title: Measles virus transmission from dendritic cells to T cells: formation of synapse-like interfaces concentrating viral and cellular components.
abstract: Transmission of measles virus (MV) to T cells by its early CD150(+) target cells is considered to be crucial for viral dissemination within the hematopoietic compartment. Using cocultures involving monocyte-derived dendritic cells (DCs) and T cells, we now show that T cells acquire MV most efficiently from cis-infected DCs rather than DCs having trapped MV (trans-infection). Transmission involves interactions of the viral glycoprotein H with its receptor CD150 and is therefore more efficient to preactivated T cells. In addition to rare association with actin-rich filopodial structures, the formation of contact interfaces consistent with that of virological synapses (VS) was observed where viral proteins accumulated and CD150 was redistributed in an actin-dependent manner. In addition to these molecules, activated LFA-1, DC-SIGN, CD81, and phosphorylated ezrin-radixin-moesin proteins, which also mark the HIV VS, redistributed toward the MV VS. Most interestingly, moesin and substance P receptor, both implicated earlier in assisting MV entry or cell-to-cell transmission, also partitioned to the transmission structure. Altogether, the MV VS shares important similarities to the HIV VS in concentrating cellular components potentially regulating actin dynamics, conjugate stability, and membrane fusion as required for efficient entry of MV into target T cells.
authors: Institute for Virology and Immunobiology, University of Wuerzburg, Wuerzburg, Germany.
authors: Susanne
authors: S
authors: Koethe
authors: Elita
authors: E
authors: Avota
authors: Sibylle
authors: S
authors: Schneider-Schaulies
mesh_terms: D015703:Antigens, CD / Q000378:metabolism; D015815:Cell Adhesion Molecules / Q000378:metabolism; D003713:Dendritic Cells / Q000276:immunology / Q000821:virology*; D054884:Host-Pathogen Interactions / Q000276:immunology; D006801:Humans; D054992:Immunological Synapses / Q000821:virology*; D066298:In Vitro Techniques; D037181:Lectins, C-Type / Q000378:metabolism; D008457:Measles / Q000276:immunology / Q000635:transmission / Q000821:virology; D008459:Measles virus / Q000276:immunology / Q000472:pathogenicity* / Q000502:physiology*; D011956:Receptors, Cell Surface / Q000378:metabolism; D011991:Receptors, Virus / Q000378:metabolism; D000071177:Signaling Lymphocytic Activation Molecule Family Member 1; D013601:T-Lymphocytes / Q000276:immunology / Q000821:virology*; D014764:Viral Proteins / Q000276:immunology; D000099215:DC-Specific ICAM-3 Grabbing Nonintegrin
chemical_list: D015703:Antigens, CD; D015815:Cell Adhesion Molecules; D037181:Lectins, C-Type; D011956:Receptors, Cell Surface; D011991:Receptors, Virus; D000071177:Signaling Lymphocytic Activation Molecule Family Member 1; D014764:Viral Proteins; D000099215:DC-Specific ICAM-3 Grabbing Nonintegrin; C000604059:SLAMF1 protein, human