1
|
Malik MK, Kumar V, Kumarasamy V, Singh OP, Kumar M, Dixit R, Subramaniyan V, Singh J. Film Coating of Phosphorylated Mandua Starch on Matrix Tablets for pH-Sensitive Release of Mesalamine. Molecules 2024; 29:3208. [PMID: 38999160 PMCID: PMC11243319 DOI: 10.3390/molecules29133208] [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: 10/28/2023] [Revised: 12/04/2023] [Accepted: 12/12/2023] [Indexed: 07/14/2024] Open
Abstract
Chemically modified mandua starch was successfully synthesized and applied to coat mesalamine-loaded matrix tablets. The coating material was an aqueous dispersion of mandua starch modified by sodium trimetaphosphate and sodium tripolyphosphate. To investigate the colon-targeting release competence, chemically modified mandua starch film-coated mesalamine tablets were produced using the wet granulation method followed by dip coating. The effect of the coating on the colon-targeted release of the resultant delivery system was inspected in healthy human volunteers and rabbits using roentgenography. The results show that drug release was controlled when the coating level was 10% w/w. The release percentage in the upper gastric phase (pH 1.2, simulated gastric fluid) was less than 6% and reached up to 59.51% w/w after 14 h in simulated colonic fluid. In addition to in vivo roentgenographic studies in healthy rabbits, human volunteer studies proved the colon targeting efficiency of the formulation. These results clearly demonstrated that chemically modified mandua starch has high effectiveness as a novel aqueous coating material for controlled release or colon targeting.
Collapse
Affiliation(s)
- Mayank Kumar Malik
- Department of Chemistry, Gurukula Kangri (Deemed to be University), Haridwar 249407, India; (M.K.M.); (J.S.)
| | - Vipin Kumar
- Department of Pharmaceutical Sciences, Gurukula Kangri (Deemed to be University), Haridwar 249407, India;
| | - Vinoth Kumarasamy
- Department of Parasitology and Medical Entomology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, Cheras, Kuala Lumpur 56000, Malaysia
| | - Om Prakash Singh
- Department of Kaya Chikitsa, Rishikul Campus, Haridwar, Uttarakhand Ayurved University, Dehradun 248001, India;
| | - Mukesh Kumar
- Department of Botany and Microbiology, Gurukula Kangri (Deemed to be University), Haridwar 249407, India;
| | - Raghav Dixit
- Department of Pharmaceutical Sciences, Gurukula Kangri (Deemed to be University), Haridwar 249407, India;
| | - Vetriselvan Subramaniyan
- Pharmacology Unit, Jeffrey Cheah School of Medicine and Health Sciences, Monash University, Jalan Lagoon Selatan, Bandar Sunway, Selangor Darul Ehsan 47500, Malaysia
- School of Bioengineering and Biosciences, Lovely Professional University, Phagwara 144001, India
| | - Jaspal Singh
- Department of Chemistry, Gurukula Kangri (Deemed to be University), Haridwar 249407, India; (M.K.M.); (J.S.)
| |
Collapse
|
2
|
Kjeldsen RB, Ghavami M, Thamdrup LH, Boisen A. Magnetic and/or Radiopaque Functionalization of Self-Unfolding Foils for Improved Applicability within Oral Drug Delivery. ACS Biomater Sci Eng 2023; 9:6773-6782. [PMID: 37989264 PMCID: PMC10716816 DOI: 10.1021/acsbiomaterials.3c01038] [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: 07/28/2023] [Revised: 10/16/2023] [Accepted: 10/31/2023] [Indexed: 11/23/2023]
Abstract
Various types of microfabricated devices have been proposed for overcoming the gastrointestinal (GI) challenges associated with oral administration of pharmaceutical compounds. However, unidirectional drug release in very close forced proximity to the intestinal wall still appears to be an unresolved issue for many of these microdevices, which typically show low drug absorption and thereby low bioavailabilities. This work explores how recently developed and promising self-unfolding foils (SUFs) can be magnetically and/or radiopaquely (M/R-) functionalized, by the addition of BaSO4 or Fe3O4 nanoparticles, for improving their applicability within oral drug delivery. Through surface characterization, mechanical testing, and X-ray imaging, the (M/R-)SUFs are generally inspected and their overall properties compared. Furthermore, R-SUFs are being used in an in vivo rat X-ray imaging study, whereas in situ rat testing of MR-SUFs are attempted together with an investigation of their general magnetic properties. Unfolding of the R-SUF, and its very close forced proximity to the small intestine, is very easily observed 2 h post-administration by applying both computed tomography scanning and planar X-ray imaging. In addition, MR-SUFs show a great magnetic response in water, which suggests the possibility for controlled motion and retention in the GI tract. However, the magnetic response does not seem strong enough for in situ rat testing, but most likely a strong magnetization of the MR-SUFs using for example an impulse magnetizer can be made for increasing the magnetic response. All of the results presented herein are highly relevant and applicable for future usage of (M/R-)SUFs, as well as similar devices, in pre-clinical studies and potential clinical trials.
