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Yang D, Ning J, Liao X, Jiang H, Qin S. Local Sustained Chemotherapy of Pancreatic Cancer Using Endoscopic Ultrasound-Guided Injection of Biodegradable Thermo-Sensitive Hydrogel. Int J Nanomedicine 2023; 18:3989-4005. [PMID: 37496690 PMCID: PMC10366675 DOI: 10.2147/ijn.s417445] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Accepted: 07/08/2023] [Indexed: 07/28/2023] Open
Abstract
Purpose Endoscopic ultrasound-guided fine-needle injection (EUS-FNI) offers a promising minimally invasive approach for locally targeted management of advanced pancreatic cancer. However, the efficacy is limited due to the rapid plasma clearance of chemotherapeutic agents. Injectable hydrogels can form drug release depots, which provide a feasible solution for optimizing targeted chemotherapy through EUS-FNI. Methods A drug delivery system was developed, consisting of gemcitabine (GEM) and thermo-sensitive hydrogel (PLGA-PEG-PLGA, PPP). The injectability, gel formation ability, biocompatibility and sustained drug delivery properties of PPP hydrogel were verified in vitro and in vivo. The effects of GEM/PPP hydrogel on cell proliferation, invasion, metastasis, and apoptosis were explored through co-culturing with PANC-1 cells. The therapeutic effects of GEM/PPP hydrogel on xenograft mice were compared with those of GEM, ethanol and polidocanol using the precisely targeted EUS-FNI technology. Tumor sections were examined by H&E, Ki-67, and TUNEL staining. Results GEM/PPP hydrogel exhibited excellent injectability, biocompatibility, and the capability of sustained drug delivery for up to 7 days by forming a gel triggered by body temperature. It demonstrated the best therapeutic effects, significantly reducing proliferation, invasion and migration of PANC-1 cells while promoting apoptosis. After precise injection using EUS-FNI technology, GEM/PPP hydrogel resulted in a reduction of tumor weight by up to 75.96% and extending the survival period by 14.4 days with negligible adverse effects. Pathological examination revealed no systemic toxicity and significant apoptosis and minimal proliferation as well. Conclusion The combination of GEM/PPP hydrogel and EUS-FNI technology provides an optimal approach of precise chemotherapy for pancreatic cancer, builds a bridge for clinical translation of basic research, and brings great hope for innovation of minimally invasive treatment modalities. The first-hand EUS image data obtained in this study also serves as a crucial reference for future clinical trials.
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Affiliation(s)
- Dan Yang
- Department of Gastroenterology, the First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People’s Republic of China
| | - Jing Ning
- Department of Gastroenterology, the First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People’s Republic of China
| | - Xiaomin Liao
- Department of Gastroenterology, the First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People’s Republic of China
| | - Haixing Jiang
- Department of Gastroenterology, the First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People’s Republic of China
| | - Shanyu Qin
- Department of Gastroenterology, the First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People’s Republic of China
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Li Y, Zhu Y, Chen J, Wang H, Zhi W, Wang Z, Guan Y, Wang B, Jia Y, Huang S, Zhu X. Thermo-sensitive injectable hydrogel loading with elemene-loaded liposomes for enhanced anti-tumor effect. J Biomater Appl 2023; 37:1847-1857. [PMID: 37102311 DOI: 10.1177/08853282231172837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/28/2023]
Abstract
Due to the heterogeneity and the complexity of the tumor microenvironment, combination therapy, especially the combination of chemotherapy and photothermal therapy (PTT), had received increasing attention. However, the co-delivery of small molecule drugs for chemotherapy and photothermal agents was a key issue. Herein, we prepared a novel thermo-sensitive hydrogel loading with elemene (ELE)-loaded and nano graphene oxide (NGO)-based liposomes for enhanced combined therapy. ELE was applied as the model drug for chemotherapy because it was a natural sesquiterpene drug with broad-spectrum and efficient antitumor activity. NGO was applied as drug carrier and photothermal agent simultaneously due to its two-dimensional structure and high photo-thermal conversion efficacy. NGO was further modified with glycyrrhetinic acid (GA) to improve its water dispersion, biocompatibility and tumor-targeting ability. ELE was loaded by GA-modified NGO (GA/NGO) to prepare the liposomes designated as ELE-GA/NGO-Lip, which was further mixed with chitosan (CS) solution and β-glycerin sodium phosphate (β-GP) solution to prepare the thermo-sensitive hydrogel designated as ELE-GA/NGO-Lip-gel. The obtained ELE-GA/NGO-Lip-gel had the gelling temperature of 37°C, temperature and pH-response gel dissolution and high photo-thermal conversion effect. More importantly, ELE-GA/NGO-Lip-gel upon 808 nm laser irradiation had relative high anti-tumor efficiency against SMMC-7721 cells in vitro. This research might provide a potent platform for the application of thermos-sensitive injectable hydrogel in combined tumor therapy.
