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相关概念视频

Antibody Structure01:10

Antibody Structure

59.6K
Overview
Antibodies, also known as immunoglobulins (Ig), are essential players of the adaptive immune system. These antigen-binding proteins are produced by B cells and make up 20 percent of the total blood plasma by weight. In mammals, antibodies fall into five different classes, which each elicits a different biological response upon antigen binding.
The Y-Shaped Structure of Antibodies Consists of Four Polypeptide Chains
Antibodies consist of four polypeptide chains: two identical heavy...
59.6K
Antibody Structure and Classes01:25

Antibody Structure and Classes

859
Antibodies, also known as immunoglobulins, are produced by B cells in response to foreign substances, such as bacteria and viruses. These proteins are critical for recognizing and neutralizing these substances, protecting the body from potential harm.
The basic structure of an antibody consists of four protein chains: two identical heavy chains and two identical light chains. These chains are held together by disulfide bonds and other non-covalent interactions, forming a Y-shaped structure.
859
Hybridoma Technology01:31

Hybridoma Technology

14.2K
Hybridoma technology is used for the large-scale production of monoclonal antibodies. Monoclonal antibodies bind to only a single antigenic determinant or epitope. Such antibodies are used in research, diagnostics, and disease therapy. The hybridoma technology established in 1975 by Georges Köhler and Cesar Milstein was awarded the Nobel Prize in Medicine in 1984 for revolutionizing research and therapy.
Hybridoma Selection
Commonly used fusion techniques — electroporation,...
14.2K
Diversity of Antigen Receptors01:28

Diversity of Antigen Receptors

548
Antigen receptors are essential components of the immune system crucial in defending the body against foreign invaders. These receptors are present on the surface of B and T cells, enabling them to recognize antigens and mount an appropriate immune response.
Before encountering any antigen, lymphocytes express these receptors. On B cells, the antigen receptor is a membrane-bound antibody molecule called BCR; on T cells, it is a T cell receptor or TCR. B and T cell receptors are composed of two...
548

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相关实验视频

Updated: Jun 15, 2025

Author Spotlight: Advancing Biotherapeutic Mass Calculation by Introducing mAbScale, a Python-Based Desktop Application
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Author Spotlight: Advancing Biotherapeutic Mass Calculation by Introducing mAbScale, a Python-Based Desktop Application

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抗体-SGM,一种基于得分的生成模型,用于抗体重链设计.

Xuezhi Xie1,2, Pedro A Valiente1, Jin Sub Lee1,3

  • 1Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, Toronto, Ontario M5S 3E1, Canada.

Journal of chemical information and modeling
|August 27, 2024
PubMed
概括
此摘要是机器生成的。

抗体-SGM是一种新的联合结构-序列扩散模型,通过整合序列和结构来产生全原子抗体. 这种蛋白质设计方法优化了抗体功能和序列,推进了蛋白质工程.

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Generation of Discriminative Human Monoclonal Antibodies from Rare Antigen-specific B Cells Circulating in Blood
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Identification of Mouse and Human Antibody Repertoires by Next-Generation Sequencing
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科学领域:

  • 计算生物学是一种计算生物学.
  • 蛋白质工程是一种蛋白质工程.
  • 人工智能在药物发现中的作用

背景情况:

  • 传统的抗体设计依赖于随机突变和能量评估.
  • 最近的扩散模型在生成方面表现出色,但往往忽略了全部结构或序列细节.
  • 现有的模型需要额外的步骤来预测缺失的结构或序列组件.

研究的目的:

  • 引入Antibody-SGM,一个用于全面抗体设计的联合结构序列扩散模型.
  • 通过整合特定序列属性和功能属性来解决当前模型的局限性.
  • 为了生成与原生相似的,全原子抗体重链,具有有效的序列结构对.

主要方法:

  • 开发抗体-SGM,一个联合结构序列扩散模型.
  • 改进生成过程以确保有效的序列结构配对.
  • 将特定序列属性和功能性质集成到生成过程中.
  • 积极涂料的应用,以同时优化序列和结构.

主要成果:

  • 成功生成全原子,原生类抗体重链.
  • 在应用中展示了多功能性:全原子抗体设计,抗原特异性CDR设计和重链优化.
  • 使用AlphaFold3.3生成抗体的验证.
  • 确定关键的抗体序列和结构特征.
  • 通过积极的学习来优化蛋白质功能.

结论:

  • 抗体-SGM代表了蛋白质设计的重大进步,提供了一个多功能和强大的工具.
  • 该模型成功地整合了序列和结构,以增强抗体生成和优化.
  • 这种方法有望彻底改变蛋白质工程和抗体设计.