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Light-responsive biomaterials for ocular drug delivery. Drug Deliv Transl Res 2022:10.1007/s13346-022-01196-5. [PMID: 35751001 DOI: 10.1007/s13346-022-01196-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/09/2022] [Indexed: 11/03/2022]
Abstract
Light-responsive biomaterials can be used for the delivery of therapeutic drugs and nucleic acids, where the tunable/precise delivery of payload highlights the potential of such biomaterials for treating a variety of conditions. The translucency of eyes and advances of laser technology in ophthalmology make light-responsive delivery of drugs feasible. Importantly, light can be applied in a non-invasive fashion; therefore, light-triggered drug delivery systems have great potential for clinical impact. This review will examine various types of light-responsive polymers and the chemistry that underpins their application as ophthalmic drug delivery systems.
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Xu H, Han Y, Zhao G, Zhang L, Zhao Z, Wang Z, Zhao L, Hua L, Naveena K, Lu J, Yu R, Liu H. Hypoxia-Responsive Lipid-Polymer Nanoparticle-Combined Imaging-Guided Surgery and Multitherapy Strategies for Glioma. ACS APPLIED MATERIALS & INTERFACES 2020; 12:52319-52328. [PMID: 33166112 DOI: 10.1021/acsami.0c12971] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Glioma is the most prevalent type of malignant brain tumor and is usually very aggressive. Because of the high invasiveness and aggressive proliferative growth of glioma, it is difficult to resect completely or cure with surgery. Residual glioma cells are a primary cause of postoperative recurrence. Herein, we describe a hypoxia-responsive lipid polymer nanoparticle (LN) for fluorescence-guided surgery, chemotherapy, photodynamic therapy (PDT), and photothermal therapy (PTT) combination multitherapy strategies targeting glioma. The hypoxia-responsive LN [LN (DOX + ICG)] contains a hypoxia-responsive component poly(nitroimidazole)25 [P-(Nis)25], the glioma-targeting peptide angiopep-2 (A2), indocyanine green (ICG), and doxorubicin (DOX). LN (DOX + ICG) comprises four distinct functional components: (1) A2: A2 modified nanoparticles effectively target gliomas, enhancing drug concentration in gliomas; (2) P-(Nis)25: (i) the hydrophobic component of LN (DOX + ICG) with hypoxia responsive ability to encapsulate DOX and ICG; (ii) allows rapid release of DOX from LN (DOX + ICG) after 808 nm laser irradiation; (3) ICG: (i) ICG allows imaging-guided surgery, combining PDT and PTT therapies; (ii) upon irradiation with an 808 nm laser, ICG creates a hypoxic environment; (4) DOX inhibits glioma growth. This work demonstrates that LN (DOX + ICG) might provide a novel clinical approach to preventing post-surgical recurrence of glioma.
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Affiliation(s)
- Haoyue Xu
- Institute of Nervous System Diseases, Xuzhou Medical University, Xuzhou 221002, P. R. China
| | - Yuhan Han
- Institute of Nervous System Diseases, Xuzhou Medical University, Xuzhou 221002, P. R. China
| | - Gang Zhao
- Institute of Nervous System Diseases, Xuzhou Medical University, Xuzhou 221002, P. R. China
| | - Long Zhang
- Institute of Nervous System Diseases, Xuzhou Medical University, Xuzhou 221002, P. R. China
| | - Zongren Zhao
- Institute of Nervous System Diseases, Xuzhou Medical University, Xuzhou 221002, P. R. China
| | - Zhen Wang
- Institute of Nervous System Diseases, Xuzhou Medical University, Xuzhou 221002, P. R. China
| | - Liang Zhao
- Institute of Nervous System Diseases, Xuzhou Medical University, Xuzhou 221002, P. R. China
| | - Lei Hua
- Institute of Nervous System Diseases, Xuzhou Medical University, Xuzhou 221002, P. R. China
- Department of Neurosurgery, Affiliated Hospital of Xuzhou Medical University, Xuzhou 221002, P. R. China
| | - Konduru Naveena
- Institute of Nervous System Diseases, Xuzhou Medical University, Xuzhou 221002, P. R. China
| | - Jun Lu
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou 221116, Jiangsu, China
| | - Rutong Yu
- Institute of Nervous System Diseases, Xuzhou Medical University, Xuzhou 221002, P. R. China
- Department of Neurosurgery, Affiliated Hospital of Xuzhou Medical University, Xuzhou 221002, P. R. China
- Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Cancer Institute, Xuzhou Medical University, Xuzhou 221002, P. R. China
| | - Hongmei Liu
- Institute of Nervous System Diseases, Xuzhou Medical University, Xuzhou 221002, P. R. China
- Department of Neurosurgery, Affiliated Hospital of Xuzhou Medical University, Xuzhou 221002, P. R. China
- Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Cancer Institute, Xuzhou Medical University, Xuzhou 221002, P. R. China
- Department of Neurosurgery, The Third Affiliated Hospital of Xuzhou Medical University, Xuzhou 221002, P. R. China
