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Chen S, Miao Q, Liu Y, Xiao Q, Lin Y, Yang Y, Guo F. Construction and functional evaluation of oral long-acting insulin hydrogel microparticles based on physical and chemical double crosslinking. Int J Biol Macromol 2023; 253:126915. [PMID: 37730004 DOI: 10.1016/j.ijbiomac.2023.126915] [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: 07/12/2023] [Revised: 09/05/2023] [Accepted: 09/13/2023] [Indexed: 09/22/2023]
Abstract
The objective of this study was to enhance the convenience and effectiveness of diabetes treatment by developing hydrogel microparticles as an oral insulin delivery system, aiming to reduce the necessity for frequent treatments. The hydrogel microparticles were prepared with polysaccharides through a combination of physical and chemical crosslinking method, they achieved good results in insulin loading efficiency (70 %), insulin release efficiency (98 %) and sustained release time (>20 h). The effective transmembrane transport was validated using an intestinal epithelial cell model, which demonstrated a continuous hypoglycemic effect lasting from 6 to 26 h in a type 2 diabetes mouse model. Additionally, the relative bioavailability of insulin reached 30.14 ± 2.62 %, representing a significant breakthrough in the field of oral insulin delivery carriers. Furthermore, oral insulin hydrogel exhibited a substantial improvement in insulin resistance, organ damage, and diabetes-related complications stemming from hyperglycemia. These compelling findings underscore the potential of hydrogel microparticles as a cost-effective and valuable strategy for oral drug delivery in diabetes treatment.
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Affiliation(s)
- ShengQin Chen
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Department of Biology, College of Science, Shantou University, Shantou, Guangdong 515063, PR China
| | - QingYa Miao
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Department of Biology, College of Science, Shantou University, Shantou, Guangdong 515063, PR China
| | - Yang Liu
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Department of Biology, College of Science, Shantou University, Shantou, Guangdong 515063, PR China.
| | - Qiao Xiao
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Department of Biology, College of Science, Shantou University, Shantou, Guangdong 515063, PR China
| | - YuKai Lin
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Department of Biology, College of Science, Shantou University, Shantou, Guangdong 515063, PR China
| | - Yu Yang
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Department of Biology, College of Science, Shantou University, Shantou, Guangdong 515063, PR China
| | - FengBiao Guo
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Department of Biology, College of Science, Shantou University, Shantou, Guangdong 515063, PR China
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2
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Xia D, Li J, Feng L, Gao Z, Liu J, Wang X, Hu Y. Advances in Targeting Drug Biological Carriers for Enhancing Tumor Therapy Efficacy. Macromol Biosci 2023; 23:e2300178. [PMID: 37466216 DOI: 10.1002/mabi.202300178] [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: 04/24/2023] [Revised: 06/27/2023] [Accepted: 07/17/2023] [Indexed: 07/20/2023]
Abstract
Chemotherapy drugs continue to be the main component of oncology treatment research and have been proven to be the main treatment modality in tumor therapy. However, the poor delivery efficiency of cancer therapeutic drugs and their potential off-target toxicity significantly limit their effectiveness and extensive application. The recent integration of biological carriers and functional agents is expected to camouflage synthetic biomimetic nanoparticles for targeted delivery. The promising candidates, including but not limited to red blood cells and their membranes, platelets, tumor cell membrane, bacteria, immune cell membrane, and hybrid membrane are typical representatives of biological carriers because of their excellent biocompatibility and biodegradability. Biological carriers are widely used to deliver chemotherapy drugs to improve the effectiveness of drug delivery and therapeutic efficacy in vivo, and tremendous progress is made in this field. This review summarizes recent developments in biological vectors as targeted drug delivery systems based on microenvironmental stimuli-responsive release, thus highlighting the potential applications of target drug biological carriers. The review also discusses the possibility of clinical translation, as well as the exploitation trend of these target drug biological carriers.
