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Galrinho MF, Silva LM, Lopes GR, Ferreira BAC, Valente SA, Ferreira I, Pinheiro BA, Palma AS, Evtuguin DV, Lopes da Silva JA, Almeida M, Ferreira P, Cruz MT, Coimbra MA, Passos CP. The study of galactomannans with different molecular weights and their ability to form microparticles suitable for pulmonary delivery. Carbohydr Polym 2024; 339:122268. [PMID: 38823931 DOI: 10.1016/j.carbpol.2024.122268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 05/07/2024] [Accepted: 05/12/2024] [Indexed: 06/03/2024]
Abstract
The influence of locust bean gum (LBG) galactomannans (GMs) molecular weight (Mw) to assemble microparticulate systems was evaluated, and carriers for deep lung delivery were developed. A commercial batch of LBG with a mannose/galactose (M/G) ratio of 2.4 (batch 1) was used to study the influence of different microwave partial acid hydrolysis conditions on carbohydrate composition, glycosidic linkages, and aqueous solutions viscosity. The microwave treatment did not affect the composition, presenting 4-Man (36-42 %), 4,6-Man (27-35 %), and T-Gal (24-25 %) as the main glycosidic linkages. Depolymerization led to a viscosity reduction (≤0.005 Pa·s) with no major impact on polysaccharide debranching. The structural composition of the LBG galactomannans were further elucidated with sequence-specific proteins using carbohydrate microarray technologies. A second batch of LBG (M/G 3.3) was used to study the impact of GMs with different Mw on microparticle assembling, characteristics, and insulin release kinetics. The low-Mw GMs microparticles led to a faster release (20 min) than the higher-Mw (40 min) ones, impacting the release kinetics. All microparticles exhibited a safety profile to cells of the respiratory tract. However, only the higher-Mw GMs allowed the assembly of microparticles with sizes suitable for this type of administration.
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Affiliation(s)
- Miguel F Galrinho
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Lisete M Silva
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - Guido R Lopes
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Bernardo A C Ferreira
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Sara A Valente
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Isabel Ferreira
- Centro de Neurociências e Biologia Celular e Centro de Inovação em Biomedicina e Biotecnologia, Universidade de Coimbra, Azinhaga de Santa Comba, 3004-517 Coimbra, Portugal; Faculdade de Farmácia da Universidade de Coimbra, Universidade de Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal
| | - Benedita A Pinheiro
- UCIBIO, Applied Molecular Biosciences Unit, Department of Chemistry/Department of Life Sciences, School of Science and Technology, NOVA University of Lisbon, 2829-516 Lisbon, Portugal; Associate Laboratory i4HB, Institute for Health and Bioeconomy, School of Science and Technology, NOVA University Lisbon, 2819-516, Caparica, Portugal
| | - Angelina S Palma
- UCIBIO, Applied Molecular Biosciences Unit, Department of Chemistry/Department of Life Sciences, School of Science and Technology, NOVA University of Lisbon, 2829-516 Lisbon, Portugal; Associate Laboratory i4HB, Institute for Health and Bioeconomy, School of Science and Technology, NOVA University Lisbon, 2819-516, Caparica, Portugal
| | - Dmitry V Evtuguin
- CICECO, Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - José A Lopes da Silva
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Margarida Almeida
- CICECO, Aveiro Institute of Materials, Department of Materials and Ceramic Engineering, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Paula Ferreira
- CICECO, Aveiro Institute of Materials, Department of Materials and Ceramic Engineering, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Maria T Cruz
- Centro de Neurociências e Biologia Celular e Centro de Inovação em Biomedicina e Biotecnologia, Universidade de Coimbra, Azinhaga de Santa Comba, 3004-517 Coimbra, Portugal; Faculdade de Farmácia da Universidade de Coimbra, Universidade de Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal
| | - Manuel A Coimbra
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Cláudia P Passos
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal.
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2
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Darge H, Addisu KD, Tsai HC, Birhan YS, Hanurry EY, Mekonnen TW, Gebrie HT, Arunagiri V, Thankachan D, Wu TY, Lai JY, Chang HM, Huang CC, Wu SY. Actively Targeting Redox-Responsive Multifunctional Micelles for Synergistic Chemotherapy of Cancer. ACS OMEGA 2024; 9:34268-34280. [PMID: 39157138 PMCID: PMC11325410 DOI: 10.1021/acsomega.3c09817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 05/08/2024] [Accepted: 05/16/2024] [Indexed: 08/20/2024]
Abstract
Stimuli-responsive polymeric micelles decorated with cancer biomarkers represent an optimal choice for drug delivery applications due to their ability to enhance therapeutic efficacy while mitigating adverse side effects. Accordingly, we synthesized a digoxin-modified novel multifunctional redox-responsive disulfide-linked poly(ethylene glycol-b-poly(lactic-co-glycolic acid) copolymer (Bi(Dig-PEG-PLGA)-S2) for the targeted and controlled release of doxorubicin (DOX) in cancer cells. Within the micellar aggregate, the disulfide bond confers redox responsiveness, while the presence of the digoxin moiety acts as a targeting agent and chemosensitizer for DOX. Upon self-assembly in aqueous solution, Bi(Dig-PEG-PLGA)-S2 formed uniformly distributed spherical micelles with a hydrodynamic diameter (D h ) of 58.36 ± 0.78 nm and a zeta potential of -24.71 ± 1.01 mV. The micelles exhibited desirable serum and colloidal stability with a substantial drug loading capacity (DLC) of 6.26% and an encapsulation efficiency (EE) of 83.23%. In addition, the release of DOX demonstrated the redox-responsive behavior of the micelles, with approximately 89.41 ± 6.09 and 79.64 ± 6.68% of DOX diffusing from DOX@Bi(Dig-PEG-PLGA)-S2 in the presence of 10 mM GSH and 0.1 mM H2O2, respectively, over 96 h. Therefore, in HeLa cell lines, DOX@Bi(Dig-PEG-PLGA)-S2 showed enhanced intracellular accumulation and subsequent apoptotic effects, attributed to the targeting ability and chemosensitization potential of digoxin. Hence, these findings underscore the promising characteristics of Bi(Dig-PEG-PLGA)-S2 as a multifunctional drug delivery vehicle for cancer treatment.
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Affiliation(s)
- Haile
Fentahun Darge
- Graduate
Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
- College
of Medicine and Health Science, Bahir Dar
University, P.O. Box
79, Bahir Dar 00000, Ethiopia
- Centre
for Ocular Research & Education (CORE), School of Optometry and
Vision Science, University of Waterloo, 200 Columbia St W., Waterloo N2L 3W8, Canada
| | - Kefyalew Dagnew Addisu
- Graduate
Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
- Institute
of Technology, Bahir Dar University, P.O. Box 79, Bahir Dar 00000, Ethiopia
| | - Hsieh-Chih Tsai
- Graduate
Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
- Advanced
Membrane Materials Center, National Taiwan
University of Science and Technology, Taipei 10607, Taiwan
- R&D
Center
for Membrane Technology, Chung Yuan University, Chung-Li 320, Taiwan
| | - Yihenew Simegniew Birhan
- Graduate
Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
- Department
of Chemistry, College of Natural and Computational Sciences, Debre Markos University, P.O. Box 269, Debre Markos 00000, Ethiopia
| | - Endris Yibru Hanurry
- Graduate
Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
- School
of Medicine, Health Science College, Addis
Ababa University, P.O.
Box 1176, Addis Ababa 00000, Ethiopia
| | - Tefera Worku Mekonnen
- Graduate
Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
| | - Hailemichael Tegenu Gebrie
- Graduate
Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
| | - Vinothini Arunagiri
- Graduate
Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
| | - Darieo Thankachan
- Graduate
Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
| | - Tsung-Yun Wu
- Graduate
Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
| | - Juin-Yih Lai
- Graduate
Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
- Advanced
Membrane Materials Center, National Taiwan
University of Science and Technology, Taipei 10607, Taiwan
- R&D
Center
for Membrane Technology, Chung Yuan University, Chung-Li 320, Taiwan
| | - Hao-Ming Chang
- Division
of General Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei 114, Taiwan
| | - Chun-Chiang Huang
- Taiwan
Instrument Research Institute, National
Applied Research Laboratories, Hsinchu 300, Taiwan
| | - Szu-Yuan Wu
- Department
of Food Nutrition and Health Biotechnology, College of Medical and
Health Science, Asia University, Taichung 413, Taiwan
- Big
Data Center, Lo-Hsu Medical Foundation, Lotung Poh-Ai Hospital, Yilan 256, Taiwan
- Division
of Radiation Oncology, Department of Medicine, Lo-Hsu Medical Foundation, Lotung Poh-Ai Hospital, Yilan 256, Taiwan
- Department
of Healthcare Administration, College of Medical and Health Science, Asia University, Taichung 413, Taiwan
- Cancer
Center, Lo-Hsu Medical Foundation, Lotung
Poh-Ai Hospital, Yilan 256, Taiwan
- Graduate
Institute of Business Administration, Fu
Jen Catholic University, Taipei 242, Taiwan
- Centers
for Regional Anesthesia and Pain Medicine, Taipei Municipal Wan Fang
Hospital, Taipei Medical University, Taipei 110, Taiwan
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Yuan J, Hou Q, He X, Zhong L, Li M, Fu X, Liu H. Chitosan-taurine nanoparticles cross-linked carboxymethyl chitosan hydrogels facilitate both acute and chronic diabetic wound healing. Int J Biol Macromol 2024; 273:132762. [PMID: 38876232 DOI: 10.1016/j.ijbiomac.2024.132762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Revised: 05/16/2024] [Accepted: 05/28/2024] [Indexed: 06/16/2024]
Abstract
Wound dressing diligently facilitate healing by fostering hemostasis, immunoregulation, the angiogenesis, and collagen deposition. Our methodology entails fabricating chitosan-taurine nanoparticles (CS-Tau) through an ionic gelation method. The morphology of CS-Tau was observed utilizing Transmission electron microscopy (TEM), scanning electron microscopy (SEM) and Dynamic Light Scattering (DLS). The nanoparticles are subsequently incorporated into carboxymethyl chitosan hydrogels for crosslinking by EDC-NHS, yielding hydrogel dressings (CMCS-CS-Tau) designed to extend the duration of taurine release. In vitro investigations confirmed that these innovative compound dressings displayed superior biodegradation, biocompatibility, cytocompatibility, and non-toxicity, in addition to possessing anti-inflammatory properties, and stimulating the proliferation and mobility of human umbilical vein endothelial cells (HUVECs). Experiments conducted on mice models with full-thickness skin removal demonstrated that CMCS-CS-Tau efficaciously aided in wound healing by spurring angiogenesis, and encouraging collagen deposition. CMCS-CS-Tau can also minimize inflammation and promote collagen deposition in chronic diabetic wound. Hence, CMCS-CS-Tau promotes both acute and chronic diabetic wound healing. Furthermore, the sustained release mechanism of CMCS-CS-Tau on taurine reveals promising potential for extending its clinical utility in relation to various biological effects of taurine.
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Affiliation(s)
- Jifang Yuan
- Institute of Stomatology & Oral Maxilla Facial Key Laboratory, First Medical Center of Chinese PLA General Hospital, Beijing 100853, China; Research Center for Tissue Repair and Regeneration affiliated to the Medical Innovation Research Department, PLA General Hospital and PLA Medical College, Beijing 100853, China; PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, Beijing 100048, China; Research Unit of Trauma Care, Tissue Repair and Regeneration, Chinese Academy of Medical Sciences, 2019RU051, Beijing 100048, China
| | - Qian Hou
- Research Center for Tissue Repair and Regeneration affiliated to the Medical Innovation Research Department, PLA General Hospital and PLA Medical College, Beijing 100853, China
| | - Xiaofeng He
- Department of Diagnostic Radiology, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - Lingzhi Zhong
- Basic Medical Department, Graduate School, Chinese PLA General Hospital, Beijing 100853, China
| | - Meirong Li
- Research Center for Tissue Repair and Regeneration affiliated to the Medical Innovation Research Department, PLA General Hospital and PLA Medical College, Beijing 100853, China; Center for Drug Evaluation, National Medical Products Administration, Beijing 100076, China.
| | - Xiaobing Fu
- Research Center for Tissue Repair and Regeneration affiliated to the Medical Innovation Research Department, PLA General Hospital and PLA Medical College, Beijing 100853, China; PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, Beijing 100048, China; Research Unit of Trauma Care, Tissue Repair and Regeneration, Chinese Academy of Medical Sciences, 2019RU051, Beijing 100048, China.
| | - Hongchen Liu
- Institute of Stomatology & Oral Maxilla Facial Key Laboratory, First Medical Center of Chinese PLA General Hospital, Beijing 100853, China.
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4
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Panigrahi SK, Das S, Majumdar S. Unveiling the potentials of hydrophilic and hydrophobic polymers in microparticle systems: Opportunities and challenges in processing techniques. Adv Colloid Interface Sci 2024; 326:103121. [PMID: 38457900 DOI: 10.1016/j.cis.2024.103121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 02/24/2024] [Accepted: 02/28/2024] [Indexed: 03/10/2024]
Abstract
Conventional drug delivery systems are associated with various shortcomings, including low bioavailability and limited control over release. Biodegradable polymeric microparticles have emerged as versatile carriers in drug delivery systems addressing all these challenges. This comprehensive review explores the dynamic landscape of microparticles, considering the role of hydrophilic and hydrophobic materials. Within the continuously evolving domain of microparticle preparation methods, this review offers valuable insights into the latest advancements and addresses the factors influencing microencapsulation, which is pivotal for harnessing the full potential of microparticles. Exploration of the latest research in this dynamic field unlocks the possibilities of optimizing microencapsulation techniques to produce microparticles of desired characteristics and properties for different applications, which can help contribute to the ongoing evolution in the field of pharmaceutical science.
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Affiliation(s)
- Subrat Kumar Panigrahi
- Department of Chemical Engineering, Indian Institute of Technology, Hyderabad, Telangana 502285, India
| | - Sougat Das
- Department of Chemical Engineering, Indian Institute of Technology, Hyderabad, Telangana 502285, India
| | - Saptarshi Majumdar
- Department of Chemical Engineering, Indian Institute of Technology, Hyderabad, Telangana 502285, India.
