General description
Matrix metalloproteinases (MMP′s) are a family of enzymes that are responsible for the degradation of extracellular matrix components such as collagen, laminin and proteoglycans. In addition to sequence homology, all MMP′s share the following characteristics: the catalytic mechanism is dependent upon a zinc ion at the active center, they cleave one or more extracellular matrix components, they are secreted as zymogens which are activated by removal of an ~10 kDa segment from the N terminus and they are inhibited by tissue inhibitor of metalloproteinases (TIMP). These enzymes are involved in normal physiological processes such as embryogenesis and tissue remodeling and may play an important role in arthritis, periodontitis, and metastasis.MMP-9 (Gelatinase B, 92 kDa gelatinase/type IV collagenase) is secreted as a 92 kDa zymogen which is proteolytically processed to the 83 kDa active form; a 68 kDa has also been detected. MMP-9, along with its most closely related member of the MMP family, MMP-2, show substrate specificity toward type IV and V collagens, gelatin and elastin. Numerous studies have shown a correlation between collagenase expression and metastatic potential. Elevated levels of MMP-9 in plasma suggest that it may be a useful marker for the diagnosis or prognosis of cancer in general.
Purified mouse monoclonal antibody. Recognizes the ~92 kDa latent and the ~83 kDa active forms of human MMP-9 under non-reducing conditions, but only the latent form under reducing conditions.
Recognizes the ~92 kDa latent and the ~83 kDa active forms of MMP-9 under non-reducing conditions, but only the latent form under reducing conditions. Inhibits the enzymatic activity of MMP-9. For paraffin sections, use Cat. No. IM37L.
This Anti-MMP-9 (Ab-1) Mouse mAb (6-6B) is validated for use in Immunoblotting, Immunoprecipitation, Neutralization Studies, Paraffin Sections for the detection of MMP-9 (Ab-1).
Immunogen
Human
MMP-9 from conditioned medium of PMA-stimulated HT-1080 human fibrosarcoma cells
Application
Immunoblotting (2 µg/ml)
Immunoprecipitation (see appplication references)
Neutralization Studies (see comments and application references)
Paraffin Sections (not recommended)
Physical form
Lyophilized from a volatile buffer, 100 µg BSA.
Preparation Note
Store at 4°C until reconstituted, then store in aliquots at -20°C or at 4°C with 0.1% azide. Resuspend the antibody with sterile PBS, pH 7.4, or sterile 20 mM Tris-saline, pH 7.4, to yield a final concentration of 100 µg/ml; product will be more stable if 0.1% sodium azide is included (do not add azide if antibody is to be used with viable cells). Lyophilized antibodies should be resuspended at 4°C with occasional gentle mixing for at least 2 h. Freezing of aliquots is best for long-term storage of reconstituted product; repetitive freezing and thawing should be avoided.
Analysis Note
Positive Control
MMP-9 protein (Cat. Nos. PF024 or PF038)
Other Notes
Cottam, D.W. and Rees, R.C. 1993. Intl. J. of Oncol.2, 861.
Nakajima, M., et al. 1993. Cancer Res.53, 5802.
Ramos-DeSimone, et al. 1993. Hybridoma. 12, 349.
Stetler-Stevenson, W.G., et al. 1993. FASEB.7, 1434.
Zucker, S., et al. 1993. Cancer Res.53, 140.
Woessner, J.F. 1991. FASEB. 5, 2145.
Liotta, L.A. and Stetler-Stevenson, W.G. 1990. in Seminars in Cancer Biology, ed. M.M. Gottesman. Vol. 1; 99-106.
Inhibits MMP-9 enzymatic activity. For staining paraffin sections, use Anti-MMP-9 (626-644) (Ab-3) Mouse mAb (56-2A4) (Cat. No. IM37L). Antibody should be titrated for optimal results in individual systems.
Legal Information
Not available for sale in Japan.
CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany
Disclaimer
Toxicity: Standard Handling (A)
