Sarkar N, Bose S. Cytotoxic and osteogenic effects of crocin and bicarbonate from calcium phosphates for potential chemopreventative and anti-inflammatory applications in vitro and in vivo. J Mater Chem B 2021; 8:2048-2062. [PMID: 32064472 DOI: 10.1039/c9tb01462d] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Delayed healing and nonhealing of bone defects or resected bone sites remains an important clinical concern in the biomedical field. Osteosarcoma is one of the most common types of primary bone cancers. Among calcium phosphates, hydroxyapatite (HA) and tricalcium phosphate (TCP) are the most widely used in various biomedical applications for bone reconstruction and replacement. In this study, crocin, saffron's natural bioactive and anti-inflammatory molecule, and bicarbonate, a neutralizing agent, were directly loaded onto HA disks to evaluate their in vitro release and effect on human osteoblast and osteosarcoma cell lines. This was assessed through release, initial toxicity, drug optimization, final toxicity studies and in vivo anti-inflammatory assessment through H&E indexing. It is hypothesized that the release of crocin, bicarbonate, and the dual release of both agents will decrease osteosarcoma cellular viability with no effect on osteoblast cells. A plateaued release of crocin and bicarbonate was achieved over seven weeks in physiological and acidic environments, where bicarbonate was shown to modulate the release of crocin. Through morphological characterization and MTT assay analysis, bicarbonate showed no toxicity to human fetal osteoblast (hFOB) cells and crocin significantly enhanced osteoblast proliferation. Through drug concentration optimization, all drug loaded samples decreased human osteosarcoma (MG-63) viability by 50% compared to control samples by Day 11, with clear changes in cell spreading and morphology. Moreover, 3D printed TCP scaffolds loaded with crocin and bicarbonate were tested in vivo in order to assess their preliminary effects on inflammation in a rat distal femur model at 4 days. Lower inflammatory cellular recruitment was achieved in the presence of crocin and bicarbonate, compared to the control. These results suggest a pro-apoptotic mechanism against osteosarcoma as well as anti-inflammatory properties of crocin and bicarbonate, elucidating a potential application for osteosarcoma regulation and wound healing for bone tissue regeneration applications.
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Affiliation(s)
- Caitlin Koski
- W. M. Keck Biomedical Materials Research Laboratory, School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, USA.
| | - Naboneeta Sarkar
- W. M. Keck Biomedical Materials Research Laboratory, School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, USA.
| | - Susmita Bose
- W. M. Keck Biomedical Materials Research Laboratory, School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, USA.
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Understanding of how the properties of medical grade lactide based copolymer scaffolds influence adipose tissue regeneration: Sterilization and a systematic in vitro assessment. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 124:112020. [PMID: 33947531 DOI: 10.1016/j.msec.2021.112020] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 02/24/2021] [Accepted: 02/27/2021] [Indexed: 01/22/2023]
Abstract
Aliphatic polyesters are the synthetic polymers most commonly used in the development of resorbable medical implants/devices. Various three-dimensional (3D) scaffolds have been fabricated from these polymers and used in adipose tissue engineering. However, their systematic evaluation altogether lacks, which makes it difficult to select a suitable degradable polymer to design 3D resorbable implants and/or devices able to effectively mimic the properties of adipose tissue. Additionally, the impact of sterilization methods on the medical devices, if any, must be taken into account. We evaluate and compare five different medical-grade resorbable polyesters with l-lactide content ranging from 50 to 100 mol% and exhibiting different physiochemical properties depending on the comonomer (d-lactide, ε-caprolactone, glycolide, and trimethylene carbonate). The salt-leaching technique was used to prepare 3D microporous scaffolds. A comprehensive assessment of physical, chemical, and mechanical properties of the scaffolds was carried out in PBS at 37 °C. The cell-material interactions and the ability of the scaffolds to promote adipogenesis of human adipose tissue-derived stem cells were assessed in vitro. The diverse physical and mechanical properties of the scaffolds, due to the different composition of the copolymers, influenced human adipose tissue-derived stem cells proliferation and differentiation. Scaffolds made from polymers which were above their glass transition temperature and with low degree of crystallinity showed better proliferation and adipogenic differentiation of stem cells. The effect of sterilization techniques (electron beam and ethylene oxide) on the polymer properties was also evaluated. Results showed that scaffolds sterilized with the ethylene oxide method better retained their physical and chemical properties. Overall, the presented research provides (i) a detailed understanding to select a degradable polymer that has relevant properties to augment adipose tissue regeneration and can be further used to fabricate medical devices/implants; (ii) directions to prefer a sterilization method that does not change polymer properties.
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150
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Naskar S, Das SK, Sharma S, Kuotsu K. A Review on Designing Poly (Lactic-co-glycolic Acid) Nanoparticles as Drug Delivery Systems. Pharm Nanotechnol 2021; 9:36-50. [PMID: 33319695 DOI: 10.2174/2211738508666201214103010] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 10/16/2020] [Accepted: 11/02/2020] [Indexed: 12/12/2022]
Abstract
Poly (lactic-co-glycolic acid) (PLGA) is a versatile synthetic polymer comprehensively
used in the pharmaceutical sector because of its biocompatibility and biodegradability. These benefits
lead to its application in the area of nanoparticles (NPs) for drug delivery for over thirty years.
This article offers a general study of the different poly (lactic-co-glycolic acid) nanoparticles (PNPs),
preparation methods such as emulsification-solvent evaporation, coacervation, emulsification
solvent diffusion, dialysis, emulsification reverse salting out, spray drying nanoprecipitation, and
supercritical fluid technology, from the methodological point of view. The physicochemical behavior
of PNPs, including morphology, drug loading, particle size and its distribution, surface
charge, drug release, stability as well as cytotoxicity study and cellular uptake, are briefly discussed.
This survey additionally coordinates to bring a layout of the significant uses of PNPs in different
drug delivery system over the three decades. At last, surface modifications of PNPs and PLGA
nanocomplexes (NCs) are additionally examined.
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Affiliation(s)
- Sweet Naskar
- Department of Pharmaceutical Technology, Jadavpur University, Kolkata-700032, West Bengal, India
| | - Sanjoy Kumar Das
- Institute of Pharmacy, Jalpaiguri, Pin-735101, West Bengal, India
| | - Suraj Sharma
- Department of Pharmaceutical Technology, Jadavpur University, Kolkata-700032, West Bengal, India
| | - Ketousetuo Kuotsu
- Department of Pharmaceutical Technology, Jadavpur University, Kolkata-700032, West Bengal, India
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