Journal
VIRUSES-BASEL
Volume 11, Issue 7, Pages -Publisher
MDPI
DOI: 10.3390/v11070596
Keywords
viral attachment receptor; heparan sulfate proteoglycans; HSPG; syndecans; glypicans; viral adaptation; intra-host adaptation; tropism; broad-spectrum antivirals; viral binding
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Funding
- Leenaards Foundation [ME10409]
- Swiss National Science Foundation [310030_184777]
- Sinergia grant [ME11323]
- Swiss National Science Foundation (SNF) [310030_184777] Funding Source: Swiss National Science Foundation (SNF)
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Heparan sulfate proteoglycans (HSPG) are composed of unbranched, negatively charged heparan sulfate (HS) polysaccharides attached to a variety of cell surface or extracellular matrix proteins. Widely expressed, they mediate many biological activities, including angiogenesis, blood coagulation, developmental processes, and cell homeostasis. HSPG are highly sulfated and broadly used by a range of pathogens, especially viruses, to attach to the cell surface. In this review, we summarize the current knowledge on HSPG-virus interactions and distinguish viruses with established HS binding, viruses that bind HS only after intra-host or cell culture adaptation, and finally, viruses whose dependence on HS for infection is debated. We also provide an overview of the antiviral compounds designed to interfere with HS binding. Many questions remain about the true importance of these receptors in vivo, knowledge that is critical for the design of future antiviral therapies.
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