Collapse
Affiliation(s)
- Rolf Bech Kjeldsen
- The Danish National Research
Foundation and Villum Foundation’s Center for Intelligent Drug
Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN),
Department of Health Technology, Technical
University of Denmark, 2800 Kgs. Lyngby, Denmark
| | - Mahdi Ghavami
- The Danish National Research
Foundation and Villum Foundation’s Center for Intelligent Drug
Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN),
Department of Health Technology, Technical
University of Denmark, 2800 Kgs. Lyngby, Denmark
| | - Lasse Højlund
Eklund Thamdrup
- The Danish National Research
Foundation and Villum Foundation’s Center for Intelligent Drug
Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN),
Department of Health Technology, Technical
University of Denmark, 2800 Kgs. Lyngby, Denmark
| | - Anja Boisen
- The Danish National Research
Foundation and Villum Foundation’s Center for Intelligent Drug
Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN),
Department of Health Technology, Technical
University of Denmark, 2800 Kgs. Lyngby, Denmark
| |
Collapse
|
3
|
Che X, Yang C, Pan L, Gu D, Dai G, Shu J, Yang L. Achieving safe and high-performance gastrointestinal tract spectral CT imaging with small-molecule lanthanide complex. Biomater Res 2023; 27:119. [PMID: 37990349 PMCID: PMC10664581 DOI: 10.1186/s40824-023-00463-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Accepted: 11/13/2023] [Indexed: 11/23/2023] Open
Abstract
BACKGROUND Non-intrusive imaging of gastrointestinal (GI) tract using computed tomography (CT) contrast agents is of the most significant issues in the diagnosis and treatment of GI diseases. Moreover, spectral CT, which can generate monochromatic images to display the X-ray attenuation characteristics of contrast agents, provides a better imaging sensitivity for diagnose inflammatory bowel disease (IBD) than convention CT imaging. METHODS Herein, a convenient and one-pot synthesis method is provided for the fabrication of small-molecule lanthanide complex Holmium-tetraazacyclododecane-1, 4, 7, 10-tetraacetic acid (Ho-DOTA) as a biosafe and high-performance spectral CT contrast agent for GI imaging with IBD. In vivo CT imaging was administered with both healthy mice and colitis mice induced by dextran sodium sulfate. RESULTS We found that Ho-DOTA accumulated in inflammation sites of large intestines and produced high CT contrast compared with healthy mice. Both in vitro and in vivo experimental results also showed that Ho-DOTA provided much more diagnostic sensitivity and accuracy due to the excellent X-ray attenuation characteristics of Ho-DOTA compared with clinical iodinate agent. Furthermore, the proposed contrast media could be timely excreted from the body via the urinary and digestive system, keeping away from the potential side effects due to long-term retention in vivo. CONCLUSION Accordingly, Ho-DOTA with excellent biocompatibility can be useful as a potential high-performance spectral CT contrast agent for further clinical imaging of gastrointestinal tract and diagnosis of intestinal system diseases.
Collapse
Affiliation(s)
- Xiaoling Che
- Department of Radiology, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, People's Republic of China
| | - Chunmei Yang
- Department of Radiology, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, People's Republic of China
| | - Liping Pan
- Department of Radiology, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, People's Republic of China
| | - Didi Gu
- Department of Radiology, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, People's Republic of China
| | - Guidong Dai
- Department of Radiology, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, People's Republic of China
| | - Jian Shu
- Department of Radiology, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, People's Republic of China.
| | - Lu Yang
- Department of Radiology, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, People's Republic of China.