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Sen M, Honavar SG. Circumscribed choroidal hemangioma: An overview of clinical manifestation, diagnosis and management. Indian J Ophthalmol 2019; 67:1965-1973. [PMID: 31755430 PMCID: PMC6896540 DOI: 10.4103/ijo.ijo_2036_19] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 11/10/2019] [Accepted: 11/12/2019] [Indexed: 11/12/2022] Open
Abstract
Circumscribed choroidal hemangioma is a benign vascular tumor which presents in middle-aged adults with progressive diminution of vision, metamorphopsia, floaters, and visual field defects. Diagnosis is based on the characteristic clinical features. It is an orange-red, usually solitary, tumor situated in the posterior pole. The visual symptoms are because of the associated subretinal fluid, cystoid macular edema, and, in long-standing cases, retinal pigment epithelium changes, subretinal fibrosis and retinoschisis. It must be distinguished from the more ominous amelanotic melanoma and choroidal metastasis. Diagnostic tools such as ultrasound, fundus fluorescein angiography, indocyanine green angiography, and optical coherence tomography are helpful in cases with diagnostic dilemma. Treatment is indicated in symptomatic cases. The management of choroidal hemangioma has evolved over the years beginning with laser photocoagulation to transpupillary thermotherapy, photodynamic therapy, plaque brachytherapy and external beam radiotherapy. No one therapeutic option holds superiority over the other. In this article, we review the epidemiology, clinical manifestations and treatment of the circumscribed variant of choroidal hemangioma.
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Affiliation(s)
- Mrittika Sen
- Ocular Oncology Service, Centre for Sight, Hyderabad, Telangana, India
| | - Santosh G Honavar
- Ocular Oncology Service, Centre for Sight, Hyderabad, Telangana, India
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Chiu WT, Tran TTV, Pan SC, Huang HK, Chen YC, Wong TW. Cystic Fibrosis Transmembrane Conductance Regulator: A Possible New Target for Photodynamic Therapy Enhances Wound Healing. Adv Wound Care (New Rochelle) 2019; 8:476-486. [PMID: 31456905 DOI: 10.1089/wound.2018.0927] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Accepted: 02/27/2019] [Indexed: 12/23/2022] Open
Abstract
Objective: Cell migration is an essential process in skin wound healing. Photodynamic therapy (PDT) enhances wound healing by photoactivating a photosensitizer with a specific wavelength of light. Cystic fibrosis transmembrane conductance regulator (CFTR) is an ion channel expressed in multiple layers of keratinocytes. Recent studies showed that the activation of CFTR-related downstream signaling affects skin wound healing. We examined whether indocyanine green (ICG)-mediated PDT-enhanced cell migration is related to CFTR activation. Approach: The spatial and temporal expression levels of CFTR and proteins involved in focal adhesion, including focal adhesion kinase (FAK) and paxillin, were evaluated during cell migration in vitro and in vivo for wound healing. Results: ICG-PDT-conditioned medium collected from cells exposed to 5 J/cm2 near-infrared light in the presence of 100 μg/mL ICG activated CFTR and enhanced HaCaT cell migration. The expression of phosphorylated FAK Tyr861 and phosphorylated paxillin in focal adhesions was spatially and temporally regulated in parallel by ICG-PDT-conditioned medium. Curcumin, a nonspecific activator of CFTR, further increased PDT-enhanced cell migration, whereas inhibition of CFTR and FAK delayed cell migration. The involvement of CFTR in ICG-PDT-enhanced skin wound healing was confirmed in a mouse back skin wound model. Innovation: CFTR is a potential new therapeutic target in ICG-PDT to enhance wound healing. Conclusion: ICG-PDT-enhanced cell migration may be related to activation of the CFTR and FAK pathway. Conditioned medium collected from ICG-PDT may be useful for treating patients with chronic skin ulcer by regulating CFTR expression in keratinocytes.
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Affiliation(s)
- Wen-Tai Chiu
- Department of Biomedical Engineering, College of Engineering, National Cheng Kung University, Tainan, Taiwan
| | - Thi-Tuong Vi Tran
- Department of Dermatology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Department of Biochemistry and Molecular Biology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Shin-Chen Pan
- Section of Plastic and Reconstructive Surgery, Department of Surgery, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Ho-Kai Huang
- Department of Biomedical Engineering, College of Engineering, National Cheng Kung University, Tainan, Taiwan
| | - Ying-Chi Chen
- Department of Biomedical Engineering, College of Engineering, National Cheng Kung University, Tainan, Taiwan
| | - Tak-Wah Wong
- Department of Dermatology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Department of Biochemistry and Molecular Biology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Center of Applied Nanomedicine, National Cheng Kung University, Tainan, Taiwan
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