Abstract
Imatinib (IMB) is a type of tyrosine kinase inhibitor with great application potential for inhibiting corneal neovascularization (CNV), but its poor water solubility limits its application in eye disease treatment. In this study, novel IMB@glycymicelles entrapped in hydrogel (called IMB@glycymicelle-hydrogel) were prepared, characterized, and evaluated for their therapeutic effects on corneal alkali burn in mice. Imatinib could be successfully loaded in glycymicelles using glycyrrhizin as a nanocarrier with an optimized weight ratio of IMB:nanocarrier. The apparent solubility of IMB was significantly improved from 61.69 ± 5.55 μg/mL to bare IMB to 359,967.62 ± 20,059.42 μg/mL to IMB@glycymicelles. Then, the IMB@glycymicelles were entrapped in hydrogel fabricated with hydroxypropyl methylcellulose and sodium hyaluronate (HA) to prolong retention time on the ocular surface. Rabbit eye tolerance tests showed that IMB@glycymicelle-hydrogel possessed good ocular safety profiles. In a mouse model of corneal alkali burns, the topical administration of IMB@glycymicelle-hydrogel showed strong efficacy by prompting corneal wound healing, recovering corneal sensitivity, relieving corneal opacities, and inhibiting CNV, and these efficacy evaluation parameters were better than those of the positive drug HA. Overall, these results demonstrated that IMB@glycymicelle-hydrogel may be a promising candidate for the effective treatment of alkali ocular damage.
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Funding
This research was supported by the Natural Science Foundation of Shandong Province (Grant No. ZR2023MH343), and the Medicine Science and Technology Development Program of Shandong Province (Grant No. 202107020108).
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Yanan Wang: Investigation, Methodology, Validation, Writing—original draft. Shaohua Shi: Investigation, Methodology. Ling Zhang: Investigation, Methodology. Songtao Wang: Investigation, Methodology. Hongqing Qin: Investigation, Methodology. Yanjun Wei: Investigation, Methodology. Xianggen Wu: Conceptualization, Funding acquisition. Mengmeng Zhang: Conceptualization, Funding acquisition, Project administration, Resources, Writing—review & editing.
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Male C57BL/6 mice (eight weeks old) were taken from Jinan Pengyue Experimental Animal Breeding Co., Ltd. (Jinan, China), and New Zealand white rabbits were procured from Qingdao Kangda Foodstuffs Co., Ltd. (Qingdao, China). Animal care and the procedures used were in accordance with the Guide for the Care and Use of Laboratory Animals. This animal experiment was conducted under a protocol approved by the Ethics Committee for Animal Experimentation of Qingdao University of Science and Technology (approval document No. 2022–1116, Qingdao, China).
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Wang, Y., Shi, S., Zhang, L. et al. Imatinib@glycymicelles entrapped in hydrogel: preparation, characterization, and therapeutic effect on corneal alkali burn in mice. Drug Deliv. and Transl. Res. (2024). https://doi.org/10.1007/s13346-024-01570-5
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DOI: https://doi.org/10.1007/s13346-024-01570-5