3D マクロサイクリック構造 強化された遺伝子配送: ステップ成長ポリメリゼーションによる多循環型ポリアミノエステル
Yinghao Li1,2, Xianqing Wang2, Zhonglei He1,2
1Research and Clinical Translation Center of Gene Medicine and Tissue Engineering, School of Public Health, Anhui University of Science and Technology, Huainan 232001, China.
Journal of the American Chemical Society
|July 25, 2023
まとめ
新しい多循環型ポリアミノエステル (CPAE) が合成された. マクロサイクルCPAE (MCPAE) は,遺伝子編集療法における遺伝子配送とCRISPRプラズミド配送を著しく強化した.
科学分野:
- ポリマー化学
- バイオマテリアル科学
- 遺伝子療法
背景:
- ポリマートポロジーは遺伝子配送の効率に大きく影響します
- 遺伝子配送ベクトルとして新しいポリマー構造が必要である.
研究 の 目的:
- 新しい多循環型ポリアミノエステル (CPAE) を合成し,特徴づけること.
- 遺伝子配送効率に対するポリマートポロジの影響を調査する.
- CRISPRによる遺伝子編集のためのMCPAEベクトルの性能を評価する.
主な方法:
- CPAE合成のためのステップ成長ポリメリゼーション.
- 異なるリングトポロジーを得るためのサイクル制御.
- トランスゲン発現を測定する in vitro 感染検査
- 遺伝子編集のためのCRISPRプラズミドの配送
主要な成果:
- 異なるリングサイズとトポロジーを持つ3種類のCPAEを合成しました.
- マクロリングのCPAEは,枝分かれしたポリマーと比較して,トランスゲン発現が著しく増加した.
- 遺伝子編集療法用のCRISPRプラズミドを効率的に提供した.
結論:
- マルチサイクルポリマーのトポロジーは,特にマクロサイクル構造は,遺伝子配送を強化することができます.
- MCPAEは遺伝子療法の適用に有望なベクトルクラスです.
- MCPAEベクトルは,遺伝子編集のためのCRISPRコンポーネントを供給する有効性を示しました.
関連する概念動画
Step-Growth Polymerization: Overview
3.5K
Step-growth or condensation polymerization is a stepwise reaction of bi or multifunctional monomers to form long-chain polymers. As all the monomers are reactive, most of the monomers are consumed at the early stages of the reaction to form small chains of reactive oligomers, which then combine to form long polymer chains in the late stages. Hence, the reaction has to proceed for a long time to achieve high molecular weight polymers.
Many natural and synthetic polymers are produced by...
Many natural and synthetic polymers are produced by...
3.5K
Types of Step-Growth Polymers: Polyesters
2.3K
The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the...
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the...
2.3K
Molecular Weight of Step-Growth Polymers
2.2K
Step growth polymerization involves bi or multifunctional monomers. Bifunctional monomers react to form linear step growth polymers, whereas multifunctional monomers react to form non-linear or branched polymers.
As the step-growth polymerization involves step-wise condensation of monomers, the molecular weight also builds up eventually. Consequently, high molecular weight polymers are obtained at the late stages of the polymerization, where 99% of monomers have been consumed.
The extent of the...
As the step-growth polymerization involves step-wise condensation of monomers, the molecular weight also builds up eventually. Consequently, high molecular weight polymers are obtained at the late stages of the polymerization, where 99% of monomers have been consumed.
The extent of the...
2.2K
Cationic Chain-Growth Polymerization: Mechanism
2.4K
The cationic polymerization mechanism consists of three steps: initiation, propagation, and termination. In the initiation step of the polymerization process, the π bond of a monomer gets protonated by the Lewis acid catalyst, which is formed from boron trifluoride and water. The protonation of the π bond generates a carbocation stabilized by the electron‐donating group. In the propagation step, the π bond of the second monomer acts as a nucleophile and attacks the...
2.4K
Anionic Chain-Growth Polymerization: Overview
2.1K
The polymerization process that involves carbanion as an intermediate is called anionic polymerization. It is also a type of addition or chain-growth polymerization. Anionic polymerization gets initiated by a strong nucleophile such as an organolithium or a Grignard reagent. The most commonly used initiator for anionic polymerization is butyl lithium. Monomers involved in anionic polymerization must possess a vinyl group bonded to one or two electron-withdrawing groups. For instance,...
2.1K
Anionic Chain-Growth Polymerization: Mechanism
2.1K
The mechanism for anionic chain-growth polymerization involves initiation, propagation, and termination steps. In the initiation step, a nucleophilic anion, such as butyl lithium, initiates the polymerization process by attacking the π bond of the vinylic monomer. As a result, a carbanion, stabilized by the electron‐withdrawing group, is generated. The resulting carbanion acts as a Michael donor in the propagation step and attacks the second vinylic monomer, which acts as a Michael...
2.1K


