光热血聚变:一种以光驱动的技术,用于针对性溶解瘤
Basanta Acharya1, Caylie A McGlade2, Haifeng Yin3
1Division of Chemical Biology and Medicinal Chemistry, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, United States.
概括
工程红细胞提供光激活的组织等离子体激活剂 (tPA) 来溶解血块. 这种向治疗对治疗血栓形成有希望,剂量减少,安全性提高.
科学领域:
- 生物医学工程 生物医学工程
- 血液学 血液学 血液学
- 药理学 药理学是指药理学的学科.
背景情况:
- 遮蔽性血栓导致全球显著的死亡率和残疾.
- 目前使用组织等离子体激活剂 (tPA) 的药理学凝块溶解具有有限的疗效和安全性问题.
- 需要有针对性和更安全的血栓溶解策略.
研究的目的:
- 开发光敏的工程红细胞 (tPA-RBCs) 用于向血栓溶解.
- 为了证明光控制的tPA从工程RBCs释放.
- 为了评估tPA-RBCs在溶解血液凝块的有效性ex vivo和恢复血液流动 in vivo.
主要方法:
- 工程红细胞封装和可控释放组织等离子素激活剂 (tPA).
- 利用光作为一个外部触发器,从工程RBC释放tPA.
- 评估出血栓退化ex vivo和恢复血液流动在一个封闭的小鼠动脉模型 in vivo.
主要成果:
- 从工程RBC中成功释放tPA的光诱导释放.
- 血液凝块的退化被证明使用tPA载红细胞.
- 与传统治疗相比,在被堵塞的小鼠动脉中恢复血流是通过显著降低tPA剂量来实现的.
结论:
- 响应光的tPA装载的红细胞提供了针对性治疗血栓溶解的方法.
- 这种工程细胞疗法可以控制药物释放,并提高治疗疗效.
- 开发的技术为遮蔽性血栓提供了潜在的更安全,更有效的治疗策略.
相关概念视频
02:57Targeted Cancer Therapies
7.5K
The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
There are several types of targeted therapies against...
There are several types of targeted therapies against...
7.5K
01:30Anticoagulant Drugs: Low-Molecular-Weight Heparins
623
Hemostasis is a crucial process that prevents excessive blood loss from damaged blood vessels. It involves various mechanisms such as vasoconstriction, platelet adhesion and activation, and fibrin formation. The importance of each mechanism depends on the type of vessel injury. In contrast, thrombosis is the abnormal formation of a blood clot within the blood vessels, leading to potential complications if the clot obstructs blood flow. Thrombosis can be caused by increased coagulability of the...
623
01:16Clot Retraction and Fibrinolysis
4.1K
After a fibrin clot is formed, the next step is clot retraction, a vital process facilitated by platelet contractile proteins, such as actin and myosin. These proteins pull the fibrin strands closer together and condense the clot. This action reduces the size of the clot, creating a smaller, denser structure that effectively seals off the damaged vessel. Clot retraction consolidates the clot and helps with wound healing by bringing the edges of the damaged blood vessel closer together.
4.1K