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Affiliation(s)
- Donglin Xia
- School of Public Health, Nantong University, Nantong, Jiangsu, 226019, P.R. China
| | - Jia Li
- School of Public Health, Nantong University, Nantong, Jiangsu, 226019, P.R. China
| | - Lingzi Feng
- School of Public Health, Nantong University, Nantong, Jiangsu, 226019, P.R. China
| | - Ziqing Gao
- School of Public Health, Nantong University, Nantong, Jiangsu, 226019, P.R. China
| | - Jun Liu
- Department of Laboratory Medicine, Wuxi No. 5 People's Hospital Affiliated Jiangnan University, Wuxi, Jiangsu, 214005, P.R. China
| | - Xiangqian Wang
- Department of Radiotherapy, Nantong Tumor Hospital, Tumor Hospital Affiliated to Nantong University, Nantong, Jiangsu, 226361, P.R. China
| | - Yong Hu
- College of Engineering and Applied Sciences, Nanjing University, Nanjing, Jiangsu, 210023, P.R. China
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3
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Chen M, Leng Y, He C, Li X, Zhao L, Qu Y, Wu Y. Red blood cells: a potential delivery system. J Nanobiotechnology 2023; 21:288. [PMID: 37608283 PMCID: PMC10464085 DOI: 10.1186/s12951-023-02060-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Accepted: 08/11/2023] [Indexed: 08/24/2023] Open
Abstract
Red blood cells (RBCs) are the most abundant cells in the body, possessing unique biological and physical properties. RBCs have demonstrated outstanding potential as delivery vehicles due to their low immunogenicity, long-circulating cycle, and immune characteristics, exhibiting delivery abilities. There have been several developments in understanding the delivery system of RBCs and their derivatives, and they have been applied in various aspects of biomedicine. This article compared the various physiological and physical characteristics of RBCs, analyzed their potential advantages in delivery systems, and summarized their existing practices in biomedicine.
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Affiliation(s)
- Mengran Chen
- Department of Hematology, West China Hospital, Sichuan University/West China School of Nursing, Sichuan University, Chengdu, 610041, Sichuan, People's Republic of China
| | - Yamei Leng
- Department of Hematology, West China Hospital, Sichuan University/West China School of Nursing, Sichuan University, Chengdu, 610041, Sichuan, People's Republic of China
| | - Chuan He
- Guang'an People's Hospital, Guang'an, 638001, Sichuan, People's Republic of China
| | - Xuefeng Li
- Department of Hematology, West China Hospital, Sichuan University/West China School of Nursing, Sichuan University, Chengdu, 610041, Sichuan, People's Republic of China
| | - Lei Zhao
- Department of Hematology, West China Hospital, Sichuan University/West China School of Nursing, Sichuan University, Chengdu, 610041, Sichuan, People's Republic of China
| | - Ying Qu
- Department of Hematology, West China Hospital, Sichuan University/West China School of Nursing, Sichuan University, Chengdu, 610041, Sichuan, People's Republic of China.
| | - Yu Wu
- Department of Hematology, West China Hospital, Sichuan University/West China School of Nursing, Sichuan University, Chengdu, 610041, Sichuan, People's Republic of China.
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4
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Wang L, Zhang Y, Ma Y, Zhai Y, Ji J, Yang X, Zhai G. Cellular Drug Delivery System for Disease Treatment. Int J Pharm 2023; 641:123069. [PMID: 37225024 DOI: 10.1016/j.ijpharm.2023.123069] [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: 02/05/2023] [Revised: 05/08/2023] [Accepted: 05/21/2023] [Indexed: 05/26/2023]
Abstract
The application of variable novel drug delivery system has shown a flowering trend in recent years. Among them, the cell-based drug delivery system (DDS) utilizes the unique physiological function of cells to deliver drugs to the lesion area, which is the most complex and intelligent DDS at present. Compared with the traditional DDS, the cell-based DDS has the potential of prolonged circulation in body. Cellular DDS is expected to be the best carrier to realize multifunctional drug delivery. This paper introduces and analyzes common cellular DDSs such as blood cells, immune cells, stem cells, tumor cells and bacteria as well as relevant research examples in recent years. We hope that this review can provide a reference for future research on cell vectors and promote the innovative development and clinical transformation of cell-based DDS.