| |
Collapse
|
4
|
Wang Y, Li Z, Bao Y, Cui H, Li J, Song B, Wang M, Li H, Cui X, Chen Y, Chen W, Yang S, Yang Y, Jin Z, Si X, Li B. Colon-targeted delivery of polyphenols: construction principles, targeting mechanisms and evaluation methods. Crit Rev Food Sci Nutr 2023:1-23. [PMID: 37823723 DOI: 10.1080/10408398.2023.2266842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/13/2023]
Abstract
Polyphenols have received considerable attention for their promotive effects on colonic health. However, polyphenols are mostly sensitive to harsh gastrointestinal environments, thus, must be protected. It is necessary to design and develop a colon-targeted delivery system to improve the stability, colon-targeting and bioavailability of polyphenols. This paper mainly introduces research on colon-targeted controlled release of polyphenols. The physiological features affecting the dissolution, release and absorption of polyphenol-loaded delivery systems in the colon are first discussed. Simultaneously, the types of colon-targeted carriers with different release mechanisms are described, and colon-targeting assessment models that have been studied so far and their advantages and limitations are summarized. Based on the current research on polyphenols colon-targeting, outlook and reflections are proposed, with the goal of inspiring strategic development of new colon-targeted therapeutics to ensure that the polyphenols reach the colon with complete bioactivity.
Collapse
Affiliation(s)
- Yidi Wang
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning, China
| | - Zhiying Li
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning, China
| | - Yiwen Bao
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning, China
| | - Huijun Cui
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning, China
| | - Jiaxin Li
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning, China
| | - Baoge Song
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning, China
| | - Mengzhu Wang
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning, China
| | - Haikun Li
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning, China
| | - Xingyue Cui
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning, China
| | - Yi Chen
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi, China
| | - Wei Chen
- Faculty of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, China
| | - Shufang Yang
- Zhejiang Lanmei Technology Co., Ltd, Zhu-ji City, Zhejiang Province, China
| | - Yiyun Yang
- Zhejiang Lanmei Technology Co., Ltd, Zhu-ji City, Zhejiang Province, China
| | - Zhufeng Jin
- Zhejiang Lanmei Technology Co., Ltd, Zhu-ji City, Zhejiang Province, China
| | - Xu Si
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning, China
| | - Bin Li
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning, China
| |
Collapse
|
5
|
Ghavami M, Pedersen J, Kjeldsen RB, Alstrup AKO, Zhang Z, Koulianou V, Palmfeldt J, Vorup-Jensen T, Thamdrup LHE, Boisen A. A self-unfolding proximity enabling device for oral delivery of macromolecules. J Control Release 2023; 361:40-52. [PMID: 37506850 DOI: 10.1016/j.jconrel.2023.07.041] [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] [Received: 05/25/2023] [Revised: 07/14/2023] [Accepted: 07/25/2023] [Indexed: 07/30/2023]
Abstract
Oral delivery of macromolecules remains highly challenging due to their rapid degradation in the gastrointestinal tract and poor absorption across the tight junctions of the epithelium. In the last decade, researchers have investigated several medical devices to overcome these challenges using various approaches, some of which involve piercing through the intestine using micro and macro needles. We have developed a new generation of medical devices called self-unfolding proximity enabling devices, which makes it possible to orally deliver macromolecules without perforating the intestine. These devices protect macromolecules from the harsh conditions in the stomach and release their active pharmaceutical ingredients in the vicinity of the intestinal epithelium. One device version is a self-unfolding foil that we have used to deliver insulin and nisin to rats and pigs respectively. In our study, this device has shown a great potential for delivering peptides, with a significant increase in the absorption of solid dosage of insulin by ∼12 times and nisin by ∼4 times in rats and pigs, respectively. With the ability to load solid dosage forms, our devices can facilitate enhanced absorption of minimally invasive oral macromolecule formulations.
Collapse
Affiliation(s)
- Mahdi Ghavami
- The Danish National Research Foundation and Villum Foundation's Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN), Department of Health Technology, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark.
| | - Jesper Pedersen
- The Danish National Research Foundation and Villum Foundation's Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN), Department of Health Technology, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark; Department of Biomedicine, Aarhus University, 8000 Aarhus C, Denmark
| | - Rolf Bech Kjeldsen
- The Danish National Research Foundation and Villum Foundation's Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN), Department of Health Technology, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
| | | | - Zhongyang Zhang
- The Danish National Research Foundation and Villum Foundation's Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN), Department of Health Technology, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
| | - Vasiliki Koulianou
- The Danish National Research Foundation and Villum Foundation's Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN), Department of Health Technology, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
| | - Johan Palmfeldt
- Research Unit for Molecular Medicine (MMF), Department of Clinical Medicine, Aarhus University, 8000 Aarhus C, Denmark
| | | | - Lasse Højlund Eklund Thamdrup
- The Danish National Research Foundation and Villum Foundation's Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN), Department of Health Technology, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark.
