Citation: Xianglian Li, Hui Liu, Ailing Yu, Dan Lin, Zhishu Bao, Yuqin Wang, Xingyi Li. Bioinspired self-assembly supramolecular hydrogel for ocular drug delivery[J]. Chinese Chemical Letters, ;2021, 32(12): 3936-3939. doi: 10.1016/j.cclet.2021.03.037 shu

Bioinspired self-assembly supramolecular hydrogel for ocular drug delivery

Institute of Biomedical Engineering, School of Ophthalmology & Optometry, Eye Hospital, Wenzhou Medical University, Wenzhou 325027, China

lixingyi_1984@mail.eye.ac.cn

Received Date: 18 January 2021
Revised Date: 12 March 2021
Accepted Date: 15 March 2021
Available Online: 16 March 2021

Figures(3)

Based on a recent report concerning endogenous agents (i.e., pyridoxal phosphate, adenosine triphosphate, adenosine monophosphate, folinic acid) that modulate the oligomerization of apoptosis-associated speck-like protein (ASC) via the peptide epitope of KKFKLKL, we rationally designed and synthesized a nonapeptide (NapFFKKFKLKL), which can co-assemble with dexamethasone sodium phosphate (Dexp) to generate a NapFFKKFKLKL/Dexp supramolecular hydrogel for ocular drug delivery. The NapFFKKFKLKL/Dexp hydrogel formed instantly after the complexation of NapFFKKFKLKL with Dexp in aqueous solution. The formed supramolecular hydrogels were thoroughly characterized by transmission electron microscopy (TEM), fluorescent spectrum, circular dichroism (CD) spectra and rheology. The peptide concentration significantly affected the in vitro release behavior of Dexp from the supramolecular hydrogel, and the higher peptide concentration resulted in the slower drug release. Following a single intravitreal injection, the proposed NapFFKKFKLKL/Dexp hydrogel displayed good intraocular biocompatibility without having an adverse impact on the retinal architecture and eyesight functions during one month of follow-up. Using an experimental autoimmune uveitis (EAU) rat model, we demonstrated that the resulting NapFFKKFKLKL/Dexp hydrogel had potent capacity to alleviate the intraocular inflammation and retain the morphology of retinal architecture. Overall, the resulting NapFFKKFKLKL/Dexp hydrogel may be a promising drug carrier system to treat various posterior disorders (i.e., uveitis).
- Supramolecular hydrogel,
- Self-assembly,
- Drug delivery,
- Ocular disorder
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