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一个纳米囊系统通过抑制与年龄相关的血管生成缺陷和葡萄脂代谢障碍来对抗衰老

Bo Li^1,2, Qiang Zhang³, Jiahui Cheng¹

¹Department of Radiology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, No. 160, Pujian Road, Pudong District, Shanghai 200127, China.

|August 1, 2024

概括

一种新的纳米囊系统 (PCBP) 通过向衰老的内皮细胞,有效地逆转血管衰老. 这种治疗改善了老年小鼠的寿命和代谢健康,为与年龄相关的功能障碍提供了有希望的干预措施.

科学领域:

生物医学工程生物医学工程
老年学是一门学科.
纳米医学是一种纳米医学.

背景情况:

血管衰老的特征是血管生成受损和内皮细胞中代谢失调.
衰老的血管内皮细胞 (VECs) 通过衰老相关的分泌表型 (SASP) 和炎症促进衰老.
目前的治疗方法缺乏针对衰老的VEC异常的有针对性的方法.

研究的目的:

开发和评估一种用于治疗血管衰老的新型纳米异构结构囊系统 (PCBP).
研究PCBP对老年小鼠的治疗作用,重点关注VEC功能障碍和代谢障碍.

主要方法:

一个Pd/hCeO2-BMS309403@血小板膜 (PCBP) 纳米异构囊系统的构建.
用脂肪酸结合蛋白4 (FABP4) 抑制剂加载PCBP,并通过血小板膜进行修改.
向老年小鼠注射PCBP,并评估其对寿命,器官健康,SASP,炎症和新陈代谢的影响.

主要成果:

在老年小鼠中,PCBP表现出极好的生物相容性和器官维护.
循环尾静脉注射PCBP延长了寿命,改善了SASP,炎症和代谢障碍.
在衰老的VEC中,PCBP激活了VEGF信号和糖解,抑制了FABP4,并恢复了新血管和代谢平衡.

结论:

该PCBP纳米囊系统显示了对抗衰老引起的血管功能障碍的显著治疗潜力.
PCBP为针对衰老的VEC和相关的与年龄有关的疾病的干预提供了一个有希望的策略.

关键词:

在 SASP 找 SASP 衰老的衰老衰老的衰老血管新生是因为血管新生.葡萄糖脂类的新陈代谢不同结构的异构结构.

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