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Affiliation(s)
- Yijing Li
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, PR China
| | - Yanhui Zhu
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, PR China
| | - Jiaqi Chen
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, PR China
| | - Huahua Wang
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, PR China
| | - Weiwei Zhi
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, PR China
| | - Ziang Wang
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, PR China
| | - Yanbin Guan
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, PR China
| | - Baiyan Wang
- School of Basic Medicine, Henan University of Chinese Medicine, Zhengzhou, PR China
| | - Yongyan Jia
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, PR China
| | - Shengnan Huang
- Academy of Chinese Medical Sciences, Henan University of Chinese Medicine, Zhengzhou, PR China
| | - Xiali Zhu
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, PR China
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Kaliaraj GS, Shanmugam DK, Dasan A, Mosas KKA. Hydrogels-A Promising Materials for 3D Printing Technology. Gels 2023; 9:gels9030260. [PMID: 36975708 PMCID: PMC10048566 DOI: 10.3390/gels9030260] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 03/15/2023] [Accepted: 03/20/2023] [Indexed: 03/29/2023] Open
Abstract
Hydrogels are a promising material for a variety of applications after appropriate functional and structural design, which alters the physicochemical properties and cell signaling pathways of the hydrogels. Over the past few decades, considerable scientific research has made breakthroughs in a variety of applications such as pharmaceuticals, biotechnology, agriculture, biosensors, bioseparation, defense, and cosmetics. In the present review, different classifications of hydrogels and their limitations have been discussed. In addition, techniques involved in improving the physical, mechanical, and biological properties of hydrogels by admixing various organic and inorganic materials are explored. Future 3D printing technology will substantially advance the ability to pattern molecules, cells, and organs. With significant potential for producing living tissue structures or organs, hydrogels can successfully print mammalian cells and retain their functionalities. Furthermore, recent advances in functional hydrogels such as photo- and pH-responsive hydrogels and drug-delivery hydrogels are discussed in detail for biomedical applications.
