评估 SARS-CoV-2 在人肺组织细胞中的进入、炎症和新的治疗方法。
Evaluation of SARS-CoV-2 entry, inflammation and new therapeutics in human lung tissue cells.
机构信息
Infectious Diseases Department, Vall d'Hebron Research Institute (VHIR), Hospital Universitari Vall d'Hebron, Universitat Autònoma de Barcelona, VHIR Task Force COVID-19, Barcelona, Spain.
Nephrology Research Department, Vall d'Hebron Research Institute (VHIR), Hospital Universitari Vall d'Hebron, Universitat Autònoma de Barcelona, VHIR Task Force COVID-19, Barcelona, Spain.
出版信息
PLoS Pathog. 2022 Jan 13;18(1):e1010171. doi: 10.1371/journal.ppat.1010171. eCollection 2022 Jan.
The development of physiological models that reproduce SARS-CoV-2 infection in primary human cells will be instrumental to identify host-pathogen interactions and potential therapeutics. Here, using cell suspensions directly from primary human lung tissues (HLT), we have developed a rapid platform for the identification of viral targets and the expression of viral entry factors, as well as for the screening of viral entry inhibitors and anti-inflammatory compounds. The direct use of HLT cells, without long-term cell culture and in vitro differentiation approaches, preserves main immune and structural cell populations, including the most susceptible cell targets for SARS-CoV-2; alveolar type II (AT-II) cells, while maintaining the expression of proteins involved in viral infection, such as ACE2, TMPRSS2, CD147 and AXL. Further, antiviral testing of 39 drug candidates reveals a highly reproducible method, suitable for different SARS-CoV-2 variants, and provides the identification of new compounds missed by conventional systems, such as VeroE6. Using this method, we also show that interferons do not modulate ACE2 expression, and that stimulation of local inflammatory responses can be modulated by different compounds with antiviral activity. Overall, we present a relevant and rapid method for the study of SARS-CoV-2.
开发能够在原代人源细胞中再现 SARS-CoV-2 感染的生理学模型,对于鉴定宿主-病原体相互作用和潜在治疗方法至关重要。在这里,我们使用直接来自原代人肺组织(HLT)的细胞悬液,开发了一种快速平台,用于鉴定病毒靶标和病毒进入因子的表达,以及筛选病毒进入抑制剂和抗炎化合物。直接使用 HLT 细胞,而无需长期细胞培养和体外分化方法,可以保留主要的免疫和结构细胞群体,包括对 SARS-CoV-2 最易感的细胞靶标;肺泡 II 型(AT-II)细胞,同时保持参与病毒感染的蛋白质的表达,如 ACE2、TMPRSS2、CD147 和 AXL。此外,对 39 种候选药物的抗病毒测试揭示了一种高度可重复的方法,适用于不同的 SARS-CoV-2 变体,并提供了传统系统错过的新化合物的鉴定,如 VeroE6。使用这种方法,我们还表明干扰素不会调节 ACE2 的表达,并且不同具有抗病毒活性的化合物可以调节局部炎症反应。总的来说,我们提出了一种用于研究 SARS-CoV-2 的相关且快速的方法。