Application of a star-shaped glial cell KCNQ3 siRNA vesicle in the preparation of a drug for treating, preventing or relieving stroke

By targeting and delivering interfering RNA via KCNQ3 siRNA vesicles in astrocytes, knocking down or eliminating KCNQ3 channels within astrocytes, the problem of insufficient neuronal regulation in current stroke treatments has been solved, achieving the effects of reducing cerebral ischemia area and improving motor cognitive function.

CN122398845APending Publication Date: 2026-07-17HEBEI MEDICAL UNIVERSITY

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HEBEI MEDICAL UNIVERSITY
Filing Date
2026-04-21
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Current stroke treatments are insufficient in regulating neuronal excitability, and systemic administration may affect other organ systems. No studies have explored regulatory strategies for KCNQ3 channels in astrocytes to block secondary damage.

Method used

Using KCNQ3 siRNA vesicles from astrocytes, drugs for the treatment, prevention, or relief of stroke can be prepared by delivering interfering RNA to knock down or eliminate KCNQ3 channels in astrocytes. The vesicles can penetrate the blood-brain barrier and specifically target astrocytes.

Benefits of technology

It significantly reduced the area of ​​cerebral ischemia in model mice and improved the motor and cognitive functions of ischemic mice, providing a basis for preclinical research and laying an important foundation for the preparation of drugs to treat stroke.

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Abstract

本发明属于生物药品制造技术领域,提出了一种敲低或敲除或沉默星形胶质细胞内KCNQ3通道的试剂在制备治疗、预防或缓解脑卒中药物中的应用,具体的,提出了一种星形胶质细胞KCNQ3siRNA囊泡在制备治疗、预防或缓解脑卒中药物中的应用,经实验验证,星形胶质细胞KCNQ3siRNA囊泡能够减少模型小鼠脑缺血面积,并且连续星形胶质细胞KCNQ3siRNA囊泡给药可显著改善缺血小鼠的运动功能及认知功能,证明了星形胶质细胞KCNQ3siRNA囊泡在制备缺血性脑卒中治疗、预防或缓解药物中具有重要的实用意义和市场价值。
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