Summary
The net amount of collagen produced and deposited by fibroblasts in cell culture is determined by the rate of collagen synthesis as well as the rate of collagen degradation. Although collagen synthesis can be analyzed by several techniques, it is more difficult to measure collagen degradation. Breakdown of collagen depends upon the activity of a family of structurally and catalytically related mammalian enzymes termed matrix metalloproteinases (MMPs). Interstitial collagenase (MMP1) initiates the cleavage of fibrillar collagen, whereas gelatinases (MMP2 and MMP9) digest the denatured collagen fragments.
A method has been developed to quantitate the activity of collagenase (MMP1) and gelatinase (MMP9) in conditioned medium from fibroblast cell cultures. The assay, which uses the fluorogenic substrate Dnp-Pro-Cha-Gly-Cys(Me)-His-Ala-Lys(Nma)NH2, is technically simple and amenable to high throughput analysis. Addition of specific inhibitors of the metalloproteinases allows for simultaneous measurement of both collagenase and gelatinase activity.
Similar content being viewed by others
References
Aimes, R. T.; Quigley, J. P. Matrix metalloproteinase-2 is an interstitial collagenase. Inhibitor-free enzyme catalyzes the cleavage of collagen fibrils and soluble native type I collagen generating the specific 3/4- and 1/4-length fragments. J. Biol. Chem. 270:5872–5876; 1995.
Becherer, J. D.; Howe, A.; Patel, I.; Wisely, B.; LeVine, H.; McGeehan, G. M. Characterization of the collagen and TIMP binding domains in collagenase using truncated enzymes and a chimeric matrix metalloproteinase. J. Cell Biochem. Suppl. 15G:139; 1991.
Berman, J.; Green, M.; Sugg, E.; Anderegg, R.; Millington, D. S.; Norwood, D. L.; McGeehan, J.; Wiseman, J. Rapid optimization of enzyme substrates using defined substrate mixtures. J. Biol. Chem. 267:1434–1437; 1992.
Bickett, D. M.; Green, M. D.; Berman, J.; Dezube, M.; Howe, A.; Brown, P. J.; Roth, J. T.; McGeehan, G. M. A high throughput fluorogenic substrate for interstitial collagenase (MMP-1) and gelatinase (MMP-9). Anal. Biochem. 212:58–64; 1993.
Bradford, M. A rapid and sensitive method for the quantitation of microgram quantities of protein utilizing the principle of protein-dye binding. Anal. Biochem. 72:248–254; 1976.
Cawston, T. E.; Barrett, A. J. A rapid and reproducible assay for collagenase using I-14C acetylated collagen. Anal. Biochem. 99:340–345; 1979.
Dean, D. D.; Woessner, J. F. A sensitive, specific assay for tissue collagenase using telopeptide-free [3H]-acetylated collagen. Anal. Biochem. 148:174–181; 1985.
Frieje, J. M.; Diez-Itza, I.; Balbin, M.; Sanchez, L. M.; Blasco, R.; Tolivia, J.; Lopez-Otin, C. Molecular cloning and expression of collagenase-3, a novel human matrix metalloproteinase produced by breast carcinomas. J. Biol. Chem. 269:16766–16773; 1994.
Heussen, C.; Dowdle, E. B. Electrophoretic analysis of plasminogen activators in polyacrylamide gels containing sodium dodecyl sulfate and copolymerized substrates. Anal. Biochem. 102:196–202; 1980.
Jeffrey, J. J. Collagen degradation. In: Cohen, I. K.; Diegelman, R. F.; Lindblad, W. J., ed. Wound healing: biochemical and clinical aspects. Philadelphia: W. B. Saunders Co.; 1992:177–194.
Kleiner, D. E.; Stetler-Stevenson, W. G. Structural biochemistry and activation of matrix metalloproteinases. Curr. Opin. Cell Biol. 5:891–897; 1993.
Knight, C. G.; Willenbrock, F.; Murphy, G. A novel coumarin-labelled peptide for sensitive continuous assays of the matrix metalloproteinases. FEBS Lett. 296:263–266; 1992.
Nagai, Y.; Lapiere, C. M.; Gross, J. Tadpole collagenase. Preparation and purification. Biochemistry 5:3123–3130; 1966.
Stack, M. S.; Gray, R. D. Comparison of vertebrate collagenase and gelatinase using a new fluorogenic substrate peptide. J. Biol. Chem. 264:4277–4281; 1989.
Weingarten, H.; Martin, R.; Feder, J. Synthetic substrates of vertebrate collagenase. Biochemistry 24:6730–6734; 1985.
Yager, D. R.; Zhang, L. Y.; Liang, H. X.; Diegelmann, R. F.; Cohen, I. K. Wound fluids from human pressure ulcers contain elevated matrix metalloproteinase levels and activity compared to surgical wound fluids. J. Invest. Dermatol. 107:743–748; 1996.
Yaron, A.; Carmel, A.; Katchalski-Katzir, E. Intramolecularly quenched fluorogenic substrates for hydrolytic enzymes. Anal. Biochem. 95:228–235; 1979.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Gould, L.J., Yager, D.R., McGeehan, G.M. et al. Method to analyze collagenase and gelatinase activity by fibroblasts in culture. In Vitro Cell.Dev.Biol.-Animal 35, 75–79 (1999). https://doi.org/10.1007/s11626-999-0004-x
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/s11626-999-0004-x