FRET調節マルチハイブリッドナノ粒子は,光度均等化された単波長バーコード化
Chi Chen1, Ben Corry2, Liang Huang3
1NanoBioPhotonics (nanofret.com), Institute for Integrative Biology of the Cell (I2BC) , Université Paris-Saclay, Université Paris-Sud , CNRS, CEA, 91405 Orsay Cedex , France.
Journal of the American Chemical Society
|June 29, 2019
まとめ
半導体量子ドット (QD) は,多用途のフォースター共振エネルギー転送 (FRET) ネットワークを可能にします. この研究では,マイクロビーズの区別のための光学バーコードを可能にするマルチドナー-QD-マルチ受容器システムを分析しています.
科学分野:
- ナノテクノロジー
- フォト物理学
- 生物医学工学
背景:
- 半導体量子ドット (QD) は,フォースター共振エネルギー転送 (FRET) のための非常に多用途のフッ素光子である.
- QDのマルチドナー-マルチ受容器FRETネットワークは,高度な光センサーと画像処理に不可欠です.
- これらの複雑なFRETシステムに関する包括的な理解はまだ進行中です.
研究 の 目的:
- マルチドナー-QD-マルチ受容器FRETシステムの全体的な光物理学的分析を提供する.
- QDに結合したテリビウム複合体 (Tb) ドナーとCy5.5染料受容体を含むFRET経路を調査する.
- 光学バーコードと光顕微鏡におけるこれらのシステムの応用を探求する.
主な方法:
- 時間解像度と安定状態の光発光 (PL) スペクトロスコーピーを利用した.
- 総合的な分析のためにモンテカルロシミュレーションを使用した.
- Tb,QD,Cy5.5 PL信号を分析してFRET経路を調査した.
主要な成果:
- 実験とシミュレーションの結果は優れた一致を示した.
- ヘテロFRET,ホモFRET,染料二分化による貢献を成功裏に解き放ちました.
- PL強度 (Tbドナー経由) とPL寿命 (Cy5. 5受容体経由) の独立した調整が実証されている.
結論:
- 調節可能な光学特性を有する明るさ均等化Tb-QD-Cy5.5コンジュガートを開発した.
- マイクロビーズの区別のためにRGB比を用いた光学バーコードにこれらのコンジュガートを適用した.
- 単一波長刺激と検出による標準の光顕微鏡の直接適用性を示した.
関連する概念動画
The de Broglie Wavelength
33.1K
In the macroscopic world, objects that are large enough to be seen by the naked eye follow the rules of classical physics. A billiard ball moving on a table will behave like a particle; it will continue traveling in a straight line unless it collides with another ball, or it is acted on by some other force, such as friction. The ball has a well-defined position and velocity or well-defined momentum, p = mv, which is defined by mass m and velocity v at any given moment. This is the typical...
33.1K
One-Way ANOVA: Equal Sample Sizes
4.0K
One-Way ANOVA can be performed on three or more samples with equal or unequal sample sizes. When one-way ANOVA is performed on two datasets with samples of equal sizes, it can be easily observed that the computed F statistic is highly sensitive to the sample mean.
Different sample means can result in different values for the variance estimate: variance between samples. This is because the variance between samples is calculated as the product of the sample size and the variance between the...
Different sample means can result in different values for the variance estimate: variance between samples. This is because the variance between samples is calculated as the product of the sample size and the variance between the...
4.0K
Electric Field of Two Equal and Opposite Charges
7.0K
Atoms generally contain the same number of positively and negatively charged particles, protons, and electrons. Hence, they are electrically neutral. However, the centers of the positive and negative charges do not always coincide. In such a scenario, the electric field of an atom may not be zero.
A separation of the positive and negative charges can lead to a weak, remnant effect of the positive and negative charges. The expectation is that the more the distance between the positive and...
A separation of the positive and negative charges can lead to a weak, remnant effect of the positive and negative charges. The expectation is that the more the distance between the positive and...
7.0K
Antiepileptic Drugs: Modulators of Neurotransmitter Release Mediated by SV2A Protein
849
Antiepileptic drugs, such as levetiracetam (Keppra) and brivaracetam (Briviact), have emerged as crucial tools in managing epilepsy. These medications exert their therapeutic effects by targeting the synaptic vesicle protein SV2A, a transmembrane glycoprotein primarily found in the brain.
SV2A is a transmembrane glycoprotein located predominantly in the brain, modulating the release of neurotransmitters for neuronal communication. Both levetiracetam and brivaracetam exhibit a high affinity for...
SV2A is a transmembrane glycoprotein located predominantly in the brain, modulating the release of neurotransmitters for neuronal communication. Both levetiracetam and brivaracetam exhibit a high affinity for...
849
Load along a Single Axis
632
In structural engineering, the analysis of beams subjected to varying loads is a critical aspect of understanding the behavior and performance of these structural elements. A common scenario involves a beam subjected to a combination of different load distributions.
Consider a beam of length L subjected to a varying load, which is a combination of parabolic and trapezoidal load distribution along the x-axis. In this case, it is essential to determine the resultant loads, their locations, and...
Consider a beam of length L subjected to a varying load, which is a combination of parabolic and trapezoidal load distribution along the x-axis. In this case, it is essential to determine the resultant loads, their locations, and...
632
Single Pipe Systems
439
In pipe flow analysis, problems are typically categorized into three types — Type I, Type II, and Type III — based on the known parameters and the desired outcome. Each type of problem addresses specific engineering requirements using fluid properties, pipe characteristics, and operational conditions.
In a Type I problem, fluid properties (density and viscosity), pipe characteristics (including diameter, length, and surface roughness), and the flow rate or average velocity are...
In a Type I problem, fluid properties (density and viscosity), pipe characteristics (including diameter, length, and surface roughness), and the flow rate or average velocity are...
439


