Id |
Subject |
Object |
Predicate |
Lexical cue |
T22 |
0-109 |
Sentence |
denotes |
Innate immune sensing serves as the first line of antiviral defense and is essential for immunity to viruses. |
T23 |
110-211 |
Sentence |
denotes |
To date, our understanding of the specific innate immune response to SARS-CoV-2 is extremely limited. |
T24 |
212-435 |
Sentence |
denotes |
However, the virus-host interactions involving SARS-CoV-2 are likely to recapitulate many of those involving other CoVs, given the shared sequence homology among CoVs and the conserved mechanisms of innate immune signaling. |
T25 |
436-745 |
Sentence |
denotes |
In the case of RNA viruses such as SARS-CoV-2, these pathways are initiated through the engagement of pattern-recognition receptors (PRRs) by viral single-stranded RNA (ssRNA) and double-stranded RNA (dsRNA) via cytosolic RIG-I like receptors (RLRs) and extracellular and endosomal Toll-like receptors (TLRs). |
T26 |
746-832 |
Sentence |
denotes |
Upon PRR activation, downstream signaling cascades trigger the secretion of cytokines. |
T27 |
833-1075 |
Sentence |
denotes |
Among these, type I/III interferons (IFNs) are considered the most important for antiviral defense, but other cytokines, such as proinflammatory tumor necrosis factor alpha (TNF-α), and interleukin-1 (IL-1), IL-6, and IL-18 are also released. |
T28 |
1076-1177 |
Sentence |
denotes |
Together, they induce antiviral programs in target cells and potentiate the adaptive immune response. |
T29 |
1178-1320 |
Sentence |
denotes |
If present early and properly localized, IFN-I can effectively limit CoV infection (Channappanavar et al., 2016, Channappanavar et al., 2019). |
T30 |
1321-1554 |
Sentence |
denotes |
Early evidence demonstrated that SARS-CoV-2 is sensitive to IFN-I/III pretreatment in vitro, perhaps to a greater degree than SARS-CoV-1 (Blanco-Melo et al., 2020, Lokugamage et al., 2020, Mantlo et al., 2020, Stanifer et al., 2020). |
T31 |
1555-1670 |
Sentence |
denotes |
However, the specific IFN-stimulated genes (ISGs) that mediate these protective effects are still being elucidated. |
T32 |
1671-1846 |
Sentence |
denotes |
Lymphocyte antigen 6 complex locus E (LY6E) has been shown to interfere with SARS-CoV-2 spike (S) protein-mediated membrane fusion (Pfaender et al., 2020, Zhao et al., 2020c). |
T33 |
1847-2112 |
Sentence |
denotes |
Likely, the IFN-induced transmembrane family (IFITM) proteins inhibit SARS-CoV-2 entry, as demonstrated for SARS-CoV-1 (Huang et al., 2011b), although their action in promoting infection has also been described for other CoVs (Zhao et al., 2014, Zhao et al., 2018). |