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5
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Morla-Folch J, Ranzenigo A, Fayad ZA, Teunissen AJP. Nanotherapeutic Heterogeneity: Sources, Effects, and Solutions. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2307502. [PMID: 38050951 PMCID: PMC11045328 DOI: 10.1002/smll.202307502] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 10/30/2023] [Indexed: 12/07/2023]
Abstract
Nanomaterials have revolutionized medicine by enabling control over drugs' pharmacokinetics, biodistribution, and biocompatibility. However, most nanotherapeutic batches are highly heterogeneous, meaning they comprise nanoparticles that vary in size, shape, charge, composition, and ligand functionalization. Similarly, individual nanotherapeutics often have heterogeneously distributed components, ligands, and charges. This review discusses nanotherapeutic heterogeneity's sources and effects on experimental readouts and therapeutic efficacy. Among other topics, it demonstrates that heterogeneity exists in nearly all nanotherapeutic types, examines how nanotherapeutic heterogeneity arises, and discusses how heterogeneity impacts nanomaterials' in vitro and in vivo behavior. How nanotherapeutic heterogeneity skews experimental readouts and complicates their optimization and clinical translation is also shown. Lastly, strategies for limiting nanotherapeutic heterogeneity are reviewed and recommendations for developing more reproducible and effective nanotherapeutics provided.
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Affiliation(s)
- Judit Morla-Folch
- Biomedical Engineering and Imaging Institute, Icahn School of Medicine at Mount Sinai, New York, 10029, NY, USA
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Anna Ranzenigo
- Biomedical Engineering and Imaging Institute, Icahn School of Medicine at Mount Sinai, New York, 10029, NY, USA
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Zahi Adel Fayad
- Biomedical Engineering and Imaging Institute, Icahn School of Medicine at Mount Sinai, New York, 10029, NY, USA
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Abraham Jozef Petrus Teunissen
- Biomedical Engineering and Imaging Institute, Icahn School of Medicine at Mount Sinai, New York, 10029, NY, USA
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
- Icahn Genomics Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
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Sunazuka Y, Ueda K, Higashi K, Wada K, Moribe K. Mechanistic Analysis of Temperature-Dependent Curcumin Release from Poly(lactic-co-glycolic acid)/Poly(lactic acid) Polymer Nanoparticles. Mol Pharm 2024; 21:1424-1435. [PMID: 38324797 DOI: 10.1021/acs.molpharmaceut.3c01066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
In this study, we investigated the mechanism of curcumin (CUR) release from poly(lactic-co-glycolic acid) (PLGA) and poly(lactic acid) (PLA) nanoparticles (NPs) by evaluating the temperature-dependent CUR release. NPs were prepared by the nanoprecipitation method using various PLGA/PLA polymers with different lactic:glycolic ratios (L:G ratios) and molecular weights. Increasing the polymer molecular weight resulted in a decrease in the particle size of NPs. The wet glass transition temperature (Tg) of PLGA/PLA NPs was lower than the intrinsic polymer Tg, which can be derived from the water absorption and nanosizing of the polymer. The reduction in Tg was more significant for the PLGA/PLA NPs with lower polymer L:G ratios and lower polymer molecular weight. The greater decrease of Tg in the lower polymer L:G ratios was possibly caused by the higher water absorption due to the more hydrophilic nature of the glycolic acid segment than that of the lactic acid segment. The efficient water absorption in PLGA/PLA NPs with lower molecular weight could cause a significant reduction of Tg as it has lower hydrophobicity. CUR release tests from the PLGA/PLA NPs exhibited enhanced CUR release with increasing temperatures, irrespective of polymer species. By fitting the CUR release profiles into mathematical models, the CUR release process was well described by an initial burst release followed by a diffusion-controlled release. The wet Tg and particle size of the PLGA/PLA NPs affected the amount and temperature dependence of the initial burst release of CUR. Above the wet Tg of NPs, the initial burst release of CUR increased sharply. Smaller particle sizes of PLGA/PLA NPs led to a higher fraction of initial CUR burst release, which was more pronounced above the wet Tg of NPs. The wet Tg and particle sizes of the PLGA/PLA NPs also influenced the diffusion-controlled CUR release. The diffusion rate of CUR in the NPs increased as the wet Tg values of the NPs decreased. The diffusion path length of CUR was affected by the particle size, with larger particle size resulting in a prolonged diffusion-controlled release of CUR. This study highlighted that for the formulation development of PLGA/PLA NPs, suitable PLGA/PLA polymers should be selected considering the physicochemical properties of PLGA/PLA NPs and their correlation with the release behavior of encapsulated drugs at the application temperature.
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Affiliation(s)
- Yushi Sunazuka
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
- Nippon Boehringer Ingelheim Co. Ltd., 6-7-5 Minatojima-Minamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Keisuke Ueda
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Kenjirou Higashi
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Koichi Wada
- Nippon Boehringer Ingelheim Co. Ltd., 6-7-5 Minatojima-Minamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Kunikazu Moribe
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
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Wang M, Wang S, Zhang C, Ma M, Yan B, Hu X, Shao T, Piao Y, Jin L, Gao J. Microstructure Formation and Characterization of Long-Acting Injectable Microspheres: The Gateway to Fully Controlled Drug Release Pattern. Int J Nanomedicine 2024; 19:1571-1595. [PMID: 38406600 PMCID: PMC10888034 DOI: 10.2147/ijn.s445269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Accepted: 01/24/2024] [Indexed: 02/27/2024] Open
Abstract
Long-acting injectable microspheres have been on the market for more than three decades, but if calculated on the brand name, only 12 products have been approved by the FDA due to numerous challenges in achieving a fully controllable drug release pattern. Recently, more and more researches on the critical factors that determine the release kinetics of microspheres shifted from evaluating the typical physicochemical properties to exploring the microstructure. The microstructure of microspheres mainly includes the spatial distribution and the dispersed state of drug, PLGA and pores, which has been considered as one of the most important characteristics of microspheres, especially when comparative characterization of the microstructure (Q3) has been recommended by the FDA for the bioequivalence assessment. This review extracted the main variables affecting the microstructure formation from microsphere formulation compositions and preparation processes and highlighted the latest advances in microstructure characterization techniques. The further understanding of the microsphere microstructure has significant reference value for the development of long-acting injectable microspheres, particularly for the development of the generic microspheres.
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Affiliation(s)
- Mengdi Wang
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, 100850, People’s Republic of China
| | - Shan Wang
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, 100850, People’s Republic of China
| | - Changhao Zhang
- College of Pharmacy, Key Laboratory of Natural Medicines of the Changbai Mountain of Ministry of Education, Yanbian University, Yanji, Jilin, 133002, People’s Republic of China
| | - Ming Ma
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, 100850, People’s Republic of China
| | - Bohua Yan
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, 100850, People’s Republic of China
| | - Xinming Hu
- College of Pharmacy, Key Laboratory of Natural Medicines of the Changbai Mountain of Ministry of Education, Yanbian University, Yanji, Jilin, 133002, People’s Republic of China
| | - Tianjiao Shao
- College of Pharmacy, Key Laboratory of Natural Medicines of the Changbai Mountain of Ministry of Education, Yanbian University, Yanji, Jilin, 133002, People’s Republic of China
| | - Yan Piao
- College of Pharmacy, Key Laboratory of Natural Medicines of the Changbai Mountain of Ministry of Education, Yanbian University, Yanji, Jilin, 133002, People’s Republic of China
| | - Lili Jin
- College of Pharmacy, Key Laboratory of Natural Medicines of the Changbai Mountain of Ministry of Education, Yanbian University, Yanji, Jilin, 133002, People’s Republic of China
| | - Jing Gao
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, 100850, People’s Republic of China
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Sinsinbar G, Bindra AK, Liu S, Chia TW, Yoong Eng EC, Loo SY, Lam JH, Schultheis K, Nallani M. Amphiphilic Block Copolymer Nanostructures as a Tunable Delivery Platform: Perspective and Framework for the Future Drug Product Development. Biomacromolecules 2024; 25:541-563. [PMID: 38240244 DOI: 10.1021/acs.biomac.3c00858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2024]
Abstract
Nanoformulation of active payloads or pharmaceutical ingredients (APIs) has always been an area of interest to achieve targeted, sustained, and efficacious delivery. Various delivery platforms have been explored, but loading and delivery of APIs have been challenging because of the chemical and structural properties of these molecules. Polymersomes made from amphiphilic block copolymers (ABCPs) have shown enormous promise as a tunable API delivery platform and confer multifold advantages over lipid-based systems. For example, a COVID booster vaccine comprising polymersomes encapsulating spike protein (ACM-001) has recently completed a Phase I clinical trial and provides a case for developing safe drug products based on ABCP delivery platforms. However, several limitations need to be resolved before they can reach their full potential. In this Perspective, we would like to highlight such aspects requiring further development for translating an ABCP-based delivery platform from a proof of concept to a viable commercial product.
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Affiliation(s)
- Gaurav Sinsinbar
- ACM Biolabs Pte Ltd., 71 Nanyang Drive, #02M-02, NTU Innovation Center, Singapore 638075, Singapore
| | - Anivind Kaur Bindra
- ACM Biolabs Pte Ltd., 71 Nanyang Drive, #02M-02, NTU Innovation Center, Singapore 638075, Singapore
| | - Shaoqiong Liu
- ACM Biolabs Pte Ltd., 71 Nanyang Drive, #02M-02, NTU Innovation Center, Singapore 638075, Singapore
| | - Teck Wan Chia
- ACM Biolabs Pte Ltd., 71 Nanyang Drive, #02M-02, NTU Innovation Center, Singapore 638075, Singapore
| | - Eunice Chia Yoong Eng
- ACM Biolabs Pte Ltd., 71 Nanyang Drive, #02M-02, NTU Innovation Center, Singapore 638075, Singapore
| | - Ser Yue Loo
- ACM Biolabs Pte Ltd., 71 Nanyang Drive, #02M-02, NTU Innovation Center, Singapore 638075, Singapore
| | - Jian Hang Lam
- ACM Biolabs Pte Ltd., 71 Nanyang Drive, #02M-02, NTU Innovation Center, Singapore 638075, Singapore
| | - Katherine Schultheis
- ACM Biolabs Pte Ltd., 71 Nanyang Drive, #02M-02, NTU Innovation Center, Singapore 638075, Singapore
| | - Madhavan Nallani
- ACM Biolabs Pte Ltd., 71 Nanyang Drive, #02M-02, NTU Innovation Center, Singapore 638075, Singapore
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9
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Ren Z, Wang Y, Wu H, Cong H, Yu B, Shen Y. Preparation and application of hemostatic microspheres containing biological macromolecules and others. Int J Biol Macromol 2024; 257:128299. [PMID: 38008144 DOI: 10.1016/j.ijbiomac.2023.128299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Revised: 11/18/2023] [Accepted: 11/18/2023] [Indexed: 11/28/2023]
Abstract
Bleeding from uncontrollable wounds can be fatal, and the body's clotting mechanisms are unable to control bleeding in a timely and effective manner in emergencies such as battlefields and traffic accidents. For irregular and inaccessible wounds, hemostatic materials are needed to intervene to stop bleeding. Hemostatic microspheres are promising for hemostasis, as their unique structural features can promote coagulation. There is a wide choice of materials for the preparation of microspheres, and the modification of natural macromolecular materials such as chitosan to enhance the hemostatic properties and make up for the deficiencies of synthetic macromolecular materials makes the hemostatic microspheres multifunctional and expands the application fields of hemostatic microspheres. Here, we focus on the hemostatic mechanism of different materials and the preparation methods of microspheres, and introduce the modification methods, related properties and applications (in cancer therapy) for the structural characteristics of hemostatic microspheres. Finally, we discuss the future trends of hemostatic microspheres and research opportunities for developing the next generation of hemostatic microsphere materials.
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Affiliation(s)
- Zekai Ren
- College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao 266071, China
| | - Yumei Wang
- College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao 266071, China
| | - Han Wu
- College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao 266071, China
| | - Hailin Cong
- College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao 266071, China; School of Materials Science and Engineering, Shandong University of Technology, Zibo 255000, China.
| | - Bing Yu
- College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao 266071, China; State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao 266071, China.
| | - Youqing Shen
- College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao 266071, China; Key Laboratory of Biomass Chemical Engineering of Ministry of Education, Center for Bionanoengineering, Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, China
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10
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Meng T, Sudarjat H, Momin M, Ma JX, Xu Q. Development of uniform fenofibrate-loaded biodegradable microparticle by membrane emulsification. Int J Pharm 2024; 650:123675. [PMID: 38061500 PMCID: PMC10843658 DOI: 10.1016/j.ijpharm.2023.123675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 11/09/2023] [Accepted: 12/03/2023] [Indexed: 12/17/2023]
Abstract
Fenofibrate has shown therapeutic effects on diabetic retinopathy. However, fenofibrate can be rapidly cleared from the eye after a single intravitreal injection. Here, we aim to develop fenofibrate loaded PLGA microparticles (Feno-MP) with high drug loading and sustained in vitro release up to 6 months suitable for intravitreal injection. First, orthogonal array experimental design was applied for formulation optimization. The selected formulation parameters were used to formulate Feno-MP using homogenization method and direct membrane emulsification method. Both methods generated Feno-MP with high drug loading and sustained in vitro drug release more than 140 days. Unlike the polydisperse Feno-MP prepared using homogenization method, membrane emulsification method generated Feno-MP with uniform size distribution. By controlling the membrane pore size, 1.5 µm, 8 µm and 16 µm Feno-MP were formulated and we found that larger Feno-MP demonstrated higher drug loading, more sustained drug release in vitro with less burst drug release than the smaller Feno-MP. In conclusion, we developed Feno-MP with high drug loading and sustained release profile, and elucidated that changing the particle size could have notable impacts on drug loading and release kinetics. Formulating Feno-MP with uniform size distribution by membrane emulsification method would benefit the batch-to-batch repeatability.
