Journal ArticleDOI
Antibody-mediated enhancement of Flavivirus replication in macrophage-like cell lines
Jsm Peiris,James S. Porterfield +1 more
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TLDR
The phenomenon of antibody-dependent enhancement of viral replication is not unique to dengue virus, and may have far wider relevance in other viral infections.Abstract:
Interactions between animal viruses and antiviral antisera may exceptionally result in an apparent increase in viral infectivity1–3. Halstead and coworkers4–6 demonstrated enhanced replication of dengue virus (a Flavivirus, family Togaviridae) in human or simian peripheral blood leucocytes carrying Fc receptors at subneutralising concentrations of anti-dengue antibody. We have used three continuous cell lines7–9 which express macrophage markers to explore the mechanism of this phenomenon. Dengue virus failed to replicate in these cells, but West Nile virus, another Flavivirus, replicated in all three, and we were able to demonstrate reproducibly 50–100-fold enhancement of virus yields in the presence of Flavivirus antisera, the effect also being directly demonstrable in P388D1 cells by increased numbers of virus-induced plaques. The phenomenon of antibody-dependent enhancement of viral replication is not unique to dengue virus, and may have far wider relevance in other viral infections.read more
Citations
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Flaviviridae :T he Viruses and Their Replication
TL;DR: The present research attacked the Flavivirus infection through two mechanisms: Membrane Reorganization and the Compartmentalization and Assembly and Release of Particles from Flaviv virus-infected Cells and Host Resistance to Flaviviral Infection.
Journal ArticleDOI
Pathogenesis of dengue: challenges to molecular biology
TL;DR: This work has identified a severe syndrome, dengue hemorrhagic fever/dengue shock syndrome, in Southeast Asian children, which recently has also been identified in children infected with the virus in Puerto Rico.
Journal ArticleDOI
Pathogenesis of human immunodeficiency virus infection.
TL;DR: The observations indicate the major challenge of preventing infection by HIV appears to involve infection with a relatively low-virulence strain that remains sensitive to the immune response, particularly to control by CD8+ cell antiviral activity.
Book ChapterDOI
Molecular biology of flaviviruses.
TL;DR: An overview of the molecular biology of the flaviviruses is presented, which are enveloped positive-strand RNA viruses capable of causing a number of important human diseases.
Book ChapterDOI
Virus entry into animal cells.
Mark Marsh,Ari Helenius +1 more
TL;DR: In order to take up nutrients, to communicate with other cells, to control the intracellular ion balance, and to secrete substances, cells have a variety of mechanisms for bypassing and modifying the barrier properties imposed by their plasma membrane.
References
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Journal ArticleDOI
Establishment and characterization of a human histiocytic lymphoma cell line (U‐937)
TL;DR: The histiocytic origin of the cell line was shown by its capacity for lysozyme production and the strong esterase activity of the cells, and it was concluded that the U‐937 is a neoplastic, histuocytic cell line.
Journal ArticleDOI
Dengue viruses and mononuclear phagocytes. I. Infection enhancement by non-neutralizing antibody.
Scott B. Halstead,EJ O'Rourke +1 more
TL;DR: In vitro antibody-dependent infection of PBL provides a possible model for study of pathogenetic mechanisms in infants with dengue shock syndrome who passively acquire maternal anti-dengue IgG.
Journal ArticleDOI
Antibody-enhanced dengue virus infection in primate leukocytes
Scott B. Halstead,EJ O'Rourke +1 more
TL;DR: This system provides a provisional model for DSS in young infants during primary dengue infections in humans possessing pre-infection antibody, and in vitro enhancement of d Dengue infection in PBL by antibody.
Journal Article
Reticulum cell sarcoma: an effector cell in antibody-dependent cell-mediated immunity.
TL;DR: A transplantable, murine reticulum cell sarcoma is described which exhibits the cytologic, adherence, and phagocytic properties of macrophages and mediate antibody-dependent cellular immunity as assayed by release of radioactivity from 51Cr-labeled erythrocytes.
Journal Article
Identification of macrophage-like characteristics in a cultured murine tumor line.
TL;DR: The accessibility of well characterized and pure macrophage-like cell lines, such as P388D1, will facilitate studies where cell purity is essential.
Related Papers (5)
Dengue viruses and mononuclear phagocytes. I. Infection enhancement by non-neutralizing antibody.
Scott B. Halstead,EJ O'Rourke +1 more