関連する実験動画
Updated: Jul 16, 2026

09:11
Assays for Validating Histone Acetyltransferase Inhibitors
Published on: August 6, 2020
アズマミドとヒストン脱エチラゼの抑制活性に関する分子洞察
Nakia Maulucci1, Maria Giovanna Chini, Simone Di Micco
1Department of Chemistry, University of Salerno, Via Ponte Don Melillo, 84084 Fisciano, Salerno, Italy.
Journal of the American Chemical Society
|February 22, 2007
まとめ
強力なヒストン脱酸化酵素 (HDAC) 阻害剤であるアズマミドEは,その活性と結合を理解するために,合成変種を介して研究されました. この研究は,がん治療のための新しいHDAC阻害剤の設計に役立ちます.
科学分野:
- 自然製品化学 自然製品化学
- 薬用化学 薬用化学について
- バイオケミストリー バイオケミストリー
背景:
- アズマミドEは,Mycale izuensisからのサイクロテトラペプチドであり,強力な天然ヒストン脱酸化酵素 (HDAC) 阻害剤です.
- HDAC阻害剤の構造-活性関係を理解することは,新しいがん治療薬の開発に不可欠です.
研究 の 目的:
- アズマミドEの立体化学的変異を合成し,評価し,HDAC阻害におけるサイドチェーントポロジーの役割を明らかにする.
- アズマミドとヒストン脱セチラゼ型タンパク質 (HDLP) モデル受容体間の結合相互作用を特定する.
- 異なるヒストン脱酸化酵素 (HDAC) 亜型に対するアズマミドEの同型選択性を調査する.
主な方法:
- アズマミドEの立体化学的変異体の化学合成.
- HDACの抑制活性に関する評価.
- HDLP受容体モデルによる分子モデリングとドッキング研究.
主要な成果:
- 立体化学的変異は,HDACの抑制力に対するサイドチェーントポロジーの影響を確認した.
- アズマミドとHDLPモデル受容体の認識パターンが解明されました.
- アズマミドEは,HDACクラスのサブタイプ全体で前例のない同型選択性を示しました.
結論:
- 受容体結合ポケット内のアズマミド-HDLP相互作用の妥当なモデルが確立されました.
- この研究は,新しいサイクロテトラペプチドベースのHDAC阻害剤の合理的な設計のための枠組みを提供します.
- この発見は,抗腫瘍剤としてのアズマミドの可能性を裏付けている.
関連する概念動画
Spreading of Chromatin Modifications
The histone proteins in the nucleosomes are post-translationally modified (PTM) to increase or decrease access to DNA. The commonly observed PTMs are methylation, acetylation, phosphorylation, and ubiquitination of lysine amino acids in the histone H3 tail region. These histone modifications have specific meaning for the cell. Hence, they are called "histone code". The protein complex involved in histone modification is termed as "reader-writer" complex.
Writers
The writer is an enzyme that can...
Writers
The writer is an enzyme that can...
Histone Modification
The histone proteins have a flexible N-terminal tail extending out from the nucleosome. These histone tails are often subjected to post-translational modifications such as acetylation, methylation, phosphorylation, and ubiquitination. Particular combinations of these modifications form “histone codes” that influence the chromatin folding and tissue-specific gene expression.
Acetylation
The enzyme histone acetyltransferase adds acetyl group to the histones. Another enzyme, histone deacetylase,...
Acetylation
The enzyme histone acetyltransferase adds acetyl group to the histones. Another enzyme, histone deacetylase,...
Histone Modification
The histone proteins have a flexible N-terminal tail extending out from the nucleosome. These histone tails are often subjected to post-translational modifications such as acetylation, methylation, phosphorylation, and ubiquitination. Particular combinations of these modifications form “histone codes” that influence the chromatin folding and tissue-specific gene expression.
Acetylation
The enzyme histone acetyltransferase adds acetyl group to the histones. Another enzyme, histone deacetylase,...
Acetylation
The enzyme histone acetyltransferase adds acetyl group to the histones. Another enzyme, histone deacetylase,...
Eukaryotic Transcription Inhibitors
Certain biochemical processes, such as embryonic development and cell growth regulation, depend on the repression of specific genes. DNA binding proteins known as eukaryotic transcription inhibitors regulate the repression of gene expression in eukaryotes. The presence of these inhibitors at the required location and time in the cell is triggered by the presence of hormones and additional signals from other cells.
Eukaryotic transcription inhibitors usually contain two distinct domains, a DNA...
Eukaryotic transcription inhibitors usually contain two distinct domains, a DNA...
Histone Variants at the Centromere
Histone variants are the histone proteins with structural and sequence variations. These variants may be regarded as “mutant” forms that replace their canonical histone counterparts in the nucleosomes. Specific post-translational modifications on the histone variants enable further chromatin complexity and regulate tissue-specific gene expression. The most common histone variants are from histone H2A, H2B, and linker histone H1 families. However, several variants of histone H3 variants are also...
Inhibitors of Bacterial DNA Synthesis
Bacterial pathogens depend on precise and efficient DNA replication to sustain infection. Two type II topoisomerases—DNA gyrase and topoisomerase IV—are critical to this process, as they resolve DNA supercoiling and unlink chromosomes during replication. Fluoroquinolones, synthetic derivatives of quinolones, exploit this mechanism by stabilizing the transient DNA–enzyme cleavage complex, preventing strand religation, and causing lethal double-strand breaks. These antibiotics are selectively...

