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Modified-Release Drug Delivery Systems: Stimuli-Activated

Modified-Release Drug Delivery Systems: Stimuli-Activated

Stimuli-activated drug delivery systems are designed to release drugs in response to specific physical, chemical, or biological stimuli. These systems often utilize hydrogels—three-dimensional, hydrophilic polymer networks capable of swelling in aqueous environments and retaining significant fluid volumes. Upon exposure to particular stimuli, these hydrogels undergo structural transitions that allow the embedded drug to be released. Due to this adaptive behavior, such systems are also...

DNA Microarrays

DNA Microarrays

Microarrays are high-throughput and relatively inexpensive assays that can be automated to analyze large quantities of data at a time. They are used in genome-wide studies to compare gene or protein expression under two varied conditions, such as healthy and diseased states. Microarrays consist of glass or silica slides on which probe molecules are covalently attached through surface functionalization. Most commonly, the slides are prepared through the chemisorption of silanes to silica...

Overview of DNA Repair

Overview of DNA Repair

In order to be passed through generations, genomic DNA must be undamaged and error-free. However, every day, DNA in a cell undergoes several thousand to a million damaging events by natural causes and external factors. Ionizing radiation such as UV rays, free radicals produced during cellular respiration, and hydrolytic damage from metabolic reactions can alter the structure of DNA. Damages caused include single-base alteration, base dimerization, chain breaks, and cross-linkage.
Chemically...

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Updated: Feb 22, 2026

DNA-Tethered RNA Polymerase for Programmable In vitro Transcription and Molecular Computation

DNA-Tethered RNA Polymerase for Programmable In vitro Transcription and Molecular Computation

Published on: December 29, 2021

DNA コンピューティングによる小分子放出と活性化

Kunihiko Morihiro¹, Nicholas Ankenbruck¹, Bradley Lukasak¹

¹Department of Chemistry, University of Pittsburgh , Pittsburgh, Pennsylvania 15260, United States.

Journal of the American Chemical Society

|September 26, 2017

まとめ

この要約は機械生成です。

研究者は新しいDNAロジックゲートを開発し小さな分子の出力を生み出し細胞のモニタリングにより良い生物学的インターフェイスを可能にしましたこの進歩は伝統的なDNAコンピューティングの限界を克服しより複雑な生物学的応用への道を開きます

さらに関連する動画

Plasmid-derived DNA Strand Displacement Gates for Implementing Chemical Reaction Networks

Plasmid-derived DNA Strand Displacement Gates for Implementing Chemical Reaction Networks

Published on: November 25, 2015

Genome-wide Mapping of Drug-DNA Interactions in Cells with COSMIC Crosslinking of Small Molecules to Isolate Chromatin

Genome-wide Mapping of Drug-DNA Interactions in Cells with COSMIC Crosslinking of Small Molecules to Isolate Chromatin

Published on: January 20, 2016

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Last Updated: Feb 22, 2026

DNA-Tethered RNA Polymerase for Programmable In vitro Transcription and Molecular Computation

DNA-Tethered RNA Polymerase for Programmable In vitro Transcription and Molecular Computation

Published on: December 29, 2021

Plasmid-derived DNA Strand Displacement Gates for Implementing Chemical Reaction Networks

Plasmid-derived DNA Strand Displacement Gates for Implementing Chemical Reaction Networks

Published on: November 25, 2015

Genome-wide Mapping of Drug-DNA Interactions in Cells with COSMIC Crosslinking of Small Molecules to Isolate Chromatin

Genome-wide Mapping of Drug-DNA Interactions in Cells with COSMIC Crosslinking of Small Molecules to Isolate Chromatin

Published on: January 20, 2016

科学分野:

バイオテクノロジー
分子生物学
合成生物学

背景:

DNAロジックゲートは細胞モニタリングの可能性を秘めているが,通常は限られたオリゴヌクレオチド出力を生み出す.
既存のDNAコンピューティングシステムは,出力フォーマットにより,生物学的システムとのインタフェースで課題に直面しています.

研究の目的:

小分子出力を持つ新しいDNAロジックゲートを設計し,実証する.
DNAベースのコンピューティングデバイスのより効果的な生物学的なインタフェースを可能にします.
複雑なDNA回路を作り特定の生物学的パターンに反応する

主な方法:

小分子フッ素放出と活性化のためにスタウディンガー還元を利用したDNA論理ゲートを開発した.
合成マイクロRNA (miRNA) の入力に反応する AND と OR ロジックゲート.
複合的なパターン認識と同時活性化のための組み立てられたシリーズと複合DNA回路.

主要な成果:

伝統的なオリゴヌクレオチドの出力とは異なり,小さな分子出力を生成するDNAロジックゲートを成功裏に作成しました.
合成miRNAパターンに対する ANDとORゲート機能の実証
特定の3ミRNAパターンに反応する複雑で連続的に接続されたDNA回路を構築した.
独立したDNA回路から同時に小さな分子を放出するマルチプレキシング能力を示した.

結論:

新しいDNAロジックゲートデザインは重要な小分子出力を提供し生物学的互換性を高めます
この進歩は DNA コンピューティングの可能性を複雑な細胞モニタリングと治療用途に拡張します
発達したゲートは容易に複合し,複雑で同時に生物学的シグナリングを可能にします.