Sialylated glycans as receptor and inhibitor of enterovirus 71 infection to DLD-1 intestinal cells
Abstract Background Many viruses recognize specific sugar residues, particularly sulfated or sialylated glycans, as the infection receptors. A change of sialic acid (2-6)-linked galactose (SA-α2,6Gal) to SA-α2,3Gal determines the receptor for avian flu infection. The receptor for enterovirus 71 (EV7...
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ftdoajarticles:oai:doaj.org/article:b2af449918694a3ea8007814fa0ff2d3 2023-05-15T15:34:32+02:00 Sialylated glycans as receptor and inhibitor of enterovirus 71 infection to DLD-1 intestinal cells Yang Kuender D Chuang Hau Yang Betsy 2009-09-01T00:00:00Z https://doi.org/10.1186/1743-422X-6-141 https://doaj.org/article/b2af449918694a3ea8007814fa0ff2d3 EN eng BMC http://www.virologyj.com/content/6/1/141 https://doaj.org/toc/1743-422X doi:10.1186/1743-422X-6-141 1743-422X https://doaj.org/article/b2af449918694a3ea8007814fa0ff2d3 Virology Journal, Vol 6, Iss 1, p 141 (2009) Infectious and parasitic diseases RC109-216 article 2009 ftdoajarticles https://doi.org/10.1186/1743-422X-6-141 2022-12-30T22:27:07Z Abstract Background Many viruses recognize specific sugar residues, particularly sulfated or sialylated glycans, as the infection receptors. A change of sialic acid (2-6)-linked galactose (SA-α2,6Gal) to SA-α2,3Gal determines the receptor for avian flu infection. The receptor for enterovirus 71 (EV71) infection that frequently causes fatal encephalitis in Asian children remains unclear. Currently, there is no effective vaccine or anti-virus agent for EV71 infection. Using DLD-1 intestinal cells, this study investigated whether SA-linked glycan on DLD-1 intestinal cells was a receptor for EV71, and whether natural SA-linked sugars from human milk could block EV71 infection. Results EV71 specifically infected DLD-1 intestinal cells but not K562 myeloid cells. Depletion of O-linked glycans or glycolipids, but not N-linked glycans, significantly decreased EV71 infection of DLD-1 cells. Pretreatment of DLD-1 cells with sialidase (10 mU, 2 hours) significantly reduced 20-fold EV71 replication (p < 0.01). Taken together, these results suggest that SA-linked O-glycans and glycolipids, but not N-glycans, on DLD-1 cells were responsible for EV71 infection. Purified SA-α2,3Gal and SA-α2,6Gal from human milk significantly inhibited EV71 infection of DLD-1 cells, indicating terminal SA-linked glycans could be receptors and inhibitors of EV71 infection. Conclusion This is the first in the literature to demonstrate that EV71 uses SA-linked glycans as receptors for infection, and natural SA-linked glycans from human milk can protect intestinal cells from EV71 infection. Further studies will test how a SA-containing glycan can prevent EV71 in the future. Article in Journal/Newspaper Avian flu Directory of Open Access Journals: DOAJ Articles Virology Journal 6 1 141 |
institution |
Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Infectious and parasitic diseases RC109-216 |
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Infectious and parasitic diseases RC109-216 Yang Kuender D Chuang Hau Yang Betsy Sialylated glycans as receptor and inhibitor of enterovirus 71 infection to DLD-1 intestinal cells |
topic_facet |
Infectious and parasitic diseases RC109-216 |
description |
Abstract Background Many viruses recognize specific sugar residues, particularly sulfated or sialylated glycans, as the infection receptors. A change of sialic acid (2-6)-linked galactose (SA-α2,6Gal) to SA-α2,3Gal determines the receptor for avian flu infection. The receptor for enterovirus 71 (EV71) infection that frequently causes fatal encephalitis in Asian children remains unclear. Currently, there is no effective vaccine or anti-virus agent for EV71 infection. Using DLD-1 intestinal cells, this study investigated whether SA-linked glycan on DLD-1 intestinal cells was a receptor for EV71, and whether natural SA-linked sugars from human milk could block EV71 infection. Results EV71 specifically infected DLD-1 intestinal cells but not K562 myeloid cells. Depletion of O-linked glycans or glycolipids, but not N-linked glycans, significantly decreased EV71 infection of DLD-1 cells. Pretreatment of DLD-1 cells with sialidase (10 mU, 2 hours) significantly reduced 20-fold EV71 replication (p < 0.01). Taken together, these results suggest that SA-linked O-glycans and glycolipids, but not N-glycans, on DLD-1 cells were responsible for EV71 infection. Purified SA-α2,3Gal and SA-α2,6Gal from human milk significantly inhibited EV71 infection of DLD-1 cells, indicating terminal SA-linked glycans could be receptors and inhibitors of EV71 infection. Conclusion This is the first in the literature to demonstrate that EV71 uses SA-linked glycans as receptors for infection, and natural SA-linked glycans from human milk can protect intestinal cells from EV71 infection. Further studies will test how a SA-containing glycan can prevent EV71 in the future. |
format |
Article in Journal/Newspaper |
author |
Yang Kuender D Chuang Hau Yang Betsy |
author_facet |
Yang Kuender D Chuang Hau Yang Betsy |
author_sort |
Yang Kuender D |
title |
Sialylated glycans as receptor and inhibitor of enterovirus 71 infection to DLD-1 intestinal cells |
title_short |
Sialylated glycans as receptor and inhibitor of enterovirus 71 infection to DLD-1 intestinal cells |
title_full |
Sialylated glycans as receptor and inhibitor of enterovirus 71 infection to DLD-1 intestinal cells |
title_fullStr |
Sialylated glycans as receptor and inhibitor of enterovirus 71 infection to DLD-1 intestinal cells |
title_full_unstemmed |
Sialylated glycans as receptor and inhibitor of enterovirus 71 infection to DLD-1 intestinal cells |
title_sort |
sialylated glycans as receptor and inhibitor of enterovirus 71 infection to dld-1 intestinal cells |
publisher |
BMC |
publishDate |
2009 |
url |
https://doi.org/10.1186/1743-422X-6-141 https://doaj.org/article/b2af449918694a3ea8007814fa0ff2d3 |
genre |
Avian flu |
genre_facet |
Avian flu |
op_source |
Virology Journal, Vol 6, Iss 1, p 141 (2009) |
op_relation |
http://www.virologyj.com/content/6/1/141 https://doaj.org/toc/1743-422X doi:10.1186/1743-422X-6-141 1743-422X https://doaj.org/article/b2af449918694a3ea8007814fa0ff2d3 |
op_doi |
https://doi.org/10.1186/1743-422X-6-141 |
container_title |
Virology Journal |
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6 |
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1 |
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141 |
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1766364894003724288 |