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Regulation of intercellular adhesion molecule-1 (CD54) gene expression
1Department of Immunology/Microbiology, Rush-Presbyterian-St. Luke's Medical Center, Chicago, Illinois 60612, USA. kroebuck@rush.edu
Journal of Leukocyte Biology
|December 30, 1999
Summary
Intercellular adhesion molecule-1 (ICAM-1) is crucial for immune cell interactions and inflammation. This review details how ICAM-1 gene transcription is regulated by various factors and transcription factors like NF-kappaB.
Area of Science:
- Immunology
- Molecular Biology
- Cell Biology
Background:
- Intercellular adhesion molecule-1 (ICAM-1, CD54) is an immunoglobulin superfamily glycoprotein.
- ICAM-1 mediates leukocyte interactions, crucial for transendothelial migration and T cell activation.
- ICAM-1 expression is upregulated by inflammatory mediators, primarily via gene transcription.
Purpose of the Study:
- To review the current understanding of ICAM-1 gene regulation.
- To emphasize the transcription factors and signaling pathways involved in ICAM-1 gene activation.
- To highlight cell type- and stimulus-specific regulation of ICAM-1.
Main Methods:
- Review of existing literature on ICAM-1 gene regulation.
- Analysis of ICAM-1 promoter architecture and transcription factor binding sites.
- Examination of signaling pathways leading to ICAM-1 gene transcription.
Main Results:
- ICAM-1 promoter is complex, featuring numerous inducible transcription factor binding sites.
- Nuclear factor-kappa B (NF-kappaB) is a key transcription factor for ICAM-1 induction.
- Transcription factors and co-activators assemble on the promoter to mediate cell- and stimulus-specific ICAM-1 expression.
Conclusions:
- ICAM-1 gene regulation is intricate, involving multiple transcription factors and signaling pathways.
- Understanding these regulatory mechanisms is vital for comprehending inflammatory responses.
- The cell type- and stimulus-specific nature of ICAM-1 transcription is mediated by distinct transcription complexes.