| | - Anja Boisen
- The Danish National Research Foundation and Villum Foundation's Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN), Department of Health Technology, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark.
| |
Collapse
|
6
|
Wang X, Ma M, Zhang L, Wang X, Zhang Y, Zhao Y, Shi H, Zhang X, Zhao F, Pan J. Flexible use of commercial rhenium disulfide for various theranostic applications. Biomater Sci 2023; 11:5540-5548. [PMID: 37395367 DOI: 10.1039/d3bm00120b] [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: 07/04/2023]
Abstract
Rhenium disulfide (ReS2) with distinct physicochemical properties has shown promising potential in disease theranostics, such as drug delivery, computed tomography (CT), radiotherapy, and photothermal therapy (PTT). However, the synthesis and post-modification of ReS2 agents for different application scenarios are time- and energy-consuming, which seriously hinders the clinical translation of ReS2. Herein, we proposed three facile excipient strategies for different theranostic applications of ReS2 just through the flexible use of commercial ReS2 powder. Three excipients, including sodium alginate (ALG), xanthan gum (XG), and ultraviolet-cured resin (UCR), were used to prepare different dosage forms of commercial ReS2 powder, like hydrogel, suspension, and capsule, respectively. These dosage forms of ReS2 with distinct characteristics showed great potential for second near-infrared window PTT against tumours, gastric spectral CT imaging, and functional evaluation of the digestive tract in vivo. In addition, these ReS2 formulations exhibited good biocompatibility both in vitro and in vivo, showing a promising prospect for clinical transformation. More importantly, the facile excipient strategies for commercial agents pave a bridge to the development and wide bioapplication of many other theranostic biomaterials.
Collapse
Affiliation(s)
- Xiaoyi Wang
- Department of Ultrasound, The Second Hospital of Tianjin Medical University, Tianjin 300211, China
- Department of Radiology, The Second Hospital of Tianjin Medical University, Tianjin 300211, China.
| | - Min Ma
- Department of Radiology, Tianjin Key Laboratory of Functional Imaging, Tianjin Medical University General Hospital, Tianjin 300052, China.
| | - Liang Zhang
- Department of Ultrasound Diagnostics, Tangdu Hospital, Fourth Military Medical University, Xi'an 710038, China
| | - Xiaoran Wang
- Department of Nuclear Medicine, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Yimou Zhang
- College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, G12 8QQ, UK
| | - Yang Zhao
- Department of Radiology, The Second Hospital of Tianjin Medical University, Tianjin 300211, China.
| | - Huilan Shi
- Department of Radiology, Tianjin Key Laboratory of Functional Imaging, Tianjin Medical University General Hospital, Tianjin 300052, China.
| | - Xuening Zhang
- Department of Radiology, The Second Hospital of Tianjin Medical University, Tianjin 300211, China.
| | - Fangshi Zhao
- Department of Radiology, Tianjin Key Laboratory of Functional Imaging, Tianjin Medical University General Hospital, Tianjin 300052, China.
| | - Jinbin Pan
- Department of Radiology, Tianjin Key Laboratory of Functional Imaging, Tianjin Medical University General Hospital, Tianjin 300052, China.
| |
Collapse
|
7
|
Chang TJ, Kjeldsen RB, Christfort JF, Vila EM, Alstrøm TS, Zór K, Hwu ET, Nielsen LH, Boisen A. 3D-Printed Radiopaque Microdevices with Enhanced Mucoadhesive Geometry for Oral Drug Delivery. Adv Healthc Mater 2023; 12:e2201897. [PMID: 36414017 DOI: 10.1002/adhm.202201897] [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: 07/29/2022] [Revised: 10/13/2022] [Indexed: 11/24/2022]
Abstract
During the past decades, microdevices have been evaluated as a means to overcome challenges within oral drug delivery, thus improving bioavailability. Fabrication of microdevices is often limited to planar or simple 3D designs. Therefore, this work explores how microscale stereolithography 3D printing can be used to fabricate radiopaque microcontainers with enhanced mucoadhesive geometries, which can enhance bioavailability by increasing gastrointestinal retention. Ex vivo force measurements suggest increased mucoadhesion of microcontainers with adhering features, such as pillars and arrows, compared to a neutral design. In vivo studies, utilizing planar X-ray imaging, show the time-dependent gastrointestinal location of microcontainers, whereas computed tomography scanning and cryogenic scanning electron microscopy reveal information about their spatial dynamics and mucosal interactions, respectively. For the first time, the effect of 3D microdevice modifications on gastrointestinal retention is traced in vivo, and the applied methods provide a much-needed approach for investigating the impact of device design on gastrointestinal retention.