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Affiliation(s)
- Luyue Wang
- Department of Pharmaceutics, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, P.R. China
| | - Yu Zhang
- Department of Pharmaceutics, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, P.R. China
| | - Yukun Ma
- Department of Pharmacy, Jinan Stomatologic Hospital, Jinan, Shandong, 250001, P.R. China
| | - Yujia Zhai
- Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, Utah 84124, United States of America
| | - Jianbo Ji
- Department of Pharmaceutics, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, P.R. China.
| | - Xiaoye Yang
- Department of Pharmaceutics, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, P.R. China.
| | - Guangxi Zhai
- Department of Pharmaceutics, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, P.R. China.
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5
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Zhao J, Shi Y, Xue L, Liang Y, Shen J, Wang J, Wu M, Chen H, Kong M. Glucose-decorated engineering platelets for active and precise tumor-targeted drug delivery. Biomater Sci 2023; 11:3965-3975. [PMID: 37114937 DOI: 10.1039/d3bm00326d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Abstract
Precise targeted delivery of therapeutic agents is crucial for tumor therapy. As an emerging fashion, cell-based delivery provides better biocompatibility and lower immunogenicity and enables a more precise accumulation of drugs in tumor cells. In this study, a novel engineering platelet was constructed through cell membrane fusion with a synthesized glycolipid molecule, DSPE-PEG-Glucose (DPG). The obtained glucose-decorated platelets (DPG-PLs) maintained their resting state with structural and functional integrities, while they would be activated and triggered to release their payloads once they arrive at the tumor microenvironment. Glucose decoration was verified to impart the DPG-PLs with stronger binding effects toward tumor cells that overexpress GLUT1 on their surfaces. Together with the natural homing property toward tumor sites and bleeding injury, doxorubicin (DOX)-loaded platelets (DPG-PL@DOX) exhibited the strongest antitumor effects on a mouse melanoma model, and the antitumor effect was significantly enhanced in the tumor bleeding model. DPG-PL@DOX provides an active and precise solution for tumor-targeted drug delivery, especially for postoperative treatments.
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Affiliation(s)
- Jiaxuan Zhao
- College of Marine Life Science, Ocean University of China, 5 Yushan Road, 266003, Qingdao, China.
| | - Yan Shi
- College of Marine Life Science, Ocean University of China, 5 Yushan Road, 266003, Qingdao, China.
| | - Lixia Xue
- Department of Neurosurgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 227 Chongqing South Road, 200025, Shanghai, China.
| | - Yuqing Liang
- Department of Neurosurgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 227 Chongqing South Road, 200025, Shanghai, China.
| | - Jiale Shen
- College of Marine Life Science, Ocean University of China, 5 Yushan Road, 266003, Qingdao, China.
| | - Jiarui Wang
- College of Marine Life Science, Ocean University of China, 5 Yushan Road, 266003, Qingdao, China.
| | - Meng Wu
- College of Marine Life Science, Ocean University of China, 5 Yushan Road, 266003, Qingdao, China.
| | - Hao Chen
- Department of Neurosurgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 227 Chongqing South Road, 200025, Shanghai, China.
| | - Ming Kong
- College of Marine Life Science, Ocean University of China, 5 Yushan Road, 266003, Qingdao, China.
