| Scientific background: |
ITGAM (Integrin Alpha-M), also called CD11B or Mo1 ALPHA SUBUNIT (MO1A), is one protein subunit that forms the heterodimeric integrin alpha-M beta-2 (alphaMbeta2) molecule. A major surface antigen family on human leukocytes includes complement receptor type 3 (CR3A; also called ITGAM, Mac1, or Mo1), lymphocyte function-associated (LFA) antigen type 1 (ITGAL), and p150, 95 (ITGAX). By in situ hybridization, Corbi et al. (1988) demonstrated that the genes encoding the alpha subunits of LFA1 (ITGAL), Mac1, and p150, 95 (ITGAX), all of which are involved in leukocyte adhesion, constitute a cluster on 16p13.1-p11. Callen et al. (1991) narrowed the assignment to 16p11.2. Inflammation plays an essential role in the initiation and progression of atherosclerosis. Simon et al. (2000) presented evidence that it also has a role in vascular repair after mechanical arterial injury (i.e., percutaneous transluminal coronary angioplasty, or PTCA). |
| References: |
1. Callen, D. F., Chen, L. Z., Nancarrow, J., Whitmore, S. A., Apostolou, S., Thompson, A. D., Lane, S. A., Stallings, R. L., Hildebrand, C. E., Harris, P. G., Sutherland, G. R. Current state of the physical map of human chromosome 16. (Abstract) Cytogenet. Cell Genet. 58: 1998 only, 1991.
2. Corbi, A. L., Larson, R. S., Kishimoto, T. K., Springer, T. A., Morton, C. C. Chromosomal location of the genes encoding the leukocyte adhesion receptors LFA-1, Mac-1 and p150,95: identification of a gene cluster involved in cell adhesion. J. Exp. Med. 167: 1597-1607, 1988.
3. Simon, D. I., Chen, Z., Seifert, P., Edelman, E. R., Ballantyne, C. M., Rogers, C. Decreased neointimal formation in Mac-1 -/- mice reveals a role for inflammation in vascular repair after angioplasty. J. Clin. Invest. 105: 293-300, 2000.
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