Collapse
Affiliation(s)
- Tien-Jen Chang
- The Danish National Research Foundation and Villum Foundation's Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN), Department of Health Technology, Technical University of Denmark, Kgs. Lyngby, 2800, Denmark
| | - Rolf Bech Kjeldsen
- The Danish National Research Foundation and Villum Foundation's Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN), Department of Health Technology, Technical University of Denmark, Kgs. Lyngby, 2800, Denmark
| | - Juliane Fjelrad Christfort
- The Danish National Research Foundation and Villum Foundation's Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN), Department of Health Technology, Technical University of Denmark, Kgs. Lyngby, 2800, Denmark
| | - Eduard Marzo Vila
- The Danish National Research Foundation and Villum Foundation's Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN), Department of Health Technology, Technical University of Denmark, Kgs. Lyngby, 2800, Denmark
| | - Tommy Sonne Alstrøm
- Department of Applied Mathematics and Computer Science, Technical University of Denmark, Kgs. Lyngby, 2800, Denmark
| | - Kinga Zór
- The Danish National Research Foundation and Villum Foundation's Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN), Department of Health Technology, Technical University of Denmark, Kgs. Lyngby, 2800, Denmark.,BioInnovation Institute Foundation, Copenhagen, 2200, Denmark
| | - En-Te Hwu
- The Danish National Research Foundation and Villum Foundation's Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN), Department of Health Technology, Technical University of Denmark, Kgs. Lyngby, 2800, Denmark.,BioInnovation Institute Foundation, Copenhagen, 2200, Denmark
| | - Line Hagner Nielsen
- The Danish National Research Foundation and Villum Foundation's Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN), Department of Health Technology, Technical University of Denmark, Kgs. Lyngby, 2800, Denmark
| | - Anja Boisen
- The Danish National Research Foundation and Villum Foundation's Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN), Department of Health Technology, Technical University of Denmark, Kgs. Lyngby, 2800, Denmark.,BioInnovation Institute Foundation, Copenhagen, 2200, Denmark
| |
Collapse
|
8
|
Oral vaccination using microdevices to deliver α-GalCer adjuvanted vaccine afford a mucosal immune response. J Control Release 2023; 353:134-146. [PMID: 36372387 DOI: 10.1016/j.jconrel.2022.11.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 10/24/2022] [Accepted: 11/07/2022] [Indexed: 11/25/2022]
Abstract
Oral vaccination has in the recent years gained a lot of attraction, mainly due to optimized patient compliance and logistics. However, the development of oral vaccines, especially oral subunit vaccines is challenging. Micro technology can be utilized to overcome some of these challenges, by facilitating protection and effective delivery of the vaccine components in the gastrointestinal tract (GI tract). One such technology is Microcontainers (MCs), which can be realized to be mucoadhesive and to target specific regions of the GI tract via oral delivery. Here, we test MCs, for oral delivery of the C. trachomatis vaccine candidate CTH522, in combination with effective mucosal adjuvants. The adjuvants alpha- galactosylceramide (α-GalCer), C-di-GMP and cholera toxin B were compared in vivo, to identify the most prominent adjuvant for formulation with CTH522. Formulations were administered both purely oral and as boosters following a subcutaneous (s.c.) prime with CTH522 in combination with the CAF®01 adjuvant. CTH522 formulated with α-GalCer showed to be the most efficient combination for the oral vaccine, based on the immunological analysis. Lyophilized formulation of CTH522 and α-GalCer was loaded into MCs and these were subsequently coated with Eudragit L100-55 and evaluated in vivo in mice for the ability of MCs to mediate intestinal vaccine delivery and increase immunogenicity of the vaccine. Mice receiving oral prime and boosters did show a significantly enhanced mucosal immune responses compared to naive mice. This indicates the MCs are indeed capable of delivering the vaccine formulation intact and able to stimulate the immune cells. Mice orally boosted with MCs following a s.c. prime with CAF01, demonstrated improved systemic and local Th17 responses, along with increased local IFN-γ and IgA levels compared to both the s.c. prime alone and the homologous oral prime-boost immunization. However, due to the relatively weak observed effect of the MC delivery on the immune responses, it was hypothesized that the MCs are proportionally too large for the GI tract of mice, and thus cleared before an effective immune response can be induced. To investigate this, MCs were loaded with BaSO4, and orally administered to mice. Analysis with X-ray and CT showed a transit time of approximately 1-1.5 h from the stomach to the cecum, corresponding to the standard transit time in mice, and an extremely narrow absorption window. This indicates that mice is not a suitable animal model for evaluation of MCs. These data should be taken into consideration in future in vivo trials with this and similar technologies, where larger animals might be a necessity for proof-of-concept studies.
