一个可控制的DNA:结构特征和i-motif的先进应用
Qiumei Pu1,2, Xiangde Lai1,2, Yanan Peng3
1NHC Key Laboratory of Tropical Disease Control, School of Tropical Medicine & The Second Affiliated Hospital, Hainan Medical University, Haikou, 571199, China. wuqiang001001@aliyun.com.
The Analyst
|April 4, 2025
概括
曾经被认为是不稳定的i-motif DNA结构,现在在人类基因组中得到了认可,并因其pH响应性特性而在纳米医学中用于诊断和治疗.
科学领域:
- 生物化学 生物化学
- 纳米技术纳米技术
- 基因组学就是基因组学.
背景情况:
- i-motif 是一种由两个平行重复体形成的DNA二级结构,由间接的半质子化细胞因子-细胞因子 (C·C+) 配对稳定.
- 最初被认为在生理pH下不稳定,但在人类基因组调节区域的发现后,其生物相关性被重新评估.
- 它的可逆pH响应性是纳米技术应用的关键.
研究的目的:
- 提供i-motif结构特征,稳定性因素和检测方法的概述.
- 为了总结基于i-motif的细胞应用纳米结构的最新进展.
- 讨论i-motifs在纳米医学中的挑战和未来前景.
主要方法:
- 文献综述专注于结构生物学和纳米技术.
- 对i-motif稳定性和检测研究的分析.
- 在细胞环境中对i-motif纳米结构的最新研究的综合.
主要成果:
- 最近的研究证实了i-motif在中性pH的人类基因组调节区域中的存在.
- I-motif纳米结构显示出生物医学诊断和治疗的前景.
- 基于i-motifs的功能纳米结构已被开发用于细胞水平的应用.
结论:
- I型DNA结构具有生物学相关性,并具有纳米医学独特的特性.
- 对i-motif稳定性和应用的进一步研究可以促进纳米医学的发展.
- 基于I-motif的纳米结构为创新的诊断和治疗策略提供了潜力.
相关概念视频
Combinatorial Gene Control
8.2K
Combinatorial gene control is the synergistic action of several transcriptional factors to regulate the expression of a single gene. The absence of one or more of these factors may lead to a significant difference in the level of gene expression or repression.
The expression of more than 30,000 genes is controlled by approximately 2000-3000 transcription factors. This is possible because a single transcription factor can recognize more than one regulatory sequence. The specificity in gene...
The expression of more than 30,000 genes is controlled by approximately 2000-3000 transcription factors. This is possible because a single transcription factor can recognize more than one regulatory sequence. The specificity in gene...
8.2K
Single-Strand DNA Binding Proteins
13.8K
For successful DNA replication, the unwinding of double-stranded DNA must be accompanied by stabilization and protection of the separated single strands of the DNA. This crucial task is performed by single-strand DNA-binding (SSB) proteins. They bind to the DNA in a sequence-independent manner, which means that the nitrogenous bases of the DNA need not be present in a specific order for binding of SSB proteins to it. The binding of SSB proteins straightens single-stranded DNA (ssDNA) and makes...
13.8K
DNA as a Genetic Template
6.7K
6.7K
Chromatin Immunoprecipitation- ChIP
10.9K
Chromatin immunoprecipitation, or ChIP, is an antibody-based technique used to identify sites on DNA that bind to transcription factors of interest or histone proteins. It also helps determine the type of histone modifications such as acetylation, phosphorylation, or methylation.
Types of ChIP
ChIP can be divided into two types - X-ChIP and N-ChIP. X-ChIP involves in vivo cross-linking of histones and regulatory proteins to DNA, fragmenting the DNA by sonication, and isolating the protein-DNA...
Types of ChIP
ChIP can be divided into two types - X-ChIP and N-ChIP. X-ChIP involves in vivo cross-linking of histones and regulatory proteins to DNA, fragmenting the DNA by sonication, and isolating the protein-DNA...
10.9K
Chromatin Modification in iPS Cells
1.6K
Chromatin modification alters gene expression; therefore, scientists can add histone-modifying enzymes, histone variants, and chromatin remodeling complexes to somatic cells to aid reprogramming into pluripotent stem (iPS) cells.
Compact chromatin makes reprogramming difficult. Enzymes, such as histone demethylases and acetyltransferases, are often added during reprogramming to loosen the chromatin, making the DNA more accessible to transcription factors. Molecules that inhibit histone...
Compact chromatin makes reprogramming difficult. Enzymes, such as histone demethylases and acetyltransferases, are often added during reprogramming to loosen the chromatin, making the DNA more accessible to transcription factors. Molecules that inhibit histone...
1.6K
Conservative Site-specific Recombination and Phase Variation
5.9K
Because the DNA segments are cut and reorganized in a direction-specific manner, site-specific recombination has emerged as an efficient genetic engineering technique. Flippase and Cyclization recombinases or Flp and Cre, respectively, are two members of the tyrosine recombinase family derived from bacteriophages, that are used to mediate site-specific DNA insertions, deletions, and targeted expression of proteins in mammalian cell lines.
The recognition sites for Cre recombinase called LoxP...
The recognition sites for Cre recombinase called LoxP...
5.9K