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Affiliation(s)
- Tuo Meng
- Department of Pharmaceutics, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Hadi Sudarjat
- Department of Pharmaceutics, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Mohammad Momin
- Department of Pharmaceutics, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Jian-Xing Ma
- Department of Biochemistry, Wake Forest University School of Medicine, Winston-Salem, NC 27157, USA
| | - Qingguo Xu
- Department of Pharmaceutics, Virginia Commonwealth University, Richmond, VA 23298, USA; Department of Ophthalmology, Virginia Commonwealth University, Richmond, VA 23298, USA; Center for Pharmaceutical Engineering, and Institute for Structural Biology, Drug Discovery & Development (ISB3D), Massey Cancer Center, Virginia Commonwealth University, Richmond, VA 23298, USA.
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11
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Amoyav B, Bloom AI, Goldstein Y, Miller R, Sharam M, Fluksman A, Benny O. Drug-Eluting Porous Embolic Microspheres for Trans-Arterial Delivery of Dual Synergistic Anticancer Therapy for the Treatment of Liver Cancer. Adv Healthc Mater 2023; 12:e2301548. [PMID: 37315950 DOI: 10.1002/adhm.202301548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Indexed: 06/16/2023]
Abstract
Blockage of blood supply while administering chemotherapy to tumors, using trans-arterial chemoembolization (TACE), is the most common treatment for intermediate and advanced-stage unresectable Hepatocellular carcinoma (HCC). However, HCC is characterized by a poor prognosis and high recurrence rates (≈30%), partly due to a hypoxic pro-angiogenic and pro-cancerous microenvironment. This study investigates how modifying tissue stress while improving drug exposure in target organs may maximize the therapeutic outcomes. Porous degradable polymeric microspheres (MS) are designed to obtain a gradual occlusion of the hepatic artery that nourishes the liver, while enabling efficient drug perfusion to the tumor site. The fabricated porous MS are introduced intrahepatically and designed to release a combination therapy of Doxorubicin (DOX) and Tirapazamine (TPZ), which is a hypoxia-activated prodrug. Liver cancer cell lines that are treated with the combination therapy under hypoxia reveal a synergic anti-proliferation effect. An orthotopic liver cancer model, based on N1-S1 hepatoma in rats, is used for the efficacy, biodistribution, and safety studies. Porous DOX-TPZ MS are very effective in suppressing tumor growth in rats, and induction tissue necrosis is associated with high intratumor drug concentrations. Porous particles without drugs show some advantages over nonporous particles, suggesting that morphology may affect the treatment outcomes.
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Affiliation(s)
- Benzion Amoyav
- The Institute for Drug Research, School of Pharmacy, The Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, 91120, Israel
| | - Allan I Bloom
- Department of Medical Imaging-Interventional Radiology, Hadassah Medical Center, Jerusalem, 911200, Israel
| | - Yoel Goldstein
- The Institute for Drug Research, School of Pharmacy, The Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, 91120, Israel
| | - Rafael Miller
- Department of General Surgery, Kaplan Medical Center, Affiliated to Hebrew University Jerusalem, Rehovot, 76100, Israel
| | - Mariana Sharam
- Authority for Biological and Biomedical Models, Hadassah Medical Center, Jerusalem, 911200, Israel
| | - Arnon Fluksman
- The Institute for Drug Research, School of Pharmacy, The Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, 91120, Israel
| | - Ofra Benny
- The Institute for Drug Research, School of Pharmacy, The Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, 91120, Israel
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Avendaño-Godoy J, Miranda A, Mennickent S, Gómez-Gaete C. Intramuscularly Administered PLGA Microparticles for Sustained Release of Rivastigmine: In Vitro, In Vivo and Histological Evaluation. J Pharm Sci 2023; 112:3175-3184. [PMID: 37595752 DOI: 10.1016/j.xphs.2023.08.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Revised: 08/13/2023] [Accepted: 08/14/2023] [Indexed: 08/20/2023]
Abstract
Rivastigmine is an acetylcholinesterase (AchE) and butyrylcholinesterase (BchE) inhibitor drug approved by the US Food and Drug Administration (FDA) for the treatment of mild to moderate dementia of Alzheimer's type. However, its first-pass metabolism and gastrointestinal side effects negatively affect the tolerability and efficacy of oral therapy. These adverse effects could be avoided with the use of a sustained -release formulation as an intramuscular (IM) administration system. The objective of this work was to develop polylactic co-glycolic acid (PLGA) microparticles for the sustained release of rivastigmine and to evaluate its stability during storage, tissue tolerance, in vitro release, and in vivo pharmacokinetics after its IM administration. The microparticles were made by the solvent evaporation emulsion method. A series of formulation parameters (the type of polymer used, the amount of polymer used, the initial amount of rivastigmine, and the volume of PVA 0.1% w/v) were studied to achieve an encapsulation efficiency (EE) and a rivastigmine load of 54.8 ± 0.9% and 3.3 ± 0.1%, respectively. The microparticles, whose size was 56.1 ± 2.8 μm, had a spherical shape and a smooth surface. FT-IR analysis showed that there is no chemical interaction between rivastigmine and the polymer. PLGA microparticles maintain rivastigmine retained and stable under normal (5 ± 3 °C) and accelerated storage (25 ± 2 °C and 60 ± 5 % RH) conditions for at least 6 months. The microparticles behaved as a sustained release system both in vitro and in vivo compared to non-encapsulated rivastigmine. The IM administration of the formulation in rats did not produce significant tissue damage. However, it is necessary to reproduce the experiments with multiple doses to rule out a negative effect in terms of tolerability in chronic treatment. To the best of our knowledge, this study is the only one that has obtained the sustained release of rivastigmine from PLGA microparticles after IM administration in an in vivo model.
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Affiliation(s)
- Javier Avendaño-Godoy
- Departamento de Farmacia, Facultad de Farmacia, Universidad de Concepción, Concepción, Chile
| | - Arnoldo Miranda
- Escuela de Química y Farmacia, Facultad de Medicina y Ciencia, Universidad San Sebastián, Concepción, Chile
| | - Sigrid Mennickent
- Departamento de Farmacia, Facultad de Farmacia, Universidad de Concepción, Concepción, Chile
| | - Carolina Gómez-Gaete
- Departamento de Farmacia, Facultad de Farmacia, Universidad de Concepción, Concepción, Chile.
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13
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Bassand C, Siepmann F, Benabed L, Verin J, Freitag J, Charlon S, Soulestin J, Siepmann J. 3D printed PLGA implants: How the filling density affects drug release. J Control Release 2023; 363:1-11. [PMID: 37714435 DOI: 10.1016/j.jconrel.2023.09.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 07/22/2023] [Accepted: 09/10/2023] [Indexed: 09/17/2023]
Abstract
Different types of ibuprofen-loaded, poly (D,L lactic-co-glycolic acid) (PLGA)-based implants were prepared by 3D printing (Droplet Deposition Modeling). The theoretical filling density of the mesh-shaped implants was varied from 10 to 100%. Drug release was measured in agarose gels and in well agitated phosphate buffer pH 7.4. The key properties of the implants (and dynamic changes thereof upon exposure to the release media) were monitored using gravimetric measurements, optical microscopy, Differential Scanning Calorimetry, Gel Permeation Chromatography, and Scanning Electron Microscopy. Interestingly, drug release was similar for implants with 10 and 30% filling density, irrespective of the experimental set-up. In contrast, implants with 100% filling density showed slower release kinetics, and the shape of the release curve was altered in agarose gels. These observations could be explained by the existence (or absence) of a continuous aqueous phase between the polymeric filaments and the "orchestrating role" of substantial system swelling for the control of drug release. At lower filling densities, it is sufficient for the drug to be released from a single filament. In contrast, at high filling densities, the ensemble of filaments acts as a much larger (more or less homogeneous) polymeric matrix, and the average diffusion pathway to be overcome by the drug is much longer. Agarose gel (mimicking living tissue) hinders substantial PLGA swelling and delays the onset of the final rapid drug release phase. This improved mechanistic understanding of the control of drug release from PLGA-based 3D printed implants can help to facilitate the optimization of this type of advanced drug delivery systems.
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Affiliation(s)
- C Bassand
- Univ. Lille, Inserm, CHU Lille, U1008, F-59000 Lille, France
| | - F Siepmann
- Univ. Lille, Inserm, CHU Lille, U1008, F-59000 Lille, France
| | - L Benabed
- Univ. Lille, Inserm, CHU Lille, U1008, F-59000 Lille, France
| | - J Verin
- Univ. Lille, Inserm, CHU Lille, U1008, F-59000 Lille, France
| | - J Freitag
- Univ. Lille, Inserm, CHU Lille, U1008, F-59000 Lille, France
| | - S Charlon
- IMT Lille Douai, Dept Polymers & Composites Technol & Mech Engn, F-59500 Douai, France
| | - J Soulestin
- IMT Lille Douai, Dept Polymers & Composites Technol & Mech Engn, F-59500 Douai, France
| | - J Siepmann
- Univ. Lille, Inserm, CHU Lille, U1008, F-59000 Lille, France.
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14
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Otte A, Soh BK, Park K. The Impact of Post-Processing Temperature on PLGA Microparticle Properties. Pharm Res 2023; 40:2677-2685. [PMID: 37589826 PMCID: PMC10840666 DOI: 10.1007/s11095-023-03568-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Accepted: 07/13/2023] [Indexed: 08/18/2023]
Abstract
PURPOSE Biodegradable poly(lactide-co-glycolide) (PLGA) microparticles loaded with either risperidone or naltrexone were prepared from an emulsification homogenization process. The objective of this study was to determine the impact the post-treatment temperature has on the properties and subsequent performance of the microparticles. METHODS The post-treatment temperature of an ethanolic solution was characterized from 10 ~ 35ºC for the naltrexone and risperidone micropartilces. RESULTS The wash temperature resulted in a typical triphasic in vitro release pattern at low wash temperatures or a biphasic pattern consisting of an elevated release rate at higher post-treatment temperatures. The post-treatment temperature largely influences the particle morphology, residual solvent levels, glass transition temperature, and drug loading and is molecule dependent, whereby these characteristics subsequently influence the drug release rate. CONCLUSION The study highlights the importance of both the post-treatment process and control during manufacturing to obtain a formulation within the desired product profile.
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Affiliation(s)
- Andrew Otte
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, 47907, USA.
- Department of Industrial and Physical Pharmacy, Purdue University, West Lafayette, IN, 47907, USA.
| | - Bong Kwan Soh
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, 47907, USA
- Chong Kun Dang Pharmaceuticals Inc, Seoul, Republic of Korea
| | - Kinam Park
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, 47907, USA
- Department of Industrial and Physical Pharmacy, Purdue University, West Lafayette, IN, 47907, USA
- Akina, Inc, West Lafayette, IN, 47906, USA
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15
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Avlani D, Kumar A, H N S. Development of Dispersible Vaginal Tablets of Tenofovir Loaded Mucoadhesive Chitosan Microparticles for Anti-HIV Pre-Exposure Prophylaxis. Mol Pharm 2023; 20:5006-5018. [PMID: 37656937 DOI: 10.1021/acs.molpharmaceut.3c00288] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/03/2023]
Abstract
Tenofovir disoproxil fumarate (TDF)-loaded bioadhesive chitosan microparticles (CM) were developed by an emulsification internal gelation technique. Among different batches produced, ECH-4 was found to display a high % entrapment efficiency (68.93 ± 1.76%) and sustained drug release of 88.05 ± 0.38% at 24 h. Solid state characterization of ECH-4 employing DSC and PXRD indicated that the TDF existed in an amorphous state as a solid-solid solution in chitosan. Scanning electron microscopy revealed CM of ECH-4 was spherical in shape with a rough surface topography. Laser scattering analysis using Malvern Master sizer indicated that particle size of ECH-4 was in the range of 0.52 ± 0.10 μm to 284.79 ± 21.42 μm with a surface-mean diameter of 12.41 ± 0.06 μm. Ex vivo mucoadhesion studies using rabbit mucosa as a substrate indicated that 10.34 ± 2.08% of CM of ECH-4 was retained at the end of 24 h. The microparticles of ECH-4 were incorporated into dispersible tablets (DT-TCM) intended for intravaginal administration, in view to arrest the pre-exposure transmission of HIV during sexual intercourse. In vitro release from the dispersible tablet (F3) into simulated vaginal fluid (pH 4.5) displayed a sustained release profile of TDF as 89.98 ± 1.61% of TDF was released at 24 h. The in vitro dissolution profile of the DT-TCM was found to be similar to that of TDF loaded CM with the values of f1 (difference factor) and f2 (similarity factor) being 1.52 and 78.02, respectively. Therefore, DT-TCM would be a promising novel drug delivery platform for pre-exposure prophylaxis against HIV.
