推进PROTAC的表征:通过ADDUCT和多式联动MS策略进行结构洞察
Mohammed Rahman1,2, Bryan Marzullo1, Stephen W Holman3
1Department of Chemistry, University of Warwick, Coventry, CV4 7AL, U.K.
Journal of the American Society for Mass Spectrometry
|January 10, 2024
概括
这项研究开创了针对蛋白质溶解向合体 (PROTACs) 的双重质谱 (MS) 分析,揭示了对于这些治疗分子的特征至关重要的碎片化模式.
科学领域:
- 分析化学 分析化学
- 化学生物学 化学生物学
- 药物发现 药物发现 药物发现
背景情况:
- 针对蛋白质溶解的嵌合体 (PROTACs) 是一种新兴的疗法,可诱导向蛋白质降解.
- 原生 PROTAC 缺乏全面的双重质谱 (MS) 分析,阻碍了详细的结构特征.
- 了解PROTAC的碎片化对于其发展和质量控制至关重要.
研究的目的:
- 为了研究两个PROTAC,dBET1和VZ185.5的双重质谱 (MS/MS) 碎片化模式.
- 通过使用各种和MS技术,增强PROTAC的结构特征.
- 确定最佳的MS方法来阐明PROTAC结构.
主要方法:
- 使用,和银离子对dBET1和VZ185进行并列质谱 (MS/MS) 分析.
- 阳性和负极性模式MS分析.
- 使用来自降解研究的2DMS数据进行De novo结构确定.
- 分析电荷状态依赖的碎片化.
主要成果:
- 酸改善了dBET1的正模式覆盖率;负模式提供了更丰富的数据.
- 与电荷相关的因素影响了VZ185中的小部分观测,[M + 2H]2+显示的碎片比[M + H]+少.
- 银 adducts 表示电荷定向和电荷远程碎片化机制.
- 在多种碎片化技术中发现了频繁分离的债券.
结论:
- 这项研究提供了第一个关于本地PROTACs的MS/MS碎片化的详细分析.
- 确定了用于PROTAC结构阐明的最佳MS策略.
- 这些发现有助于更好地理解和开发PROTACs作为治疗剂.
相关概念视频
Peptide Identification Using Tandem Mass Spectrometry
6.5K
Tandem mass spectrometry, also known as MS/MS or MS2, is an analytical technique that employs two mass analyzers. Essentially it is a series of mass spectrometers that helps isolate a particular biomolecule and then helps study its chemical properties.
This technique helps gather information regarding the protein from which the peptide was obtained and to study the peptides’ amino acid sequence. Identifying peptides from a complex mixture is an important component of the growing field of...
This technique helps gather information regarding the protein from which the peptide was obtained and to study the peptides’ amino acid sequence. Identifying peptides from a complex mixture is an important component of the growing field of...
6.5K
¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)
1.1K
When proton-coupled carbon-13 spectra are simplified by a broadband proton decoupling technique, structural information about the coupled protons is lost. Distortionless enhancement by polarization transfer (DEPT) is a technique that provides information on the number of hydrogens attached to each carbon in a molecule. While the DEPT experiment utilizes complex pulse sequences, the pulse delay and flip angle are specifically manipulated. The resulting signals have different phases depending on...
1.1K
Mass Spectrometry: Complex Analysis
785
Mass spectrometry is an important technique for the identification of pure compounds. However, it has some limitations for the analysis of complex mixtures, often due to excessive fragmentation making the spectrum too complicated to decipher. Mass spectrometry can be combined with suitable separation methods in sequence, forming hyphenated methods, which are useful in the analysis of complex mixtures.
GC–MS is a powerful hyphenated method commonly used in forensics and environmental...
GC–MS is a powerful hyphenated method commonly used in forensics and environmental...
785
MALDI-TOF Mass Spectrometry
4.8K
Mass spectrometry is a powerful characterization technique that can identify and separate a wide variety of compounds ranging from chemical to biological entities, based on their mass-to-charge ratio (m/z). The instruments that allow this detection, known as mass spectrometers, have three components: an ion source, a mass analyzer, and a detector. These spectrometers differ based on the nature of their ion source and analyzers.
Matrix-assisted laser desorption ionization (MALDI) is a commonly...
Matrix-assisted laser desorption ionization (MALDI) is a commonly...
4.8K
Double Resonance Techniques: Overview
213
Double resonance techniques in Nuclear Magnetic Resonance (NMR) spectroscopy involve the simultaneous application of two different frequencies or radiofrequency pulses to manipulate and observe two distinct nuclear spins. One important application of double resonance is spin decoupling, which selectively suppresses coupling with one type of nucleus while observing the NMR signal from another nucleus, simplifying the spectrum and enhancing resolution.
Spin decoupling is usually achieved by...
Spin decoupling is usually achieved by...
213