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Affiliation(s)
- Gobi Saravanan Kaliaraj
- Centre for Nanoscience and Nanotechnology, Sathyabama Institute of Science and Technology, Chennai 600 119, India
| | - Dilip Kumar Shanmugam
- Centre for Nanoscience and Nanotechnology, Sathyabama Institute of Science and Technology, Chennai 600 119, India
| | - Arish Dasan
- FunGlass-Centre for Functional and Surface Functionalised Glass, Alexander Dubcek University of Trencin, 91150 Trencin, Slovakia
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Chen IC, Su CY, Chen PY, Hoang TC, Tsou YS, Fang HW. Investigation and Characterization of Factors Affecting Rheological Properties of Poloxamer-Based Thermo-Sensitive Hydrogel. Polymers (Basel) 2022; 14:polym14245353. [PMID: 36559720 PMCID: PMC9781578 DOI: 10.3390/polym14245353] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 12/01/2022] [Accepted: 12/05/2022] [Indexed: 12/13/2022] Open
Abstract
Poloxamers are negatively temperature-sensitive hydrogels and their hydrophilic groups interact with water molecules at lower temperatures (liquid phase) while their hydrophobic groups interact more strongly with increases in temperature causing gelation. To investigate the factors affecting the rheological properties of poloxamers, various parameters including different poloxamer P407 concentrations, poloxamers P407/P188 blending ratios and additives were examined. The results presented a clear trend of decreasing gelling temperature/time when P407 was at higher concentrations. Moreover, the addition of P188 enhanced the gelling temperature regardless of poloxamer concentration. Polysaccharides and their derivatives have been widely used as components of hydrogel and we found that alginic acid (AA) or carboxymethyl cellulose (CMC) reduced the gelling temperature of poloxamers. In addition, AA-containing poloxamer promoted cell proliferation and both AA -and CMC-containing poloxamer hydrogels reduced cell migration. This study investigated the intriguing characteristics of poloxamer-based hydrogel, providing useful information to compounding an ideal and desired thermo-sensitive hydrogel for further potential clinical applications such as development of sprayable anti-adhesive barrier, wound-healing dressings or injectable drug-delivery system for cartilage repair.
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Affiliation(s)
- I-Cheng Chen
- Accelerator for Happiness and Health Industry, National Taipei University of Technology, No. 1, Sec. 3, Zhongxiao E. Rd., Taipei 10608, Taiwan
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Sec. 3, Zhongxiao E. Rd., Taipei 10608, Taiwan
| | - Chen-Ying Su
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Sec. 3, Zhongxiao E. Rd., Taipei 10608, Taiwan
| | - Pei-Yu Chen
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Sec. 3, Zhongxiao E. Rd., Taipei 10608, Taiwan
| | - The Chien Hoang
- Biotegy Vietnam Company Limited, No. 23, Alley 48, Tho Lao Street, Dong Mac Ward, Hai Ba Trung District, Hanoi City 11609, Vietnam
| | - Yi-Syue Tsou
- Department of Neurosurgery, Taipei Medical University Hospital, Taipei 110301, Taiwan
- Taipei Neuroscience Institute, Taipei Medical University, Taipei 110301, Taiwan
- The Ph.D. Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University and National Health Research Institutes, Taipei 110301, Taiwan
| | - Hsu-Wei Fang
- Accelerator for Happiness and Health Industry, National Taipei University of Technology, No. 1, Sec. 3, Zhongxiao E. Rd., Taipei 10608, Taiwan
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Sec. 3, Zhongxiao E. Rd., Taipei 10608, Taiwan
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, No. 35, Keyan Road, Zhunan Town, Miaoli County 35053, Taiwan
- Correspondence: ; Tel.: +886-2-2771-2171 (ext. 2521)
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Wang H, Wang B, Wang S, Chen J, Zhi W, Guan Y, Cai B, Zhu Y, Jia Y, Huang S, Zhu X. Injectable in situ intelligent thermo-responsive hydrogel with glycyrrhetinic acid-conjugated nano graphene oxide for chemo-photothermal therapy of malignant hepatocellular tumor. J Biomater Appl 2022; 37:151-165. [PMID: 35343281 DOI: 10.1177/08853282221078107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Malignant tumor is one of the major diseases with high morbidity and mortality. The purpose of this study is to prepare berberine hydrochloride (BH) in situ thermo-sensitive hydrogel based on glycyrrhetinic acid (GA) modified nano graphene oxide (NGO) (GA-BH-NGO-gel). NGO was taken as the photosensitizer, GA was taken as the target molecule, and BH was taken as the model drug. The physicochemical properties and anti-tumor activity in vivo and in vitro were also studied. This subject could provide a certain theoretical basis for the chemo-photothermal therapy combined treatment of malignant tumor. The release behavior of GA-BH-NGO-gel in vitro presented sustained and temperature-dependent drug release effect. The anti-tumor activity studies in vivo and in vitro had shown that GA-BH-NGO-gel had stronger anti-tumor activity, which could be targeting distributed to the tumor tissues. Moreover, the inhibitory effect of GA-BH-NGO-gel was enhanced when combined with 808 nm of laser irradiation. In this research, the chemo-photothermal combination therapy was applied into the tumor treatment, which may provide certain research ideas for the clinical treatment of malignant tumor.