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Affiliation(s)
- Dhruti Avlani
- Department of Pharmaceutics, Dr. Prabhakar B Kore Basic Science Research Center, Off-campus, KLE College of Pharmacy (A constituent unit of KAHER-Belagavi), Rajajinagar, Bengaluru 560010 Karnataka, India
| | - Avichal Kumar
- Department of Pharmaceutics, Dr. Prabhakar B Kore Basic Science Research Center, Off-campus, KLE College of Pharmacy (A constituent unit of KAHER-Belagavi), Rajajinagar, Bengaluru 560010 Karnataka, India
| | - Shivakumar H N
- Department of Pharmaceutics, Dr. Prabhakar B Kore Basic Science Research Center, Off-campus, KLE College of Pharmacy (A constituent unit of KAHER-Belagavi), Rajajinagar, Bengaluru 560010 Karnataka, India
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16
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Sagoe PNK, Velázquez EJM, Espiritusanto YM, Gilbert A, Orado T, Wang Q, Jain E. Fabrication of PEG-PLGA Microparticles with Tunable Sizes for Controlled Drug Release Application. Molecules 2023; 28:6679. [PMID: 37764454 PMCID: PMC10534673 DOI: 10.3390/molecules28186679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 09/08/2023] [Accepted: 09/12/2023] [Indexed: 09/29/2023] Open
Abstract
Polymeric microparticles of polyethyleneglycol-polylactic acid-co-glycolic acid (PEG-PLGA) are widely used as drug carriers for a variety of applications due to their unique characteristics. Although existing techniques for producing polymeric drug carriers offer the possibility of achieving greater production yield across a wide range of sizes, these methods are improbable to precisely tune particle size while upholding uniformity of particle size and morphology, ensuring consistent production yield, maintaining batch-to-batch reproducibility, and improving drug loading capacity. Herein, we developed a novel scalable method for the synthesis of tunable-sized microparticles with improved monodispersity and batch-to-batch reproducibility via the coaxial flow-phase separation technique. The study evaluated the effect of various process parameters on microparticle size and polydispersity, including polymer concentration, stirring rate, surfactant concentration, and the organic/aqueous phase flow rate and volume ratio. The results demonstrated that stirring rate and polymer concentration had the most significant impact on the mean particle size and distribution, whereas surfactant concentration had the most substantial impact on the morphology of particles. In addition to synthesizing microparticles of spherical morphology yielding particle sizes in the range of 5-50 µm across different formulations, we were able to also synthesize several microparticles exhibiting different morphologies and particle concentrations as a demonstration of the tunability and scalability of this method. Notably, by adjusting key determining process parameters, it was possible to achieve microparticle sizes in a comparable range (5-7 µm) for different formulations despite varying the concentration of polymer and volume of polymer solution in the organic phase by an order of magnitude. Finally, by the incorporation of fluorescent dyes as model hydrophilic and hydrophobic drugs, we further demonstrated how polymer amount influences drug loading capacity, encapsulation efficiency, and release kinetics of these microparticles of comparable sizes. Our study provides a framework for fabricating both hydrophobic and hydrophilic drug-loaded microparticles and elucidates the interplay between fabrication parameters and the physicochemical properties of microparticles, thereby offering an itinerary for expanding the applicability of this method for producing polymeric microparticles with desirable characteristics for specific drug delivery applications.
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Affiliation(s)
- Paul Nana Kwame Sagoe
- Department of Biomedical and Chemical Engineering, Bioinspired Syracuse: Institute for Material and Living System, Syracuse University, Syracuse, NY 13244, USA; (P.N.K.S.); (Y.M.E.); (T.O.)
| | | | - Yohely Maria Espiritusanto
- Department of Biomedical and Chemical Engineering, Bioinspired Syracuse: Institute for Material and Living System, Syracuse University, Syracuse, NY 13244, USA; (P.N.K.S.); (Y.M.E.); (T.O.)
| | - Amelia Gilbert
- Department of Biomedical Engineering, Rochester Institute of Technology, Rochester, NY 14623, USA;
| | - Thalma Orado
- Department of Biomedical and Chemical Engineering, Bioinspired Syracuse: Institute for Material and Living System, Syracuse University, Syracuse, NY 13244, USA; (P.N.K.S.); (Y.M.E.); (T.O.)
| | - Qiu Wang
- School of Education, Syracuse University, Syracuse, NY 13244, USA;
| | - Era Jain
- Department of Biomedical and Chemical Engineering, Bioinspired Syracuse: Institute for Material and Living System, Syracuse University, Syracuse, NY 13244, USA; (P.N.K.S.); (Y.M.E.); (T.O.)
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Chandrashekar A, Beig A, Wang Y, Schwendeman SP. In vitro performance of composition-equivalent PLGA microspheres encapsulating exenatide acetate by solvent evaporation. Int J Pharm 2023; 643:123213. [PMID: 37423376 DOI: 10.1016/j.ijpharm.2023.123213] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 07/04/2023] [Accepted: 07/06/2023] [Indexed: 07/11/2023]
Abstract
The once-weekly Bydureon® (Bdn) PLGA microsphere formulation encapsulating the GLP-1 receptor agonist, exenatide acetate, is an important complex injectable product prepared by coacervation for the treatment of type 2 diabetic patients. Encapsulation by coacervation is useful to minimize an undesirable initial burst of exenatide, but it suffers from manufacturing difficulties such as process scale-up and batch-to-batch variations. Herein we prepared exenatide acetate-PLGA formulations of similar compositions using the desirable alternative double emulsion-solvent evaporation technique. After screening several process variables, we varied the PLGA concentration, the hardening temperature, and the collected particle size range, and determined the resulting drug and sucrose loading, initial burst release, in vitro retention kinetics, and peptide degradation profiles using Bdn as a positive control. All formulations exhibited a triphasic release profile with a burst, lag, and rapid release phase, although the burst release was greatly decreased to <5% for some. Marked differences were observed in the peptide degradation profiles, particularly the oxidized and acylated fractions, when the polymer concentration was varied. For one optimal formulation, the release and peptide degradation profiles were similar to Bdn microspheres, albeit with an induction time shift of one week, likely due to the slightly higher Mw of PLGA in Bdn. These results highlight the effects of key manufacturing variables on drug release and stability in composition-equivalent microspheres encapsulating exenatide acetate and indicate the potential of manufacturing the microsphere component of Bdn by solvent evaporation.
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Affiliation(s)
- Aishwarya Chandrashekar
- Department of Pharmaceutical Sciences and the Biointerfaces Institute, University of Michigan, 2800 Plymouth Road, Ann Arbor, MI 48109, USA
| | - Avital Beig
- Department of Pharmaceutical Sciences and the Biointerfaces Institute, University of Michigan, 2800 Plymouth Road, Ann Arbor, MI 48109, USA
| | - Yan Wang
- Office of Research and Standards, Office of Generic Drugs, Center for Drug Evaluation and Research, U.S. Food and Drug Administration, Silver Spring, MD 20993, USA
| | - Steven P Schwendeman
- Department of Pharmaceutical Sciences and the Biointerfaces Institute, University of Michigan, 2800 Plymouth Road, Ann Arbor, MI 48109, USA; Department of Biomedical Engineering, University of Michigan, 2200 Bonisteel Blvd., Ann Arbor, MI 48109, USA.
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18
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Pastorin G, Benetti C, Wacker MG. From in vitro to in vivo: A comprehensive guide to IVIVC development for long-acting therapeutics. Adv Drug Deliv Rev 2023; 199:114906. [PMID: 37286087 DOI: 10.1016/j.addr.2023.114906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 05/22/2023] [Accepted: 05/31/2023] [Indexed: 06/09/2023]
Affiliation(s)
- Giorgia Pastorin
- Department of Pharmacy, Faculty of Science, National University of Singapore, Singapore.
| | - Camillo Benetti
- Department of Pharmacy, Faculty of Science, National University of Singapore, Singapore
| | - Matthias G Wacker
- Department of Pharmacy, Faculty of Science, National University of Singapore, Singapore
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19
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Baldelli A, Koivisto L, Oguzlu H, Guo Y, Häkkinen L, Pratap Singh A, Larjava H. Spray-dried microparticles of encapsulated gefitinib for slow-release localized treatment of periodontal disease. Int J Pharm 2023:123137. [PMID: 37364780 DOI: 10.1016/j.ijpharm.2023.123137] [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: 01/31/2023] [Revised: 06/08/2023] [Accepted: 06/09/2023] [Indexed: 06/28/2023]
Abstract
Periodontal disease (PD) can be prevented by local or systemic application of epidermal growth factor receptor inhibitors (EGFRIs) that stabilize αvβ6 integrin levels in the periodontal tissue, leading to an increase in the expression of anti-inflammatory cytokines, such as transforming growth factor-β1. Systemic EGFRIs have side effects and, therefore, local treatment of PD applied into the periodontal pockets would be preferrable. Thus, we have developed slow-release three-layered microparticles of gefitinib, a commercially available EGFRI. A combination of different polymers [cellulose acetate butyrate (CAB), Poly (D, L-lactide-co-glycolide) (PLGA) and ethyl cellulose (EC)] and sugars [D-mannose, D-mannitol and D-(+)-trehalose dihydrate] were used for the encapsulation. The optimal formulation was composed of CAB, EC, PLGA, mannose and gefitinib (0.59, 0.24, 0.09, 1, and 0.005 mg/ml, respectively; labeled CEP-gef), and created microparticles of 5.7 ± 2.3 µm in diameter, encapsulation efficiency of 99.98%, and a release rate of more than 300 hours. A suspension of this microparticle formulation blocked EGFR phosphorylation and restored αvβ6 integrin levels in oral epithelial cells, while the respective control microparticles showed no effect.
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Affiliation(s)
| | - Leeni Koivisto
- Faculty of Dentistry, Department of Oral Biological and Medical Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Hale Oguzlu
- Sustainable Functional Biomaterials Laboratory, Department of Wood Science, The University of British Columbia
| | - Yigong Guo
- Food and Land Systems, The University of British Columbia
| | - Lari Häkkinen
- Faculty of Dentistry, Department of Oral Biological and Medical Sciences, University of British Columbia, Vancouver, BC, Canada
| | | | - Hannu Larjava
- Faculty of Dentistry, Department of Oral Biological and Medical Sciences, University of British Columbia, Vancouver, BC, Canada
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20
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Wang Y, Wang C, Sylvers J, Segura T, Yuan F. Nanoenhancer for improving naked DNA electrotransfection In vivo. Front Bioeng Biotechnol 2023; 11:1181795. [PMID: 37229498 PMCID: PMC10203387 DOI: 10.3389/fbioe.2023.1181795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Accepted: 04/25/2023] [Indexed: 05/27/2023] Open
Abstract
Introduction: Electrotransfection (ET) is a non-viral approach widely used for delivery of naked nucleic acids. Its efficiency can be increased in vitro by treatment of cells with various small molecule enhancers. However, these enhancers often fail to improve ET in vivo, presumably due to rapid clearance in tissues after local injection, reducing their cellular uptake. To this end, we propose to develop a new type of ET enhancers, which we term nanoenhancer, that diffuse slowly in tissues and are poorly absorbed by blood and lymph microvessels. Methods: Two nanoenhancers were synthesized with alginate (Alg) and chitosan (Chi) with or without poly (ethylene imine) (PEI). They were used to treat cells in vitro or mouse muscle in the hind leg in vivo prior to ET of plasmid DNA coding reporter genes. At 24 hours post ET, the efficiency of ET was quantified, and compared with that in the untreated controls. Changes in lysosomal size and acidity post nanoenhancer treatment were measured with fluorescence microscopy techniques. Results and discussion: We observed that the pretreatment of cells with the nanoenhancers could enhance the ET efficiency and cell viability in both C2C12 and HCT116 cells in vitro, and the nanoenhancer pretreatment had similar effects on the ET efficiency in vivo. Mechanisms of the enhancement were related to transient inactivation of lysosomal functions triggered by the nanoenhancer treatment. The concept of nanoenhancer will lead to development of new enhancers that can be used to improve ET efficiency in vivo, highlighting its potential in clinical applications.
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Pereira ED, da Silva Dutra L, Paiva TF, de Almeida Carvalho LL, Rocha HVA, Pinto JC. In Vitro Release and In Vivo Pharmacokinetics of Praziquantel Loaded in Different Polymer Particles. MATERIALS (BASEL, SWITZERLAND) 2023; 16:ma16093382. [PMID: 37176262 PMCID: PMC10180028 DOI: 10.3390/ma16093382] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 04/08/2023] [Accepted: 04/14/2023] [Indexed: 05/15/2023]
Abstract
Approximately 1 billion people are affected by neglected diseases around the world. Among these diseases, schistosomiasis constitutes one of the most important public health problems, being caused by Schistosoma mansoni and treated through the oral administration of praziquantel (PZQ). Despite being a common disease in children, the medication is delivered in the form of large, bitter-tasting tablets, which makes it difficult for patients to comply with the treatment. In order to mask the taste of the drug, allow more appropriate doses for children, and enhance the absorption by the body, different polymer matrices based on poly(methyl methacrylate) (PMMA) were developed and used to encapsulate PZQ. Polymer matrices included PMMA nano- and microparticles, PMMA-co-DEAEMA (2-(diethylamino)ethyl methacrylate), and PMMA-co-DMAEMA (2-(dimethylamino)ethyl methacrylate) microparticles. The performances of the drug-loaded particles were characterized in vitro through dissolution tests and in vivo through pharmacokinetic analyses in rats for the first time. The in vitro dissolution studies were carried out in accordance with the Brazilian Pharmacopeia and revealed a good PZQ release profile in an acidic medium for the PMMA-DEAEMA copolymer, reaching values close to 100 % in less than 3 h. The in vivo pharmacokinetic analyses were conducted using free PZQ as the control group that was compared with the investigated matrices. The drug was administered orally at doses of 60 mg/kg, and the PMMA-co-DEAEMA copolymer microparticles were found to be the most efficient release system among the investigated ones, reaching a Cmax value of 1007 ± 83 ng/mL, even higher than that observed for free PZQ, which displayed a Cmax value of 432 ± 98 ng/mL.
