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Deprecated: Implicit conversion from float 269.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 PLoS+Pathog 2022 ; 18 (6): e1010590 Nephropedia Template TP
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Significant role of host sialylated glycans in the infection and spread of severe acute respiratory syndrome coronavirus 2 #MMPMID35700214
Saso W; Yamasaki M; Nakakita SI; Fukushi S; Tsuchimoto K; Watanabe N; Sriwilaijaroen N; Kanie O; Muramatsu M; Takahashi Y; Matano T; Takeda M; Suzuki Y; Watashi K
PLoS Pathog 2022[Jun]; 18 (6): e1010590 PMID35700214show ga
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has been transmitted across all over the world, in contrast to the limited epidemic of genetically- and virologically-related SARS-CoV. However, the molecular basis explaining the difference in the virological characteristics among SARS-CoV-2 and SARS-CoV has been poorly defined. Here we identified that host sialoglycans play a significant role in the efficient spread of SARS-CoV-2 infection, while this was not the case with SARS-CoV. SARS-CoV-2 infection was significantly inhibited by alpha2-6-linked sialic acid-containing compounds, but not by alpha2-3 analog, in VeroE6/TMPRSS2 cells. The alpha2-6-linked compound bound to SARS-CoV-2 spike S1 subunit to competitively inhibit SARS-CoV-2 attachment to cells. Enzymatic removal of cell surface sialic acids impaired the interaction between SARS-CoV-2 spike and angiotensin-converting enzyme 2 (ACE2), and suppressed the efficient spread of SARS-CoV-2 infection over time, in contrast to its least effect on SARS-CoV spread. Our study provides a novel molecular basis of SARS-CoV-2 infection which illustrates the distinctive characteristics from SARS-CoV.