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- W2607268706 endingPage "e1006352" @default.
- W2607268706 startingPage "e1006352" @default.
- W2607268706 abstract "Herpes simplex virus (HSV) entry into the cells requires glycoproteins gD, gH/gL and gB, activated in a cascade fashion by conformational modifications induced by cognate receptors and intermolecular signaling. The receptors are nectin1 and HVEM (Herpes virus entry mediator) for gD, and αvβ6 or αvβ8 integrin for gH. In earlier work, insertion of a single chain antibody (scFv) to the cancer receptor HER2 (human epidermal growth factor receptor 2) in gD, or in gH, resulted in HSVs specifically retargeted to the HER2-positive cancer cells, hence in highly specific non-attenuated oncolytic agents. Here, the scFv to HER2 was inserted in gB (gBHER2). The insertion re-targeted the virus tropism to the HER2-positive cancer cells. This was unexpected since gB is known to be a fusogenic glycoprotein, not a tropism determinant. The gB-retargeted recombinant offered the possibility to investigate how HER2 mediated entry. In contrast to wt-gB, the activation of the chimeric gBHER2 did not require the activation of the gD and of gH/gL by their respective receptors. Furthermore, a soluble form of HER2 could replace the membrane-bound HER2 in mediating virus entry, hinting that HER2 acted by inducing conformational changes to the chimeric gB. This study shows that (i) gB can be modified and become the major determinant of HSV tropism; (ii) the chimeric gBHER2 bypasses the requirement for receptor-mediated activation of other essential entry glycoproteins." @default.
- W2607268706 created "2017-04-28" @default.
- W2607268706 creator A5007133049 @default.
- W2607268706 creator A5039080437 @default.
- W2607268706 creator A5079327601 @default.
- W2607268706 creator A5080166418 @default.
- W2607268706 date "2017-04-19" @default.
- W2607268706 modified "2023-10-15" @default.
- W2607268706 title "Insertion of a ligand to HER2 in gB retargets HSV tropism and obviates the need for activation of the other entry glycoproteins" @default.
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- W2607268706 doi "https://doi.org/10.1371/journal.ppat.1006352" @default.
- W2607268706 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/5411103" @default.
- W2607268706 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/28423057" @default.
- W2607268706 hasPublicationYear "2017" @default.
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