Infection of chicken embryonic fibroblasts by measles virus: adaptation at the virus entry level.
Measles virus (MV) has a tropism restricted to humans and primates and uses the human CD46 molecule as a cellular receptor. MV has been adapted to grow in chicken embryonic fibroblasts (CEF) and gave rise to an attenuated live vaccine. Hallé and Schwarz MV strains were compared in their ability to infect both simian Vero cells and CEF. Whereas both strains infected Vero cells, only the CEF-adapted Schwarz strain was able to efficiently infect CEF. Since the expression of the human MV receptor CD46 rendered the chicken embryonic cell line TCF more permissive to the infection by the Hallé MV strain, the MV entry into CEF appeared to be a limiting step in the absence of prior MV adaptation. CEF lacked reactivity with anti-CD46 antibodies but were found to express another protein allowing MV binding as an alternative receptor to CD46.
Escoffier
C
C
Immunité & Infections Virales, IVMC, CNRS-UCBL UMR 5537, 69372 Lyon Cedex 08, France.
Gerlier
D
D
D000222:Adaptation, Physiological; D000818:Animals; D015703:Antigens, CD / Q000032:analysis; D016466:CHO Cells; D002642:Chick Embryo; D002522:Chlorocebus aethiops; D006224:Cricetinae; D005347:Fibroblasts / Q000821:virology; D008459:Measles virus / Q000502:physiology*; D051916:Membrane Cofactor Protein; D008561:Membrane Fusion; D008562:Membrane Glycoproteins / Q000032:analysis; D011402:Pronase / Q000494:pharmacology; D014709:Vero Cells; D014779:Virus Replication
D015703:Antigens, CD; D051916:Membrane Cofactor Protein; D008562:Membrane Glycoproteins; D011402:Pronase