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Site-Targeted Drug Delivery Systems: Polymeric Carriers01:24

Site-Targeted Drug Delivery Systems: Polymeric Carriers

Polymeric carriers enhance targeted drug delivery by increasing efficacy while minimizing off-target effects. These carriers comprise a biodegradable polymeric backbone integrated with functional elements that enable targeting, improve physicochemical properties, and regulate drug release.Targeting MechanismsThe targeting ability of polymeric carriers is mediated by a homing device, which is a molecular recognition component designed to selectively bind to specific tissues or cells. Monoclonal...

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相关实验视频

Updated: Jun 18, 2026

Evaluation of Polymeric Gene Delivery Nanoparticles by Nanoparticle Tracking Analysis and High-throughput Flow Cytometry
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作为潜在的基因传递载体的新型多响应高分支多电解质多复合体.

Dimitrios Selianitis1, Hector Katifelis2, Maria Gazouli2

  • 1Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece.

Pharmaceutics
|June 28, 2023
PubMed
概括

这项研究表明,pH和热响应的高分支共聚物有效地与DNA结合,形成纳米级的多重复合体. 这些无毒的多复合体表现出极好的稳定性和基因传递应用的潜力.

关键词:
在MTT测试中使用MTT测试.基因传递 基因传递 基因传递超分支的多电解质共聚物.pH/热敏的温度感应多重复合体是多重复合体.简短的 DNA DNA 短的 DNA

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科学领域:

  • 聚合物化学 聚合物化学
  • 生物材料科学 生物材料科学
  • 纳米技术 纳米技术

背景情况:

  • 超分支的多电解质共聚合物,特别是聚甲基酸甲基酸甲基酸甲基酸甲基酸甲基酸甲基酸甲基酸甲基酸甲基酸甲基酸甲基酸甲基酸甲基酸 (P(OEGMA-co-DIPAEMA),是通过可逆添加碎片化链转移 (RAFT) 聚合合成的.
  • 这些共聚物被设计成具有不同的化学成分,以研究它们与短线性DNA分子的复杂化.

研究的目的:

  • 探索具有线性DNA的P ((OEGMA-co-DIPAEMA) 超分支共聚合物的复杂化行为.
  • 分析由共聚合物组成,N/P比率和环境刺激 (pH,温度,离子强度) 影响的DNA多重复的形成和特性.
  • 评估这些多重复的基因传递应用的潜力,包括它们的稳定性和细胞毒性.

主要方法:

  • 可逆添加碎片化链转移 (RAFT) 聚合用于共聚合物合成.
  • 动态和电泳光散射 (DLS,ELS) 用于描述多重复的尺寸和电荷.
  • 光光谱 (FS) 用于研究复合动态.
  • 在HEK 293细胞系上进行了体外细胞毒性测定.

主要成果:

  • P ((OEGMA-co-DIPAEMA) 超分支共聚合物成功地在不同的N/P比率上形成了纳米级DNA复合体.
  • 多重复性特征 (质量,尺寸) 通过共聚合物疏水性和N/P比率进行调制.
  • 多复合体在血清蛋白质的存在下表现出极好的稳定性.
  • 实验室研究表明,在HEK 293细胞上,多重复合体具有足够的非毒性.

结论:

  • 合成的多响应超分支共聚合物在形成稳定的纳米级DNA多重复合物方面是有效的.
  • 这些多复合体在pH值,温度和离子强度的反应中表现出可调节的特性.
  • 低细胞毒性和优良的稳定性表明这些多重复体在基因传递和其他生物医学应用中具有显著的潜力.