Collapse
|
9
|
Bioadhesive Tannic-Acid-Functionalized Zein Coating Achieves Engineered Colonic Delivery of IBD Therapeutics via Reservoir Microdevices. Pharmaceutics 2022; 14:pharmaceutics14112536. [PMID: 36432727 PMCID: PMC9699562 DOI: 10.3390/pharmaceutics14112536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 11/09/2022] [Accepted: 11/17/2022] [Indexed: 11/22/2022] Open
Abstract
The biggest challenge in oral delivery of anti-inflammatory drugs such as 5-aminosalicylic acid (5-ASA) is to (i) prevent rapid absorption in the small intestine and (ii) achieve localized release at the site of inflammation in the lower gut, i.e., the colon. Here, we present an advanced biopolymeric coating comprising of tannic-acid-functionalized zein protein to provide a sustained, colon-targeted release profile for 5-ASA and enhance the mucoadhesion of the dosage form via a mussel-inspired mechanism. To enable localized delivery and provide high local concentration, 5-ASA is loaded into the microfabricated drug carriers (microcontainers) and sealed with the developed coating. The functionality and drug release profile of the coating are characterized and optimized in vitro, showing great tunability, scalability, and stability toward proteases. Further, ex vivo experiments demonstrate that the tannic acid functionalization can significantly enhance the mucoadhesion of the coating, which is followed up by in vivo investigations on the intestinal retention, and pharmacokinetic evaluation of the 5-ASA delivery system. Results indicate that the developed coating can provide prolonged colonic delivery of 5-ASA. Therefore, the here-developed biodegradable coating can be an eco-friendly substitute to the state-of-the-art commercial counterparts for targeted delivery of 5-ASA and other small molecule drugs.
Collapse
|
10
|
Christfort JF, Milián‐Guimerá C, Kamguyan K, Hansen MB, Nielsen LH, Thamdrup LHE, Zór K, Boisen A. Sequential Drug Release Achieved with Dual‐compartment Microcontainers: Towards Combination Therapy. ADVANCED THERAPEUTICS 2022. [DOI: 10.1002/adtp.202200106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Juliane Fjelrad Christfort
- The Danish National Research Foundation and Villum Foundation's Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics, Department of Health Technology Technical University of Denmark Kgs. Lyngby 2800 Denmark
| | - Carmen Milián‐Guimerá
- The Danish National Research Foundation and Villum Foundation's Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics, Department of Health Technology Technical University of Denmark Kgs. Lyngby 2800 Denmark
| | - Khorshid Kamguyan
- The Danish National Research Foundation and Villum Foundation's Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics, Department of Health Technology Technical University of Denmark Kgs. Lyngby 2800 Denmark
| | - Morten Borre Hansen
- Center for Intestinal Absorption and Transport of Biopharmaceuticals, Department of Health Technology Technical University of Denmark Kgs. Lyngby 2800 Denmark
- Present address : Agilent Technologies Denmark ApS Produktionsvej 42 Glostrup 2600 Denmark
| | - Line Hagner Nielsen
- The Danish National Research Foundation and Villum Foundation's Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics, Department of Health Technology Technical University of Denmark Kgs. Lyngby 2800 Denmark
| | - Lasse Højlund Eklund Thamdrup
- The Danish National Research Foundation and Villum Foundation's Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics, Department of Health Technology Technical University of Denmark Kgs. Lyngby 2800 Denmark
| | - Kinga Zór
- The Danish National Research Foundation and Villum Foundation's Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics, Department of Health Technology Technical University of Denmark Kgs. Lyngby 2800 Denmark
| | - Anja Boisen
- The Danish National Research Foundation and Villum Foundation's Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics, Department of Health Technology Technical University of Denmark Kgs. Lyngby 2800 Denmark
| |
Collapse
|
11
|
Insights into whey protein-based carriers for targeted delivery and controlled release of bioactive components. Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2022.108002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
