Chemicals and Drugs

B7-1 Antigen

A costimulatory ligand membrane glycoprotein that contains a V2 type and C2 IMMUNOGLOBULIN DOMAIN and is expressed by ANTIGEN-PRESENTING CELLS. It binds to CTLA-4 ANTIGEN with high specificity and to CD28 ANTIGEN with low specificity. The interaction of CD80 with CD28 ANTIGEN provides a costimulatory signal to T-LYMPHOCYTES, while its interaction with CTLA-4 ANTIGEN may play a role in inducing PERIPHERAL TOLERANCE.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

A costimulatory ligand membrane glycoprotein that contains a V2 type and C2 IMMUNOGLOBULIN DOMAIN and is expressed by ANTIGEN-PRESENTING CELLS. It binds to CTLA-4 ANTIGEN with high specificity and to CD28 ANTIGEN with low specificity. The interaction of CD80 with CD28 ANTIGEN provides a costimulatory signal to T-LYMPHOCYTES, while its interaction with CTLA-4 ANTIGEN may play a role in inducing PERIPHERAL TOLERANCE.

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Synonyms

14 entry terms
  • Antigen, B7-1
  • Antigens, CD80
  • B-Cell Activation Antigen
  • B7-1 Costimulatory Molecule
  • B7-1 Ligand
  • CD80 Antigen
  • CD80 Antigens
  • Antigen, B7 1
  • B Cell Activation Antigen
  • B7 1 Antigen
  • B7 1 Costimulatory Molecule
  • B7 1 Ligand
  • Costimulatory Molecule, B7-1
  • Ligand, B7-1

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Aspects Covered

30 allowable subheadings

Indexed with the subheadings administration & dosage, adverse effects, agonists, analysis, antagonists & inhibitors, biosynthesis, blood, cerebrospinal fluid, chemical synthesis, chemistry, classification, deficiency, drug effects, economics, genetics, history, immunology, isolation & purification, metabolism, pharmacokinetics, pharmacology, physiology, poisoning, radiation effects, standards, supply & distribution, therapeutic use, toxicity, ultrastructure, urine.

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History Note

2018 (1991)

MeSH Record

Previous Indexing

  • Antigens, Surface (1991-1993)

MeSH Hierarchy

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AMA Style

References

  1. National Library of Medicine. B7-1 Antigen. Medical Subject Headings (MeSH). 2026. Unique ID D018122. http://id.nlm.nih.gov/mesh/2026/D018122
  2. B7-1 Antigen. In: Wikipedia. https://en.wikipedia.org/wiki/CD80
  3. B7-1 Antigen. In: Wikidata. https://www.wikidata.org/wiki/Q5009843