橄碳酸盐分子载体:基于寡合化的合成和细胞透研究
Christina B Cooley1, Brian M Trantow, Fredrik Nederberg
1Department of Chemistry, Stanford University, Stanford, California 94305-5080, USA.
Journal of the American Chemical Society
|October 29, 2009
概括
研究人员使用一根橄碳酸盐骨干开发了新的富含guanidinium的分子转运器. 这些载体有效地将分子输送到细胞中,证明了药物输送应用的潜力.
科学领域:
- 生物材料科学 生物材料科学
- 有机化学 有机化学
- 纳米技术纳米技术
背景情况:
- 富含guanidinium的化合物以它们与生物系统相互作用的能力而闻名.
- 开发高效的分子转运器对于有针对性的药物输送至关重要.
- 需要新的骨干结构来改善传送器属性.
研究的目的:
- 为了描述一种富含guanidinium的新型分子转运器家族.
- 为了研究它们的组装和细胞吸收能力.
- 为了确认它们在细胞内药物输送方面的潜力.
主要方法:
- 合成富含guanidinium的橄碳酸盐运输体,具有1.7侧链间距.
- 快速结合组装的一步寡合化策略.
- 流细胞计和光显微镜用于细胞进入评估.
- 路西弗林输送和酶循环试验,以确认药物输送功能.
主要成果:
- 一个新型的guanidinium丰富的分子转运器家族与一根橄碳酸盐骨干成功合成.
- 运输器通过一阶段的寡合化过程演示了快速,长度独立的组装.
- 使用流式细胞计和光显微镜证实了出色的细胞进入.
- 顺利的细胞内输送和 luciferin 的酶处理验证了它们的药物输送功能.
结论:
- 新开发的富含guanidinium的橄碳酸盐输送器为分子合体组装提供了一个多功能平台.
- 这些载体表现出高效的细胞吸收和功能性的细胞内传递能力.
- 这项工作在分子载体领域为潜在的治疗应用带来了有前途的进展.
相关概念视频
The Significance of Membrane Transport
The transport of solutes across the cell membrane is essential for metabolic processes, like maintaining cell size and volume, generating the action potential, exchanging nutrients and gases, etc. Membrane transport can be either passive or active. It can be simple diffusion, facilitated, or mediated transport aided by transport proteins such as transporters and channels.
Transporters facilitate either an active or passive movement of solutes. They can allow a single-molecule transport down its...
Transporters facilitate either an active or passive movement of solutes. They can allow a single-molecule transport down its...
Chemistry of the Cell
The cell is chemically composed of water, organic molecules and inorganic ions.
Water
The polarity of the water molecule and its resulting hydrogen bonding makes water a unique substance with special properties that are intimately tied to the processes of life. Life originally evolved in an aqueous environment, and most of an organism’s cellular chemistry and metabolism occur inside the aqueous contents of the cell’s cytoplasm. Special properties of water are its high heat capacity and heat of...
Water
The polarity of the water molecule and its resulting hydrogen bonding makes water a unique substance with special properties that are intimately tied to the processes of life. Life originally evolved in an aqueous environment, and most of an organism’s cellular chemistry and metabolism occur inside the aqueous contents of the cell’s cytoplasm. Special properties of water are its high heat capacity and heat of...
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...
Pore Transport and Ion-Pair Transport
Pore transport and ion-pair formation are critical mechanisms for the absorption and distribution of drugs in the body.
Pore transport, also known as convective transport, is a process where small molecules like urea, water, and sugars rapidly cross cell membranes as though there were channels or pores in the membrane. Although direct microscopic evidence is limited but the concept of pores or channels is widely accepted based on physiological evidence. Despite the lack of direct microscopic...
Pore transport, also known as convective transport, is a process where small molecules like urea, water, and sugars rapidly cross cell membranes as though there were channels or pores in the membrane. Although direct microscopic evidence is limited but the concept of pores or channels is widely accepted based on physiological evidence. Despite the lack of direct microscopic...
Primary Active Transport
In contrast to passive transport, active transport involves a substance being moved through membranes in a direction against its concentration or electrochemical gradient. There are two types of active transport: primary active transport and secondary active transport. Primary active transport utilizes chemical energy from ATP to drive protein pumps embedded in the cell membrane. With energy from ATP, the pumps transport ions against their electrochemical gradients—a direction they would not...
Membrane Transporters
Transporters are essential membrane transport proteins with functions related to cell nutrition, homeostasis, communication, etc. Approximately 7% of all genes in the human genome code for transporters or transporter-related proteins.
Transporters are mainly composed of alpha-helices, built from bundles of ten or more helices traversing the plasma membrane. The solute-binding sites are located midway, where some of the helices are broken or distorted, making space for the binding site through...
Transporters are mainly composed of alpha-helices, built from bundles of ten or more helices traversing the plasma membrane. The solute-binding sites are located midway, where some of the helices are broken or distorted, making space for the binding site through...