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6
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Zhang X, Zhu X, He Y, Zhang Y, Huang S, Yi X, Li Y, Hou Z, Fan Z. Biomimetic dual-responsive bioengineered nanotheranostics for intracellular cascade-synthesizing chemo-drugs and efficient oncotherapy. J Mater Chem B 2022; 11:119-130. [PMID: 36504220 DOI: 10.1039/d2tb01943d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Intracellular-synthesized chemo-drugs based on the inherent characteristics of the tumor microenvironment (TME) have been extensively applied in oncotherapy. However, combining other therapeutic strategies to convert nontoxic small molecules into toxic small-molecule chemo-drugs in the TME is still a huge challenge. To address this issue, herein we have developed a biomimetic dual-responsive bioengineered nanotheranostics system via the supramolecular co-assembly of the nontoxic small-molecule 1,5-dihydroxynaphthalene (DHN) and small-molecule photosensitizer indocyanine green (ICG) followed by surface cloaking through red blood cell membranes (RBCs) for intracellular cascade-synthesizing chemo-drugs and efficient oncotherapy. Such nanotheranostics with a suitable diameter, core-shell structure, ultrahigh dual-drug payload rate, and excellent stability can efficiently accumulate in tumor regions and then internalize into tumor cells. Under the dual stimulations of near-infrared laser irradiation and acidic lysosomes, the nanotheranostics system exhibited exceptional instability under heat-primed membrane rupture and pH decrease, thereby achieving rapid disassembly and on-demand drug release. Furthermore, the released ICG can efficiently convert 3O2 into 1O2. After that, the generated 1O2 can efficiently oxidize the released nontoxic DHN into the highly toxic chemo-drug juglone, thereby realizing intracellular cascade-synthesizing chemo-drugs and synergistic photodynamic-chemotherapy while reducing detrimental side effects on normal cells or tissues. Overall, it is envisioned that RBC-cloaked nanotheranostics with intracellular cascade-synthesizing chemo-drugs can provide a promising strategy for intracellular chemo-drug synthesis-based oncotherapy.
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Affiliation(s)
- Xin Zhang
- College of Materials, Xiamen University, Xiamen, 361005, China.
| | - Xinglin Zhu
- College of Materials, Xiamen University, Xiamen, 361005, China.
| | - Yuan He
- Department of Cardiothoracic Surgery, the Affiliated Dongnan Hospital of Xiamen University, Zhangzhou, 363005, China
| | - Ying Zhang
- Department of Radiology, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, 271016, China.
| | - Shan Huang
- Xiamen Key Laboratory of Traditional Chinese Bio-engineering, Xiamen Medical College, Xiamen, 361021, China.
| | - Xue Yi
- Institute of Respiratory Diseases, Xiamen Medical College, Xiamen, 361021, China
| | - Ying Li
- Xiamen Key Laboratory of Traditional Chinese Bio-engineering, Xiamen Medical College, Xiamen, 361021, China.
| | - Zhenqing Hou
- College of Materials, Xiamen University, Xiamen, 361005, China.
| | - Zhongxiong Fan
- College of Materials, Xiamen University, Xiamen, 361005, China. .,Institute of Materia Medica & College of Life Science and Technology, Xinjiang University, Urumqi, 830017, China
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7
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Bao H, Chen J, Wang X, Chen C, Gong J, Liu J, Xia D. Ultrasound-Triggered On-Demand Insulin Release for Diabetes Mellitus Treatment. Ann Biomed Eng 2022; 50:1826-1836. [PMID: 35752994 DOI: 10.1007/s10439-022-02994-1] [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: 02/28/2022] [Accepted: 06/13/2022] [Indexed: 12/30/2022]
Abstract
Exogenous insulin (INS) is successfully used for controlling glucose in diabetic patients. Although frequent INS injections can overcome hyperglycemia, they are both painful and inconvenient. Herein, we report an ultrasound-regulated INS release platform (INS-PPIX@ER hydrogel) that allows for remotely regulated on-demand INS release and minimizes pain. In this system, protoporphyrin IX (PPIX)-containing erythrocytes (ERs) served as an INS reservoir, an injectable peptide hydrogel provided strong protection for the ERs, and INS release was regulated using ultrasound. This particular INS release behavior was triggered by increased production of reactive oxygen species (ROS) by PPIX from the PPIX-loaded ERs under ultrasound irradiation. The ROS then interacted with the phospholipid bilayer of the ERs, thereby opening the stomata of the INS-PPIX@ER and releasing INS. INS-PPIX@ER hydrogels could control hyperglycemia within 2 h and maintained normal blood glucose levels for up to 3 days. This effective remote approach allowed closed-loop drug release spatiotemporally without causing any pain and injury. Our findings could serve as a powerful tool for constructing a precisely controlled release system.
