《MICROBES INFECT,3月19日,Predicting the angiotensin converting enzyme 2 (ACE2) utilizing capability as the receptor of SARS-CoV-2》

  • 来源专题:COVID-19科研动态监测
  • 编译者: zhangmin
  • 发布时间:2020-03-20
  • Predicting the angiotensin converting enzyme 2 (ACE2) utilizing capability as the receptor of SARS-CoV-2

    YeQiu1Yuan-BoZhao1QiongWangJin-YanLiZhi-JianZhouCe-HengLiaoXing-YiGe

    Show more

    https://doi.org/10.1016/j.micinf.2020.03.003

    Abstract

    SARS-CoV-2, the newly identified human coronavirus causing severe pneumonia epidemic, was probably originated from Chinese horseshoe bats. However, direct transmission of the virus from bats to humans is unlikely due to lack of direct contact, implying the existence of unknown intermediate hosts. Angiotensin converting enzyme 2 (ACE2) is the receptor of SARS-CoV-2, but only ACE2s of certain species can be utilized by SARS-CoV-2. Here, we evaluated and ranked the receptor-utilizing capability of ACE2s from various species by phylogenetic clustering and sequence alignment with the currently known ACE2s utilized by SARS-CoV-2. As a result, we predicted that SARS-CoV-2 tends to utilize ACE2s of various mammals, except murines, and some birds, such as pigeon. This prediction may help to screen the intermediate hosts of SARS-CoV-2.

  • 原文来源:https://www.sciencedirect.com/science/article/abs/pii/S1286457920300496
相关报告
  • 《bioRxiv,6月13日,Receptor utilization of angiotensin converting enzyme 2 (ACE2) indicates a narrower host range of SARS-CoV-2 than that of SARS-CoV》

    • 来源专题:COVID-19科研动态监测
    • 编译者:xuwenwhlib
    • 发布时间:2020-06-14
    • Single-cell transcriptomic analysis of SARS-CoV-2 reactive CD4+ T cells Benjamin J Meckiff, Ciro Ramirez-Suastegui, Vicente Fajardo, Serena J Chee, Anthony Kusnadi, Hayley Simon, Alba Grifoni, Emanuela Pelosi, Daniela Weiskopf, Alessandro Sette, Ferhat Ay, Gregory Seumois, Christian Ottensmeier, Pandurangan Vijayanand doi: https://doi.org/10.1101/2020.06.12.148916 Abstract The contribution of CD4+ T cells to protective or pathogenic immune responses to SARS-CoV-2 infection remains unknown. Here, we present large-scale single-cell transcriptomic analysis of viral antigen-reactive CD4+ T cells from 32 COVID-19 patients. In patients with severe disease compared to mild disease, we found increased proportions of cytotoxic follicular helper (TFH) cells and cytotoxic T helper cells (CD4-CTLs) responding to SARS-CoV-2, and reduced proportion of SARS-CoV-2 reactive regulatory T cells. Importantly, the CD4-CTLs were highly enriched for the expression of transcripts encoding chemokines that are involved in the recruitment of myeloid cells and dendritic cells to the sites of viral infection. Polyfunctional T helper (TH)1 cells and TH17 cell subsets were underrepresented in the repertoire of SARS-CoV-2-reactive CD4+ T cells compared to influenza-reactive CD4+ T cells. Together, our analyses provide so far unprecedented insights into the gene expression patterns of SARS-CoV-2 reactive CD4+ T cells in distinct disease severities.
  • 《3月19日_湖南大学预测ACE2作为SARS-CoV-2受体的能力》

    • 来源专题:COVID-19科研动态监测
    • 编译者:zhangmin
    • 发布时间:2020-03-20
    • 1.时间:2020年3月19日 2.机构或团队:湖南大学 3.事件概要: 湖南大学的科研人员在Microbes and Infection上发表论文“Predicting the angiotensin converting enzyme 2 (ACE2) utilizing capability as the receptor of SARS-CoV-2”,对ACE2作为SARS-CoV-2受体的能力进行了预测。 文章指出,SARS-CoV-2是一种新发现的引起严重肺炎流行的人类冠状病毒,可能起源于中国的马蹄蝠。但是,由于缺乏直接接触,不太可能将病毒从蝙蝠直接传播给人类,这意味着存在未知的中间宿主。血管紧张素转换酶2(ACE2)是SARS-CoV-2的受体,但SARS-CoV-2只能利用某些物种的ACE2。文章中,科研人员通过系统发育聚类和与SARS-CoV-2利用的当前已知ACE2的序列比对,评估和排序了来自各种物种的ACE2的受体利用能力。研究结果预测SARS-CoV-2倾向于利用除鼠类以外的各种哺乳动物和某些鸟类(如鸽子)的ACE2,该预测可能有助于筛选SARS-CoV-2的中间宿主。 4.附件: 原文链接: https://www.sciencedirect.com/science/article/abs/pii/S1286457920300496