Target
Mouse CD80
Synonyms
CD80 | Activation B7-1 antigen | B7-1 | B7.1 | BB1 | CD28LG | CD28LG1 | CD80 antigen | LAB7 | CD80 molecule | CTLA-4 counter-receptor B7.1
Reactivity
Mouse
(tested or 100% immunogen sequence identity)
Immunogen
BCL1 cells expressing CD80
Specificity
Recognizes mouse CD80 (B7-1), a 60kD cell surface glycoprotein which is a member of the CD28/B7 family. In mice, CD80 is expressed on monocytes, peritoneal macrophages and dendritic cells, and expression may be significantly increased upon B lymphocytes by LPS and by IL-4. CD80 has been identified as a ligand for CD28 and cytotoxic T-lymphocyte antigen-4 (CTLA-4), two structurally similar molecules expressed on T cells. CD28 and CTLA4 are two receptors that have essential but opposing functions in T-cell stimulation. The Interaction of CD80 with CD28 stimulates and sustains T cell responses, whereas the interaction of CD80 with CTLA4 is reported to inhibit T-cell responses.