• FluTrackers.com Inc. does not provide medical advice. Information on this web site is collected from various internet resources, and the FluTrackers board of directors makes no warranty to the safety, efficacy, correctness or completeness of the information posted on this site by any author or poster. The information collated here is for instructional and/or discussion purposes only and is NOT intended to diagnose or treat any disease, illness, or other medical condition. Every individual reader or poster should seek advice from their personal physician/healthcare practitioner before considering or using any interventions that are discussed on this website. By continuing to access this website you agree to consult your personal physican before using any interventions posted on this website, and you agree to hold harmless FluTrackers.com Inc., the board of directors, the members, and all authors and posters for any effects from use of any medication, supplement, vitamin or other substance, device, intervention, etc. mentioned in posts on this website, or other internet venues referenced in posts on this website.
  • We are not asking for any donations. Do not donate to any entity who says they are raising funds for us.

Immunity . SARS-CoV-2 exacerbates proinflammatory responses in myeloid cells through C-type lectin receptors and Tweety family member 2

tetano

Editor, Senior Moderator
Immunity


. 2021 May 9;S1074-7613(21)00212-0.
doi: 10.1016/j.immuni.2021.05.006. Online ahead of print.
SARS-CoV-2 exacerbates proinflammatory responses in myeloid cells through C-type lectin receptors and Tweety family member 2


Qiao Lu[SUP] 1 [/SUP], Jia Liu[SUP] 1 [/SUP], Shuai Zhao[SUP] 2 [/SUP], Maria Florencia Gomez Castro[SUP] 3 [/SUP], Maudry Laurent-Rolle[SUP] 4 [/SUP], Jianbo Dong[SUP] 5 [/SUP], Xiaojuan Ran[SUP] 2 [/SUP], Payal Damani-Yokota[SUP] 6 [/SUP], Hongzhen Tang[SUP] 2 [/SUP], Triantafyllia Karakousi[SUP] 1 [/SUP], Juhee Son[SUP] 3 [/SUP], Maria E Kaczmarek[SUP] 6 [/SUP], Ze Zhang[SUP] 1 [/SUP], Stephen T Yeung[SUP] 6 [/SUP], Broc T McCune[SUP] 7 [/SUP], Rita E Chen[SUP] 7 [/SUP], Fei Tang[SUP] 8 [/SUP], Xianwen Ren[SUP] 8 [/SUP], Xufeng Chen[SUP] 9 [/SUP], Jack C C Hsu[SUP] 4 [/SUP], Marianna Teplova[SUP] 1 [/SUP], Betty Huang[SUP] 5 [/SUP], Haijing Deng[SUP] 2 [/SUP], Zhilin Long[SUP] 2 [/SUP], Tenny Mudianto[SUP] 9 [/SUP], Shumin Jin[SUP] 2 [/SUP], Peng Lin[SUP] 2 [/SUP], Jasper Du[SUP] 9 [/SUP], Ruochen Zang[SUP] 3 [/SUP], Tina Tianjiao Su[SUP] 4 [/SUP], Alberto Herrera[SUP] 9 [/SUP], Ming Zhou[SUP] 2 [/SUP], Renhong Yan[SUP] 10 [/SUP], Jia Cui[SUP] 11 [/SUP], James Zhu[SUP] 12 [/SUP], Qiang Zhou[SUP] 10 [/SUP], Tao Wang[SUP] 12 [/SUP], Jianzhu Ma[SUP] 13 [/SUP], Sergei B Koralov[SUP] 9 [/SUP], Zemin Zhang[SUP] 8 [/SUP], Iannis Aifantis[SUP] 9 [/SUP], Leopoldo N Segal[SUP] 14 [/SUP], Michael S Diamond[SUP] 15 [/SUP], Kamal M Khanna[SUP] 16 [/SUP], Kenneth A Stapleford[SUP] 6 [/SUP], Peter Cresswell[SUP] 4 [/SUP], Yue Liu[SUP] 5 [/SUP], Siyuan Ding[SUP] 17 [/SUP], Qi Xie[SUP] 18 [/SUP], Jun Wang[SUP] 19 [/SUP]



Affiliations

Abstract

Despite mounting evidence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) engagement with immune cells, most express little, if any, of the canonical receptor of SARS-CoV-2, angiotensin-converting enzyme 2 (ACE2). Here, using a myeloid cell receptor-focused ectopic expression screen, we identified several C-type lectins (DC-SIGN, L-SIGN, LSECtin, ASGR1, and CLEC10A) and Tweety family member 2 (TTYH2) as glycan-dependent binding partners of the SARS-CoV-2 spike. Except for TTYH2, these molecules primarily interacted with spike via regions outside of the receptor-binding domain. Single-cell RNA sequencing analysis of pulmonary cells from individuals with coronavirus disease 2019 (COVID-19) indicated predominant expression of these molecules on myeloid cells. Although these receptors do not support active replication of SARS-CoV-2, their engagement with the virus induced robust proinflammatory responses in myeloid cells that correlated with COVID-19 severity. We also generated a bispecific anti-spike nanobody that not only blocked ACE2-mediated infection but also the myeloid receptor-mediated proinflammatory responses. Our findings suggest that SARS-CoV-2-myeloid receptor interactions promote immune hyperactivation, which represents potential targets for COVID-19 therapy.

Keywords: ASGR1; CLEC10A; COVID-19; DC-SIGN; L-SIGN; LSECtin; SARS-CoV-2; TTYH2; myeloid cells; proinflammatory responses.
 
Back
Top Bottom