用环境敏感的核酸探针对DNA寡核酸的模板独立的酶功能化,使用终端脱氧核酸转移酶
Pulak Ghosh1, Apeksha A Phadte1, Bindu Bhojappa2
1Department of Chemistry, Indian Institute of Science Education and Research (IISER), Pune, Dr. Homi Bhabha Road, Pune 411008, India.
Nucleic acids research
|April 2, 2025
概括
研究人员开发了新的光探针来研究终端脱氧核酸转移酶 (TdT) 活性. 这些探针可以实时监测TdT,帮助癌症诊断和药物发现.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 化学生物学 化学生物学
背景情况:
- 终端脱核样转移酶 (TdT) 作为癌症标志物具有新兴的生物技术应用和临床潜力.
- 研究TdT的过程性,基质相互作用和抑制需要多功能探针系统.
- 目前的方法可能缺乏全面TdT分析所需的灵敏度或实时监控能力.
研究的目的:
- 开发和应用环境敏感的光2'-脱氧核酸探针,用于研究TdT.
- 建立一个实时光平台,用于监测TdT活动和识别抑制剂.
- 研究核酸基质上的化学修饰如何影响TdT的识别和结合.
主要方法:
- 在2'-deoxyuridine的C5位置合成2'-deoxynucleotide探针,其功能与各种异环 (selenophene, benzothiophene, benzofuran, fluorobenzofuran) 在2'-deoxyuridine的C5位置.
- 利用TdT活性将这些改性核酸纳入DNA寡核酸中.
- 开发一个实时光平台来监测酶活性和抑制剂查.
主要成果:
- 修改后的核酸作为TdT的基质,具有不同的合并效率,受到异环体积和活性部位内的相互作用的影响.
- 经过福修饰的dUTP表现出极好的响应能力,使灵敏光测试的设计成为可能.
- 开发的平台成功估计了TdT活性,并检测了核酸和非核酸抑制剂.
结论:
- 开发的光探头为研究TdT提供了一个多功能系统.
- 这种方法推进了基于TdT的功能化,诊断和治疗策略.
- 这些发现提供了有关TdT基质识别的结构-活动关系的见解.
相关概念视频
Labeling DNA Probes
8.1K
DNA probes are fragments of DNA labeled with a reporter tag to enable their detection or purification. The resulting labeled DNA probes can then hybridize to target nucleic acid sequences through complementary base-pairing, and may be used to recover or identify these regions.
Radioisotopes, fluorophores, or small molecule binding partners like biotin or digoxigenin, are the most widely used reporter tags for labeling DNA probes. These labels can be attached to the probe DNA molecule via...
Radioisotopes, fluorophores, or small molecule binding partners like biotin or digoxigenin, are the most widely used reporter tags for labeling DNA probes. These labels can be attached to the probe DNA molecule via...
8.1K
In-situ Hybridization
9.1K
In situ hybridization (ISH) is a technique used to detect and localize specific DNA or RNA molecules in cells, tissue, or tissue sections using a labeled probe. The technique was first used in 1969 for the investigation of nucleic acids. It is currently an essential tool in scientific research and clinical settings, especially for diagnostic purposes.
Types of probes and labels
A probe is a complementary strand of DNA or RNA that binds to corresponding nucleotide sequences in a cell. Many...
Types of probes and labels
A probe is a complementary strand of DNA or RNA that binds to corresponding nucleotide sequences in a cell. Many...
9.1K


