普利蒂素可以用作抗RSV的抗病毒药物吗?
Charlotte Estampes1, Jenna Fix1, Julien Sourimant1
1Unité de Virologie et Immunologie Moléculaires (VIM), INRAE, Université Paris Saclay, Jouy-en-Josas, France.
普利蒂素通过阻断细胞翻译和降解必需的eEF1A蛋白质来抑制人类呼吸道同胞性病毒 (HRSV) 的复制. 这种取决于细胞类型的机制表明,plitidepsin对抗病毒疗法具有风险.
科学领域:
- 病毒学和分子生物学
- 药物发现和开发 药物发现和开发
背景情况:
- 人类呼吸道同胞性病毒 (HRSV) 导致严重的呼吸道感染,尽管最近批准了疫苗,但目前还没有治疗治疗方法.
- 细胞翻译延长因子1A (eEF1A) 对于HRSV复制至关重要,并且研究了它被plitidepsin抑制的作用.
研究的目的:
- 为了研究海产化合物普利蒂素对HRSV复制的疗效.
- 阐明关于HRSV和宿主因子eEF1A的plitidepsin作用机制.
主要方法:
- 细胞培养实验,以评估HRSV复制抑制的plitidepsin.
- 非放射性脉冲追踪标签用于分析蛋白质合成和eEF1A降解.
- 用蛋白酶体抑制剂治疗以调查eEF1A.的降解途径.
主要成果:
- 普利蒂素抑制了HRSV复制,其IC50大约为3nM.
- 普利蒂素表现出性作用,在很大程度上抑制了细胞和病毒蛋白转化.
- 在特定细胞系 (BSRT7),但不包括其他细胞系 (HEp-2,Vero E6) 中,eEF1A的普利蒂素诱导的蛋白质酶介导降解.
结论:
- 普利蒂素对HRSV的抗病毒活性与其对细胞翻译和eEF1A降解的非特异性抑制有关.
- 根据细胞类型的eEF1A降解突显了plitidepsin的复杂作用机制.
- 这些发现表明,由于它对宿主细胞功能的广泛影响,与用于人类抗病毒疗法的plitidepsin相关的重大风险.
更多相关视频
09:01An In vitro Model to Study Immune Responses of Human Peripheral Blood Mononuclear Cells to Human Respiratory Syncytial Virus Infection
Published on: December 10, 2013
09:14An Improved and High Throughput Respiratory Syncytial Virus RSV Micro-neutralization Assay
Published on: January 26, 2019
相关概念视频
Upper Respiratory Drugs: Decongestants
Most decongestants are readily available over-the-counter in...
Drugs Used in Lower Respiratory Disorders: Overview
Bronchodilators, the first step of respiration enhancement, come in various forms, each with its own mechanism...
Upper Respiratory Drugs: First and Second-Generation Antihistamines
Histamine binds to specific receptor sites, known as H1 receptors, on tissue cells, triggering inflammation and swelling. Antihistamines combat these effects by competing with histamine for these receptor sites. By...
Drugs Used in Upper Respiratory Disorders: Overview
Antihistamines (e.g., Benadryl) block histamines from binding. Histamines are chemicals released during an allergic reaction in the body. As a...
Common Respiratory Disorders
Upper respiratory disorders impact the airways above the vocal cords, encompassing areas like the nose, sinuses, and throat. Various conditions fall under this category, including the common cold and allergic rhinitis. These disorders can stem from several causes,...
Acute Respiratory Failure-IV
