高性能抗体的绑定模式引导开发,针对特定位点的翻译后修饰
Mariapia Riso1, Rohan N Shah2,3, Akiko Koide1,4
1Laura and Isaac Perlmutter Cancer Center, New York University Langone Health, New York, NY 10016.
概括
研究人员开发了一个新平台,用于创建针对蛋白质翻译后修饰 (PTMs) 的高特异性重组抗体. 这种抗原结合方法确保了分子定义和可再生的抗体,提高了生物医学研究中的可重复性.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 翻译后修饰 (PTMs) 调节关键的细胞事件.
- 由于分子识别的困难,为PTMs生成高度特异性的抗体具有挑战性.
- 目前的抗体可能是不一致的和不可更新的,影响研究可重现性.
研究的目的:
- 开发一个平台,用于产生强效,选择性和可再生的对PTMs的重组抗体.
- 为了利用"抗原结合"的结合模式来提高抗体性能.
- 解决与抗体变异性相关的生物医学研究中的可复制性挑战.
主要方法:
- 使用一种基于"抗原结合"机制的结合模式引导方法.
- 设计了一个平台,以产生具有两个不同的结合单元的结合抗体.
- 应用该平台产生抗体对三甲基化素H3和激素抗原.
主要成果:
- 成功生成了对PTMs的强效和选择性重组抗体.
- 结抗体对三甲基化素H3具有很高的特异性和亲和力.
- 与传统抗体相比,对H3K27me3的结合抗体在染色质免疫沉方面表现出更高的特异性.
- 该平台有效地产生了对色胺抗原的粘合抗体.
结论:
- 开发的平台有效地产生了针对PTMs的分子定义和可再生的合抗体.
- 抗原结合抗体提供优越的特异性和亲和力,增强PTM检测和丰富.
- 该平台具有广泛的适用性,用于产生针对各种PTM的高性能抗体,提高研究可靠性.
更多相关视频
11:02Genetic Encoding of a Non-Canonical Amino Acid for the Generation of Antibody-Drug Conjugates Through a Fast Bioorthogonal Reaction
Published on: September 14, 2018
7.7K
08:47Synthesis and Bioconjugation of Thiol-Reactive Reagents for the Creation of Site-Selectively Modified Immunoconjugates
Published on: March 6, 2019
9.4K
相关概念视频
Conserved Binding Sites
Many proteins’ biological role depends on their interactions with their ligands, small molecules that bind to specific locations on the protein known as ligand-binding sites. Ligand-binding sites are often conserved among homologous proteins as these sites are critical for protein function.
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally analyses the...
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally analyses the...
Improving Translational Accuracy
Base complementarity between the three base pairs of mRNA codon and the tRNA anticodon is not a failsafe mechanism. Inaccuracies can range from a single mismatch to no correct base pairing at all. The free energy difference between the correct and nearly correct base pairs can be as small as 3 kcal/ mol. With complementarity being the only proofreading step, the estimated error frequency would be one wrong amino acid in every 100 amino acids incorporated. However, error frequencies observed in...
Leaky Scanning
During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA. Marilyn Kozak discovered that the sequence RCCAUGG (where R stands for...
Improving Translational Accuracy
Base complementarity between the three base pairs of mRNA codon and the tRNA anticodon is not a failsafe mechanism. Inaccuracies can range from a single mismatch to no correct base pairing at all. The free energy difference between the correct and nearly correct base pairs can be as small as 3 kcal/ mol. With complementarity being the only proofreading step, the estimated error frequency would be one wrong amino acid in every 100 amino acids incorporated. However, error frequencies observed in...
Immunoprecipitation
Immunoprecipitation, or IP, is a widely used technique that employs protein-antibody interactions to isolate proteins or protein complexes in their native state for studying protein-protein interactions, quaternary structures, or supramolecular complexes. Various modifications of the technique, including chromatin IP, cross-linking IP, and fluorescence IP, are commonly used.
Chromatin Immunoprecipitation
Chromatin immunoprecipitation, also known as ChIP, is used to study protein-DNA or...
Chromatin Immunoprecipitation
Chromatin immunoprecipitation, also known as ChIP, is used to study protein-DNA or...
Immunogold Electron Microscopy
Immunoelectron microscopy utilizes immunogold labeling of endogenous proteins with specific antibodies to detect and localize these proteins in cells and tissues. The procedure provides insights into the distribution and quantification of protein under different stimulation conditions offering clues about their functions. Conjugating highly electron-dense gold particles with primary or secondary antibodies allow antigen detection on and within cells, with high resolution and specificity.
