相关实验视频

Updated: Jul 29, 2025

Assessing the Innate Sensing of HIV-1 Infected CD4+ T Cells by Plasmacytoid Dendritic Cells Using an Ex vivo Co-culture System.

Assessing the Innate Sensing of HIV-1 Infected CD4+ T Cells by Plasmacytoid Dendritic Cells Using an Ex vivo Co-culture System.

Published on: September 1, 2015

皮皮瑞丁CD4-模拟化合物暴露易受伤害的恩维皮托普,使HIV-1感染细胞对ADCC敏感

Shilei Ding¹, William D Tolbert², Huile Zhu³

¹Centre de Recherche du CHUM, Montreal, QC H2X 0A9, Canada.

|May 27, 2023

概括

针对HIV-1 Env的新型小分子使感染细胞对抗体依赖细胞细胞毒性 (ADCC) 产生敏感性. 这些化合物为消除HIV-1感染细胞提供了一个有希望的策略.

科学领域:

病毒学病毒学
免疫学免疫学免疫学
药用化学医学化学

背景情况:

艾滋病毒-1辅助蛋白Nef和Vpu降低了CD4水平,保护感染细胞免受抗体依赖细胞毒性 (ADCC).
小分子CD4模仿剂 (CD4mc) 暴露了CD4诱导的 (CD4i) 表位,使HIV-1感染细胞对ADCC敏感.
在HIV-1患者血中的非中和抗体识别了这些CD4i表位.

研究的目的:

描述一种新的基于piperidine的CD4mc衍生物家族.
开发具有针对难以中和的HIV-1变种的增强活性的类似物.
研究这些分子在消除HIV-1感染细胞中的潜力.

主要方法:

基于结构的药物设计,使用piperidine支架.
新型CD4mc类型的合成和表征.
评估2级HIV-1感染的抑制和ADCC敏感性的测试.

主要成果:

开发出新的基于piperidine的CD4mc衍生物,通过gp120 Phe43腔参与并准保存的Asp368.8.
同类药物在抑制2级HIV-1感染方面表现出更好的活性.
这些分子有效地使HIV-1感染细胞对HIV+血介导的ADCC敏感.
确定了与Asp368的关键H键键相互作用,扩大了抗Env分子的化学空间.

结论:

新的CD4mc衍生物显示出HIV-1治疗的巨大潜力.
这些分子通过暴露CD4i表位体来增强ADCC,从而促进受感染细胞的消除.
鉴定的结构特征为开发更广泛的抗Env疗法提供了基础.

关键词:

艾滋病病毒-1 艾滋病病毒-1 在Phe43洞穴中.抗体依赖的细胞细胞毒性 (ADCC)包裹中的葡萄糖蛋白质.中和化中和化中和化小CD4仿真化合物 (CD4mc) 是一种小CD4仿真化合物.

更多相关视频

Peptide-based Identification of Functional Motifs and their Binding Partners

Peptide-based Identification of Functional Motifs and their Binding Partners

Published on: June 30, 2013

In Vitro Assay to Evaluate the Impact of Immunoregulatory Pathways on HIV-specific CD4 T Cell Effector Function

In Vitro Assay to Evaluate the Impact of Immunoregulatory Pathways on HIV-specific CD4 T Cell Effector Function

Published on: October 15, 2013

相关概念视频

Immunodeficiency Diseases

Immunodeficiency Diseases

Immunodeficiency disorders are conditions in which the immune system's ability to fight infectious disease and cancer is compromised or entirely absent. The immune system comprises a complex network of cells, tissues, and organs that work together to protect the body from potentially harmful invaders. When this system is deficient or not functioning properly, it leaves the body susceptible to infections, diseases, or other complications.
There are three main causes of immunodeficiency...

Antigens Involved in Adaptive Immunity

Antigens Involved in Adaptive Immunity

An antigen is any substance the immune system identifies as foreign and potentially harmful to the body, prompting an immune response. Antigens have two functional properties: immunogenicity and reactivity. Immunogenicity is the ability of an antigen to stimulate a specific immune response. At the same time, reactivity describes the antigen's ability to react with the cells and antibodies produced in response to it.
Complete Antigens
Complete antigens possess both immunogenicity and...