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Affiliation(s)
- Emiliane Daher Pereira
- Programa de Engenharia Química/COPPE, Universidade Federal do Rio de Janeiro, Cidade Universitária, CP: 68502, Rio de Janeiro 21941-972, RJ, Brazil
| | - Luciana da Silva Dutra
- Programa de Engenharia Química/COPPE, Universidade Federal do Rio de Janeiro, Cidade Universitária, CP: 68502, Rio de Janeiro 21941-972, RJ, Brazil
| | - Thamiris Franckini Paiva
- SENAI CETIQT, Instituto SENAI de Inovação em Biossintéticos e Fibras, Cidade Universitária, Rua Fernando de Souza Barros, Rio de Janeiro 21941-857, RJ, Brazil
| | - Larissa Leite de Almeida Carvalho
- Programa de Engenharia de Processos Químicos e Bioquímicos/EQ, Universidade Federal do Rio de Janeiro, Cidade Universitária, Rio de Janeiro 21949-900, RJ, Brazil
| | - Helvécio Vinícius Antunes Rocha
- Laboratório de Micro e Nanotecnologia, Instituto de Tecnologia de Fármacos-Farmanguinhos, Fundação Oswaldo Cruz, Rio de Janeiro 21040-361, RJ, Brazil
| | - José Carlos Pinto
- Programa de Engenharia Química/COPPE, Universidade Federal do Rio de Janeiro, Cidade Universitária, CP: 68502, Rio de Janeiro 21941-972, RJ, Brazil
- Programa de Engenharia de Processos Químicos e Bioquímicos/EQ, Universidade Federal do Rio de Janeiro, Cidade Universitária, Rio de Janeiro 21949-900, RJ, Brazil
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22
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Mihaela Raţă D, Niculina Cadinoiu A, Ionut Atanase L, Calin Mihalache G, Popa M. Design and characterization of dexamethasone phosphate -loaded microcapsules obtained by a double-emulsion method. Int J Pharm 2023; 639:122971. [PMID: 37105242 DOI: 10.1016/j.ijpharm.2023.122971] [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: 01/12/2023] [Revised: 04/12/2023] [Accepted: 04/15/2023] [Indexed: 04/29/2023]
Abstract
Polymeric microcapsules are extensively investigated as drug delivery systems for a broad range of applications. In the present study, Dexamethasone-loaded carboxylated chitosan (CCS)/poly (vinyl alcohol) (PVA)-based microcapsules were prepared in view of their potential administration by inhalation for the treatment of lung diseases. The crosslinking between PVA and CCS was activated by [4-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-methylmorpholinium chloride] (DMT-MM) and the FTIR results proved the formation of ester bonds between the two polymers. The sizes of the obtained microcapsules are influenced by the ratio between the polymers but also by the concentration of the DMT-MM activator. Moreover, the amount of PVA in the system has an important influence on swelling degree, encapsulation efficiency, drug release degree, biodegradation and protein adsorption. The sample with the highest amount of PVA has the highest crosslinking density and thus the lowest swelling degree and encapsulation efficiency. However, an encapsulation degree of 61.3% was obtained for the sample MCP-6 with the lowest PVA content. The same sample showed the lowest BSA adsorption. A controlled and sustained Dexamethasone release of around 90% was observed in PBS at pH 7.4 and 37°C during 24 h. All the obtained samples were hemocompatibles and thus can be used as efficient drug delivery systems.
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Affiliation(s)
- Delia Mihaela Raţă
- "Apollonia" University of Iasi, Pacurari Street, No. 11, 700511, Iasi, Romania
| | | | - Leonard Ionut Atanase
- "Apollonia" University of Iasi, Pacurari Street, No. 11, 700511, Iasi, Romania; Academy of Romanian Scientists, Ilfov Street, No. 3, Sector 5, 050045, Bucharest, Romania
| | | | - Marcel Popa
- "Apollonia" University of Iasi, Pacurari Street, No. 11, 700511, Iasi, Romania; Academy of Romanian Scientists, Ilfov Street, No. 3, Sector 5, 050045, Bucharest, Romania
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23
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Mudjahid M, Meidianto Asri R, Nainu F, Dian Permana A. Validation of spectrophotometric method to quantify chloramphenicol in fluid and rat skin tissue mimicking infection environment: Application to in vitro release and ex vivo dermatokinetic studies from dissolving microneedle loaded microparticle sensitive bacteria. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 291:122374. [PMID: 36682254 DOI: 10.1016/j.saa.2023.122374] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 12/15/2022] [Accepted: 01/12/2023] [Indexed: 06/17/2023]
Abstract
Cellulitis is a common dermis/subcutaneous tissue skin infection and shared global disease burden, with a higher incidence for males and people aged 45-64 years. Application therapy of chloramphenicol (CHL) has been hindered because of its toxicity and limited penetration into the skin. In this research, CHL was developed into a bacterially sensitive microparticles which were further incorporated into a microneedle system to increase penetration. To support this formulation, in this study, UV-vis spectrophotometry method was validated in methanol, polyvinyl alcohol (PVA) 1%, phosphate buffered saline (PBS), tryptic soy broth (TSB) (fluid-mimicking infection), and skin tissue to quantify amount of CHL. The developed analytical method was subsequently validated according to ICH guidelines. The results obtained showed that the correlation coefficients were linear ≥0.9934. The values of LLOQ inside the methanol, PVA 1%, PBS, TSB, and skin tissue were 7.20 µg/mL, 4.40 µg/mL, 8.18 µg/mL, 387.48 µg/mL, and 7.27 µg/mL, respectively. The accuracy and precision of the developed method were prominent. These methods were successfully applied to quantify the amount of CHL in microparticle and microneedle system in fluid and tissue skin infection. The result showed the high drug release microparticle sensitive bacteria, and high drug retention in ex vivo dermatokinetic evaluation in rat skin tissue containing bacterial infection. This was due to the presence of Staphylococcus aureus bacteria culture that produced lipase enzymes, playing a role in lysing microparticle matrix to develop selectively delivery antimicrobials. A further analytical method needs to be matured to quantify CHL inside the in vivo studies.
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Affiliation(s)
- Mukarram Mudjahid
- Faculty of Pharmacy, Hasanuddin University, Makassar 90245, Indonesia
| | | | - Firzan Nainu
- Faculty of Pharmacy, Hasanuddin University, Makassar 90245, Indonesia
| | - Andi Dian Permana
- Faculty of Pharmacy, Hasanuddin University, Makassar 90245, Indonesia.
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24
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Mirek A, Grzeczkowicz M, Belaid H, Bartkowiak A, Barranger F, Abid M, Wasyłeczko M, Pogorielov M, Bechelany M, Lewińska D. Electrospun UV-cross-linked polyvinylpyrrolidone fibers modified with polycaprolactone/polyethersulfone microspheres for drug delivery. BIOMATERIALS ADVANCES 2023; 147:213330. [PMID: 36773381 DOI: 10.1016/j.bioadv.2023.213330] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 01/24/2023] [Accepted: 02/02/2023] [Indexed: 06/18/2023]
Abstract
Electrospun fibers, often used as drug delivery systems, have two drawbacks - in the first stage of their action a sudden active substance burst release occurs and they have a relatively small capacity for a drug. In this work the fibers are modified by the addition of drug-loaded microspheres acting as micro-containers for the drug and increasing the total drug capacity of the system. Its release from such a structure is slowed down by placing the microspheres inside the fibers so they are covered with an outer layer of fiber-forming polymer. The work presents a new method (microsphere suspension electrospinning) of obtaining polyvinylpyrrolidone fibers cross-linked with UV light modified with polycaprolactone/polyethersulphone microspheres loaded with active substance - rhodamine 640 as a marker or ampicillin as a drug example. The influence of UV-cross-linking time and the microspheres addition on the degradation, mechanical strength and transport properties of fibrous mats was investigated. The mats were insoluble in water, in some cases mechanically stronger, their drug capacity was increased and the burst effect was eliminated. The antibacterial properties of ampicillin-loaded mats were confirmed. The product of proposed suspension electrospinning process has application potential as a drug delivery system.
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Affiliation(s)
- Adam Mirek
- Nalecz Institute of Biocybernetics and Biomedical Engineering, Polish Academy of Sciences, 4 Ks. Trojdena St., 02-109 Warsaw, Poland; Institut Européen des Membranes, IEM, UMR 5635, Univ Montpellier, CNRS, ENSCM Place Eugène Bataillon, 34095 Montpellier cedex 5, France.
| | - Marcin Grzeczkowicz
- Nalecz Institute of Biocybernetics and Biomedical Engineering, Polish Academy of Sciences, 4 Ks. Trojdena St., 02-109 Warsaw, Poland
| | - Habib Belaid
- Institut Européen des Membranes, IEM, UMR 5635, Univ Montpellier, CNRS, ENSCM Place Eugène Bataillon, 34095 Montpellier cedex 5, France
| | - Aleksandra Bartkowiak
- Nalecz Institute of Biocybernetics and Biomedical Engineering, Polish Academy of Sciences, 4 Ks. Trojdena St., 02-109 Warsaw, Poland
| | - Fanny Barranger
- Institut Européen des Membranes, IEM, UMR 5635, Univ Montpellier, CNRS, ENSCM Place Eugène Bataillon, 34095 Montpellier cedex 5, France
| | - Mahmoud Abid
- Institut Européen des Membranes, IEM, UMR 5635, Univ Montpellier, CNRS, ENSCM Place Eugène Bataillon, 34095 Montpellier cedex 5, France
| | - Monika Wasyłeczko
- Nalecz Institute of Biocybernetics and Biomedical Engineering, Polish Academy of Sciences, 4 Ks. Trojdena St., 02-109 Warsaw, Poland
| | - Maksym Pogorielov
- Sumy State University, Medical Institute, 40018 Sumy, Ukraine; NanoPrime, 32-900 Dębica, Poland
| | - Mikhael Bechelany
- Institut Européen des Membranes, IEM, UMR 5635, Univ Montpellier, CNRS, ENSCM Place Eugène Bataillon, 34095 Montpellier cedex 5, France
| | - Dorota Lewińska
- Nalecz Institute of Biocybernetics and Biomedical Engineering, Polish Academy of Sciences, 4 Ks. Trojdena St., 02-109 Warsaw, Poland
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25
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Avendaño-Godoy J, Poblete MG, Ramos RG, Gómez-Gaete C. Evaluation of the Effects of Gamma Radiation Sterilization on Rhein-Loaded Biodegradable Microparticles for the Treatment of Osteoarthritis. J Pharm Sci 2023; 112:837-843. [PMID: 36347357 DOI: 10.1016/j.xphs.2022.11.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 11/02/2022] [Accepted: 11/02/2022] [Indexed: 11/06/2022]
Abstract
In previous work, we reported on the design of biodegradable rhein-loaded PLGA microparticles for the treatment of osteoarthritis. Considering that a formulation designed for intra-articular administration must meet sterility requirements to guarantee its safety, in this study the effect of gamma radiation sterilization on these microparticles was evaluated. The size, morphology, and surface characteristics of the microparticles and the encapsulation efficiency of rhein were not affected by the sterilization process. Although DSC and PXRD analyses suggested otherwise, rhein release profiles were not altered by gamma radiation. The release of rhein from the microparticles was fitted to a Gompertz model. In conclusion, the results of this study suggest that gamma radiation is a suitable method for the sterilization of rhein-loaded PLGA microparticles to enable their intra-articular administration in order to provide a therapeutic solution to patients suffering from chronic joint diseases.
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Affiliation(s)
- Javier Avendaño-Godoy
- Departamento de Farmacia, Facultad de Farmacia, Universidad de Concepción, Concepción, Chile
| | - Maria Gabriela Poblete
- Departamento de Farmacia, Facultad de Farmacia, Universidad de Concepción, Concepción, Chile
| | - Ricardo Godoy Ramos
- Departamento de Farmacia, Facultad de Farmacia, Universidad de Concepción, Concepción, Chile
| | - Carolina Gómez-Gaete
- Departamento de Farmacia, Facultad de Farmacia, Universidad de Concepción, Concepción, Chile.
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26
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Horvath D, Basler M. PLGA Particles in Immunotherapy. Pharmaceutics 2023; 15:pharmaceutics15020615. [PMID: 36839937 PMCID: PMC9965784 DOI: 10.3390/pharmaceutics15020615] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 02/06/2023] [Accepted: 02/07/2023] [Indexed: 02/16/2023] Open
Abstract
Poly(lactic-co-glycolic acid) (PLGA) particles are a widely used and extensively studied drug delivery system. The favorable properties of PLGA such as good bioavailability, controlled release, and an excellent safety profile due to the biodegradable polymer backbone qualified PLGA particles for approval by the authorities for the application as a drug delivery platform in humas. In recent years, immunotherapy has been established as a potent treatment option for a variety of diseases. However, immunomodulating drugs rely on targeted delivery to specific immune cell subsets and are often rapidly eliminated from the system. Loading of PLGA particles with drugs for immunotherapy can protect the therapeutic compounds from premature degradation, direct the drug delivery to specific tissues or cells, and ensure sustained and controlled drug release. These properties present PLGA particles as an ideal platform for immunotherapy. Here, we review recent advances of particulate PLGA delivery systems in the application for immunotherapy in the fields of allergy, autoimmunity, infectious diseases, and cancer.