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Affiliation(s)
- Huahua Wang
- School of Pharmacy, 232830Henan University of Chinese Medicine, Zhengzhou, China
| | - Baiyan Wang
- School of Pharmacy, 232830Henan University of Chinese Medicine, Zhengzhou, China
| | - Shasha Wang
- School of Pharmacy, 232830Henan University of Chinese Medicine, Zhengzhou, China
| | - Jiaqi Chen
- School of Pharmacy, 232830Henan University of Chinese Medicine, Zhengzhou, China
| | - Weiwei Zhi
- School of Pharmacy, 232830Henan University of Chinese Medicine, Zhengzhou, China
| | - Yanbin Guan
- School of Pharmacy, 232830Henan University of Chinese Medicine, Zhengzhou, China
| | - Bangrong Cai
- School of Pharmacy, 232830Henan University of Chinese Medicine, Zhengzhou, China
| | - Yanhui Zhu
- School of Pharmacy, 232830Henan University of Chinese Medicine, Zhengzhou, China
| | - Yongyan Jia
- School of Pharmacy, 232830Henan University of Chinese Medicine, Zhengzhou, China
| | - Shengnan Huang
- School of Pharmacy, 232830Henan University of Chinese Medicine, Zhengzhou, China
| | - Xiali Zhu
- School of Pharmacy, 232830Henan University of Chinese Medicine, Zhengzhou, China
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Sun Y, Li K, Li C, Zhang Y, Zhao D. Thermogel Delivers Oxaliplatin and Alendronate in situ for Synergistic Osteosarcoma Therapy. Front Bioeng Biotechnol 2020; 8:573962. [PMID: 33042974 PMCID: PMC7523411 DOI: 10.3389/fbioe.2020.573962] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 08/21/2020] [Indexed: 01/01/2023] Open
Abstract
The therapeutic effect of osteosarcoma (OS) has not made extraordinary progress in the past few decades. Oxaliplatin (OXA) is a widely used clinical anti-tumor drug. Recent studies have shown that OXA can trigger anti-tumor immunity by inducing immunogenic death (ICD). Alendronate (ALN) has been used to threaten the skeletal system tumors because of the unique bone affinity and the ability to inhibit bone destruction. In this study, we co-loaded OXA and ALN on mPEG45-PLV19 thermo-sensitive hydrogel to perform in situ treatment on the mouse OS model. Slowly released OXA can induce immunogenic death of tumor cells. At the same time, thermo-sensitive hydrogels can induce the accumulation of cytotoxic T lymphocytes. Besides, ALN could synergistically diminish tumors and prevent bone destruction. This system could synergistically inhibit the progression of OS and lung metastasis and has no toxicity to various organs throughout the body.
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Affiliation(s)
- Yifu Sun
- Department of Orthopedics, The Second Hospital of Jilin University, Changchun, China
| | - Ke Li
- Department of Orthopedics, The Fourth Affiliated Hospital of China Medical University, Shenyang, China
| | - Chen Li
- Department of Orthopedics, The Second Hospital of Jilin University, Changchun, China
| | - Ying Zhang
- Department of Orthopedics, Zhongshan Hospital Affiliated to Xiamen University, Xiamen, China
| | - Duoyi Zhao
- Department of Orthopedics, The Fourth Affiliated Hospital of China Medical University, Shenyang, China
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7
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Shan H, Li K, Zhao D, Chi C, Tan Q, Wang X, Yu J, Piao M. Locally Controlled Release of Methotrexate and Alendronate by Thermo-Sensitive Hydrogels for Synergistic Inhibition of Osteosarcoma Progression. Front Pharmacol 2020; 11:573. [PMID: 32508628 PMCID: PMC7248331 DOI: 10.3389/fphar.2020.00573] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Accepted: 04/15/2020] [Indexed: 12/28/2022] Open
Abstract
Osteosarcoma (OS) is a serious primary bone malignant tumor that can easily affect children and adolescents. Chemotherapy is one of the important and feasible clinical treatment strategies for the treatment of OS at present, which is severely limited due to insufficient retention time, poor penetration ability, and serious side effects of current anti-tumor drug preparations. In this work, a novel injectable thermo-sensitive hydrogel (mPEG45-PLV19) loaded with methotrexate and alendronate, and the sustained release at the tumor site synergistically inhibited the progression of OS. The mPEG45-PLV19 shows excellent physical and chemical properties. Compared with other treatment groups, the in vivo treatment of gel+ methotrexate + alendronate effectively inhibited the growth of tumor. More importantly, it significantly reduced bone destruction and lung metastasis caused by OS. Therefore, this injectable thermo-sensitive hydrogel drug delivery system has broad prospects for OS chemotherapy.