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Affiliation(s)
- Hongyi Bao
- School of Public Health, Nantong University, 9 Seyuan Road, Nantong, 226019, Jiangsu, China
| | - Jingru Chen
- School of Public Health, Nantong University, 9 Seyuan Road, Nantong, 226019, Jiangsu, China
| | - Xiaoping Wang
- School of Public Health, Nantong University, 9 Seyuan Road, Nantong, 226019, Jiangsu, China
| | - Chao Chen
- School of Public Health, Nantong University, 9 Seyuan Road, Nantong, 226019, Jiangsu, China
| | - Jun Gong
- Nantong Tumor Hospital, The Affiliated Tumor Hospital of Nantong University, Nantong, 226361, Jiangsu, China.
| | - Jun Liu
- School of Public Health, Nantong University, 9 Seyuan Road, Nantong, 226019, Jiangsu, China.
| | - Donglin Xia
- School of Public Health, Nantong University, 9 Seyuan Road, Nantong, 226019, Jiangsu, China.
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8
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Feng L, Huang X, Li J, Chen C, Ma Y, Gu H, Hu Y, Xia D. A Closed-Loop Autologous Erythrocyte-Mediated Delivery Platform for Diabetic Nephropathy Therapy. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3556. [PMID: 36296745 PMCID: PMC9612375 DOI: 10.3390/nano12203556] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 09/19/2022] [Accepted: 10/08/2022] [Indexed: 06/16/2023]
Abstract
Failure to control blood glucose level (BGL) may aggravate oxidative stress and contribute to the development of diabetic nephropathy (DN). Using erythrocytes (ERs) as the carriers, a smart self-regulatory insulin (INS) release system was constructed to release INS according to changes in BGLs to improve patients' compliance and health. To overcome the limited sources of ERs and decrease the risk of transmitting infections, we developed an in vitro, closed-loop autologous ER-mediated delivery (CAER) platform, based on a commercial hemodialysis instrument modified with a glucose-responsive ER-based INS delivery system (GOx-INS@ER). After the blood was drained via a jugular vein cannula, some of the blood was pumped into the CAER platform. The INS was packed inside the autologous ERs in the INS reactor, and then their surface was modified with glucose oxidase (GOx), which acts as a glucose-activated switch. In vivo, the CAER platform showed that the BGL responsively controlled INS release in order to control hyperglycemia and maintain the BGL in the normal range for up to 3 days; plus, there was good glycemic control without the added burden of hemodialysis in DN rabbits. These results demonstrate that this closed-loop extracorporeal hemodialysis platform provides a practical approach for improving diabetes management in DN patients.
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Affiliation(s)
- Lingzi Feng
- School of Public Health, Nantong University, Nantong 226019, China
| | - Xinzhong Huang
- Department of Nephrology, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - Jia Li
- School of Public Health, Nantong University, Nantong 226019, China
| | - Chao Chen
- School of Public Health, Nantong University, Nantong 226019, China
| | - Yidan Ma
- Department of Nephrology, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - Haiying Gu
- School of Public Health, Nantong University, Nantong 226019, China
| | - Yong Hu
- MOE Key Laboratory of High Performance Polymer Materials & Technology, College of Engineering and Applied Sciences, Nanjing University, Nanjing 210033, China
| | - Donglin Xia
- School of Public Health, Nantong University, Nantong 226019, China
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Dai M, Xu K, Xiao D, Zheng Y, Zheng Q, Shen J, Qian Y, Chen W. In Situ Forming Hydrogel as a Tracer and Degradable Lacrimal Plug for Dry Eye Treatment. Adv Healthc Mater 2022; 11:e2200678. [PMID: 35841368 DOI: 10.1002/adhm.202200678] [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: 04/02/2022] [Revised: 06/10/2022] [Indexed: 01/27/2023]
Abstract
Lacrimal plug is an effective and widely therapeutic strategy to treat dry eye. However, almost all commercialized plugs are fixed in a certain design and associated with many complications, such as spontaneous plug extrusion, epiphora, and granuloma and cannot be traced in the long-term. Herein, a simple in situ forming hydrogel is developed as a tracer and degradable lacrimal plug to achieve the best match with the irregular lacrimal passages. In this strategy, methacrylate-modified silk fibroin (SFMA) is served as a network, and a self-assembled indocyanine green fluorescence tracer nanoparticle (FTN) is embedded as an indicator to develop the hydrogel plug using visible photo-crosslinking. This SFMA/FTN hydrogel plug has excellent biocompatibility and biodegradability, which can be noninvasively monitored by near-infrared light. In vivo tests based on dry eye rabbits show that the SFMA/FTN hydrogel plug can completely block the lacrimal passages and greatly improve the various clinical indicators of dry eye. These results demonstrate that the SFMA/FTN hydrogel is suitable as an injectable and degradable lacrimal plug with a long-term tracking function. The work offers a new approach to the development of absorbable plugs for the treatment of dry eye.