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Affiliation(s)
- Dennis Horvath
- Division of Immunology, Department of Biology, University of Konstanz, D-78457 Konstanz, Germany
- Centre for the Advanced Study of Collective Behaviour, University of Konstanz, D-78457 Konstanz, Germany
| | - Michael Basler
- Division of Immunology, Department of Biology, University of Konstanz, D-78457 Konstanz, Germany
- Biotechnology Institute Thurgau (BITg) at the University of Konstanz, CH-8280 Kreuzlingen, Switzerland
- Correspondence:
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27
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Haghighat Bayan MA, Dias YJ, Rinoldi C, Nakielski P, Rybak D, Truong YB, Yarin AL, Pierini F. Near‐infrared light activated core‐shell electrospun nanofibers decorated with photoactive plasmonic nanoparticles for on‐demand smart drug delivery applications. JOURNAL OF POLYMER SCIENCE 2023. [DOI: 10.1002/pol.20220747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Affiliation(s)
- Mohammad Ali Haghighat Bayan
- Department of Biosystems and Soft Matter Institute of Fundamental Technological Research, Polish Academy of Sciences Warsaw Poland
| | - Yasmin Juliane Dias
- Department of Mechanical and Industrial Engineering University of Illinois at Chicago Chicago Illinois USA
| | - Chiara Rinoldi
- Department of Biosystems and Soft Matter Institute of Fundamental Technological Research, Polish Academy of Sciences Warsaw Poland
| | - Paweł Nakielski
- Department of Biosystems and Soft Matter Institute of Fundamental Technological Research, Polish Academy of Sciences Warsaw Poland
| | - Daniel Rybak
- Department of Biosystems and Soft Matter Institute of Fundamental Technological Research, Polish Academy of Sciences Warsaw Poland
| | - Yen B. Truong
- Commonwealth Scientific and Industrial Research Organization (CSIRO) Manufacturing Clayton Victoria Australia
| | - Alexander L. Yarin
- Department of Mechanical and Industrial Engineering University of Illinois at Chicago Chicago Illinois USA
- School of Mechanical Engineering Korea University Seoul Republic of Korea
| | - Filippo Pierini
- Department of Biosystems and Soft Matter Institute of Fundamental Technological Research, Polish Academy of Sciences Warsaw Poland
- Commonwealth Scientific and Industrial Research Organization (CSIRO) Manufacturing Clayton Victoria Australia
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28
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Shafqat O, Rehman Z, Shah MM, Ali SHB, Jabeen Z, Rehman S. Synthesis, structural characterization and in vitro pharmacological properties of betanin-encapsulated chitosan nanoparticles. Chem Biol Interact 2023; 370:110291. [PMID: 36513144 DOI: 10.1016/j.cbi.2022.110291] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 11/21/2022] [Accepted: 11/28/2022] [Indexed: 12/14/2022]
Abstract
Betanin, a natural food color and the only betalain, is approved for use in pharmaceutical and food industries as natural antioxidative and preservative agent, respectively. However, the antioxidant power and health-promoting properties of betanin have been disregarded due to its low stability in physiological conditions. Therefore, this study is designed to synthesize and evaluate in vitro pharmacological characteristics of betanin-encapsulated chitosan nanoparticles (ChBetNPs). ChBetNPs were synthesized by ionic gelation method and characterized by DLS, UV, FTIR, SEM and zeta potential analysis. The encapsulation efficiency (EE) and in vitro release kinetics were analyzed using spectrophotometric technique for quantifying the encapsulated amount of betanin in ChBetNPs as a function of time. The antioxidant activity of ChBetNPs was analyzed by DPPH and H2O2 radical scavenging assays, anti-inflammatory activity by protein denaturation and human RBCs stabilization assays, and anti-acetylcholinesterase activity using standard protocol with minor modifications. Unloaded chitosan nanoparticles (CSNPs) were found to be sized at 161.4 ± 5.75 nm while an increase in the size to 270.3 ± 8.50 nm was noticed upon encapsulating betanin. EE of ChBetNPs was measured to be ∼87.5%. The IC50 of ChBetNPs depicted significant free radical scavenging activities as compared to CSNPs. Similarly, a strong anti-inflammatory activity of ChBetNPs was noted. Significant decrease in acetylcholinesterase activity by ChBetNPs was measured (IC50 0.5255 μg/mL vs. control 26.09 μg/mL). The vegetables coated with 3% ChBetNPs showed decreased weight loss as compared to uncoated control. ChBetNPs was shown to exhibit strong antioxidant, anti-inflammatory and anti-acetylcholinesterase activities thus making it a significant therapeutic agent for the management of Alzheimer's disease.
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Affiliation(s)
- Omayya Shafqat
- Department of Biosciences, COMSATS University Islamabad CUI, 45550, Pakistan
| | - Zartasha Rehman
- Department of Biosciences, COMSATS University Islamabad CUI, 45550, Pakistan
| | | | | | - Zahra Jabeen
- Department of Biosciences, COMSATS University Islamabad CUI, 45550, Pakistan
| | - Sidra Rehman
- Department of Biosciences, COMSATS University Islamabad CUI, 45550, Pakistan.
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29
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Machine learning models to accelerate the design of polymeric long-acting injectables. Nat Commun 2023; 14:35. [PMID: 36627280 PMCID: PMC9832011 DOI: 10.1038/s41467-022-35343-w] [Citation(s) in RCA: 27] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 11/28/2022] [Indexed: 01/11/2023] Open
Abstract
Long-acting injectables are considered one of the most promising therapeutic strategies for the treatment of chronic diseases as they can afford improved therapeutic efficacy, safety, and patient compliance. The use of polymer materials in such a drug formulation strategy can offer unparalleled diversity owing to the ability to synthesize materials with a wide range of properties. However, the interplay between multiple parameters, including the physicochemical properties of the drug and polymer, make it very difficult to intuitively predict the performance of these systems. This necessitates the development and characterization of a wide array of formulation candidates through extensive and time-consuming in vitro experimentation. Machine learning is enabling leap-step advances in a number of fields including drug discovery and materials science. The current study takes a critical step towards data-driven drug formulation development with an emphasis on long-acting injectables. Here we show that machine learning algorithms can be used to predict experimental drug release from these advanced drug delivery systems. We also demonstrate that these trained models can be used to guide the design of new long acting injectables. The implementation of the described data-driven approach has the potential to reduce the time and cost associated with drug formulation development.
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30
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Wongrakpanich A, Khunkitchai N, Achayawat Y, Suksiriworapong J. Ketorolac-Loaded PLGA-/PLA-Based Microparticles Stabilized by Hyaluronic Acid: Effects of Formulation Composition and Emulsification Technique on Particle Characteristics and Drug Release Behaviors. Polymers (Basel) 2023; 15:polym15020266. [PMID: 36679147 PMCID: PMC9863719 DOI: 10.3390/polym15020266] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 12/29/2022] [Accepted: 12/30/2022] [Indexed: 01/06/2023] Open
Abstract
This study aimed to develop ketorolac microparticles stabilized by hyaluronic acid based on poly(lactide-co-glycolide) (PLGA), poly(lactide) (PLA), and their blend for further application in osteoarthritis. The polymer blend may provide tailored drug release and improved physicochemical characteristics. The microparticles were prepared by water-in-oil-in-water (w/o/w) double emulsion solvent evaporation using two emulsification techniques, probe sonication (PS) and high-speed stirring (HSS), to obtain the microparticles in different size ranges. The results revealed that the polymer composition and emulsification technique influenced the ketorolac microparticle characteristics. The PS technique provided significantly at least 20 times smaller average size (1.3-2.2 µm) and broader size distribution (1.5-8.5) than HSS (45.5-67.4 µm and 1.0-1.4, respectively). The encapsulation efficiency was influenced by the polymer composition and the emulsification technique, especially in the PLA microparticles. The DSC and XRD results suggested that the drug was compatible with and molecularly dissolved in the polymer matrix. Furthermore, most of the drug molecules existed in an amorphous form, and some in any crystalline form. All of the microparticles had biphasic drug release composed of the burst release within the first 2 h and the sustained release over 35 days. The obtained microparticles showed promise for further use in the treatment of osteoarthritis.
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Affiliation(s)
| | - Nichakan Khunkitchai
- Doctor of Pharmacy Program, Faculty of Pharmacy, Mahidol University, Bangkok 10400, Thailand
| | - Yanisa Achayawat
- Doctor of Pharmacy Program, Faculty of Pharmacy, Mahidol University, Bangkok 10400, Thailand
| | - Jiraphong Suksiriworapong
- Department of Pharmacy, Faculty of Pharmacy, Mahidol University, Bangkok 10400, Thailand
- Correspondence:
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31
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Park H, Ha E, Kim J, Kim M. Injectable sustained‐release poly(lactic‐co‐glycolic acid) (PLGA) microspheres of exenatide prepared by supercritical fluid extraction of emulsion process based on a design of experiment approach. Bioeng Transl Med 2023; 8:e10485. [DOI: 10.1002/btm2.10485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 11/18/2022] [Accepted: 12/22/2022] [Indexed: 01/03/2023] Open
Affiliation(s)
- Heejun Park
- College of Pharmacy Duksung Women's University Seoul South Korea
| | - Eun‐Sol Ha
- College of Pharmacy Pusan National University Busan South Korea
| | - Jeong‐Soo Kim
- Dong‐A ST Research Institute Dong‐A ST Co. Ltd. Giheung‐gu Yongin‐si Gyeonggi South Korea
| | - Min‐Soo Kim
- College of Pharmacy Pusan National University Busan South Korea
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32
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Bassand C, Benabed L, Charlon S, Verin J, Freitag J, Siepmann F, Soulestin J, Siepmann J. 3D printed PLGA implants: APF DDM vs. FDM. J Control Release 2023; 353:864-874. [PMID: 36464064 DOI: 10.1016/j.jconrel.2022.11.052] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Revised: 11/21/2022] [Accepted: 11/29/2022] [Indexed: 12/23/2022]
Abstract
3D Printing offers a considerable potential for personalized medicines. This is especially true for customized biodegradable implants, matching the specific needs of each patient. Poly(lactic-co-glycolic acid) (PLGA) is frequently used as matrix former in biodegradable implants. However, yet relatively little is known on the technologies, which can be used for the 3D printing of PLGA implants. The aim of this study was to compare: (i) Arburg Plastic Freeforming Droplet Deposition Modeling (APF DDM), and (ii) Fused Deposition Modeling (FDM) to print mesh-shaped, ibuprofen-loaded PLGA implants. During APF DDM, individual drug-polymer droplets are deposited, fusing together to form filaments, which build up the implants. During FDM, continuous drug-polymer filaments are deposited to form the meshes. The implants were thoroughly characterized before and after exposure to phosphate buffer pH 7.4 using optical and scanning electron microscopy, GPC, DSC, drug release measurements and monitoring dynamic changes in the systems' dry & wet mass and pH of the bulk fluid. Interestingly, the mesh structures were significantly different, although the device design (composition & theoretical geometry) were the same. This could be explained by the fact that the deposition of individual droplets during APF DDM led to curved and rather thick filaments, resulting in a much lower mesh porosity. In contrast, FDM printing generated straight and thinner filaments: The open spaces between them were much larger and allowed convective mass transport during drug release. Consequently, most of the drug was already released after 4 d, when substantial PLGA set on. In the case of APF DDM printed implants, most of the drug was still entrapped at that time point and substantial polymer swelling transformed the meshes into more or less continuous PLGA gels. Hence, the diffusion pathways became much longer and ibuprofen release was controlled over 2 weeks.
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Affiliation(s)
- C Bassand
- Univ. Lille, Inserm, CHU Lille, U1008, F-59000 Lille, France
| | - L Benabed
- Univ. Lille, Inserm, CHU Lille, U1008, F-59000 Lille, France
| | - S Charlon
- IMT Lille Douai, École Nationale Supérieure Mines-Télécom Lille Douai, Materials & Processes Center, Cité Scientifique, Villeneuve d'Ascq Cedex, France
| | - J Verin
- Univ. Lille, Inserm, CHU Lille, U1008, F-59000 Lille, France
| | - J Freitag
- Univ. Lille, Inserm, CHU Lille, U1008, F-59000 Lille, France
| | - F Siepmann
- Univ. Lille, Inserm, CHU Lille, U1008, F-59000 Lille, France
| | - J Soulestin
- IMT Lille Douai, École Nationale Supérieure Mines-Télécom Lille Douai, Materials & Processes Center, Cité Scientifique, Villeneuve d'Ascq Cedex, France
| | - J Siepmann
- Univ. Lille, Inserm, CHU Lille, U1008, F-59000 Lille, France.
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Macrophage-evading and tumor-specific apoptosis inducing nanoparticles for targeted cancer therapy. Acta Pharm Sin B 2023; 13:327-343. [PMID: 36815044 PMCID: PMC9939305 DOI: 10.1016/j.apsb.2022.05.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 03/29/2022] [Accepted: 04/08/2022] [Indexed: 12/18/2022] Open
Abstract
Extended circulation of anticancer nanodrugs in blood stream is essential for their clinical applications. However, administered nanoparticles are rapidly sequestered and cleared by cells of the mononuclear phagocyte system (MPS). In this study, we developed a biomimetic nanosystem that is able to efficiently escape MPS and target tumor tissues. The fabricated nanoparticles (TM-CQ/NPs) were coated with fibroblast cell membrane expressing tumor necrosis factor (TNF)-related apoptosis inducing ligand (TRAIL). Coating with this functionalized membrane reduced the endocytosis of nanoparticles by macrophages, but increased the nanoparticle uptake in tumor cells. Importantly, this membrane coating specifically induced tumor cell apoptosis via the interaction of TRAIL and its cognate death receptors. Meanwhile, the encapsulated chloroquine (CQ) further suppressed the uptake of nanoparticles by macrophages, and synergized with TRAIL to induce tumor cell apoptosis. The vigorous antitumor efficacy in two mice tumor models confirmed our nanosystem was an effective approach to address the MPS challenge for cancer therapy. Together, our TM-CQ/NPs nanosystem provides a feasible approach to precisely target tumor tissues and improve anticancer efficacy.
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Bassand C, Benabed L, Freitag J, Verin J, Siepmann F, Siepmann J. How bulk fluid renewal can affect in vitro drug release from PLGA implants: Importance of the experimental set-up. Int J Pharm X 2022; 4:100131. [PMID: 36189458 PMCID: PMC9519472 DOI: 10.1016/j.ijpx.2022.100131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 08/30/2022] [Accepted: 09/16/2022] [Indexed: 11/08/2022] Open
Abstract
The aim of this study was to better understand the potential impact of partial vs. complete renewal of the bulk fluid during drug release measurements from poly (lactic-co-glycolic acid) (PLGA)-based implants. A “standard experimental set-up”, in which the implants were directly exposed to well agitated phosphate buffer pH 7.4 was used, as well as set-ups, in which the implants were embedded within agarose hydrogels (mimicking living tissue). The gels were exposed to well agitated phosphate buffer pH 7.4. Ibuprofen-loaded implants were prepared by hot melt extrusion. The systems were thoroughly characterized before and during drug release by optical and scanning electron microscopy, gravimetric analysis, pH and solubility measurements as well as gel permeation chromatography. The bulk fluid was either completely or partially replaced by fresh medium at each sampling time point. In all cases, sink conditions were provided in the agitated bulk fluids throughout the experiments. Interestingly, the agarose set-ups did not show any noteworthy impact of the bulk fluid sampling volume on the observed drug release patterns, whereas complete fluid renewal in the “standard set-up” led to accelerated drug release. This could be explained by the considerable fragility of the implants once substantial polymer swelling set on, transforming them into PLGA gels: Complete fluid renewal caused partial disintegration and damage of the highly swollen systems, decreasing the lengths of the diffusion pathways for the drug. The mechanical stress is very much reduced at low sampling volumes, or if the implants are embedded within agarose gels. Thus, great care must be taken when defining the conditions for in vitro drug release measurements from PLGA-based implants: Once substantial system swelling sets on, the devices become highly fragile.