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Affiliation(s)
- Hongli Shan
- Department of Clinical Laboratory, The First Hospital of Jilin University, Changchun, China
| | - Ke Li
- Department of Orthopedics, the Fourth Affiliated Hospital of China Medical University, Shenyang, China
| | - Duoyi Zhao
- Department of Orthopedics, the Fourth Affiliated Hospital of China Medical University, Shenyang, China
| | - Changliang Chi
- Department of Urology, the First Hospital of Jilin University, Changchun, China
| | - Qinyuan Tan
- Department of Urology, the First Hospital of Jilin University, Changchun, China
| | - Xiaoqing Wang
- Department of Urology, the First Hospital of Jilin University, Changchun, China
| | - Jinhai Yu
- Department of Gastrointestinal Surgery, The First Hospital of Jilin University, Changchun, China
| | - Meihua Piao
- Department of Anesthesiology, The First Hospital of Jilin University, Changchun, China
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Tan J, Xie S, Wang G, Yu CW, Zeng T, Cai P, Huang H. Fabrication and Optimization of the Thermo-Sensitive Hydrogel Carboxymethyl Cellulose/Poly(N-isopropylacrylamide-co-acrylic acid) for U(VI) Removal from Aqueous Solution. Polymers (Basel) 2020; 12:E151. [PMID: 31936062 PMCID: PMC7022275 DOI: 10.3390/polym12010151] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 12/18/2019] [Accepted: 01/02/2020] [Indexed: 01/15/2023] Open
Abstract
In this work, the thermo-sensitive materials N-isopropylacrylamide (NIPAM) and acrylic acid (AA) were crosslinked with carboxymethyl cellulose (CMC) (CMC/P (NIPAM-co-AA)) via a free radical polymerization method for the removal of U(VI) from aqueous solution. The L16 (45) orthogonal experiments were designed for the optimization of the synthesis condition. The chemical structures of the crosslinking hydrogel were confirmed by FTIR spectroscopy. The microstructural analyses were conducted though scanning electron microscopy (SEM) to show the pore structure of the hydrogel. The adsorption performance of the CMC/P (NIPAM-co-AA) hydrogel for the uptake of U(VI) from simulated wastewater was also investigated. The adsorption reached equilibrium within 1 h. Under the reaction of pH = 6 and a temperature of 298 K, an initial concentration of U(VI) of 5 mg·L-1, and 10 mg of the CMC/P(NIPAM-co-AA) hydrogel, the maximum adsorption capacity was 14.69 mg g-1. The kinetics fitted perfectly with the pseudo-second-order model, and the isotherms for the composite hydrogel adsorption of U(VI) was in accordance with the Langmuir model. The chemical modification confirmed that the acylamino group played an important role in uranium adsorption. The desorption and reusability study revealed that the resolution rate was still available at approximately 77.74% after five alternate heating cycles at 20 and 50 °C of adsorption-desorption.
