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Wang S, Jin S, Li G, Xu M, Deng D, Xiao Z, Sun H, Zhang S, Zhang E, Xie L, Li G, Dai Y, Liu Z, Shu Q, Wu S. Transmucosal Delivery of Self-Assembling Photosensitizer-Nitazoxanide Nanocomplexes with Fluorinated Chitosan for Instillation-Based Photodynamic Therapy of Orthotopic Bladder Tumors. ACS Biomater Sci Eng 2021; 7:1485-1495. [PMID: 33641333 DOI: 10.1021/acsbiomaterials.0c01786] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Theoretically, on account of improved local bioavailability of photosensitizers and attenuated systemic phototoxicity, intravesical instillation-based photodynamic therapy (PDT) for bladder cancer (BCa) would demonstrate significant advantages in comparison with the intravenous route. Actually, the low transmucosal efficiency, hypoxia regulation deficiency, as well as the biosafety risks of intravesical drug agents all have greatly limited the clinical development of instillation-based PDT for BCa. Herein, based on our recent findings on bladder intravesical vectors and photodynamic treatment, we explore and find that the conventional antiparasitic agent nitazoxanide (NTZ) by mixing with chlorine e6 (Ce6) conjugated human serum albumin (HSA), HSA-Ce6, is capable of forming self-assembled HSA-Ce6/NTZ nanoparticles (NPs). Then, the HSA-Ce6/NTZ complexes further fabricate with fluorinated chitosan (FCS), the synthesized transmucosal carrier, to form a biocompatible nanoscale system HSA-Ce6/NTZ/FCS NPs, which exhibit remarkably improved transmucosal delivery and uptake capacities compared with HSA-Ce6/NTZ alone or non-fluorinated HSA-Ce6/NTZ/CS NPs. Meanwhile, due to the metabolic regulation of tumor cells by NTZ, the tumor hypoxia could be efficaciously ameliorated to further favor PDT. This work represents a new photosensitizer nanomedicine formulation for the perfection of PDT performance through the modulation of tumor hypoxia by clinically approved agents. Thus, intravesical instillation of HSA-Ce6/NTZ/FCS NPs with favorable biocompatibility, followed by cystoscope-mediated PDT, could achieve a dramatically improved therapeutic effect to ablate orthotopic bladder tumors.
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Affiliation(s)
- Shupeng Wang
- School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081, China.,Department of Urology, The Third Affiliated Hospital of Shenzhen University (Luohu Hospital Group), Shenzhen 518000, China
| | - Shaohua Jin
- School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Guangzhi Li
- Department of Urology, The Third Affiliated Hospital of Shenzhen University (Luohu Hospital Group), Shenzhen 518000, China
| | - Ming Xu
- Department of Urology, The Third Affiliated Hospital of Shenzhen University (Luohu Hospital Group), Shenzhen 518000, China
| | - Dashi Deng
- Department of Urology, The Third Affiliated Hospital of Shenzhen University (Luohu Hospital Group), Shenzhen 518000, China
| | - Zhisheng Xiao
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, China
| | - Haiyan Sun
- Department of Urology, The Third Affiliated Hospital of Shenzhen University (Luohu Hospital Group), Shenzhen 518000, China
| | - Shaohua Zhang
- Department of Urology, The Third Affiliated Hospital of Shenzhen University (Luohu Hospital Group), Shenzhen 518000, China
| | - Enpu Zhang
- Department of Urology, The Third Affiliated Hospital of Shenzhen University (Luohu Hospital Group), Shenzhen 518000, China
| | - Lejing Xie
- Department of Urology, The Third Affiliated Hospital of Shenzhen University (Luohu Hospital Group), Shenzhen 518000, China
| | - Guo Li
- Department of Urology, The Third Affiliated Hospital of Shenzhen University (Luohu Hospital Group), Shenzhen 518000, China
| | - Yizhi Dai
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, China
| | - Zhuang Liu
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, China
| | - Qinghai Shu
- School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Song Wu
- Department of Urology, The Third Affiliated Hospital of Shenzhen University (Luohu Hospital Group), Shenzhen 518000, China
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Ohkubo R, Tomita M, Hotta Y, Nagira M, Hayashi M. Comparative Study of Flux of FITC-labeled Dextran 4000 on Normal (iso)- and Hyper-osmolarity in Basal Side in Caco-2 Cell Monolayers. Drug Metab Pharmacokinet 2003; 18:404-8. [PMID: 15618761 DOI: 10.2133/dmpk.18.404] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We have shown previously that the flux of fluorescein isothiocyanate dextran 4000 (FD-4) is transported across the Caco-2 cell monolayers in a polarized fashion favoring the basal to apical direction under normal conditions (i.e., isotonic solution in basal side). Furthermore, FD-4 transport may occur via a process that included a certain degree of substrate specificity for polysaccharide and transcytosis. In the present study, we compared the flux of FD-4 in the basal to apical direction (efflux) and the apical to basal direction (influx) in stress conditions (i.e., hyperosmolarity in basal side) to those in normal conditions (i.e., iso-osmolarity in basal side). The efflux of FD-4 was increased by hyperosmolarity in basal side, but the influx was decreased when compared with normal conditions. Neither dextran 10, 000 nor colchicine inhibited the efflux of FD-4 in hyperosmolarity conditions. The inhibition of efflux of FD-4 was observed not by S-nitroso-N-acetylpenicillamine but by sodium nitroprusside and sodium ferrocyanide. These results collectively suggest that hyperosmolarity in basal side accelerates the efflux of FD-4 across the transcellular route but not across the paracellular route in Caco-2 cell monolayers. And it is indicated that cyanide rather than nitric oxide is involved in dysfunction of the FD-4 efflux system irrespective of conditions such as normal osmolarity or hyperosmolarity.
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Affiliation(s)
- Rie Ohkubo
- Department of Biopharmaceutics, School of Pharmacy, Tokyo University of Pharmacy and Life Science, Japan
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