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Shamszadeh S, Akrami M, Asgary S. Size-dependent bioactivity of electrosprayed core-shell chitosan-alginate particles for protein delivery. Sci Rep 2022; 12:20097. [PMID: 36418917 PMCID: PMC9684514 DOI: 10.1038/s41598-022-24389-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Accepted: 11/15/2022] [Indexed: 11/24/2022] Open
Abstract
Nano-bio interactions are size-dependent. The present study investigates whether core-shell chitosan-alginate particle size governs biological activities as well as protein release profile. A coaxial electrospraying was used to fabricate bovine serum albumin (BSA)-loaded core-shell micro/nanoparticles and were fully characterized. The bio/hemocompatibility of the particles was assessed using MTT and hemolytic assays, respectively, followed by the uptake assessment using flow cytometry. Finally, protein absorption was investigated using SDS-PAGE. The SEM size of the microparticles, the hydrodynamic, and the actual sizes of the nanoparticles were 1.2 μm, 90.49 nm, and 50 nm, respectively. Interactions among two polymers and BSA were observed using DSC analysis. BET analysis showed a more surface area for nanoparticles. A sustained release trend of BSA was observed after 14- and 10-day for microparticles and nanoparticles, respectively. Microparticles exhibited excellent hemocompatibility (< 5% hemolysis) and cell viability (at least > 70%) in all concentrations. However, acceptable hemolytic activity and cell viability were observed for nanoparticles in concentrations below 250 μg/mL. Furthermore, nanoparticles showed greater cellular uptake (~ 4 folds) and protein absorption (~ 1.61 folds) than microparticles. Overall, the developed core-shell chitosan-alginate particles in the micro/nanoscale can be promising candidates for biomedical application and regenerative medicine regarding their effects on above mentioned biological activities.
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Affiliation(s)
- Sayna Shamszadeh
- grid.411600.2Iranian Center for Endodontic Research, Research Institute of Dental Sciences, Shahid Beheshti University of Medical Sciences, Tehran, 1983963113 Iran
| | - Mohammad Akrami
- grid.411705.60000 0001 0166 0922Department of Pharmaceutical Biomaterials and Medical Biomaterials Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, 1417614411 Iran ,grid.411705.60000 0001 0166 0922Institute of Biomaterials, University of Tehran and Tehran University of Medical Sciences (IBUTUMS), Tehran, Iran
| | - Saeed Asgary
- grid.411600.2Iranian Center for Endodontic Research, Research Institute of Dental Sciences, Shahid Beheshti University of Medical Sciences, Tehran, 1983963113 Iran
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Isabel CZ, Luis AD, Samuel ES, Elizabeth PS, Dea HR, Sergio AA. “Novel mucoadhesive PLGA-PVM/MA micro-nanocomposites loaded with felodipine intended for pulmonary administration by nebulization”. Int J Pharm 2022; 628:122295. [DOI: 10.1016/j.ijpharm.2022.122295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 10/03/2022] [Accepted: 10/09/2022] [Indexed: 10/31/2022]
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Otte A, Turasan H, Park K. Implications of particle size on the respective solid-state properties of naltrexone in PLGA microparticles. Int J Pharm 2022; 626:122170. [PMID: 36070842 PMCID: PMC9529846 DOI: 10.1016/j.ijpharm.2022.122170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 08/15/2022] [Accepted: 08/30/2022] [Indexed: 11/19/2022]
Abstract
A thorough understanding of the complexities in formulating and manufacturing polymeric microspheres is required for new and generic drug applications. Specifically, for an ANDA application for polymeric microsphere-based products, the applicant must meet Q1 (qualitative) and Q2 (quantitative) sameness, and in some cases, Q3 (e.g., microstructural) sameness. Herein, we report the naltrexone crystallinity in a PLGA microparticle system prepared from a dichloromethane-benzyl alcohol solvent system results in a crystallinity dependence as a function of microparticle size from the same batch - illustrating intrabatch microstructural variability. As the particle size increases, the crystallinity increases, with additional polymorphic forms more readily noted at the large particle sizes. Furthermore, during dissolution, a polymorphic transition and/or crystallization occurs at larger size fractions. This study highlights the importance of controlling the manufacturing parameters during microparticle formation, specifically solvent extraction and particle size control. Furthermore, with the approval of generic microparticles formulations on the horizon, this study highlights the importance of Q3, the same components in the same concentration with the same arrangement of matter, whereby microparticles can have varying microstructural properties across particle sizes from the same batch.
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Affiliation(s)
- Andrew Otte
- Purdue University, Weldon School of Biomedical Engineering, West Lafayette, IN 47907, USA.
| | - Hazal Turasan
- Purdue University, Weldon School of Biomedical Engineering, West Lafayette, IN 47907, USA
| | - Kinam Park
- Purdue University, Weldon School of Biomedical Engineering, West Lafayette, IN 47907, USA; Purdue University, College of Pharmacy, West Lafayette, IN 47907, USA; Akina, Inc., West Lafayette, IN 47906, USA
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38
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Baldino L, Reverchon E. Continuous supercritical CO2 assisted process for the production of nano-niosomes loaded with a second-generation antibiotic for ocular therapy. J Supercrit Fluids 2022. [DOI: 10.1016/j.supflu.2022.105673] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Owen MJ, Celik U, Chaudhary SK, Yik JHN, Patton JS, Kuo MC, Haudenschild DR, Liu GY. Production of Inhalable Ultra-Small Particles for Delivery of Anti-Inflammation Medicine via a Table-Top Microdevice. MICROMACHINES 2022; 13:1382. [PMID: 36144005 PMCID: PMC9501338 DOI: 10.3390/mi13091382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 07/01/2022] [Accepted: 07/04/2022] [Indexed: 06/16/2023]
Abstract
A table-top microdevice was introduced in this work to produce ultrasmall particles for drug delivery via inhalation. The design and operation are similar to that of spray-drying equipment used in industry, but the device itself is much smaller and more portable in size, simpler to operate and more economical. More importantly, the device enables more accurate control over particle size. Using Flavopiridol, an anti-inflammation medication, formulations have been developed to produce inhalable particles for pulmonary delivery. A solution containing the desired components forms droplets by passing through an array of micro-apertures that vibrate via a piezo-electrical driver. High-purity nitrogen gas was introduced and flew through the designed path, which included the funnel collection and cyclone chamber, and finally was pumped away. The gas carried and dried the micronized liquid droplets along the pathway, leading to the precipitation of dry solid microparticles. The formation of the cyclone was essential to assure the sufficient travel path length of the liquid droplets to allow drying. Synthesis parameters were optimized to produce microparticles, whose morphology, size, physio-chemical properties, and release profiles met the criteria for inhalation. Bioactivity assays have revealed a high degree of anti-inflammation. The above-mentioned approach enabled the production of inhalable particles in research laboratories in general, using the simple table-top microdevice. The microparticles enable the inhalable delivery of anti-inflammation medicine to the lungs, thus providing treatment for diseases such as pulmonary fibrosis and COVID-19.
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Affiliation(s)
- Matthew J. Owen
- Department of Chemistry, University of California, Davis, CA 95616, USA
| | - Umit Celik
- Department of Chemistry, University of California, Davis, CA 95616, USA
| | | | - Jasper H. N. Yik
- Tesio Pharmaceuticals, Inc., Davis, CA 95616, USA
- Department of Orthopedic Surgery, School of Medicine, University of California Davis, Sacramento, CA 95817, USA
| | | | | | - Dominik R. Haudenschild
- Department of Orthopedic Surgery, School of Medicine, University of California Davis, Sacramento, CA 95817, USA
| | - Gang-yu Liu
- Department of Chemistry, University of California, Davis, CA 95616, USA
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40
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Li J, Tang R, Zhang P, Yuan M, Li H, Yuan M. The Preparation and Characterization of Chitooligosaccharide–Polylactide Polymers, and In Vitro Release of Microspheres Loaded with Vancomycin. J Funct Biomater 2022; 13:jfb13030113. [PMID: 35997451 PMCID: PMC9397111 DOI: 10.3390/jfb13030113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 07/27/2022] [Accepted: 08/01/2022] [Indexed: 12/10/2022] Open
Abstract
Drug-loaded microspheres are an ideal bone tissue delivery material. In this study, a biodegradable Schiff base chitosan–polylactide was used as the encapsulation material to prepare drug-loaded microspheres as biocompatible carriers for controlled vancomycin release. In this regard, Schiff base chitosan was prepared by the Schiff base method, and then different proportions of the Schiff base chitosan–polylactide polymer were prepared by ring-opening polymerization. Drug-loaded microspheres were prepared by the W/O emulsion method, and the polymers and polymer microspheres were characterized and studied by NMR, IR, and antibacterial methods. The drug loading and release rates of microspheres were determined to investigate the drug loading, encapsulation efficiency, and release rate of drug microspheres at different ratios. In this study, different proportions of Schiff base chitosan–polylactic acid materials are successfully prepared, and vancomycin-loaded microspheres are successfully prepared using them as carriers. This study proves that the materials have antibacterial activities against Staphylococcus aureus and Escherichia coli. The particle size of drug-loaded microspheres was below 10 μm, and the particle size decreased with decreasing molecular weight. The obtained results show that 1:100 microspheres have the highest drug-loading and encapsulation efficiencies, the drug-loaded microspheres have no burst release within 24 h, and the release quantity reaches more than 20%. After 30 days of release, the release amounts of 1:10, 1:20, 1:40, 1:60, and 1:100 drug-loaded microspheres were 64.80 ± 0.29%, 54.43 ± 0.54%, 44.60 ± 0.43%, 42.53 ± 0.40% and 69.73 ± 0.45%, respectively, and the release amount of 1:100 was the highest.
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Sarmadi M, Ta C, VanLonkhuyzen AM, De Fiesta DC, Kanelli M, Sadeghi I, Behrens AM, Ingalls B, Menon N, Daristotle JL, Yu J, Langer R, Jaklenec A. Experimental and computational understanding of pulsatile release mechanism from biodegradable core-shell microparticles. SCIENCE ADVANCES 2022; 8:eabn5315. [PMID: 35857507 PMCID: PMC9278852 DOI: 10.1126/sciadv.abn5315] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 05/28/2022] [Indexed: 05/11/2023]
Abstract
Next-generation therapeutics require advanced drug delivery platforms with precise control over morphology and release kinetics. A recently developed microfabrication technique enables fabrication of a new class of injectable microparticles with a hollow core-shell structure that displays pulsatile release kinetics, providing such capabilities. Here, we study this technology and the resulting core-shell microstructures. We demonstrated that pulsatile release is governed by a sudden increase in porosity of the polymeric matrix, leading to the formation of a porous path connecting the core to the environment. Moreover, the release kinetics within the range studied remained primarily independent of the particle geometry but highly dependent on its composition. A qualitative technique was developed to study the pattern of pH evolution in the particles. A computational model successfully modeled deformations, indicating sudden expansion of the particle before onset of release. Results of this study contribute to the understanding and design of advanced drug delivery systems.
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Affiliation(s)
- Morteza Sarmadi
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Harvard-MIT Division of Health Sciences and Technology, Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Christina Ta
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Abigail M. VanLonkhuyzen
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Dominique C. De Fiesta
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Maria Kanelli
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Ilin Sadeghi
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Adam M. Behrens
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Bailey Ingalls
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Harvard-MIT Division of Health Sciences and Technology, Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Nandita Menon
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - John L. Daristotle
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Julie Yu
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Robert Langer
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Harvard-MIT Division of Health Sciences and Technology, Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Ana Jaklenec
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
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Yang B, Gomes Dos Santos A, Puri S, Bak A, Zhou L. The industrial design, translation, and development strategies for long-acting peptide delivery. Expert Opin Drug Deliv 2022; 19:1233-1245. [PMID: 35787229 DOI: 10.1080/17425247.2022.2098276] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION Peptides are widely recognized as therapeutic agents in the treatment of a wide range of diseases, such as cancer, diabetes etc. However, their use has been limited by their short half-life, due to significant metabolism by exo- and endo-peptidases as well as their inherent poor physical and chemical stability. Research with the aim of improving their half-life in the body, and thus improving patient compliance (by decreasing the frequency of injections) has gained significant attention. AREAS COVERED This review outlines the current landscape and industrial approaches to achieve extended peptide exposure and reduce dosing frequency. Emphasis is placed on identifying challenges in drug product manufacturing and desirable critical quality attributes that are essential for activity and safety, providing insights into chemistry and design aspects impacting peptide release, and summarizing important considerations for CMC developability assessments of sustained release peptide drugs. EXPERT OPINION Bring the patient and disease perspective early into development. Substantial advances have been made in the field of sustained delivery of peptides despite their complexity. The article will also highlight considerations for early-stage product design and development, providing an industrial perspective on risk mitigation in developing sustained release peptide drug products.
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Affiliation(s)
- Bin Yang
- Advanced Drug Delivery, Pharmaceutical Sciences, R&D, AstraZeneca, Cambridge, UK
| | - Ana Gomes Dos Santos
- Advanced Drug Delivery, Pharmaceutical Sciences, R&D, AstraZeneca, Cambridge, UK
| | - Sanyogitta Puri
- Advanced Drug Delivery, Pharmaceutical Sciences, R&D, AstraZeneca, Cambridge, UK
| | - Annette Bak
- Advanced Drug Delivery, Pharmaceutical Sciences, R&D, AstraZeneca, Boston, USA
| | - Liping Zhou
- Advanced Drug Delivery, Pharmaceutical Sciences, R&D, AstraZeneca, Boston, USA
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Thananukul K, Kaewsaneha C, Opaprakasit P, Zine N, Elaissari A. Biodegradable porous micro/nanoparticles with thermoresponsive gatekeepers for effective loading and precise delivery of active compounds at the body temperature. Sci Rep 2022; 12:10906. [PMID: 35764674 PMCID: PMC9240026 DOI: 10.1038/s41598-022-15069-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Accepted: 06/17/2022] [Indexed: 11/27/2022] Open
Abstract
Stimuli-responsive controlled delivery systems are of interest for preventing premature leakages and ensuring precise releases of active compounds at target sites. In this study, porous biodegradable micro/nanoparticles embedded with thermoresponsive gatekeepers are designed and developed based on Eudragit RS100 (PNIPAM@RS100) and poly(N-isopropylacrylamide) via a double emulsion solvent evaporation technique. The effect of initiator types on the polymerization of NIPAM monomer/methylene-bis-acrylamide (MBA) crosslinker was investigated at 60 °C for thermal initiators and ambient temperature for redox initiators. The crosslinked PNIPAM plays a key role as thermal-triggered gatekeepers with high loading efficiency and precise release of a model active compound, Nile Blue A (NB). Below the volume phase transition temperature (TVPT), the gatekeepers possess a swollen conformation to block the pores and store NB within the cavities. Above its TVPT, the chains rearrange, allowing gate opening and a rapid and constant release rate of the compound until completion. A precise “on–off” switchable release efficiency of PNIPAM@RS100 was demonstrated by changing the temperatures to 4 and 40 °C. The materials are a promising candidate for controlled drug delivery systems with a precise and easy triggering mechanism at the body temperature for effective treatments.