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Affiliation(s)
- Juan Tan
- College of Civil Engineering, University of South China, Hengyang 421001, China; (J.T.); (G.W.); (C.W.Y.); (T.Z.)
| | - Shuibo Xie
- Key Discipline Laboratory for National Defence of Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang 421001, China
| | - Guohua Wang
- College of Civil Engineering, University of South China, Hengyang 421001, China; (J.T.); (G.W.); (C.W.Y.); (T.Z.)
| | - Chuck Wah Yu
- College of Civil Engineering, University of South China, Hengyang 421001, China; (J.T.); (G.W.); (C.W.Y.); (T.Z.)
| | - Taotao Zeng
- College of Civil Engineering, University of South China, Hengyang 421001, China; (J.T.); (G.W.); (C.W.Y.); (T.Z.)
| | - Pingli Cai
- Hunan Provincial Key Laboratory of Pollution Control and Resources Technology, University of South China, Hengyang 421001, China; (P.C.); (H.H.)
| | - Huayong Huang
- Hunan Provincial Key Laboratory of Pollution Control and Resources Technology, University of South China, Hengyang 421001, China; (P.C.); (H.H.)
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Rong X, Ji Y, Zhu X, Yang J, Qian D, Mo X, Lu Y. Neuroprotective effect of insulin-loaded chitosan nanoparticles/PLGA-PEG-PLGA hydrogel on diabetic retinopathy in rats. Int J Nanomedicine 2018; 14:45-55. [PMID: 30587984 PMCID: PMC6302824 DOI: 10.2147/ijn.s184574] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND To pursuit effective sustained release systems for insulin to treat diabetic retinopathy (DR), a novel insulin delivering system was developed via loading onto chitosan nanoparticles/poly(lactic-co-glycolic acid)-poly(ethylene glycol)-poly(lactic-co-glycolic acid) hydrogel (ICNPH). METHODS AND MATERIALS Examinations including electroretinography, HE staining, transmission electron microscopy, terminal deoxynucleotidyl transferased UTP nick-end labeling, immunofluorescence, Western blot, and real-time polymerase chain reaction were performed to evaluate the neuroprotective efficacy of ICNPH on DR by a single subconjunctival injection. RESULTS Compared with the insulin, blank, and sham treatment groups, subconjunctival injection of ICNPH significantly reduced the decrease of scotopic B-wave amplitude, alleviated retinal micro- and ultrastructural changes, and reduced retinal cell apoptosis caused in DR rats. Meanwhile, a significant reduction of vascular endothelial growth factor and glial fibrillary acidic protein expression as well as a remarkable increase in Occludin expression was also found in retinas in ICNPH group compared with the sham treatment group. CONCLUSION The results indicate that ICNPH has sufficient neuroprotective effect on retinas through subconjunctival injection in DR rats and facilitates controlled insulin delivery. It might be one of the therapeutic strategies for DR in the near future.
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Affiliation(s)
- Xianfang Rong
- Department of Ophthalmology and The Eye Institute, Eye and Ear, Nose, and Throat Hospital, Fudan University, Shanghai, China, ;
- The Key Laboratory of Myopia, Ministry of Health, Shanghai, China, ;
- Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai, China, ;
- Key National Health Committee Key Laboratory of Myopia, Fudan University, Shanghai, China, ;
- Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China, ;
| | - Yinghong Ji
- Department of Ophthalmology and The Eye Institute, Eye and Ear, Nose, and Throat Hospital, Fudan University, Shanghai, China, ;
- The Key Laboratory of Myopia, Ministry of Health, Shanghai, China, ;
- Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai, China, ;
- Key National Health Committee Key Laboratory of Myopia, Fudan University, Shanghai, China, ;
- Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China, ;
| | - Xiangjia Zhu
- Department of Ophthalmology and The Eye Institute, Eye and Ear, Nose, and Throat Hospital, Fudan University, Shanghai, China, ;
- The Key Laboratory of Myopia, Ministry of Health, Shanghai, China, ;
- Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai, China, ;
- Key National Health Committee Key Laboratory of Myopia, Fudan University, Shanghai, China, ;
- Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China, ;
| | - Jin Yang
- Department of Ophthalmology and The Eye Institute, Eye and Ear, Nose, and Throat Hospital, Fudan University, Shanghai, China, ;
- The Key Laboratory of Myopia, Ministry of Health, Shanghai, China, ;
- Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai, China, ;
- Key National Health Committee Key Laboratory of Myopia, Fudan University, Shanghai, China, ;
- Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China, ;
| | - Dongjin Qian
- Department of Ophthalmology and The Eye Institute, Eye and Ear, Nose, and Throat Hospital, Fudan University, Shanghai, China, ;
- The Key Laboratory of Myopia, Ministry of Health, Shanghai, China, ;
- Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai, China, ;
- Key National Health Committee Key Laboratory of Myopia, Fudan University, Shanghai, China, ;
- Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China, ;
| | - Xiaofen Mo
- Department of Ophthalmology and The Eye Institute, Eye and Ear, Nose, and Throat Hospital, Fudan University, Shanghai, China, ;
- The Key Laboratory of Myopia, Ministry of Health, Shanghai, China, ;
- Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai, China, ;
- Key National Health Committee Key Laboratory of Myopia, Fudan University, Shanghai, China, ;
- Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China, ;
| | - Yi Lu
- Department of Ophthalmology and The Eye Institute, Eye and Ear, Nose, and Throat Hospital, Fudan University, Shanghai, China, ;
- The Key Laboratory of Myopia, Ministry of Health, Shanghai, China, ;
- Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai, China, ;
- Key National Health Committee Key Laboratory of Myopia, Fudan University, Shanghai, China, ;
- Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China, ;
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Fong YT, Chen CH, Chen JP. Intratumoral Delivery of Doxorubicin on Folate-Conjugated Graphene Oxide by In-Situ Forming Thermo-Sensitive Hydrogel for Breast Cancer Therapy. Nanomaterials (Basel) 2017; 7:E388. [PMID: 29135959 PMCID: PMC5707605 DOI: 10.3390/nano7110388] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Revised: 11/03/2017] [Accepted: 11/07/2017] [Indexed: 12/12/2022]
Abstract
By taking advantage of the pH-sensitive drug release property of graphene oxide (GO) after intracellular uptake, we prepared folic acid (FA)-conjugated GO (GOFA) for targeted delivery of the chemotherapeutic drug doxorubicin (DOX). GOFA-DOX was further encapsulated in an injectable in-situ forming thermo-sensitive hyaluronic acid-chitosan-g-poly(N-isopropylacrylamide) (HACPN) hydrogel for intratumoral delivery of DOX. As the degradation time of HACPN could be extended up to 3 weeks, intratumoral delivery of GOFA-DOX/HACPN could provide controlled and targeted delivery of DOX through slow degradation HACPN and subsequent cellular uptake of released GOFA-DOX by tumor cells through interactions of GOFA with folate receptors on the tumor cell's surface. GOFA nano-carrier and HACPN hydrogel were first characterized for the physico-chemical properties. The drug loading experiments indicated the best preparation condition of GOFA-DOX was by reacting 0.1 mg GOFA with 2 mg DOX. GOFA-DOX showed pH-responsive drug release with ~5 times more DOX released at pH 5.5 than at pH 7.4 while only limited DOX was released from GOFA-DOX/HACPN at pH 7.4. Intracellular uptake of GOFA by endocytosis and release of DOX from GOFA-DOX in vitro could be confirmed from transmission electron microscopic and confocal laser scanning microscopic analysis with MCF-7 breast cancer cells. The targeting effect of FA was revealed when intracellular uptake of GOFA was blocked by excess FA. This resulted in enhanced in vitro cytotoxicity as revealed from the lower half maximal inhibitory concentration (IC50) value of GOFA-DOX (7.3 μg/mL) compared with that of DOX (32.5 μg/mL) and GO-DOX (10 μg/mL). The flow cytometry analysis indicated higher apoptosis rates for cells treated with GOFA-DOX (30%) compared with DOX (8%) and GO-DOX (11%). Animal studies were carried out with subcutaneously implanted MCF-7 cells in BALB/c nude mice and subject to intratumoral administration of drugs. The relative tumor volumes of control (saline) and GOFA-DOX/HACPN groups at day 21 were 2.17 and 1.79 times that at day 0 with no significant difference. In comparison, the relative tumor volumes of treatment groups at the same time were significantly different at 1.02, 0.67 and 0.48 times for DOX, GOFA-DOX and GOFA-DOX/HACPN groups, respectively. The anti-tumor efficacy was also supported by images from an in vivo imaging system (IVIS) using MCF-7 cells transfected with luciferase (MCF-7/Luc). Furthermore, tissue biopsy examination and blood analysis indicated that intratumoral delivery of DOX using GOFA-DOX/HACPN did not elicit acute toxicity. Taken together, GOFA-DOX/HACPN could be deemed as a safe and efficient intratumoral drug delivery system for breast cancer therapy.
