A method for preparing chiral cadmium selenide quantum dots and their application in retinal degeneration

By preparing optimized chiral cadmium selenide quantum dots, the problems of complex preparation and high cost in existing technologies have been solved, enabling effective treatment of retinal degenerative diseases, especially showing significant protective effects against retinal damage caused by high intraocular pressure and oxidative stress.

CN120097287BActive Publication Date: 2026-03-10ZHEJIANG LUOXI MEDICAL TECH CO LTD
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Patent Information

Application Number
CN202510270747.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-03-07
Publication Date
2026-03-10
Estimated Expiration
2045-03-07

AI Technical Summary

Technical Problem

Existing technologies for preparing chiral quantum dots are complex and costly, and their biocompatibility and toxicity issues have not been effectively resolved, with limited efficacy in the treatment of retinal degeneration.

Method used

A sodium selenate solution was prepared using selenium powder and sodium hydroxide. A Cd-D-Cys complex was formed by combining cadmium chloride and the chiral ligand D-cysteine. Cadmium selenide quantum dots were formed by microwave heating and then purified by centrifugation. The preparation parameters were optimized to obtain highly efficient chiral cadmium selenide quantum dots.

Benefits of technology

Chiral cadmium selenide quantum dots exhibit good biocompatibility and have a significant protective effect against retinal damage caused by high intraocular pressure or oxidative stress, improving the survival rate of retinal ganglion cells and alleviating pathological changes.

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Abstract

This invention relates to the field of biomedical technology, specifically proposing a method for preparing chiral cadmium selenide quantum dots and their application in retinal degeneration. By precisely controlling the reaction conditions, highly efficient chiral cadmium selenide quantum dots were successfully synthesized. The chiral cadmium selenide quantum dots of this invention exhibit significant protective effects against retinal damage caused by high intraocular pressure or oxidative stress, effectively improving the survival rate of retinal ganglion cells and alleviating retinal pathological changes. In a rat model, topical ocular administration demonstrated good therapeutic efficacy and biosafety. This invention provides new ideas and methods for the treatment of retinal degeneration and has broad clinical application prospects. Furthermore, the preparation method of these quantum dots and their complexes is simple and low-cost, providing new possibilities for expanding the application of quantum dots in the biomedical field.
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