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Affiliation(s)
- Mali Dai
- Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, Zhejiang, 325001, China
| | - Kejia Xu
- Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, Zhejiang, 325001, China
| | - Decheng Xiao
- Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, Zhejiang, 325001, China
| | - Yujing Zheng
- Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, Zhejiang, 325001, China
| | - Qinxiang Zheng
- Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, Zhejiang, 325001, China
| | - Jianliang Shen
- Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, Zhejiang, 325001, China.,Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang, 325001, China
| | - Yuna Qian
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang, 325001, China
| | - Wei Chen
- Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, Zhejiang, 325001, China
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10
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Yang Y, Wang X, Yuan X, Zhu Q, Chen S, Xia D. Glucose-activatable insulin delivery with charge-conversional polyelectrolyte multilayers for diabetes care. Front Bioeng Biotechnol 2022; 10:996763. [PMID: 36246353 PMCID: PMC9557070 DOI: 10.3389/fbioe.2022.996763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Accepted: 09/06/2022] [Indexed: 11/24/2022] Open
Abstract
One of the most effective treatments for diabetes is to design a glucose-regulated insulin (INS) delivery system that could adjust the INS release time and rate to reduce diabetes-related complications. Here, mixed multiple layer-by-layer (mmLbL)-INS microspheres were developed for glucose-mediated INS release and an enhanced hypoglycemic effect for diabetes care. To achieve ultrafast glucose-activated INS release, glucose oxidase (GOx) was assembled with a positively charged polymer and modified on INS LbL. The mmLbL-INS microspheres were constructed with one, two, and four layers of the polyelectrolyte LbL assembly at a ratio of 1:1:1. Under hyperglycemia, GOx converts a change in the hyperglycemic environment to a pH stimulus, thus providing sufficient hydrogen ion. The accumulated hydrogen ion starts LbL charge shifting, and anionic polymers are converted to cationic polymers through hydrolytic cleavage of amine-functionalized side chains. The results of in vitro INS release suggested that glucose can modulate the mmLbL-INS microspheres in a pulsatile profile. In vivo studies validated that this formulation enhanced the hypoglycemic effect in STZ-induced diabetic rats within 2 h of subcutaneous administration and facilitated stabilization of blood glucose levels for up to 2 days. This glucose-activatable LbL microsphere system could serve as a powerful tool for constructing a precisely controlled release system.
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Affiliation(s)
- Yanguang Yang
- Department of Radiotherapy, Nantong Tumor Hospital, Tumor Hospital Affiliated to Nantong University, Nantong, China
| | - Xiangqian Wang
- Department of Radiotherapy, Nantong Tumor Hospital, Tumor Hospital Affiliated to Nantong University, Nantong, China
| | - Xiaopeng Yuan
- Department of Radiotherapy, Nantong Tumor Hospital, Tumor Hospital Affiliated to Nantong University, Nantong, China
| | - Qiwei Zhu
- Department of Radiotherapy, Nantong Tumor Hospital, Tumor Hospital Affiliated to Nantong University, Nantong, China
| | - Shusen Chen
- Department of Radiotherapy, Nantong Tumor Hospital, Tumor Hospital Affiliated to Nantong University, Nantong, China
| | - Donglin Xia
- School of Public Health, Nantong University, Nantong, China
- *Correspondence: Donglin Xia,
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