12
|
Wen Y, Zhu W, Zhang X, Sun SK. Fabrication of gelatin Bi 2S 3 capsules as a highly sensitive X-ray contrast agent for gastrointestinal motility assessment in vivo. RSC Adv 2022; 12:13645-13652. [PMID: 35530383 PMCID: PMC9069310 DOI: 10.1039/d2ra00993e] [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: 02/15/2022] [Accepted: 04/13/2022] [Indexed: 11/21/2022] Open
Abstract
Tiny BaSO4 rod-based X-ray imaging is the most frequently-used method for clinical diagnosis of gastrointestinal motility disorders. The BaSO4 rods usually have a small size to pass through the gastrointestinal tract smoothly, but suffer from unavoidably low sensitivity. Herein, we developed Bi2S3 capsules as a high-performance X-ray contrast agent for gastrointestinal motility assessment for the first time. The Bi2S3 capsules were synthesized by the encapsulation of commercial Bi2S3 powder into commercial gelatin capsules and subsequent coating of ultraviolet-curable resin. The prepared Bi2S3 capsules showed excellent biocompatibility in vitro and in vivo and superior X-ray attenuation ability due to the large atomic number and high K-edge value of Bi. The developed Bi2S3 capsules can serve as a small but highly sensitive X-ray contrast agent to quantitatively assess gastrointestinal motility in a vincristine-induced gastrointestinal motility disorder model in vivo by X-ray, CT and spectral CT imaging successfully, solving the intrinsic drawbacks of clinically used BaSO4.
Collapse
Affiliation(s)
- Ya Wen
- Department of Medical Imaging, Tianjin Medical University Tianjin 300203 China
| | - Wang Zhu
- Department of Radiographic Center, Wuhan Children's Hospital, Tongji Medical College of Huazhong University of Science and Technology Wuhan 430015 China
| | - Xuejun Zhang
- Department of Medical Imaging, Tianjin Medical University Tianjin 300203 China
| | - Shao-Kai Sun
- Department of Medical Imaging, Tianjin Medical University Tianjin 300203 China
| |
Collapse
|
13
|
Nørgaard Kristensen M, Rades T, Boisen A, Müllertz A. Impact of oral gavage technique of drug-containing microcontainers on the gastrointestinal transit and absorption in rats. Int J Pharm 2022; 618:121630. [PMID: 35245635 DOI: 10.1016/j.ijpharm.2022.121630] [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: 02/03/2022] [Revised: 02/27/2022] [Accepted: 02/28/2022] [Indexed: 11/16/2022]
Abstract
Oral gavage is the most common way to administer drug formulations orally to rats. Yet, the technique applied and its influence on gastrointestinal (GI) transit receive little attention. This study aims to investigate the impact of three oral gavage techniques on GI transit and drug absorption utilizing microcontainers (MCs). The MCs were filled with paracetamol and BaSO4 (1:1 w/w ratio), coated with Eudragit S100, and filled into size-9 gelatin capsules. An in vitro study confirmed the intactness of the coating, and the capsules were administered to rats with air, water, or a piston. X-ray imaging determined the locations of the MCs, and the corresponding plasma concentration of paracetamol established a correlation with the location. The fastest GI transit occurred with air-dosing, while water-dosing caused delayed gastric emptying for 3h with non-quantifiable paracetamol absorption. Piston-dosed MCs were retained in the stomach for up to 1h, though for 3h in one rat. Air-dosing caused discomfort and stress in rats, thus limiting its ethical and physiological relevance. Water-dosing confined its use due to delayed gastric emptying. In conclusion, the oral gavage technique affected the GI transit of MCs and, consequently, drug absorption. Piston-dosing appeared to be the superior dosing technique.
Collapse
Affiliation(s)
- Maja Nørgaard Kristensen
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
| | - Thomas Rades
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
| | - Anja Boisen
- Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN), Department of Health Technology, Technical University of Denmark, Ørsteds Plads, 2800 Kgs. Lyngby, Denmark
| | - Anette Müllertz
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark; Bioneer:FARMA, Department of Pharmacy, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark.
| |
Collapse
|