Volume 26, Issue 8 pp. 984-993
Article
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Characterization of latent and active forms of cartilage proteinases produced by normal immature rabbit articular cartilage in tissue culture

Elizabeth C. Cartwright PhD

Elizabeth C. Cartwright PhD

Research Fellow

Department of Biochemistry, Monash University, Clayton, 3168, Victoria, Australia.

Elizabeth C. Cartwright was a Queen Elizabeth II Research Fellow.

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Ian K. Campbell BSc (Hons)

Ian K. Campbell BSc (Hons)

Department of Biochemistry, Monash University, Clayton, 3168, Victoria, Australia.

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Margaret L. Britz PhD

Margaret L. Britz PhD

Department of Microbiology, University of Melbourne, Parkville, Victoria, Melbourne, Australia

Department of Biochemistry, Monash University, Clayton, 3168, Victoria, Australia.

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John D. Sandy PhD

John D. Sandy PhD

Terence and Mathilda Kennedy Institute of Rheumatology, 6 Bute Gardens, Hammersmith, London, UK

Department of Biochemistry, Monash University, Clayton, 3168, Victoria, Australia.

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Dennis A. Lowther PhD

Corresponding Author

Dennis A. Lowther PhD

Professor of Biochemistry

Department of Biochemistry, Monash University, Clayton, 3168, Victoria, Australia.

Monash University, Clayton, Victoria, 3168, AustraliaSearch for more papers by this author
First published: August 1983
Citations: 13

Abstract

Cultured tissue slices from normal immature rabbit articular cartilage released latent neutral metal-loproteinases into serum-free medium. On activation with 4-aminophenylmercuric acetate, these metalloproteinases could degrade collagen, proteoglycan, and gelatin. Also produced were an acid proteinase with the properties of cathepsin D and an inhibitor of the neutral metalloproteinases. The appearance of both the proteinases and the inhibitor in the culture medium could be prevented by incubation of cultures with cycloheximide. The active and latent forms of the proteinases were characterized using Ultrogel AcA 54 chromatography.

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