Viral resistance of MOGS-CDG patients implies a broad-spectrum strategy against acute virus infections
ANTIVIRAL THERAPY
Authors: Chang, Jinhong; Block, Timothy M.; Guo, Ju-Tao
Abstract
Sadat et al. reported in the 24 April 2014 issue of the New England Journal of Medicine that patients genetically deficient in the gene encoding mannosyl-oligosaccharide glucosidase (MOGS), also known as endoplasmic reticulum (ER) glucosidase I, manifested a severe hypogammaglobulinaemia without clinical evidence of an infectious diathesis. This paradox phenomenon is, at least in part, because the impaired N-linked glycan processing of the patients compromises their ability to support efficient replication and cellular entry of viruses. This finding unambiguously validates ER glucosidases as valuable targets for antiviral agents against a broad-spectrum of enveloped viruses.
Dengue tropism for macrophages and dendritic cells: the host cell effect
JOURNAL OF GENERAL VIROLOGY
Authors: Flipse, Jacky; Torres, Silvia; Diosa-Toro, Mayra; van der Ende-Metselaar, Heidi; Herrera-Rodriguez, Jose; Urcuqui-Inchima, Silvio; Huckriede, Anke; Rodenhuis-Zybert, Izabela A.; Smit, Jolanda M.
Abstract
Dengue virus infects immune cells, including monocytes, macrophages and dendritic cells (DC). We compared virus infectivity in macrophages and DC, and found that the virus origin determined the cell tropism of progeny virus. The highest efficiency of re-infection was seen for macrophage-derived dengue virus. Furthermore, in the presence of enhancing antibodies, macrophage-derived virus gave greater enhancement of infection compared with immature DC derived virus. Taken together, our results highlight the importance of macrophages in dengue infection.