Use of deinococcus geothermalis in preparation of medicaments for alleviating or treating mucosal lesions

By using geothermal radiation-resistant cocci and their modified strains, especially the hutH-OE engineered strain, the problem of prevention and treatment of mucosal injury has been solved. By colonizing the mucosal tissue and secreting trans-uric acid, the radiation protection ability of the mucosa is enhanced, thus achieving effective treatment and prevention of radiation-induced mucosal injury.

CN122398865APending Publication Date: 2026-07-17FOURTH MILITARY MEDICAL UNIVERSITY

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
FOURTH MILITARY MEDICAL UNIVERSITY
Filing Date
2026-04-22
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies lack effective methods to proactively enhance the resistance of mucous membranes before or in the early stages of radiation exposure, and cannot effectively prevent or alleviate radiation-induced mucosal damage, especially in protecting the integrity of mucosal tissues before or in the early stages of radiation exposure.

Method used

By using Deinococcus geothermalis and its metabolite trans-uruconic acid, hutH-OE engineered bacteria were obtained through genetic engineering. This enhanced the radiation protection ability of the mucosa. The colonization of the bacteria in the mucosal tissue and the continuous secretion of trans-uruconic acid by its metabolites under radiation conditions enhanced the epithelial barrier function and DNA damage repair ability.

Benefits of technology

Geothermal radiation-resistant cocci and their modified strains significantly reduce mucosal inflammation before and after radiation, protect the integrity of mucosal structure, improve symptoms of mucosal damage, and provide rapid and sustained therapeutic and preventive effects, which are superior to existing drugs.

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Abstract

本发明属于生物医药技术领域,具体涉及一种地热耐辐射球菌在制备缓解或治疗黏膜损伤的药物中的应用。本发明通过实验发现地热耐辐射球菌的代谢产物反式尿刊酸通过与上皮细胞中的桥粒斑蛋白结合并抑制其泛素化降解,协同增强了其上皮屏障与DNA损伤修复功能。基于此,本发明构建了能够原位、持续高产trans‑UCA的工程化地热耐辐射球菌,并在动物模型中验证了其RIMI防护效果,揭示了耐辐射地热耐辐射球菌与宿主细胞协同抵抗放射性损伤的互利共生关系,为辐射损伤的主动调控策略研究提供了全新思路。
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