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Affiliation(s)
- Kamonchanok Thananukul
- School of Bio-Chemical Engineering and Technology, Sirindhorn International Institute of Technology (SIIT), Thammasat University, Pathum Thani, 12121, Thailand.,Univ Lyon, University Claude Bernard Lyon-1, CNRS, ISA-UMR 5280, 69622, Villeurbanne, France
| | - Chariya Kaewsaneha
- School of Bio-Chemical Engineering and Technology, Sirindhorn International Institute of Technology (SIIT), Thammasat University, Pathum Thani, 12121, Thailand
| | - Pakorn Opaprakasit
- School of Bio-Chemical Engineering and Technology, Sirindhorn International Institute of Technology (SIIT), Thammasat University, Pathum Thani, 12121, Thailand.
| | - Nadia Zine
- Univ Lyon, University Claude Bernard Lyon-1, CNRS, ISA-UMR 5280, 69622, Villeurbanne, France
| | - Abdelhamid Elaissari
- Univ Lyon, University Claude Bernard Lyon-1, CNRS, ISA-UMR 5280, 69622, Villeurbanne, France.
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Otte A, Park K. Transitioning from a lab-scale PLGA microparticle formulation to pilot-scale manufacturing. J Control Release 2022; 348:841-848. [PMID: 35752252 PMCID: PMC9450845 DOI: 10.1016/j.jconrel.2022.06.036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 06/13/2022] [Accepted: 06/20/2022] [Indexed: 11/25/2022]
Abstract
The complexity of scale-up manufacturing of PLGA microparticles creates a significant challenge when transitioning from benchtop-scale formulation development into larger clinical scale batches. Minor changes in the initial formulation composition (e.g., PLGA molecular weight, solvent type, and drug concentration) and processing parameters (e.g., extraction kinetics and drying condition) during scale-up production can result in significantly different performance of the prepared microparticles. The objectives of the present study were to highlight the in vitro and in vivo performance of a candidate benchtop-scale batch created with a rotor-stator mixer, transitioned into an in-line manufacturing process at ~15× scale of a long-acting naltrexone formulation. Physicochemical properties (such as drug loading, residual benzyl alcohol content, and morphology) as well as the in vitro release characteristics of the prepared naltrexone microparticles between the benchtop-scale and in-line process pilot-scale were determined. The pharmacokinetics of the naltrexone microspheres were investigated using the rat model. The results demonstrate that while the morphologies of the particles were different from a visual assessment and slight differences were observed in the in vitro release profiles, the in vivo pharmacokinetics illustrate similar kinetics. Our study shows that scale-up production having the same drug release kinetics can be made by controlling the formulation and processing parameters.
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Affiliation(s)
- Andrew Otte
- Purdue University, Departments of Biomedical Engineering and Pharmaceutics, West Lafayette, IN 47907, USA
| | - Kinam Park
- Purdue University, Departments of Biomedical Engineering and Pharmaceutics, West Lafayette, IN 47907, USA.
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45
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Siefen T, Bjerregaard S, Borglin C, Lamprecht A. Assessment of joint pharmacokinetics and consequences for the intraarticular delivery of biologics. J Control Release 2022; 348:745-759. [PMID: 35714731 DOI: 10.1016/j.jconrel.2022.06.015] [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: 04/05/2022] [Revised: 06/08/2022] [Accepted: 06/09/2022] [Indexed: 01/15/2023]
Abstract
Intraarticular (IA) injections provide the opportunity to deliver biologics directly to their site of action for a local and efficient treatment of osteoarthritis. However, the synovial joint is a challenging site of administration since the drug is rapidly eliminated across the synovial membrane and has limited distribution into cartilage, resulting in unsatisfactory therapeutic efficacy. In order to rationally develop appropriate drug delivery systems, it is essential to thoroughly understand the unique biopharmaceutical environments and kinetics in the joint to adequately simulate them in relevant experimental models. This review presents a detailed view on articular kinetics and drug-tissue interplay of IA administered drugs and summarizes how these can be translated into reasonable formulation strategies by identification of key factors through which the joint residence time can be prolonged and specific structures can be targeted. In this way, pros and cons of the delivery approaches for biologics will be evaluated and the extent to which biorelevant models are applicable to gain mechanistic insights and ameliorate formulation design is discussed.
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Affiliation(s)
- Tobias Siefen
- Department of Pharmaceutics, Institute of Pharmacy, University of Bonn, Bonn, Germany
| | | | | | - Alf Lamprecht
- Department of Pharmaceutics, Institute of Pharmacy, University of Bonn, Bonn, Germany; PEPITE (EA4267), University of Burgundy/Franche-Comté, Besançon, France.
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46
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VanBenschoten H, Yao S, Jensen JT, Woodrow KA. Drug Eluting Embolization Particles for Permanent Contraception. ACS Biomater Sci Eng 2022; 8:2995-3009. [PMID: 35749682 PMCID: PMC9277594 DOI: 10.1021/acsbiomaterials.2c00357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
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Medical technology
that blocks the fallopian tubes nonsurgically
could increase access to permanent contraception and address current
unmet needs in family planning. To achieve total occlusion of the
fallopian tube via scar tissue formation, acute trauma to the tubal
epithelium must first occur followed by a sustained and ultimately
fibrotic inflammatory response. Here, we developed drug-eluting fiber-based
microparticles that provide tunable dose and release of potent sclerosing
agents. This fabrication strategy demonstrates high encapsulation
of physicochemically diverse agents and the potential for scalable
manufacturing by utilizing free-surface electrospinning to generate
material for fiber micronization. Manipulation of nanofiber formulation
such as drug loading, drug hydrophobicity, polymer hydrophobicity,
and crystallinity allowed for modulation of the sustained release
properties of our fiber microparticles. We assessed various fibrous
microparticle formulations in vivo using a newly
developed and validated guinea pig model for contraception. We found
that fiber microparticles with bolus release doxycycline effectively
elicited acute trauma and those formulated with highly loaded phenyl
benzoate caused sustained inflammation in the target organs. The demonstrated
potency of these electrospun microparticles, as well as their embolic
size and shape, suggests potential for proximal agglomeration and
inflammatory activity in the fallopian tubes following transcervical
delivery.
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Affiliation(s)
- Hannah VanBenschoten
- Department of Bioengineering, University of Washington, 3720 15th Avenue Northeast, Seattle, Washington 98105, United States
| | - Shan Yao
- Oregon National Primate Research Center, Oregon Health & Science University, 505 Northwest 185th Avenue, Beaverton, Oregon 97006, United States
| | - Jeffrey T Jensen
- Oregon National Primate Research Center, Oregon Health & Science University, 505 Northwest 185th Avenue, Beaverton, Oregon 97006, United States
| | - Kim A Woodrow
- Department of Bioengineering, University of Washington, 3720 15th Avenue Northeast, Seattle, Washington 98105, United States
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Bassand C, Freitag J, Benabed L, Verin J, Siepmann F, Siepmann J. PLGA implants for controlled drug release: Impact of the diameter. Eur J Pharm Biopharm 2022; 177:50-60. [PMID: 35659920 DOI: 10.1016/j.ejpb.2022.05.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 05/24/2022] [Accepted: 05/27/2022] [Indexed: 11/17/2022]
Abstract
The aim of this study was to better understand the importance of the diameter of poly(lactic-co-glycolic acid) (PLGA)-based implants on system performance, in particular the control of drug release. Different types of ibuprofen-loaded implants were prepared by hot melt extrusion using a Leistritz Nano 16 twin-screw extruder. Drug release was measured in well agitated phosphate buffer pH7.4 bulk fluid and in agarose gels in Eppendorf tubes or transwell plates. Dynamic changes in the implants' dry & wet mass, volume, polymer molecular weight as well as inner & outer morphology were monitored using gravimetric analysis, optical macroscopy, gel permeation chromatography and scanning electron microscopy. The physical states of the drug and polymer were determined by DSC. Also pH changes in the release medium were investigated. Irrespective of the type of experimental set-up, the resulting absolute and relative drug release rates decreased with increasing implant diameter (0.7 to 2.8 mm). Bi-phasic drug release was observed in all cases from the monolithic solutions (ibuprofen was dissolved in the polymer): A zero order release phase was followed by a final, rapid drug release phase (accounting for 80-90% of the total drug dose). The decrease in the relative drug release rate with increasing system diameter can be explained by the increase in the diffusion pathway lengths to be overcome. Interestingly, also the onset of the final rapid drug release phase was delayed with increasing implant diameter. This can probably be attributed to the higher mechanical stability of thicker devices, offering more resistance to substantial entire system swelling.
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Affiliation(s)
- C Bassand
- Univ. Lille, Inserm, CHU Lille, U1008, F-59000 Lille, France
| | - J Freitag
- Univ. Lille, Inserm, CHU Lille, U1008, F-59000 Lille, France
| | - L Benabed
- Univ. Lille, Inserm, CHU Lille, U1008, F-59000 Lille, France
| | - J Verin
- Univ. Lille, Inserm, CHU Lille, U1008, F-59000 Lille, France
| | - F Siepmann
- Univ. Lille, Inserm, CHU Lille, U1008, F-59000 Lille, France
| | - J Siepmann
- Univ. Lille, Inserm, CHU Lille, U1008, F-59000 Lille, France.
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48
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Optimization of Rifampicin Encapsulation in PLGA Polymeric Reservoirs. Int J Pharm 2022; 622:121844. [DOI: 10.1016/j.ijpharm.2022.121844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 05/14/2022] [Accepted: 05/17/2022] [Indexed: 11/19/2022]
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49
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Sharifi F, Otte A, Park K. Initial Formation of the Skin Layer of PLGA Microparticles. Adv Healthc Mater 2022; 11:e2101427. [PMID: 34601826 DOI: 10.1002/adhm.202101427] [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: 07/16/2021] [Revised: 09/13/2021] [Indexed: 11/10/2022]
Abstract
Poly(lactide-co-glycolide) (PLGA) has been extensively used in making long-acting injectable formulations. The critical factors affecting the PLGA formulation properties have been adjusted to control the drug release kinetics and obtain desirable properties of PLGA-based drug delivery systems. The PLGA microparticle formation begins as soon as the drug/PLGA-dissolved in the organic solvent phase (oil phase) is exposed to the water phase. The initial skin (or shell) formation on the oil droplets occurs very quickly, sometimes in the matter of milliseconds, and studying the process has been difficult. The skin formation on the PLGA emulsion droplet surface that can affect the subsequent hardening steps is examined. PLGA droplets with different compositions are prepared. Using collimated light and a high-speed camera made it possible to detect the diffusion of acetonitrile from the oil phase into the water phase during the oil droplet formation. Although the skin formation is not visible on the surface of the oil phase droplet with the current setup, the droplet shapes, solid strand formation, and the difference in the spreading time suggest that the initial contact time between the oil and water phases in the range of a few seconds is critical to the properties of the skin.
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Affiliation(s)
- Farrokh Sharifi
- Weldon School of Biomedical Engineering 206 South Martin Jischke Drive West Lafayette IN 47907 USA
| | - Andrew Otte
- Weldon School of Biomedical Engineering 206 South Martin Jischke Drive West Lafayette IN 47907 USA
| | - Kinam Park
- Weldon School of Biomedical Engineering 206 South Martin Jischke Drive West Lafayette IN 47907 USA
- Departments of Biomedical Engineering and Pharmaceutics 206 South Martin Jischke Drive West Lafayette IN 47907 USA
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Wang X, Ansari A, Pierre V, Young K, Kothapalli CR, von Recum HA, Senyo SE. Injectable Extracellular Matrix Microparticles Promote Heart Regeneration in Mice with Post-ischemic Heart Injury. Adv Healthc Mater 2022; 11:e2102265. [PMID: 35118812 PMCID: PMC9035118 DOI: 10.1002/adhm.202102265] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 12/28/2021] [Indexed: 12/20/2022]
Abstract
Ischemic heart injury causes permanent cardiomyocyte loss and fibrosis impairing cardiac function. Tissue derived biomaterials have shown promise as an injectable treatment for the post-ischemic heart. Specifically, decellularized extracellular matrix (dECM) is a protein rich suspension that forms a therapeutic hydrogel once injected and improves the heart post-injury response in rodents and pig models. Current dECM-derived biomaterials are delivered to the heart as a liquid dECM hydrogel precursor or colloidal suspension, which gels over several minutes. To increase the functionality of the dECM therapy, an injectable solid dECM microparticle formulation derived from heart tissue to control sizing and extend stability in aqueous conditions is developed. When delivered into the infarcted mouse heart, these dECM microparticles protect cardiac function promote vessel density and reduce left ventricular remodeling by sustained delivery of biomolecules. Longer retention, higher stiffness, and slower protein release of dECM microparticles are noted compared to liquid dECM hydrogel precursor. In addition, the dECM microparticle can be developed as a platform for macromolecule delivery. Together, the results suggest that dECM microparticles can be developed as a modular therapy for heart injury.
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Affiliation(s)
- Xinming Wang
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Ali Ansari
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Valinteshley Pierre
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Kathleen Young
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Chandrasekhar R. Kothapalli
- Department of Chemical and Biomedical Engineering, Cleveland State University, Cleveland, Ohio 44115, United States
| | - Horst A. von Recum
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Samuel E. Senyo
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
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