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Affiliation(s)
- Yi Teng Fong
- Department of Chemical and Materials Engineering, Chang Gung University, Taoyuan 33302, Taiwan.
- Department of Plastic and Reconstructive Surgery and Craniofacial Research Center, Chang Gung Memorial Hospital, Linkou, Kwei-San, Taoyuan 33305, Taiwan.
| | - Chih-Hao Chen
- Department of Plastic and Reconstructive Surgery and Craniofacial Research Center, Chang Gung Memorial Hospital, Linkou, Kwei-San, Taoyuan 33305, Taiwan.
| | - Jyh-Ping Chen
- Department of Chemical and Materials Engineering, Chang Gung University, Taoyuan 33302, Taiwan.
- Department of Plastic and Reconstructive Surgery and Craniofacial Research Center, Chang Gung Memorial Hospital, Linkou, Kwei-San, Taoyuan 33305, Taiwan.
- Research Center for Chinese Herbal Medicine and Research Center for Food and Cosmetic Safety, College of Human Ecology, Chang Gung University of Science and Technology, Kwei-San, Taoyuan 33302, Taiwan.
- Department of Materials Engineering, Ming Chi University of Technology, Tai-Shan, New Taipei City 24301, Taiwan.
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Lin T, Zhao X, Zhang Y, Lian H, Zhuang J, Zhang Q, Chen W, Wang W, Liu G, Guo S, Wu J, Hu Y, Guo H. Floating Hydrogel with Self-Generating Micro-Bubbles for Intravesical Instillation. Materials (Basel) 2016; 9:E1005. [PMID: 28774123 DOI: 10.3390/ma9121005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Revised: 11/26/2016] [Accepted: 12/05/2016] [Indexed: 11/17/2022]
Abstract
Intravesical instillation is the main therapy for bladder cancer and interstitial cystitis. However, most drug solutions are eliminated from bladder after the first voiding of urine. To solve this problem, we proposed a floating hydrogel with self-generating micro-bubbles as a new delivery system. It floated in urine, avoiding the urinary obstruction and bladder irritation that ordinary hydrogels caused. In this study, we abandoned traditional gas-producing method like chemical decomposition of NaHCO3, and used the foamability of Poloxamer 407 (P407) instead. Through simple shaking (just like shaking SonoVue for contrast-enhanced ultrasound in clinical), the P407 solution will “lock” many micro-bubbles and float in urine as quickly and steadily as other gas producing materials. In vivo release experiments showed that drug was released continually from hydrogel for 10 h during the erosion process. Thus, the residence time of drug in bladder was prolonged and drug efficacy was improved. In vivo efficacy study using rabbit acute bladder injury model showed that prolonged drug residence time in bladder increased the efficiency of heparin in the protection of bladder mucosal permeability. Therefore, our floating hydrogel system with self-generating micro-bubbles was single-component, simply prepared and efficacy enhancing, successfully exempting users from worries on safety and clinical efficiency from bench to bedside.
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