Members of adenovirus species B utilize CD80 and CD86 as cellular attachment receptors

Virus Res. 2006 Dec;122(1-2):144-53. doi: 10.1016/j.virusres.2006.07.009. Epub 2006 Aug 22.


Alternate serotypes of adenovirus (Ad), including Ads of species B, are being explored to circumvent the disadvantages of Ad serotype 5 gene delivery vectors. Whereas the majority of human Ads utilize the Coxsackievirus and adenovirus receptor (CAR), none of the Ad species B use CAR. Ad species B is further divided into two subspecies, B1 and B2, and utilizes at least two classes of receptors: common Ad species B receptors and B2 specific receptors. CD46 has been implicated as a B2-specific receptor. Ad serotype 3 (Ad3), a member of B1, utilizes CD80 and CD86 as cellular attachment receptors. The receptor-interacting Ad fiber-knob domain is highly homologous among species B Ads. We hypothesized that other members of Ad species B may utilize CD80 and CD86 as cellular attachment receptors. All tested species B members showed specific binding to cells expressing CD80 and CD86, and the Ad fiber-knob domain from both B1 and B2 Ad efficiently blocked CD80- and CD86-mediated infection of Ad3 vectors. Members of both B1 and B2 demonstrated CD80- and CD86-specific infection of CHO cells expressing CD80 and CD86. Therefore, all of the members of Ad species B utilize CD80 and CD86 for infection of cells.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adenoviridae / physiology*
  • Animals
  • B7-1 Antigen / physiology*
  • B7-2 Antigen / physiology*
  • CHO Cells
  • Cricetinae
  • Cricetulus
  • Receptors, Virus / physiology*
  • Virus Attachment*


  • B7-1 Antigen
  • B7-2 Antigen
  • Receptors, Virus