人类-N-寡核酸 (N1/N9-C1'甲基桥型寡核酸):具有左手螺旋性的核酸
Kouichi Ishiyama1, Gerald E Smyth, Toshihiro Ueda
1Discovery Research Laboratories, Nippon Shinyaku Co. Ltd, 3-14-1 Sakura, Tsukuba City, Ibaraki 305-0003, Japan. k.ishiyama@po.nippon-shinyaku.co.jp
Journal of the American Chemical Society
|June 17, 2004
概括
新的合成寡核酸,称为homo-N-oligonucleotides,可以与自然的DNA/RNA形成稳定的重复. 这些新型结构表现出独特的左侧螺旋形状和增强的核酶抵抗性.
科学领域:
- 合成化学 合成化学
- 核酸化学的核酸化学
- 生物物理化学 生物物理化学
背景情况:
- 寡核酸在分子生物学和治疗学中至关重要.
- 对寡核酸骨干的修改可以改变它们的特性.
- 了解结构和稳定性变化是应用程序的关键.
研究的目的:
- 用甲桥 (homo-N-oligonucleotides) 合成和表征新型的寡核酸.
- 研究这些改性寡核酸的结构和构造性质.
- 为了评估homo-N-oligonucleotides的稳定性和核酶抵抗性.
主要方法:
- 同类-N-oligonucleotides的化学合成.
- 化曲线分析用于双重稳定性.
- 循环二重化 (CD) 谱学用于结构形状.
- 核磁共振 (NMR) 光谱 (NOESY) 用于结构阐明.
- 原子力显微镜 (AFM) 用于 dsDNA 构造.
- 酶性消化试验 (固酶,核酶S1) 的稳定性.
主要成果:
- 已经成功合成了Homo-N-oligonucleotides.
- 化曲线证实了与补充性同型和自然寡合体的交叉配对.
- CD和NMR研究表明,同类型二聚体和单/双链寡聚体的左手堆叠构造.
- AFM 发现了 homo 类型 dsDNA 的左手螺旋形状.
- 双重复合与天然核酸形成了类似RNA的右手螺旋体.
- 人类-N-oligonucleotides 显示出对酶性消化具有很高的抗性.
结论:
- Homo-N-oligonucleotides代表了一种新型的改性核酸类.
- 这些化合物具有独特的结构 (左手螺旋) 和稳定性 (抗核酶) 特性.
- 它们与天然核酸混合的能力为生物技术应用开辟了潜在的途径.
相关概念视频
Nucleic acids
Nucleic acids are the most important macromolecules for the continuity of life. They carry the cell's genetic blueprint and carry instructions for its functioning.
DNA and RNA
The two main types of nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). DNA is the genetic material in all living organisms, ranging from single-celled bacteria to multicellular mammals. It is in the nucleus of eukaryotes and in the organelles, chloroplasts, and mitochondria. In prokaryotes, the...
DNA and RNA
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Nucleic Acids
Nucleic acids are the most important macromolecules for the continuity of life. They carry the cell's genetic blueprint and carry instructions for its functioning.
DNA and RNA
The two main types of nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). DNA is the genetic material in all living organisms, ranging from single-celled bacteria to multicellular mammals. It is in the nucleus of eukaryotes and in the organelles, chloroplasts, and mitochondria. In prokaryotes, the...
DNA and RNA
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Nucleic acids are the most important macromolecules for the continuity of life. They carry the cell's genetic blueprint and carry instructions for its functioning.
DNA and RNA
The two main types of nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). DNA is the genetic material in all living organisms, ranging from single-celled bacteria to multicellular mammals. It is in the nucleus of eukaryotes and in the organelles, chloroplasts, and mitochondria. In prokaryotes, the...
DNA and RNA
The two main types of nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). DNA is the genetic material in all living organisms, ranging from single-celled bacteria to multicellular mammals. It is in the nucleus of eukaryotes and in the organelles, chloroplasts, and mitochondria. In prokaryotes, the...
Nucleic Acids
Nucleic acids are the most important macromolecules for the continuity of life. They carry the cell's genetic blueprint and carry instructions for its functioning.
DNA and RNA
The two main types of nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). DNA is the genetic material in all living organisms, ranging from single-celled bacteria to multicellular mammals. It is in the nucleus of eukaryotes and in the organelles, chloroplasts, and mitochondria. In prokaryotes, the...
DNA and RNA
The two main types of nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). DNA is the genetic material in all living organisms, ranging from single-celled bacteria to multicellular mammals. It is in the nucleus of eukaryotes and in the organelles, chloroplasts, and mitochondria. In prokaryotes, the...
Nucleic Acids and Nucleotides
Nucleic acids are the most important macromolecules for the continuity of life. They carry the cell's genetic blueprint and have instructions for its functioning. The two main types of nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA).
Deoxyribonucleic Acid (DNA)
DNA is the genetic material in all living organisms, ranging from single-celled bacteria to multicellular mammals. It is in the nucleus of eukaryotes and the organelles such as chloroplasts and mitochondria. In...
Deoxyribonucleic Acid (DNA)
DNA is the genetic material in all living organisms, ranging from single-celled bacteria to multicellular mammals. It is in the nucleus of eukaryotes and the organelles such as chloroplasts and mitochondria. In...
Nucleic Acid Structure
The pentose sugar in DNA is deoxyribose, while in RNA the pentose sugar is ribose. The difference between the sugars is the presence of the hydroxyl group on the ribose's second carbon and a hydrogen on the deoxyribose's second carbon. The phosphate residue attaches to the hydroxyl group of the 5′ carbon of one sugar and the hydroxyl group of the 3′ carbon of the sugar of the next nucleotide, which forms a 5′ to 3′ phosphodiester linkage.
DNA Structure
DNA has a double-helix structure. The...
DNA Structure
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